diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..e3b906d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,10 @@
+zabov
+killfile
+killfile/*
+db/zabov.db
+binaries
+binaries/*
+build.sh
+.vscode
+.vscode/*
+
diff --git a/00.database.go b/00.database.go
new file mode 100644
index 0000000..3f5e82a
--- /dev/null
+++ b/00.database.go
@@ -0,0 +1,38 @@
+package main
+
+import (
+ "fmt"
+ "os"
+
+ "github.com/syndtr/goleveldb/leveldb"
+)
+
+//MyZabovKDB is the storage where we'll put domains to block
+var MyZabovKDB *leveldb.DB
+
+//MyZabovCDB is the storage where we'll put domains to cache
+var MyZabovCDB *leveldb.DB
+
+func init() {
+
+ var err error
+
+ os.RemoveAll("./db")
+
+ os.MkdirAll("./db", 0755)
+
+ MyZabovKDB, err = leveldb.OpenFile("./db/killfile", nil)
+ if err != nil {
+ fmt.Println("Cannot create Killfile db: ", err.Error())
+ } else {
+ fmt.Println("Killfile DB created")
+ }
+
+ MyZabovCDB, err = leveldb.OpenFile("./db/cache", nil)
+ if err != nil {
+ fmt.Println("Cannot create Cache db: ", err.Error())
+ } else {
+ fmt.Println("Cache DB created")
+ }
+
+}
diff --git a/00.memory.go b/00.memory.go
new file mode 100644
index 0000000..762ac9f
--- /dev/null
+++ b/00.memory.go
@@ -0,0 +1,26 @@
+package main
+
+import (
+ "fmt"
+ "runtime"
+ "time"
+)
+
+func init() {
+
+ fmt.Println("Garbage Collector Thread Starting")
+
+ go memoryCleanerThread()
+
+}
+
+func memoryCleanerThread() {
+
+ for {
+ time.Sleep(10 * time.Minute)
+ fmt.Println("Time to clean memory...")
+ runtime.GC()
+ fmt.Println("Garbage Collection done.")
+ }
+
+}
diff --git a/01.conf.go b/01.conf.go
new file mode 100644
index 0000000..45d1cf8
--- /dev/null
+++ b/01.conf.go
@@ -0,0 +1,69 @@
+package main
+
+import (
+ "encoding/json"
+ "fmt"
+ "io/ioutil"
+ "log"
+ "os"
+
+ "github.com/miekg/dns"
+)
+
+func init() {
+
+ //ZabovConf describes the Json we use for configuration
+ type ZabovConf struct {
+ Zabov struct {
+ Port string `json:"port"`
+ Proto string `json:"proto"`
+ Ipaddr string `json:"ipaddr"`
+ Upstream string `json:"upstream"`
+ Cachettl int `json:"cachettl"`
+ Killfilettl int `json:"killfilettl"`
+ Singlefilters string `json:"singlefilters"`
+ Doublefilters string `json:"doublefilters"`
+ Blackholeip string `json:"blackholeip"`
+ Hostsfile string `json:"hostsfile"`
+ } `json:"zabov"`
+ }
+
+ var MyConf ZabovConf
+
+ file, err := ioutil.ReadFile("config.json")
+
+ if err != nil {
+ log.Println("Cannot open config file", err.Error())
+ os.Exit(1)
+ }
+
+ err = json.Unmarshal([]byte(file), &MyConf)
+
+ if err != nil {
+ log.Println("Cannot marshal json: ", err.Error())
+ os.Exit(1)
+ }
+
+ // now we read configuration file
+ fmt.Println("Reading configuration file...")
+
+ ZabovPort := MyConf.Zabov.Port
+ ZabovType := MyConf.Zabov.Proto
+ ZabovAddr := MyConf.Zabov.Ipaddr
+ ZabovUpDNS = MyConf.Zabov.Upstream
+ ZabovSingleBL = MyConf.Zabov.Singlefilters
+ ZabovDoubleBL = MyConf.Zabov.Doublefilters
+ ZabovAddBL = MyConf.Zabov.Blackholeip
+ ZabovCacheTTL = MyConf.Zabov.Cachettl
+ ZabovKillTTL = MyConf.Zabov.Killfilettl
+ ZabovHostsFile = MyConf.Zabov.Hostsfile
+
+ zabovString := ZabovAddr + ":" + ZabovPort
+
+ MyDNS = new(dns.Server)
+ MyDNS.Addr = zabovString
+ MyDNS.Net = ZabovType
+
+ ZabovDNSArray = fileByLines(ZabovUpDNS)
+
+}
diff --git a/01.dnscheck.go b/01.dnscheck.go
new file mode 100644
index 0000000..b8579ad
--- /dev/null
+++ b/01.dnscheck.go
@@ -0,0 +1,37 @@
+package main
+
+import (
+ "fmt"
+ "net/http"
+ "time"
+)
+
+//NetworkUp tells the system if the network is up or not
+var NetworkUp bool
+
+func checkNetworkUp() bool {
+ // RFC2606 test domain, should always work, unless internet is down.
+ _, err := http.Get("http://example.com")
+ if err != nil {
+ return false
+ }
+ return true
+}
+
+func checkNetworkUpThread() {
+
+ ticker := time.NewTicker(2 * time.Minute)
+
+ for range ticker.C {
+ NetworkUp = checkNetworkUp()
+ }
+
+}
+
+func init() {
+
+ fmt.Println("Network Checker starting....")
+
+ go checkNetworkUpThread()
+
+}
diff --git a/01.killfile.go b/01.killfile.go
new file mode 100644
index 0000000..b5d914b
--- /dev/null
+++ b/01.killfile.go
@@ -0,0 +1,79 @@
+package main
+
+import (
+ "fmt"
+ "strings"
+)
+
+var zabovKbucket = []byte("killfile")
+
+type killfileItem struct {
+ Kdomain string
+ Ksource string
+}
+
+var bChannel chan killfileItem
+
+func init() {
+
+ bChannel = make(chan killfileItem, 1024)
+ fmt.Println("Initializing kill channel engine.")
+
+ go bWriteThread()
+
+}
+
+func bWriteThread() {
+
+ for item := range bChannel {
+
+ writeInKillfile(item.Kdomain, item.Ksource)
+ incrementStats("BL domains from "+item.Ksource, 1)
+ incrementStats("TOTAL", 1)
+
+ }
+
+}
+
+//DomainKill stores a domain name inside the killfile
+func DomainKill(s, durl string) {
+
+ if len(s) > 2 {
+
+ s = strings.ToLower(s)
+
+ var k killfileItem
+
+ k.Kdomain = s
+ k.Ksource = durl
+
+ bChannel <- k
+
+ }
+
+}
+
+func writeInKillfile(key, value string) {
+
+ stK := []byte(key)
+ stV := []byte(value)
+
+ err := MyZabovKDB.Put(stK, stV, nil)
+ if err != nil {
+ fmt.Println("Cannot write to Killfile DB: ", err.Error())
+ }
+
+}
+
+func domainInKillfile(domain string) bool {
+
+ s := strings.ToLower(domain)
+
+ has, err := MyZabovKDB.Has([]byte(s), nil)
+ if err != nil {
+ fmt.Println("Cannot read from Killfile DB: ", err.Error())
+ }
+
+ return has
+
+}
diff --git a/01.stats.go b/01.stats.go
new file mode 100644
index 0000000..61e2584
--- /dev/null
+++ b/01.stats.go
@@ -0,0 +1,100 @@
+package main
+
+import (
+ "bytes"
+ "encoding/json"
+ "fmt"
+ "time"
+)
+
+type send struct {
+ Payload string
+ Number int64
+ Operation string
+}
+
+//ZabovStats is used to keep statistics to print
+var ZabovStats map[string]int64
+
+var stats chan send
+
+func init() {
+
+ stats = make(chan send, 1024)
+
+ ZabovStats = make(map[string]int64)
+
+ fmt.Println("Initializing stats engine.")
+ go reportPrintThread()
+ go statsThread()
+}
+
+func statsPrint() {
+ fmt.Println()
+ stat, _ := json.Marshal(ZabovStats)
+ fmt.Println(jsonPrettyPrint(string(stat)))
+ fmt.Println()
+}
+
+func incrementStats(key string, value int64) {
+
+ var s send
+
+ s.Payload = key
+ s.Number = value
+ s.Operation = "INC"
+
+ stats <- s
+
+}
+
+func setstatsvalue(key string, value int64) {
+
+ var s send
+
+ s.Payload = key
+ s.Number = value
+ s.Operation = "SET"
+
+ stats <- s
+
+}
+
+func reportPrintThread() {
+ for {
+ var s send
+ s.Operation = "PRI"
+ s.Payload = "-"
+ s.Number = 0
+ stats <- s
+ time.Sleep(2 * time.Minute)
+ }
+}
+
+func statsThread() {
+
+ fmt.Println("Starting Statistical Collection Thread")
+
+ for item := range stats {
+
+ switch item.Operation {
+ case "INC":
+ ZabovStats[item.Payload] += item.Number
+ case "SET":
+ ZabovStats[item.Payload] = item.Number
+ case "PRI":
+ statsPrint()
+ }
+
+ }
+
+}
+
+func jsonPrettyPrint(in string) string {
+ var out bytes.Buffer
+ err := json.Indent(&out, []byte(in), "", "\t")
+ if err != nil {
+ return in
+ }
+ return out.String()
+}
diff --git a/02.cache.go b/02.cache.go
new file mode 100644
index 0000000..7c4e1b5
--- /dev/null
+++ b/02.cache.go
@@ -0,0 +1,104 @@
+package main
+
+import (
+ "bytes"
+ "encoding/gob"
+ "fmt"
+ "time"
+
+ "github.com/miekg/dns"
+)
+
+
+
+type cacheItem struct {
+ Query []byte
+ Date time.Time
+}
+
+//DomainCache stores a domain name inside the cache
+func DomainCache(s string, resp *dns.Msg) {
+
+ var domain2cache cacheItem
+ var err error
+ var dom2 bytes.Buffer
+ enc := gob.NewEncoder(&dom2)
+
+ domain2cache.Query, err = resp.Pack()
+ if err != nil {
+ fmt.Println("Problems packing the response: ", err.Error())
+ }
+ domain2cache.Date = time.Now()
+
+ err = enc.Encode(domain2cache)
+
+ if err != nil {
+ fmt.Println("Cannot GOB the domain to cache: ", err.Error())
+ }
+
+ cacheDomain(s, dom2.Bytes())
+
+}
+
+func cacheDomain(key string, domain []byte) {
+
+ err := MyZabovCDB.Put([]byte(key), domain, nil)
+ if err != nil {
+ fmt.Println("Cannot write to Cache DB: ", err.Error())
+ }
+
+}
+
+//GetDomainFromCache stores a domain name inside the cache
+func GetDomainFromCache(s string) *dns.Msg {
+
+ ret := new(dns.Msg)
+ var cache bytes.Buffer
+ dec := gob.NewDecoder(&cache)
+ var record cacheItem
+ var conf []byte
+ var errDB error
+
+ if domainInCache(s) == false {
+ return nil
+ }
+
+ conf, errDB = MyZabovCDB.Get([]byte(s), nil)
+ if errDB != nil {
+ fmt.Println("Cant READ DB :" , errDB.Error() )
+ return nil
+ }
+
+ cache.Write(conf)
+
+ err := dec.Decode(&record)
+ if err != nil {
+ fmt.Println("Decode error :", err.Error())
+ return nil
+ }
+
+ if time.Since(record.Date) > (time.Duration(ZabovCacheTTL) * time.Hour) {
+ return nil
+ }
+
+ err = ret.Unpack(record.Query)
+ if err != nil {
+ fmt.Println("Problem unpacking response: ", err.Error())
+ return nil
+ }
+
+ return ret
+
+}
+
+func domainInCache(domain string) bool {
+
+ has, err := MyZabovCDB.Has([]byte(domain), nil)
+ if err != nil {
+ fmt.Println("Cannot search Cache DB: ", err.Error())
+ return false
+ }
+
+ return has
+
+}
diff --git a/Dockerfile.amd64 b/Dockerfile.amd64
new file mode 100644
index 0000000..0632b7b
--- /dev/null
+++ b/Dockerfile.amd64
@@ -0,0 +1,18 @@
+FROM golang:1.14.1 AS builder
+RUN apt install git -y
+RUN mkdir -p /go/src/zabov
+RUN git clone https://git.keinpfusch.net/loweel/zabov /go/src/zabov
+WORKDIR /go/src/zabov
+ENV GO111MODULE=auto
+RUN go get ; go build -mod=vendor
+
+FROM debian:latest
+RUN apt update
+RUN apt upgrade -y
+RUN apt install ca-certificates -y
+RUN mkdir -p /opt/zabov
+WORKDIR /opt/zabov
+COPY --from=builder /go/src/zabov /opt/zabov
+EXPOSE 53/udp
+ENTRYPOINT ["/opt/zabov/zabov"]
+
diff --git a/Dockerfile.arm32v7 b/Dockerfile.arm32v7
new file mode 100644
index 0000000..606e3d4
--- /dev/null
+++ b/Dockerfile.arm32v7
@@ -0,0 +1,17 @@
+FROM arm32v7/golang:1.14.1 AS builder
+RUN apt install git -y
+RUN mkdir -p /go/src/zabov
+RUN git clone https://git.keinpfusch.net/loweel/zabov /go/src/zabov
+WORKDIR /go/src/zabov
+ENV GO111MODULE=auto
+RUN go get ; go build -mod=vendor
+
+FROM arm32v7/debian:latest
+RUN apt update
+RUN apt upgrade -y
+RUN apt install ca-certificates -y
+RUN mkdir -p /opt/zabov
+WORKDIR /opt/zabov
+COPY --from=builder /go/src/zabov /opt/zabov
+EXPOSE 53/udp
+ENTRYPOINT ["/opt/zabov/zabov"]
diff --git a/Dockerfile.arm64v8 b/Dockerfile.arm64v8
new file mode 100644
index 0000000..aa716eb
--- /dev/null
+++ b/Dockerfile.arm64v8
@@ -0,0 +1,17 @@
+FROM arm64v8/golang:1.14.1 AS builder
+RUN apt install git -y
+RUN mkdir -p /go/src/zabov
+RUN git clone https://git.keinpfusch.net/loweel/zabov /go/src/zabov
+WORKDIR /go/src/zabov
+ENV GO111MODULE=auto
+RUN go get ; go build -mod=vendor
+
+FROM arm64v8/debian:latest
+RUN apt update
+RUN apt upgrade -y
+RUN apt install ca-certificates -y
+RUN mkdir -p /opt/zabov
+WORKDIR /opt/zabov
+COPY --from=builder /go/src/zabov /opt/zabov
+EXPOSE 53/udp
+ENTRYPOINT ["/opt/zabov/zabov"]
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..fd3b63f
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,14 @@
+ Copyright (C) 2020 loweel@keinpfusch.net
+
+ This program is free software: you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..6a84604
--- /dev/null
+++ b/README.md
@@ -0,0 +1,91 @@
+# zabov
+
+Tiny replacement for piHole DNS filter
+
+Still Work in progress, usable.
+
+Idea is to produce a very simple, no-web-interface , IP DNS blocker.
+
+# INSTALL
+
+Zabov requires golang 1.13 or later.
+
+
+git clone https://git.keinpfusch.net/Loweel/zabov.git
+cd zabov
+go get
+go build -mod=vendor
+
+
+Then, edit config.json: please notice config.json must be in the same folder of the executable you run.
+
+
+Just a few words about "singlefilters" and "doublefilters":
+
+Data must be downloaded from URLs of blacklist mantainers.They may come in different formats.
+
+There are two kinds of blacklists:
+
+One is the format zabov calls "singlefilter", where we find a single column , full of domains:
+
+
+domain1.com
+domain2.com
+domain3.com
+
+
+The second is the format zabov calls "doublefilter" (a file in "/etc/hosts" format, to be precise), where there is an IP, usually localhost or 0.0.0.0 and then the domain:
+
+
+127.0.0.1 domain1.com
+127.0.0.1 domain2.com
+127.0.0.1 domain3.com
+
+
+This is why configuration file has two separated items.
+
+The config file should look like:
+
+
+{
+ "zabov": {
+ "port":"53",
+ "proto":"udp",
+ "ipaddr":"127.0.0.1",
+ "upstream":"./dns-upstream.txt",
+ "cachettl": "4",
+ "killfilettl": "12",
+ "singlefilters":"./urls-hosts.txt" ,
+ "doublefilters":"./urls-domains.txt",
+ "blackholeip":"127.0.0.1",
+ "hostsfile":"./urls-local.txt"
+ }
+
+}
+
+
+
+
+
+Where:
+
+- port is the port number. Usually is 53, you can change for docker, if you like
+- proto is the protocol. Choices are "udp", "tcp", "tcp/udp"
+- ipaddr is the port to listen to. Maybe empty, (which will result in listening to 0.0.0.0) to avoid issues with docker.
+- upstream: file containing all DNS we want to query : each line in format IP:PORT
+- cachettl: amount of time the cache is kept (in hours)
+- killfilettl: refresh time for _killfiles_
+- singlefilters: name of the file for blacklists following the "singlefilter" schema.(one URL per line)
+- doublefilters: name of the file, for blacklists following the "doublefilter" schema.(one URL per line)
+- blackholeip: IP address to return when the IP is banned. This is because you may want to avoid MX issues, mail loops on localhost, or you have a web server running on localhost
+- hostsfile: path where you keep your local blacklistfile : this is in the format "singlefilter", meaning one domain per line, unlike hosts file.
+
+# DOCKER
+Multistage Dockerfiles are provided for AMD64, ARMv7, ARM64V8
+
+# TODO:
+
+- ~~caching~~
+- monitoring port
+
+
diff --git a/adlist_hosts.go b/adlist_hosts.go
new file mode 100644
index 0000000..5e9150d
--- /dev/null
+++ b/adlist_hosts.go
@@ -0,0 +1,96 @@
+package main
+
+import (
+ "bufio"
+ "errors"
+ "fmt"
+ "net"
+ "net/http"
+
+ "strings"
+ "time"
+)
+
+func init() {
+ go downloadDoubleThread()
+}
+
+//DoubleIndexFilter puts the domains inside file
+func DoubleIndexFilter(durl string) error {
+
+ fmt.Println("Retrieving HostFile from: ", durl)
+
+ var err error
+
+ // Get the data
+ resp, err := http.Get(durl)
+ if err != nil {
+ fmt.Println("HTTP problem: ", err)
+ return err
+ }
+ defer resp.Body.Close()
+
+ if resp.StatusCode == 200 { // OK
+ fmt.Println(durl + " Response: OK")
+ } else {
+ fmt.Println("Server <"+durl+"> returned status code: ", resp.StatusCode)
+ return errors.New("Server <" + durl + "> returned status code: " + resp.Status)
+ }
+
+ scanner := bufio.NewScanner(resp.Body)
+ splitter := func(c rune) bool {
+ return c == ' ' || c == '\t'
+ }
+
+ var numLines int64
+
+ for scanner.Scan() {
+
+ line := scanner.Text()
+
+ h := strings.FieldsFunc(line, splitter)
+
+ if h == nil {
+ continue
+ }
+
+ if len(h) < 2 {
+ continue
+ }
+
+ if net.ParseIP(h[0]) != nil {
+ DomainKill(h[1], durl)
+
+ // fmt.Println("MATCH: ", h[1])
+ numLines++
+ } else {
+ incrementStats("Malformed HostLines "+durl, 1)
+ // fmt.Println("Malformed line: <" + line + ">")
+ }
+
+ }
+
+ fmt.Println("Finished to parse: "+durl+" ,number of lines", numLines)
+
+ return err
+
+}
+
+func getDoubleFilters() {
+
+ s := fileByLines(ZabovDoubleBL)
+
+ for _, a := range s {
+ DoubleIndexFilter(a)
+ }
+
+}
+
+func downloadDoubleThread() {
+ fmt.Println("Starting updater of DOUBLE lists, each (hours):", ZabovKillTTL)
+ for {
+ getDoubleFilters()
+ time.Sleep(time.Duration(ZabovKillTTL) * time.Hour)
+ }
+
+}
diff --git a/adlist_single.go b/adlist_single.go
new file mode 100644
index 0000000..6945c5e
--- /dev/null
+++ b/adlist_single.go
@@ -0,0 +1,93 @@
+package main
+
+import (
+ "bufio"
+ "errors"
+ "fmt"
+ "net/http"
+ "strings"
+ "time"
+)
+
+func init() {
+ go downloadThread()
+}
+
+//SingleIndexFilter puts the domains inside file
+func SingleIndexFilter(durl string) error {
+
+ fmt.Println("Retrieving DomainFile from: ", durl)
+
+ var err error
+
+ // Get the data
+ resp, err := http.Get(durl)
+ if err != nil {
+ fmt.Println("HTTP Problem: ", err)
+ return err
+ }
+ defer resp.Body.Close()
+
+ if resp.StatusCode == 200 { // OK
+ fmt.Println(durl + " Response: OK")
+ } else {
+ fmt.Println("Server <"+durl+"> returned status code: ", resp.StatusCode)
+ return errors.New("Server <" + durl + "> returned status code: " + resp.Status)
+ }
+
+ scanner := bufio.NewScanner(resp.Body)
+ splitter := func(c rune) bool {
+ return c == ' ' || c == '\t'
+ }
+
+ var numLines int64
+
+ for scanner.Scan() {
+
+ line := scanner.Text()
+
+ h := strings.FieldsFunc(line, splitter)
+
+ if h == nil {
+ continue
+ }
+
+ if len(h) < 1 {
+ continue
+ }
+
+ if !strings.Contains(h[0], "#") {
+ DomainKill(h[0], durl)
+ // fmt.Println("MATCH: ", h[1])
+ numLines++
+ } else {
+ incrementStats("Malformed DomainLines "+durl, 1)
+ // fmt.Println("Malformed line: <" + line + ">")
+ }
+
+ }
+
+ fmt.Println("Finished to parse: "+durl+" ,number of lines", numLines)
+
+ return err
+
+}
+
+func getSingleFilters() {
+
+ s := fileByLines(ZabovSingleBL)
+
+ for _, a := range s {
+ SingleIndexFilter(a)
+ }
+
+}
+
+func downloadThread() {
+ fmt.Println("Starting updater of SINGLE lists, each (hours): ", ZabovKillTTL)
+ for {
+ getSingleFilters()
+ time.Sleep(time.Duration(ZabovKillTTL) * time.Hour)
+ }
+
+}
diff --git a/config.json b/config.json
new file mode 100644
index 0000000..79394d9
--- /dev/null
+++ b/config.json
@@ -0,0 +1,15 @@
+{
+ "zabov": {
+ "port":"53",
+ "proto":"udp",
+ "ipaddr":"0.0.0.0",
+ "upstream":"./dns-upstream.txt" ,
+ "cachettl": 1,
+ "killfilettl": 12,
+ "singlefilters":"./urls-domains.txt" ,
+ "doublefilters":"./urls-hosts.txt",
+ "blackholeip":"127.0.0.1",
+ "hostsfile":"./urls-local.txt"
+ }
+
+}
diff --git a/dns-upstream.txt b/dns-upstream.txt
new file mode 100644
index 0000000..83a6424
--- /dev/null
+++ b/dns-upstream.txt
@@ -0,0 +1,387 @@
+194.150.168.168:53
+194.25.0.68:53
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\ No newline at end of file
diff --git a/dns_client.go b/dns_client.go
new file mode 100644
index 0000000..6aa97a0
--- /dev/null
+++ b/dns_client.go
@@ -0,0 +1,98 @@
+package main
+
+import (
+ "fmt"
+ "time"
+
+ "math/rand"
+ "strings"
+
+ "github.com/miekg/dns"
+)
+
+//ForwardQuery forwards the query to the upstream server
+//first server to answer wins
+func ForwardQuery(query *dns.Msg) *dns.Msg {
+
+ go incrementStats("ForwardQueries", 1)
+
+ r := new(dns.Msg)
+ r.SetReply(query)
+ r.Authoritative = true
+
+ fqdn := strings.TrimRight(query.Question[0].Name, ".")
+
+ lfqdn := fmt.Sprintf("%d", query.Question[0].Qtype) + "." + fqdn
+ if cached := GetDomainFromCache(lfqdn); cached != nil {
+ go incrementStats("CacheHit", 1)
+ cached.SetReply(query)
+ cached.Authoritative = true
+ return cached
+
+ }
+
+ c := new(dns.Client)
+
+ c.ReadTimeout = 500 * time.Millisecond
+ c.WriteTimeout = 500 * time.Millisecond
+
+ for {
+ // round robin with retry
+
+ if !NetworkUp {
+ time.Sleep(10 * time.Second)
+ go incrementStats("Network Problems ", 1)
+ continue
+ }
+
+ d := oneTimeDNS()
+
+ in, _, err := c.Exchange(query, d)
+ if err != nil {
+ fmt.Printf("Problem with DNS %s : %s\n", d, err.Error())
+ go incrementStats("DNS Problems "+d, 1)
+ continue
+ } else {
+ go incrementStats(d, 1)
+ in.SetReply(query)
+ in.Authoritative = true
+ go DomainCache(lfqdn, in)
+ return in
+
+ }
+
+ }
+
+}
+
+func init() {
+
+ fmt.Println("DNS client engine starting")
+ NetworkUp = checkNetworkUp()
+
+ if NetworkUp {
+ fmt.Println("[OK]: Network is UP")
+ } else {
+ fmt.Println("[KO] Network is DOWN: system will check again in 2 minutes")
+ }
+
+}
+
+func oneTimeDNS() (dns string) {
+
+ rand.Seed(time.Now().Unix())
+
+ upl := ZabovDNSArray
+
+ if len(upl) < 1 {
+ fmt.Println("No DNS defined, using default 127.0.0.53:53. Hope it works!")
+ return "127.0.0.53:53"
+ }
+
+ n := rand.Intn(128*len(upl)) % len(upl)
+
+ dns = upl[n]
+
+ return
+
+}
diff --git a/dns_handler.go b/dns_handler.go
new file mode 100644
index 0000000..9cf0fb1
--- /dev/null
+++ b/dns_handler.go
@@ -0,0 +1,44 @@
+package main
+
+import (
+ "net"
+ "strings"
+
+ "github.com/miekg/dns"
+)
+
+func (mydns *handler) ServeDNS(w dns.ResponseWriter, r *dns.Msg) {
+ go incrementStats("TotalQueries", 1)
+
+ remIP, _, e := net.SplitHostPort(w.RemoteAddr().String())
+ if e != nil {
+ go incrementStats("CLIENT: "+remIP, 1)
+ }
+
+ msg := dns.Msg{}
+ msg.SetReply(r)
+
+ switch r.Question[0].Qtype {
+ case dns.TypeA:
+ msg.Authoritative = true
+ domain := msg.Question[0].Name
+ fqdn := strings.TrimRight(domain, ".")
+
+ if domainInKillfile(fqdn) {
+ go incrementStats("Killed", 1)
+
+ msg.Answer = append(msg.Answer, &dns.A{
+ Hdr: dns.RR_Header{Name: domain, Rrtype: dns.TypeA, Class: dns.ClassINET, Ttl: 60},
+ A: net.ParseIP(ZabovAddBL),
+ })
+ } else {
+ ret := ForwardQuery(r)
+ w.WriteMsg(ret)
+ }
+ default:
+ ret := ForwardQuery(r)
+ w.WriteMsg(ret)
+ }
+ w.WriteMsg(&msg)
+
+}
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..ea3296a
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,8 @@
+module zabov
+
+go 1.13
+
+require (
+ github.com/miekg/dns v1.1.27
+ github.com/syndtr/goleveldb v1.0.0
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..ddc346b
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,36 @@
+github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
+github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db h1:woRePGFeVFfLKN/pOkfl+p/TAqKOfFu+7KPlMVpok/w=
+github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
+github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
+github.com/miekg/dns v1.1.27 h1:aEH/kqUzUxGJ/UHcEKdJY+ugH6WEzsEBBSPa8zuy1aM=
+github.com/miekg/dns v1.1.27/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
+github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
+github.com/onsi/ginkgo v1.7.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
+github.com/onsi/gomega v1.4.3/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
+github.com/syndtr/goleveldb v1.0.0 h1:fBdIW9lB4Iz0n9khmH8w27SJ3QEJ7+IgjPEwGSZiFdE=
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+golang.org/x/sys v0.0.0-20190924154521-2837fb4f24fe/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/tools v0.0.0-20191216052735-49a3e744a425/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
+gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/hostfile.go b/hostfile.go
new file mode 100644
index 0000000..51e4508
--- /dev/null
+++ b/hostfile.go
@@ -0,0 +1,59 @@
+package main
+
+import (
+ "bufio"
+ "fmt"
+ "os"
+)
+
+func init() {
+
+ fmt.Println("Ingesting local hosts file")
+ ingestLocalBlacklist()
+
+}
+
+func ingestLocalBlacklist() {
+
+ file, err := os.Open(ZabovHostsFile)
+ if err != nil {
+ fmt.Println(err.Error())
+ }
+ defer file.Close()
+
+ scanner := bufio.NewScanner(file)
+ for scanner.Scan() {
+ d := scanner.Text()
+ DomainKill(d, ZabovHostsFile)
+ incrementStats("Blacklist", 1)
+
+ }
+
+ if err := scanner.Err(); err != nil {
+ fmt.Println(err.Error())
+ }
+
+}
+
+func fileByLines(filename string) (blurls []string) {
+
+ file, err := os.Open(filename)
+ if err != nil {
+ fmt.Println(err.Error())
+ }
+ defer file.Close()
+
+ scanner := bufio.NewScanner(file)
+ for scanner.Scan() {
+ d := scanner.Text()
+ blurls = append(blurls, d)
+
+ }
+
+ if err := scanner.Err(); err != nil {
+ fmt.Println(err.Error())
+ }
+
+ return
+
+}
diff --git a/main.go b/main.go
new file mode 100644
index 0000000..aaf1ebc
--- /dev/null
+++ b/main.go
@@ -0,0 +1,46 @@
+package main
+
+import (
+ "log"
+
+ "github.com/miekg/dns"
+)
+
+//MyDNS is my dns server
+var MyDNS *dns.Server
+
+//ZabovUpDNS keeps the name of upstream DNSs
+var ZabovUpDNS string
+
+//ZabovSingleBL list of urls returning a file with just names of domains
+var ZabovSingleBL string
+
+//ZabovDoubleBL list of urls returning a file with IPdomain
+var ZabovDoubleBL string
+
+//ZabovAddBL is the IP we want to send all the clients to. Usually is 127.0.0.1
+var ZabovAddBL string
+
+//ZabovCacheTTL is the amount of hours we cache records of DNS
+var ZabovCacheTTL int
+
+//ZabovKillTTL is the amount of hours we cache the killfile
+var ZabovKillTTL int
+
+//ZabovHostsFile is the file we use to keep our hosts
+var ZabovHostsFile string
+
+//ZabovDNSArray is the array containing all the DNS we mention
+var ZabovDNSArray []string
+
+type handler struct{}
+
+func main() {
+
+ MyDNS.Handler = &handler{}
+ if err := MyDNS.ListenAndServe(); err != nil {
+ log.Printf("Failed to set udp listener %s\n", err.Error())
+ } else {
+ log.Printf("Listener running \n")
+ }
+}
diff --git a/urls-domains.txt b/urls-domains.txt
new file mode 100644
index 0000000..579b04a
--- /dev/null
+++ b/urls-domains.txt
@@ -0,0 +1,37 @@
+https://mirror1.malwaredomains.com/files/justdomains
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/adaway.org/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/adblock-nocoin-list/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/adguard-simplified/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/anudeepnd-adservers/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/disconnect.me-ad/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/disconnect.me-malvertising/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/disconnect.me-malware/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/disconnect.me-tracking/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/easylist/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/easyprivacy/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/eth-phishing-detect/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/fademind-add.2o7net/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/fademind-add.dead/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/fademind-add.risk/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/fademind-add.spam/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/kadhosts/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/malwaredomainlist.com/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/malwaredomains.com-immortaldomains/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/malwaredomains.com-justdomains/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/matomo.org-spammers/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/mitchellkrogza-badd-boyz-hosts/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/pgl.yoyo.org/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/ransomwaretracker.abuse.ch/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/someonewhocares.org/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/spam404.com/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/stevenblack/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/winhelp2002.mvps.org/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/zerodot1-coinblockerlists-browser/list.txt
+https://raw.githubusercontent.com/hectorm/hmirror/master/data/zeustracker.abuse.ch/list.txt
+https://raw.githubusercontent.com/CHEF-KOCH/Audio-fingerprint-pages/master/AudioFp.txt
+https://raw.githubusercontent.com/CHEF-KOCH/Canvas-fingerprinting-pages/master/Canvas.txt
+https://raw.githubusercontent.com/CHEF-KOCH/WebRTC-tracking/master/WebRTC.txt
+https://raw.githubusercontent.com/CHEF-KOCH/CKs-FilterList/master/Anti-Corp/hosts/NSABlocklist.txt
+https://gitlab.com/quidsup/notrack-blocklists/raw/master/notrack-blocklist.txt
+https://gitlab.com/quidsup/notrack-blocklists/raw/master/notrack-malware.txt
+https://www.stopforumspam.com/downloads/toxic_domains_whole.txt
diff --git a/urls-hosts.txt b/urls-hosts.txt
new file mode 100644
index 0000000..5218eaa
--- /dev/null
+++ b/urls-hosts.txt
@@ -0,0 +1,12 @@
+http://sysctl.org/cameleon/hosts
+https://www.malwaredomainlist.com/hostslist/hosts.txt
+https://adaway.org/hosts.txt
+https://raw.githubusercontent.com/StevenBlack/hosts/master/hosts
+https://raw.githubusercontent.com/StevenBlack/hosts/master/alternates/fakenews/hosts
+https://raw.githubusercontent.com/StevenBlack/hosts/master/alternates/gambling/hosts
+https://someonewhocares.org/hosts/hosts
+https://getadhell.com/standard-package.txt
+https://raw.githubusercontent.com/hoshsadiq/adblock-nocoin-list/master/hosts.txt
+https://raw.githubusercontent.com/notracking/hosts-blocklists/master/hostnames.txt
+https://raw.githubusercontent.com/anudeepND/blacklist/master/adservers.txt
+https://raw.githubusercontent.com/anudeepND/blacklist/master/facebook.txt
\ No newline at end of file
diff --git a/urls-local.txt b/urls-local.txt
new file mode 100644
index 0000000..910276b
--- /dev/null
+++ b/urls-local.txt
@@ -0,0 +1,8 @@
+blc.vodafone.com
+gab.com
+gab.ai
+freespeechextremist.com
+neckbeard.xyz
+funkwhale.it
+social.byoblu.com
+
diff --git a/vendor/github.com/golang/snappy/.gitignore b/vendor/github.com/golang/snappy/.gitignore
new file mode 100644
index 0000000..042091d
--- /dev/null
+++ b/vendor/github.com/golang/snappy/.gitignore
@@ -0,0 +1,16 @@
+cmd/snappytool/snappytool
+testdata/bench
+
+# These explicitly listed benchmark data files are for an obsolete version of
+# snappy_test.go.
+testdata/alice29.txt
+testdata/asyoulik.txt
+testdata/fireworks.jpeg
+testdata/geo.protodata
+testdata/html
+testdata/html_x_4
+testdata/kppkn.gtb
+testdata/lcet10.txt
+testdata/paper-100k.pdf
+testdata/plrabn12.txt
+testdata/urls.10K
diff --git a/vendor/github.com/golang/snappy/AUTHORS b/vendor/github.com/golang/snappy/AUTHORS
new file mode 100644
index 0000000..bcfa195
--- /dev/null
+++ b/vendor/github.com/golang/snappy/AUTHORS
@@ -0,0 +1,15 @@
+# This is the official list of Snappy-Go authors for copyright purposes.
+# This file is distinct from the CONTRIBUTORS files.
+# See the latter for an explanation.
+
+# Names should be added to this file as
+# Name or Organization
+# The email address is not required for organizations.
+
+# Please keep the list sorted.
+
+Damian Gryski
+Google Inc.
+Jan Mercl <0xjnml@gmail.com>
+Rodolfo Carvalho
+Sebastien Binet
diff --git a/vendor/github.com/golang/snappy/CONTRIBUTORS b/vendor/github.com/golang/snappy/CONTRIBUTORS
new file mode 100644
index 0000000..931ae31
--- /dev/null
+++ b/vendor/github.com/golang/snappy/CONTRIBUTORS
@@ -0,0 +1,37 @@
+# This is the official list of people who can contribute
+# (and typically have contributed) code to the Snappy-Go repository.
+# The AUTHORS file lists the copyright holders; this file
+# lists people. For example, Google employees are listed here
+# but not in AUTHORS, because Google holds the copyright.
+#
+# The submission process automatically checks to make sure
+# that people submitting code are listed in this file (by email address).
+#
+# Names should be added to this file only after verifying that
+# the individual or the individual's organization has agreed to
+# the appropriate Contributor License Agreement, found here:
+#
+# http://code.google.com/legal/individual-cla-v1.0.html
+# http://code.google.com/legal/corporate-cla-v1.0.html
+#
+# The agreement for individuals can be filled out on the web.
+#
+# When adding J Random Contributor's name to this file,
+# either J's name or J's organization's name should be
+# added to the AUTHORS file, depending on whether the
+# individual or corporate CLA was used.
+
+# Names should be added to this file like so:
+# Name
+
+# Please keep the list sorted.
+
+Damian Gryski
+Jan Mercl <0xjnml@gmail.com>
+Kai Backman
+Marc-Antoine Ruel
+Nigel Tao
+Rob Pike
+Rodolfo Carvalho
+Russ Cox
+Sebastien Binet
diff --git a/vendor/github.com/golang/snappy/LICENSE b/vendor/github.com/golang/snappy/LICENSE
new file mode 100644
index 0000000..6050c10
--- /dev/null
+++ b/vendor/github.com/golang/snappy/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2011 The Snappy-Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+ * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/golang/snappy/README b/vendor/github.com/golang/snappy/README
new file mode 100644
index 0000000..cea1287
--- /dev/null
+++ b/vendor/github.com/golang/snappy/README
@@ -0,0 +1,107 @@
+The Snappy compression format in the Go programming language.
+
+To download and install from source:
+$ go get github.com/golang/snappy
+
+Unless otherwise noted, the Snappy-Go source files are distributed
+under the BSD-style license found in the LICENSE file.
+
+
+
+Benchmarks.
+
+The golang/snappy benchmarks include compressing (Z) and decompressing (U) ten
+or so files, the same set used by the C++ Snappy code (github.com/google/snappy
+and note the "google", not "golang"). On an "Intel(R) Core(TM) i7-3770 CPU @
+3.40GHz", Go's GOARCH=amd64 numbers as of 2016-05-29:
+
+"go test -test.bench=."
+
+_UFlat0-8 2.19GB/s ± 0% html
+_UFlat1-8 1.41GB/s ± 0% urls
+_UFlat2-8 23.5GB/s ± 2% jpg
+_UFlat3-8 1.91GB/s ± 0% jpg_200
+_UFlat4-8 14.0GB/s ± 1% pdf
+_UFlat5-8 1.97GB/s ± 0% html4
+_UFlat6-8 814MB/s ± 0% txt1
+_UFlat7-8 785MB/s ± 0% txt2
+_UFlat8-8 857MB/s ± 0% txt3
+_UFlat9-8 719MB/s ± 1% txt4
+_UFlat10-8 2.84GB/s ± 0% pb
+_UFlat11-8 1.05GB/s ± 0% gaviota
+
+_ZFlat0-8 1.04GB/s ± 0% html
+_ZFlat1-8 534MB/s ± 0% urls
+_ZFlat2-8 15.7GB/s ± 1% jpg
+_ZFlat3-8 740MB/s ± 3% jpg_200
+_ZFlat4-8 9.20GB/s ± 1% pdf
+_ZFlat5-8 991MB/s ± 0% html4
+_ZFlat6-8 379MB/s ± 0% txt1
+_ZFlat7-8 352MB/s ± 0% txt2
+_ZFlat8-8 396MB/s ± 1% txt3
+_ZFlat9-8 327MB/s ± 1% txt4
+_ZFlat10-8 1.33GB/s ± 1% pb
+_ZFlat11-8 605MB/s ± 1% gaviota
+
+
+
+"go test -test.bench=. -tags=noasm"
+
+_UFlat0-8 621MB/s ± 2% html
+_UFlat1-8 494MB/s ± 1% urls
+_UFlat2-8 23.2GB/s ± 1% jpg
+_UFlat3-8 1.12GB/s ± 1% jpg_200
+_UFlat4-8 4.35GB/s ± 1% pdf
+_UFlat5-8 609MB/s ± 0% html4
+_UFlat6-8 296MB/s ± 0% txt1
+_UFlat7-8 288MB/s ± 0% txt2
+_UFlat8-8 309MB/s ± 1% txt3
+_UFlat9-8 280MB/s ± 1% txt4
+_UFlat10-8 753MB/s ± 0% pb
+_UFlat11-8 400MB/s ± 0% gaviota
+
+_ZFlat0-8 409MB/s ± 1% html
+_ZFlat1-8 250MB/s ± 1% urls
+_ZFlat2-8 12.3GB/s ± 1% jpg
+_ZFlat3-8 132MB/s ± 0% jpg_200
+_ZFlat4-8 2.92GB/s ± 0% pdf
+_ZFlat5-8 405MB/s ± 1% html4
+_ZFlat6-8 179MB/s ± 1% txt1
+_ZFlat7-8 170MB/s ± 1% txt2
+_ZFlat8-8 189MB/s ± 1% txt3
+_ZFlat9-8 164MB/s ± 1% txt4
+_ZFlat10-8 479MB/s ± 1% pb
+_ZFlat11-8 270MB/s ± 1% gaviota
+
+
+
+For comparison (Go's encoded output is byte-for-byte identical to C++'s), here
+are the numbers from C++ Snappy's
+
+make CXXFLAGS="-O2 -DNDEBUG -g" clean snappy_unittest.log && cat snappy_unittest.log
+
+BM_UFlat/0 2.4GB/s html
+BM_UFlat/1 1.4GB/s urls
+BM_UFlat/2 21.8GB/s jpg
+BM_UFlat/3 1.5GB/s jpg_200
+BM_UFlat/4 13.3GB/s pdf
+BM_UFlat/5 2.1GB/s html4
+BM_UFlat/6 1.0GB/s txt1
+BM_UFlat/7 959.4MB/s txt2
+BM_UFlat/8 1.0GB/s txt3
+BM_UFlat/9 864.5MB/s txt4
+BM_UFlat/10 2.9GB/s pb
+BM_UFlat/11 1.2GB/s gaviota
+
+BM_ZFlat/0 944.3MB/s html (22.31 %)
+BM_ZFlat/1 501.6MB/s urls (47.78 %)
+BM_ZFlat/2 14.3GB/s jpg (99.95 %)
+BM_ZFlat/3 538.3MB/s jpg_200 (73.00 %)
+BM_ZFlat/4 8.3GB/s pdf (83.30 %)
+BM_ZFlat/5 903.5MB/s html4 (22.52 %)
+BM_ZFlat/6 336.0MB/s txt1 (57.88 %)
+BM_ZFlat/7 312.3MB/s txt2 (61.91 %)
+BM_ZFlat/8 353.1MB/s txt3 (54.99 %)
+BM_ZFlat/9 289.9MB/s txt4 (66.26 %)
+BM_ZFlat/10 1.2GB/s pb (19.68 %)
+BM_ZFlat/11 527.4MB/s gaviota (37.72 %)
diff --git a/vendor/github.com/golang/snappy/decode.go b/vendor/github.com/golang/snappy/decode.go
new file mode 100644
index 0000000..72efb03
--- /dev/null
+++ b/vendor/github.com/golang/snappy/decode.go
@@ -0,0 +1,237 @@
+// Copyright 2011 The Snappy-Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package snappy
+
+import (
+ "encoding/binary"
+ "errors"
+ "io"
+)
+
+var (
+ // ErrCorrupt reports that the input is invalid.
+ ErrCorrupt = errors.New("snappy: corrupt input")
+ // ErrTooLarge reports that the uncompressed length is too large.
+ ErrTooLarge = errors.New("snappy: decoded block is too large")
+ // ErrUnsupported reports that the input isn't supported.
+ ErrUnsupported = errors.New("snappy: unsupported input")
+
+ errUnsupportedLiteralLength = errors.New("snappy: unsupported literal length")
+)
+
+// DecodedLen returns the length of the decoded block.
+func DecodedLen(src []byte) (int, error) {
+ v, _, err := decodedLen(src)
+ return v, err
+}
+
+// decodedLen returns the length of the decoded block and the number of bytes
+// that the length header occupied.
+func decodedLen(src []byte) (blockLen, headerLen int, err error) {
+ v, n := binary.Uvarint(src)
+ if n <= 0 || v > 0xffffffff {
+ return 0, 0, ErrCorrupt
+ }
+
+ const wordSize = 32 << (^uint(0) >> 32 & 1)
+ if wordSize == 32 && v > 0x7fffffff {
+ return 0, 0, ErrTooLarge
+ }
+ return int(v), n, nil
+}
+
+const (
+ decodeErrCodeCorrupt = 1
+ decodeErrCodeUnsupportedLiteralLength = 2
+)
+
+// Decode returns the decoded form of src. The returned slice may be a sub-
+// slice of dst if dst was large enough to hold the entire decoded block.
+// Otherwise, a newly allocated slice will be returned.
+//
+// The dst and src must not overlap. It is valid to pass a nil dst.
+func Decode(dst, src []byte) ([]byte, error) {
+ dLen, s, err := decodedLen(src)
+ if err != nil {
+ return nil, err
+ }
+ if dLen <= len(dst) {
+ dst = dst[:dLen]
+ } else {
+ dst = make([]byte, dLen)
+ }
+ switch decode(dst, src[s:]) {
+ case 0:
+ return dst, nil
+ case decodeErrCodeUnsupportedLiteralLength:
+ return nil, errUnsupportedLiteralLength
+ }
+ return nil, ErrCorrupt
+}
+
+// NewReader returns a new Reader that decompresses from r, using the framing
+// format described at
+// https://github.com/google/snappy/blob/master/framing_format.txt
+func NewReader(r io.Reader) *Reader {
+ return &Reader{
+ r: r,
+ decoded: make([]byte, maxBlockSize),
+ buf: make([]byte, maxEncodedLenOfMaxBlockSize+checksumSize),
+ }
+}
+
+// Reader is an io.Reader that can read Snappy-compressed bytes.
+type Reader struct {
+ r io.Reader
+ err error
+ decoded []byte
+ buf []byte
+ // decoded[i:j] contains decoded bytes that have not yet been passed on.
+ i, j int
+ readHeader bool
+}
+
+// Reset discards any buffered data, resets all state, and switches the Snappy
+// reader to read from r. This permits reusing a Reader rather than allocating
+// a new one.
+func (r *Reader) Reset(reader io.Reader) {
+ r.r = reader
+ r.err = nil
+ r.i = 0
+ r.j = 0
+ r.readHeader = false
+}
+
+func (r *Reader) readFull(p []byte, allowEOF bool) (ok bool) {
+ if _, r.err = io.ReadFull(r.r, p); r.err != nil {
+ if r.err == io.ErrUnexpectedEOF || (r.err == io.EOF && !allowEOF) {
+ r.err = ErrCorrupt
+ }
+ return false
+ }
+ return true
+}
+
+// Read satisfies the io.Reader interface.
+func (r *Reader) Read(p []byte) (int, error) {
+ if r.err != nil {
+ return 0, r.err
+ }
+ for {
+ if r.i < r.j {
+ n := copy(p, r.decoded[r.i:r.j])
+ r.i += n
+ return n, nil
+ }
+ if !r.readFull(r.buf[:4], true) {
+ return 0, r.err
+ }
+ chunkType := r.buf[0]
+ if !r.readHeader {
+ if chunkType != chunkTypeStreamIdentifier {
+ r.err = ErrCorrupt
+ return 0, r.err
+ }
+ r.readHeader = true
+ }
+ chunkLen := int(r.buf[1]) | int(r.buf[2])<<8 | int(r.buf[3])<<16
+ if chunkLen > len(r.buf) {
+ r.err = ErrUnsupported
+ return 0, r.err
+ }
+
+ // The chunk types are specified at
+ // https://github.com/google/snappy/blob/master/framing_format.txt
+ switch chunkType {
+ case chunkTypeCompressedData:
+ // Section 4.2. Compressed data (chunk type 0x00).
+ if chunkLen < checksumSize {
+ r.err = ErrCorrupt
+ return 0, r.err
+ }
+ buf := r.buf[:chunkLen]
+ if !r.readFull(buf, false) {
+ return 0, r.err
+ }
+ checksum := uint32(buf[0]) | uint32(buf[1])<<8 | uint32(buf[2])<<16 | uint32(buf[3])<<24
+ buf = buf[checksumSize:]
+
+ n, err := DecodedLen(buf)
+ if err != nil {
+ r.err = err
+ return 0, r.err
+ }
+ if n > len(r.decoded) {
+ r.err = ErrCorrupt
+ return 0, r.err
+ }
+ if _, err := Decode(r.decoded, buf); err != nil {
+ r.err = err
+ return 0, r.err
+ }
+ if crc(r.decoded[:n]) != checksum {
+ r.err = ErrCorrupt
+ return 0, r.err
+ }
+ r.i, r.j = 0, n
+ continue
+
+ case chunkTypeUncompressedData:
+ // Section 4.3. Uncompressed data (chunk type 0x01).
+ if chunkLen < checksumSize {
+ r.err = ErrCorrupt
+ return 0, r.err
+ }
+ buf := r.buf[:checksumSize]
+ if !r.readFull(buf, false) {
+ return 0, r.err
+ }
+ checksum := uint32(buf[0]) | uint32(buf[1])<<8 | uint32(buf[2])<<16 | uint32(buf[3])<<24
+ // Read directly into r.decoded instead of via r.buf.
+ n := chunkLen - checksumSize
+ if n > len(r.decoded) {
+ r.err = ErrCorrupt
+ return 0, r.err
+ }
+ if !r.readFull(r.decoded[:n], false) {
+ return 0, r.err
+ }
+ if crc(r.decoded[:n]) != checksum {
+ r.err = ErrCorrupt
+ return 0, r.err
+ }
+ r.i, r.j = 0, n
+ continue
+
+ case chunkTypeStreamIdentifier:
+ // Section 4.1. Stream identifier (chunk type 0xff).
+ if chunkLen != len(magicBody) {
+ r.err = ErrCorrupt
+ return 0, r.err
+ }
+ if !r.readFull(r.buf[:len(magicBody)], false) {
+ return 0, r.err
+ }
+ for i := 0; i < len(magicBody); i++ {
+ if r.buf[i] != magicBody[i] {
+ r.err = ErrCorrupt
+ return 0, r.err
+ }
+ }
+ continue
+ }
+
+ if chunkType <= 0x7f {
+ // Section 4.5. Reserved unskippable chunks (chunk types 0x02-0x7f).
+ r.err = ErrUnsupported
+ return 0, r.err
+ }
+ // Section 4.4 Padding (chunk type 0xfe).
+ // Section 4.6. Reserved skippable chunks (chunk types 0x80-0xfd).
+ if !r.readFull(r.buf[:chunkLen], false) {
+ return 0, r.err
+ }
+ }
+}
diff --git a/vendor/github.com/golang/snappy/decode_amd64.go b/vendor/github.com/golang/snappy/decode_amd64.go
new file mode 100644
index 0000000..fcd192b
--- /dev/null
+++ b/vendor/github.com/golang/snappy/decode_amd64.go
@@ -0,0 +1,14 @@
+// Copyright 2016 The Snappy-Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !appengine
+// +build gc
+// +build !noasm
+
+package snappy
+
+// decode has the same semantics as in decode_other.go.
+//
+//go:noescape
+func decode(dst, src []byte) int
diff --git a/vendor/github.com/golang/snappy/decode_amd64.s b/vendor/github.com/golang/snappy/decode_amd64.s
new file mode 100644
index 0000000..e6179f6
--- /dev/null
+++ b/vendor/github.com/golang/snappy/decode_amd64.s
@@ -0,0 +1,490 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !appengine
+// +build gc
+// +build !noasm
+
+#include "textflag.h"
+
+// The asm code generally follows the pure Go code in decode_other.go, except
+// where marked with a "!!!".
+
+// func decode(dst, src []byte) int
+//
+// All local variables fit into registers. The non-zero stack size is only to
+// spill registers and push args when issuing a CALL. The register allocation:
+// - AX scratch
+// - BX scratch
+// - CX length or x
+// - DX offset
+// - SI &src[s]
+// - DI &dst[d]
+// + R8 dst_base
+// + R9 dst_len
+// + R10 dst_base + dst_len
+// + R11 src_base
+// + R12 src_len
+// + R13 src_base + src_len
+// - R14 used by doCopy
+// - R15 used by doCopy
+//
+// The registers R8-R13 (marked with a "+") are set at the start of the
+// function, and after a CALL returns, and are not otherwise modified.
+//
+// The d variable is implicitly DI - R8, and len(dst)-d is R10 - DI.
+// The s variable is implicitly SI - R11, and len(src)-s is R13 - SI.
+TEXT ·decode(SB), NOSPLIT, $48-56
+ // Initialize SI, DI and R8-R13.
+ MOVQ dst_base+0(FP), R8
+ MOVQ dst_len+8(FP), R9
+ MOVQ R8, DI
+ MOVQ R8, R10
+ ADDQ R9, R10
+ MOVQ src_base+24(FP), R11
+ MOVQ src_len+32(FP), R12
+ MOVQ R11, SI
+ MOVQ R11, R13
+ ADDQ R12, R13
+
+loop:
+ // for s < len(src)
+ CMPQ SI, R13
+ JEQ end
+
+ // CX = uint32(src[s])
+ //
+ // switch src[s] & 0x03
+ MOVBLZX (SI), CX
+ MOVL CX, BX
+ ANDL $3, BX
+ CMPL BX, $1
+ JAE tagCopy
+
+ // ----------------------------------------
+ // The code below handles literal tags.
+
+ // case tagLiteral:
+ // x := uint32(src[s] >> 2)
+ // switch
+ SHRL $2, CX
+ CMPL CX, $60
+ JAE tagLit60Plus
+
+ // case x < 60:
+ // s++
+ INCQ SI
+
+doLit:
+ // This is the end of the inner "switch", when we have a literal tag.
+ //
+ // We assume that CX == x and x fits in a uint32, where x is the variable
+ // used in the pure Go decode_other.go code.
+
+ // length = int(x) + 1
+ //
+ // Unlike the pure Go code, we don't need to check if length <= 0 because
+ // CX can hold 64 bits, so the increment cannot overflow.
+ INCQ CX
+
+ // Prepare to check if copying length bytes will run past the end of dst or
+ // src.
+ //
+ // AX = len(dst) - d
+ // BX = len(src) - s
+ MOVQ R10, AX
+ SUBQ DI, AX
+ MOVQ R13, BX
+ SUBQ SI, BX
+
+ // !!! Try a faster technique for short (16 or fewer bytes) copies.
+ //
+ // if length > 16 || len(dst)-d < 16 || len(src)-s < 16 {
+ // goto callMemmove // Fall back on calling runtime·memmove.
+ // }
+ //
+ // The C++ snappy code calls this TryFastAppend. It also checks len(src)-s
+ // against 21 instead of 16, because it cannot assume that all of its input
+ // is contiguous in memory and so it needs to leave enough source bytes to
+ // read the next tag without refilling buffers, but Go's Decode assumes
+ // contiguousness (the src argument is a []byte).
+ CMPQ CX, $16
+ JGT callMemmove
+ CMPQ AX, $16
+ JLT callMemmove
+ CMPQ BX, $16
+ JLT callMemmove
+
+ // !!! Implement the copy from src to dst as a 16-byte load and store.
+ // (Decode's documentation says that dst and src must not overlap.)
+ //
+ // This always copies 16 bytes, instead of only length bytes, but that's
+ // OK. If the input is a valid Snappy encoding then subsequent iterations
+ // will fix up the overrun. Otherwise, Decode returns a nil []byte (and a
+ // non-nil error), so the overrun will be ignored.
+ //
+ // Note that on amd64, it is legal and cheap to issue unaligned 8-byte or
+ // 16-byte loads and stores. This technique probably wouldn't be as
+ // effective on architectures that are fussier about alignment.
+ MOVOU 0(SI), X0
+ MOVOU X0, 0(DI)
+
+ // d += length
+ // s += length
+ ADDQ CX, DI
+ ADDQ CX, SI
+ JMP loop
+
+callMemmove:
+ // if length > len(dst)-d || length > len(src)-s { etc }
+ CMPQ CX, AX
+ JGT errCorrupt
+ CMPQ CX, BX
+ JGT errCorrupt
+
+ // copy(dst[d:], src[s:s+length])
+ //
+ // This means calling runtime·memmove(&dst[d], &src[s], length), so we push
+ // DI, SI and CX as arguments. Coincidentally, we also need to spill those
+ // three registers to the stack, to save local variables across the CALL.
+ MOVQ DI, 0(SP)
+ MOVQ SI, 8(SP)
+ MOVQ CX, 16(SP)
+ MOVQ DI, 24(SP)
+ MOVQ SI, 32(SP)
+ MOVQ CX, 40(SP)
+ CALL runtime·memmove(SB)
+
+ // Restore local variables: unspill registers from the stack and
+ // re-calculate R8-R13.
+ MOVQ 24(SP), DI
+ MOVQ 32(SP), SI
+ MOVQ 40(SP), CX
+ MOVQ dst_base+0(FP), R8
+ MOVQ dst_len+8(FP), R9
+ MOVQ R8, R10
+ ADDQ R9, R10
+ MOVQ src_base+24(FP), R11
+ MOVQ src_len+32(FP), R12
+ MOVQ R11, R13
+ ADDQ R12, R13
+
+ // d += length
+ // s += length
+ ADDQ CX, DI
+ ADDQ CX, SI
+ JMP loop
+
+tagLit60Plus:
+ // !!! This fragment does the
+ //
+ // s += x - 58; if uint(s) > uint(len(src)) { etc }
+ //
+ // checks. In the asm version, we code it once instead of once per switch case.
+ ADDQ CX, SI
+ SUBQ $58, SI
+ MOVQ SI, BX
+ SUBQ R11, BX
+ CMPQ BX, R12
+ JA errCorrupt
+
+ // case x == 60:
+ CMPL CX, $61
+ JEQ tagLit61
+ JA tagLit62Plus
+
+ // x = uint32(src[s-1])
+ MOVBLZX -1(SI), CX
+ JMP doLit
+
+tagLit61:
+ // case x == 61:
+ // x = uint32(src[s-2]) | uint32(src[s-1])<<8
+ MOVWLZX -2(SI), CX
+ JMP doLit
+
+tagLit62Plus:
+ CMPL CX, $62
+ JA tagLit63
+
+ // case x == 62:
+ // x = uint32(src[s-3]) | uint32(src[s-2])<<8 | uint32(src[s-1])<<16
+ MOVWLZX -3(SI), CX
+ MOVBLZX -1(SI), BX
+ SHLL $16, BX
+ ORL BX, CX
+ JMP doLit
+
+tagLit63:
+ // case x == 63:
+ // x = uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24
+ MOVL -4(SI), CX
+ JMP doLit
+
+// The code above handles literal tags.
+// ----------------------------------------
+// The code below handles copy tags.
+
+tagCopy4:
+ // case tagCopy4:
+ // s += 5
+ ADDQ $5, SI
+
+ // if uint(s) > uint(len(src)) { etc }
+ MOVQ SI, BX
+ SUBQ R11, BX
+ CMPQ BX, R12
+ JA errCorrupt
+
+ // length = 1 + int(src[s-5])>>2
+ SHRQ $2, CX
+ INCQ CX
+
+ // offset = int(uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24)
+ MOVLQZX -4(SI), DX
+ JMP doCopy
+
+tagCopy2:
+ // case tagCopy2:
+ // s += 3
+ ADDQ $3, SI
+
+ // if uint(s) > uint(len(src)) { etc }
+ MOVQ SI, BX
+ SUBQ R11, BX
+ CMPQ BX, R12
+ JA errCorrupt
+
+ // length = 1 + int(src[s-3])>>2
+ SHRQ $2, CX
+ INCQ CX
+
+ // offset = int(uint32(src[s-2]) | uint32(src[s-1])<<8)
+ MOVWQZX -2(SI), DX
+ JMP doCopy
+
+tagCopy:
+ // We have a copy tag. We assume that:
+ // - BX == src[s] & 0x03
+ // - CX == src[s]
+ CMPQ BX, $2
+ JEQ tagCopy2
+ JA tagCopy4
+
+ // case tagCopy1:
+ // s += 2
+ ADDQ $2, SI
+
+ // if uint(s) > uint(len(src)) { etc }
+ MOVQ SI, BX
+ SUBQ R11, BX
+ CMPQ BX, R12
+ JA errCorrupt
+
+ // offset = int(uint32(src[s-2])&0xe0<<3 | uint32(src[s-1]))
+ MOVQ CX, DX
+ ANDQ $0xe0, DX
+ SHLQ $3, DX
+ MOVBQZX -1(SI), BX
+ ORQ BX, DX
+
+ // length = 4 + int(src[s-2])>>2&0x7
+ SHRQ $2, CX
+ ANDQ $7, CX
+ ADDQ $4, CX
+
+doCopy:
+ // This is the end of the outer "switch", when we have a copy tag.
+ //
+ // We assume that:
+ // - CX == length && CX > 0
+ // - DX == offset
+
+ // if offset <= 0 { etc }
+ CMPQ DX, $0
+ JLE errCorrupt
+
+ // if d < offset { etc }
+ MOVQ DI, BX
+ SUBQ R8, BX
+ CMPQ BX, DX
+ JLT errCorrupt
+
+ // if length > len(dst)-d { etc }
+ MOVQ R10, BX
+ SUBQ DI, BX
+ CMPQ CX, BX
+ JGT errCorrupt
+
+ // forwardCopy(dst[d:d+length], dst[d-offset:]); d += length
+ //
+ // Set:
+ // - R14 = len(dst)-d
+ // - R15 = &dst[d-offset]
+ MOVQ R10, R14
+ SUBQ DI, R14
+ MOVQ DI, R15
+ SUBQ DX, R15
+
+ // !!! Try a faster technique for short (16 or fewer bytes) forward copies.
+ //
+ // First, try using two 8-byte load/stores, similar to the doLit technique
+ // above. Even if dst[d:d+length] and dst[d-offset:] can overlap, this is
+ // still OK if offset >= 8. Note that this has to be two 8-byte load/stores
+ // and not one 16-byte load/store, and the first store has to be before the
+ // second load, due to the overlap if offset is in the range [8, 16).
+ //
+ // if length > 16 || offset < 8 || len(dst)-d < 16 {
+ // goto slowForwardCopy
+ // }
+ // copy 16 bytes
+ // d += length
+ CMPQ CX, $16
+ JGT slowForwardCopy
+ CMPQ DX, $8
+ JLT slowForwardCopy
+ CMPQ R14, $16
+ JLT slowForwardCopy
+ MOVQ 0(R15), AX
+ MOVQ AX, 0(DI)
+ MOVQ 8(R15), BX
+ MOVQ BX, 8(DI)
+ ADDQ CX, DI
+ JMP loop
+
+slowForwardCopy:
+ // !!! If the forward copy is longer than 16 bytes, or if offset < 8, we
+ // can still try 8-byte load stores, provided we can overrun up to 10 extra
+ // bytes. As above, the overrun will be fixed up by subsequent iterations
+ // of the outermost loop.
+ //
+ // The C++ snappy code calls this technique IncrementalCopyFastPath. Its
+ // commentary says:
+ //
+ // ----
+ //
+ // The main part of this loop is a simple copy of eight bytes at a time
+ // until we've copied (at least) the requested amount of bytes. However,
+ // if d and d-offset are less than eight bytes apart (indicating a
+ // repeating pattern of length < 8), we first need to expand the pattern in
+ // order to get the correct results. For instance, if the buffer looks like
+ // this, with the eight-byte and patterns marked as
+ // intervals:
+ //
+ // abxxxxxxxxxxxx
+ // [------] d-offset
+ // [------] d
+ //
+ // a single eight-byte copy from to will repeat the pattern
+ // once, after which we can move two bytes without moving :
+ //
+ // ababxxxxxxxxxx
+ // [------] d-offset
+ // [------] d
+ //
+ // and repeat the exercise until the two no longer overlap.
+ //
+ // This allows us to do very well in the special case of one single byte
+ // repeated many times, without taking a big hit for more general cases.
+ //
+ // The worst case of extra writing past the end of the match occurs when
+ // offset == 1 and length == 1; the last copy will read from byte positions
+ // [0..7] and write to [4..11], whereas it was only supposed to write to
+ // position 1. Thus, ten excess bytes.
+ //
+ // ----
+ //
+ // That "10 byte overrun" worst case is confirmed by Go's
+ // TestSlowForwardCopyOverrun, which also tests the fixUpSlowForwardCopy
+ // and finishSlowForwardCopy algorithm.
+ //
+ // if length > len(dst)-d-10 {
+ // goto verySlowForwardCopy
+ // }
+ SUBQ $10, R14
+ CMPQ CX, R14
+ JGT verySlowForwardCopy
+
+makeOffsetAtLeast8:
+ // !!! As above, expand the pattern so that offset >= 8 and we can use
+ // 8-byte load/stores.
+ //
+ // for offset < 8 {
+ // copy 8 bytes from dst[d-offset:] to dst[d:]
+ // length -= offset
+ // d += offset
+ // offset += offset
+ // // The two previous lines together means that d-offset, and therefore
+ // // R15, is unchanged.
+ // }
+ CMPQ DX, $8
+ JGE fixUpSlowForwardCopy
+ MOVQ (R15), BX
+ MOVQ BX, (DI)
+ SUBQ DX, CX
+ ADDQ DX, DI
+ ADDQ DX, DX
+ JMP makeOffsetAtLeast8
+
+fixUpSlowForwardCopy:
+ // !!! Add length (which might be negative now) to d (implied by DI being
+ // &dst[d]) so that d ends up at the right place when we jump back to the
+ // top of the loop. Before we do that, though, we save DI to AX so that, if
+ // length is positive, copying the remaining length bytes will write to the
+ // right place.
+ MOVQ DI, AX
+ ADDQ CX, DI
+
+finishSlowForwardCopy:
+ // !!! Repeat 8-byte load/stores until length <= 0. Ending with a negative
+ // length means that we overrun, but as above, that will be fixed up by
+ // subsequent iterations of the outermost loop.
+ CMPQ CX, $0
+ JLE loop
+ MOVQ (R15), BX
+ MOVQ BX, (AX)
+ ADDQ $8, R15
+ ADDQ $8, AX
+ SUBQ $8, CX
+ JMP finishSlowForwardCopy
+
+verySlowForwardCopy:
+ // verySlowForwardCopy is a simple implementation of forward copy. In C
+ // parlance, this is a do/while loop instead of a while loop, since we know
+ // that length > 0. In Go syntax:
+ //
+ // for {
+ // dst[d] = dst[d - offset]
+ // d++
+ // length--
+ // if length == 0 {
+ // break
+ // }
+ // }
+ MOVB (R15), BX
+ MOVB BX, (DI)
+ INCQ R15
+ INCQ DI
+ DECQ CX
+ JNZ verySlowForwardCopy
+ JMP loop
+
+// The code above handles copy tags.
+// ----------------------------------------
+
+end:
+ // This is the end of the "for s < len(src)".
+ //
+ // if d != len(dst) { etc }
+ CMPQ DI, R10
+ JNE errCorrupt
+
+ // return 0
+ MOVQ $0, ret+48(FP)
+ RET
+
+errCorrupt:
+ // return decodeErrCodeCorrupt
+ MOVQ $1, ret+48(FP)
+ RET
diff --git a/vendor/github.com/golang/snappy/decode_other.go b/vendor/github.com/golang/snappy/decode_other.go
new file mode 100644
index 0000000..8c9f204
--- /dev/null
+++ b/vendor/github.com/golang/snappy/decode_other.go
@@ -0,0 +1,101 @@
+// Copyright 2016 The Snappy-Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !amd64 appengine !gc noasm
+
+package snappy
+
+// decode writes the decoding of src to dst. It assumes that the varint-encoded
+// length of the decompressed bytes has already been read, and that len(dst)
+// equals that length.
+//
+// It returns 0 on success or a decodeErrCodeXxx error code on failure.
+func decode(dst, src []byte) int {
+ var d, s, offset, length int
+ for s < len(src) {
+ switch src[s] & 0x03 {
+ case tagLiteral:
+ x := uint32(src[s] >> 2)
+ switch {
+ case x < 60:
+ s++
+ case x == 60:
+ s += 2
+ if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
+ return decodeErrCodeCorrupt
+ }
+ x = uint32(src[s-1])
+ case x == 61:
+ s += 3
+ if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
+ return decodeErrCodeCorrupt
+ }
+ x = uint32(src[s-2]) | uint32(src[s-1])<<8
+ case x == 62:
+ s += 4
+ if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
+ return decodeErrCodeCorrupt
+ }
+ x = uint32(src[s-3]) | uint32(src[s-2])<<8 | uint32(src[s-1])<<16
+ case x == 63:
+ s += 5
+ if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
+ return decodeErrCodeCorrupt
+ }
+ x = uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24
+ }
+ length = int(x) + 1
+ if length <= 0 {
+ return decodeErrCodeUnsupportedLiteralLength
+ }
+ if length > len(dst)-d || length > len(src)-s {
+ return decodeErrCodeCorrupt
+ }
+ copy(dst[d:], src[s:s+length])
+ d += length
+ s += length
+ continue
+
+ case tagCopy1:
+ s += 2
+ if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
+ return decodeErrCodeCorrupt
+ }
+ length = 4 + int(src[s-2])>>2&0x7
+ offset = int(uint32(src[s-2])&0xe0<<3 | uint32(src[s-1]))
+
+ case tagCopy2:
+ s += 3
+ if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
+ return decodeErrCodeCorrupt
+ }
+ length = 1 + int(src[s-3])>>2
+ offset = int(uint32(src[s-2]) | uint32(src[s-1])<<8)
+
+ case tagCopy4:
+ s += 5
+ if uint(s) > uint(len(src)) { // The uint conversions catch overflow from the previous line.
+ return decodeErrCodeCorrupt
+ }
+ length = 1 + int(src[s-5])>>2
+ offset = int(uint32(src[s-4]) | uint32(src[s-3])<<8 | uint32(src[s-2])<<16 | uint32(src[s-1])<<24)
+ }
+
+ if offset <= 0 || d < offset || length > len(dst)-d {
+ return decodeErrCodeCorrupt
+ }
+ // Copy from an earlier sub-slice of dst to a later sub-slice. Unlike
+ // the built-in copy function, this byte-by-byte copy always runs
+ // forwards, even if the slices overlap. Conceptually, this is:
+ //
+ // d += forwardCopy(dst[d:d+length], dst[d-offset:])
+ for end := d + length; d != end; d++ {
+ dst[d] = dst[d-offset]
+ }
+ }
+ if d != len(dst) {
+ return decodeErrCodeCorrupt
+ }
+ return 0
+}
diff --git a/vendor/github.com/golang/snappy/encode.go b/vendor/github.com/golang/snappy/encode.go
new file mode 100644
index 0000000..8d393e9
--- /dev/null
+++ b/vendor/github.com/golang/snappy/encode.go
@@ -0,0 +1,285 @@
+// Copyright 2011 The Snappy-Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package snappy
+
+import (
+ "encoding/binary"
+ "errors"
+ "io"
+)
+
+// Encode returns the encoded form of src. The returned slice may be a sub-
+// slice of dst if dst was large enough to hold the entire encoded block.
+// Otherwise, a newly allocated slice will be returned.
+//
+// The dst and src must not overlap. It is valid to pass a nil dst.
+func Encode(dst, src []byte) []byte {
+ if n := MaxEncodedLen(len(src)); n < 0 {
+ panic(ErrTooLarge)
+ } else if len(dst) < n {
+ dst = make([]byte, n)
+ }
+
+ // The block starts with the varint-encoded length of the decompressed bytes.
+ d := binary.PutUvarint(dst, uint64(len(src)))
+
+ for len(src) > 0 {
+ p := src
+ src = nil
+ if len(p) > maxBlockSize {
+ p, src = p[:maxBlockSize], p[maxBlockSize:]
+ }
+ if len(p) < minNonLiteralBlockSize {
+ d += emitLiteral(dst[d:], p)
+ } else {
+ d += encodeBlock(dst[d:], p)
+ }
+ }
+ return dst[:d]
+}
+
+// inputMargin is the minimum number of extra input bytes to keep, inside
+// encodeBlock's inner loop. On some architectures, this margin lets us
+// implement a fast path for emitLiteral, where the copy of short (<= 16 byte)
+// literals can be implemented as a single load to and store from a 16-byte
+// register. That literal's actual length can be as short as 1 byte, so this
+// can copy up to 15 bytes too much, but that's OK as subsequent iterations of
+// the encoding loop will fix up the copy overrun, and this inputMargin ensures
+// that we don't overrun the dst and src buffers.
+const inputMargin = 16 - 1
+
+// minNonLiteralBlockSize is the minimum size of the input to encodeBlock that
+// could be encoded with a copy tag. This is the minimum with respect to the
+// algorithm used by encodeBlock, not a minimum enforced by the file format.
+//
+// The encoded output must start with at least a 1 byte literal, as there are
+// no previous bytes to copy. A minimal (1 byte) copy after that, generated
+// from an emitCopy call in encodeBlock's main loop, would require at least
+// another inputMargin bytes, for the reason above: we want any emitLiteral
+// calls inside encodeBlock's main loop to use the fast path if possible, which
+// requires being able to overrun by inputMargin bytes. Thus,
+// minNonLiteralBlockSize equals 1 + 1 + inputMargin.
+//
+// The C++ code doesn't use this exact threshold, but it could, as discussed at
+// https://groups.google.com/d/topic/snappy-compression/oGbhsdIJSJ8/discussion
+// The difference between Go (2+inputMargin) and C++ (inputMargin) is purely an
+// optimization. It should not affect the encoded form. This is tested by
+// TestSameEncodingAsCppShortCopies.
+const minNonLiteralBlockSize = 1 + 1 + inputMargin
+
+// MaxEncodedLen returns the maximum length of a snappy block, given its
+// uncompressed length.
+//
+// It will return a negative value if srcLen is too large to encode.
+func MaxEncodedLen(srcLen int) int {
+ n := uint64(srcLen)
+ if n > 0xffffffff {
+ return -1
+ }
+ // Compressed data can be defined as:
+ // compressed := item* literal*
+ // item := literal* copy
+ //
+ // The trailing literal sequence has a space blowup of at most 62/60
+ // since a literal of length 60 needs one tag byte + one extra byte
+ // for length information.
+ //
+ // Item blowup is trickier to measure. Suppose the "copy" op copies
+ // 4 bytes of data. Because of a special check in the encoding code,
+ // we produce a 4-byte copy only if the offset is < 65536. Therefore
+ // the copy op takes 3 bytes to encode, and this type of item leads
+ // to at most the 62/60 blowup for representing literals.
+ //
+ // Suppose the "copy" op copies 5 bytes of data. If the offset is big
+ // enough, it will take 5 bytes to encode the copy op. Therefore the
+ // worst case here is a one-byte literal followed by a five-byte copy.
+ // That is, 6 bytes of input turn into 7 bytes of "compressed" data.
+ //
+ // This last factor dominates the blowup, so the final estimate is:
+ n = 32 + n + n/6
+ if n > 0xffffffff {
+ return -1
+ }
+ return int(n)
+}
+
+var errClosed = errors.New("snappy: Writer is closed")
+
+// NewWriter returns a new Writer that compresses to w.
+//
+// The Writer returned does not buffer writes. There is no need to Flush or
+// Close such a Writer.
+//
+// Deprecated: the Writer returned is not suitable for many small writes, only
+// for few large writes. Use NewBufferedWriter instead, which is efficient
+// regardless of the frequency and shape of the writes, and remember to Close
+// that Writer when done.
+func NewWriter(w io.Writer) *Writer {
+ return &Writer{
+ w: w,
+ obuf: make([]byte, obufLen),
+ }
+}
+
+// NewBufferedWriter returns a new Writer that compresses to w, using the
+// framing format described at
+// https://github.com/google/snappy/blob/master/framing_format.txt
+//
+// The Writer returned buffers writes. Users must call Close to guarantee all
+// data has been forwarded to the underlying io.Writer. They may also call
+// Flush zero or more times before calling Close.
+func NewBufferedWriter(w io.Writer) *Writer {
+ return &Writer{
+ w: w,
+ ibuf: make([]byte, 0, maxBlockSize),
+ obuf: make([]byte, obufLen),
+ }
+}
+
+// Writer is an io.Writer that can write Snappy-compressed bytes.
+type Writer struct {
+ w io.Writer
+ err error
+
+ // ibuf is a buffer for the incoming (uncompressed) bytes.
+ //
+ // Its use is optional. For backwards compatibility, Writers created by the
+ // NewWriter function have ibuf == nil, do not buffer incoming bytes, and
+ // therefore do not need to be Flush'ed or Close'd.
+ ibuf []byte
+
+ // obuf is a buffer for the outgoing (compressed) bytes.
+ obuf []byte
+
+ // wroteStreamHeader is whether we have written the stream header.
+ wroteStreamHeader bool
+}
+
+// Reset discards the writer's state and switches the Snappy writer to write to
+// w. This permits reusing a Writer rather than allocating a new one.
+func (w *Writer) Reset(writer io.Writer) {
+ w.w = writer
+ w.err = nil
+ if w.ibuf != nil {
+ w.ibuf = w.ibuf[:0]
+ }
+ w.wroteStreamHeader = false
+}
+
+// Write satisfies the io.Writer interface.
+func (w *Writer) Write(p []byte) (nRet int, errRet error) {
+ if w.ibuf == nil {
+ // Do not buffer incoming bytes. This does not perform or compress well
+ // if the caller of Writer.Write writes many small slices. This
+ // behavior is therefore deprecated, but still supported for backwards
+ // compatibility with code that doesn't explicitly Flush or Close.
+ return w.write(p)
+ }
+
+ // The remainder of this method is based on bufio.Writer.Write from the
+ // standard library.
+
+ for len(p) > (cap(w.ibuf)-len(w.ibuf)) && w.err == nil {
+ var n int
+ if len(w.ibuf) == 0 {
+ // Large write, empty buffer.
+ // Write directly from p to avoid copy.
+ n, _ = w.write(p)
+ } else {
+ n = copy(w.ibuf[len(w.ibuf):cap(w.ibuf)], p)
+ w.ibuf = w.ibuf[:len(w.ibuf)+n]
+ w.Flush()
+ }
+ nRet += n
+ p = p[n:]
+ }
+ if w.err != nil {
+ return nRet, w.err
+ }
+ n := copy(w.ibuf[len(w.ibuf):cap(w.ibuf)], p)
+ w.ibuf = w.ibuf[:len(w.ibuf)+n]
+ nRet += n
+ return nRet, nil
+}
+
+func (w *Writer) write(p []byte) (nRet int, errRet error) {
+ if w.err != nil {
+ return 0, w.err
+ }
+ for len(p) > 0 {
+ obufStart := len(magicChunk)
+ if !w.wroteStreamHeader {
+ w.wroteStreamHeader = true
+ copy(w.obuf, magicChunk)
+ obufStart = 0
+ }
+
+ var uncompressed []byte
+ if len(p) > maxBlockSize {
+ uncompressed, p = p[:maxBlockSize], p[maxBlockSize:]
+ } else {
+ uncompressed, p = p, nil
+ }
+ checksum := crc(uncompressed)
+
+ // Compress the buffer, discarding the result if the improvement
+ // isn't at least 12.5%.
+ compressed := Encode(w.obuf[obufHeaderLen:], uncompressed)
+ chunkType := uint8(chunkTypeCompressedData)
+ chunkLen := 4 + len(compressed)
+ obufEnd := obufHeaderLen + len(compressed)
+ if len(compressed) >= len(uncompressed)-len(uncompressed)/8 {
+ chunkType = chunkTypeUncompressedData
+ chunkLen = 4 + len(uncompressed)
+ obufEnd = obufHeaderLen
+ }
+
+ // Fill in the per-chunk header that comes before the body.
+ w.obuf[len(magicChunk)+0] = chunkType
+ w.obuf[len(magicChunk)+1] = uint8(chunkLen >> 0)
+ w.obuf[len(magicChunk)+2] = uint8(chunkLen >> 8)
+ w.obuf[len(magicChunk)+3] = uint8(chunkLen >> 16)
+ w.obuf[len(magicChunk)+4] = uint8(checksum >> 0)
+ w.obuf[len(magicChunk)+5] = uint8(checksum >> 8)
+ w.obuf[len(magicChunk)+6] = uint8(checksum >> 16)
+ w.obuf[len(magicChunk)+7] = uint8(checksum >> 24)
+
+ if _, err := w.w.Write(w.obuf[obufStart:obufEnd]); err != nil {
+ w.err = err
+ return nRet, err
+ }
+ if chunkType == chunkTypeUncompressedData {
+ if _, err := w.w.Write(uncompressed); err != nil {
+ w.err = err
+ return nRet, err
+ }
+ }
+ nRet += len(uncompressed)
+ }
+ return nRet, nil
+}
+
+// Flush flushes the Writer to its underlying io.Writer.
+func (w *Writer) Flush() error {
+ if w.err != nil {
+ return w.err
+ }
+ if len(w.ibuf) == 0 {
+ return nil
+ }
+ w.write(w.ibuf)
+ w.ibuf = w.ibuf[:0]
+ return w.err
+}
+
+// Close calls Flush and then closes the Writer.
+func (w *Writer) Close() error {
+ w.Flush()
+ ret := w.err
+ if w.err == nil {
+ w.err = errClosed
+ }
+ return ret
+}
diff --git a/vendor/github.com/golang/snappy/encode_amd64.go b/vendor/github.com/golang/snappy/encode_amd64.go
new file mode 100644
index 0000000..150d91b
--- /dev/null
+++ b/vendor/github.com/golang/snappy/encode_amd64.go
@@ -0,0 +1,29 @@
+// Copyright 2016 The Snappy-Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !appengine
+// +build gc
+// +build !noasm
+
+package snappy
+
+// emitLiteral has the same semantics as in encode_other.go.
+//
+//go:noescape
+func emitLiteral(dst, lit []byte) int
+
+// emitCopy has the same semantics as in encode_other.go.
+//
+//go:noescape
+func emitCopy(dst []byte, offset, length int) int
+
+// extendMatch has the same semantics as in encode_other.go.
+//
+//go:noescape
+func extendMatch(src []byte, i, j int) int
+
+// encodeBlock has the same semantics as in encode_other.go.
+//
+//go:noescape
+func encodeBlock(dst, src []byte) (d int)
diff --git a/vendor/github.com/golang/snappy/encode_amd64.s b/vendor/github.com/golang/snappy/encode_amd64.s
new file mode 100644
index 0000000..adfd979
--- /dev/null
+++ b/vendor/github.com/golang/snappy/encode_amd64.s
@@ -0,0 +1,730 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !appengine
+// +build gc
+// +build !noasm
+
+#include "textflag.h"
+
+// The XXX lines assemble on Go 1.4, 1.5 and 1.7, but not 1.6, due to a
+// Go toolchain regression. See https://github.com/golang/go/issues/15426 and
+// https://github.com/golang/snappy/issues/29
+//
+// As a workaround, the package was built with a known good assembler, and
+// those instructions were disassembled by "objdump -d" to yield the
+// 4e 0f b7 7c 5c 78 movzwq 0x78(%rsp,%r11,2),%r15
+// style comments, in AT&T asm syntax. Note that rsp here is a physical
+// register, not Go/asm's SP pseudo-register (see https://golang.org/doc/asm).
+// The instructions were then encoded as "BYTE $0x.." sequences, which assemble
+// fine on Go 1.6.
+
+// The asm code generally follows the pure Go code in encode_other.go, except
+// where marked with a "!!!".
+
+// ----------------------------------------------------------------------------
+
+// func emitLiteral(dst, lit []byte) int
+//
+// All local variables fit into registers. The register allocation:
+// - AX len(lit)
+// - BX n
+// - DX return value
+// - DI &dst[i]
+// - R10 &lit[0]
+//
+// The 24 bytes of stack space is to call runtime·memmove.
+//
+// The unusual register allocation of local variables, such as R10 for the
+// source pointer, matches the allocation used at the call site in encodeBlock,
+// which makes it easier to manually inline this function.
+TEXT ·emitLiteral(SB), NOSPLIT, $24-56
+ MOVQ dst_base+0(FP), DI
+ MOVQ lit_base+24(FP), R10
+ MOVQ lit_len+32(FP), AX
+ MOVQ AX, DX
+ MOVL AX, BX
+ SUBL $1, BX
+
+ CMPL BX, $60
+ JLT oneByte
+ CMPL BX, $256
+ JLT twoBytes
+
+threeBytes:
+ MOVB $0xf4, 0(DI)
+ MOVW BX, 1(DI)
+ ADDQ $3, DI
+ ADDQ $3, DX
+ JMP memmove
+
+twoBytes:
+ MOVB $0xf0, 0(DI)
+ MOVB BX, 1(DI)
+ ADDQ $2, DI
+ ADDQ $2, DX
+ JMP memmove
+
+oneByte:
+ SHLB $2, BX
+ MOVB BX, 0(DI)
+ ADDQ $1, DI
+ ADDQ $1, DX
+
+memmove:
+ MOVQ DX, ret+48(FP)
+
+ // copy(dst[i:], lit)
+ //
+ // This means calling runtime·memmove(&dst[i], &lit[0], len(lit)), so we push
+ // DI, R10 and AX as arguments.
+ MOVQ DI, 0(SP)
+ MOVQ R10, 8(SP)
+ MOVQ AX, 16(SP)
+ CALL runtime·memmove(SB)
+ RET
+
+// ----------------------------------------------------------------------------
+
+// func emitCopy(dst []byte, offset, length int) int
+//
+// All local variables fit into registers. The register allocation:
+// - AX length
+// - SI &dst[0]
+// - DI &dst[i]
+// - R11 offset
+//
+// The unusual register allocation of local variables, such as R11 for the
+// offset, matches the allocation used at the call site in encodeBlock, which
+// makes it easier to manually inline this function.
+TEXT ·emitCopy(SB), NOSPLIT, $0-48
+ MOVQ dst_base+0(FP), DI
+ MOVQ DI, SI
+ MOVQ offset+24(FP), R11
+ MOVQ length+32(FP), AX
+
+loop0:
+ // for length >= 68 { etc }
+ CMPL AX, $68
+ JLT step1
+
+ // Emit a length 64 copy, encoded as 3 bytes.
+ MOVB $0xfe, 0(DI)
+ MOVW R11, 1(DI)
+ ADDQ $3, DI
+ SUBL $64, AX
+ JMP loop0
+
+step1:
+ // if length > 64 { etc }
+ CMPL AX, $64
+ JLE step2
+
+ // Emit a length 60 copy, encoded as 3 bytes.
+ MOVB $0xee, 0(DI)
+ MOVW R11, 1(DI)
+ ADDQ $3, DI
+ SUBL $60, AX
+
+step2:
+ // if length >= 12 || offset >= 2048 { goto step3 }
+ CMPL AX, $12
+ JGE step3
+ CMPL R11, $2048
+ JGE step3
+
+ // Emit the remaining copy, encoded as 2 bytes.
+ MOVB R11, 1(DI)
+ SHRL $8, R11
+ SHLB $5, R11
+ SUBB $4, AX
+ SHLB $2, AX
+ ORB AX, R11
+ ORB $1, R11
+ MOVB R11, 0(DI)
+ ADDQ $2, DI
+
+ // Return the number of bytes written.
+ SUBQ SI, DI
+ MOVQ DI, ret+40(FP)
+ RET
+
+step3:
+ // Emit the remaining copy, encoded as 3 bytes.
+ SUBL $1, AX
+ SHLB $2, AX
+ ORB $2, AX
+ MOVB AX, 0(DI)
+ MOVW R11, 1(DI)
+ ADDQ $3, DI
+
+ // Return the number of bytes written.
+ SUBQ SI, DI
+ MOVQ DI, ret+40(FP)
+ RET
+
+// ----------------------------------------------------------------------------
+
+// func extendMatch(src []byte, i, j int) int
+//
+// All local variables fit into registers. The register allocation:
+// - DX &src[0]
+// - SI &src[j]
+// - R13 &src[len(src) - 8]
+// - R14 &src[len(src)]
+// - R15 &src[i]
+//
+// The unusual register allocation of local variables, such as R15 for a source
+// pointer, matches the allocation used at the call site in encodeBlock, which
+// makes it easier to manually inline this function.
+TEXT ·extendMatch(SB), NOSPLIT, $0-48
+ MOVQ src_base+0(FP), DX
+ MOVQ src_len+8(FP), R14
+ MOVQ i+24(FP), R15
+ MOVQ j+32(FP), SI
+ ADDQ DX, R14
+ ADDQ DX, R15
+ ADDQ DX, SI
+ MOVQ R14, R13
+ SUBQ $8, R13
+
+cmp8:
+ // As long as we are 8 or more bytes before the end of src, we can load and
+ // compare 8 bytes at a time. If those 8 bytes are equal, repeat.
+ CMPQ SI, R13
+ JA cmp1
+ MOVQ (R15), AX
+ MOVQ (SI), BX
+ CMPQ AX, BX
+ JNE bsf
+ ADDQ $8, R15
+ ADDQ $8, SI
+ JMP cmp8
+
+bsf:
+ // If those 8 bytes were not equal, XOR the two 8 byte values, and return
+ // the index of the first byte that differs. The BSF instruction finds the
+ // least significant 1 bit, the amd64 architecture is little-endian, and
+ // the shift by 3 converts a bit index to a byte index.
+ XORQ AX, BX
+ BSFQ BX, BX
+ SHRQ $3, BX
+ ADDQ BX, SI
+
+ // Convert from &src[ret] to ret.
+ SUBQ DX, SI
+ MOVQ SI, ret+40(FP)
+ RET
+
+cmp1:
+ // In src's tail, compare 1 byte at a time.
+ CMPQ SI, R14
+ JAE extendMatchEnd
+ MOVB (R15), AX
+ MOVB (SI), BX
+ CMPB AX, BX
+ JNE extendMatchEnd
+ ADDQ $1, R15
+ ADDQ $1, SI
+ JMP cmp1
+
+extendMatchEnd:
+ // Convert from &src[ret] to ret.
+ SUBQ DX, SI
+ MOVQ SI, ret+40(FP)
+ RET
+
+// ----------------------------------------------------------------------------
+
+// func encodeBlock(dst, src []byte) (d int)
+//
+// All local variables fit into registers, other than "var table". The register
+// allocation:
+// - AX . .
+// - BX . .
+// - CX 56 shift (note that amd64 shifts by non-immediates must use CX).
+// - DX 64 &src[0], tableSize
+// - SI 72 &src[s]
+// - DI 80 &dst[d]
+// - R9 88 sLimit
+// - R10 . &src[nextEmit]
+// - R11 96 prevHash, currHash, nextHash, offset
+// - R12 104 &src[base], skip
+// - R13 . &src[nextS], &src[len(src) - 8]
+// - R14 . len(src), bytesBetweenHashLookups, &src[len(src)], x
+// - R15 112 candidate
+//
+// The second column (56, 64, etc) is the stack offset to spill the registers
+// when calling other functions. We could pack this slightly tighter, but it's
+// simpler to have a dedicated spill map independent of the function called.
+//
+// "var table [maxTableSize]uint16" takes up 32768 bytes of stack space. An
+// extra 56 bytes, to call other functions, and an extra 64 bytes, to spill
+// local variables (registers) during calls gives 32768 + 56 + 64 = 32888.
+TEXT ·encodeBlock(SB), 0, $32888-56
+ MOVQ dst_base+0(FP), DI
+ MOVQ src_base+24(FP), SI
+ MOVQ src_len+32(FP), R14
+
+ // shift, tableSize := uint32(32-8), 1<<8
+ MOVQ $24, CX
+ MOVQ $256, DX
+
+calcShift:
+ // for ; tableSize < maxTableSize && tableSize < len(src); tableSize *= 2 {
+ // shift--
+ // }
+ CMPQ DX, $16384
+ JGE varTable
+ CMPQ DX, R14
+ JGE varTable
+ SUBQ $1, CX
+ SHLQ $1, DX
+ JMP calcShift
+
+varTable:
+ // var table [maxTableSize]uint16
+ //
+ // In the asm code, unlike the Go code, we can zero-initialize only the
+ // first tableSize elements. Each uint16 element is 2 bytes and each MOVOU
+ // writes 16 bytes, so we can do only tableSize/8 writes instead of the
+ // 2048 writes that would zero-initialize all of table's 32768 bytes.
+ SHRQ $3, DX
+ LEAQ table-32768(SP), BX
+ PXOR X0, X0
+
+memclr:
+ MOVOU X0, 0(BX)
+ ADDQ $16, BX
+ SUBQ $1, DX
+ JNZ memclr
+
+ // !!! DX = &src[0]
+ MOVQ SI, DX
+
+ // sLimit := len(src) - inputMargin
+ MOVQ R14, R9
+ SUBQ $15, R9
+
+ // !!! Pre-emptively spill CX, DX and R9 to the stack. Their values don't
+ // change for the rest of the function.
+ MOVQ CX, 56(SP)
+ MOVQ DX, 64(SP)
+ MOVQ R9, 88(SP)
+
+ // nextEmit := 0
+ MOVQ DX, R10
+
+ // s := 1
+ ADDQ $1, SI
+
+ // nextHash := hash(load32(src, s), shift)
+ MOVL 0(SI), R11
+ IMULL $0x1e35a7bd, R11
+ SHRL CX, R11
+
+outer:
+ // for { etc }
+
+ // skip := 32
+ MOVQ $32, R12
+
+ // nextS := s
+ MOVQ SI, R13
+
+ // candidate := 0
+ MOVQ $0, R15
+
+inner0:
+ // for { etc }
+
+ // s := nextS
+ MOVQ R13, SI
+
+ // bytesBetweenHashLookups := skip >> 5
+ MOVQ R12, R14
+ SHRQ $5, R14
+
+ // nextS = s + bytesBetweenHashLookups
+ ADDQ R14, R13
+
+ // skip += bytesBetweenHashLookups
+ ADDQ R14, R12
+
+ // if nextS > sLimit { goto emitRemainder }
+ MOVQ R13, AX
+ SUBQ DX, AX
+ CMPQ AX, R9
+ JA emitRemainder
+
+ // candidate = int(table[nextHash])
+ // XXX: MOVWQZX table-32768(SP)(R11*2), R15
+ // XXX: 4e 0f b7 7c 5c 78 movzwq 0x78(%rsp,%r11,2),%r15
+ BYTE $0x4e
+ BYTE $0x0f
+ BYTE $0xb7
+ BYTE $0x7c
+ BYTE $0x5c
+ BYTE $0x78
+
+ // table[nextHash] = uint16(s)
+ MOVQ SI, AX
+ SUBQ DX, AX
+
+ // XXX: MOVW AX, table-32768(SP)(R11*2)
+ // XXX: 66 42 89 44 5c 78 mov %ax,0x78(%rsp,%r11,2)
+ BYTE $0x66
+ BYTE $0x42
+ BYTE $0x89
+ BYTE $0x44
+ BYTE $0x5c
+ BYTE $0x78
+
+ // nextHash = hash(load32(src, nextS), shift)
+ MOVL 0(R13), R11
+ IMULL $0x1e35a7bd, R11
+ SHRL CX, R11
+
+ // if load32(src, s) != load32(src, candidate) { continue } break
+ MOVL 0(SI), AX
+ MOVL (DX)(R15*1), BX
+ CMPL AX, BX
+ JNE inner0
+
+fourByteMatch:
+ // As per the encode_other.go code:
+ //
+ // A 4-byte match has been found. We'll later see etc.
+
+ // !!! Jump to a fast path for short (<= 16 byte) literals. See the comment
+ // on inputMargin in encode.go.
+ MOVQ SI, AX
+ SUBQ R10, AX
+ CMPQ AX, $16
+ JLE emitLiteralFastPath
+
+ // ----------------------------------------
+ // Begin inline of the emitLiteral call.
+ //
+ // d += emitLiteral(dst[d:], src[nextEmit:s])
+
+ MOVL AX, BX
+ SUBL $1, BX
+
+ CMPL BX, $60
+ JLT inlineEmitLiteralOneByte
+ CMPL BX, $256
+ JLT inlineEmitLiteralTwoBytes
+
+inlineEmitLiteralThreeBytes:
+ MOVB $0xf4, 0(DI)
+ MOVW BX, 1(DI)
+ ADDQ $3, DI
+ JMP inlineEmitLiteralMemmove
+
+inlineEmitLiteralTwoBytes:
+ MOVB $0xf0, 0(DI)
+ MOVB BX, 1(DI)
+ ADDQ $2, DI
+ JMP inlineEmitLiteralMemmove
+
+inlineEmitLiteralOneByte:
+ SHLB $2, BX
+ MOVB BX, 0(DI)
+ ADDQ $1, DI
+
+inlineEmitLiteralMemmove:
+ // Spill local variables (registers) onto the stack; call; unspill.
+ //
+ // copy(dst[i:], lit)
+ //
+ // This means calling runtime·memmove(&dst[i], &lit[0], len(lit)), so we push
+ // DI, R10 and AX as arguments.
+ MOVQ DI, 0(SP)
+ MOVQ R10, 8(SP)
+ MOVQ AX, 16(SP)
+ ADDQ AX, DI // Finish the "d +=" part of "d += emitLiteral(etc)".
+ MOVQ SI, 72(SP)
+ MOVQ DI, 80(SP)
+ MOVQ R15, 112(SP)
+ CALL runtime·memmove(SB)
+ MOVQ 56(SP), CX
+ MOVQ 64(SP), DX
+ MOVQ 72(SP), SI
+ MOVQ 80(SP), DI
+ MOVQ 88(SP), R9
+ MOVQ 112(SP), R15
+ JMP inner1
+
+inlineEmitLiteralEnd:
+ // End inline of the emitLiteral call.
+ // ----------------------------------------
+
+emitLiteralFastPath:
+ // !!! Emit the 1-byte encoding "uint8(len(lit)-1)<<2".
+ MOVB AX, BX
+ SUBB $1, BX
+ SHLB $2, BX
+ MOVB BX, (DI)
+ ADDQ $1, DI
+
+ // !!! Implement the copy from lit to dst as a 16-byte load and store.
+ // (Encode's documentation says that dst and src must not overlap.)
+ //
+ // This always copies 16 bytes, instead of only len(lit) bytes, but that's
+ // OK. Subsequent iterations will fix up the overrun.
+ //
+ // Note that on amd64, it is legal and cheap to issue unaligned 8-byte or
+ // 16-byte loads and stores. This technique probably wouldn't be as
+ // effective on architectures that are fussier about alignment.
+ MOVOU 0(R10), X0
+ MOVOU X0, 0(DI)
+ ADDQ AX, DI
+
+inner1:
+ // for { etc }
+
+ // base := s
+ MOVQ SI, R12
+
+ // !!! offset := base - candidate
+ MOVQ R12, R11
+ SUBQ R15, R11
+ SUBQ DX, R11
+
+ // ----------------------------------------
+ // Begin inline of the extendMatch call.
+ //
+ // s = extendMatch(src, candidate+4, s+4)
+
+ // !!! R14 = &src[len(src)]
+ MOVQ src_len+32(FP), R14
+ ADDQ DX, R14
+
+ // !!! R13 = &src[len(src) - 8]
+ MOVQ R14, R13
+ SUBQ $8, R13
+
+ // !!! R15 = &src[candidate + 4]
+ ADDQ $4, R15
+ ADDQ DX, R15
+
+ // !!! s += 4
+ ADDQ $4, SI
+
+inlineExtendMatchCmp8:
+ // As long as we are 8 or more bytes before the end of src, we can load and
+ // compare 8 bytes at a time. If those 8 bytes are equal, repeat.
+ CMPQ SI, R13
+ JA inlineExtendMatchCmp1
+ MOVQ (R15), AX
+ MOVQ (SI), BX
+ CMPQ AX, BX
+ JNE inlineExtendMatchBSF
+ ADDQ $8, R15
+ ADDQ $8, SI
+ JMP inlineExtendMatchCmp8
+
+inlineExtendMatchBSF:
+ // If those 8 bytes were not equal, XOR the two 8 byte values, and return
+ // the index of the first byte that differs. The BSF instruction finds the
+ // least significant 1 bit, the amd64 architecture is little-endian, and
+ // the shift by 3 converts a bit index to a byte index.
+ XORQ AX, BX
+ BSFQ BX, BX
+ SHRQ $3, BX
+ ADDQ BX, SI
+ JMP inlineExtendMatchEnd
+
+inlineExtendMatchCmp1:
+ // In src's tail, compare 1 byte at a time.
+ CMPQ SI, R14
+ JAE inlineExtendMatchEnd
+ MOVB (R15), AX
+ MOVB (SI), BX
+ CMPB AX, BX
+ JNE inlineExtendMatchEnd
+ ADDQ $1, R15
+ ADDQ $1, SI
+ JMP inlineExtendMatchCmp1
+
+inlineExtendMatchEnd:
+ // End inline of the extendMatch call.
+ // ----------------------------------------
+
+ // ----------------------------------------
+ // Begin inline of the emitCopy call.
+ //
+ // d += emitCopy(dst[d:], base-candidate, s-base)
+
+ // !!! length := s - base
+ MOVQ SI, AX
+ SUBQ R12, AX
+
+inlineEmitCopyLoop0:
+ // for length >= 68 { etc }
+ CMPL AX, $68
+ JLT inlineEmitCopyStep1
+
+ // Emit a length 64 copy, encoded as 3 bytes.
+ MOVB $0xfe, 0(DI)
+ MOVW R11, 1(DI)
+ ADDQ $3, DI
+ SUBL $64, AX
+ JMP inlineEmitCopyLoop0
+
+inlineEmitCopyStep1:
+ // if length > 64 { etc }
+ CMPL AX, $64
+ JLE inlineEmitCopyStep2
+
+ // Emit a length 60 copy, encoded as 3 bytes.
+ MOVB $0xee, 0(DI)
+ MOVW R11, 1(DI)
+ ADDQ $3, DI
+ SUBL $60, AX
+
+inlineEmitCopyStep2:
+ // if length >= 12 || offset >= 2048 { goto inlineEmitCopyStep3 }
+ CMPL AX, $12
+ JGE inlineEmitCopyStep3
+ CMPL R11, $2048
+ JGE inlineEmitCopyStep3
+
+ // Emit the remaining copy, encoded as 2 bytes.
+ MOVB R11, 1(DI)
+ SHRL $8, R11
+ SHLB $5, R11
+ SUBB $4, AX
+ SHLB $2, AX
+ ORB AX, R11
+ ORB $1, R11
+ MOVB R11, 0(DI)
+ ADDQ $2, DI
+ JMP inlineEmitCopyEnd
+
+inlineEmitCopyStep3:
+ // Emit the remaining copy, encoded as 3 bytes.
+ SUBL $1, AX
+ SHLB $2, AX
+ ORB $2, AX
+ MOVB AX, 0(DI)
+ MOVW R11, 1(DI)
+ ADDQ $3, DI
+
+inlineEmitCopyEnd:
+ // End inline of the emitCopy call.
+ // ----------------------------------------
+
+ // nextEmit = s
+ MOVQ SI, R10
+
+ // if s >= sLimit { goto emitRemainder }
+ MOVQ SI, AX
+ SUBQ DX, AX
+ CMPQ AX, R9
+ JAE emitRemainder
+
+ // As per the encode_other.go code:
+ //
+ // We could immediately etc.
+
+ // x := load64(src, s-1)
+ MOVQ -1(SI), R14
+
+ // prevHash := hash(uint32(x>>0), shift)
+ MOVL R14, R11
+ IMULL $0x1e35a7bd, R11
+ SHRL CX, R11
+
+ // table[prevHash] = uint16(s-1)
+ MOVQ SI, AX
+ SUBQ DX, AX
+ SUBQ $1, AX
+
+ // XXX: MOVW AX, table-32768(SP)(R11*2)
+ // XXX: 66 42 89 44 5c 78 mov %ax,0x78(%rsp,%r11,2)
+ BYTE $0x66
+ BYTE $0x42
+ BYTE $0x89
+ BYTE $0x44
+ BYTE $0x5c
+ BYTE $0x78
+
+ // currHash := hash(uint32(x>>8), shift)
+ SHRQ $8, R14
+ MOVL R14, R11
+ IMULL $0x1e35a7bd, R11
+ SHRL CX, R11
+
+ // candidate = int(table[currHash])
+ // XXX: MOVWQZX table-32768(SP)(R11*2), R15
+ // XXX: 4e 0f b7 7c 5c 78 movzwq 0x78(%rsp,%r11,2),%r15
+ BYTE $0x4e
+ BYTE $0x0f
+ BYTE $0xb7
+ BYTE $0x7c
+ BYTE $0x5c
+ BYTE $0x78
+
+ // table[currHash] = uint16(s)
+ ADDQ $1, AX
+
+ // XXX: MOVW AX, table-32768(SP)(R11*2)
+ // XXX: 66 42 89 44 5c 78 mov %ax,0x78(%rsp,%r11,2)
+ BYTE $0x66
+ BYTE $0x42
+ BYTE $0x89
+ BYTE $0x44
+ BYTE $0x5c
+ BYTE $0x78
+
+ // if uint32(x>>8) == load32(src, candidate) { continue }
+ MOVL (DX)(R15*1), BX
+ CMPL R14, BX
+ JEQ inner1
+
+ // nextHash = hash(uint32(x>>16), shift)
+ SHRQ $8, R14
+ MOVL R14, R11
+ IMULL $0x1e35a7bd, R11
+ SHRL CX, R11
+
+ // s++
+ ADDQ $1, SI
+
+ // break out of the inner1 for loop, i.e. continue the outer loop.
+ JMP outer
+
+emitRemainder:
+ // if nextEmit < len(src) { etc }
+ MOVQ src_len+32(FP), AX
+ ADDQ DX, AX
+ CMPQ R10, AX
+ JEQ encodeBlockEnd
+
+ // d += emitLiteral(dst[d:], src[nextEmit:])
+ //
+ // Push args.
+ MOVQ DI, 0(SP)
+ MOVQ $0, 8(SP) // Unnecessary, as the callee ignores it, but conservative.
+ MOVQ $0, 16(SP) // Unnecessary, as the callee ignores it, but conservative.
+ MOVQ R10, 24(SP)
+ SUBQ R10, AX
+ MOVQ AX, 32(SP)
+ MOVQ AX, 40(SP) // Unnecessary, as the callee ignores it, but conservative.
+
+ // Spill local variables (registers) onto the stack; call; unspill.
+ MOVQ DI, 80(SP)
+ CALL ·emitLiteral(SB)
+ MOVQ 80(SP), DI
+
+ // Finish the "d +=" part of "d += emitLiteral(etc)".
+ ADDQ 48(SP), DI
+
+encodeBlockEnd:
+ MOVQ dst_base+0(FP), AX
+ SUBQ AX, DI
+ MOVQ DI, d+48(FP)
+ RET
diff --git a/vendor/github.com/golang/snappy/encode_other.go b/vendor/github.com/golang/snappy/encode_other.go
new file mode 100644
index 0000000..dbcae90
--- /dev/null
+++ b/vendor/github.com/golang/snappy/encode_other.go
@@ -0,0 +1,238 @@
+// Copyright 2016 The Snappy-Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !amd64 appengine !gc noasm
+
+package snappy
+
+func load32(b []byte, i int) uint32 {
+ b = b[i : i+4 : len(b)] // Help the compiler eliminate bounds checks on the next line.
+ return uint32(b[0]) | uint32(b[1])<<8 | uint32(b[2])<<16 | uint32(b[3])<<24
+}
+
+func load64(b []byte, i int) uint64 {
+ b = b[i : i+8 : len(b)] // Help the compiler eliminate bounds checks on the next line.
+ return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 |
+ uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
+}
+
+// emitLiteral writes a literal chunk and returns the number of bytes written.
+//
+// It assumes that:
+// dst is long enough to hold the encoded bytes
+// 1 <= len(lit) && len(lit) <= 65536
+func emitLiteral(dst, lit []byte) int {
+ i, n := 0, uint(len(lit)-1)
+ switch {
+ case n < 60:
+ dst[0] = uint8(n)<<2 | tagLiteral
+ i = 1
+ case n < 1<<8:
+ dst[0] = 60<<2 | tagLiteral
+ dst[1] = uint8(n)
+ i = 2
+ default:
+ dst[0] = 61<<2 | tagLiteral
+ dst[1] = uint8(n)
+ dst[2] = uint8(n >> 8)
+ i = 3
+ }
+ return i + copy(dst[i:], lit)
+}
+
+// emitCopy writes a copy chunk and returns the number of bytes written.
+//
+// It assumes that:
+// dst is long enough to hold the encoded bytes
+// 1 <= offset && offset <= 65535
+// 4 <= length && length <= 65535
+func emitCopy(dst []byte, offset, length int) int {
+ i := 0
+ // The maximum length for a single tagCopy1 or tagCopy2 op is 64 bytes. The
+ // threshold for this loop is a little higher (at 68 = 64 + 4), and the
+ // length emitted down below is is a little lower (at 60 = 64 - 4), because
+ // it's shorter to encode a length 67 copy as a length 60 tagCopy2 followed
+ // by a length 7 tagCopy1 (which encodes as 3+2 bytes) than to encode it as
+ // a length 64 tagCopy2 followed by a length 3 tagCopy2 (which encodes as
+ // 3+3 bytes). The magic 4 in the 64±4 is because the minimum length for a
+ // tagCopy1 op is 4 bytes, which is why a length 3 copy has to be an
+ // encodes-as-3-bytes tagCopy2 instead of an encodes-as-2-bytes tagCopy1.
+ for length >= 68 {
+ // Emit a length 64 copy, encoded as 3 bytes.
+ dst[i+0] = 63<<2 | tagCopy2
+ dst[i+1] = uint8(offset)
+ dst[i+2] = uint8(offset >> 8)
+ i += 3
+ length -= 64
+ }
+ if length > 64 {
+ // Emit a length 60 copy, encoded as 3 bytes.
+ dst[i+0] = 59<<2 | tagCopy2
+ dst[i+1] = uint8(offset)
+ dst[i+2] = uint8(offset >> 8)
+ i += 3
+ length -= 60
+ }
+ if length >= 12 || offset >= 2048 {
+ // Emit the remaining copy, encoded as 3 bytes.
+ dst[i+0] = uint8(length-1)<<2 | tagCopy2
+ dst[i+1] = uint8(offset)
+ dst[i+2] = uint8(offset >> 8)
+ return i + 3
+ }
+ // Emit the remaining copy, encoded as 2 bytes.
+ dst[i+0] = uint8(offset>>8)<<5 | uint8(length-4)<<2 | tagCopy1
+ dst[i+1] = uint8(offset)
+ return i + 2
+}
+
+// extendMatch returns the largest k such that k <= len(src) and that
+// src[i:i+k-j] and src[j:k] have the same contents.
+//
+// It assumes that:
+// 0 <= i && i < j && j <= len(src)
+func extendMatch(src []byte, i, j int) int {
+ for ; j < len(src) && src[i] == src[j]; i, j = i+1, j+1 {
+ }
+ return j
+}
+
+func hash(u, shift uint32) uint32 {
+ return (u * 0x1e35a7bd) >> shift
+}
+
+// encodeBlock encodes a non-empty src to a guaranteed-large-enough dst. It
+// assumes that the varint-encoded length of the decompressed bytes has already
+// been written.
+//
+// It also assumes that:
+// len(dst) >= MaxEncodedLen(len(src)) &&
+// minNonLiteralBlockSize <= len(src) && len(src) <= maxBlockSize
+func encodeBlock(dst, src []byte) (d int) {
+ // Initialize the hash table. Its size ranges from 1<<8 to 1<<14 inclusive.
+ // The table element type is uint16, as s < sLimit and sLimit < len(src)
+ // and len(src) <= maxBlockSize and maxBlockSize == 65536.
+ const (
+ maxTableSize = 1 << 14
+ // tableMask is redundant, but helps the compiler eliminate bounds
+ // checks.
+ tableMask = maxTableSize - 1
+ )
+ shift := uint32(32 - 8)
+ for tableSize := 1 << 8; tableSize < maxTableSize && tableSize < len(src); tableSize *= 2 {
+ shift--
+ }
+ // In Go, all array elements are zero-initialized, so there is no advantage
+ // to a smaller tableSize per se. However, it matches the C++ algorithm,
+ // and in the asm versions of this code, we can get away with zeroing only
+ // the first tableSize elements.
+ var table [maxTableSize]uint16
+
+ // sLimit is when to stop looking for offset/length copies. The inputMargin
+ // lets us use a fast path for emitLiteral in the main loop, while we are
+ // looking for copies.
+ sLimit := len(src) - inputMargin
+
+ // nextEmit is where in src the next emitLiteral should start from.
+ nextEmit := 0
+
+ // The encoded form must start with a literal, as there are no previous
+ // bytes to copy, so we start looking for hash matches at s == 1.
+ s := 1
+ nextHash := hash(load32(src, s), shift)
+
+ for {
+ // Copied from the C++ snappy implementation:
+ //
+ // Heuristic match skipping: If 32 bytes are scanned with no matches
+ // found, start looking only at every other byte. If 32 more bytes are
+ // scanned (or skipped), look at every third byte, etc.. When a match
+ // is found, immediately go back to looking at every byte. This is a
+ // small loss (~5% performance, ~0.1% density) for compressible data
+ // due to more bookkeeping, but for non-compressible data (such as
+ // JPEG) it's a huge win since the compressor quickly "realizes" the
+ // data is incompressible and doesn't bother looking for matches
+ // everywhere.
+ //
+ // The "skip" variable keeps track of how many bytes there are since
+ // the last match; dividing it by 32 (ie. right-shifting by five) gives
+ // the number of bytes to move ahead for each iteration.
+ skip := 32
+
+ nextS := s
+ candidate := 0
+ for {
+ s = nextS
+ bytesBetweenHashLookups := skip >> 5
+ nextS = s + bytesBetweenHashLookups
+ skip += bytesBetweenHashLookups
+ if nextS > sLimit {
+ goto emitRemainder
+ }
+ candidate = int(table[nextHash&tableMask])
+ table[nextHash&tableMask] = uint16(s)
+ nextHash = hash(load32(src, nextS), shift)
+ if load32(src, s) == load32(src, candidate) {
+ break
+ }
+ }
+
+ // A 4-byte match has been found. We'll later see if more than 4 bytes
+ // match. But, prior to the match, src[nextEmit:s] are unmatched. Emit
+ // them as literal bytes.
+ d += emitLiteral(dst[d:], src[nextEmit:s])
+
+ // Call emitCopy, and then see if another emitCopy could be our next
+ // move. Repeat until we find no match for the input immediately after
+ // what was consumed by the last emitCopy call.
+ //
+ // If we exit this loop normally then we need to call emitLiteral next,
+ // though we don't yet know how big the literal will be. We handle that
+ // by proceeding to the next iteration of the main loop. We also can
+ // exit this loop via goto if we get close to exhausting the input.
+ for {
+ // Invariant: we have a 4-byte match at s, and no need to emit any
+ // literal bytes prior to s.
+ base := s
+
+ // Extend the 4-byte match as long as possible.
+ //
+ // This is an inlined version of:
+ // s = extendMatch(src, candidate+4, s+4)
+ s += 4
+ for i := candidate + 4; s < len(src) && src[i] == src[s]; i, s = i+1, s+1 {
+ }
+
+ d += emitCopy(dst[d:], base-candidate, s-base)
+ nextEmit = s
+ if s >= sLimit {
+ goto emitRemainder
+ }
+
+ // We could immediately start working at s now, but to improve
+ // compression we first update the hash table at s-1 and at s. If
+ // another emitCopy is not our next move, also calculate nextHash
+ // at s+1. At least on GOARCH=amd64, these three hash calculations
+ // are faster as one load64 call (with some shifts) instead of
+ // three load32 calls.
+ x := load64(src, s-1)
+ prevHash := hash(uint32(x>>0), shift)
+ table[prevHash&tableMask] = uint16(s - 1)
+ currHash := hash(uint32(x>>8), shift)
+ candidate = int(table[currHash&tableMask])
+ table[currHash&tableMask] = uint16(s)
+ if uint32(x>>8) != load32(src, candidate) {
+ nextHash = hash(uint32(x>>16), shift)
+ s++
+ break
+ }
+ }
+ }
+
+emitRemainder:
+ if nextEmit < len(src) {
+ d += emitLiteral(dst[d:], src[nextEmit:])
+ }
+ return d
+}
diff --git a/vendor/github.com/golang/snappy/snappy.go b/vendor/github.com/golang/snappy/snappy.go
new file mode 100644
index 0000000..ece692e
--- /dev/null
+++ b/vendor/github.com/golang/snappy/snappy.go
@@ -0,0 +1,98 @@
+// Copyright 2011 The Snappy-Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package snappy implements the Snappy compression format. It aims for very
+// high speeds and reasonable compression.
+//
+// There are actually two Snappy formats: block and stream. They are related,
+// but different: trying to decompress block-compressed data as a Snappy stream
+// will fail, and vice versa. The block format is the Decode and Encode
+// functions and the stream format is the Reader and Writer types.
+//
+// The block format, the more common case, is used when the complete size (the
+// number of bytes) of the original data is known upfront, at the time
+// compression starts. The stream format, also known as the framing format, is
+// for when that isn't always true.
+//
+// The canonical, C++ implementation is at https://github.com/google/snappy and
+// it only implements the block format.
+package snappy // import "github.com/golang/snappy"
+
+import (
+ "hash/crc32"
+)
+
+/*
+Each encoded block begins with the varint-encoded length of the decoded data,
+followed by a sequence of chunks. Chunks begin and end on byte boundaries. The
+first byte of each chunk is broken into its 2 least and 6 most significant bits
+called l and m: l ranges in [0, 4) and m ranges in [0, 64). l is the chunk tag.
+Zero means a literal tag. All other values mean a copy tag.
+
+For literal tags:
+ - If m < 60, the next 1 + m bytes are literal bytes.
+ - Otherwise, let n be the little-endian unsigned integer denoted by the next
+ m - 59 bytes. The next 1 + n bytes after that are literal bytes.
+
+For copy tags, length bytes are copied from offset bytes ago, in the style of
+Lempel-Ziv compression algorithms. In particular:
+ - For l == 1, the offset ranges in [0, 1<<11) and the length in [4, 12).
+ The length is 4 + the low 3 bits of m. The high 3 bits of m form bits 8-10
+ of the offset. The next byte is bits 0-7 of the offset.
+ - For l == 2, the offset ranges in [0, 1<<16) and the length in [1, 65).
+ The length is 1 + m. The offset is the little-endian unsigned integer
+ denoted by the next 2 bytes.
+ - For l == 3, this tag is a legacy format that is no longer issued by most
+ encoders. Nonetheless, the offset ranges in [0, 1<<32) and the length in
+ [1, 65). The length is 1 + m. The offset is the little-endian unsigned
+ integer denoted by the next 4 bytes.
+*/
+const (
+ tagLiteral = 0x00
+ tagCopy1 = 0x01
+ tagCopy2 = 0x02
+ tagCopy4 = 0x03
+)
+
+const (
+ checksumSize = 4
+ chunkHeaderSize = 4
+ magicChunk = "\xff\x06\x00\x00" + magicBody
+ magicBody = "sNaPpY"
+
+ // maxBlockSize is the maximum size of the input to encodeBlock. It is not
+ // part of the wire format per se, but some parts of the encoder assume
+ // that an offset fits into a uint16.
+ //
+ // Also, for the framing format (Writer type instead of Encode function),
+ // https://github.com/google/snappy/blob/master/framing_format.txt says
+ // that "the uncompressed data in a chunk must be no longer than 65536
+ // bytes".
+ maxBlockSize = 65536
+
+ // maxEncodedLenOfMaxBlockSize equals MaxEncodedLen(maxBlockSize), but is
+ // hard coded to be a const instead of a variable, so that obufLen can also
+ // be a const. Their equivalence is confirmed by
+ // TestMaxEncodedLenOfMaxBlockSize.
+ maxEncodedLenOfMaxBlockSize = 76490
+
+ obufHeaderLen = len(magicChunk) + checksumSize + chunkHeaderSize
+ obufLen = obufHeaderLen + maxEncodedLenOfMaxBlockSize
+)
+
+const (
+ chunkTypeCompressedData = 0x00
+ chunkTypeUncompressedData = 0x01
+ chunkTypePadding = 0xfe
+ chunkTypeStreamIdentifier = 0xff
+)
+
+var crcTable = crc32.MakeTable(crc32.Castagnoli)
+
+// crc implements the checksum specified in section 3 of
+// https://github.com/google/snappy/blob/master/framing_format.txt
+func crc(b []byte) uint32 {
+ c := crc32.Update(0, crcTable, b)
+ return uint32(c>>15|c<<17) + 0xa282ead8
+}
diff --git a/vendor/github.com/miekg/dns/.codecov.yml b/vendor/github.com/miekg/dns/.codecov.yml
new file mode 100644
index 0000000..f91e5c1
--- /dev/null
+++ b/vendor/github.com/miekg/dns/.codecov.yml
@@ -0,0 +1,8 @@
+coverage:
+ status:
+ project:
+ default:
+ target: 40%
+ threshold: null
+ patch: false
+ changes: false
diff --git a/vendor/github.com/miekg/dns/.gitignore b/vendor/github.com/miekg/dns/.gitignore
new file mode 100644
index 0000000..776cd95
--- /dev/null
+++ b/vendor/github.com/miekg/dns/.gitignore
@@ -0,0 +1,4 @@
+*.6
+tags
+test.out
+a.out
diff --git a/vendor/github.com/miekg/dns/.travis.yml b/vendor/github.com/miekg/dns/.travis.yml
new file mode 100644
index 0000000..8eaa064
--- /dev/null
+++ b/vendor/github.com/miekg/dns/.travis.yml
@@ -0,0 +1,17 @@
+language: go
+sudo: false
+
+go:
+ - "1.12.x"
+ - "1.13.x"
+ - tip
+
+env:
+ - GO111MODULE=on
+
+script:
+ - go generate ./... && test `git ls-files --modified | wc -l` = 0
+ - go test -race -v -bench=. -coverprofile=coverage.txt -covermode=atomic ./...
+
+after_success:
+ - bash <(curl -s https://codecov.io/bash)
diff --git a/vendor/github.com/miekg/dns/AUTHORS b/vendor/github.com/miekg/dns/AUTHORS
new file mode 100644
index 0000000..1965683
--- /dev/null
+++ b/vendor/github.com/miekg/dns/AUTHORS
@@ -0,0 +1 @@
+Miek Gieben
diff --git a/vendor/github.com/miekg/dns/CODEOWNERS b/vendor/github.com/miekg/dns/CODEOWNERS
new file mode 100644
index 0000000..e091703
--- /dev/null
+++ b/vendor/github.com/miekg/dns/CODEOWNERS
@@ -0,0 +1 @@
+* @miekg @tmthrgd
diff --git a/vendor/github.com/miekg/dns/CONTRIBUTORS b/vendor/github.com/miekg/dns/CONTRIBUTORS
new file mode 100644
index 0000000..5903779
--- /dev/null
+++ b/vendor/github.com/miekg/dns/CONTRIBUTORS
@@ -0,0 +1,10 @@
+Alex A. Skinner
+Andrew Tunnell-Jones
+Ask Bjørn Hansen
+Dave Cheney
+Dusty Wilson
+Marek Majkowski
+Peter van Dijk
+Omri Bahumi
+Alex Sergeyev
+James Hartig
diff --git a/vendor/github.com/miekg/dns/COPYRIGHT b/vendor/github.com/miekg/dns/COPYRIGHT
new file mode 100644
index 0000000..35702b1
--- /dev/null
+++ b/vendor/github.com/miekg/dns/COPYRIGHT
@@ -0,0 +1,9 @@
+Copyright 2009 The Go Authors. All rights reserved. Use of this source code
+is governed by a BSD-style license that can be found in the LICENSE file.
+Extensions of the original work are copyright (c) 2011 Miek Gieben
+
+Copyright 2011 Miek Gieben. All rights reserved. Use of this source code is
+governed by a BSD-style license that can be found in the LICENSE file.
+
+Copyright 2014 CloudFlare. All rights reserved. Use of this source code is
+governed by a BSD-style license that can be found in the LICENSE file.
diff --git a/vendor/github.com/miekg/dns/LICENSE b/vendor/github.com/miekg/dns/LICENSE
new file mode 100644
index 0000000..55f12ab
--- /dev/null
+++ b/vendor/github.com/miekg/dns/LICENSE
@@ -0,0 +1,30 @@
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+ * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+As this is fork of the official Go code the same license applies.
+Extensions of the original work are copyright (c) 2011 Miek Gieben
diff --git a/vendor/github.com/miekg/dns/Makefile.fuzz b/vendor/github.com/miekg/dns/Makefile.fuzz
new file mode 100644
index 0000000..dc158c4
--- /dev/null
+++ b/vendor/github.com/miekg/dns/Makefile.fuzz
@@ -0,0 +1,33 @@
+# Makefile for fuzzing
+#
+# Use go-fuzz and needs the tools installed.
+# See https://blog.cloudflare.com/dns-parser-meet-go-fuzzer/
+#
+# Installing go-fuzz:
+# $ make -f Makefile.fuzz get
+# Installs:
+# * github.com/dvyukov/go-fuzz/go-fuzz
+# * get github.com/dvyukov/go-fuzz/go-fuzz-build
+
+all: build
+
+.PHONY: build
+build:
+ go-fuzz-build -tags fuzz github.com/miekg/dns
+
+.PHONY: build-newrr
+build-newrr:
+ go-fuzz-build -func FuzzNewRR -tags fuzz github.com/miekg/dns
+
+.PHONY: fuzz
+fuzz:
+ go-fuzz -bin=dns-fuzz.zip -workdir=fuzz
+
+.PHONY: get
+get:
+ go get github.com/dvyukov/go-fuzz/go-fuzz
+ go get github.com/dvyukov/go-fuzz/go-fuzz-build
+
+.PHONY: clean
+clean:
+ rm *-fuzz.zip
diff --git a/vendor/github.com/miekg/dns/Makefile.release b/vendor/github.com/miekg/dns/Makefile.release
new file mode 100644
index 0000000..8fb748e
--- /dev/null
+++ b/vendor/github.com/miekg/dns/Makefile.release
@@ -0,0 +1,52 @@
+# Makefile for releasing.
+#
+# The release is controlled from version.go. The version found there is
+# used to tag the git repo, we're not building any artifects so there is nothing
+# to upload to github.
+#
+# * Up the version in version.go
+# * Run: make -f Makefile.release release
+# * will *commit* your change with 'Release $VERSION'
+# * push to github
+#
+
+define GO
+//+build ignore
+
+package main
+
+import (
+ "fmt"
+
+ "github.com/miekg/dns"
+)
+
+func main() {
+ fmt.Println(dns.Version.String())
+}
+endef
+
+$(file > version_release.go,$(GO))
+VERSION:=$(shell go run version_release.go)
+TAG="v$(VERSION)"
+
+all:
+ @echo Use the \'release\' target to start a release $(VERSION)
+ rm -f version_release.go
+
+.PHONY: release
+release: commit push
+ @echo Released $(VERSION)
+ rm -f version_release.go
+
+.PHONY: commit
+commit:
+ @echo Committing release $(VERSION)
+ git commit -am"Release $(VERSION)"
+ git tag $(TAG)
+
+.PHONY: push
+push:
+ @echo Pushing release $(VERSION) to master
+ git push --tags
+ git push
diff --git a/vendor/github.com/miekg/dns/README.md b/vendor/github.com/miekg/dns/README.md
new file mode 100644
index 0000000..126fe62
--- /dev/null
+++ b/vendor/github.com/miekg/dns/README.md
@@ -0,0 +1,175 @@
+[](https://travis-ci.org/miekg/dns)
+[](https://codecov.io/github/miekg/dns?branch=master)
+[](https://goreportcard.com/report/miekg/dns)
+[](https://godoc.org/github.com/miekg/dns)
+
+# Alternative (more granular) approach to a DNS library
+
+> Less is more.
+
+Complete and usable DNS library. All Resource Records are supported, including the DNSSEC types.
+It follows a lean and mean philosophy. If there is stuff you should know as a DNS programmer there
+isn't a convenience function for it. Server side and client side programming is supported, i.e. you
+can build servers and resolvers with it.
+
+We try to keep the "master" branch as sane as possible and at the bleeding edge of standards,
+avoiding breaking changes wherever reasonable. We support the last two versions of Go.
+
+# Goals
+
+* KISS;
+* Fast;
+* Small API. If it's easy to code in Go, don't make a function for it.
+
+# Users
+
+A not-so-up-to-date-list-that-may-be-actually-current:
+
+* https://github.com/coredns/coredns
+* https://cloudflare.com
+* https://github.com/abh/geodns
+* http://www.statdns.com/
+* http://www.dnsinspect.com/
+* https://github.com/chuangbo/jianbing-dictionary-dns
+* http://www.dns-lg.com/
+* https://github.com/fcambus/rrda
+* https://github.com/kenshinx/godns
+* https://github.com/skynetservices/skydns
+* https://github.com/hashicorp/consul
+* https://github.com/DevelopersPL/godnsagent
+* https://github.com/duedil-ltd/discodns
+* https://github.com/StalkR/dns-reverse-proxy
+* https://github.com/tianon/rawdns
+* https://mesosphere.github.io/mesos-dns/
+* https://pulse.turbobytes.com/
+* https://github.com/fcambus/statzone
+* https://github.com/benschw/dns-clb-go
+* https://github.com/corny/dnscheck for
+* https://namesmith.io
+* https://github.com/miekg/unbound
+* https://github.com/miekg/exdns
+* https://dnslookup.org
+* https://github.com/looterz/grimd
+* https://github.com/phamhongviet/serf-dns
+* https://github.com/mehrdadrad/mylg
+* https://github.com/bamarni/dockness
+* https://github.com/fffaraz/microdns
+* http://kelda.io
+* https://github.com/ipdcode/hades
+* https://github.com/StackExchange/dnscontrol/
+* https://www.dnsperf.com/
+* https://dnssectest.net/
+* https://dns.apebits.com
+* https://github.com/oif/apex
+* https://github.com/jedisct1/dnscrypt-proxy
+* https://github.com/jedisct1/rpdns
+* https://github.com/xor-gate/sshfp
+* https://github.com/rs/dnstrace
+* https://blitiri.com.ar/p/dnss ([github mirror](https://github.com/albertito/dnss))
+* https://github.com/semihalev/sdns
+* https://render.com
+* https://github.com/peterzen/goresolver
+* https://github.com/folbricht/routedns
+
+Send pull request if you want to be listed here.
+
+# Features
+
+* UDP/TCP queries, IPv4 and IPv6
+* RFC 1035 zone file parsing ($INCLUDE, $ORIGIN, $TTL and $GENERATE (for all record types) are supported
+* Fast
+* Server side programming (mimicking the net/http package)
+* Client side programming
+* DNSSEC: signing, validating and key generation for DSA, RSA, ECDSA and Ed25519
+* EDNS0, NSID, Cookies
+* AXFR/IXFR
+* TSIG, SIG(0)
+* DNS over TLS (DoT): encrypted connection between client and server over TCP
+* DNS name compression
+
+Have fun!
+
+Miek Gieben - 2010-2012 -
+DNS Authors 2012-
+
+# Building
+
+This library uses Go modules and uses semantic versioning. Building is done with the `go` tool, so
+the following should work:
+
+ go get github.com/miekg/dns
+ go build github.com/miekg/dns
+
+## Examples
+
+A short "how to use the API" is at the beginning of doc.go (this also will show when you call `godoc
+github.com/miekg/dns`).
+
+Example programs can be found in the `github.com/miekg/exdns` repository.
+
+## Supported RFCs
+
+*all of them*
+
+* 103{4,5} - DNS standard
+* 1348 - NSAP record (removed the record)
+* 1982 - Serial Arithmetic
+* 1876 - LOC record
+* 1995 - IXFR
+* 1996 - DNS notify
+* 2136 - DNS Update (dynamic updates)
+* 2181 - RRset definition - there is no RRset type though, just []RR
+* 2537 - RSAMD5 DNS keys
+* 2065 - DNSSEC (updated in later RFCs)
+* 2671 - EDNS record
+* 2782 - SRV record
+* 2845 - TSIG record
+* 2915 - NAPTR record
+* 2929 - DNS IANA Considerations
+* 3110 - RSASHA1 DNS keys
+* 3123 - APL record
+* 3225 - DO bit (DNSSEC OK)
+* 340{1,2,3} - NAPTR record
+* 3445 - Limiting the scope of (DNS)KEY
+* 3597 - Unknown RRs
+* 403{3,4,5} - DNSSEC + validation functions
+* 4255 - SSHFP record
+* 4343 - Case insensitivity
+* 4408 - SPF record
+* 4509 - SHA256 Hash in DS
+* 4592 - Wildcards in the DNS
+* 4635 - HMAC SHA TSIG
+* 4701 - DHCID
+* 4892 - id.server
+* 5001 - NSID
+* 5155 - NSEC3 record
+* 5205 - HIP record
+* 5702 - SHA2 in the DNS
+* 5936 - AXFR
+* 5966 - TCP implementation recommendations
+* 6605 - ECDSA
+* 6725 - IANA Registry Update
+* 6742 - ILNP DNS
+* 6840 - Clarifications and Implementation Notes for DNS Security
+* 6844 - CAA record
+* 6891 - EDNS0 update
+* 6895 - DNS IANA considerations
+* 6944 - DNSSEC DNSKEY Algorithm Status
+* 6975 - Algorithm Understanding in DNSSEC
+* 7043 - EUI48/EUI64 records
+* 7314 - DNS (EDNS) EXPIRE Option
+* 7477 - CSYNC RR
+* 7828 - edns-tcp-keepalive EDNS0 Option
+* 7553 - URI record
+* 7858 - DNS over TLS: Initiation and Performance Considerations
+* 7871 - EDNS0 Client Subnet
+* 7873 - Domain Name System (DNS) Cookies
+* 8080 - EdDSA for DNSSEC
+* 8499 - DNS Terminology
+
+## Loosely Based Upon
+
+* ldns -
+* NSD -
+* Net::DNS -
+* GRONG -
diff --git a/vendor/github.com/miekg/dns/acceptfunc.go b/vendor/github.com/miekg/dns/acceptfunc.go
new file mode 100644
index 0000000..825617f
--- /dev/null
+++ b/vendor/github.com/miekg/dns/acceptfunc.go
@@ -0,0 +1,61 @@
+package dns
+
+// MsgAcceptFunc is used early in the server code to accept or reject a message with RcodeFormatError.
+// It returns a MsgAcceptAction to indicate what should happen with the message.
+type MsgAcceptFunc func(dh Header) MsgAcceptAction
+
+// DefaultMsgAcceptFunc checks the request and will reject if:
+//
+// * isn't a request (don't respond in that case)
+//
+// * opcode isn't OpcodeQuery or OpcodeNotify
+//
+// * Zero bit isn't zero
+//
+// * has more than 1 question in the question section
+//
+// * has more than 1 RR in the Answer section
+//
+// * has more than 0 RRs in the Authority section
+//
+// * has more than 2 RRs in the Additional section
+//
+var DefaultMsgAcceptFunc MsgAcceptFunc = defaultMsgAcceptFunc
+
+// MsgAcceptAction represents the action to be taken.
+type MsgAcceptAction int
+
+const (
+ MsgAccept MsgAcceptAction = iota // Accept the message
+ MsgReject // Reject the message with a RcodeFormatError
+ MsgIgnore // Ignore the error and send nothing back.
+ MsgRejectNotImplemented // Reject the message with a RcodeNotImplemented
+)
+
+func defaultMsgAcceptFunc(dh Header) MsgAcceptAction {
+ if isResponse := dh.Bits&_QR != 0; isResponse {
+ return MsgIgnore
+ }
+
+ // Don't allow dynamic updates, because then the sections can contain a whole bunch of RRs.
+ opcode := int(dh.Bits>>11) & 0xF
+ if opcode != OpcodeQuery && opcode != OpcodeNotify {
+ return MsgRejectNotImplemented
+ }
+
+ if dh.Qdcount != 1 {
+ return MsgReject
+ }
+ // NOTIFY requests can have a SOA in the ANSWER section. See RFC 1996 Section 3.7 and 3.11.
+ if dh.Ancount > 1 {
+ return MsgReject
+ }
+ // IXFR request could have one SOA RR in the NS section. See RFC 1995, section 3.
+ if dh.Nscount > 1 {
+ return MsgReject
+ }
+ if dh.Arcount > 2 {
+ return MsgReject
+ }
+ return MsgAccept
+}
diff --git a/vendor/github.com/miekg/dns/client.go b/vendor/github.com/miekg/dns/client.go
new file mode 100644
index 0000000..db2761d
--- /dev/null
+++ b/vendor/github.com/miekg/dns/client.go
@@ -0,0 +1,415 @@
+package dns
+
+// A client implementation.
+
+import (
+ "context"
+ "crypto/tls"
+ "encoding/binary"
+ "fmt"
+ "io"
+ "net"
+ "strings"
+ "time"
+)
+
+const (
+ dnsTimeout time.Duration = 2 * time.Second
+ tcpIdleTimeout time.Duration = 8 * time.Second
+)
+
+// A Conn represents a connection to a DNS server.
+type Conn struct {
+ net.Conn // a net.Conn holding the connection
+ UDPSize uint16 // minimum receive buffer for UDP messages
+ TsigSecret map[string]string // secret(s) for Tsig map[], zonename must be in canonical form (lowercase, fqdn, see RFC 4034 Section 6.2)
+ tsigRequestMAC string
+}
+
+// A Client defines parameters for a DNS client.
+type Client struct {
+ Net string // if "tcp" or "tcp-tls" (DNS over TLS) a TCP query will be initiated, otherwise an UDP one (default is "" for UDP)
+ UDPSize uint16 // minimum receive buffer for UDP messages
+ TLSConfig *tls.Config // TLS connection configuration
+ Dialer *net.Dialer // a net.Dialer used to set local address, timeouts and more
+ // Timeout is a cumulative timeout for dial, write and read, defaults to 0 (disabled) - overrides DialTimeout, ReadTimeout,
+ // WriteTimeout when non-zero. Can be overridden with net.Dialer.Timeout (see Client.ExchangeWithDialer and
+ // Client.Dialer) or context.Context.Deadline (see the deprecated ExchangeContext)
+ Timeout time.Duration
+ DialTimeout time.Duration // net.DialTimeout, defaults to 2 seconds, or net.Dialer.Timeout if expiring earlier - overridden by Timeout when that value is non-zero
+ ReadTimeout time.Duration // net.Conn.SetReadTimeout value for connections, defaults to 2 seconds - overridden by Timeout when that value is non-zero
+ WriteTimeout time.Duration // net.Conn.SetWriteTimeout value for connections, defaults to 2 seconds - overridden by Timeout when that value is non-zero
+ TsigSecret map[string]string // secret(s) for Tsig map[], zonename must be in canonical form (lowercase, fqdn, see RFC 4034 Section 6.2)
+ SingleInflight bool // if true suppress multiple outstanding queries for the same Qname, Qtype and Qclass
+ group singleflight
+}
+
+// Exchange performs a synchronous UDP query. It sends the message m to the address
+// contained in a and waits for a reply. Exchange does not retry a failed query, nor
+// will it fall back to TCP in case of truncation.
+// See client.Exchange for more information on setting larger buffer sizes.
+func Exchange(m *Msg, a string) (r *Msg, err error) {
+ client := Client{Net: "udp"}
+ r, _, err = client.Exchange(m, a)
+ return r, err
+}
+
+func (c *Client) dialTimeout() time.Duration {
+ if c.Timeout != 0 {
+ return c.Timeout
+ }
+ if c.DialTimeout != 0 {
+ return c.DialTimeout
+ }
+ return dnsTimeout
+}
+
+func (c *Client) readTimeout() time.Duration {
+ if c.ReadTimeout != 0 {
+ return c.ReadTimeout
+ }
+ return dnsTimeout
+}
+
+func (c *Client) writeTimeout() time.Duration {
+ if c.WriteTimeout != 0 {
+ return c.WriteTimeout
+ }
+ return dnsTimeout
+}
+
+// Dial connects to the address on the named network.
+func (c *Client) Dial(address string) (conn *Conn, err error) {
+ // create a new dialer with the appropriate timeout
+ var d net.Dialer
+ if c.Dialer == nil {
+ d = net.Dialer{Timeout: c.getTimeoutForRequest(c.dialTimeout())}
+ } else {
+ d = *c.Dialer
+ }
+
+ network := c.Net
+ if network == "" {
+ network = "udp"
+ }
+
+ useTLS := strings.HasPrefix(network, "tcp") && strings.HasSuffix(network, "-tls")
+
+ conn = new(Conn)
+ if useTLS {
+ network = strings.TrimSuffix(network, "-tls")
+
+ conn.Conn, err = tls.DialWithDialer(&d, network, address, c.TLSConfig)
+ } else {
+ conn.Conn, err = d.Dial(network, address)
+ }
+ if err != nil {
+ return nil, err
+ }
+
+ return conn, nil
+}
+
+// Exchange performs a synchronous query. It sends the message m to the address
+// contained in a and waits for a reply. Basic use pattern with a *dns.Client:
+//
+// c := new(dns.Client)
+// in, rtt, err := c.Exchange(message, "127.0.0.1:53")
+//
+// Exchange does not retry a failed query, nor will it fall back to TCP in
+// case of truncation.
+// It is up to the caller to create a message that allows for larger responses to be
+// returned. Specifically this means adding an EDNS0 OPT RR that will advertise a larger
+// buffer, see SetEdns0. Messages without an OPT RR will fallback to the historic limit
+// of 512 bytes
+// To specify a local address or a timeout, the caller has to set the `Client.Dialer`
+// attribute appropriately
+func (c *Client) Exchange(m *Msg, address string) (r *Msg, rtt time.Duration, err error) {
+ if !c.SingleInflight {
+ return c.exchange(m, address)
+ }
+
+ q := m.Question[0]
+ key := fmt.Sprintf("%s:%d:%d", q.Name, q.Qtype, q.Qclass)
+ r, rtt, err, shared := c.group.Do(key, func() (*Msg, time.Duration, error) {
+ return c.exchange(m, address)
+ })
+ if r != nil && shared {
+ r = r.Copy()
+ }
+
+ return r, rtt, err
+}
+
+func (c *Client) exchange(m *Msg, a string) (r *Msg, rtt time.Duration, err error) {
+ var co *Conn
+
+ co, err = c.Dial(a)
+
+ if err != nil {
+ return nil, 0, err
+ }
+ defer co.Close()
+
+ opt := m.IsEdns0()
+ // If EDNS0 is used use that for size.
+ if opt != nil && opt.UDPSize() >= MinMsgSize {
+ co.UDPSize = opt.UDPSize()
+ }
+ // Otherwise use the client's configured UDP size.
+ if opt == nil && c.UDPSize >= MinMsgSize {
+ co.UDPSize = c.UDPSize
+ }
+
+ co.TsigSecret = c.TsigSecret
+ t := time.Now()
+ // write with the appropriate write timeout
+ co.SetWriteDeadline(t.Add(c.getTimeoutForRequest(c.writeTimeout())))
+ if err = co.WriteMsg(m); err != nil {
+ return nil, 0, err
+ }
+
+ co.SetReadDeadline(time.Now().Add(c.getTimeoutForRequest(c.readTimeout())))
+ r, err = co.ReadMsg()
+ if err == nil && r.Id != m.Id {
+ err = ErrId
+ }
+ rtt = time.Since(t)
+ return r, rtt, err
+}
+
+// ReadMsg reads a message from the connection co.
+// If the received message contains a TSIG record the transaction signature
+// is verified. This method always tries to return the message, however if an
+// error is returned there are no guarantees that the returned message is a
+// valid representation of the packet read.
+func (co *Conn) ReadMsg() (*Msg, error) {
+ p, err := co.ReadMsgHeader(nil)
+ if err != nil {
+ return nil, err
+ }
+
+ m := new(Msg)
+ if err := m.Unpack(p); err != nil {
+ // If an error was returned, we still want to allow the user to use
+ // the message, but naively they can just check err if they don't want
+ // to use an erroneous message
+ return m, err
+ }
+ if t := m.IsTsig(); t != nil {
+ if _, ok := co.TsigSecret[t.Hdr.Name]; !ok {
+ return m, ErrSecret
+ }
+ // Need to work on the original message p, as that was used to calculate the tsig.
+ err = TsigVerify(p, co.TsigSecret[t.Hdr.Name], co.tsigRequestMAC, false)
+ }
+ return m, err
+}
+
+// ReadMsgHeader reads a DNS message, parses and populates hdr (when hdr is not nil).
+// Returns message as a byte slice to be parsed with Msg.Unpack later on.
+// Note that error handling on the message body is not possible as only the header is parsed.
+func (co *Conn) ReadMsgHeader(hdr *Header) ([]byte, error) {
+ var (
+ p []byte
+ n int
+ err error
+ )
+
+ if _, ok := co.Conn.(net.PacketConn); ok {
+ if co.UDPSize > MinMsgSize {
+ p = make([]byte, co.UDPSize)
+ } else {
+ p = make([]byte, MinMsgSize)
+ }
+ n, err = co.Read(p)
+ } else {
+ var length uint16
+ if err := binary.Read(co.Conn, binary.BigEndian, &length); err != nil {
+ return nil, err
+ }
+
+ p = make([]byte, length)
+ n, err = io.ReadFull(co.Conn, p)
+ }
+
+ if err != nil {
+ return nil, err
+ } else if n < headerSize {
+ return nil, ErrShortRead
+ }
+
+ p = p[:n]
+ if hdr != nil {
+ dh, _, err := unpackMsgHdr(p, 0)
+ if err != nil {
+ return nil, err
+ }
+ *hdr = dh
+ }
+ return p, err
+}
+
+// Read implements the net.Conn read method.
+func (co *Conn) Read(p []byte) (n int, err error) {
+ if co.Conn == nil {
+ return 0, ErrConnEmpty
+ }
+
+ if _, ok := co.Conn.(net.PacketConn); ok {
+ // UDP connection
+ return co.Conn.Read(p)
+ }
+
+ var length uint16
+ if err := binary.Read(co.Conn, binary.BigEndian, &length); err != nil {
+ return 0, err
+ }
+ if int(length) > len(p) {
+ return 0, io.ErrShortBuffer
+ }
+
+ return io.ReadFull(co.Conn, p[:length])
+}
+
+// WriteMsg sends a message through the connection co.
+// If the message m contains a TSIG record the transaction
+// signature is calculated.
+func (co *Conn) WriteMsg(m *Msg) (err error) {
+ var out []byte
+ if t := m.IsTsig(); t != nil {
+ mac := ""
+ if _, ok := co.TsigSecret[t.Hdr.Name]; !ok {
+ return ErrSecret
+ }
+ out, mac, err = TsigGenerate(m, co.TsigSecret[t.Hdr.Name], co.tsigRequestMAC, false)
+ // Set for the next read, although only used in zone transfers
+ co.tsigRequestMAC = mac
+ } else {
+ out, err = m.Pack()
+ }
+ if err != nil {
+ return err
+ }
+ _, err = co.Write(out)
+ return err
+}
+
+// Write implements the net.Conn Write method.
+func (co *Conn) Write(p []byte) (int, error) {
+ if len(p) > MaxMsgSize {
+ return 0, &Error{err: "message too large"}
+ }
+
+ if _, ok := co.Conn.(net.PacketConn); ok {
+ return co.Conn.Write(p)
+ }
+
+ l := make([]byte, 2)
+ binary.BigEndian.PutUint16(l, uint16(len(p)))
+
+ n, err := (&net.Buffers{l, p}).WriteTo(co.Conn)
+ return int(n), err
+}
+
+// Return the appropriate timeout for a specific request
+func (c *Client) getTimeoutForRequest(timeout time.Duration) time.Duration {
+ var requestTimeout time.Duration
+ if c.Timeout != 0 {
+ requestTimeout = c.Timeout
+ } else {
+ requestTimeout = timeout
+ }
+ // net.Dialer.Timeout has priority if smaller than the timeouts computed so
+ // far
+ if c.Dialer != nil && c.Dialer.Timeout != 0 {
+ if c.Dialer.Timeout < requestTimeout {
+ requestTimeout = c.Dialer.Timeout
+ }
+ }
+ return requestTimeout
+}
+
+// Dial connects to the address on the named network.
+func Dial(network, address string) (conn *Conn, err error) {
+ conn = new(Conn)
+ conn.Conn, err = net.Dial(network, address)
+ if err != nil {
+ return nil, err
+ }
+ return conn, nil
+}
+
+// ExchangeContext performs a synchronous UDP query, like Exchange. It
+// additionally obeys deadlines from the passed Context.
+func ExchangeContext(ctx context.Context, m *Msg, a string) (r *Msg, err error) {
+ client := Client{Net: "udp"}
+ r, _, err = client.ExchangeContext(ctx, m, a)
+ // ignorint rtt to leave the original ExchangeContext API unchanged, but
+ // this function will go away
+ return r, err
+}
+
+// ExchangeConn performs a synchronous query. It sends the message m via the connection
+// c and waits for a reply. The connection c is not closed by ExchangeConn.
+// Deprecated: This function is going away, but can easily be mimicked:
+//
+// co := &dns.Conn{Conn: c} // c is your net.Conn
+// co.WriteMsg(m)
+// in, _ := co.ReadMsg()
+// co.Close()
+//
+func ExchangeConn(c net.Conn, m *Msg) (r *Msg, err error) {
+ println("dns: ExchangeConn: this function is deprecated")
+ co := new(Conn)
+ co.Conn = c
+ if err = co.WriteMsg(m); err != nil {
+ return nil, err
+ }
+ r, err = co.ReadMsg()
+ if err == nil && r.Id != m.Id {
+ err = ErrId
+ }
+ return r, err
+}
+
+// DialTimeout acts like Dial but takes a timeout.
+func DialTimeout(network, address string, timeout time.Duration) (conn *Conn, err error) {
+ client := Client{Net: network, Dialer: &net.Dialer{Timeout: timeout}}
+ return client.Dial(address)
+}
+
+// DialWithTLS connects to the address on the named network with TLS.
+func DialWithTLS(network, address string, tlsConfig *tls.Config) (conn *Conn, err error) {
+ if !strings.HasSuffix(network, "-tls") {
+ network += "-tls"
+ }
+ client := Client{Net: network, TLSConfig: tlsConfig}
+ return client.Dial(address)
+}
+
+// DialTimeoutWithTLS acts like DialWithTLS but takes a timeout.
+func DialTimeoutWithTLS(network, address string, tlsConfig *tls.Config, timeout time.Duration) (conn *Conn, err error) {
+ if !strings.HasSuffix(network, "-tls") {
+ network += "-tls"
+ }
+ client := Client{Net: network, Dialer: &net.Dialer{Timeout: timeout}, TLSConfig: tlsConfig}
+ return client.Dial(address)
+}
+
+// ExchangeContext acts like Exchange, but honors the deadline on the provided
+// context, if present. If there is both a context deadline and a configured
+// timeout on the client, the earliest of the two takes effect.
+func (c *Client) ExchangeContext(ctx context.Context, m *Msg, a string) (r *Msg, rtt time.Duration, err error) {
+ var timeout time.Duration
+ if deadline, ok := ctx.Deadline(); !ok {
+ timeout = 0
+ } else {
+ timeout = time.Until(deadline)
+ }
+ // not passing the context to the underlying calls, as the API does not support
+ // context. For timeouts you should set up Client.Dialer and call Client.Exchange.
+ // TODO(tmthrgd,miekg): this is a race condition.
+ c.Dialer = &net.Dialer{Timeout: timeout}
+ return c.Exchange(m, a)
+}
diff --git a/vendor/github.com/miekg/dns/clientconfig.go b/vendor/github.com/miekg/dns/clientconfig.go
new file mode 100644
index 0000000..e11b630
--- /dev/null
+++ b/vendor/github.com/miekg/dns/clientconfig.go
@@ -0,0 +1,135 @@
+package dns
+
+import (
+ "bufio"
+ "io"
+ "os"
+ "strconv"
+ "strings"
+)
+
+// ClientConfig wraps the contents of the /etc/resolv.conf file.
+type ClientConfig struct {
+ Servers []string // servers to use
+ Search []string // suffixes to append to local name
+ Port string // what port to use
+ Ndots int // number of dots in name to trigger absolute lookup
+ Timeout int // seconds before giving up on packet
+ Attempts int // lost packets before giving up on server, not used in the package dns
+}
+
+// ClientConfigFromFile parses a resolv.conf(5) like file and returns
+// a *ClientConfig.
+func ClientConfigFromFile(resolvconf string) (*ClientConfig, error) {
+ file, err := os.Open(resolvconf)
+ if err != nil {
+ return nil, err
+ }
+ defer file.Close()
+ return ClientConfigFromReader(file)
+}
+
+// ClientConfigFromReader works like ClientConfigFromFile but takes an io.Reader as argument
+func ClientConfigFromReader(resolvconf io.Reader) (*ClientConfig, error) {
+ c := new(ClientConfig)
+ scanner := bufio.NewScanner(resolvconf)
+ c.Servers = make([]string, 0)
+ c.Search = make([]string, 0)
+ c.Port = "53"
+ c.Ndots = 1
+ c.Timeout = 5
+ c.Attempts = 2
+
+ for scanner.Scan() {
+ if err := scanner.Err(); err != nil {
+ return nil, err
+ }
+ line := scanner.Text()
+ f := strings.Fields(line)
+ if len(f) < 1 {
+ continue
+ }
+ switch f[0] {
+ case "nameserver": // add one name server
+ if len(f) > 1 {
+ // One more check: make sure server name is
+ // just an IP address. Otherwise we need DNS
+ // to look it up.
+ name := f[1]
+ c.Servers = append(c.Servers, name)
+ }
+
+ case "domain": // set search path to just this domain
+ if len(f) > 1 {
+ c.Search = make([]string, 1)
+ c.Search[0] = f[1]
+ } else {
+ c.Search = make([]string, 0)
+ }
+
+ case "search": // set search path to given servers
+ c.Search = append([]string(nil), f[1:]...)
+
+ case "options": // magic options
+ for _, s := range f[1:] {
+ switch {
+ case len(s) >= 6 && s[:6] == "ndots:":
+ n, _ := strconv.Atoi(s[6:])
+ if n < 0 {
+ n = 0
+ } else if n > 15 {
+ n = 15
+ }
+ c.Ndots = n
+ case len(s) >= 8 && s[:8] == "timeout:":
+ n, _ := strconv.Atoi(s[8:])
+ if n < 1 {
+ n = 1
+ }
+ c.Timeout = n
+ case len(s) >= 9 && s[:9] == "attempts:":
+ n, _ := strconv.Atoi(s[9:])
+ if n < 1 {
+ n = 1
+ }
+ c.Attempts = n
+ case s == "rotate":
+ /* not imp */
+ }
+ }
+ }
+ }
+ return c, nil
+}
+
+// NameList returns all of the names that should be queried based on the
+// config. It is based off of go's net/dns name building, but it does not
+// check the length of the resulting names.
+func (c *ClientConfig) NameList(name string) []string {
+ // if this domain is already fully qualified, no append needed.
+ if IsFqdn(name) {
+ return []string{name}
+ }
+
+ // Check to see if the name has more labels than Ndots. Do this before making
+ // the domain fully qualified.
+ hasNdots := CountLabel(name) > c.Ndots
+ // Make the domain fully qualified.
+ name = Fqdn(name)
+
+ // Make a list of names based off search.
+ names := []string{}
+
+ // If name has enough dots, try that first.
+ if hasNdots {
+ names = append(names, name)
+ }
+ for _, s := range c.Search {
+ names = append(names, Fqdn(name+s))
+ }
+ // If we didn't have enough dots, try after suffixes.
+ if !hasNdots {
+ names = append(names, name)
+ }
+ return names
+}
diff --git a/vendor/github.com/miekg/dns/dane.go b/vendor/github.com/miekg/dns/dane.go
new file mode 100644
index 0000000..8c4a14e
--- /dev/null
+++ b/vendor/github.com/miekg/dns/dane.go
@@ -0,0 +1,43 @@
+package dns
+
+import (
+ "crypto/sha256"
+ "crypto/sha512"
+ "crypto/x509"
+ "encoding/hex"
+ "errors"
+)
+
+// CertificateToDANE converts a certificate to a hex string as used in the TLSA or SMIMEA records.
+func CertificateToDANE(selector, matchingType uint8, cert *x509.Certificate) (string, error) {
+ switch matchingType {
+ case 0:
+ switch selector {
+ case 0:
+ return hex.EncodeToString(cert.Raw), nil
+ case 1:
+ return hex.EncodeToString(cert.RawSubjectPublicKeyInfo), nil
+ }
+ case 1:
+ h := sha256.New()
+ switch selector {
+ case 0:
+ h.Write(cert.Raw)
+ return hex.EncodeToString(h.Sum(nil)), nil
+ case 1:
+ h.Write(cert.RawSubjectPublicKeyInfo)
+ return hex.EncodeToString(h.Sum(nil)), nil
+ }
+ case 2:
+ h := sha512.New()
+ switch selector {
+ case 0:
+ h.Write(cert.Raw)
+ return hex.EncodeToString(h.Sum(nil)), nil
+ case 1:
+ h.Write(cert.RawSubjectPublicKeyInfo)
+ return hex.EncodeToString(h.Sum(nil)), nil
+ }
+ }
+ return "", errors.New("dns: bad MatchingType or Selector")
+}
diff --git a/vendor/github.com/miekg/dns/defaults.go b/vendor/github.com/miekg/dns/defaults.go
new file mode 100644
index 0000000..b059f6f
--- /dev/null
+++ b/vendor/github.com/miekg/dns/defaults.go
@@ -0,0 +1,378 @@
+package dns
+
+import (
+ "errors"
+ "net"
+ "strconv"
+ "strings"
+)
+
+const hexDigit = "0123456789abcdef"
+
+// Everything is assumed in ClassINET.
+
+// SetReply creates a reply message from a request message.
+func (dns *Msg) SetReply(request *Msg) *Msg {
+ dns.Id = request.Id
+ dns.Response = true
+ dns.Opcode = request.Opcode
+ if dns.Opcode == OpcodeQuery {
+ dns.RecursionDesired = request.RecursionDesired // Copy rd bit
+ dns.CheckingDisabled = request.CheckingDisabled // Copy cd bit
+ }
+ dns.Rcode = RcodeSuccess
+ if len(request.Question) > 0 {
+ dns.Question = make([]Question, 1)
+ dns.Question[0] = request.Question[0]
+ }
+ return dns
+}
+
+// SetQuestion creates a question message, it sets the Question
+// section, generates an Id and sets the RecursionDesired (RD)
+// bit to true.
+func (dns *Msg) SetQuestion(z string, t uint16) *Msg {
+ dns.Id = Id()
+ dns.RecursionDesired = true
+ dns.Question = make([]Question, 1)
+ dns.Question[0] = Question{z, t, ClassINET}
+ return dns
+}
+
+// SetNotify creates a notify message, it sets the Question
+// section, generates an Id and sets the Authoritative (AA)
+// bit to true.
+func (dns *Msg) SetNotify(z string) *Msg {
+ dns.Opcode = OpcodeNotify
+ dns.Authoritative = true
+ dns.Id = Id()
+ dns.Question = make([]Question, 1)
+ dns.Question[0] = Question{z, TypeSOA, ClassINET}
+ return dns
+}
+
+// SetRcode creates an error message suitable for the request.
+func (dns *Msg) SetRcode(request *Msg, rcode int) *Msg {
+ dns.SetReply(request)
+ dns.Rcode = rcode
+ return dns
+}
+
+// SetRcodeFormatError creates a message with FormError set.
+func (dns *Msg) SetRcodeFormatError(request *Msg) *Msg {
+ dns.Rcode = RcodeFormatError
+ dns.Opcode = OpcodeQuery
+ dns.Response = true
+ dns.Authoritative = false
+ dns.Id = request.Id
+ return dns
+}
+
+// SetUpdate makes the message a dynamic update message. It
+// sets the ZONE section to: z, TypeSOA, ClassINET.
+func (dns *Msg) SetUpdate(z string) *Msg {
+ dns.Id = Id()
+ dns.Response = false
+ dns.Opcode = OpcodeUpdate
+ dns.Compress = false // BIND9 cannot handle compression
+ dns.Question = make([]Question, 1)
+ dns.Question[0] = Question{z, TypeSOA, ClassINET}
+ return dns
+}
+
+// SetIxfr creates message for requesting an IXFR.
+func (dns *Msg) SetIxfr(z string, serial uint32, ns, mbox string) *Msg {
+ dns.Id = Id()
+ dns.Question = make([]Question, 1)
+ dns.Ns = make([]RR, 1)
+ s := new(SOA)
+ s.Hdr = RR_Header{z, TypeSOA, ClassINET, defaultTtl, 0}
+ s.Serial = serial
+ s.Ns = ns
+ s.Mbox = mbox
+ dns.Question[0] = Question{z, TypeIXFR, ClassINET}
+ dns.Ns[0] = s
+ return dns
+}
+
+// SetAxfr creates message for requesting an AXFR.
+func (dns *Msg) SetAxfr(z string) *Msg {
+ dns.Id = Id()
+ dns.Question = make([]Question, 1)
+ dns.Question[0] = Question{z, TypeAXFR, ClassINET}
+ return dns
+}
+
+// SetTsig appends a TSIG RR to the message.
+// This is only a skeleton TSIG RR that is added as the last RR in the
+// additional section. The Tsig is calculated when the message is being send.
+func (dns *Msg) SetTsig(z, algo string, fudge uint16, timesigned int64) *Msg {
+ t := new(TSIG)
+ t.Hdr = RR_Header{z, TypeTSIG, ClassANY, 0, 0}
+ t.Algorithm = algo
+ t.Fudge = fudge
+ t.TimeSigned = uint64(timesigned)
+ t.OrigId = dns.Id
+ dns.Extra = append(dns.Extra, t)
+ return dns
+}
+
+// SetEdns0 appends a EDNS0 OPT RR to the message.
+// TSIG should always the last RR in a message.
+func (dns *Msg) SetEdns0(udpsize uint16, do bool) *Msg {
+ e := new(OPT)
+ e.Hdr.Name = "."
+ e.Hdr.Rrtype = TypeOPT
+ e.SetUDPSize(udpsize)
+ if do {
+ e.SetDo()
+ }
+ dns.Extra = append(dns.Extra, e)
+ return dns
+}
+
+// IsTsig checks if the message has a TSIG record as the last record
+// in the additional section. It returns the TSIG record found or nil.
+func (dns *Msg) IsTsig() *TSIG {
+ if len(dns.Extra) > 0 {
+ if dns.Extra[len(dns.Extra)-1].Header().Rrtype == TypeTSIG {
+ return dns.Extra[len(dns.Extra)-1].(*TSIG)
+ }
+ }
+ return nil
+}
+
+// IsEdns0 checks if the message has a EDNS0 (OPT) record, any EDNS0
+// record in the additional section will do. It returns the OPT record
+// found or nil.
+func (dns *Msg) IsEdns0() *OPT {
+ // RFC 6891, Section 6.1.1 allows the OPT record to appear
+ // anywhere in the additional record section, but it's usually at
+ // the end so start there.
+ for i := len(dns.Extra) - 1; i >= 0; i-- {
+ if dns.Extra[i].Header().Rrtype == TypeOPT {
+ return dns.Extra[i].(*OPT)
+ }
+ }
+ return nil
+}
+
+// popEdns0 is like IsEdns0, but it removes the record from the message.
+func (dns *Msg) popEdns0() *OPT {
+ // RFC 6891, Section 6.1.1 allows the OPT record to appear
+ // anywhere in the additional record section, but it's usually at
+ // the end so start there.
+ for i := len(dns.Extra) - 1; i >= 0; i-- {
+ if dns.Extra[i].Header().Rrtype == TypeOPT {
+ opt := dns.Extra[i].(*OPT)
+ dns.Extra = append(dns.Extra[:i], dns.Extra[i+1:]...)
+ return opt
+ }
+ }
+ return nil
+}
+
+// IsDomainName checks if s is a valid domain name, it returns the number of
+// labels and true, when a domain name is valid. Note that non fully qualified
+// domain name is considered valid, in this case the last label is counted in
+// the number of labels. When false is returned the number of labels is not
+// defined. Also note that this function is extremely liberal; almost any
+// string is a valid domain name as the DNS is 8 bit protocol. It checks if each
+// label fits in 63 characters and that the entire name will fit into the 255
+// octet wire format limit.
+func IsDomainName(s string) (labels int, ok bool) {
+ // XXX: The logic in this function was copied from packDomainName and
+ // should be kept in sync with that function.
+
+ const lenmsg = 256
+
+ if len(s) == 0 { // Ok, for instance when dealing with update RR without any rdata.
+ return 0, false
+ }
+
+ s = Fqdn(s)
+
+ // Each dot ends a segment of the name. Except for escaped dots (\.), which
+ // are normal dots.
+
+ var (
+ off int
+ begin int
+ wasDot bool
+ )
+ for i := 0; i < len(s); i++ {
+ switch s[i] {
+ case '\\':
+ if off+1 > lenmsg {
+ return labels, false
+ }
+
+ // check for \DDD
+ if i+3 < len(s) && isDigit(s[i+1]) && isDigit(s[i+2]) && isDigit(s[i+3]) {
+ i += 3
+ begin += 3
+ } else {
+ i++
+ begin++
+ }
+
+ wasDot = false
+ case '.':
+ if wasDot {
+ // two dots back to back is not legal
+ return labels, false
+ }
+ wasDot = true
+
+ labelLen := i - begin
+ if labelLen >= 1<<6 { // top two bits of length must be clear
+ return labels, false
+ }
+
+ // off can already (we're in a loop) be bigger than lenmsg
+ // this happens when a name isn't fully qualified
+ off += 1 + labelLen
+ if off > lenmsg {
+ return labels, false
+ }
+
+ labels++
+ begin = i + 1
+ default:
+ wasDot = false
+ }
+ }
+
+ return labels, true
+}
+
+// IsSubDomain checks if child is indeed a child of the parent. If child and parent
+// are the same domain true is returned as well.
+func IsSubDomain(parent, child string) bool {
+ // Entire child is contained in parent
+ return CompareDomainName(parent, child) == CountLabel(parent)
+}
+
+// IsMsg sanity checks buf and returns an error if it isn't a valid DNS packet.
+// The checking is performed on the binary payload.
+func IsMsg(buf []byte) error {
+ // Header
+ if len(buf) < headerSize {
+ return errors.New("dns: bad message header")
+ }
+ // Header: Opcode
+ // TODO(miek): more checks here, e.g. check all header bits.
+ return nil
+}
+
+// IsFqdn checks if a domain name is fully qualified.
+func IsFqdn(s string) bool {
+ s2 := strings.TrimSuffix(s, ".")
+ if s == s2 {
+ return false
+ }
+
+ i := strings.LastIndexFunc(s2, func(r rune) bool {
+ return r != '\\'
+ })
+
+ // Test whether we have an even number of escape sequences before
+ // the dot or none.
+ return (len(s2)-i)%2 != 0
+}
+
+// IsRRset checks if a set of RRs is a valid RRset as defined by RFC 2181.
+// This means the RRs need to have the same type, name, and class. Returns true
+// if the RR set is valid, otherwise false.
+func IsRRset(rrset []RR) bool {
+ if len(rrset) == 0 {
+ return false
+ }
+ if len(rrset) == 1 {
+ return true
+ }
+ rrHeader := rrset[0].Header()
+ rrType := rrHeader.Rrtype
+ rrClass := rrHeader.Class
+ rrName := rrHeader.Name
+
+ for _, rr := range rrset[1:] {
+ curRRHeader := rr.Header()
+ if curRRHeader.Rrtype != rrType || curRRHeader.Class != rrClass || curRRHeader.Name != rrName {
+ // Mismatch between the records, so this is not a valid rrset for
+ //signing/verifying
+ return false
+ }
+ }
+
+ return true
+}
+
+// Fqdn return the fully qualified domain name from s.
+// If s is already fully qualified, it behaves as the identity function.
+func Fqdn(s string) string {
+ if IsFqdn(s) {
+ return s
+ }
+ return s + "."
+}
+
+// Copied from the official Go code.
+
+// ReverseAddr returns the in-addr.arpa. or ip6.arpa. hostname of the IP
+// address suitable for reverse DNS (PTR) record lookups or an error if it fails
+// to parse the IP address.
+func ReverseAddr(addr string) (arpa string, err error) {
+ ip := net.ParseIP(addr)
+ if ip == nil {
+ return "", &Error{err: "unrecognized address: " + addr}
+ }
+ if v4 := ip.To4(); v4 != nil {
+ buf := make([]byte, 0, net.IPv4len*4+len("in-addr.arpa."))
+ // Add it, in reverse, to the buffer
+ for i := len(v4) - 1; i >= 0; i-- {
+ buf = strconv.AppendInt(buf, int64(v4[i]), 10)
+ buf = append(buf, '.')
+ }
+ // Append "in-addr.arpa." and return (buf already has the final .)
+ buf = append(buf, "in-addr.arpa."...)
+ return string(buf), nil
+ }
+ // Must be IPv6
+ buf := make([]byte, 0, net.IPv6len*4+len("ip6.arpa."))
+ // Add it, in reverse, to the buffer
+ for i := len(ip) - 1; i >= 0; i-- {
+ v := ip[i]
+ buf = append(buf, hexDigit[v&0xF])
+ buf = append(buf, '.')
+ buf = append(buf, hexDigit[v>>4])
+ buf = append(buf, '.')
+ }
+ // Append "ip6.arpa." and return (buf already has the final .)
+ buf = append(buf, "ip6.arpa."...)
+ return string(buf), nil
+}
+
+// String returns the string representation for the type t.
+func (t Type) String() string {
+ if t1, ok := TypeToString[uint16(t)]; ok {
+ return t1
+ }
+ return "TYPE" + strconv.Itoa(int(t))
+}
+
+// String returns the string representation for the class c.
+func (c Class) String() string {
+ if s, ok := ClassToString[uint16(c)]; ok {
+ // Only emit mnemonics when they are unambiguous, specically ANY is in both.
+ if _, ok := StringToType[s]; !ok {
+ return s
+ }
+ }
+ return "CLASS" + strconv.Itoa(int(c))
+}
+
+// String returns the string representation for the name n.
+func (n Name) String() string {
+ return sprintName(string(n))
+}
diff --git a/vendor/github.com/miekg/dns/dns.go b/vendor/github.com/miekg/dns/dns.go
new file mode 100644
index 0000000..ad83a27
--- /dev/null
+++ b/vendor/github.com/miekg/dns/dns.go
@@ -0,0 +1,134 @@
+package dns
+
+import "strconv"
+
+const (
+ year68 = 1 << 31 // For RFC1982 (Serial Arithmetic) calculations in 32 bits.
+ defaultTtl = 3600 // Default internal TTL.
+
+ // DefaultMsgSize is the standard default for messages larger than 512 bytes.
+ DefaultMsgSize = 4096
+ // MinMsgSize is the minimal size of a DNS packet.
+ MinMsgSize = 512
+ // MaxMsgSize is the largest possible DNS packet.
+ MaxMsgSize = 65535
+)
+
+// Error represents a DNS error.
+type Error struct{ err string }
+
+func (e *Error) Error() string {
+ if e == nil {
+ return "dns: "
+ }
+ return "dns: " + e.err
+}
+
+// An RR represents a resource record.
+type RR interface {
+ // Header returns the header of an resource record. The header contains
+ // everything up to the rdata.
+ Header() *RR_Header
+ // String returns the text representation of the resource record.
+ String() string
+
+ // copy returns a copy of the RR
+ copy() RR
+
+ // len returns the length (in octets) of the compressed or uncompressed RR in wire format.
+ //
+ // If compression is nil, the uncompressed size will be returned, otherwise the compressed
+ // size will be returned and domain names will be added to the map for future compression.
+ len(off int, compression map[string]struct{}) int
+
+ // pack packs the records RDATA into wire format. The header will
+ // already have been packed into msg.
+ pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error)
+
+ // unpack unpacks an RR from wire format.
+ //
+ // This will only be called on a new and empty RR type with only the header populated. It
+ // will only be called if the record's RDATA is non-empty.
+ unpack(msg []byte, off int) (off1 int, err error)
+
+ // parse parses an RR from zone file format.
+ //
+ // This will only be called on a new and empty RR type with only the header populated.
+ parse(c *zlexer, origin string) *ParseError
+
+ // isDuplicate returns whether the two RRs are duplicates.
+ isDuplicate(r2 RR) bool
+}
+
+// RR_Header is the header all DNS resource records share.
+type RR_Header struct {
+ Name string `dns:"cdomain-name"`
+ Rrtype uint16
+ Class uint16
+ Ttl uint32
+ Rdlength uint16 // Length of data after header.
+}
+
+// Header returns itself. This is here to make RR_Header implements the RR interface.
+func (h *RR_Header) Header() *RR_Header { return h }
+
+// Just to implement the RR interface.
+func (h *RR_Header) copy() RR { return nil }
+
+func (h *RR_Header) String() string {
+ var s string
+
+ if h.Rrtype == TypeOPT {
+ s = ";"
+ // and maybe other things
+ }
+
+ s += sprintName(h.Name) + "\t"
+ s += strconv.FormatInt(int64(h.Ttl), 10) + "\t"
+ s += Class(h.Class).String() + "\t"
+ s += Type(h.Rrtype).String() + "\t"
+ return s
+}
+
+func (h *RR_Header) len(off int, compression map[string]struct{}) int {
+ l := domainNameLen(h.Name, off, compression, true)
+ l += 10 // rrtype(2) + class(2) + ttl(4) + rdlength(2)
+ return l
+}
+
+func (h *RR_Header) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ // RR_Header has no RDATA to pack.
+ return off, nil
+}
+
+func (h *RR_Header) unpack(msg []byte, off int) (int, error) {
+ panic("dns: internal error: unpack should never be called on RR_Header")
+}
+
+func (h *RR_Header) parse(c *zlexer, origin string) *ParseError {
+ panic("dns: internal error: parse should never be called on RR_Header")
+}
+
+// ToRFC3597 converts a known RR to the unknown RR representation from RFC 3597.
+func (rr *RFC3597) ToRFC3597(r RR) error {
+ buf := make([]byte, Len(r)*2)
+ headerEnd, off, err := packRR(r, buf, 0, compressionMap{}, false)
+ if err != nil {
+ return err
+ }
+ buf = buf[:off]
+
+ *rr = RFC3597{Hdr: *r.Header()}
+ rr.Hdr.Rdlength = uint16(off - headerEnd)
+
+ if noRdata(rr.Hdr) {
+ return nil
+ }
+
+ _, err = rr.unpack(buf, headerEnd)
+ if err != nil {
+ return err
+ }
+
+ return nil
+}
diff --git a/vendor/github.com/miekg/dns/dnssec.go b/vendor/github.com/miekg/dns/dnssec.go
new file mode 100644
index 0000000..12a693f
--- /dev/null
+++ b/vendor/github.com/miekg/dns/dnssec.go
@@ -0,0 +1,794 @@
+package dns
+
+import (
+ "bytes"
+ "crypto"
+ "crypto/dsa"
+ "crypto/ecdsa"
+ "crypto/elliptic"
+ _ "crypto/md5"
+ "crypto/rand"
+ "crypto/rsa"
+ _ "crypto/sha1"
+ _ "crypto/sha256"
+ _ "crypto/sha512"
+ "encoding/asn1"
+ "encoding/binary"
+ "encoding/hex"
+ "math/big"
+ "sort"
+ "strings"
+ "time"
+
+ "golang.org/x/crypto/ed25519"
+)
+
+// DNSSEC encryption algorithm codes.
+const (
+ _ uint8 = iota
+ RSAMD5
+ DH
+ DSA
+ _ // Skip 4, RFC 6725, section 2.1
+ RSASHA1
+ DSANSEC3SHA1
+ RSASHA1NSEC3SHA1
+ RSASHA256
+ _ // Skip 9, RFC 6725, section 2.1
+ RSASHA512
+ _ // Skip 11, RFC 6725, section 2.1
+ ECCGOST
+ ECDSAP256SHA256
+ ECDSAP384SHA384
+ ED25519
+ ED448
+ INDIRECT uint8 = 252
+ PRIVATEDNS uint8 = 253 // Private (experimental keys)
+ PRIVATEOID uint8 = 254
+)
+
+// AlgorithmToString is a map of algorithm IDs to algorithm names.
+var AlgorithmToString = map[uint8]string{
+ RSAMD5: "RSAMD5",
+ DH: "DH",
+ DSA: "DSA",
+ RSASHA1: "RSASHA1",
+ DSANSEC3SHA1: "DSA-NSEC3-SHA1",
+ RSASHA1NSEC3SHA1: "RSASHA1-NSEC3-SHA1",
+ RSASHA256: "RSASHA256",
+ RSASHA512: "RSASHA512",
+ ECCGOST: "ECC-GOST",
+ ECDSAP256SHA256: "ECDSAP256SHA256",
+ ECDSAP384SHA384: "ECDSAP384SHA384",
+ ED25519: "ED25519",
+ ED448: "ED448",
+ INDIRECT: "INDIRECT",
+ PRIVATEDNS: "PRIVATEDNS",
+ PRIVATEOID: "PRIVATEOID",
+}
+
+// AlgorithmToHash is a map of algorithm crypto hash IDs to crypto.Hash's.
+var AlgorithmToHash = map[uint8]crypto.Hash{
+ RSAMD5: crypto.MD5, // Deprecated in RFC 6725
+ DSA: crypto.SHA1,
+ RSASHA1: crypto.SHA1,
+ RSASHA1NSEC3SHA1: crypto.SHA1,
+ RSASHA256: crypto.SHA256,
+ ECDSAP256SHA256: crypto.SHA256,
+ ECDSAP384SHA384: crypto.SHA384,
+ RSASHA512: crypto.SHA512,
+ ED25519: crypto.Hash(0),
+}
+
+// DNSSEC hashing algorithm codes.
+const (
+ _ uint8 = iota
+ SHA1 // RFC 4034
+ SHA256 // RFC 4509
+ GOST94 // RFC 5933
+ SHA384 // Experimental
+ SHA512 // Experimental
+)
+
+// HashToString is a map of hash IDs to names.
+var HashToString = map[uint8]string{
+ SHA1: "SHA1",
+ SHA256: "SHA256",
+ GOST94: "GOST94",
+ SHA384: "SHA384",
+ SHA512: "SHA512",
+}
+
+// DNSKEY flag values.
+const (
+ SEP = 1
+ REVOKE = 1 << 7
+ ZONE = 1 << 8
+)
+
+// The RRSIG needs to be converted to wireformat with some of the rdata (the signature) missing.
+type rrsigWireFmt struct {
+ TypeCovered uint16
+ Algorithm uint8
+ Labels uint8
+ OrigTtl uint32
+ Expiration uint32
+ Inception uint32
+ KeyTag uint16
+ SignerName string `dns:"domain-name"`
+ /* No Signature */
+}
+
+// Used for converting DNSKEY's rdata to wirefmt.
+type dnskeyWireFmt struct {
+ Flags uint16
+ Protocol uint8
+ Algorithm uint8
+ PublicKey string `dns:"base64"`
+ /* Nothing is left out */
+}
+
+func divRoundUp(a, b int) int {
+ return (a + b - 1) / b
+}
+
+// KeyTag calculates the keytag (or key-id) of the DNSKEY.
+func (k *DNSKEY) KeyTag() uint16 {
+ if k == nil {
+ return 0
+ }
+ var keytag int
+ switch k.Algorithm {
+ case RSAMD5:
+ // Look at the bottom two bytes of the modules, which the last
+ // item in the pubkey.
+ // This algorithm has been deprecated, but keep this key-tag calculation.
+ modulus, _ := fromBase64([]byte(k.PublicKey))
+ if len(modulus) > 1 {
+ x := binary.BigEndian.Uint16(modulus[len(modulus)-2:])
+ keytag = int(x)
+ }
+ default:
+ keywire := new(dnskeyWireFmt)
+ keywire.Flags = k.Flags
+ keywire.Protocol = k.Protocol
+ keywire.Algorithm = k.Algorithm
+ keywire.PublicKey = k.PublicKey
+ wire := make([]byte, DefaultMsgSize)
+ n, err := packKeyWire(keywire, wire)
+ if err != nil {
+ return 0
+ }
+ wire = wire[:n]
+ for i, v := range wire {
+ if i&1 != 0 {
+ keytag += int(v) // must be larger than uint32
+ } else {
+ keytag += int(v) << 8
+ }
+ }
+ keytag += keytag >> 16 & 0xFFFF
+ keytag &= 0xFFFF
+ }
+ return uint16(keytag)
+}
+
+// ToDS converts a DNSKEY record to a DS record.
+func (k *DNSKEY) ToDS(h uint8) *DS {
+ if k == nil {
+ return nil
+ }
+ ds := new(DS)
+ ds.Hdr.Name = k.Hdr.Name
+ ds.Hdr.Class = k.Hdr.Class
+ ds.Hdr.Rrtype = TypeDS
+ ds.Hdr.Ttl = k.Hdr.Ttl
+ ds.Algorithm = k.Algorithm
+ ds.DigestType = h
+ ds.KeyTag = k.KeyTag()
+
+ keywire := new(dnskeyWireFmt)
+ keywire.Flags = k.Flags
+ keywire.Protocol = k.Protocol
+ keywire.Algorithm = k.Algorithm
+ keywire.PublicKey = k.PublicKey
+ wire := make([]byte, DefaultMsgSize)
+ n, err := packKeyWire(keywire, wire)
+ if err != nil {
+ return nil
+ }
+ wire = wire[:n]
+
+ owner := make([]byte, 255)
+ off, err1 := PackDomainName(strings.ToLower(k.Hdr.Name), owner, 0, nil, false)
+ if err1 != nil {
+ return nil
+ }
+ owner = owner[:off]
+ // RFC4034:
+ // digest = digest_algorithm( DNSKEY owner name | DNSKEY RDATA);
+ // "|" denotes concatenation
+ // DNSKEY RDATA = Flags | Protocol | Algorithm | Public Key.
+
+ var hash crypto.Hash
+ switch h {
+ case SHA1:
+ hash = crypto.SHA1
+ case SHA256:
+ hash = crypto.SHA256
+ case SHA384:
+ hash = crypto.SHA384
+ case SHA512:
+ hash = crypto.SHA512
+ default:
+ return nil
+ }
+
+ s := hash.New()
+ s.Write(owner)
+ s.Write(wire)
+ ds.Digest = hex.EncodeToString(s.Sum(nil))
+ return ds
+}
+
+// ToCDNSKEY converts a DNSKEY record to a CDNSKEY record.
+func (k *DNSKEY) ToCDNSKEY() *CDNSKEY {
+ c := &CDNSKEY{DNSKEY: *k}
+ c.Hdr = k.Hdr
+ c.Hdr.Rrtype = TypeCDNSKEY
+ return c
+}
+
+// ToCDS converts a DS record to a CDS record.
+func (d *DS) ToCDS() *CDS {
+ c := &CDS{DS: *d}
+ c.Hdr = d.Hdr
+ c.Hdr.Rrtype = TypeCDS
+ return c
+}
+
+// Sign signs an RRSet. The signature needs to be filled in with the values:
+// Inception, Expiration, KeyTag, SignerName and Algorithm. The rest is copied
+// from the RRset. Sign returns a non-nill error when the signing went OK.
+// There is no check if RRSet is a proper (RFC 2181) RRSet. If OrigTTL is non
+// zero, it is used as-is, otherwise the TTL of the RRset is used as the
+// OrigTTL.
+func (rr *RRSIG) Sign(k crypto.Signer, rrset []RR) error {
+ if k == nil {
+ return ErrPrivKey
+ }
+ // s.Inception and s.Expiration may be 0 (rollover etc.), the rest must be set
+ if rr.KeyTag == 0 || len(rr.SignerName) == 0 || rr.Algorithm == 0 {
+ return ErrKey
+ }
+
+ h0 := rrset[0].Header()
+ rr.Hdr.Rrtype = TypeRRSIG
+ rr.Hdr.Name = h0.Name
+ rr.Hdr.Class = h0.Class
+ if rr.OrigTtl == 0 { // If set don't override
+ rr.OrigTtl = h0.Ttl
+ }
+ rr.TypeCovered = h0.Rrtype
+ rr.Labels = uint8(CountLabel(h0.Name))
+
+ if strings.HasPrefix(h0.Name, "*") {
+ rr.Labels-- // wildcard, remove from label count
+ }
+
+ sigwire := new(rrsigWireFmt)
+ sigwire.TypeCovered = rr.TypeCovered
+ sigwire.Algorithm = rr.Algorithm
+ sigwire.Labels = rr.Labels
+ sigwire.OrigTtl = rr.OrigTtl
+ sigwire.Expiration = rr.Expiration
+ sigwire.Inception = rr.Inception
+ sigwire.KeyTag = rr.KeyTag
+ // For signing, lowercase this name
+ sigwire.SignerName = strings.ToLower(rr.SignerName)
+
+ // Create the desired binary blob
+ signdata := make([]byte, DefaultMsgSize)
+ n, err := packSigWire(sigwire, signdata)
+ if err != nil {
+ return err
+ }
+ signdata = signdata[:n]
+ wire, err := rawSignatureData(rrset, rr)
+ if err != nil {
+ return err
+ }
+
+ hash, ok := AlgorithmToHash[rr.Algorithm]
+ if !ok {
+ return ErrAlg
+ }
+
+ switch rr.Algorithm {
+ case ED25519:
+ // ed25519 signs the raw message and performs hashing internally.
+ // All other supported signature schemes operate over the pre-hashed
+ // message, and thus ed25519 must be handled separately here.
+ //
+ // The raw message is passed directly into sign and crypto.Hash(0) is
+ // used to signal to the crypto.Signer that the data has not been hashed.
+ signature, err := sign(k, append(signdata, wire...), crypto.Hash(0), rr.Algorithm)
+ if err != nil {
+ return err
+ }
+
+ rr.Signature = toBase64(signature)
+ case RSAMD5, DSA, DSANSEC3SHA1:
+ // See RFC 6944.
+ return ErrAlg
+ default:
+ h := hash.New()
+ h.Write(signdata)
+ h.Write(wire)
+
+ signature, err := sign(k, h.Sum(nil), hash, rr.Algorithm)
+ if err != nil {
+ return err
+ }
+
+ rr.Signature = toBase64(signature)
+ }
+
+ return nil
+}
+
+func sign(k crypto.Signer, hashed []byte, hash crypto.Hash, alg uint8) ([]byte, error) {
+ signature, err := k.Sign(rand.Reader, hashed, hash)
+ if err != nil {
+ return nil, err
+ }
+
+ switch alg {
+ case RSASHA1, RSASHA1NSEC3SHA1, RSASHA256, RSASHA512:
+ return signature, nil
+
+ case ECDSAP256SHA256, ECDSAP384SHA384:
+ ecdsaSignature := &struct {
+ R, S *big.Int
+ }{}
+ if _, err := asn1.Unmarshal(signature, ecdsaSignature); err != nil {
+ return nil, err
+ }
+
+ var intlen int
+ switch alg {
+ case ECDSAP256SHA256:
+ intlen = 32
+ case ECDSAP384SHA384:
+ intlen = 48
+ }
+
+ signature := intToBytes(ecdsaSignature.R, intlen)
+ signature = append(signature, intToBytes(ecdsaSignature.S, intlen)...)
+ return signature, nil
+
+ // There is no defined interface for what a DSA backed crypto.Signer returns
+ case DSA, DSANSEC3SHA1:
+ // t := divRoundUp(divRoundUp(p.PublicKey.Y.BitLen(), 8)-64, 8)
+ // signature := []byte{byte(t)}
+ // signature = append(signature, intToBytes(r1, 20)...)
+ // signature = append(signature, intToBytes(s1, 20)...)
+ // rr.Signature = signature
+
+ case ED25519:
+ return signature, nil
+ }
+
+ return nil, ErrAlg
+}
+
+// Verify validates an RRSet with the signature and key. This is only the
+// cryptographic test, the signature validity period must be checked separately.
+// This function copies the rdata of some RRs (to lowercase domain names) for the validation to work.
+func (rr *RRSIG) Verify(k *DNSKEY, rrset []RR) error {
+ // First the easy checks
+ if !IsRRset(rrset) {
+ return ErrRRset
+ }
+ if rr.KeyTag != k.KeyTag() {
+ return ErrKey
+ }
+ if rr.Hdr.Class != k.Hdr.Class {
+ return ErrKey
+ }
+ if rr.Algorithm != k.Algorithm {
+ return ErrKey
+ }
+ if !strings.EqualFold(rr.SignerName, k.Hdr.Name) {
+ return ErrKey
+ }
+ if k.Protocol != 3 {
+ return ErrKey
+ }
+
+ // IsRRset checked that we have at least one RR and that the RRs in
+ // the set have consistent type, class, and name. Also check that type and
+ // class matches the RRSIG record.
+ if h0 := rrset[0].Header(); h0.Class != rr.Hdr.Class || h0.Rrtype != rr.TypeCovered {
+ return ErrRRset
+ }
+
+ // RFC 4035 5.3.2. Reconstructing the Signed Data
+ // Copy the sig, except the rrsig data
+ sigwire := new(rrsigWireFmt)
+ sigwire.TypeCovered = rr.TypeCovered
+ sigwire.Algorithm = rr.Algorithm
+ sigwire.Labels = rr.Labels
+ sigwire.OrigTtl = rr.OrigTtl
+ sigwire.Expiration = rr.Expiration
+ sigwire.Inception = rr.Inception
+ sigwire.KeyTag = rr.KeyTag
+ sigwire.SignerName = strings.ToLower(rr.SignerName)
+ // Create the desired binary blob
+ signeddata := make([]byte, DefaultMsgSize)
+ n, err := packSigWire(sigwire, signeddata)
+ if err != nil {
+ return err
+ }
+ signeddata = signeddata[:n]
+ wire, err := rawSignatureData(rrset, rr)
+ if err != nil {
+ return err
+ }
+
+ sigbuf := rr.sigBuf() // Get the binary signature data
+ if rr.Algorithm == PRIVATEDNS { // PRIVATEOID
+ // TODO(miek)
+ // remove the domain name and assume its ours?
+ }
+
+ hash, ok := AlgorithmToHash[rr.Algorithm]
+ if !ok {
+ return ErrAlg
+ }
+
+ switch rr.Algorithm {
+ case RSASHA1, RSASHA1NSEC3SHA1, RSASHA256, RSASHA512, RSAMD5:
+ // TODO(mg): this can be done quicker, ie. cache the pubkey data somewhere??
+ pubkey := k.publicKeyRSA() // Get the key
+ if pubkey == nil {
+ return ErrKey
+ }
+
+ h := hash.New()
+ h.Write(signeddata)
+ h.Write(wire)
+ return rsa.VerifyPKCS1v15(pubkey, hash, h.Sum(nil), sigbuf)
+
+ case ECDSAP256SHA256, ECDSAP384SHA384:
+ pubkey := k.publicKeyECDSA()
+ if pubkey == nil {
+ return ErrKey
+ }
+
+ // Split sigbuf into the r and s coordinates
+ r := new(big.Int).SetBytes(sigbuf[:len(sigbuf)/2])
+ s := new(big.Int).SetBytes(sigbuf[len(sigbuf)/2:])
+
+ h := hash.New()
+ h.Write(signeddata)
+ h.Write(wire)
+ if ecdsa.Verify(pubkey, h.Sum(nil), r, s) {
+ return nil
+ }
+ return ErrSig
+
+ case ED25519:
+ pubkey := k.publicKeyED25519()
+ if pubkey == nil {
+ return ErrKey
+ }
+
+ if ed25519.Verify(pubkey, append(signeddata, wire...), sigbuf) {
+ return nil
+ }
+ return ErrSig
+
+ default:
+ return ErrAlg
+ }
+}
+
+// ValidityPeriod uses RFC1982 serial arithmetic to calculate
+// if a signature period is valid. If t is the zero time, the
+// current time is taken other t is. Returns true if the signature
+// is valid at the given time, otherwise returns false.
+func (rr *RRSIG) ValidityPeriod(t time.Time) bool {
+ var utc int64
+ if t.IsZero() {
+ utc = time.Now().UTC().Unix()
+ } else {
+ utc = t.UTC().Unix()
+ }
+ modi := (int64(rr.Inception) - utc) / year68
+ mode := (int64(rr.Expiration) - utc) / year68
+ ti := int64(rr.Inception) + modi*year68
+ te := int64(rr.Expiration) + mode*year68
+ return ti <= utc && utc <= te
+}
+
+// Return the signatures base64 encodedig sigdata as a byte slice.
+func (rr *RRSIG) sigBuf() []byte {
+ sigbuf, err := fromBase64([]byte(rr.Signature))
+ if err != nil {
+ return nil
+ }
+ return sigbuf
+}
+
+// publicKeyRSA returns the RSA public key from a DNSKEY record.
+func (k *DNSKEY) publicKeyRSA() *rsa.PublicKey {
+ keybuf, err := fromBase64([]byte(k.PublicKey))
+ if err != nil {
+ return nil
+ }
+
+ if len(keybuf) < 1+1+64 {
+ // Exponent must be at least 1 byte and modulus at least 64
+ return nil
+ }
+
+ // RFC 2537/3110, section 2. RSA Public KEY Resource Records
+ // Length is in the 0th byte, unless its zero, then it
+ // it in bytes 1 and 2 and its a 16 bit number
+ explen := uint16(keybuf[0])
+ keyoff := 1
+ if explen == 0 {
+ explen = uint16(keybuf[1])<<8 | uint16(keybuf[2])
+ keyoff = 3
+ }
+
+ if explen > 4 || explen == 0 || keybuf[keyoff] == 0 {
+ // Exponent larger than supported by the crypto package,
+ // empty, or contains prohibited leading zero.
+ return nil
+ }
+
+ modoff := keyoff + int(explen)
+ modlen := len(keybuf) - modoff
+ if modlen < 64 || modlen > 512 || keybuf[modoff] == 0 {
+ // Modulus is too small, large, or contains prohibited leading zero.
+ return nil
+ }
+
+ pubkey := new(rsa.PublicKey)
+
+ var expo uint64
+ // The exponent of length explen is between keyoff and modoff.
+ for _, v := range keybuf[keyoff:modoff] {
+ expo <<= 8
+ expo |= uint64(v)
+ }
+ if expo > 1<<31-1 {
+ // Larger exponent than supported by the crypto package.
+ return nil
+ }
+
+ pubkey.E = int(expo)
+ pubkey.N = new(big.Int).SetBytes(keybuf[modoff:])
+ return pubkey
+}
+
+// publicKeyECDSA returns the Curve public key from the DNSKEY record.
+func (k *DNSKEY) publicKeyECDSA() *ecdsa.PublicKey {
+ keybuf, err := fromBase64([]byte(k.PublicKey))
+ if err != nil {
+ return nil
+ }
+ pubkey := new(ecdsa.PublicKey)
+ switch k.Algorithm {
+ case ECDSAP256SHA256:
+ pubkey.Curve = elliptic.P256()
+ if len(keybuf) != 64 {
+ // wrongly encoded key
+ return nil
+ }
+ case ECDSAP384SHA384:
+ pubkey.Curve = elliptic.P384()
+ if len(keybuf) != 96 {
+ // Wrongly encoded key
+ return nil
+ }
+ }
+ pubkey.X = new(big.Int).SetBytes(keybuf[:len(keybuf)/2])
+ pubkey.Y = new(big.Int).SetBytes(keybuf[len(keybuf)/2:])
+ return pubkey
+}
+
+func (k *DNSKEY) publicKeyDSA() *dsa.PublicKey {
+ keybuf, err := fromBase64([]byte(k.PublicKey))
+ if err != nil {
+ return nil
+ }
+ if len(keybuf) < 22 {
+ return nil
+ }
+ t, keybuf := int(keybuf[0]), keybuf[1:]
+ size := 64 + t*8
+ q, keybuf := keybuf[:20], keybuf[20:]
+ if len(keybuf) != 3*size {
+ return nil
+ }
+ p, keybuf := keybuf[:size], keybuf[size:]
+ g, y := keybuf[:size], keybuf[size:]
+ pubkey := new(dsa.PublicKey)
+ pubkey.Parameters.Q = new(big.Int).SetBytes(q)
+ pubkey.Parameters.P = new(big.Int).SetBytes(p)
+ pubkey.Parameters.G = new(big.Int).SetBytes(g)
+ pubkey.Y = new(big.Int).SetBytes(y)
+ return pubkey
+}
+
+func (k *DNSKEY) publicKeyED25519() ed25519.PublicKey {
+ keybuf, err := fromBase64([]byte(k.PublicKey))
+ if err != nil {
+ return nil
+ }
+ if len(keybuf) != ed25519.PublicKeySize {
+ return nil
+ }
+ return keybuf
+}
+
+type wireSlice [][]byte
+
+func (p wireSlice) Len() int { return len(p) }
+func (p wireSlice) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
+func (p wireSlice) Less(i, j int) bool {
+ _, ioff, _ := UnpackDomainName(p[i], 0)
+ _, joff, _ := UnpackDomainName(p[j], 0)
+ return bytes.Compare(p[i][ioff+10:], p[j][joff+10:]) < 0
+}
+
+// Return the raw signature data.
+func rawSignatureData(rrset []RR, s *RRSIG) (buf []byte, err error) {
+ wires := make(wireSlice, len(rrset))
+ for i, r := range rrset {
+ r1 := r.copy()
+ h := r1.Header()
+ h.Ttl = s.OrigTtl
+ labels := SplitDomainName(h.Name)
+ // 6.2. Canonical RR Form. (4) - wildcards
+ if len(labels) > int(s.Labels) {
+ // Wildcard
+ h.Name = "*." + strings.Join(labels[len(labels)-int(s.Labels):], ".") + "."
+ }
+ // RFC 4034: 6.2. Canonical RR Form. (2) - domain name to lowercase
+ h.Name = strings.ToLower(h.Name)
+ // 6.2. Canonical RR Form. (3) - domain rdata to lowercase.
+ // NS, MD, MF, CNAME, SOA, MB, MG, MR, PTR,
+ // HINFO, MINFO, MX, RP, AFSDB, RT, SIG, PX, NXT, NAPTR, KX,
+ // SRV, DNAME, A6
+ //
+ // RFC 6840 - Clarifications and Implementation Notes for DNS Security (DNSSEC):
+ // Section 6.2 of [RFC4034] also erroneously lists HINFO as a record
+ // that needs conversion to lowercase, and twice at that. Since HINFO
+ // records contain no domain names, they are not subject to case
+ // conversion.
+ switch x := r1.(type) {
+ case *NS:
+ x.Ns = strings.ToLower(x.Ns)
+ case *MD:
+ x.Md = strings.ToLower(x.Md)
+ case *MF:
+ x.Mf = strings.ToLower(x.Mf)
+ case *CNAME:
+ x.Target = strings.ToLower(x.Target)
+ case *SOA:
+ x.Ns = strings.ToLower(x.Ns)
+ x.Mbox = strings.ToLower(x.Mbox)
+ case *MB:
+ x.Mb = strings.ToLower(x.Mb)
+ case *MG:
+ x.Mg = strings.ToLower(x.Mg)
+ case *MR:
+ x.Mr = strings.ToLower(x.Mr)
+ case *PTR:
+ x.Ptr = strings.ToLower(x.Ptr)
+ case *MINFO:
+ x.Rmail = strings.ToLower(x.Rmail)
+ x.Email = strings.ToLower(x.Email)
+ case *MX:
+ x.Mx = strings.ToLower(x.Mx)
+ case *RP:
+ x.Mbox = strings.ToLower(x.Mbox)
+ x.Txt = strings.ToLower(x.Txt)
+ case *AFSDB:
+ x.Hostname = strings.ToLower(x.Hostname)
+ case *RT:
+ x.Host = strings.ToLower(x.Host)
+ case *SIG:
+ x.SignerName = strings.ToLower(x.SignerName)
+ case *PX:
+ x.Map822 = strings.ToLower(x.Map822)
+ x.Mapx400 = strings.ToLower(x.Mapx400)
+ case *NAPTR:
+ x.Replacement = strings.ToLower(x.Replacement)
+ case *KX:
+ x.Exchanger = strings.ToLower(x.Exchanger)
+ case *SRV:
+ x.Target = strings.ToLower(x.Target)
+ case *DNAME:
+ x.Target = strings.ToLower(x.Target)
+ }
+ // 6.2. Canonical RR Form. (5) - origTTL
+ wire := make([]byte, Len(r1)+1) // +1 to be safe(r)
+ off, err1 := PackRR(r1, wire, 0, nil, false)
+ if err1 != nil {
+ return nil, err1
+ }
+ wire = wire[:off]
+ wires[i] = wire
+ }
+ sort.Sort(wires)
+ for i, wire := range wires {
+ if i > 0 && bytes.Equal(wire, wires[i-1]) {
+ continue
+ }
+ buf = append(buf, wire...)
+ }
+ return buf, nil
+}
+
+func packSigWire(sw *rrsigWireFmt, msg []byte) (int, error) {
+ // copied from zmsg.go RRSIG packing
+ off, err := packUint16(sw.TypeCovered, msg, 0)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(sw.Algorithm, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(sw.Labels, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(sw.OrigTtl, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(sw.Expiration, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(sw.Inception, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(sw.KeyTag, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = PackDomainName(sw.SignerName, msg, off, nil, false)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func packKeyWire(dw *dnskeyWireFmt, msg []byte) (int, error) {
+ // copied from zmsg.go DNSKEY packing
+ off, err := packUint16(dw.Flags, msg, 0)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(dw.Protocol, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(dw.Algorithm, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringBase64(dw.PublicKey, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
diff --git a/vendor/github.com/miekg/dns/dnssec_keygen.go b/vendor/github.com/miekg/dns/dnssec_keygen.go
new file mode 100644
index 0000000..60737e5
--- /dev/null
+++ b/vendor/github.com/miekg/dns/dnssec_keygen.go
@@ -0,0 +1,140 @@
+package dns
+
+import (
+ "crypto"
+ "crypto/ecdsa"
+ "crypto/elliptic"
+ "crypto/rand"
+ "crypto/rsa"
+ "math/big"
+
+ "golang.org/x/crypto/ed25519"
+)
+
+// Generate generates a DNSKEY of the given bit size.
+// The public part is put inside the DNSKEY record.
+// The Algorithm in the key must be set as this will define
+// what kind of DNSKEY will be generated.
+// The ECDSA algorithms imply a fixed keysize, in that case
+// bits should be set to the size of the algorithm.
+func (k *DNSKEY) Generate(bits int) (crypto.PrivateKey, error) {
+ switch k.Algorithm {
+ case RSAMD5, DSA, DSANSEC3SHA1:
+ return nil, ErrAlg
+ case RSASHA1, RSASHA256, RSASHA1NSEC3SHA1:
+ if bits < 512 || bits > 4096 {
+ return nil, ErrKeySize
+ }
+ case RSASHA512:
+ if bits < 1024 || bits > 4096 {
+ return nil, ErrKeySize
+ }
+ case ECDSAP256SHA256:
+ if bits != 256 {
+ return nil, ErrKeySize
+ }
+ case ECDSAP384SHA384:
+ if bits != 384 {
+ return nil, ErrKeySize
+ }
+ case ED25519:
+ if bits != 256 {
+ return nil, ErrKeySize
+ }
+ }
+
+ switch k.Algorithm {
+ case RSASHA1, RSASHA256, RSASHA512, RSASHA1NSEC3SHA1:
+ priv, err := rsa.GenerateKey(rand.Reader, bits)
+ if err != nil {
+ return nil, err
+ }
+ k.setPublicKeyRSA(priv.PublicKey.E, priv.PublicKey.N)
+ return priv, nil
+ case ECDSAP256SHA256, ECDSAP384SHA384:
+ var c elliptic.Curve
+ switch k.Algorithm {
+ case ECDSAP256SHA256:
+ c = elliptic.P256()
+ case ECDSAP384SHA384:
+ c = elliptic.P384()
+ }
+ priv, err := ecdsa.GenerateKey(c, rand.Reader)
+ if err != nil {
+ return nil, err
+ }
+ k.setPublicKeyECDSA(priv.PublicKey.X, priv.PublicKey.Y)
+ return priv, nil
+ case ED25519:
+ pub, priv, err := ed25519.GenerateKey(rand.Reader)
+ if err != nil {
+ return nil, err
+ }
+ k.setPublicKeyED25519(pub)
+ return priv, nil
+ default:
+ return nil, ErrAlg
+ }
+}
+
+// Set the public key (the value E and N)
+func (k *DNSKEY) setPublicKeyRSA(_E int, _N *big.Int) bool {
+ if _E == 0 || _N == nil {
+ return false
+ }
+ buf := exponentToBuf(_E)
+ buf = append(buf, _N.Bytes()...)
+ k.PublicKey = toBase64(buf)
+ return true
+}
+
+// Set the public key for Elliptic Curves
+func (k *DNSKEY) setPublicKeyECDSA(_X, _Y *big.Int) bool {
+ if _X == nil || _Y == nil {
+ return false
+ }
+ var intlen int
+ switch k.Algorithm {
+ case ECDSAP256SHA256:
+ intlen = 32
+ case ECDSAP384SHA384:
+ intlen = 48
+ }
+ k.PublicKey = toBase64(curveToBuf(_X, _Y, intlen))
+ return true
+}
+
+// Set the public key for Ed25519
+func (k *DNSKEY) setPublicKeyED25519(_K ed25519.PublicKey) bool {
+ if _K == nil {
+ return false
+ }
+ k.PublicKey = toBase64(_K)
+ return true
+}
+
+// Set the public key (the values E and N) for RSA
+// RFC 3110: Section 2. RSA Public KEY Resource Records
+func exponentToBuf(_E int) []byte {
+ var buf []byte
+ i := big.NewInt(int64(_E)).Bytes()
+ if len(i) < 256 {
+ buf = make([]byte, 1, 1+len(i))
+ buf[0] = uint8(len(i))
+ } else {
+ buf = make([]byte, 3, 3+len(i))
+ buf[0] = 0
+ buf[1] = uint8(len(i) >> 8)
+ buf[2] = uint8(len(i))
+ }
+ buf = append(buf, i...)
+ return buf
+}
+
+// Set the public key for X and Y for Curve. The two
+// values are just concatenated.
+func curveToBuf(_X, _Y *big.Int, intlen int) []byte {
+ buf := intToBytes(_X, intlen)
+ buf = append(buf, intToBytes(_Y, intlen)...)
+ return buf
+}
diff --git a/vendor/github.com/miekg/dns/dnssec_keyscan.go b/vendor/github.com/miekg/dns/dnssec_keyscan.go
new file mode 100644
index 0000000..0e6f320
--- /dev/null
+++ b/vendor/github.com/miekg/dns/dnssec_keyscan.go
@@ -0,0 +1,322 @@
+package dns
+
+import (
+ "bufio"
+ "crypto"
+ "crypto/ecdsa"
+ "crypto/rsa"
+ "io"
+ "math/big"
+ "strconv"
+ "strings"
+
+ "golang.org/x/crypto/ed25519"
+)
+
+// NewPrivateKey returns a PrivateKey by parsing the string s.
+// s should be in the same form of the BIND private key files.
+func (k *DNSKEY) NewPrivateKey(s string) (crypto.PrivateKey, error) {
+ if s == "" || s[len(s)-1] != '\n' { // We need a closing newline
+ return k.ReadPrivateKey(strings.NewReader(s+"\n"), "")
+ }
+ return k.ReadPrivateKey(strings.NewReader(s), "")
+}
+
+// ReadPrivateKey reads a private key from the io.Reader q. The string file is
+// only used in error reporting.
+// The public key must be known, because some cryptographic algorithms embed
+// the public inside the privatekey.
+func (k *DNSKEY) ReadPrivateKey(q io.Reader, file string) (crypto.PrivateKey, error) {
+ m, err := parseKey(q, file)
+ if m == nil {
+ return nil, err
+ }
+ if _, ok := m["private-key-format"]; !ok {
+ return nil, ErrPrivKey
+ }
+ if m["private-key-format"] != "v1.2" && m["private-key-format"] != "v1.3" {
+ return nil, ErrPrivKey
+ }
+ // TODO(mg): check if the pubkey matches the private key
+ algo, err := strconv.ParseUint(strings.SplitN(m["algorithm"], " ", 2)[0], 10, 8)
+ if err != nil {
+ return nil, ErrPrivKey
+ }
+ switch uint8(algo) {
+ case RSAMD5, DSA, DSANSEC3SHA1:
+ return nil, ErrAlg
+ case RSASHA1:
+ fallthrough
+ case RSASHA1NSEC3SHA1:
+ fallthrough
+ case RSASHA256:
+ fallthrough
+ case RSASHA512:
+ priv, err := readPrivateKeyRSA(m)
+ if err != nil {
+ return nil, err
+ }
+ pub := k.publicKeyRSA()
+ if pub == nil {
+ return nil, ErrKey
+ }
+ priv.PublicKey = *pub
+ return priv, nil
+ case ECCGOST:
+ return nil, ErrPrivKey
+ case ECDSAP256SHA256:
+ fallthrough
+ case ECDSAP384SHA384:
+ priv, err := readPrivateKeyECDSA(m)
+ if err != nil {
+ return nil, err
+ }
+ pub := k.publicKeyECDSA()
+ if pub == nil {
+ return nil, ErrKey
+ }
+ priv.PublicKey = *pub
+ return priv, nil
+ case ED25519:
+ return readPrivateKeyED25519(m)
+ default:
+ return nil, ErrPrivKey
+ }
+}
+
+// Read a private key (file) string and create a public key. Return the private key.
+func readPrivateKeyRSA(m map[string]string) (*rsa.PrivateKey, error) {
+ p := new(rsa.PrivateKey)
+ p.Primes = []*big.Int{nil, nil}
+ for k, v := range m {
+ switch k {
+ case "modulus", "publicexponent", "privateexponent", "prime1", "prime2":
+ v1, err := fromBase64([]byte(v))
+ if err != nil {
+ return nil, err
+ }
+ switch k {
+ case "modulus":
+ p.PublicKey.N = new(big.Int).SetBytes(v1)
+ case "publicexponent":
+ i := new(big.Int).SetBytes(v1)
+ p.PublicKey.E = int(i.Int64()) // int64 should be large enough
+ case "privateexponent":
+ p.D = new(big.Int).SetBytes(v1)
+ case "prime1":
+ p.Primes[0] = new(big.Int).SetBytes(v1)
+ case "prime2":
+ p.Primes[1] = new(big.Int).SetBytes(v1)
+ }
+ case "exponent1", "exponent2", "coefficient":
+ // not used in Go (yet)
+ case "created", "publish", "activate":
+ // not used in Go (yet)
+ }
+ }
+ return p, nil
+}
+
+func readPrivateKeyECDSA(m map[string]string) (*ecdsa.PrivateKey, error) {
+ p := new(ecdsa.PrivateKey)
+ p.D = new(big.Int)
+ // TODO: validate that the required flags are present
+ for k, v := range m {
+ switch k {
+ case "privatekey":
+ v1, err := fromBase64([]byte(v))
+ if err != nil {
+ return nil, err
+ }
+ p.D.SetBytes(v1)
+ case "created", "publish", "activate":
+ /* not used in Go (yet) */
+ }
+ }
+ return p, nil
+}
+
+func readPrivateKeyED25519(m map[string]string) (ed25519.PrivateKey, error) {
+ var p ed25519.PrivateKey
+ // TODO: validate that the required flags are present
+ for k, v := range m {
+ switch k {
+ case "privatekey":
+ p1, err := fromBase64([]byte(v))
+ if err != nil {
+ return nil, err
+ }
+ if len(p1) != ed25519.SeedSize {
+ return nil, ErrPrivKey
+ }
+ p = ed25519.NewKeyFromSeed(p1)
+ case "created", "publish", "activate":
+ /* not used in Go (yet) */
+ }
+ }
+ return p, nil
+}
+
+// parseKey reads a private key from r. It returns a map[string]string,
+// with the key-value pairs, or an error when the file is not correct.
+func parseKey(r io.Reader, file string) (map[string]string, error) {
+ m := make(map[string]string)
+ var k string
+
+ c := newKLexer(r)
+
+ for l, ok := c.Next(); ok; l, ok = c.Next() {
+ // It should alternate
+ switch l.value {
+ case zKey:
+ k = l.token
+ case zValue:
+ if k == "" {
+ return nil, &ParseError{file, "no private key seen", l}
+ }
+
+ m[strings.ToLower(k)] = l.token
+ k = ""
+ }
+ }
+
+ // Surface any read errors from r.
+ if err := c.Err(); err != nil {
+ return nil, &ParseError{file: file, err: err.Error()}
+ }
+
+ return m, nil
+}
+
+type klexer struct {
+ br io.ByteReader
+
+ readErr error
+
+ line int
+ column int
+
+ key bool
+
+ eol bool // end-of-line
+}
+
+func newKLexer(r io.Reader) *klexer {
+ br, ok := r.(io.ByteReader)
+ if !ok {
+ br = bufio.NewReaderSize(r, 1024)
+ }
+
+ return &klexer{
+ br: br,
+
+ line: 1,
+
+ key: true,
+ }
+}
+
+func (kl *klexer) Err() error {
+ if kl.readErr == io.EOF {
+ return nil
+ }
+
+ return kl.readErr
+}
+
+// readByte returns the next byte from the input
+func (kl *klexer) readByte() (byte, bool) {
+ if kl.readErr != nil {
+ return 0, false
+ }
+
+ c, err := kl.br.ReadByte()
+ if err != nil {
+ kl.readErr = err
+ return 0, false
+ }
+
+ // delay the newline handling until the next token is delivered,
+ // fixes off-by-one errors when reporting a parse error.
+ if kl.eol {
+ kl.line++
+ kl.column = 0
+ kl.eol = false
+ }
+
+ if c == '\n' {
+ kl.eol = true
+ } else {
+ kl.column++
+ }
+
+ return c, true
+}
+
+func (kl *klexer) Next() (lex, bool) {
+ var (
+ l lex
+
+ str strings.Builder
+
+ commt bool
+ )
+
+ for x, ok := kl.readByte(); ok; x, ok = kl.readByte() {
+ l.line, l.column = kl.line, kl.column
+
+ switch x {
+ case ':':
+ if commt || !kl.key {
+ break
+ }
+
+ kl.key = false
+
+ // Next token is a space, eat it
+ kl.readByte()
+
+ l.value = zKey
+ l.token = str.String()
+ return l, true
+ case ';':
+ commt = true
+ case '\n':
+ if commt {
+ // Reset a comment
+ commt = false
+ }
+
+ if kl.key && str.Len() == 0 {
+ // ignore empty lines
+ break
+ }
+
+ kl.key = true
+
+ l.value = zValue
+ l.token = str.String()
+ return l, true
+ default:
+ if commt {
+ break
+ }
+
+ str.WriteByte(x)
+ }
+ }
+
+ if kl.readErr != nil && kl.readErr != io.EOF {
+ // Don't return any tokens after a read error occurs.
+ return lex{value: zEOF}, false
+ }
+
+ if str.Len() > 0 {
+ // Send remainder
+ l.value = zValue
+ l.token = str.String()
+ return l, true
+ }
+
+ return lex{value: zEOF}, false
+}
diff --git a/vendor/github.com/miekg/dns/dnssec_privkey.go b/vendor/github.com/miekg/dns/dnssec_privkey.go
new file mode 100644
index 0000000..4493c9d
--- /dev/null
+++ b/vendor/github.com/miekg/dns/dnssec_privkey.go
@@ -0,0 +1,94 @@
+package dns
+
+import (
+ "crypto"
+ "crypto/dsa"
+ "crypto/ecdsa"
+ "crypto/rsa"
+ "math/big"
+ "strconv"
+
+ "golang.org/x/crypto/ed25519"
+)
+
+const format = "Private-key-format: v1.3\n"
+
+var bigIntOne = big.NewInt(1)
+
+// PrivateKeyString converts a PrivateKey to a string. This string has the same
+// format as the private-key-file of BIND9 (Private-key-format: v1.3).
+// It needs some info from the key (the algorithm), so its a method of the DNSKEY
+// It supports rsa.PrivateKey, ecdsa.PrivateKey and dsa.PrivateKey
+func (r *DNSKEY) PrivateKeyString(p crypto.PrivateKey) string {
+ algorithm := strconv.Itoa(int(r.Algorithm))
+ algorithm += " (" + AlgorithmToString[r.Algorithm] + ")"
+
+ switch p := p.(type) {
+ case *rsa.PrivateKey:
+ modulus := toBase64(p.PublicKey.N.Bytes())
+ e := big.NewInt(int64(p.PublicKey.E))
+ publicExponent := toBase64(e.Bytes())
+ privateExponent := toBase64(p.D.Bytes())
+ prime1 := toBase64(p.Primes[0].Bytes())
+ prime2 := toBase64(p.Primes[1].Bytes())
+ // Calculate Exponent1/2 and Coefficient as per: http://en.wikipedia.org/wiki/RSA#Using_the_Chinese_remainder_algorithm
+ // and from: http://code.google.com/p/go/issues/detail?id=987
+ p1 := new(big.Int).Sub(p.Primes[0], bigIntOne)
+ q1 := new(big.Int).Sub(p.Primes[1], bigIntOne)
+ exp1 := new(big.Int).Mod(p.D, p1)
+ exp2 := new(big.Int).Mod(p.D, q1)
+ coeff := new(big.Int).ModInverse(p.Primes[1], p.Primes[0])
+
+ exponent1 := toBase64(exp1.Bytes())
+ exponent2 := toBase64(exp2.Bytes())
+ coefficient := toBase64(coeff.Bytes())
+
+ return format +
+ "Algorithm: " + algorithm + "\n" +
+ "Modulus: " + modulus + "\n" +
+ "PublicExponent: " + publicExponent + "\n" +
+ "PrivateExponent: " + privateExponent + "\n" +
+ "Prime1: " + prime1 + "\n" +
+ "Prime2: " + prime2 + "\n" +
+ "Exponent1: " + exponent1 + "\n" +
+ "Exponent2: " + exponent2 + "\n" +
+ "Coefficient: " + coefficient + "\n"
+
+ case *ecdsa.PrivateKey:
+ var intlen int
+ switch r.Algorithm {
+ case ECDSAP256SHA256:
+ intlen = 32
+ case ECDSAP384SHA384:
+ intlen = 48
+ }
+ private := toBase64(intToBytes(p.D, intlen))
+ return format +
+ "Algorithm: " + algorithm + "\n" +
+ "PrivateKey: " + private + "\n"
+
+ case *dsa.PrivateKey:
+ T := divRoundUp(divRoundUp(p.PublicKey.Parameters.G.BitLen(), 8)-64, 8)
+ prime := toBase64(intToBytes(p.PublicKey.Parameters.P, 64+T*8))
+ subprime := toBase64(intToBytes(p.PublicKey.Parameters.Q, 20))
+ base := toBase64(intToBytes(p.PublicKey.Parameters.G, 64+T*8))
+ priv := toBase64(intToBytes(p.X, 20))
+ pub := toBase64(intToBytes(p.PublicKey.Y, 64+T*8))
+ return format +
+ "Algorithm: " + algorithm + "\n" +
+ "Prime(p): " + prime + "\n" +
+ "Subprime(q): " + subprime + "\n" +
+ "Base(g): " + base + "\n" +
+ "Private_value(x): " + priv + "\n" +
+ "Public_value(y): " + pub + "\n"
+
+ case ed25519.PrivateKey:
+ private := toBase64(p.Seed())
+ return format +
+ "Algorithm: " + algorithm + "\n" +
+ "PrivateKey: " + private + "\n"
+
+ default:
+ return ""
+ }
+}
diff --git a/vendor/github.com/miekg/dns/doc.go b/vendor/github.com/miekg/dns/doc.go
new file mode 100644
index 0000000..3318b77
--- /dev/null
+++ b/vendor/github.com/miekg/dns/doc.go
@@ -0,0 +1,268 @@
+/*
+Package dns implements a full featured interface to the Domain Name System.
+Both server- and client-side programming is supported. The package allows
+complete control over what is sent out to the DNS. The API follows the
+less-is-more principle, by presenting a small, clean interface.
+
+It supports (asynchronous) querying/replying, incoming/outgoing zone transfers,
+TSIG, EDNS0, dynamic updates, notifies and DNSSEC validation/signing.
+
+Note that domain names MUST be fully qualified before sending them, unqualified
+names in a message will result in a packing failure.
+
+Resource records are native types. They are not stored in wire format. Basic
+usage pattern for creating a new resource record:
+
+ r := new(dns.MX)
+ r.Hdr = dns.RR_Header{Name: "miek.nl.", Rrtype: dns.TypeMX, Class: dns.ClassINET, Ttl: 3600}
+ r.Preference = 10
+ r.Mx = "mx.miek.nl."
+
+Or directly from a string:
+
+ mx, err := dns.NewRR("miek.nl. 3600 IN MX 10 mx.miek.nl.")
+
+Or when the default origin (.) and TTL (3600) and class (IN) suit you:
+
+ mx, err := dns.NewRR("miek.nl MX 10 mx.miek.nl")
+
+Or even:
+
+ mx, err := dns.NewRR("$ORIGIN nl.\nmiek 1H IN MX 10 mx.miek")
+
+In the DNS messages are exchanged, these messages contain resource records
+(sets). Use pattern for creating a message:
+
+ m := new(dns.Msg)
+ m.SetQuestion("miek.nl.", dns.TypeMX)
+
+Or when not certain if the domain name is fully qualified:
+
+ m.SetQuestion(dns.Fqdn("miek.nl"), dns.TypeMX)
+
+The message m is now a message with the question section set to ask the MX
+records for the miek.nl. zone.
+
+The following is slightly more verbose, but more flexible:
+
+ m1 := new(dns.Msg)
+ m1.Id = dns.Id()
+ m1.RecursionDesired = true
+ m1.Question = make([]dns.Question, 1)
+ m1.Question[0] = dns.Question{"miek.nl.", dns.TypeMX, dns.ClassINET}
+
+After creating a message it can be sent. Basic use pattern for synchronous
+querying the DNS at a server configured on 127.0.0.1 and port 53:
+
+ c := new(dns.Client)
+ in, rtt, err := c.Exchange(m1, "127.0.0.1:53")
+
+Suppressing multiple outstanding queries (with the same question, type and
+class) is as easy as setting:
+
+ c.SingleInflight = true
+
+More advanced options are available using a net.Dialer and the corresponding API.
+For example it is possible to set a timeout, or to specify a source IP address
+and port to use for the connection:
+
+ c := new(dns.Client)
+ laddr := net.UDPAddr{
+ IP: net.ParseIP("[::1]"),
+ Port: 12345,
+ Zone: "",
+ }
+ c.Dialer := &net.Dialer{
+ Timeout: 200 * time.Millisecond,
+ LocalAddr: &laddr,
+ }
+ in, rtt, err := c.Exchange(m1, "8.8.8.8:53")
+
+If these "advanced" features are not needed, a simple UDP query can be sent,
+with:
+
+ in, err := dns.Exchange(m1, "127.0.0.1:53")
+
+When this functions returns you will get DNS message. A DNS message consists
+out of four sections.
+The question section: in.Question, the answer section: in.Answer,
+the authority section: in.Ns and the additional section: in.Extra.
+
+Each of these sections (except the Question section) contain a []RR. Basic
+use pattern for accessing the rdata of a TXT RR as the first RR in
+the Answer section:
+
+ if t, ok := in.Answer[0].(*dns.TXT); ok {
+ // do something with t.Txt
+ }
+
+Domain Name and TXT Character String Representations
+
+Both domain names and TXT character strings are converted to presentation form
+both when unpacked and when converted to strings.
+
+For TXT character strings, tabs, carriage returns and line feeds will be
+converted to \t, \r and \n respectively. Back slashes and quotations marks will
+be escaped. Bytes below 32 and above 127 will be converted to \DDD form.
+
+For domain names, in addition to the above rules brackets, periods, spaces,
+semicolons and the at symbol are escaped.
+
+DNSSEC
+
+DNSSEC (DNS Security Extension) adds a layer of security to the DNS. It uses
+public key cryptography to sign resource records. The public keys are stored in
+DNSKEY records and the signatures in RRSIG records.
+
+Requesting DNSSEC information for a zone is done by adding the DO (DNSSEC OK)
+bit to a request.
+
+ m := new(dns.Msg)
+ m.SetEdns0(4096, true)
+
+Signature generation, signature verification and key generation are all supported.
+
+DYNAMIC UPDATES
+
+Dynamic updates reuses the DNS message format, but renames three of the
+sections. Question is Zone, Answer is Prerequisite, Authority is Update, only
+the Additional is not renamed. See RFC 2136 for the gory details.
+
+You can set a rather complex set of rules for the existence of absence of
+certain resource records or names in a zone to specify if resource records
+should be added or removed. The table from RFC 2136 supplemented with the Go
+DNS function shows which functions exist to specify the prerequisites.
+
+ 3.2.4 - Table Of Metavalues Used In Prerequisite Section
+
+ CLASS TYPE RDATA Meaning Function
+ --------------------------------------------------------------
+ ANY ANY empty Name is in use dns.NameUsed
+ ANY rrset empty RRset exists (value indep) dns.RRsetUsed
+ NONE ANY empty Name is not in use dns.NameNotUsed
+ NONE rrset empty RRset does not exist dns.RRsetNotUsed
+ zone rrset rr RRset exists (value dep) dns.Used
+
+The prerequisite section can also be left empty. If you have decided on the
+prerequisites you can tell what RRs should be added or deleted. The next table
+shows the options you have and what functions to call.
+
+ 3.4.2.6 - Table Of Metavalues Used In Update Section
+
+ CLASS TYPE RDATA Meaning Function
+ ---------------------------------------------------------------
+ ANY ANY empty Delete all RRsets from name dns.RemoveName
+ ANY rrset empty Delete an RRset dns.RemoveRRset
+ NONE rrset rr Delete an RR from RRset dns.Remove
+ zone rrset rr Add to an RRset dns.Insert
+
+TRANSACTION SIGNATURE
+
+An TSIG or transaction signature adds a HMAC TSIG record to each message sent.
+The supported algorithms include: HmacMD5, HmacSHA1, HmacSHA256 and HmacSHA512.
+
+Basic use pattern when querying with a TSIG name "axfr." (note that these key names
+must be fully qualified - as they are domain names) and the base64 secret
+"so6ZGir4GPAqINNh9U5c3A==":
+
+If an incoming message contains a TSIG record it MUST be the last record in
+the additional section (RFC2845 3.2). This means that you should make the
+call to SetTsig last, right before executing the query. If you make any
+changes to the RRset after calling SetTsig() the signature will be incorrect.
+
+ c := new(dns.Client)
+ c.TsigSecret = map[string]string{"axfr.": "so6ZGir4GPAqINNh9U5c3A=="}
+ m := new(dns.Msg)
+ m.SetQuestion("miek.nl.", dns.TypeMX)
+ m.SetTsig("axfr.", dns.HmacMD5, 300, time.Now().Unix())
+ ...
+ // When sending the TSIG RR is calculated and filled in before sending
+
+When requesting an zone transfer (almost all TSIG usage is when requesting zone
+transfers), with TSIG, this is the basic use pattern. In this example we
+request an AXFR for miek.nl. with TSIG key named "axfr." and secret
+"so6ZGir4GPAqINNh9U5c3A==" and using the server 176.58.119.54:
+
+ t := new(dns.Transfer)
+ m := new(dns.Msg)
+ t.TsigSecret = map[string]string{"axfr.": "so6ZGir4GPAqINNh9U5c3A=="}
+ m.SetAxfr("miek.nl.")
+ m.SetTsig("axfr.", dns.HmacMD5, 300, time.Now().Unix())
+ c, err := t.In(m, "176.58.119.54:53")
+ for r := range c { ... }
+
+You can now read the records from the transfer as they come in. Each envelope
+is checked with TSIG. If something is not correct an error is returned.
+
+Basic use pattern validating and replying to a message that has TSIG set.
+
+ server := &dns.Server{Addr: ":53", Net: "udp"}
+ server.TsigSecret = map[string]string{"axfr.": "so6ZGir4GPAqINNh9U5c3A=="}
+ go server.ListenAndServe()
+ dns.HandleFunc(".", handleRequest)
+
+ func handleRequest(w dns.ResponseWriter, r *dns.Msg) {
+ m := new(dns.Msg)
+ m.SetReply(r)
+ if r.IsTsig() != nil {
+ if w.TsigStatus() == nil {
+ // *Msg r has an TSIG record and it was validated
+ m.SetTsig("axfr.", dns.HmacMD5, 300, time.Now().Unix())
+ } else {
+ // *Msg r has an TSIG records and it was not valided
+ }
+ }
+ w.WriteMsg(m)
+ }
+
+PRIVATE RRS
+
+RFC 6895 sets aside a range of type codes for private use. This range is 65,280
+- 65,534 (0xFF00 - 0xFFFE). When experimenting with new Resource Records these
+can be used, before requesting an official type code from IANA.
+
+See https://miek.nl/2014/september/21/idn-and-private-rr-in-go-dns/ for more
+information.
+
+EDNS0
+
+EDNS0 is an extension mechanism for the DNS defined in RFC 2671 and updated by
+RFC 6891. It defines an new RR type, the OPT RR, which is then completely
+abused.
+
+Basic use pattern for creating an (empty) OPT RR:
+
+ o := new(dns.OPT)
+ o.Hdr.Name = "." // MUST be the root zone, per definition.
+ o.Hdr.Rrtype = dns.TypeOPT
+
+The rdata of an OPT RR consists out of a slice of EDNS0 (RFC 6891) interfaces.
+Currently only a few have been standardized: EDNS0_NSID (RFC 5001) and
+EDNS0_SUBNET (RFC 7871). Note that these options may be combined in an OPT RR.
+Basic use pattern for a server to check if (and which) options are set:
+
+ // o is a dns.OPT
+ for _, s := range o.Option {
+ switch e := s.(type) {
+ case *dns.EDNS0_NSID:
+ // do stuff with e.Nsid
+ case *dns.EDNS0_SUBNET:
+ // access e.Family, e.Address, etc.
+ }
+ }
+
+SIG(0)
+
+From RFC 2931:
+
+ SIG(0) provides protection for DNS transactions and requests ....
+ ... protection for glue records, DNS requests, protection for message headers
+ on requests and responses, and protection of the overall integrity of a response.
+
+It works like TSIG, except that SIG(0) uses public key cryptography, instead of
+the shared secret approach in TSIG. Supported algorithms: DSA, ECDSAP256SHA256,
+ECDSAP384SHA384, RSASHA1, RSASHA256 and RSASHA512.
+
+Signing subsequent messages in multi-message sessions is not implemented.
+*/
+package dns
diff --git a/vendor/github.com/miekg/dns/duplicate.go b/vendor/github.com/miekg/dns/duplicate.go
new file mode 100644
index 0000000..49e6940
--- /dev/null
+++ b/vendor/github.com/miekg/dns/duplicate.go
@@ -0,0 +1,38 @@
+package dns
+
+//go:generate go run duplicate_generate.go
+
+// IsDuplicate checks of r1 and r2 are duplicates of each other, excluding the TTL.
+// So this means the header data is equal *and* the RDATA is the same. Return true
+// is so, otherwise false.
+// It's a protocol violation to have identical RRs in a message.
+func IsDuplicate(r1, r2 RR) bool {
+ // Check whether the record header is identical.
+ if !r1.Header().isDuplicate(r2.Header()) {
+ return false
+ }
+
+ // Check whether the RDATA is identical.
+ return r1.isDuplicate(r2)
+}
+
+func (r1 *RR_Header) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*RR_Header)
+ if !ok {
+ return false
+ }
+ if r1.Class != r2.Class {
+ return false
+ }
+ if r1.Rrtype != r2.Rrtype {
+ return false
+ }
+ if !isDuplicateName(r1.Name, r2.Name) {
+ return false
+ }
+ // ignore TTL
+ return true
+}
+
+// isDuplicateName checks if the domain names s1 and s2 are equal.
+func isDuplicateName(s1, s2 string) bool { return equal(s1, s2) }
diff --git a/vendor/github.com/miekg/dns/edns.go b/vendor/github.com/miekg/dns/edns.go
new file mode 100644
index 0000000..04808d5
--- /dev/null
+++ b/vendor/github.com/miekg/dns/edns.go
@@ -0,0 +1,675 @@
+package dns
+
+import (
+ "encoding/binary"
+ "encoding/hex"
+ "errors"
+ "fmt"
+ "net"
+ "strconv"
+)
+
+// EDNS0 Option codes.
+const (
+ EDNS0LLQ = 0x1 // long lived queries: http://tools.ietf.org/html/draft-sekar-dns-llq-01
+ EDNS0UL = 0x2 // update lease draft: http://files.dns-sd.org/draft-sekar-dns-ul.txt
+ EDNS0NSID = 0x3 // nsid (See RFC 5001)
+ EDNS0DAU = 0x5 // DNSSEC Algorithm Understood
+ EDNS0DHU = 0x6 // DS Hash Understood
+ EDNS0N3U = 0x7 // NSEC3 Hash Understood
+ EDNS0SUBNET = 0x8 // client-subnet (See RFC 7871)
+ EDNS0EXPIRE = 0x9 // EDNS0 expire
+ EDNS0COOKIE = 0xa // EDNS0 Cookie
+ EDNS0TCPKEEPALIVE = 0xb // EDNS0 tcp keep alive (See RFC 7828)
+ EDNS0PADDING = 0xc // EDNS0 padding (See RFC 7830)
+ EDNS0LOCALSTART = 0xFDE9 // Beginning of range reserved for local/experimental use (See RFC 6891)
+ EDNS0LOCALEND = 0xFFFE // End of range reserved for local/experimental use (See RFC 6891)
+ _DO = 1 << 15 // DNSSEC OK
+)
+
+// OPT is the EDNS0 RR appended to messages to convey extra (meta) information.
+// See RFC 6891.
+type OPT struct {
+ Hdr RR_Header
+ Option []EDNS0 `dns:"opt"`
+}
+
+func (rr *OPT) String() string {
+ s := "\n;; OPT PSEUDOSECTION:\n; EDNS: version " + strconv.Itoa(int(rr.Version())) + "; "
+ if rr.Do() {
+ s += "flags: do; "
+ } else {
+ s += "flags: ; "
+ }
+ s += "udp: " + strconv.Itoa(int(rr.UDPSize()))
+
+ for _, o := range rr.Option {
+ switch o.(type) {
+ case *EDNS0_NSID:
+ s += "\n; NSID: " + o.String()
+ h, e := o.pack()
+ var r string
+ if e == nil {
+ for _, c := range h {
+ r += "(" + string(c) + ")"
+ }
+ s += " " + r
+ }
+ case *EDNS0_SUBNET:
+ s += "\n; SUBNET: " + o.String()
+ case *EDNS0_COOKIE:
+ s += "\n; COOKIE: " + o.String()
+ case *EDNS0_UL:
+ s += "\n; UPDATE LEASE: " + o.String()
+ case *EDNS0_LLQ:
+ s += "\n; LONG LIVED QUERIES: " + o.String()
+ case *EDNS0_DAU:
+ s += "\n; DNSSEC ALGORITHM UNDERSTOOD: " + o.String()
+ case *EDNS0_DHU:
+ s += "\n; DS HASH UNDERSTOOD: " + o.String()
+ case *EDNS0_N3U:
+ s += "\n; NSEC3 HASH UNDERSTOOD: " + o.String()
+ case *EDNS0_LOCAL:
+ s += "\n; LOCAL OPT: " + o.String()
+ case *EDNS0_PADDING:
+ s += "\n; PADDING: " + o.String()
+ }
+ }
+ return s
+}
+
+func (rr *OPT) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ for _, o := range rr.Option {
+ l += 4 // Account for 2-byte option code and 2-byte option length.
+ lo, _ := o.pack()
+ l += len(lo)
+ }
+ return l
+}
+
+func (rr *OPT) parse(c *zlexer, origin string) *ParseError {
+ panic("dns: internal error: parse should never be called on OPT")
+}
+
+func (r1 *OPT) isDuplicate(r2 RR) bool { return false }
+
+// return the old value -> delete SetVersion?
+
+// Version returns the EDNS version used. Only zero is defined.
+func (rr *OPT) Version() uint8 {
+ return uint8(rr.Hdr.Ttl & 0x00FF0000 >> 16)
+}
+
+// SetVersion sets the version of EDNS. This is usually zero.
+func (rr *OPT) SetVersion(v uint8) {
+ rr.Hdr.Ttl = rr.Hdr.Ttl&0xFF00FFFF | uint32(v)<<16
+}
+
+// ExtendedRcode returns the EDNS extended RCODE field (the upper 8 bits of the TTL).
+func (rr *OPT) ExtendedRcode() int {
+ return int(rr.Hdr.Ttl&0xFF000000>>24) << 4
+}
+
+// SetExtendedRcode sets the EDNS extended RCODE field.
+//
+// If the RCODE is not an extended RCODE, will reset the extended RCODE field to 0.
+func (rr *OPT) SetExtendedRcode(v uint16) {
+ rr.Hdr.Ttl = rr.Hdr.Ttl&0x00FFFFFF | uint32(v>>4)<<24
+}
+
+// UDPSize returns the UDP buffer size.
+func (rr *OPT) UDPSize() uint16 {
+ return rr.Hdr.Class
+}
+
+// SetUDPSize sets the UDP buffer size.
+func (rr *OPT) SetUDPSize(size uint16) {
+ rr.Hdr.Class = size
+}
+
+// Do returns the value of the DO (DNSSEC OK) bit.
+func (rr *OPT) Do() bool {
+ return rr.Hdr.Ttl&_DO == _DO
+}
+
+// SetDo sets the DO (DNSSEC OK) bit.
+// If we pass an argument, set the DO bit to that value.
+// It is possible to pass 2 or more arguments. Any arguments after the 1st is silently ignored.
+func (rr *OPT) SetDo(do ...bool) {
+ if len(do) == 1 {
+ if do[0] {
+ rr.Hdr.Ttl |= _DO
+ } else {
+ rr.Hdr.Ttl &^= _DO
+ }
+ } else {
+ rr.Hdr.Ttl |= _DO
+ }
+}
+
+// EDNS0 defines an EDNS0 Option. An OPT RR can have multiple options appended to it.
+type EDNS0 interface {
+ // Option returns the option code for the option.
+ Option() uint16
+ // pack returns the bytes of the option data.
+ pack() ([]byte, error)
+ // unpack sets the data as found in the buffer. Is also sets
+ // the length of the slice as the length of the option data.
+ unpack([]byte) error
+ // String returns the string representation of the option.
+ String() string
+ // copy returns a deep-copy of the option.
+ copy() EDNS0
+}
+
+// EDNS0_NSID option is used to retrieve a nameserver
+// identifier. When sending a request Nsid must be set to the empty string
+// The identifier is an opaque string encoded as hex.
+// Basic use pattern for creating an nsid option:
+//
+// o := new(dns.OPT)
+// o.Hdr.Name = "."
+// o.Hdr.Rrtype = dns.TypeOPT
+// e := new(dns.EDNS0_NSID)
+// e.Code = dns.EDNS0NSID
+// e.Nsid = "AA"
+// o.Option = append(o.Option, e)
+type EDNS0_NSID struct {
+ Code uint16 // Always EDNS0NSID
+ Nsid string // This string needs to be hex encoded
+}
+
+func (e *EDNS0_NSID) pack() ([]byte, error) {
+ h, err := hex.DecodeString(e.Nsid)
+ if err != nil {
+ return nil, err
+ }
+ return h, nil
+}
+
+// Option implements the EDNS0 interface.
+func (e *EDNS0_NSID) Option() uint16 { return EDNS0NSID } // Option returns the option code.
+func (e *EDNS0_NSID) unpack(b []byte) error { e.Nsid = hex.EncodeToString(b); return nil }
+func (e *EDNS0_NSID) String() string { return e.Nsid }
+func (e *EDNS0_NSID) copy() EDNS0 { return &EDNS0_NSID{e.Code, e.Nsid} }
+
+// EDNS0_SUBNET is the subnet option that is used to give the remote nameserver
+// an idea of where the client lives. See RFC 7871. It can then give back a different
+// answer depending on the location or network topology.
+// Basic use pattern for creating an subnet option:
+//
+// o := new(dns.OPT)
+// o.Hdr.Name = "."
+// o.Hdr.Rrtype = dns.TypeOPT
+// e := new(dns.EDNS0_SUBNET)
+// e.Code = dns.EDNS0SUBNET
+// e.Family = 1 // 1 for IPv4 source address, 2 for IPv6
+// e.SourceNetmask = 32 // 32 for IPV4, 128 for IPv6
+// e.SourceScope = 0
+// e.Address = net.ParseIP("127.0.0.1").To4() // for IPv4
+// // e.Address = net.ParseIP("2001:7b8:32a::2") // for IPV6
+// o.Option = append(o.Option, e)
+//
+// This code will parse all the available bits when unpacking (up to optlen).
+// When packing it will apply SourceNetmask. If you need more advanced logic,
+// patches welcome and good luck.
+type EDNS0_SUBNET struct {
+ Code uint16 // Always EDNS0SUBNET
+ Family uint16 // 1 for IP, 2 for IP6
+ SourceNetmask uint8
+ SourceScope uint8
+ Address net.IP
+}
+
+// Option implements the EDNS0 interface.
+func (e *EDNS0_SUBNET) Option() uint16 { return EDNS0SUBNET }
+
+func (e *EDNS0_SUBNET) pack() ([]byte, error) {
+ b := make([]byte, 4)
+ binary.BigEndian.PutUint16(b[0:], e.Family)
+ b[2] = e.SourceNetmask
+ b[3] = e.SourceScope
+ switch e.Family {
+ case 0:
+ // "dig" sets AddressFamily to 0 if SourceNetmask is also 0
+ // We might don't need to complain either
+ if e.SourceNetmask != 0 {
+ return nil, errors.New("dns: bad address family")
+ }
+ case 1:
+ if e.SourceNetmask > net.IPv4len*8 {
+ return nil, errors.New("dns: bad netmask")
+ }
+ if len(e.Address.To4()) != net.IPv4len {
+ return nil, errors.New("dns: bad address")
+ }
+ ip := e.Address.To4().Mask(net.CIDRMask(int(e.SourceNetmask), net.IPv4len*8))
+ needLength := (e.SourceNetmask + 8 - 1) / 8 // division rounding up
+ b = append(b, ip[:needLength]...)
+ case 2:
+ if e.SourceNetmask > net.IPv6len*8 {
+ return nil, errors.New("dns: bad netmask")
+ }
+ if len(e.Address) != net.IPv6len {
+ return nil, errors.New("dns: bad address")
+ }
+ ip := e.Address.Mask(net.CIDRMask(int(e.SourceNetmask), net.IPv6len*8))
+ needLength := (e.SourceNetmask + 8 - 1) / 8 // division rounding up
+ b = append(b, ip[:needLength]...)
+ default:
+ return nil, errors.New("dns: bad address family")
+ }
+ return b, nil
+}
+
+func (e *EDNS0_SUBNET) unpack(b []byte) error {
+ if len(b) < 4 {
+ return ErrBuf
+ }
+ e.Family = binary.BigEndian.Uint16(b)
+ e.SourceNetmask = b[2]
+ e.SourceScope = b[3]
+ switch e.Family {
+ case 0:
+ // "dig" sets AddressFamily to 0 if SourceNetmask is also 0
+ // It's okay to accept such a packet
+ if e.SourceNetmask != 0 {
+ return errors.New("dns: bad address family")
+ }
+ e.Address = net.IPv4(0, 0, 0, 0)
+ case 1:
+ if e.SourceNetmask > net.IPv4len*8 || e.SourceScope > net.IPv4len*8 {
+ return errors.New("dns: bad netmask")
+ }
+ addr := make(net.IP, net.IPv4len)
+ copy(addr, b[4:])
+ e.Address = addr.To16()
+ case 2:
+ if e.SourceNetmask > net.IPv6len*8 || e.SourceScope > net.IPv6len*8 {
+ return errors.New("dns: bad netmask")
+ }
+ addr := make(net.IP, net.IPv6len)
+ copy(addr, b[4:])
+ e.Address = addr
+ default:
+ return errors.New("dns: bad address family")
+ }
+ return nil
+}
+
+func (e *EDNS0_SUBNET) String() (s string) {
+ if e.Address == nil {
+ s = ""
+ } else if e.Address.To4() != nil {
+ s = e.Address.String()
+ } else {
+ s = "[" + e.Address.String() + "]"
+ }
+ s += "/" + strconv.Itoa(int(e.SourceNetmask)) + "/" + strconv.Itoa(int(e.SourceScope))
+ return
+}
+
+func (e *EDNS0_SUBNET) copy() EDNS0 {
+ return &EDNS0_SUBNET{
+ e.Code,
+ e.Family,
+ e.SourceNetmask,
+ e.SourceScope,
+ e.Address,
+ }
+}
+
+// The EDNS0_COOKIE option is used to add a DNS Cookie to a message.
+//
+// o := new(dns.OPT)
+// o.Hdr.Name = "."
+// o.Hdr.Rrtype = dns.TypeOPT
+// e := new(dns.EDNS0_COOKIE)
+// e.Code = dns.EDNS0COOKIE
+// e.Cookie = "24a5ac.."
+// o.Option = append(o.Option, e)
+//
+// The Cookie field consists out of a client cookie (RFC 7873 Section 4), that is
+// always 8 bytes. It may then optionally be followed by the server cookie. The server
+// cookie is of variable length, 8 to a maximum of 32 bytes. In other words:
+//
+// cCookie := o.Cookie[:16]
+// sCookie := o.Cookie[16:]
+//
+// There is no guarantee that the Cookie string has a specific length.
+type EDNS0_COOKIE struct {
+ Code uint16 // Always EDNS0COOKIE
+ Cookie string // Hex-encoded cookie data
+}
+
+func (e *EDNS0_COOKIE) pack() ([]byte, error) {
+ h, err := hex.DecodeString(e.Cookie)
+ if err != nil {
+ return nil, err
+ }
+ return h, nil
+}
+
+// Option implements the EDNS0 interface.
+func (e *EDNS0_COOKIE) Option() uint16 { return EDNS0COOKIE }
+func (e *EDNS0_COOKIE) unpack(b []byte) error { e.Cookie = hex.EncodeToString(b); return nil }
+func (e *EDNS0_COOKIE) String() string { return e.Cookie }
+func (e *EDNS0_COOKIE) copy() EDNS0 { return &EDNS0_COOKIE{e.Code, e.Cookie} }
+
+// The EDNS0_UL (Update Lease) (draft RFC) option is used to tell the server to set
+// an expiration on an update RR. This is helpful for clients that cannot clean
+// up after themselves. This is a draft RFC and more information can be found at
+// https://tools.ietf.org/html/draft-sekar-dns-ul-02
+//
+// o := new(dns.OPT)
+// o.Hdr.Name = "."
+// o.Hdr.Rrtype = dns.TypeOPT
+// e := new(dns.EDNS0_UL)
+// e.Code = dns.EDNS0UL
+// e.Lease = 120 // in seconds
+// o.Option = append(o.Option, e)
+type EDNS0_UL struct {
+ Code uint16 // Always EDNS0UL
+ Lease uint32
+ KeyLease uint32
+}
+
+// Option implements the EDNS0 interface.
+func (e *EDNS0_UL) Option() uint16 { return EDNS0UL }
+func (e *EDNS0_UL) String() string { return fmt.Sprintf("%d %d", e.Lease, e.KeyLease) }
+func (e *EDNS0_UL) copy() EDNS0 { return &EDNS0_UL{e.Code, e.Lease, e.KeyLease} }
+
+// Copied: http://golang.org/src/pkg/net/dnsmsg.go
+func (e *EDNS0_UL) pack() ([]byte, error) {
+ var b []byte
+ if e.KeyLease == 0 {
+ b = make([]byte, 4)
+ } else {
+ b = make([]byte, 8)
+ binary.BigEndian.PutUint32(b[4:], e.KeyLease)
+ }
+ binary.BigEndian.PutUint32(b, e.Lease)
+ return b, nil
+}
+
+func (e *EDNS0_UL) unpack(b []byte) error {
+ switch len(b) {
+ case 4:
+ e.KeyLease = 0
+ case 8:
+ e.KeyLease = binary.BigEndian.Uint32(b[4:])
+ default:
+ return ErrBuf
+ }
+ e.Lease = binary.BigEndian.Uint32(b)
+ return nil
+}
+
+// EDNS0_LLQ stands for Long Lived Queries: http://tools.ietf.org/html/draft-sekar-dns-llq-01
+// Implemented for completeness, as the EDNS0 type code is assigned.
+type EDNS0_LLQ struct {
+ Code uint16 // Always EDNS0LLQ
+ Version uint16
+ Opcode uint16
+ Error uint16
+ Id uint64
+ LeaseLife uint32
+}
+
+// Option implements the EDNS0 interface.
+func (e *EDNS0_LLQ) Option() uint16 { return EDNS0LLQ }
+
+func (e *EDNS0_LLQ) pack() ([]byte, error) {
+ b := make([]byte, 18)
+ binary.BigEndian.PutUint16(b[0:], e.Version)
+ binary.BigEndian.PutUint16(b[2:], e.Opcode)
+ binary.BigEndian.PutUint16(b[4:], e.Error)
+ binary.BigEndian.PutUint64(b[6:], e.Id)
+ binary.BigEndian.PutUint32(b[14:], e.LeaseLife)
+ return b, nil
+}
+
+func (e *EDNS0_LLQ) unpack(b []byte) error {
+ if len(b) < 18 {
+ return ErrBuf
+ }
+ e.Version = binary.BigEndian.Uint16(b[0:])
+ e.Opcode = binary.BigEndian.Uint16(b[2:])
+ e.Error = binary.BigEndian.Uint16(b[4:])
+ e.Id = binary.BigEndian.Uint64(b[6:])
+ e.LeaseLife = binary.BigEndian.Uint32(b[14:])
+ return nil
+}
+
+func (e *EDNS0_LLQ) String() string {
+ s := strconv.FormatUint(uint64(e.Version), 10) + " " + strconv.FormatUint(uint64(e.Opcode), 10) +
+ " " + strconv.FormatUint(uint64(e.Error), 10) + " " + strconv.FormatUint(e.Id, 10) +
+ " " + strconv.FormatUint(uint64(e.LeaseLife), 10)
+ return s
+}
+func (e *EDNS0_LLQ) copy() EDNS0 {
+ return &EDNS0_LLQ{e.Code, e.Version, e.Opcode, e.Error, e.Id, e.LeaseLife}
+}
+
+// EDNS0_DUA implements the EDNS0 "DNSSEC Algorithm Understood" option. See RFC 6975.
+type EDNS0_DAU struct {
+ Code uint16 // Always EDNS0DAU
+ AlgCode []uint8
+}
+
+// Option implements the EDNS0 interface.
+func (e *EDNS0_DAU) Option() uint16 { return EDNS0DAU }
+func (e *EDNS0_DAU) pack() ([]byte, error) { return e.AlgCode, nil }
+func (e *EDNS0_DAU) unpack(b []byte) error { e.AlgCode = b; return nil }
+
+func (e *EDNS0_DAU) String() string {
+ s := ""
+ for _, alg := range e.AlgCode {
+ if a, ok := AlgorithmToString[alg]; ok {
+ s += " " + a
+ } else {
+ s += " " + strconv.Itoa(int(alg))
+ }
+ }
+ return s
+}
+func (e *EDNS0_DAU) copy() EDNS0 { return &EDNS0_DAU{e.Code, e.AlgCode} }
+
+// EDNS0_DHU implements the EDNS0 "DS Hash Understood" option. See RFC 6975.
+type EDNS0_DHU struct {
+ Code uint16 // Always EDNS0DHU
+ AlgCode []uint8
+}
+
+// Option implements the EDNS0 interface.
+func (e *EDNS0_DHU) Option() uint16 { return EDNS0DHU }
+func (e *EDNS0_DHU) pack() ([]byte, error) { return e.AlgCode, nil }
+func (e *EDNS0_DHU) unpack(b []byte) error { e.AlgCode = b; return nil }
+
+func (e *EDNS0_DHU) String() string {
+ s := ""
+ for _, alg := range e.AlgCode {
+ if a, ok := HashToString[alg]; ok {
+ s += " " + a
+ } else {
+ s += " " + strconv.Itoa(int(alg))
+ }
+ }
+ return s
+}
+func (e *EDNS0_DHU) copy() EDNS0 { return &EDNS0_DHU{e.Code, e.AlgCode} }
+
+// EDNS0_N3U implements the EDNS0 "NSEC3 Hash Understood" option. See RFC 6975.
+type EDNS0_N3U struct {
+ Code uint16 // Always EDNS0N3U
+ AlgCode []uint8
+}
+
+// Option implements the EDNS0 interface.
+func (e *EDNS0_N3U) Option() uint16 { return EDNS0N3U }
+func (e *EDNS0_N3U) pack() ([]byte, error) { return e.AlgCode, nil }
+func (e *EDNS0_N3U) unpack(b []byte) error { e.AlgCode = b; return nil }
+
+func (e *EDNS0_N3U) String() string {
+ // Re-use the hash map
+ s := ""
+ for _, alg := range e.AlgCode {
+ if a, ok := HashToString[alg]; ok {
+ s += " " + a
+ } else {
+ s += " " + strconv.Itoa(int(alg))
+ }
+ }
+ return s
+}
+func (e *EDNS0_N3U) copy() EDNS0 { return &EDNS0_N3U{e.Code, e.AlgCode} }
+
+// EDNS0_EXPIRE implementes the EDNS0 option as described in RFC 7314.
+type EDNS0_EXPIRE struct {
+ Code uint16 // Always EDNS0EXPIRE
+ Expire uint32
+}
+
+// Option implements the EDNS0 interface.
+func (e *EDNS0_EXPIRE) Option() uint16 { return EDNS0EXPIRE }
+func (e *EDNS0_EXPIRE) String() string { return strconv.FormatUint(uint64(e.Expire), 10) }
+func (e *EDNS0_EXPIRE) copy() EDNS0 { return &EDNS0_EXPIRE{e.Code, e.Expire} }
+
+func (e *EDNS0_EXPIRE) pack() ([]byte, error) {
+ b := make([]byte, 4)
+ binary.BigEndian.PutUint32(b, e.Expire)
+ return b, nil
+}
+
+func (e *EDNS0_EXPIRE) unpack(b []byte) error {
+ if len(b) == 0 {
+ // zero-length EXPIRE query, see RFC 7314 Section 2
+ return nil
+ }
+ if len(b) < 4 {
+ return ErrBuf
+ }
+ e.Expire = binary.BigEndian.Uint32(b)
+ return nil
+}
+
+// The EDNS0_LOCAL option is used for local/experimental purposes. The option
+// code is recommended to be within the range [EDNS0LOCALSTART, EDNS0LOCALEND]
+// (RFC6891), although any unassigned code can actually be used. The content of
+// the option is made available in Data, unaltered.
+// Basic use pattern for creating a local option:
+//
+// o := new(dns.OPT)
+// o.Hdr.Name = "."
+// o.Hdr.Rrtype = dns.TypeOPT
+// e := new(dns.EDNS0_LOCAL)
+// e.Code = dns.EDNS0LOCALSTART
+// e.Data = []byte{72, 82, 74}
+// o.Option = append(o.Option, e)
+type EDNS0_LOCAL struct {
+ Code uint16
+ Data []byte
+}
+
+// Option implements the EDNS0 interface.
+func (e *EDNS0_LOCAL) Option() uint16 { return e.Code }
+func (e *EDNS0_LOCAL) String() string {
+ return strconv.FormatInt(int64(e.Code), 10) + ":0x" + hex.EncodeToString(e.Data)
+}
+func (e *EDNS0_LOCAL) copy() EDNS0 {
+ b := make([]byte, len(e.Data))
+ copy(b, e.Data)
+ return &EDNS0_LOCAL{e.Code, b}
+}
+
+func (e *EDNS0_LOCAL) pack() ([]byte, error) {
+ b := make([]byte, len(e.Data))
+ copied := copy(b, e.Data)
+ if copied != len(e.Data) {
+ return nil, ErrBuf
+ }
+ return b, nil
+}
+
+func (e *EDNS0_LOCAL) unpack(b []byte) error {
+ e.Data = make([]byte, len(b))
+ copied := copy(e.Data, b)
+ if copied != len(b) {
+ return ErrBuf
+ }
+ return nil
+}
+
+// EDNS0_TCP_KEEPALIVE is an EDNS0 option that instructs the server to keep
+// the TCP connection alive. See RFC 7828.
+type EDNS0_TCP_KEEPALIVE struct {
+ Code uint16 // Always EDNSTCPKEEPALIVE
+ Length uint16 // the value 0 if the TIMEOUT is omitted, the value 2 if it is present;
+ Timeout uint16 // an idle timeout value for the TCP connection, specified in units of 100 milliseconds, encoded in network byte order.
+}
+
+// Option implements the EDNS0 interface.
+func (e *EDNS0_TCP_KEEPALIVE) Option() uint16 { return EDNS0TCPKEEPALIVE }
+
+func (e *EDNS0_TCP_KEEPALIVE) pack() ([]byte, error) {
+ if e.Timeout != 0 && e.Length != 2 {
+ return nil, errors.New("dns: timeout specified but length is not 2")
+ }
+ if e.Timeout == 0 && e.Length != 0 {
+ return nil, errors.New("dns: timeout not specified but length is not 0")
+ }
+ b := make([]byte, 4+e.Length)
+ binary.BigEndian.PutUint16(b[0:], e.Code)
+ binary.BigEndian.PutUint16(b[2:], e.Length)
+ if e.Length == 2 {
+ binary.BigEndian.PutUint16(b[4:], e.Timeout)
+ }
+ return b, nil
+}
+
+func (e *EDNS0_TCP_KEEPALIVE) unpack(b []byte) error {
+ if len(b) < 4 {
+ return ErrBuf
+ }
+ e.Length = binary.BigEndian.Uint16(b[2:4])
+ if e.Length != 0 && e.Length != 2 {
+ return errors.New("dns: length mismatch, want 0/2 but got " + strconv.FormatUint(uint64(e.Length), 10))
+ }
+ if e.Length == 2 {
+ if len(b) < 6 {
+ return ErrBuf
+ }
+ e.Timeout = binary.BigEndian.Uint16(b[4:6])
+ }
+ return nil
+}
+
+func (e *EDNS0_TCP_KEEPALIVE) String() (s string) {
+ s = "use tcp keep-alive"
+ if e.Length == 0 {
+ s += ", timeout omitted"
+ } else {
+ s += fmt.Sprintf(", timeout %dms", e.Timeout*100)
+ }
+ return
+}
+func (e *EDNS0_TCP_KEEPALIVE) copy() EDNS0 { return &EDNS0_TCP_KEEPALIVE{e.Code, e.Length, e.Timeout} }
+
+// EDNS0_PADDING option is used to add padding to a request/response. The default
+// value of padding SHOULD be 0x0 but other values MAY be used, for instance if
+// compression is applied before encryption which may break signatures.
+type EDNS0_PADDING struct {
+ Padding []byte
+}
+
+// Option implements the EDNS0 interface.
+func (e *EDNS0_PADDING) Option() uint16 { return EDNS0PADDING }
+func (e *EDNS0_PADDING) pack() ([]byte, error) { return e.Padding, nil }
+func (e *EDNS0_PADDING) unpack(b []byte) error { e.Padding = b; return nil }
+func (e *EDNS0_PADDING) String() string { return fmt.Sprintf("%0X", e.Padding) }
+func (e *EDNS0_PADDING) copy() EDNS0 {
+ b := make([]byte, len(e.Padding))
+ copy(b, e.Padding)
+ return &EDNS0_PADDING{b}
+}
diff --git a/vendor/github.com/miekg/dns/format.go b/vendor/github.com/miekg/dns/format.go
new file mode 100644
index 0000000..0ec79f2
--- /dev/null
+++ b/vendor/github.com/miekg/dns/format.go
@@ -0,0 +1,93 @@
+package dns
+
+import (
+ "net"
+ "reflect"
+ "strconv"
+)
+
+// NumField returns the number of rdata fields r has.
+func NumField(r RR) int {
+ return reflect.ValueOf(r).Elem().NumField() - 1 // Remove RR_Header
+}
+
+// Field returns the rdata field i as a string. Fields are indexed starting from 1.
+// RR types that holds slice data, for instance the NSEC type bitmap will return a single
+// string where the types are concatenated using a space.
+// Accessing non existing fields will cause a panic.
+func Field(r RR, i int) string {
+ if i == 0 {
+ return ""
+ }
+ d := reflect.ValueOf(r).Elem().Field(i)
+ switch d.Kind() {
+ case reflect.String:
+ return d.String()
+ case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+ return strconv.FormatInt(d.Int(), 10)
+ case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64:
+ return strconv.FormatUint(d.Uint(), 10)
+ case reflect.Slice:
+ switch reflect.ValueOf(r).Elem().Type().Field(i).Tag {
+ case `dns:"a"`:
+ // TODO(miek): Hmm store this as 16 bytes
+ if d.Len() < net.IPv4len {
+ return ""
+ }
+ if d.Len() < net.IPv6len {
+ return net.IPv4(byte(d.Index(0).Uint()),
+ byte(d.Index(1).Uint()),
+ byte(d.Index(2).Uint()),
+ byte(d.Index(3).Uint())).String()
+ }
+ return net.IPv4(byte(d.Index(12).Uint()),
+ byte(d.Index(13).Uint()),
+ byte(d.Index(14).Uint()),
+ byte(d.Index(15).Uint())).String()
+ case `dns:"aaaa"`:
+ if d.Len() < net.IPv6len {
+ return ""
+ }
+ return net.IP{
+ byte(d.Index(0).Uint()),
+ byte(d.Index(1).Uint()),
+ byte(d.Index(2).Uint()),
+ byte(d.Index(3).Uint()),
+ byte(d.Index(4).Uint()),
+ byte(d.Index(5).Uint()),
+ byte(d.Index(6).Uint()),
+ byte(d.Index(7).Uint()),
+ byte(d.Index(8).Uint()),
+ byte(d.Index(9).Uint()),
+ byte(d.Index(10).Uint()),
+ byte(d.Index(11).Uint()),
+ byte(d.Index(12).Uint()),
+ byte(d.Index(13).Uint()),
+ byte(d.Index(14).Uint()),
+ byte(d.Index(15).Uint()),
+ }.String()
+ case `dns:"nsec"`:
+ if d.Len() == 0 {
+ return ""
+ }
+ s := Type(d.Index(0).Uint()).String()
+ for i := 1; i < d.Len(); i++ {
+ s += " " + Type(d.Index(i).Uint()).String()
+ }
+ return s
+ default:
+ // if it does not have a tag its a string slice
+ fallthrough
+ case `dns:"txt"`:
+ if d.Len() == 0 {
+ return ""
+ }
+ s := d.Index(0).String()
+ for i := 1; i < d.Len(); i++ {
+ s += " " + d.Index(i).String()
+ }
+ return s
+ }
+ }
+ return ""
+}
diff --git a/vendor/github.com/miekg/dns/fuzz.go b/vendor/github.com/miekg/dns/fuzz.go
new file mode 100644
index 0000000..57410ac
--- /dev/null
+++ b/vendor/github.com/miekg/dns/fuzz.go
@@ -0,0 +1,32 @@
+// +build fuzz
+
+package dns
+
+import "strings"
+
+func Fuzz(data []byte) int {
+ msg := new(Msg)
+
+ if err := msg.Unpack(data); err != nil {
+ return 0
+ }
+ if _, err := msg.Pack(); err != nil {
+ return 0
+ }
+
+ return 1
+}
+
+func FuzzNewRR(data []byte) int {
+ str := string(data)
+ // Do not fuzz lines that include the $INCLUDE keyword and hint the fuzzer
+ // at avoiding them.
+ // See GH#1025 for context.
+ if strings.Contains(strings.ToUpper(str), "$INCLUDE") {
+ return -1
+ }
+ if _, err := NewRR(str); err != nil {
+ return 0
+ }
+ return 1
+}
diff --git a/vendor/github.com/miekg/dns/generate.go b/vendor/github.com/miekg/dns/generate.go
new file mode 100644
index 0000000..f7e91a2
--- /dev/null
+++ b/vendor/github.com/miekg/dns/generate.go
@@ -0,0 +1,247 @@
+package dns
+
+import (
+ "bytes"
+ "fmt"
+ "io"
+ "strconv"
+ "strings"
+)
+
+// Parse the $GENERATE statement as used in BIND9 zones.
+// See http://www.zytrax.com/books/dns/ch8/generate.html for instance.
+// We are called after '$GENERATE '. After which we expect:
+// * the range (12-24/2)
+// * lhs (ownername)
+// * [[ttl][class]]
+// * type
+// * rhs (rdata)
+// But we are lazy here, only the range is parsed *all* occurrences
+// of $ after that are interpreted.
+func (zp *ZoneParser) generate(l lex) (RR, bool) {
+ token := l.token
+ step := 1
+ if i := strings.IndexByte(token, '/'); i >= 0 {
+ if i+1 == len(token) {
+ return zp.setParseError("bad step in $GENERATE range", l)
+ }
+
+ s, err := strconv.Atoi(token[i+1:])
+ if err != nil || s <= 0 {
+ return zp.setParseError("bad step in $GENERATE range", l)
+ }
+
+ step = s
+ token = token[:i]
+ }
+
+ sx := strings.SplitN(token, "-", 2)
+ if len(sx) != 2 {
+ return zp.setParseError("bad start-stop in $GENERATE range", l)
+ }
+
+ start, err := strconv.Atoi(sx[0])
+ if err != nil {
+ return zp.setParseError("bad start in $GENERATE range", l)
+ }
+
+ end, err := strconv.Atoi(sx[1])
+ if err != nil {
+ return zp.setParseError("bad stop in $GENERATE range", l)
+ }
+ if end < 0 || start < 0 || end < start || (end-start)/step > 65535 {
+ return zp.setParseError("bad range in $GENERATE range", l)
+ }
+
+ // _BLANK
+ l, ok := zp.c.Next()
+ if !ok || l.value != zBlank {
+ return zp.setParseError("garbage after $GENERATE range", l)
+ }
+
+ // Create a complete new string, which we then parse again.
+ var s string
+ for l, ok := zp.c.Next(); ok; l, ok = zp.c.Next() {
+ if l.err {
+ return zp.setParseError("bad data in $GENERATE directive", l)
+ }
+ if l.value == zNewline {
+ break
+ }
+
+ s += l.token
+ }
+
+ r := &generateReader{
+ s: s,
+
+ cur: start,
+ start: start,
+ end: end,
+ step: step,
+
+ file: zp.file,
+ lex: &l,
+ }
+ zp.sub = NewZoneParser(r, zp.origin, zp.file)
+ zp.sub.includeDepth, zp.sub.includeAllowed = zp.includeDepth, zp.includeAllowed
+ zp.sub.generateDisallowed = true
+ zp.sub.SetDefaultTTL(defaultTtl)
+ return zp.subNext()
+}
+
+type generateReader struct {
+ s string
+ si int
+
+ cur int
+ start int
+ end int
+ step int
+
+ mod bytes.Buffer
+
+ escape bool
+
+ eof bool
+
+ file string
+ lex *lex
+}
+
+func (r *generateReader) parseError(msg string, end int) *ParseError {
+ r.eof = true // Make errors sticky.
+
+ l := *r.lex
+ l.token = r.s[r.si-1 : end]
+ l.column += r.si // l.column starts one zBLANK before r.s
+
+ return &ParseError{r.file, msg, l}
+}
+
+func (r *generateReader) Read(p []byte) (int, error) {
+ // NewZLexer, through NewZoneParser, should use ReadByte and
+ // not end up here.
+
+ panic("not implemented")
+}
+
+func (r *generateReader) ReadByte() (byte, error) {
+ if r.eof {
+ return 0, io.EOF
+ }
+ if r.mod.Len() > 0 {
+ return r.mod.ReadByte()
+ }
+
+ if r.si >= len(r.s) {
+ r.si = 0
+ r.cur += r.step
+
+ r.eof = r.cur > r.end || r.cur < 0
+ return '\n', nil
+ }
+
+ si := r.si
+ r.si++
+
+ switch r.s[si] {
+ case '\\':
+ if r.escape {
+ r.escape = false
+ return '\\', nil
+ }
+
+ r.escape = true
+ return r.ReadByte()
+ case '$':
+ if r.escape {
+ r.escape = false
+ return '$', nil
+ }
+
+ mod := "%d"
+
+ if si >= len(r.s)-1 {
+ // End of the string
+ fmt.Fprintf(&r.mod, mod, r.cur)
+ return r.mod.ReadByte()
+ }
+
+ if r.s[si+1] == '$' {
+ r.si++
+ return '$', nil
+ }
+
+ var offset int
+
+ // Search for { and }
+ if r.s[si+1] == '{' {
+ // Modifier block
+ sep := strings.Index(r.s[si+2:], "}")
+ if sep < 0 {
+ return 0, r.parseError("bad modifier in $GENERATE", len(r.s))
+ }
+
+ var errMsg string
+ mod, offset, errMsg = modToPrintf(r.s[si+2 : si+2+sep])
+ if errMsg != "" {
+ return 0, r.parseError(errMsg, si+3+sep)
+ }
+ if r.start+offset < 0 || r.end+offset > 1<<31-1 {
+ return 0, r.parseError("bad offset in $GENERATE", si+3+sep)
+ }
+
+ r.si += 2 + sep // Jump to it
+ }
+
+ fmt.Fprintf(&r.mod, mod, r.cur+offset)
+ return r.mod.ReadByte()
+ default:
+ if r.escape { // Pretty useless here
+ r.escape = false
+ return r.ReadByte()
+ }
+
+ return r.s[si], nil
+ }
+}
+
+// Convert a $GENERATE modifier 0,0,d to something Printf can deal with.
+func modToPrintf(s string) (string, int, string) {
+ // Modifier is { offset [ ,width [ ,base ] ] } - provide default
+ // values for optional width and type, if necessary.
+ var offStr, widthStr, base string
+ switch xs := strings.Split(s, ","); len(xs) {
+ case 1:
+ offStr, widthStr, base = xs[0], "0", "d"
+ case 2:
+ offStr, widthStr, base = xs[0], xs[1], "d"
+ case 3:
+ offStr, widthStr, base = xs[0], xs[1], xs[2]
+ default:
+ return "", 0, "bad modifier in $GENERATE"
+ }
+
+ switch base {
+ case "o", "d", "x", "X":
+ default:
+ return "", 0, "bad base in $GENERATE"
+ }
+
+ offset, err := strconv.Atoi(offStr)
+ if err != nil {
+ return "", 0, "bad offset in $GENERATE"
+ }
+
+ width, err := strconv.Atoi(widthStr)
+ if err != nil || width < 0 || width > 255 {
+ return "", 0, "bad width in $GENERATE"
+ }
+
+ if width == 0 {
+ return "%" + base, offset, ""
+ }
+
+ return "%0" + widthStr + base, offset, ""
+}
diff --git a/vendor/github.com/miekg/dns/go.mod b/vendor/github.com/miekg/dns/go.mod
new file mode 100644
index 0000000..6003d05
--- /dev/null
+++ b/vendor/github.com/miekg/dns/go.mod
@@ -0,0 +1,11 @@
+module github.com/miekg/dns
+
+go 1.12
+
+require (
+ golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550
+ golang.org/x/net v0.0.0-20190923162816-aa69164e4478
+ golang.org/x/sync v0.0.0-20190423024810-112230192c58
+ golang.org/x/sys v0.0.0-20190924154521-2837fb4f24fe
+ golang.org/x/tools v0.0.0-20191216052735-49a3e744a425 // indirect
+)
diff --git a/vendor/github.com/miekg/dns/go.sum b/vendor/github.com/miekg/dns/go.sum
new file mode 100644
index 0000000..96bda3a
--- /dev/null
+++ b/vendor/github.com/miekg/dns/go.sum
@@ -0,0 +1,39 @@
+golang.org/x/crypto v0.0.0-20181001203147-e3636079e1a4 h1:Vk3wNqEZwyGyei9yq5ekj7frek2u7HUfffJ1/opblzc=
+golang.org/x/crypto v0.0.0-20181001203147-e3636079e1a4/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20190829043050-9756ffdc2472 h1:Gv7RPwsi3eZ2Fgewe3CBsuOebPwO27PoXzRpJPsvSSM=
+golang.org/x/crypto v0.0.0-20190829043050-9756ffdc2472/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20190923035154-9ee001bba392 h1:ACG4HJsFiNMf47Y4PeRoebLNy/2lXT9EtprMuTFWt1M=
+golang.org/x/crypto v0.0.0-20190923035154-9ee001bba392/go.mod h1:/lpIB1dKB+9EgE3H3cr1v9wB50oz8l4C4h62xy7jSTY=
+golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550 h1:ObdrDkeb4kJdCP557AjRjq69pTHfNouLtWZG7j9rPN8=
+golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
+golang.org/x/net v0.0.0-20180926154720-4dfa2610cdf3 h1:dgd4x4kJt7G4k4m93AYLzM8Ni6h2qLTfh9n9vXJT3/0=
+golang.org/x/net v0.0.0-20180926154720-4dfa2610cdf3/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297 h1:k7pJ2yAPLPgbskkFdhRCsA77k2fySZ1zf2zCjvQCiIM=
+golang.org/x/net v0.0.0-20190827160401-ba9fcec4b297/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20190923162816-aa69164e4478 h1:l5EDrHhldLYb3ZRHDUhXF7Om7MvYXnkV9/iQNo1lX6g=
+golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA=
+golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58 h1:8gQV6CLnAEikrhgkHFbMAEhagSSnXWGV915qUMm9mrU=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20180928133829-e4b3c5e90611 h1:O33LKL7WyJgjN9CvxfTIomjIClbd/Kq86/iipowHQU0=
+golang.org/x/sys v0.0.0-20180928133829-e4b3c5e90611/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190904154756-749cb33beabd h1:DBH9mDw0zluJT/R+nGuV3jWFWLFaHyYZWD4tOT+cjn0=
+golang.org/x/sys v0.0.0-20190904154756-749cb33beabd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190922100055-0a153f010e69/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20190924154521-2837fb4f24fe h1:6fAMxZRR6sl1Uq8U61gxU+kPTs2tR8uOySCbBP7BN/M=
+golang.org/x/sys v0.0.0-20190924154521-2837fb4f24fe/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20190907020128-2ca718005c18/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191216052735-49a3e744a425 h1:VvQyQJN0tSuecqgcIxMWnnfG5kSmgy9KZR9sW3W5QeA=
+golang.org/x/tools v0.0.0-20191216052735-49a3e744a425/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
diff --git a/vendor/github.com/miekg/dns/labels.go b/vendor/github.com/miekg/dns/labels.go
new file mode 100644
index 0000000..10d8247
--- /dev/null
+++ b/vendor/github.com/miekg/dns/labels.go
@@ -0,0 +1,212 @@
+package dns
+
+// Holds a bunch of helper functions for dealing with labels.
+
+// SplitDomainName splits a name string into it's labels.
+// www.miek.nl. returns []string{"www", "miek", "nl"}
+// .www.miek.nl. returns []string{"", "www", "miek", "nl"},
+// The root label (.) returns nil. Note that using
+// strings.Split(s) will work in most cases, but does not handle
+// escaped dots (\.) for instance.
+// s must be a syntactically valid domain name, see IsDomainName.
+func SplitDomainName(s string) (labels []string) {
+ if len(s) == 0 {
+ return nil
+ }
+ fqdnEnd := 0 // offset of the final '.' or the length of the name
+ idx := Split(s)
+ begin := 0
+ if IsFqdn(s) {
+ fqdnEnd = len(s) - 1
+ } else {
+ fqdnEnd = len(s)
+ }
+
+ switch len(idx) {
+ case 0:
+ return nil
+ case 1:
+ // no-op
+ default:
+ for _, end := range idx[1:] {
+ labels = append(labels, s[begin:end-1])
+ begin = end
+ }
+ }
+
+ return append(labels, s[begin:fqdnEnd])
+}
+
+// CompareDomainName compares the names s1 and s2 and
+// returns how many labels they have in common starting from the *right*.
+// The comparison stops at the first inequality. The names are downcased
+// before the comparison.
+//
+// www.miek.nl. and miek.nl. have two labels in common: miek and nl
+// www.miek.nl. and www.bla.nl. have one label in common: nl
+//
+// s1 and s2 must be syntactically valid domain names.
+func CompareDomainName(s1, s2 string) (n int) {
+ // the first check: root label
+ if s1 == "." || s2 == "." {
+ return 0
+ }
+
+ l1 := Split(s1)
+ l2 := Split(s2)
+
+ j1 := len(l1) - 1 // end
+ i1 := len(l1) - 2 // start
+ j2 := len(l2) - 1
+ i2 := len(l2) - 2
+ // the second check can be done here: last/only label
+ // before we fall through into the for-loop below
+ if equal(s1[l1[j1]:], s2[l2[j2]:]) {
+ n++
+ } else {
+ return
+ }
+ for {
+ if i1 < 0 || i2 < 0 {
+ break
+ }
+ if equal(s1[l1[i1]:l1[j1]], s2[l2[i2]:l2[j2]]) {
+ n++
+ } else {
+ break
+ }
+ j1--
+ i1--
+ j2--
+ i2--
+ }
+ return
+}
+
+// CountLabel counts the the number of labels in the string s.
+// s must be a syntactically valid domain name.
+func CountLabel(s string) (labels int) {
+ if s == "." {
+ return
+ }
+ off := 0
+ end := false
+ for {
+ off, end = NextLabel(s, off)
+ labels++
+ if end {
+ return
+ }
+ }
+}
+
+// Split splits a name s into its label indexes.
+// www.miek.nl. returns []int{0, 4, 9}, www.miek.nl also returns []int{0, 4, 9}.
+// The root name (.) returns nil. Also see SplitDomainName.
+// s must be a syntactically valid domain name.
+func Split(s string) []int {
+ if s == "." {
+ return nil
+ }
+ idx := make([]int, 1, 3)
+ off := 0
+ end := false
+
+ for {
+ off, end = NextLabel(s, off)
+ if end {
+ return idx
+ }
+ idx = append(idx, off)
+ }
+}
+
+// NextLabel returns the index of the start of the next label in the
+// string s starting at offset.
+// The bool end is true when the end of the string has been reached.
+// Also see PrevLabel.
+func NextLabel(s string, offset int) (i int, end bool) {
+ if s == "" {
+ return 0, true
+ }
+ for i = offset; i < len(s)-1; i++ {
+ if s[i] != '.' {
+ continue
+ }
+ j := i - 1
+ for j >= 0 && s[j] == '\\' {
+ j--
+ }
+
+ if (j-i)%2 == 0 {
+ continue
+ }
+
+ return i + 1, false
+ }
+ return i + 1, true
+}
+
+// PrevLabel returns the index of the label when starting from the right and
+// jumping n labels to the left.
+// The bool start is true when the start of the string has been overshot.
+// Also see NextLabel.
+func PrevLabel(s string, n int) (i int, start bool) {
+ if s == "" {
+ return 0, true
+ }
+ if n == 0 {
+ return len(s), false
+ }
+
+ l := len(s) - 1
+ if s[l] == '.' {
+ l--
+ }
+
+ for ; l >= 0 && n > 0; l-- {
+ if s[l] != '.' {
+ continue
+ }
+ j := l - 1
+ for j >= 0 && s[j] == '\\' {
+ j--
+ }
+
+ if (j-l)%2 == 0 {
+ continue
+ }
+
+ n--
+ if n == 0 {
+ return l + 1, false
+ }
+ }
+
+ return 0, n > 1
+}
+
+// equal compares a and b while ignoring case. It returns true when equal otherwise false.
+func equal(a, b string) bool {
+ // might be lifted into API function.
+ la := len(a)
+ lb := len(b)
+ if la != lb {
+ return false
+ }
+
+ for i := la - 1; i >= 0; i-- {
+ ai := a[i]
+ bi := b[i]
+ if ai >= 'A' && ai <= 'Z' {
+ ai |= 'a' - 'A'
+ }
+ if bi >= 'A' && bi <= 'Z' {
+ bi |= 'a' - 'A'
+ }
+ if ai != bi {
+ return false
+ }
+ }
+ return true
+}
diff --git a/vendor/github.com/miekg/dns/listen_go111.go b/vendor/github.com/miekg/dns/listen_go111.go
new file mode 100644
index 0000000..fad195c
--- /dev/null
+++ b/vendor/github.com/miekg/dns/listen_go111.go
@@ -0,0 +1,44 @@
+// +build go1.11
+// +build aix darwin dragonfly freebsd linux netbsd openbsd
+
+package dns
+
+import (
+ "context"
+ "net"
+ "syscall"
+
+ "golang.org/x/sys/unix"
+)
+
+const supportsReusePort = true
+
+func reuseportControl(network, address string, c syscall.RawConn) error {
+ var opErr error
+ err := c.Control(func(fd uintptr) {
+ opErr = unix.SetsockoptInt(int(fd), unix.SOL_SOCKET, unix.SO_REUSEPORT, 1)
+ })
+ if err != nil {
+ return err
+ }
+
+ return opErr
+}
+
+func listenTCP(network, addr string, reuseport bool) (net.Listener, error) {
+ var lc net.ListenConfig
+ if reuseport {
+ lc.Control = reuseportControl
+ }
+
+ return lc.Listen(context.Background(), network, addr)
+}
+
+func listenUDP(network, addr string, reuseport bool) (net.PacketConn, error) {
+ var lc net.ListenConfig
+ if reuseport {
+ lc.Control = reuseportControl
+ }
+
+ return lc.ListenPacket(context.Background(), network, addr)
+}
diff --git a/vendor/github.com/miekg/dns/listen_go_not111.go b/vendor/github.com/miekg/dns/listen_go_not111.go
new file mode 100644
index 0000000..b920141
--- /dev/null
+++ b/vendor/github.com/miekg/dns/listen_go_not111.go
@@ -0,0 +1,23 @@
+// +build !go1.11 !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd
+
+package dns
+
+import "net"
+
+const supportsReusePort = false
+
+func listenTCP(network, addr string, reuseport bool) (net.Listener, error) {
+ if reuseport {
+ // TODO(tmthrgd): return an error?
+ }
+
+ return net.Listen(network, addr)
+}
+
+func listenUDP(network, addr string, reuseport bool) (net.PacketConn, error) {
+ if reuseport {
+ // TODO(tmthrgd): return an error?
+ }
+
+ return net.ListenPacket(network, addr)
+}
diff --git a/vendor/github.com/miekg/dns/msg.go b/vendor/github.com/miekg/dns/msg.go
new file mode 100644
index 0000000..2938130
--- /dev/null
+++ b/vendor/github.com/miekg/dns/msg.go
@@ -0,0 +1,1196 @@
+// DNS packet assembly, see RFC 1035. Converting from - Unpack() -
+// and to - Pack() - wire format.
+// All the packers and unpackers take a (msg []byte, off int)
+// and return (off1 int, ok bool). If they return ok==false, they
+// also return off1==len(msg), so that the next unpacker will
+// also fail. This lets us avoid checks of ok until the end of a
+// packing sequence.
+
+package dns
+
+//go:generate go run msg_generate.go
+
+import (
+ "crypto/rand"
+ "encoding/binary"
+ "fmt"
+ "math/big"
+ "strconv"
+ "strings"
+)
+
+const (
+ maxCompressionOffset = 2 << 13 // We have 14 bits for the compression pointer
+ maxDomainNameWireOctets = 255 // See RFC 1035 section 2.3.4
+
+ // This is the maximum number of compression pointers that should occur in a
+ // semantically valid message. Each label in a domain name must be at least one
+ // octet and is separated by a period. The root label won't be represented by a
+ // compression pointer to a compression pointer, hence the -2 to exclude the
+ // smallest valid root label.
+ //
+ // It is possible to construct a valid message that has more compression pointers
+ // than this, and still doesn't loop, by pointing to a previous pointer. This is
+ // not something a well written implementation should ever do, so we leave them
+ // to trip the maximum compression pointer check.
+ maxCompressionPointers = (maxDomainNameWireOctets+1)/2 - 2
+
+ // This is the maximum length of a domain name in presentation format. The
+ // maximum wire length of a domain name is 255 octets (see above), with the
+ // maximum label length being 63. The wire format requires one extra byte over
+ // the presentation format, reducing the number of octets by 1. Each label in
+ // the name will be separated by a single period, with each octet in the label
+ // expanding to at most 4 bytes (\DDD). If all other labels are of the maximum
+ // length, then the final label can only be 61 octets long to not exceed the
+ // maximum allowed wire length.
+ maxDomainNamePresentationLength = 61*4 + 1 + 63*4 + 1 + 63*4 + 1 + 63*4 + 1
+)
+
+// Errors defined in this package.
+var (
+ ErrAlg error = &Error{err: "bad algorithm"} // ErrAlg indicates an error with the (DNSSEC) algorithm.
+ ErrAuth error = &Error{err: "bad authentication"} // ErrAuth indicates an error in the TSIG authentication.
+ ErrBuf error = &Error{err: "buffer size too small"} // ErrBuf indicates that the buffer used is too small for the message.
+ ErrConnEmpty error = &Error{err: "conn has no connection"} // ErrConnEmpty indicates a connection is being used before it is initialized.
+ ErrExtendedRcode error = &Error{err: "bad extended rcode"} // ErrExtendedRcode ...
+ ErrFqdn error = &Error{err: "domain must be fully qualified"} // ErrFqdn indicates that a domain name does not have a closing dot.
+ ErrId error = &Error{err: "id mismatch"} // ErrId indicates there is a mismatch with the message's ID.
+ ErrKeyAlg error = &Error{err: "bad key algorithm"} // ErrKeyAlg indicates that the algorithm in the key is not valid.
+ ErrKey error = &Error{err: "bad key"}
+ ErrKeySize error = &Error{err: "bad key size"}
+ ErrLongDomain error = &Error{err: fmt.Sprintf("domain name exceeded %d wire-format octets", maxDomainNameWireOctets)}
+ ErrNoSig error = &Error{err: "no signature found"}
+ ErrPrivKey error = &Error{err: "bad private key"}
+ ErrRcode error = &Error{err: "bad rcode"}
+ ErrRdata error = &Error{err: "bad rdata"}
+ ErrRRset error = &Error{err: "bad rrset"}
+ ErrSecret error = &Error{err: "no secrets defined"}
+ ErrShortRead error = &Error{err: "short read"}
+ ErrSig error = &Error{err: "bad signature"} // ErrSig indicates that a signature can not be cryptographically validated.
+ ErrSoa error = &Error{err: "no SOA"} // ErrSOA indicates that no SOA RR was seen when doing zone transfers.
+ ErrTime error = &Error{err: "bad time"} // ErrTime indicates a timing error in TSIG authentication.
+)
+
+// Id by default returns a 16-bit random number to be used as a message id. The
+// number is drawn from a cryptographically secure random number generator.
+// This being a variable the function can be reassigned to a custom function.
+// For instance, to make it return a static value for testing:
+//
+// dns.Id = func() uint16 { return 3 }
+var Id = id
+
+// id returns a 16 bits random number to be used as a
+// message id. The random provided should be good enough.
+func id() uint16 {
+ var output uint16
+ err := binary.Read(rand.Reader, binary.BigEndian, &output)
+ if err != nil {
+ panic("dns: reading random id failed: " + err.Error())
+ }
+ return output
+}
+
+// MsgHdr is a a manually-unpacked version of (id, bits).
+type MsgHdr struct {
+ Id uint16
+ Response bool
+ Opcode int
+ Authoritative bool
+ Truncated bool
+ RecursionDesired bool
+ RecursionAvailable bool
+ Zero bool
+ AuthenticatedData bool
+ CheckingDisabled bool
+ Rcode int
+}
+
+// Msg contains the layout of a DNS message.
+type Msg struct {
+ MsgHdr
+ Compress bool `json:"-"` // If true, the message will be compressed when converted to wire format.
+ Question []Question // Holds the RR(s) of the question section.
+ Answer []RR // Holds the RR(s) of the answer section.
+ Ns []RR // Holds the RR(s) of the authority section.
+ Extra []RR // Holds the RR(s) of the additional section.
+}
+
+// ClassToString is a maps Classes to strings for each CLASS wire type.
+var ClassToString = map[uint16]string{
+ ClassINET: "IN",
+ ClassCSNET: "CS",
+ ClassCHAOS: "CH",
+ ClassHESIOD: "HS",
+ ClassNONE: "NONE",
+ ClassANY: "ANY",
+}
+
+// OpcodeToString maps Opcodes to strings.
+var OpcodeToString = map[int]string{
+ OpcodeQuery: "QUERY",
+ OpcodeIQuery: "IQUERY",
+ OpcodeStatus: "STATUS",
+ OpcodeNotify: "NOTIFY",
+ OpcodeUpdate: "UPDATE",
+}
+
+// RcodeToString maps Rcodes to strings.
+var RcodeToString = map[int]string{
+ RcodeSuccess: "NOERROR",
+ RcodeFormatError: "FORMERR",
+ RcodeServerFailure: "SERVFAIL",
+ RcodeNameError: "NXDOMAIN",
+ RcodeNotImplemented: "NOTIMP",
+ RcodeRefused: "REFUSED",
+ RcodeYXDomain: "YXDOMAIN", // See RFC 2136
+ RcodeYXRrset: "YXRRSET",
+ RcodeNXRrset: "NXRRSET",
+ RcodeNotAuth: "NOTAUTH",
+ RcodeNotZone: "NOTZONE",
+ RcodeBadSig: "BADSIG", // Also known as RcodeBadVers, see RFC 6891
+ // RcodeBadVers: "BADVERS",
+ RcodeBadKey: "BADKEY",
+ RcodeBadTime: "BADTIME",
+ RcodeBadMode: "BADMODE",
+ RcodeBadName: "BADNAME",
+ RcodeBadAlg: "BADALG",
+ RcodeBadTrunc: "BADTRUNC",
+ RcodeBadCookie: "BADCOOKIE",
+}
+
+// compressionMap is used to allow a more efficient compression map
+// to be used for internal packDomainName calls without changing the
+// signature or functionality of public API.
+//
+// In particular, map[string]uint16 uses 25% less per-entry memory
+// than does map[string]int.
+type compressionMap struct {
+ ext map[string]int // external callers
+ int map[string]uint16 // internal callers
+}
+
+func (m compressionMap) valid() bool {
+ return m.int != nil || m.ext != nil
+}
+
+func (m compressionMap) insert(s string, pos int) {
+ if m.ext != nil {
+ m.ext[s] = pos
+ } else {
+ m.int[s] = uint16(pos)
+ }
+}
+
+func (m compressionMap) find(s string) (int, bool) {
+ if m.ext != nil {
+ pos, ok := m.ext[s]
+ return pos, ok
+ }
+
+ pos, ok := m.int[s]
+ return int(pos), ok
+}
+
+// Domain names are a sequence of counted strings
+// split at the dots. They end with a zero-length string.
+
+// PackDomainName packs a domain name s into msg[off:].
+// If compression is wanted compress must be true and the compression
+// map needs to hold a mapping between domain names and offsets
+// pointing into msg.
+func PackDomainName(s string, msg []byte, off int, compression map[string]int, compress bool) (off1 int, err error) {
+ return packDomainName(s, msg, off, compressionMap{ext: compression}, compress)
+}
+
+func packDomainName(s string, msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ // XXX: A logical copy of this function exists in IsDomainName and
+ // should be kept in sync with this function.
+
+ ls := len(s)
+ if ls == 0 { // Ok, for instance when dealing with update RR without any rdata.
+ return off, nil
+ }
+
+ // If not fully qualified, error out.
+ if !IsFqdn(s) {
+ return len(msg), ErrFqdn
+ }
+
+ // Each dot ends a segment of the name.
+ // We trade each dot byte for a length byte.
+ // Except for escaped dots (\.), which are normal dots.
+ // There is also a trailing zero.
+
+ // Compression
+ pointer := -1
+
+ // Emit sequence of counted strings, chopping at dots.
+ var (
+ begin int
+ compBegin int
+ compOff int
+ bs []byte
+ wasDot bool
+ )
+loop:
+ for i := 0; i < ls; i++ {
+ var c byte
+ if bs == nil {
+ c = s[i]
+ } else {
+ c = bs[i]
+ }
+
+ switch c {
+ case '\\':
+ if off+1 > len(msg) {
+ return len(msg), ErrBuf
+ }
+
+ if bs == nil {
+ bs = []byte(s)
+ }
+
+ // check for \DDD
+ if i+3 < ls && isDigit(bs[i+1]) && isDigit(bs[i+2]) && isDigit(bs[i+3]) {
+ bs[i] = dddToByte(bs[i+1:])
+ copy(bs[i+1:ls-3], bs[i+4:])
+ ls -= 3
+ compOff += 3
+ } else {
+ copy(bs[i:ls-1], bs[i+1:])
+ ls--
+ compOff++
+ }
+
+ wasDot = false
+ case '.':
+ if wasDot {
+ // two dots back to back is not legal
+ return len(msg), ErrRdata
+ }
+ wasDot = true
+
+ labelLen := i - begin
+ if labelLen >= 1<<6 { // top two bits of length must be clear
+ return len(msg), ErrRdata
+ }
+
+ // off can already (we're in a loop) be bigger than len(msg)
+ // this happens when a name isn't fully qualified
+ if off+1+labelLen > len(msg) {
+ return len(msg), ErrBuf
+ }
+
+ // Don't try to compress '.'
+ // We should only compress when compress is true, but we should also still pick
+ // up names that can be used for *future* compression(s).
+ if compression.valid() && !isRootLabel(s, bs, begin, ls) {
+ if p, ok := compression.find(s[compBegin:]); ok {
+ // The first hit is the longest matching dname
+ // keep the pointer offset we get back and store
+ // the offset of the current name, because that's
+ // where we need to insert the pointer later
+
+ // If compress is true, we're allowed to compress this dname
+ if compress {
+ pointer = p // Where to point to
+ break loop
+ }
+ } else if off < maxCompressionOffset {
+ // Only offsets smaller than maxCompressionOffset can be used.
+ compression.insert(s[compBegin:], off)
+ }
+ }
+
+ // The following is covered by the length check above.
+ msg[off] = byte(labelLen)
+
+ if bs == nil {
+ copy(msg[off+1:], s[begin:i])
+ } else {
+ copy(msg[off+1:], bs[begin:i])
+ }
+ off += 1 + labelLen
+
+ begin = i + 1
+ compBegin = begin + compOff
+ default:
+ wasDot = false
+ }
+ }
+
+ // Root label is special
+ if isRootLabel(s, bs, 0, ls) {
+ return off, nil
+ }
+
+ // If we did compression and we find something add the pointer here
+ if pointer != -1 {
+ // We have two bytes (14 bits) to put the pointer in
+ binary.BigEndian.PutUint16(msg[off:], uint16(pointer^0xC000))
+ return off + 2, nil
+ }
+
+ if off < len(msg) {
+ msg[off] = 0
+ }
+
+ return off + 1, nil
+}
+
+// isRootLabel returns whether s or bs, from off to end, is the root
+// label ".".
+//
+// If bs is nil, s will be checked, otherwise bs will be checked.
+func isRootLabel(s string, bs []byte, off, end int) bool {
+ if bs == nil {
+ return s[off:end] == "."
+ }
+
+ return end-off == 1 && bs[off] == '.'
+}
+
+// Unpack a domain name.
+// In addition to the simple sequences of counted strings above,
+// domain names are allowed to refer to strings elsewhere in the
+// packet, to avoid repeating common suffixes when returning
+// many entries in a single domain. The pointers are marked
+// by a length byte with the top two bits set. Ignoring those
+// two bits, that byte and the next give a 14 bit offset from msg[0]
+// where we should pick up the trail.
+// Note that if we jump elsewhere in the packet,
+// we return off1 == the offset after the first pointer we found,
+// which is where the next record will start.
+// In theory, the pointers are only allowed to jump backward.
+// We let them jump anywhere and stop jumping after a while.
+
+// UnpackDomainName unpacks a domain name into a string. It returns
+// the name, the new offset into msg and any error that occurred.
+//
+// When an error is encountered, the unpacked name will be discarded
+// and len(msg) will be returned as the offset.
+func UnpackDomainName(msg []byte, off int) (string, int, error) {
+ s := make([]byte, 0, maxDomainNamePresentationLength)
+ off1 := 0
+ lenmsg := len(msg)
+ budget := maxDomainNameWireOctets
+ ptr := 0 // number of pointers followed
+Loop:
+ for {
+ if off >= lenmsg {
+ return "", lenmsg, ErrBuf
+ }
+ c := int(msg[off])
+ off++
+ switch c & 0xC0 {
+ case 0x00:
+ if c == 0x00 {
+ // end of name
+ break Loop
+ }
+ // literal string
+ if off+c > lenmsg {
+ return "", lenmsg, ErrBuf
+ }
+ budget -= c + 1 // +1 for the label separator
+ if budget <= 0 {
+ return "", lenmsg, ErrLongDomain
+ }
+ for _, b := range msg[off : off+c] {
+ switch b {
+ case '.', '(', ')', ';', ' ', '@':
+ fallthrough
+ case '"', '\\':
+ s = append(s, '\\', b)
+ default:
+ if b < ' ' || b > '~' { // unprintable, use \DDD
+ s = append(s, escapeByte(b)...)
+ } else {
+ s = append(s, b)
+ }
+ }
+ }
+ s = append(s, '.')
+ off += c
+ case 0xC0:
+ // pointer to somewhere else in msg.
+ // remember location after first ptr,
+ // since that's how many bytes we consumed.
+ // also, don't follow too many pointers --
+ // maybe there's a loop.
+ if off >= lenmsg {
+ return "", lenmsg, ErrBuf
+ }
+ c1 := msg[off]
+ off++
+ if ptr == 0 {
+ off1 = off
+ }
+ if ptr++; ptr > maxCompressionPointers {
+ return "", lenmsg, &Error{err: "too many compression pointers"}
+ }
+ // pointer should guarantee that it advances and points forwards at least
+ // but the condition on previous three lines guarantees that it's
+ // at least loop-free
+ off = (c^0xC0)<<8 | int(c1)
+ default:
+ // 0x80 and 0x40 are reserved
+ return "", lenmsg, ErrRdata
+ }
+ }
+ if ptr == 0 {
+ off1 = off
+ }
+ if len(s) == 0 {
+ return ".", off1, nil
+ }
+ return string(s), off1, nil
+}
+
+func packTxt(txt []string, msg []byte, offset int, tmp []byte) (int, error) {
+ if len(txt) == 0 {
+ if offset >= len(msg) {
+ return offset, ErrBuf
+ }
+ msg[offset] = 0
+ return offset, nil
+ }
+ var err error
+ for _, s := range txt {
+ if len(s) > len(tmp) {
+ return offset, ErrBuf
+ }
+ offset, err = packTxtString(s, msg, offset, tmp)
+ if err != nil {
+ return offset, err
+ }
+ }
+ return offset, nil
+}
+
+func packTxtString(s string, msg []byte, offset int, tmp []byte) (int, error) {
+ lenByteOffset := offset
+ if offset >= len(msg) || len(s) > len(tmp) {
+ return offset, ErrBuf
+ }
+ offset++
+ bs := tmp[:len(s)]
+ copy(bs, s)
+ for i := 0; i < len(bs); i++ {
+ if len(msg) <= offset {
+ return offset, ErrBuf
+ }
+ if bs[i] == '\\' {
+ i++
+ if i == len(bs) {
+ break
+ }
+ // check for \DDD
+ if i+2 < len(bs) && isDigit(bs[i]) && isDigit(bs[i+1]) && isDigit(bs[i+2]) {
+ msg[offset] = dddToByte(bs[i:])
+ i += 2
+ } else {
+ msg[offset] = bs[i]
+ }
+ } else {
+ msg[offset] = bs[i]
+ }
+ offset++
+ }
+ l := offset - lenByteOffset - 1
+ if l > 255 {
+ return offset, &Error{err: "string exceeded 255 bytes in txt"}
+ }
+ msg[lenByteOffset] = byte(l)
+ return offset, nil
+}
+
+func packOctetString(s string, msg []byte, offset int, tmp []byte) (int, error) {
+ if offset >= len(msg) || len(s) > len(tmp) {
+ return offset, ErrBuf
+ }
+ bs := tmp[:len(s)]
+ copy(bs, s)
+ for i := 0; i < len(bs); i++ {
+ if len(msg) <= offset {
+ return offset, ErrBuf
+ }
+ if bs[i] == '\\' {
+ i++
+ if i == len(bs) {
+ break
+ }
+ // check for \DDD
+ if i+2 < len(bs) && isDigit(bs[i]) && isDigit(bs[i+1]) && isDigit(bs[i+2]) {
+ msg[offset] = dddToByte(bs[i:])
+ i += 2
+ } else {
+ msg[offset] = bs[i]
+ }
+ } else {
+ msg[offset] = bs[i]
+ }
+ offset++
+ }
+ return offset, nil
+}
+
+func unpackTxt(msg []byte, off0 int) (ss []string, off int, err error) {
+ off = off0
+ var s string
+ for off < len(msg) && err == nil {
+ s, off, err = unpackString(msg, off)
+ if err == nil {
+ ss = append(ss, s)
+ }
+ }
+ return
+}
+
+// Helpers for dealing with escaped bytes
+func isDigit(b byte) bool { return b >= '0' && b <= '9' }
+
+func dddToByte(s []byte) byte {
+ _ = s[2] // bounds check hint to compiler; see golang.org/issue/14808
+ return byte((s[0]-'0')*100 + (s[1]-'0')*10 + (s[2] - '0'))
+}
+
+func dddStringToByte(s string) byte {
+ _ = s[2] // bounds check hint to compiler; see golang.org/issue/14808
+ return byte((s[0]-'0')*100 + (s[1]-'0')*10 + (s[2] - '0'))
+}
+
+// Helper function for packing and unpacking
+func intToBytes(i *big.Int, length int) []byte {
+ buf := i.Bytes()
+ if len(buf) < length {
+ b := make([]byte, length)
+ copy(b[length-len(buf):], buf)
+ return b
+ }
+ return buf
+}
+
+// PackRR packs a resource record rr into msg[off:].
+// See PackDomainName for documentation about the compression.
+func PackRR(rr RR, msg []byte, off int, compression map[string]int, compress bool) (off1 int, err error) {
+ headerEnd, off1, err := packRR(rr, msg, off, compressionMap{ext: compression}, compress)
+ if err == nil {
+ // packRR no longer sets the Rdlength field on the rr, but
+ // callers might be expecting it so we set it here.
+ rr.Header().Rdlength = uint16(off1 - headerEnd)
+ }
+ return off1, err
+}
+
+func packRR(rr RR, msg []byte, off int, compression compressionMap, compress bool) (headerEnd int, off1 int, err error) {
+ if rr == nil {
+ return len(msg), len(msg), &Error{err: "nil rr"}
+ }
+
+ headerEnd, err = rr.Header().packHeader(msg, off, compression, compress)
+ if err != nil {
+ return headerEnd, len(msg), err
+ }
+
+ off1, err = rr.pack(msg, headerEnd, compression, compress)
+ if err != nil {
+ return headerEnd, len(msg), err
+ }
+
+ rdlength := off1 - headerEnd
+ if int(uint16(rdlength)) != rdlength { // overflow
+ return headerEnd, len(msg), ErrRdata
+ }
+
+ // The RDLENGTH field is the last field in the header and we set it here.
+ binary.BigEndian.PutUint16(msg[headerEnd-2:], uint16(rdlength))
+ return headerEnd, off1, nil
+}
+
+// UnpackRR unpacks msg[off:] into an RR.
+func UnpackRR(msg []byte, off int) (rr RR, off1 int, err error) {
+ h, off, msg, err := unpackHeader(msg, off)
+ if err != nil {
+ return nil, len(msg), err
+ }
+
+ return UnpackRRWithHeader(h, msg, off)
+}
+
+// UnpackRRWithHeader unpacks the record type specific payload given an existing
+// RR_Header.
+func UnpackRRWithHeader(h RR_Header, msg []byte, off int) (rr RR, off1 int, err error) {
+ if newFn, ok := TypeToRR[h.Rrtype]; ok {
+ rr = newFn()
+ *rr.Header() = h
+ } else {
+ rr = &RFC3597{Hdr: h}
+ }
+
+ if noRdata(h) {
+ return rr, off, nil
+ }
+
+ end := off + int(h.Rdlength)
+
+ off, err = rr.unpack(msg, off)
+ if err != nil {
+ return nil, end, err
+ }
+ if off != end {
+ return &h, end, &Error{err: "bad rdlength"}
+ }
+
+ return rr, off, nil
+}
+
+// unpackRRslice unpacks msg[off:] into an []RR.
+// If we cannot unpack the whole array, then it will return nil
+func unpackRRslice(l int, msg []byte, off int) (dst1 []RR, off1 int, err error) {
+ var r RR
+ // Don't pre-allocate, l may be under attacker control
+ var dst []RR
+ for i := 0; i < l; i++ {
+ off1 := off
+ r, off, err = UnpackRR(msg, off)
+ if err != nil {
+ off = len(msg)
+ break
+ }
+ // If offset does not increase anymore, l is a lie
+ if off1 == off {
+ l = i
+ break
+ }
+ dst = append(dst, r)
+ }
+ if err != nil && off == len(msg) {
+ dst = nil
+ }
+ return dst, off, err
+}
+
+// Convert a MsgHdr to a string, with dig-like headers:
+//
+//;; opcode: QUERY, status: NOERROR, id: 48404
+//
+//;; flags: qr aa rd ra;
+func (h *MsgHdr) String() string {
+ if h == nil {
+ return " MsgHdr"
+ }
+
+ s := ";; opcode: " + OpcodeToString[h.Opcode]
+ s += ", status: " + RcodeToString[h.Rcode]
+ s += ", id: " + strconv.Itoa(int(h.Id)) + "\n"
+
+ s += ";; flags:"
+ if h.Response {
+ s += " qr"
+ }
+ if h.Authoritative {
+ s += " aa"
+ }
+ if h.Truncated {
+ s += " tc"
+ }
+ if h.RecursionDesired {
+ s += " rd"
+ }
+ if h.RecursionAvailable {
+ s += " ra"
+ }
+ if h.Zero { // Hmm
+ s += " z"
+ }
+ if h.AuthenticatedData {
+ s += " ad"
+ }
+ if h.CheckingDisabled {
+ s += " cd"
+ }
+
+ s += ";"
+ return s
+}
+
+// Pack packs a Msg: it is converted to to wire format.
+// If the dns.Compress is true the message will be in compressed wire format.
+func (dns *Msg) Pack() (msg []byte, err error) {
+ return dns.PackBuffer(nil)
+}
+
+// PackBuffer packs a Msg, using the given buffer buf. If buf is too small a new buffer is allocated.
+func (dns *Msg) PackBuffer(buf []byte) (msg []byte, err error) {
+ // If this message can't be compressed, avoid filling the
+ // compression map and creating garbage.
+ if dns.Compress && dns.isCompressible() {
+ compression := make(map[string]uint16) // Compression pointer mappings.
+ return dns.packBufferWithCompressionMap(buf, compressionMap{int: compression}, true)
+ }
+
+ return dns.packBufferWithCompressionMap(buf, compressionMap{}, false)
+}
+
+// packBufferWithCompressionMap packs a Msg, using the given buffer buf.
+func (dns *Msg) packBufferWithCompressionMap(buf []byte, compression compressionMap, compress bool) (msg []byte, err error) {
+ if dns.Rcode < 0 || dns.Rcode > 0xFFF {
+ return nil, ErrRcode
+ }
+
+ // Set extended rcode unconditionally if we have an opt, this will allow
+ // reseting the extended rcode bits if they need to.
+ if opt := dns.IsEdns0(); opt != nil {
+ opt.SetExtendedRcode(uint16(dns.Rcode))
+ } else if dns.Rcode > 0xF {
+ // If Rcode is an extended one and opt is nil, error out.
+ return nil, ErrExtendedRcode
+ }
+
+ // Convert convenient Msg into wire-like Header.
+ var dh Header
+ dh.Id = dns.Id
+ dh.Bits = uint16(dns.Opcode)<<11 | uint16(dns.Rcode&0xF)
+ if dns.Response {
+ dh.Bits |= _QR
+ }
+ if dns.Authoritative {
+ dh.Bits |= _AA
+ }
+ if dns.Truncated {
+ dh.Bits |= _TC
+ }
+ if dns.RecursionDesired {
+ dh.Bits |= _RD
+ }
+ if dns.RecursionAvailable {
+ dh.Bits |= _RA
+ }
+ if dns.Zero {
+ dh.Bits |= _Z
+ }
+ if dns.AuthenticatedData {
+ dh.Bits |= _AD
+ }
+ if dns.CheckingDisabled {
+ dh.Bits |= _CD
+ }
+
+ dh.Qdcount = uint16(len(dns.Question))
+ dh.Ancount = uint16(len(dns.Answer))
+ dh.Nscount = uint16(len(dns.Ns))
+ dh.Arcount = uint16(len(dns.Extra))
+
+ // We need the uncompressed length here, because we first pack it and then compress it.
+ msg = buf
+ uncompressedLen := msgLenWithCompressionMap(dns, nil)
+ if packLen := uncompressedLen + 1; len(msg) < packLen {
+ msg = make([]byte, packLen)
+ }
+
+ // Pack it in: header and then the pieces.
+ off := 0
+ off, err = dh.pack(msg, off, compression, compress)
+ if err != nil {
+ return nil, err
+ }
+ for _, r := range dns.Question {
+ off, err = r.pack(msg, off, compression, compress)
+ if err != nil {
+ return nil, err
+ }
+ }
+ for _, r := range dns.Answer {
+ _, off, err = packRR(r, msg, off, compression, compress)
+ if err != nil {
+ return nil, err
+ }
+ }
+ for _, r := range dns.Ns {
+ _, off, err = packRR(r, msg, off, compression, compress)
+ if err != nil {
+ return nil, err
+ }
+ }
+ for _, r := range dns.Extra {
+ _, off, err = packRR(r, msg, off, compression, compress)
+ if err != nil {
+ return nil, err
+ }
+ }
+ return msg[:off], nil
+}
+
+func (dns *Msg) unpack(dh Header, msg []byte, off int) (err error) {
+ // If we are at the end of the message we should return *just* the
+ // header. This can still be useful to the caller. 9.9.9.9 sends these
+ // when responding with REFUSED for instance.
+ if off == len(msg) {
+ // reset sections before returning
+ dns.Question, dns.Answer, dns.Ns, dns.Extra = nil, nil, nil, nil
+ return nil
+ }
+
+ // Qdcount, Ancount, Nscount, Arcount can't be trusted, as they are
+ // attacker controlled. This means we can't use them to pre-allocate
+ // slices.
+ dns.Question = nil
+ for i := 0; i < int(dh.Qdcount); i++ {
+ off1 := off
+ var q Question
+ q, off, err = unpackQuestion(msg, off)
+ if err != nil {
+ return err
+ }
+ if off1 == off { // Offset does not increase anymore, dh.Qdcount is a lie!
+ dh.Qdcount = uint16(i)
+ break
+ }
+ dns.Question = append(dns.Question, q)
+ }
+
+ dns.Answer, off, err = unpackRRslice(int(dh.Ancount), msg, off)
+ // The header counts might have been wrong so we need to update it
+ dh.Ancount = uint16(len(dns.Answer))
+ if err == nil {
+ dns.Ns, off, err = unpackRRslice(int(dh.Nscount), msg, off)
+ }
+ // The header counts might have been wrong so we need to update it
+ dh.Nscount = uint16(len(dns.Ns))
+ if err == nil {
+ dns.Extra, off, err = unpackRRslice(int(dh.Arcount), msg, off)
+ }
+ // The header counts might have been wrong so we need to update it
+ dh.Arcount = uint16(len(dns.Extra))
+
+ // Set extended Rcode
+ if opt := dns.IsEdns0(); opt != nil {
+ dns.Rcode |= opt.ExtendedRcode()
+ }
+
+ if off != len(msg) {
+ // TODO(miek) make this an error?
+ // use PackOpt to let people tell how detailed the error reporting should be?
+ // println("dns: extra bytes in dns packet", off, "<", len(msg))
+ }
+ return err
+
+}
+
+// Unpack unpacks a binary message to a Msg structure.
+func (dns *Msg) Unpack(msg []byte) (err error) {
+ dh, off, err := unpackMsgHdr(msg, 0)
+ if err != nil {
+ return err
+ }
+
+ dns.setHdr(dh)
+ return dns.unpack(dh, msg, off)
+}
+
+// Convert a complete message to a string with dig-like output.
+func (dns *Msg) String() string {
+ if dns == nil {
+ return " MsgHdr"
+ }
+ s := dns.MsgHdr.String() + " "
+ s += "QUERY: " + strconv.Itoa(len(dns.Question)) + ", "
+ s += "ANSWER: " + strconv.Itoa(len(dns.Answer)) + ", "
+ s += "AUTHORITY: " + strconv.Itoa(len(dns.Ns)) + ", "
+ s += "ADDITIONAL: " + strconv.Itoa(len(dns.Extra)) + "\n"
+ if len(dns.Question) > 0 {
+ s += "\n;; QUESTION SECTION:\n"
+ for _, r := range dns.Question {
+ s += r.String() + "\n"
+ }
+ }
+ if len(dns.Answer) > 0 {
+ s += "\n;; ANSWER SECTION:\n"
+ for _, r := range dns.Answer {
+ if r != nil {
+ s += r.String() + "\n"
+ }
+ }
+ }
+ if len(dns.Ns) > 0 {
+ s += "\n;; AUTHORITY SECTION:\n"
+ for _, r := range dns.Ns {
+ if r != nil {
+ s += r.String() + "\n"
+ }
+ }
+ }
+ if len(dns.Extra) > 0 {
+ s += "\n;; ADDITIONAL SECTION:\n"
+ for _, r := range dns.Extra {
+ if r != nil {
+ s += r.String() + "\n"
+ }
+ }
+ }
+ return s
+}
+
+// isCompressible returns whether the msg may be compressible.
+func (dns *Msg) isCompressible() bool {
+ // If we only have one question, there is nothing we can ever compress.
+ return len(dns.Question) > 1 || len(dns.Answer) > 0 ||
+ len(dns.Ns) > 0 || len(dns.Extra) > 0
+}
+
+// Len returns the message length when in (un)compressed wire format.
+// If dns.Compress is true compression it is taken into account. Len()
+// is provided to be a faster way to get the size of the resulting packet,
+// than packing it, measuring the size and discarding the buffer.
+func (dns *Msg) Len() int {
+ // If this message can't be compressed, avoid filling the
+ // compression map and creating garbage.
+ if dns.Compress && dns.isCompressible() {
+ compression := make(map[string]struct{})
+ return msgLenWithCompressionMap(dns, compression)
+ }
+
+ return msgLenWithCompressionMap(dns, nil)
+}
+
+func msgLenWithCompressionMap(dns *Msg, compression map[string]struct{}) int {
+ l := headerSize
+
+ for _, r := range dns.Question {
+ l += r.len(l, compression)
+ }
+ for _, r := range dns.Answer {
+ if r != nil {
+ l += r.len(l, compression)
+ }
+ }
+ for _, r := range dns.Ns {
+ if r != nil {
+ l += r.len(l, compression)
+ }
+ }
+ for _, r := range dns.Extra {
+ if r != nil {
+ l += r.len(l, compression)
+ }
+ }
+
+ return l
+}
+
+func domainNameLen(s string, off int, compression map[string]struct{}, compress bool) int {
+ if s == "" || s == "." {
+ return 1
+ }
+
+ escaped := strings.Contains(s, "\\")
+
+ if compression != nil && (compress || off < maxCompressionOffset) {
+ // compressionLenSearch will insert the entry into the compression
+ // map if it doesn't contain it.
+ if l, ok := compressionLenSearch(compression, s, off); ok && compress {
+ if escaped {
+ return escapedNameLen(s[:l]) + 2
+ }
+
+ return l + 2
+ }
+ }
+
+ if escaped {
+ return escapedNameLen(s) + 1
+ }
+
+ return len(s) + 1
+}
+
+func escapedNameLen(s string) int {
+ nameLen := len(s)
+ for i := 0; i < len(s); i++ {
+ if s[i] != '\\' {
+ continue
+ }
+
+ if i+3 < len(s) && isDigit(s[i+1]) && isDigit(s[i+2]) && isDigit(s[i+3]) {
+ nameLen -= 3
+ i += 3
+ } else {
+ nameLen--
+ i++
+ }
+ }
+
+ return nameLen
+}
+
+func compressionLenSearch(c map[string]struct{}, s string, msgOff int) (int, bool) {
+ for off, end := 0, false; !end; off, end = NextLabel(s, off) {
+ if _, ok := c[s[off:]]; ok {
+ return off, true
+ }
+
+ if msgOff+off < maxCompressionOffset {
+ c[s[off:]] = struct{}{}
+ }
+ }
+
+ return 0, false
+}
+
+// Copy returns a new RR which is a deep-copy of r.
+func Copy(r RR) RR { return r.copy() }
+
+// Len returns the length (in octets) of the uncompressed RR in wire format.
+func Len(r RR) int { return r.len(0, nil) }
+
+// Copy returns a new *Msg which is a deep-copy of dns.
+func (dns *Msg) Copy() *Msg { return dns.CopyTo(new(Msg)) }
+
+// CopyTo copies the contents to the provided message using a deep-copy and returns the copy.
+func (dns *Msg) CopyTo(r1 *Msg) *Msg {
+ r1.MsgHdr = dns.MsgHdr
+ r1.Compress = dns.Compress
+
+ if len(dns.Question) > 0 {
+ r1.Question = make([]Question, len(dns.Question))
+ copy(r1.Question, dns.Question) // TODO(miek): Question is an immutable value, ok to do a shallow-copy
+ }
+
+ rrArr := make([]RR, len(dns.Answer)+len(dns.Ns)+len(dns.Extra))
+ r1.Answer, rrArr = rrArr[:0:len(dns.Answer)], rrArr[len(dns.Answer):]
+ r1.Ns, rrArr = rrArr[:0:len(dns.Ns)], rrArr[len(dns.Ns):]
+ r1.Extra = rrArr[:0:len(dns.Extra)]
+
+ for _, r := range dns.Answer {
+ r1.Answer = append(r1.Answer, r.copy())
+ }
+
+ for _, r := range dns.Ns {
+ r1.Ns = append(r1.Ns, r.copy())
+ }
+
+ for _, r := range dns.Extra {
+ r1.Extra = append(r1.Extra, r.copy())
+ }
+
+ return r1
+}
+
+func (q *Question) pack(msg []byte, off int, compression compressionMap, compress bool) (int, error) {
+ off, err := packDomainName(q.Name, msg, off, compression, compress)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(q.Qtype, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(q.Qclass, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func unpackQuestion(msg []byte, off int) (Question, int, error) {
+ var (
+ q Question
+ err error
+ )
+ q.Name, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return q, off, err
+ }
+ if off == len(msg) {
+ return q, off, nil
+ }
+ q.Qtype, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return q, off, err
+ }
+ if off == len(msg) {
+ return q, off, nil
+ }
+ q.Qclass, off, err = unpackUint16(msg, off)
+ if off == len(msg) {
+ return q, off, nil
+ }
+ return q, off, err
+}
+
+func (dh *Header) pack(msg []byte, off int, compression compressionMap, compress bool) (int, error) {
+ off, err := packUint16(dh.Id, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(dh.Bits, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(dh.Qdcount, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(dh.Ancount, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(dh.Nscount, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(dh.Arcount, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func unpackMsgHdr(msg []byte, off int) (Header, int, error) {
+ var (
+ dh Header
+ err error
+ )
+ dh.Id, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return dh, off, err
+ }
+ dh.Bits, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return dh, off, err
+ }
+ dh.Qdcount, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return dh, off, err
+ }
+ dh.Ancount, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return dh, off, err
+ }
+ dh.Nscount, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return dh, off, err
+ }
+ dh.Arcount, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return dh, off, err
+ }
+ return dh, off, nil
+}
+
+// setHdr set the header in the dns using the binary data in dh.
+func (dns *Msg) setHdr(dh Header) {
+ dns.Id = dh.Id
+ dns.Response = dh.Bits&_QR != 0
+ dns.Opcode = int(dh.Bits>>11) & 0xF
+ dns.Authoritative = dh.Bits&_AA != 0
+ dns.Truncated = dh.Bits&_TC != 0
+ dns.RecursionDesired = dh.Bits&_RD != 0
+ dns.RecursionAvailable = dh.Bits&_RA != 0
+ dns.Zero = dh.Bits&_Z != 0 // _Z covers the zero bit, which should be zero; not sure why we set it to the opposite.
+ dns.AuthenticatedData = dh.Bits&_AD != 0
+ dns.CheckingDisabled = dh.Bits&_CD != 0
+ dns.Rcode = int(dh.Bits & 0xF)
+}
diff --git a/vendor/github.com/miekg/dns/msg_helpers.go b/vendor/github.com/miekg/dns/msg_helpers.go
new file mode 100644
index 0000000..98fadc3
--- /dev/null
+++ b/vendor/github.com/miekg/dns/msg_helpers.go
@@ -0,0 +1,810 @@
+package dns
+
+import (
+ "encoding/base32"
+ "encoding/base64"
+ "encoding/binary"
+ "encoding/hex"
+ "net"
+ "strings"
+)
+
+// helper functions called from the generated zmsg.go
+
+// These function are named after the tag to help pack/unpack, if there is no tag it is the name
+// of the type they pack/unpack (string, int, etc). We prefix all with unpackData or packData, so packDataA or
+// packDataDomainName.
+
+func unpackDataA(msg []byte, off int) (net.IP, int, error) {
+ if off+net.IPv4len > len(msg) {
+ return nil, len(msg), &Error{err: "overflow unpacking a"}
+ }
+ a := append(make(net.IP, 0, net.IPv4len), msg[off:off+net.IPv4len]...)
+ off += net.IPv4len
+ return a, off, nil
+}
+
+func packDataA(a net.IP, msg []byte, off int) (int, error) {
+ switch len(a) {
+ case net.IPv4len, net.IPv6len:
+ // It must be a slice of 4, even if it is 16, we encode only the first 4
+ if off+net.IPv4len > len(msg) {
+ return len(msg), &Error{err: "overflow packing a"}
+ }
+
+ copy(msg[off:], a.To4())
+ off += net.IPv4len
+ case 0:
+ // Allowed, for dynamic updates.
+ default:
+ return len(msg), &Error{err: "overflow packing a"}
+ }
+ return off, nil
+}
+
+func unpackDataAAAA(msg []byte, off int) (net.IP, int, error) {
+ if off+net.IPv6len > len(msg) {
+ return nil, len(msg), &Error{err: "overflow unpacking aaaa"}
+ }
+ aaaa := append(make(net.IP, 0, net.IPv6len), msg[off:off+net.IPv6len]...)
+ off += net.IPv6len
+ return aaaa, off, nil
+}
+
+func packDataAAAA(aaaa net.IP, msg []byte, off int) (int, error) {
+ switch len(aaaa) {
+ case net.IPv6len:
+ if off+net.IPv6len > len(msg) {
+ return len(msg), &Error{err: "overflow packing aaaa"}
+ }
+
+ copy(msg[off:], aaaa)
+ off += net.IPv6len
+ case 0:
+ // Allowed, dynamic updates.
+ default:
+ return len(msg), &Error{err: "overflow packing aaaa"}
+ }
+ return off, nil
+}
+
+// unpackHeader unpacks an RR header, returning the offset to the end of the header and a
+// re-sliced msg according to the expected length of the RR.
+func unpackHeader(msg []byte, off int) (rr RR_Header, off1 int, truncmsg []byte, err error) {
+ hdr := RR_Header{}
+ if off == len(msg) {
+ return hdr, off, msg, nil
+ }
+
+ hdr.Name, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return hdr, len(msg), msg, err
+ }
+ hdr.Rrtype, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return hdr, len(msg), msg, err
+ }
+ hdr.Class, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return hdr, len(msg), msg, err
+ }
+ hdr.Ttl, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return hdr, len(msg), msg, err
+ }
+ hdr.Rdlength, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return hdr, len(msg), msg, err
+ }
+ msg, err = truncateMsgFromRdlength(msg, off, hdr.Rdlength)
+ return hdr, off, msg, err
+}
+
+// packHeader packs an RR header, returning the offset to the end of the header.
+// See PackDomainName for documentation about the compression.
+func (hdr RR_Header) packHeader(msg []byte, off int, compression compressionMap, compress bool) (int, error) {
+ if off == len(msg) {
+ return off, nil
+ }
+
+ off, err := packDomainName(hdr.Name, msg, off, compression, compress)
+ if err != nil {
+ return len(msg), err
+ }
+ off, err = packUint16(hdr.Rrtype, msg, off)
+ if err != nil {
+ return len(msg), err
+ }
+ off, err = packUint16(hdr.Class, msg, off)
+ if err != nil {
+ return len(msg), err
+ }
+ off, err = packUint32(hdr.Ttl, msg, off)
+ if err != nil {
+ return len(msg), err
+ }
+ off, err = packUint16(0, msg, off) // The RDLENGTH field will be set later in packRR.
+ if err != nil {
+ return len(msg), err
+ }
+ return off, nil
+}
+
+// helper helper functions.
+
+// truncateMsgFromRdLength truncates msg to match the expected length of the RR.
+// Returns an error if msg is smaller than the expected size.
+func truncateMsgFromRdlength(msg []byte, off int, rdlength uint16) (truncmsg []byte, err error) {
+ lenrd := off + int(rdlength)
+ if lenrd > len(msg) {
+ return msg, &Error{err: "overflowing header size"}
+ }
+ return msg[:lenrd], nil
+}
+
+var base32HexNoPadEncoding = base32.HexEncoding.WithPadding(base32.NoPadding)
+
+func fromBase32(s []byte) (buf []byte, err error) {
+ for i, b := range s {
+ if b >= 'a' && b <= 'z' {
+ s[i] = b - 32
+ }
+ }
+ buflen := base32HexNoPadEncoding.DecodedLen(len(s))
+ buf = make([]byte, buflen)
+ n, err := base32HexNoPadEncoding.Decode(buf, s)
+ buf = buf[:n]
+ return
+}
+
+func toBase32(b []byte) string {
+ return base32HexNoPadEncoding.EncodeToString(b)
+}
+
+func fromBase64(s []byte) (buf []byte, err error) {
+ buflen := base64.StdEncoding.DecodedLen(len(s))
+ buf = make([]byte, buflen)
+ n, err := base64.StdEncoding.Decode(buf, s)
+ buf = buf[:n]
+ return
+}
+
+func toBase64(b []byte) string { return base64.StdEncoding.EncodeToString(b) }
+
+// dynamicUpdate returns true if the Rdlength is zero.
+func noRdata(h RR_Header) bool { return h.Rdlength == 0 }
+
+func unpackUint8(msg []byte, off int) (i uint8, off1 int, err error) {
+ if off+1 > len(msg) {
+ return 0, len(msg), &Error{err: "overflow unpacking uint8"}
+ }
+ return msg[off], off + 1, nil
+}
+
+func packUint8(i uint8, msg []byte, off int) (off1 int, err error) {
+ if off+1 > len(msg) {
+ return len(msg), &Error{err: "overflow packing uint8"}
+ }
+ msg[off] = i
+ return off + 1, nil
+}
+
+func unpackUint16(msg []byte, off int) (i uint16, off1 int, err error) {
+ if off+2 > len(msg) {
+ return 0, len(msg), &Error{err: "overflow unpacking uint16"}
+ }
+ return binary.BigEndian.Uint16(msg[off:]), off + 2, nil
+}
+
+func packUint16(i uint16, msg []byte, off int) (off1 int, err error) {
+ if off+2 > len(msg) {
+ return len(msg), &Error{err: "overflow packing uint16"}
+ }
+ binary.BigEndian.PutUint16(msg[off:], i)
+ return off + 2, nil
+}
+
+func unpackUint32(msg []byte, off int) (i uint32, off1 int, err error) {
+ if off+4 > len(msg) {
+ return 0, len(msg), &Error{err: "overflow unpacking uint32"}
+ }
+ return binary.BigEndian.Uint32(msg[off:]), off + 4, nil
+}
+
+func packUint32(i uint32, msg []byte, off int) (off1 int, err error) {
+ if off+4 > len(msg) {
+ return len(msg), &Error{err: "overflow packing uint32"}
+ }
+ binary.BigEndian.PutUint32(msg[off:], i)
+ return off + 4, nil
+}
+
+func unpackUint48(msg []byte, off int) (i uint64, off1 int, err error) {
+ if off+6 > len(msg) {
+ return 0, len(msg), &Error{err: "overflow unpacking uint64 as uint48"}
+ }
+ // Used in TSIG where the last 48 bits are occupied, so for now, assume a uint48 (6 bytes)
+ i = uint64(msg[off])<<40 | uint64(msg[off+1])<<32 | uint64(msg[off+2])<<24 | uint64(msg[off+3])<<16 |
+ uint64(msg[off+4])<<8 | uint64(msg[off+5])
+ off += 6
+ return i, off, nil
+}
+
+func packUint48(i uint64, msg []byte, off int) (off1 int, err error) {
+ if off+6 > len(msg) {
+ return len(msg), &Error{err: "overflow packing uint64 as uint48"}
+ }
+ msg[off] = byte(i >> 40)
+ msg[off+1] = byte(i >> 32)
+ msg[off+2] = byte(i >> 24)
+ msg[off+3] = byte(i >> 16)
+ msg[off+4] = byte(i >> 8)
+ msg[off+5] = byte(i)
+ off += 6
+ return off, nil
+}
+
+func unpackUint64(msg []byte, off int) (i uint64, off1 int, err error) {
+ if off+8 > len(msg) {
+ return 0, len(msg), &Error{err: "overflow unpacking uint64"}
+ }
+ return binary.BigEndian.Uint64(msg[off:]), off + 8, nil
+}
+
+func packUint64(i uint64, msg []byte, off int) (off1 int, err error) {
+ if off+8 > len(msg) {
+ return len(msg), &Error{err: "overflow packing uint64"}
+ }
+ binary.BigEndian.PutUint64(msg[off:], i)
+ off += 8
+ return off, nil
+}
+
+func unpackString(msg []byte, off int) (string, int, error) {
+ if off+1 > len(msg) {
+ return "", off, &Error{err: "overflow unpacking txt"}
+ }
+ l := int(msg[off])
+ off++
+ if off+l > len(msg) {
+ return "", off, &Error{err: "overflow unpacking txt"}
+ }
+ var s strings.Builder
+ consumed := 0
+ for i, b := range msg[off : off+l] {
+ switch {
+ case b == '"' || b == '\\':
+ if consumed == 0 {
+ s.Grow(l * 2)
+ }
+ s.Write(msg[off+consumed : off+i])
+ s.WriteByte('\\')
+ s.WriteByte(b)
+ consumed = i + 1
+ case b < ' ' || b > '~': // unprintable
+ if consumed == 0 {
+ s.Grow(l * 2)
+ }
+ s.Write(msg[off+consumed : off+i])
+ s.WriteString(escapeByte(b))
+ consumed = i + 1
+ }
+ }
+ if consumed == 0 { // no escaping needed
+ return string(msg[off : off+l]), off + l, nil
+ }
+ s.Write(msg[off+consumed : off+l])
+ return s.String(), off + l, nil
+}
+
+func packString(s string, msg []byte, off int) (int, error) {
+ txtTmp := make([]byte, 256*4+1)
+ off, err := packTxtString(s, msg, off, txtTmp)
+ if err != nil {
+ return len(msg), err
+ }
+ return off, nil
+}
+
+func unpackStringBase32(msg []byte, off, end int) (string, int, error) {
+ if end > len(msg) {
+ return "", len(msg), &Error{err: "overflow unpacking base32"}
+ }
+ s := toBase32(msg[off:end])
+ return s, end, nil
+}
+
+func packStringBase32(s string, msg []byte, off int) (int, error) {
+ b32, err := fromBase32([]byte(s))
+ if err != nil {
+ return len(msg), err
+ }
+ if off+len(b32) > len(msg) {
+ return len(msg), &Error{err: "overflow packing base32"}
+ }
+ copy(msg[off:off+len(b32)], b32)
+ off += len(b32)
+ return off, nil
+}
+
+func unpackStringBase64(msg []byte, off, end int) (string, int, error) {
+ // Rest of the RR is base64 encoded value, so we don't need an explicit length
+ // to be set. Thus far all RR's that have base64 encoded fields have those as their
+ // last one. What we do need is the end of the RR!
+ if end > len(msg) {
+ return "", len(msg), &Error{err: "overflow unpacking base64"}
+ }
+ s := toBase64(msg[off:end])
+ return s, end, nil
+}
+
+func packStringBase64(s string, msg []byte, off int) (int, error) {
+ b64, err := fromBase64([]byte(s))
+ if err != nil {
+ return len(msg), err
+ }
+ if off+len(b64) > len(msg) {
+ return len(msg), &Error{err: "overflow packing base64"}
+ }
+ copy(msg[off:off+len(b64)], b64)
+ off += len(b64)
+ return off, nil
+}
+
+func unpackStringHex(msg []byte, off, end int) (string, int, error) {
+ // Rest of the RR is hex encoded value, so we don't need an explicit length
+ // to be set. NSEC and TSIG have hex fields with a length field.
+ // What we do need is the end of the RR!
+ if end > len(msg) {
+ return "", len(msg), &Error{err: "overflow unpacking hex"}
+ }
+
+ s := hex.EncodeToString(msg[off:end])
+ return s, end, nil
+}
+
+func packStringHex(s string, msg []byte, off int) (int, error) {
+ h, err := hex.DecodeString(s)
+ if err != nil {
+ return len(msg), err
+ }
+ if off+len(h) > len(msg) {
+ return len(msg), &Error{err: "overflow packing hex"}
+ }
+ copy(msg[off:off+len(h)], h)
+ off += len(h)
+ return off, nil
+}
+
+func unpackStringAny(msg []byte, off, end int) (string, int, error) {
+ if end > len(msg) {
+ return "", len(msg), &Error{err: "overflow unpacking anything"}
+ }
+ return string(msg[off:end]), end, nil
+}
+
+func packStringAny(s string, msg []byte, off int) (int, error) {
+ if off+len(s) > len(msg) {
+ return len(msg), &Error{err: "overflow packing anything"}
+ }
+ copy(msg[off:off+len(s)], s)
+ off += len(s)
+ return off, nil
+}
+
+func unpackStringTxt(msg []byte, off int) ([]string, int, error) {
+ txt, off, err := unpackTxt(msg, off)
+ if err != nil {
+ return nil, len(msg), err
+ }
+ return txt, off, nil
+}
+
+func packStringTxt(s []string, msg []byte, off int) (int, error) {
+ txtTmp := make([]byte, 256*4+1) // If the whole string consists out of \DDD we need this many.
+ off, err := packTxt(s, msg, off, txtTmp)
+ if err != nil {
+ return len(msg), err
+ }
+ return off, nil
+}
+
+func unpackDataOpt(msg []byte, off int) ([]EDNS0, int, error) {
+ var edns []EDNS0
+Option:
+ var code uint16
+ if off+4 > len(msg) {
+ return nil, len(msg), &Error{err: "overflow unpacking opt"}
+ }
+ code = binary.BigEndian.Uint16(msg[off:])
+ off += 2
+ optlen := binary.BigEndian.Uint16(msg[off:])
+ off += 2
+ if off+int(optlen) > len(msg) {
+ return nil, len(msg), &Error{err: "overflow unpacking opt"}
+ }
+ switch code {
+ case EDNS0NSID:
+ e := new(EDNS0_NSID)
+ if err := e.unpack(msg[off : off+int(optlen)]); err != nil {
+ return nil, len(msg), err
+ }
+ edns = append(edns, e)
+ off += int(optlen)
+ case EDNS0SUBNET:
+ e := new(EDNS0_SUBNET)
+ if err := e.unpack(msg[off : off+int(optlen)]); err != nil {
+ return nil, len(msg), err
+ }
+ edns = append(edns, e)
+ off += int(optlen)
+ case EDNS0COOKIE:
+ e := new(EDNS0_COOKIE)
+ if err := e.unpack(msg[off : off+int(optlen)]); err != nil {
+ return nil, len(msg), err
+ }
+ edns = append(edns, e)
+ off += int(optlen)
+ case EDNS0EXPIRE:
+ e := new(EDNS0_EXPIRE)
+ if err := e.unpack(msg[off : off+int(optlen)]); err != nil {
+ return nil, len(msg), err
+ }
+ edns = append(edns, e)
+ off += int(optlen)
+ case EDNS0UL:
+ e := new(EDNS0_UL)
+ if err := e.unpack(msg[off : off+int(optlen)]); err != nil {
+ return nil, len(msg), err
+ }
+ edns = append(edns, e)
+ off += int(optlen)
+ case EDNS0LLQ:
+ e := new(EDNS0_LLQ)
+ if err := e.unpack(msg[off : off+int(optlen)]); err != nil {
+ return nil, len(msg), err
+ }
+ edns = append(edns, e)
+ off += int(optlen)
+ case EDNS0DAU:
+ e := new(EDNS0_DAU)
+ if err := e.unpack(msg[off : off+int(optlen)]); err != nil {
+ return nil, len(msg), err
+ }
+ edns = append(edns, e)
+ off += int(optlen)
+ case EDNS0DHU:
+ e := new(EDNS0_DHU)
+ if err := e.unpack(msg[off : off+int(optlen)]); err != nil {
+ return nil, len(msg), err
+ }
+ edns = append(edns, e)
+ off += int(optlen)
+ case EDNS0N3U:
+ e := new(EDNS0_N3U)
+ if err := e.unpack(msg[off : off+int(optlen)]); err != nil {
+ return nil, len(msg), err
+ }
+ edns = append(edns, e)
+ off += int(optlen)
+ case EDNS0PADDING:
+ e := new(EDNS0_PADDING)
+ if err := e.unpack(msg[off : off+int(optlen)]); err != nil {
+ return nil, len(msg), err
+ }
+ edns = append(edns, e)
+ off += int(optlen)
+ default:
+ e := new(EDNS0_LOCAL)
+ e.Code = code
+ if err := e.unpack(msg[off : off+int(optlen)]); err != nil {
+ return nil, len(msg), err
+ }
+ edns = append(edns, e)
+ off += int(optlen)
+ }
+
+ if off < len(msg) {
+ goto Option
+ }
+
+ return edns, off, nil
+}
+
+func packDataOpt(options []EDNS0, msg []byte, off int) (int, error) {
+ for _, el := range options {
+ b, err := el.pack()
+ if err != nil || off+4 > len(msg) {
+ return len(msg), &Error{err: "overflow packing opt"}
+ }
+ binary.BigEndian.PutUint16(msg[off:], el.Option()) // Option code
+ binary.BigEndian.PutUint16(msg[off+2:], uint16(len(b))) // Length
+ off += 4
+ if off+len(b) > len(msg) {
+ copy(msg[off:], b)
+ off = len(msg)
+ continue
+ }
+ // Actual data
+ copy(msg[off:off+len(b)], b)
+ off += len(b)
+ }
+ return off, nil
+}
+
+func unpackStringOctet(msg []byte, off int) (string, int, error) {
+ s := string(msg[off:])
+ return s, len(msg), nil
+}
+
+func packStringOctet(s string, msg []byte, off int) (int, error) {
+ txtTmp := make([]byte, 256*4+1)
+ off, err := packOctetString(s, msg, off, txtTmp)
+ if err != nil {
+ return len(msg), err
+ }
+ return off, nil
+}
+
+func unpackDataNsec(msg []byte, off int) ([]uint16, int, error) {
+ var nsec []uint16
+ length, window, lastwindow := 0, 0, -1
+ for off < len(msg) {
+ if off+2 > len(msg) {
+ return nsec, len(msg), &Error{err: "overflow unpacking nsecx"}
+ }
+ window = int(msg[off])
+ length = int(msg[off+1])
+ off += 2
+ if window <= lastwindow {
+ // RFC 4034: Blocks are present in the NSEC RR RDATA in
+ // increasing numerical order.
+ return nsec, len(msg), &Error{err: "out of order NSEC block"}
+ }
+ if length == 0 {
+ // RFC 4034: Blocks with no types present MUST NOT be included.
+ return nsec, len(msg), &Error{err: "empty NSEC block"}
+ }
+ if length > 32 {
+ return nsec, len(msg), &Error{err: "NSEC block too long"}
+ }
+ if off+length > len(msg) {
+ return nsec, len(msg), &Error{err: "overflowing NSEC block"}
+ }
+
+ // Walk the bytes in the window and extract the type bits
+ for j, b := range msg[off : off+length] {
+ // Check the bits one by one, and set the type
+ if b&0x80 == 0x80 {
+ nsec = append(nsec, uint16(window*256+j*8+0))
+ }
+ if b&0x40 == 0x40 {
+ nsec = append(nsec, uint16(window*256+j*8+1))
+ }
+ if b&0x20 == 0x20 {
+ nsec = append(nsec, uint16(window*256+j*8+2))
+ }
+ if b&0x10 == 0x10 {
+ nsec = append(nsec, uint16(window*256+j*8+3))
+ }
+ if b&0x8 == 0x8 {
+ nsec = append(nsec, uint16(window*256+j*8+4))
+ }
+ if b&0x4 == 0x4 {
+ nsec = append(nsec, uint16(window*256+j*8+5))
+ }
+ if b&0x2 == 0x2 {
+ nsec = append(nsec, uint16(window*256+j*8+6))
+ }
+ if b&0x1 == 0x1 {
+ nsec = append(nsec, uint16(window*256+j*8+7))
+ }
+ }
+ off += length
+ lastwindow = window
+ }
+ return nsec, off, nil
+}
+
+// typeBitMapLen is a helper function which computes the "maximum" length of
+// a the NSEC Type BitMap field.
+func typeBitMapLen(bitmap []uint16) int {
+ var l int
+ var lastwindow, lastlength uint16
+ for _, t := range bitmap {
+ window := t / 256
+ length := (t-window*256)/8 + 1
+ if window > lastwindow && lastlength != 0 { // New window, jump to the new offset
+ l += int(lastlength) + 2
+ lastlength = 0
+ }
+ if window < lastwindow || length < lastlength {
+ // packDataNsec would return Error{err: "nsec bits out of order"} here, but
+ // when computing the length, we want do be liberal.
+ continue
+ }
+ lastwindow, lastlength = window, length
+ }
+ l += int(lastlength) + 2
+ return l
+}
+
+func packDataNsec(bitmap []uint16, msg []byte, off int) (int, error) {
+ if len(bitmap) == 0 {
+ return off, nil
+ }
+ var lastwindow, lastlength uint16
+ for _, t := range bitmap {
+ window := t / 256
+ length := (t-window*256)/8 + 1
+ if window > lastwindow && lastlength != 0 { // New window, jump to the new offset
+ off += int(lastlength) + 2
+ lastlength = 0
+ }
+ if window < lastwindow || length < lastlength {
+ return len(msg), &Error{err: "nsec bits out of order"}
+ }
+ if off+2+int(length) > len(msg) {
+ return len(msg), &Error{err: "overflow packing nsec"}
+ }
+ // Setting the window #
+ msg[off] = byte(window)
+ // Setting the octets length
+ msg[off+1] = byte(length)
+ // Setting the bit value for the type in the right octet
+ msg[off+1+int(length)] |= byte(1 << (7 - t%8))
+ lastwindow, lastlength = window, length
+ }
+ off += int(lastlength) + 2
+ return off, nil
+}
+
+func unpackDataDomainNames(msg []byte, off, end int) ([]string, int, error) {
+ var (
+ servers []string
+ s string
+ err error
+ )
+ if end > len(msg) {
+ return nil, len(msg), &Error{err: "overflow unpacking domain names"}
+ }
+ for off < end {
+ s, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return servers, len(msg), err
+ }
+ servers = append(servers, s)
+ }
+ return servers, off, nil
+}
+
+func packDataDomainNames(names []string, msg []byte, off int, compression compressionMap, compress bool) (int, error) {
+ var err error
+ for _, name := range names {
+ off, err = packDomainName(name, msg, off, compression, compress)
+ if err != nil {
+ return len(msg), err
+ }
+ }
+ return off, nil
+}
+
+func packDataApl(data []APLPrefix, msg []byte, off int) (int, error) {
+ var err error
+ for i := range data {
+ off, err = packDataAplPrefix(&data[i], msg, off)
+ if err != nil {
+ return len(msg), err
+ }
+ }
+ return off, nil
+}
+
+func packDataAplPrefix(p *APLPrefix, msg []byte, off int) (int, error) {
+ if len(p.Network.IP) != len(p.Network.Mask) {
+ return len(msg), &Error{err: "address and mask lengths don't match"}
+ }
+
+ var err error
+ prefix, _ := p.Network.Mask.Size()
+ addr := p.Network.IP.Mask(p.Network.Mask)[:(prefix+7)/8]
+
+ switch len(p.Network.IP) {
+ case net.IPv4len:
+ off, err = packUint16(1, msg, off)
+ case net.IPv6len:
+ off, err = packUint16(2, msg, off)
+ default:
+ err = &Error{err: "unrecognized address family"}
+ }
+ if err != nil {
+ return len(msg), err
+ }
+
+ off, err = packUint8(uint8(prefix), msg, off)
+ if err != nil {
+ return len(msg), err
+ }
+
+ var n uint8
+ if p.Negation {
+ n = 0x80
+ }
+ adflen := uint8(len(addr)) & 0x7f
+ off, err = packUint8(n|adflen, msg, off)
+ if err != nil {
+ return len(msg), err
+ }
+
+ if off+len(addr) > len(msg) {
+ return len(msg), &Error{err: "overflow packing APL prefix"}
+ }
+ off += copy(msg[off:], addr)
+
+ return off, nil
+}
+
+func unpackDataApl(msg []byte, off int) ([]APLPrefix, int, error) {
+ var result []APLPrefix
+ for off < len(msg) {
+ prefix, end, err := unpackDataAplPrefix(msg, off)
+ if err != nil {
+ return nil, len(msg), err
+ }
+ off = end
+ result = append(result, prefix)
+ }
+ return result, off, nil
+}
+
+func unpackDataAplPrefix(msg []byte, off int) (APLPrefix, int, error) {
+ family, off, err := unpackUint16(msg, off)
+ if err != nil {
+ return APLPrefix{}, len(msg), &Error{err: "overflow unpacking APL prefix"}
+ }
+ prefix, off, err := unpackUint8(msg, off)
+ if err != nil {
+ return APLPrefix{}, len(msg), &Error{err: "overflow unpacking APL prefix"}
+ }
+ nlen, off, err := unpackUint8(msg, off)
+ if err != nil {
+ return APLPrefix{}, len(msg), &Error{err: "overflow unpacking APL prefix"}
+ }
+
+ var ip []byte
+ switch family {
+ case 1:
+ ip = make([]byte, net.IPv4len)
+ case 2:
+ ip = make([]byte, net.IPv6len)
+ default:
+ return APLPrefix{}, len(msg), &Error{err: "unrecognized APL address family"}
+ }
+ if int(prefix) > 8*len(ip) {
+ return APLPrefix{}, len(msg), &Error{err: "APL prefix too long"}
+ }
+
+ afdlen := int(nlen & 0x7f)
+ if (int(prefix)+7)/8 != afdlen {
+ return APLPrefix{}, len(msg), &Error{err: "invalid APL address length"}
+ }
+ if off+afdlen > len(msg) {
+ return APLPrefix{}, len(msg), &Error{err: "overflow unpacking APL address"}
+ }
+ off += copy(ip, msg[off:off+afdlen])
+ if prefix%8 > 0 {
+ last := ip[afdlen-1]
+ zero := uint8(0xff) >> (prefix % 8)
+ if last&zero > 0 {
+ return APLPrefix{}, len(msg), &Error{err: "extra APL address bits"}
+ }
+ }
+
+ return APLPrefix{
+ Negation: (nlen & 0x80) != 0,
+ Network: net.IPNet{
+ IP: ip,
+ Mask: net.CIDRMask(int(prefix), 8*len(ip)),
+ },
+ }, off, nil
+}
diff --git a/vendor/github.com/miekg/dns/msg_truncate.go b/vendor/github.com/miekg/dns/msg_truncate.go
new file mode 100644
index 0000000..89d4075
--- /dev/null
+++ b/vendor/github.com/miekg/dns/msg_truncate.go
@@ -0,0 +1,111 @@
+package dns
+
+// Truncate ensures the reply message will fit into the requested buffer
+// size by removing records that exceed the requested size.
+//
+// It will first check if the reply fits without compression and then with
+// compression. If it won't fit with compression, Truncate then walks the
+// record adding as many records as possible without exceeding the
+// requested buffer size.
+//
+// The TC bit will be set if any records were excluded from the message.
+// This indicates to that the client should retry over TCP.
+//
+// According to RFC 2181, the TC bit should only be set if not all of the
+// "required" RRs can be included in the response. Unfortunately, we have
+// no way of knowing which RRs are required so we set the TC bit if any RR
+// had to be omitted from the response.
+//
+// The appropriate buffer size can be retrieved from the requests OPT
+// record, if present, and is transport specific otherwise. dns.MinMsgSize
+// should be used for UDP requests without an OPT record, and
+// dns.MaxMsgSize for TCP requests without an OPT record.
+func (dns *Msg) Truncate(size int) {
+ if dns.IsTsig() != nil {
+ // To simplify this implementation, we don't perform
+ // truncation on responses with a TSIG record.
+ return
+ }
+
+ // RFC 6891 mandates that the payload size in an OPT record
+ // less than 512 bytes must be treated as equal to 512 bytes.
+ //
+ // For ease of use, we impose that restriction here.
+ if size < 512 {
+ size = 512
+ }
+
+ l := msgLenWithCompressionMap(dns, nil) // uncompressed length
+ if l <= size {
+ // Don't waste effort compressing this message.
+ dns.Compress = false
+ return
+ }
+
+ dns.Compress = true
+
+ edns0 := dns.popEdns0()
+ if edns0 != nil {
+ // Account for the OPT record that gets added at the end,
+ // by subtracting that length from our budget.
+ //
+ // The EDNS(0) OPT record must have the root domain and
+ // it's length is thus unaffected by compression.
+ size -= Len(edns0)
+ }
+
+ compression := make(map[string]struct{})
+
+ l = headerSize
+ for _, r := range dns.Question {
+ l += r.len(l, compression)
+ }
+
+ var numAnswer int
+ if l < size {
+ l, numAnswer = truncateLoop(dns.Answer, size, l, compression)
+ }
+
+ var numNS int
+ if l < size {
+ l, numNS = truncateLoop(dns.Ns, size, l, compression)
+ }
+
+ var numExtra int
+ if l < size {
+ l, numExtra = truncateLoop(dns.Extra, size, l, compression)
+ }
+
+ // See the function documentation for when we set this.
+ dns.Truncated = len(dns.Answer) > numAnswer ||
+ len(dns.Ns) > numNS || len(dns.Extra) > numExtra
+
+ dns.Answer = dns.Answer[:numAnswer]
+ dns.Ns = dns.Ns[:numNS]
+ dns.Extra = dns.Extra[:numExtra]
+
+ if edns0 != nil {
+ // Add the OPT record back onto the additional section.
+ dns.Extra = append(dns.Extra, edns0)
+ }
+}
+
+func truncateLoop(rrs []RR, size, l int, compression map[string]struct{}) (int, int) {
+ for i, r := range rrs {
+ if r == nil {
+ continue
+ }
+
+ l += r.len(l, compression)
+ if l > size {
+ // Return size, rather than l prior to this record,
+ // to prevent any further records being added.
+ return size, i
+ }
+ if l == size {
+ return l, i + 1
+ }
+ }
+
+ return l, len(rrs)
+}
diff --git a/vendor/github.com/miekg/dns/nsecx.go b/vendor/github.com/miekg/dns/nsecx.go
new file mode 100644
index 0000000..8f071a4
--- /dev/null
+++ b/vendor/github.com/miekg/dns/nsecx.go
@@ -0,0 +1,95 @@
+package dns
+
+import (
+ "crypto/sha1"
+ "encoding/hex"
+ "strings"
+)
+
+// HashName hashes a string (label) according to RFC 5155. It returns the hashed string in uppercase.
+func HashName(label string, ha uint8, iter uint16, salt string) string {
+ if ha != SHA1 {
+ return ""
+ }
+
+ wireSalt := make([]byte, hex.DecodedLen(len(salt)))
+ n, err := packStringHex(salt, wireSalt, 0)
+ if err != nil {
+ return ""
+ }
+ wireSalt = wireSalt[:n]
+
+ name := make([]byte, 255)
+ off, err := PackDomainName(strings.ToLower(label), name, 0, nil, false)
+ if err != nil {
+ return ""
+ }
+ name = name[:off]
+
+ s := sha1.New()
+ // k = 0
+ s.Write(name)
+ s.Write(wireSalt)
+ nsec3 := s.Sum(nil)
+
+ // k > 0
+ for k := uint16(0); k < iter; k++ {
+ s.Reset()
+ s.Write(nsec3)
+ s.Write(wireSalt)
+ nsec3 = s.Sum(nsec3[:0])
+ }
+
+ return toBase32(nsec3)
+}
+
+// Cover returns true if a name is covered by the NSEC3 record
+func (rr *NSEC3) Cover(name string) bool {
+ nameHash := HashName(name, rr.Hash, rr.Iterations, rr.Salt)
+ owner := strings.ToUpper(rr.Hdr.Name)
+ labelIndices := Split(owner)
+ if len(labelIndices) < 2 {
+ return false
+ }
+ ownerHash := owner[:labelIndices[1]-1]
+ ownerZone := owner[labelIndices[1]:]
+ if !IsSubDomain(ownerZone, strings.ToUpper(name)) { // name is outside owner zone
+ return false
+ }
+
+ nextHash := rr.NextDomain
+
+ // if empty interval found, try cover wildcard hashes so nameHash shouldn't match with ownerHash
+ if ownerHash == nextHash && nameHash != ownerHash { // empty interval
+ return true
+ }
+ if ownerHash > nextHash { // end of zone
+ if nameHash > ownerHash { // covered since there is nothing after ownerHash
+ return true
+ }
+ return nameHash < nextHash // if nameHash is before beginning of zone it is covered
+ }
+ if nameHash < ownerHash { // nameHash is before ownerHash, not covered
+ return false
+ }
+ return nameHash < nextHash // if nameHash is before nextHash is it covered (between ownerHash and nextHash)
+}
+
+// Match returns true if a name matches the NSEC3 record
+func (rr *NSEC3) Match(name string) bool {
+ nameHash := HashName(name, rr.Hash, rr.Iterations, rr.Salt)
+ owner := strings.ToUpper(rr.Hdr.Name)
+ labelIndices := Split(owner)
+ if len(labelIndices) < 2 {
+ return false
+ }
+ ownerHash := owner[:labelIndices[1]-1]
+ ownerZone := owner[labelIndices[1]:]
+ if !IsSubDomain(ownerZone, strings.ToUpper(name)) { // name is outside owner zone
+ return false
+ }
+ if ownerHash == nameHash {
+ return true
+ }
+ return false
+}
diff --git a/vendor/github.com/miekg/dns/privaterr.go b/vendor/github.com/miekg/dns/privaterr.go
new file mode 100644
index 0000000..e28f066
--- /dev/null
+++ b/vendor/github.com/miekg/dns/privaterr.go
@@ -0,0 +1,114 @@
+package dns
+
+import "strings"
+
+// PrivateRdata is an interface used for implementing "Private Use" RR types, see
+// RFC 6895. This allows one to experiment with new RR types, without requesting an
+// official type code. Also see dns.PrivateHandle and dns.PrivateHandleRemove.
+type PrivateRdata interface {
+ // String returns the text presentaton of the Rdata of the Private RR.
+ String() string
+ // Parse parses the Rdata of the private RR.
+ Parse([]string) error
+ // Pack is used when packing a private RR into a buffer.
+ Pack([]byte) (int, error)
+ // Unpack is used when unpacking a private RR from a buffer.
+ // TODO(miek): diff. signature than Pack, see edns0.go for instance.
+ Unpack([]byte) (int, error)
+ // Copy copies the Rdata into the PrivateRdata argument.
+ Copy(PrivateRdata) error
+ // Len returns the length in octets of the Rdata.
+ Len() int
+}
+
+// PrivateRR represents an RR that uses a PrivateRdata user-defined type.
+// It mocks normal RRs and implements dns.RR interface.
+type PrivateRR struct {
+ Hdr RR_Header
+ Data PrivateRdata
+
+ generator func() PrivateRdata // for copy
+}
+
+// Header return the RR header of r.
+func (r *PrivateRR) Header() *RR_Header { return &r.Hdr }
+
+func (r *PrivateRR) String() string { return r.Hdr.String() + r.Data.String() }
+
+// Private len and copy parts to satisfy RR interface.
+func (r *PrivateRR) len(off int, compression map[string]struct{}) int {
+ l := r.Hdr.len(off, compression)
+ l += r.Data.Len()
+ return l
+}
+
+func (r *PrivateRR) copy() RR {
+ // make new RR like this:
+ rr := &PrivateRR{r.Hdr, r.generator(), r.generator}
+
+ if err := r.Data.Copy(rr.Data); err != nil {
+ panic("dns: got value that could not be used to copy Private rdata: " + err.Error())
+ }
+
+ return rr
+}
+
+func (r *PrivateRR) pack(msg []byte, off int, compression compressionMap, compress bool) (int, error) {
+ n, err := r.Data.Pack(msg[off:])
+ if err != nil {
+ return len(msg), err
+ }
+ off += n
+ return off, nil
+}
+
+func (r *PrivateRR) unpack(msg []byte, off int) (int, error) {
+ off1, err := r.Data.Unpack(msg[off:])
+ off += off1
+ return off, err
+}
+
+func (r *PrivateRR) parse(c *zlexer, origin string) *ParseError {
+ var l lex
+ text := make([]string, 0, 2) // could be 0..N elements, median is probably 1
+Fetch:
+ for {
+ // TODO(miek): we could also be returning _QUOTE, this might or might not
+ // be an issue (basically parsing TXT becomes hard)
+ switch l, _ = c.Next(); l.value {
+ case zNewline, zEOF:
+ break Fetch
+ case zString:
+ text = append(text, l.token)
+ }
+ }
+
+ err := r.Data.Parse(text)
+ if err != nil {
+ return &ParseError{"", err.Error(), l}
+ }
+
+ return nil
+}
+
+func (r1 *PrivateRR) isDuplicate(r2 RR) bool { return false }
+
+// PrivateHandle registers a private resource record type. It requires
+// string and numeric representation of private RR type and generator function as argument.
+func PrivateHandle(rtypestr string, rtype uint16, generator func() PrivateRdata) {
+ rtypestr = strings.ToUpper(rtypestr)
+
+ TypeToRR[rtype] = func() RR { return &PrivateRR{RR_Header{}, generator(), generator} }
+ TypeToString[rtype] = rtypestr
+ StringToType[rtypestr] = rtype
+}
+
+// PrivateHandleRemove removes definitions required to support private RR type.
+func PrivateHandleRemove(rtype uint16) {
+ rtypestr, ok := TypeToString[rtype]
+ if ok {
+ delete(TypeToRR, rtype)
+ delete(TypeToString, rtype)
+ delete(StringToType, rtypestr)
+ }
+}
diff --git a/vendor/github.com/miekg/dns/reverse.go b/vendor/github.com/miekg/dns/reverse.go
new file mode 100644
index 0000000..28151af
--- /dev/null
+++ b/vendor/github.com/miekg/dns/reverse.go
@@ -0,0 +1,52 @@
+package dns
+
+// StringToType is the reverse of TypeToString, needed for string parsing.
+var StringToType = reverseInt16(TypeToString)
+
+// StringToClass is the reverse of ClassToString, needed for string parsing.
+var StringToClass = reverseInt16(ClassToString)
+
+// StringToOpcode is a map of opcodes to strings.
+var StringToOpcode = reverseInt(OpcodeToString)
+
+// StringToRcode is a map of rcodes to strings.
+var StringToRcode = reverseInt(RcodeToString)
+
+func init() {
+ // Preserve previous NOTIMP typo, see github.com/miekg/dns/issues/733.
+ StringToRcode["NOTIMPL"] = RcodeNotImplemented
+}
+
+// StringToAlgorithm is the reverse of AlgorithmToString.
+var StringToAlgorithm = reverseInt8(AlgorithmToString)
+
+// StringToHash is a map of names to hash IDs.
+var StringToHash = reverseInt8(HashToString)
+
+// StringToCertType is the reverseof CertTypeToString.
+var StringToCertType = reverseInt16(CertTypeToString)
+
+// Reverse a map
+func reverseInt8(m map[uint8]string) map[string]uint8 {
+ n := make(map[string]uint8, len(m))
+ for u, s := range m {
+ n[s] = u
+ }
+ return n
+}
+
+func reverseInt16(m map[uint16]string) map[string]uint16 {
+ n := make(map[string]uint16, len(m))
+ for u, s := range m {
+ n[s] = u
+ }
+ return n
+}
+
+func reverseInt(m map[int]string) map[string]int {
+ n := make(map[string]int, len(m))
+ for u, s := range m {
+ n[s] = u
+ }
+ return n
+}
diff --git a/vendor/github.com/miekg/dns/sanitize.go b/vendor/github.com/miekg/dns/sanitize.go
new file mode 100644
index 0000000..a638e86
--- /dev/null
+++ b/vendor/github.com/miekg/dns/sanitize.go
@@ -0,0 +1,86 @@
+package dns
+
+// Dedup removes identical RRs from rrs. It preserves the original ordering.
+// The lowest TTL of any duplicates is used in the remaining one. Dedup modifies
+// rrs.
+// m is used to store the RRs temporary. If it is nil a new map will be allocated.
+func Dedup(rrs []RR, m map[string]RR) []RR {
+
+ if m == nil {
+ m = make(map[string]RR)
+ }
+ // Save the keys, so we don't have to call normalizedString twice.
+ keys := make([]*string, 0, len(rrs))
+
+ for _, r := range rrs {
+ key := normalizedString(r)
+ keys = append(keys, &key)
+ if mr, ok := m[key]; ok {
+ // Shortest TTL wins.
+ rh, mrh := r.Header(), mr.Header()
+ if mrh.Ttl > rh.Ttl {
+ mrh.Ttl = rh.Ttl
+ }
+ continue
+ }
+
+ m[key] = r
+ }
+ // If the length of the result map equals the amount of RRs we got,
+ // it means they were all different. We can then just return the original rrset.
+ if len(m) == len(rrs) {
+ return rrs
+ }
+
+ j := 0
+ for i, r := range rrs {
+ // If keys[i] lives in the map, we should copy and remove it.
+ if _, ok := m[*keys[i]]; ok {
+ delete(m, *keys[i])
+ rrs[j] = r
+ j++
+ }
+
+ if len(m) == 0 {
+ break
+ }
+ }
+
+ return rrs[:j]
+}
+
+// normalizedString returns a normalized string from r. The TTL
+// is removed and the domain name is lowercased. We go from this:
+// DomainNameTTLCLASSTYPERDATA to:
+// lowercasenameCLASSTYPE...
+func normalizedString(r RR) string {
+ // A string Go DNS makes has: domainnameTTL...
+ b := []byte(r.String())
+
+ // find the first non-escaped tab, then another, so we capture where the TTL lives.
+ esc := false
+ ttlStart, ttlEnd := 0, 0
+ for i := 0; i < len(b) && ttlEnd == 0; i++ {
+ switch {
+ case b[i] == '\\':
+ esc = !esc
+ case b[i] == '\t' && !esc:
+ if ttlStart == 0 {
+ ttlStart = i
+ continue
+ }
+ if ttlEnd == 0 {
+ ttlEnd = i
+ }
+ case b[i] >= 'A' && b[i] <= 'Z' && !esc:
+ b[i] += 32
+ default:
+ esc = false
+ }
+ }
+
+ // remove TTL.
+ copy(b[ttlStart:], b[ttlEnd:])
+ cut := ttlEnd - ttlStart
+ return string(b[:len(b)-cut])
+}
diff --git a/vendor/github.com/miekg/dns/scan.go b/vendor/github.com/miekg/dns/scan.go
new file mode 100644
index 0000000..671018b
--- /dev/null
+++ b/vendor/github.com/miekg/dns/scan.go
@@ -0,0 +1,1408 @@
+package dns
+
+import (
+ "bufio"
+ "fmt"
+ "io"
+ "os"
+ "path/filepath"
+ "strconv"
+ "strings"
+)
+
+const maxTok = 2048 // Largest token we can return.
+
+// The maximum depth of $INCLUDE directives supported by the
+// ZoneParser API.
+const maxIncludeDepth = 7
+
+// Tokinize a RFC 1035 zone file. The tokenizer will normalize it:
+// * Add ownernames if they are left blank;
+// * Suppress sequences of spaces;
+// * Make each RR fit on one line (_NEWLINE is send as last)
+// * Handle comments: ;
+// * Handle braces - anywhere.
+const (
+ // Zonefile
+ zEOF = iota
+ zString
+ zBlank
+ zQuote
+ zNewline
+ zRrtpe
+ zOwner
+ zClass
+ zDirOrigin // $ORIGIN
+ zDirTTL // $TTL
+ zDirInclude // $INCLUDE
+ zDirGenerate // $GENERATE
+
+ // Privatekey file
+ zValue
+ zKey
+
+ zExpectOwnerDir // Ownername
+ zExpectOwnerBl // Whitespace after the ownername
+ zExpectAny // Expect rrtype, ttl or class
+ zExpectAnyNoClass // Expect rrtype or ttl
+ zExpectAnyNoClassBl // The whitespace after _EXPECT_ANY_NOCLASS
+ zExpectAnyNoTTL // Expect rrtype or class
+ zExpectAnyNoTTLBl // Whitespace after _EXPECT_ANY_NOTTL
+ zExpectRrtype // Expect rrtype
+ zExpectRrtypeBl // Whitespace BEFORE rrtype
+ zExpectRdata // The first element of the rdata
+ zExpectDirTTLBl // Space after directive $TTL
+ zExpectDirTTL // Directive $TTL
+ zExpectDirOriginBl // Space after directive $ORIGIN
+ zExpectDirOrigin // Directive $ORIGIN
+ zExpectDirIncludeBl // Space after directive $INCLUDE
+ zExpectDirInclude // Directive $INCLUDE
+ zExpectDirGenerate // Directive $GENERATE
+ zExpectDirGenerateBl // Space after directive $GENERATE
+)
+
+// ParseError is a parsing error. It contains the parse error and the location in the io.Reader
+// where the error occurred.
+type ParseError struct {
+ file string
+ err string
+ lex lex
+}
+
+func (e *ParseError) Error() (s string) {
+ if e.file != "" {
+ s = e.file + ": "
+ }
+ s += "dns: " + e.err + ": " + strconv.QuoteToASCII(e.lex.token) + " at line: " +
+ strconv.Itoa(e.lex.line) + ":" + strconv.Itoa(e.lex.column)
+ return
+}
+
+type lex struct {
+ token string // text of the token
+ err bool // when true, token text has lexer error
+ value uint8 // value: zString, _BLANK, etc.
+ torc uint16 // type or class as parsed in the lexer, we only need to look this up in the grammar
+ line int // line in the file
+ column int // column in the file
+}
+
+// Token holds the token that are returned when a zone file is parsed.
+type Token struct {
+ // The scanned resource record when error is not nil.
+ RR
+ // When an error occurred, this has the error specifics.
+ Error *ParseError
+ // A potential comment positioned after the RR and on the same line.
+ Comment string
+}
+
+// ttlState describes the state necessary to fill in an omitted RR TTL
+type ttlState struct {
+ ttl uint32 // ttl is the current default TTL
+ isByDirective bool // isByDirective indicates whether ttl was set by a $TTL directive
+}
+
+// NewRR reads the RR contained in the string s. Only the first RR is
+// returned. If s contains no records, NewRR will return nil with no
+// error.
+//
+// The class defaults to IN and TTL defaults to 3600. The full zone
+// file syntax like $TTL, $ORIGIN, etc. is supported.
+//
+// All fields of the returned RR are set, except RR.Header().Rdlength
+// which is set to 0.
+func NewRR(s string) (RR, error) {
+ if len(s) > 0 && s[len(s)-1] != '\n' { // We need a closing newline
+ return ReadRR(strings.NewReader(s+"\n"), "")
+ }
+ return ReadRR(strings.NewReader(s), "")
+}
+
+// ReadRR reads the RR contained in r.
+//
+// The string file is used in error reporting and to resolve relative
+// $INCLUDE directives.
+//
+// See NewRR for more documentation.
+func ReadRR(r io.Reader, file string) (RR, error) {
+ zp := NewZoneParser(r, ".", file)
+ zp.SetDefaultTTL(defaultTtl)
+ zp.SetIncludeAllowed(true)
+ rr, _ := zp.Next()
+ return rr, zp.Err()
+}
+
+// ParseZone reads a RFC 1035 style zonefile from r. It returns
+// Tokens on the returned channel, each consisting of either a
+// parsed RR and optional comment or a nil RR and an error. The
+// channel is closed by ParseZone when the end of r is reached.
+//
+// The string file is used in error reporting and to resolve relative
+// $INCLUDE directives. The string origin is used as the initial
+// origin, as if the file would start with an $ORIGIN directive.
+//
+// The directives $INCLUDE, $ORIGIN, $TTL and $GENERATE are all
+// supported. Note that $GENERATE's range support up to a maximum of
+// of 65535 steps.
+//
+// Basic usage pattern when reading from a string (z) containing the
+// zone data:
+//
+// for x := range dns.ParseZone(strings.NewReader(z), "", "") {
+// if x.Error != nil {
+// // log.Println(x.Error)
+// } else {
+// // Do something with x.RR
+// }
+// }
+//
+// Comments specified after an RR (and on the same line!) are
+// returned too:
+//
+// foo. IN A 10.0.0.1 ; this is a comment
+//
+// The text "; this is comment" is returned in Token.Comment.
+// Comments inside the RR are returned concatenated along with the
+// RR. Comments on a line by themselves are discarded.
+//
+// To prevent memory leaks it is important to always fully drain the
+// returned channel. If an error occurs, it will always be the last
+// Token sent on the channel.
+//
+// Deprecated: New users should prefer the ZoneParser API.
+func ParseZone(r io.Reader, origin, file string) chan *Token {
+ t := make(chan *Token, 10000)
+ go parseZone(r, origin, file, t)
+ return t
+}
+
+func parseZone(r io.Reader, origin, file string, t chan *Token) {
+ defer close(t)
+
+ zp := NewZoneParser(r, origin, file)
+ zp.SetIncludeAllowed(true)
+
+ for rr, ok := zp.Next(); ok; rr, ok = zp.Next() {
+ t <- &Token{RR: rr, Comment: zp.Comment()}
+ }
+
+ if err := zp.Err(); err != nil {
+ pe, ok := err.(*ParseError)
+ if !ok {
+ pe = &ParseError{file: file, err: err.Error()}
+ }
+
+ t <- &Token{Error: pe}
+ }
+}
+
+// ZoneParser is a parser for an RFC 1035 style zonefile.
+//
+// Each parsed RR in the zone is returned sequentially from Next. An
+// optional comment can be retrieved with Comment.
+//
+// The directives $INCLUDE, $ORIGIN, $TTL and $GENERATE are all
+// supported. Although $INCLUDE is disabled by default.
+// Note that $GENERATE's range support up to a maximum of 65535 steps.
+//
+// Basic usage pattern when reading from a string (z) containing the
+// zone data:
+//
+// zp := NewZoneParser(strings.NewReader(z), "", "")
+//
+// for rr, ok := zp.Next(); ok; rr, ok = zp.Next() {
+// // Do something with rr
+// }
+//
+// if err := zp.Err(); err != nil {
+// // log.Println(err)
+// }
+//
+// Comments specified after an RR (and on the same line!) are
+// returned too:
+//
+// foo. IN A 10.0.0.1 ; this is a comment
+//
+// The text "; this is comment" is returned from Comment. Comments inside
+// the RR are returned concatenated along with the RR. Comments on a line
+// by themselves are discarded.
+type ZoneParser struct {
+ c *zlexer
+
+ parseErr *ParseError
+
+ origin string
+ file string
+
+ defttl *ttlState
+
+ h RR_Header
+
+ // sub is used to parse $INCLUDE files and $GENERATE directives.
+ // Next, by calling subNext, forwards the resulting RRs from this
+ // sub parser to the calling code.
+ sub *ZoneParser
+ osFile *os.File
+
+ includeDepth uint8
+
+ includeAllowed bool
+ generateDisallowed bool
+}
+
+// NewZoneParser returns an RFC 1035 style zonefile parser that reads
+// from r.
+//
+// The string file is used in error reporting and to resolve relative
+// $INCLUDE directives. The string origin is used as the initial
+// origin, as if the file would start with an $ORIGIN directive.
+func NewZoneParser(r io.Reader, origin, file string) *ZoneParser {
+ var pe *ParseError
+ if origin != "" {
+ origin = Fqdn(origin)
+ if _, ok := IsDomainName(origin); !ok {
+ pe = &ParseError{file, "bad initial origin name", lex{}}
+ }
+ }
+
+ return &ZoneParser{
+ c: newZLexer(r),
+
+ parseErr: pe,
+
+ origin: origin,
+ file: file,
+ }
+}
+
+// SetDefaultTTL sets the parsers default TTL to ttl.
+func (zp *ZoneParser) SetDefaultTTL(ttl uint32) {
+ zp.defttl = &ttlState{ttl, false}
+}
+
+// SetIncludeAllowed controls whether $INCLUDE directives are
+// allowed. $INCLUDE directives are not supported by default.
+//
+// The $INCLUDE directive will open and read from a user controlled
+// file on the system. Even if the file is not a valid zonefile, the
+// contents of the file may be revealed in error messages, such as:
+//
+// /etc/passwd: dns: not a TTL: "root:x:0:0:root:/root:/bin/bash" at line: 1:31
+// /etc/shadow: dns: not a TTL: "root:$6$::0:99999:7:::" at line: 1:125
+func (zp *ZoneParser) SetIncludeAllowed(v bool) {
+ zp.includeAllowed = v
+}
+
+// Err returns the first non-EOF error that was encountered by the
+// ZoneParser.
+func (zp *ZoneParser) Err() error {
+ if zp.parseErr != nil {
+ return zp.parseErr
+ }
+
+ if zp.sub != nil {
+ if err := zp.sub.Err(); err != nil {
+ return err
+ }
+ }
+
+ return zp.c.Err()
+}
+
+func (zp *ZoneParser) setParseError(err string, l lex) (RR, bool) {
+ zp.parseErr = &ParseError{zp.file, err, l}
+ return nil, false
+}
+
+// Comment returns an optional text comment that occurred alongside
+// the RR.
+func (zp *ZoneParser) Comment() string {
+ if zp.parseErr != nil {
+ return ""
+ }
+
+ if zp.sub != nil {
+ return zp.sub.Comment()
+ }
+
+ return zp.c.Comment()
+}
+
+func (zp *ZoneParser) subNext() (RR, bool) {
+ if rr, ok := zp.sub.Next(); ok {
+ return rr, true
+ }
+
+ if zp.sub.osFile != nil {
+ zp.sub.osFile.Close()
+ zp.sub.osFile = nil
+ }
+
+ if zp.sub.Err() != nil {
+ // We have errors to surface.
+ return nil, false
+ }
+
+ zp.sub = nil
+ return zp.Next()
+}
+
+// Next advances the parser to the next RR in the zonefile and
+// returns the (RR, true). It will return (nil, false) when the
+// parsing stops, either by reaching the end of the input or an
+// error. After Next returns (nil, false), the Err method will return
+// any error that occurred during parsing.
+func (zp *ZoneParser) Next() (RR, bool) {
+ if zp.parseErr != nil {
+ return nil, false
+ }
+ if zp.sub != nil {
+ return zp.subNext()
+ }
+
+ // 6 possible beginnings of a line (_ is a space):
+ //
+ // 0. zRRTYPE -> all omitted until the rrtype
+ // 1. zOwner _ zRrtype -> class/ttl omitted
+ // 2. zOwner _ zString _ zRrtype -> class omitted
+ // 3. zOwner _ zString _ zClass _ zRrtype -> ttl/class
+ // 4. zOwner _ zClass _ zRrtype -> ttl omitted
+ // 5. zOwner _ zClass _ zString _ zRrtype -> class/ttl (reversed)
+ //
+ // After detecting these, we know the zRrtype so we can jump to functions
+ // handling the rdata for each of these types.
+
+ st := zExpectOwnerDir // initial state
+ h := &zp.h
+
+ for l, ok := zp.c.Next(); ok; l, ok = zp.c.Next() {
+ // zlexer spotted an error already
+ if l.err {
+ return zp.setParseError(l.token, l)
+ }
+
+ switch st {
+ case zExpectOwnerDir:
+ // We can also expect a directive, like $TTL or $ORIGIN
+ if zp.defttl != nil {
+ h.Ttl = zp.defttl.ttl
+ }
+
+ h.Class = ClassINET
+
+ switch l.value {
+ case zNewline:
+ st = zExpectOwnerDir
+ case zOwner:
+ name, ok := toAbsoluteName(l.token, zp.origin)
+ if !ok {
+ return zp.setParseError("bad owner name", l)
+ }
+
+ h.Name = name
+
+ st = zExpectOwnerBl
+ case zDirTTL:
+ st = zExpectDirTTLBl
+ case zDirOrigin:
+ st = zExpectDirOriginBl
+ case zDirInclude:
+ st = zExpectDirIncludeBl
+ case zDirGenerate:
+ st = zExpectDirGenerateBl
+ case zRrtpe:
+ h.Rrtype = l.torc
+
+ st = zExpectRdata
+ case zClass:
+ h.Class = l.torc
+
+ st = zExpectAnyNoClassBl
+ case zBlank:
+ // Discard, can happen when there is nothing on the
+ // line except the RR type
+ case zString:
+ ttl, ok := stringToTTL(l.token)
+ if !ok {
+ return zp.setParseError("not a TTL", l)
+ }
+
+ h.Ttl = ttl
+
+ if zp.defttl == nil || !zp.defttl.isByDirective {
+ zp.defttl = &ttlState{ttl, false}
+ }
+
+ st = zExpectAnyNoTTLBl
+ default:
+ return zp.setParseError("syntax error at beginning", l)
+ }
+ case zExpectDirIncludeBl:
+ if l.value != zBlank {
+ return zp.setParseError("no blank after $INCLUDE-directive", l)
+ }
+
+ st = zExpectDirInclude
+ case zExpectDirInclude:
+ if l.value != zString {
+ return zp.setParseError("expecting $INCLUDE value, not this...", l)
+ }
+
+ neworigin := zp.origin // There may be optionally a new origin set after the filename, if not use current one
+ switch l, _ := zp.c.Next(); l.value {
+ case zBlank:
+ l, _ := zp.c.Next()
+ if l.value == zString {
+ name, ok := toAbsoluteName(l.token, zp.origin)
+ if !ok {
+ return zp.setParseError("bad origin name", l)
+ }
+
+ neworigin = name
+ }
+ case zNewline, zEOF:
+ // Ok
+ default:
+ return zp.setParseError("garbage after $INCLUDE", l)
+ }
+
+ if !zp.includeAllowed {
+ return zp.setParseError("$INCLUDE directive not allowed", l)
+ }
+ if zp.includeDepth >= maxIncludeDepth {
+ return zp.setParseError("too deeply nested $INCLUDE", l)
+ }
+
+ // Start with the new file
+ includePath := l.token
+ if !filepath.IsAbs(includePath) {
+ includePath = filepath.Join(filepath.Dir(zp.file), includePath)
+ }
+
+ r1, e1 := os.Open(includePath)
+ if e1 != nil {
+ var as string
+ if !filepath.IsAbs(l.token) {
+ as = fmt.Sprintf(" as `%s'", includePath)
+ }
+
+ msg := fmt.Sprintf("failed to open `%s'%s: %v", l.token, as, e1)
+ return zp.setParseError(msg, l)
+ }
+
+ zp.sub = NewZoneParser(r1, neworigin, includePath)
+ zp.sub.defttl, zp.sub.includeDepth, zp.sub.osFile = zp.defttl, zp.includeDepth+1, r1
+ zp.sub.SetIncludeAllowed(true)
+ return zp.subNext()
+ case zExpectDirTTLBl:
+ if l.value != zBlank {
+ return zp.setParseError("no blank after $TTL-directive", l)
+ }
+
+ st = zExpectDirTTL
+ case zExpectDirTTL:
+ if l.value != zString {
+ return zp.setParseError("expecting $TTL value, not this...", l)
+ }
+
+ if err := slurpRemainder(zp.c); err != nil {
+ return zp.setParseError(err.err, err.lex)
+ }
+
+ ttl, ok := stringToTTL(l.token)
+ if !ok {
+ return zp.setParseError("expecting $TTL value, not this...", l)
+ }
+
+ zp.defttl = &ttlState{ttl, true}
+
+ st = zExpectOwnerDir
+ case zExpectDirOriginBl:
+ if l.value != zBlank {
+ return zp.setParseError("no blank after $ORIGIN-directive", l)
+ }
+
+ st = zExpectDirOrigin
+ case zExpectDirOrigin:
+ if l.value != zString {
+ return zp.setParseError("expecting $ORIGIN value, not this...", l)
+ }
+
+ if err := slurpRemainder(zp.c); err != nil {
+ return zp.setParseError(err.err, err.lex)
+ }
+
+ name, ok := toAbsoluteName(l.token, zp.origin)
+ if !ok {
+ return zp.setParseError("bad origin name", l)
+ }
+
+ zp.origin = name
+
+ st = zExpectOwnerDir
+ case zExpectDirGenerateBl:
+ if l.value != zBlank {
+ return zp.setParseError("no blank after $GENERATE-directive", l)
+ }
+
+ st = zExpectDirGenerate
+ case zExpectDirGenerate:
+ if zp.generateDisallowed {
+ return zp.setParseError("nested $GENERATE directive not allowed", l)
+ }
+ if l.value != zString {
+ return zp.setParseError("expecting $GENERATE value, not this...", l)
+ }
+
+ return zp.generate(l)
+ case zExpectOwnerBl:
+ if l.value != zBlank {
+ return zp.setParseError("no blank after owner", l)
+ }
+
+ st = zExpectAny
+ case zExpectAny:
+ switch l.value {
+ case zRrtpe:
+ if zp.defttl == nil {
+ return zp.setParseError("missing TTL with no previous value", l)
+ }
+
+ h.Rrtype = l.torc
+
+ st = zExpectRdata
+ case zClass:
+ h.Class = l.torc
+
+ st = zExpectAnyNoClassBl
+ case zString:
+ ttl, ok := stringToTTL(l.token)
+ if !ok {
+ return zp.setParseError("not a TTL", l)
+ }
+
+ h.Ttl = ttl
+
+ if zp.defttl == nil || !zp.defttl.isByDirective {
+ zp.defttl = &ttlState{ttl, false}
+ }
+
+ st = zExpectAnyNoTTLBl
+ default:
+ return zp.setParseError("expecting RR type, TTL or class, not this...", l)
+ }
+ case zExpectAnyNoClassBl:
+ if l.value != zBlank {
+ return zp.setParseError("no blank before class", l)
+ }
+
+ st = zExpectAnyNoClass
+ case zExpectAnyNoTTLBl:
+ if l.value != zBlank {
+ return zp.setParseError("no blank before TTL", l)
+ }
+
+ st = zExpectAnyNoTTL
+ case zExpectAnyNoTTL:
+ switch l.value {
+ case zClass:
+ h.Class = l.torc
+
+ st = zExpectRrtypeBl
+ case zRrtpe:
+ h.Rrtype = l.torc
+
+ st = zExpectRdata
+ default:
+ return zp.setParseError("expecting RR type or class, not this...", l)
+ }
+ case zExpectAnyNoClass:
+ switch l.value {
+ case zString:
+ ttl, ok := stringToTTL(l.token)
+ if !ok {
+ return zp.setParseError("not a TTL", l)
+ }
+
+ h.Ttl = ttl
+
+ if zp.defttl == nil || !zp.defttl.isByDirective {
+ zp.defttl = &ttlState{ttl, false}
+ }
+
+ st = zExpectRrtypeBl
+ case zRrtpe:
+ h.Rrtype = l.torc
+
+ st = zExpectRdata
+ default:
+ return zp.setParseError("expecting RR type or TTL, not this...", l)
+ }
+ case zExpectRrtypeBl:
+ if l.value != zBlank {
+ return zp.setParseError("no blank before RR type", l)
+ }
+
+ st = zExpectRrtype
+ case zExpectRrtype:
+ if l.value != zRrtpe {
+ return zp.setParseError("unknown RR type", l)
+ }
+
+ h.Rrtype = l.torc
+
+ st = zExpectRdata
+ case zExpectRdata:
+ var rr RR
+ if newFn, ok := TypeToRR[h.Rrtype]; ok && canParseAsRR(h.Rrtype) {
+ rr = newFn()
+ *rr.Header() = *h
+ } else {
+ rr = &RFC3597{Hdr: *h}
+ }
+
+ _, isPrivate := rr.(*PrivateRR)
+ if !isPrivate && zp.c.Peek().token == "" {
+ // This is a dynamic update rr.
+
+ // TODO(tmthrgd): Previously slurpRemainder was only called
+ // for certain RR types, which may have been important.
+ if err := slurpRemainder(zp.c); err != nil {
+ return zp.setParseError(err.err, err.lex)
+ }
+
+ return rr, true
+ } else if l.value == zNewline {
+ return zp.setParseError("unexpected newline", l)
+ }
+
+ if err := rr.parse(zp.c, zp.origin); err != nil {
+ // err is a concrete *ParseError without the file field set.
+ // The setParseError call below will construct a new
+ // *ParseError with file set to zp.file.
+
+ // If err.lex is nil than we have encounter an unknown RR type
+ // in that case we substitute our current lex token.
+ if err.lex == (lex{}) {
+ return zp.setParseError(err.err, l)
+ }
+
+ return zp.setParseError(err.err, err.lex)
+ }
+
+ return rr, true
+ }
+ }
+
+ // If we get here, we and the h.Rrtype is still zero, we haven't parsed anything, this
+ // is not an error, because an empty zone file is still a zone file.
+ return nil, false
+}
+
+// canParseAsRR returns true if the record type can be parsed as a
+// concrete RR. It blacklists certain record types that must be parsed
+// according to RFC 3597 because they lack a presentation format.
+func canParseAsRR(rrtype uint16) bool {
+ switch rrtype {
+ case TypeANY, TypeNULL, TypeOPT, TypeTSIG:
+ return false
+ default:
+ return true
+ }
+}
+
+type zlexer struct {
+ br io.ByteReader
+
+ readErr error
+
+ line int
+ column int
+
+ comBuf string
+ comment string
+
+ l lex
+ cachedL *lex
+
+ brace int
+ quote bool
+ space bool
+ commt bool
+ rrtype bool
+ owner bool
+
+ nextL bool
+
+ eol bool // end-of-line
+}
+
+func newZLexer(r io.Reader) *zlexer {
+ br, ok := r.(io.ByteReader)
+ if !ok {
+ br = bufio.NewReaderSize(r, 1024)
+ }
+
+ return &zlexer{
+ br: br,
+
+ line: 1,
+
+ owner: true,
+ }
+}
+
+func (zl *zlexer) Err() error {
+ if zl.readErr == io.EOF {
+ return nil
+ }
+
+ return zl.readErr
+}
+
+// readByte returns the next byte from the input
+func (zl *zlexer) readByte() (byte, bool) {
+ if zl.readErr != nil {
+ return 0, false
+ }
+
+ c, err := zl.br.ReadByte()
+ if err != nil {
+ zl.readErr = err
+ return 0, false
+ }
+
+ // delay the newline handling until the next token is delivered,
+ // fixes off-by-one errors when reporting a parse error.
+ if zl.eol {
+ zl.line++
+ zl.column = 0
+ zl.eol = false
+ }
+
+ if c == '\n' {
+ zl.eol = true
+ } else {
+ zl.column++
+ }
+
+ return c, true
+}
+
+func (zl *zlexer) Peek() lex {
+ if zl.nextL {
+ return zl.l
+ }
+
+ l, ok := zl.Next()
+ if !ok {
+ return l
+ }
+
+ if zl.nextL {
+ // Cache l. Next returns zl.cachedL then zl.l.
+ zl.cachedL = &l
+ } else {
+ // In this case l == zl.l, so we just tell Next to return zl.l.
+ zl.nextL = true
+ }
+
+ return l
+}
+
+func (zl *zlexer) Next() (lex, bool) {
+ l := &zl.l
+ switch {
+ case zl.cachedL != nil:
+ l, zl.cachedL = zl.cachedL, nil
+ return *l, true
+ case zl.nextL:
+ zl.nextL = false
+ return *l, true
+ case l.err:
+ // Parsing errors should be sticky.
+ return lex{value: zEOF}, false
+ }
+
+ var (
+ str [maxTok]byte // Hold string text
+ com [maxTok]byte // Hold comment text
+
+ stri int // Offset in str (0 means empty)
+ comi int // Offset in com (0 means empty)
+
+ escape bool
+ )
+
+ if zl.comBuf != "" {
+ comi = copy(com[:], zl.comBuf)
+ zl.comBuf = ""
+ }
+
+ zl.comment = ""
+
+ for x, ok := zl.readByte(); ok; x, ok = zl.readByte() {
+ l.line, l.column = zl.line, zl.column
+
+ if stri >= len(str) {
+ l.token = "token length insufficient for parsing"
+ l.err = true
+ return *l, true
+ }
+ if comi >= len(com) {
+ l.token = "comment length insufficient for parsing"
+ l.err = true
+ return *l, true
+ }
+
+ switch x {
+ case ' ', '\t':
+ if escape || zl.quote {
+ // Inside quotes or escaped this is legal.
+ str[stri] = x
+ stri++
+
+ escape = false
+ break
+ }
+
+ if zl.commt {
+ com[comi] = x
+ comi++
+ break
+ }
+
+ var retL lex
+ if stri == 0 {
+ // Space directly in the beginning, handled in the grammar
+ } else if zl.owner {
+ // If we have a string and its the first, make it an owner
+ l.value = zOwner
+ l.token = string(str[:stri])
+
+ // escape $... start with a \ not a $, so this will work
+ switch strings.ToUpper(l.token) {
+ case "$TTL":
+ l.value = zDirTTL
+ case "$ORIGIN":
+ l.value = zDirOrigin
+ case "$INCLUDE":
+ l.value = zDirInclude
+ case "$GENERATE":
+ l.value = zDirGenerate
+ }
+
+ retL = *l
+ } else {
+ l.value = zString
+ l.token = string(str[:stri])
+
+ if !zl.rrtype {
+ tokenUpper := strings.ToUpper(l.token)
+ if t, ok := StringToType[tokenUpper]; ok {
+ l.value = zRrtpe
+ l.torc = t
+
+ zl.rrtype = true
+ } else if strings.HasPrefix(tokenUpper, "TYPE") {
+ t, ok := typeToInt(l.token)
+ if !ok {
+ l.token = "unknown RR type"
+ l.err = true
+ return *l, true
+ }
+
+ l.value = zRrtpe
+ l.torc = t
+
+ zl.rrtype = true
+ }
+
+ if t, ok := StringToClass[tokenUpper]; ok {
+ l.value = zClass
+ l.torc = t
+ } else if strings.HasPrefix(tokenUpper, "CLASS") {
+ t, ok := classToInt(l.token)
+ if !ok {
+ l.token = "unknown class"
+ l.err = true
+ return *l, true
+ }
+
+ l.value = zClass
+ l.torc = t
+ }
+ }
+
+ retL = *l
+ }
+
+ zl.owner = false
+
+ if !zl.space {
+ zl.space = true
+
+ l.value = zBlank
+ l.token = " "
+
+ if retL == (lex{}) {
+ return *l, true
+ }
+
+ zl.nextL = true
+ }
+
+ if retL != (lex{}) {
+ return retL, true
+ }
+ case ';':
+ if escape || zl.quote {
+ // Inside quotes or escaped this is legal.
+ str[stri] = x
+ stri++
+
+ escape = false
+ break
+ }
+
+ zl.commt = true
+ zl.comBuf = ""
+
+ if comi > 1 {
+ // A newline was previously seen inside a comment that
+ // was inside braces and we delayed adding it until now.
+ com[comi] = ' ' // convert newline to space
+ comi++
+ if comi >= len(com) {
+ l.token = "comment length insufficient for parsing"
+ l.err = true
+ return *l, true
+ }
+ }
+
+ com[comi] = ';'
+ comi++
+
+ if stri > 0 {
+ zl.comBuf = string(com[:comi])
+
+ l.value = zString
+ l.token = string(str[:stri])
+ return *l, true
+ }
+ case '\r':
+ escape = false
+
+ if zl.quote {
+ str[stri] = x
+ stri++
+ }
+
+ // discard if outside of quotes
+ case '\n':
+ escape = false
+
+ // Escaped newline
+ if zl.quote {
+ str[stri] = x
+ stri++
+ break
+ }
+
+ if zl.commt {
+ // Reset a comment
+ zl.commt = false
+ zl.rrtype = false
+
+ // If not in a brace this ends the comment AND the RR
+ if zl.brace == 0 {
+ zl.owner = true
+
+ l.value = zNewline
+ l.token = "\n"
+ zl.comment = string(com[:comi])
+ return *l, true
+ }
+
+ zl.comBuf = string(com[:comi])
+ break
+ }
+
+ if zl.brace == 0 {
+ // If there is previous text, we should output it here
+ var retL lex
+ if stri != 0 {
+ l.value = zString
+ l.token = string(str[:stri])
+
+ if !zl.rrtype {
+ tokenUpper := strings.ToUpper(l.token)
+ if t, ok := StringToType[tokenUpper]; ok {
+ zl.rrtype = true
+
+ l.value = zRrtpe
+ l.torc = t
+ }
+ }
+
+ retL = *l
+ }
+
+ l.value = zNewline
+ l.token = "\n"
+
+ zl.comment = zl.comBuf
+ zl.comBuf = ""
+ zl.rrtype = false
+ zl.owner = true
+
+ if retL != (lex{}) {
+ zl.nextL = true
+ return retL, true
+ }
+
+ return *l, true
+ }
+ case '\\':
+ // comments do not get escaped chars, everything is copied
+ if zl.commt {
+ com[comi] = x
+ comi++
+ break
+ }
+
+ // something already escaped must be in string
+ if escape {
+ str[stri] = x
+ stri++
+
+ escape = false
+ break
+ }
+
+ // something escaped outside of string gets added to string
+ str[stri] = x
+ stri++
+
+ escape = true
+ case '"':
+ if zl.commt {
+ com[comi] = x
+ comi++
+ break
+ }
+
+ if escape {
+ str[stri] = x
+ stri++
+
+ escape = false
+ break
+ }
+
+ zl.space = false
+
+ // send previous gathered text and the quote
+ var retL lex
+ if stri != 0 {
+ l.value = zString
+ l.token = string(str[:stri])
+
+ retL = *l
+ }
+
+ // send quote itself as separate token
+ l.value = zQuote
+ l.token = "\""
+
+ zl.quote = !zl.quote
+
+ if retL != (lex{}) {
+ zl.nextL = true
+ return retL, true
+ }
+
+ return *l, true
+ case '(', ')':
+ if zl.commt {
+ com[comi] = x
+ comi++
+ break
+ }
+
+ if escape || zl.quote {
+ // Inside quotes or escaped this is legal.
+ str[stri] = x
+ stri++
+
+ escape = false
+ break
+ }
+
+ switch x {
+ case ')':
+ zl.brace--
+
+ if zl.brace < 0 {
+ l.token = "extra closing brace"
+ l.err = true
+ return *l, true
+ }
+ case '(':
+ zl.brace++
+ }
+ default:
+ escape = false
+
+ if zl.commt {
+ com[comi] = x
+ comi++
+ break
+ }
+
+ str[stri] = x
+ stri++
+
+ zl.space = false
+ }
+ }
+
+ if zl.readErr != nil && zl.readErr != io.EOF {
+ // Don't return any tokens after a read error occurs.
+ return lex{value: zEOF}, false
+ }
+
+ var retL lex
+ if stri > 0 {
+ // Send remainder of str
+ l.value = zString
+ l.token = string(str[:stri])
+ retL = *l
+
+ if comi <= 0 {
+ return retL, true
+ }
+ }
+
+ if comi > 0 {
+ // Send remainder of com
+ l.value = zNewline
+ l.token = "\n"
+ zl.comment = string(com[:comi])
+
+ if retL != (lex{}) {
+ zl.nextL = true
+ return retL, true
+ }
+
+ return *l, true
+ }
+
+ if zl.brace != 0 {
+ l.token = "unbalanced brace"
+ l.err = true
+ return *l, true
+ }
+
+ return lex{value: zEOF}, false
+}
+
+func (zl *zlexer) Comment() string {
+ if zl.l.err {
+ return ""
+ }
+
+ return zl.comment
+}
+
+// Extract the class number from CLASSxx
+func classToInt(token string) (uint16, bool) {
+ offset := 5
+ if len(token) < offset+1 {
+ return 0, false
+ }
+ class, err := strconv.ParseUint(token[offset:], 10, 16)
+ if err != nil {
+ return 0, false
+ }
+ return uint16(class), true
+}
+
+// Extract the rr number from TYPExxx
+func typeToInt(token string) (uint16, bool) {
+ offset := 4
+ if len(token) < offset+1 {
+ return 0, false
+ }
+ typ, err := strconv.ParseUint(token[offset:], 10, 16)
+ if err != nil {
+ return 0, false
+ }
+ return uint16(typ), true
+}
+
+// stringToTTL parses things like 2w, 2m, etc, and returns the time in seconds.
+func stringToTTL(token string) (uint32, bool) {
+ var s, i uint32
+ for _, c := range token {
+ switch c {
+ case 's', 'S':
+ s += i
+ i = 0
+ case 'm', 'M':
+ s += i * 60
+ i = 0
+ case 'h', 'H':
+ s += i * 60 * 60
+ i = 0
+ case 'd', 'D':
+ s += i * 60 * 60 * 24
+ i = 0
+ case 'w', 'W':
+ s += i * 60 * 60 * 24 * 7
+ i = 0
+ case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+ i *= 10
+ i += uint32(c) - '0'
+ default:
+ return 0, false
+ }
+ }
+ return s + i, true
+}
+
+// Parse LOC records' [.][mM] into a
+// mantissa exponent format. Token should contain the entire
+// string (i.e. no spaces allowed)
+func stringToCm(token string) (e, m uint8, ok bool) {
+ if token[len(token)-1] == 'M' || token[len(token)-1] == 'm' {
+ token = token[0 : len(token)-1]
+ }
+ s := strings.SplitN(token, ".", 2)
+ var meters, cmeters, val int
+ var err error
+ switch len(s) {
+ case 2:
+ if cmeters, err = strconv.Atoi(s[1]); err != nil {
+ return
+ }
+ fallthrough
+ case 1:
+ if meters, err = strconv.Atoi(s[0]); err != nil {
+ return
+ }
+ case 0:
+ // huh?
+ return 0, 0, false
+ }
+ ok = true
+ if meters > 0 {
+ e = 2
+ val = meters
+ } else {
+ e = 0
+ val = cmeters
+ }
+ for val > 10 {
+ e++
+ val /= 10
+ }
+ if e > 9 {
+ ok = false
+ }
+ m = uint8(val)
+ return
+}
+
+func toAbsoluteName(name, origin string) (absolute string, ok bool) {
+ // check for an explicit origin reference
+ if name == "@" {
+ // require a nonempty origin
+ if origin == "" {
+ return "", false
+ }
+ return origin, true
+ }
+
+ // require a valid domain name
+ _, ok = IsDomainName(name)
+ if !ok || name == "" {
+ return "", false
+ }
+
+ // check if name is already absolute
+ if IsFqdn(name) {
+ return name, true
+ }
+
+ // require a nonempty origin
+ if origin == "" {
+ return "", false
+ }
+ return appendOrigin(name, origin), true
+}
+
+func appendOrigin(name, origin string) string {
+ if origin == "." {
+ return name + origin
+ }
+ return name + "." + origin
+}
+
+// LOC record helper function
+func locCheckNorth(token string, latitude uint32) (uint32, bool) {
+ switch token {
+ case "n", "N":
+ return LOC_EQUATOR + latitude, true
+ case "s", "S":
+ return LOC_EQUATOR - latitude, true
+ }
+ return latitude, false
+}
+
+// LOC record helper function
+func locCheckEast(token string, longitude uint32) (uint32, bool) {
+ switch token {
+ case "e", "E":
+ return LOC_EQUATOR + longitude, true
+ case "w", "W":
+ return LOC_EQUATOR - longitude, true
+ }
+ return longitude, false
+}
+
+// "Eat" the rest of the "line"
+func slurpRemainder(c *zlexer) *ParseError {
+ l, _ := c.Next()
+ switch l.value {
+ case zBlank:
+ l, _ = c.Next()
+ if l.value != zNewline && l.value != zEOF {
+ return &ParseError{"", "garbage after rdata", l}
+ }
+ case zNewline:
+ case zEOF:
+ default:
+ return &ParseError{"", "garbage after rdata", l}
+ }
+ return nil
+}
+
+// Parse a 64 bit-like ipv6 address: "0014:4fff:ff20:ee64"
+// Used for NID and L64 record.
+func stringToNodeID(l lex) (uint64, *ParseError) {
+ if len(l.token) < 19 {
+ return 0, &ParseError{l.token, "bad NID/L64 NodeID/Locator64", l}
+ }
+ // There must be three colons at fixes postitions, if not its a parse error
+ if l.token[4] != ':' && l.token[9] != ':' && l.token[14] != ':' {
+ return 0, &ParseError{l.token, "bad NID/L64 NodeID/Locator64", l}
+ }
+ s := l.token[0:4] + l.token[5:9] + l.token[10:14] + l.token[15:19]
+ u, err := strconv.ParseUint(s, 16, 64)
+ if err != nil {
+ return 0, &ParseError{l.token, "bad NID/L64 NodeID/Locator64", l}
+ }
+ return u, nil
+}
diff --git a/vendor/github.com/miekg/dns/scan_rr.go b/vendor/github.com/miekg/dns/scan_rr.go
new file mode 100644
index 0000000..6c37b2e
--- /dev/null
+++ b/vendor/github.com/miekg/dns/scan_rr.go
@@ -0,0 +1,1764 @@
+package dns
+
+import (
+ "encoding/base64"
+ "net"
+ "strconv"
+ "strings"
+)
+
+// A remainder of the rdata with embedded spaces, return the parsed string (sans the spaces)
+// or an error
+func endingToString(c *zlexer, errstr string) (string, *ParseError) {
+ var s string
+ l, _ := c.Next() // zString
+ for l.value != zNewline && l.value != zEOF {
+ if l.err {
+ return s, &ParseError{"", errstr, l}
+ }
+ switch l.value {
+ case zString:
+ s += l.token
+ case zBlank: // Ok
+ default:
+ return "", &ParseError{"", errstr, l}
+ }
+ l, _ = c.Next()
+ }
+
+ return s, nil
+}
+
+// A remainder of the rdata with embedded spaces, split on unquoted whitespace
+// and return the parsed string slice or an error
+func endingToTxtSlice(c *zlexer, errstr string) ([]string, *ParseError) {
+ // Get the remaining data until we see a zNewline
+ l, _ := c.Next()
+ if l.err {
+ return nil, &ParseError{"", errstr, l}
+ }
+
+ // Build the slice
+ s := make([]string, 0)
+ quote := false
+ empty := false
+ for l.value != zNewline && l.value != zEOF {
+ if l.err {
+ return nil, &ParseError{"", errstr, l}
+ }
+ switch l.value {
+ case zString:
+ empty = false
+ if len(l.token) > 255 {
+ // split up tokens that are larger than 255 into 255-chunks
+ sx := []string{}
+ p, i := 0, 255
+ for {
+ if i <= len(l.token) {
+ sx = append(sx, l.token[p:i])
+ } else {
+ sx = append(sx, l.token[p:])
+ break
+
+ }
+ p, i = p+255, i+255
+ }
+ s = append(s, sx...)
+ break
+ }
+
+ s = append(s, l.token)
+ case zBlank:
+ if quote {
+ // zBlank can only be seen in between txt parts.
+ return nil, &ParseError{"", errstr, l}
+ }
+ case zQuote:
+ if empty && quote {
+ s = append(s, "")
+ }
+ quote = !quote
+ empty = true
+ default:
+ return nil, &ParseError{"", errstr, l}
+ }
+ l, _ = c.Next()
+ }
+
+ if quote {
+ return nil, &ParseError{"", errstr, l}
+ }
+
+ return s, nil
+}
+
+func (rr *A) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ rr.A = net.ParseIP(l.token)
+ // IPv4 addresses cannot include ":".
+ // We do this rather than use net.IP's To4() because
+ // To4() treats IPv4-mapped IPv6 addresses as being
+ // IPv4.
+ isIPv4 := !strings.Contains(l.token, ":")
+ if rr.A == nil || !isIPv4 || l.err {
+ return &ParseError{"", "bad A A", l}
+ }
+ return slurpRemainder(c)
+}
+
+func (rr *AAAA) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ rr.AAAA = net.ParseIP(l.token)
+ // IPv6 addresses must include ":", and IPv4
+ // addresses cannot include ":".
+ isIPv6 := strings.Contains(l.token, ":")
+ if rr.AAAA == nil || !isIPv6 || l.err {
+ return &ParseError{"", "bad AAAA AAAA", l}
+ }
+ return slurpRemainder(c)
+}
+
+func (rr *NS) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad NS Ns", l}
+ }
+ rr.Ns = name
+ return slurpRemainder(c)
+}
+
+func (rr *PTR) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad PTR Ptr", l}
+ }
+ rr.Ptr = name
+ return slurpRemainder(c)
+}
+
+func (rr *NSAPPTR) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad NSAP-PTR Ptr", l}
+ }
+ rr.Ptr = name
+ return slurpRemainder(c)
+}
+
+func (rr *RP) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ mbox, mboxOk := toAbsoluteName(l.token, o)
+ if l.err || !mboxOk {
+ return &ParseError{"", "bad RP Mbox", l}
+ }
+ rr.Mbox = mbox
+
+ c.Next() // zBlank
+ l, _ = c.Next()
+ rr.Txt = l.token
+
+ txt, txtOk := toAbsoluteName(l.token, o)
+ if l.err || !txtOk {
+ return &ParseError{"", "bad RP Txt", l}
+ }
+ rr.Txt = txt
+
+ return slurpRemainder(c)
+}
+
+func (rr *MR) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad MR Mr", l}
+ }
+ rr.Mr = name
+ return slurpRemainder(c)
+}
+
+func (rr *MB) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad MB Mb", l}
+ }
+ rr.Mb = name
+ return slurpRemainder(c)
+}
+
+func (rr *MG) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad MG Mg", l}
+ }
+ rr.Mg = name
+ return slurpRemainder(c)
+}
+
+func (rr *HINFO) parse(c *zlexer, o string) *ParseError {
+ chunks, e := endingToTxtSlice(c, "bad HINFO Fields")
+ if e != nil {
+ return e
+ }
+
+ if ln := len(chunks); ln == 0 {
+ return nil
+ } else if ln == 1 {
+ // Can we split it?
+ if out := strings.Fields(chunks[0]); len(out) > 1 {
+ chunks = out
+ } else {
+ chunks = append(chunks, "")
+ }
+ }
+
+ rr.Cpu = chunks[0]
+ rr.Os = strings.Join(chunks[1:], " ")
+
+ return nil
+}
+
+func (rr *MINFO) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ rmail, rmailOk := toAbsoluteName(l.token, o)
+ if l.err || !rmailOk {
+ return &ParseError{"", "bad MINFO Rmail", l}
+ }
+ rr.Rmail = rmail
+
+ c.Next() // zBlank
+ l, _ = c.Next()
+ rr.Email = l.token
+
+ email, emailOk := toAbsoluteName(l.token, o)
+ if l.err || !emailOk {
+ return &ParseError{"", "bad MINFO Email", l}
+ }
+ rr.Email = email
+
+ return slurpRemainder(c)
+}
+
+func (rr *MF) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad MF Mf", l}
+ }
+ rr.Mf = name
+ return slurpRemainder(c)
+}
+
+func (rr *MD) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad MD Md", l}
+ }
+ rr.Md = name
+ return slurpRemainder(c)
+}
+
+func (rr *MX) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad MX Pref", l}
+ }
+ rr.Preference = uint16(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ rr.Mx = l.token
+
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad MX Mx", l}
+ }
+ rr.Mx = name
+
+ return slurpRemainder(c)
+}
+
+func (rr *RT) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil {
+ return &ParseError{"", "bad RT Preference", l}
+ }
+ rr.Preference = uint16(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ rr.Host = l.token
+
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad RT Host", l}
+ }
+ rr.Host = name
+
+ return slurpRemainder(c)
+}
+
+func (rr *AFSDB) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad AFSDB Subtype", l}
+ }
+ rr.Subtype = uint16(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ rr.Hostname = l.token
+
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad AFSDB Hostname", l}
+ }
+ rr.Hostname = name
+ return slurpRemainder(c)
+}
+
+func (rr *X25) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ if l.err {
+ return &ParseError{"", "bad X25 PSDNAddress", l}
+ }
+ rr.PSDNAddress = l.token
+ return slurpRemainder(c)
+}
+
+func (rr *KX) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad KX Pref", l}
+ }
+ rr.Preference = uint16(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ rr.Exchanger = l.token
+
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad KX Exchanger", l}
+ }
+ rr.Exchanger = name
+ return slurpRemainder(c)
+}
+
+func (rr *CNAME) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad CNAME Target", l}
+ }
+ rr.Target = name
+ return slurpRemainder(c)
+}
+
+func (rr *DNAME) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad DNAME Target", l}
+ }
+ rr.Target = name
+ return slurpRemainder(c)
+}
+
+func (rr *SOA) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ ns, nsOk := toAbsoluteName(l.token, o)
+ if l.err || !nsOk {
+ return &ParseError{"", "bad SOA Ns", l}
+ }
+ rr.Ns = ns
+
+ c.Next() // zBlank
+ l, _ = c.Next()
+ rr.Mbox = l.token
+
+ mbox, mboxOk := toAbsoluteName(l.token, o)
+ if l.err || !mboxOk {
+ return &ParseError{"", "bad SOA Mbox", l}
+ }
+ rr.Mbox = mbox
+
+ c.Next() // zBlank
+
+ var (
+ v uint32
+ ok bool
+ )
+ for i := 0; i < 5; i++ {
+ l, _ = c.Next()
+ if l.err {
+ return &ParseError{"", "bad SOA zone parameter", l}
+ }
+ if j, e := strconv.ParseUint(l.token, 10, 32); e != nil {
+ if i == 0 {
+ // Serial must be a number
+ return &ParseError{"", "bad SOA zone parameter", l}
+ }
+ // We allow other fields to be unitful duration strings
+ if v, ok = stringToTTL(l.token); !ok {
+ return &ParseError{"", "bad SOA zone parameter", l}
+
+ }
+ } else {
+ v = uint32(j)
+ }
+ switch i {
+ case 0:
+ rr.Serial = v
+ c.Next() // zBlank
+ case 1:
+ rr.Refresh = v
+ c.Next() // zBlank
+ case 2:
+ rr.Retry = v
+ c.Next() // zBlank
+ case 3:
+ rr.Expire = v
+ c.Next() // zBlank
+ case 4:
+ rr.Minttl = v
+ }
+ }
+ return slurpRemainder(c)
+}
+
+func (rr *SRV) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad SRV Priority", l}
+ }
+ rr.Priority = uint16(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ i, e = strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad SRV Weight", l}
+ }
+ rr.Weight = uint16(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ i, e = strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad SRV Port", l}
+ }
+ rr.Port = uint16(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ rr.Target = l.token
+
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad SRV Target", l}
+ }
+ rr.Target = name
+ return slurpRemainder(c)
+}
+
+func (rr *NAPTR) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad NAPTR Order", l}
+ }
+ rr.Order = uint16(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ i, e = strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad NAPTR Preference", l}
+ }
+ rr.Preference = uint16(i)
+
+ // Flags
+ c.Next() // zBlank
+ l, _ = c.Next() // _QUOTE
+ if l.value != zQuote {
+ return &ParseError{"", "bad NAPTR Flags", l}
+ }
+ l, _ = c.Next() // Either String or Quote
+ if l.value == zString {
+ rr.Flags = l.token
+ l, _ = c.Next() // _QUOTE
+ if l.value != zQuote {
+ return &ParseError{"", "bad NAPTR Flags", l}
+ }
+ } else if l.value == zQuote {
+ rr.Flags = ""
+ } else {
+ return &ParseError{"", "bad NAPTR Flags", l}
+ }
+
+ // Service
+ c.Next() // zBlank
+ l, _ = c.Next() // _QUOTE
+ if l.value != zQuote {
+ return &ParseError{"", "bad NAPTR Service", l}
+ }
+ l, _ = c.Next() // Either String or Quote
+ if l.value == zString {
+ rr.Service = l.token
+ l, _ = c.Next() // _QUOTE
+ if l.value != zQuote {
+ return &ParseError{"", "bad NAPTR Service", l}
+ }
+ } else if l.value == zQuote {
+ rr.Service = ""
+ } else {
+ return &ParseError{"", "bad NAPTR Service", l}
+ }
+
+ // Regexp
+ c.Next() // zBlank
+ l, _ = c.Next() // _QUOTE
+ if l.value != zQuote {
+ return &ParseError{"", "bad NAPTR Regexp", l}
+ }
+ l, _ = c.Next() // Either String or Quote
+ if l.value == zString {
+ rr.Regexp = l.token
+ l, _ = c.Next() // _QUOTE
+ if l.value != zQuote {
+ return &ParseError{"", "bad NAPTR Regexp", l}
+ }
+ } else if l.value == zQuote {
+ rr.Regexp = ""
+ } else {
+ return &ParseError{"", "bad NAPTR Regexp", l}
+ }
+
+ // After quote no space??
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ rr.Replacement = l.token
+
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad NAPTR Replacement", l}
+ }
+ rr.Replacement = name
+ return slurpRemainder(c)
+}
+
+func (rr *TALINK) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ previousName, previousNameOk := toAbsoluteName(l.token, o)
+ if l.err || !previousNameOk {
+ return &ParseError{"", "bad TALINK PreviousName", l}
+ }
+ rr.PreviousName = previousName
+
+ c.Next() // zBlank
+ l, _ = c.Next()
+ rr.NextName = l.token
+
+ nextName, nextNameOk := toAbsoluteName(l.token, o)
+ if l.err || !nextNameOk {
+ return &ParseError{"", "bad TALINK NextName", l}
+ }
+ rr.NextName = nextName
+
+ return slurpRemainder(c)
+}
+
+func (rr *LOC) parse(c *zlexer, o string) *ParseError {
+ // Non zero defaults for LOC record, see RFC 1876, Section 3.
+ rr.HorizPre = 165 // 10000
+ rr.VertPre = 162 // 10
+ rr.Size = 18 // 1
+ ok := false
+
+ // North
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 32)
+ if e != nil || l.err {
+ return &ParseError{"", "bad LOC Latitude", l}
+ }
+ rr.Latitude = 1000 * 60 * 60 * uint32(i)
+
+ c.Next() // zBlank
+ // Either number, 'N' or 'S'
+ l, _ = c.Next()
+ if rr.Latitude, ok = locCheckNorth(l.token, rr.Latitude); ok {
+ goto East
+ }
+ i, e = strconv.ParseUint(l.token, 10, 32)
+ if e != nil || l.err {
+ return &ParseError{"", "bad LOC Latitude minutes", l}
+ }
+ rr.Latitude += 1000 * 60 * uint32(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next()
+ if i, e := strconv.ParseFloat(l.token, 32); e != nil || l.err {
+ return &ParseError{"", "bad LOC Latitude seconds", l}
+ } else {
+ rr.Latitude += uint32(1000 * i)
+ }
+ c.Next() // zBlank
+ // Either number, 'N' or 'S'
+ l, _ = c.Next()
+ if rr.Latitude, ok = locCheckNorth(l.token, rr.Latitude); ok {
+ goto East
+ }
+ // If still alive, flag an error
+ return &ParseError{"", "bad LOC Latitude North/South", l}
+
+East:
+ // East
+ c.Next() // zBlank
+ l, _ = c.Next()
+ if i, e := strconv.ParseUint(l.token, 10, 32); e != nil || l.err {
+ return &ParseError{"", "bad LOC Longitude", l}
+ } else {
+ rr.Longitude = 1000 * 60 * 60 * uint32(i)
+ }
+ c.Next() // zBlank
+ // Either number, 'E' or 'W'
+ l, _ = c.Next()
+ if rr.Longitude, ok = locCheckEast(l.token, rr.Longitude); ok {
+ goto Altitude
+ }
+ if i, e := strconv.ParseUint(l.token, 10, 32); e != nil || l.err {
+ return &ParseError{"", "bad LOC Longitude minutes", l}
+ } else {
+ rr.Longitude += 1000 * 60 * uint32(i)
+ }
+ c.Next() // zBlank
+ l, _ = c.Next()
+ if i, e := strconv.ParseFloat(l.token, 32); e != nil || l.err {
+ return &ParseError{"", "bad LOC Longitude seconds", l}
+ } else {
+ rr.Longitude += uint32(1000 * i)
+ }
+ c.Next() // zBlank
+ // Either number, 'E' or 'W'
+ l, _ = c.Next()
+ if rr.Longitude, ok = locCheckEast(l.token, rr.Longitude); ok {
+ goto Altitude
+ }
+ // If still alive, flag an error
+ return &ParseError{"", "bad LOC Longitude East/West", l}
+
+Altitude:
+ c.Next() // zBlank
+ l, _ = c.Next()
+ if len(l.token) == 0 || l.err {
+ return &ParseError{"", "bad LOC Altitude", l}
+ }
+ if l.token[len(l.token)-1] == 'M' || l.token[len(l.token)-1] == 'm' {
+ l.token = l.token[0 : len(l.token)-1]
+ }
+ if i, e := strconv.ParseFloat(l.token, 32); e != nil {
+ return &ParseError{"", "bad LOC Altitude", l}
+ } else {
+ rr.Altitude = uint32(i*100.0 + 10000000.0 + 0.5)
+ }
+
+ // And now optionally the other values
+ l, _ = c.Next()
+ count := 0
+ for l.value != zNewline && l.value != zEOF {
+ switch l.value {
+ case zString:
+ switch count {
+ case 0: // Size
+ e, m, ok := stringToCm(l.token)
+ if !ok {
+ return &ParseError{"", "bad LOC Size", l}
+ }
+ rr.Size = e&0x0f | m<<4&0xf0
+ case 1: // HorizPre
+ e, m, ok := stringToCm(l.token)
+ if !ok {
+ return &ParseError{"", "bad LOC HorizPre", l}
+ }
+ rr.HorizPre = e&0x0f | m<<4&0xf0
+ case 2: // VertPre
+ e, m, ok := stringToCm(l.token)
+ if !ok {
+ return &ParseError{"", "bad LOC VertPre", l}
+ }
+ rr.VertPre = e&0x0f | m<<4&0xf0
+ }
+ count++
+ case zBlank:
+ // Ok
+ default:
+ return &ParseError{"", "bad LOC Size, HorizPre or VertPre", l}
+ }
+ l, _ = c.Next()
+ }
+ return nil
+}
+
+func (rr *HIP) parse(c *zlexer, o string) *ParseError {
+ // HitLength is not represented
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad HIP PublicKeyAlgorithm", l}
+ }
+ rr.PublicKeyAlgorithm = uint8(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ if len(l.token) == 0 || l.err {
+ return &ParseError{"", "bad HIP Hit", l}
+ }
+ rr.Hit = l.token // This can not contain spaces, see RFC 5205 Section 6.
+ rr.HitLength = uint8(len(rr.Hit)) / 2
+
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ if len(l.token) == 0 || l.err {
+ return &ParseError{"", "bad HIP PublicKey", l}
+ }
+ rr.PublicKey = l.token // This cannot contain spaces
+ rr.PublicKeyLength = uint16(base64.StdEncoding.DecodedLen(len(rr.PublicKey)))
+
+ // RendezvousServers (if any)
+ l, _ = c.Next()
+ var xs []string
+ for l.value != zNewline && l.value != zEOF {
+ switch l.value {
+ case zString:
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad HIP RendezvousServers", l}
+ }
+ xs = append(xs, name)
+ case zBlank:
+ // Ok
+ default:
+ return &ParseError{"", "bad HIP RendezvousServers", l}
+ }
+ l, _ = c.Next()
+ }
+
+ rr.RendezvousServers = xs
+ return nil
+}
+
+func (rr *CERT) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ if v, ok := StringToCertType[l.token]; ok {
+ rr.Type = v
+ } else if i, e := strconv.ParseUint(l.token, 10, 16); e != nil {
+ return &ParseError{"", "bad CERT Type", l}
+ } else {
+ rr.Type = uint16(i)
+ }
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad CERT KeyTag", l}
+ }
+ rr.KeyTag = uint16(i)
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ if v, ok := StringToAlgorithm[l.token]; ok {
+ rr.Algorithm = v
+ } else if i, e := strconv.ParseUint(l.token, 10, 8); e != nil {
+ return &ParseError{"", "bad CERT Algorithm", l}
+ } else {
+ rr.Algorithm = uint8(i)
+ }
+ s, e1 := endingToString(c, "bad CERT Certificate")
+ if e1 != nil {
+ return e1
+ }
+ rr.Certificate = s
+ return nil
+}
+
+func (rr *OPENPGPKEY) parse(c *zlexer, o string) *ParseError {
+ s, e := endingToString(c, "bad OPENPGPKEY PublicKey")
+ if e != nil {
+ return e
+ }
+ rr.PublicKey = s
+ return nil
+}
+
+func (rr *CSYNC) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ j, e := strconv.ParseUint(l.token, 10, 32)
+ if e != nil {
+ // Serial must be a number
+ return &ParseError{"", "bad CSYNC serial", l}
+ }
+ rr.Serial = uint32(j)
+
+ c.Next() // zBlank
+
+ l, _ = c.Next()
+ j, e = strconv.ParseUint(l.token, 10, 16)
+ if e != nil {
+ // Serial must be a number
+ return &ParseError{"", "bad CSYNC flags", l}
+ }
+ rr.Flags = uint16(j)
+
+ rr.TypeBitMap = make([]uint16, 0)
+ var (
+ k uint16
+ ok bool
+ )
+ l, _ = c.Next()
+ for l.value != zNewline && l.value != zEOF {
+ switch l.value {
+ case zBlank:
+ // Ok
+ case zString:
+ tokenUpper := strings.ToUpper(l.token)
+ if k, ok = StringToType[tokenUpper]; !ok {
+ if k, ok = typeToInt(l.token); !ok {
+ return &ParseError{"", "bad CSYNC TypeBitMap", l}
+ }
+ }
+ rr.TypeBitMap = append(rr.TypeBitMap, k)
+ default:
+ return &ParseError{"", "bad CSYNC TypeBitMap", l}
+ }
+ l, _ = c.Next()
+ }
+ return nil
+}
+
+func (rr *SIG) parse(c *zlexer, o string) *ParseError {
+ return rr.RRSIG.parse(c, o)
+}
+
+func (rr *RRSIG) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ tokenUpper := strings.ToUpper(l.token)
+ if t, ok := StringToType[tokenUpper]; !ok {
+ if strings.HasPrefix(tokenUpper, "TYPE") {
+ t, ok = typeToInt(l.token)
+ if !ok {
+ return &ParseError{"", "bad RRSIG Typecovered", l}
+ }
+ rr.TypeCovered = t
+ } else {
+ return &ParseError{"", "bad RRSIG Typecovered", l}
+ }
+ } else {
+ rr.TypeCovered = t
+ }
+
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, err := strconv.ParseUint(l.token, 10, 8)
+ if err != nil || l.err {
+ return &ParseError{"", "bad RRSIG Algorithm", l}
+ }
+ rr.Algorithm = uint8(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, err = strconv.ParseUint(l.token, 10, 8)
+ if err != nil || l.err {
+ return &ParseError{"", "bad RRSIG Labels", l}
+ }
+ rr.Labels = uint8(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, err = strconv.ParseUint(l.token, 10, 32)
+ if err != nil || l.err {
+ return &ParseError{"", "bad RRSIG OrigTtl", l}
+ }
+ rr.OrigTtl = uint32(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next()
+ if i, err := StringToTime(l.token); err != nil {
+ // Try to see if all numeric and use it as epoch
+ if i, err := strconv.ParseInt(l.token, 10, 64); err == nil {
+ // TODO(miek): error out on > MAX_UINT32, same below
+ rr.Expiration = uint32(i)
+ } else {
+ return &ParseError{"", "bad RRSIG Expiration", l}
+ }
+ } else {
+ rr.Expiration = i
+ }
+
+ c.Next() // zBlank
+ l, _ = c.Next()
+ if i, err := StringToTime(l.token); err != nil {
+ if i, err := strconv.ParseInt(l.token, 10, 64); err == nil {
+ rr.Inception = uint32(i)
+ } else {
+ return &ParseError{"", "bad RRSIG Inception", l}
+ }
+ } else {
+ rr.Inception = i
+ }
+
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, err = strconv.ParseUint(l.token, 10, 16)
+ if err != nil || l.err {
+ return &ParseError{"", "bad RRSIG KeyTag", l}
+ }
+ rr.KeyTag = uint16(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next()
+ rr.SignerName = l.token
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad RRSIG SignerName", l}
+ }
+ rr.SignerName = name
+
+ s, e := endingToString(c, "bad RRSIG Signature")
+ if e != nil {
+ return e
+ }
+ rr.Signature = s
+
+ return nil
+}
+
+func (rr *NSEC) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad NSEC NextDomain", l}
+ }
+ rr.NextDomain = name
+
+ rr.TypeBitMap = make([]uint16, 0)
+ var (
+ k uint16
+ ok bool
+ )
+ l, _ = c.Next()
+ for l.value != zNewline && l.value != zEOF {
+ switch l.value {
+ case zBlank:
+ // Ok
+ case zString:
+ tokenUpper := strings.ToUpper(l.token)
+ if k, ok = StringToType[tokenUpper]; !ok {
+ if k, ok = typeToInt(l.token); !ok {
+ return &ParseError{"", "bad NSEC TypeBitMap", l}
+ }
+ }
+ rr.TypeBitMap = append(rr.TypeBitMap, k)
+ default:
+ return &ParseError{"", "bad NSEC TypeBitMap", l}
+ }
+ l, _ = c.Next()
+ }
+ return nil
+}
+
+func (rr *NSEC3) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad NSEC3 Hash", l}
+ }
+ rr.Hash = uint8(i)
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, e = strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad NSEC3 Flags", l}
+ }
+ rr.Flags = uint8(i)
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, e = strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad NSEC3 Iterations", l}
+ }
+ rr.Iterations = uint16(i)
+ c.Next()
+ l, _ = c.Next()
+ if len(l.token) == 0 || l.err {
+ return &ParseError{"", "bad NSEC3 Salt", l}
+ }
+ if l.token != "-" {
+ rr.SaltLength = uint8(len(l.token)) / 2
+ rr.Salt = l.token
+ }
+
+ c.Next()
+ l, _ = c.Next()
+ if len(l.token) == 0 || l.err {
+ return &ParseError{"", "bad NSEC3 NextDomain", l}
+ }
+ rr.HashLength = 20 // Fix for NSEC3 (sha1 160 bits)
+ rr.NextDomain = l.token
+
+ rr.TypeBitMap = make([]uint16, 0)
+ var (
+ k uint16
+ ok bool
+ )
+ l, _ = c.Next()
+ for l.value != zNewline && l.value != zEOF {
+ switch l.value {
+ case zBlank:
+ // Ok
+ case zString:
+ tokenUpper := strings.ToUpper(l.token)
+ if k, ok = StringToType[tokenUpper]; !ok {
+ if k, ok = typeToInt(l.token); !ok {
+ return &ParseError{"", "bad NSEC3 TypeBitMap", l}
+ }
+ }
+ rr.TypeBitMap = append(rr.TypeBitMap, k)
+ default:
+ return &ParseError{"", "bad NSEC3 TypeBitMap", l}
+ }
+ l, _ = c.Next()
+ }
+ return nil
+}
+
+func (rr *NSEC3PARAM) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad NSEC3PARAM Hash", l}
+ }
+ rr.Hash = uint8(i)
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, e = strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad NSEC3PARAM Flags", l}
+ }
+ rr.Flags = uint8(i)
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, e = strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad NSEC3PARAM Iterations", l}
+ }
+ rr.Iterations = uint16(i)
+ c.Next()
+ l, _ = c.Next()
+ if l.token != "-" {
+ rr.SaltLength = uint8(len(l.token))
+ rr.Salt = l.token
+ }
+ return slurpRemainder(c)
+}
+
+func (rr *EUI48) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ if len(l.token) != 17 || l.err {
+ return &ParseError{"", "bad EUI48 Address", l}
+ }
+ addr := make([]byte, 12)
+ dash := 0
+ for i := 0; i < 10; i += 2 {
+ addr[i] = l.token[i+dash]
+ addr[i+1] = l.token[i+1+dash]
+ dash++
+ if l.token[i+1+dash] != '-' {
+ return &ParseError{"", "bad EUI48 Address", l}
+ }
+ }
+ addr[10] = l.token[15]
+ addr[11] = l.token[16]
+
+ i, e := strconv.ParseUint(string(addr), 16, 48)
+ if e != nil {
+ return &ParseError{"", "bad EUI48 Address", l}
+ }
+ rr.Address = i
+ return slurpRemainder(c)
+}
+
+func (rr *EUI64) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ if len(l.token) != 23 || l.err {
+ return &ParseError{"", "bad EUI64 Address", l}
+ }
+ addr := make([]byte, 16)
+ dash := 0
+ for i := 0; i < 14; i += 2 {
+ addr[i] = l.token[i+dash]
+ addr[i+1] = l.token[i+1+dash]
+ dash++
+ if l.token[i+1+dash] != '-' {
+ return &ParseError{"", "bad EUI64 Address", l}
+ }
+ }
+ addr[14] = l.token[21]
+ addr[15] = l.token[22]
+
+ i, e := strconv.ParseUint(string(addr), 16, 64)
+ if e != nil {
+ return &ParseError{"", "bad EUI68 Address", l}
+ }
+ rr.Address = i
+ return slurpRemainder(c)
+}
+
+func (rr *SSHFP) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad SSHFP Algorithm", l}
+ }
+ rr.Algorithm = uint8(i)
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, e = strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad SSHFP Type", l}
+ }
+ rr.Type = uint8(i)
+ c.Next() // zBlank
+ s, e1 := endingToString(c, "bad SSHFP Fingerprint")
+ if e1 != nil {
+ return e1
+ }
+ rr.FingerPrint = s
+ return nil
+}
+
+func (rr *DNSKEY) parseDNSKEY(c *zlexer, o, typ string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad " + typ + " Flags", l}
+ }
+ rr.Flags = uint16(i)
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ i, e = strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad " + typ + " Protocol", l}
+ }
+ rr.Protocol = uint8(i)
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ i, e = strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad " + typ + " Algorithm", l}
+ }
+ rr.Algorithm = uint8(i)
+ s, e1 := endingToString(c, "bad "+typ+" PublicKey")
+ if e1 != nil {
+ return e1
+ }
+ rr.PublicKey = s
+ return nil
+}
+
+func (rr *DNSKEY) parse(c *zlexer, o string) *ParseError {
+ return rr.parseDNSKEY(c, o, "DNSKEY")
+}
+
+func (rr *KEY) parse(c *zlexer, o string) *ParseError {
+ return rr.parseDNSKEY(c, o, "KEY")
+}
+
+func (rr *CDNSKEY) parse(c *zlexer, o string) *ParseError {
+ return rr.parseDNSKEY(c, o, "CDNSKEY")
+}
+
+func (rr *RKEY) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad RKEY Flags", l}
+ }
+ rr.Flags = uint16(i)
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ i, e = strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad RKEY Protocol", l}
+ }
+ rr.Protocol = uint8(i)
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ i, e = strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad RKEY Algorithm", l}
+ }
+ rr.Algorithm = uint8(i)
+ s, e1 := endingToString(c, "bad RKEY PublicKey")
+ if e1 != nil {
+ return e1
+ }
+ rr.PublicKey = s
+ return nil
+}
+
+func (rr *EID) parse(c *zlexer, o string) *ParseError {
+ s, e := endingToString(c, "bad EID Endpoint")
+ if e != nil {
+ return e
+ }
+ rr.Endpoint = s
+ return nil
+}
+
+func (rr *NIMLOC) parse(c *zlexer, o string) *ParseError {
+ s, e := endingToString(c, "bad NIMLOC Locator")
+ if e != nil {
+ return e
+ }
+ rr.Locator = s
+ return nil
+}
+
+func (rr *GPOS) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ _, e := strconv.ParseFloat(l.token, 64)
+ if e != nil || l.err {
+ return &ParseError{"", "bad GPOS Longitude", l}
+ }
+ rr.Longitude = l.token
+ c.Next() // zBlank
+ l, _ = c.Next()
+ _, e = strconv.ParseFloat(l.token, 64)
+ if e != nil || l.err {
+ return &ParseError{"", "bad GPOS Latitude", l}
+ }
+ rr.Latitude = l.token
+ c.Next() // zBlank
+ l, _ = c.Next()
+ _, e = strconv.ParseFloat(l.token, 64)
+ if e != nil || l.err {
+ return &ParseError{"", "bad GPOS Altitude", l}
+ }
+ rr.Altitude = l.token
+ return slurpRemainder(c)
+}
+
+func (rr *DS) parseDS(c *zlexer, o, typ string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad " + typ + " KeyTag", l}
+ }
+ rr.KeyTag = uint16(i)
+ c.Next() // zBlank
+ l, _ = c.Next()
+ if i, e = strconv.ParseUint(l.token, 10, 8); e != nil {
+ tokenUpper := strings.ToUpper(l.token)
+ i, ok := StringToAlgorithm[tokenUpper]
+ if !ok || l.err {
+ return &ParseError{"", "bad " + typ + " Algorithm", l}
+ }
+ rr.Algorithm = i
+ } else {
+ rr.Algorithm = uint8(i)
+ }
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, e = strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad " + typ + " DigestType", l}
+ }
+ rr.DigestType = uint8(i)
+ s, e1 := endingToString(c, "bad "+typ+" Digest")
+ if e1 != nil {
+ return e1
+ }
+ rr.Digest = s
+ return nil
+}
+
+func (rr *DS) parse(c *zlexer, o string) *ParseError {
+ return rr.parseDS(c, o, "DS")
+}
+
+func (rr *DLV) parse(c *zlexer, o string) *ParseError {
+ return rr.parseDS(c, o, "DLV")
+}
+
+func (rr *CDS) parse(c *zlexer, o string) *ParseError {
+ return rr.parseDS(c, o, "CDS")
+}
+
+func (rr *TA) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad TA KeyTag", l}
+ }
+ rr.KeyTag = uint16(i)
+ c.Next() // zBlank
+ l, _ = c.Next()
+ if i, e := strconv.ParseUint(l.token, 10, 8); e != nil {
+ tokenUpper := strings.ToUpper(l.token)
+ i, ok := StringToAlgorithm[tokenUpper]
+ if !ok || l.err {
+ return &ParseError{"", "bad TA Algorithm", l}
+ }
+ rr.Algorithm = i
+ } else {
+ rr.Algorithm = uint8(i)
+ }
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, e = strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad TA DigestType", l}
+ }
+ rr.DigestType = uint8(i)
+ s, err := endingToString(c, "bad TA Digest")
+ if err != nil {
+ return err
+ }
+ rr.Digest = s
+ return nil
+}
+
+func (rr *TLSA) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad TLSA Usage", l}
+ }
+ rr.Usage = uint8(i)
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, e = strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad TLSA Selector", l}
+ }
+ rr.Selector = uint8(i)
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, e = strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad TLSA MatchingType", l}
+ }
+ rr.MatchingType = uint8(i)
+ // So this needs be e2 (i.e. different than e), because...??t
+ s, e2 := endingToString(c, "bad TLSA Certificate")
+ if e2 != nil {
+ return e2
+ }
+ rr.Certificate = s
+ return nil
+}
+
+func (rr *SMIMEA) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad SMIMEA Usage", l}
+ }
+ rr.Usage = uint8(i)
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, e = strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad SMIMEA Selector", l}
+ }
+ rr.Selector = uint8(i)
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, e = strconv.ParseUint(l.token, 10, 8)
+ if e != nil || l.err {
+ return &ParseError{"", "bad SMIMEA MatchingType", l}
+ }
+ rr.MatchingType = uint8(i)
+ // So this needs be e2 (i.e. different than e), because...??t
+ s, e2 := endingToString(c, "bad SMIMEA Certificate")
+ if e2 != nil {
+ return e2
+ }
+ rr.Certificate = s
+ return nil
+}
+
+func (rr *RFC3597) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ if l.token != "\\#" {
+ return &ParseError{"", "bad RFC3597 Rdata", l}
+ }
+
+ c.Next() // zBlank
+ l, _ = c.Next()
+ rdlength, e := strconv.Atoi(l.token)
+ if e != nil || l.err {
+ return &ParseError{"", "bad RFC3597 Rdata ", l}
+ }
+
+ s, e1 := endingToString(c, "bad RFC3597 Rdata")
+ if e1 != nil {
+ return e1
+ }
+ if rdlength*2 != len(s) {
+ return &ParseError{"", "bad RFC3597 Rdata", l}
+ }
+ rr.Rdata = s
+ return nil
+}
+
+func (rr *SPF) parse(c *zlexer, o string) *ParseError {
+ s, e := endingToTxtSlice(c, "bad SPF Txt")
+ if e != nil {
+ return e
+ }
+ rr.Txt = s
+ return nil
+}
+
+func (rr *AVC) parse(c *zlexer, o string) *ParseError {
+ s, e := endingToTxtSlice(c, "bad AVC Txt")
+ if e != nil {
+ return e
+ }
+ rr.Txt = s
+ return nil
+}
+
+func (rr *TXT) parse(c *zlexer, o string) *ParseError {
+ // no zBlank reading here, because all this rdata is TXT
+ s, e := endingToTxtSlice(c, "bad TXT Txt")
+ if e != nil {
+ return e
+ }
+ rr.Txt = s
+ return nil
+}
+
+// identical to setTXT
+func (rr *NINFO) parse(c *zlexer, o string) *ParseError {
+ s, e := endingToTxtSlice(c, "bad NINFO ZSData")
+ if e != nil {
+ return e
+ }
+ rr.ZSData = s
+ return nil
+}
+
+func (rr *URI) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad URI Priority", l}
+ }
+ rr.Priority = uint16(i)
+ c.Next() // zBlank
+ l, _ = c.Next()
+ i, e = strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad URI Weight", l}
+ }
+ rr.Weight = uint16(i)
+
+ c.Next() // zBlank
+ s, err := endingToTxtSlice(c, "bad URI Target")
+ if err != nil {
+ return err
+ }
+ if len(s) != 1 {
+ return &ParseError{"", "bad URI Target", l}
+ }
+ rr.Target = s[0]
+ return nil
+}
+
+func (rr *DHCID) parse(c *zlexer, o string) *ParseError {
+ // awesome record to parse!
+ s, e := endingToString(c, "bad DHCID Digest")
+ if e != nil {
+ return e
+ }
+ rr.Digest = s
+ return nil
+}
+
+func (rr *NID) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad NID Preference", l}
+ }
+ rr.Preference = uint16(i)
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ u, err := stringToNodeID(l)
+ if err != nil || l.err {
+ return err
+ }
+ rr.NodeID = u
+ return slurpRemainder(c)
+}
+
+func (rr *L32) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad L32 Preference", l}
+ }
+ rr.Preference = uint16(i)
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ rr.Locator32 = net.ParseIP(l.token)
+ if rr.Locator32 == nil || l.err {
+ return &ParseError{"", "bad L32 Locator", l}
+ }
+ return slurpRemainder(c)
+}
+
+func (rr *LP) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad LP Preference", l}
+ }
+ rr.Preference = uint16(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ rr.Fqdn = l.token
+ name, nameOk := toAbsoluteName(l.token, o)
+ if l.err || !nameOk {
+ return &ParseError{"", "bad LP Fqdn", l}
+ }
+ rr.Fqdn = name
+
+ return slurpRemainder(c)
+}
+
+func (rr *L64) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad L64 Preference", l}
+ }
+ rr.Preference = uint16(i)
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ u, err := stringToNodeID(l)
+ if err != nil || l.err {
+ return err
+ }
+ rr.Locator64 = u
+ return slurpRemainder(c)
+}
+
+func (rr *UID) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 32)
+ if e != nil || l.err {
+ return &ParseError{"", "bad UID Uid", l}
+ }
+ rr.Uid = uint32(i)
+ return slurpRemainder(c)
+}
+
+func (rr *GID) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 32)
+ if e != nil || l.err {
+ return &ParseError{"", "bad GID Gid", l}
+ }
+ rr.Gid = uint32(i)
+ return slurpRemainder(c)
+}
+
+func (rr *UINFO) parse(c *zlexer, o string) *ParseError {
+ s, e := endingToTxtSlice(c, "bad UINFO Uinfo")
+ if e != nil {
+ return e
+ }
+ if ln := len(s); ln == 0 {
+ return nil
+ }
+ rr.Uinfo = s[0] // silently discard anything after the first character-string
+ return nil
+}
+
+func (rr *PX) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, e := strconv.ParseUint(l.token, 10, 16)
+ if e != nil || l.err {
+ return &ParseError{"", "bad PX Preference", l}
+ }
+ rr.Preference = uint16(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ rr.Map822 = l.token
+ map822, map822Ok := toAbsoluteName(l.token, o)
+ if l.err || !map822Ok {
+ return &ParseError{"", "bad PX Map822", l}
+ }
+ rr.Map822 = map822
+
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ rr.Mapx400 = l.token
+ mapx400, mapx400Ok := toAbsoluteName(l.token, o)
+ if l.err || !mapx400Ok {
+ return &ParseError{"", "bad PX Mapx400", l}
+ }
+ rr.Mapx400 = mapx400
+
+ return slurpRemainder(c)
+}
+
+func (rr *CAA) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+ i, err := strconv.ParseUint(l.token, 10, 8)
+ if err != nil || l.err {
+ return &ParseError{"", "bad CAA Flag", l}
+ }
+ rr.Flag = uint8(i)
+
+ c.Next() // zBlank
+ l, _ = c.Next() // zString
+ if l.value != zString {
+ return &ParseError{"", "bad CAA Tag", l}
+ }
+ rr.Tag = l.token
+
+ c.Next() // zBlank
+ s, e := endingToTxtSlice(c, "bad CAA Value")
+ if e != nil {
+ return e
+ }
+ if len(s) != 1 {
+ return &ParseError{"", "bad CAA Value", l}
+ }
+ rr.Value = s[0]
+ return nil
+}
+
+func (rr *TKEY) parse(c *zlexer, o string) *ParseError {
+ l, _ := c.Next()
+
+ // Algorithm
+ if l.value != zString {
+ return &ParseError{"", "bad TKEY algorithm", l}
+ }
+ rr.Algorithm = l.token
+ c.Next() // zBlank
+
+ // Get the key length and key values
+ l, _ = c.Next()
+ i, err := strconv.ParseUint(l.token, 10, 8)
+ if err != nil || l.err {
+ return &ParseError{"", "bad TKEY key length", l}
+ }
+ rr.KeySize = uint16(i)
+ c.Next() // zBlank
+ l, _ = c.Next()
+ if l.value != zString {
+ return &ParseError{"", "bad TKEY key", l}
+ }
+ rr.Key = l.token
+ c.Next() // zBlank
+
+ // Get the otherdata length and string data
+ l, _ = c.Next()
+ i, err = strconv.ParseUint(l.token, 10, 8)
+ if err != nil || l.err {
+ return &ParseError{"", "bad TKEY otherdata length", l}
+ }
+ rr.OtherLen = uint16(i)
+ c.Next() // zBlank
+ l, _ = c.Next()
+ if l.value != zString {
+ return &ParseError{"", "bad TKEY otherday", l}
+ }
+ rr.OtherData = l.token
+
+ return nil
+}
+
+func (rr *APL) parse(c *zlexer, o string) *ParseError {
+ var prefixes []APLPrefix
+
+ for {
+ l, _ := c.Next()
+ if l.value == zNewline || l.value == zEOF {
+ break
+ }
+ if l.value == zBlank && prefixes != nil {
+ continue
+ }
+ if l.value != zString {
+ return &ParseError{"", "unexpected APL field", l}
+ }
+
+ // Expected format: [!]afi:address/prefix
+
+ colon := strings.IndexByte(l.token, ':')
+ if colon == -1 {
+ return &ParseError{"", "missing colon in APL field", l}
+ }
+
+ family, cidr := l.token[:colon], l.token[colon+1:]
+
+ var negation bool
+ if family != "" && family[0] == '!' {
+ negation = true
+ family = family[1:]
+ }
+
+ afi, err := strconv.ParseUint(family, 10, 16)
+ if err != nil {
+ return &ParseError{"", "failed to parse APL family: " + err.Error(), l}
+ }
+ var addrLen int
+ switch afi {
+ case 1:
+ addrLen = net.IPv4len
+ case 2:
+ addrLen = net.IPv6len
+ default:
+ return &ParseError{"", "unrecognized APL family", l}
+ }
+
+ ip, subnet, err := net.ParseCIDR(cidr)
+ if err != nil {
+ return &ParseError{"", "failed to parse APL address: " + err.Error(), l}
+ }
+ if !ip.Equal(subnet.IP) {
+ return &ParseError{"", "extra bits in APL address", l}
+ }
+
+ if len(subnet.IP) != addrLen {
+ return &ParseError{"", "address mismatch with the APL family", l}
+ }
+
+ prefixes = append(prefixes, APLPrefix{
+ Negation: negation,
+ Network: *subnet,
+ })
+ }
+
+ rr.Prefixes = prefixes
+ return nil
+}
diff --git a/vendor/github.com/miekg/dns/serve_mux.go b/vendor/github.com/miekg/dns/serve_mux.go
new file mode 100644
index 0000000..69deb33
--- /dev/null
+++ b/vendor/github.com/miekg/dns/serve_mux.go
@@ -0,0 +1,123 @@
+package dns
+
+import (
+ "strings"
+ "sync"
+)
+
+// ServeMux is an DNS request multiplexer. It matches the zone name of
+// each incoming request against a list of registered patterns add calls
+// the handler for the pattern that most closely matches the zone name.
+//
+// ServeMux is DNSSEC aware, meaning that queries for the DS record are
+// redirected to the parent zone (if that is also registered), otherwise
+// the child gets the query.
+//
+// ServeMux is also safe for concurrent access from multiple goroutines.
+//
+// The zero ServeMux is empty and ready for use.
+type ServeMux struct {
+ z map[string]Handler
+ m sync.RWMutex
+}
+
+// NewServeMux allocates and returns a new ServeMux.
+func NewServeMux() *ServeMux {
+ return new(ServeMux)
+}
+
+// DefaultServeMux is the default ServeMux used by Serve.
+var DefaultServeMux = NewServeMux()
+
+func (mux *ServeMux) match(q string, t uint16) Handler {
+ mux.m.RLock()
+ defer mux.m.RUnlock()
+ if mux.z == nil {
+ return nil
+ }
+
+ q = strings.ToLower(q)
+
+ var handler Handler
+ for off, end := 0, false; !end; off, end = NextLabel(q, off) {
+ if h, ok := mux.z[q[off:]]; ok {
+ if t != TypeDS {
+ return h
+ }
+ // Continue for DS to see if we have a parent too, if so delegate to the parent
+ handler = h
+ }
+ }
+
+ // Wildcard match, if we have found nothing try the root zone as a last resort.
+ if h, ok := mux.z["."]; ok {
+ return h
+ }
+
+ return handler
+}
+
+// Handle adds a handler to the ServeMux for pattern.
+func (mux *ServeMux) Handle(pattern string, handler Handler) {
+ if pattern == "" {
+ panic("dns: invalid pattern " + pattern)
+ }
+ mux.m.Lock()
+ if mux.z == nil {
+ mux.z = make(map[string]Handler)
+ }
+ mux.z[Fqdn(pattern)] = handler
+ mux.m.Unlock()
+}
+
+// HandleFunc adds a handler function to the ServeMux for pattern.
+func (mux *ServeMux) HandleFunc(pattern string, handler func(ResponseWriter, *Msg)) {
+ mux.Handle(pattern, HandlerFunc(handler))
+}
+
+// HandleRemove deregisters the handler specific for pattern from the ServeMux.
+func (mux *ServeMux) HandleRemove(pattern string) {
+ if pattern == "" {
+ panic("dns: invalid pattern " + pattern)
+ }
+ mux.m.Lock()
+ delete(mux.z, Fqdn(pattern))
+ mux.m.Unlock()
+}
+
+// ServeDNS dispatches the request to the handler whose pattern most
+// closely matches the request message.
+//
+// ServeDNS is DNSSEC aware, meaning that queries for the DS record
+// are redirected to the parent zone (if that is also registered),
+// otherwise the child gets the query.
+//
+// If no handler is found, or there is no question, a standard SERVFAIL
+// message is returned
+func (mux *ServeMux) ServeDNS(w ResponseWriter, req *Msg) {
+ var h Handler
+ if len(req.Question) >= 1 { // allow more than one question
+ h = mux.match(req.Question[0].Name, req.Question[0].Qtype)
+ }
+
+ if h != nil {
+ h.ServeDNS(w, req)
+ } else {
+ HandleFailed(w, req)
+ }
+}
+
+// Handle registers the handler with the given pattern
+// in the DefaultServeMux. The documentation for
+// ServeMux explains how patterns are matched.
+func Handle(pattern string, handler Handler) { DefaultServeMux.Handle(pattern, handler) }
+
+// HandleRemove deregisters the handle with the given pattern
+// in the DefaultServeMux.
+func HandleRemove(pattern string) { DefaultServeMux.HandleRemove(pattern) }
+
+// HandleFunc registers the handler function with the given pattern
+// in the DefaultServeMux.
+func HandleFunc(pattern string, handler func(ResponseWriter, *Msg)) {
+ DefaultServeMux.HandleFunc(pattern, handler)
+}
diff --git a/vendor/github.com/miekg/dns/server.go b/vendor/github.com/miekg/dns/server.go
new file mode 100644
index 0000000..3cf1a02
--- /dev/null
+++ b/vendor/github.com/miekg/dns/server.go
@@ -0,0 +1,764 @@
+// DNS server implementation.
+
+package dns
+
+import (
+ "context"
+ "crypto/tls"
+ "encoding/binary"
+ "errors"
+ "io"
+ "net"
+ "strings"
+ "sync"
+ "time"
+)
+
+// Default maximum number of TCP queries before we close the socket.
+const maxTCPQueries = 128
+
+// aLongTimeAgo is a non-zero time, far in the past, used for
+// immediate cancelation of network operations.
+var aLongTimeAgo = time.Unix(1, 0)
+
+// Handler is implemented by any value that implements ServeDNS.
+type Handler interface {
+ ServeDNS(w ResponseWriter, r *Msg)
+}
+
+// The HandlerFunc type is an adapter to allow the use of
+// ordinary functions as DNS handlers. If f is a function
+// with the appropriate signature, HandlerFunc(f) is a
+// Handler object that calls f.
+type HandlerFunc func(ResponseWriter, *Msg)
+
+// ServeDNS calls f(w, r).
+func (f HandlerFunc) ServeDNS(w ResponseWriter, r *Msg) {
+ f(w, r)
+}
+
+// A ResponseWriter interface is used by an DNS handler to
+// construct an DNS response.
+type ResponseWriter interface {
+ // LocalAddr returns the net.Addr of the server
+ LocalAddr() net.Addr
+ // RemoteAddr returns the net.Addr of the client that sent the current request.
+ RemoteAddr() net.Addr
+ // WriteMsg writes a reply back to the client.
+ WriteMsg(*Msg) error
+ // Write writes a raw buffer back to the client.
+ Write([]byte) (int, error)
+ // Close closes the connection.
+ Close() error
+ // TsigStatus returns the status of the Tsig.
+ TsigStatus() error
+ // TsigTimersOnly sets the tsig timers only boolean.
+ TsigTimersOnly(bool)
+ // Hijack lets the caller take over the connection.
+ // After a call to Hijack(), the DNS package will not do anything with the connection.
+ Hijack()
+}
+
+// A ConnectionStater interface is used by a DNS Handler to access TLS connection state
+// when available.
+type ConnectionStater interface {
+ ConnectionState() *tls.ConnectionState
+}
+
+type response struct {
+ closed bool // connection has been closed
+ hijacked bool // connection has been hijacked by handler
+ tsigTimersOnly bool
+ tsigStatus error
+ tsigRequestMAC string
+ tsigSecret map[string]string // the tsig secrets
+ udp *net.UDPConn // i/o connection if UDP was used
+ tcp net.Conn // i/o connection if TCP was used
+ udpSession *SessionUDP // oob data to get egress interface right
+ writer Writer // writer to output the raw DNS bits
+}
+
+// HandleFailed returns a HandlerFunc that returns SERVFAIL for every request it gets.
+func HandleFailed(w ResponseWriter, r *Msg) {
+ m := new(Msg)
+ m.SetRcode(r, RcodeServerFailure)
+ // does not matter if this write fails
+ w.WriteMsg(m)
+}
+
+// ListenAndServe Starts a server on address and network specified Invoke handler
+// for incoming queries.
+func ListenAndServe(addr string, network string, handler Handler) error {
+ server := &Server{Addr: addr, Net: network, Handler: handler}
+ return server.ListenAndServe()
+}
+
+// ListenAndServeTLS acts like http.ListenAndServeTLS, more information in
+// http://golang.org/pkg/net/http/#ListenAndServeTLS
+func ListenAndServeTLS(addr, certFile, keyFile string, handler Handler) error {
+ cert, err := tls.LoadX509KeyPair(certFile, keyFile)
+ if err != nil {
+ return err
+ }
+
+ config := tls.Config{
+ Certificates: []tls.Certificate{cert},
+ }
+
+ server := &Server{
+ Addr: addr,
+ Net: "tcp-tls",
+ TLSConfig: &config,
+ Handler: handler,
+ }
+
+ return server.ListenAndServe()
+}
+
+// ActivateAndServe activates a server with a listener from systemd,
+// l and p should not both be non-nil.
+// If both l and p are not nil only p will be used.
+// Invoke handler for incoming queries.
+func ActivateAndServe(l net.Listener, p net.PacketConn, handler Handler) error {
+ server := &Server{Listener: l, PacketConn: p, Handler: handler}
+ return server.ActivateAndServe()
+}
+
+// Writer writes raw DNS messages; each call to Write should send an entire message.
+type Writer interface {
+ io.Writer
+}
+
+// Reader reads raw DNS messages; each call to ReadTCP or ReadUDP should return an entire message.
+type Reader interface {
+ // ReadTCP reads a raw message from a TCP connection. Implementations may alter
+ // connection properties, for example the read-deadline.
+ ReadTCP(conn net.Conn, timeout time.Duration) ([]byte, error)
+ // ReadUDP reads a raw message from a UDP connection. Implementations may alter
+ // connection properties, for example the read-deadline.
+ ReadUDP(conn *net.UDPConn, timeout time.Duration) ([]byte, *SessionUDP, error)
+}
+
+// defaultReader is an adapter for the Server struct that implements the Reader interface
+// using the readTCP and readUDP func of the embedded Server.
+type defaultReader struct {
+ *Server
+}
+
+func (dr defaultReader) ReadTCP(conn net.Conn, timeout time.Duration) ([]byte, error) {
+ return dr.readTCP(conn, timeout)
+}
+
+func (dr defaultReader) ReadUDP(conn *net.UDPConn, timeout time.Duration) ([]byte, *SessionUDP, error) {
+ return dr.readUDP(conn, timeout)
+}
+
+// DecorateReader is a decorator hook for extending or supplanting the functionality of a Reader.
+// Implementations should never return a nil Reader.
+type DecorateReader func(Reader) Reader
+
+// DecorateWriter is a decorator hook for extending or supplanting the functionality of a Writer.
+// Implementations should never return a nil Writer.
+type DecorateWriter func(Writer) Writer
+
+// A Server defines parameters for running an DNS server.
+type Server struct {
+ // Address to listen on, ":dns" if empty.
+ Addr string
+ // if "tcp" or "tcp-tls" (DNS over TLS) it will invoke a TCP listener, otherwise an UDP one
+ Net string
+ // TCP Listener to use, this is to aid in systemd's socket activation.
+ Listener net.Listener
+ // TLS connection configuration
+ TLSConfig *tls.Config
+ // UDP "Listener" to use, this is to aid in systemd's socket activation.
+ PacketConn net.PacketConn
+ // Handler to invoke, dns.DefaultServeMux if nil.
+ Handler Handler
+ // Default buffer size to use to read incoming UDP messages. If not set
+ // it defaults to MinMsgSize (512 B).
+ UDPSize int
+ // The net.Conn.SetReadTimeout value for new connections, defaults to 2 * time.Second.
+ ReadTimeout time.Duration
+ // The net.Conn.SetWriteTimeout value for new connections, defaults to 2 * time.Second.
+ WriteTimeout time.Duration
+ // TCP idle timeout for multiple queries, if nil, defaults to 8 * time.Second (RFC 5966).
+ IdleTimeout func() time.Duration
+ // Secret(s) for Tsig map[]. The zonename must be in canonical form (lowercase, fqdn, see RFC 4034 Section 6.2).
+ TsigSecret map[string]string
+ // If NotifyStartedFunc is set it is called once the server has started listening.
+ NotifyStartedFunc func()
+ // DecorateReader is optional, allows customization of the process that reads raw DNS messages.
+ DecorateReader DecorateReader
+ // DecorateWriter is optional, allows customization of the process that writes raw DNS messages.
+ DecorateWriter DecorateWriter
+ // Maximum number of TCP queries before we close the socket. Default is maxTCPQueries (unlimited if -1).
+ MaxTCPQueries int
+ // Whether to set the SO_REUSEPORT socket option, allowing multiple listeners to be bound to a single address.
+ // It is only supported on go1.11+ and when using ListenAndServe.
+ ReusePort bool
+ // AcceptMsgFunc will check the incoming message and will reject it early in the process.
+ // By default DefaultMsgAcceptFunc will be used.
+ MsgAcceptFunc MsgAcceptFunc
+
+ // Shutdown handling
+ lock sync.RWMutex
+ started bool
+ shutdown chan struct{}
+ conns map[net.Conn]struct{}
+
+ // A pool for UDP message buffers.
+ udpPool sync.Pool
+}
+
+func (srv *Server) isStarted() bool {
+ srv.lock.RLock()
+ started := srv.started
+ srv.lock.RUnlock()
+ return started
+}
+
+func makeUDPBuffer(size int) func() interface{} {
+ return func() interface{} {
+ return make([]byte, size)
+ }
+}
+
+func (srv *Server) init() {
+ srv.shutdown = make(chan struct{})
+ srv.conns = make(map[net.Conn]struct{})
+
+ if srv.UDPSize == 0 {
+ srv.UDPSize = MinMsgSize
+ }
+ if srv.MsgAcceptFunc == nil {
+ srv.MsgAcceptFunc = DefaultMsgAcceptFunc
+ }
+ if srv.Handler == nil {
+ srv.Handler = DefaultServeMux
+ }
+
+ srv.udpPool.New = makeUDPBuffer(srv.UDPSize)
+}
+
+func unlockOnce(l sync.Locker) func() {
+ var once sync.Once
+ return func() { once.Do(l.Unlock) }
+}
+
+// ListenAndServe starts a nameserver on the configured address in *Server.
+func (srv *Server) ListenAndServe() error {
+ unlock := unlockOnce(&srv.lock)
+ srv.lock.Lock()
+ defer unlock()
+
+ if srv.started {
+ return &Error{err: "server already started"}
+ }
+
+ addr := srv.Addr
+ if addr == "" {
+ addr = ":domain"
+ }
+
+ srv.init()
+
+ switch srv.Net {
+ case "tcp", "tcp4", "tcp6":
+ l, err := listenTCP(srv.Net, addr, srv.ReusePort)
+ if err != nil {
+ return err
+ }
+ srv.Listener = l
+ srv.started = true
+ unlock()
+ return srv.serveTCP(l)
+ case "tcp-tls", "tcp4-tls", "tcp6-tls":
+ if srv.TLSConfig == nil || (len(srv.TLSConfig.Certificates) == 0 && srv.TLSConfig.GetCertificate == nil) {
+ return errors.New("dns: neither Certificates nor GetCertificate set in Config")
+ }
+ network := strings.TrimSuffix(srv.Net, "-tls")
+ l, err := listenTCP(network, addr, srv.ReusePort)
+ if err != nil {
+ return err
+ }
+ l = tls.NewListener(l, srv.TLSConfig)
+ srv.Listener = l
+ srv.started = true
+ unlock()
+ return srv.serveTCP(l)
+ case "udp", "udp4", "udp6":
+ l, err := listenUDP(srv.Net, addr, srv.ReusePort)
+ if err != nil {
+ return err
+ }
+ u := l.(*net.UDPConn)
+ if e := setUDPSocketOptions(u); e != nil {
+ return e
+ }
+ srv.PacketConn = l
+ srv.started = true
+ unlock()
+ return srv.serveUDP(u)
+ }
+ return &Error{err: "bad network"}
+}
+
+// ActivateAndServe starts a nameserver with the PacketConn or Listener
+// configured in *Server. Its main use is to start a server from systemd.
+func (srv *Server) ActivateAndServe() error {
+ unlock := unlockOnce(&srv.lock)
+ srv.lock.Lock()
+ defer unlock()
+
+ if srv.started {
+ return &Error{err: "server already started"}
+ }
+
+ srv.init()
+
+ pConn := srv.PacketConn
+ l := srv.Listener
+ if pConn != nil {
+ // Check PacketConn interface's type is valid and value
+ // is not nil
+ if t, ok := pConn.(*net.UDPConn); ok && t != nil {
+ if e := setUDPSocketOptions(t); e != nil {
+ return e
+ }
+ srv.started = true
+ unlock()
+ return srv.serveUDP(t)
+ }
+ }
+ if l != nil {
+ srv.started = true
+ unlock()
+ return srv.serveTCP(l)
+ }
+ return &Error{err: "bad listeners"}
+}
+
+// Shutdown shuts down a server. After a call to Shutdown, ListenAndServe and
+// ActivateAndServe will return.
+func (srv *Server) Shutdown() error {
+ return srv.ShutdownContext(context.Background())
+}
+
+// ShutdownContext shuts down a server. After a call to ShutdownContext,
+// ListenAndServe and ActivateAndServe will return.
+//
+// A context.Context may be passed to limit how long to wait for connections
+// to terminate.
+func (srv *Server) ShutdownContext(ctx context.Context) error {
+ srv.lock.Lock()
+ if !srv.started {
+ srv.lock.Unlock()
+ return &Error{err: "server not started"}
+ }
+
+ srv.started = false
+
+ if srv.PacketConn != nil {
+ srv.PacketConn.SetReadDeadline(aLongTimeAgo) // Unblock reads
+ }
+
+ if srv.Listener != nil {
+ srv.Listener.Close()
+ }
+
+ for rw := range srv.conns {
+ rw.SetReadDeadline(aLongTimeAgo) // Unblock reads
+ }
+
+ srv.lock.Unlock()
+
+ if testShutdownNotify != nil {
+ testShutdownNotify.Broadcast()
+ }
+
+ var ctxErr error
+ select {
+ case <-srv.shutdown:
+ case <-ctx.Done():
+ ctxErr = ctx.Err()
+ }
+
+ if srv.PacketConn != nil {
+ srv.PacketConn.Close()
+ }
+
+ return ctxErr
+}
+
+var testShutdownNotify *sync.Cond
+
+// getReadTimeout is a helper func to use system timeout if server did not intend to change it.
+func (srv *Server) getReadTimeout() time.Duration {
+ if srv.ReadTimeout != 0 {
+ return srv.ReadTimeout
+ }
+ return dnsTimeout
+}
+
+// serveTCP starts a TCP listener for the server.
+func (srv *Server) serveTCP(l net.Listener) error {
+ defer l.Close()
+
+ if srv.NotifyStartedFunc != nil {
+ srv.NotifyStartedFunc()
+ }
+
+ var wg sync.WaitGroup
+ defer func() {
+ wg.Wait()
+ close(srv.shutdown)
+ }()
+
+ for srv.isStarted() {
+ rw, err := l.Accept()
+ if err != nil {
+ if !srv.isStarted() {
+ return nil
+ }
+ if neterr, ok := err.(net.Error); ok && neterr.Temporary() {
+ continue
+ }
+ return err
+ }
+ srv.lock.Lock()
+ // Track the connection to allow unblocking reads on shutdown.
+ srv.conns[rw] = struct{}{}
+ srv.lock.Unlock()
+ wg.Add(1)
+ go srv.serveTCPConn(&wg, rw)
+ }
+
+ return nil
+}
+
+// serveUDP starts a UDP listener for the server.
+func (srv *Server) serveUDP(l *net.UDPConn) error {
+ defer l.Close()
+
+ if srv.NotifyStartedFunc != nil {
+ srv.NotifyStartedFunc()
+ }
+
+ reader := Reader(defaultReader{srv})
+ if srv.DecorateReader != nil {
+ reader = srv.DecorateReader(reader)
+ }
+
+ var wg sync.WaitGroup
+ defer func() {
+ wg.Wait()
+ close(srv.shutdown)
+ }()
+
+ rtimeout := srv.getReadTimeout()
+ // deadline is not used here
+ for srv.isStarted() {
+ m, s, err := reader.ReadUDP(l, rtimeout)
+ if err != nil {
+ if !srv.isStarted() {
+ return nil
+ }
+ if netErr, ok := err.(net.Error); ok && netErr.Temporary() {
+ continue
+ }
+ return err
+ }
+ if len(m) < headerSize {
+ if cap(m) == srv.UDPSize {
+ srv.udpPool.Put(m[:srv.UDPSize])
+ }
+ continue
+ }
+ wg.Add(1)
+ go srv.serveUDPPacket(&wg, m, l, s)
+ }
+
+ return nil
+}
+
+// Serve a new TCP connection.
+func (srv *Server) serveTCPConn(wg *sync.WaitGroup, rw net.Conn) {
+ w := &response{tsigSecret: srv.TsigSecret, tcp: rw}
+ if srv.DecorateWriter != nil {
+ w.writer = srv.DecorateWriter(w)
+ } else {
+ w.writer = w
+ }
+
+ reader := Reader(defaultReader{srv})
+ if srv.DecorateReader != nil {
+ reader = srv.DecorateReader(reader)
+ }
+
+ idleTimeout := tcpIdleTimeout
+ if srv.IdleTimeout != nil {
+ idleTimeout = srv.IdleTimeout()
+ }
+
+ timeout := srv.getReadTimeout()
+
+ limit := srv.MaxTCPQueries
+ if limit == 0 {
+ limit = maxTCPQueries
+ }
+
+ for q := 0; (q < limit || limit == -1) && srv.isStarted(); q++ {
+ m, err := reader.ReadTCP(w.tcp, timeout)
+ if err != nil {
+ // TODO(tmthrgd): handle error
+ break
+ }
+ srv.serveDNS(m, w)
+ if w.closed {
+ break // Close() was called
+ }
+ if w.hijacked {
+ break // client will call Close() themselves
+ }
+ // The first read uses the read timeout, the rest use the
+ // idle timeout.
+ timeout = idleTimeout
+ }
+
+ if !w.hijacked {
+ w.Close()
+ }
+
+ srv.lock.Lock()
+ delete(srv.conns, w.tcp)
+ srv.lock.Unlock()
+
+ wg.Done()
+}
+
+// Serve a new UDP request.
+func (srv *Server) serveUDPPacket(wg *sync.WaitGroup, m []byte, u *net.UDPConn, s *SessionUDP) {
+ w := &response{tsigSecret: srv.TsigSecret, udp: u, udpSession: s}
+ if srv.DecorateWriter != nil {
+ w.writer = srv.DecorateWriter(w)
+ } else {
+ w.writer = w
+ }
+
+ srv.serveDNS(m, w)
+ wg.Done()
+}
+
+func (srv *Server) serveDNS(m []byte, w *response) {
+ dh, off, err := unpackMsgHdr(m, 0)
+ if err != nil {
+ // Let client hang, they are sending crap; any reply can be used to amplify.
+ return
+ }
+
+ req := new(Msg)
+ req.setHdr(dh)
+
+ switch action := srv.MsgAcceptFunc(dh); action {
+ case MsgAccept:
+ if req.unpack(dh, m, off) == nil {
+ break
+ }
+
+ fallthrough
+ case MsgReject, MsgRejectNotImplemented:
+ opcode := req.Opcode
+ req.SetRcodeFormatError(req)
+ req.Zero = false
+ if action == MsgRejectNotImplemented {
+ req.Opcode = opcode
+ req.Rcode = RcodeNotImplemented
+ }
+
+ // Are we allowed to delete any OPT records here?
+ req.Ns, req.Answer, req.Extra = nil, nil, nil
+
+ w.WriteMsg(req)
+ fallthrough
+ case MsgIgnore:
+ if w.udp != nil && cap(m) == srv.UDPSize {
+ srv.udpPool.Put(m[:srv.UDPSize])
+ }
+
+ return
+ }
+
+ w.tsigStatus = nil
+ if w.tsigSecret != nil {
+ if t := req.IsTsig(); t != nil {
+ if secret, ok := w.tsigSecret[t.Hdr.Name]; ok {
+ w.tsigStatus = TsigVerify(m, secret, "", false)
+ } else {
+ w.tsigStatus = ErrSecret
+ }
+ w.tsigTimersOnly = false
+ w.tsigRequestMAC = req.Extra[len(req.Extra)-1].(*TSIG).MAC
+ }
+ }
+
+ if w.udp != nil && cap(m) == srv.UDPSize {
+ srv.udpPool.Put(m[:srv.UDPSize])
+ }
+
+ srv.Handler.ServeDNS(w, req) // Writes back to the client
+}
+
+func (srv *Server) readTCP(conn net.Conn, timeout time.Duration) ([]byte, error) {
+ // If we race with ShutdownContext, the read deadline may
+ // have been set in the distant past to unblock the read
+ // below. We must not override it, otherwise we may block
+ // ShutdownContext.
+ srv.lock.RLock()
+ if srv.started {
+ conn.SetReadDeadline(time.Now().Add(timeout))
+ }
+ srv.lock.RUnlock()
+
+ var length uint16
+ if err := binary.Read(conn, binary.BigEndian, &length); err != nil {
+ return nil, err
+ }
+
+ m := make([]byte, length)
+ if _, err := io.ReadFull(conn, m); err != nil {
+ return nil, err
+ }
+
+ return m, nil
+}
+
+func (srv *Server) readUDP(conn *net.UDPConn, timeout time.Duration) ([]byte, *SessionUDP, error) {
+ srv.lock.RLock()
+ if srv.started {
+ // See the comment in readTCP above.
+ conn.SetReadDeadline(time.Now().Add(timeout))
+ }
+ srv.lock.RUnlock()
+
+ m := srv.udpPool.Get().([]byte)
+ n, s, err := ReadFromSessionUDP(conn, m)
+ if err != nil {
+ srv.udpPool.Put(m)
+ return nil, nil, err
+ }
+ m = m[:n]
+ return m, s, nil
+}
+
+// WriteMsg implements the ResponseWriter.WriteMsg method.
+func (w *response) WriteMsg(m *Msg) (err error) {
+ if w.closed {
+ return &Error{err: "WriteMsg called after Close"}
+ }
+
+ var data []byte
+ if w.tsigSecret != nil { // if no secrets, dont check for the tsig (which is a longer check)
+ if t := m.IsTsig(); t != nil {
+ data, w.tsigRequestMAC, err = TsigGenerate(m, w.tsigSecret[t.Hdr.Name], w.tsigRequestMAC, w.tsigTimersOnly)
+ if err != nil {
+ return err
+ }
+ _, err = w.writer.Write(data)
+ return err
+ }
+ }
+ data, err = m.Pack()
+ if err != nil {
+ return err
+ }
+ _, err = w.writer.Write(data)
+ return err
+}
+
+// Write implements the ResponseWriter.Write method.
+func (w *response) Write(m []byte) (int, error) {
+ if w.closed {
+ return 0, &Error{err: "Write called after Close"}
+ }
+
+ switch {
+ case w.udp != nil:
+ return WriteToSessionUDP(w.udp, m, w.udpSession)
+ case w.tcp != nil:
+ if len(m) > MaxMsgSize {
+ return 0, &Error{err: "message too large"}
+ }
+
+ l := make([]byte, 2)
+ binary.BigEndian.PutUint16(l, uint16(len(m)))
+
+ n, err := (&net.Buffers{l, m}).WriteTo(w.tcp)
+ return int(n), err
+ default:
+ panic("dns: internal error: udp and tcp both nil")
+ }
+}
+
+// LocalAddr implements the ResponseWriter.LocalAddr method.
+func (w *response) LocalAddr() net.Addr {
+ switch {
+ case w.udp != nil:
+ return w.udp.LocalAddr()
+ case w.tcp != nil:
+ return w.tcp.LocalAddr()
+ default:
+ panic("dns: internal error: udp and tcp both nil")
+ }
+}
+
+// RemoteAddr implements the ResponseWriter.RemoteAddr method.
+func (w *response) RemoteAddr() net.Addr {
+ switch {
+ case w.udpSession != nil:
+ return w.udpSession.RemoteAddr()
+ case w.tcp != nil:
+ return w.tcp.RemoteAddr()
+ default:
+ panic("dns: internal error: udpSession and tcp both nil")
+ }
+}
+
+// TsigStatus implements the ResponseWriter.TsigStatus method.
+func (w *response) TsigStatus() error { return w.tsigStatus }
+
+// TsigTimersOnly implements the ResponseWriter.TsigTimersOnly method.
+func (w *response) TsigTimersOnly(b bool) { w.tsigTimersOnly = b }
+
+// Hijack implements the ResponseWriter.Hijack method.
+func (w *response) Hijack() { w.hijacked = true }
+
+// Close implements the ResponseWriter.Close method
+func (w *response) Close() error {
+ if w.closed {
+ return &Error{err: "connection already closed"}
+ }
+ w.closed = true
+
+ switch {
+ case w.udp != nil:
+ // Can't close the udp conn, as that is actually the listener.
+ return nil
+ case w.tcp != nil:
+ return w.tcp.Close()
+ default:
+ panic("dns: internal error: udp and tcp both nil")
+ }
+}
+
+// ConnectionState() implements the ConnectionStater.ConnectionState() interface.
+func (w *response) ConnectionState() *tls.ConnectionState {
+ type tlsConnectionStater interface {
+ ConnectionState() tls.ConnectionState
+ }
+ if v, ok := w.tcp.(tlsConnectionStater); ok {
+ t := v.ConnectionState()
+ return &t
+ }
+ return nil
+}
diff --git a/vendor/github.com/miekg/dns/sig0.go b/vendor/github.com/miekg/dns/sig0.go
new file mode 100644
index 0000000..55cf1c3
--- /dev/null
+++ b/vendor/github.com/miekg/dns/sig0.go
@@ -0,0 +1,209 @@
+package dns
+
+import (
+ "crypto"
+ "crypto/dsa"
+ "crypto/ecdsa"
+ "crypto/rsa"
+ "encoding/binary"
+ "math/big"
+ "strings"
+ "time"
+)
+
+// Sign signs a dns.Msg. It fills the signature with the appropriate data.
+// The SIG record should have the SignerName, KeyTag, Algorithm, Inception
+// and Expiration set.
+func (rr *SIG) Sign(k crypto.Signer, m *Msg) ([]byte, error) {
+ if k == nil {
+ return nil, ErrPrivKey
+ }
+ if rr.KeyTag == 0 || len(rr.SignerName) == 0 || rr.Algorithm == 0 {
+ return nil, ErrKey
+ }
+
+ rr.Hdr = RR_Header{Name: ".", Rrtype: TypeSIG, Class: ClassANY, Ttl: 0}
+ rr.OrigTtl, rr.TypeCovered, rr.Labels = 0, 0, 0
+
+ buf := make([]byte, m.Len()+Len(rr))
+ mbuf, err := m.PackBuffer(buf)
+ if err != nil {
+ return nil, err
+ }
+ if &buf[0] != &mbuf[0] {
+ return nil, ErrBuf
+ }
+ off, err := PackRR(rr, buf, len(mbuf), nil, false)
+ if err != nil {
+ return nil, err
+ }
+ buf = buf[:off:cap(buf)]
+
+ hash, ok := AlgorithmToHash[rr.Algorithm]
+ if !ok {
+ return nil, ErrAlg
+ }
+
+ hasher := hash.New()
+ // Write SIG rdata
+ hasher.Write(buf[len(mbuf)+1+2+2+4+2:])
+ // Write message
+ hasher.Write(buf[:len(mbuf)])
+
+ signature, err := sign(k, hasher.Sum(nil), hash, rr.Algorithm)
+ if err != nil {
+ return nil, err
+ }
+
+ rr.Signature = toBase64(signature)
+
+ buf = append(buf, signature...)
+ if len(buf) > int(^uint16(0)) {
+ return nil, ErrBuf
+ }
+ // Adjust sig data length
+ rdoff := len(mbuf) + 1 + 2 + 2 + 4
+ rdlen := binary.BigEndian.Uint16(buf[rdoff:])
+ rdlen += uint16(len(signature))
+ binary.BigEndian.PutUint16(buf[rdoff:], rdlen)
+ // Adjust additional count
+ adc := binary.BigEndian.Uint16(buf[10:])
+ adc++
+ binary.BigEndian.PutUint16(buf[10:], adc)
+ return buf, nil
+}
+
+// Verify validates the message buf using the key k.
+// It's assumed that buf is a valid message from which rr was unpacked.
+func (rr *SIG) Verify(k *KEY, buf []byte) error {
+ if k == nil {
+ return ErrKey
+ }
+ if rr.KeyTag == 0 || len(rr.SignerName) == 0 || rr.Algorithm == 0 {
+ return ErrKey
+ }
+
+ var hash crypto.Hash
+ switch rr.Algorithm {
+ case DSA, RSASHA1:
+ hash = crypto.SHA1
+ case RSASHA256, ECDSAP256SHA256:
+ hash = crypto.SHA256
+ case ECDSAP384SHA384:
+ hash = crypto.SHA384
+ case RSASHA512:
+ hash = crypto.SHA512
+ default:
+ return ErrAlg
+ }
+ hasher := hash.New()
+
+ buflen := len(buf)
+ qdc := binary.BigEndian.Uint16(buf[4:])
+ anc := binary.BigEndian.Uint16(buf[6:])
+ auc := binary.BigEndian.Uint16(buf[8:])
+ adc := binary.BigEndian.Uint16(buf[10:])
+ offset := headerSize
+ var err error
+ for i := uint16(0); i < qdc && offset < buflen; i++ {
+ _, offset, err = UnpackDomainName(buf, offset)
+ if err != nil {
+ return err
+ }
+ // Skip past Type and Class
+ offset += 2 + 2
+ }
+ for i := uint16(1); i < anc+auc+adc && offset < buflen; i++ {
+ _, offset, err = UnpackDomainName(buf, offset)
+ if err != nil {
+ return err
+ }
+ // Skip past Type, Class and TTL
+ offset += 2 + 2 + 4
+ if offset+1 >= buflen {
+ continue
+ }
+ rdlen := binary.BigEndian.Uint16(buf[offset:])
+ offset += 2
+ offset += int(rdlen)
+ }
+ if offset >= buflen {
+ return &Error{err: "overflowing unpacking signed message"}
+ }
+
+ // offset should be just prior to SIG
+ bodyend := offset
+ // owner name SHOULD be root
+ _, offset, err = UnpackDomainName(buf, offset)
+ if err != nil {
+ return err
+ }
+ // Skip Type, Class, TTL, RDLen
+ offset += 2 + 2 + 4 + 2
+ sigstart := offset
+ // Skip Type Covered, Algorithm, Labels, Original TTL
+ offset += 2 + 1 + 1 + 4
+ if offset+4+4 >= buflen {
+ return &Error{err: "overflow unpacking signed message"}
+ }
+ expire := binary.BigEndian.Uint32(buf[offset:])
+ offset += 4
+ incept := binary.BigEndian.Uint32(buf[offset:])
+ offset += 4
+ now := uint32(time.Now().Unix())
+ if now < incept || now > expire {
+ return ErrTime
+ }
+ // Skip key tag
+ offset += 2
+ var signername string
+ signername, offset, err = UnpackDomainName(buf, offset)
+ if err != nil {
+ return err
+ }
+ // If key has come from the DNS name compression might
+ // have mangled the case of the name
+ if !strings.EqualFold(signername, k.Header().Name) {
+ return &Error{err: "signer name doesn't match key name"}
+ }
+ sigend := offset
+ hasher.Write(buf[sigstart:sigend])
+ hasher.Write(buf[:10])
+ hasher.Write([]byte{
+ byte((adc - 1) << 8),
+ byte(adc - 1),
+ })
+ hasher.Write(buf[12:bodyend])
+
+ hashed := hasher.Sum(nil)
+ sig := buf[sigend:]
+ switch k.Algorithm {
+ case DSA:
+ pk := k.publicKeyDSA()
+ sig = sig[1:]
+ r := new(big.Int).SetBytes(sig[:len(sig)/2])
+ s := new(big.Int).SetBytes(sig[len(sig)/2:])
+ if pk != nil {
+ if dsa.Verify(pk, hashed, r, s) {
+ return nil
+ }
+ return ErrSig
+ }
+ case RSASHA1, RSASHA256, RSASHA512:
+ pk := k.publicKeyRSA()
+ if pk != nil {
+ return rsa.VerifyPKCS1v15(pk, hash, hashed, sig)
+ }
+ case ECDSAP256SHA256, ECDSAP384SHA384:
+ pk := k.publicKeyECDSA()
+ r := new(big.Int).SetBytes(sig[:len(sig)/2])
+ s := new(big.Int).SetBytes(sig[len(sig)/2:])
+ if pk != nil {
+ if ecdsa.Verify(pk, hashed, r, s) {
+ return nil
+ }
+ return ErrSig
+ }
+ }
+ return ErrKeyAlg
+}
diff --git a/vendor/github.com/miekg/dns/singleinflight.go b/vendor/github.com/miekg/dns/singleinflight.go
new file mode 100644
index 0000000..febcc30
--- /dev/null
+++ b/vendor/github.com/miekg/dns/singleinflight.go
@@ -0,0 +1,61 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Adapted for dns package usage by Miek Gieben.
+
+package dns
+
+import "sync"
+import "time"
+
+// call is an in-flight or completed singleflight.Do call
+type call struct {
+ wg sync.WaitGroup
+ val *Msg
+ rtt time.Duration
+ err error
+ dups int
+}
+
+// singleflight represents a class of work and forms a namespace in
+// which units of work can be executed with duplicate suppression.
+type singleflight struct {
+ sync.Mutex // protects m
+ m map[string]*call // lazily initialized
+
+ dontDeleteForTesting bool // this is only to be used by TestConcurrentExchanges
+}
+
+// Do executes and returns the results of the given function, making
+// sure that only one execution is in-flight for a given key at a
+// time. If a duplicate comes in, the duplicate caller waits for the
+// original to complete and receives the same results.
+// The return value shared indicates whether v was given to multiple callers.
+func (g *singleflight) Do(key string, fn func() (*Msg, time.Duration, error)) (v *Msg, rtt time.Duration, err error, shared bool) {
+ g.Lock()
+ if g.m == nil {
+ g.m = make(map[string]*call)
+ }
+ if c, ok := g.m[key]; ok {
+ c.dups++
+ g.Unlock()
+ c.wg.Wait()
+ return c.val, c.rtt, c.err, true
+ }
+ c := new(call)
+ c.wg.Add(1)
+ g.m[key] = c
+ g.Unlock()
+
+ c.val, c.rtt, c.err = fn()
+ c.wg.Done()
+
+ if !g.dontDeleteForTesting {
+ g.Lock()
+ delete(g.m, key)
+ g.Unlock()
+ }
+
+ return c.val, c.rtt, c.err, c.dups > 0
+}
diff --git a/vendor/github.com/miekg/dns/smimea.go b/vendor/github.com/miekg/dns/smimea.go
new file mode 100644
index 0000000..89f09f0
--- /dev/null
+++ b/vendor/github.com/miekg/dns/smimea.go
@@ -0,0 +1,44 @@
+package dns
+
+import (
+ "crypto/sha256"
+ "crypto/x509"
+ "encoding/hex"
+)
+
+// Sign creates a SMIMEA record from an SSL certificate.
+func (r *SMIMEA) Sign(usage, selector, matchingType int, cert *x509.Certificate) (err error) {
+ r.Hdr.Rrtype = TypeSMIMEA
+ r.Usage = uint8(usage)
+ r.Selector = uint8(selector)
+ r.MatchingType = uint8(matchingType)
+
+ r.Certificate, err = CertificateToDANE(r.Selector, r.MatchingType, cert)
+ return err
+}
+
+// Verify verifies a SMIMEA record against an SSL certificate. If it is OK
+// a nil error is returned.
+func (r *SMIMEA) Verify(cert *x509.Certificate) error {
+ c, err := CertificateToDANE(r.Selector, r.MatchingType, cert)
+ if err != nil {
+ return err // Not also ErrSig?
+ }
+ if r.Certificate == c {
+ return nil
+ }
+ return ErrSig // ErrSig, really?
+}
+
+// SMIMEAName returns the ownername of a SMIMEA resource record as per the
+// format specified in RFC 'draft-ietf-dane-smime-12' Section 2 and 3
+func SMIMEAName(email, domain string) (string, error) {
+ hasher := sha256.New()
+ hasher.Write([]byte(email))
+
+ // RFC Section 3: "The local-part is hashed using the SHA2-256
+ // algorithm with the hash truncated to 28 octets and
+ // represented in its hexadecimal representation to become the
+ // left-most label in the prepared domain name"
+ return hex.EncodeToString(hasher.Sum(nil)[:28]) + "." + "_smimecert." + domain, nil
+}
diff --git a/vendor/github.com/miekg/dns/tlsa.go b/vendor/github.com/miekg/dns/tlsa.go
new file mode 100644
index 0000000..4e07983
--- /dev/null
+++ b/vendor/github.com/miekg/dns/tlsa.go
@@ -0,0 +1,44 @@
+package dns
+
+import (
+ "crypto/x509"
+ "net"
+ "strconv"
+)
+
+// Sign creates a TLSA record from an SSL certificate.
+func (r *TLSA) Sign(usage, selector, matchingType int, cert *x509.Certificate) (err error) {
+ r.Hdr.Rrtype = TypeTLSA
+ r.Usage = uint8(usage)
+ r.Selector = uint8(selector)
+ r.MatchingType = uint8(matchingType)
+
+ r.Certificate, err = CertificateToDANE(r.Selector, r.MatchingType, cert)
+ return err
+}
+
+// Verify verifies a TLSA record against an SSL certificate. If it is OK
+// a nil error is returned.
+func (r *TLSA) Verify(cert *x509.Certificate) error {
+ c, err := CertificateToDANE(r.Selector, r.MatchingType, cert)
+ if err != nil {
+ return err // Not also ErrSig?
+ }
+ if r.Certificate == c {
+ return nil
+ }
+ return ErrSig // ErrSig, really?
+}
+
+// TLSAName returns the ownername of a TLSA resource record as per the
+// rules specified in RFC 6698, Section 3.
+func TLSAName(name, service, network string) (string, error) {
+ if !IsFqdn(name) {
+ return "", ErrFqdn
+ }
+ p, err := net.LookupPort(network, service)
+ if err != nil {
+ return "", err
+ }
+ return "_" + strconv.Itoa(p) + "._" + network + "." + name, nil
+}
diff --git a/vendor/github.com/miekg/dns/tsig.go b/vendor/github.com/miekg/dns/tsig.go
new file mode 100644
index 0000000..61efa24
--- /dev/null
+++ b/vendor/github.com/miekg/dns/tsig.go
@@ -0,0 +1,389 @@
+package dns
+
+import (
+ "crypto/hmac"
+ "crypto/md5"
+ "crypto/sha1"
+ "crypto/sha256"
+ "crypto/sha512"
+ "encoding/binary"
+ "encoding/hex"
+ "hash"
+ "strconv"
+ "strings"
+ "time"
+)
+
+// HMAC hashing codes. These are transmitted as domain names.
+const (
+ HmacMD5 = "hmac-md5.sig-alg.reg.int."
+ HmacSHA1 = "hmac-sha1."
+ HmacSHA256 = "hmac-sha256."
+ HmacSHA512 = "hmac-sha512."
+)
+
+// TSIG is the RR the holds the transaction signature of a message.
+// See RFC 2845 and RFC 4635.
+type TSIG struct {
+ Hdr RR_Header
+ Algorithm string `dns:"domain-name"`
+ TimeSigned uint64 `dns:"uint48"`
+ Fudge uint16
+ MACSize uint16
+ MAC string `dns:"size-hex:MACSize"`
+ OrigId uint16
+ Error uint16
+ OtherLen uint16
+ OtherData string `dns:"size-hex:OtherLen"`
+}
+
+// TSIG has no official presentation format, but this will suffice.
+
+func (rr *TSIG) String() string {
+ s := "\n;; TSIG PSEUDOSECTION:\n; " // add another semi-colon to signify TSIG does not have a presentation format
+ s += rr.Hdr.String() +
+ " " + rr.Algorithm +
+ " " + tsigTimeToString(rr.TimeSigned) +
+ " " + strconv.Itoa(int(rr.Fudge)) +
+ " " + strconv.Itoa(int(rr.MACSize)) +
+ " " + strings.ToUpper(rr.MAC) +
+ " " + strconv.Itoa(int(rr.OrigId)) +
+ " " + strconv.Itoa(int(rr.Error)) + // BIND prints NOERROR
+ " " + strconv.Itoa(int(rr.OtherLen)) +
+ " " + rr.OtherData
+ return s
+}
+
+func (rr *TSIG) parse(c *zlexer, origin string) *ParseError {
+ panic("dns: internal error: parse should never be called on TSIG")
+}
+
+// The following values must be put in wireformat, so that the MAC can be calculated.
+// RFC 2845, section 3.4.2. TSIG Variables.
+type tsigWireFmt struct {
+ // From RR_Header
+ Name string `dns:"domain-name"`
+ Class uint16
+ Ttl uint32
+ // Rdata of the TSIG
+ Algorithm string `dns:"domain-name"`
+ TimeSigned uint64 `dns:"uint48"`
+ Fudge uint16
+ // MACSize, MAC and OrigId excluded
+ Error uint16
+ OtherLen uint16
+ OtherData string `dns:"size-hex:OtherLen"`
+}
+
+// If we have the MAC use this type to convert it to wiredata. Section 3.4.3. Request MAC
+type macWireFmt struct {
+ MACSize uint16
+ MAC string `dns:"size-hex:MACSize"`
+}
+
+// 3.3. Time values used in TSIG calculations
+type timerWireFmt struct {
+ TimeSigned uint64 `dns:"uint48"`
+ Fudge uint16
+}
+
+// TsigGenerate fills out the TSIG record attached to the message.
+// The message should contain
+// a "stub" TSIG RR with the algorithm, key name (owner name of the RR),
+// time fudge (defaults to 300 seconds) and the current time
+// The TSIG MAC is saved in that Tsig RR.
+// When TsigGenerate is called for the first time requestMAC is set to the empty string and
+// timersOnly is false.
+// If something goes wrong an error is returned, otherwise it is nil.
+func TsigGenerate(m *Msg, secret, requestMAC string, timersOnly bool) ([]byte, string, error) {
+ if m.IsTsig() == nil {
+ panic("dns: TSIG not last RR in additional")
+ }
+ // If we barf here, the caller is to blame
+ rawsecret, err := fromBase64([]byte(secret))
+ if err != nil {
+ return nil, "", err
+ }
+
+ rr := m.Extra[len(m.Extra)-1].(*TSIG)
+ m.Extra = m.Extra[0 : len(m.Extra)-1] // kill the TSIG from the msg
+ mbuf, err := m.Pack()
+ if err != nil {
+ return nil, "", err
+ }
+ buf := tsigBuffer(mbuf, rr, requestMAC, timersOnly)
+
+ t := new(TSIG)
+ var h hash.Hash
+ switch strings.ToLower(rr.Algorithm) {
+ case HmacMD5:
+ h = hmac.New(md5.New, rawsecret)
+ case HmacSHA1:
+ h = hmac.New(sha1.New, rawsecret)
+ case HmacSHA256:
+ h = hmac.New(sha256.New, rawsecret)
+ case HmacSHA512:
+ h = hmac.New(sha512.New, rawsecret)
+ default:
+ return nil, "", ErrKeyAlg
+ }
+ h.Write(buf)
+ t.MAC = hex.EncodeToString(h.Sum(nil))
+ t.MACSize = uint16(len(t.MAC) / 2) // Size is half!
+
+ t.Hdr = RR_Header{Name: rr.Hdr.Name, Rrtype: TypeTSIG, Class: ClassANY, Ttl: 0}
+ t.Fudge = rr.Fudge
+ t.TimeSigned = rr.TimeSigned
+ t.Algorithm = rr.Algorithm
+ t.OrigId = m.Id
+
+ tbuf := make([]byte, Len(t))
+ off, err := PackRR(t, tbuf, 0, nil, false)
+ if err != nil {
+ return nil, "", err
+ }
+ mbuf = append(mbuf, tbuf[:off]...)
+ // Update the ArCount directly in the buffer.
+ binary.BigEndian.PutUint16(mbuf[10:], uint16(len(m.Extra)+1))
+
+ return mbuf, t.MAC, nil
+}
+
+// TsigVerify verifies the TSIG on a message.
+// If the signature does not validate err contains the
+// error, otherwise it is nil.
+func TsigVerify(msg []byte, secret, requestMAC string, timersOnly bool) error {
+ rawsecret, err := fromBase64([]byte(secret))
+ if err != nil {
+ return err
+ }
+ // Strip the TSIG from the incoming msg
+ stripped, tsig, err := stripTsig(msg)
+ if err != nil {
+ return err
+ }
+
+ msgMAC, err := hex.DecodeString(tsig.MAC)
+ if err != nil {
+ return err
+ }
+
+ buf := tsigBuffer(stripped, tsig, requestMAC, timersOnly)
+
+ // Fudge factor works both ways. A message can arrive before it was signed because
+ // of clock skew.
+ now := uint64(time.Now().Unix())
+ ti := now - tsig.TimeSigned
+ if now < tsig.TimeSigned {
+ ti = tsig.TimeSigned - now
+ }
+ if uint64(tsig.Fudge) < ti {
+ return ErrTime
+ }
+
+ var h hash.Hash
+ switch strings.ToLower(tsig.Algorithm) {
+ case HmacMD5:
+ h = hmac.New(md5.New, rawsecret)
+ case HmacSHA1:
+ h = hmac.New(sha1.New, rawsecret)
+ case HmacSHA256:
+ h = hmac.New(sha256.New, rawsecret)
+ case HmacSHA512:
+ h = hmac.New(sha512.New, rawsecret)
+ default:
+ return ErrKeyAlg
+ }
+ h.Write(buf)
+ if !hmac.Equal(h.Sum(nil), msgMAC) {
+ return ErrSig
+ }
+ return nil
+}
+
+// Create a wiredata buffer for the MAC calculation.
+func tsigBuffer(msgbuf []byte, rr *TSIG, requestMAC string, timersOnly bool) []byte {
+ var buf []byte
+ if rr.TimeSigned == 0 {
+ rr.TimeSigned = uint64(time.Now().Unix())
+ }
+ if rr.Fudge == 0 {
+ rr.Fudge = 300 // Standard (RFC) default.
+ }
+
+ // Replace message ID in header with original ID from TSIG
+ binary.BigEndian.PutUint16(msgbuf[0:2], rr.OrigId)
+
+ if requestMAC != "" {
+ m := new(macWireFmt)
+ m.MACSize = uint16(len(requestMAC) / 2)
+ m.MAC = requestMAC
+ buf = make([]byte, len(requestMAC)) // long enough
+ n, _ := packMacWire(m, buf)
+ buf = buf[:n]
+ }
+
+ tsigvar := make([]byte, DefaultMsgSize)
+ if timersOnly {
+ tsig := new(timerWireFmt)
+ tsig.TimeSigned = rr.TimeSigned
+ tsig.Fudge = rr.Fudge
+ n, _ := packTimerWire(tsig, tsigvar)
+ tsigvar = tsigvar[:n]
+ } else {
+ tsig := new(tsigWireFmt)
+ tsig.Name = strings.ToLower(rr.Hdr.Name)
+ tsig.Class = ClassANY
+ tsig.Ttl = rr.Hdr.Ttl
+ tsig.Algorithm = strings.ToLower(rr.Algorithm)
+ tsig.TimeSigned = rr.TimeSigned
+ tsig.Fudge = rr.Fudge
+ tsig.Error = rr.Error
+ tsig.OtherLen = rr.OtherLen
+ tsig.OtherData = rr.OtherData
+ n, _ := packTsigWire(tsig, tsigvar)
+ tsigvar = tsigvar[:n]
+ }
+
+ if requestMAC != "" {
+ x := append(buf, msgbuf...)
+ buf = append(x, tsigvar...)
+ } else {
+ buf = append(msgbuf, tsigvar...)
+ }
+ return buf
+}
+
+// Strip the TSIG from the raw message.
+func stripTsig(msg []byte) ([]byte, *TSIG, error) {
+ // Copied from msg.go's Unpack() Header, but modified.
+ var (
+ dh Header
+ err error
+ )
+ off, tsigoff := 0, 0
+
+ if dh, off, err = unpackMsgHdr(msg, off); err != nil {
+ return nil, nil, err
+ }
+ if dh.Arcount == 0 {
+ return nil, nil, ErrNoSig
+ }
+
+ // Rcode, see msg.go Unpack()
+ if int(dh.Bits&0xF) == RcodeNotAuth {
+ return nil, nil, ErrAuth
+ }
+
+ for i := 0; i < int(dh.Qdcount); i++ {
+ _, off, err = unpackQuestion(msg, off)
+ if err != nil {
+ return nil, nil, err
+ }
+ }
+
+ _, off, err = unpackRRslice(int(dh.Ancount), msg, off)
+ if err != nil {
+ return nil, nil, err
+ }
+ _, off, err = unpackRRslice(int(dh.Nscount), msg, off)
+ if err != nil {
+ return nil, nil, err
+ }
+
+ rr := new(TSIG)
+ var extra RR
+ for i := 0; i < int(dh.Arcount); i++ {
+ tsigoff = off
+ extra, off, err = UnpackRR(msg, off)
+ if err != nil {
+ return nil, nil, err
+ }
+ if extra.Header().Rrtype == TypeTSIG {
+ rr = extra.(*TSIG)
+ // Adjust Arcount.
+ arcount := binary.BigEndian.Uint16(msg[10:])
+ binary.BigEndian.PutUint16(msg[10:], arcount-1)
+ break
+ }
+ }
+ if rr == nil {
+ return nil, nil, ErrNoSig
+ }
+ return msg[:tsigoff], rr, nil
+}
+
+// Translate the TSIG time signed into a date. There is no
+// need for RFC1982 calculations as this date is 48 bits.
+func tsigTimeToString(t uint64) string {
+ ti := time.Unix(int64(t), 0).UTC()
+ return ti.Format("20060102150405")
+}
+
+func packTsigWire(tw *tsigWireFmt, msg []byte) (int, error) {
+ // copied from zmsg.go TSIG packing
+ // RR_Header
+ off, err := PackDomainName(tw.Name, msg, 0, nil, false)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(tw.Class, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(tw.Ttl, msg, off)
+ if err != nil {
+ return off, err
+ }
+
+ off, err = PackDomainName(tw.Algorithm, msg, off, nil, false)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint48(tw.TimeSigned, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(tw.Fudge, msg, off)
+ if err != nil {
+ return off, err
+ }
+
+ off, err = packUint16(tw.Error, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(tw.OtherLen, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringHex(tw.OtherData, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func packMacWire(mw *macWireFmt, msg []byte) (int, error) {
+ off, err := packUint16(mw.MACSize, msg, 0)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringHex(mw.MAC, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func packTimerWire(tw *timerWireFmt, msg []byte) (int, error) {
+ off, err := packUint48(tw.TimeSigned, msg, 0)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(tw.Fudge, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
diff --git a/vendor/github.com/miekg/dns/types.go b/vendor/github.com/miekg/dns/types.go
new file mode 100644
index 0000000..a6048cb
--- /dev/null
+++ b/vendor/github.com/miekg/dns/types.go
@@ -0,0 +1,1527 @@
+package dns
+
+import (
+ "bytes"
+ "fmt"
+ "net"
+ "strconv"
+ "strings"
+ "time"
+)
+
+type (
+ // Type is a DNS type.
+ Type uint16
+ // Class is a DNS class.
+ Class uint16
+ // Name is a DNS domain name.
+ Name string
+)
+
+// Packet formats
+
+// Wire constants and supported types.
+const (
+ // valid RR_Header.Rrtype and Question.qtype
+
+ TypeNone uint16 = 0
+ TypeA uint16 = 1
+ TypeNS uint16 = 2
+ TypeMD uint16 = 3
+ TypeMF uint16 = 4
+ TypeCNAME uint16 = 5
+ TypeSOA uint16 = 6
+ TypeMB uint16 = 7
+ TypeMG uint16 = 8
+ TypeMR uint16 = 9
+ TypeNULL uint16 = 10
+ TypePTR uint16 = 12
+ TypeHINFO uint16 = 13
+ TypeMINFO uint16 = 14
+ TypeMX uint16 = 15
+ TypeTXT uint16 = 16
+ TypeRP uint16 = 17
+ TypeAFSDB uint16 = 18
+ TypeX25 uint16 = 19
+ TypeISDN uint16 = 20
+ TypeRT uint16 = 21
+ TypeNSAPPTR uint16 = 23
+ TypeSIG uint16 = 24
+ TypeKEY uint16 = 25
+ TypePX uint16 = 26
+ TypeGPOS uint16 = 27
+ TypeAAAA uint16 = 28
+ TypeLOC uint16 = 29
+ TypeNXT uint16 = 30
+ TypeEID uint16 = 31
+ TypeNIMLOC uint16 = 32
+ TypeSRV uint16 = 33
+ TypeATMA uint16 = 34
+ TypeNAPTR uint16 = 35
+ TypeKX uint16 = 36
+ TypeCERT uint16 = 37
+ TypeDNAME uint16 = 39
+ TypeOPT uint16 = 41 // EDNS
+ TypeAPL uint16 = 42
+ TypeDS uint16 = 43
+ TypeSSHFP uint16 = 44
+ TypeRRSIG uint16 = 46
+ TypeNSEC uint16 = 47
+ TypeDNSKEY uint16 = 48
+ TypeDHCID uint16 = 49
+ TypeNSEC3 uint16 = 50
+ TypeNSEC3PARAM uint16 = 51
+ TypeTLSA uint16 = 52
+ TypeSMIMEA uint16 = 53
+ TypeHIP uint16 = 55
+ TypeNINFO uint16 = 56
+ TypeRKEY uint16 = 57
+ TypeTALINK uint16 = 58
+ TypeCDS uint16 = 59
+ TypeCDNSKEY uint16 = 60
+ TypeOPENPGPKEY uint16 = 61
+ TypeCSYNC uint16 = 62
+ TypeSPF uint16 = 99
+ TypeUINFO uint16 = 100
+ TypeUID uint16 = 101
+ TypeGID uint16 = 102
+ TypeUNSPEC uint16 = 103
+ TypeNID uint16 = 104
+ TypeL32 uint16 = 105
+ TypeL64 uint16 = 106
+ TypeLP uint16 = 107
+ TypeEUI48 uint16 = 108
+ TypeEUI64 uint16 = 109
+ TypeURI uint16 = 256
+ TypeCAA uint16 = 257
+ TypeAVC uint16 = 258
+
+ TypeTKEY uint16 = 249
+ TypeTSIG uint16 = 250
+
+ // valid Question.Qtype only
+ TypeIXFR uint16 = 251
+ TypeAXFR uint16 = 252
+ TypeMAILB uint16 = 253
+ TypeMAILA uint16 = 254
+ TypeANY uint16 = 255
+
+ TypeTA uint16 = 32768
+ TypeDLV uint16 = 32769
+ TypeReserved uint16 = 65535
+
+ // valid Question.Qclass
+ ClassINET = 1
+ ClassCSNET = 2
+ ClassCHAOS = 3
+ ClassHESIOD = 4
+ ClassNONE = 254
+ ClassANY = 255
+
+ // Message Response Codes, see https://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml
+ RcodeSuccess = 0 // NoError - No Error [DNS]
+ RcodeFormatError = 1 // FormErr - Format Error [DNS]
+ RcodeServerFailure = 2 // ServFail - Server Failure [DNS]
+ RcodeNameError = 3 // NXDomain - Non-Existent Domain [DNS]
+ RcodeNotImplemented = 4 // NotImp - Not Implemented [DNS]
+ RcodeRefused = 5 // Refused - Query Refused [DNS]
+ RcodeYXDomain = 6 // YXDomain - Name Exists when it should not [DNS Update]
+ RcodeYXRrset = 7 // YXRRSet - RR Set Exists when it should not [DNS Update]
+ RcodeNXRrset = 8 // NXRRSet - RR Set that should exist does not [DNS Update]
+ RcodeNotAuth = 9 // NotAuth - Server Not Authoritative for zone [DNS Update]
+ RcodeNotZone = 10 // NotZone - Name not contained in zone [DNS Update/TSIG]
+ RcodeBadSig = 16 // BADSIG - TSIG Signature Failure [TSIG]
+ RcodeBadVers = 16 // BADVERS - Bad OPT Version [EDNS0]
+ RcodeBadKey = 17 // BADKEY - Key not recognized [TSIG]
+ RcodeBadTime = 18 // BADTIME - Signature out of time window [TSIG]
+ RcodeBadMode = 19 // BADMODE - Bad TKEY Mode [TKEY]
+ RcodeBadName = 20 // BADNAME - Duplicate key name [TKEY]
+ RcodeBadAlg = 21 // BADALG - Algorithm not supported [TKEY]
+ RcodeBadTrunc = 22 // BADTRUNC - Bad Truncation [TSIG]
+ RcodeBadCookie = 23 // BADCOOKIE - Bad/missing Server Cookie [DNS Cookies]
+
+ // Message Opcodes. There is no 3.
+ OpcodeQuery = 0
+ OpcodeIQuery = 1
+ OpcodeStatus = 2
+ OpcodeNotify = 4
+ OpcodeUpdate = 5
+)
+
+// Header is the wire format for the DNS packet header.
+type Header struct {
+ Id uint16
+ Bits uint16
+ Qdcount, Ancount, Nscount, Arcount uint16
+}
+
+const (
+ headerSize = 12
+
+ // Header.Bits
+ _QR = 1 << 15 // query/response (response=1)
+ _AA = 1 << 10 // authoritative
+ _TC = 1 << 9 // truncated
+ _RD = 1 << 8 // recursion desired
+ _RA = 1 << 7 // recursion available
+ _Z = 1 << 6 // Z
+ _AD = 1 << 5 // authticated data
+ _CD = 1 << 4 // checking disabled
+)
+
+// Various constants used in the LOC RR, See RFC 1887.
+const (
+ LOC_EQUATOR = 1 << 31 // RFC 1876, Section 2.
+ LOC_PRIMEMERIDIAN = 1 << 31 // RFC 1876, Section 2.
+ LOC_HOURS = 60 * 1000
+ LOC_DEGREES = 60 * LOC_HOURS
+ LOC_ALTITUDEBASE = 100000
+)
+
+// Different Certificate Types, see RFC 4398, Section 2.1
+const (
+ CertPKIX = 1 + iota
+ CertSPKI
+ CertPGP
+ CertIPIX
+ CertISPKI
+ CertIPGP
+ CertACPKIX
+ CertIACPKIX
+ CertURI = 253
+ CertOID = 254
+)
+
+// CertTypeToString converts the Cert Type to its string representation.
+// See RFC 4398 and RFC 6944.
+var CertTypeToString = map[uint16]string{
+ CertPKIX: "PKIX",
+ CertSPKI: "SPKI",
+ CertPGP: "PGP",
+ CertIPIX: "IPIX",
+ CertISPKI: "ISPKI",
+ CertIPGP: "IPGP",
+ CertACPKIX: "ACPKIX",
+ CertIACPKIX: "IACPKIX",
+ CertURI: "URI",
+ CertOID: "OID",
+}
+
+//go:generate go run types_generate.go
+
+// Question holds a DNS question. There can be multiple questions in the
+// question section of a message. Usually there is just one.
+type Question struct {
+ Name string `dns:"cdomain-name"` // "cdomain-name" specifies encoding (and may be compressed)
+ Qtype uint16
+ Qclass uint16
+}
+
+func (q *Question) len(off int, compression map[string]struct{}) int {
+ l := domainNameLen(q.Name, off, compression, true)
+ l += 2 + 2
+ return l
+}
+
+func (q *Question) String() (s string) {
+ // prefix with ; (as in dig)
+ s = ";" + sprintName(q.Name) + "\t"
+ s += Class(q.Qclass).String() + "\t"
+ s += " " + Type(q.Qtype).String()
+ return s
+}
+
+// ANY is a wildcard record. See RFC 1035, Section 3.2.3. ANY
+// is named "*" there.
+type ANY struct {
+ Hdr RR_Header
+ // Does not have any rdata
+}
+
+func (rr *ANY) String() string { return rr.Hdr.String() }
+
+func (rr *ANY) parse(c *zlexer, origin string) *ParseError {
+ panic("dns: internal error: parse should never be called on ANY")
+}
+
+// NULL RR. See RFC 1035.
+type NULL struct {
+ Hdr RR_Header
+ Data string `dns:"any"`
+}
+
+func (rr *NULL) String() string {
+ // There is no presentation format; prefix string with a comment.
+ return ";" + rr.Hdr.String() + rr.Data
+}
+
+func (rr *NULL) parse(c *zlexer, origin string) *ParseError {
+ panic("dns: internal error: parse should never be called on NULL")
+}
+
+// CNAME RR. See RFC 1034.
+type CNAME struct {
+ Hdr RR_Header
+ Target string `dns:"cdomain-name"`
+}
+
+func (rr *CNAME) String() string { return rr.Hdr.String() + sprintName(rr.Target) }
+
+// HINFO RR. See RFC 1034.
+type HINFO struct {
+ Hdr RR_Header
+ Cpu string
+ Os string
+}
+
+func (rr *HINFO) String() string {
+ return rr.Hdr.String() + sprintTxt([]string{rr.Cpu, rr.Os})
+}
+
+// MB RR. See RFC 1035.
+type MB struct {
+ Hdr RR_Header
+ Mb string `dns:"cdomain-name"`
+}
+
+func (rr *MB) String() string { return rr.Hdr.String() + sprintName(rr.Mb) }
+
+// MG RR. See RFC 1035.
+type MG struct {
+ Hdr RR_Header
+ Mg string `dns:"cdomain-name"`
+}
+
+func (rr *MG) String() string { return rr.Hdr.String() + sprintName(rr.Mg) }
+
+// MINFO RR. See RFC 1035.
+type MINFO struct {
+ Hdr RR_Header
+ Rmail string `dns:"cdomain-name"`
+ Email string `dns:"cdomain-name"`
+}
+
+func (rr *MINFO) String() string {
+ return rr.Hdr.String() + sprintName(rr.Rmail) + " " + sprintName(rr.Email)
+}
+
+// MR RR. See RFC 1035.
+type MR struct {
+ Hdr RR_Header
+ Mr string `dns:"cdomain-name"`
+}
+
+func (rr *MR) String() string {
+ return rr.Hdr.String() + sprintName(rr.Mr)
+}
+
+// MF RR. See RFC 1035.
+type MF struct {
+ Hdr RR_Header
+ Mf string `dns:"cdomain-name"`
+}
+
+func (rr *MF) String() string {
+ return rr.Hdr.String() + sprintName(rr.Mf)
+}
+
+// MD RR. See RFC 1035.
+type MD struct {
+ Hdr RR_Header
+ Md string `dns:"cdomain-name"`
+}
+
+func (rr *MD) String() string {
+ return rr.Hdr.String() + sprintName(rr.Md)
+}
+
+// MX RR. See RFC 1035.
+type MX struct {
+ Hdr RR_Header
+ Preference uint16
+ Mx string `dns:"cdomain-name"`
+}
+
+func (rr *MX) String() string {
+ return rr.Hdr.String() + strconv.Itoa(int(rr.Preference)) + " " + sprintName(rr.Mx)
+}
+
+// AFSDB RR. See RFC 1183.
+type AFSDB struct {
+ Hdr RR_Header
+ Subtype uint16
+ Hostname string `dns:"domain-name"`
+}
+
+func (rr *AFSDB) String() string {
+ return rr.Hdr.String() + strconv.Itoa(int(rr.Subtype)) + " " + sprintName(rr.Hostname)
+}
+
+// X25 RR. See RFC 1183, Section 3.1.
+type X25 struct {
+ Hdr RR_Header
+ PSDNAddress string
+}
+
+func (rr *X25) String() string {
+ return rr.Hdr.String() + rr.PSDNAddress
+}
+
+// RT RR. See RFC 1183, Section 3.3.
+type RT struct {
+ Hdr RR_Header
+ Preference uint16
+ Host string `dns:"domain-name"` // RFC 3597 prohibits compressing records not defined in RFC 1035.
+}
+
+func (rr *RT) String() string {
+ return rr.Hdr.String() + strconv.Itoa(int(rr.Preference)) + " " + sprintName(rr.Host)
+}
+
+// NS RR. See RFC 1035.
+type NS struct {
+ Hdr RR_Header
+ Ns string `dns:"cdomain-name"`
+}
+
+func (rr *NS) String() string {
+ return rr.Hdr.String() + sprintName(rr.Ns)
+}
+
+// PTR RR. See RFC 1035.
+type PTR struct {
+ Hdr RR_Header
+ Ptr string `dns:"cdomain-name"`
+}
+
+func (rr *PTR) String() string {
+ return rr.Hdr.String() + sprintName(rr.Ptr)
+}
+
+// RP RR. See RFC 1138, Section 2.2.
+type RP struct {
+ Hdr RR_Header
+ Mbox string `dns:"domain-name"`
+ Txt string `dns:"domain-name"`
+}
+
+func (rr *RP) String() string {
+ return rr.Hdr.String() + sprintName(rr.Mbox) + " " + sprintName(rr.Txt)
+}
+
+// SOA RR. See RFC 1035.
+type SOA struct {
+ Hdr RR_Header
+ Ns string `dns:"cdomain-name"`
+ Mbox string `dns:"cdomain-name"`
+ Serial uint32
+ Refresh uint32
+ Retry uint32
+ Expire uint32
+ Minttl uint32
+}
+
+func (rr *SOA) String() string {
+ return rr.Hdr.String() + sprintName(rr.Ns) + " " + sprintName(rr.Mbox) +
+ " " + strconv.FormatInt(int64(rr.Serial), 10) +
+ " " + strconv.FormatInt(int64(rr.Refresh), 10) +
+ " " + strconv.FormatInt(int64(rr.Retry), 10) +
+ " " + strconv.FormatInt(int64(rr.Expire), 10) +
+ " " + strconv.FormatInt(int64(rr.Minttl), 10)
+}
+
+// TXT RR. See RFC 1035.
+type TXT struct {
+ Hdr RR_Header
+ Txt []string `dns:"txt"`
+}
+
+func (rr *TXT) String() string { return rr.Hdr.String() + sprintTxt(rr.Txt) }
+
+func sprintName(s string) string {
+ var dst strings.Builder
+
+ for i := 0; i < len(s); {
+ if i+1 < len(s) && s[i] == '\\' && s[i+1] == '.' {
+ if dst.Len() != 0 {
+ dst.WriteString(s[i : i+2])
+ }
+ i += 2
+ continue
+ }
+
+ b, n := nextByte(s, i)
+ if n == 0 {
+ i++
+ continue
+ }
+ if b == '.' {
+ if dst.Len() != 0 {
+ dst.WriteByte('.')
+ }
+ i += n
+ continue
+ }
+ switch b {
+ case ' ', '\'', '@', ';', '(', ')', '"', '\\': // additional chars to escape
+ if dst.Len() == 0 {
+ dst.Grow(len(s) * 2)
+ dst.WriteString(s[:i])
+ }
+ dst.WriteByte('\\')
+ dst.WriteByte(b)
+ default:
+ if ' ' <= b && b <= '~' {
+ if dst.Len() != 0 {
+ dst.WriteByte(b)
+ }
+ } else {
+ if dst.Len() == 0 {
+ dst.Grow(len(s) * 2)
+ dst.WriteString(s[:i])
+ }
+ dst.WriteString(escapeByte(b))
+ }
+ }
+ i += n
+ }
+ if dst.Len() == 0 {
+ return s
+ }
+ return dst.String()
+}
+
+func sprintTxtOctet(s string) string {
+ var dst strings.Builder
+ dst.Grow(2 + len(s))
+ dst.WriteByte('"')
+ for i := 0; i < len(s); {
+ if i+1 < len(s) && s[i] == '\\' && s[i+1] == '.' {
+ dst.WriteString(s[i : i+2])
+ i += 2
+ continue
+ }
+
+ b, n := nextByte(s, i)
+ switch {
+ case n == 0:
+ i++ // dangling back slash
+ case b == '.':
+ dst.WriteByte('.')
+ case b < ' ' || b > '~':
+ dst.WriteString(escapeByte(b))
+ default:
+ dst.WriteByte(b)
+ }
+ i += n
+ }
+ dst.WriteByte('"')
+ return dst.String()
+}
+
+func sprintTxt(txt []string) string {
+ var out strings.Builder
+ for i, s := range txt {
+ out.Grow(3 + len(s))
+ if i > 0 {
+ out.WriteString(` "`)
+ } else {
+ out.WriteByte('"')
+ }
+ for j := 0; j < len(s); {
+ b, n := nextByte(s, j)
+ if n == 0 {
+ break
+ }
+ writeTXTStringByte(&out, b)
+ j += n
+ }
+ out.WriteByte('"')
+ }
+ return out.String()
+}
+
+func writeTXTStringByte(s *strings.Builder, b byte) {
+ switch {
+ case b == '"' || b == '\\':
+ s.WriteByte('\\')
+ s.WriteByte(b)
+ case b < ' ' || b > '~':
+ s.WriteString(escapeByte(b))
+ default:
+ s.WriteByte(b)
+ }
+}
+
+const (
+ escapedByteSmall = "" +
+ `\000\001\002\003\004\005\006\007\008\009` +
+ `\010\011\012\013\014\015\016\017\018\019` +
+ `\020\021\022\023\024\025\026\027\028\029` +
+ `\030\031`
+ escapedByteLarge = `\127\128\129` +
+ `\130\131\132\133\134\135\136\137\138\139` +
+ `\140\141\142\143\144\145\146\147\148\149` +
+ `\150\151\152\153\154\155\156\157\158\159` +
+ `\160\161\162\163\164\165\166\167\168\169` +
+ `\170\171\172\173\174\175\176\177\178\179` +
+ `\180\181\182\183\184\185\186\187\188\189` +
+ `\190\191\192\193\194\195\196\197\198\199` +
+ `\200\201\202\203\204\205\206\207\208\209` +
+ `\210\211\212\213\214\215\216\217\218\219` +
+ `\220\221\222\223\224\225\226\227\228\229` +
+ `\230\231\232\233\234\235\236\237\238\239` +
+ `\240\241\242\243\244\245\246\247\248\249` +
+ `\250\251\252\253\254\255`
+)
+
+// escapeByte returns the \DDD escaping of b which must
+// satisfy b < ' ' || b > '~'.
+func escapeByte(b byte) string {
+ if b < ' ' {
+ return escapedByteSmall[b*4 : b*4+4]
+ }
+
+ b -= '~' + 1
+ // The cast here is needed as b*4 may overflow byte.
+ return escapedByteLarge[int(b)*4 : int(b)*4+4]
+}
+
+func nextByte(s string, offset int) (byte, int) {
+ if offset >= len(s) {
+ return 0, 0
+ }
+ if s[offset] != '\\' {
+ // not an escape sequence
+ return s[offset], 1
+ }
+ switch len(s) - offset {
+ case 1: // dangling escape
+ return 0, 0
+ case 2, 3: // too short to be \ddd
+ default: // maybe \ddd
+ if isDigit(s[offset+1]) && isDigit(s[offset+2]) && isDigit(s[offset+3]) {
+ return dddStringToByte(s[offset+1:]), 4
+ }
+ }
+ // not \ddd, just an RFC 1035 "quoted" character
+ return s[offset+1], 2
+}
+
+// SPF RR. See RFC 4408, Section 3.1.1.
+type SPF struct {
+ Hdr RR_Header
+ Txt []string `dns:"txt"`
+}
+
+func (rr *SPF) String() string { return rr.Hdr.String() + sprintTxt(rr.Txt) }
+
+// AVC RR. See https://www.iana.org/assignments/dns-parameters/AVC/avc-completed-template.
+type AVC struct {
+ Hdr RR_Header
+ Txt []string `dns:"txt"`
+}
+
+func (rr *AVC) String() string { return rr.Hdr.String() + sprintTxt(rr.Txt) }
+
+// SRV RR. See RFC 2782.
+type SRV struct {
+ Hdr RR_Header
+ Priority uint16
+ Weight uint16
+ Port uint16
+ Target string `dns:"domain-name"`
+}
+
+func (rr *SRV) String() string {
+ return rr.Hdr.String() +
+ strconv.Itoa(int(rr.Priority)) + " " +
+ strconv.Itoa(int(rr.Weight)) + " " +
+ strconv.Itoa(int(rr.Port)) + " " + sprintName(rr.Target)
+}
+
+// NAPTR RR. See RFC 2915.
+type NAPTR struct {
+ Hdr RR_Header
+ Order uint16
+ Preference uint16
+ Flags string
+ Service string
+ Regexp string
+ Replacement string `dns:"domain-name"`
+}
+
+func (rr *NAPTR) String() string {
+ return rr.Hdr.String() +
+ strconv.Itoa(int(rr.Order)) + " " +
+ strconv.Itoa(int(rr.Preference)) + " " +
+ "\"" + rr.Flags + "\" " +
+ "\"" + rr.Service + "\" " +
+ "\"" + rr.Regexp + "\" " +
+ rr.Replacement
+}
+
+// CERT RR. See RFC 4398.
+type CERT struct {
+ Hdr RR_Header
+ Type uint16
+ KeyTag uint16
+ Algorithm uint8
+ Certificate string `dns:"base64"`
+}
+
+func (rr *CERT) String() string {
+ var (
+ ok bool
+ certtype, algorithm string
+ )
+ if certtype, ok = CertTypeToString[rr.Type]; !ok {
+ certtype = strconv.Itoa(int(rr.Type))
+ }
+ if algorithm, ok = AlgorithmToString[rr.Algorithm]; !ok {
+ algorithm = strconv.Itoa(int(rr.Algorithm))
+ }
+ return rr.Hdr.String() + certtype +
+ " " + strconv.Itoa(int(rr.KeyTag)) +
+ " " + algorithm +
+ " " + rr.Certificate
+}
+
+// DNAME RR. See RFC 2672.
+type DNAME struct {
+ Hdr RR_Header
+ Target string `dns:"domain-name"`
+}
+
+func (rr *DNAME) String() string {
+ return rr.Hdr.String() + sprintName(rr.Target)
+}
+
+// A RR. See RFC 1035.
+type A struct {
+ Hdr RR_Header
+ A net.IP `dns:"a"`
+}
+
+func (rr *A) String() string {
+ if rr.A == nil {
+ return rr.Hdr.String()
+ }
+ return rr.Hdr.String() + rr.A.String()
+}
+
+// AAAA RR. See RFC 3596.
+type AAAA struct {
+ Hdr RR_Header
+ AAAA net.IP `dns:"aaaa"`
+}
+
+func (rr *AAAA) String() string {
+ if rr.AAAA == nil {
+ return rr.Hdr.String()
+ }
+ return rr.Hdr.String() + rr.AAAA.String()
+}
+
+// PX RR. See RFC 2163.
+type PX struct {
+ Hdr RR_Header
+ Preference uint16
+ Map822 string `dns:"domain-name"`
+ Mapx400 string `dns:"domain-name"`
+}
+
+func (rr *PX) String() string {
+ return rr.Hdr.String() + strconv.Itoa(int(rr.Preference)) + " " + sprintName(rr.Map822) + " " + sprintName(rr.Mapx400)
+}
+
+// GPOS RR. See RFC 1712.
+type GPOS struct {
+ Hdr RR_Header
+ Longitude string
+ Latitude string
+ Altitude string
+}
+
+func (rr *GPOS) String() string {
+ return rr.Hdr.String() + rr.Longitude + " " + rr.Latitude + " " + rr.Altitude
+}
+
+// LOC RR. See RFC RFC 1876.
+type LOC struct {
+ Hdr RR_Header
+ Version uint8
+ Size uint8
+ HorizPre uint8
+ VertPre uint8
+ Latitude uint32
+ Longitude uint32
+ Altitude uint32
+}
+
+// cmToM takes a cm value expressed in RFC1876 SIZE mantissa/exponent
+// format and returns a string in m (two decimals for the cm)
+func cmToM(m, e uint8) string {
+ if e < 2 {
+ if e == 1 {
+ m *= 10
+ }
+
+ return fmt.Sprintf("0.%02d", m)
+ }
+
+ s := fmt.Sprintf("%d", m)
+ for e > 2 {
+ s += "0"
+ e--
+ }
+ return s
+}
+
+func (rr *LOC) String() string {
+ s := rr.Hdr.String()
+
+ lat := rr.Latitude
+ ns := "N"
+ if lat > LOC_EQUATOR {
+ lat = lat - LOC_EQUATOR
+ } else {
+ ns = "S"
+ lat = LOC_EQUATOR - lat
+ }
+ h := lat / LOC_DEGREES
+ lat = lat % LOC_DEGREES
+ m := lat / LOC_HOURS
+ lat = lat % LOC_HOURS
+ s += fmt.Sprintf("%02d %02d %0.3f %s ", h, m, float64(lat)/1000, ns)
+
+ lon := rr.Longitude
+ ew := "E"
+ if lon > LOC_PRIMEMERIDIAN {
+ lon = lon - LOC_PRIMEMERIDIAN
+ } else {
+ ew = "W"
+ lon = LOC_PRIMEMERIDIAN - lon
+ }
+ h = lon / LOC_DEGREES
+ lon = lon % LOC_DEGREES
+ m = lon / LOC_HOURS
+ lon = lon % LOC_HOURS
+ s += fmt.Sprintf("%02d %02d %0.3f %s ", h, m, float64(lon)/1000, ew)
+
+ var alt = float64(rr.Altitude) / 100
+ alt -= LOC_ALTITUDEBASE
+ if rr.Altitude%100 != 0 {
+ s += fmt.Sprintf("%.2fm ", alt)
+ } else {
+ s += fmt.Sprintf("%.0fm ", alt)
+ }
+
+ s += cmToM(rr.Size&0xf0>>4, rr.Size&0x0f) + "m "
+ s += cmToM(rr.HorizPre&0xf0>>4, rr.HorizPre&0x0f) + "m "
+ s += cmToM(rr.VertPre&0xf0>>4, rr.VertPre&0x0f) + "m"
+
+ return s
+}
+
+// SIG RR. See RFC 2535. The SIG RR is identical to RRSIG and nowadays only used for SIG(0), See RFC 2931.
+type SIG struct {
+ RRSIG
+}
+
+// RRSIG RR. See RFC 4034 and RFC 3755.
+type RRSIG struct {
+ Hdr RR_Header
+ TypeCovered uint16
+ Algorithm uint8
+ Labels uint8
+ OrigTtl uint32
+ Expiration uint32
+ Inception uint32
+ KeyTag uint16
+ SignerName string `dns:"domain-name"`
+ Signature string `dns:"base64"`
+}
+
+func (rr *RRSIG) String() string {
+ s := rr.Hdr.String()
+ s += Type(rr.TypeCovered).String()
+ s += " " + strconv.Itoa(int(rr.Algorithm)) +
+ " " + strconv.Itoa(int(rr.Labels)) +
+ " " + strconv.FormatInt(int64(rr.OrigTtl), 10) +
+ " " + TimeToString(rr.Expiration) +
+ " " + TimeToString(rr.Inception) +
+ " " + strconv.Itoa(int(rr.KeyTag)) +
+ " " + sprintName(rr.SignerName) +
+ " " + rr.Signature
+ return s
+}
+
+// NSEC RR. See RFC 4034 and RFC 3755.
+type NSEC struct {
+ Hdr RR_Header
+ NextDomain string `dns:"domain-name"`
+ TypeBitMap []uint16 `dns:"nsec"`
+}
+
+func (rr *NSEC) String() string {
+ s := rr.Hdr.String() + sprintName(rr.NextDomain)
+ for _, t := range rr.TypeBitMap {
+ s += " " + Type(t).String()
+ }
+ return s
+}
+
+func (rr *NSEC) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.NextDomain, off+l, compression, false)
+ l += typeBitMapLen(rr.TypeBitMap)
+ return l
+}
+
+// DLV RR. See RFC 4431.
+type DLV struct{ DS }
+
+// CDS RR. See RFC 7344.
+type CDS struct{ DS }
+
+// DS RR. See RFC 4034 and RFC 3658.
+type DS struct {
+ Hdr RR_Header
+ KeyTag uint16
+ Algorithm uint8
+ DigestType uint8
+ Digest string `dns:"hex"`
+}
+
+func (rr *DS) String() string {
+ return rr.Hdr.String() + strconv.Itoa(int(rr.KeyTag)) +
+ " " + strconv.Itoa(int(rr.Algorithm)) +
+ " " + strconv.Itoa(int(rr.DigestType)) +
+ " " + strings.ToUpper(rr.Digest)
+}
+
+// KX RR. See RFC 2230.
+type KX struct {
+ Hdr RR_Header
+ Preference uint16
+ Exchanger string `dns:"domain-name"`
+}
+
+func (rr *KX) String() string {
+ return rr.Hdr.String() + strconv.Itoa(int(rr.Preference)) +
+ " " + sprintName(rr.Exchanger)
+}
+
+// TA RR. See http://www.watson.org/~weiler/INI1999-19.pdf.
+type TA struct {
+ Hdr RR_Header
+ KeyTag uint16
+ Algorithm uint8
+ DigestType uint8
+ Digest string `dns:"hex"`
+}
+
+func (rr *TA) String() string {
+ return rr.Hdr.String() + strconv.Itoa(int(rr.KeyTag)) +
+ " " + strconv.Itoa(int(rr.Algorithm)) +
+ " " + strconv.Itoa(int(rr.DigestType)) +
+ " " + strings.ToUpper(rr.Digest)
+}
+
+// TALINK RR. See https://www.iana.org/assignments/dns-parameters/TALINK/talink-completed-template.
+type TALINK struct {
+ Hdr RR_Header
+ PreviousName string `dns:"domain-name"`
+ NextName string `dns:"domain-name"`
+}
+
+func (rr *TALINK) String() string {
+ return rr.Hdr.String() +
+ sprintName(rr.PreviousName) + " " + sprintName(rr.NextName)
+}
+
+// SSHFP RR. See RFC RFC 4255.
+type SSHFP struct {
+ Hdr RR_Header
+ Algorithm uint8
+ Type uint8
+ FingerPrint string `dns:"hex"`
+}
+
+func (rr *SSHFP) String() string {
+ return rr.Hdr.String() + strconv.Itoa(int(rr.Algorithm)) +
+ " " + strconv.Itoa(int(rr.Type)) +
+ " " + strings.ToUpper(rr.FingerPrint)
+}
+
+// KEY RR. See RFC RFC 2535.
+type KEY struct {
+ DNSKEY
+}
+
+// CDNSKEY RR. See RFC 7344.
+type CDNSKEY struct {
+ DNSKEY
+}
+
+// DNSKEY RR. See RFC 4034 and RFC 3755.
+type DNSKEY struct {
+ Hdr RR_Header
+ Flags uint16
+ Protocol uint8
+ Algorithm uint8
+ PublicKey string `dns:"base64"`
+}
+
+func (rr *DNSKEY) String() string {
+ return rr.Hdr.String() + strconv.Itoa(int(rr.Flags)) +
+ " " + strconv.Itoa(int(rr.Protocol)) +
+ " " + strconv.Itoa(int(rr.Algorithm)) +
+ " " + rr.PublicKey
+}
+
+// RKEY RR. See https://www.iana.org/assignments/dns-parameters/RKEY/rkey-completed-template.
+type RKEY struct {
+ Hdr RR_Header
+ Flags uint16
+ Protocol uint8
+ Algorithm uint8
+ PublicKey string `dns:"base64"`
+}
+
+func (rr *RKEY) String() string {
+ return rr.Hdr.String() + strconv.Itoa(int(rr.Flags)) +
+ " " + strconv.Itoa(int(rr.Protocol)) +
+ " " + strconv.Itoa(int(rr.Algorithm)) +
+ " " + rr.PublicKey
+}
+
+// NSAPPTR RR. See RFC 1348.
+type NSAPPTR struct {
+ Hdr RR_Header
+ Ptr string `dns:"domain-name"`
+}
+
+func (rr *NSAPPTR) String() string { return rr.Hdr.String() + sprintName(rr.Ptr) }
+
+// NSEC3 RR. See RFC 5155.
+type NSEC3 struct {
+ Hdr RR_Header
+ Hash uint8
+ Flags uint8
+ Iterations uint16
+ SaltLength uint8
+ Salt string `dns:"size-hex:SaltLength"`
+ HashLength uint8
+ NextDomain string `dns:"size-base32:HashLength"`
+ TypeBitMap []uint16 `dns:"nsec"`
+}
+
+func (rr *NSEC3) String() string {
+ s := rr.Hdr.String()
+ s += strconv.Itoa(int(rr.Hash)) +
+ " " + strconv.Itoa(int(rr.Flags)) +
+ " " + strconv.Itoa(int(rr.Iterations)) +
+ " " + saltToString(rr.Salt) +
+ " " + rr.NextDomain
+ for _, t := range rr.TypeBitMap {
+ s += " " + Type(t).String()
+ }
+ return s
+}
+
+func (rr *NSEC3) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 6 + len(rr.Salt)/2 + 1 + len(rr.NextDomain) + 1
+ l += typeBitMapLen(rr.TypeBitMap)
+ return l
+}
+
+// NSEC3PARAM RR. See RFC 5155.
+type NSEC3PARAM struct {
+ Hdr RR_Header
+ Hash uint8
+ Flags uint8
+ Iterations uint16
+ SaltLength uint8
+ Salt string `dns:"size-hex:SaltLength"`
+}
+
+func (rr *NSEC3PARAM) String() string {
+ s := rr.Hdr.String()
+ s += strconv.Itoa(int(rr.Hash)) +
+ " " + strconv.Itoa(int(rr.Flags)) +
+ " " + strconv.Itoa(int(rr.Iterations)) +
+ " " + saltToString(rr.Salt)
+ return s
+}
+
+// TKEY RR. See RFC 2930.
+type TKEY struct {
+ Hdr RR_Header
+ Algorithm string `dns:"domain-name"`
+ Inception uint32
+ Expiration uint32
+ Mode uint16
+ Error uint16
+ KeySize uint16
+ Key string `dns:"size-hex:KeySize"`
+ OtherLen uint16
+ OtherData string `dns:"size-hex:OtherLen"`
+}
+
+// TKEY has no official presentation format, but this will suffice.
+func (rr *TKEY) String() string {
+ s := ";" + rr.Hdr.String() +
+ " " + rr.Algorithm +
+ " " + TimeToString(rr.Inception) +
+ " " + TimeToString(rr.Expiration) +
+ " " + strconv.Itoa(int(rr.Mode)) +
+ " " + strconv.Itoa(int(rr.Error)) +
+ " " + strconv.Itoa(int(rr.KeySize)) +
+ " " + rr.Key +
+ " " + strconv.Itoa(int(rr.OtherLen)) +
+ " " + rr.OtherData
+ return s
+}
+
+// RFC3597 represents an unknown/generic RR. See RFC 3597.
+type RFC3597 struct {
+ Hdr RR_Header
+ Rdata string `dns:"hex"`
+}
+
+func (rr *RFC3597) String() string {
+ // Let's call it a hack
+ s := rfc3597Header(rr.Hdr)
+
+ s += "\\# " + strconv.Itoa(len(rr.Rdata)/2) + " " + rr.Rdata
+ return s
+}
+
+func rfc3597Header(h RR_Header) string {
+ var s string
+
+ s += sprintName(h.Name) + "\t"
+ s += strconv.FormatInt(int64(h.Ttl), 10) + "\t"
+ s += "CLASS" + strconv.Itoa(int(h.Class)) + "\t"
+ s += "TYPE" + strconv.Itoa(int(h.Rrtype)) + "\t"
+ return s
+}
+
+// URI RR. See RFC 7553.
+type URI struct {
+ Hdr RR_Header
+ Priority uint16
+ Weight uint16
+ Target string `dns:"octet"`
+}
+
+func (rr *URI) String() string {
+ return rr.Hdr.String() + strconv.Itoa(int(rr.Priority)) +
+ " " + strconv.Itoa(int(rr.Weight)) + " " + sprintTxtOctet(rr.Target)
+}
+
+// DHCID RR. See RFC 4701.
+type DHCID struct {
+ Hdr RR_Header
+ Digest string `dns:"base64"`
+}
+
+func (rr *DHCID) String() string { return rr.Hdr.String() + rr.Digest }
+
+// TLSA RR. See RFC 6698.
+type TLSA struct {
+ Hdr RR_Header
+ Usage uint8
+ Selector uint8
+ MatchingType uint8
+ Certificate string `dns:"hex"`
+}
+
+func (rr *TLSA) String() string {
+ return rr.Hdr.String() +
+ strconv.Itoa(int(rr.Usage)) +
+ " " + strconv.Itoa(int(rr.Selector)) +
+ " " + strconv.Itoa(int(rr.MatchingType)) +
+ " " + rr.Certificate
+}
+
+// SMIMEA RR. See RFC 8162.
+type SMIMEA struct {
+ Hdr RR_Header
+ Usage uint8
+ Selector uint8
+ MatchingType uint8
+ Certificate string `dns:"hex"`
+}
+
+func (rr *SMIMEA) String() string {
+ s := rr.Hdr.String() +
+ strconv.Itoa(int(rr.Usage)) +
+ " " + strconv.Itoa(int(rr.Selector)) +
+ " " + strconv.Itoa(int(rr.MatchingType))
+
+ // Every Nth char needs a space on this output. If we output
+ // this as one giant line, we can't read it can in because in some cases
+ // the cert length overflows scan.maxTok (2048).
+ sx := splitN(rr.Certificate, 1024) // conservative value here
+ s += " " + strings.Join(sx, " ")
+ return s
+}
+
+// HIP RR. See RFC 8005.
+type HIP struct {
+ Hdr RR_Header
+ HitLength uint8
+ PublicKeyAlgorithm uint8
+ PublicKeyLength uint16
+ Hit string `dns:"size-hex:HitLength"`
+ PublicKey string `dns:"size-base64:PublicKeyLength"`
+ RendezvousServers []string `dns:"domain-name"`
+}
+
+func (rr *HIP) String() string {
+ s := rr.Hdr.String() +
+ strconv.Itoa(int(rr.PublicKeyAlgorithm)) +
+ " " + rr.Hit +
+ " " + rr.PublicKey
+ for _, d := range rr.RendezvousServers {
+ s += " " + sprintName(d)
+ }
+ return s
+}
+
+// NINFO RR. See https://www.iana.org/assignments/dns-parameters/NINFO/ninfo-completed-template.
+type NINFO struct {
+ Hdr RR_Header
+ ZSData []string `dns:"txt"`
+}
+
+func (rr *NINFO) String() string { return rr.Hdr.String() + sprintTxt(rr.ZSData) }
+
+// NID RR. See RFC RFC 6742.
+type NID struct {
+ Hdr RR_Header
+ Preference uint16
+ NodeID uint64
+}
+
+func (rr *NID) String() string {
+ s := rr.Hdr.String() + strconv.Itoa(int(rr.Preference))
+ node := fmt.Sprintf("%0.16x", rr.NodeID)
+ s += " " + node[0:4] + ":" + node[4:8] + ":" + node[8:12] + ":" + node[12:16]
+ return s
+}
+
+// L32 RR, See RFC 6742.
+type L32 struct {
+ Hdr RR_Header
+ Preference uint16
+ Locator32 net.IP `dns:"a"`
+}
+
+func (rr *L32) String() string {
+ if rr.Locator32 == nil {
+ return rr.Hdr.String() + strconv.Itoa(int(rr.Preference))
+ }
+ return rr.Hdr.String() + strconv.Itoa(int(rr.Preference)) +
+ " " + rr.Locator32.String()
+}
+
+// L64 RR, See RFC 6742.
+type L64 struct {
+ Hdr RR_Header
+ Preference uint16
+ Locator64 uint64
+}
+
+func (rr *L64) String() string {
+ s := rr.Hdr.String() + strconv.Itoa(int(rr.Preference))
+ node := fmt.Sprintf("%0.16X", rr.Locator64)
+ s += " " + node[0:4] + ":" + node[4:8] + ":" + node[8:12] + ":" + node[12:16]
+ return s
+}
+
+// LP RR. See RFC 6742.
+type LP struct {
+ Hdr RR_Header
+ Preference uint16
+ Fqdn string `dns:"domain-name"`
+}
+
+func (rr *LP) String() string {
+ return rr.Hdr.String() + strconv.Itoa(int(rr.Preference)) + " " + sprintName(rr.Fqdn)
+}
+
+// EUI48 RR. See RFC 7043.
+type EUI48 struct {
+ Hdr RR_Header
+ Address uint64 `dns:"uint48"`
+}
+
+func (rr *EUI48) String() string { return rr.Hdr.String() + euiToString(rr.Address, 48) }
+
+// EUI64 RR. See RFC 7043.
+type EUI64 struct {
+ Hdr RR_Header
+ Address uint64
+}
+
+func (rr *EUI64) String() string { return rr.Hdr.String() + euiToString(rr.Address, 64) }
+
+// CAA RR. See RFC 6844.
+type CAA struct {
+ Hdr RR_Header
+ Flag uint8
+ Tag string
+ Value string `dns:"octet"`
+}
+
+func (rr *CAA) String() string {
+ return rr.Hdr.String() + strconv.Itoa(int(rr.Flag)) + " " + rr.Tag + " " + sprintTxtOctet(rr.Value)
+}
+
+// UID RR. Deprecated, IANA-Reserved.
+type UID struct {
+ Hdr RR_Header
+ Uid uint32
+}
+
+func (rr *UID) String() string { return rr.Hdr.String() + strconv.FormatInt(int64(rr.Uid), 10) }
+
+// GID RR. Deprecated, IANA-Reserved.
+type GID struct {
+ Hdr RR_Header
+ Gid uint32
+}
+
+func (rr *GID) String() string { return rr.Hdr.String() + strconv.FormatInt(int64(rr.Gid), 10) }
+
+// UINFO RR. Deprecated, IANA-Reserved.
+type UINFO struct {
+ Hdr RR_Header
+ Uinfo string
+}
+
+func (rr *UINFO) String() string { return rr.Hdr.String() + sprintTxt([]string{rr.Uinfo}) }
+
+// EID RR. See http://ana-3.lcs.mit.edu/~jnc/nimrod/dns.txt.
+type EID struct {
+ Hdr RR_Header
+ Endpoint string `dns:"hex"`
+}
+
+func (rr *EID) String() string { return rr.Hdr.String() + strings.ToUpper(rr.Endpoint) }
+
+// NIMLOC RR. See http://ana-3.lcs.mit.edu/~jnc/nimrod/dns.txt.
+type NIMLOC struct {
+ Hdr RR_Header
+ Locator string `dns:"hex"`
+}
+
+func (rr *NIMLOC) String() string { return rr.Hdr.String() + strings.ToUpper(rr.Locator) }
+
+// OPENPGPKEY RR. See RFC 7929.
+type OPENPGPKEY struct {
+ Hdr RR_Header
+ PublicKey string `dns:"base64"`
+}
+
+func (rr *OPENPGPKEY) String() string { return rr.Hdr.String() + rr.PublicKey }
+
+// CSYNC RR. See RFC 7477.
+type CSYNC struct {
+ Hdr RR_Header
+ Serial uint32
+ Flags uint16
+ TypeBitMap []uint16 `dns:"nsec"`
+}
+
+func (rr *CSYNC) String() string {
+ s := rr.Hdr.String() + strconv.FormatInt(int64(rr.Serial), 10) + " " + strconv.Itoa(int(rr.Flags))
+
+ for _, t := range rr.TypeBitMap {
+ s += " " + Type(t).String()
+ }
+ return s
+}
+
+func (rr *CSYNC) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 4 + 2
+ l += typeBitMapLen(rr.TypeBitMap)
+ return l
+}
+
+// APL RR. See RFC 3123.
+type APL struct {
+ Hdr RR_Header
+ Prefixes []APLPrefix `dns:"apl"`
+}
+
+// APLPrefix is an address prefix hold by an APL record.
+type APLPrefix struct {
+ Negation bool
+ Network net.IPNet
+}
+
+// String returns presentation form of the APL record.
+func (rr *APL) String() string {
+ var sb strings.Builder
+ sb.WriteString(rr.Hdr.String())
+ for i, p := range rr.Prefixes {
+ if i > 0 {
+ sb.WriteByte(' ')
+ }
+ sb.WriteString(p.str())
+ }
+ return sb.String()
+}
+
+// str returns presentation form of the APL prefix.
+func (p *APLPrefix) str() string {
+ var sb strings.Builder
+ if p.Negation {
+ sb.WriteByte('!')
+ }
+
+ switch len(p.Network.IP) {
+ case net.IPv4len:
+ sb.WriteByte('1')
+ case net.IPv6len:
+ sb.WriteByte('2')
+ }
+
+ sb.WriteByte(':')
+
+ switch len(p.Network.IP) {
+ case net.IPv4len:
+ sb.WriteString(p.Network.IP.String())
+ case net.IPv6len:
+ // add prefix for IPv4-mapped IPv6
+ if v4 := p.Network.IP.To4(); v4 != nil {
+ sb.WriteString("::ffff:")
+ }
+ sb.WriteString(p.Network.IP.String())
+ }
+
+ sb.WriteByte('/')
+
+ prefix, _ := p.Network.Mask.Size()
+ sb.WriteString(strconv.Itoa(prefix))
+
+ return sb.String()
+}
+
+// equals reports whether two APL prefixes are identical.
+func (a *APLPrefix) equals(b *APLPrefix) bool {
+ return a.Negation == b.Negation &&
+ bytes.Equal(a.Network.IP, b.Network.IP) &&
+ bytes.Equal(a.Network.Mask, b.Network.Mask)
+}
+
+// copy returns a copy of the APL prefix.
+func (p *APLPrefix) copy() APLPrefix {
+ return APLPrefix{
+ Negation: p.Negation,
+ Network: copyNet(p.Network),
+ }
+}
+
+// len returns size of the prefix in wire format.
+func (p *APLPrefix) len() int {
+ // 4-byte header and the network address prefix (see Section 4 of RFC 3123)
+ prefix, _ := p.Network.Mask.Size()
+ return 4 + (prefix+7)/8
+}
+
+// TimeToString translates the RRSIG's incep. and expir. times to the
+// string representation used when printing the record.
+// It takes serial arithmetic (RFC 1982) into account.
+func TimeToString(t uint32) string {
+ mod := (int64(t)-time.Now().Unix())/year68 - 1
+ if mod < 0 {
+ mod = 0
+ }
+ ti := time.Unix(int64(t)-mod*year68, 0).UTC()
+ return ti.Format("20060102150405")
+}
+
+// StringToTime translates the RRSIG's incep. and expir. times from
+// string values like "20110403154150" to an 32 bit integer.
+// It takes serial arithmetic (RFC 1982) into account.
+func StringToTime(s string) (uint32, error) {
+ t, err := time.Parse("20060102150405", s)
+ if err != nil {
+ return 0, err
+ }
+ mod := t.Unix()/year68 - 1
+ if mod < 0 {
+ mod = 0
+ }
+ return uint32(t.Unix() - mod*year68), nil
+}
+
+// saltToString converts a NSECX salt to uppercase and returns "-" when it is empty.
+func saltToString(s string) string {
+ if len(s) == 0 {
+ return "-"
+ }
+ return strings.ToUpper(s)
+}
+
+func euiToString(eui uint64, bits int) (hex string) {
+ switch bits {
+ case 64:
+ hex = fmt.Sprintf("%16.16x", eui)
+ hex = hex[0:2] + "-" + hex[2:4] + "-" + hex[4:6] + "-" + hex[6:8] +
+ "-" + hex[8:10] + "-" + hex[10:12] + "-" + hex[12:14] + "-" + hex[14:16]
+ case 48:
+ hex = fmt.Sprintf("%12.12x", eui)
+ hex = hex[0:2] + "-" + hex[2:4] + "-" + hex[4:6] + "-" + hex[6:8] +
+ "-" + hex[8:10] + "-" + hex[10:12]
+ }
+ return
+}
+
+// copyIP returns a copy of ip.
+func copyIP(ip net.IP) net.IP {
+ p := make(net.IP, len(ip))
+ copy(p, ip)
+ return p
+}
+
+// copyNet returns a copy of a subnet.
+func copyNet(n net.IPNet) net.IPNet {
+ m := make(net.IPMask, len(n.Mask))
+ copy(m, n.Mask)
+
+ return net.IPNet{
+ IP: copyIP(n.IP),
+ Mask: m,
+ }
+}
+
+// SplitN splits a string into N sized string chunks.
+// This might become an exported function once.
+func splitN(s string, n int) []string {
+ if len(s) < n {
+ return []string{s}
+ }
+ sx := []string{}
+ p, i := 0, n
+ for {
+ if i <= len(s) {
+ sx = append(sx, s[p:i])
+ } else {
+ sx = append(sx, s[p:])
+ break
+
+ }
+ p, i = p+n, i+n
+ }
+
+ return sx
+}
diff --git a/vendor/github.com/miekg/dns/udp.go b/vendor/github.com/miekg/dns/udp.go
new file mode 100644
index 0000000..a4826ee
--- /dev/null
+++ b/vendor/github.com/miekg/dns/udp.go
@@ -0,0 +1,102 @@
+// +build !windows
+
+package dns
+
+import (
+ "net"
+
+ "golang.org/x/net/ipv4"
+ "golang.org/x/net/ipv6"
+)
+
+// This is the required size of the OOB buffer to pass to ReadMsgUDP.
+var udpOOBSize = func() int {
+ // We can't know whether we'll get an IPv4 control message or an
+ // IPv6 control message ahead of time. To get around this, we size
+ // the buffer equal to the largest of the two.
+
+ oob4 := ipv4.NewControlMessage(ipv4.FlagDst | ipv4.FlagInterface)
+ oob6 := ipv6.NewControlMessage(ipv6.FlagDst | ipv6.FlagInterface)
+
+ if len(oob4) > len(oob6) {
+ return len(oob4)
+ }
+
+ return len(oob6)
+}()
+
+// SessionUDP holds the remote address and the associated
+// out-of-band data.
+type SessionUDP struct {
+ raddr *net.UDPAddr
+ context []byte
+}
+
+// RemoteAddr returns the remote network address.
+func (s *SessionUDP) RemoteAddr() net.Addr { return s.raddr }
+
+// ReadFromSessionUDP acts just like net.UDPConn.ReadFrom(), but returns a session object instead of a
+// net.UDPAddr.
+func ReadFromSessionUDP(conn *net.UDPConn, b []byte) (int, *SessionUDP, error) {
+ oob := make([]byte, udpOOBSize)
+ n, oobn, _, raddr, err := conn.ReadMsgUDP(b, oob)
+ if err != nil {
+ return n, nil, err
+ }
+ return n, &SessionUDP{raddr, oob[:oobn]}, err
+}
+
+// WriteToSessionUDP acts just like net.UDPConn.WriteTo(), but uses a *SessionUDP instead of a net.Addr.
+func WriteToSessionUDP(conn *net.UDPConn, b []byte, session *SessionUDP) (int, error) {
+ oob := correctSource(session.context)
+ n, _, err := conn.WriteMsgUDP(b, oob, session.raddr)
+ return n, err
+}
+
+func setUDPSocketOptions(conn *net.UDPConn) error {
+ // Try setting the flags for both families and ignore the errors unless they
+ // both error.
+ err6 := ipv6.NewPacketConn(conn).SetControlMessage(ipv6.FlagDst|ipv6.FlagInterface, true)
+ err4 := ipv4.NewPacketConn(conn).SetControlMessage(ipv4.FlagDst|ipv4.FlagInterface, true)
+ if err6 != nil && err4 != nil {
+ return err4
+ }
+ return nil
+}
+
+// parseDstFromOOB takes oob data and returns the destination IP.
+func parseDstFromOOB(oob []byte) net.IP {
+ // Start with IPv6 and then fallback to IPv4
+ // TODO(fastest963): Figure out a way to prefer one or the other. Looking at
+ // the lvl of the header for a 0 or 41 isn't cross-platform.
+ cm6 := new(ipv6.ControlMessage)
+ if cm6.Parse(oob) == nil && cm6.Dst != nil {
+ return cm6.Dst
+ }
+ cm4 := new(ipv4.ControlMessage)
+ if cm4.Parse(oob) == nil && cm4.Dst != nil {
+ return cm4.Dst
+ }
+ return nil
+}
+
+// correctSource takes oob data and returns new oob data with the Src equal to the Dst
+func correctSource(oob []byte) []byte {
+ dst := parseDstFromOOB(oob)
+ if dst == nil {
+ return nil
+ }
+ // If the dst is definitely an IPv6, then use ipv6's ControlMessage to
+ // respond otherwise use ipv4's because ipv6's marshal ignores ipv4
+ // addresses.
+ if dst.To4() == nil {
+ cm := new(ipv6.ControlMessage)
+ cm.Src = dst
+ oob = cm.Marshal()
+ } else {
+ cm := new(ipv4.ControlMessage)
+ cm.Src = dst
+ oob = cm.Marshal()
+ }
+ return oob
+}
diff --git a/vendor/github.com/miekg/dns/udp_windows.go b/vendor/github.com/miekg/dns/udp_windows.go
new file mode 100644
index 0000000..e7dd8ca
--- /dev/null
+++ b/vendor/github.com/miekg/dns/udp_windows.go
@@ -0,0 +1,35 @@
+// +build windows
+
+package dns
+
+import "net"
+
+// SessionUDP holds the remote address
+type SessionUDP struct {
+ raddr *net.UDPAddr
+}
+
+// RemoteAddr returns the remote network address.
+func (s *SessionUDP) RemoteAddr() net.Addr { return s.raddr }
+
+// ReadFromSessionUDP acts just like net.UDPConn.ReadFrom(), but returns a session object instead of a
+// net.UDPAddr.
+// TODO(fastest963): Once go1.10 is released, use ReadMsgUDP.
+func ReadFromSessionUDP(conn *net.UDPConn, b []byte) (int, *SessionUDP, error) {
+ n, raddr, err := conn.ReadFrom(b)
+ if err != nil {
+ return n, nil, err
+ }
+ return n, &SessionUDP{raddr.(*net.UDPAddr)}, err
+}
+
+// WriteToSessionUDP acts just like net.UDPConn.WriteTo(), but uses a *SessionUDP instead of a net.Addr.
+// TODO(fastest963): Once go1.10 is released, use WriteMsgUDP.
+func WriteToSessionUDP(conn *net.UDPConn, b []byte, session *SessionUDP) (int, error) {
+ return conn.WriteTo(b, session.raddr)
+}
+
+// TODO(fastest963): Once go1.10 is released and we can use *MsgUDP methods
+// use the standard method in udp.go for these.
+func setUDPSocketOptions(*net.UDPConn) error { return nil }
+func parseDstFromOOB([]byte, net.IP) net.IP { return nil }
diff --git a/vendor/github.com/miekg/dns/update.go b/vendor/github.com/miekg/dns/update.go
new file mode 100644
index 0000000..69dd386
--- /dev/null
+++ b/vendor/github.com/miekg/dns/update.go
@@ -0,0 +1,110 @@
+package dns
+
+// NameUsed sets the RRs in the prereq section to
+// "Name is in use" RRs. RFC 2136 section 2.4.4.
+func (u *Msg) NameUsed(rr []RR) {
+ if u.Answer == nil {
+ u.Answer = make([]RR, 0, len(rr))
+ }
+ for _, r := range rr {
+ u.Answer = append(u.Answer, &ANY{Hdr: RR_Header{Name: r.Header().Name, Ttl: 0, Rrtype: TypeANY, Class: ClassANY}})
+ }
+}
+
+// NameNotUsed sets the RRs in the prereq section to
+// "Name is in not use" RRs. RFC 2136 section 2.4.5.
+func (u *Msg) NameNotUsed(rr []RR) {
+ if u.Answer == nil {
+ u.Answer = make([]RR, 0, len(rr))
+ }
+ for _, r := range rr {
+ u.Answer = append(u.Answer, &ANY{Hdr: RR_Header{Name: r.Header().Name, Ttl: 0, Rrtype: TypeANY, Class: ClassNONE}})
+ }
+}
+
+// Used sets the RRs in the prereq section to
+// "RRset exists (value dependent -- with rdata)" RRs. RFC 2136 section 2.4.2.
+func (u *Msg) Used(rr []RR) {
+ if len(u.Question) == 0 {
+ panic("dns: empty question section")
+ }
+ if u.Answer == nil {
+ u.Answer = make([]RR, 0, len(rr))
+ }
+ for _, r := range rr {
+ r.Header().Class = u.Question[0].Qclass
+ u.Answer = append(u.Answer, r)
+ }
+}
+
+// RRsetUsed sets the RRs in the prereq section to
+// "RRset exists (value independent -- no rdata)" RRs. RFC 2136 section 2.4.1.
+func (u *Msg) RRsetUsed(rr []RR) {
+ if u.Answer == nil {
+ u.Answer = make([]RR, 0, len(rr))
+ }
+ for _, r := range rr {
+ h := r.Header()
+ u.Answer = append(u.Answer, &ANY{Hdr: RR_Header{Name: h.Name, Ttl: 0, Rrtype: h.Rrtype, Class: ClassANY}})
+ }
+}
+
+// RRsetNotUsed sets the RRs in the prereq section to
+// "RRset does not exist" RRs. RFC 2136 section 2.4.3.
+func (u *Msg) RRsetNotUsed(rr []RR) {
+ if u.Answer == nil {
+ u.Answer = make([]RR, 0, len(rr))
+ }
+ for _, r := range rr {
+ h := r.Header()
+ u.Answer = append(u.Answer, &ANY{Hdr: RR_Header{Name: h.Name, Ttl: 0, Rrtype: h.Rrtype, Class: ClassNONE}})
+ }
+}
+
+// Insert creates a dynamic update packet that adds an complete RRset, see RFC 2136 section 2.5.1.
+func (u *Msg) Insert(rr []RR) {
+ if len(u.Question) == 0 {
+ panic("dns: empty question section")
+ }
+ if u.Ns == nil {
+ u.Ns = make([]RR, 0, len(rr))
+ }
+ for _, r := range rr {
+ r.Header().Class = u.Question[0].Qclass
+ u.Ns = append(u.Ns, r)
+ }
+}
+
+// RemoveRRset creates a dynamic update packet that deletes an RRset, see RFC 2136 section 2.5.2.
+func (u *Msg) RemoveRRset(rr []RR) {
+ if u.Ns == nil {
+ u.Ns = make([]RR, 0, len(rr))
+ }
+ for _, r := range rr {
+ h := r.Header()
+ u.Ns = append(u.Ns, &ANY{Hdr: RR_Header{Name: h.Name, Ttl: 0, Rrtype: h.Rrtype, Class: ClassANY}})
+ }
+}
+
+// RemoveName creates a dynamic update packet that deletes all RRsets of a name, see RFC 2136 section 2.5.3
+func (u *Msg) RemoveName(rr []RR) {
+ if u.Ns == nil {
+ u.Ns = make([]RR, 0, len(rr))
+ }
+ for _, r := range rr {
+ u.Ns = append(u.Ns, &ANY{Hdr: RR_Header{Name: r.Header().Name, Ttl: 0, Rrtype: TypeANY, Class: ClassANY}})
+ }
+}
+
+// Remove creates a dynamic update packet deletes RR from a RRSset, see RFC 2136 section 2.5.4
+func (u *Msg) Remove(rr []RR) {
+ if u.Ns == nil {
+ u.Ns = make([]RR, 0, len(rr))
+ }
+ for _, r := range rr {
+ h := r.Header()
+ h.Class = ClassNONE
+ h.Ttl = 0
+ u.Ns = append(u.Ns, r)
+ }
+}
diff --git a/vendor/github.com/miekg/dns/version.go b/vendor/github.com/miekg/dns/version.go
new file mode 100644
index 0000000..cab46b4
--- /dev/null
+++ b/vendor/github.com/miekg/dns/version.go
@@ -0,0 +1,15 @@
+package dns
+
+import "fmt"
+
+// Version is current version of this library.
+var Version = V{1, 1, 27}
+
+// V holds the version of this library.
+type V struct {
+ Major, Minor, Patch int
+}
+
+func (v V) String() string {
+ return fmt.Sprintf("%d.%d.%d", v.Major, v.Minor, v.Patch)
+}
diff --git a/vendor/github.com/miekg/dns/xfr.go b/vendor/github.com/miekg/dns/xfr.go
new file mode 100644
index 0000000..43970e6
--- /dev/null
+++ b/vendor/github.com/miekg/dns/xfr.go
@@ -0,0 +1,266 @@
+package dns
+
+import (
+ "fmt"
+ "time"
+)
+
+// Envelope is used when doing a zone transfer with a remote server.
+type Envelope struct {
+ RR []RR // The set of RRs in the answer section of the xfr reply message.
+ Error error // If something went wrong, this contains the error.
+}
+
+// A Transfer defines parameters that are used during a zone transfer.
+type Transfer struct {
+ *Conn
+ DialTimeout time.Duration // net.DialTimeout, defaults to 2 seconds
+ ReadTimeout time.Duration // net.Conn.SetReadTimeout value for connections, defaults to 2 seconds
+ WriteTimeout time.Duration // net.Conn.SetWriteTimeout value for connections, defaults to 2 seconds
+ TsigSecret map[string]string // Secret(s) for Tsig map[], zonename must be in canonical form (lowercase, fqdn, see RFC 4034 Section 6.2)
+ tsigTimersOnly bool
+}
+
+// Think we need to away to stop the transfer
+
+// In performs an incoming transfer with the server in a.
+// If you would like to set the source IP, or some other attribute
+// of a Dialer for a Transfer, you can do so by specifying the attributes
+// in the Transfer.Conn:
+//
+// d := net.Dialer{LocalAddr: transfer_source}
+// con, err := d.Dial("tcp", master)
+// dnscon := &dns.Conn{Conn:con}
+// transfer = &dns.Transfer{Conn: dnscon}
+// channel, err := transfer.In(message, master)
+//
+func (t *Transfer) In(q *Msg, a string) (env chan *Envelope, err error) {
+ switch q.Question[0].Qtype {
+ case TypeAXFR, TypeIXFR:
+ default:
+ return nil, &Error{"unsupported question type"}
+ }
+
+ timeout := dnsTimeout
+ if t.DialTimeout != 0 {
+ timeout = t.DialTimeout
+ }
+
+ if t.Conn == nil {
+ t.Conn, err = DialTimeout("tcp", a, timeout)
+ if err != nil {
+ return nil, err
+ }
+ }
+
+ if err := t.WriteMsg(q); err != nil {
+ return nil, err
+ }
+
+ env = make(chan *Envelope)
+ switch q.Question[0].Qtype {
+ case TypeAXFR:
+ go t.inAxfr(q, env)
+ case TypeIXFR:
+ go t.inIxfr(q, env)
+ }
+
+ return env, nil
+}
+
+func (t *Transfer) inAxfr(q *Msg, c chan *Envelope) {
+ first := true
+ defer t.Close()
+ defer close(c)
+ timeout := dnsTimeout
+ if t.ReadTimeout != 0 {
+ timeout = t.ReadTimeout
+ }
+ for {
+ t.Conn.SetReadDeadline(time.Now().Add(timeout))
+ in, err := t.ReadMsg()
+ if err != nil {
+ c <- &Envelope{nil, err}
+ return
+ }
+ if q.Id != in.Id {
+ c <- &Envelope{in.Answer, ErrId}
+ return
+ }
+ if first {
+ if in.Rcode != RcodeSuccess {
+ c <- &Envelope{in.Answer, &Error{err: fmt.Sprintf(errXFR, in.Rcode)}}
+ return
+ }
+ if !isSOAFirst(in) {
+ c <- &Envelope{in.Answer, ErrSoa}
+ return
+ }
+ first = !first
+ // only one answer that is SOA, receive more
+ if len(in.Answer) == 1 {
+ t.tsigTimersOnly = true
+ c <- &Envelope{in.Answer, nil}
+ continue
+ }
+ }
+
+ if !first {
+ t.tsigTimersOnly = true // Subsequent envelopes use this.
+ if isSOALast(in) {
+ c <- &Envelope{in.Answer, nil}
+ return
+ }
+ c <- &Envelope{in.Answer, nil}
+ }
+ }
+}
+
+func (t *Transfer) inIxfr(q *Msg, c chan *Envelope) {
+ var serial uint32 // The first serial seen is the current server serial
+ axfr := true
+ n := 0
+ qser := q.Ns[0].(*SOA).Serial
+ defer t.Close()
+ defer close(c)
+ timeout := dnsTimeout
+ if t.ReadTimeout != 0 {
+ timeout = t.ReadTimeout
+ }
+ for {
+ t.SetReadDeadline(time.Now().Add(timeout))
+ in, err := t.ReadMsg()
+ if err != nil {
+ c <- &Envelope{nil, err}
+ return
+ }
+ if q.Id != in.Id {
+ c <- &Envelope{in.Answer, ErrId}
+ return
+ }
+ if in.Rcode != RcodeSuccess {
+ c <- &Envelope{in.Answer, &Error{err: fmt.Sprintf(errXFR, in.Rcode)}}
+ return
+ }
+ if n == 0 {
+ // Check if the returned answer is ok
+ if !isSOAFirst(in) {
+ c <- &Envelope{in.Answer, ErrSoa}
+ return
+ }
+ // This serial is important
+ serial = in.Answer[0].(*SOA).Serial
+ // Check if there are no changes in zone
+ if qser >= serial {
+ c <- &Envelope{in.Answer, nil}
+ return
+ }
+ }
+ // Now we need to check each message for SOA records, to see what we need to do
+ t.tsigTimersOnly = true
+ for _, rr := range in.Answer {
+ if v, ok := rr.(*SOA); ok {
+ if v.Serial == serial {
+ n++
+ // quit if it's a full axfr or the the servers' SOA is repeated the third time
+ if axfr && n == 2 || n == 3 {
+ c <- &Envelope{in.Answer, nil}
+ return
+ }
+ } else if axfr {
+ // it's an ixfr
+ axfr = false
+ }
+ }
+ }
+ c <- &Envelope{in.Answer, nil}
+ }
+}
+
+// Out performs an outgoing transfer with the client connecting in w.
+// Basic use pattern:
+//
+// ch := make(chan *dns.Envelope)
+// tr := new(dns.Transfer)
+// var wg sync.WaitGroup
+// go func() {
+// tr.Out(w, r, ch)
+// wg.Done()
+// }()
+// ch <- &dns.Envelope{RR: []dns.RR{soa, rr1, rr2, rr3, soa}}
+// close(ch)
+// wg.Wait() // wait until everything is written out
+// w.Close() // close connection
+//
+// The server is responsible for sending the correct sequence of RRs through the channel ch.
+func (t *Transfer) Out(w ResponseWriter, q *Msg, ch chan *Envelope) error {
+ for x := range ch {
+ r := new(Msg)
+ // Compress?
+ r.SetReply(q)
+ r.Authoritative = true
+ // assume it fits TODO(miek): fix
+ r.Answer = append(r.Answer, x.RR...)
+ if tsig := q.IsTsig(); tsig != nil && w.TsigStatus() == nil {
+ r.SetTsig(tsig.Hdr.Name, tsig.Algorithm, tsig.Fudge, time.Now().Unix())
+ }
+ if err := w.WriteMsg(r); err != nil {
+ return err
+ }
+ w.TsigTimersOnly(true)
+ }
+ return nil
+}
+
+// ReadMsg reads a message from the transfer connection t.
+func (t *Transfer) ReadMsg() (*Msg, error) {
+ m := new(Msg)
+ p := make([]byte, MaxMsgSize)
+ n, err := t.Read(p)
+ if err != nil && n == 0 {
+ return nil, err
+ }
+ p = p[:n]
+ if err := m.Unpack(p); err != nil {
+ return nil, err
+ }
+ if ts := m.IsTsig(); ts != nil && t.TsigSecret != nil {
+ if _, ok := t.TsigSecret[ts.Hdr.Name]; !ok {
+ return m, ErrSecret
+ }
+ // Need to work on the original message p, as that was used to calculate the tsig.
+ err = TsigVerify(p, t.TsigSecret[ts.Hdr.Name], t.tsigRequestMAC, t.tsigTimersOnly)
+ t.tsigRequestMAC = ts.MAC
+ }
+ return m, err
+}
+
+// WriteMsg writes a message through the transfer connection t.
+func (t *Transfer) WriteMsg(m *Msg) (err error) {
+ var out []byte
+ if ts := m.IsTsig(); ts != nil && t.TsigSecret != nil {
+ if _, ok := t.TsigSecret[ts.Hdr.Name]; !ok {
+ return ErrSecret
+ }
+ out, t.tsigRequestMAC, err = TsigGenerate(m, t.TsigSecret[ts.Hdr.Name], t.tsigRequestMAC, t.tsigTimersOnly)
+ } else {
+ out, err = m.Pack()
+ }
+ if err != nil {
+ return err
+ }
+ _, err = t.Write(out)
+ return err
+}
+
+func isSOAFirst(in *Msg) bool {
+ return len(in.Answer) > 0 &&
+ in.Answer[0].Header().Rrtype == TypeSOA
+}
+
+func isSOALast(in *Msg) bool {
+ return len(in.Answer) > 0 &&
+ in.Answer[len(in.Answer)-1].Header().Rrtype == TypeSOA
+}
+
+const errXFR = "bad xfr rcode: %d"
diff --git a/vendor/github.com/miekg/dns/zduplicate.go b/vendor/github.com/miekg/dns/zduplicate.go
new file mode 100644
index 0000000..a58a8c0
--- /dev/null
+++ b/vendor/github.com/miekg/dns/zduplicate.go
@@ -0,0 +1,1157 @@
+// Code generated by "go run duplicate_generate.go"; DO NOT EDIT.
+
+package dns
+
+// isDuplicate() functions
+
+func (r1 *A) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*A)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !r1.A.Equal(r2.A) {
+ return false
+ }
+ return true
+}
+
+func (r1 *AAAA) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*AAAA)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !r1.AAAA.Equal(r2.AAAA) {
+ return false
+ }
+ return true
+}
+
+func (r1 *AFSDB) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*AFSDB)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Subtype != r2.Subtype {
+ return false
+ }
+ if !isDuplicateName(r1.Hostname, r2.Hostname) {
+ return false
+ }
+ return true
+}
+
+func (r1 *ANY) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*ANY)
+ if !ok {
+ return false
+ }
+ _ = r2
+ return true
+}
+
+func (r1 *APL) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*APL)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if len(r1.Prefixes) != len(r2.Prefixes) {
+ return false
+ }
+ for i := 0; i < len(r1.Prefixes); i++ {
+ if !r1.Prefixes[i].equals(&r2.Prefixes[i]) {
+ return false
+ }
+ }
+ return true
+}
+
+func (r1 *AVC) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*AVC)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if len(r1.Txt) != len(r2.Txt) {
+ return false
+ }
+ for i := 0; i < len(r1.Txt); i++ {
+ if r1.Txt[i] != r2.Txt[i] {
+ return false
+ }
+ }
+ return true
+}
+
+func (r1 *CAA) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*CAA)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Flag != r2.Flag {
+ return false
+ }
+ if r1.Tag != r2.Tag {
+ return false
+ }
+ if r1.Value != r2.Value {
+ return false
+ }
+ return true
+}
+
+func (r1 *CERT) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*CERT)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Type != r2.Type {
+ return false
+ }
+ if r1.KeyTag != r2.KeyTag {
+ return false
+ }
+ if r1.Algorithm != r2.Algorithm {
+ return false
+ }
+ if r1.Certificate != r2.Certificate {
+ return false
+ }
+ return true
+}
+
+func (r1 *CNAME) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*CNAME)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.Target, r2.Target) {
+ return false
+ }
+ return true
+}
+
+func (r1 *CSYNC) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*CSYNC)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Serial != r2.Serial {
+ return false
+ }
+ if r1.Flags != r2.Flags {
+ return false
+ }
+ if len(r1.TypeBitMap) != len(r2.TypeBitMap) {
+ return false
+ }
+ for i := 0; i < len(r1.TypeBitMap); i++ {
+ if r1.TypeBitMap[i] != r2.TypeBitMap[i] {
+ return false
+ }
+ }
+ return true
+}
+
+func (r1 *DHCID) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*DHCID)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Digest != r2.Digest {
+ return false
+ }
+ return true
+}
+
+func (r1 *DNAME) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*DNAME)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.Target, r2.Target) {
+ return false
+ }
+ return true
+}
+
+func (r1 *DNSKEY) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*DNSKEY)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Flags != r2.Flags {
+ return false
+ }
+ if r1.Protocol != r2.Protocol {
+ return false
+ }
+ if r1.Algorithm != r2.Algorithm {
+ return false
+ }
+ if r1.PublicKey != r2.PublicKey {
+ return false
+ }
+ return true
+}
+
+func (r1 *DS) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*DS)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.KeyTag != r2.KeyTag {
+ return false
+ }
+ if r1.Algorithm != r2.Algorithm {
+ return false
+ }
+ if r1.DigestType != r2.DigestType {
+ return false
+ }
+ if r1.Digest != r2.Digest {
+ return false
+ }
+ return true
+}
+
+func (r1 *EID) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*EID)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Endpoint != r2.Endpoint {
+ return false
+ }
+ return true
+}
+
+func (r1 *EUI48) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*EUI48)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Address != r2.Address {
+ return false
+ }
+ return true
+}
+
+func (r1 *EUI64) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*EUI64)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Address != r2.Address {
+ return false
+ }
+ return true
+}
+
+func (r1 *GID) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*GID)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Gid != r2.Gid {
+ return false
+ }
+ return true
+}
+
+func (r1 *GPOS) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*GPOS)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Longitude != r2.Longitude {
+ return false
+ }
+ if r1.Latitude != r2.Latitude {
+ return false
+ }
+ if r1.Altitude != r2.Altitude {
+ return false
+ }
+ return true
+}
+
+func (r1 *HINFO) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*HINFO)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Cpu != r2.Cpu {
+ return false
+ }
+ if r1.Os != r2.Os {
+ return false
+ }
+ return true
+}
+
+func (r1 *HIP) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*HIP)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.HitLength != r2.HitLength {
+ return false
+ }
+ if r1.PublicKeyAlgorithm != r2.PublicKeyAlgorithm {
+ return false
+ }
+ if r1.PublicKeyLength != r2.PublicKeyLength {
+ return false
+ }
+ if r1.Hit != r2.Hit {
+ return false
+ }
+ if r1.PublicKey != r2.PublicKey {
+ return false
+ }
+ if len(r1.RendezvousServers) != len(r2.RendezvousServers) {
+ return false
+ }
+ for i := 0; i < len(r1.RendezvousServers); i++ {
+ if !isDuplicateName(r1.RendezvousServers[i], r2.RendezvousServers[i]) {
+ return false
+ }
+ }
+ return true
+}
+
+func (r1 *KX) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*KX)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Preference != r2.Preference {
+ return false
+ }
+ if !isDuplicateName(r1.Exchanger, r2.Exchanger) {
+ return false
+ }
+ return true
+}
+
+func (r1 *L32) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*L32)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Preference != r2.Preference {
+ return false
+ }
+ if !r1.Locator32.Equal(r2.Locator32) {
+ return false
+ }
+ return true
+}
+
+func (r1 *L64) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*L64)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Preference != r2.Preference {
+ return false
+ }
+ if r1.Locator64 != r2.Locator64 {
+ return false
+ }
+ return true
+}
+
+func (r1 *LOC) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*LOC)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Version != r2.Version {
+ return false
+ }
+ if r1.Size != r2.Size {
+ return false
+ }
+ if r1.HorizPre != r2.HorizPre {
+ return false
+ }
+ if r1.VertPre != r2.VertPre {
+ return false
+ }
+ if r1.Latitude != r2.Latitude {
+ return false
+ }
+ if r1.Longitude != r2.Longitude {
+ return false
+ }
+ if r1.Altitude != r2.Altitude {
+ return false
+ }
+ return true
+}
+
+func (r1 *LP) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*LP)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Preference != r2.Preference {
+ return false
+ }
+ if !isDuplicateName(r1.Fqdn, r2.Fqdn) {
+ return false
+ }
+ return true
+}
+
+func (r1 *MB) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*MB)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.Mb, r2.Mb) {
+ return false
+ }
+ return true
+}
+
+func (r1 *MD) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*MD)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.Md, r2.Md) {
+ return false
+ }
+ return true
+}
+
+func (r1 *MF) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*MF)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.Mf, r2.Mf) {
+ return false
+ }
+ return true
+}
+
+func (r1 *MG) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*MG)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.Mg, r2.Mg) {
+ return false
+ }
+ return true
+}
+
+func (r1 *MINFO) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*MINFO)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.Rmail, r2.Rmail) {
+ return false
+ }
+ if !isDuplicateName(r1.Email, r2.Email) {
+ return false
+ }
+ return true
+}
+
+func (r1 *MR) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*MR)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.Mr, r2.Mr) {
+ return false
+ }
+ return true
+}
+
+func (r1 *MX) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*MX)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Preference != r2.Preference {
+ return false
+ }
+ if !isDuplicateName(r1.Mx, r2.Mx) {
+ return false
+ }
+ return true
+}
+
+func (r1 *NAPTR) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*NAPTR)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Order != r2.Order {
+ return false
+ }
+ if r1.Preference != r2.Preference {
+ return false
+ }
+ if r1.Flags != r2.Flags {
+ return false
+ }
+ if r1.Service != r2.Service {
+ return false
+ }
+ if r1.Regexp != r2.Regexp {
+ return false
+ }
+ if !isDuplicateName(r1.Replacement, r2.Replacement) {
+ return false
+ }
+ return true
+}
+
+func (r1 *NID) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*NID)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Preference != r2.Preference {
+ return false
+ }
+ if r1.NodeID != r2.NodeID {
+ return false
+ }
+ return true
+}
+
+func (r1 *NIMLOC) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*NIMLOC)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Locator != r2.Locator {
+ return false
+ }
+ return true
+}
+
+func (r1 *NINFO) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*NINFO)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if len(r1.ZSData) != len(r2.ZSData) {
+ return false
+ }
+ for i := 0; i < len(r1.ZSData); i++ {
+ if r1.ZSData[i] != r2.ZSData[i] {
+ return false
+ }
+ }
+ return true
+}
+
+func (r1 *NS) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*NS)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.Ns, r2.Ns) {
+ return false
+ }
+ return true
+}
+
+func (r1 *NSAPPTR) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*NSAPPTR)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.Ptr, r2.Ptr) {
+ return false
+ }
+ return true
+}
+
+func (r1 *NSEC) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*NSEC)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.NextDomain, r2.NextDomain) {
+ return false
+ }
+ if len(r1.TypeBitMap) != len(r2.TypeBitMap) {
+ return false
+ }
+ for i := 0; i < len(r1.TypeBitMap); i++ {
+ if r1.TypeBitMap[i] != r2.TypeBitMap[i] {
+ return false
+ }
+ }
+ return true
+}
+
+func (r1 *NSEC3) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*NSEC3)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Hash != r2.Hash {
+ return false
+ }
+ if r1.Flags != r2.Flags {
+ return false
+ }
+ if r1.Iterations != r2.Iterations {
+ return false
+ }
+ if r1.SaltLength != r2.SaltLength {
+ return false
+ }
+ if r1.Salt != r2.Salt {
+ return false
+ }
+ if r1.HashLength != r2.HashLength {
+ return false
+ }
+ if r1.NextDomain != r2.NextDomain {
+ return false
+ }
+ if len(r1.TypeBitMap) != len(r2.TypeBitMap) {
+ return false
+ }
+ for i := 0; i < len(r1.TypeBitMap); i++ {
+ if r1.TypeBitMap[i] != r2.TypeBitMap[i] {
+ return false
+ }
+ }
+ return true
+}
+
+func (r1 *NSEC3PARAM) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*NSEC3PARAM)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Hash != r2.Hash {
+ return false
+ }
+ if r1.Flags != r2.Flags {
+ return false
+ }
+ if r1.Iterations != r2.Iterations {
+ return false
+ }
+ if r1.SaltLength != r2.SaltLength {
+ return false
+ }
+ if r1.Salt != r2.Salt {
+ return false
+ }
+ return true
+}
+
+func (r1 *NULL) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*NULL)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Data != r2.Data {
+ return false
+ }
+ return true
+}
+
+func (r1 *OPENPGPKEY) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*OPENPGPKEY)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.PublicKey != r2.PublicKey {
+ return false
+ }
+ return true
+}
+
+func (r1 *PTR) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*PTR)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.Ptr, r2.Ptr) {
+ return false
+ }
+ return true
+}
+
+func (r1 *PX) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*PX)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Preference != r2.Preference {
+ return false
+ }
+ if !isDuplicateName(r1.Map822, r2.Map822) {
+ return false
+ }
+ if !isDuplicateName(r1.Mapx400, r2.Mapx400) {
+ return false
+ }
+ return true
+}
+
+func (r1 *RFC3597) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*RFC3597)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Rdata != r2.Rdata {
+ return false
+ }
+ return true
+}
+
+func (r1 *RKEY) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*RKEY)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Flags != r2.Flags {
+ return false
+ }
+ if r1.Protocol != r2.Protocol {
+ return false
+ }
+ if r1.Algorithm != r2.Algorithm {
+ return false
+ }
+ if r1.PublicKey != r2.PublicKey {
+ return false
+ }
+ return true
+}
+
+func (r1 *RP) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*RP)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.Mbox, r2.Mbox) {
+ return false
+ }
+ if !isDuplicateName(r1.Txt, r2.Txt) {
+ return false
+ }
+ return true
+}
+
+func (r1 *RRSIG) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*RRSIG)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.TypeCovered != r2.TypeCovered {
+ return false
+ }
+ if r1.Algorithm != r2.Algorithm {
+ return false
+ }
+ if r1.Labels != r2.Labels {
+ return false
+ }
+ if r1.OrigTtl != r2.OrigTtl {
+ return false
+ }
+ if r1.Expiration != r2.Expiration {
+ return false
+ }
+ if r1.Inception != r2.Inception {
+ return false
+ }
+ if r1.KeyTag != r2.KeyTag {
+ return false
+ }
+ if !isDuplicateName(r1.SignerName, r2.SignerName) {
+ return false
+ }
+ if r1.Signature != r2.Signature {
+ return false
+ }
+ return true
+}
+
+func (r1 *RT) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*RT)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Preference != r2.Preference {
+ return false
+ }
+ if !isDuplicateName(r1.Host, r2.Host) {
+ return false
+ }
+ return true
+}
+
+func (r1 *SMIMEA) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*SMIMEA)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Usage != r2.Usage {
+ return false
+ }
+ if r1.Selector != r2.Selector {
+ return false
+ }
+ if r1.MatchingType != r2.MatchingType {
+ return false
+ }
+ if r1.Certificate != r2.Certificate {
+ return false
+ }
+ return true
+}
+
+func (r1 *SOA) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*SOA)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.Ns, r2.Ns) {
+ return false
+ }
+ if !isDuplicateName(r1.Mbox, r2.Mbox) {
+ return false
+ }
+ if r1.Serial != r2.Serial {
+ return false
+ }
+ if r1.Refresh != r2.Refresh {
+ return false
+ }
+ if r1.Retry != r2.Retry {
+ return false
+ }
+ if r1.Expire != r2.Expire {
+ return false
+ }
+ if r1.Minttl != r2.Minttl {
+ return false
+ }
+ return true
+}
+
+func (r1 *SPF) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*SPF)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if len(r1.Txt) != len(r2.Txt) {
+ return false
+ }
+ for i := 0; i < len(r1.Txt); i++ {
+ if r1.Txt[i] != r2.Txt[i] {
+ return false
+ }
+ }
+ return true
+}
+
+func (r1 *SRV) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*SRV)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Priority != r2.Priority {
+ return false
+ }
+ if r1.Weight != r2.Weight {
+ return false
+ }
+ if r1.Port != r2.Port {
+ return false
+ }
+ if !isDuplicateName(r1.Target, r2.Target) {
+ return false
+ }
+ return true
+}
+
+func (r1 *SSHFP) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*SSHFP)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Algorithm != r2.Algorithm {
+ return false
+ }
+ if r1.Type != r2.Type {
+ return false
+ }
+ if r1.FingerPrint != r2.FingerPrint {
+ return false
+ }
+ return true
+}
+
+func (r1 *TA) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*TA)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.KeyTag != r2.KeyTag {
+ return false
+ }
+ if r1.Algorithm != r2.Algorithm {
+ return false
+ }
+ if r1.DigestType != r2.DigestType {
+ return false
+ }
+ if r1.Digest != r2.Digest {
+ return false
+ }
+ return true
+}
+
+func (r1 *TALINK) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*TALINK)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.PreviousName, r2.PreviousName) {
+ return false
+ }
+ if !isDuplicateName(r1.NextName, r2.NextName) {
+ return false
+ }
+ return true
+}
+
+func (r1 *TKEY) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*TKEY)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.Algorithm, r2.Algorithm) {
+ return false
+ }
+ if r1.Inception != r2.Inception {
+ return false
+ }
+ if r1.Expiration != r2.Expiration {
+ return false
+ }
+ if r1.Mode != r2.Mode {
+ return false
+ }
+ if r1.Error != r2.Error {
+ return false
+ }
+ if r1.KeySize != r2.KeySize {
+ return false
+ }
+ if r1.Key != r2.Key {
+ return false
+ }
+ if r1.OtherLen != r2.OtherLen {
+ return false
+ }
+ if r1.OtherData != r2.OtherData {
+ return false
+ }
+ return true
+}
+
+func (r1 *TLSA) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*TLSA)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Usage != r2.Usage {
+ return false
+ }
+ if r1.Selector != r2.Selector {
+ return false
+ }
+ if r1.MatchingType != r2.MatchingType {
+ return false
+ }
+ if r1.Certificate != r2.Certificate {
+ return false
+ }
+ return true
+}
+
+func (r1 *TSIG) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*TSIG)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if !isDuplicateName(r1.Algorithm, r2.Algorithm) {
+ return false
+ }
+ if r1.TimeSigned != r2.TimeSigned {
+ return false
+ }
+ if r1.Fudge != r2.Fudge {
+ return false
+ }
+ if r1.MACSize != r2.MACSize {
+ return false
+ }
+ if r1.MAC != r2.MAC {
+ return false
+ }
+ if r1.OrigId != r2.OrigId {
+ return false
+ }
+ if r1.Error != r2.Error {
+ return false
+ }
+ if r1.OtherLen != r2.OtherLen {
+ return false
+ }
+ if r1.OtherData != r2.OtherData {
+ return false
+ }
+ return true
+}
+
+func (r1 *TXT) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*TXT)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if len(r1.Txt) != len(r2.Txt) {
+ return false
+ }
+ for i := 0; i < len(r1.Txt); i++ {
+ if r1.Txt[i] != r2.Txt[i] {
+ return false
+ }
+ }
+ return true
+}
+
+func (r1 *UID) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*UID)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Uid != r2.Uid {
+ return false
+ }
+ return true
+}
+
+func (r1 *UINFO) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*UINFO)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Uinfo != r2.Uinfo {
+ return false
+ }
+ return true
+}
+
+func (r1 *URI) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*URI)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.Priority != r2.Priority {
+ return false
+ }
+ if r1.Weight != r2.Weight {
+ return false
+ }
+ if r1.Target != r2.Target {
+ return false
+ }
+ return true
+}
+
+func (r1 *X25) isDuplicate(_r2 RR) bool {
+ r2, ok := _r2.(*X25)
+ if !ok {
+ return false
+ }
+ _ = r2
+ if r1.PSDNAddress != r2.PSDNAddress {
+ return false
+ }
+ return true
+}
diff --git a/vendor/github.com/miekg/dns/zmsg.go b/vendor/github.com/miekg/dns/zmsg.go
new file mode 100644
index 0000000..02a5dfa
--- /dev/null
+++ b/vendor/github.com/miekg/dns/zmsg.go
@@ -0,0 +1,2741 @@
+// Code generated by "go run msg_generate.go"; DO NOT EDIT.
+
+package dns
+
+// pack*() functions
+
+func (rr *A) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDataA(rr.A, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *AAAA) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDataAAAA(rr.AAAA, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *AFSDB) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Subtype, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDomainName(rr.Hostname, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *ANY) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ return off, nil
+}
+
+func (rr *APL) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDataApl(rr.Prefixes, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *AVC) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packStringTxt(rr.Txt, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *CAA) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint8(rr.Flag, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packString(rr.Tag, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringOctet(rr.Value, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *CDNSKEY) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Flags, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Protocol, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Algorithm, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringBase64(rr.PublicKey, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *CDS) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.KeyTag, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Algorithm, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.DigestType, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringHex(rr.Digest, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *CERT) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Type, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.KeyTag, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Algorithm, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringBase64(rr.Certificate, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *CNAME) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.Target, msg, off, compression, compress)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *CSYNC) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint32(rr.Serial, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.Flags, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDataNsec(rr.TypeBitMap, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *DHCID) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packStringBase64(rr.Digest, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *DLV) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.KeyTag, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Algorithm, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.DigestType, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringHex(rr.Digest, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *DNAME) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.Target, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *DNSKEY) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Flags, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Protocol, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Algorithm, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringBase64(rr.PublicKey, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *DS) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.KeyTag, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Algorithm, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.DigestType, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringHex(rr.Digest, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *EID) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packStringHex(rr.Endpoint, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *EUI48) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint48(rr.Address, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *EUI64) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint64(rr.Address, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *GID) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint32(rr.Gid, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *GPOS) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packString(rr.Longitude, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packString(rr.Latitude, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packString(rr.Altitude, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *HINFO) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packString(rr.Cpu, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packString(rr.Os, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *HIP) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint8(rr.HitLength, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.PublicKeyAlgorithm, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.PublicKeyLength, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringHex(rr.Hit, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringBase64(rr.PublicKey, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDataDomainNames(rr.RendezvousServers, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *KEY) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Flags, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Protocol, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Algorithm, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringBase64(rr.PublicKey, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *KX) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Preference, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDomainName(rr.Exchanger, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *L32) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Preference, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDataA(rr.Locator32, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *L64) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Preference, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint64(rr.Locator64, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *LOC) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint8(rr.Version, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Size, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.HorizPre, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.VertPre, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.Latitude, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.Longitude, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.Altitude, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *LP) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Preference, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDomainName(rr.Fqdn, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *MB) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.Mb, msg, off, compression, compress)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *MD) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.Md, msg, off, compression, compress)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *MF) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.Mf, msg, off, compression, compress)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *MG) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.Mg, msg, off, compression, compress)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *MINFO) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.Rmail, msg, off, compression, compress)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDomainName(rr.Email, msg, off, compression, compress)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *MR) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.Mr, msg, off, compression, compress)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *MX) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Preference, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDomainName(rr.Mx, msg, off, compression, compress)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NAPTR) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Order, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.Preference, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packString(rr.Flags, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packString(rr.Service, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packString(rr.Regexp, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDomainName(rr.Replacement, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NID) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Preference, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint64(rr.NodeID, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NIMLOC) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packStringHex(rr.Locator, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NINFO) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packStringTxt(rr.ZSData, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NS) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.Ns, msg, off, compression, compress)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NSAPPTR) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.Ptr, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NSEC) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.NextDomain, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDataNsec(rr.TypeBitMap, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NSEC3) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint8(rr.Hash, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Flags, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.Iterations, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.SaltLength, msg, off)
+ if err != nil {
+ return off, err
+ }
+ // Only pack salt if value is not "-", i.e. empty
+ if rr.Salt != "-" {
+ off, err = packStringHex(rr.Salt, msg, off)
+ if err != nil {
+ return off, err
+ }
+ }
+ off, err = packUint8(rr.HashLength, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringBase32(rr.NextDomain, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDataNsec(rr.TypeBitMap, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NSEC3PARAM) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint8(rr.Hash, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Flags, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.Iterations, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.SaltLength, msg, off)
+ if err != nil {
+ return off, err
+ }
+ // Only pack salt if value is not "-", i.e. empty
+ if rr.Salt != "-" {
+ off, err = packStringHex(rr.Salt, msg, off)
+ if err != nil {
+ return off, err
+ }
+ }
+ return off, nil
+}
+
+func (rr *NULL) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packStringAny(rr.Data, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *OPENPGPKEY) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packStringBase64(rr.PublicKey, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *OPT) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDataOpt(rr.Option, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *PTR) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.Ptr, msg, off, compression, compress)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *PX) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Preference, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDomainName(rr.Map822, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDomainName(rr.Mapx400, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *RFC3597) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packStringHex(rr.Rdata, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *RKEY) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Flags, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Protocol, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Algorithm, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringBase64(rr.PublicKey, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *RP) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.Mbox, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDomainName(rr.Txt, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *RRSIG) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.TypeCovered, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Algorithm, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Labels, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.OrigTtl, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.Expiration, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.Inception, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.KeyTag, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDomainName(rr.SignerName, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringBase64(rr.Signature, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *RT) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Preference, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDomainName(rr.Host, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *SIG) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.TypeCovered, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Algorithm, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Labels, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.OrigTtl, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.Expiration, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.Inception, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.KeyTag, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDomainName(rr.SignerName, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringBase64(rr.Signature, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *SMIMEA) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint8(rr.Usage, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Selector, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.MatchingType, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringHex(rr.Certificate, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *SOA) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.Ns, msg, off, compression, compress)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDomainName(rr.Mbox, msg, off, compression, compress)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.Serial, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.Refresh, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.Retry, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.Expire, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.Minttl, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *SPF) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packStringTxt(rr.Txt, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *SRV) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Priority, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.Weight, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.Port, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDomainName(rr.Target, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *SSHFP) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint8(rr.Algorithm, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Type, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringHex(rr.FingerPrint, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *TA) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.KeyTag, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Algorithm, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.DigestType, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringHex(rr.Digest, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *TALINK) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.PreviousName, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ off, err = packDomainName(rr.NextName, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *TKEY) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.Algorithm, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.Inception, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint32(rr.Expiration, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.Mode, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.Error, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.KeySize, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringHex(rr.Key, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.OtherLen, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringHex(rr.OtherData, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *TLSA) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint8(rr.Usage, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.Selector, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint8(rr.MatchingType, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringHex(rr.Certificate, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *TSIG) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packDomainName(rr.Algorithm, msg, off, compression, false)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint48(rr.TimeSigned, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.Fudge, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.MACSize, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringHex(rr.MAC, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.OrigId, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.Error, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.OtherLen, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringHex(rr.OtherData, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *TXT) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packStringTxt(rr.Txt, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *UID) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint32(rr.Uid, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *UINFO) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packString(rr.Uinfo, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *URI) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packUint16(rr.Priority, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packUint16(rr.Weight, msg, off)
+ if err != nil {
+ return off, err
+ }
+ off, err = packStringOctet(rr.Target, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *X25) pack(msg []byte, off int, compression compressionMap, compress bool) (off1 int, err error) {
+ off, err = packString(rr.PSDNAddress, msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+// unpack*() functions
+
+func (rr *A) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.A, off, err = unpackDataA(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *AAAA) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.AAAA, off, err = unpackDataAAAA(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *AFSDB) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Subtype, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Hostname, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *ANY) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ return off, nil
+}
+
+func (rr *APL) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Prefixes, off, err = unpackDataApl(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *AVC) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Txt, off, err = unpackStringTxt(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *CAA) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Flag, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Tag, off, err = unpackString(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Value, off, err = unpackStringOctet(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *CDNSKEY) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Flags, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Protocol, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Algorithm, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.PublicKey, off, err = unpackStringBase64(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *CDS) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.KeyTag, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Algorithm, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.DigestType, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Digest, off, err = unpackStringHex(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *CERT) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Type, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.KeyTag, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Algorithm, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Certificate, off, err = unpackStringBase64(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *CNAME) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Target, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *CSYNC) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Serial, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Flags, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.TypeBitMap, off, err = unpackDataNsec(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *DHCID) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Digest, off, err = unpackStringBase64(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *DLV) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.KeyTag, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Algorithm, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.DigestType, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Digest, off, err = unpackStringHex(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *DNAME) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Target, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *DNSKEY) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Flags, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Protocol, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Algorithm, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.PublicKey, off, err = unpackStringBase64(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *DS) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.KeyTag, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Algorithm, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.DigestType, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Digest, off, err = unpackStringHex(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *EID) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Endpoint, off, err = unpackStringHex(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *EUI48) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Address, off, err = unpackUint48(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *EUI64) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Address, off, err = unpackUint64(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *GID) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Gid, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *GPOS) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Longitude, off, err = unpackString(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Latitude, off, err = unpackString(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Altitude, off, err = unpackString(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *HINFO) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Cpu, off, err = unpackString(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Os, off, err = unpackString(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *HIP) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.HitLength, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.PublicKeyAlgorithm, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.PublicKeyLength, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Hit, off, err = unpackStringHex(msg, off, off+int(rr.HitLength))
+ if err != nil {
+ return off, err
+ }
+ rr.PublicKey, off, err = unpackStringBase64(msg, off, off+int(rr.PublicKeyLength))
+ if err != nil {
+ return off, err
+ }
+ rr.RendezvousServers, off, err = unpackDataDomainNames(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *KEY) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Flags, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Protocol, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Algorithm, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.PublicKey, off, err = unpackStringBase64(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *KX) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Preference, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Exchanger, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *L32) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Preference, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Locator32, off, err = unpackDataA(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *L64) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Preference, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Locator64, off, err = unpackUint64(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *LOC) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Version, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Size, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.HorizPre, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.VertPre, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Latitude, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Longitude, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Altitude, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *LP) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Preference, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Fqdn, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *MB) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Mb, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *MD) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Md, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *MF) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Mf, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *MG) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Mg, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *MINFO) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Rmail, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Email, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *MR) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Mr, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *MX) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Preference, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Mx, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NAPTR) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Order, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Preference, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Flags, off, err = unpackString(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Service, off, err = unpackString(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Regexp, off, err = unpackString(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Replacement, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NID) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Preference, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.NodeID, off, err = unpackUint64(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NIMLOC) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Locator, off, err = unpackStringHex(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NINFO) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.ZSData, off, err = unpackStringTxt(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NS) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Ns, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NSAPPTR) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Ptr, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NSEC) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.NextDomain, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.TypeBitMap, off, err = unpackDataNsec(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NSEC3) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Hash, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Flags, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Iterations, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.SaltLength, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Salt, off, err = unpackStringHex(msg, off, off+int(rr.SaltLength))
+ if err != nil {
+ return off, err
+ }
+ rr.HashLength, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.NextDomain, off, err = unpackStringBase32(msg, off, off+int(rr.HashLength))
+ if err != nil {
+ return off, err
+ }
+ rr.TypeBitMap, off, err = unpackDataNsec(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NSEC3PARAM) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Hash, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Flags, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Iterations, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.SaltLength, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Salt, off, err = unpackStringHex(msg, off, off+int(rr.SaltLength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *NULL) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Data, off, err = unpackStringAny(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *OPENPGPKEY) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.PublicKey, off, err = unpackStringBase64(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *OPT) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Option, off, err = unpackDataOpt(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *PTR) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Ptr, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *PX) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Preference, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Map822, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Mapx400, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *RFC3597) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Rdata, off, err = unpackStringHex(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *RKEY) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Flags, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Protocol, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Algorithm, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.PublicKey, off, err = unpackStringBase64(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *RP) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Mbox, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Txt, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *RRSIG) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.TypeCovered, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Algorithm, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Labels, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.OrigTtl, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Expiration, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Inception, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.KeyTag, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.SignerName, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Signature, off, err = unpackStringBase64(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *RT) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Preference, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Host, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *SIG) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.TypeCovered, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Algorithm, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Labels, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.OrigTtl, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Expiration, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Inception, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.KeyTag, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.SignerName, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Signature, off, err = unpackStringBase64(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *SMIMEA) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Usage, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Selector, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.MatchingType, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Certificate, off, err = unpackStringHex(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *SOA) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Ns, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Mbox, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Serial, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Refresh, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Retry, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Expire, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Minttl, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *SPF) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Txt, off, err = unpackStringTxt(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *SRV) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Priority, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Weight, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Port, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Target, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *SSHFP) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Algorithm, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Type, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.FingerPrint, off, err = unpackStringHex(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *TA) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.KeyTag, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Algorithm, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.DigestType, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Digest, off, err = unpackStringHex(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *TALINK) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.PreviousName, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.NextName, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *TKEY) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Algorithm, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Inception, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Expiration, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Mode, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Error, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.KeySize, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Key, off, err = unpackStringHex(msg, off, off+int(rr.KeySize))
+ if err != nil {
+ return off, err
+ }
+ rr.OtherLen, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.OtherData, off, err = unpackStringHex(msg, off, off+int(rr.OtherLen))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *TLSA) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Usage, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Selector, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.MatchingType, off, err = unpackUint8(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Certificate, off, err = unpackStringHex(msg, off, rdStart+int(rr.Hdr.Rdlength))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *TSIG) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Algorithm, off, err = UnpackDomainName(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.TimeSigned, off, err = unpackUint48(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Fudge, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.MACSize, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.MAC, off, err = unpackStringHex(msg, off, off+int(rr.MACSize))
+ if err != nil {
+ return off, err
+ }
+ rr.OrigId, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Error, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.OtherLen, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.OtherData, off, err = unpackStringHex(msg, off, off+int(rr.OtherLen))
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *TXT) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Txt, off, err = unpackStringTxt(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *UID) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Uid, off, err = unpackUint32(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *UINFO) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Uinfo, off, err = unpackString(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *URI) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.Priority, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Weight, off, err = unpackUint16(msg, off)
+ if err != nil {
+ return off, err
+ }
+ if off == len(msg) {
+ return off, nil
+ }
+ rr.Target, off, err = unpackStringOctet(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
+
+func (rr *X25) unpack(msg []byte, off int) (off1 int, err error) {
+ rdStart := off
+ _ = rdStart
+
+ rr.PSDNAddress, off, err = unpackString(msg, off)
+ if err != nil {
+ return off, err
+ }
+ return off, nil
+}
diff --git a/vendor/github.com/miekg/dns/ztypes.go b/vendor/github.com/miekg/dns/ztypes.go
new file mode 100644
index 0000000..1cbd6d3
--- /dev/null
+++ b/vendor/github.com/miekg/dns/ztypes.go
@@ -0,0 +1,898 @@
+// Code generated by "go run types_generate.go"; DO NOT EDIT.
+
+package dns
+
+import (
+ "encoding/base64"
+ "net"
+)
+
+// TypeToRR is a map of constructors for each RR type.
+var TypeToRR = map[uint16]func() RR{
+ TypeA: func() RR { return new(A) },
+ TypeAAAA: func() RR { return new(AAAA) },
+ TypeAFSDB: func() RR { return new(AFSDB) },
+ TypeANY: func() RR { return new(ANY) },
+ TypeAPL: func() RR { return new(APL) },
+ TypeAVC: func() RR { return new(AVC) },
+ TypeCAA: func() RR { return new(CAA) },
+ TypeCDNSKEY: func() RR { return new(CDNSKEY) },
+ TypeCDS: func() RR { return new(CDS) },
+ TypeCERT: func() RR { return new(CERT) },
+ TypeCNAME: func() RR { return new(CNAME) },
+ TypeCSYNC: func() RR { return new(CSYNC) },
+ TypeDHCID: func() RR { return new(DHCID) },
+ TypeDLV: func() RR { return new(DLV) },
+ TypeDNAME: func() RR { return new(DNAME) },
+ TypeDNSKEY: func() RR { return new(DNSKEY) },
+ TypeDS: func() RR { return new(DS) },
+ TypeEID: func() RR { return new(EID) },
+ TypeEUI48: func() RR { return new(EUI48) },
+ TypeEUI64: func() RR { return new(EUI64) },
+ TypeGID: func() RR { return new(GID) },
+ TypeGPOS: func() RR { return new(GPOS) },
+ TypeHINFO: func() RR { return new(HINFO) },
+ TypeHIP: func() RR { return new(HIP) },
+ TypeKEY: func() RR { return new(KEY) },
+ TypeKX: func() RR { return new(KX) },
+ TypeL32: func() RR { return new(L32) },
+ TypeL64: func() RR { return new(L64) },
+ TypeLOC: func() RR { return new(LOC) },
+ TypeLP: func() RR { return new(LP) },
+ TypeMB: func() RR { return new(MB) },
+ TypeMD: func() RR { return new(MD) },
+ TypeMF: func() RR { return new(MF) },
+ TypeMG: func() RR { return new(MG) },
+ TypeMINFO: func() RR { return new(MINFO) },
+ TypeMR: func() RR { return new(MR) },
+ TypeMX: func() RR { return new(MX) },
+ TypeNAPTR: func() RR { return new(NAPTR) },
+ TypeNID: func() RR { return new(NID) },
+ TypeNIMLOC: func() RR { return new(NIMLOC) },
+ TypeNINFO: func() RR { return new(NINFO) },
+ TypeNS: func() RR { return new(NS) },
+ TypeNSAPPTR: func() RR { return new(NSAPPTR) },
+ TypeNSEC: func() RR { return new(NSEC) },
+ TypeNSEC3: func() RR { return new(NSEC3) },
+ TypeNSEC3PARAM: func() RR { return new(NSEC3PARAM) },
+ TypeNULL: func() RR { return new(NULL) },
+ TypeOPENPGPKEY: func() RR { return new(OPENPGPKEY) },
+ TypeOPT: func() RR { return new(OPT) },
+ TypePTR: func() RR { return new(PTR) },
+ TypePX: func() RR { return new(PX) },
+ TypeRKEY: func() RR { return new(RKEY) },
+ TypeRP: func() RR { return new(RP) },
+ TypeRRSIG: func() RR { return new(RRSIG) },
+ TypeRT: func() RR { return new(RT) },
+ TypeSIG: func() RR { return new(SIG) },
+ TypeSMIMEA: func() RR { return new(SMIMEA) },
+ TypeSOA: func() RR { return new(SOA) },
+ TypeSPF: func() RR { return new(SPF) },
+ TypeSRV: func() RR { return new(SRV) },
+ TypeSSHFP: func() RR { return new(SSHFP) },
+ TypeTA: func() RR { return new(TA) },
+ TypeTALINK: func() RR { return new(TALINK) },
+ TypeTKEY: func() RR { return new(TKEY) },
+ TypeTLSA: func() RR { return new(TLSA) },
+ TypeTSIG: func() RR { return new(TSIG) },
+ TypeTXT: func() RR { return new(TXT) },
+ TypeUID: func() RR { return new(UID) },
+ TypeUINFO: func() RR { return new(UINFO) },
+ TypeURI: func() RR { return new(URI) },
+ TypeX25: func() RR { return new(X25) },
+}
+
+// TypeToString is a map of strings for each RR type.
+var TypeToString = map[uint16]string{
+ TypeA: "A",
+ TypeAAAA: "AAAA",
+ TypeAFSDB: "AFSDB",
+ TypeANY: "ANY",
+ TypeAPL: "APL",
+ TypeATMA: "ATMA",
+ TypeAVC: "AVC",
+ TypeAXFR: "AXFR",
+ TypeCAA: "CAA",
+ TypeCDNSKEY: "CDNSKEY",
+ TypeCDS: "CDS",
+ TypeCERT: "CERT",
+ TypeCNAME: "CNAME",
+ TypeCSYNC: "CSYNC",
+ TypeDHCID: "DHCID",
+ TypeDLV: "DLV",
+ TypeDNAME: "DNAME",
+ TypeDNSKEY: "DNSKEY",
+ TypeDS: "DS",
+ TypeEID: "EID",
+ TypeEUI48: "EUI48",
+ TypeEUI64: "EUI64",
+ TypeGID: "GID",
+ TypeGPOS: "GPOS",
+ TypeHINFO: "HINFO",
+ TypeHIP: "HIP",
+ TypeISDN: "ISDN",
+ TypeIXFR: "IXFR",
+ TypeKEY: "KEY",
+ TypeKX: "KX",
+ TypeL32: "L32",
+ TypeL64: "L64",
+ TypeLOC: "LOC",
+ TypeLP: "LP",
+ TypeMAILA: "MAILA",
+ TypeMAILB: "MAILB",
+ TypeMB: "MB",
+ TypeMD: "MD",
+ TypeMF: "MF",
+ TypeMG: "MG",
+ TypeMINFO: "MINFO",
+ TypeMR: "MR",
+ TypeMX: "MX",
+ TypeNAPTR: "NAPTR",
+ TypeNID: "NID",
+ TypeNIMLOC: "NIMLOC",
+ TypeNINFO: "NINFO",
+ TypeNS: "NS",
+ TypeNSEC: "NSEC",
+ TypeNSEC3: "NSEC3",
+ TypeNSEC3PARAM: "NSEC3PARAM",
+ TypeNULL: "NULL",
+ TypeNXT: "NXT",
+ TypeNone: "None",
+ TypeOPENPGPKEY: "OPENPGPKEY",
+ TypeOPT: "OPT",
+ TypePTR: "PTR",
+ TypePX: "PX",
+ TypeRKEY: "RKEY",
+ TypeRP: "RP",
+ TypeRRSIG: "RRSIG",
+ TypeRT: "RT",
+ TypeReserved: "Reserved",
+ TypeSIG: "SIG",
+ TypeSMIMEA: "SMIMEA",
+ TypeSOA: "SOA",
+ TypeSPF: "SPF",
+ TypeSRV: "SRV",
+ TypeSSHFP: "SSHFP",
+ TypeTA: "TA",
+ TypeTALINK: "TALINK",
+ TypeTKEY: "TKEY",
+ TypeTLSA: "TLSA",
+ TypeTSIG: "TSIG",
+ TypeTXT: "TXT",
+ TypeUID: "UID",
+ TypeUINFO: "UINFO",
+ TypeUNSPEC: "UNSPEC",
+ TypeURI: "URI",
+ TypeX25: "X25",
+ TypeNSAPPTR: "NSAP-PTR",
+}
+
+func (rr *A) Header() *RR_Header { return &rr.Hdr }
+func (rr *AAAA) Header() *RR_Header { return &rr.Hdr }
+func (rr *AFSDB) Header() *RR_Header { return &rr.Hdr }
+func (rr *ANY) Header() *RR_Header { return &rr.Hdr }
+func (rr *APL) Header() *RR_Header { return &rr.Hdr }
+func (rr *AVC) Header() *RR_Header { return &rr.Hdr }
+func (rr *CAA) Header() *RR_Header { return &rr.Hdr }
+func (rr *CDNSKEY) Header() *RR_Header { return &rr.Hdr }
+func (rr *CDS) Header() *RR_Header { return &rr.Hdr }
+func (rr *CERT) Header() *RR_Header { return &rr.Hdr }
+func (rr *CNAME) Header() *RR_Header { return &rr.Hdr }
+func (rr *CSYNC) Header() *RR_Header { return &rr.Hdr }
+func (rr *DHCID) Header() *RR_Header { return &rr.Hdr }
+func (rr *DLV) Header() *RR_Header { return &rr.Hdr }
+func (rr *DNAME) Header() *RR_Header { return &rr.Hdr }
+func (rr *DNSKEY) Header() *RR_Header { return &rr.Hdr }
+func (rr *DS) Header() *RR_Header { return &rr.Hdr }
+func (rr *EID) Header() *RR_Header { return &rr.Hdr }
+func (rr *EUI48) Header() *RR_Header { return &rr.Hdr }
+func (rr *EUI64) Header() *RR_Header { return &rr.Hdr }
+func (rr *GID) Header() *RR_Header { return &rr.Hdr }
+func (rr *GPOS) Header() *RR_Header { return &rr.Hdr }
+func (rr *HINFO) Header() *RR_Header { return &rr.Hdr }
+func (rr *HIP) Header() *RR_Header { return &rr.Hdr }
+func (rr *KEY) Header() *RR_Header { return &rr.Hdr }
+func (rr *KX) Header() *RR_Header { return &rr.Hdr }
+func (rr *L32) Header() *RR_Header { return &rr.Hdr }
+func (rr *L64) Header() *RR_Header { return &rr.Hdr }
+func (rr *LOC) Header() *RR_Header { return &rr.Hdr }
+func (rr *LP) Header() *RR_Header { return &rr.Hdr }
+func (rr *MB) Header() *RR_Header { return &rr.Hdr }
+func (rr *MD) Header() *RR_Header { return &rr.Hdr }
+func (rr *MF) Header() *RR_Header { return &rr.Hdr }
+func (rr *MG) Header() *RR_Header { return &rr.Hdr }
+func (rr *MINFO) Header() *RR_Header { return &rr.Hdr }
+func (rr *MR) Header() *RR_Header { return &rr.Hdr }
+func (rr *MX) Header() *RR_Header { return &rr.Hdr }
+func (rr *NAPTR) Header() *RR_Header { return &rr.Hdr }
+func (rr *NID) Header() *RR_Header { return &rr.Hdr }
+func (rr *NIMLOC) Header() *RR_Header { return &rr.Hdr }
+func (rr *NINFO) Header() *RR_Header { return &rr.Hdr }
+func (rr *NS) Header() *RR_Header { return &rr.Hdr }
+func (rr *NSAPPTR) Header() *RR_Header { return &rr.Hdr }
+func (rr *NSEC) Header() *RR_Header { return &rr.Hdr }
+func (rr *NSEC3) Header() *RR_Header { return &rr.Hdr }
+func (rr *NSEC3PARAM) Header() *RR_Header { return &rr.Hdr }
+func (rr *NULL) Header() *RR_Header { return &rr.Hdr }
+func (rr *OPENPGPKEY) Header() *RR_Header { return &rr.Hdr }
+func (rr *OPT) Header() *RR_Header { return &rr.Hdr }
+func (rr *PTR) Header() *RR_Header { return &rr.Hdr }
+func (rr *PX) Header() *RR_Header { return &rr.Hdr }
+func (rr *RFC3597) Header() *RR_Header { return &rr.Hdr }
+func (rr *RKEY) Header() *RR_Header { return &rr.Hdr }
+func (rr *RP) Header() *RR_Header { return &rr.Hdr }
+func (rr *RRSIG) Header() *RR_Header { return &rr.Hdr }
+func (rr *RT) Header() *RR_Header { return &rr.Hdr }
+func (rr *SIG) Header() *RR_Header { return &rr.Hdr }
+func (rr *SMIMEA) Header() *RR_Header { return &rr.Hdr }
+func (rr *SOA) Header() *RR_Header { return &rr.Hdr }
+func (rr *SPF) Header() *RR_Header { return &rr.Hdr }
+func (rr *SRV) Header() *RR_Header { return &rr.Hdr }
+func (rr *SSHFP) Header() *RR_Header { return &rr.Hdr }
+func (rr *TA) Header() *RR_Header { return &rr.Hdr }
+func (rr *TALINK) Header() *RR_Header { return &rr.Hdr }
+func (rr *TKEY) Header() *RR_Header { return &rr.Hdr }
+func (rr *TLSA) Header() *RR_Header { return &rr.Hdr }
+func (rr *TSIG) Header() *RR_Header { return &rr.Hdr }
+func (rr *TXT) Header() *RR_Header { return &rr.Hdr }
+func (rr *UID) Header() *RR_Header { return &rr.Hdr }
+func (rr *UINFO) Header() *RR_Header { return &rr.Hdr }
+func (rr *URI) Header() *RR_Header { return &rr.Hdr }
+func (rr *X25) Header() *RR_Header { return &rr.Hdr }
+
+// len() functions
+func (rr *A) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ if len(rr.A) != 0 {
+ l += net.IPv4len
+ }
+ return l
+}
+func (rr *AAAA) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ if len(rr.AAAA) != 0 {
+ l += net.IPv6len
+ }
+ return l
+}
+func (rr *AFSDB) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // Subtype
+ l += domainNameLen(rr.Hostname, off+l, compression, false)
+ return l
+}
+func (rr *ANY) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ return l
+}
+func (rr *APL) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ for _, x := range rr.Prefixes {
+ l += x.len()
+ }
+ return l
+}
+func (rr *AVC) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ for _, x := range rr.Txt {
+ l += len(x) + 1
+ }
+ return l
+}
+func (rr *CAA) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l++ // Flag
+ l += len(rr.Tag) + 1
+ l += len(rr.Value)
+ return l
+}
+func (rr *CERT) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // Type
+ l += 2 // KeyTag
+ l++ // Algorithm
+ l += base64.StdEncoding.DecodedLen(len(rr.Certificate))
+ return l
+}
+func (rr *CNAME) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.Target, off+l, compression, true)
+ return l
+}
+func (rr *DHCID) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += base64.StdEncoding.DecodedLen(len(rr.Digest))
+ return l
+}
+func (rr *DNAME) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.Target, off+l, compression, false)
+ return l
+}
+func (rr *DNSKEY) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // Flags
+ l++ // Protocol
+ l++ // Algorithm
+ l += base64.StdEncoding.DecodedLen(len(rr.PublicKey))
+ return l
+}
+func (rr *DS) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // KeyTag
+ l++ // Algorithm
+ l++ // DigestType
+ l += len(rr.Digest) / 2
+ return l
+}
+func (rr *EID) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += len(rr.Endpoint) / 2
+ return l
+}
+func (rr *EUI48) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 6 // Address
+ return l
+}
+func (rr *EUI64) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 8 // Address
+ return l
+}
+func (rr *GID) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 4 // Gid
+ return l
+}
+func (rr *GPOS) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += len(rr.Longitude) + 1
+ l += len(rr.Latitude) + 1
+ l += len(rr.Altitude) + 1
+ return l
+}
+func (rr *HINFO) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += len(rr.Cpu) + 1
+ l += len(rr.Os) + 1
+ return l
+}
+func (rr *HIP) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l++ // HitLength
+ l++ // PublicKeyAlgorithm
+ l += 2 // PublicKeyLength
+ l += len(rr.Hit) / 2
+ l += base64.StdEncoding.DecodedLen(len(rr.PublicKey))
+ for _, x := range rr.RendezvousServers {
+ l += domainNameLen(x, off+l, compression, false)
+ }
+ return l
+}
+func (rr *KX) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // Preference
+ l += domainNameLen(rr.Exchanger, off+l, compression, false)
+ return l
+}
+func (rr *L32) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // Preference
+ if len(rr.Locator32) != 0 {
+ l += net.IPv4len
+ }
+ return l
+}
+func (rr *L64) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // Preference
+ l += 8 // Locator64
+ return l
+}
+func (rr *LOC) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l++ // Version
+ l++ // Size
+ l++ // HorizPre
+ l++ // VertPre
+ l += 4 // Latitude
+ l += 4 // Longitude
+ l += 4 // Altitude
+ return l
+}
+func (rr *LP) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // Preference
+ l += domainNameLen(rr.Fqdn, off+l, compression, false)
+ return l
+}
+func (rr *MB) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.Mb, off+l, compression, true)
+ return l
+}
+func (rr *MD) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.Md, off+l, compression, true)
+ return l
+}
+func (rr *MF) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.Mf, off+l, compression, true)
+ return l
+}
+func (rr *MG) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.Mg, off+l, compression, true)
+ return l
+}
+func (rr *MINFO) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.Rmail, off+l, compression, true)
+ l += domainNameLen(rr.Email, off+l, compression, true)
+ return l
+}
+func (rr *MR) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.Mr, off+l, compression, true)
+ return l
+}
+func (rr *MX) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // Preference
+ l += domainNameLen(rr.Mx, off+l, compression, true)
+ return l
+}
+func (rr *NAPTR) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // Order
+ l += 2 // Preference
+ l += len(rr.Flags) + 1
+ l += len(rr.Service) + 1
+ l += len(rr.Regexp) + 1
+ l += domainNameLen(rr.Replacement, off+l, compression, false)
+ return l
+}
+func (rr *NID) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // Preference
+ l += 8 // NodeID
+ return l
+}
+func (rr *NIMLOC) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += len(rr.Locator) / 2
+ return l
+}
+func (rr *NINFO) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ for _, x := range rr.ZSData {
+ l += len(x) + 1
+ }
+ return l
+}
+func (rr *NS) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.Ns, off+l, compression, true)
+ return l
+}
+func (rr *NSAPPTR) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.Ptr, off+l, compression, false)
+ return l
+}
+func (rr *NSEC3PARAM) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l++ // Hash
+ l++ // Flags
+ l += 2 // Iterations
+ l++ // SaltLength
+ l += len(rr.Salt) / 2
+ return l
+}
+func (rr *NULL) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += len(rr.Data)
+ return l
+}
+func (rr *OPENPGPKEY) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += base64.StdEncoding.DecodedLen(len(rr.PublicKey))
+ return l
+}
+func (rr *PTR) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.Ptr, off+l, compression, true)
+ return l
+}
+func (rr *PX) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // Preference
+ l += domainNameLen(rr.Map822, off+l, compression, false)
+ l += domainNameLen(rr.Mapx400, off+l, compression, false)
+ return l
+}
+func (rr *RFC3597) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += len(rr.Rdata) / 2
+ return l
+}
+func (rr *RKEY) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // Flags
+ l++ // Protocol
+ l++ // Algorithm
+ l += base64.StdEncoding.DecodedLen(len(rr.PublicKey))
+ return l
+}
+func (rr *RP) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.Mbox, off+l, compression, false)
+ l += domainNameLen(rr.Txt, off+l, compression, false)
+ return l
+}
+func (rr *RRSIG) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // TypeCovered
+ l++ // Algorithm
+ l++ // Labels
+ l += 4 // OrigTtl
+ l += 4 // Expiration
+ l += 4 // Inception
+ l += 2 // KeyTag
+ l += domainNameLen(rr.SignerName, off+l, compression, false)
+ l += base64.StdEncoding.DecodedLen(len(rr.Signature))
+ return l
+}
+func (rr *RT) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // Preference
+ l += domainNameLen(rr.Host, off+l, compression, false)
+ return l
+}
+func (rr *SMIMEA) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l++ // Usage
+ l++ // Selector
+ l++ // MatchingType
+ l += len(rr.Certificate) / 2
+ return l
+}
+func (rr *SOA) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.Ns, off+l, compression, true)
+ l += domainNameLen(rr.Mbox, off+l, compression, true)
+ l += 4 // Serial
+ l += 4 // Refresh
+ l += 4 // Retry
+ l += 4 // Expire
+ l += 4 // Minttl
+ return l
+}
+func (rr *SPF) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ for _, x := range rr.Txt {
+ l += len(x) + 1
+ }
+ return l
+}
+func (rr *SRV) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // Priority
+ l += 2 // Weight
+ l += 2 // Port
+ l += domainNameLen(rr.Target, off+l, compression, false)
+ return l
+}
+func (rr *SSHFP) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l++ // Algorithm
+ l++ // Type
+ l += len(rr.FingerPrint) / 2
+ return l
+}
+func (rr *TA) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // KeyTag
+ l++ // Algorithm
+ l++ // DigestType
+ l += len(rr.Digest) / 2
+ return l
+}
+func (rr *TALINK) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.PreviousName, off+l, compression, false)
+ l += domainNameLen(rr.NextName, off+l, compression, false)
+ return l
+}
+func (rr *TKEY) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.Algorithm, off+l, compression, false)
+ l += 4 // Inception
+ l += 4 // Expiration
+ l += 2 // Mode
+ l += 2 // Error
+ l += 2 // KeySize
+ l += len(rr.Key) / 2
+ l += 2 // OtherLen
+ l += len(rr.OtherData) / 2
+ return l
+}
+func (rr *TLSA) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l++ // Usage
+ l++ // Selector
+ l++ // MatchingType
+ l += len(rr.Certificate) / 2
+ return l
+}
+func (rr *TSIG) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += domainNameLen(rr.Algorithm, off+l, compression, false)
+ l += 6 // TimeSigned
+ l += 2 // Fudge
+ l += 2 // MACSize
+ l += len(rr.MAC) / 2
+ l += 2 // OrigId
+ l += 2 // Error
+ l += 2 // OtherLen
+ l += len(rr.OtherData) / 2
+ return l
+}
+func (rr *TXT) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ for _, x := range rr.Txt {
+ l += len(x) + 1
+ }
+ return l
+}
+func (rr *UID) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 4 // Uid
+ return l
+}
+func (rr *UINFO) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += len(rr.Uinfo) + 1
+ return l
+}
+func (rr *URI) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += 2 // Priority
+ l += 2 // Weight
+ l += len(rr.Target)
+ return l
+}
+func (rr *X25) len(off int, compression map[string]struct{}) int {
+ l := rr.Hdr.len(off, compression)
+ l += len(rr.PSDNAddress) + 1
+ return l
+}
+
+// copy() functions
+func (rr *A) copy() RR {
+ return &A{rr.Hdr, copyIP(rr.A)}
+}
+func (rr *AAAA) copy() RR {
+ return &AAAA{rr.Hdr, copyIP(rr.AAAA)}
+}
+func (rr *AFSDB) copy() RR {
+ return &AFSDB{rr.Hdr, rr.Subtype, rr.Hostname}
+}
+func (rr *ANY) copy() RR {
+ return &ANY{rr.Hdr}
+}
+func (rr *APL) copy() RR {
+ Prefixes := make([]APLPrefix, len(rr.Prefixes))
+ for i := range rr.Prefixes {
+ Prefixes[i] = rr.Prefixes[i].copy()
+ }
+ return &APL{rr.Hdr, Prefixes}
+}
+func (rr *AVC) copy() RR {
+ Txt := make([]string, len(rr.Txt))
+ copy(Txt, rr.Txt)
+ return &AVC{rr.Hdr, Txt}
+}
+func (rr *CAA) copy() RR {
+ return &CAA{rr.Hdr, rr.Flag, rr.Tag, rr.Value}
+}
+func (rr *CERT) copy() RR {
+ return &CERT{rr.Hdr, rr.Type, rr.KeyTag, rr.Algorithm, rr.Certificate}
+}
+func (rr *CNAME) copy() RR {
+ return &CNAME{rr.Hdr, rr.Target}
+}
+func (rr *CSYNC) copy() RR {
+ TypeBitMap := make([]uint16, len(rr.TypeBitMap))
+ copy(TypeBitMap, rr.TypeBitMap)
+ return &CSYNC{rr.Hdr, rr.Serial, rr.Flags, TypeBitMap}
+}
+func (rr *DHCID) copy() RR {
+ return &DHCID{rr.Hdr, rr.Digest}
+}
+func (rr *DNAME) copy() RR {
+ return &DNAME{rr.Hdr, rr.Target}
+}
+func (rr *DNSKEY) copy() RR {
+ return &DNSKEY{rr.Hdr, rr.Flags, rr.Protocol, rr.Algorithm, rr.PublicKey}
+}
+func (rr *DS) copy() RR {
+ return &DS{rr.Hdr, rr.KeyTag, rr.Algorithm, rr.DigestType, rr.Digest}
+}
+func (rr *EID) copy() RR {
+ return &EID{rr.Hdr, rr.Endpoint}
+}
+func (rr *EUI48) copy() RR {
+ return &EUI48{rr.Hdr, rr.Address}
+}
+func (rr *EUI64) copy() RR {
+ return &EUI64{rr.Hdr, rr.Address}
+}
+func (rr *GID) copy() RR {
+ return &GID{rr.Hdr, rr.Gid}
+}
+func (rr *GPOS) copy() RR {
+ return &GPOS{rr.Hdr, rr.Longitude, rr.Latitude, rr.Altitude}
+}
+func (rr *HINFO) copy() RR {
+ return &HINFO{rr.Hdr, rr.Cpu, rr.Os}
+}
+func (rr *HIP) copy() RR {
+ RendezvousServers := make([]string, len(rr.RendezvousServers))
+ copy(RendezvousServers, rr.RendezvousServers)
+ return &HIP{rr.Hdr, rr.HitLength, rr.PublicKeyAlgorithm, rr.PublicKeyLength, rr.Hit, rr.PublicKey, RendezvousServers}
+}
+func (rr *KX) copy() RR {
+ return &KX{rr.Hdr, rr.Preference, rr.Exchanger}
+}
+func (rr *L32) copy() RR {
+ return &L32{rr.Hdr, rr.Preference, copyIP(rr.Locator32)}
+}
+func (rr *L64) copy() RR {
+ return &L64{rr.Hdr, rr.Preference, rr.Locator64}
+}
+func (rr *LOC) copy() RR {
+ return &LOC{rr.Hdr, rr.Version, rr.Size, rr.HorizPre, rr.VertPre, rr.Latitude, rr.Longitude, rr.Altitude}
+}
+func (rr *LP) copy() RR {
+ return &LP{rr.Hdr, rr.Preference, rr.Fqdn}
+}
+func (rr *MB) copy() RR {
+ return &MB{rr.Hdr, rr.Mb}
+}
+func (rr *MD) copy() RR {
+ return &MD{rr.Hdr, rr.Md}
+}
+func (rr *MF) copy() RR {
+ return &MF{rr.Hdr, rr.Mf}
+}
+func (rr *MG) copy() RR {
+ return &MG{rr.Hdr, rr.Mg}
+}
+func (rr *MINFO) copy() RR {
+ return &MINFO{rr.Hdr, rr.Rmail, rr.Email}
+}
+func (rr *MR) copy() RR {
+ return &MR{rr.Hdr, rr.Mr}
+}
+func (rr *MX) copy() RR {
+ return &MX{rr.Hdr, rr.Preference, rr.Mx}
+}
+func (rr *NAPTR) copy() RR {
+ return &NAPTR{rr.Hdr, rr.Order, rr.Preference, rr.Flags, rr.Service, rr.Regexp, rr.Replacement}
+}
+func (rr *NID) copy() RR {
+ return &NID{rr.Hdr, rr.Preference, rr.NodeID}
+}
+func (rr *NIMLOC) copy() RR {
+ return &NIMLOC{rr.Hdr, rr.Locator}
+}
+func (rr *NINFO) copy() RR {
+ ZSData := make([]string, len(rr.ZSData))
+ copy(ZSData, rr.ZSData)
+ return &NINFO{rr.Hdr, ZSData}
+}
+func (rr *NS) copy() RR {
+ return &NS{rr.Hdr, rr.Ns}
+}
+func (rr *NSAPPTR) copy() RR {
+ return &NSAPPTR{rr.Hdr, rr.Ptr}
+}
+func (rr *NSEC) copy() RR {
+ TypeBitMap := make([]uint16, len(rr.TypeBitMap))
+ copy(TypeBitMap, rr.TypeBitMap)
+ return &NSEC{rr.Hdr, rr.NextDomain, TypeBitMap}
+}
+func (rr *NSEC3) copy() RR {
+ TypeBitMap := make([]uint16, len(rr.TypeBitMap))
+ copy(TypeBitMap, rr.TypeBitMap)
+ return &NSEC3{rr.Hdr, rr.Hash, rr.Flags, rr.Iterations, rr.SaltLength, rr.Salt, rr.HashLength, rr.NextDomain, TypeBitMap}
+}
+func (rr *NSEC3PARAM) copy() RR {
+ return &NSEC3PARAM{rr.Hdr, rr.Hash, rr.Flags, rr.Iterations, rr.SaltLength, rr.Salt}
+}
+func (rr *NULL) copy() RR {
+ return &NULL{rr.Hdr, rr.Data}
+}
+func (rr *OPENPGPKEY) copy() RR {
+ return &OPENPGPKEY{rr.Hdr, rr.PublicKey}
+}
+func (rr *OPT) copy() RR {
+ Option := make([]EDNS0, len(rr.Option))
+ for i, e := range rr.Option {
+ Option[i] = e.copy()
+ }
+ return &OPT{rr.Hdr, Option}
+}
+func (rr *PTR) copy() RR {
+ return &PTR{rr.Hdr, rr.Ptr}
+}
+func (rr *PX) copy() RR {
+ return &PX{rr.Hdr, rr.Preference, rr.Map822, rr.Mapx400}
+}
+func (rr *RFC3597) copy() RR {
+ return &RFC3597{rr.Hdr, rr.Rdata}
+}
+func (rr *RKEY) copy() RR {
+ return &RKEY{rr.Hdr, rr.Flags, rr.Protocol, rr.Algorithm, rr.PublicKey}
+}
+func (rr *RP) copy() RR {
+ return &RP{rr.Hdr, rr.Mbox, rr.Txt}
+}
+func (rr *RRSIG) copy() RR {
+ return &RRSIG{rr.Hdr, rr.TypeCovered, rr.Algorithm, rr.Labels, rr.OrigTtl, rr.Expiration, rr.Inception, rr.KeyTag, rr.SignerName, rr.Signature}
+}
+func (rr *RT) copy() RR {
+ return &RT{rr.Hdr, rr.Preference, rr.Host}
+}
+func (rr *SMIMEA) copy() RR {
+ return &SMIMEA{rr.Hdr, rr.Usage, rr.Selector, rr.MatchingType, rr.Certificate}
+}
+func (rr *SOA) copy() RR {
+ return &SOA{rr.Hdr, rr.Ns, rr.Mbox, rr.Serial, rr.Refresh, rr.Retry, rr.Expire, rr.Minttl}
+}
+func (rr *SPF) copy() RR {
+ Txt := make([]string, len(rr.Txt))
+ copy(Txt, rr.Txt)
+ return &SPF{rr.Hdr, Txt}
+}
+func (rr *SRV) copy() RR {
+ return &SRV{rr.Hdr, rr.Priority, rr.Weight, rr.Port, rr.Target}
+}
+func (rr *SSHFP) copy() RR {
+ return &SSHFP{rr.Hdr, rr.Algorithm, rr.Type, rr.FingerPrint}
+}
+func (rr *TA) copy() RR {
+ return &TA{rr.Hdr, rr.KeyTag, rr.Algorithm, rr.DigestType, rr.Digest}
+}
+func (rr *TALINK) copy() RR {
+ return &TALINK{rr.Hdr, rr.PreviousName, rr.NextName}
+}
+func (rr *TKEY) copy() RR {
+ return &TKEY{rr.Hdr, rr.Algorithm, rr.Inception, rr.Expiration, rr.Mode, rr.Error, rr.KeySize, rr.Key, rr.OtherLen, rr.OtherData}
+}
+func (rr *TLSA) copy() RR {
+ return &TLSA{rr.Hdr, rr.Usage, rr.Selector, rr.MatchingType, rr.Certificate}
+}
+func (rr *TSIG) copy() RR {
+ return &TSIG{rr.Hdr, rr.Algorithm, rr.TimeSigned, rr.Fudge, rr.MACSize, rr.MAC, rr.OrigId, rr.Error, rr.OtherLen, rr.OtherData}
+}
+func (rr *TXT) copy() RR {
+ Txt := make([]string, len(rr.Txt))
+ copy(Txt, rr.Txt)
+ return &TXT{rr.Hdr, Txt}
+}
+func (rr *UID) copy() RR {
+ return &UID{rr.Hdr, rr.Uid}
+}
+func (rr *UINFO) copy() RR {
+ return &UINFO{rr.Hdr, rr.Uinfo}
+}
+func (rr *URI) copy() RR {
+ return &URI{rr.Hdr, rr.Priority, rr.Weight, rr.Target}
+}
+func (rr *X25) copy() RR {
+ return &X25{rr.Hdr, rr.PSDNAddress}
+}
diff --git a/vendor/github.com/syndtr/goleveldb/LICENSE b/vendor/github.com/syndtr/goleveldb/LICENSE
new file mode 100644
index 0000000..4a772d1
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/LICENSE
@@ -0,0 +1,24 @@
+Copyright 2012 Suryandaru Triandana
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/batch.go b/vendor/github.com/syndtr/goleveldb/leveldb/batch.go
new file mode 100644
index 0000000..2259200
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/batch.go
@@ -0,0 +1,349 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "encoding/binary"
+ "fmt"
+ "io"
+
+ "github.com/syndtr/goleveldb/leveldb/errors"
+ "github.com/syndtr/goleveldb/leveldb/memdb"
+ "github.com/syndtr/goleveldb/leveldb/storage"
+)
+
+// ErrBatchCorrupted records reason of batch corruption. This error will be
+// wrapped with errors.ErrCorrupted.
+type ErrBatchCorrupted struct {
+ Reason string
+}
+
+func (e *ErrBatchCorrupted) Error() string {
+ return fmt.Sprintf("leveldb: batch corrupted: %s", e.Reason)
+}
+
+func newErrBatchCorrupted(reason string) error {
+ return errors.NewErrCorrupted(storage.FileDesc{}, &ErrBatchCorrupted{reason})
+}
+
+const (
+ batchHeaderLen = 8 + 4
+ batchGrowRec = 3000
+ batchBufioSize = 16
+)
+
+// BatchReplay wraps basic batch operations.
+type BatchReplay interface {
+ Put(key, value []byte)
+ Delete(key []byte)
+}
+
+type batchIndex struct {
+ keyType keyType
+ keyPos, keyLen int
+ valuePos, valueLen int
+}
+
+func (index batchIndex) k(data []byte) []byte {
+ return data[index.keyPos : index.keyPos+index.keyLen]
+}
+
+func (index batchIndex) v(data []byte) []byte {
+ if index.valueLen != 0 {
+ return data[index.valuePos : index.valuePos+index.valueLen]
+ }
+ return nil
+}
+
+func (index batchIndex) kv(data []byte) (key, value []byte) {
+ return index.k(data), index.v(data)
+}
+
+// Batch is a write batch.
+type Batch struct {
+ data []byte
+ index []batchIndex
+
+ // internalLen is sums of key/value pair length plus 8-bytes internal key.
+ internalLen int
+}
+
+func (b *Batch) grow(n int) {
+ o := len(b.data)
+ if cap(b.data)-o < n {
+ div := 1
+ if len(b.index) > batchGrowRec {
+ div = len(b.index) / batchGrowRec
+ }
+ ndata := make([]byte, o, o+n+o/div)
+ copy(ndata, b.data)
+ b.data = ndata
+ }
+}
+
+func (b *Batch) appendRec(kt keyType, key, value []byte) {
+ n := 1 + binary.MaxVarintLen32 + len(key)
+ if kt == keyTypeVal {
+ n += binary.MaxVarintLen32 + len(value)
+ }
+ b.grow(n)
+ index := batchIndex{keyType: kt}
+ o := len(b.data)
+ data := b.data[:o+n]
+ data[o] = byte(kt)
+ o++
+ o += binary.PutUvarint(data[o:], uint64(len(key)))
+ index.keyPos = o
+ index.keyLen = len(key)
+ o += copy(data[o:], key)
+ if kt == keyTypeVal {
+ o += binary.PutUvarint(data[o:], uint64(len(value)))
+ index.valuePos = o
+ index.valueLen = len(value)
+ o += copy(data[o:], value)
+ }
+ b.data = data[:o]
+ b.index = append(b.index, index)
+ b.internalLen += index.keyLen + index.valueLen + 8
+}
+
+// Put appends 'put operation' of the given key/value pair to the batch.
+// It is safe to modify the contents of the argument after Put returns but not
+// before.
+func (b *Batch) Put(key, value []byte) {
+ b.appendRec(keyTypeVal, key, value)
+}
+
+// Delete appends 'delete operation' of the given key to the batch.
+// It is safe to modify the contents of the argument after Delete returns but
+// not before.
+func (b *Batch) Delete(key []byte) {
+ b.appendRec(keyTypeDel, key, nil)
+}
+
+// Dump dumps batch contents. The returned slice can be loaded into the
+// batch using Load method.
+// The returned slice is not its own copy, so the contents should not be
+// modified.
+func (b *Batch) Dump() []byte {
+ return b.data
+}
+
+// Load loads given slice into the batch. Previous contents of the batch
+// will be discarded.
+// The given slice will not be copied and will be used as batch buffer, so
+// it is not safe to modify the contents of the slice.
+func (b *Batch) Load(data []byte) error {
+ return b.decode(data, -1)
+}
+
+// Replay replays batch contents.
+func (b *Batch) Replay(r BatchReplay) error {
+ for _, index := range b.index {
+ switch index.keyType {
+ case keyTypeVal:
+ r.Put(index.k(b.data), index.v(b.data))
+ case keyTypeDel:
+ r.Delete(index.k(b.data))
+ }
+ }
+ return nil
+}
+
+// Len returns number of records in the batch.
+func (b *Batch) Len() int {
+ return len(b.index)
+}
+
+// Reset resets the batch.
+func (b *Batch) Reset() {
+ b.data = b.data[:0]
+ b.index = b.index[:0]
+ b.internalLen = 0
+}
+
+func (b *Batch) replayInternal(fn func(i int, kt keyType, k, v []byte) error) error {
+ for i, index := range b.index {
+ if err := fn(i, index.keyType, index.k(b.data), index.v(b.data)); err != nil {
+ return err
+ }
+ }
+ return nil
+}
+
+func (b *Batch) append(p *Batch) {
+ ob := len(b.data)
+ oi := len(b.index)
+ b.data = append(b.data, p.data...)
+ b.index = append(b.index, p.index...)
+ b.internalLen += p.internalLen
+
+ // Updating index offset.
+ if ob != 0 {
+ for ; oi < len(b.index); oi++ {
+ index := &b.index[oi]
+ index.keyPos += ob
+ if index.valueLen != 0 {
+ index.valuePos += ob
+ }
+ }
+ }
+}
+
+func (b *Batch) decode(data []byte, expectedLen int) error {
+ b.data = data
+ b.index = b.index[:0]
+ b.internalLen = 0
+ err := decodeBatch(data, func(i int, index batchIndex) error {
+ b.index = append(b.index, index)
+ b.internalLen += index.keyLen + index.valueLen + 8
+ return nil
+ })
+ if err != nil {
+ return err
+ }
+ if expectedLen >= 0 && len(b.index) != expectedLen {
+ return newErrBatchCorrupted(fmt.Sprintf("invalid records length: %d vs %d", expectedLen, len(b.index)))
+ }
+ return nil
+}
+
+func (b *Batch) putMem(seq uint64, mdb *memdb.DB) error {
+ var ik []byte
+ for i, index := range b.index {
+ ik = makeInternalKey(ik, index.k(b.data), seq+uint64(i), index.keyType)
+ if err := mdb.Put(ik, index.v(b.data)); err != nil {
+ return err
+ }
+ }
+ return nil
+}
+
+func (b *Batch) revertMem(seq uint64, mdb *memdb.DB) error {
+ var ik []byte
+ for i, index := range b.index {
+ ik = makeInternalKey(ik, index.k(b.data), seq+uint64(i), index.keyType)
+ if err := mdb.Delete(ik); err != nil {
+ return err
+ }
+ }
+ return nil
+}
+
+func newBatch() interface{} {
+ return &Batch{}
+}
+
+func decodeBatch(data []byte, fn func(i int, index batchIndex) error) error {
+ var index batchIndex
+ for i, o := 0, 0; o < len(data); i++ {
+ // Key type.
+ index.keyType = keyType(data[o])
+ if index.keyType > keyTypeVal {
+ return newErrBatchCorrupted(fmt.Sprintf("bad record: invalid type %#x", uint(index.keyType)))
+ }
+ o++
+
+ // Key.
+ x, n := binary.Uvarint(data[o:])
+ o += n
+ if n <= 0 || o+int(x) > len(data) {
+ return newErrBatchCorrupted("bad record: invalid key length")
+ }
+ index.keyPos = o
+ index.keyLen = int(x)
+ o += index.keyLen
+
+ // Value.
+ if index.keyType == keyTypeVal {
+ x, n = binary.Uvarint(data[o:])
+ o += n
+ if n <= 0 || o+int(x) > len(data) {
+ return newErrBatchCorrupted("bad record: invalid value length")
+ }
+ index.valuePos = o
+ index.valueLen = int(x)
+ o += index.valueLen
+ } else {
+ index.valuePos = 0
+ index.valueLen = 0
+ }
+
+ if err := fn(i, index); err != nil {
+ return err
+ }
+ }
+ return nil
+}
+
+func decodeBatchToMem(data []byte, expectSeq uint64, mdb *memdb.DB) (seq uint64, batchLen int, err error) {
+ seq, batchLen, err = decodeBatchHeader(data)
+ if err != nil {
+ return 0, 0, err
+ }
+ if seq < expectSeq {
+ return 0, 0, newErrBatchCorrupted("invalid sequence number")
+ }
+ data = data[batchHeaderLen:]
+ var ik []byte
+ var decodedLen int
+ err = decodeBatch(data, func(i int, index batchIndex) error {
+ if i >= batchLen {
+ return newErrBatchCorrupted("invalid records length")
+ }
+ ik = makeInternalKey(ik, index.k(data), seq+uint64(i), index.keyType)
+ if err := mdb.Put(ik, index.v(data)); err != nil {
+ return err
+ }
+ decodedLen++
+ return nil
+ })
+ if err == nil && decodedLen != batchLen {
+ err = newErrBatchCorrupted(fmt.Sprintf("invalid records length: %d vs %d", batchLen, decodedLen))
+ }
+ return
+}
+
+func encodeBatchHeader(dst []byte, seq uint64, batchLen int) []byte {
+ dst = ensureBuffer(dst, batchHeaderLen)
+ binary.LittleEndian.PutUint64(dst, seq)
+ binary.LittleEndian.PutUint32(dst[8:], uint32(batchLen))
+ return dst
+}
+
+func decodeBatchHeader(data []byte) (seq uint64, batchLen int, err error) {
+ if len(data) < batchHeaderLen {
+ return 0, 0, newErrBatchCorrupted("too short")
+ }
+
+ seq = binary.LittleEndian.Uint64(data)
+ batchLen = int(binary.LittleEndian.Uint32(data[8:]))
+ if batchLen < 0 {
+ return 0, 0, newErrBatchCorrupted("invalid records length")
+ }
+ return
+}
+
+func batchesLen(batches []*Batch) int {
+ batchLen := 0
+ for _, batch := range batches {
+ batchLen += batch.Len()
+ }
+ return batchLen
+}
+
+func writeBatchesWithHeader(wr io.Writer, batches []*Batch, seq uint64) error {
+ if _, err := wr.Write(encodeBatchHeader(nil, seq, batchesLen(batches))); err != nil {
+ return err
+ }
+ for _, batch := range batches {
+ if _, err := wr.Write(batch.data); err != nil {
+ return err
+ }
+ }
+ return nil
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/cache/cache.go b/vendor/github.com/syndtr/goleveldb/leveldb/cache/cache.go
new file mode 100644
index 0000000..c36ad32
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/cache/cache.go
@@ -0,0 +1,704 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Package cache provides interface and implementation of a cache algorithms.
+package cache
+
+import (
+ "sync"
+ "sync/atomic"
+ "unsafe"
+
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+// Cacher provides interface to implements a caching functionality.
+// An implementation must be safe for concurrent use.
+type Cacher interface {
+ // Capacity returns cache capacity.
+ Capacity() int
+
+ // SetCapacity sets cache capacity.
+ SetCapacity(capacity int)
+
+ // Promote promotes the 'cache node'.
+ Promote(n *Node)
+
+ // Ban evicts the 'cache node' and prevent subsequent 'promote'.
+ Ban(n *Node)
+
+ // Evict evicts the 'cache node'.
+ Evict(n *Node)
+
+ // EvictNS evicts 'cache node' with the given namespace.
+ EvictNS(ns uint64)
+
+ // EvictAll evicts all 'cache node'.
+ EvictAll()
+
+ // Close closes the 'cache tree'
+ Close() error
+}
+
+// Value is a 'cacheable object'. It may implements util.Releaser, if
+// so the the Release method will be called once object is released.
+type Value interface{}
+
+// NamespaceGetter provides convenient wrapper for namespace.
+type NamespaceGetter struct {
+ Cache *Cache
+ NS uint64
+}
+
+// Get simply calls Cache.Get() method.
+func (g *NamespaceGetter) Get(key uint64, setFunc func() (size int, value Value)) *Handle {
+ return g.Cache.Get(g.NS, key, setFunc)
+}
+
+// The hash tables implementation is based on:
+// "Dynamic-Sized Nonblocking Hash Tables", by Yujie Liu,
+// Kunlong Zhang, and Michael Spear.
+// ACM Symposium on Principles of Distributed Computing, Jul 2014.
+
+const (
+ mInitialSize = 1 << 4
+ mOverflowThreshold = 1 << 5
+ mOverflowGrowThreshold = 1 << 7
+)
+
+type mBucket struct {
+ mu sync.Mutex
+ node []*Node
+ frozen bool
+}
+
+func (b *mBucket) freeze() []*Node {
+ b.mu.Lock()
+ defer b.mu.Unlock()
+ if !b.frozen {
+ b.frozen = true
+ }
+ return b.node
+}
+
+func (b *mBucket) get(r *Cache, h *mNode, hash uint32, ns, key uint64, noset bool) (done, added bool, n *Node) {
+ b.mu.Lock()
+
+ if b.frozen {
+ b.mu.Unlock()
+ return
+ }
+
+ // Scan the node.
+ for _, n := range b.node {
+ if n.hash == hash && n.ns == ns && n.key == key {
+ atomic.AddInt32(&n.ref, 1)
+ b.mu.Unlock()
+ return true, false, n
+ }
+ }
+
+ // Get only.
+ if noset {
+ b.mu.Unlock()
+ return true, false, nil
+ }
+
+ // Create node.
+ n = &Node{
+ r: r,
+ hash: hash,
+ ns: ns,
+ key: key,
+ ref: 1,
+ }
+ // Add node to bucket.
+ b.node = append(b.node, n)
+ bLen := len(b.node)
+ b.mu.Unlock()
+
+ // Update counter.
+ grow := atomic.AddInt32(&r.nodes, 1) >= h.growThreshold
+ if bLen > mOverflowThreshold {
+ grow = grow || atomic.AddInt32(&h.overflow, 1) >= mOverflowGrowThreshold
+ }
+
+ // Grow.
+ if grow && atomic.CompareAndSwapInt32(&h.resizeInProgess, 0, 1) {
+ nhLen := len(h.buckets) << 1
+ nh := &mNode{
+ buckets: make([]unsafe.Pointer, nhLen),
+ mask: uint32(nhLen) - 1,
+ pred: unsafe.Pointer(h),
+ growThreshold: int32(nhLen * mOverflowThreshold),
+ shrinkThreshold: int32(nhLen >> 1),
+ }
+ ok := atomic.CompareAndSwapPointer(&r.mHead, unsafe.Pointer(h), unsafe.Pointer(nh))
+ if !ok {
+ panic("BUG: failed swapping head")
+ }
+ go nh.initBuckets()
+ }
+
+ return true, true, n
+}
+
+func (b *mBucket) delete(r *Cache, h *mNode, hash uint32, ns, key uint64) (done, deleted bool) {
+ b.mu.Lock()
+
+ if b.frozen {
+ b.mu.Unlock()
+ return
+ }
+
+ // Scan the node.
+ var (
+ n *Node
+ bLen int
+ )
+ for i := range b.node {
+ n = b.node[i]
+ if n.ns == ns && n.key == key {
+ if atomic.LoadInt32(&n.ref) == 0 {
+ deleted = true
+
+ // Call releaser.
+ if n.value != nil {
+ if r, ok := n.value.(util.Releaser); ok {
+ r.Release()
+ }
+ n.value = nil
+ }
+
+ // Remove node from bucket.
+ b.node = append(b.node[:i], b.node[i+1:]...)
+ bLen = len(b.node)
+ }
+ break
+ }
+ }
+ b.mu.Unlock()
+
+ if deleted {
+ // Call OnDel.
+ for _, f := range n.onDel {
+ f()
+ }
+
+ // Update counter.
+ atomic.AddInt32(&r.size, int32(n.size)*-1)
+ shrink := atomic.AddInt32(&r.nodes, -1) < h.shrinkThreshold
+ if bLen >= mOverflowThreshold {
+ atomic.AddInt32(&h.overflow, -1)
+ }
+
+ // Shrink.
+ if shrink && len(h.buckets) > mInitialSize && atomic.CompareAndSwapInt32(&h.resizeInProgess, 0, 1) {
+ nhLen := len(h.buckets) >> 1
+ nh := &mNode{
+ buckets: make([]unsafe.Pointer, nhLen),
+ mask: uint32(nhLen) - 1,
+ pred: unsafe.Pointer(h),
+ growThreshold: int32(nhLen * mOverflowThreshold),
+ shrinkThreshold: int32(nhLen >> 1),
+ }
+ ok := atomic.CompareAndSwapPointer(&r.mHead, unsafe.Pointer(h), unsafe.Pointer(nh))
+ if !ok {
+ panic("BUG: failed swapping head")
+ }
+ go nh.initBuckets()
+ }
+ }
+
+ return true, deleted
+}
+
+type mNode struct {
+ buckets []unsafe.Pointer // []*mBucket
+ mask uint32
+ pred unsafe.Pointer // *mNode
+ resizeInProgess int32
+
+ overflow int32
+ growThreshold int32
+ shrinkThreshold int32
+}
+
+func (n *mNode) initBucket(i uint32) *mBucket {
+ if b := (*mBucket)(atomic.LoadPointer(&n.buckets[i])); b != nil {
+ return b
+ }
+
+ p := (*mNode)(atomic.LoadPointer(&n.pred))
+ if p != nil {
+ var node []*Node
+ if n.mask > p.mask {
+ // Grow.
+ pb := (*mBucket)(atomic.LoadPointer(&p.buckets[i&p.mask]))
+ if pb == nil {
+ pb = p.initBucket(i & p.mask)
+ }
+ m := pb.freeze()
+ // Split nodes.
+ for _, x := range m {
+ if x.hash&n.mask == i {
+ node = append(node, x)
+ }
+ }
+ } else {
+ // Shrink.
+ pb0 := (*mBucket)(atomic.LoadPointer(&p.buckets[i]))
+ if pb0 == nil {
+ pb0 = p.initBucket(i)
+ }
+ pb1 := (*mBucket)(atomic.LoadPointer(&p.buckets[i+uint32(len(n.buckets))]))
+ if pb1 == nil {
+ pb1 = p.initBucket(i + uint32(len(n.buckets)))
+ }
+ m0 := pb0.freeze()
+ m1 := pb1.freeze()
+ // Merge nodes.
+ node = make([]*Node, 0, len(m0)+len(m1))
+ node = append(node, m0...)
+ node = append(node, m1...)
+ }
+ b := &mBucket{node: node}
+ if atomic.CompareAndSwapPointer(&n.buckets[i], nil, unsafe.Pointer(b)) {
+ if len(node) > mOverflowThreshold {
+ atomic.AddInt32(&n.overflow, int32(len(node)-mOverflowThreshold))
+ }
+ return b
+ }
+ }
+
+ return (*mBucket)(atomic.LoadPointer(&n.buckets[i]))
+}
+
+func (n *mNode) initBuckets() {
+ for i := range n.buckets {
+ n.initBucket(uint32(i))
+ }
+ atomic.StorePointer(&n.pred, nil)
+}
+
+// Cache is a 'cache map'.
+type Cache struct {
+ mu sync.RWMutex
+ mHead unsafe.Pointer // *mNode
+ nodes int32
+ size int32
+ cacher Cacher
+ closed bool
+}
+
+// NewCache creates a new 'cache map'. The cacher is optional and
+// may be nil.
+func NewCache(cacher Cacher) *Cache {
+ h := &mNode{
+ buckets: make([]unsafe.Pointer, mInitialSize),
+ mask: mInitialSize - 1,
+ growThreshold: int32(mInitialSize * mOverflowThreshold),
+ shrinkThreshold: 0,
+ }
+ for i := range h.buckets {
+ h.buckets[i] = unsafe.Pointer(&mBucket{})
+ }
+ r := &Cache{
+ mHead: unsafe.Pointer(h),
+ cacher: cacher,
+ }
+ return r
+}
+
+func (r *Cache) getBucket(hash uint32) (*mNode, *mBucket) {
+ h := (*mNode)(atomic.LoadPointer(&r.mHead))
+ i := hash & h.mask
+ b := (*mBucket)(atomic.LoadPointer(&h.buckets[i]))
+ if b == nil {
+ b = h.initBucket(i)
+ }
+ return h, b
+}
+
+func (r *Cache) delete(n *Node) bool {
+ for {
+ h, b := r.getBucket(n.hash)
+ done, deleted := b.delete(r, h, n.hash, n.ns, n.key)
+ if done {
+ return deleted
+ }
+ }
+}
+
+// Nodes returns number of 'cache node' in the map.
+func (r *Cache) Nodes() int {
+ return int(atomic.LoadInt32(&r.nodes))
+}
+
+// Size returns sums of 'cache node' size in the map.
+func (r *Cache) Size() int {
+ return int(atomic.LoadInt32(&r.size))
+}
+
+// Capacity returns cache capacity.
+func (r *Cache) Capacity() int {
+ if r.cacher == nil {
+ return 0
+ }
+ return r.cacher.Capacity()
+}
+
+// SetCapacity sets cache capacity.
+func (r *Cache) SetCapacity(capacity int) {
+ if r.cacher != nil {
+ r.cacher.SetCapacity(capacity)
+ }
+}
+
+// Get gets 'cache node' with the given namespace and key.
+// If cache node is not found and setFunc is not nil, Get will atomically creates
+// the 'cache node' by calling setFunc. Otherwise Get will returns nil.
+//
+// The returned 'cache handle' should be released after use by calling Release
+// method.
+func (r *Cache) Get(ns, key uint64, setFunc func() (size int, value Value)) *Handle {
+ r.mu.RLock()
+ defer r.mu.RUnlock()
+ if r.closed {
+ return nil
+ }
+
+ hash := murmur32(ns, key, 0xf00)
+ for {
+ h, b := r.getBucket(hash)
+ done, _, n := b.get(r, h, hash, ns, key, setFunc == nil)
+ if done {
+ if n != nil {
+ n.mu.Lock()
+ if n.value == nil {
+ if setFunc == nil {
+ n.mu.Unlock()
+ n.unref()
+ return nil
+ }
+
+ n.size, n.value = setFunc()
+ if n.value == nil {
+ n.size = 0
+ n.mu.Unlock()
+ n.unref()
+ return nil
+ }
+ atomic.AddInt32(&r.size, int32(n.size))
+ }
+ n.mu.Unlock()
+ if r.cacher != nil {
+ r.cacher.Promote(n)
+ }
+ return &Handle{unsafe.Pointer(n)}
+ }
+
+ break
+ }
+ }
+ return nil
+}
+
+// Delete removes and ban 'cache node' with the given namespace and key.
+// A banned 'cache node' will never inserted into the 'cache tree'. Ban
+// only attributed to the particular 'cache node', so when a 'cache node'
+// is recreated it will not be banned.
+//
+// If onDel is not nil, then it will be executed if such 'cache node'
+// doesn't exist or once the 'cache node' is released.
+//
+// Delete return true is such 'cache node' exist.
+func (r *Cache) Delete(ns, key uint64, onDel func()) bool {
+ r.mu.RLock()
+ defer r.mu.RUnlock()
+ if r.closed {
+ return false
+ }
+
+ hash := murmur32(ns, key, 0xf00)
+ for {
+ h, b := r.getBucket(hash)
+ done, _, n := b.get(r, h, hash, ns, key, true)
+ if done {
+ if n != nil {
+ if onDel != nil {
+ n.mu.Lock()
+ n.onDel = append(n.onDel, onDel)
+ n.mu.Unlock()
+ }
+ if r.cacher != nil {
+ r.cacher.Ban(n)
+ }
+ n.unref()
+ return true
+ }
+
+ break
+ }
+ }
+
+ if onDel != nil {
+ onDel()
+ }
+
+ return false
+}
+
+// Evict evicts 'cache node' with the given namespace and key. This will
+// simply call Cacher.Evict.
+//
+// Evict return true is such 'cache node' exist.
+func (r *Cache) Evict(ns, key uint64) bool {
+ r.mu.RLock()
+ defer r.mu.RUnlock()
+ if r.closed {
+ return false
+ }
+
+ hash := murmur32(ns, key, 0xf00)
+ for {
+ h, b := r.getBucket(hash)
+ done, _, n := b.get(r, h, hash, ns, key, true)
+ if done {
+ if n != nil {
+ if r.cacher != nil {
+ r.cacher.Evict(n)
+ }
+ n.unref()
+ return true
+ }
+
+ break
+ }
+ }
+
+ return false
+}
+
+// EvictNS evicts 'cache node' with the given namespace. This will
+// simply call Cacher.EvictNS.
+func (r *Cache) EvictNS(ns uint64) {
+ r.mu.RLock()
+ defer r.mu.RUnlock()
+ if r.closed {
+ return
+ }
+
+ if r.cacher != nil {
+ r.cacher.EvictNS(ns)
+ }
+}
+
+// EvictAll evicts all 'cache node'. This will simply call Cacher.EvictAll.
+func (r *Cache) EvictAll() {
+ r.mu.RLock()
+ defer r.mu.RUnlock()
+ if r.closed {
+ return
+ }
+
+ if r.cacher != nil {
+ r.cacher.EvictAll()
+ }
+}
+
+// Close closes the 'cache map' and forcefully releases all 'cache node'.
+func (r *Cache) Close() error {
+ r.mu.Lock()
+ if !r.closed {
+ r.closed = true
+
+ h := (*mNode)(r.mHead)
+ h.initBuckets()
+
+ for i := range h.buckets {
+ b := (*mBucket)(h.buckets[i])
+ for _, n := range b.node {
+ // Call releaser.
+ if n.value != nil {
+ if r, ok := n.value.(util.Releaser); ok {
+ r.Release()
+ }
+ n.value = nil
+ }
+
+ // Call OnDel.
+ for _, f := range n.onDel {
+ f()
+ }
+ n.onDel = nil
+ }
+ }
+ }
+ r.mu.Unlock()
+
+ // Avoid deadlock.
+ if r.cacher != nil {
+ if err := r.cacher.Close(); err != nil {
+ return err
+ }
+ }
+ return nil
+}
+
+// CloseWeak closes the 'cache map' and evict all 'cache node' from cacher, but
+// unlike Close it doesn't forcefully releases 'cache node'.
+func (r *Cache) CloseWeak() error {
+ r.mu.Lock()
+ if !r.closed {
+ r.closed = true
+ }
+ r.mu.Unlock()
+
+ // Avoid deadlock.
+ if r.cacher != nil {
+ r.cacher.EvictAll()
+ if err := r.cacher.Close(); err != nil {
+ return err
+ }
+ }
+ return nil
+}
+
+// Node is a 'cache node'.
+type Node struct {
+ r *Cache
+
+ hash uint32
+ ns, key uint64
+
+ mu sync.Mutex
+ size int
+ value Value
+
+ ref int32
+ onDel []func()
+
+ CacheData unsafe.Pointer
+}
+
+// NS returns this 'cache node' namespace.
+func (n *Node) NS() uint64 {
+ return n.ns
+}
+
+// Key returns this 'cache node' key.
+func (n *Node) Key() uint64 {
+ return n.key
+}
+
+// Size returns this 'cache node' size.
+func (n *Node) Size() int {
+ return n.size
+}
+
+// Value returns this 'cache node' value.
+func (n *Node) Value() Value {
+ return n.value
+}
+
+// Ref returns this 'cache node' ref counter.
+func (n *Node) Ref() int32 {
+ return atomic.LoadInt32(&n.ref)
+}
+
+// GetHandle returns an handle for this 'cache node'.
+func (n *Node) GetHandle() *Handle {
+ if atomic.AddInt32(&n.ref, 1) <= 1 {
+ panic("BUG: Node.GetHandle on zero ref")
+ }
+ return &Handle{unsafe.Pointer(n)}
+}
+
+func (n *Node) unref() {
+ if atomic.AddInt32(&n.ref, -1) == 0 {
+ n.r.delete(n)
+ }
+}
+
+func (n *Node) unrefLocked() {
+ if atomic.AddInt32(&n.ref, -1) == 0 {
+ n.r.mu.RLock()
+ if !n.r.closed {
+ n.r.delete(n)
+ }
+ n.r.mu.RUnlock()
+ }
+}
+
+// Handle is a 'cache handle' of a 'cache node'.
+type Handle struct {
+ n unsafe.Pointer // *Node
+}
+
+// Value returns the value of the 'cache node'.
+func (h *Handle) Value() Value {
+ n := (*Node)(atomic.LoadPointer(&h.n))
+ if n != nil {
+ return n.value
+ }
+ return nil
+}
+
+// Release releases this 'cache handle'.
+// It is safe to call release multiple times.
+func (h *Handle) Release() {
+ nPtr := atomic.LoadPointer(&h.n)
+ if nPtr != nil && atomic.CompareAndSwapPointer(&h.n, nPtr, nil) {
+ n := (*Node)(nPtr)
+ n.unrefLocked()
+ }
+}
+
+func murmur32(ns, key uint64, seed uint32) uint32 {
+ const (
+ m = uint32(0x5bd1e995)
+ r = 24
+ )
+
+ k1 := uint32(ns >> 32)
+ k2 := uint32(ns)
+ k3 := uint32(key >> 32)
+ k4 := uint32(key)
+
+ k1 *= m
+ k1 ^= k1 >> r
+ k1 *= m
+
+ k2 *= m
+ k2 ^= k2 >> r
+ k2 *= m
+
+ k3 *= m
+ k3 ^= k3 >> r
+ k3 *= m
+
+ k4 *= m
+ k4 ^= k4 >> r
+ k4 *= m
+
+ h := seed
+
+ h *= m
+ h ^= k1
+ h *= m
+ h ^= k2
+ h *= m
+ h ^= k3
+ h *= m
+ h ^= k4
+
+ h ^= h >> 13
+ h *= m
+ h ^= h >> 15
+
+ return h
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/cache/lru.go b/vendor/github.com/syndtr/goleveldb/leveldb/cache/lru.go
new file mode 100644
index 0000000..d9a84cd
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/cache/lru.go
@@ -0,0 +1,195 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package cache
+
+import (
+ "sync"
+ "unsafe"
+)
+
+type lruNode struct {
+ n *Node
+ h *Handle
+ ban bool
+
+ next, prev *lruNode
+}
+
+func (n *lruNode) insert(at *lruNode) {
+ x := at.next
+ at.next = n
+ n.prev = at
+ n.next = x
+ x.prev = n
+}
+
+func (n *lruNode) remove() {
+ if n.prev != nil {
+ n.prev.next = n.next
+ n.next.prev = n.prev
+ n.prev = nil
+ n.next = nil
+ } else {
+ panic("BUG: removing removed node")
+ }
+}
+
+type lru struct {
+ mu sync.Mutex
+ capacity int
+ used int
+ recent lruNode
+}
+
+func (r *lru) reset() {
+ r.recent.next = &r.recent
+ r.recent.prev = &r.recent
+ r.used = 0
+}
+
+func (r *lru) Capacity() int {
+ r.mu.Lock()
+ defer r.mu.Unlock()
+ return r.capacity
+}
+
+func (r *lru) SetCapacity(capacity int) {
+ var evicted []*lruNode
+
+ r.mu.Lock()
+ r.capacity = capacity
+ for r.used > r.capacity {
+ rn := r.recent.prev
+ if rn == nil {
+ panic("BUG: invalid LRU used or capacity counter")
+ }
+ rn.remove()
+ rn.n.CacheData = nil
+ r.used -= rn.n.Size()
+ evicted = append(evicted, rn)
+ }
+ r.mu.Unlock()
+
+ for _, rn := range evicted {
+ rn.h.Release()
+ }
+}
+
+func (r *lru) Promote(n *Node) {
+ var evicted []*lruNode
+
+ r.mu.Lock()
+ if n.CacheData == nil {
+ if n.Size() <= r.capacity {
+ rn := &lruNode{n: n, h: n.GetHandle()}
+ rn.insert(&r.recent)
+ n.CacheData = unsafe.Pointer(rn)
+ r.used += n.Size()
+
+ for r.used > r.capacity {
+ rn := r.recent.prev
+ if rn == nil {
+ panic("BUG: invalid LRU used or capacity counter")
+ }
+ rn.remove()
+ rn.n.CacheData = nil
+ r.used -= rn.n.Size()
+ evicted = append(evicted, rn)
+ }
+ }
+ } else {
+ rn := (*lruNode)(n.CacheData)
+ if !rn.ban {
+ rn.remove()
+ rn.insert(&r.recent)
+ }
+ }
+ r.mu.Unlock()
+
+ for _, rn := range evicted {
+ rn.h.Release()
+ }
+}
+
+func (r *lru) Ban(n *Node) {
+ r.mu.Lock()
+ if n.CacheData == nil {
+ n.CacheData = unsafe.Pointer(&lruNode{n: n, ban: true})
+ } else {
+ rn := (*lruNode)(n.CacheData)
+ if !rn.ban {
+ rn.remove()
+ rn.ban = true
+ r.used -= rn.n.Size()
+ r.mu.Unlock()
+
+ rn.h.Release()
+ rn.h = nil
+ return
+ }
+ }
+ r.mu.Unlock()
+}
+
+func (r *lru) Evict(n *Node) {
+ r.mu.Lock()
+ rn := (*lruNode)(n.CacheData)
+ if rn == nil || rn.ban {
+ r.mu.Unlock()
+ return
+ }
+ n.CacheData = nil
+ r.mu.Unlock()
+
+ rn.h.Release()
+}
+
+func (r *lru) EvictNS(ns uint64) {
+ var evicted []*lruNode
+
+ r.mu.Lock()
+ for e := r.recent.prev; e != &r.recent; {
+ rn := e
+ e = e.prev
+ if rn.n.NS() == ns {
+ rn.remove()
+ rn.n.CacheData = nil
+ r.used -= rn.n.Size()
+ evicted = append(evicted, rn)
+ }
+ }
+ r.mu.Unlock()
+
+ for _, rn := range evicted {
+ rn.h.Release()
+ }
+}
+
+func (r *lru) EvictAll() {
+ r.mu.Lock()
+ back := r.recent.prev
+ for rn := back; rn != &r.recent; rn = rn.prev {
+ rn.n.CacheData = nil
+ }
+ r.reset()
+ r.mu.Unlock()
+
+ for rn := back; rn != &r.recent; rn = rn.prev {
+ rn.h.Release()
+ }
+}
+
+func (r *lru) Close() error {
+ return nil
+}
+
+// NewLRU create a new LRU-cache.
+func NewLRU(capacity int) Cacher {
+ r := &lru{capacity: capacity}
+ r.reset()
+ return r
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/comparer.go b/vendor/github.com/syndtr/goleveldb/leveldb/comparer.go
new file mode 100644
index 0000000..448402b
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/comparer.go
@@ -0,0 +1,67 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "github.com/syndtr/goleveldb/leveldb/comparer"
+)
+
+type iComparer struct {
+ ucmp comparer.Comparer
+}
+
+func (icmp *iComparer) uName() string {
+ return icmp.ucmp.Name()
+}
+
+func (icmp *iComparer) uCompare(a, b []byte) int {
+ return icmp.ucmp.Compare(a, b)
+}
+
+func (icmp *iComparer) uSeparator(dst, a, b []byte) []byte {
+ return icmp.ucmp.Separator(dst, a, b)
+}
+
+func (icmp *iComparer) uSuccessor(dst, b []byte) []byte {
+ return icmp.ucmp.Successor(dst, b)
+}
+
+func (icmp *iComparer) Name() string {
+ return icmp.uName()
+}
+
+func (icmp *iComparer) Compare(a, b []byte) int {
+ x := icmp.uCompare(internalKey(a).ukey(), internalKey(b).ukey())
+ if x == 0 {
+ if m, n := internalKey(a).num(), internalKey(b).num(); m > n {
+ return -1
+ } else if m < n {
+ return 1
+ }
+ }
+ return x
+}
+
+func (icmp *iComparer) Separator(dst, a, b []byte) []byte {
+ ua, ub := internalKey(a).ukey(), internalKey(b).ukey()
+ dst = icmp.uSeparator(dst, ua, ub)
+ if dst != nil && len(dst) < len(ua) && icmp.uCompare(ua, dst) < 0 {
+ // Append earliest possible number.
+ return append(dst, keyMaxNumBytes...)
+ }
+ return nil
+}
+
+func (icmp *iComparer) Successor(dst, b []byte) []byte {
+ ub := internalKey(b).ukey()
+ dst = icmp.uSuccessor(dst, ub)
+ if dst != nil && len(dst) < len(ub) && icmp.uCompare(ub, dst) < 0 {
+ // Append earliest possible number.
+ return append(dst, keyMaxNumBytes...)
+ }
+ return nil
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/comparer/bytes_comparer.go b/vendor/github.com/syndtr/goleveldb/leveldb/comparer/bytes_comparer.go
new file mode 100644
index 0000000..abf9fb6
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/comparer/bytes_comparer.go
@@ -0,0 +1,51 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package comparer
+
+import "bytes"
+
+type bytesComparer struct{}
+
+func (bytesComparer) Compare(a, b []byte) int {
+ return bytes.Compare(a, b)
+}
+
+func (bytesComparer) Name() string {
+ return "leveldb.BytewiseComparator"
+}
+
+func (bytesComparer) Separator(dst, a, b []byte) []byte {
+ i, n := 0, len(a)
+ if n > len(b) {
+ n = len(b)
+ }
+ for ; i < n && a[i] == b[i]; i++ {
+ }
+ if i >= n {
+ // Do not shorten if one string is a prefix of the other
+ } else if c := a[i]; c < 0xff && c+1 < b[i] {
+ dst = append(dst, a[:i+1]...)
+ dst[len(dst)-1]++
+ return dst
+ }
+ return nil
+}
+
+func (bytesComparer) Successor(dst, b []byte) []byte {
+ for i, c := range b {
+ if c != 0xff {
+ dst = append(dst, b[:i+1]...)
+ dst[len(dst)-1]++
+ return dst
+ }
+ }
+ return nil
+}
+
+// DefaultComparer are default implementation of the Comparer interface.
+// It uses the natural ordering, consistent with bytes.Compare.
+var DefaultComparer = bytesComparer{}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/comparer/comparer.go b/vendor/github.com/syndtr/goleveldb/leveldb/comparer/comparer.go
new file mode 100644
index 0000000..2c522db
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/comparer/comparer.go
@@ -0,0 +1,57 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Package comparer provides interface and implementation for ordering
+// sets of data.
+package comparer
+
+// BasicComparer is the interface that wraps the basic Compare method.
+type BasicComparer interface {
+ // Compare returns -1, 0, or +1 depending on whether a is 'less than',
+ // 'equal to' or 'greater than' b. The two arguments can only be 'equal'
+ // if their contents are exactly equal. Furthermore, the empty slice
+ // must be 'less than' any non-empty slice.
+ Compare(a, b []byte) int
+}
+
+// Comparer defines a total ordering over the space of []byte keys: a 'less
+// than' relationship.
+type Comparer interface {
+ BasicComparer
+
+ // Name returns name of the comparer.
+ //
+ // The Level-DB on-disk format stores the comparer name, and opening a
+ // database with a different comparer from the one it was created with
+ // will result in an error.
+ //
+ // An implementation to a new name whenever the comparer implementation
+ // changes in a way that will cause the relative ordering of any two keys
+ // to change.
+ //
+ // Names starting with "leveldb." are reserved and should not be used
+ // by any users of this package.
+ Name() string
+
+ // Bellow are advanced functions used to reduce the space requirements
+ // for internal data structures such as index blocks.
+
+ // Separator appends a sequence of bytes x to dst such that a <= x && x < b,
+ // where 'less than' is consistent with Compare. An implementation should
+ // return nil if x equal to a.
+ //
+ // Either contents of a or b should not by any means modified. Doing so
+ // may cause corruption on the internal state.
+ Separator(dst, a, b []byte) []byte
+
+ // Successor appends a sequence of bytes x to dst such that x >= b, where
+ // 'less than' is consistent with Compare. An implementation should return
+ // nil if x equal to b.
+ //
+ // Contents of b should not by any means modified. Doing so may cause
+ // corruption on the internal state.
+ Successor(dst, b []byte) []byte
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/db.go b/vendor/github.com/syndtr/goleveldb/leveldb/db.go
new file mode 100644
index 0000000..90fedf7
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/db.go
@@ -0,0 +1,1179 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "container/list"
+ "fmt"
+ "io"
+ "os"
+ "runtime"
+ "strings"
+ "sync"
+ "sync/atomic"
+ "time"
+
+ "github.com/syndtr/goleveldb/leveldb/errors"
+ "github.com/syndtr/goleveldb/leveldb/iterator"
+ "github.com/syndtr/goleveldb/leveldb/journal"
+ "github.com/syndtr/goleveldb/leveldb/memdb"
+ "github.com/syndtr/goleveldb/leveldb/opt"
+ "github.com/syndtr/goleveldb/leveldb/storage"
+ "github.com/syndtr/goleveldb/leveldb/table"
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+// DB is a LevelDB database.
+type DB struct {
+ // Need 64-bit alignment.
+ seq uint64
+
+ // Stats. Need 64-bit alignment.
+ cWriteDelay int64 // The cumulative duration of write delays
+ cWriteDelayN int32 // The cumulative number of write delays
+ inWritePaused int32 // The indicator whether write operation is paused by compaction
+ aliveSnaps, aliveIters int32
+
+ // Session.
+ s *session
+
+ // MemDB.
+ memMu sync.RWMutex
+ memPool chan *memdb.DB
+ mem, frozenMem *memDB
+ journal *journal.Writer
+ journalWriter storage.Writer
+ journalFd storage.FileDesc
+ frozenJournalFd storage.FileDesc
+ frozenSeq uint64
+
+ // Snapshot.
+ snapsMu sync.Mutex
+ snapsList *list.List
+
+ // Write.
+ batchPool sync.Pool
+ writeMergeC chan writeMerge
+ writeMergedC chan bool
+ writeLockC chan struct{}
+ writeAckC chan error
+ writeDelay time.Duration
+ writeDelayN int
+ tr *Transaction
+
+ // Compaction.
+ compCommitLk sync.Mutex
+ tcompCmdC chan cCmd
+ tcompPauseC chan chan<- struct{}
+ mcompCmdC chan cCmd
+ compErrC chan error
+ compPerErrC chan error
+ compErrSetC chan error
+ compWriteLocking bool
+ compStats cStats
+ memdbMaxLevel int // For testing.
+
+ // Close.
+ closeW sync.WaitGroup
+ closeC chan struct{}
+ closed uint32
+ closer io.Closer
+}
+
+func openDB(s *session) (*DB, error) {
+ s.log("db@open opening")
+ start := time.Now()
+ db := &DB{
+ s: s,
+ // Initial sequence
+ seq: s.stSeqNum,
+ // MemDB
+ memPool: make(chan *memdb.DB, 1),
+ // Snapshot
+ snapsList: list.New(),
+ // Write
+ batchPool: sync.Pool{New: newBatch},
+ writeMergeC: make(chan writeMerge),
+ writeMergedC: make(chan bool),
+ writeLockC: make(chan struct{}, 1),
+ writeAckC: make(chan error),
+ // Compaction
+ tcompCmdC: make(chan cCmd),
+ tcompPauseC: make(chan chan<- struct{}),
+ mcompCmdC: make(chan cCmd),
+ compErrC: make(chan error),
+ compPerErrC: make(chan error),
+ compErrSetC: make(chan error),
+ // Close
+ closeC: make(chan struct{}),
+ }
+
+ // Read-only mode.
+ readOnly := s.o.GetReadOnly()
+
+ if readOnly {
+ // Recover journals (read-only mode).
+ if err := db.recoverJournalRO(); err != nil {
+ return nil, err
+ }
+ } else {
+ // Recover journals.
+ if err := db.recoverJournal(); err != nil {
+ return nil, err
+ }
+
+ // Remove any obsolete files.
+ if err := db.checkAndCleanFiles(); err != nil {
+ // Close journal.
+ if db.journal != nil {
+ db.journal.Close()
+ db.journalWriter.Close()
+ }
+ return nil, err
+ }
+
+ }
+
+ // Doesn't need to be included in the wait group.
+ go db.compactionError()
+ go db.mpoolDrain()
+
+ if readOnly {
+ db.SetReadOnly()
+ } else {
+ db.closeW.Add(2)
+ go db.tCompaction()
+ go db.mCompaction()
+ // go db.jWriter()
+ }
+
+ s.logf("db@open done T·%v", time.Since(start))
+
+ runtime.SetFinalizer(db, (*DB).Close)
+ return db, nil
+}
+
+// Open opens or creates a DB for the given storage.
+// The DB will be created if not exist, unless ErrorIfMissing is true.
+// Also, if ErrorIfExist is true and the DB exist Open will returns
+// os.ErrExist error.
+//
+// Open will return an error with type of ErrCorrupted if corruption
+// detected in the DB. Use errors.IsCorrupted to test whether an error is
+// due to corruption. Corrupted DB can be recovered with Recover function.
+//
+// The returned DB instance is safe for concurrent use.
+// The DB must be closed after use, by calling Close method.
+func Open(stor storage.Storage, o *opt.Options) (db *DB, err error) {
+ s, err := newSession(stor, o)
+ if err != nil {
+ return
+ }
+ defer func() {
+ if err != nil {
+ s.close()
+ s.release()
+ }
+ }()
+
+ err = s.recover()
+ if err != nil {
+ if !os.IsNotExist(err) || s.o.GetErrorIfMissing() || s.o.GetReadOnly() {
+ return
+ }
+ err = s.create()
+ if err != nil {
+ return
+ }
+ } else if s.o.GetErrorIfExist() {
+ err = os.ErrExist
+ return
+ }
+
+ return openDB(s)
+}
+
+// OpenFile opens or creates a DB for the given path.
+// The DB will be created if not exist, unless ErrorIfMissing is true.
+// Also, if ErrorIfExist is true and the DB exist OpenFile will returns
+// os.ErrExist error.
+//
+// OpenFile uses standard file-system backed storage implementation as
+// described in the leveldb/storage package.
+//
+// OpenFile will return an error with type of ErrCorrupted if corruption
+// detected in the DB. Use errors.IsCorrupted to test whether an error is
+// due to corruption. Corrupted DB can be recovered with Recover function.
+//
+// The returned DB instance is safe for concurrent use.
+// The DB must be closed after use, by calling Close method.
+func OpenFile(path string, o *opt.Options) (db *DB, err error) {
+ stor, err := storage.OpenFile(path, o.GetReadOnly())
+ if err != nil {
+ return
+ }
+ db, err = Open(stor, o)
+ if err != nil {
+ stor.Close()
+ } else {
+ db.closer = stor
+ }
+ return
+}
+
+// Recover recovers and opens a DB with missing or corrupted manifest files
+// for the given storage. It will ignore any manifest files, valid or not.
+// The DB must already exist or it will returns an error.
+// Also, Recover will ignore ErrorIfMissing and ErrorIfExist options.
+//
+// The returned DB instance is safe for concurrent use.
+// The DB must be closed after use, by calling Close method.
+func Recover(stor storage.Storage, o *opt.Options) (db *DB, err error) {
+ s, err := newSession(stor, o)
+ if err != nil {
+ return
+ }
+ defer func() {
+ if err != nil {
+ s.close()
+ s.release()
+ }
+ }()
+
+ err = recoverTable(s, o)
+ if err != nil {
+ return
+ }
+ return openDB(s)
+}
+
+// RecoverFile recovers and opens a DB with missing or corrupted manifest files
+// for the given path. It will ignore any manifest files, valid or not.
+// The DB must already exist or it will returns an error.
+// Also, Recover will ignore ErrorIfMissing and ErrorIfExist options.
+//
+// RecoverFile uses standard file-system backed storage implementation as described
+// in the leveldb/storage package.
+//
+// The returned DB instance is safe for concurrent use.
+// The DB must be closed after use, by calling Close method.
+func RecoverFile(path string, o *opt.Options) (db *DB, err error) {
+ stor, err := storage.OpenFile(path, false)
+ if err != nil {
+ return
+ }
+ db, err = Recover(stor, o)
+ if err != nil {
+ stor.Close()
+ } else {
+ db.closer = stor
+ }
+ return
+}
+
+func recoverTable(s *session, o *opt.Options) error {
+ o = dupOptions(o)
+ // Mask StrictReader, lets StrictRecovery doing its job.
+ o.Strict &= ^opt.StrictReader
+
+ // Get all tables and sort it by file number.
+ fds, err := s.stor.List(storage.TypeTable)
+ if err != nil {
+ return err
+ }
+ sortFds(fds)
+
+ var (
+ maxSeq uint64
+ recoveredKey, goodKey, corruptedKey, corruptedBlock, droppedTable int
+
+ // We will drop corrupted table.
+ strict = o.GetStrict(opt.StrictRecovery)
+ noSync = o.GetNoSync()
+
+ rec = &sessionRecord{}
+ bpool = util.NewBufferPool(o.GetBlockSize() + 5)
+ )
+ buildTable := func(iter iterator.Iterator) (tmpFd storage.FileDesc, size int64, err error) {
+ tmpFd = s.newTemp()
+ writer, err := s.stor.Create(tmpFd)
+ if err != nil {
+ return
+ }
+ defer func() {
+ writer.Close()
+ if err != nil {
+ s.stor.Remove(tmpFd)
+ tmpFd = storage.FileDesc{}
+ }
+ }()
+
+ // Copy entries.
+ tw := table.NewWriter(writer, o)
+ for iter.Next() {
+ key := iter.Key()
+ if validInternalKey(key) {
+ err = tw.Append(key, iter.Value())
+ if err != nil {
+ return
+ }
+ }
+ }
+ err = iter.Error()
+ if err != nil && !errors.IsCorrupted(err) {
+ return
+ }
+ err = tw.Close()
+ if err != nil {
+ return
+ }
+ if !noSync {
+ err = writer.Sync()
+ if err != nil {
+ return
+ }
+ }
+ size = int64(tw.BytesLen())
+ return
+ }
+ recoverTable := func(fd storage.FileDesc) error {
+ s.logf("table@recovery recovering @%d", fd.Num)
+ reader, err := s.stor.Open(fd)
+ if err != nil {
+ return err
+ }
+ var closed bool
+ defer func() {
+ if !closed {
+ reader.Close()
+ }
+ }()
+
+ // Get file size.
+ size, err := reader.Seek(0, 2)
+ if err != nil {
+ return err
+ }
+
+ var (
+ tSeq uint64
+ tgoodKey, tcorruptedKey, tcorruptedBlock int
+ imin, imax []byte
+ )
+ tr, err := table.NewReader(reader, size, fd, nil, bpool, o)
+ if err != nil {
+ return err
+ }
+ iter := tr.NewIterator(nil, nil)
+ if itererr, ok := iter.(iterator.ErrorCallbackSetter); ok {
+ itererr.SetErrorCallback(func(err error) {
+ if errors.IsCorrupted(err) {
+ s.logf("table@recovery block corruption @%d %q", fd.Num, err)
+ tcorruptedBlock++
+ }
+ })
+ }
+
+ // Scan the table.
+ for iter.Next() {
+ key := iter.Key()
+ _, seq, _, kerr := parseInternalKey(key)
+ if kerr != nil {
+ tcorruptedKey++
+ continue
+ }
+ tgoodKey++
+ if seq > tSeq {
+ tSeq = seq
+ }
+ if imin == nil {
+ imin = append([]byte{}, key...)
+ }
+ imax = append(imax[:0], key...)
+ }
+ if err := iter.Error(); err != nil && !errors.IsCorrupted(err) {
+ iter.Release()
+ return err
+ }
+ iter.Release()
+
+ goodKey += tgoodKey
+ corruptedKey += tcorruptedKey
+ corruptedBlock += tcorruptedBlock
+
+ if strict && (tcorruptedKey > 0 || tcorruptedBlock > 0) {
+ droppedTable++
+ s.logf("table@recovery dropped @%d Gk·%d Ck·%d Cb·%d S·%d Q·%d", fd.Num, tgoodKey, tcorruptedKey, tcorruptedBlock, size, tSeq)
+ return nil
+ }
+
+ if tgoodKey > 0 {
+ if tcorruptedKey > 0 || tcorruptedBlock > 0 {
+ // Rebuild the table.
+ s.logf("table@recovery rebuilding @%d", fd.Num)
+ iter := tr.NewIterator(nil, nil)
+ tmpFd, newSize, err := buildTable(iter)
+ iter.Release()
+ if err != nil {
+ return err
+ }
+ closed = true
+ reader.Close()
+ if err := s.stor.Rename(tmpFd, fd); err != nil {
+ return err
+ }
+ size = newSize
+ }
+ if tSeq > maxSeq {
+ maxSeq = tSeq
+ }
+ recoveredKey += tgoodKey
+ // Add table to level 0.
+ rec.addTable(0, fd.Num, size, imin, imax)
+ s.logf("table@recovery recovered @%d Gk·%d Ck·%d Cb·%d S·%d Q·%d", fd.Num, tgoodKey, tcorruptedKey, tcorruptedBlock, size, tSeq)
+ } else {
+ droppedTable++
+ s.logf("table@recovery unrecoverable @%d Ck·%d Cb·%d S·%d", fd.Num, tcorruptedKey, tcorruptedBlock, size)
+ }
+
+ return nil
+ }
+
+ // Recover all tables.
+ if len(fds) > 0 {
+ s.logf("table@recovery F·%d", len(fds))
+
+ // Mark file number as used.
+ s.markFileNum(fds[len(fds)-1].Num)
+
+ for _, fd := range fds {
+ if err := recoverTable(fd); err != nil {
+ return err
+ }
+ }
+
+ s.logf("table@recovery recovered F·%d N·%d Gk·%d Ck·%d Q·%d", len(fds), recoveredKey, goodKey, corruptedKey, maxSeq)
+ }
+
+ // Set sequence number.
+ rec.setSeqNum(maxSeq)
+
+ // Create new manifest.
+ if err := s.create(); err != nil {
+ return err
+ }
+
+ // Commit.
+ return s.commit(rec)
+}
+
+func (db *DB) recoverJournal() error {
+ // Get all journals and sort it by file number.
+ rawFds, err := db.s.stor.List(storage.TypeJournal)
+ if err != nil {
+ return err
+ }
+ sortFds(rawFds)
+
+ // Journals that will be recovered.
+ var fds []storage.FileDesc
+ for _, fd := range rawFds {
+ if fd.Num >= db.s.stJournalNum || fd.Num == db.s.stPrevJournalNum {
+ fds = append(fds, fd)
+ }
+ }
+
+ var (
+ ofd storage.FileDesc // Obsolete file.
+ rec = &sessionRecord{}
+ )
+
+ // Recover journals.
+ if len(fds) > 0 {
+ db.logf("journal@recovery F·%d", len(fds))
+
+ // Mark file number as used.
+ db.s.markFileNum(fds[len(fds)-1].Num)
+
+ var (
+ // Options.
+ strict = db.s.o.GetStrict(opt.StrictJournal)
+ checksum = db.s.o.GetStrict(opt.StrictJournalChecksum)
+ writeBuffer = db.s.o.GetWriteBuffer()
+
+ jr *journal.Reader
+ mdb = memdb.New(db.s.icmp, writeBuffer)
+ buf = &util.Buffer{}
+ batchSeq uint64
+ batchLen int
+ )
+
+ for _, fd := range fds {
+ db.logf("journal@recovery recovering @%d", fd.Num)
+
+ fr, err := db.s.stor.Open(fd)
+ if err != nil {
+ return err
+ }
+
+ // Create or reset journal reader instance.
+ if jr == nil {
+ jr = journal.NewReader(fr, dropper{db.s, fd}, strict, checksum)
+ } else {
+ jr.Reset(fr, dropper{db.s, fd}, strict, checksum)
+ }
+
+ // Flush memdb and remove obsolete journal file.
+ if !ofd.Zero() {
+ if mdb.Len() > 0 {
+ if _, err := db.s.flushMemdb(rec, mdb, 0); err != nil {
+ fr.Close()
+ return err
+ }
+ }
+
+ rec.setJournalNum(fd.Num)
+ rec.setSeqNum(db.seq)
+ if err := db.s.commit(rec); err != nil {
+ fr.Close()
+ return err
+ }
+ rec.resetAddedTables()
+
+ db.s.stor.Remove(ofd)
+ ofd = storage.FileDesc{}
+ }
+
+ // Replay journal to memdb.
+ mdb.Reset()
+ for {
+ r, err := jr.Next()
+ if err != nil {
+ if err == io.EOF {
+ break
+ }
+
+ fr.Close()
+ return errors.SetFd(err, fd)
+ }
+
+ buf.Reset()
+ if _, err := buf.ReadFrom(r); err != nil {
+ if err == io.ErrUnexpectedEOF {
+ // This is error returned due to corruption, with strict == false.
+ continue
+ }
+
+ fr.Close()
+ return errors.SetFd(err, fd)
+ }
+ batchSeq, batchLen, err = decodeBatchToMem(buf.Bytes(), db.seq, mdb)
+ if err != nil {
+ if !strict && errors.IsCorrupted(err) {
+ db.s.logf("journal error: %v (skipped)", err)
+ // We won't apply sequence number as it might be corrupted.
+ continue
+ }
+
+ fr.Close()
+ return errors.SetFd(err, fd)
+ }
+
+ // Save sequence number.
+ db.seq = batchSeq + uint64(batchLen)
+
+ // Flush it if large enough.
+ if mdb.Size() >= writeBuffer {
+ if _, err := db.s.flushMemdb(rec, mdb, 0); err != nil {
+ fr.Close()
+ return err
+ }
+
+ mdb.Reset()
+ }
+ }
+
+ fr.Close()
+ ofd = fd
+ }
+
+ // Flush the last memdb.
+ if mdb.Len() > 0 {
+ if _, err := db.s.flushMemdb(rec, mdb, 0); err != nil {
+ return err
+ }
+ }
+ }
+
+ // Create a new journal.
+ if _, err := db.newMem(0); err != nil {
+ return err
+ }
+
+ // Commit.
+ rec.setJournalNum(db.journalFd.Num)
+ rec.setSeqNum(db.seq)
+ if err := db.s.commit(rec); err != nil {
+ // Close journal on error.
+ if db.journal != nil {
+ db.journal.Close()
+ db.journalWriter.Close()
+ }
+ return err
+ }
+
+ // Remove the last obsolete journal file.
+ if !ofd.Zero() {
+ db.s.stor.Remove(ofd)
+ }
+
+ return nil
+}
+
+func (db *DB) recoverJournalRO() error {
+ // Get all journals and sort it by file number.
+ rawFds, err := db.s.stor.List(storage.TypeJournal)
+ if err != nil {
+ return err
+ }
+ sortFds(rawFds)
+
+ // Journals that will be recovered.
+ var fds []storage.FileDesc
+ for _, fd := range rawFds {
+ if fd.Num >= db.s.stJournalNum || fd.Num == db.s.stPrevJournalNum {
+ fds = append(fds, fd)
+ }
+ }
+
+ var (
+ // Options.
+ strict = db.s.o.GetStrict(opt.StrictJournal)
+ checksum = db.s.o.GetStrict(opt.StrictJournalChecksum)
+ writeBuffer = db.s.o.GetWriteBuffer()
+
+ mdb = memdb.New(db.s.icmp, writeBuffer)
+ )
+
+ // Recover journals.
+ if len(fds) > 0 {
+ db.logf("journal@recovery RO·Mode F·%d", len(fds))
+
+ var (
+ jr *journal.Reader
+ buf = &util.Buffer{}
+ batchSeq uint64
+ batchLen int
+ )
+
+ for _, fd := range fds {
+ db.logf("journal@recovery recovering @%d", fd.Num)
+
+ fr, err := db.s.stor.Open(fd)
+ if err != nil {
+ return err
+ }
+
+ // Create or reset journal reader instance.
+ if jr == nil {
+ jr = journal.NewReader(fr, dropper{db.s, fd}, strict, checksum)
+ } else {
+ jr.Reset(fr, dropper{db.s, fd}, strict, checksum)
+ }
+
+ // Replay journal to memdb.
+ for {
+ r, err := jr.Next()
+ if err != nil {
+ if err == io.EOF {
+ break
+ }
+
+ fr.Close()
+ return errors.SetFd(err, fd)
+ }
+
+ buf.Reset()
+ if _, err := buf.ReadFrom(r); err != nil {
+ if err == io.ErrUnexpectedEOF {
+ // This is error returned due to corruption, with strict == false.
+ continue
+ }
+
+ fr.Close()
+ return errors.SetFd(err, fd)
+ }
+ batchSeq, batchLen, err = decodeBatchToMem(buf.Bytes(), db.seq, mdb)
+ if err != nil {
+ if !strict && errors.IsCorrupted(err) {
+ db.s.logf("journal error: %v (skipped)", err)
+ // We won't apply sequence number as it might be corrupted.
+ continue
+ }
+
+ fr.Close()
+ return errors.SetFd(err, fd)
+ }
+
+ // Save sequence number.
+ db.seq = batchSeq + uint64(batchLen)
+ }
+
+ fr.Close()
+ }
+ }
+
+ // Set memDB.
+ db.mem = &memDB{db: db, DB: mdb, ref: 1}
+
+ return nil
+}
+
+func memGet(mdb *memdb.DB, ikey internalKey, icmp *iComparer) (ok bool, mv []byte, err error) {
+ mk, mv, err := mdb.Find(ikey)
+ if err == nil {
+ ukey, _, kt, kerr := parseInternalKey(mk)
+ if kerr != nil {
+ // Shouldn't have had happen.
+ panic(kerr)
+ }
+ if icmp.uCompare(ukey, ikey.ukey()) == 0 {
+ if kt == keyTypeDel {
+ return true, nil, ErrNotFound
+ }
+ return true, mv, nil
+
+ }
+ } else if err != ErrNotFound {
+ return true, nil, err
+ }
+ return
+}
+
+func (db *DB) get(auxm *memdb.DB, auxt tFiles, key []byte, seq uint64, ro *opt.ReadOptions) (value []byte, err error) {
+ ikey := makeInternalKey(nil, key, seq, keyTypeSeek)
+
+ if auxm != nil {
+ if ok, mv, me := memGet(auxm, ikey, db.s.icmp); ok {
+ return append([]byte{}, mv...), me
+ }
+ }
+
+ em, fm := db.getMems()
+ for _, m := range [...]*memDB{em, fm} {
+ if m == nil {
+ continue
+ }
+ defer m.decref()
+
+ if ok, mv, me := memGet(m.DB, ikey, db.s.icmp); ok {
+ return append([]byte{}, mv...), me
+ }
+ }
+
+ v := db.s.version()
+ value, cSched, err := v.get(auxt, ikey, ro, false)
+ v.release()
+ if cSched {
+ // Trigger table compaction.
+ db.compTrigger(db.tcompCmdC)
+ }
+ return
+}
+
+func nilIfNotFound(err error) error {
+ if err == ErrNotFound {
+ return nil
+ }
+ return err
+}
+
+func (db *DB) has(auxm *memdb.DB, auxt tFiles, key []byte, seq uint64, ro *opt.ReadOptions) (ret bool, err error) {
+ ikey := makeInternalKey(nil, key, seq, keyTypeSeek)
+
+ if auxm != nil {
+ if ok, _, me := memGet(auxm, ikey, db.s.icmp); ok {
+ return me == nil, nilIfNotFound(me)
+ }
+ }
+
+ em, fm := db.getMems()
+ for _, m := range [...]*memDB{em, fm} {
+ if m == nil {
+ continue
+ }
+ defer m.decref()
+
+ if ok, _, me := memGet(m.DB, ikey, db.s.icmp); ok {
+ return me == nil, nilIfNotFound(me)
+ }
+ }
+
+ v := db.s.version()
+ _, cSched, err := v.get(auxt, ikey, ro, true)
+ v.release()
+ if cSched {
+ // Trigger table compaction.
+ db.compTrigger(db.tcompCmdC)
+ }
+ if err == nil {
+ ret = true
+ } else if err == ErrNotFound {
+ err = nil
+ }
+ return
+}
+
+// Get gets the value for the given key. It returns ErrNotFound if the
+// DB does not contains the key.
+//
+// The returned slice is its own copy, it is safe to modify the contents
+// of the returned slice.
+// It is safe to modify the contents of the argument after Get returns.
+func (db *DB) Get(key []byte, ro *opt.ReadOptions) (value []byte, err error) {
+ err = db.ok()
+ if err != nil {
+ return
+ }
+
+ se := db.acquireSnapshot()
+ defer db.releaseSnapshot(se)
+ return db.get(nil, nil, key, se.seq, ro)
+}
+
+// Has returns true if the DB does contains the given key.
+//
+// It is safe to modify the contents of the argument after Has returns.
+func (db *DB) Has(key []byte, ro *opt.ReadOptions) (ret bool, err error) {
+ err = db.ok()
+ if err != nil {
+ return
+ }
+
+ se := db.acquireSnapshot()
+ defer db.releaseSnapshot(se)
+ return db.has(nil, nil, key, se.seq, ro)
+}
+
+// NewIterator returns an iterator for the latest snapshot of the
+// underlying DB.
+// The returned iterator is not safe for concurrent use, but it is safe to use
+// multiple iterators concurrently, with each in a dedicated goroutine.
+// It is also safe to use an iterator concurrently with modifying its
+// underlying DB. The resultant key/value pairs are guaranteed to be
+// consistent.
+//
+// Slice allows slicing the iterator to only contains keys in the given
+// range. A nil Range.Start is treated as a key before all keys in the
+// DB. And a nil Range.Limit is treated as a key after all keys in
+// the DB.
+//
+// WARNING: Any slice returned by interator (e.g. slice returned by calling
+// Iterator.Key() or Iterator.Key() methods), its content should not be modified
+// unless noted otherwise.
+//
+// The iterator must be released after use, by calling Release method.
+//
+// Also read Iterator documentation of the leveldb/iterator package.
+func (db *DB) NewIterator(slice *util.Range, ro *opt.ReadOptions) iterator.Iterator {
+ if err := db.ok(); err != nil {
+ return iterator.NewEmptyIterator(err)
+ }
+
+ se := db.acquireSnapshot()
+ defer db.releaseSnapshot(se)
+ // Iterator holds 'version' lock, 'version' is immutable so snapshot
+ // can be released after iterator created.
+ return db.newIterator(nil, nil, se.seq, slice, ro)
+}
+
+// GetSnapshot returns a latest snapshot of the underlying DB. A snapshot
+// is a frozen snapshot of a DB state at a particular point in time. The
+// content of snapshot are guaranteed to be consistent.
+//
+// The snapshot must be released after use, by calling Release method.
+func (db *DB) GetSnapshot() (*Snapshot, error) {
+ if err := db.ok(); err != nil {
+ return nil, err
+ }
+
+ return db.newSnapshot(), nil
+}
+
+// GetProperty returns value of the given property name.
+//
+// Property names:
+// leveldb.num-files-at-level{n}
+// Returns the number of files at level 'n'.
+// leveldb.stats
+// Returns statistics of the underlying DB.
+// leveldb.iostats
+// Returns statistics of effective disk read and write.
+// leveldb.writedelay
+// Returns cumulative write delay caused by compaction.
+// leveldb.sstables
+// Returns sstables list for each level.
+// leveldb.blockpool
+// Returns block pool stats.
+// leveldb.cachedblock
+// Returns size of cached block.
+// leveldb.openedtables
+// Returns number of opened tables.
+// leveldb.alivesnaps
+// Returns number of alive snapshots.
+// leveldb.aliveiters
+// Returns number of alive iterators.
+func (db *DB) GetProperty(name string) (value string, err error) {
+ err = db.ok()
+ if err != nil {
+ return
+ }
+
+ const prefix = "leveldb."
+ if !strings.HasPrefix(name, prefix) {
+ return "", ErrNotFound
+ }
+ p := name[len(prefix):]
+
+ v := db.s.version()
+ defer v.release()
+
+ numFilesPrefix := "num-files-at-level"
+ switch {
+ case strings.HasPrefix(p, numFilesPrefix):
+ var level uint
+ var rest string
+ n, _ := fmt.Sscanf(p[len(numFilesPrefix):], "%d%s", &level, &rest)
+ if n != 1 {
+ err = ErrNotFound
+ } else {
+ value = fmt.Sprint(v.tLen(int(level)))
+ }
+ case p == "stats":
+ value = "Compactions\n" +
+ " Level | Tables | Size(MB) | Time(sec) | Read(MB) | Write(MB)\n" +
+ "-------+------------+---------------+---------------+---------------+---------------\n"
+ for level, tables := range v.levels {
+ duration, read, write := db.compStats.getStat(level)
+ if len(tables) == 0 && duration == 0 {
+ continue
+ }
+ value += fmt.Sprintf(" %3d | %10d | %13.5f | %13.5f | %13.5f | %13.5f\n",
+ level, len(tables), float64(tables.size())/1048576.0, duration.Seconds(),
+ float64(read)/1048576.0, float64(write)/1048576.0)
+ }
+ case p == "iostats":
+ value = fmt.Sprintf("Read(MB):%.5f Write(MB):%.5f",
+ float64(db.s.stor.reads())/1048576.0,
+ float64(db.s.stor.writes())/1048576.0)
+ case p == "writedelay":
+ writeDelayN, writeDelay := atomic.LoadInt32(&db.cWriteDelayN), time.Duration(atomic.LoadInt64(&db.cWriteDelay))
+ paused := atomic.LoadInt32(&db.inWritePaused) == 1
+ value = fmt.Sprintf("DelayN:%d Delay:%s Paused:%t", writeDelayN, writeDelay, paused)
+ case p == "sstables":
+ for level, tables := range v.levels {
+ value += fmt.Sprintf("--- level %d ---\n", level)
+ for _, t := range tables {
+ value += fmt.Sprintf("%d:%d[%q .. %q]\n", t.fd.Num, t.size, t.imin, t.imax)
+ }
+ }
+ case p == "blockpool":
+ value = fmt.Sprintf("%v", db.s.tops.bpool)
+ case p == "cachedblock":
+ if db.s.tops.bcache != nil {
+ value = fmt.Sprintf("%d", db.s.tops.bcache.Size())
+ } else {
+ value = ""
+ }
+ case p == "openedtables":
+ value = fmt.Sprintf("%d", db.s.tops.cache.Size())
+ case p == "alivesnaps":
+ value = fmt.Sprintf("%d", atomic.LoadInt32(&db.aliveSnaps))
+ case p == "aliveiters":
+ value = fmt.Sprintf("%d", atomic.LoadInt32(&db.aliveIters))
+ default:
+ err = ErrNotFound
+ }
+
+ return
+}
+
+// DBStats is database statistics.
+type DBStats struct {
+ WriteDelayCount int32
+ WriteDelayDuration time.Duration
+ WritePaused bool
+
+ AliveSnapshots int32
+ AliveIterators int32
+
+ IOWrite uint64
+ IORead uint64
+
+ BlockCacheSize int
+ OpenedTablesCount int
+
+ LevelSizes []int64
+ LevelTablesCounts []int
+ LevelRead []int64
+ LevelWrite []int64
+ LevelDurations []time.Duration
+}
+
+// Stats populates s with database statistics.
+func (db *DB) Stats(s *DBStats) error {
+ err := db.ok()
+ if err != nil {
+ return err
+ }
+
+ s.IORead = db.s.stor.reads()
+ s.IOWrite = db.s.stor.writes()
+ s.WriteDelayCount = atomic.LoadInt32(&db.cWriteDelayN)
+ s.WriteDelayDuration = time.Duration(atomic.LoadInt64(&db.cWriteDelay))
+ s.WritePaused = atomic.LoadInt32(&db.inWritePaused) == 1
+
+ s.OpenedTablesCount = db.s.tops.cache.Size()
+ if db.s.tops.bcache != nil {
+ s.BlockCacheSize = db.s.tops.bcache.Size()
+ } else {
+ s.BlockCacheSize = 0
+ }
+
+ s.AliveIterators = atomic.LoadInt32(&db.aliveIters)
+ s.AliveSnapshots = atomic.LoadInt32(&db.aliveSnaps)
+
+ s.LevelDurations = s.LevelDurations[:0]
+ s.LevelRead = s.LevelRead[:0]
+ s.LevelWrite = s.LevelWrite[:0]
+ s.LevelSizes = s.LevelSizes[:0]
+ s.LevelTablesCounts = s.LevelTablesCounts[:0]
+
+ v := db.s.version()
+ defer v.release()
+
+ for level, tables := range v.levels {
+ duration, read, write := db.compStats.getStat(level)
+ if len(tables) == 0 && duration == 0 {
+ continue
+ }
+ s.LevelDurations = append(s.LevelDurations, duration)
+ s.LevelRead = append(s.LevelRead, read)
+ s.LevelWrite = append(s.LevelWrite, write)
+ s.LevelSizes = append(s.LevelSizes, tables.size())
+ s.LevelTablesCounts = append(s.LevelTablesCounts, len(tables))
+ }
+
+ return nil
+}
+
+// SizeOf calculates approximate sizes of the given key ranges.
+// The length of the returned sizes are equal with the length of the given
+// ranges. The returned sizes measure storage space usage, so if the user
+// data compresses by a factor of ten, the returned sizes will be one-tenth
+// the size of the corresponding user data size.
+// The results may not include the sizes of recently written data.
+func (db *DB) SizeOf(ranges []util.Range) (Sizes, error) {
+ if err := db.ok(); err != nil {
+ return nil, err
+ }
+
+ v := db.s.version()
+ defer v.release()
+
+ sizes := make(Sizes, 0, len(ranges))
+ for _, r := range ranges {
+ imin := makeInternalKey(nil, r.Start, keyMaxSeq, keyTypeSeek)
+ imax := makeInternalKey(nil, r.Limit, keyMaxSeq, keyTypeSeek)
+ start, err := v.offsetOf(imin)
+ if err != nil {
+ return nil, err
+ }
+ limit, err := v.offsetOf(imax)
+ if err != nil {
+ return nil, err
+ }
+ var size int64
+ if limit >= start {
+ size = limit - start
+ }
+ sizes = append(sizes, size)
+ }
+
+ return sizes, nil
+}
+
+// Close closes the DB. This will also releases any outstanding snapshot,
+// abort any in-flight compaction and discard open transaction.
+//
+// It is not safe to close a DB until all outstanding iterators are released.
+// It is valid to call Close multiple times. Other methods should not be
+// called after the DB has been closed.
+func (db *DB) Close() error {
+ if !db.setClosed() {
+ return ErrClosed
+ }
+
+ start := time.Now()
+ db.log("db@close closing")
+
+ // Clear the finalizer.
+ runtime.SetFinalizer(db, nil)
+
+ // Get compaction error.
+ var err error
+ select {
+ case err = <-db.compErrC:
+ if err == ErrReadOnly {
+ err = nil
+ }
+ default:
+ }
+
+ // Signal all goroutines.
+ close(db.closeC)
+
+ // Discard open transaction.
+ if db.tr != nil {
+ db.tr.Discard()
+ }
+
+ // Acquire writer lock.
+ db.writeLockC <- struct{}{}
+
+ // Wait for all gorotines to exit.
+ db.closeW.Wait()
+
+ // Closes journal.
+ if db.journal != nil {
+ db.journal.Close()
+ db.journalWriter.Close()
+ db.journal = nil
+ db.journalWriter = nil
+ }
+
+ if db.writeDelayN > 0 {
+ db.logf("db@write was delayed N·%d T·%v", db.writeDelayN, db.writeDelay)
+ }
+
+ // Close session.
+ db.s.close()
+ db.logf("db@close done T·%v", time.Since(start))
+ db.s.release()
+
+ if db.closer != nil {
+ if err1 := db.closer.Close(); err == nil {
+ err = err1
+ }
+ db.closer = nil
+ }
+
+ // Clear memdbs.
+ db.clearMems()
+
+ return err
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/db_compaction.go b/vendor/github.com/syndtr/goleveldb/leveldb/db_compaction.go
new file mode 100644
index 0000000..0c1b9a5
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/db_compaction.go
@@ -0,0 +1,854 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "sync"
+ "time"
+
+ "github.com/syndtr/goleveldb/leveldb/errors"
+ "github.com/syndtr/goleveldb/leveldb/opt"
+ "github.com/syndtr/goleveldb/leveldb/storage"
+)
+
+var (
+ errCompactionTransactExiting = errors.New("leveldb: compaction transact exiting")
+)
+
+type cStat struct {
+ duration time.Duration
+ read int64
+ write int64
+}
+
+func (p *cStat) add(n *cStatStaging) {
+ p.duration += n.duration
+ p.read += n.read
+ p.write += n.write
+}
+
+func (p *cStat) get() (duration time.Duration, read, write int64) {
+ return p.duration, p.read, p.write
+}
+
+type cStatStaging struct {
+ start time.Time
+ duration time.Duration
+ on bool
+ read int64
+ write int64
+}
+
+func (p *cStatStaging) startTimer() {
+ if !p.on {
+ p.start = time.Now()
+ p.on = true
+ }
+}
+
+func (p *cStatStaging) stopTimer() {
+ if p.on {
+ p.duration += time.Since(p.start)
+ p.on = false
+ }
+}
+
+type cStats struct {
+ lk sync.Mutex
+ stats []cStat
+}
+
+func (p *cStats) addStat(level int, n *cStatStaging) {
+ p.lk.Lock()
+ if level >= len(p.stats) {
+ newStats := make([]cStat, level+1)
+ copy(newStats, p.stats)
+ p.stats = newStats
+ }
+ p.stats[level].add(n)
+ p.lk.Unlock()
+}
+
+func (p *cStats) getStat(level int) (duration time.Duration, read, write int64) {
+ p.lk.Lock()
+ defer p.lk.Unlock()
+ if level < len(p.stats) {
+ return p.stats[level].get()
+ }
+ return
+}
+
+func (db *DB) compactionError() {
+ var err error
+noerr:
+ // No error.
+ for {
+ select {
+ case err = <-db.compErrSetC:
+ switch {
+ case err == nil:
+ case err == ErrReadOnly, errors.IsCorrupted(err):
+ goto hasperr
+ default:
+ goto haserr
+ }
+ case <-db.closeC:
+ return
+ }
+ }
+haserr:
+ // Transient error.
+ for {
+ select {
+ case db.compErrC <- err:
+ case err = <-db.compErrSetC:
+ switch {
+ case err == nil:
+ goto noerr
+ case err == ErrReadOnly, errors.IsCorrupted(err):
+ goto hasperr
+ default:
+ }
+ case <-db.closeC:
+ return
+ }
+ }
+hasperr:
+ // Persistent error.
+ for {
+ select {
+ case db.compErrC <- err:
+ case db.compPerErrC <- err:
+ case db.writeLockC <- struct{}{}:
+ // Hold write lock, so that write won't pass-through.
+ db.compWriteLocking = true
+ case <-db.closeC:
+ if db.compWriteLocking {
+ // We should release the lock or Close will hang.
+ <-db.writeLockC
+ }
+ return
+ }
+ }
+}
+
+type compactionTransactCounter int
+
+func (cnt *compactionTransactCounter) incr() {
+ *cnt++
+}
+
+type compactionTransactInterface interface {
+ run(cnt *compactionTransactCounter) error
+ revert() error
+}
+
+func (db *DB) compactionTransact(name string, t compactionTransactInterface) {
+ defer func() {
+ if x := recover(); x != nil {
+ if x == errCompactionTransactExiting {
+ if err := t.revert(); err != nil {
+ db.logf("%s revert error %q", name, err)
+ }
+ }
+ panic(x)
+ }
+ }()
+
+ const (
+ backoffMin = 1 * time.Second
+ backoffMax = 8 * time.Second
+ backoffMul = 2 * time.Second
+ )
+ var (
+ backoff = backoffMin
+ backoffT = time.NewTimer(backoff)
+ lastCnt = compactionTransactCounter(0)
+
+ disableBackoff = db.s.o.GetDisableCompactionBackoff()
+ )
+ for n := 0; ; n++ {
+ // Check whether the DB is closed.
+ if db.isClosed() {
+ db.logf("%s exiting", name)
+ db.compactionExitTransact()
+ } else if n > 0 {
+ db.logf("%s retrying N·%d", name, n)
+ }
+
+ // Execute.
+ cnt := compactionTransactCounter(0)
+ err := t.run(&cnt)
+ if err != nil {
+ db.logf("%s error I·%d %q", name, cnt, err)
+ }
+
+ // Set compaction error status.
+ select {
+ case db.compErrSetC <- err:
+ case perr := <-db.compPerErrC:
+ if err != nil {
+ db.logf("%s exiting (persistent error %q)", name, perr)
+ db.compactionExitTransact()
+ }
+ case <-db.closeC:
+ db.logf("%s exiting", name)
+ db.compactionExitTransact()
+ }
+ if err == nil {
+ return
+ }
+ if errors.IsCorrupted(err) {
+ db.logf("%s exiting (corruption detected)", name)
+ db.compactionExitTransact()
+ }
+
+ if !disableBackoff {
+ // Reset backoff duration if counter is advancing.
+ if cnt > lastCnt {
+ backoff = backoffMin
+ lastCnt = cnt
+ }
+
+ // Backoff.
+ backoffT.Reset(backoff)
+ if backoff < backoffMax {
+ backoff *= backoffMul
+ if backoff > backoffMax {
+ backoff = backoffMax
+ }
+ }
+ select {
+ case <-backoffT.C:
+ case <-db.closeC:
+ db.logf("%s exiting", name)
+ db.compactionExitTransact()
+ }
+ }
+ }
+}
+
+type compactionTransactFunc struct {
+ runFunc func(cnt *compactionTransactCounter) error
+ revertFunc func() error
+}
+
+func (t *compactionTransactFunc) run(cnt *compactionTransactCounter) error {
+ return t.runFunc(cnt)
+}
+
+func (t *compactionTransactFunc) revert() error {
+ if t.revertFunc != nil {
+ return t.revertFunc()
+ }
+ return nil
+}
+
+func (db *DB) compactionTransactFunc(name string, run func(cnt *compactionTransactCounter) error, revert func() error) {
+ db.compactionTransact(name, &compactionTransactFunc{run, revert})
+}
+
+func (db *DB) compactionExitTransact() {
+ panic(errCompactionTransactExiting)
+}
+
+func (db *DB) compactionCommit(name string, rec *sessionRecord) {
+ db.compCommitLk.Lock()
+ defer db.compCommitLk.Unlock() // Defer is necessary.
+ db.compactionTransactFunc(name+"@commit", func(cnt *compactionTransactCounter) error {
+ return db.s.commit(rec)
+ }, nil)
+}
+
+func (db *DB) memCompaction() {
+ mdb := db.getFrozenMem()
+ if mdb == nil {
+ return
+ }
+ defer mdb.decref()
+
+ db.logf("memdb@flush N·%d S·%s", mdb.Len(), shortenb(mdb.Size()))
+
+ // Don't compact empty memdb.
+ if mdb.Len() == 0 {
+ db.logf("memdb@flush skipping")
+ // drop frozen memdb
+ db.dropFrozenMem()
+ return
+ }
+
+ // Pause table compaction.
+ resumeC := make(chan struct{})
+ select {
+ case db.tcompPauseC <- (chan<- struct{})(resumeC):
+ case <-db.compPerErrC:
+ close(resumeC)
+ resumeC = nil
+ case <-db.closeC:
+ db.compactionExitTransact()
+ }
+
+ var (
+ rec = &sessionRecord{}
+ stats = &cStatStaging{}
+ flushLevel int
+ )
+
+ // Generate tables.
+ db.compactionTransactFunc("memdb@flush", func(cnt *compactionTransactCounter) (err error) {
+ stats.startTimer()
+ flushLevel, err = db.s.flushMemdb(rec, mdb.DB, db.memdbMaxLevel)
+ stats.stopTimer()
+ return
+ }, func() error {
+ for _, r := range rec.addedTables {
+ db.logf("memdb@flush revert @%d", r.num)
+ if err := db.s.stor.Remove(storage.FileDesc{Type: storage.TypeTable, Num: r.num}); err != nil {
+ return err
+ }
+ }
+ return nil
+ })
+
+ rec.setJournalNum(db.journalFd.Num)
+ rec.setSeqNum(db.frozenSeq)
+
+ // Commit.
+ stats.startTimer()
+ db.compactionCommit("memdb", rec)
+ stats.stopTimer()
+
+ db.logf("memdb@flush committed F·%d T·%v", len(rec.addedTables), stats.duration)
+
+ for _, r := range rec.addedTables {
+ stats.write += r.size
+ }
+ db.compStats.addStat(flushLevel, stats)
+
+ // Drop frozen memdb.
+ db.dropFrozenMem()
+
+ // Resume table compaction.
+ if resumeC != nil {
+ select {
+ case <-resumeC:
+ close(resumeC)
+ case <-db.closeC:
+ db.compactionExitTransact()
+ }
+ }
+
+ // Trigger table compaction.
+ db.compTrigger(db.tcompCmdC)
+}
+
+type tableCompactionBuilder struct {
+ db *DB
+ s *session
+ c *compaction
+ rec *sessionRecord
+ stat0, stat1 *cStatStaging
+
+ snapHasLastUkey bool
+ snapLastUkey []byte
+ snapLastSeq uint64
+ snapIter int
+ snapKerrCnt int
+ snapDropCnt int
+
+ kerrCnt int
+ dropCnt int
+
+ minSeq uint64
+ strict bool
+ tableSize int
+
+ tw *tWriter
+}
+
+func (b *tableCompactionBuilder) appendKV(key, value []byte) error {
+ // Create new table if not already.
+ if b.tw == nil {
+ // Check for pause event.
+ if b.db != nil {
+ select {
+ case ch := <-b.db.tcompPauseC:
+ b.db.pauseCompaction(ch)
+ case <-b.db.closeC:
+ b.db.compactionExitTransact()
+ default:
+ }
+ }
+
+ // Create new table.
+ var err error
+ b.tw, err = b.s.tops.create()
+ if err != nil {
+ return err
+ }
+ }
+
+ // Write key/value into table.
+ return b.tw.append(key, value)
+}
+
+func (b *tableCompactionBuilder) needFlush() bool {
+ return b.tw.tw.BytesLen() >= b.tableSize
+}
+
+func (b *tableCompactionBuilder) flush() error {
+ t, err := b.tw.finish()
+ if err != nil {
+ return err
+ }
+ b.rec.addTableFile(b.c.sourceLevel+1, t)
+ b.stat1.write += t.size
+ b.s.logf("table@build created L%d@%d N·%d S·%s %q:%q", b.c.sourceLevel+1, t.fd.Num, b.tw.tw.EntriesLen(), shortenb(int(t.size)), t.imin, t.imax)
+ b.tw = nil
+ return nil
+}
+
+func (b *tableCompactionBuilder) cleanup() {
+ if b.tw != nil {
+ b.tw.drop()
+ b.tw = nil
+ }
+}
+
+func (b *tableCompactionBuilder) run(cnt *compactionTransactCounter) error {
+ snapResumed := b.snapIter > 0
+ hasLastUkey := b.snapHasLastUkey // The key might has zero length, so this is necessary.
+ lastUkey := append([]byte{}, b.snapLastUkey...)
+ lastSeq := b.snapLastSeq
+ b.kerrCnt = b.snapKerrCnt
+ b.dropCnt = b.snapDropCnt
+ // Restore compaction state.
+ b.c.restore()
+
+ defer b.cleanup()
+
+ b.stat1.startTimer()
+ defer b.stat1.stopTimer()
+
+ iter := b.c.newIterator()
+ defer iter.Release()
+ for i := 0; iter.Next(); i++ {
+ // Incr transact counter.
+ cnt.incr()
+
+ // Skip until last state.
+ if i < b.snapIter {
+ continue
+ }
+
+ resumed := false
+ if snapResumed {
+ resumed = true
+ snapResumed = false
+ }
+
+ ikey := iter.Key()
+ ukey, seq, kt, kerr := parseInternalKey(ikey)
+
+ if kerr == nil {
+ shouldStop := !resumed && b.c.shouldStopBefore(ikey)
+
+ if !hasLastUkey || b.s.icmp.uCompare(lastUkey, ukey) != 0 {
+ // First occurrence of this user key.
+
+ // Only rotate tables if ukey doesn't hop across.
+ if b.tw != nil && (shouldStop || b.needFlush()) {
+ if err := b.flush(); err != nil {
+ return err
+ }
+
+ // Creates snapshot of the state.
+ b.c.save()
+ b.snapHasLastUkey = hasLastUkey
+ b.snapLastUkey = append(b.snapLastUkey[:0], lastUkey...)
+ b.snapLastSeq = lastSeq
+ b.snapIter = i
+ b.snapKerrCnt = b.kerrCnt
+ b.snapDropCnt = b.dropCnt
+ }
+
+ hasLastUkey = true
+ lastUkey = append(lastUkey[:0], ukey...)
+ lastSeq = keyMaxSeq
+ }
+
+ switch {
+ case lastSeq <= b.minSeq:
+ // Dropped because newer entry for same user key exist
+ fallthrough // (A)
+ case kt == keyTypeDel && seq <= b.minSeq && b.c.baseLevelForKey(lastUkey):
+ // For this user key:
+ // (1) there is no data in higher levels
+ // (2) data in lower levels will have larger seq numbers
+ // (3) data in layers that are being compacted here and have
+ // smaller seq numbers will be dropped in the next
+ // few iterations of this loop (by rule (A) above).
+ // Therefore this deletion marker is obsolete and can be dropped.
+ lastSeq = seq
+ b.dropCnt++
+ continue
+ default:
+ lastSeq = seq
+ }
+ } else {
+ if b.strict {
+ return kerr
+ }
+
+ // Don't drop corrupted keys.
+ hasLastUkey = false
+ lastUkey = lastUkey[:0]
+ lastSeq = keyMaxSeq
+ b.kerrCnt++
+ }
+
+ if err := b.appendKV(ikey, iter.Value()); err != nil {
+ return err
+ }
+ }
+
+ if err := iter.Error(); err != nil {
+ return err
+ }
+
+ // Finish last table.
+ if b.tw != nil && !b.tw.empty() {
+ return b.flush()
+ }
+ return nil
+}
+
+func (b *tableCompactionBuilder) revert() error {
+ for _, at := range b.rec.addedTables {
+ b.s.logf("table@build revert @%d", at.num)
+ if err := b.s.stor.Remove(storage.FileDesc{Type: storage.TypeTable, Num: at.num}); err != nil {
+ return err
+ }
+ }
+ return nil
+}
+
+func (db *DB) tableCompaction(c *compaction, noTrivial bool) {
+ defer c.release()
+
+ rec := &sessionRecord{}
+ rec.addCompPtr(c.sourceLevel, c.imax)
+
+ if !noTrivial && c.trivial() {
+ t := c.levels[0][0]
+ db.logf("table@move L%d@%d -> L%d", c.sourceLevel, t.fd.Num, c.sourceLevel+1)
+ rec.delTable(c.sourceLevel, t.fd.Num)
+ rec.addTableFile(c.sourceLevel+1, t)
+ db.compactionCommit("table-move", rec)
+ return
+ }
+
+ var stats [2]cStatStaging
+ for i, tables := range c.levels {
+ for _, t := range tables {
+ stats[i].read += t.size
+ // Insert deleted tables into record
+ rec.delTable(c.sourceLevel+i, t.fd.Num)
+ }
+ }
+ sourceSize := int(stats[0].read + stats[1].read)
+ minSeq := db.minSeq()
+ db.logf("table@compaction L%d·%d -> L%d·%d S·%s Q·%d", c.sourceLevel, len(c.levels[0]), c.sourceLevel+1, len(c.levels[1]), shortenb(sourceSize), minSeq)
+
+ b := &tableCompactionBuilder{
+ db: db,
+ s: db.s,
+ c: c,
+ rec: rec,
+ stat1: &stats[1],
+ minSeq: minSeq,
+ strict: db.s.o.GetStrict(opt.StrictCompaction),
+ tableSize: db.s.o.GetCompactionTableSize(c.sourceLevel + 1),
+ }
+ db.compactionTransact("table@build", b)
+
+ // Commit.
+ stats[1].startTimer()
+ db.compactionCommit("table", rec)
+ stats[1].stopTimer()
+
+ resultSize := int(stats[1].write)
+ db.logf("table@compaction committed F%s S%s Ke·%d D·%d T·%v", sint(len(rec.addedTables)-len(rec.deletedTables)), sshortenb(resultSize-sourceSize), b.kerrCnt, b.dropCnt, stats[1].duration)
+
+ // Save compaction stats
+ for i := range stats {
+ db.compStats.addStat(c.sourceLevel+1, &stats[i])
+ }
+}
+
+func (db *DB) tableRangeCompaction(level int, umin, umax []byte) error {
+ db.logf("table@compaction range L%d %q:%q", level, umin, umax)
+ if level >= 0 {
+ if c := db.s.getCompactionRange(level, umin, umax, true); c != nil {
+ db.tableCompaction(c, true)
+ }
+ } else {
+ // Retry until nothing to compact.
+ for {
+ compacted := false
+
+ // Scan for maximum level with overlapped tables.
+ v := db.s.version()
+ m := 1
+ for i := m; i < len(v.levels); i++ {
+ tables := v.levels[i]
+ if tables.overlaps(db.s.icmp, umin, umax, false) {
+ m = i
+ }
+ }
+ v.release()
+
+ for level := 0; level < m; level++ {
+ if c := db.s.getCompactionRange(level, umin, umax, false); c != nil {
+ db.tableCompaction(c, true)
+ compacted = true
+ }
+ }
+
+ if !compacted {
+ break
+ }
+ }
+ }
+
+ return nil
+}
+
+func (db *DB) tableAutoCompaction() {
+ if c := db.s.pickCompaction(); c != nil {
+ db.tableCompaction(c, false)
+ }
+}
+
+func (db *DB) tableNeedCompaction() bool {
+ v := db.s.version()
+ defer v.release()
+ return v.needCompaction()
+}
+
+// resumeWrite returns an indicator whether we should resume write operation if enough level0 files are compacted.
+func (db *DB) resumeWrite() bool {
+ v := db.s.version()
+ defer v.release()
+ if v.tLen(0) < db.s.o.GetWriteL0PauseTrigger() {
+ return true
+ }
+ return false
+}
+
+func (db *DB) pauseCompaction(ch chan<- struct{}) {
+ select {
+ case ch <- struct{}{}:
+ case <-db.closeC:
+ db.compactionExitTransact()
+ }
+}
+
+type cCmd interface {
+ ack(err error)
+}
+
+type cAuto struct {
+ // Note for table compaction, an non-empty ackC represents it's a compaction waiting command.
+ ackC chan<- error
+}
+
+func (r cAuto) ack(err error) {
+ if r.ackC != nil {
+ defer func() {
+ recover()
+ }()
+ r.ackC <- err
+ }
+}
+
+type cRange struct {
+ level int
+ min, max []byte
+ ackC chan<- error
+}
+
+func (r cRange) ack(err error) {
+ if r.ackC != nil {
+ defer func() {
+ recover()
+ }()
+ r.ackC <- err
+ }
+}
+
+// This will trigger auto compaction but will not wait for it.
+func (db *DB) compTrigger(compC chan<- cCmd) {
+ select {
+ case compC <- cAuto{}:
+ default:
+ }
+}
+
+// This will trigger auto compaction and/or wait for all compaction to be done.
+func (db *DB) compTriggerWait(compC chan<- cCmd) (err error) {
+ ch := make(chan error)
+ defer close(ch)
+ // Send cmd.
+ select {
+ case compC <- cAuto{ch}:
+ case err = <-db.compErrC:
+ return
+ case <-db.closeC:
+ return ErrClosed
+ }
+ // Wait cmd.
+ select {
+ case err = <-ch:
+ case err = <-db.compErrC:
+ case <-db.closeC:
+ return ErrClosed
+ }
+ return err
+}
+
+// Send range compaction request.
+func (db *DB) compTriggerRange(compC chan<- cCmd, level int, min, max []byte) (err error) {
+ ch := make(chan error)
+ defer close(ch)
+ // Send cmd.
+ select {
+ case compC <- cRange{level, min, max, ch}:
+ case err := <-db.compErrC:
+ return err
+ case <-db.closeC:
+ return ErrClosed
+ }
+ // Wait cmd.
+ select {
+ case err = <-ch:
+ case err = <-db.compErrC:
+ case <-db.closeC:
+ return ErrClosed
+ }
+ return err
+}
+
+func (db *DB) mCompaction() {
+ var x cCmd
+
+ defer func() {
+ if x := recover(); x != nil {
+ if x != errCompactionTransactExiting {
+ panic(x)
+ }
+ }
+ if x != nil {
+ x.ack(ErrClosed)
+ }
+ db.closeW.Done()
+ }()
+
+ for {
+ select {
+ case x = <-db.mcompCmdC:
+ switch x.(type) {
+ case cAuto:
+ db.memCompaction()
+ x.ack(nil)
+ x = nil
+ default:
+ panic("leveldb: unknown command")
+ }
+ case <-db.closeC:
+ return
+ }
+ }
+}
+
+func (db *DB) tCompaction() {
+ var (
+ x cCmd
+ waitQ []cCmd
+ )
+
+ defer func() {
+ if x := recover(); x != nil {
+ if x != errCompactionTransactExiting {
+ panic(x)
+ }
+ }
+ for i := range waitQ {
+ waitQ[i].ack(ErrClosed)
+ waitQ[i] = nil
+ }
+ if x != nil {
+ x.ack(ErrClosed)
+ }
+ db.closeW.Done()
+ }()
+
+ for {
+ if db.tableNeedCompaction() {
+ select {
+ case x = <-db.tcompCmdC:
+ case ch := <-db.tcompPauseC:
+ db.pauseCompaction(ch)
+ continue
+ case <-db.closeC:
+ return
+ default:
+ }
+ // Resume write operation as soon as possible.
+ if len(waitQ) > 0 && db.resumeWrite() {
+ for i := range waitQ {
+ waitQ[i].ack(nil)
+ waitQ[i] = nil
+ }
+ waitQ = waitQ[:0]
+ }
+ } else {
+ for i := range waitQ {
+ waitQ[i].ack(nil)
+ waitQ[i] = nil
+ }
+ waitQ = waitQ[:0]
+ select {
+ case x = <-db.tcompCmdC:
+ case ch := <-db.tcompPauseC:
+ db.pauseCompaction(ch)
+ continue
+ case <-db.closeC:
+ return
+ }
+ }
+ if x != nil {
+ switch cmd := x.(type) {
+ case cAuto:
+ if cmd.ackC != nil {
+ // Check the write pause state before caching it.
+ if db.resumeWrite() {
+ x.ack(nil)
+ } else {
+ waitQ = append(waitQ, x)
+ }
+ }
+ case cRange:
+ x.ack(db.tableRangeCompaction(cmd.level, cmd.min, cmd.max))
+ default:
+ panic("leveldb: unknown command")
+ }
+ x = nil
+ }
+ db.tableAutoCompaction()
+ }
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/db_iter.go b/vendor/github.com/syndtr/goleveldb/leveldb/db_iter.go
new file mode 100644
index 0000000..03c24cd
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/db_iter.go
@@ -0,0 +1,360 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "errors"
+ "math/rand"
+ "runtime"
+ "sync"
+ "sync/atomic"
+
+ "github.com/syndtr/goleveldb/leveldb/iterator"
+ "github.com/syndtr/goleveldb/leveldb/opt"
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+var (
+ errInvalidInternalKey = errors.New("leveldb: Iterator: invalid internal key")
+)
+
+type memdbReleaser struct {
+ once sync.Once
+ m *memDB
+}
+
+func (mr *memdbReleaser) Release() {
+ mr.once.Do(func() {
+ mr.m.decref()
+ })
+}
+
+func (db *DB) newRawIterator(auxm *memDB, auxt tFiles, slice *util.Range, ro *opt.ReadOptions) iterator.Iterator {
+ strict := opt.GetStrict(db.s.o.Options, ro, opt.StrictReader)
+ em, fm := db.getMems()
+ v := db.s.version()
+
+ tableIts := v.getIterators(slice, ro)
+ n := len(tableIts) + len(auxt) + 3
+ its := make([]iterator.Iterator, 0, n)
+
+ if auxm != nil {
+ ami := auxm.NewIterator(slice)
+ ami.SetReleaser(&memdbReleaser{m: auxm})
+ its = append(its, ami)
+ }
+ for _, t := range auxt {
+ its = append(its, v.s.tops.newIterator(t, slice, ro))
+ }
+
+ emi := em.NewIterator(slice)
+ emi.SetReleaser(&memdbReleaser{m: em})
+ its = append(its, emi)
+ if fm != nil {
+ fmi := fm.NewIterator(slice)
+ fmi.SetReleaser(&memdbReleaser{m: fm})
+ its = append(its, fmi)
+ }
+ its = append(its, tableIts...)
+ mi := iterator.NewMergedIterator(its, db.s.icmp, strict)
+ mi.SetReleaser(&versionReleaser{v: v})
+ return mi
+}
+
+func (db *DB) newIterator(auxm *memDB, auxt tFiles, seq uint64, slice *util.Range, ro *opt.ReadOptions) *dbIter {
+ var islice *util.Range
+ if slice != nil {
+ islice = &util.Range{}
+ if slice.Start != nil {
+ islice.Start = makeInternalKey(nil, slice.Start, keyMaxSeq, keyTypeSeek)
+ }
+ if slice.Limit != nil {
+ islice.Limit = makeInternalKey(nil, slice.Limit, keyMaxSeq, keyTypeSeek)
+ }
+ }
+ rawIter := db.newRawIterator(auxm, auxt, islice, ro)
+ iter := &dbIter{
+ db: db,
+ icmp: db.s.icmp,
+ iter: rawIter,
+ seq: seq,
+ strict: opt.GetStrict(db.s.o.Options, ro, opt.StrictReader),
+ key: make([]byte, 0),
+ value: make([]byte, 0),
+ }
+ atomic.AddInt32(&db.aliveIters, 1)
+ runtime.SetFinalizer(iter, (*dbIter).Release)
+ return iter
+}
+
+func (db *DB) iterSamplingRate() int {
+ return rand.Intn(2 * db.s.o.GetIteratorSamplingRate())
+}
+
+type dir int
+
+const (
+ dirReleased dir = iota - 1
+ dirSOI
+ dirEOI
+ dirBackward
+ dirForward
+)
+
+// dbIter represent an interator states over a database session.
+type dbIter struct {
+ db *DB
+ icmp *iComparer
+ iter iterator.Iterator
+ seq uint64
+ strict bool
+
+ smaplingGap int
+ dir dir
+ key []byte
+ value []byte
+ err error
+ releaser util.Releaser
+}
+
+func (i *dbIter) sampleSeek() {
+ ikey := i.iter.Key()
+ i.smaplingGap -= len(ikey) + len(i.iter.Value())
+ for i.smaplingGap < 0 {
+ i.smaplingGap += i.db.iterSamplingRate()
+ i.db.sampleSeek(ikey)
+ }
+}
+
+func (i *dbIter) setErr(err error) {
+ i.err = err
+ i.key = nil
+ i.value = nil
+}
+
+func (i *dbIter) iterErr() {
+ if err := i.iter.Error(); err != nil {
+ i.setErr(err)
+ }
+}
+
+func (i *dbIter) Valid() bool {
+ return i.err == nil && i.dir > dirEOI
+}
+
+func (i *dbIter) First() bool {
+ if i.err != nil {
+ return false
+ } else if i.dir == dirReleased {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ if i.iter.First() {
+ i.dir = dirSOI
+ return i.next()
+ }
+ i.dir = dirEOI
+ i.iterErr()
+ return false
+}
+
+func (i *dbIter) Last() bool {
+ if i.err != nil {
+ return false
+ } else if i.dir == dirReleased {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ if i.iter.Last() {
+ return i.prev()
+ }
+ i.dir = dirSOI
+ i.iterErr()
+ return false
+}
+
+func (i *dbIter) Seek(key []byte) bool {
+ if i.err != nil {
+ return false
+ } else if i.dir == dirReleased {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ ikey := makeInternalKey(nil, key, i.seq, keyTypeSeek)
+ if i.iter.Seek(ikey) {
+ i.dir = dirSOI
+ return i.next()
+ }
+ i.dir = dirEOI
+ i.iterErr()
+ return false
+}
+
+func (i *dbIter) next() bool {
+ for {
+ if ukey, seq, kt, kerr := parseInternalKey(i.iter.Key()); kerr == nil {
+ i.sampleSeek()
+ if seq <= i.seq {
+ switch kt {
+ case keyTypeDel:
+ // Skip deleted key.
+ i.key = append(i.key[:0], ukey...)
+ i.dir = dirForward
+ case keyTypeVal:
+ if i.dir == dirSOI || i.icmp.uCompare(ukey, i.key) > 0 {
+ i.key = append(i.key[:0], ukey...)
+ i.value = append(i.value[:0], i.iter.Value()...)
+ i.dir = dirForward
+ return true
+ }
+ }
+ }
+ } else if i.strict {
+ i.setErr(kerr)
+ break
+ }
+ if !i.iter.Next() {
+ i.dir = dirEOI
+ i.iterErr()
+ break
+ }
+ }
+ return false
+}
+
+func (i *dbIter) Next() bool {
+ if i.dir == dirEOI || i.err != nil {
+ return false
+ } else if i.dir == dirReleased {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ if !i.iter.Next() || (i.dir == dirBackward && !i.iter.Next()) {
+ i.dir = dirEOI
+ i.iterErr()
+ return false
+ }
+ return i.next()
+}
+
+func (i *dbIter) prev() bool {
+ i.dir = dirBackward
+ del := true
+ if i.iter.Valid() {
+ for {
+ if ukey, seq, kt, kerr := parseInternalKey(i.iter.Key()); kerr == nil {
+ i.sampleSeek()
+ if seq <= i.seq {
+ if !del && i.icmp.uCompare(ukey, i.key) < 0 {
+ return true
+ }
+ del = (kt == keyTypeDel)
+ if !del {
+ i.key = append(i.key[:0], ukey...)
+ i.value = append(i.value[:0], i.iter.Value()...)
+ }
+ }
+ } else if i.strict {
+ i.setErr(kerr)
+ return false
+ }
+ if !i.iter.Prev() {
+ break
+ }
+ }
+ }
+ if del {
+ i.dir = dirSOI
+ i.iterErr()
+ return false
+ }
+ return true
+}
+
+func (i *dbIter) Prev() bool {
+ if i.dir == dirSOI || i.err != nil {
+ return false
+ } else if i.dir == dirReleased {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ switch i.dir {
+ case dirEOI:
+ return i.Last()
+ case dirForward:
+ for i.iter.Prev() {
+ if ukey, _, _, kerr := parseInternalKey(i.iter.Key()); kerr == nil {
+ i.sampleSeek()
+ if i.icmp.uCompare(ukey, i.key) < 0 {
+ goto cont
+ }
+ } else if i.strict {
+ i.setErr(kerr)
+ return false
+ }
+ }
+ i.dir = dirSOI
+ i.iterErr()
+ return false
+ }
+
+cont:
+ return i.prev()
+}
+
+func (i *dbIter) Key() []byte {
+ if i.err != nil || i.dir <= dirEOI {
+ return nil
+ }
+ return i.key
+}
+
+func (i *dbIter) Value() []byte {
+ if i.err != nil || i.dir <= dirEOI {
+ return nil
+ }
+ return i.value
+}
+
+func (i *dbIter) Release() {
+ if i.dir != dirReleased {
+ // Clear the finalizer.
+ runtime.SetFinalizer(i, nil)
+
+ if i.releaser != nil {
+ i.releaser.Release()
+ i.releaser = nil
+ }
+
+ i.dir = dirReleased
+ i.key = nil
+ i.value = nil
+ i.iter.Release()
+ i.iter = nil
+ atomic.AddInt32(&i.db.aliveIters, -1)
+ i.db = nil
+ }
+}
+
+func (i *dbIter) SetReleaser(releaser util.Releaser) {
+ if i.dir == dirReleased {
+ panic(util.ErrReleased)
+ }
+ if i.releaser != nil && releaser != nil {
+ panic(util.ErrHasReleaser)
+ }
+ i.releaser = releaser
+}
+
+func (i *dbIter) Error() error {
+ return i.err
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/db_snapshot.go b/vendor/github.com/syndtr/goleveldb/leveldb/db_snapshot.go
new file mode 100644
index 0000000..c2ad70c
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/db_snapshot.go
@@ -0,0 +1,187 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "container/list"
+ "fmt"
+ "runtime"
+ "sync"
+ "sync/atomic"
+
+ "github.com/syndtr/goleveldb/leveldb/iterator"
+ "github.com/syndtr/goleveldb/leveldb/opt"
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+type snapshotElement struct {
+ seq uint64
+ ref int
+ e *list.Element
+}
+
+// Acquires a snapshot, based on latest sequence.
+func (db *DB) acquireSnapshot() *snapshotElement {
+ db.snapsMu.Lock()
+ defer db.snapsMu.Unlock()
+
+ seq := db.getSeq()
+
+ if e := db.snapsList.Back(); e != nil {
+ se := e.Value.(*snapshotElement)
+ if se.seq == seq {
+ se.ref++
+ return se
+ } else if seq < se.seq {
+ panic("leveldb: sequence number is not increasing")
+ }
+ }
+ se := &snapshotElement{seq: seq, ref: 1}
+ se.e = db.snapsList.PushBack(se)
+ return se
+}
+
+// Releases given snapshot element.
+func (db *DB) releaseSnapshot(se *snapshotElement) {
+ db.snapsMu.Lock()
+ defer db.snapsMu.Unlock()
+
+ se.ref--
+ if se.ref == 0 {
+ db.snapsList.Remove(se.e)
+ se.e = nil
+ } else if se.ref < 0 {
+ panic("leveldb: Snapshot: negative element reference")
+ }
+}
+
+// Gets minimum sequence that not being snapshotted.
+func (db *DB) minSeq() uint64 {
+ db.snapsMu.Lock()
+ defer db.snapsMu.Unlock()
+
+ if e := db.snapsList.Front(); e != nil {
+ return e.Value.(*snapshotElement).seq
+ }
+
+ return db.getSeq()
+}
+
+// Snapshot is a DB snapshot.
+type Snapshot struct {
+ db *DB
+ elem *snapshotElement
+ mu sync.RWMutex
+ released bool
+}
+
+// Creates new snapshot object.
+func (db *DB) newSnapshot() *Snapshot {
+ snap := &Snapshot{
+ db: db,
+ elem: db.acquireSnapshot(),
+ }
+ atomic.AddInt32(&db.aliveSnaps, 1)
+ runtime.SetFinalizer(snap, (*Snapshot).Release)
+ return snap
+}
+
+func (snap *Snapshot) String() string {
+ return fmt.Sprintf("leveldb.Snapshot{%d}", snap.elem.seq)
+}
+
+// Get gets the value for the given key. It returns ErrNotFound if
+// the DB does not contains the key.
+//
+// The caller should not modify the contents of the returned slice, but
+// it is safe to modify the contents of the argument after Get returns.
+func (snap *Snapshot) Get(key []byte, ro *opt.ReadOptions) (value []byte, err error) {
+ err = snap.db.ok()
+ if err != nil {
+ return
+ }
+ snap.mu.RLock()
+ defer snap.mu.RUnlock()
+ if snap.released {
+ err = ErrSnapshotReleased
+ return
+ }
+ return snap.db.get(nil, nil, key, snap.elem.seq, ro)
+}
+
+// Has returns true if the DB does contains the given key.
+//
+// It is safe to modify the contents of the argument after Get returns.
+func (snap *Snapshot) Has(key []byte, ro *opt.ReadOptions) (ret bool, err error) {
+ err = snap.db.ok()
+ if err != nil {
+ return
+ }
+ snap.mu.RLock()
+ defer snap.mu.RUnlock()
+ if snap.released {
+ err = ErrSnapshotReleased
+ return
+ }
+ return snap.db.has(nil, nil, key, snap.elem.seq, ro)
+}
+
+// NewIterator returns an iterator for the snapshot of the underlying DB.
+// The returned iterator is not safe for concurrent use, but it is safe to use
+// multiple iterators concurrently, with each in a dedicated goroutine.
+// It is also safe to use an iterator concurrently with modifying its
+// underlying DB. The resultant key/value pairs are guaranteed to be
+// consistent.
+//
+// Slice allows slicing the iterator to only contains keys in the given
+// range. A nil Range.Start is treated as a key before all keys in the
+// DB. And a nil Range.Limit is treated as a key after all keys in
+// the DB.
+//
+// WARNING: Any slice returned by interator (e.g. slice returned by calling
+// Iterator.Key() or Iterator.Value() methods), its content should not be
+// modified unless noted otherwise.
+//
+// The iterator must be released after use, by calling Release method.
+// Releasing the snapshot doesn't mean releasing the iterator too, the
+// iterator would be still valid until released.
+//
+// Also read Iterator documentation of the leveldb/iterator package.
+func (snap *Snapshot) NewIterator(slice *util.Range, ro *opt.ReadOptions) iterator.Iterator {
+ if err := snap.db.ok(); err != nil {
+ return iterator.NewEmptyIterator(err)
+ }
+ snap.mu.Lock()
+ defer snap.mu.Unlock()
+ if snap.released {
+ return iterator.NewEmptyIterator(ErrSnapshotReleased)
+ }
+ // Since iterator already hold version ref, it doesn't need to
+ // hold snapshot ref.
+ return snap.db.newIterator(nil, nil, snap.elem.seq, slice, ro)
+}
+
+// Release releases the snapshot. This will not release any returned
+// iterators, the iterators would still be valid until released or the
+// underlying DB is closed.
+//
+// Other methods should not be called after the snapshot has been released.
+func (snap *Snapshot) Release() {
+ snap.mu.Lock()
+ defer snap.mu.Unlock()
+
+ if !snap.released {
+ // Clear the finalizer.
+ runtime.SetFinalizer(snap, nil)
+
+ snap.released = true
+ snap.db.releaseSnapshot(snap.elem)
+ atomic.AddInt32(&snap.db.aliveSnaps, -1)
+ snap.db = nil
+ snap.elem = nil
+ }
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/db_state.go b/vendor/github.com/syndtr/goleveldb/leveldb/db_state.go
new file mode 100644
index 0000000..65e1c54
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/db_state.go
@@ -0,0 +1,239 @@
+// Copyright (c) 2013, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "errors"
+ "sync/atomic"
+ "time"
+
+ "github.com/syndtr/goleveldb/leveldb/journal"
+ "github.com/syndtr/goleveldb/leveldb/memdb"
+ "github.com/syndtr/goleveldb/leveldb/storage"
+)
+
+var (
+ errHasFrozenMem = errors.New("has frozen mem")
+)
+
+type memDB struct {
+ db *DB
+ *memdb.DB
+ ref int32
+}
+
+func (m *memDB) getref() int32 {
+ return atomic.LoadInt32(&m.ref)
+}
+
+func (m *memDB) incref() {
+ atomic.AddInt32(&m.ref, 1)
+}
+
+func (m *memDB) decref() {
+ if ref := atomic.AddInt32(&m.ref, -1); ref == 0 {
+ // Only put back memdb with std capacity.
+ if m.Capacity() == m.db.s.o.GetWriteBuffer() {
+ m.Reset()
+ m.db.mpoolPut(m.DB)
+ }
+ m.db = nil
+ m.DB = nil
+ } else if ref < 0 {
+ panic("negative memdb ref")
+ }
+}
+
+// Get latest sequence number.
+func (db *DB) getSeq() uint64 {
+ return atomic.LoadUint64(&db.seq)
+}
+
+// Atomically adds delta to seq.
+func (db *DB) addSeq(delta uint64) {
+ atomic.AddUint64(&db.seq, delta)
+}
+
+func (db *DB) setSeq(seq uint64) {
+ atomic.StoreUint64(&db.seq, seq)
+}
+
+func (db *DB) sampleSeek(ikey internalKey) {
+ v := db.s.version()
+ if v.sampleSeek(ikey) {
+ // Trigger table compaction.
+ db.compTrigger(db.tcompCmdC)
+ }
+ v.release()
+}
+
+func (db *DB) mpoolPut(mem *memdb.DB) {
+ if !db.isClosed() {
+ select {
+ case db.memPool <- mem:
+ default:
+ }
+ }
+}
+
+func (db *DB) mpoolGet(n int) *memDB {
+ var mdb *memdb.DB
+ select {
+ case mdb = <-db.memPool:
+ default:
+ }
+ if mdb == nil || mdb.Capacity() < n {
+ mdb = memdb.New(db.s.icmp, maxInt(db.s.o.GetWriteBuffer(), n))
+ }
+ return &memDB{
+ db: db,
+ DB: mdb,
+ }
+}
+
+func (db *DB) mpoolDrain() {
+ ticker := time.NewTicker(30 * time.Second)
+ for {
+ select {
+ case <-ticker.C:
+ select {
+ case <-db.memPool:
+ default:
+ }
+ case <-db.closeC:
+ ticker.Stop()
+ // Make sure the pool is drained.
+ select {
+ case <-db.memPool:
+ case <-time.After(time.Second):
+ }
+ close(db.memPool)
+ return
+ }
+ }
+}
+
+// Create new memdb and froze the old one; need external synchronization.
+// newMem only called synchronously by the writer.
+func (db *DB) newMem(n int) (mem *memDB, err error) {
+ fd := storage.FileDesc{Type: storage.TypeJournal, Num: db.s.allocFileNum()}
+ w, err := db.s.stor.Create(fd)
+ if err != nil {
+ db.s.reuseFileNum(fd.Num)
+ return
+ }
+
+ db.memMu.Lock()
+ defer db.memMu.Unlock()
+
+ if db.frozenMem != nil {
+ return nil, errHasFrozenMem
+ }
+
+ if db.journal == nil {
+ db.journal = journal.NewWriter(w)
+ } else {
+ db.journal.Reset(w)
+ db.journalWriter.Close()
+ db.frozenJournalFd = db.journalFd
+ }
+ db.journalWriter = w
+ db.journalFd = fd
+ db.frozenMem = db.mem
+ mem = db.mpoolGet(n)
+ mem.incref() // for self
+ mem.incref() // for caller
+ db.mem = mem
+ // The seq only incremented by the writer. And whoever called newMem
+ // should hold write lock, so no need additional synchronization here.
+ db.frozenSeq = db.seq
+ return
+}
+
+// Get all memdbs.
+func (db *DB) getMems() (e, f *memDB) {
+ db.memMu.RLock()
+ defer db.memMu.RUnlock()
+ if db.mem != nil {
+ db.mem.incref()
+ } else if !db.isClosed() {
+ panic("nil effective mem")
+ }
+ if db.frozenMem != nil {
+ db.frozenMem.incref()
+ }
+ return db.mem, db.frozenMem
+}
+
+// Get effective memdb.
+func (db *DB) getEffectiveMem() *memDB {
+ db.memMu.RLock()
+ defer db.memMu.RUnlock()
+ if db.mem != nil {
+ db.mem.incref()
+ } else if !db.isClosed() {
+ panic("nil effective mem")
+ }
+ return db.mem
+}
+
+// Check whether we has frozen memdb.
+func (db *DB) hasFrozenMem() bool {
+ db.memMu.RLock()
+ defer db.memMu.RUnlock()
+ return db.frozenMem != nil
+}
+
+// Get frozen memdb.
+func (db *DB) getFrozenMem() *memDB {
+ db.memMu.RLock()
+ defer db.memMu.RUnlock()
+ if db.frozenMem != nil {
+ db.frozenMem.incref()
+ }
+ return db.frozenMem
+}
+
+// Drop frozen memdb; assume that frozen memdb isn't nil.
+func (db *DB) dropFrozenMem() {
+ db.memMu.Lock()
+ if err := db.s.stor.Remove(db.frozenJournalFd); err != nil {
+ db.logf("journal@remove removing @%d %q", db.frozenJournalFd.Num, err)
+ } else {
+ db.logf("journal@remove removed @%d", db.frozenJournalFd.Num)
+ }
+ db.frozenJournalFd = storage.FileDesc{}
+ db.frozenMem.decref()
+ db.frozenMem = nil
+ db.memMu.Unlock()
+}
+
+// Clear mems ptr; used by DB.Close().
+func (db *DB) clearMems() {
+ db.memMu.Lock()
+ db.mem = nil
+ db.frozenMem = nil
+ db.memMu.Unlock()
+}
+
+// Set closed flag; return true if not already closed.
+func (db *DB) setClosed() bool {
+ return atomic.CompareAndSwapUint32(&db.closed, 0, 1)
+}
+
+// Check whether DB was closed.
+func (db *DB) isClosed() bool {
+ return atomic.LoadUint32(&db.closed) != 0
+}
+
+// Check read ok status.
+func (db *DB) ok() error {
+ if db.isClosed() {
+ return ErrClosed
+ }
+ return nil
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/db_transaction.go b/vendor/github.com/syndtr/goleveldb/leveldb/db_transaction.go
new file mode 100644
index 0000000..1a00001
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/db_transaction.go
@@ -0,0 +1,329 @@
+// Copyright (c) 2016, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "errors"
+ "sync"
+ "time"
+
+ "github.com/syndtr/goleveldb/leveldb/iterator"
+ "github.com/syndtr/goleveldb/leveldb/opt"
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+var errTransactionDone = errors.New("leveldb: transaction already closed")
+
+// Transaction is the transaction handle.
+type Transaction struct {
+ db *DB
+ lk sync.RWMutex
+ seq uint64
+ mem *memDB
+ tables tFiles
+ ikScratch []byte
+ rec sessionRecord
+ stats cStatStaging
+ closed bool
+}
+
+// Get gets the value for the given key. It returns ErrNotFound if the
+// DB does not contains the key.
+//
+// The returned slice is its own copy, it is safe to modify the contents
+// of the returned slice.
+// It is safe to modify the contents of the argument after Get returns.
+func (tr *Transaction) Get(key []byte, ro *opt.ReadOptions) ([]byte, error) {
+ tr.lk.RLock()
+ defer tr.lk.RUnlock()
+ if tr.closed {
+ return nil, errTransactionDone
+ }
+ return tr.db.get(tr.mem.DB, tr.tables, key, tr.seq, ro)
+}
+
+// Has returns true if the DB does contains the given key.
+//
+// It is safe to modify the contents of the argument after Has returns.
+func (tr *Transaction) Has(key []byte, ro *opt.ReadOptions) (bool, error) {
+ tr.lk.RLock()
+ defer tr.lk.RUnlock()
+ if tr.closed {
+ return false, errTransactionDone
+ }
+ return tr.db.has(tr.mem.DB, tr.tables, key, tr.seq, ro)
+}
+
+// NewIterator returns an iterator for the latest snapshot of the transaction.
+// The returned iterator is not safe for concurrent use, but it is safe to use
+// multiple iterators concurrently, with each in a dedicated goroutine.
+// It is also safe to use an iterator concurrently while writes to the
+// transaction. The resultant key/value pairs are guaranteed to be consistent.
+//
+// Slice allows slicing the iterator to only contains keys in the given
+// range. A nil Range.Start is treated as a key before all keys in the
+// DB. And a nil Range.Limit is treated as a key after all keys in
+// the DB.
+//
+// WARNING: Any slice returned by interator (e.g. slice returned by calling
+// Iterator.Key() or Iterator.Key() methods), its content should not be modified
+// unless noted otherwise.
+//
+// The iterator must be released after use, by calling Release method.
+//
+// Also read Iterator documentation of the leveldb/iterator package.
+func (tr *Transaction) NewIterator(slice *util.Range, ro *opt.ReadOptions) iterator.Iterator {
+ tr.lk.RLock()
+ defer tr.lk.RUnlock()
+ if tr.closed {
+ return iterator.NewEmptyIterator(errTransactionDone)
+ }
+ tr.mem.incref()
+ return tr.db.newIterator(tr.mem, tr.tables, tr.seq, slice, ro)
+}
+
+func (tr *Transaction) flush() error {
+ // Flush memdb.
+ if tr.mem.Len() != 0 {
+ tr.stats.startTimer()
+ iter := tr.mem.NewIterator(nil)
+ t, n, err := tr.db.s.tops.createFrom(iter)
+ iter.Release()
+ tr.stats.stopTimer()
+ if err != nil {
+ return err
+ }
+ if tr.mem.getref() == 1 {
+ tr.mem.Reset()
+ } else {
+ tr.mem.decref()
+ tr.mem = tr.db.mpoolGet(0)
+ tr.mem.incref()
+ }
+ tr.tables = append(tr.tables, t)
+ tr.rec.addTableFile(0, t)
+ tr.stats.write += t.size
+ tr.db.logf("transaction@flush created L0@%d N·%d S·%s %q:%q", t.fd.Num, n, shortenb(int(t.size)), t.imin, t.imax)
+ }
+ return nil
+}
+
+func (tr *Transaction) put(kt keyType, key, value []byte) error {
+ tr.ikScratch = makeInternalKey(tr.ikScratch, key, tr.seq+1, kt)
+ if tr.mem.Free() < len(tr.ikScratch)+len(value) {
+ if err := tr.flush(); err != nil {
+ return err
+ }
+ }
+ if err := tr.mem.Put(tr.ikScratch, value); err != nil {
+ return err
+ }
+ tr.seq++
+ return nil
+}
+
+// Put sets the value for the given key. It overwrites any previous value
+// for that key; a DB is not a multi-map.
+// Please note that the transaction is not compacted until committed, so if you
+// writes 10 same keys, then those 10 same keys are in the transaction.
+//
+// It is safe to modify the contents of the arguments after Put returns.
+func (tr *Transaction) Put(key, value []byte, wo *opt.WriteOptions) error {
+ tr.lk.Lock()
+ defer tr.lk.Unlock()
+ if tr.closed {
+ return errTransactionDone
+ }
+ return tr.put(keyTypeVal, key, value)
+}
+
+// Delete deletes the value for the given key.
+// Please note that the transaction is not compacted until committed, so if you
+// writes 10 same keys, then those 10 same keys are in the transaction.
+//
+// It is safe to modify the contents of the arguments after Delete returns.
+func (tr *Transaction) Delete(key []byte, wo *opt.WriteOptions) error {
+ tr.lk.Lock()
+ defer tr.lk.Unlock()
+ if tr.closed {
+ return errTransactionDone
+ }
+ return tr.put(keyTypeDel, key, nil)
+}
+
+// Write apply the given batch to the transaction. The batch will be applied
+// sequentially.
+// Please note that the transaction is not compacted until committed, so if you
+// writes 10 same keys, then those 10 same keys are in the transaction.
+//
+// It is safe to modify the contents of the arguments after Write returns.
+func (tr *Transaction) Write(b *Batch, wo *opt.WriteOptions) error {
+ if b == nil || b.Len() == 0 {
+ return nil
+ }
+
+ tr.lk.Lock()
+ defer tr.lk.Unlock()
+ if tr.closed {
+ return errTransactionDone
+ }
+ return b.replayInternal(func(i int, kt keyType, k, v []byte) error {
+ return tr.put(kt, k, v)
+ })
+}
+
+func (tr *Transaction) setDone() {
+ tr.closed = true
+ tr.db.tr = nil
+ tr.mem.decref()
+ <-tr.db.writeLockC
+}
+
+// Commit commits the transaction. If error is not nil, then the transaction is
+// not committed, it can then either be retried or discarded.
+//
+// Other methods should not be called after transaction has been committed.
+func (tr *Transaction) Commit() error {
+ if err := tr.db.ok(); err != nil {
+ return err
+ }
+
+ tr.lk.Lock()
+ defer tr.lk.Unlock()
+ if tr.closed {
+ return errTransactionDone
+ }
+ if err := tr.flush(); err != nil {
+ // Return error, lets user decide either to retry or discard
+ // transaction.
+ return err
+ }
+ if len(tr.tables) != 0 {
+ // Committing transaction.
+ tr.rec.setSeqNum(tr.seq)
+ tr.db.compCommitLk.Lock()
+ tr.stats.startTimer()
+ var cerr error
+ for retry := 0; retry < 3; retry++ {
+ cerr = tr.db.s.commit(&tr.rec)
+ if cerr != nil {
+ tr.db.logf("transaction@commit error R·%d %q", retry, cerr)
+ select {
+ case <-time.After(time.Second):
+ case <-tr.db.closeC:
+ tr.db.logf("transaction@commit exiting")
+ tr.db.compCommitLk.Unlock()
+ return cerr
+ }
+ } else {
+ // Success. Set db.seq.
+ tr.db.setSeq(tr.seq)
+ break
+ }
+ }
+ tr.stats.stopTimer()
+ if cerr != nil {
+ // Return error, lets user decide either to retry or discard
+ // transaction.
+ return cerr
+ }
+
+ // Update compaction stats. This is safe as long as we hold compCommitLk.
+ tr.db.compStats.addStat(0, &tr.stats)
+
+ // Trigger table auto-compaction.
+ tr.db.compTrigger(tr.db.tcompCmdC)
+ tr.db.compCommitLk.Unlock()
+
+ // Additionally, wait compaction when certain threshold reached.
+ // Ignore error, returns error only if transaction can't be committed.
+ tr.db.waitCompaction()
+ }
+ // Only mark as done if transaction committed successfully.
+ tr.setDone()
+ return nil
+}
+
+func (tr *Transaction) discard() {
+ // Discard transaction.
+ for _, t := range tr.tables {
+ tr.db.logf("transaction@discard @%d", t.fd.Num)
+ if err1 := tr.db.s.stor.Remove(t.fd); err1 == nil {
+ tr.db.s.reuseFileNum(t.fd.Num)
+ }
+ }
+}
+
+// Discard discards the transaction.
+//
+// Other methods should not be called after transaction has been discarded.
+func (tr *Transaction) Discard() {
+ tr.lk.Lock()
+ if !tr.closed {
+ tr.discard()
+ tr.setDone()
+ }
+ tr.lk.Unlock()
+}
+
+func (db *DB) waitCompaction() error {
+ if db.s.tLen(0) >= db.s.o.GetWriteL0PauseTrigger() {
+ return db.compTriggerWait(db.tcompCmdC)
+ }
+ return nil
+}
+
+// OpenTransaction opens an atomic DB transaction. Only one transaction can be
+// opened at a time. Subsequent call to Write and OpenTransaction will be blocked
+// until in-flight transaction is committed or discarded.
+// The returned transaction handle is safe for concurrent use.
+//
+// Transaction is expensive and can overwhelm compaction, especially if
+// transaction size is small. Use with caution.
+//
+// The transaction must be closed once done, either by committing or discarding
+// the transaction.
+// Closing the DB will discard open transaction.
+func (db *DB) OpenTransaction() (*Transaction, error) {
+ if err := db.ok(); err != nil {
+ return nil, err
+ }
+
+ // The write happen synchronously.
+ select {
+ case db.writeLockC <- struct{}{}:
+ case err := <-db.compPerErrC:
+ return nil, err
+ case <-db.closeC:
+ return nil, ErrClosed
+ }
+
+ if db.tr != nil {
+ panic("leveldb: has open transaction")
+ }
+
+ // Flush current memdb.
+ if db.mem != nil && db.mem.Len() != 0 {
+ if _, err := db.rotateMem(0, true); err != nil {
+ return nil, err
+ }
+ }
+
+ // Wait compaction when certain threshold reached.
+ if err := db.waitCompaction(); err != nil {
+ return nil, err
+ }
+
+ tr := &Transaction{
+ db: db,
+ seq: db.seq,
+ mem: db.mpoolGet(0),
+ }
+ tr.mem.incref()
+ db.tr = tr
+ return tr, nil
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/db_util.go b/vendor/github.com/syndtr/goleveldb/leveldb/db_util.go
new file mode 100644
index 0000000..3f06548
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/db_util.go
@@ -0,0 +1,102 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "github.com/syndtr/goleveldb/leveldb/errors"
+ "github.com/syndtr/goleveldb/leveldb/iterator"
+ "github.com/syndtr/goleveldb/leveldb/opt"
+ "github.com/syndtr/goleveldb/leveldb/storage"
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+// Reader is the interface that wraps basic Get and NewIterator methods.
+// This interface implemented by both DB and Snapshot.
+type Reader interface {
+ Get(key []byte, ro *opt.ReadOptions) (value []byte, err error)
+ NewIterator(slice *util.Range, ro *opt.ReadOptions) iterator.Iterator
+}
+
+// Sizes is list of size.
+type Sizes []int64
+
+// Sum returns sum of the sizes.
+func (sizes Sizes) Sum() int64 {
+ var sum int64
+ for _, size := range sizes {
+ sum += size
+ }
+ return sum
+}
+
+// Logging.
+func (db *DB) log(v ...interface{}) { db.s.log(v...) }
+func (db *DB) logf(format string, v ...interface{}) { db.s.logf(format, v...) }
+
+// Check and clean files.
+func (db *DB) checkAndCleanFiles() error {
+ v := db.s.version()
+ defer v.release()
+
+ tmap := make(map[int64]bool)
+ for _, tables := range v.levels {
+ for _, t := range tables {
+ tmap[t.fd.Num] = false
+ }
+ }
+
+ fds, err := db.s.stor.List(storage.TypeAll)
+ if err != nil {
+ return err
+ }
+
+ var nt int
+ var rem []storage.FileDesc
+ for _, fd := range fds {
+ keep := true
+ switch fd.Type {
+ case storage.TypeManifest:
+ keep = fd.Num >= db.s.manifestFd.Num
+ case storage.TypeJournal:
+ if !db.frozenJournalFd.Zero() {
+ keep = fd.Num >= db.frozenJournalFd.Num
+ } else {
+ keep = fd.Num >= db.journalFd.Num
+ }
+ case storage.TypeTable:
+ _, keep = tmap[fd.Num]
+ if keep {
+ tmap[fd.Num] = true
+ nt++
+ }
+ }
+
+ if !keep {
+ rem = append(rem, fd)
+ }
+ }
+
+ if nt != len(tmap) {
+ var mfds []storage.FileDesc
+ for num, present := range tmap {
+ if !present {
+ mfds = append(mfds, storage.FileDesc{Type: storage.TypeTable, Num: num})
+ db.logf("db@janitor table missing @%d", num)
+ }
+ }
+ return errors.NewErrCorrupted(storage.FileDesc{}, &errors.ErrMissingFiles{Fds: mfds})
+ }
+
+ db.logf("db@janitor F·%d G·%d", len(fds), len(rem))
+ for _, fd := range rem {
+ db.logf("db@janitor removing %s-%d", fd.Type, fd.Num)
+ if err := db.s.stor.Remove(fd); err != nil {
+ return err
+ }
+ }
+ return nil
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/db_write.go b/vendor/github.com/syndtr/goleveldb/leveldb/db_write.go
new file mode 100644
index 0000000..db0c1be
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/db_write.go
@@ -0,0 +1,464 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "sync/atomic"
+ "time"
+
+ "github.com/syndtr/goleveldb/leveldb/memdb"
+ "github.com/syndtr/goleveldb/leveldb/opt"
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+func (db *DB) writeJournal(batches []*Batch, seq uint64, sync bool) error {
+ wr, err := db.journal.Next()
+ if err != nil {
+ return err
+ }
+ if err := writeBatchesWithHeader(wr, batches, seq); err != nil {
+ return err
+ }
+ if err := db.journal.Flush(); err != nil {
+ return err
+ }
+ if sync {
+ return db.journalWriter.Sync()
+ }
+ return nil
+}
+
+func (db *DB) rotateMem(n int, wait bool) (mem *memDB, err error) {
+ retryLimit := 3
+retry:
+ // Wait for pending memdb compaction.
+ err = db.compTriggerWait(db.mcompCmdC)
+ if err != nil {
+ return
+ }
+ retryLimit--
+
+ // Create new memdb and journal.
+ mem, err = db.newMem(n)
+ if err != nil {
+ if err == errHasFrozenMem {
+ if retryLimit <= 0 {
+ panic("BUG: still has frozen memdb")
+ }
+ goto retry
+ }
+ return
+ }
+
+ // Schedule memdb compaction.
+ if wait {
+ err = db.compTriggerWait(db.mcompCmdC)
+ } else {
+ db.compTrigger(db.mcompCmdC)
+ }
+ return
+}
+
+func (db *DB) flush(n int) (mdb *memDB, mdbFree int, err error) {
+ delayed := false
+ slowdownTrigger := db.s.o.GetWriteL0SlowdownTrigger()
+ pauseTrigger := db.s.o.GetWriteL0PauseTrigger()
+ flush := func() (retry bool) {
+ mdb = db.getEffectiveMem()
+ if mdb == nil {
+ err = ErrClosed
+ return false
+ }
+ defer func() {
+ if retry {
+ mdb.decref()
+ mdb = nil
+ }
+ }()
+ tLen := db.s.tLen(0)
+ mdbFree = mdb.Free()
+ switch {
+ case tLen >= slowdownTrigger && !delayed:
+ delayed = true
+ time.Sleep(time.Millisecond)
+ case mdbFree >= n:
+ return false
+ case tLen >= pauseTrigger:
+ delayed = true
+ // Set the write paused flag explicitly.
+ atomic.StoreInt32(&db.inWritePaused, 1)
+ err = db.compTriggerWait(db.tcompCmdC)
+ // Unset the write paused flag.
+ atomic.StoreInt32(&db.inWritePaused, 0)
+ if err != nil {
+ return false
+ }
+ default:
+ // Allow memdb to grow if it has no entry.
+ if mdb.Len() == 0 {
+ mdbFree = n
+ } else {
+ mdb.decref()
+ mdb, err = db.rotateMem(n, false)
+ if err == nil {
+ mdbFree = mdb.Free()
+ } else {
+ mdbFree = 0
+ }
+ }
+ return false
+ }
+ return true
+ }
+ start := time.Now()
+ for flush() {
+ }
+ if delayed {
+ db.writeDelay += time.Since(start)
+ db.writeDelayN++
+ } else if db.writeDelayN > 0 {
+ db.logf("db@write was delayed N·%d T·%v", db.writeDelayN, db.writeDelay)
+ atomic.AddInt32(&db.cWriteDelayN, int32(db.writeDelayN))
+ atomic.AddInt64(&db.cWriteDelay, int64(db.writeDelay))
+ db.writeDelay = 0
+ db.writeDelayN = 0
+ }
+ return
+}
+
+type writeMerge struct {
+ sync bool
+ batch *Batch
+ keyType keyType
+ key, value []byte
+}
+
+func (db *DB) unlockWrite(overflow bool, merged int, err error) {
+ for i := 0; i < merged; i++ {
+ db.writeAckC <- err
+ }
+ if overflow {
+ // Pass lock to the next write (that failed to merge).
+ db.writeMergedC <- false
+ } else {
+ // Release lock.
+ <-db.writeLockC
+ }
+}
+
+// ourBatch is batch that we can modify.
+func (db *DB) writeLocked(batch, ourBatch *Batch, merge, sync bool) error {
+ // Try to flush memdb. This method would also trying to throttle writes
+ // if it is too fast and compaction cannot catch-up.
+ mdb, mdbFree, err := db.flush(batch.internalLen)
+ if err != nil {
+ db.unlockWrite(false, 0, err)
+ return err
+ }
+ defer mdb.decref()
+
+ var (
+ overflow bool
+ merged int
+ batches = []*Batch{batch}
+ )
+
+ if merge {
+ // Merge limit.
+ var mergeLimit int
+ if batch.internalLen > 128<<10 {
+ mergeLimit = (1 << 20) - batch.internalLen
+ } else {
+ mergeLimit = 128 << 10
+ }
+ mergeCap := mdbFree - batch.internalLen
+ if mergeLimit > mergeCap {
+ mergeLimit = mergeCap
+ }
+
+ merge:
+ for mergeLimit > 0 {
+ select {
+ case incoming := <-db.writeMergeC:
+ if incoming.batch != nil {
+ // Merge batch.
+ if incoming.batch.internalLen > mergeLimit {
+ overflow = true
+ break merge
+ }
+ batches = append(batches, incoming.batch)
+ mergeLimit -= incoming.batch.internalLen
+ } else {
+ // Merge put.
+ internalLen := len(incoming.key) + len(incoming.value) + 8
+ if internalLen > mergeLimit {
+ overflow = true
+ break merge
+ }
+ if ourBatch == nil {
+ ourBatch = db.batchPool.Get().(*Batch)
+ ourBatch.Reset()
+ batches = append(batches, ourBatch)
+ }
+ // We can use same batch since concurrent write doesn't
+ // guarantee write order.
+ ourBatch.appendRec(incoming.keyType, incoming.key, incoming.value)
+ mergeLimit -= internalLen
+ }
+ sync = sync || incoming.sync
+ merged++
+ db.writeMergedC <- true
+
+ default:
+ break merge
+ }
+ }
+ }
+
+ // Release ourBatch if any.
+ if ourBatch != nil {
+ defer db.batchPool.Put(ourBatch)
+ }
+
+ // Seq number.
+ seq := db.seq + 1
+
+ // Write journal.
+ if err := db.writeJournal(batches, seq, sync); err != nil {
+ db.unlockWrite(overflow, merged, err)
+ return err
+ }
+
+ // Put batches.
+ for _, batch := range batches {
+ if err := batch.putMem(seq, mdb.DB); err != nil {
+ panic(err)
+ }
+ seq += uint64(batch.Len())
+ }
+
+ // Incr seq number.
+ db.addSeq(uint64(batchesLen(batches)))
+
+ // Rotate memdb if it's reach the threshold.
+ if batch.internalLen >= mdbFree {
+ db.rotateMem(0, false)
+ }
+
+ db.unlockWrite(overflow, merged, nil)
+ return nil
+}
+
+// Write apply the given batch to the DB. The batch records will be applied
+// sequentially. Write might be used concurrently, when used concurrently and
+// batch is small enough, write will try to merge the batches. Set NoWriteMerge
+// option to true to disable write merge.
+//
+// It is safe to modify the contents of the arguments after Write returns but
+// not before. Write will not modify content of the batch.
+func (db *DB) Write(batch *Batch, wo *opt.WriteOptions) error {
+ if err := db.ok(); err != nil || batch == nil || batch.Len() == 0 {
+ return err
+ }
+
+ // If the batch size is larger than write buffer, it may justified to write
+ // using transaction instead. Using transaction the batch will be written
+ // into tables directly, skipping the journaling.
+ if batch.internalLen > db.s.o.GetWriteBuffer() && !db.s.o.GetDisableLargeBatchTransaction() {
+ tr, err := db.OpenTransaction()
+ if err != nil {
+ return err
+ }
+ if err := tr.Write(batch, wo); err != nil {
+ tr.Discard()
+ return err
+ }
+ return tr.Commit()
+ }
+
+ merge := !wo.GetNoWriteMerge() && !db.s.o.GetNoWriteMerge()
+ sync := wo.GetSync() && !db.s.o.GetNoSync()
+
+ // Acquire write lock.
+ if merge {
+ select {
+ case db.writeMergeC <- writeMerge{sync: sync, batch: batch}:
+ if <-db.writeMergedC {
+ // Write is merged.
+ return <-db.writeAckC
+ }
+ // Write is not merged, the write lock is handed to us. Continue.
+ case db.writeLockC <- struct{}{}:
+ // Write lock acquired.
+ case err := <-db.compPerErrC:
+ // Compaction error.
+ return err
+ case <-db.closeC:
+ // Closed
+ return ErrClosed
+ }
+ } else {
+ select {
+ case db.writeLockC <- struct{}{}:
+ // Write lock acquired.
+ case err := <-db.compPerErrC:
+ // Compaction error.
+ return err
+ case <-db.closeC:
+ // Closed
+ return ErrClosed
+ }
+ }
+
+ return db.writeLocked(batch, nil, merge, sync)
+}
+
+func (db *DB) putRec(kt keyType, key, value []byte, wo *opt.WriteOptions) error {
+ if err := db.ok(); err != nil {
+ return err
+ }
+
+ merge := !wo.GetNoWriteMerge() && !db.s.o.GetNoWriteMerge()
+ sync := wo.GetSync() && !db.s.o.GetNoSync()
+
+ // Acquire write lock.
+ if merge {
+ select {
+ case db.writeMergeC <- writeMerge{sync: sync, keyType: kt, key: key, value: value}:
+ if <-db.writeMergedC {
+ // Write is merged.
+ return <-db.writeAckC
+ }
+ // Write is not merged, the write lock is handed to us. Continue.
+ case db.writeLockC <- struct{}{}:
+ // Write lock acquired.
+ case err := <-db.compPerErrC:
+ // Compaction error.
+ return err
+ case <-db.closeC:
+ // Closed
+ return ErrClosed
+ }
+ } else {
+ select {
+ case db.writeLockC <- struct{}{}:
+ // Write lock acquired.
+ case err := <-db.compPerErrC:
+ // Compaction error.
+ return err
+ case <-db.closeC:
+ // Closed
+ return ErrClosed
+ }
+ }
+
+ batch := db.batchPool.Get().(*Batch)
+ batch.Reset()
+ batch.appendRec(kt, key, value)
+ return db.writeLocked(batch, batch, merge, sync)
+}
+
+// Put sets the value for the given key. It overwrites any previous value
+// for that key; a DB is not a multi-map. Write merge also applies for Put, see
+// Write.
+//
+// It is safe to modify the contents of the arguments after Put returns but not
+// before.
+func (db *DB) Put(key, value []byte, wo *opt.WriteOptions) error {
+ return db.putRec(keyTypeVal, key, value, wo)
+}
+
+// Delete deletes the value for the given key. Delete will not returns error if
+// key doesn't exist. Write merge also applies for Delete, see Write.
+//
+// It is safe to modify the contents of the arguments after Delete returns but
+// not before.
+func (db *DB) Delete(key []byte, wo *opt.WriteOptions) error {
+ return db.putRec(keyTypeDel, key, nil, wo)
+}
+
+func isMemOverlaps(icmp *iComparer, mem *memdb.DB, min, max []byte) bool {
+ iter := mem.NewIterator(nil)
+ defer iter.Release()
+ return (max == nil || (iter.First() && icmp.uCompare(max, internalKey(iter.Key()).ukey()) >= 0)) &&
+ (min == nil || (iter.Last() && icmp.uCompare(min, internalKey(iter.Key()).ukey()) <= 0))
+}
+
+// CompactRange compacts the underlying DB for the given key range.
+// In particular, deleted and overwritten versions are discarded,
+// and the data is rearranged to reduce the cost of operations
+// needed to access the data. This operation should typically only
+// be invoked by users who understand the underlying implementation.
+//
+// A nil Range.Start is treated as a key before all keys in the DB.
+// And a nil Range.Limit is treated as a key after all keys in the DB.
+// Therefore if both is nil then it will compact entire DB.
+func (db *DB) CompactRange(r util.Range) error {
+ if err := db.ok(); err != nil {
+ return err
+ }
+
+ // Lock writer.
+ select {
+ case db.writeLockC <- struct{}{}:
+ case err := <-db.compPerErrC:
+ return err
+ case <-db.closeC:
+ return ErrClosed
+ }
+
+ // Check for overlaps in memdb.
+ mdb := db.getEffectiveMem()
+ if mdb == nil {
+ return ErrClosed
+ }
+ defer mdb.decref()
+ if isMemOverlaps(db.s.icmp, mdb.DB, r.Start, r.Limit) {
+ // Memdb compaction.
+ if _, err := db.rotateMem(0, false); err != nil {
+ <-db.writeLockC
+ return err
+ }
+ <-db.writeLockC
+ if err := db.compTriggerWait(db.mcompCmdC); err != nil {
+ return err
+ }
+ } else {
+ <-db.writeLockC
+ }
+
+ // Table compaction.
+ return db.compTriggerRange(db.tcompCmdC, -1, r.Start, r.Limit)
+}
+
+// SetReadOnly makes DB read-only. It will stay read-only until reopened.
+func (db *DB) SetReadOnly() error {
+ if err := db.ok(); err != nil {
+ return err
+ }
+
+ // Lock writer.
+ select {
+ case db.writeLockC <- struct{}{}:
+ db.compWriteLocking = true
+ case err := <-db.compPerErrC:
+ return err
+ case <-db.closeC:
+ return ErrClosed
+ }
+
+ // Set compaction read-only.
+ select {
+ case db.compErrSetC <- ErrReadOnly:
+ case perr := <-db.compPerErrC:
+ return perr
+ case <-db.closeC:
+ return ErrClosed
+ }
+
+ return nil
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/doc.go b/vendor/github.com/syndtr/goleveldb/leveldb/doc.go
new file mode 100644
index 0000000..be768e5
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/doc.go
@@ -0,0 +1,92 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Package leveldb provides implementation of LevelDB key/value database.
+//
+// Create or open a database:
+//
+// // The returned DB instance is safe for concurrent use. Which mean that all
+// // DB's methods may be called concurrently from multiple goroutine.
+// db, err := leveldb.OpenFile("path/to/db", nil)
+// ...
+// defer db.Close()
+// ...
+//
+// Read or modify the database content:
+//
+// // Remember that the contents of the returned slice should not be modified.
+// data, err := db.Get([]byte("key"), nil)
+// ...
+// err = db.Put([]byte("key"), []byte("value"), nil)
+// ...
+// err = db.Delete([]byte("key"), nil)
+// ...
+//
+// Iterate over database content:
+//
+// iter := db.NewIterator(nil, nil)
+// for iter.Next() {
+// // Remember that the contents of the returned slice should not be modified, and
+// // only valid until the next call to Next.
+// key := iter.Key()
+// value := iter.Value()
+// ...
+// }
+// iter.Release()
+// err = iter.Error()
+// ...
+//
+// Iterate over subset of database content with a particular prefix:
+// iter := db.NewIterator(util.BytesPrefix([]byte("foo-")), nil)
+// for iter.Next() {
+// // Use key/value.
+// ...
+// }
+// iter.Release()
+// err = iter.Error()
+// ...
+//
+// Seek-then-Iterate:
+//
+// iter := db.NewIterator(nil, nil)
+// for ok := iter.Seek(key); ok; ok = iter.Next() {
+// // Use key/value.
+// ...
+// }
+// iter.Release()
+// err = iter.Error()
+// ...
+//
+// Iterate over subset of database content:
+//
+// iter := db.NewIterator(&util.Range{Start: []byte("foo"), Limit: []byte("xoo")}, nil)
+// for iter.Next() {
+// // Use key/value.
+// ...
+// }
+// iter.Release()
+// err = iter.Error()
+// ...
+//
+// Batch writes:
+//
+// batch := new(leveldb.Batch)
+// batch.Put([]byte("foo"), []byte("value"))
+// batch.Put([]byte("bar"), []byte("another value"))
+// batch.Delete([]byte("baz"))
+// err = db.Write(batch, nil)
+// ...
+//
+// Use bloom filter:
+//
+// o := &opt.Options{
+// Filter: filter.NewBloomFilter(10),
+// }
+// db, err := leveldb.OpenFile("path/to/db", o)
+// ...
+// defer db.Close()
+// ...
+package leveldb
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/errors.go b/vendor/github.com/syndtr/goleveldb/leveldb/errors.go
new file mode 100644
index 0000000..de26498
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/errors.go
@@ -0,0 +1,20 @@
+// Copyright (c) 2014, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "github.com/syndtr/goleveldb/leveldb/errors"
+)
+
+// Common errors.
+var (
+ ErrNotFound = errors.ErrNotFound
+ ErrReadOnly = errors.New("leveldb: read-only mode")
+ ErrSnapshotReleased = errors.New("leveldb: snapshot released")
+ ErrIterReleased = errors.New("leveldb: iterator released")
+ ErrClosed = errors.New("leveldb: closed")
+)
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/errors/errors.go b/vendor/github.com/syndtr/goleveldb/leveldb/errors/errors.go
new file mode 100644
index 0000000..8d6146b
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/errors/errors.go
@@ -0,0 +1,78 @@
+// Copyright (c) 2014, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Package errors provides common error types used throughout leveldb.
+package errors
+
+import (
+ "errors"
+ "fmt"
+
+ "github.com/syndtr/goleveldb/leveldb/storage"
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+// Common errors.
+var (
+ ErrNotFound = New("leveldb: not found")
+ ErrReleased = util.ErrReleased
+ ErrHasReleaser = util.ErrHasReleaser
+)
+
+// New returns an error that formats as the given text.
+func New(text string) error {
+ return errors.New(text)
+}
+
+// ErrCorrupted is the type that wraps errors that indicate corruption in
+// the database.
+type ErrCorrupted struct {
+ Fd storage.FileDesc
+ Err error
+}
+
+func (e *ErrCorrupted) Error() string {
+ if !e.Fd.Zero() {
+ return fmt.Sprintf("%v [file=%v]", e.Err, e.Fd)
+ }
+ return e.Err.Error()
+}
+
+// NewErrCorrupted creates new ErrCorrupted error.
+func NewErrCorrupted(fd storage.FileDesc, err error) error {
+ return &ErrCorrupted{fd, err}
+}
+
+// IsCorrupted returns a boolean indicating whether the error is indicating
+// a corruption.
+func IsCorrupted(err error) bool {
+ switch err.(type) {
+ case *ErrCorrupted:
+ return true
+ case *storage.ErrCorrupted:
+ return true
+ }
+ return false
+}
+
+// ErrMissingFiles is the type that indicating a corruption due to missing
+// files. ErrMissingFiles always wrapped with ErrCorrupted.
+type ErrMissingFiles struct {
+ Fds []storage.FileDesc
+}
+
+func (e *ErrMissingFiles) Error() string { return "file missing" }
+
+// SetFd sets 'file info' of the given error with the given file.
+// Currently only ErrCorrupted is supported, otherwise will do nothing.
+func SetFd(err error, fd storage.FileDesc) error {
+ switch x := err.(type) {
+ case *ErrCorrupted:
+ x.Fd = fd
+ return x
+ }
+ return err
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/filter.go b/vendor/github.com/syndtr/goleveldb/leveldb/filter.go
new file mode 100644
index 0000000..e961e42
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/filter.go
@@ -0,0 +1,31 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "github.com/syndtr/goleveldb/leveldb/filter"
+)
+
+type iFilter struct {
+ filter.Filter
+}
+
+func (f iFilter) Contains(filter, key []byte) bool {
+ return f.Filter.Contains(filter, internalKey(key).ukey())
+}
+
+func (f iFilter) NewGenerator() filter.FilterGenerator {
+ return iFilterGenerator{f.Filter.NewGenerator()}
+}
+
+type iFilterGenerator struct {
+ filter.FilterGenerator
+}
+
+func (g iFilterGenerator) Add(key []byte) {
+ g.FilterGenerator.Add(internalKey(key).ukey())
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/filter/bloom.go b/vendor/github.com/syndtr/goleveldb/leveldb/filter/bloom.go
new file mode 100644
index 0000000..bab0e99
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/filter/bloom.go
@@ -0,0 +1,116 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package filter
+
+import (
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+func bloomHash(key []byte) uint32 {
+ return util.Hash(key, 0xbc9f1d34)
+}
+
+type bloomFilter int
+
+// The bloom filter serializes its parameters and is backward compatible
+// with respect to them. Therefor, its parameters are not added to its
+// name.
+func (bloomFilter) Name() string {
+ return "leveldb.BuiltinBloomFilter"
+}
+
+func (f bloomFilter) Contains(filter, key []byte) bool {
+ nBytes := len(filter) - 1
+ if nBytes < 1 {
+ return false
+ }
+ nBits := uint32(nBytes * 8)
+
+ // Use the encoded k so that we can read filters generated by
+ // bloom filters created using different parameters.
+ k := filter[nBytes]
+ if k > 30 {
+ // Reserved for potentially new encodings for short bloom filters.
+ // Consider it a match.
+ return true
+ }
+
+ kh := bloomHash(key)
+ delta := (kh >> 17) | (kh << 15) // Rotate right 17 bits
+ for j := uint8(0); j < k; j++ {
+ bitpos := kh % nBits
+ if (uint32(filter[bitpos/8]) & (1 << (bitpos % 8))) == 0 {
+ return false
+ }
+ kh += delta
+ }
+ return true
+}
+
+func (f bloomFilter) NewGenerator() FilterGenerator {
+ // Round down to reduce probing cost a little bit.
+ k := uint8(f * 69 / 100) // 0.69 =~ ln(2)
+ if k < 1 {
+ k = 1
+ } else if k > 30 {
+ k = 30
+ }
+ return &bloomFilterGenerator{
+ n: int(f),
+ k: k,
+ }
+}
+
+type bloomFilterGenerator struct {
+ n int
+ k uint8
+
+ keyHashes []uint32
+}
+
+func (g *bloomFilterGenerator) Add(key []byte) {
+ // Use double-hashing to generate a sequence of hash values.
+ // See analysis in [Kirsch,Mitzenmacher 2006].
+ g.keyHashes = append(g.keyHashes, bloomHash(key))
+}
+
+func (g *bloomFilterGenerator) Generate(b Buffer) {
+ // Compute bloom filter size (in both bits and bytes)
+ nBits := uint32(len(g.keyHashes) * g.n)
+ // For small n, we can see a very high false positive rate. Fix it
+ // by enforcing a minimum bloom filter length.
+ if nBits < 64 {
+ nBits = 64
+ }
+ nBytes := (nBits + 7) / 8
+ nBits = nBytes * 8
+
+ dest := b.Alloc(int(nBytes) + 1)
+ dest[nBytes] = g.k
+ for _, kh := range g.keyHashes {
+ delta := (kh >> 17) | (kh << 15) // Rotate right 17 bits
+ for j := uint8(0); j < g.k; j++ {
+ bitpos := kh % nBits
+ dest[bitpos/8] |= (1 << (bitpos % 8))
+ kh += delta
+ }
+ }
+
+ g.keyHashes = g.keyHashes[:0]
+}
+
+// NewBloomFilter creates a new initialized bloom filter for given
+// bitsPerKey.
+//
+// Since bitsPerKey is persisted individually for each bloom filter
+// serialization, bloom filters are backwards compatible with respect to
+// changing bitsPerKey. This means that no big performance penalty will
+// be experienced when changing the parameter. See documentation for
+// opt.Options.Filter for more information.
+func NewBloomFilter(bitsPerKey int) Filter {
+ return bloomFilter(bitsPerKey)
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/filter/filter.go b/vendor/github.com/syndtr/goleveldb/leveldb/filter/filter.go
new file mode 100644
index 0000000..7a925c5
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/filter/filter.go
@@ -0,0 +1,60 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Package filter provides interface and implementation of probabilistic
+// data structure.
+//
+// The filter is resposible for creating small filter from a set of keys.
+// These filter will then used to test whether a key is a member of the set.
+// In many cases, a filter can cut down the number of disk seeks from a
+// handful to a single disk seek per DB.Get call.
+package filter
+
+// Buffer is the interface that wraps basic Alloc, Write and WriteByte methods.
+type Buffer interface {
+ // Alloc allocs n bytes of slice from the buffer. This also advancing
+ // write offset.
+ Alloc(n int) []byte
+
+ // Write appends the contents of p to the buffer.
+ Write(p []byte) (n int, err error)
+
+ // WriteByte appends the byte c to the buffer.
+ WriteByte(c byte) error
+}
+
+// Filter is the filter.
+type Filter interface {
+ // Name returns the name of this policy.
+ //
+ // Note that if the filter encoding changes in an incompatible way,
+ // the name returned by this method must be changed. Otherwise, old
+ // incompatible filters may be passed to methods of this type.
+ Name() string
+
+ // NewGenerator creates a new filter generator.
+ NewGenerator() FilterGenerator
+
+ // Contains returns true if the filter contains the given key.
+ //
+ // The filter are filters generated by the filter generator.
+ Contains(filter, key []byte) bool
+}
+
+// FilterGenerator is the filter generator.
+type FilterGenerator interface {
+ // Add adds a key to the filter generator.
+ //
+ // The key may become invalid after call to this method end, therefor
+ // key must be copied if implementation require keeping key for later
+ // use. The key should not modified directly, doing so may cause
+ // undefined results.
+ Add(key []byte)
+
+ // Generate generates filters based on keys passed so far. After call
+ // to Generate the filter generator maybe resetted, depends on implementation.
+ Generate(b Buffer)
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/iterator/array_iter.go b/vendor/github.com/syndtr/goleveldb/leveldb/iterator/array_iter.go
new file mode 100644
index 0000000..a23ab05
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/iterator/array_iter.go
@@ -0,0 +1,184 @@
+// Copyright (c) 2014, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package iterator
+
+import (
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+// BasicArray is the interface that wraps basic Len and Search method.
+type BasicArray interface {
+ // Len returns length of the array.
+ Len() int
+
+ // Search finds smallest index that point to a key that is greater
+ // than or equal to the given key.
+ Search(key []byte) int
+}
+
+// Array is the interface that wraps BasicArray and basic Index method.
+type Array interface {
+ BasicArray
+
+ // Index returns key/value pair with index of i.
+ Index(i int) (key, value []byte)
+}
+
+// Array is the interface that wraps BasicArray and basic Get method.
+type ArrayIndexer interface {
+ BasicArray
+
+ // Get returns a new data iterator with index of i.
+ Get(i int) Iterator
+}
+
+type basicArrayIterator struct {
+ util.BasicReleaser
+ array BasicArray
+ pos int
+ err error
+}
+
+func (i *basicArrayIterator) Valid() bool {
+ return i.pos >= 0 && i.pos < i.array.Len() && !i.Released()
+}
+
+func (i *basicArrayIterator) First() bool {
+ if i.Released() {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ if i.array.Len() == 0 {
+ i.pos = -1
+ return false
+ }
+ i.pos = 0
+ return true
+}
+
+func (i *basicArrayIterator) Last() bool {
+ if i.Released() {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ n := i.array.Len()
+ if n == 0 {
+ i.pos = 0
+ return false
+ }
+ i.pos = n - 1
+ return true
+}
+
+func (i *basicArrayIterator) Seek(key []byte) bool {
+ if i.Released() {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ n := i.array.Len()
+ if n == 0 {
+ i.pos = 0
+ return false
+ }
+ i.pos = i.array.Search(key)
+ if i.pos >= n {
+ return false
+ }
+ return true
+}
+
+func (i *basicArrayIterator) Next() bool {
+ if i.Released() {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ i.pos++
+ if n := i.array.Len(); i.pos >= n {
+ i.pos = n
+ return false
+ }
+ return true
+}
+
+func (i *basicArrayIterator) Prev() bool {
+ if i.Released() {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ i.pos--
+ if i.pos < 0 {
+ i.pos = -1
+ return false
+ }
+ return true
+}
+
+func (i *basicArrayIterator) Error() error { return i.err }
+
+type arrayIterator struct {
+ basicArrayIterator
+ array Array
+ pos int
+ key, value []byte
+}
+
+func (i *arrayIterator) updateKV() {
+ if i.pos == i.basicArrayIterator.pos {
+ return
+ }
+ i.pos = i.basicArrayIterator.pos
+ if i.Valid() {
+ i.key, i.value = i.array.Index(i.pos)
+ } else {
+ i.key = nil
+ i.value = nil
+ }
+}
+
+func (i *arrayIterator) Key() []byte {
+ i.updateKV()
+ return i.key
+}
+
+func (i *arrayIterator) Value() []byte {
+ i.updateKV()
+ return i.value
+}
+
+type arrayIteratorIndexer struct {
+ basicArrayIterator
+ array ArrayIndexer
+}
+
+func (i *arrayIteratorIndexer) Get() Iterator {
+ if i.Valid() {
+ return i.array.Get(i.basicArrayIterator.pos)
+ }
+ return nil
+}
+
+// NewArrayIterator returns an iterator from the given array.
+func NewArrayIterator(array Array) Iterator {
+ return &arrayIterator{
+ basicArrayIterator: basicArrayIterator{array: array, pos: -1},
+ array: array,
+ pos: -1,
+ }
+}
+
+// NewArrayIndexer returns an index iterator from the given array.
+func NewArrayIndexer(array ArrayIndexer) IteratorIndexer {
+ return &arrayIteratorIndexer{
+ basicArrayIterator: basicArrayIterator{array: array, pos: -1},
+ array: array,
+ }
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/iterator/indexed_iter.go b/vendor/github.com/syndtr/goleveldb/leveldb/iterator/indexed_iter.go
new file mode 100644
index 0000000..939adbb
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/iterator/indexed_iter.go
@@ -0,0 +1,242 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package iterator
+
+import (
+ "github.com/syndtr/goleveldb/leveldb/errors"
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+// IteratorIndexer is the interface that wraps CommonIterator and basic Get
+// method. IteratorIndexer provides index for indexed iterator.
+type IteratorIndexer interface {
+ CommonIterator
+
+ // Get returns a new data iterator for the current position, or nil if
+ // done.
+ Get() Iterator
+}
+
+type indexedIterator struct {
+ util.BasicReleaser
+ index IteratorIndexer
+ strict bool
+
+ data Iterator
+ err error
+ errf func(err error)
+ closed bool
+}
+
+func (i *indexedIterator) setData() {
+ if i.data != nil {
+ i.data.Release()
+ }
+ i.data = i.index.Get()
+}
+
+func (i *indexedIterator) clearData() {
+ if i.data != nil {
+ i.data.Release()
+ }
+ i.data = nil
+}
+
+func (i *indexedIterator) indexErr() {
+ if err := i.index.Error(); err != nil {
+ if i.errf != nil {
+ i.errf(err)
+ }
+ i.err = err
+ }
+}
+
+func (i *indexedIterator) dataErr() bool {
+ if err := i.data.Error(); err != nil {
+ if i.errf != nil {
+ i.errf(err)
+ }
+ if i.strict || !errors.IsCorrupted(err) {
+ i.err = err
+ return true
+ }
+ }
+ return false
+}
+
+func (i *indexedIterator) Valid() bool {
+ return i.data != nil && i.data.Valid()
+}
+
+func (i *indexedIterator) First() bool {
+ if i.err != nil {
+ return false
+ } else if i.Released() {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ if !i.index.First() {
+ i.indexErr()
+ i.clearData()
+ return false
+ }
+ i.setData()
+ return i.Next()
+}
+
+func (i *indexedIterator) Last() bool {
+ if i.err != nil {
+ return false
+ } else if i.Released() {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ if !i.index.Last() {
+ i.indexErr()
+ i.clearData()
+ return false
+ }
+ i.setData()
+ if !i.data.Last() {
+ if i.dataErr() {
+ return false
+ }
+ i.clearData()
+ return i.Prev()
+ }
+ return true
+}
+
+func (i *indexedIterator) Seek(key []byte) bool {
+ if i.err != nil {
+ return false
+ } else if i.Released() {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ if !i.index.Seek(key) {
+ i.indexErr()
+ i.clearData()
+ return false
+ }
+ i.setData()
+ if !i.data.Seek(key) {
+ if i.dataErr() {
+ return false
+ }
+ i.clearData()
+ return i.Next()
+ }
+ return true
+}
+
+func (i *indexedIterator) Next() bool {
+ if i.err != nil {
+ return false
+ } else if i.Released() {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ switch {
+ case i.data != nil && !i.data.Next():
+ if i.dataErr() {
+ return false
+ }
+ i.clearData()
+ fallthrough
+ case i.data == nil:
+ if !i.index.Next() {
+ i.indexErr()
+ return false
+ }
+ i.setData()
+ return i.Next()
+ }
+ return true
+}
+
+func (i *indexedIterator) Prev() bool {
+ if i.err != nil {
+ return false
+ } else if i.Released() {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ switch {
+ case i.data != nil && !i.data.Prev():
+ if i.dataErr() {
+ return false
+ }
+ i.clearData()
+ fallthrough
+ case i.data == nil:
+ if !i.index.Prev() {
+ i.indexErr()
+ return false
+ }
+ i.setData()
+ if !i.data.Last() {
+ if i.dataErr() {
+ return false
+ }
+ i.clearData()
+ return i.Prev()
+ }
+ }
+ return true
+}
+
+func (i *indexedIterator) Key() []byte {
+ if i.data == nil {
+ return nil
+ }
+ return i.data.Key()
+}
+
+func (i *indexedIterator) Value() []byte {
+ if i.data == nil {
+ return nil
+ }
+ return i.data.Value()
+}
+
+func (i *indexedIterator) Release() {
+ i.clearData()
+ i.index.Release()
+ i.BasicReleaser.Release()
+}
+
+func (i *indexedIterator) Error() error {
+ if i.err != nil {
+ return i.err
+ }
+ if err := i.index.Error(); err != nil {
+ return err
+ }
+ return nil
+}
+
+func (i *indexedIterator) SetErrorCallback(f func(err error)) {
+ i.errf = f
+}
+
+// NewIndexedIterator returns an 'indexed iterator'. An index is iterator
+// that returns another iterator, a 'data iterator'. A 'data iterator' is the
+// iterator that contains actual key/value pairs.
+//
+// If strict is true the any 'corruption errors' (i.e errors.IsCorrupted(err) == true)
+// won't be ignored and will halt 'indexed iterator', otherwise the iterator will
+// continue to the next 'data iterator'. Corruption on 'index iterator' will not be
+// ignored and will halt the iterator.
+func NewIndexedIterator(index IteratorIndexer, strict bool) Iterator {
+ return &indexedIterator{index: index, strict: strict}
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/iterator/iter.go b/vendor/github.com/syndtr/goleveldb/leveldb/iterator/iter.go
new file mode 100644
index 0000000..96fb0f6
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/iterator/iter.go
@@ -0,0 +1,132 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Package iterator provides interface and implementation to traverse over
+// contents of a database.
+package iterator
+
+import (
+ "errors"
+
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+var (
+ ErrIterReleased = errors.New("leveldb/iterator: iterator released")
+)
+
+// IteratorSeeker is the interface that wraps the 'seeks method'.
+type IteratorSeeker interface {
+ // First moves the iterator to the first key/value pair. If the iterator
+ // only contains one key/value pair then First and Last would moves
+ // to the same key/value pair.
+ // It returns whether such pair exist.
+ First() bool
+
+ // Last moves the iterator to the last key/value pair. If the iterator
+ // only contains one key/value pair then First and Last would moves
+ // to the same key/value pair.
+ // It returns whether such pair exist.
+ Last() bool
+
+ // Seek moves the iterator to the first key/value pair whose key is greater
+ // than or equal to the given key.
+ // It returns whether such pair exist.
+ //
+ // It is safe to modify the contents of the argument after Seek returns.
+ Seek(key []byte) bool
+
+ // Next moves the iterator to the next key/value pair.
+ // It returns false if the iterator is exhausted.
+ Next() bool
+
+ // Prev moves the iterator to the previous key/value pair.
+ // It returns false if the iterator is exhausted.
+ Prev() bool
+}
+
+// CommonIterator is the interface that wraps common iterator methods.
+type CommonIterator interface {
+ IteratorSeeker
+
+ // util.Releaser is the interface that wraps basic Release method.
+ // When called Release will releases any resources associated with the
+ // iterator.
+ util.Releaser
+
+ // util.ReleaseSetter is the interface that wraps the basic SetReleaser
+ // method.
+ util.ReleaseSetter
+
+ // TODO: Remove this when ready.
+ Valid() bool
+
+ // Error returns any accumulated error. Exhausting all the key/value pairs
+ // is not considered to be an error.
+ Error() error
+}
+
+// Iterator iterates over a DB's key/value pairs in key order.
+//
+// When encounter an error any 'seeks method' will return false and will
+// yield no key/value pairs. The error can be queried by calling the Error
+// method. Calling Release is still necessary.
+//
+// An iterator must be released after use, but it is not necessary to read
+// an iterator until exhaustion.
+// Also, an iterator is not necessarily safe for concurrent use, but it is
+// safe to use multiple iterators concurrently, with each in a dedicated
+// goroutine.
+type Iterator interface {
+ CommonIterator
+
+ // Key returns the key of the current key/value pair, or nil if done.
+ // The caller should not modify the contents of the returned slice, and
+ // its contents may change on the next call to any 'seeks method'.
+ Key() []byte
+
+ // Value returns the value of the current key/value pair, or nil if done.
+ // The caller should not modify the contents of the returned slice, and
+ // its contents may change on the next call to any 'seeks method'.
+ Value() []byte
+}
+
+// ErrorCallbackSetter is the interface that wraps basic SetErrorCallback
+// method.
+//
+// ErrorCallbackSetter implemented by indexed and merged iterator.
+type ErrorCallbackSetter interface {
+ // SetErrorCallback allows set an error callback of the corresponding
+ // iterator. Use nil to clear the callback.
+ SetErrorCallback(f func(err error))
+}
+
+type emptyIterator struct {
+ util.BasicReleaser
+ err error
+}
+
+func (i *emptyIterator) rErr() {
+ if i.err == nil && i.Released() {
+ i.err = ErrIterReleased
+ }
+}
+
+func (*emptyIterator) Valid() bool { return false }
+func (i *emptyIterator) First() bool { i.rErr(); return false }
+func (i *emptyIterator) Last() bool { i.rErr(); return false }
+func (i *emptyIterator) Seek(key []byte) bool { i.rErr(); return false }
+func (i *emptyIterator) Next() bool { i.rErr(); return false }
+func (i *emptyIterator) Prev() bool { i.rErr(); return false }
+func (*emptyIterator) Key() []byte { return nil }
+func (*emptyIterator) Value() []byte { return nil }
+func (i *emptyIterator) Error() error { return i.err }
+
+// NewEmptyIterator creates an empty iterator. The err parameter can be
+// nil, but if not nil the given err will be returned by Error method.
+func NewEmptyIterator(err error) Iterator {
+ return &emptyIterator{err: err}
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/iterator/merged_iter.go b/vendor/github.com/syndtr/goleveldb/leveldb/iterator/merged_iter.go
new file mode 100644
index 0000000..1a7e29d
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/iterator/merged_iter.go
@@ -0,0 +1,304 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package iterator
+
+import (
+ "github.com/syndtr/goleveldb/leveldb/comparer"
+ "github.com/syndtr/goleveldb/leveldb/errors"
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+type dir int
+
+const (
+ dirReleased dir = iota - 1
+ dirSOI
+ dirEOI
+ dirBackward
+ dirForward
+)
+
+type mergedIterator struct {
+ cmp comparer.Comparer
+ iters []Iterator
+ strict bool
+
+ keys [][]byte
+ index int
+ dir dir
+ err error
+ errf func(err error)
+ releaser util.Releaser
+}
+
+func assertKey(key []byte) []byte {
+ if key == nil {
+ panic("leveldb/iterator: nil key")
+ }
+ return key
+}
+
+func (i *mergedIterator) iterErr(iter Iterator) bool {
+ if err := iter.Error(); err != nil {
+ if i.errf != nil {
+ i.errf(err)
+ }
+ if i.strict || !errors.IsCorrupted(err) {
+ i.err = err
+ return true
+ }
+ }
+ return false
+}
+
+func (i *mergedIterator) Valid() bool {
+ return i.err == nil && i.dir > dirEOI
+}
+
+func (i *mergedIterator) First() bool {
+ if i.err != nil {
+ return false
+ } else if i.dir == dirReleased {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ for x, iter := range i.iters {
+ switch {
+ case iter.First():
+ i.keys[x] = assertKey(iter.Key())
+ case i.iterErr(iter):
+ return false
+ default:
+ i.keys[x] = nil
+ }
+ }
+ i.dir = dirSOI
+ return i.next()
+}
+
+func (i *mergedIterator) Last() bool {
+ if i.err != nil {
+ return false
+ } else if i.dir == dirReleased {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ for x, iter := range i.iters {
+ switch {
+ case iter.Last():
+ i.keys[x] = assertKey(iter.Key())
+ case i.iterErr(iter):
+ return false
+ default:
+ i.keys[x] = nil
+ }
+ }
+ i.dir = dirEOI
+ return i.prev()
+}
+
+func (i *mergedIterator) Seek(key []byte) bool {
+ if i.err != nil {
+ return false
+ } else if i.dir == dirReleased {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ for x, iter := range i.iters {
+ switch {
+ case iter.Seek(key):
+ i.keys[x] = assertKey(iter.Key())
+ case i.iterErr(iter):
+ return false
+ default:
+ i.keys[x] = nil
+ }
+ }
+ i.dir = dirSOI
+ return i.next()
+}
+
+func (i *mergedIterator) next() bool {
+ var key []byte
+ if i.dir == dirForward {
+ key = i.keys[i.index]
+ }
+ for x, tkey := range i.keys {
+ if tkey != nil && (key == nil || i.cmp.Compare(tkey, key) < 0) {
+ key = tkey
+ i.index = x
+ }
+ }
+ if key == nil {
+ i.dir = dirEOI
+ return false
+ }
+ i.dir = dirForward
+ return true
+}
+
+func (i *mergedIterator) Next() bool {
+ if i.dir == dirEOI || i.err != nil {
+ return false
+ } else if i.dir == dirReleased {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ switch i.dir {
+ case dirSOI:
+ return i.First()
+ case dirBackward:
+ key := append([]byte{}, i.keys[i.index]...)
+ if !i.Seek(key) {
+ return false
+ }
+ return i.Next()
+ }
+
+ x := i.index
+ iter := i.iters[x]
+ switch {
+ case iter.Next():
+ i.keys[x] = assertKey(iter.Key())
+ case i.iterErr(iter):
+ return false
+ default:
+ i.keys[x] = nil
+ }
+ return i.next()
+}
+
+func (i *mergedIterator) prev() bool {
+ var key []byte
+ if i.dir == dirBackward {
+ key = i.keys[i.index]
+ }
+ for x, tkey := range i.keys {
+ if tkey != nil && (key == nil || i.cmp.Compare(tkey, key) > 0) {
+ key = tkey
+ i.index = x
+ }
+ }
+ if key == nil {
+ i.dir = dirSOI
+ return false
+ }
+ i.dir = dirBackward
+ return true
+}
+
+func (i *mergedIterator) Prev() bool {
+ if i.dir == dirSOI || i.err != nil {
+ return false
+ } else if i.dir == dirReleased {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ switch i.dir {
+ case dirEOI:
+ return i.Last()
+ case dirForward:
+ key := append([]byte{}, i.keys[i.index]...)
+ for x, iter := range i.iters {
+ if x == i.index {
+ continue
+ }
+ seek := iter.Seek(key)
+ switch {
+ case seek && iter.Prev(), !seek && iter.Last():
+ i.keys[x] = assertKey(iter.Key())
+ case i.iterErr(iter):
+ return false
+ default:
+ i.keys[x] = nil
+ }
+ }
+ }
+
+ x := i.index
+ iter := i.iters[x]
+ switch {
+ case iter.Prev():
+ i.keys[x] = assertKey(iter.Key())
+ case i.iterErr(iter):
+ return false
+ default:
+ i.keys[x] = nil
+ }
+ return i.prev()
+}
+
+func (i *mergedIterator) Key() []byte {
+ if i.err != nil || i.dir <= dirEOI {
+ return nil
+ }
+ return i.keys[i.index]
+}
+
+func (i *mergedIterator) Value() []byte {
+ if i.err != nil || i.dir <= dirEOI {
+ return nil
+ }
+ return i.iters[i.index].Value()
+}
+
+func (i *mergedIterator) Release() {
+ if i.dir != dirReleased {
+ i.dir = dirReleased
+ for _, iter := range i.iters {
+ iter.Release()
+ }
+ i.iters = nil
+ i.keys = nil
+ if i.releaser != nil {
+ i.releaser.Release()
+ i.releaser = nil
+ }
+ }
+}
+
+func (i *mergedIterator) SetReleaser(releaser util.Releaser) {
+ if i.dir == dirReleased {
+ panic(util.ErrReleased)
+ }
+ if i.releaser != nil && releaser != nil {
+ panic(util.ErrHasReleaser)
+ }
+ i.releaser = releaser
+}
+
+func (i *mergedIterator) Error() error {
+ return i.err
+}
+
+func (i *mergedIterator) SetErrorCallback(f func(err error)) {
+ i.errf = f
+}
+
+// NewMergedIterator returns an iterator that merges its input. Walking the
+// resultant iterator will return all key/value pairs of all input iterators
+// in strictly increasing key order, as defined by cmp.
+// The input's key ranges may overlap, but there are assumed to be no duplicate
+// keys: if iters[i] contains a key k then iters[j] will not contain that key k.
+// None of the iters may be nil.
+//
+// If strict is true the any 'corruption errors' (i.e errors.IsCorrupted(err) == true)
+// won't be ignored and will halt 'merged iterator', otherwise the iterator will
+// continue to the next 'input iterator'.
+func NewMergedIterator(iters []Iterator, cmp comparer.Comparer, strict bool) Iterator {
+ return &mergedIterator{
+ iters: iters,
+ cmp: cmp,
+ strict: strict,
+ keys: make([][]byte, len(iters)),
+ }
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/journal/journal.go b/vendor/github.com/syndtr/goleveldb/leveldb/journal/journal.go
new file mode 100644
index 0000000..d094c3d
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/journal/journal.go
@@ -0,0 +1,524 @@
+// Copyright 2011 The LevelDB-Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Taken from: https://code.google.com/p/leveldb-go/source/browse/leveldb/record/record.go?r=1d5ccbe03246da926391ee12d1c6caae054ff4b0
+// License, authors and contributors informations can be found at bellow URLs respectively:
+// https://code.google.com/p/leveldb-go/source/browse/LICENSE
+// https://code.google.com/p/leveldb-go/source/browse/AUTHORS
+// https://code.google.com/p/leveldb-go/source/browse/CONTRIBUTORS
+
+// Package journal reads and writes sequences of journals. Each journal is a stream
+// of bytes that completes before the next journal starts.
+//
+// When reading, call Next to obtain an io.Reader for the next journal. Next will
+// return io.EOF when there are no more journals. It is valid to call Next
+// without reading the current journal to exhaustion.
+//
+// When writing, call Next to obtain an io.Writer for the next journal. Calling
+// Next finishes the current journal. Call Close to finish the final journal.
+//
+// Optionally, call Flush to finish the current journal and flush the underlying
+// writer without starting a new journal. To start a new journal after flushing,
+// call Next.
+//
+// Neither Readers or Writers are safe to use concurrently.
+//
+// Example code:
+// func read(r io.Reader) ([]string, error) {
+// var ss []string
+// journals := journal.NewReader(r, nil, true, true)
+// for {
+// j, err := journals.Next()
+// if err == io.EOF {
+// break
+// }
+// if err != nil {
+// return nil, err
+// }
+// s, err := ioutil.ReadAll(j)
+// if err != nil {
+// return nil, err
+// }
+// ss = append(ss, string(s))
+// }
+// return ss, nil
+// }
+//
+// func write(w io.Writer, ss []string) error {
+// journals := journal.NewWriter(w)
+// for _, s := range ss {
+// j, err := journals.Next()
+// if err != nil {
+// return err
+// }
+// if _, err := j.Write([]byte(s)), err != nil {
+// return err
+// }
+// }
+// return journals.Close()
+// }
+//
+// The wire format is that the stream is divided into 32KiB blocks, and each
+// block contains a number of tightly packed chunks. Chunks cannot cross block
+// boundaries. The last block may be shorter than 32 KiB. Any unused bytes in a
+// block must be zero.
+//
+// A journal maps to one or more chunks. Each chunk has a 7 byte header (a 4
+// byte checksum, a 2 byte little-endian uint16 length, and a 1 byte chunk type)
+// followed by a payload. The checksum is over the chunk type and the payload.
+//
+// There are four chunk types: whether the chunk is the full journal, or the
+// first, middle or last chunk of a multi-chunk journal. A multi-chunk journal
+// has one first chunk, zero or more middle chunks, and one last chunk.
+//
+// The wire format allows for limited recovery in the face of data corruption:
+// on a format error (such as a checksum mismatch), the reader moves to the
+// next block and looks for the next full or first chunk.
+package journal
+
+import (
+ "encoding/binary"
+ "fmt"
+ "io"
+
+ "github.com/syndtr/goleveldb/leveldb/errors"
+ "github.com/syndtr/goleveldb/leveldb/storage"
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+// These constants are part of the wire format and should not be changed.
+const (
+ fullChunkType = 1
+ firstChunkType = 2
+ middleChunkType = 3
+ lastChunkType = 4
+)
+
+const (
+ blockSize = 32 * 1024
+ headerSize = 7
+)
+
+type flusher interface {
+ Flush() error
+}
+
+// ErrCorrupted is the error type that generated by corrupted block or chunk.
+type ErrCorrupted struct {
+ Size int
+ Reason string
+}
+
+func (e *ErrCorrupted) Error() string {
+ return fmt.Sprintf("leveldb/journal: block/chunk corrupted: %s (%d bytes)", e.Reason, e.Size)
+}
+
+// Dropper is the interface that wrap simple Drop method. The Drop
+// method will be called when the journal reader dropping a block or chunk.
+type Dropper interface {
+ Drop(err error)
+}
+
+// Reader reads journals from an underlying io.Reader.
+type Reader struct {
+ // r is the underlying reader.
+ r io.Reader
+ // the dropper.
+ dropper Dropper
+ // strict flag.
+ strict bool
+ // checksum flag.
+ checksum bool
+ // seq is the sequence number of the current journal.
+ seq int
+ // buf[i:j] is the unread portion of the current chunk's payload.
+ // The low bound, i, excludes the chunk header.
+ i, j int
+ // n is the number of bytes of buf that are valid. Once reading has started,
+ // only the final block can have n < blockSize.
+ n int
+ // last is whether the current chunk is the last chunk of the journal.
+ last bool
+ // err is any accumulated error.
+ err error
+ // buf is the buffer.
+ buf [blockSize]byte
+}
+
+// NewReader returns a new reader. The dropper may be nil, and if
+// strict is true then corrupted or invalid chunk will halt the journal
+// reader entirely.
+func NewReader(r io.Reader, dropper Dropper, strict, checksum bool) *Reader {
+ return &Reader{
+ r: r,
+ dropper: dropper,
+ strict: strict,
+ checksum: checksum,
+ last: true,
+ }
+}
+
+var errSkip = errors.New("leveldb/journal: skipped")
+
+func (r *Reader) corrupt(n int, reason string, skip bool) error {
+ if r.dropper != nil {
+ r.dropper.Drop(&ErrCorrupted{n, reason})
+ }
+ if r.strict && !skip {
+ r.err = errors.NewErrCorrupted(storage.FileDesc{}, &ErrCorrupted{n, reason})
+ return r.err
+ }
+ return errSkip
+}
+
+// nextChunk sets r.buf[r.i:r.j] to hold the next chunk's payload, reading the
+// next block into the buffer if necessary.
+func (r *Reader) nextChunk(first bool) error {
+ for {
+ if r.j+headerSize <= r.n {
+ checksum := binary.LittleEndian.Uint32(r.buf[r.j+0 : r.j+4])
+ length := binary.LittleEndian.Uint16(r.buf[r.j+4 : r.j+6])
+ chunkType := r.buf[r.j+6]
+ unprocBlock := r.n - r.j
+ if checksum == 0 && length == 0 && chunkType == 0 {
+ // Drop entire block.
+ r.i = r.n
+ r.j = r.n
+ return r.corrupt(unprocBlock, "zero header", false)
+ }
+ if chunkType < fullChunkType || chunkType > lastChunkType {
+ // Drop entire block.
+ r.i = r.n
+ r.j = r.n
+ return r.corrupt(unprocBlock, fmt.Sprintf("invalid chunk type %#x", chunkType), false)
+ }
+ r.i = r.j + headerSize
+ r.j = r.j + headerSize + int(length)
+ if r.j > r.n {
+ // Drop entire block.
+ r.i = r.n
+ r.j = r.n
+ return r.corrupt(unprocBlock, "chunk length overflows block", false)
+ } else if r.checksum && checksum != util.NewCRC(r.buf[r.i-1:r.j]).Value() {
+ // Drop entire block.
+ r.i = r.n
+ r.j = r.n
+ return r.corrupt(unprocBlock, "checksum mismatch", false)
+ }
+ if first && chunkType != fullChunkType && chunkType != firstChunkType {
+ chunkLength := (r.j - r.i) + headerSize
+ r.i = r.j
+ // Report the error, but skip it.
+ return r.corrupt(chunkLength, "orphan chunk", true)
+ }
+ r.last = chunkType == fullChunkType || chunkType == lastChunkType
+ return nil
+ }
+
+ // The last block.
+ if r.n < blockSize && r.n > 0 {
+ if !first {
+ return r.corrupt(0, "missing chunk part", false)
+ }
+ r.err = io.EOF
+ return r.err
+ }
+
+ // Read block.
+ n, err := io.ReadFull(r.r, r.buf[:])
+ if err != nil && err != io.EOF && err != io.ErrUnexpectedEOF {
+ return err
+ }
+ if n == 0 {
+ if !first {
+ return r.corrupt(0, "missing chunk part", false)
+ }
+ r.err = io.EOF
+ return r.err
+ }
+ r.i, r.j, r.n = 0, 0, n
+ }
+}
+
+// Next returns a reader for the next journal. It returns io.EOF if there are no
+// more journals. The reader returned becomes stale after the next Next call,
+// and should no longer be used. If strict is false, the reader will returns
+// io.ErrUnexpectedEOF error when found corrupted journal.
+func (r *Reader) Next() (io.Reader, error) {
+ r.seq++
+ if r.err != nil {
+ return nil, r.err
+ }
+ r.i = r.j
+ for {
+ if err := r.nextChunk(true); err == nil {
+ break
+ } else if err != errSkip {
+ return nil, err
+ }
+ }
+ return &singleReader{r, r.seq, nil}, nil
+}
+
+// Reset resets the journal reader, allows reuse of the journal reader. Reset returns
+// last accumulated error.
+func (r *Reader) Reset(reader io.Reader, dropper Dropper, strict, checksum bool) error {
+ r.seq++
+ err := r.err
+ r.r = reader
+ r.dropper = dropper
+ r.strict = strict
+ r.checksum = checksum
+ r.i = 0
+ r.j = 0
+ r.n = 0
+ r.last = true
+ r.err = nil
+ return err
+}
+
+type singleReader struct {
+ r *Reader
+ seq int
+ err error
+}
+
+func (x *singleReader) Read(p []byte) (int, error) {
+ r := x.r
+ if r.seq != x.seq {
+ return 0, errors.New("leveldb/journal: stale reader")
+ }
+ if x.err != nil {
+ return 0, x.err
+ }
+ if r.err != nil {
+ return 0, r.err
+ }
+ for r.i == r.j {
+ if r.last {
+ return 0, io.EOF
+ }
+ x.err = r.nextChunk(false)
+ if x.err != nil {
+ if x.err == errSkip {
+ x.err = io.ErrUnexpectedEOF
+ }
+ return 0, x.err
+ }
+ }
+ n := copy(p, r.buf[r.i:r.j])
+ r.i += n
+ return n, nil
+}
+
+func (x *singleReader) ReadByte() (byte, error) {
+ r := x.r
+ if r.seq != x.seq {
+ return 0, errors.New("leveldb/journal: stale reader")
+ }
+ if x.err != nil {
+ return 0, x.err
+ }
+ if r.err != nil {
+ return 0, r.err
+ }
+ for r.i == r.j {
+ if r.last {
+ return 0, io.EOF
+ }
+ x.err = r.nextChunk(false)
+ if x.err != nil {
+ if x.err == errSkip {
+ x.err = io.ErrUnexpectedEOF
+ }
+ return 0, x.err
+ }
+ }
+ c := r.buf[r.i]
+ r.i++
+ return c, nil
+}
+
+// Writer writes journals to an underlying io.Writer.
+type Writer struct {
+ // w is the underlying writer.
+ w io.Writer
+ // seq is the sequence number of the current journal.
+ seq int
+ // f is w as a flusher.
+ f flusher
+ // buf[i:j] is the bytes that will become the current chunk.
+ // The low bound, i, includes the chunk header.
+ i, j int
+ // buf[:written] has already been written to w.
+ // written is zero unless Flush has been called.
+ written int
+ // first is whether the current chunk is the first chunk of the journal.
+ first bool
+ // pending is whether a chunk is buffered but not yet written.
+ pending bool
+ // err is any accumulated error.
+ err error
+ // buf is the buffer.
+ buf [blockSize]byte
+}
+
+// NewWriter returns a new Writer.
+func NewWriter(w io.Writer) *Writer {
+ f, _ := w.(flusher)
+ return &Writer{
+ w: w,
+ f: f,
+ }
+}
+
+// fillHeader fills in the header for the pending chunk.
+func (w *Writer) fillHeader(last bool) {
+ if w.i+headerSize > w.j || w.j > blockSize {
+ panic("leveldb/journal: bad writer state")
+ }
+ if last {
+ if w.first {
+ w.buf[w.i+6] = fullChunkType
+ } else {
+ w.buf[w.i+6] = lastChunkType
+ }
+ } else {
+ if w.first {
+ w.buf[w.i+6] = firstChunkType
+ } else {
+ w.buf[w.i+6] = middleChunkType
+ }
+ }
+ binary.LittleEndian.PutUint32(w.buf[w.i+0:w.i+4], util.NewCRC(w.buf[w.i+6:w.j]).Value())
+ binary.LittleEndian.PutUint16(w.buf[w.i+4:w.i+6], uint16(w.j-w.i-headerSize))
+}
+
+// writeBlock writes the buffered block to the underlying writer, and reserves
+// space for the next chunk's header.
+func (w *Writer) writeBlock() {
+ _, w.err = w.w.Write(w.buf[w.written:])
+ w.i = 0
+ w.j = headerSize
+ w.written = 0
+}
+
+// writePending finishes the current journal and writes the buffer to the
+// underlying writer.
+func (w *Writer) writePending() {
+ if w.err != nil {
+ return
+ }
+ if w.pending {
+ w.fillHeader(true)
+ w.pending = false
+ }
+ _, w.err = w.w.Write(w.buf[w.written:w.j])
+ w.written = w.j
+}
+
+// Close finishes the current journal and closes the writer.
+func (w *Writer) Close() error {
+ w.seq++
+ w.writePending()
+ if w.err != nil {
+ return w.err
+ }
+ w.err = errors.New("leveldb/journal: closed Writer")
+ return nil
+}
+
+// Flush finishes the current journal, writes to the underlying writer, and
+// flushes it if that writer implements interface{ Flush() error }.
+func (w *Writer) Flush() error {
+ w.seq++
+ w.writePending()
+ if w.err != nil {
+ return w.err
+ }
+ if w.f != nil {
+ w.err = w.f.Flush()
+ return w.err
+ }
+ return nil
+}
+
+// Reset resets the journal writer, allows reuse of the journal writer. Reset
+// will also closes the journal writer if not already.
+func (w *Writer) Reset(writer io.Writer) (err error) {
+ w.seq++
+ if w.err == nil {
+ w.writePending()
+ err = w.err
+ }
+ w.w = writer
+ w.f, _ = writer.(flusher)
+ w.i = 0
+ w.j = 0
+ w.written = 0
+ w.first = false
+ w.pending = false
+ w.err = nil
+ return
+}
+
+// Next returns a writer for the next journal. The writer returned becomes stale
+// after the next Close, Flush or Next call, and should no longer be used.
+func (w *Writer) Next() (io.Writer, error) {
+ w.seq++
+ if w.err != nil {
+ return nil, w.err
+ }
+ if w.pending {
+ w.fillHeader(true)
+ }
+ w.i = w.j
+ w.j = w.j + headerSize
+ // Check if there is room in the block for the header.
+ if w.j > blockSize {
+ // Fill in the rest of the block with zeroes.
+ for k := w.i; k < blockSize; k++ {
+ w.buf[k] = 0
+ }
+ w.writeBlock()
+ if w.err != nil {
+ return nil, w.err
+ }
+ }
+ w.first = true
+ w.pending = true
+ return singleWriter{w, w.seq}, nil
+}
+
+type singleWriter struct {
+ w *Writer
+ seq int
+}
+
+func (x singleWriter) Write(p []byte) (int, error) {
+ w := x.w
+ if w.seq != x.seq {
+ return 0, errors.New("leveldb/journal: stale writer")
+ }
+ if w.err != nil {
+ return 0, w.err
+ }
+ n0 := len(p)
+ for len(p) > 0 {
+ // Write a block, if it is full.
+ if w.j == blockSize {
+ w.fillHeader(false)
+ w.writeBlock()
+ if w.err != nil {
+ return 0, w.err
+ }
+ w.first = false
+ }
+ // Copy bytes into the buffer.
+ n := copy(w.buf[w.j:], p)
+ w.j += n
+ p = p[n:]
+ }
+ return n0, nil
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/key.go b/vendor/github.com/syndtr/goleveldb/leveldb/key.go
new file mode 100644
index 0000000..ad8f51e
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/key.go
@@ -0,0 +1,143 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "encoding/binary"
+ "fmt"
+
+ "github.com/syndtr/goleveldb/leveldb/errors"
+ "github.com/syndtr/goleveldb/leveldb/storage"
+)
+
+// ErrInternalKeyCorrupted records internal key corruption.
+type ErrInternalKeyCorrupted struct {
+ Ikey []byte
+ Reason string
+}
+
+func (e *ErrInternalKeyCorrupted) Error() string {
+ return fmt.Sprintf("leveldb: internal key %q corrupted: %s", e.Ikey, e.Reason)
+}
+
+func newErrInternalKeyCorrupted(ikey []byte, reason string) error {
+ return errors.NewErrCorrupted(storage.FileDesc{}, &ErrInternalKeyCorrupted{append([]byte{}, ikey...), reason})
+}
+
+type keyType uint
+
+func (kt keyType) String() string {
+ switch kt {
+ case keyTypeDel:
+ return "d"
+ case keyTypeVal:
+ return "v"
+ }
+ return fmt.Sprintf("", uint(kt))
+}
+
+// Value types encoded as the last component of internal keys.
+// Don't modify; this value are saved to disk.
+const (
+ keyTypeDel = keyType(0)
+ keyTypeVal = keyType(1)
+)
+
+// keyTypeSeek defines the keyType that should be passed when constructing an
+// internal key for seeking to a particular sequence number (since we
+// sort sequence numbers in decreasing order and the value type is
+// embedded as the low 8 bits in the sequence number in internal keys,
+// we need to use the highest-numbered ValueType, not the lowest).
+const keyTypeSeek = keyTypeVal
+
+const (
+ // Maximum value possible for sequence number; the 8-bits are
+ // used by value type, so its can packed together in single
+ // 64-bit integer.
+ keyMaxSeq = (uint64(1) << 56) - 1
+ // Maximum value possible for packed sequence number and type.
+ keyMaxNum = (keyMaxSeq << 8) | uint64(keyTypeSeek)
+)
+
+// Maximum number encoded in bytes.
+var keyMaxNumBytes = make([]byte, 8)
+
+func init() {
+ binary.LittleEndian.PutUint64(keyMaxNumBytes, keyMaxNum)
+}
+
+type internalKey []byte
+
+func makeInternalKey(dst, ukey []byte, seq uint64, kt keyType) internalKey {
+ if seq > keyMaxSeq {
+ panic("leveldb: invalid sequence number")
+ } else if kt > keyTypeVal {
+ panic("leveldb: invalid type")
+ }
+
+ dst = ensureBuffer(dst, len(ukey)+8)
+ copy(dst, ukey)
+ binary.LittleEndian.PutUint64(dst[len(ukey):], (seq<<8)|uint64(kt))
+ return internalKey(dst)
+}
+
+func parseInternalKey(ik []byte) (ukey []byte, seq uint64, kt keyType, err error) {
+ if len(ik) < 8 {
+ return nil, 0, 0, newErrInternalKeyCorrupted(ik, "invalid length")
+ }
+ num := binary.LittleEndian.Uint64(ik[len(ik)-8:])
+ seq, kt = uint64(num>>8), keyType(num&0xff)
+ if kt > keyTypeVal {
+ return nil, 0, 0, newErrInternalKeyCorrupted(ik, "invalid type")
+ }
+ ukey = ik[:len(ik)-8]
+ return
+}
+
+func validInternalKey(ik []byte) bool {
+ _, _, _, err := parseInternalKey(ik)
+ return err == nil
+}
+
+func (ik internalKey) assert() {
+ if ik == nil {
+ panic("leveldb: nil internalKey")
+ }
+ if len(ik) < 8 {
+ panic(fmt.Sprintf("leveldb: internal key %q, len=%d: invalid length", []byte(ik), len(ik)))
+ }
+}
+
+func (ik internalKey) ukey() []byte {
+ ik.assert()
+ return ik[:len(ik)-8]
+}
+
+func (ik internalKey) num() uint64 {
+ ik.assert()
+ return binary.LittleEndian.Uint64(ik[len(ik)-8:])
+}
+
+func (ik internalKey) parseNum() (seq uint64, kt keyType) {
+ num := ik.num()
+ seq, kt = uint64(num>>8), keyType(num&0xff)
+ if kt > keyTypeVal {
+ panic(fmt.Sprintf("leveldb: internal key %q, len=%d: invalid type %#x", []byte(ik), len(ik), kt))
+ }
+ return
+}
+
+func (ik internalKey) String() string {
+ if ik == nil {
+ return ""
+ }
+
+ if ukey, seq, kt, err := parseInternalKey(ik); err == nil {
+ return fmt.Sprintf("%s,%s%d", shorten(string(ukey)), kt, seq)
+ }
+ return fmt.Sprintf("", []byte(ik))
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/memdb/memdb.go b/vendor/github.com/syndtr/goleveldb/leveldb/memdb/memdb.go
new file mode 100644
index 0000000..824e47f
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/memdb/memdb.go
@@ -0,0 +1,479 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Package memdb provides in-memory key/value database implementation.
+package memdb
+
+import (
+ "math/rand"
+ "sync"
+
+ "github.com/syndtr/goleveldb/leveldb/comparer"
+ "github.com/syndtr/goleveldb/leveldb/errors"
+ "github.com/syndtr/goleveldb/leveldb/iterator"
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+// Common errors.
+var (
+ ErrNotFound = errors.ErrNotFound
+ ErrIterReleased = errors.New("leveldb/memdb: iterator released")
+)
+
+const tMaxHeight = 12
+
+type dbIter struct {
+ util.BasicReleaser
+ p *DB
+ slice *util.Range
+ node int
+ forward bool
+ key, value []byte
+ err error
+}
+
+func (i *dbIter) fill(checkStart, checkLimit bool) bool {
+ if i.node != 0 {
+ n := i.p.nodeData[i.node]
+ m := n + i.p.nodeData[i.node+nKey]
+ i.key = i.p.kvData[n:m]
+ if i.slice != nil {
+ switch {
+ case checkLimit && i.slice.Limit != nil && i.p.cmp.Compare(i.key, i.slice.Limit) >= 0:
+ fallthrough
+ case checkStart && i.slice.Start != nil && i.p.cmp.Compare(i.key, i.slice.Start) < 0:
+ i.node = 0
+ goto bail
+ }
+ }
+ i.value = i.p.kvData[m : m+i.p.nodeData[i.node+nVal]]
+ return true
+ }
+bail:
+ i.key = nil
+ i.value = nil
+ return false
+}
+
+func (i *dbIter) Valid() bool {
+ return i.node != 0
+}
+
+func (i *dbIter) First() bool {
+ if i.Released() {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ i.forward = true
+ i.p.mu.RLock()
+ defer i.p.mu.RUnlock()
+ if i.slice != nil && i.slice.Start != nil {
+ i.node, _ = i.p.findGE(i.slice.Start, false)
+ } else {
+ i.node = i.p.nodeData[nNext]
+ }
+ return i.fill(false, true)
+}
+
+func (i *dbIter) Last() bool {
+ if i.Released() {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ i.forward = false
+ i.p.mu.RLock()
+ defer i.p.mu.RUnlock()
+ if i.slice != nil && i.slice.Limit != nil {
+ i.node = i.p.findLT(i.slice.Limit)
+ } else {
+ i.node = i.p.findLast()
+ }
+ return i.fill(true, false)
+}
+
+func (i *dbIter) Seek(key []byte) bool {
+ if i.Released() {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ i.forward = true
+ i.p.mu.RLock()
+ defer i.p.mu.RUnlock()
+ if i.slice != nil && i.slice.Start != nil && i.p.cmp.Compare(key, i.slice.Start) < 0 {
+ key = i.slice.Start
+ }
+ i.node, _ = i.p.findGE(key, false)
+ return i.fill(false, true)
+}
+
+func (i *dbIter) Next() bool {
+ if i.Released() {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ if i.node == 0 {
+ if !i.forward {
+ return i.First()
+ }
+ return false
+ }
+ i.forward = true
+ i.p.mu.RLock()
+ defer i.p.mu.RUnlock()
+ i.node = i.p.nodeData[i.node+nNext]
+ return i.fill(false, true)
+}
+
+func (i *dbIter) Prev() bool {
+ if i.Released() {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ if i.node == 0 {
+ if i.forward {
+ return i.Last()
+ }
+ return false
+ }
+ i.forward = false
+ i.p.mu.RLock()
+ defer i.p.mu.RUnlock()
+ i.node = i.p.findLT(i.key)
+ return i.fill(true, false)
+}
+
+func (i *dbIter) Key() []byte {
+ return i.key
+}
+
+func (i *dbIter) Value() []byte {
+ return i.value
+}
+
+func (i *dbIter) Error() error { return i.err }
+
+func (i *dbIter) Release() {
+ if !i.Released() {
+ i.p = nil
+ i.node = 0
+ i.key = nil
+ i.value = nil
+ i.BasicReleaser.Release()
+ }
+}
+
+const (
+ nKV = iota
+ nKey
+ nVal
+ nHeight
+ nNext
+)
+
+// DB is an in-memory key/value database.
+type DB struct {
+ cmp comparer.BasicComparer
+ rnd *rand.Rand
+
+ mu sync.RWMutex
+ kvData []byte
+ // Node data:
+ // [0] : KV offset
+ // [1] : Key length
+ // [2] : Value length
+ // [3] : Height
+ // [3..height] : Next nodes
+ nodeData []int
+ prevNode [tMaxHeight]int
+ maxHeight int
+ n int
+ kvSize int
+}
+
+func (p *DB) randHeight() (h int) {
+ const branching = 4
+ h = 1
+ for h < tMaxHeight && p.rnd.Int()%branching == 0 {
+ h++
+ }
+ return
+}
+
+// Must hold RW-lock if prev == true, as it use shared prevNode slice.
+func (p *DB) findGE(key []byte, prev bool) (int, bool) {
+ node := 0
+ h := p.maxHeight - 1
+ for {
+ next := p.nodeData[node+nNext+h]
+ cmp := 1
+ if next != 0 {
+ o := p.nodeData[next]
+ cmp = p.cmp.Compare(p.kvData[o:o+p.nodeData[next+nKey]], key)
+ }
+ if cmp < 0 {
+ // Keep searching in this list
+ node = next
+ } else {
+ if prev {
+ p.prevNode[h] = node
+ } else if cmp == 0 {
+ return next, true
+ }
+ if h == 0 {
+ return next, cmp == 0
+ }
+ h--
+ }
+ }
+}
+
+func (p *DB) findLT(key []byte) int {
+ node := 0
+ h := p.maxHeight - 1
+ for {
+ next := p.nodeData[node+nNext+h]
+ o := p.nodeData[next]
+ if next == 0 || p.cmp.Compare(p.kvData[o:o+p.nodeData[next+nKey]], key) >= 0 {
+ if h == 0 {
+ break
+ }
+ h--
+ } else {
+ node = next
+ }
+ }
+ return node
+}
+
+func (p *DB) findLast() int {
+ node := 0
+ h := p.maxHeight - 1
+ for {
+ next := p.nodeData[node+nNext+h]
+ if next == 0 {
+ if h == 0 {
+ break
+ }
+ h--
+ } else {
+ node = next
+ }
+ }
+ return node
+}
+
+// Put sets the value for the given key. It overwrites any previous value
+// for that key; a DB is not a multi-map.
+//
+// It is safe to modify the contents of the arguments after Put returns.
+func (p *DB) Put(key []byte, value []byte) error {
+ p.mu.Lock()
+ defer p.mu.Unlock()
+
+ if node, exact := p.findGE(key, true); exact {
+ kvOffset := len(p.kvData)
+ p.kvData = append(p.kvData, key...)
+ p.kvData = append(p.kvData, value...)
+ p.nodeData[node] = kvOffset
+ m := p.nodeData[node+nVal]
+ p.nodeData[node+nVal] = len(value)
+ p.kvSize += len(value) - m
+ return nil
+ }
+
+ h := p.randHeight()
+ if h > p.maxHeight {
+ for i := p.maxHeight; i < h; i++ {
+ p.prevNode[i] = 0
+ }
+ p.maxHeight = h
+ }
+
+ kvOffset := len(p.kvData)
+ p.kvData = append(p.kvData, key...)
+ p.kvData = append(p.kvData, value...)
+ // Node
+ node := len(p.nodeData)
+ p.nodeData = append(p.nodeData, kvOffset, len(key), len(value), h)
+ for i, n := range p.prevNode[:h] {
+ m := n + nNext + i
+ p.nodeData = append(p.nodeData, p.nodeData[m])
+ p.nodeData[m] = node
+ }
+
+ p.kvSize += len(key) + len(value)
+ p.n++
+ return nil
+}
+
+// Delete deletes the value for the given key. It returns ErrNotFound if
+// the DB does not contain the key.
+//
+// It is safe to modify the contents of the arguments after Delete returns.
+func (p *DB) Delete(key []byte) error {
+ p.mu.Lock()
+ defer p.mu.Unlock()
+
+ node, exact := p.findGE(key, true)
+ if !exact {
+ return ErrNotFound
+ }
+
+ h := p.nodeData[node+nHeight]
+ for i, n := range p.prevNode[:h] {
+ m := n + nNext + i
+ p.nodeData[m] = p.nodeData[p.nodeData[m]+nNext+i]
+ }
+
+ p.kvSize -= p.nodeData[node+nKey] + p.nodeData[node+nVal]
+ p.n--
+ return nil
+}
+
+// Contains returns true if the given key are in the DB.
+//
+// It is safe to modify the contents of the arguments after Contains returns.
+func (p *DB) Contains(key []byte) bool {
+ p.mu.RLock()
+ _, exact := p.findGE(key, false)
+ p.mu.RUnlock()
+ return exact
+}
+
+// Get gets the value for the given key. It returns error.ErrNotFound if the
+// DB does not contain the key.
+//
+// The caller should not modify the contents of the returned slice, but
+// it is safe to modify the contents of the argument after Get returns.
+func (p *DB) Get(key []byte) (value []byte, err error) {
+ p.mu.RLock()
+ if node, exact := p.findGE(key, false); exact {
+ o := p.nodeData[node] + p.nodeData[node+nKey]
+ value = p.kvData[o : o+p.nodeData[node+nVal]]
+ } else {
+ err = ErrNotFound
+ }
+ p.mu.RUnlock()
+ return
+}
+
+// Find finds key/value pair whose key is greater than or equal to the
+// given key. It returns ErrNotFound if the table doesn't contain
+// such pair.
+//
+// The caller should not modify the contents of the returned slice, but
+// it is safe to modify the contents of the argument after Find returns.
+func (p *DB) Find(key []byte) (rkey, value []byte, err error) {
+ p.mu.RLock()
+ if node, _ := p.findGE(key, false); node != 0 {
+ n := p.nodeData[node]
+ m := n + p.nodeData[node+nKey]
+ rkey = p.kvData[n:m]
+ value = p.kvData[m : m+p.nodeData[node+nVal]]
+ } else {
+ err = ErrNotFound
+ }
+ p.mu.RUnlock()
+ return
+}
+
+// NewIterator returns an iterator of the DB.
+// The returned iterator is not safe for concurrent use, but it is safe to use
+// multiple iterators concurrently, with each in a dedicated goroutine.
+// It is also safe to use an iterator concurrently with modifying its
+// underlying DB. However, the resultant key/value pairs are not guaranteed
+// to be a consistent snapshot of the DB at a particular point in time.
+//
+// Slice allows slicing the iterator to only contains keys in the given
+// range. A nil Range.Start is treated as a key before all keys in the
+// DB. And a nil Range.Limit is treated as a key after all keys in
+// the DB.
+//
+// WARNING: Any slice returned by interator (e.g. slice returned by calling
+// Iterator.Key() or Iterator.Key() methods), its content should not be modified
+// unless noted otherwise.
+//
+// The iterator must be released after use, by calling Release method.
+//
+// Also read Iterator documentation of the leveldb/iterator package.
+func (p *DB) NewIterator(slice *util.Range) iterator.Iterator {
+ return &dbIter{p: p, slice: slice}
+}
+
+// Capacity returns keys/values buffer capacity.
+func (p *DB) Capacity() int {
+ p.mu.RLock()
+ defer p.mu.RUnlock()
+ return cap(p.kvData)
+}
+
+// Size returns sum of keys and values length. Note that deleted
+// key/value will not be accounted for, but it will still consume
+// the buffer, since the buffer is append only.
+func (p *DB) Size() int {
+ p.mu.RLock()
+ defer p.mu.RUnlock()
+ return p.kvSize
+}
+
+// Free returns keys/values free buffer before need to grow.
+func (p *DB) Free() int {
+ p.mu.RLock()
+ defer p.mu.RUnlock()
+ return cap(p.kvData) - len(p.kvData)
+}
+
+// Len returns the number of entries in the DB.
+func (p *DB) Len() int {
+ p.mu.RLock()
+ defer p.mu.RUnlock()
+ return p.n
+}
+
+// Reset resets the DB to initial empty state. Allows reuse the buffer.
+func (p *DB) Reset() {
+ p.mu.Lock()
+ p.rnd = rand.New(rand.NewSource(0xdeadbeef))
+ p.maxHeight = 1
+ p.n = 0
+ p.kvSize = 0
+ p.kvData = p.kvData[:0]
+ p.nodeData = p.nodeData[:nNext+tMaxHeight]
+ p.nodeData[nKV] = 0
+ p.nodeData[nKey] = 0
+ p.nodeData[nVal] = 0
+ p.nodeData[nHeight] = tMaxHeight
+ for n := 0; n < tMaxHeight; n++ {
+ p.nodeData[nNext+n] = 0
+ p.prevNode[n] = 0
+ }
+ p.mu.Unlock()
+}
+
+// New creates a new initialized in-memory key/value DB. The capacity
+// is the initial key/value buffer capacity. The capacity is advisory,
+// not enforced.
+//
+// This DB is append-only, deleting an entry would remove entry node but not
+// reclaim KV buffer.
+//
+// The returned DB instance is safe for concurrent use.
+func New(cmp comparer.BasicComparer, capacity int) *DB {
+ p := &DB{
+ cmp: cmp,
+ rnd: rand.New(rand.NewSource(0xdeadbeef)),
+ maxHeight: 1,
+ kvData: make([]byte, 0, capacity),
+ nodeData: make([]int, 4+tMaxHeight),
+ }
+ p.nodeData[nHeight] = tMaxHeight
+ return p
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/opt/options.go b/vendor/github.com/syndtr/goleveldb/leveldb/opt/options.go
new file mode 100644
index 0000000..528b164
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/opt/options.go
@@ -0,0 +1,697 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Package opt provides sets of options used by LevelDB.
+package opt
+
+import (
+ "math"
+
+ "github.com/syndtr/goleveldb/leveldb/cache"
+ "github.com/syndtr/goleveldb/leveldb/comparer"
+ "github.com/syndtr/goleveldb/leveldb/filter"
+)
+
+const (
+ KiB = 1024
+ MiB = KiB * 1024
+ GiB = MiB * 1024
+)
+
+var (
+ DefaultBlockCacher = LRUCacher
+ DefaultBlockCacheCapacity = 8 * MiB
+ DefaultBlockRestartInterval = 16
+ DefaultBlockSize = 4 * KiB
+ DefaultCompactionExpandLimitFactor = 25
+ DefaultCompactionGPOverlapsFactor = 10
+ DefaultCompactionL0Trigger = 4
+ DefaultCompactionSourceLimitFactor = 1
+ DefaultCompactionTableSize = 2 * MiB
+ DefaultCompactionTableSizeMultiplier = 1.0
+ DefaultCompactionTotalSize = 10 * MiB
+ DefaultCompactionTotalSizeMultiplier = 10.0
+ DefaultCompressionType = SnappyCompression
+ DefaultIteratorSamplingRate = 1 * MiB
+ DefaultOpenFilesCacher = LRUCacher
+ DefaultOpenFilesCacheCapacity = 500
+ DefaultWriteBuffer = 4 * MiB
+ DefaultWriteL0PauseTrigger = 12
+ DefaultWriteL0SlowdownTrigger = 8
+)
+
+// Cacher is a caching algorithm.
+type Cacher interface {
+ New(capacity int) cache.Cacher
+}
+
+type CacherFunc struct {
+ NewFunc func(capacity int) cache.Cacher
+}
+
+func (f *CacherFunc) New(capacity int) cache.Cacher {
+ if f.NewFunc != nil {
+ return f.NewFunc(capacity)
+ }
+ return nil
+}
+
+func noCacher(int) cache.Cacher { return nil }
+
+var (
+ // LRUCacher is the LRU-cache algorithm.
+ LRUCacher = &CacherFunc{cache.NewLRU}
+
+ // NoCacher is the value to disable caching algorithm.
+ NoCacher = &CacherFunc{}
+)
+
+// Compression is the 'sorted table' block compression algorithm to use.
+type Compression uint
+
+func (c Compression) String() string {
+ switch c {
+ case DefaultCompression:
+ return "default"
+ case NoCompression:
+ return "none"
+ case SnappyCompression:
+ return "snappy"
+ }
+ return "invalid"
+}
+
+const (
+ DefaultCompression Compression = iota
+ NoCompression
+ SnappyCompression
+ nCompression
+)
+
+// Strict is the DB 'strict level'.
+type Strict uint
+
+const (
+ // If present then a corrupted or invalid chunk or block in manifest
+ // journal will cause an error instead of being dropped.
+ // This will prevent database with corrupted manifest to be opened.
+ StrictManifest Strict = 1 << iota
+
+ // If present then journal chunk checksum will be verified.
+ StrictJournalChecksum
+
+ // If present then a corrupted or invalid chunk or block in journal
+ // will cause an error instead of being dropped.
+ // This will prevent database with corrupted journal to be opened.
+ StrictJournal
+
+ // If present then 'sorted table' block checksum will be verified.
+ // This has effect on both 'read operation' and compaction.
+ StrictBlockChecksum
+
+ // If present then a corrupted 'sorted table' will fails compaction.
+ // The database will enter read-only mode.
+ StrictCompaction
+
+ // If present then a corrupted 'sorted table' will halts 'read operation'.
+ StrictReader
+
+ // If present then leveldb.Recover will drop corrupted 'sorted table'.
+ StrictRecovery
+
+ // This only applicable for ReadOptions, if present then this ReadOptions
+ // 'strict level' will override global ones.
+ StrictOverride
+
+ // StrictAll enables all strict flags.
+ StrictAll = StrictManifest | StrictJournalChecksum | StrictJournal | StrictBlockChecksum | StrictCompaction | StrictReader | StrictRecovery
+
+ // DefaultStrict is the default strict flags. Specify any strict flags
+ // will override default strict flags as whole (i.e. not OR'ed).
+ DefaultStrict = StrictJournalChecksum | StrictBlockChecksum | StrictCompaction | StrictReader
+
+ // NoStrict disables all strict flags. Override default strict flags.
+ NoStrict = ^StrictAll
+)
+
+// Options holds the optional parameters for the DB at large.
+type Options struct {
+ // AltFilters defines one or more 'alternative filters'.
+ // 'alternative filters' will be used during reads if a filter block
+ // does not match with the 'effective filter'.
+ //
+ // The default value is nil
+ AltFilters []filter.Filter
+
+ // BlockCacher provides cache algorithm for LevelDB 'sorted table' block caching.
+ // Specify NoCacher to disable caching algorithm.
+ //
+ // The default value is LRUCacher.
+ BlockCacher Cacher
+
+ // BlockCacheCapacity defines the capacity of the 'sorted table' block caching.
+ // Use -1 for zero, this has same effect as specifying NoCacher to BlockCacher.
+ //
+ // The default value is 8MiB.
+ BlockCacheCapacity int
+
+ // BlockCacheEvictRemoved allows enable forced-eviction on cached block belonging
+ // to removed 'sorted table'.
+ //
+ // The default if false.
+ BlockCacheEvictRemoved bool
+
+ // BlockRestartInterval is the number of keys between restart points for
+ // delta encoding of keys.
+ //
+ // The default value is 16.
+ BlockRestartInterval int
+
+ // BlockSize is the minimum uncompressed size in bytes of each 'sorted table'
+ // block.
+ //
+ // The default value is 4KiB.
+ BlockSize int
+
+ // CompactionExpandLimitFactor limits compaction size after expanded.
+ // This will be multiplied by table size limit at compaction target level.
+ //
+ // The default value is 25.
+ CompactionExpandLimitFactor int
+
+ // CompactionGPOverlapsFactor limits overlaps in grandparent (Level + 2) that a
+ // single 'sorted table' generates.
+ // This will be multiplied by table size limit at grandparent level.
+ //
+ // The default value is 10.
+ CompactionGPOverlapsFactor int
+
+ // CompactionL0Trigger defines number of 'sorted table' at level-0 that will
+ // trigger compaction.
+ //
+ // The default value is 4.
+ CompactionL0Trigger int
+
+ // CompactionSourceLimitFactor limits compaction source size. This doesn't apply to
+ // level-0.
+ // This will be multiplied by table size limit at compaction target level.
+ //
+ // The default value is 1.
+ CompactionSourceLimitFactor int
+
+ // CompactionTableSize limits size of 'sorted table' that compaction generates.
+ // The limits for each level will be calculated as:
+ // CompactionTableSize * (CompactionTableSizeMultiplier ^ Level)
+ // The multiplier for each level can also fine-tuned using CompactionTableSizeMultiplierPerLevel.
+ //
+ // The default value is 2MiB.
+ CompactionTableSize int
+
+ // CompactionTableSizeMultiplier defines multiplier for CompactionTableSize.
+ //
+ // The default value is 1.
+ CompactionTableSizeMultiplier float64
+
+ // CompactionTableSizeMultiplierPerLevel defines per-level multiplier for
+ // CompactionTableSize.
+ // Use zero to skip a level.
+ //
+ // The default value is nil.
+ CompactionTableSizeMultiplierPerLevel []float64
+
+ // CompactionTotalSize limits total size of 'sorted table' for each level.
+ // The limits for each level will be calculated as:
+ // CompactionTotalSize * (CompactionTotalSizeMultiplier ^ Level)
+ // The multiplier for each level can also fine-tuned using
+ // CompactionTotalSizeMultiplierPerLevel.
+ //
+ // The default value is 10MiB.
+ CompactionTotalSize int
+
+ // CompactionTotalSizeMultiplier defines multiplier for CompactionTotalSize.
+ //
+ // The default value is 10.
+ CompactionTotalSizeMultiplier float64
+
+ // CompactionTotalSizeMultiplierPerLevel defines per-level multiplier for
+ // CompactionTotalSize.
+ // Use zero to skip a level.
+ //
+ // The default value is nil.
+ CompactionTotalSizeMultiplierPerLevel []float64
+
+ // Comparer defines a total ordering over the space of []byte keys: a 'less
+ // than' relationship. The same comparison algorithm must be used for reads
+ // and writes over the lifetime of the DB.
+ //
+ // The default value uses the same ordering as bytes.Compare.
+ Comparer comparer.Comparer
+
+ // Compression defines the 'sorted table' block compression to use.
+ //
+ // The default value (DefaultCompression) uses snappy compression.
+ Compression Compression
+
+ // DisableBufferPool allows disable use of util.BufferPool functionality.
+ //
+ // The default value is false.
+ DisableBufferPool bool
+
+ // DisableBlockCache allows disable use of cache.Cache functionality on
+ // 'sorted table' block.
+ //
+ // The default value is false.
+ DisableBlockCache bool
+
+ // DisableCompactionBackoff allows disable compaction retry backoff.
+ //
+ // The default value is false.
+ DisableCompactionBackoff bool
+
+ // DisableLargeBatchTransaction allows disabling switch-to-transaction mode
+ // on large batch write. If enable batch writes large than WriteBuffer will
+ // use transaction.
+ //
+ // The default is false.
+ DisableLargeBatchTransaction bool
+
+ // ErrorIfExist defines whether an error should returned if the DB already
+ // exist.
+ //
+ // The default value is false.
+ ErrorIfExist bool
+
+ // ErrorIfMissing defines whether an error should returned if the DB is
+ // missing. If false then the database will be created if missing, otherwise
+ // an error will be returned.
+ //
+ // The default value is false.
+ ErrorIfMissing bool
+
+ // Filter defines an 'effective filter' to use. An 'effective filter'
+ // if defined will be used to generate per-table filter block.
+ // The filter name will be stored on disk.
+ // During reads LevelDB will try to find matching filter from
+ // 'effective filter' and 'alternative filters'.
+ //
+ // Filter can be changed after a DB has been created. It is recommended
+ // to put old filter to the 'alternative filters' to mitigate lack of
+ // filter during transition period.
+ //
+ // A filter is used to reduce disk reads when looking for a specific key.
+ //
+ // The default value is nil.
+ Filter filter.Filter
+
+ // IteratorSamplingRate defines approximate gap (in bytes) between read
+ // sampling of an iterator. The samples will be used to determine when
+ // compaction should be triggered.
+ //
+ // The default is 1MiB.
+ IteratorSamplingRate int
+
+ // NoSync allows completely disable fsync.
+ //
+ // The default is false.
+ NoSync bool
+
+ // NoWriteMerge allows disabling write merge.
+ //
+ // The default is false.
+ NoWriteMerge bool
+
+ // OpenFilesCacher provides cache algorithm for open files caching.
+ // Specify NoCacher to disable caching algorithm.
+ //
+ // The default value is LRUCacher.
+ OpenFilesCacher Cacher
+
+ // OpenFilesCacheCapacity defines the capacity of the open files caching.
+ // Use -1 for zero, this has same effect as specifying NoCacher to OpenFilesCacher.
+ //
+ // The default value is 500.
+ OpenFilesCacheCapacity int
+
+ // If true then opens DB in read-only mode.
+ //
+ // The default value is false.
+ ReadOnly bool
+
+ // Strict defines the DB strict level.
+ Strict Strict
+
+ // WriteBuffer defines maximum size of a 'memdb' before flushed to
+ // 'sorted table'. 'memdb' is an in-memory DB backed by an on-disk
+ // unsorted journal.
+ //
+ // LevelDB may held up to two 'memdb' at the same time.
+ //
+ // The default value is 4MiB.
+ WriteBuffer int
+
+ // WriteL0StopTrigger defines number of 'sorted table' at level-0 that will
+ // pause write.
+ //
+ // The default value is 12.
+ WriteL0PauseTrigger int
+
+ // WriteL0SlowdownTrigger defines number of 'sorted table' at level-0 that
+ // will trigger write slowdown.
+ //
+ // The default value is 8.
+ WriteL0SlowdownTrigger int
+}
+
+func (o *Options) GetAltFilters() []filter.Filter {
+ if o == nil {
+ return nil
+ }
+ return o.AltFilters
+}
+
+func (o *Options) GetBlockCacher() Cacher {
+ if o == nil || o.BlockCacher == nil {
+ return DefaultBlockCacher
+ } else if o.BlockCacher == NoCacher {
+ return nil
+ }
+ return o.BlockCacher
+}
+
+func (o *Options) GetBlockCacheCapacity() int {
+ if o == nil || o.BlockCacheCapacity == 0 {
+ return DefaultBlockCacheCapacity
+ } else if o.BlockCacheCapacity < 0 {
+ return 0
+ }
+ return o.BlockCacheCapacity
+}
+
+func (o *Options) GetBlockCacheEvictRemoved() bool {
+ if o == nil {
+ return false
+ }
+ return o.BlockCacheEvictRemoved
+}
+
+func (o *Options) GetBlockRestartInterval() int {
+ if o == nil || o.BlockRestartInterval <= 0 {
+ return DefaultBlockRestartInterval
+ }
+ return o.BlockRestartInterval
+}
+
+func (o *Options) GetBlockSize() int {
+ if o == nil || o.BlockSize <= 0 {
+ return DefaultBlockSize
+ }
+ return o.BlockSize
+}
+
+func (o *Options) GetCompactionExpandLimit(level int) int {
+ factor := DefaultCompactionExpandLimitFactor
+ if o != nil && o.CompactionExpandLimitFactor > 0 {
+ factor = o.CompactionExpandLimitFactor
+ }
+ return o.GetCompactionTableSize(level+1) * factor
+}
+
+func (o *Options) GetCompactionGPOverlaps(level int) int {
+ factor := DefaultCompactionGPOverlapsFactor
+ if o != nil && o.CompactionGPOverlapsFactor > 0 {
+ factor = o.CompactionGPOverlapsFactor
+ }
+ return o.GetCompactionTableSize(level+2) * factor
+}
+
+func (o *Options) GetCompactionL0Trigger() int {
+ if o == nil || o.CompactionL0Trigger == 0 {
+ return DefaultCompactionL0Trigger
+ }
+ return o.CompactionL0Trigger
+}
+
+func (o *Options) GetCompactionSourceLimit(level int) int {
+ factor := DefaultCompactionSourceLimitFactor
+ if o != nil && o.CompactionSourceLimitFactor > 0 {
+ factor = o.CompactionSourceLimitFactor
+ }
+ return o.GetCompactionTableSize(level+1) * factor
+}
+
+func (o *Options) GetCompactionTableSize(level int) int {
+ var (
+ base = DefaultCompactionTableSize
+ mult float64
+ )
+ if o != nil {
+ if o.CompactionTableSize > 0 {
+ base = o.CompactionTableSize
+ }
+ if level < len(o.CompactionTableSizeMultiplierPerLevel) && o.CompactionTableSizeMultiplierPerLevel[level] > 0 {
+ mult = o.CompactionTableSizeMultiplierPerLevel[level]
+ } else if o.CompactionTableSizeMultiplier > 0 {
+ mult = math.Pow(o.CompactionTableSizeMultiplier, float64(level))
+ }
+ }
+ if mult == 0 {
+ mult = math.Pow(DefaultCompactionTableSizeMultiplier, float64(level))
+ }
+ return int(float64(base) * mult)
+}
+
+func (o *Options) GetCompactionTotalSize(level int) int64 {
+ var (
+ base = DefaultCompactionTotalSize
+ mult float64
+ )
+ if o != nil {
+ if o.CompactionTotalSize > 0 {
+ base = o.CompactionTotalSize
+ }
+ if level < len(o.CompactionTotalSizeMultiplierPerLevel) && o.CompactionTotalSizeMultiplierPerLevel[level] > 0 {
+ mult = o.CompactionTotalSizeMultiplierPerLevel[level]
+ } else if o.CompactionTotalSizeMultiplier > 0 {
+ mult = math.Pow(o.CompactionTotalSizeMultiplier, float64(level))
+ }
+ }
+ if mult == 0 {
+ mult = math.Pow(DefaultCompactionTotalSizeMultiplier, float64(level))
+ }
+ return int64(float64(base) * mult)
+}
+
+func (o *Options) GetComparer() comparer.Comparer {
+ if o == nil || o.Comparer == nil {
+ return comparer.DefaultComparer
+ }
+ return o.Comparer
+}
+
+func (o *Options) GetCompression() Compression {
+ if o == nil || o.Compression <= DefaultCompression || o.Compression >= nCompression {
+ return DefaultCompressionType
+ }
+ return o.Compression
+}
+
+func (o *Options) GetDisableBufferPool() bool {
+ if o == nil {
+ return false
+ }
+ return o.DisableBufferPool
+}
+
+func (o *Options) GetDisableBlockCache() bool {
+ if o == nil {
+ return false
+ }
+ return o.DisableBlockCache
+}
+
+func (o *Options) GetDisableCompactionBackoff() bool {
+ if o == nil {
+ return false
+ }
+ return o.DisableCompactionBackoff
+}
+
+func (o *Options) GetDisableLargeBatchTransaction() bool {
+ if o == nil {
+ return false
+ }
+ return o.DisableLargeBatchTransaction
+}
+
+func (o *Options) GetErrorIfExist() bool {
+ if o == nil {
+ return false
+ }
+ return o.ErrorIfExist
+}
+
+func (o *Options) GetErrorIfMissing() bool {
+ if o == nil {
+ return false
+ }
+ return o.ErrorIfMissing
+}
+
+func (o *Options) GetFilter() filter.Filter {
+ if o == nil {
+ return nil
+ }
+ return o.Filter
+}
+
+func (o *Options) GetIteratorSamplingRate() int {
+ if o == nil || o.IteratorSamplingRate <= 0 {
+ return DefaultIteratorSamplingRate
+ }
+ return o.IteratorSamplingRate
+}
+
+func (o *Options) GetNoSync() bool {
+ if o == nil {
+ return false
+ }
+ return o.NoSync
+}
+
+func (o *Options) GetNoWriteMerge() bool {
+ if o == nil {
+ return false
+ }
+ return o.NoWriteMerge
+}
+
+func (o *Options) GetOpenFilesCacher() Cacher {
+ if o == nil || o.OpenFilesCacher == nil {
+ return DefaultOpenFilesCacher
+ }
+ if o.OpenFilesCacher == NoCacher {
+ return nil
+ }
+ return o.OpenFilesCacher
+}
+
+func (o *Options) GetOpenFilesCacheCapacity() int {
+ if o == nil || o.OpenFilesCacheCapacity == 0 {
+ return DefaultOpenFilesCacheCapacity
+ } else if o.OpenFilesCacheCapacity < 0 {
+ return 0
+ }
+ return o.OpenFilesCacheCapacity
+}
+
+func (o *Options) GetReadOnly() bool {
+ if o == nil {
+ return false
+ }
+ return o.ReadOnly
+}
+
+func (o *Options) GetStrict(strict Strict) bool {
+ if o == nil || o.Strict == 0 {
+ return DefaultStrict&strict != 0
+ }
+ return o.Strict&strict != 0
+}
+
+func (o *Options) GetWriteBuffer() int {
+ if o == nil || o.WriteBuffer <= 0 {
+ return DefaultWriteBuffer
+ }
+ return o.WriteBuffer
+}
+
+func (o *Options) GetWriteL0PauseTrigger() int {
+ if o == nil || o.WriteL0PauseTrigger == 0 {
+ return DefaultWriteL0PauseTrigger
+ }
+ return o.WriteL0PauseTrigger
+}
+
+func (o *Options) GetWriteL0SlowdownTrigger() int {
+ if o == nil || o.WriteL0SlowdownTrigger == 0 {
+ return DefaultWriteL0SlowdownTrigger
+ }
+ return o.WriteL0SlowdownTrigger
+}
+
+// ReadOptions holds the optional parameters for 'read operation'. The
+// 'read operation' includes Get, Find and NewIterator.
+type ReadOptions struct {
+ // DontFillCache defines whether block reads for this 'read operation'
+ // should be cached. If false then the block will be cached. This does
+ // not affects already cached block.
+ //
+ // The default value is false.
+ DontFillCache bool
+
+ // Strict will be OR'ed with global DB 'strict level' unless StrictOverride
+ // is present. Currently only StrictReader that has effect here.
+ Strict Strict
+}
+
+func (ro *ReadOptions) GetDontFillCache() bool {
+ if ro == nil {
+ return false
+ }
+ return ro.DontFillCache
+}
+
+func (ro *ReadOptions) GetStrict(strict Strict) bool {
+ if ro == nil {
+ return false
+ }
+ return ro.Strict&strict != 0
+}
+
+// WriteOptions holds the optional parameters for 'write operation'. The
+// 'write operation' includes Write, Put and Delete.
+type WriteOptions struct {
+ // NoWriteMerge allows disabling write merge.
+ //
+ // The default is false.
+ NoWriteMerge bool
+
+ // Sync is whether to sync underlying writes from the OS buffer cache
+ // through to actual disk, if applicable. Setting Sync can result in
+ // slower writes.
+ //
+ // If false, and the machine crashes, then some recent writes may be lost.
+ // Note that if it is just the process that crashes (and the machine does
+ // not) then no writes will be lost.
+ //
+ // In other words, Sync being false has the same semantics as a write
+ // system call. Sync being true means write followed by fsync.
+ //
+ // The default value is false.
+ Sync bool
+}
+
+func (wo *WriteOptions) GetNoWriteMerge() bool {
+ if wo == nil {
+ return false
+ }
+ return wo.NoWriteMerge
+}
+
+func (wo *WriteOptions) GetSync() bool {
+ if wo == nil {
+ return false
+ }
+ return wo.Sync
+}
+
+func GetStrict(o *Options, ro *ReadOptions, strict Strict) bool {
+ if ro.GetStrict(StrictOverride) {
+ return ro.GetStrict(strict)
+ } else {
+ return o.GetStrict(strict) || ro.GetStrict(strict)
+ }
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/options.go b/vendor/github.com/syndtr/goleveldb/leveldb/options.go
new file mode 100644
index 0000000..b072b1a
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/options.go
@@ -0,0 +1,107 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "github.com/syndtr/goleveldb/leveldb/filter"
+ "github.com/syndtr/goleveldb/leveldb/opt"
+)
+
+func dupOptions(o *opt.Options) *opt.Options {
+ newo := &opt.Options{}
+ if o != nil {
+ *newo = *o
+ }
+ if newo.Strict == 0 {
+ newo.Strict = opt.DefaultStrict
+ }
+ return newo
+}
+
+func (s *session) setOptions(o *opt.Options) {
+ no := dupOptions(o)
+ // Alternative filters.
+ if filters := o.GetAltFilters(); len(filters) > 0 {
+ no.AltFilters = make([]filter.Filter, len(filters))
+ for i, filter := range filters {
+ no.AltFilters[i] = &iFilter{filter}
+ }
+ }
+ // Comparer.
+ s.icmp = &iComparer{o.GetComparer()}
+ no.Comparer = s.icmp
+ // Filter.
+ if filter := o.GetFilter(); filter != nil {
+ no.Filter = &iFilter{filter}
+ }
+
+ s.o = &cachedOptions{Options: no}
+ s.o.cache()
+}
+
+const optCachedLevel = 7
+
+type cachedOptions struct {
+ *opt.Options
+
+ compactionExpandLimit []int
+ compactionGPOverlaps []int
+ compactionSourceLimit []int
+ compactionTableSize []int
+ compactionTotalSize []int64
+}
+
+func (co *cachedOptions) cache() {
+ co.compactionExpandLimit = make([]int, optCachedLevel)
+ co.compactionGPOverlaps = make([]int, optCachedLevel)
+ co.compactionSourceLimit = make([]int, optCachedLevel)
+ co.compactionTableSize = make([]int, optCachedLevel)
+ co.compactionTotalSize = make([]int64, optCachedLevel)
+
+ for level := 0; level < optCachedLevel; level++ {
+ co.compactionExpandLimit[level] = co.Options.GetCompactionExpandLimit(level)
+ co.compactionGPOverlaps[level] = co.Options.GetCompactionGPOverlaps(level)
+ co.compactionSourceLimit[level] = co.Options.GetCompactionSourceLimit(level)
+ co.compactionTableSize[level] = co.Options.GetCompactionTableSize(level)
+ co.compactionTotalSize[level] = co.Options.GetCompactionTotalSize(level)
+ }
+}
+
+func (co *cachedOptions) GetCompactionExpandLimit(level int) int {
+ if level < optCachedLevel {
+ return co.compactionExpandLimit[level]
+ }
+ return co.Options.GetCompactionExpandLimit(level)
+}
+
+func (co *cachedOptions) GetCompactionGPOverlaps(level int) int {
+ if level < optCachedLevel {
+ return co.compactionGPOverlaps[level]
+ }
+ return co.Options.GetCompactionGPOverlaps(level)
+}
+
+func (co *cachedOptions) GetCompactionSourceLimit(level int) int {
+ if level < optCachedLevel {
+ return co.compactionSourceLimit[level]
+ }
+ return co.Options.GetCompactionSourceLimit(level)
+}
+
+func (co *cachedOptions) GetCompactionTableSize(level int) int {
+ if level < optCachedLevel {
+ return co.compactionTableSize[level]
+ }
+ return co.Options.GetCompactionTableSize(level)
+}
+
+func (co *cachedOptions) GetCompactionTotalSize(level int) int64 {
+ if level < optCachedLevel {
+ return co.compactionTotalSize[level]
+ }
+ return co.Options.GetCompactionTotalSize(level)
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/session.go b/vendor/github.com/syndtr/goleveldb/leveldb/session.go
new file mode 100644
index 0000000..3f391f9
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/session.go
@@ -0,0 +1,210 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "fmt"
+ "io"
+ "os"
+ "sync"
+
+ "github.com/syndtr/goleveldb/leveldb/errors"
+ "github.com/syndtr/goleveldb/leveldb/journal"
+ "github.com/syndtr/goleveldb/leveldb/opt"
+ "github.com/syndtr/goleveldb/leveldb/storage"
+)
+
+// ErrManifestCorrupted records manifest corruption. This error will be
+// wrapped with errors.ErrCorrupted.
+type ErrManifestCorrupted struct {
+ Field string
+ Reason string
+}
+
+func (e *ErrManifestCorrupted) Error() string {
+ return fmt.Sprintf("leveldb: manifest corrupted (field '%s'): %s", e.Field, e.Reason)
+}
+
+func newErrManifestCorrupted(fd storage.FileDesc, field, reason string) error {
+ return errors.NewErrCorrupted(fd, &ErrManifestCorrupted{field, reason})
+}
+
+// session represent a persistent database session.
+type session struct {
+ // Need 64-bit alignment.
+ stNextFileNum int64 // current unused file number
+ stJournalNum int64 // current journal file number; need external synchronization
+ stPrevJournalNum int64 // prev journal file number; no longer used; for compatibility with older version of leveldb
+ stTempFileNum int64
+ stSeqNum uint64 // last mem compacted seq; need external synchronization
+
+ stor *iStorage
+ storLock storage.Locker
+ o *cachedOptions
+ icmp *iComparer
+ tops *tOps
+ fileRef map[int64]int
+
+ manifest *journal.Writer
+ manifestWriter storage.Writer
+ manifestFd storage.FileDesc
+
+ stCompPtrs []internalKey // compaction pointers; need external synchronization
+ stVersion *version // current version
+ vmu sync.Mutex
+}
+
+// Creates new initialized session instance.
+func newSession(stor storage.Storage, o *opt.Options) (s *session, err error) {
+ if stor == nil {
+ return nil, os.ErrInvalid
+ }
+ storLock, err := stor.Lock()
+ if err != nil {
+ return
+ }
+ s = &session{
+ stor: newIStorage(stor),
+ storLock: storLock,
+ fileRef: make(map[int64]int),
+ }
+ s.setOptions(o)
+ s.tops = newTableOps(s)
+ s.setVersion(newVersion(s))
+ s.log("log@legend F·NumFile S·FileSize N·Entry C·BadEntry B·BadBlock Ke·KeyError D·DroppedEntry L·Level Q·SeqNum T·TimeElapsed")
+ return
+}
+
+// Close session.
+func (s *session) close() {
+ s.tops.close()
+ if s.manifest != nil {
+ s.manifest.Close()
+ }
+ if s.manifestWriter != nil {
+ s.manifestWriter.Close()
+ }
+ s.manifest = nil
+ s.manifestWriter = nil
+ s.setVersion(&version{s: s, closing: true})
+}
+
+// Release session lock.
+func (s *session) release() {
+ s.storLock.Unlock()
+}
+
+// Create a new database session; need external synchronization.
+func (s *session) create() error {
+ // create manifest
+ return s.newManifest(nil, nil)
+}
+
+// Recover a database session; need external synchronization.
+func (s *session) recover() (err error) {
+ defer func() {
+ if os.IsNotExist(err) {
+ // Don't return os.ErrNotExist if the underlying storage contains
+ // other files that belong to LevelDB. So the DB won't get trashed.
+ if fds, _ := s.stor.List(storage.TypeAll); len(fds) > 0 {
+ err = &errors.ErrCorrupted{Fd: storage.FileDesc{Type: storage.TypeManifest}, Err: &errors.ErrMissingFiles{}}
+ }
+ }
+ }()
+
+ fd, err := s.stor.GetMeta()
+ if err != nil {
+ return
+ }
+
+ reader, err := s.stor.Open(fd)
+ if err != nil {
+ return
+ }
+ defer reader.Close()
+
+ var (
+ // Options.
+ strict = s.o.GetStrict(opt.StrictManifest)
+
+ jr = journal.NewReader(reader, dropper{s, fd}, strict, true)
+ rec = &sessionRecord{}
+ staging = s.stVersion.newStaging()
+ )
+ for {
+ var r io.Reader
+ r, err = jr.Next()
+ if err != nil {
+ if err == io.EOF {
+ err = nil
+ break
+ }
+ return errors.SetFd(err, fd)
+ }
+
+ err = rec.decode(r)
+ if err == nil {
+ // save compact pointers
+ for _, r := range rec.compPtrs {
+ s.setCompPtr(r.level, internalKey(r.ikey))
+ }
+ // commit record to version staging
+ staging.commit(rec)
+ } else {
+ err = errors.SetFd(err, fd)
+ if strict || !errors.IsCorrupted(err) {
+ return
+ }
+ s.logf("manifest error: %v (skipped)", errors.SetFd(err, fd))
+ }
+ rec.resetCompPtrs()
+ rec.resetAddedTables()
+ rec.resetDeletedTables()
+ }
+
+ switch {
+ case !rec.has(recComparer):
+ return newErrManifestCorrupted(fd, "comparer", "missing")
+ case rec.comparer != s.icmp.uName():
+ return newErrManifestCorrupted(fd, "comparer", fmt.Sprintf("mismatch: want '%s', got '%s'", s.icmp.uName(), rec.comparer))
+ case !rec.has(recNextFileNum):
+ return newErrManifestCorrupted(fd, "next-file-num", "missing")
+ case !rec.has(recJournalNum):
+ return newErrManifestCorrupted(fd, "journal-file-num", "missing")
+ case !rec.has(recSeqNum):
+ return newErrManifestCorrupted(fd, "seq-num", "missing")
+ }
+
+ s.manifestFd = fd
+ s.setVersion(staging.finish())
+ s.setNextFileNum(rec.nextFileNum)
+ s.recordCommited(rec)
+ return nil
+}
+
+// Commit session; need external synchronization.
+func (s *session) commit(r *sessionRecord) (err error) {
+ v := s.version()
+ defer v.release()
+
+ // spawn new version based on current version
+ nv := v.spawn(r)
+
+ if s.manifest == nil {
+ // manifest journal writer not yet created, create one
+ err = s.newManifest(r, nv)
+ } else {
+ err = s.flushManifest(r)
+ }
+
+ // finally, apply new version if no error rise
+ if err == nil {
+ s.setVersion(nv)
+ }
+
+ return
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/session_compaction.go b/vendor/github.com/syndtr/goleveldb/leveldb/session_compaction.go
new file mode 100644
index 0000000..089cd00
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/session_compaction.go
@@ -0,0 +1,302 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "sync/atomic"
+
+ "github.com/syndtr/goleveldb/leveldb/iterator"
+ "github.com/syndtr/goleveldb/leveldb/memdb"
+ "github.com/syndtr/goleveldb/leveldb/opt"
+)
+
+func (s *session) pickMemdbLevel(umin, umax []byte, maxLevel int) int {
+ v := s.version()
+ defer v.release()
+ return v.pickMemdbLevel(umin, umax, maxLevel)
+}
+
+func (s *session) flushMemdb(rec *sessionRecord, mdb *memdb.DB, maxLevel int) (int, error) {
+ // Create sorted table.
+ iter := mdb.NewIterator(nil)
+ defer iter.Release()
+ t, n, err := s.tops.createFrom(iter)
+ if err != nil {
+ return 0, err
+ }
+
+ // Pick level other than zero can cause compaction issue with large
+ // bulk insert and delete on strictly incrementing key-space. The
+ // problem is that the small deletion markers trapped at lower level,
+ // while key/value entries keep growing at higher level. Since the
+ // key-space is strictly incrementing it will not overlaps with
+ // higher level, thus maximum possible level is always picked, while
+ // overlapping deletion marker pushed into lower level.
+ // See: https://github.com/syndtr/goleveldb/issues/127.
+ flushLevel := s.pickMemdbLevel(t.imin.ukey(), t.imax.ukey(), maxLevel)
+ rec.addTableFile(flushLevel, t)
+
+ s.logf("memdb@flush created L%d@%d N·%d S·%s %q:%q", flushLevel, t.fd.Num, n, shortenb(int(t.size)), t.imin, t.imax)
+ return flushLevel, nil
+}
+
+// Pick a compaction based on current state; need external synchronization.
+func (s *session) pickCompaction() *compaction {
+ v := s.version()
+
+ var sourceLevel int
+ var t0 tFiles
+ if v.cScore >= 1 {
+ sourceLevel = v.cLevel
+ cptr := s.getCompPtr(sourceLevel)
+ tables := v.levels[sourceLevel]
+ for _, t := range tables {
+ if cptr == nil || s.icmp.Compare(t.imax, cptr) > 0 {
+ t0 = append(t0, t)
+ break
+ }
+ }
+ if len(t0) == 0 {
+ t0 = append(t0, tables[0])
+ }
+ } else {
+ if p := atomic.LoadPointer(&v.cSeek); p != nil {
+ ts := (*tSet)(p)
+ sourceLevel = ts.level
+ t0 = append(t0, ts.table)
+ } else {
+ v.release()
+ return nil
+ }
+ }
+
+ return newCompaction(s, v, sourceLevel, t0)
+}
+
+// Create compaction from given level and range; need external synchronization.
+func (s *session) getCompactionRange(sourceLevel int, umin, umax []byte, noLimit bool) *compaction {
+ v := s.version()
+
+ if sourceLevel >= len(v.levels) {
+ v.release()
+ return nil
+ }
+
+ t0 := v.levels[sourceLevel].getOverlaps(nil, s.icmp, umin, umax, sourceLevel == 0)
+ if len(t0) == 0 {
+ v.release()
+ return nil
+ }
+
+ // Avoid compacting too much in one shot in case the range is large.
+ // But we cannot do this for level-0 since level-0 files can overlap
+ // and we must not pick one file and drop another older file if the
+ // two files overlap.
+ if !noLimit && sourceLevel > 0 {
+ limit := int64(v.s.o.GetCompactionSourceLimit(sourceLevel))
+ total := int64(0)
+ for i, t := range t0 {
+ total += t.size
+ if total >= limit {
+ s.logf("table@compaction limiting F·%d -> F·%d", len(t0), i+1)
+ t0 = t0[:i+1]
+ break
+ }
+ }
+ }
+
+ return newCompaction(s, v, sourceLevel, t0)
+}
+
+func newCompaction(s *session, v *version, sourceLevel int, t0 tFiles) *compaction {
+ c := &compaction{
+ s: s,
+ v: v,
+ sourceLevel: sourceLevel,
+ levels: [2]tFiles{t0, nil},
+ maxGPOverlaps: int64(s.o.GetCompactionGPOverlaps(sourceLevel)),
+ tPtrs: make([]int, len(v.levels)),
+ }
+ c.expand()
+ c.save()
+ return c
+}
+
+// compaction represent a compaction state.
+type compaction struct {
+ s *session
+ v *version
+
+ sourceLevel int
+ levels [2]tFiles
+ maxGPOverlaps int64
+
+ gp tFiles
+ gpi int
+ seenKey bool
+ gpOverlappedBytes int64
+ imin, imax internalKey
+ tPtrs []int
+ released bool
+
+ snapGPI int
+ snapSeenKey bool
+ snapGPOverlappedBytes int64
+ snapTPtrs []int
+}
+
+func (c *compaction) save() {
+ c.snapGPI = c.gpi
+ c.snapSeenKey = c.seenKey
+ c.snapGPOverlappedBytes = c.gpOverlappedBytes
+ c.snapTPtrs = append(c.snapTPtrs[:0], c.tPtrs...)
+}
+
+func (c *compaction) restore() {
+ c.gpi = c.snapGPI
+ c.seenKey = c.snapSeenKey
+ c.gpOverlappedBytes = c.snapGPOverlappedBytes
+ c.tPtrs = append(c.tPtrs[:0], c.snapTPtrs...)
+}
+
+func (c *compaction) release() {
+ if !c.released {
+ c.released = true
+ c.v.release()
+ }
+}
+
+// Expand compacted tables; need external synchronization.
+func (c *compaction) expand() {
+ limit := int64(c.s.o.GetCompactionExpandLimit(c.sourceLevel))
+ vt0 := c.v.levels[c.sourceLevel]
+ vt1 := tFiles{}
+ if level := c.sourceLevel + 1; level < len(c.v.levels) {
+ vt1 = c.v.levels[level]
+ }
+
+ t0, t1 := c.levels[0], c.levels[1]
+ imin, imax := t0.getRange(c.s.icmp)
+ // We expand t0 here just incase ukey hop across tables.
+ t0 = vt0.getOverlaps(t0, c.s.icmp, imin.ukey(), imax.ukey(), c.sourceLevel == 0)
+ if len(t0) != len(c.levels[0]) {
+ imin, imax = t0.getRange(c.s.icmp)
+ }
+ t1 = vt1.getOverlaps(t1, c.s.icmp, imin.ukey(), imax.ukey(), false)
+ // Get entire range covered by compaction.
+ amin, amax := append(t0, t1...).getRange(c.s.icmp)
+
+ // See if we can grow the number of inputs in "sourceLevel" without
+ // changing the number of "sourceLevel+1" files we pick up.
+ if len(t1) > 0 {
+ exp0 := vt0.getOverlaps(nil, c.s.icmp, amin.ukey(), amax.ukey(), c.sourceLevel == 0)
+ if len(exp0) > len(t0) && t1.size()+exp0.size() < limit {
+ xmin, xmax := exp0.getRange(c.s.icmp)
+ exp1 := vt1.getOverlaps(nil, c.s.icmp, xmin.ukey(), xmax.ukey(), false)
+ if len(exp1) == len(t1) {
+ c.s.logf("table@compaction expanding L%d+L%d (F·%d S·%s)+(F·%d S·%s) -> (F·%d S·%s)+(F·%d S·%s)",
+ c.sourceLevel, c.sourceLevel+1, len(t0), shortenb(int(t0.size())), len(t1), shortenb(int(t1.size())),
+ len(exp0), shortenb(int(exp0.size())), len(exp1), shortenb(int(exp1.size())))
+ imin, imax = xmin, xmax
+ t0, t1 = exp0, exp1
+ amin, amax = append(t0, t1...).getRange(c.s.icmp)
+ }
+ }
+ }
+
+ // Compute the set of grandparent files that overlap this compaction
+ // (parent == sourceLevel+1; grandparent == sourceLevel+2)
+ if level := c.sourceLevel + 2; level < len(c.v.levels) {
+ c.gp = c.v.levels[level].getOverlaps(c.gp, c.s.icmp, amin.ukey(), amax.ukey(), false)
+ }
+
+ c.levels[0], c.levels[1] = t0, t1
+ c.imin, c.imax = imin, imax
+}
+
+// Check whether compaction is trivial.
+func (c *compaction) trivial() bool {
+ return len(c.levels[0]) == 1 && len(c.levels[1]) == 0 && c.gp.size() <= c.maxGPOverlaps
+}
+
+func (c *compaction) baseLevelForKey(ukey []byte) bool {
+ for level := c.sourceLevel + 2; level < len(c.v.levels); level++ {
+ tables := c.v.levels[level]
+ for c.tPtrs[level] < len(tables) {
+ t := tables[c.tPtrs[level]]
+ if c.s.icmp.uCompare(ukey, t.imax.ukey()) <= 0 {
+ // We've advanced far enough.
+ if c.s.icmp.uCompare(ukey, t.imin.ukey()) >= 0 {
+ // Key falls in this file's range, so definitely not base level.
+ return false
+ }
+ break
+ }
+ c.tPtrs[level]++
+ }
+ }
+ return true
+}
+
+func (c *compaction) shouldStopBefore(ikey internalKey) bool {
+ for ; c.gpi < len(c.gp); c.gpi++ {
+ gp := c.gp[c.gpi]
+ if c.s.icmp.Compare(ikey, gp.imax) <= 0 {
+ break
+ }
+ if c.seenKey {
+ c.gpOverlappedBytes += gp.size
+ }
+ }
+ c.seenKey = true
+
+ if c.gpOverlappedBytes > c.maxGPOverlaps {
+ // Too much overlap for current output; start new output.
+ c.gpOverlappedBytes = 0
+ return true
+ }
+ return false
+}
+
+// Creates an iterator.
+func (c *compaction) newIterator() iterator.Iterator {
+ // Creates iterator slice.
+ icap := len(c.levels)
+ if c.sourceLevel == 0 {
+ // Special case for level-0.
+ icap = len(c.levels[0]) + 1
+ }
+ its := make([]iterator.Iterator, 0, icap)
+
+ // Options.
+ ro := &opt.ReadOptions{
+ DontFillCache: true,
+ Strict: opt.StrictOverride,
+ }
+ strict := c.s.o.GetStrict(opt.StrictCompaction)
+ if strict {
+ ro.Strict |= opt.StrictReader
+ }
+
+ for i, tables := range c.levels {
+ if len(tables) == 0 {
+ continue
+ }
+
+ // Level-0 is not sorted and may overlaps each other.
+ if c.sourceLevel+i == 0 {
+ for _, t := range tables {
+ its = append(its, c.s.tops.newIterator(t, nil, ro))
+ }
+ } else {
+ it := iterator.NewIndexedIterator(tables.newIndexIterator(c.s.tops, c.s.icmp, nil, ro), strict)
+ its = append(its, it)
+ }
+ }
+
+ return iterator.NewMergedIterator(its, c.s.icmp, strict)
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/session_record.go b/vendor/github.com/syndtr/goleveldb/leveldb/session_record.go
new file mode 100644
index 0000000..854e1aa
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/session_record.go
@@ -0,0 +1,323 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "bufio"
+ "encoding/binary"
+ "io"
+ "strings"
+
+ "github.com/syndtr/goleveldb/leveldb/errors"
+ "github.com/syndtr/goleveldb/leveldb/storage"
+)
+
+type byteReader interface {
+ io.Reader
+ io.ByteReader
+}
+
+// These numbers are written to disk and should not be changed.
+const (
+ recComparer = 1
+ recJournalNum = 2
+ recNextFileNum = 3
+ recSeqNum = 4
+ recCompPtr = 5
+ recDelTable = 6
+ recAddTable = 7
+ // 8 was used for large value refs
+ recPrevJournalNum = 9
+)
+
+type cpRecord struct {
+ level int
+ ikey internalKey
+}
+
+type atRecord struct {
+ level int
+ num int64
+ size int64
+ imin internalKey
+ imax internalKey
+}
+
+type dtRecord struct {
+ level int
+ num int64
+}
+
+type sessionRecord struct {
+ hasRec int
+ comparer string
+ journalNum int64
+ prevJournalNum int64
+ nextFileNum int64
+ seqNum uint64
+ compPtrs []cpRecord
+ addedTables []atRecord
+ deletedTables []dtRecord
+
+ scratch [binary.MaxVarintLen64]byte
+ err error
+}
+
+func (p *sessionRecord) has(rec int) bool {
+ return p.hasRec&(1<
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "fmt"
+ "sync/atomic"
+
+ "github.com/syndtr/goleveldb/leveldb/journal"
+ "github.com/syndtr/goleveldb/leveldb/storage"
+)
+
+// Logging.
+
+type dropper struct {
+ s *session
+ fd storage.FileDesc
+}
+
+func (d dropper) Drop(err error) {
+ if e, ok := err.(*journal.ErrCorrupted); ok {
+ d.s.logf("journal@drop %s-%d S·%s %q", d.fd.Type, d.fd.Num, shortenb(e.Size), e.Reason)
+ } else {
+ d.s.logf("journal@drop %s-%d %q", d.fd.Type, d.fd.Num, err)
+ }
+}
+
+func (s *session) log(v ...interface{}) { s.stor.Log(fmt.Sprint(v...)) }
+func (s *session) logf(format string, v ...interface{}) { s.stor.Log(fmt.Sprintf(format, v...)) }
+
+// File utils.
+
+func (s *session) newTemp() storage.FileDesc {
+ num := atomic.AddInt64(&s.stTempFileNum, 1) - 1
+ return storage.FileDesc{Type: storage.TypeTemp, Num: num}
+}
+
+func (s *session) addFileRef(fd storage.FileDesc, ref int) int {
+ ref += s.fileRef[fd.Num]
+ if ref > 0 {
+ s.fileRef[fd.Num] = ref
+ } else if ref == 0 {
+ delete(s.fileRef, fd.Num)
+ } else {
+ panic(fmt.Sprintf("negative ref: %v", fd))
+ }
+ return ref
+}
+
+// Session state.
+
+// Get current version. This will incr version ref, must call
+// version.release (exactly once) after use.
+func (s *session) version() *version {
+ s.vmu.Lock()
+ defer s.vmu.Unlock()
+ s.stVersion.incref()
+ return s.stVersion
+}
+
+func (s *session) tLen(level int) int {
+ s.vmu.Lock()
+ defer s.vmu.Unlock()
+ return s.stVersion.tLen(level)
+}
+
+// Set current version to v.
+func (s *session) setVersion(v *version) {
+ s.vmu.Lock()
+ defer s.vmu.Unlock()
+ // Hold by session. It is important to call this first before releasing
+ // current version, otherwise the still used files might get released.
+ v.incref()
+ if s.stVersion != nil {
+ // Release current version.
+ s.stVersion.releaseNB()
+ }
+ s.stVersion = v
+}
+
+// Get current unused file number.
+func (s *session) nextFileNum() int64 {
+ return atomic.LoadInt64(&s.stNextFileNum)
+}
+
+// Set current unused file number to num.
+func (s *session) setNextFileNum(num int64) {
+ atomic.StoreInt64(&s.stNextFileNum, num)
+}
+
+// Mark file number as used.
+func (s *session) markFileNum(num int64) {
+ nextFileNum := num + 1
+ for {
+ old, x := s.stNextFileNum, nextFileNum
+ if old > x {
+ x = old
+ }
+ if atomic.CompareAndSwapInt64(&s.stNextFileNum, old, x) {
+ break
+ }
+ }
+}
+
+// Allocate a file number.
+func (s *session) allocFileNum() int64 {
+ return atomic.AddInt64(&s.stNextFileNum, 1) - 1
+}
+
+// Reuse given file number.
+func (s *session) reuseFileNum(num int64) {
+ for {
+ old, x := s.stNextFileNum, num
+ if old != x+1 {
+ x = old
+ }
+ if atomic.CompareAndSwapInt64(&s.stNextFileNum, old, x) {
+ break
+ }
+ }
+}
+
+// Set compaction ptr at given level; need external synchronization.
+func (s *session) setCompPtr(level int, ik internalKey) {
+ if level >= len(s.stCompPtrs) {
+ newCompPtrs := make([]internalKey, level+1)
+ copy(newCompPtrs, s.stCompPtrs)
+ s.stCompPtrs = newCompPtrs
+ }
+ s.stCompPtrs[level] = append(internalKey{}, ik...)
+}
+
+// Get compaction ptr at given level; need external synchronization.
+func (s *session) getCompPtr(level int) internalKey {
+ if level >= len(s.stCompPtrs) {
+ return nil
+ }
+ return s.stCompPtrs[level]
+}
+
+// Manifest related utils.
+
+// Fill given session record obj with current states; need external
+// synchronization.
+func (s *session) fillRecord(r *sessionRecord, snapshot bool) {
+ r.setNextFileNum(s.nextFileNum())
+
+ if snapshot {
+ if !r.has(recJournalNum) {
+ r.setJournalNum(s.stJournalNum)
+ }
+
+ if !r.has(recSeqNum) {
+ r.setSeqNum(s.stSeqNum)
+ }
+
+ for level, ik := range s.stCompPtrs {
+ if ik != nil {
+ r.addCompPtr(level, ik)
+ }
+ }
+
+ r.setComparer(s.icmp.uName())
+ }
+}
+
+// Mark if record has been committed, this will update session state;
+// need external synchronization.
+func (s *session) recordCommited(rec *sessionRecord) {
+ if rec.has(recJournalNum) {
+ s.stJournalNum = rec.journalNum
+ }
+
+ if rec.has(recPrevJournalNum) {
+ s.stPrevJournalNum = rec.prevJournalNum
+ }
+
+ if rec.has(recSeqNum) {
+ s.stSeqNum = rec.seqNum
+ }
+
+ for _, r := range rec.compPtrs {
+ s.setCompPtr(r.level, internalKey(r.ikey))
+ }
+}
+
+// Create a new manifest file; need external synchronization.
+func (s *session) newManifest(rec *sessionRecord, v *version) (err error) {
+ fd := storage.FileDesc{Type: storage.TypeManifest, Num: s.allocFileNum()}
+ writer, err := s.stor.Create(fd)
+ if err != nil {
+ return
+ }
+ jw := journal.NewWriter(writer)
+
+ if v == nil {
+ v = s.version()
+ defer v.release()
+ }
+ if rec == nil {
+ rec = &sessionRecord{}
+ }
+ s.fillRecord(rec, true)
+ v.fillRecord(rec)
+
+ defer func() {
+ if err == nil {
+ s.recordCommited(rec)
+ if s.manifest != nil {
+ s.manifest.Close()
+ }
+ if s.manifestWriter != nil {
+ s.manifestWriter.Close()
+ }
+ if !s.manifestFd.Zero() {
+ s.stor.Remove(s.manifestFd)
+ }
+ s.manifestFd = fd
+ s.manifestWriter = writer
+ s.manifest = jw
+ } else {
+ writer.Close()
+ s.stor.Remove(fd)
+ s.reuseFileNum(fd.Num)
+ }
+ }()
+
+ w, err := jw.Next()
+ if err != nil {
+ return
+ }
+ err = rec.encode(w)
+ if err != nil {
+ return
+ }
+ err = jw.Flush()
+ if err != nil {
+ return
+ }
+ err = s.stor.SetMeta(fd)
+ return
+}
+
+// Flush record to disk.
+func (s *session) flushManifest(rec *sessionRecord) (err error) {
+ s.fillRecord(rec, false)
+ w, err := s.manifest.Next()
+ if err != nil {
+ return
+ }
+ err = rec.encode(w)
+ if err != nil {
+ return
+ }
+ err = s.manifest.Flush()
+ if err != nil {
+ return
+ }
+ if !s.o.GetNoSync() {
+ err = s.manifestWriter.Sync()
+ if err != nil {
+ return
+ }
+ }
+ s.recordCommited(rec)
+ return
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/storage.go b/vendor/github.com/syndtr/goleveldb/leveldb/storage.go
new file mode 100644
index 0000000..d45fb5d
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/storage.go
@@ -0,0 +1,63 @@
+package leveldb
+
+import (
+ "github.com/syndtr/goleveldb/leveldb/storage"
+ "sync/atomic"
+)
+
+type iStorage struct {
+ storage.Storage
+ read uint64
+ write uint64
+}
+
+func (c *iStorage) Open(fd storage.FileDesc) (storage.Reader, error) {
+ r, err := c.Storage.Open(fd)
+ return &iStorageReader{r, c}, err
+}
+
+func (c *iStorage) Create(fd storage.FileDesc) (storage.Writer, error) {
+ w, err := c.Storage.Create(fd)
+ return &iStorageWriter{w, c}, err
+}
+
+func (c *iStorage) reads() uint64 {
+ return atomic.LoadUint64(&c.read)
+}
+
+func (c *iStorage) writes() uint64 {
+ return atomic.LoadUint64(&c.write)
+}
+
+// newIStorage returns the given storage wrapped by iStorage.
+func newIStorage(s storage.Storage) *iStorage {
+ return &iStorage{s, 0, 0}
+}
+
+type iStorageReader struct {
+ storage.Reader
+ c *iStorage
+}
+
+func (r *iStorageReader) Read(p []byte) (n int, err error) {
+ n, err = r.Reader.Read(p)
+ atomic.AddUint64(&r.c.read, uint64(n))
+ return n, err
+}
+
+func (r *iStorageReader) ReadAt(p []byte, off int64) (n int, err error) {
+ n, err = r.Reader.ReadAt(p, off)
+ atomic.AddUint64(&r.c.read, uint64(n))
+ return n, err
+}
+
+type iStorageWriter struct {
+ storage.Writer
+ c *iStorage
+}
+
+func (w *iStorageWriter) Write(p []byte) (n int, err error) {
+ n, err = w.Writer.Write(p)
+ atomic.AddUint64(&w.c.write, uint64(n))
+ return n, err
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage.go b/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage.go
new file mode 100644
index 0000000..9ba71fd
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage.go
@@ -0,0 +1,671 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reservefs.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package storage
+
+import (
+ "errors"
+ "fmt"
+ "io"
+ "io/ioutil"
+ "os"
+ "path/filepath"
+ "runtime"
+ "sort"
+ "strconv"
+ "strings"
+ "sync"
+ "time"
+)
+
+var (
+ errFileOpen = errors.New("leveldb/storage: file still open")
+ errReadOnly = errors.New("leveldb/storage: storage is read-only")
+)
+
+type fileLock interface {
+ release() error
+}
+
+type fileStorageLock struct {
+ fs *fileStorage
+}
+
+func (lock *fileStorageLock) Unlock() {
+ if lock.fs != nil {
+ lock.fs.mu.Lock()
+ defer lock.fs.mu.Unlock()
+ if lock.fs.slock == lock {
+ lock.fs.slock = nil
+ }
+ }
+}
+
+type int64Slice []int64
+
+func (p int64Slice) Len() int { return len(p) }
+func (p int64Slice) Less(i, j int) bool { return p[i] < p[j] }
+func (p int64Slice) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
+
+func writeFileSynced(filename string, data []byte, perm os.FileMode) error {
+ f, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, perm)
+ if err != nil {
+ return err
+ }
+ n, err := f.Write(data)
+ if err == nil && n < len(data) {
+ err = io.ErrShortWrite
+ }
+ if err1 := f.Sync(); err == nil {
+ err = err1
+ }
+ if err1 := f.Close(); err == nil {
+ err = err1
+ }
+ return err
+}
+
+const logSizeThreshold = 1024 * 1024 // 1 MiB
+
+// fileStorage is a file-system backed storage.
+type fileStorage struct {
+ path string
+ readOnly bool
+
+ mu sync.Mutex
+ flock fileLock
+ slock *fileStorageLock
+ logw *os.File
+ logSize int64
+ buf []byte
+ // Opened file counter; if open < 0 means closed.
+ open int
+ day int
+}
+
+// OpenFile returns a new filesystem-backed storage implementation with the given
+// path. This also acquire a file lock, so any subsequent attempt to open the
+// same path will fail.
+//
+// The storage must be closed after use, by calling Close method.
+func OpenFile(path string, readOnly bool) (Storage, error) {
+ if fi, err := os.Stat(path); err == nil {
+ if !fi.IsDir() {
+ return nil, fmt.Errorf("leveldb/storage: open %s: not a directory", path)
+ }
+ } else if os.IsNotExist(err) && !readOnly {
+ if err := os.MkdirAll(path, 0755); err != nil {
+ return nil, err
+ }
+ } else {
+ return nil, err
+ }
+
+ flock, err := newFileLock(filepath.Join(path, "LOCK"), readOnly)
+ if err != nil {
+ return nil, err
+ }
+
+ defer func() {
+ if err != nil {
+ flock.release()
+ }
+ }()
+
+ var (
+ logw *os.File
+ logSize int64
+ )
+ if !readOnly {
+ logw, err = os.OpenFile(filepath.Join(path, "LOG"), os.O_WRONLY|os.O_CREATE, 0644)
+ if err != nil {
+ return nil, err
+ }
+ logSize, err = logw.Seek(0, os.SEEK_END)
+ if err != nil {
+ logw.Close()
+ return nil, err
+ }
+ }
+
+ fs := &fileStorage{
+ path: path,
+ readOnly: readOnly,
+ flock: flock,
+ logw: logw,
+ logSize: logSize,
+ }
+ runtime.SetFinalizer(fs, (*fileStorage).Close)
+ return fs, nil
+}
+
+func (fs *fileStorage) Lock() (Locker, error) {
+ fs.mu.Lock()
+ defer fs.mu.Unlock()
+ if fs.open < 0 {
+ return nil, ErrClosed
+ }
+ if fs.readOnly {
+ return &fileStorageLock{}, nil
+ }
+ if fs.slock != nil {
+ return nil, ErrLocked
+ }
+ fs.slock = &fileStorageLock{fs: fs}
+ return fs.slock, nil
+}
+
+func itoa(buf []byte, i int, wid int) []byte {
+ u := uint(i)
+ if u == 0 && wid <= 1 {
+ return append(buf, '0')
+ }
+
+ // Assemble decimal in reverse order.
+ var b [32]byte
+ bp := len(b)
+ for ; u > 0 || wid > 0; u /= 10 {
+ bp--
+ wid--
+ b[bp] = byte(u%10) + '0'
+ }
+ return append(buf, b[bp:]...)
+}
+
+func (fs *fileStorage) printDay(t time.Time) {
+ if fs.day == t.Day() {
+ return
+ }
+ fs.day = t.Day()
+ fs.logw.Write([]byte("=============== " + t.Format("Jan 2, 2006 (MST)") + " ===============\n"))
+}
+
+func (fs *fileStorage) doLog(t time.Time, str string) {
+ if fs.logSize > logSizeThreshold {
+ // Rotate log file.
+ fs.logw.Close()
+ fs.logw = nil
+ fs.logSize = 0
+ rename(filepath.Join(fs.path, "LOG"), filepath.Join(fs.path, "LOG.old"))
+ }
+ if fs.logw == nil {
+ var err error
+ fs.logw, err = os.OpenFile(filepath.Join(fs.path, "LOG"), os.O_WRONLY|os.O_CREATE, 0644)
+ if err != nil {
+ return
+ }
+ // Force printDay on new log file.
+ fs.day = 0
+ }
+ fs.printDay(t)
+ hour, min, sec := t.Clock()
+ msec := t.Nanosecond() / 1e3
+ // time
+ fs.buf = itoa(fs.buf[:0], hour, 2)
+ fs.buf = append(fs.buf, ':')
+ fs.buf = itoa(fs.buf, min, 2)
+ fs.buf = append(fs.buf, ':')
+ fs.buf = itoa(fs.buf, sec, 2)
+ fs.buf = append(fs.buf, '.')
+ fs.buf = itoa(fs.buf, msec, 6)
+ fs.buf = append(fs.buf, ' ')
+ // write
+ fs.buf = append(fs.buf, []byte(str)...)
+ fs.buf = append(fs.buf, '\n')
+ n, _ := fs.logw.Write(fs.buf)
+ fs.logSize += int64(n)
+}
+
+func (fs *fileStorage) Log(str string) {
+ if !fs.readOnly {
+ t := time.Now()
+ fs.mu.Lock()
+ defer fs.mu.Unlock()
+ if fs.open < 0 {
+ return
+ }
+ fs.doLog(t, str)
+ }
+}
+
+func (fs *fileStorage) log(str string) {
+ if !fs.readOnly {
+ fs.doLog(time.Now(), str)
+ }
+}
+
+func (fs *fileStorage) setMeta(fd FileDesc) error {
+ content := fsGenName(fd) + "\n"
+ // Check and backup old CURRENT file.
+ currentPath := filepath.Join(fs.path, "CURRENT")
+ if _, err := os.Stat(currentPath); err == nil {
+ b, err := ioutil.ReadFile(currentPath)
+ if err != nil {
+ fs.log(fmt.Sprintf("backup CURRENT: %v", err))
+ return err
+ }
+ if string(b) == content {
+ // Content not changed, do nothing.
+ return nil
+ }
+ if err := writeFileSynced(currentPath+".bak", b, 0644); err != nil {
+ fs.log(fmt.Sprintf("backup CURRENT: %v", err))
+ return err
+ }
+ } else if !os.IsNotExist(err) {
+ return err
+ }
+ path := fmt.Sprintf("%s.%d", filepath.Join(fs.path, "CURRENT"), fd.Num)
+ if err := writeFileSynced(path, []byte(content), 0644); err != nil {
+ fs.log(fmt.Sprintf("create CURRENT.%d: %v", fd.Num, err))
+ return err
+ }
+ // Replace CURRENT file.
+ if err := rename(path, currentPath); err != nil {
+ fs.log(fmt.Sprintf("rename CURRENT.%d: %v", fd.Num, err))
+ return err
+ }
+ // Sync root directory.
+ if err := syncDir(fs.path); err != nil {
+ fs.log(fmt.Sprintf("syncDir: %v", err))
+ return err
+ }
+ return nil
+}
+
+func (fs *fileStorage) SetMeta(fd FileDesc) error {
+ if !FileDescOk(fd) {
+ return ErrInvalidFile
+ }
+ if fs.readOnly {
+ return errReadOnly
+ }
+
+ fs.mu.Lock()
+ defer fs.mu.Unlock()
+ if fs.open < 0 {
+ return ErrClosed
+ }
+ return fs.setMeta(fd)
+}
+
+func (fs *fileStorage) GetMeta() (FileDesc, error) {
+ fs.mu.Lock()
+ defer fs.mu.Unlock()
+ if fs.open < 0 {
+ return FileDesc{}, ErrClosed
+ }
+ dir, err := os.Open(fs.path)
+ if err != nil {
+ return FileDesc{}, err
+ }
+ names, err := dir.Readdirnames(0)
+ // Close the dir first before checking for Readdirnames error.
+ if ce := dir.Close(); ce != nil {
+ fs.log(fmt.Sprintf("close dir: %v", ce))
+ }
+ if err != nil {
+ return FileDesc{}, err
+ }
+ // Try this in order:
+ // - CURRENT.[0-9]+ ('pending rename' file, descending order)
+ // - CURRENT
+ // - CURRENT.bak
+ //
+ // Skip corrupted file or file that point to a missing target file.
+ type currentFile struct {
+ name string
+ fd FileDesc
+ }
+ tryCurrent := func(name string) (*currentFile, error) {
+ b, err := ioutil.ReadFile(filepath.Join(fs.path, name))
+ if err != nil {
+ if os.IsNotExist(err) {
+ err = os.ErrNotExist
+ }
+ return nil, err
+ }
+ var fd FileDesc
+ if len(b) < 1 || b[len(b)-1] != '\n' || !fsParseNamePtr(string(b[:len(b)-1]), &fd) {
+ fs.log(fmt.Sprintf("%s: corrupted content: %q", name, b))
+ err := &ErrCorrupted{
+ Err: errors.New("leveldb/storage: corrupted or incomplete CURRENT file"),
+ }
+ return nil, err
+ }
+ if _, err := os.Stat(filepath.Join(fs.path, fsGenName(fd))); err != nil {
+ if os.IsNotExist(err) {
+ fs.log(fmt.Sprintf("%s: missing target file: %s", name, fd))
+ err = os.ErrNotExist
+ }
+ return nil, err
+ }
+ return ¤tFile{name: name, fd: fd}, nil
+ }
+ tryCurrents := func(names []string) (*currentFile, error) {
+ var (
+ cur *currentFile
+ // Last corruption error.
+ lastCerr error
+ )
+ for _, name := range names {
+ var err error
+ cur, err = tryCurrent(name)
+ if err == nil {
+ break
+ } else if err == os.ErrNotExist {
+ // Fallback to the next file.
+ } else if isCorrupted(err) {
+ lastCerr = err
+ // Fallback to the next file.
+ } else {
+ // In case the error is due to permission, etc.
+ return nil, err
+ }
+ }
+ if cur == nil {
+ err := os.ErrNotExist
+ if lastCerr != nil {
+ err = lastCerr
+ }
+ return nil, err
+ }
+ return cur, nil
+ }
+
+ // Try 'pending rename' files.
+ var nums []int64
+ for _, name := range names {
+ if strings.HasPrefix(name, "CURRENT.") && name != "CURRENT.bak" {
+ i, err := strconv.ParseInt(name[8:], 10, 64)
+ if err == nil {
+ nums = append(nums, i)
+ }
+ }
+ }
+ var (
+ pendCur *currentFile
+ pendErr = os.ErrNotExist
+ pendNames []string
+ )
+ if len(nums) > 0 {
+ sort.Sort(sort.Reverse(int64Slice(nums)))
+ pendNames = make([]string, len(nums))
+ for i, num := range nums {
+ pendNames[i] = fmt.Sprintf("CURRENT.%d", num)
+ }
+ pendCur, pendErr = tryCurrents(pendNames)
+ if pendErr != nil && pendErr != os.ErrNotExist && !isCorrupted(pendErr) {
+ return FileDesc{}, pendErr
+ }
+ }
+
+ // Try CURRENT and CURRENT.bak.
+ curCur, curErr := tryCurrents([]string{"CURRENT", "CURRENT.bak"})
+ if curErr != nil && curErr != os.ErrNotExist && !isCorrupted(curErr) {
+ return FileDesc{}, curErr
+ }
+
+ // pendCur takes precedence, but guards against obsolete pendCur.
+ if pendCur != nil && (curCur == nil || pendCur.fd.Num > curCur.fd.Num) {
+ curCur = pendCur
+ }
+
+ if curCur != nil {
+ // Restore CURRENT file to proper state.
+ if !fs.readOnly && (curCur.name != "CURRENT" || len(pendNames) != 0) {
+ // Ignore setMeta errors, however don't delete obsolete files if we
+ // catch error.
+ if err := fs.setMeta(curCur.fd); err == nil {
+ // Remove 'pending rename' files.
+ for _, name := range pendNames {
+ if err := os.Remove(filepath.Join(fs.path, name)); err != nil {
+ fs.log(fmt.Sprintf("remove %s: %v", name, err))
+ }
+ }
+ }
+ }
+ return curCur.fd, nil
+ }
+
+ // Nothing found.
+ if isCorrupted(pendErr) {
+ return FileDesc{}, pendErr
+ }
+ return FileDesc{}, curErr
+}
+
+func (fs *fileStorage) List(ft FileType) (fds []FileDesc, err error) {
+ fs.mu.Lock()
+ defer fs.mu.Unlock()
+ if fs.open < 0 {
+ return nil, ErrClosed
+ }
+ dir, err := os.Open(fs.path)
+ if err != nil {
+ return
+ }
+ names, err := dir.Readdirnames(0)
+ // Close the dir first before checking for Readdirnames error.
+ if cerr := dir.Close(); cerr != nil {
+ fs.log(fmt.Sprintf("close dir: %v", cerr))
+ }
+ if err == nil {
+ for _, name := range names {
+ if fd, ok := fsParseName(name); ok && fd.Type&ft != 0 {
+ fds = append(fds, fd)
+ }
+ }
+ }
+ return
+}
+
+func (fs *fileStorage) Open(fd FileDesc) (Reader, error) {
+ if !FileDescOk(fd) {
+ return nil, ErrInvalidFile
+ }
+
+ fs.mu.Lock()
+ defer fs.mu.Unlock()
+ if fs.open < 0 {
+ return nil, ErrClosed
+ }
+ of, err := os.OpenFile(filepath.Join(fs.path, fsGenName(fd)), os.O_RDONLY, 0)
+ if err != nil {
+ if fsHasOldName(fd) && os.IsNotExist(err) {
+ of, err = os.OpenFile(filepath.Join(fs.path, fsGenOldName(fd)), os.O_RDONLY, 0)
+ if err == nil {
+ goto ok
+ }
+ }
+ return nil, err
+ }
+ok:
+ fs.open++
+ return &fileWrap{File: of, fs: fs, fd: fd}, nil
+}
+
+func (fs *fileStorage) Create(fd FileDesc) (Writer, error) {
+ if !FileDescOk(fd) {
+ return nil, ErrInvalidFile
+ }
+ if fs.readOnly {
+ return nil, errReadOnly
+ }
+
+ fs.mu.Lock()
+ defer fs.mu.Unlock()
+ if fs.open < 0 {
+ return nil, ErrClosed
+ }
+ of, err := os.OpenFile(filepath.Join(fs.path, fsGenName(fd)), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0644)
+ if err != nil {
+ return nil, err
+ }
+ fs.open++
+ return &fileWrap{File: of, fs: fs, fd: fd}, nil
+}
+
+func (fs *fileStorage) Remove(fd FileDesc) error {
+ if !FileDescOk(fd) {
+ return ErrInvalidFile
+ }
+ if fs.readOnly {
+ return errReadOnly
+ }
+
+ fs.mu.Lock()
+ defer fs.mu.Unlock()
+ if fs.open < 0 {
+ return ErrClosed
+ }
+ err := os.Remove(filepath.Join(fs.path, fsGenName(fd)))
+ if err != nil {
+ if fsHasOldName(fd) && os.IsNotExist(err) {
+ if e1 := os.Remove(filepath.Join(fs.path, fsGenOldName(fd))); !os.IsNotExist(e1) {
+ fs.log(fmt.Sprintf("remove %s: %v (old name)", fd, err))
+ err = e1
+ }
+ } else {
+ fs.log(fmt.Sprintf("remove %s: %v", fd, err))
+ }
+ }
+ return err
+}
+
+func (fs *fileStorage) Rename(oldfd, newfd FileDesc) error {
+ if !FileDescOk(oldfd) || !FileDescOk(newfd) {
+ return ErrInvalidFile
+ }
+ if oldfd == newfd {
+ return nil
+ }
+ if fs.readOnly {
+ return errReadOnly
+ }
+
+ fs.mu.Lock()
+ defer fs.mu.Unlock()
+ if fs.open < 0 {
+ return ErrClosed
+ }
+ return rename(filepath.Join(fs.path, fsGenName(oldfd)), filepath.Join(fs.path, fsGenName(newfd)))
+}
+
+func (fs *fileStorage) Close() error {
+ fs.mu.Lock()
+ defer fs.mu.Unlock()
+ if fs.open < 0 {
+ return ErrClosed
+ }
+ // Clear the finalizer.
+ runtime.SetFinalizer(fs, nil)
+
+ if fs.open > 0 {
+ fs.log(fmt.Sprintf("close: warning, %d files still open", fs.open))
+ }
+ fs.open = -1
+ if fs.logw != nil {
+ fs.logw.Close()
+ }
+ return fs.flock.release()
+}
+
+type fileWrap struct {
+ *os.File
+ fs *fileStorage
+ fd FileDesc
+ closed bool
+}
+
+func (fw *fileWrap) Sync() error {
+ if err := fw.File.Sync(); err != nil {
+ return err
+ }
+ if fw.fd.Type == TypeManifest {
+ // Also sync parent directory if file type is manifest.
+ // See: https://code.google.com/p/leveldb/issues/detail?id=190.
+ if err := syncDir(fw.fs.path); err != nil {
+ fw.fs.log(fmt.Sprintf("syncDir: %v", err))
+ return err
+ }
+ }
+ return nil
+}
+
+func (fw *fileWrap) Close() error {
+ fw.fs.mu.Lock()
+ defer fw.fs.mu.Unlock()
+ if fw.closed {
+ return ErrClosed
+ }
+ fw.closed = true
+ fw.fs.open--
+ err := fw.File.Close()
+ if err != nil {
+ fw.fs.log(fmt.Sprintf("close %s: %v", fw.fd, err))
+ }
+ return err
+}
+
+func fsGenName(fd FileDesc) string {
+ switch fd.Type {
+ case TypeManifest:
+ return fmt.Sprintf("MANIFEST-%06d", fd.Num)
+ case TypeJournal:
+ return fmt.Sprintf("%06d.log", fd.Num)
+ case TypeTable:
+ return fmt.Sprintf("%06d.ldb", fd.Num)
+ case TypeTemp:
+ return fmt.Sprintf("%06d.tmp", fd.Num)
+ default:
+ panic("invalid file type")
+ }
+}
+
+func fsHasOldName(fd FileDesc) bool {
+ return fd.Type == TypeTable
+}
+
+func fsGenOldName(fd FileDesc) string {
+ switch fd.Type {
+ case TypeTable:
+ return fmt.Sprintf("%06d.sst", fd.Num)
+ }
+ return fsGenName(fd)
+}
+
+func fsParseName(name string) (fd FileDesc, ok bool) {
+ var tail string
+ _, err := fmt.Sscanf(name, "%d.%s", &fd.Num, &tail)
+ if err == nil {
+ switch tail {
+ case "log":
+ fd.Type = TypeJournal
+ case "ldb", "sst":
+ fd.Type = TypeTable
+ case "tmp":
+ fd.Type = TypeTemp
+ default:
+ return
+ }
+ return fd, true
+ }
+ n, _ := fmt.Sscanf(name, "MANIFEST-%d%s", &fd.Num, &tail)
+ if n == 1 {
+ fd.Type = TypeManifest
+ return fd, true
+ }
+ return
+}
+
+func fsParseNamePtr(name string, fd *FileDesc) bool {
+ _fd, ok := fsParseName(name)
+ if fd != nil {
+ *fd = _fd
+ }
+ return ok
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_nacl.go b/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_nacl.go
new file mode 100644
index 0000000..5545aee
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_nacl.go
@@ -0,0 +1,34 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// +build nacl
+
+package storage
+
+import (
+ "os"
+ "syscall"
+)
+
+func newFileLock(path string, readOnly bool) (fl fileLock, err error) {
+ return nil, syscall.ENOTSUP
+}
+
+func setFileLock(f *os.File, readOnly, lock bool) error {
+ return syscall.ENOTSUP
+}
+
+func rename(oldpath, newpath string) error {
+ return syscall.ENOTSUP
+}
+
+func isErrInvalid(err error) bool {
+ return false
+}
+
+func syncDir(name string) error {
+ return syscall.ENOTSUP
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_plan9.go b/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_plan9.go
new file mode 100644
index 0000000..b829798
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_plan9.go
@@ -0,0 +1,63 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package storage
+
+import (
+ "os"
+)
+
+type plan9FileLock struct {
+ f *os.File
+}
+
+func (fl *plan9FileLock) release() error {
+ return fl.f.Close()
+}
+
+func newFileLock(path string, readOnly bool) (fl fileLock, err error) {
+ var (
+ flag int
+ perm os.FileMode
+ )
+ if readOnly {
+ flag = os.O_RDONLY
+ } else {
+ flag = os.O_RDWR
+ perm = os.ModeExclusive
+ }
+ f, err := os.OpenFile(path, flag, perm)
+ if os.IsNotExist(err) {
+ f, err = os.OpenFile(path, flag|os.O_CREATE, perm|0644)
+ }
+ if err != nil {
+ return
+ }
+ fl = &plan9FileLock{f: f}
+ return
+}
+
+func rename(oldpath, newpath string) error {
+ if _, err := os.Stat(newpath); err == nil {
+ if err := os.Remove(newpath); err != nil {
+ return err
+ }
+ }
+
+ return os.Rename(oldpath, newpath)
+}
+
+func syncDir(name string) error {
+ f, err := os.Open(name)
+ if err != nil {
+ return err
+ }
+ defer f.Close()
+ if err := f.Sync(); err != nil {
+ return err
+ }
+ return nil
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_solaris.go b/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_solaris.go
new file mode 100644
index 0000000..79901ee
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_solaris.go
@@ -0,0 +1,81 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// +build solaris
+
+package storage
+
+import (
+ "os"
+ "syscall"
+)
+
+type unixFileLock struct {
+ f *os.File
+}
+
+func (fl *unixFileLock) release() error {
+ if err := setFileLock(fl.f, false, false); err != nil {
+ return err
+ }
+ return fl.f.Close()
+}
+
+func newFileLock(path string, readOnly bool) (fl fileLock, err error) {
+ var flag int
+ if readOnly {
+ flag = os.O_RDONLY
+ } else {
+ flag = os.O_RDWR
+ }
+ f, err := os.OpenFile(path, flag, 0)
+ if os.IsNotExist(err) {
+ f, err = os.OpenFile(path, flag|os.O_CREATE, 0644)
+ }
+ if err != nil {
+ return
+ }
+ err = setFileLock(f, readOnly, true)
+ if err != nil {
+ f.Close()
+ return
+ }
+ fl = &unixFileLock{f: f}
+ return
+}
+
+func setFileLock(f *os.File, readOnly, lock bool) error {
+ flock := syscall.Flock_t{
+ Type: syscall.F_UNLCK,
+ Start: 0,
+ Len: 0,
+ Whence: 1,
+ }
+ if lock {
+ if readOnly {
+ flock.Type = syscall.F_RDLCK
+ } else {
+ flock.Type = syscall.F_WRLCK
+ }
+ }
+ return syscall.FcntlFlock(f.Fd(), syscall.F_SETLK, &flock)
+}
+
+func rename(oldpath, newpath string) error {
+ return os.Rename(oldpath, newpath)
+}
+
+func syncDir(name string) error {
+ f, err := os.Open(name)
+ if err != nil {
+ return err
+ }
+ defer f.Close()
+ if err := f.Sync(); err != nil {
+ return err
+ }
+ return nil
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_unix.go b/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_unix.go
new file mode 100644
index 0000000..d75f66a
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_unix.go
@@ -0,0 +1,98 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// +build darwin dragonfly freebsd linux netbsd openbsd
+
+package storage
+
+import (
+ "os"
+ "syscall"
+)
+
+type unixFileLock struct {
+ f *os.File
+}
+
+func (fl *unixFileLock) release() error {
+ if err := setFileLock(fl.f, false, false); err != nil {
+ return err
+ }
+ return fl.f.Close()
+}
+
+func newFileLock(path string, readOnly bool) (fl fileLock, err error) {
+ var flag int
+ if readOnly {
+ flag = os.O_RDONLY
+ } else {
+ flag = os.O_RDWR
+ }
+ f, err := os.OpenFile(path, flag, 0)
+ if os.IsNotExist(err) {
+ f, err = os.OpenFile(path, flag|os.O_CREATE, 0644)
+ }
+ if err != nil {
+ return
+ }
+ err = setFileLock(f, readOnly, true)
+ if err != nil {
+ f.Close()
+ return
+ }
+ fl = &unixFileLock{f: f}
+ return
+}
+
+func setFileLock(f *os.File, readOnly, lock bool) error {
+ how := syscall.LOCK_UN
+ if lock {
+ if readOnly {
+ how = syscall.LOCK_SH
+ } else {
+ how = syscall.LOCK_EX
+ }
+ }
+ return syscall.Flock(int(f.Fd()), how|syscall.LOCK_NB)
+}
+
+func rename(oldpath, newpath string) error {
+ return os.Rename(oldpath, newpath)
+}
+
+func isErrInvalid(err error) bool {
+ if err == os.ErrInvalid {
+ return true
+ }
+ // Go < 1.8
+ if syserr, ok := err.(*os.SyscallError); ok && syserr.Err == syscall.EINVAL {
+ return true
+ }
+ // Go >= 1.8 returns *os.PathError instead
+ if patherr, ok := err.(*os.PathError); ok && patherr.Err == syscall.EINVAL {
+ return true
+ }
+ return false
+}
+
+func syncDir(name string) error {
+ // As per fsync manpage, Linux seems to expect fsync on directory, however
+ // some system don't support this, so we will ignore syscall.EINVAL.
+ //
+ // From fsync(2):
+ // Calling fsync() does not necessarily ensure that the entry in the
+ // directory containing the file has also reached disk. For that an
+ // explicit fsync() on a file descriptor for the directory is also needed.
+ f, err := os.Open(name)
+ if err != nil {
+ return err
+ }
+ defer f.Close()
+ if err := f.Sync(); err != nil && !isErrInvalid(err) {
+ return err
+ }
+ return nil
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_windows.go b/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_windows.go
new file mode 100644
index 0000000..899335f
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/storage/file_storage_windows.go
@@ -0,0 +1,78 @@
+// Copyright (c) 2013, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package storage
+
+import (
+ "syscall"
+ "unsafe"
+)
+
+var (
+ modkernel32 = syscall.NewLazyDLL("kernel32.dll")
+
+ procMoveFileExW = modkernel32.NewProc("MoveFileExW")
+)
+
+const (
+ _MOVEFILE_REPLACE_EXISTING = 1
+)
+
+type windowsFileLock struct {
+ fd syscall.Handle
+}
+
+func (fl *windowsFileLock) release() error {
+ return syscall.Close(fl.fd)
+}
+
+func newFileLock(path string, readOnly bool) (fl fileLock, err error) {
+ pathp, err := syscall.UTF16PtrFromString(path)
+ if err != nil {
+ return
+ }
+ var access, shareMode uint32
+ if readOnly {
+ access = syscall.GENERIC_READ
+ shareMode = syscall.FILE_SHARE_READ
+ } else {
+ access = syscall.GENERIC_READ | syscall.GENERIC_WRITE
+ }
+ fd, err := syscall.CreateFile(pathp, access, shareMode, nil, syscall.OPEN_EXISTING, syscall.FILE_ATTRIBUTE_NORMAL, 0)
+ if err == syscall.ERROR_FILE_NOT_FOUND {
+ fd, err = syscall.CreateFile(pathp, access, shareMode, nil, syscall.OPEN_ALWAYS, syscall.FILE_ATTRIBUTE_NORMAL, 0)
+ }
+ if err != nil {
+ return
+ }
+ fl = &windowsFileLock{fd: fd}
+ return
+}
+
+func moveFileEx(from *uint16, to *uint16, flags uint32) error {
+ r1, _, e1 := syscall.Syscall(procMoveFileExW.Addr(), 3, uintptr(unsafe.Pointer(from)), uintptr(unsafe.Pointer(to)), uintptr(flags))
+ if r1 == 0 {
+ if e1 != 0 {
+ return error(e1)
+ }
+ return syscall.EINVAL
+ }
+ return nil
+}
+
+func rename(oldpath, newpath string) error {
+ from, err := syscall.UTF16PtrFromString(oldpath)
+ if err != nil {
+ return err
+ }
+ to, err := syscall.UTF16PtrFromString(newpath)
+ if err != nil {
+ return err
+ }
+ return moveFileEx(from, to, _MOVEFILE_REPLACE_EXISTING)
+}
+
+func syncDir(name string) error { return nil }
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/storage/mem_storage.go b/vendor/github.com/syndtr/goleveldb/leveldb/storage/mem_storage.go
new file mode 100644
index 0000000..838f1be
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/storage/mem_storage.go
@@ -0,0 +1,222 @@
+// Copyright (c) 2013, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package storage
+
+import (
+ "bytes"
+ "os"
+ "sync"
+)
+
+const typeShift = 4
+
+// Verify at compile-time that typeShift is large enough to cover all FileType
+// values by confirming that 0 == 0.
+var _ [0]struct{} = [TypeAll >> typeShift]struct{}{}
+
+type memStorageLock struct {
+ ms *memStorage
+}
+
+func (lock *memStorageLock) Unlock() {
+ ms := lock.ms
+ ms.mu.Lock()
+ defer ms.mu.Unlock()
+ if ms.slock == lock {
+ ms.slock = nil
+ }
+ return
+}
+
+// memStorage is a memory-backed storage.
+type memStorage struct {
+ mu sync.Mutex
+ slock *memStorageLock
+ files map[uint64]*memFile
+ meta FileDesc
+}
+
+// NewMemStorage returns a new memory-backed storage implementation.
+func NewMemStorage() Storage {
+ return &memStorage{
+ files: make(map[uint64]*memFile),
+ }
+}
+
+func (ms *memStorage) Lock() (Locker, error) {
+ ms.mu.Lock()
+ defer ms.mu.Unlock()
+ if ms.slock != nil {
+ return nil, ErrLocked
+ }
+ ms.slock = &memStorageLock{ms: ms}
+ return ms.slock, nil
+}
+
+func (*memStorage) Log(str string) {}
+
+func (ms *memStorage) SetMeta(fd FileDesc) error {
+ if !FileDescOk(fd) {
+ return ErrInvalidFile
+ }
+
+ ms.mu.Lock()
+ ms.meta = fd
+ ms.mu.Unlock()
+ return nil
+}
+
+func (ms *memStorage) GetMeta() (FileDesc, error) {
+ ms.mu.Lock()
+ defer ms.mu.Unlock()
+ if ms.meta.Zero() {
+ return FileDesc{}, os.ErrNotExist
+ }
+ return ms.meta, nil
+}
+
+func (ms *memStorage) List(ft FileType) ([]FileDesc, error) {
+ ms.mu.Lock()
+ var fds []FileDesc
+ for x := range ms.files {
+ fd := unpackFile(x)
+ if fd.Type&ft != 0 {
+ fds = append(fds, fd)
+ }
+ }
+ ms.mu.Unlock()
+ return fds, nil
+}
+
+func (ms *memStorage) Open(fd FileDesc) (Reader, error) {
+ if !FileDescOk(fd) {
+ return nil, ErrInvalidFile
+ }
+
+ ms.mu.Lock()
+ defer ms.mu.Unlock()
+ if m, exist := ms.files[packFile(fd)]; exist {
+ if m.open {
+ return nil, errFileOpen
+ }
+ m.open = true
+ return &memReader{Reader: bytes.NewReader(m.Bytes()), ms: ms, m: m}, nil
+ }
+ return nil, os.ErrNotExist
+}
+
+func (ms *memStorage) Create(fd FileDesc) (Writer, error) {
+ if !FileDescOk(fd) {
+ return nil, ErrInvalidFile
+ }
+
+ x := packFile(fd)
+ ms.mu.Lock()
+ defer ms.mu.Unlock()
+ m, exist := ms.files[x]
+ if exist {
+ if m.open {
+ return nil, errFileOpen
+ }
+ m.Reset()
+ } else {
+ m = &memFile{}
+ ms.files[x] = m
+ }
+ m.open = true
+ return &memWriter{memFile: m, ms: ms}, nil
+}
+
+func (ms *memStorage) Remove(fd FileDesc) error {
+ if !FileDescOk(fd) {
+ return ErrInvalidFile
+ }
+
+ x := packFile(fd)
+ ms.mu.Lock()
+ defer ms.mu.Unlock()
+ if _, exist := ms.files[x]; exist {
+ delete(ms.files, x)
+ return nil
+ }
+ return os.ErrNotExist
+}
+
+func (ms *memStorage) Rename(oldfd, newfd FileDesc) error {
+ if !FileDescOk(oldfd) || !FileDescOk(newfd) {
+ return ErrInvalidFile
+ }
+ if oldfd == newfd {
+ return nil
+ }
+
+ oldx := packFile(oldfd)
+ newx := packFile(newfd)
+ ms.mu.Lock()
+ defer ms.mu.Unlock()
+ oldm, exist := ms.files[oldx]
+ if !exist {
+ return os.ErrNotExist
+ }
+ newm, exist := ms.files[newx]
+ if (exist && newm.open) || oldm.open {
+ return errFileOpen
+ }
+ delete(ms.files, oldx)
+ ms.files[newx] = oldm
+ return nil
+}
+
+func (*memStorage) Close() error { return nil }
+
+type memFile struct {
+ bytes.Buffer
+ open bool
+}
+
+type memReader struct {
+ *bytes.Reader
+ ms *memStorage
+ m *memFile
+ closed bool
+}
+
+func (mr *memReader) Close() error {
+ mr.ms.mu.Lock()
+ defer mr.ms.mu.Unlock()
+ if mr.closed {
+ return ErrClosed
+ }
+ mr.m.open = false
+ return nil
+}
+
+type memWriter struct {
+ *memFile
+ ms *memStorage
+ closed bool
+}
+
+func (*memWriter) Sync() error { return nil }
+
+func (mw *memWriter) Close() error {
+ mw.ms.mu.Lock()
+ defer mw.ms.mu.Unlock()
+ if mw.closed {
+ return ErrClosed
+ }
+ mw.memFile.open = false
+ return nil
+}
+
+func packFile(fd FileDesc) uint64 {
+ return uint64(fd.Num)<> typeShift)}
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/storage/storage.go b/vendor/github.com/syndtr/goleveldb/leveldb/storage/storage.go
new file mode 100644
index 0000000..4e4a724
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/storage/storage.go
@@ -0,0 +1,187 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Package storage provides storage abstraction for LevelDB.
+package storage
+
+import (
+ "errors"
+ "fmt"
+ "io"
+)
+
+// FileType represent a file type.
+type FileType int
+
+// File types.
+const (
+ TypeManifest FileType = 1 << iota
+ TypeJournal
+ TypeTable
+ TypeTemp
+
+ TypeAll = TypeManifest | TypeJournal | TypeTable | TypeTemp
+)
+
+func (t FileType) String() string {
+ switch t {
+ case TypeManifest:
+ return "manifest"
+ case TypeJournal:
+ return "journal"
+ case TypeTable:
+ return "table"
+ case TypeTemp:
+ return "temp"
+ }
+ return fmt.Sprintf("", t)
+}
+
+// Common error.
+var (
+ ErrInvalidFile = errors.New("leveldb/storage: invalid file for argument")
+ ErrLocked = errors.New("leveldb/storage: already locked")
+ ErrClosed = errors.New("leveldb/storage: closed")
+)
+
+// ErrCorrupted is the type that wraps errors that indicate corruption of
+// a file. Package storage has its own type instead of using
+// errors.ErrCorrupted to prevent circular import.
+type ErrCorrupted struct {
+ Fd FileDesc
+ Err error
+}
+
+func isCorrupted(err error) bool {
+ switch err.(type) {
+ case *ErrCorrupted:
+ return true
+ }
+ return false
+}
+
+func (e *ErrCorrupted) Error() string {
+ if !e.Fd.Zero() {
+ return fmt.Sprintf("%v [file=%v]", e.Err, e.Fd)
+ }
+ return e.Err.Error()
+}
+
+// Syncer is the interface that wraps basic Sync method.
+type Syncer interface {
+ // Sync commits the current contents of the file to stable storage.
+ Sync() error
+}
+
+// Reader is the interface that groups the basic Read, Seek, ReadAt and Close
+// methods.
+type Reader interface {
+ io.ReadSeeker
+ io.ReaderAt
+ io.Closer
+}
+
+// Writer is the interface that groups the basic Write, Sync and Close
+// methods.
+type Writer interface {
+ io.WriteCloser
+ Syncer
+}
+
+// Locker is the interface that wraps Unlock method.
+type Locker interface {
+ Unlock()
+}
+
+// FileDesc is a 'file descriptor'.
+type FileDesc struct {
+ Type FileType
+ Num int64
+}
+
+func (fd FileDesc) String() string {
+ switch fd.Type {
+ case TypeManifest:
+ return fmt.Sprintf("MANIFEST-%06d", fd.Num)
+ case TypeJournal:
+ return fmt.Sprintf("%06d.log", fd.Num)
+ case TypeTable:
+ return fmt.Sprintf("%06d.ldb", fd.Num)
+ case TypeTemp:
+ return fmt.Sprintf("%06d.tmp", fd.Num)
+ default:
+ return fmt.Sprintf("%#x-%d", fd.Type, fd.Num)
+ }
+}
+
+// Zero returns true if fd == (FileDesc{}).
+func (fd FileDesc) Zero() bool {
+ return fd == (FileDesc{})
+}
+
+// FileDescOk returns true if fd is a valid 'file descriptor'.
+func FileDescOk(fd FileDesc) bool {
+ switch fd.Type {
+ case TypeManifest:
+ case TypeJournal:
+ case TypeTable:
+ case TypeTemp:
+ default:
+ return false
+ }
+ return fd.Num >= 0
+}
+
+// Storage is the storage. A storage instance must be safe for concurrent use.
+type Storage interface {
+ // Lock locks the storage. Any subsequent attempt to call Lock will fail
+ // until the last lock released.
+ // Caller should call Unlock method after use.
+ Lock() (Locker, error)
+
+ // Log logs a string. This is used for logging.
+ // An implementation may write to a file, stdout or simply do nothing.
+ Log(str string)
+
+ // SetMeta store 'file descriptor' that can later be acquired using GetMeta
+ // method. The 'file descriptor' should point to a valid file.
+ // SetMeta should be implemented in such way that changes should happen
+ // atomically.
+ SetMeta(fd FileDesc) error
+
+ // GetMeta returns 'file descriptor' stored in meta. The 'file descriptor'
+ // can be updated using SetMeta method.
+ // Returns os.ErrNotExist if meta doesn't store any 'file descriptor', or
+ // 'file descriptor' point to nonexistent file.
+ GetMeta() (FileDesc, error)
+
+ // List returns file descriptors that match the given file types.
+ // The file types may be OR'ed together.
+ List(ft FileType) ([]FileDesc, error)
+
+ // Open opens file with the given 'file descriptor' read-only.
+ // Returns os.ErrNotExist error if the file does not exist.
+ // Returns ErrClosed if the underlying storage is closed.
+ Open(fd FileDesc) (Reader, error)
+
+ // Create creates file with the given 'file descriptor', truncate if already
+ // exist and opens write-only.
+ // Returns ErrClosed if the underlying storage is closed.
+ Create(fd FileDesc) (Writer, error)
+
+ // Remove removes file with the given 'file descriptor'.
+ // Returns ErrClosed if the underlying storage is closed.
+ Remove(fd FileDesc) error
+
+ // Rename renames file from oldfd to newfd.
+ // Returns ErrClosed if the underlying storage is closed.
+ Rename(oldfd, newfd FileDesc) error
+
+ // Close closes the storage.
+ // It is valid to call Close multiple times. Other methods should not be
+ // called after the storage has been closed.
+ Close() error
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/table.go b/vendor/github.com/syndtr/goleveldb/leveldb/table.go
new file mode 100644
index 0000000..1fac60d
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/table.go
@@ -0,0 +1,531 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "fmt"
+ "sort"
+ "sync/atomic"
+
+ "github.com/syndtr/goleveldb/leveldb/cache"
+ "github.com/syndtr/goleveldb/leveldb/iterator"
+ "github.com/syndtr/goleveldb/leveldb/opt"
+ "github.com/syndtr/goleveldb/leveldb/storage"
+ "github.com/syndtr/goleveldb/leveldb/table"
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+// tFile holds basic information about a table.
+type tFile struct {
+ fd storage.FileDesc
+ seekLeft int32
+ size int64
+ imin, imax internalKey
+}
+
+// Returns true if given key is after largest key of this table.
+func (t *tFile) after(icmp *iComparer, ukey []byte) bool {
+ return ukey != nil && icmp.uCompare(ukey, t.imax.ukey()) > 0
+}
+
+// Returns true if given key is before smallest key of this table.
+func (t *tFile) before(icmp *iComparer, ukey []byte) bool {
+ return ukey != nil && icmp.uCompare(ukey, t.imin.ukey()) < 0
+}
+
+// Returns true if given key range overlaps with this table key range.
+func (t *tFile) overlaps(icmp *iComparer, umin, umax []byte) bool {
+ return !t.after(icmp, umin) && !t.before(icmp, umax)
+}
+
+// Cosumes one seek and return current seeks left.
+func (t *tFile) consumeSeek() int32 {
+ return atomic.AddInt32(&t.seekLeft, -1)
+}
+
+// Creates new tFile.
+func newTableFile(fd storage.FileDesc, size int64, imin, imax internalKey) *tFile {
+ f := &tFile{
+ fd: fd,
+ size: size,
+ imin: imin,
+ imax: imax,
+ }
+
+ // We arrange to automatically compact this file after
+ // a certain number of seeks. Let's assume:
+ // (1) One seek costs 10ms
+ // (2) Writing or reading 1MB costs 10ms (100MB/s)
+ // (3) A compaction of 1MB does 25MB of IO:
+ // 1MB read from this level
+ // 10-12MB read from next level (boundaries may be misaligned)
+ // 10-12MB written to next level
+ // This implies that 25 seeks cost the same as the compaction
+ // of 1MB of data. I.e., one seek costs approximately the
+ // same as the compaction of 40KB of data. We are a little
+ // conservative and allow approximately one seek for every 16KB
+ // of data before triggering a compaction.
+ f.seekLeft = int32(size / 16384)
+ if f.seekLeft < 100 {
+ f.seekLeft = 100
+ }
+
+ return f
+}
+
+func tableFileFromRecord(r atRecord) *tFile {
+ return newTableFile(storage.FileDesc{Type: storage.TypeTable, Num: r.num}, r.size, r.imin, r.imax)
+}
+
+// tFiles hold multiple tFile.
+type tFiles []*tFile
+
+func (tf tFiles) Len() int { return len(tf) }
+func (tf tFiles) Swap(i, j int) { tf[i], tf[j] = tf[j], tf[i] }
+
+func (tf tFiles) nums() string {
+ x := "[ "
+ for i, f := range tf {
+ if i != 0 {
+ x += ", "
+ }
+ x += fmt.Sprint(f.fd.Num)
+ }
+ x += " ]"
+ return x
+}
+
+// Returns true if i smallest key is less than j.
+// This used for sort by key in ascending order.
+func (tf tFiles) lessByKey(icmp *iComparer, i, j int) bool {
+ a, b := tf[i], tf[j]
+ n := icmp.Compare(a.imin, b.imin)
+ if n == 0 {
+ return a.fd.Num < b.fd.Num
+ }
+ return n < 0
+}
+
+// Returns true if i file number is greater than j.
+// This used for sort by file number in descending order.
+func (tf tFiles) lessByNum(i, j int) bool {
+ return tf[i].fd.Num > tf[j].fd.Num
+}
+
+// Sorts tables by key in ascending order.
+func (tf tFiles) sortByKey(icmp *iComparer) {
+ sort.Sort(&tFilesSortByKey{tFiles: tf, icmp: icmp})
+}
+
+// Sorts tables by file number in descending order.
+func (tf tFiles) sortByNum() {
+ sort.Sort(&tFilesSortByNum{tFiles: tf})
+}
+
+// Returns sum of all tables size.
+func (tf tFiles) size() (sum int64) {
+ for _, t := range tf {
+ sum += t.size
+ }
+ return sum
+}
+
+// Searches smallest index of tables whose its smallest
+// key is after or equal with given key.
+func (tf tFiles) searchMin(icmp *iComparer, ikey internalKey) int {
+ return sort.Search(len(tf), func(i int) bool {
+ return icmp.Compare(tf[i].imin, ikey) >= 0
+ })
+}
+
+// Searches smallest index of tables whose its largest
+// key is after or equal with given key.
+func (tf tFiles) searchMax(icmp *iComparer, ikey internalKey) int {
+ return sort.Search(len(tf), func(i int) bool {
+ return icmp.Compare(tf[i].imax, ikey) >= 0
+ })
+}
+
+// Returns true if given key range overlaps with one or more
+// tables key range. If unsorted is true then binary search will not be used.
+func (tf tFiles) overlaps(icmp *iComparer, umin, umax []byte, unsorted bool) bool {
+ if unsorted {
+ // Check against all files.
+ for _, t := range tf {
+ if t.overlaps(icmp, umin, umax) {
+ return true
+ }
+ }
+ return false
+ }
+
+ i := 0
+ if len(umin) > 0 {
+ // Find the earliest possible internal key for min.
+ i = tf.searchMax(icmp, makeInternalKey(nil, umin, keyMaxSeq, keyTypeSeek))
+ }
+ if i >= len(tf) {
+ // Beginning of range is after all files, so no overlap.
+ return false
+ }
+ return !tf[i].before(icmp, umax)
+}
+
+// Returns tables whose its key range overlaps with given key range.
+// Range will be expanded if ukey found hop across tables.
+// If overlapped is true then the search will be restarted if umax
+// expanded.
+// The dst content will be overwritten.
+func (tf tFiles) getOverlaps(dst tFiles, icmp *iComparer, umin, umax []byte, overlapped bool) tFiles {
+ dst = dst[:0]
+ for i := 0; i < len(tf); {
+ t := tf[i]
+ if t.overlaps(icmp, umin, umax) {
+ if umin != nil && icmp.uCompare(t.imin.ukey(), umin) < 0 {
+ umin = t.imin.ukey()
+ dst = dst[:0]
+ i = 0
+ continue
+ } else if umax != nil && icmp.uCompare(t.imax.ukey(), umax) > 0 {
+ umax = t.imax.ukey()
+ // Restart search if it is overlapped.
+ if overlapped {
+ dst = dst[:0]
+ i = 0
+ continue
+ }
+ }
+
+ dst = append(dst, t)
+ }
+ i++
+ }
+
+ return dst
+}
+
+// Returns tables key range.
+func (tf tFiles) getRange(icmp *iComparer) (imin, imax internalKey) {
+ for i, t := range tf {
+ if i == 0 {
+ imin, imax = t.imin, t.imax
+ continue
+ }
+ if icmp.Compare(t.imin, imin) < 0 {
+ imin = t.imin
+ }
+ if icmp.Compare(t.imax, imax) > 0 {
+ imax = t.imax
+ }
+ }
+
+ return
+}
+
+// Creates iterator index from tables.
+func (tf tFiles) newIndexIterator(tops *tOps, icmp *iComparer, slice *util.Range, ro *opt.ReadOptions) iterator.IteratorIndexer {
+ if slice != nil {
+ var start, limit int
+ if slice.Start != nil {
+ start = tf.searchMax(icmp, internalKey(slice.Start))
+ }
+ if slice.Limit != nil {
+ limit = tf.searchMin(icmp, internalKey(slice.Limit))
+ } else {
+ limit = tf.Len()
+ }
+ tf = tf[start:limit]
+ }
+ return iterator.NewArrayIndexer(&tFilesArrayIndexer{
+ tFiles: tf,
+ tops: tops,
+ icmp: icmp,
+ slice: slice,
+ ro: ro,
+ })
+}
+
+// Tables iterator index.
+type tFilesArrayIndexer struct {
+ tFiles
+ tops *tOps
+ icmp *iComparer
+ slice *util.Range
+ ro *opt.ReadOptions
+}
+
+func (a *tFilesArrayIndexer) Search(key []byte) int {
+ return a.searchMax(a.icmp, internalKey(key))
+}
+
+func (a *tFilesArrayIndexer) Get(i int) iterator.Iterator {
+ if i == 0 || i == a.Len()-1 {
+ return a.tops.newIterator(a.tFiles[i], a.slice, a.ro)
+ }
+ return a.tops.newIterator(a.tFiles[i], nil, a.ro)
+}
+
+// Helper type for sortByKey.
+type tFilesSortByKey struct {
+ tFiles
+ icmp *iComparer
+}
+
+func (x *tFilesSortByKey) Less(i, j int) bool {
+ return x.lessByKey(x.icmp, i, j)
+}
+
+// Helper type for sortByNum.
+type tFilesSortByNum struct {
+ tFiles
+}
+
+func (x *tFilesSortByNum) Less(i, j int) bool {
+ return x.lessByNum(i, j)
+}
+
+// Table operations.
+type tOps struct {
+ s *session
+ noSync bool
+ evictRemoved bool
+ cache *cache.Cache
+ bcache *cache.Cache
+ bpool *util.BufferPool
+}
+
+// Creates an empty table and returns table writer.
+func (t *tOps) create() (*tWriter, error) {
+ fd := storage.FileDesc{Type: storage.TypeTable, Num: t.s.allocFileNum()}
+ fw, err := t.s.stor.Create(fd)
+ if err != nil {
+ return nil, err
+ }
+ return &tWriter{
+ t: t,
+ fd: fd,
+ w: fw,
+ tw: table.NewWriter(fw, t.s.o.Options),
+ }, nil
+}
+
+// Builds table from src iterator.
+func (t *tOps) createFrom(src iterator.Iterator) (f *tFile, n int, err error) {
+ w, err := t.create()
+ if err != nil {
+ return
+ }
+
+ defer func() {
+ if err != nil {
+ w.drop()
+ }
+ }()
+
+ for src.Next() {
+ err = w.append(src.Key(), src.Value())
+ if err != nil {
+ return
+ }
+ }
+ err = src.Error()
+ if err != nil {
+ return
+ }
+
+ n = w.tw.EntriesLen()
+ f, err = w.finish()
+ return
+}
+
+// Opens table. It returns a cache handle, which should
+// be released after use.
+func (t *tOps) open(f *tFile) (ch *cache.Handle, err error) {
+ ch = t.cache.Get(0, uint64(f.fd.Num), func() (size int, value cache.Value) {
+ var r storage.Reader
+ r, err = t.s.stor.Open(f.fd)
+ if err != nil {
+ return 0, nil
+ }
+
+ var bcache *cache.NamespaceGetter
+ if t.bcache != nil {
+ bcache = &cache.NamespaceGetter{Cache: t.bcache, NS: uint64(f.fd.Num)}
+ }
+
+ var tr *table.Reader
+ tr, err = table.NewReader(r, f.size, f.fd, bcache, t.bpool, t.s.o.Options)
+ if err != nil {
+ r.Close()
+ return 0, nil
+ }
+ return 1, tr
+
+ })
+ if ch == nil && err == nil {
+ err = ErrClosed
+ }
+ return
+}
+
+// Finds key/value pair whose key is greater than or equal to the
+// given key.
+func (t *tOps) find(f *tFile, key []byte, ro *opt.ReadOptions) (rkey, rvalue []byte, err error) {
+ ch, err := t.open(f)
+ if err != nil {
+ return nil, nil, err
+ }
+ defer ch.Release()
+ return ch.Value().(*table.Reader).Find(key, true, ro)
+}
+
+// Finds key that is greater than or equal to the given key.
+func (t *tOps) findKey(f *tFile, key []byte, ro *opt.ReadOptions) (rkey []byte, err error) {
+ ch, err := t.open(f)
+ if err != nil {
+ return nil, err
+ }
+ defer ch.Release()
+ return ch.Value().(*table.Reader).FindKey(key, true, ro)
+}
+
+// Returns approximate offset of the given key.
+func (t *tOps) offsetOf(f *tFile, key []byte) (offset int64, err error) {
+ ch, err := t.open(f)
+ if err != nil {
+ return
+ }
+ defer ch.Release()
+ return ch.Value().(*table.Reader).OffsetOf(key)
+}
+
+// Creates an iterator from the given table.
+func (t *tOps) newIterator(f *tFile, slice *util.Range, ro *opt.ReadOptions) iterator.Iterator {
+ ch, err := t.open(f)
+ if err != nil {
+ return iterator.NewEmptyIterator(err)
+ }
+ iter := ch.Value().(*table.Reader).NewIterator(slice, ro)
+ iter.SetReleaser(ch)
+ return iter
+}
+
+// Removes table from persistent storage. It waits until
+// no one use the the table.
+func (t *tOps) remove(f *tFile) {
+ t.cache.Delete(0, uint64(f.fd.Num), func() {
+ if err := t.s.stor.Remove(f.fd); err != nil {
+ t.s.logf("table@remove removing @%d %q", f.fd.Num, err)
+ } else {
+ t.s.logf("table@remove removed @%d", f.fd.Num)
+ }
+ if t.evictRemoved && t.bcache != nil {
+ t.bcache.EvictNS(uint64(f.fd.Num))
+ }
+ })
+}
+
+// Closes the table ops instance. It will close all tables,
+// regadless still used or not.
+func (t *tOps) close() {
+ t.bpool.Close()
+ t.cache.Close()
+ if t.bcache != nil {
+ t.bcache.CloseWeak()
+ }
+}
+
+// Creates new initialized table ops instance.
+func newTableOps(s *session) *tOps {
+ var (
+ cacher cache.Cacher
+ bcache *cache.Cache
+ bpool *util.BufferPool
+ )
+ if s.o.GetOpenFilesCacheCapacity() > 0 {
+ cacher = cache.NewLRU(s.o.GetOpenFilesCacheCapacity())
+ }
+ if !s.o.GetDisableBlockCache() {
+ var bcacher cache.Cacher
+ if s.o.GetBlockCacheCapacity() > 0 {
+ bcacher = s.o.GetBlockCacher().New(s.o.GetBlockCacheCapacity())
+ }
+ bcache = cache.NewCache(bcacher)
+ }
+ if !s.o.GetDisableBufferPool() {
+ bpool = util.NewBufferPool(s.o.GetBlockSize() + 5)
+ }
+ return &tOps{
+ s: s,
+ noSync: s.o.GetNoSync(),
+ evictRemoved: s.o.GetBlockCacheEvictRemoved(),
+ cache: cache.NewCache(cacher),
+ bcache: bcache,
+ bpool: bpool,
+ }
+}
+
+// tWriter wraps the table writer. It keep track of file descriptor
+// and added key range.
+type tWriter struct {
+ t *tOps
+
+ fd storage.FileDesc
+ w storage.Writer
+ tw *table.Writer
+
+ first, last []byte
+}
+
+// Append key/value pair to the table.
+func (w *tWriter) append(key, value []byte) error {
+ if w.first == nil {
+ w.first = append([]byte{}, key...)
+ }
+ w.last = append(w.last[:0], key...)
+ return w.tw.Append(key, value)
+}
+
+// Returns true if the table is empty.
+func (w *tWriter) empty() bool {
+ return w.first == nil
+}
+
+// Closes the storage.Writer.
+func (w *tWriter) close() {
+ if w.w != nil {
+ w.w.Close()
+ w.w = nil
+ }
+}
+
+// Finalizes the table and returns table file.
+func (w *tWriter) finish() (f *tFile, err error) {
+ defer w.close()
+ err = w.tw.Close()
+ if err != nil {
+ return
+ }
+ if !w.t.noSync {
+ err = w.w.Sync()
+ if err != nil {
+ return
+ }
+ }
+ f = newTableFile(w.fd, int64(w.tw.BytesLen()), internalKey(w.first), internalKey(w.last))
+ return
+}
+
+// Drops the table.
+func (w *tWriter) drop() {
+ w.close()
+ w.t.s.stor.Remove(w.fd)
+ w.t.s.reuseFileNum(w.fd.Num)
+ w.tw = nil
+ w.first = nil
+ w.last = nil
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/table/reader.go b/vendor/github.com/syndtr/goleveldb/leveldb/table/reader.go
new file mode 100644
index 0000000..496feb6
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/table/reader.go
@@ -0,0 +1,1139 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package table
+
+import (
+ "encoding/binary"
+ "fmt"
+ "io"
+ "sort"
+ "strings"
+ "sync"
+
+ "github.com/golang/snappy"
+
+ "github.com/syndtr/goleveldb/leveldb/cache"
+ "github.com/syndtr/goleveldb/leveldb/comparer"
+ "github.com/syndtr/goleveldb/leveldb/errors"
+ "github.com/syndtr/goleveldb/leveldb/filter"
+ "github.com/syndtr/goleveldb/leveldb/iterator"
+ "github.com/syndtr/goleveldb/leveldb/opt"
+ "github.com/syndtr/goleveldb/leveldb/storage"
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+// Reader errors.
+var (
+ ErrNotFound = errors.ErrNotFound
+ ErrReaderReleased = errors.New("leveldb/table: reader released")
+ ErrIterReleased = errors.New("leveldb/table: iterator released")
+)
+
+// ErrCorrupted describes error due to corruption. This error will be wrapped
+// with errors.ErrCorrupted.
+type ErrCorrupted struct {
+ Pos int64
+ Size int64
+ Kind string
+ Reason string
+}
+
+func (e *ErrCorrupted) Error() string {
+ return fmt.Sprintf("leveldb/table: corruption on %s (pos=%d): %s", e.Kind, e.Pos, e.Reason)
+}
+
+func max(x, y int) int {
+ if x > y {
+ return x
+ }
+ return y
+}
+
+type block struct {
+ bpool *util.BufferPool
+ bh blockHandle
+ data []byte
+ restartsLen int
+ restartsOffset int
+}
+
+func (b *block) seek(cmp comparer.Comparer, rstart, rlimit int, key []byte) (index, offset int, err error) {
+ index = sort.Search(b.restartsLen-rstart-(b.restartsLen-rlimit), func(i int) bool {
+ offset := int(binary.LittleEndian.Uint32(b.data[b.restartsOffset+4*(rstart+i):]))
+ offset++ // shared always zero, since this is a restart point
+ v1, n1 := binary.Uvarint(b.data[offset:]) // key length
+ _, n2 := binary.Uvarint(b.data[offset+n1:]) // value length
+ m := offset + n1 + n2
+ return cmp.Compare(b.data[m:m+int(v1)], key) > 0
+ }) + rstart - 1
+ if index < rstart {
+ // The smallest key is greater-than key sought.
+ index = rstart
+ }
+ offset = int(binary.LittleEndian.Uint32(b.data[b.restartsOffset+4*index:]))
+ return
+}
+
+func (b *block) restartIndex(rstart, rlimit, offset int) int {
+ return sort.Search(b.restartsLen-rstart-(b.restartsLen-rlimit), func(i int) bool {
+ return int(binary.LittleEndian.Uint32(b.data[b.restartsOffset+4*(rstart+i):])) > offset
+ }) + rstart - 1
+}
+
+func (b *block) restartOffset(index int) int {
+ return int(binary.LittleEndian.Uint32(b.data[b.restartsOffset+4*index:]))
+}
+
+func (b *block) entry(offset int) (key, value []byte, nShared, n int, err error) {
+ if offset >= b.restartsOffset {
+ if offset != b.restartsOffset {
+ err = &ErrCorrupted{Reason: "entries offset not aligned"}
+ }
+ return
+ }
+ v0, n0 := binary.Uvarint(b.data[offset:]) // Shared prefix length
+ v1, n1 := binary.Uvarint(b.data[offset+n0:]) // Key length
+ v2, n2 := binary.Uvarint(b.data[offset+n0+n1:]) // Value length
+ m := n0 + n1 + n2
+ n = m + int(v1) + int(v2)
+ if n0 <= 0 || n1 <= 0 || n2 <= 0 || offset+n > b.restartsOffset {
+ err = &ErrCorrupted{Reason: "entries corrupted"}
+ return
+ }
+ key = b.data[offset+m : offset+m+int(v1)]
+ value = b.data[offset+m+int(v1) : offset+n]
+ nShared = int(v0)
+ return
+}
+
+func (b *block) Release() {
+ b.bpool.Put(b.data)
+ b.bpool = nil
+ b.data = nil
+}
+
+type dir int
+
+const (
+ dirReleased dir = iota - 1
+ dirSOI
+ dirEOI
+ dirBackward
+ dirForward
+)
+
+type blockIter struct {
+ tr *Reader
+ block *block
+ blockReleaser util.Releaser
+ releaser util.Releaser
+ key, value []byte
+ offset int
+ // Previous offset, only filled by Next.
+ prevOffset int
+ prevNode []int
+ prevKeys []byte
+ restartIndex int
+ // Iterator direction.
+ dir dir
+ // Restart index slice range.
+ riStart int
+ riLimit int
+ // Offset slice range.
+ offsetStart int
+ offsetRealStart int
+ offsetLimit int
+ // Error.
+ err error
+}
+
+func (i *blockIter) sErr(err error) {
+ i.err = err
+ i.key = nil
+ i.value = nil
+ i.prevNode = nil
+ i.prevKeys = nil
+}
+
+func (i *blockIter) reset() {
+ if i.dir == dirBackward {
+ i.prevNode = i.prevNode[:0]
+ i.prevKeys = i.prevKeys[:0]
+ }
+ i.restartIndex = i.riStart
+ i.offset = i.offsetStart
+ i.dir = dirSOI
+ i.key = i.key[:0]
+ i.value = nil
+}
+
+func (i *blockIter) isFirst() bool {
+ switch i.dir {
+ case dirForward:
+ return i.prevOffset == i.offsetRealStart
+ case dirBackward:
+ return len(i.prevNode) == 1 && i.restartIndex == i.riStart
+ }
+ return false
+}
+
+func (i *blockIter) isLast() bool {
+ switch i.dir {
+ case dirForward, dirBackward:
+ return i.offset == i.offsetLimit
+ }
+ return false
+}
+
+func (i *blockIter) First() bool {
+ if i.err != nil {
+ return false
+ } else if i.dir == dirReleased {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ if i.dir == dirBackward {
+ i.prevNode = i.prevNode[:0]
+ i.prevKeys = i.prevKeys[:0]
+ }
+ i.dir = dirSOI
+ return i.Next()
+}
+
+func (i *blockIter) Last() bool {
+ if i.err != nil {
+ return false
+ } else if i.dir == dirReleased {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ if i.dir == dirBackward {
+ i.prevNode = i.prevNode[:0]
+ i.prevKeys = i.prevKeys[:0]
+ }
+ i.dir = dirEOI
+ return i.Prev()
+}
+
+func (i *blockIter) Seek(key []byte) bool {
+ if i.err != nil {
+ return false
+ } else if i.dir == dirReleased {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ ri, offset, err := i.block.seek(i.tr.cmp, i.riStart, i.riLimit, key)
+ if err != nil {
+ i.sErr(err)
+ return false
+ }
+ i.restartIndex = ri
+ i.offset = max(i.offsetStart, offset)
+ if i.dir == dirSOI || i.dir == dirEOI {
+ i.dir = dirForward
+ }
+ for i.Next() {
+ if i.tr.cmp.Compare(i.key, key) >= 0 {
+ return true
+ }
+ }
+ return false
+}
+
+func (i *blockIter) Next() bool {
+ if i.dir == dirEOI || i.err != nil {
+ return false
+ } else if i.dir == dirReleased {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ if i.dir == dirSOI {
+ i.restartIndex = i.riStart
+ i.offset = i.offsetStart
+ } else if i.dir == dirBackward {
+ i.prevNode = i.prevNode[:0]
+ i.prevKeys = i.prevKeys[:0]
+ }
+ for i.offset < i.offsetRealStart {
+ key, value, nShared, n, err := i.block.entry(i.offset)
+ if err != nil {
+ i.sErr(i.tr.fixErrCorruptedBH(i.block.bh, err))
+ return false
+ }
+ if n == 0 {
+ i.dir = dirEOI
+ return false
+ }
+ i.key = append(i.key[:nShared], key...)
+ i.value = value
+ i.offset += n
+ }
+ if i.offset >= i.offsetLimit {
+ i.dir = dirEOI
+ if i.offset != i.offsetLimit {
+ i.sErr(i.tr.newErrCorruptedBH(i.block.bh, "entries offset not aligned"))
+ }
+ return false
+ }
+ key, value, nShared, n, err := i.block.entry(i.offset)
+ if err != nil {
+ i.sErr(i.tr.fixErrCorruptedBH(i.block.bh, err))
+ return false
+ }
+ if n == 0 {
+ i.dir = dirEOI
+ return false
+ }
+ i.key = append(i.key[:nShared], key...)
+ i.value = value
+ i.prevOffset = i.offset
+ i.offset += n
+ i.dir = dirForward
+ return true
+}
+
+func (i *blockIter) Prev() bool {
+ if i.dir == dirSOI || i.err != nil {
+ return false
+ } else if i.dir == dirReleased {
+ i.err = ErrIterReleased
+ return false
+ }
+
+ var ri int
+ if i.dir == dirForward {
+ // Change direction.
+ i.offset = i.prevOffset
+ if i.offset == i.offsetRealStart {
+ i.dir = dirSOI
+ return false
+ }
+ ri = i.block.restartIndex(i.restartIndex, i.riLimit, i.offset)
+ i.dir = dirBackward
+ } else if i.dir == dirEOI {
+ // At the end of iterator.
+ i.restartIndex = i.riLimit
+ i.offset = i.offsetLimit
+ if i.offset == i.offsetRealStart {
+ i.dir = dirSOI
+ return false
+ }
+ ri = i.riLimit - 1
+ i.dir = dirBackward
+ } else if len(i.prevNode) == 1 {
+ // This is the end of a restart range.
+ i.offset = i.prevNode[0]
+ i.prevNode = i.prevNode[:0]
+ if i.restartIndex == i.riStart {
+ i.dir = dirSOI
+ return false
+ }
+ i.restartIndex--
+ ri = i.restartIndex
+ } else {
+ // In the middle of restart range, get from cache.
+ n := len(i.prevNode) - 3
+ node := i.prevNode[n:]
+ i.prevNode = i.prevNode[:n]
+ // Get the key.
+ ko := node[0]
+ i.key = append(i.key[:0], i.prevKeys[ko:]...)
+ i.prevKeys = i.prevKeys[:ko]
+ // Get the value.
+ vo := node[1]
+ vl := vo + node[2]
+ i.value = i.block.data[vo:vl]
+ i.offset = vl
+ return true
+ }
+ // Build entries cache.
+ i.key = i.key[:0]
+ i.value = nil
+ offset := i.block.restartOffset(ri)
+ if offset == i.offset {
+ ri--
+ if ri < 0 {
+ i.dir = dirSOI
+ return false
+ }
+ offset = i.block.restartOffset(ri)
+ }
+ i.prevNode = append(i.prevNode, offset)
+ for {
+ key, value, nShared, n, err := i.block.entry(offset)
+ if err != nil {
+ i.sErr(i.tr.fixErrCorruptedBH(i.block.bh, err))
+ return false
+ }
+ if offset >= i.offsetRealStart {
+ if i.value != nil {
+ // Appends 3 variables:
+ // 1. Previous keys offset
+ // 2. Value offset in the data block
+ // 3. Value length
+ i.prevNode = append(i.prevNode, len(i.prevKeys), offset-len(i.value), len(i.value))
+ i.prevKeys = append(i.prevKeys, i.key...)
+ }
+ i.value = value
+ }
+ i.key = append(i.key[:nShared], key...)
+ offset += n
+ // Stop if target offset reached.
+ if offset >= i.offset {
+ if offset != i.offset {
+ i.sErr(i.tr.newErrCorruptedBH(i.block.bh, "entries offset not aligned"))
+ return false
+ }
+
+ break
+ }
+ }
+ i.restartIndex = ri
+ i.offset = offset
+ return true
+}
+
+func (i *blockIter) Key() []byte {
+ if i.err != nil || i.dir <= dirEOI {
+ return nil
+ }
+ return i.key
+}
+
+func (i *blockIter) Value() []byte {
+ if i.err != nil || i.dir <= dirEOI {
+ return nil
+ }
+ return i.value
+}
+
+func (i *blockIter) Release() {
+ if i.dir != dirReleased {
+ i.tr = nil
+ i.block = nil
+ i.prevNode = nil
+ i.prevKeys = nil
+ i.key = nil
+ i.value = nil
+ i.dir = dirReleased
+ if i.blockReleaser != nil {
+ i.blockReleaser.Release()
+ i.blockReleaser = nil
+ }
+ if i.releaser != nil {
+ i.releaser.Release()
+ i.releaser = nil
+ }
+ }
+}
+
+func (i *blockIter) SetReleaser(releaser util.Releaser) {
+ if i.dir == dirReleased {
+ panic(util.ErrReleased)
+ }
+ if i.releaser != nil && releaser != nil {
+ panic(util.ErrHasReleaser)
+ }
+ i.releaser = releaser
+}
+
+func (i *blockIter) Valid() bool {
+ return i.err == nil && (i.dir == dirBackward || i.dir == dirForward)
+}
+
+func (i *blockIter) Error() error {
+ return i.err
+}
+
+type filterBlock struct {
+ bpool *util.BufferPool
+ data []byte
+ oOffset int
+ baseLg uint
+ filtersNum int
+}
+
+func (b *filterBlock) contains(filter filter.Filter, offset uint64, key []byte) bool {
+ i := int(offset >> b.baseLg)
+ if i < b.filtersNum {
+ o := b.data[b.oOffset+i*4:]
+ n := int(binary.LittleEndian.Uint32(o))
+ m := int(binary.LittleEndian.Uint32(o[4:]))
+ if n < m && m <= b.oOffset {
+ return filter.Contains(b.data[n:m], key)
+ } else if n == m {
+ return false
+ }
+ }
+ return true
+}
+
+func (b *filterBlock) Release() {
+ b.bpool.Put(b.data)
+ b.bpool = nil
+ b.data = nil
+}
+
+type indexIter struct {
+ *blockIter
+ tr *Reader
+ slice *util.Range
+ // Options
+ fillCache bool
+}
+
+func (i *indexIter) Get() iterator.Iterator {
+ value := i.Value()
+ if value == nil {
+ return nil
+ }
+ dataBH, n := decodeBlockHandle(value)
+ if n == 0 {
+ return iterator.NewEmptyIterator(i.tr.newErrCorruptedBH(i.tr.indexBH, "bad data block handle"))
+ }
+
+ var slice *util.Range
+ if i.slice != nil && (i.blockIter.isFirst() || i.blockIter.isLast()) {
+ slice = i.slice
+ }
+ return i.tr.getDataIterErr(dataBH, slice, i.tr.verifyChecksum, i.fillCache)
+}
+
+// Reader is a table reader.
+type Reader struct {
+ mu sync.RWMutex
+ fd storage.FileDesc
+ reader io.ReaderAt
+ cache *cache.NamespaceGetter
+ err error
+ bpool *util.BufferPool
+ // Options
+ o *opt.Options
+ cmp comparer.Comparer
+ filter filter.Filter
+ verifyChecksum bool
+
+ dataEnd int64
+ metaBH, indexBH, filterBH blockHandle
+ indexBlock *block
+ filterBlock *filterBlock
+}
+
+func (r *Reader) blockKind(bh blockHandle) string {
+ switch bh.offset {
+ case r.metaBH.offset:
+ return "meta-block"
+ case r.indexBH.offset:
+ return "index-block"
+ case r.filterBH.offset:
+ if r.filterBH.length > 0 {
+ return "filter-block"
+ }
+ }
+ return "data-block"
+}
+
+func (r *Reader) newErrCorrupted(pos, size int64, kind, reason string) error {
+ return &errors.ErrCorrupted{Fd: r.fd, Err: &ErrCorrupted{Pos: pos, Size: size, Kind: kind, Reason: reason}}
+}
+
+func (r *Reader) newErrCorruptedBH(bh blockHandle, reason string) error {
+ return r.newErrCorrupted(int64(bh.offset), int64(bh.length), r.blockKind(bh), reason)
+}
+
+func (r *Reader) fixErrCorruptedBH(bh blockHandle, err error) error {
+ if cerr, ok := err.(*ErrCorrupted); ok {
+ cerr.Pos = int64(bh.offset)
+ cerr.Size = int64(bh.length)
+ cerr.Kind = r.blockKind(bh)
+ return &errors.ErrCorrupted{Fd: r.fd, Err: cerr}
+ }
+ return err
+}
+
+func (r *Reader) readRawBlock(bh blockHandle, verifyChecksum bool) ([]byte, error) {
+ data := r.bpool.Get(int(bh.length + blockTrailerLen))
+ if _, err := r.reader.ReadAt(data, int64(bh.offset)); err != nil && err != io.EOF {
+ return nil, err
+ }
+
+ if verifyChecksum {
+ n := bh.length + 1
+ checksum0 := binary.LittleEndian.Uint32(data[n:])
+ checksum1 := util.NewCRC(data[:n]).Value()
+ if checksum0 != checksum1 {
+ r.bpool.Put(data)
+ return nil, r.newErrCorruptedBH(bh, fmt.Sprintf("checksum mismatch, want=%#x got=%#x", checksum0, checksum1))
+ }
+ }
+
+ switch data[bh.length] {
+ case blockTypeNoCompression:
+ data = data[:bh.length]
+ case blockTypeSnappyCompression:
+ decLen, err := snappy.DecodedLen(data[:bh.length])
+ if err != nil {
+ r.bpool.Put(data)
+ return nil, r.newErrCorruptedBH(bh, err.Error())
+ }
+ decData := r.bpool.Get(decLen)
+ decData, err = snappy.Decode(decData, data[:bh.length])
+ r.bpool.Put(data)
+ if err != nil {
+ r.bpool.Put(decData)
+ return nil, r.newErrCorruptedBH(bh, err.Error())
+ }
+ data = decData
+ default:
+ r.bpool.Put(data)
+ return nil, r.newErrCorruptedBH(bh, fmt.Sprintf("unknown compression type %#x", data[bh.length]))
+ }
+ return data, nil
+}
+
+func (r *Reader) readBlock(bh blockHandle, verifyChecksum bool) (*block, error) {
+ data, err := r.readRawBlock(bh, verifyChecksum)
+ if err != nil {
+ return nil, err
+ }
+ restartsLen := int(binary.LittleEndian.Uint32(data[len(data)-4:]))
+ b := &block{
+ bpool: r.bpool,
+ bh: bh,
+ data: data,
+ restartsLen: restartsLen,
+ restartsOffset: len(data) - (restartsLen+1)*4,
+ }
+ return b, nil
+}
+
+func (r *Reader) readBlockCached(bh blockHandle, verifyChecksum, fillCache bool) (*block, util.Releaser, error) {
+ if r.cache != nil {
+ var (
+ err error
+ ch *cache.Handle
+ )
+ if fillCache {
+ ch = r.cache.Get(bh.offset, func() (size int, value cache.Value) {
+ var b *block
+ b, err = r.readBlock(bh, verifyChecksum)
+ if err != nil {
+ return 0, nil
+ }
+ return cap(b.data), b
+ })
+ } else {
+ ch = r.cache.Get(bh.offset, nil)
+ }
+ if ch != nil {
+ b, ok := ch.Value().(*block)
+ if !ok {
+ ch.Release()
+ return nil, nil, errors.New("leveldb/table: inconsistent block type")
+ }
+ return b, ch, err
+ } else if err != nil {
+ return nil, nil, err
+ }
+ }
+
+ b, err := r.readBlock(bh, verifyChecksum)
+ return b, b, err
+}
+
+func (r *Reader) readFilterBlock(bh blockHandle) (*filterBlock, error) {
+ data, err := r.readRawBlock(bh, true)
+ if err != nil {
+ return nil, err
+ }
+ n := len(data)
+ if n < 5 {
+ return nil, r.newErrCorruptedBH(bh, "too short")
+ }
+ m := n - 5
+ oOffset := int(binary.LittleEndian.Uint32(data[m:]))
+ if oOffset > m {
+ return nil, r.newErrCorruptedBH(bh, "invalid data-offsets offset")
+ }
+ b := &filterBlock{
+ bpool: r.bpool,
+ data: data,
+ oOffset: oOffset,
+ baseLg: uint(data[n-1]),
+ filtersNum: (m - oOffset) / 4,
+ }
+ return b, nil
+}
+
+func (r *Reader) readFilterBlockCached(bh blockHandle, fillCache bool) (*filterBlock, util.Releaser, error) {
+ if r.cache != nil {
+ var (
+ err error
+ ch *cache.Handle
+ )
+ if fillCache {
+ ch = r.cache.Get(bh.offset, func() (size int, value cache.Value) {
+ var b *filterBlock
+ b, err = r.readFilterBlock(bh)
+ if err != nil {
+ return 0, nil
+ }
+ return cap(b.data), b
+ })
+ } else {
+ ch = r.cache.Get(bh.offset, nil)
+ }
+ if ch != nil {
+ b, ok := ch.Value().(*filterBlock)
+ if !ok {
+ ch.Release()
+ return nil, nil, errors.New("leveldb/table: inconsistent block type")
+ }
+ return b, ch, err
+ } else if err != nil {
+ return nil, nil, err
+ }
+ }
+
+ b, err := r.readFilterBlock(bh)
+ return b, b, err
+}
+
+func (r *Reader) getIndexBlock(fillCache bool) (b *block, rel util.Releaser, err error) {
+ if r.indexBlock == nil {
+ return r.readBlockCached(r.indexBH, true, fillCache)
+ }
+ return r.indexBlock, util.NoopReleaser{}, nil
+}
+
+func (r *Reader) getFilterBlock(fillCache bool) (*filterBlock, util.Releaser, error) {
+ if r.filterBlock == nil {
+ return r.readFilterBlockCached(r.filterBH, fillCache)
+ }
+ return r.filterBlock, util.NoopReleaser{}, nil
+}
+
+func (r *Reader) newBlockIter(b *block, bReleaser util.Releaser, slice *util.Range, inclLimit bool) *blockIter {
+ bi := &blockIter{
+ tr: r,
+ block: b,
+ blockReleaser: bReleaser,
+ // Valid key should never be nil.
+ key: make([]byte, 0),
+ dir: dirSOI,
+ riStart: 0,
+ riLimit: b.restartsLen,
+ offsetStart: 0,
+ offsetRealStart: 0,
+ offsetLimit: b.restartsOffset,
+ }
+ if slice != nil {
+ if slice.Start != nil {
+ if bi.Seek(slice.Start) {
+ bi.riStart = b.restartIndex(bi.restartIndex, b.restartsLen, bi.prevOffset)
+ bi.offsetStart = b.restartOffset(bi.riStart)
+ bi.offsetRealStart = bi.prevOffset
+ } else {
+ bi.riStart = b.restartsLen
+ bi.offsetStart = b.restartsOffset
+ bi.offsetRealStart = b.restartsOffset
+ }
+ }
+ if slice.Limit != nil {
+ if bi.Seek(slice.Limit) && (!inclLimit || bi.Next()) {
+ bi.offsetLimit = bi.prevOffset
+ bi.riLimit = bi.restartIndex + 1
+ }
+ }
+ bi.reset()
+ if bi.offsetStart > bi.offsetLimit {
+ bi.sErr(errors.New("leveldb/table: invalid slice range"))
+ }
+ }
+ return bi
+}
+
+func (r *Reader) getDataIter(dataBH blockHandle, slice *util.Range, verifyChecksum, fillCache bool) iterator.Iterator {
+ b, rel, err := r.readBlockCached(dataBH, verifyChecksum, fillCache)
+ if err != nil {
+ return iterator.NewEmptyIterator(err)
+ }
+ return r.newBlockIter(b, rel, slice, false)
+}
+
+func (r *Reader) getDataIterErr(dataBH blockHandle, slice *util.Range, verifyChecksum, fillCache bool) iterator.Iterator {
+ r.mu.RLock()
+ defer r.mu.RUnlock()
+
+ if r.err != nil {
+ return iterator.NewEmptyIterator(r.err)
+ }
+
+ return r.getDataIter(dataBH, slice, verifyChecksum, fillCache)
+}
+
+// NewIterator creates an iterator from the table.
+//
+// Slice allows slicing the iterator to only contains keys in the given
+// range. A nil Range.Start is treated as a key before all keys in the
+// table. And a nil Range.Limit is treated as a key after all keys in
+// the table.
+//
+// WARNING: Any slice returned by interator (e.g. slice returned by calling
+// Iterator.Key() or Iterator.Key() methods), its content should not be modified
+// unless noted otherwise.
+//
+// The returned iterator is not safe for concurrent use and should be released
+// after use.
+//
+// Also read Iterator documentation of the leveldb/iterator package.
+func (r *Reader) NewIterator(slice *util.Range, ro *opt.ReadOptions) iterator.Iterator {
+ r.mu.RLock()
+ defer r.mu.RUnlock()
+
+ if r.err != nil {
+ return iterator.NewEmptyIterator(r.err)
+ }
+
+ fillCache := !ro.GetDontFillCache()
+ indexBlock, rel, err := r.getIndexBlock(fillCache)
+ if err != nil {
+ return iterator.NewEmptyIterator(err)
+ }
+ index := &indexIter{
+ blockIter: r.newBlockIter(indexBlock, rel, slice, true),
+ tr: r,
+ slice: slice,
+ fillCache: !ro.GetDontFillCache(),
+ }
+ return iterator.NewIndexedIterator(index, opt.GetStrict(r.o, ro, opt.StrictReader))
+}
+
+func (r *Reader) find(key []byte, filtered bool, ro *opt.ReadOptions, noValue bool) (rkey, value []byte, err error) {
+ r.mu.RLock()
+ defer r.mu.RUnlock()
+
+ if r.err != nil {
+ err = r.err
+ return
+ }
+
+ indexBlock, rel, err := r.getIndexBlock(true)
+ if err != nil {
+ return
+ }
+ defer rel.Release()
+
+ index := r.newBlockIter(indexBlock, nil, nil, true)
+ defer index.Release()
+
+ if !index.Seek(key) {
+ if err = index.Error(); err == nil {
+ err = ErrNotFound
+ }
+ return
+ }
+
+ dataBH, n := decodeBlockHandle(index.Value())
+ if n == 0 {
+ r.err = r.newErrCorruptedBH(r.indexBH, "bad data block handle")
+ return nil, nil, r.err
+ }
+
+ // The filter should only used for exact match.
+ if filtered && r.filter != nil {
+ filterBlock, frel, ferr := r.getFilterBlock(true)
+ if ferr == nil {
+ if !filterBlock.contains(r.filter, dataBH.offset, key) {
+ frel.Release()
+ return nil, nil, ErrNotFound
+ }
+ frel.Release()
+ } else if !errors.IsCorrupted(ferr) {
+ return nil, nil, ferr
+ }
+ }
+
+ data := r.getDataIter(dataBH, nil, r.verifyChecksum, !ro.GetDontFillCache())
+ if !data.Seek(key) {
+ data.Release()
+ if err = data.Error(); err != nil {
+ return
+ }
+
+ // The nearest greater-than key is the first key of the next block.
+ if !index.Next() {
+ if err = index.Error(); err == nil {
+ err = ErrNotFound
+ }
+ return
+ }
+
+ dataBH, n = decodeBlockHandle(index.Value())
+ if n == 0 {
+ r.err = r.newErrCorruptedBH(r.indexBH, "bad data block handle")
+ return nil, nil, r.err
+ }
+
+ data = r.getDataIter(dataBH, nil, r.verifyChecksum, !ro.GetDontFillCache())
+ if !data.Next() {
+ data.Release()
+ if err = data.Error(); err == nil {
+ err = ErrNotFound
+ }
+ return
+ }
+ }
+
+ // Key doesn't use block buffer, no need to copy the buffer.
+ rkey = data.Key()
+ if !noValue {
+ if r.bpool == nil {
+ value = data.Value()
+ } else {
+ // Value does use block buffer, and since the buffer will be
+ // recycled, it need to be copied.
+ value = append([]byte{}, data.Value()...)
+ }
+ }
+ data.Release()
+ return
+}
+
+// Find finds key/value pair whose key is greater than or equal to the
+// given key. It returns ErrNotFound if the table doesn't contain
+// such pair.
+// If filtered is true then the nearest 'block' will be checked against
+// 'filter data' (if present) and will immediately return ErrNotFound if
+// 'filter data' indicates that such pair doesn't exist.
+//
+// The caller may modify the contents of the returned slice as it is its
+// own copy.
+// It is safe to modify the contents of the argument after Find returns.
+func (r *Reader) Find(key []byte, filtered bool, ro *opt.ReadOptions) (rkey, value []byte, err error) {
+ return r.find(key, filtered, ro, false)
+}
+
+// FindKey finds key that is greater than or equal to the given key.
+// It returns ErrNotFound if the table doesn't contain such key.
+// If filtered is true then the nearest 'block' will be checked against
+// 'filter data' (if present) and will immediately return ErrNotFound if
+// 'filter data' indicates that such key doesn't exist.
+//
+// The caller may modify the contents of the returned slice as it is its
+// own copy.
+// It is safe to modify the contents of the argument after Find returns.
+func (r *Reader) FindKey(key []byte, filtered bool, ro *opt.ReadOptions) (rkey []byte, err error) {
+ rkey, _, err = r.find(key, filtered, ro, true)
+ return
+}
+
+// Get gets the value for the given key. It returns errors.ErrNotFound
+// if the table does not contain the key.
+//
+// The caller may modify the contents of the returned slice as it is its
+// own copy.
+// It is safe to modify the contents of the argument after Find returns.
+func (r *Reader) Get(key []byte, ro *opt.ReadOptions) (value []byte, err error) {
+ r.mu.RLock()
+ defer r.mu.RUnlock()
+
+ if r.err != nil {
+ err = r.err
+ return
+ }
+
+ rkey, value, err := r.find(key, false, ro, false)
+ if err == nil && r.cmp.Compare(rkey, key) != 0 {
+ value = nil
+ err = ErrNotFound
+ }
+ return
+}
+
+// OffsetOf returns approximate offset for the given key.
+//
+// It is safe to modify the contents of the argument after Get returns.
+func (r *Reader) OffsetOf(key []byte) (offset int64, err error) {
+ r.mu.RLock()
+ defer r.mu.RUnlock()
+
+ if r.err != nil {
+ err = r.err
+ return
+ }
+
+ indexBlock, rel, err := r.readBlockCached(r.indexBH, true, true)
+ if err != nil {
+ return
+ }
+ defer rel.Release()
+
+ index := r.newBlockIter(indexBlock, nil, nil, true)
+ defer index.Release()
+ if index.Seek(key) {
+ dataBH, n := decodeBlockHandle(index.Value())
+ if n == 0 {
+ r.err = r.newErrCorruptedBH(r.indexBH, "bad data block handle")
+ return
+ }
+ offset = int64(dataBH.offset)
+ return
+ }
+ err = index.Error()
+ if err == nil {
+ offset = r.dataEnd
+ }
+ return
+}
+
+// Release implements util.Releaser.
+// It also close the file if it is an io.Closer.
+func (r *Reader) Release() {
+ r.mu.Lock()
+ defer r.mu.Unlock()
+
+ if closer, ok := r.reader.(io.Closer); ok {
+ closer.Close()
+ }
+ if r.indexBlock != nil {
+ r.indexBlock.Release()
+ r.indexBlock = nil
+ }
+ if r.filterBlock != nil {
+ r.filterBlock.Release()
+ r.filterBlock = nil
+ }
+ r.reader = nil
+ r.cache = nil
+ r.bpool = nil
+ r.err = ErrReaderReleased
+}
+
+// NewReader creates a new initialized table reader for the file.
+// The fi, cache and bpool is optional and can be nil.
+//
+// The returned table reader instance is safe for concurrent use.
+func NewReader(f io.ReaderAt, size int64, fd storage.FileDesc, cache *cache.NamespaceGetter, bpool *util.BufferPool, o *opt.Options) (*Reader, error) {
+ if f == nil {
+ return nil, errors.New("leveldb/table: nil file")
+ }
+
+ r := &Reader{
+ fd: fd,
+ reader: f,
+ cache: cache,
+ bpool: bpool,
+ o: o,
+ cmp: o.GetComparer(),
+ verifyChecksum: o.GetStrict(opt.StrictBlockChecksum),
+ }
+
+ if size < footerLen {
+ r.err = r.newErrCorrupted(0, size, "table", "too small")
+ return r, nil
+ }
+
+ footerPos := size - footerLen
+ var footer [footerLen]byte
+ if _, err := r.reader.ReadAt(footer[:], footerPos); err != nil && err != io.EOF {
+ return nil, err
+ }
+ if string(footer[footerLen-len(magic):footerLen]) != magic {
+ r.err = r.newErrCorrupted(footerPos, footerLen, "table-footer", "bad magic number")
+ return r, nil
+ }
+
+ var n int
+ // Decode the metaindex block handle.
+ r.metaBH, n = decodeBlockHandle(footer[:])
+ if n == 0 {
+ r.err = r.newErrCorrupted(footerPos, footerLen, "table-footer", "bad metaindex block handle")
+ return r, nil
+ }
+
+ // Decode the index block handle.
+ r.indexBH, n = decodeBlockHandle(footer[n:])
+ if n == 0 {
+ r.err = r.newErrCorrupted(footerPos, footerLen, "table-footer", "bad index block handle")
+ return r, nil
+ }
+
+ // Read metaindex block.
+ metaBlock, err := r.readBlock(r.metaBH, true)
+ if err != nil {
+ if errors.IsCorrupted(err) {
+ r.err = err
+ return r, nil
+ }
+ return nil, err
+ }
+
+ // Set data end.
+ r.dataEnd = int64(r.metaBH.offset)
+
+ // Read metaindex.
+ metaIter := r.newBlockIter(metaBlock, nil, nil, true)
+ for metaIter.Next() {
+ key := string(metaIter.Key())
+ if !strings.HasPrefix(key, "filter.") {
+ continue
+ }
+ fn := key[7:]
+ if f0 := o.GetFilter(); f0 != nil && f0.Name() == fn {
+ r.filter = f0
+ } else {
+ for _, f0 := range o.GetAltFilters() {
+ if f0.Name() == fn {
+ r.filter = f0
+ break
+ }
+ }
+ }
+ if r.filter != nil {
+ filterBH, n := decodeBlockHandle(metaIter.Value())
+ if n == 0 {
+ continue
+ }
+ r.filterBH = filterBH
+ // Update data end.
+ r.dataEnd = int64(filterBH.offset)
+ break
+ }
+ }
+ metaIter.Release()
+ metaBlock.Release()
+
+ // Cache index and filter block locally, since we don't have global cache.
+ if cache == nil {
+ r.indexBlock, err = r.readBlock(r.indexBH, true)
+ if err != nil {
+ if errors.IsCorrupted(err) {
+ r.err = err
+ return r, nil
+ }
+ return nil, err
+ }
+ if r.filter != nil {
+ r.filterBlock, err = r.readFilterBlock(r.filterBH)
+ if err != nil {
+ if !errors.IsCorrupted(err) {
+ return nil, err
+ }
+
+ // Don't use filter then.
+ r.filter = nil
+ }
+ }
+ }
+
+ return r, nil
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/table/table.go b/vendor/github.com/syndtr/goleveldb/leveldb/table/table.go
new file mode 100644
index 0000000..beacdc1
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/table/table.go
@@ -0,0 +1,177 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Package table allows read and write sorted key/value.
+package table
+
+import (
+ "encoding/binary"
+)
+
+/*
+Table:
+
+Table is consist of one or more data blocks, an optional filter block
+a metaindex block, an index block and a table footer. Metaindex block
+is a special block used to keep parameters of the table, such as filter
+block name and its block handle. Index block is a special block used to
+keep record of data blocks offset and length, index block use one as
+restart interval. The key used by index block are the last key of preceding
+block, shorter separator of adjacent blocks or shorter successor of the
+last key of the last block. Filter block is an optional block contains
+sequence of filter data generated by a filter generator.
+
+Table data structure:
+ + optional
+ /
+ +--------------+--------------+--------------+------+-------+-----------------+-------------+--------+
+ | data block 1 | ... | data block n | filter block | metaindex block | index block | footer |
+ +--------------+--------------+--------------+--------------+-----------------+-------------+--------+
+
+ Each block followed by a 5-bytes trailer contains compression type and checksum.
+
+Table block trailer:
+
+ +---------------------------+-------------------+
+ | compression type (1-byte) | checksum (4-byte) |
+ +---------------------------+-------------------+
+
+ The checksum is a CRC-32 computed using Castagnoli's polynomial. Compression
+ type also included in the checksum.
+
+Table footer:
+
+ +------------------- 40-bytes -------------------+
+ / \
+ +------------------------+--------------------+------+-----------------+
+ | metaindex block handle / index block handle / ---- | magic (8-bytes) |
+ +------------------------+--------------------+------+-----------------+
+
+ The magic are first 64-bit of SHA-1 sum of "http://code.google.com/p/leveldb/".
+
+NOTE: All fixed-length integer are little-endian.
+*/
+
+/*
+Block:
+
+Block is consist of one or more key/value entries and a block trailer.
+Block entry shares key prefix with its preceding key until a restart
+point reached. A block should contains at least one restart point.
+First restart point are always zero.
+
+Block data structure:
+
+ + restart point + restart point (depends on restart interval)
+ / /
+ +---------------+---------------+---------------+---------------+---------+
+ | block entry 1 | block entry 2 | ... | block entry n | trailer |
+ +---------------+---------------+---------------+---------------+---------+
+
+Key/value entry:
+
+ +---- key len ----+
+ / \
+ +-------+---------+-----------+---------+--------------------+--------------+----------------+
+ | shared (varint) | not shared (varint) | value len (varint) | key (varlen) | value (varlen) |
+ +-----------------+---------------------+--------------------+--------------+----------------+
+
+ Block entry shares key prefix with its preceding key:
+ Conditions:
+ restart_interval=2
+ entry one : key=deck,value=v1
+ entry two : key=dock,value=v2
+ entry three: key=duck,value=v3
+ The entries will be encoded as follow:
+
+ + restart point (offset=0) + restart point (offset=16)
+ / /
+ +-----+-----+-----+----------+--------+-----+-----+-----+---------+--------+-----+-----+-----+----------+--------+
+ | 0 | 4 | 2 | "deck" | "v1" | 1 | 3 | 2 | "ock" | "v2" | 0 | 4 | 2 | "duck" | "v3" |
+ +-----+-----+-----+----------+--------+-----+-----+-----+---------+--------+-----+-----+-----+----------+--------+
+ \ / \ / \ /
+ +----------- entry one -----------+ +----------- entry two ----------+ +---------- entry three ----------+
+
+ The block trailer will contains two restart points:
+
+ +------------+-----------+--------+
+ | 0 | 16 | 2 |
+ +------------+-----------+---+----+
+ \ / \
+ +-- restart points --+ + restart points length
+
+Block trailer:
+
+ +-- 4-bytes --+
+ / \
+ +-----------------+-----------------+-----------------+------------------------------+
+ | restart point 1 | .... | restart point n | restart points len (4-bytes) |
+ +-----------------+-----------------+-----------------+------------------------------+
+
+
+NOTE: All fixed-length integer are little-endian.
+*/
+
+/*
+Filter block:
+
+Filter block consist of one or more filter data and a filter block trailer.
+The trailer contains filter data offsets, a trailer offset and a 1-byte base Lg.
+
+Filter block data structure:
+
+ + offset 1 + offset 2 + offset n + trailer offset
+ / / / /
+ +---------------+---------------+---------------+---------+
+ | filter data 1 | ... | filter data n | trailer |
+ +---------------+---------------+---------------+---------+
+
+Filter block trailer:
+
+ +- 4-bytes -+
+ / \
+ +---------------+---------------+---------------+-------------------------------+------------------+
+ | data 1 offset | .... | data n offset | data-offsets offset (4-bytes) | base Lg (1-byte) |
+ +-------------- +---------------+---------------+-------------------------------+------------------+
+
+
+NOTE: All fixed-length integer are little-endian.
+*/
+
+const (
+ blockTrailerLen = 5
+ footerLen = 48
+
+ magic = "\x57\xfb\x80\x8b\x24\x75\x47\xdb"
+
+ // The block type gives the per-block compression format.
+ // These constants are part of the file format and should not be changed.
+ blockTypeNoCompression = 0
+ blockTypeSnappyCompression = 1
+
+ // Generate new filter every 2KB of data
+ filterBaseLg = 11
+ filterBase = 1 << filterBaseLg
+)
+
+type blockHandle struct {
+ offset, length uint64
+}
+
+func decodeBlockHandle(src []byte) (blockHandle, int) {
+ offset, n := binary.Uvarint(src)
+ length, m := binary.Uvarint(src[n:])
+ if n == 0 || m == 0 {
+ return blockHandle{}, 0
+ }
+ return blockHandle{offset, length}, n + m
+}
+
+func encodeBlockHandle(dst []byte, b blockHandle) int {
+ n := binary.PutUvarint(dst, b.offset)
+ m := binary.PutUvarint(dst[n:], b.length)
+ return n + m
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/table/writer.go b/vendor/github.com/syndtr/goleveldb/leveldb/table/writer.go
new file mode 100644
index 0000000..b96b271
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/table/writer.go
@@ -0,0 +1,375 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package table
+
+import (
+ "encoding/binary"
+ "errors"
+ "fmt"
+ "io"
+
+ "github.com/golang/snappy"
+
+ "github.com/syndtr/goleveldb/leveldb/comparer"
+ "github.com/syndtr/goleveldb/leveldb/filter"
+ "github.com/syndtr/goleveldb/leveldb/opt"
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+func sharedPrefixLen(a, b []byte) int {
+ i, n := 0, len(a)
+ if n > len(b) {
+ n = len(b)
+ }
+ for i < n && a[i] == b[i] {
+ i++
+ }
+ return i
+}
+
+type blockWriter struct {
+ restartInterval int
+ buf util.Buffer
+ nEntries int
+ prevKey []byte
+ restarts []uint32
+ scratch []byte
+}
+
+func (w *blockWriter) append(key, value []byte) {
+ nShared := 0
+ if w.nEntries%w.restartInterval == 0 {
+ w.restarts = append(w.restarts, uint32(w.buf.Len()))
+ } else {
+ nShared = sharedPrefixLen(w.prevKey, key)
+ }
+ n := binary.PutUvarint(w.scratch[0:], uint64(nShared))
+ n += binary.PutUvarint(w.scratch[n:], uint64(len(key)-nShared))
+ n += binary.PutUvarint(w.scratch[n:], uint64(len(value)))
+ w.buf.Write(w.scratch[:n])
+ w.buf.Write(key[nShared:])
+ w.buf.Write(value)
+ w.prevKey = append(w.prevKey[:0], key...)
+ w.nEntries++
+}
+
+func (w *blockWriter) finish() {
+ // Write restarts entry.
+ if w.nEntries == 0 {
+ // Must have at least one restart entry.
+ w.restarts = append(w.restarts, 0)
+ }
+ w.restarts = append(w.restarts, uint32(len(w.restarts)))
+ for _, x := range w.restarts {
+ buf4 := w.buf.Alloc(4)
+ binary.LittleEndian.PutUint32(buf4, x)
+ }
+}
+
+func (w *blockWriter) reset() {
+ w.buf.Reset()
+ w.nEntries = 0
+ w.restarts = w.restarts[:0]
+}
+
+func (w *blockWriter) bytesLen() int {
+ restartsLen := len(w.restarts)
+ if restartsLen == 0 {
+ restartsLen = 1
+ }
+ return w.buf.Len() + 4*restartsLen + 4
+}
+
+type filterWriter struct {
+ generator filter.FilterGenerator
+ buf util.Buffer
+ nKeys int
+ offsets []uint32
+}
+
+func (w *filterWriter) add(key []byte) {
+ if w.generator == nil {
+ return
+ }
+ w.generator.Add(key)
+ w.nKeys++
+}
+
+func (w *filterWriter) flush(offset uint64) {
+ if w.generator == nil {
+ return
+ }
+ for x := int(offset / filterBase); x > len(w.offsets); {
+ w.generate()
+ }
+}
+
+func (w *filterWriter) finish() {
+ if w.generator == nil {
+ return
+ }
+ // Generate last keys.
+
+ if w.nKeys > 0 {
+ w.generate()
+ }
+ w.offsets = append(w.offsets, uint32(w.buf.Len()))
+ for _, x := range w.offsets {
+ buf4 := w.buf.Alloc(4)
+ binary.LittleEndian.PutUint32(buf4, x)
+ }
+ w.buf.WriteByte(filterBaseLg)
+}
+
+func (w *filterWriter) generate() {
+ // Record offset.
+ w.offsets = append(w.offsets, uint32(w.buf.Len()))
+ // Generate filters.
+ if w.nKeys > 0 {
+ w.generator.Generate(&w.buf)
+ w.nKeys = 0
+ }
+}
+
+// Writer is a table writer.
+type Writer struct {
+ writer io.Writer
+ err error
+ // Options
+ cmp comparer.Comparer
+ filter filter.Filter
+ compression opt.Compression
+ blockSize int
+
+ dataBlock blockWriter
+ indexBlock blockWriter
+ filterBlock filterWriter
+ pendingBH blockHandle
+ offset uint64
+ nEntries int
+ // Scratch allocated enough for 5 uvarint. Block writer should not use
+ // first 20-bytes since it will be used to encode block handle, which
+ // then passed to the block writer itself.
+ scratch [50]byte
+ comparerScratch []byte
+ compressionScratch []byte
+}
+
+func (w *Writer) writeBlock(buf *util.Buffer, compression opt.Compression) (bh blockHandle, err error) {
+ // Compress the buffer if necessary.
+ var b []byte
+ if compression == opt.SnappyCompression {
+ // Allocate scratch enough for compression and block trailer.
+ if n := snappy.MaxEncodedLen(buf.Len()) + blockTrailerLen; len(w.compressionScratch) < n {
+ w.compressionScratch = make([]byte, n)
+ }
+ compressed := snappy.Encode(w.compressionScratch, buf.Bytes())
+ n := len(compressed)
+ b = compressed[:n+blockTrailerLen]
+ b[n] = blockTypeSnappyCompression
+ } else {
+ tmp := buf.Alloc(blockTrailerLen)
+ tmp[0] = blockTypeNoCompression
+ b = buf.Bytes()
+ }
+
+ // Calculate the checksum.
+ n := len(b) - 4
+ checksum := util.NewCRC(b[:n]).Value()
+ binary.LittleEndian.PutUint32(b[n:], checksum)
+
+ // Write the buffer to the file.
+ _, err = w.writer.Write(b)
+ if err != nil {
+ return
+ }
+ bh = blockHandle{w.offset, uint64(len(b) - blockTrailerLen)}
+ w.offset += uint64(len(b))
+ return
+}
+
+func (w *Writer) flushPendingBH(key []byte) {
+ if w.pendingBH.length == 0 {
+ return
+ }
+ var separator []byte
+ if len(key) == 0 {
+ separator = w.cmp.Successor(w.comparerScratch[:0], w.dataBlock.prevKey)
+ } else {
+ separator = w.cmp.Separator(w.comparerScratch[:0], w.dataBlock.prevKey, key)
+ }
+ if separator == nil {
+ separator = w.dataBlock.prevKey
+ } else {
+ w.comparerScratch = separator
+ }
+ n := encodeBlockHandle(w.scratch[:20], w.pendingBH)
+ // Append the block handle to the index block.
+ w.indexBlock.append(separator, w.scratch[:n])
+ // Reset prev key of the data block.
+ w.dataBlock.prevKey = w.dataBlock.prevKey[:0]
+ // Clear pending block handle.
+ w.pendingBH = blockHandle{}
+}
+
+func (w *Writer) finishBlock() error {
+ w.dataBlock.finish()
+ bh, err := w.writeBlock(&w.dataBlock.buf, w.compression)
+ if err != nil {
+ return err
+ }
+ w.pendingBH = bh
+ // Reset the data block.
+ w.dataBlock.reset()
+ // Flush the filter block.
+ w.filterBlock.flush(w.offset)
+ return nil
+}
+
+// Append appends key/value pair to the table. The keys passed must
+// be in increasing order.
+//
+// It is safe to modify the contents of the arguments after Append returns.
+func (w *Writer) Append(key, value []byte) error {
+ if w.err != nil {
+ return w.err
+ }
+ if w.nEntries > 0 && w.cmp.Compare(w.dataBlock.prevKey, key) >= 0 {
+ w.err = fmt.Errorf("leveldb/table: Writer: keys are not in increasing order: %q, %q", w.dataBlock.prevKey, key)
+ return w.err
+ }
+
+ w.flushPendingBH(key)
+ // Append key/value pair to the data block.
+ w.dataBlock.append(key, value)
+ // Add key to the filter block.
+ w.filterBlock.add(key)
+
+ // Finish the data block if block size target reached.
+ if w.dataBlock.bytesLen() >= w.blockSize {
+ if err := w.finishBlock(); err != nil {
+ w.err = err
+ return w.err
+ }
+ }
+ w.nEntries++
+ return nil
+}
+
+// BlocksLen returns number of blocks written so far.
+func (w *Writer) BlocksLen() int {
+ n := w.indexBlock.nEntries
+ if w.pendingBH.length > 0 {
+ // Includes the pending block.
+ n++
+ }
+ return n
+}
+
+// EntriesLen returns number of entries added so far.
+func (w *Writer) EntriesLen() int {
+ return w.nEntries
+}
+
+// BytesLen returns number of bytes written so far.
+func (w *Writer) BytesLen() int {
+ return int(w.offset)
+}
+
+// Close will finalize the table. Calling Append is not possible
+// after Close, but calling BlocksLen, EntriesLen and BytesLen
+// is still possible.
+func (w *Writer) Close() error {
+ if w.err != nil {
+ return w.err
+ }
+
+ // Write the last data block. Or empty data block if there
+ // aren't any data blocks at all.
+ if w.dataBlock.nEntries > 0 || w.nEntries == 0 {
+ if err := w.finishBlock(); err != nil {
+ w.err = err
+ return w.err
+ }
+ }
+ w.flushPendingBH(nil)
+
+ // Write the filter block.
+ var filterBH blockHandle
+ w.filterBlock.finish()
+ if buf := &w.filterBlock.buf; buf.Len() > 0 {
+ filterBH, w.err = w.writeBlock(buf, opt.NoCompression)
+ if w.err != nil {
+ return w.err
+ }
+ }
+
+ // Write the metaindex block.
+ if filterBH.length > 0 {
+ key := []byte("filter." + w.filter.Name())
+ n := encodeBlockHandle(w.scratch[:20], filterBH)
+ w.dataBlock.append(key, w.scratch[:n])
+ }
+ w.dataBlock.finish()
+ metaindexBH, err := w.writeBlock(&w.dataBlock.buf, w.compression)
+ if err != nil {
+ w.err = err
+ return w.err
+ }
+
+ // Write the index block.
+ w.indexBlock.finish()
+ indexBH, err := w.writeBlock(&w.indexBlock.buf, w.compression)
+ if err != nil {
+ w.err = err
+ return w.err
+ }
+
+ // Write the table footer.
+ footer := w.scratch[:footerLen]
+ for i := range footer {
+ footer[i] = 0
+ }
+ n := encodeBlockHandle(footer, metaindexBH)
+ encodeBlockHandle(footer[n:], indexBH)
+ copy(footer[footerLen-len(magic):], magic)
+ if _, err := w.writer.Write(footer); err != nil {
+ w.err = err
+ return w.err
+ }
+ w.offset += footerLen
+
+ w.err = errors.New("leveldb/table: writer is closed")
+ return nil
+}
+
+// NewWriter creates a new initialized table writer for the file.
+//
+// Table writer is not safe for concurrent use.
+func NewWriter(f io.Writer, o *opt.Options) *Writer {
+ w := &Writer{
+ writer: f,
+ cmp: o.GetComparer(),
+ filter: o.GetFilter(),
+ compression: o.GetCompression(),
+ blockSize: o.GetBlockSize(),
+ comparerScratch: make([]byte, 0),
+ }
+ // data block
+ w.dataBlock.restartInterval = o.GetBlockRestartInterval()
+ // The first 20-bytes are used for encoding block handle.
+ w.dataBlock.scratch = w.scratch[20:]
+ // index block
+ w.indexBlock.restartInterval = 1
+ w.indexBlock.scratch = w.scratch[20:]
+ // filter block
+ if w.filter != nil {
+ w.filterBlock.generator = w.filter.NewGenerator()
+ w.filterBlock.flush(0)
+ }
+ return w
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/util.go b/vendor/github.com/syndtr/goleveldb/leveldb/util.go
new file mode 100644
index 0000000..0e2b519
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/util.go
@@ -0,0 +1,98 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "fmt"
+ "sort"
+
+ "github.com/syndtr/goleveldb/leveldb/storage"
+)
+
+func shorten(str string) string {
+ if len(str) <= 8 {
+ return str
+ }
+ return str[:3] + ".." + str[len(str)-3:]
+}
+
+var bunits = [...]string{"", "Ki", "Mi", "Gi", "Ti"}
+
+func shortenb(bytes int) string {
+ i := 0
+ for ; bytes > 1024 && i < 4; i++ {
+ bytes /= 1024
+ }
+ return fmt.Sprintf("%d%sB", bytes, bunits[i])
+}
+
+func sshortenb(bytes int) string {
+ if bytes == 0 {
+ return "~"
+ }
+ sign := "+"
+ if bytes < 0 {
+ sign = "-"
+ bytes *= -1
+ }
+ i := 0
+ for ; bytes > 1024 && i < 4; i++ {
+ bytes /= 1024
+ }
+ return fmt.Sprintf("%s%d%sB", sign, bytes, bunits[i])
+}
+
+func sint(x int) string {
+ if x == 0 {
+ return "~"
+ }
+ sign := "+"
+ if x < 0 {
+ sign = "-"
+ x *= -1
+ }
+ return fmt.Sprintf("%s%d", sign, x)
+}
+
+func minInt(a, b int) int {
+ if a < b {
+ return a
+ }
+ return b
+}
+
+func maxInt(a, b int) int {
+ if a > b {
+ return a
+ }
+ return b
+}
+
+type fdSorter []storage.FileDesc
+
+func (p fdSorter) Len() int {
+ return len(p)
+}
+
+func (p fdSorter) Less(i, j int) bool {
+ return p[i].Num < p[j].Num
+}
+
+func (p fdSorter) Swap(i, j int) {
+ p[i], p[j] = p[j], p[i]
+}
+
+func sortFds(fds []storage.FileDesc) {
+ sort.Sort(fdSorter(fds))
+}
+
+func ensureBuffer(b []byte, n int) []byte {
+ if cap(b) < n {
+ return make([]byte, n)
+ }
+ return b[:n]
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/util/buffer.go b/vendor/github.com/syndtr/goleveldb/leveldb/util/buffer.go
new file mode 100644
index 0000000..21de242
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/util/buffer.go
@@ -0,0 +1,293 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package util
+
+// This a copy of Go std bytes.Buffer with some modification
+// and some features stripped.
+
+import (
+ "bytes"
+ "io"
+)
+
+// A Buffer is a variable-sized buffer of bytes with Read and Write methods.
+// The zero value for Buffer is an empty buffer ready to use.
+type Buffer struct {
+ buf []byte // contents are the bytes buf[off : len(buf)]
+ off int // read at &buf[off], write at &buf[len(buf)]
+ bootstrap [64]byte // memory to hold first slice; helps small buffers (Printf) avoid allocation.
+}
+
+// Bytes returns a slice of the contents of the unread portion of the buffer;
+// len(b.Bytes()) == b.Len(). If the caller changes the contents of the
+// returned slice, the contents of the buffer will change provided there
+// are no intervening method calls on the Buffer.
+func (b *Buffer) Bytes() []byte { return b.buf[b.off:] }
+
+// String returns the contents of the unread portion of the buffer
+// as a string. If the Buffer is a nil pointer, it returns "".
+func (b *Buffer) String() string {
+ if b == nil {
+ // Special case, useful in debugging.
+ return ""
+ }
+ return string(b.buf[b.off:])
+}
+
+// Len returns the number of bytes of the unread portion of the buffer;
+// b.Len() == len(b.Bytes()).
+func (b *Buffer) Len() int { return len(b.buf) - b.off }
+
+// Truncate discards all but the first n unread bytes from the buffer.
+// It panics if n is negative or greater than the length of the buffer.
+func (b *Buffer) Truncate(n int) {
+ switch {
+ case n < 0 || n > b.Len():
+ panic("leveldb/util.Buffer: truncation out of range")
+ case n == 0:
+ // Reuse buffer space.
+ b.off = 0
+ }
+ b.buf = b.buf[0 : b.off+n]
+}
+
+// Reset resets the buffer so it has no content.
+// b.Reset() is the same as b.Truncate(0).
+func (b *Buffer) Reset() { b.Truncate(0) }
+
+// grow grows the buffer to guarantee space for n more bytes.
+// It returns the index where bytes should be written.
+// If the buffer can't grow it will panic with bytes.ErrTooLarge.
+func (b *Buffer) grow(n int) int {
+ m := b.Len()
+ // If buffer is empty, reset to recover space.
+ if m == 0 && b.off != 0 {
+ b.Truncate(0)
+ }
+ if len(b.buf)+n > cap(b.buf) {
+ var buf []byte
+ if b.buf == nil && n <= len(b.bootstrap) {
+ buf = b.bootstrap[0:]
+ } else if m+n <= cap(b.buf)/2 {
+ // We can slide things down instead of allocating a new
+ // slice. We only need m+n <= cap(b.buf) to slide, but
+ // we instead let capacity get twice as large so we
+ // don't spend all our time copying.
+ copy(b.buf[:], b.buf[b.off:])
+ buf = b.buf[:m]
+ } else {
+ // not enough space anywhere
+ buf = makeSlice(2*cap(b.buf) + n)
+ copy(buf, b.buf[b.off:])
+ }
+ b.buf = buf
+ b.off = 0
+ }
+ b.buf = b.buf[0 : b.off+m+n]
+ return b.off + m
+}
+
+// Alloc allocs n bytes of slice from the buffer, growing the buffer as
+// needed. If n is negative, Alloc will panic.
+// If the buffer can't grow it will panic with bytes.ErrTooLarge.
+func (b *Buffer) Alloc(n int) []byte {
+ if n < 0 {
+ panic("leveldb/util.Buffer.Alloc: negative count")
+ }
+ m := b.grow(n)
+ return b.buf[m:]
+}
+
+// Grow grows the buffer's capacity, if necessary, to guarantee space for
+// another n bytes. After Grow(n), at least n bytes can be written to the
+// buffer without another allocation.
+// If n is negative, Grow will panic.
+// If the buffer can't grow it will panic with bytes.ErrTooLarge.
+func (b *Buffer) Grow(n int) {
+ if n < 0 {
+ panic("leveldb/util.Buffer.Grow: negative count")
+ }
+ m := b.grow(n)
+ b.buf = b.buf[0:m]
+}
+
+// Write appends the contents of p to the buffer, growing the buffer as
+// needed. The return value n is the length of p; err is always nil. If the
+// buffer becomes too large, Write will panic with bytes.ErrTooLarge.
+func (b *Buffer) Write(p []byte) (n int, err error) {
+ m := b.grow(len(p))
+ return copy(b.buf[m:], p), nil
+}
+
+// MinRead is the minimum slice size passed to a Read call by
+// Buffer.ReadFrom. As long as the Buffer has at least MinRead bytes beyond
+// what is required to hold the contents of r, ReadFrom will not grow the
+// underlying buffer.
+const MinRead = 512
+
+// ReadFrom reads data from r until EOF and appends it to the buffer, growing
+// the buffer as needed. The return value n is the number of bytes read. Any
+// error except io.EOF encountered during the read is also returned. If the
+// buffer becomes too large, ReadFrom will panic with bytes.ErrTooLarge.
+func (b *Buffer) ReadFrom(r io.Reader) (n int64, err error) {
+ // If buffer is empty, reset to recover space.
+ if b.off >= len(b.buf) {
+ b.Truncate(0)
+ }
+ for {
+ if free := cap(b.buf) - len(b.buf); free < MinRead {
+ // not enough space at end
+ newBuf := b.buf
+ if b.off+free < MinRead {
+ // not enough space using beginning of buffer;
+ // double buffer capacity
+ newBuf = makeSlice(2*cap(b.buf) + MinRead)
+ }
+ copy(newBuf, b.buf[b.off:])
+ b.buf = newBuf[:len(b.buf)-b.off]
+ b.off = 0
+ }
+ m, e := r.Read(b.buf[len(b.buf):cap(b.buf)])
+ b.buf = b.buf[0 : len(b.buf)+m]
+ n += int64(m)
+ if e == io.EOF {
+ break
+ }
+ if e != nil {
+ return n, e
+ }
+ }
+ return n, nil // err is EOF, so return nil explicitly
+}
+
+// makeSlice allocates a slice of size n. If the allocation fails, it panics
+// with bytes.ErrTooLarge.
+func makeSlice(n int) []byte {
+ // If the make fails, give a known error.
+ defer func() {
+ if recover() != nil {
+ panic(bytes.ErrTooLarge)
+ }
+ }()
+ return make([]byte, n)
+}
+
+// WriteTo writes data to w until the buffer is drained or an error occurs.
+// The return value n is the number of bytes written; it always fits into an
+// int, but it is int64 to match the io.WriterTo interface. Any error
+// encountered during the write is also returned.
+func (b *Buffer) WriteTo(w io.Writer) (n int64, err error) {
+ if b.off < len(b.buf) {
+ nBytes := b.Len()
+ m, e := w.Write(b.buf[b.off:])
+ if m > nBytes {
+ panic("leveldb/util.Buffer.WriteTo: invalid Write count")
+ }
+ b.off += m
+ n = int64(m)
+ if e != nil {
+ return n, e
+ }
+ // all bytes should have been written, by definition of
+ // Write method in io.Writer
+ if m != nBytes {
+ return n, io.ErrShortWrite
+ }
+ }
+ // Buffer is now empty; reset.
+ b.Truncate(0)
+ return
+}
+
+// WriteByte appends the byte c to the buffer, growing the buffer as needed.
+// The returned error is always nil, but is included to match bufio.Writer's
+// WriteByte. If the buffer becomes too large, WriteByte will panic with
+// bytes.ErrTooLarge.
+func (b *Buffer) WriteByte(c byte) error {
+ m := b.grow(1)
+ b.buf[m] = c
+ return nil
+}
+
+// Read reads the next len(p) bytes from the buffer or until the buffer
+// is drained. The return value n is the number of bytes read. If the
+// buffer has no data to return, err is io.EOF (unless len(p) is zero);
+// otherwise it is nil.
+func (b *Buffer) Read(p []byte) (n int, err error) {
+ if b.off >= len(b.buf) {
+ // Buffer is empty, reset to recover space.
+ b.Truncate(0)
+ if len(p) == 0 {
+ return
+ }
+ return 0, io.EOF
+ }
+ n = copy(p, b.buf[b.off:])
+ b.off += n
+ return
+}
+
+// Next returns a slice containing the next n bytes from the buffer,
+// advancing the buffer as if the bytes had been returned by Read.
+// If there are fewer than n bytes in the buffer, Next returns the entire buffer.
+// The slice is only valid until the next call to a read or write method.
+func (b *Buffer) Next(n int) []byte {
+ m := b.Len()
+ if n > m {
+ n = m
+ }
+ data := b.buf[b.off : b.off+n]
+ b.off += n
+ return data
+}
+
+// ReadByte reads and returns the next byte from the buffer.
+// If no byte is available, it returns error io.EOF.
+func (b *Buffer) ReadByte() (c byte, err error) {
+ if b.off >= len(b.buf) {
+ // Buffer is empty, reset to recover space.
+ b.Truncate(0)
+ return 0, io.EOF
+ }
+ c = b.buf[b.off]
+ b.off++
+ return c, nil
+}
+
+// ReadBytes reads until the first occurrence of delim in the input,
+// returning a slice containing the data up to and including the delimiter.
+// If ReadBytes encounters an error before finding a delimiter,
+// it returns the data read before the error and the error itself (often io.EOF).
+// ReadBytes returns err != nil if and only if the returned data does not end in
+// delim.
+func (b *Buffer) ReadBytes(delim byte) (line []byte, err error) {
+ slice, err := b.readSlice(delim)
+ // return a copy of slice. The buffer's backing array may
+ // be overwritten by later calls.
+ line = append(line, slice...)
+ return
+}
+
+// readSlice is like ReadBytes but returns a reference to internal buffer data.
+func (b *Buffer) readSlice(delim byte) (line []byte, err error) {
+ i := bytes.IndexByte(b.buf[b.off:], delim)
+ end := b.off + i + 1
+ if i < 0 {
+ end = len(b.buf)
+ err = io.EOF
+ }
+ line = b.buf[b.off:end]
+ b.off = end
+ return line, err
+}
+
+// NewBuffer creates and initializes a new Buffer using buf as its initial
+// contents. It is intended to prepare a Buffer to read existing data. It
+// can also be used to size the internal buffer for writing. To do that,
+// buf should have the desired capacity but a length of zero.
+//
+// In most cases, new(Buffer) (or just declaring a Buffer variable) is
+// sufficient to initialize a Buffer.
+func NewBuffer(buf []byte) *Buffer { return &Buffer{buf: buf} }
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/util/buffer_pool.go b/vendor/github.com/syndtr/goleveldb/leveldb/util/buffer_pool.go
new file mode 100644
index 0000000..2f3db97
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/util/buffer_pool.go
@@ -0,0 +1,239 @@
+// Copyright (c) 2014, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package util
+
+import (
+ "fmt"
+ "sync"
+ "sync/atomic"
+ "time"
+)
+
+type buffer struct {
+ b []byte
+ miss int
+}
+
+// BufferPool is a 'buffer pool'.
+type BufferPool struct {
+ pool [6]chan []byte
+ size [5]uint32
+ sizeMiss [5]uint32
+ sizeHalf [5]uint32
+ baseline [4]int
+ baseline0 int
+
+ mu sync.RWMutex
+ closed bool
+ closeC chan struct{}
+
+ get uint32
+ put uint32
+ half uint32
+ less uint32
+ equal uint32
+ greater uint32
+ miss uint32
+}
+
+func (p *BufferPool) poolNum(n int) int {
+ if n <= p.baseline0 && n > p.baseline0/2 {
+ return 0
+ }
+ for i, x := range p.baseline {
+ if n <= x {
+ return i + 1
+ }
+ }
+ return len(p.baseline) + 1
+}
+
+// Get returns buffer with length of n.
+func (p *BufferPool) Get(n int) []byte {
+ if p == nil {
+ return make([]byte, n)
+ }
+
+ p.mu.RLock()
+ defer p.mu.RUnlock()
+
+ if p.closed {
+ return make([]byte, n)
+ }
+
+ atomic.AddUint32(&p.get, 1)
+
+ poolNum := p.poolNum(n)
+ pool := p.pool[poolNum]
+ if poolNum == 0 {
+ // Fast path.
+ select {
+ case b := <-pool:
+ switch {
+ case cap(b) > n:
+ if cap(b)-n >= n {
+ atomic.AddUint32(&p.half, 1)
+ select {
+ case pool <- b:
+ default:
+ }
+ return make([]byte, n)
+ } else {
+ atomic.AddUint32(&p.less, 1)
+ return b[:n]
+ }
+ case cap(b) == n:
+ atomic.AddUint32(&p.equal, 1)
+ return b[:n]
+ default:
+ atomic.AddUint32(&p.greater, 1)
+ }
+ default:
+ atomic.AddUint32(&p.miss, 1)
+ }
+
+ return make([]byte, n, p.baseline0)
+ } else {
+ sizePtr := &p.size[poolNum-1]
+
+ select {
+ case b := <-pool:
+ switch {
+ case cap(b) > n:
+ if cap(b)-n >= n {
+ atomic.AddUint32(&p.half, 1)
+ sizeHalfPtr := &p.sizeHalf[poolNum-1]
+ if atomic.AddUint32(sizeHalfPtr, 1) == 20 {
+ atomic.StoreUint32(sizePtr, uint32(cap(b)/2))
+ atomic.StoreUint32(sizeHalfPtr, 0)
+ } else {
+ select {
+ case pool <- b:
+ default:
+ }
+ }
+ return make([]byte, n)
+ } else {
+ atomic.AddUint32(&p.less, 1)
+ return b[:n]
+ }
+ case cap(b) == n:
+ atomic.AddUint32(&p.equal, 1)
+ return b[:n]
+ default:
+ atomic.AddUint32(&p.greater, 1)
+ if uint32(cap(b)) >= atomic.LoadUint32(sizePtr) {
+ select {
+ case pool <- b:
+ default:
+ }
+ }
+ }
+ default:
+ atomic.AddUint32(&p.miss, 1)
+ }
+
+ if size := atomic.LoadUint32(sizePtr); uint32(n) > size {
+ if size == 0 {
+ atomic.CompareAndSwapUint32(sizePtr, 0, uint32(n))
+ } else {
+ sizeMissPtr := &p.sizeMiss[poolNum-1]
+ if atomic.AddUint32(sizeMissPtr, 1) == 20 {
+ atomic.StoreUint32(sizePtr, uint32(n))
+ atomic.StoreUint32(sizeMissPtr, 0)
+ }
+ }
+ return make([]byte, n)
+ } else {
+ return make([]byte, n, size)
+ }
+ }
+}
+
+// Put adds given buffer to the pool.
+func (p *BufferPool) Put(b []byte) {
+ if p == nil {
+ return
+ }
+
+ p.mu.RLock()
+ defer p.mu.RUnlock()
+
+ if p.closed {
+ return
+ }
+
+ atomic.AddUint32(&p.put, 1)
+
+ pool := p.pool[p.poolNum(cap(b))]
+ select {
+ case pool <- b:
+ default:
+ }
+
+}
+
+func (p *BufferPool) Close() {
+ if p == nil {
+ return
+ }
+
+ p.mu.Lock()
+ if !p.closed {
+ p.closed = true
+ p.closeC <- struct{}{}
+ }
+ p.mu.Unlock()
+}
+
+func (p *BufferPool) String() string {
+ if p == nil {
+ return ""
+ }
+
+ return fmt.Sprintf("BufferPool{B·%d Z·%v Zm·%v Zh·%v G·%d P·%d H·%d <·%d =·%d >·%d M·%d}",
+ p.baseline0, p.size, p.sizeMiss, p.sizeHalf, p.get, p.put, p.half, p.less, p.equal, p.greater, p.miss)
+}
+
+func (p *BufferPool) drain() {
+ ticker := time.NewTicker(2 * time.Second)
+ defer ticker.Stop()
+ for {
+ select {
+ case <-ticker.C:
+ for _, ch := range p.pool {
+ select {
+ case <-ch:
+ default:
+ }
+ }
+ case <-p.closeC:
+ close(p.closeC)
+ for _, ch := range p.pool {
+ close(ch)
+ }
+ return
+ }
+ }
+}
+
+// NewBufferPool creates a new initialized 'buffer pool'.
+func NewBufferPool(baseline int) *BufferPool {
+ if baseline <= 0 {
+ panic("baseline can't be <= 0")
+ }
+ p := &BufferPool{
+ baseline0: baseline,
+ baseline: [...]int{baseline / 4, baseline / 2, baseline * 2, baseline * 4},
+ closeC: make(chan struct{}, 1),
+ }
+ for i, cap := range []int{2, 2, 4, 4, 2, 1} {
+ p.pool[i] = make(chan []byte, cap)
+ }
+ go p.drain()
+ return p
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/util/crc32.go b/vendor/github.com/syndtr/goleveldb/leveldb/util/crc32.go
new file mode 100644
index 0000000..631c9d6
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/util/crc32.go
@@ -0,0 +1,30 @@
+// Copyright 2011 The LevelDB-Go Authors. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package util
+
+import (
+ "hash/crc32"
+)
+
+var table = crc32.MakeTable(crc32.Castagnoli)
+
+// CRC is a CRC-32 checksum computed using Castagnoli's polynomial.
+type CRC uint32
+
+// NewCRC creates a new crc based on the given bytes.
+func NewCRC(b []byte) CRC {
+ return CRC(0).Update(b)
+}
+
+// Update updates the crc with the given bytes.
+func (c CRC) Update(b []byte) CRC {
+ return CRC(crc32.Update(uint32(c), table, b))
+}
+
+// Value returns a masked crc.
+func (c CRC) Value() uint32 {
+ return uint32(c>>15|c<<17) + 0xa282ead8
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/util/hash.go b/vendor/github.com/syndtr/goleveldb/leveldb/util/hash.go
new file mode 100644
index 0000000..7f3fa4e
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/util/hash.go
@@ -0,0 +1,48 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package util
+
+import (
+ "encoding/binary"
+)
+
+// Hash return hash of the given data.
+func Hash(data []byte, seed uint32) uint32 {
+ // Similar to murmur hash
+ const (
+ m = uint32(0xc6a4a793)
+ r = uint32(24)
+ )
+ var (
+ h = seed ^ (uint32(len(data)) * m)
+ i int
+ )
+
+ for n := len(data) - len(data)%4; i < n; i += 4 {
+ h += binary.LittleEndian.Uint32(data[i:])
+ h *= m
+ h ^= (h >> 16)
+ }
+
+ switch len(data) - i {
+ default:
+ panic("not reached")
+ case 3:
+ h += uint32(data[i+2]) << 16
+ fallthrough
+ case 2:
+ h += uint32(data[i+1]) << 8
+ fallthrough
+ case 1:
+ h += uint32(data[i])
+ h *= m
+ h ^= (h >> r)
+ case 0:
+ }
+
+ return h
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/util/range.go b/vendor/github.com/syndtr/goleveldb/leveldb/util/range.go
new file mode 100644
index 0000000..8515958
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/util/range.go
@@ -0,0 +1,32 @@
+// Copyright (c) 2014, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package util
+
+// Range is a key range.
+type Range struct {
+ // Start of the key range, include in the range.
+ Start []byte
+
+ // Limit of the key range, not include in the range.
+ Limit []byte
+}
+
+// BytesPrefix returns key range that satisfy the given prefix.
+// This only applicable for the standard 'bytes comparer'.
+func BytesPrefix(prefix []byte) *Range {
+ var limit []byte
+ for i := len(prefix) - 1; i >= 0; i-- {
+ c := prefix[i]
+ if c < 0xff {
+ limit = make([]byte, i+1)
+ copy(limit, prefix)
+ limit[i] = c + 1
+ break
+ }
+ }
+ return &Range{prefix, limit}
+}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/util/util.go b/vendor/github.com/syndtr/goleveldb/leveldb/util/util.go
new file mode 100644
index 0000000..80614af
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/util/util.go
@@ -0,0 +1,73 @@
+// Copyright (c) 2013, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Package util provides utilities used throughout leveldb.
+package util
+
+import (
+ "errors"
+)
+
+var (
+ ErrReleased = errors.New("leveldb: resource already relesed")
+ ErrHasReleaser = errors.New("leveldb: releaser already defined")
+)
+
+// Releaser is the interface that wraps the basic Release method.
+type Releaser interface {
+ // Release releases associated resources. Release should always success
+ // and can be called multiple times without causing error.
+ Release()
+}
+
+// ReleaseSetter is the interface that wraps the basic SetReleaser method.
+type ReleaseSetter interface {
+ // SetReleaser associates the given releaser to the resources. The
+ // releaser will be called once coresponding resources released.
+ // Calling SetReleaser with nil will clear the releaser.
+ //
+ // This will panic if a releaser already present or coresponding
+ // resource is already released. Releaser should be cleared first
+ // before assigned a new one.
+ SetReleaser(releaser Releaser)
+}
+
+// BasicReleaser provides basic implementation of Releaser and ReleaseSetter.
+type BasicReleaser struct {
+ releaser Releaser
+ released bool
+}
+
+// Released returns whether Release method already called.
+func (r *BasicReleaser) Released() bool {
+ return r.released
+}
+
+// Release implements Releaser.Release.
+func (r *BasicReleaser) Release() {
+ if !r.released {
+ if r.releaser != nil {
+ r.releaser.Release()
+ r.releaser = nil
+ }
+ r.released = true
+ }
+}
+
+// SetReleaser implements ReleaseSetter.SetReleaser.
+func (r *BasicReleaser) SetReleaser(releaser Releaser) {
+ if r.released {
+ panic(ErrReleased)
+ }
+ if r.releaser != nil && releaser != nil {
+ panic(ErrHasReleaser)
+ }
+ r.releaser = releaser
+}
+
+type NoopReleaser struct{}
+
+func (NoopReleaser) Release() {}
diff --git a/vendor/github.com/syndtr/goleveldb/leveldb/version.go b/vendor/github.com/syndtr/goleveldb/leveldb/version.go
new file mode 100644
index 0000000..73f272a
--- /dev/null
+++ b/vendor/github.com/syndtr/goleveldb/leveldb/version.go
@@ -0,0 +1,528 @@
+// Copyright (c) 2012, Suryandaru Triandana
+// All rights reserved.
+//
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package leveldb
+
+import (
+ "fmt"
+ "sync/atomic"
+ "unsafe"
+
+ "github.com/syndtr/goleveldb/leveldb/iterator"
+ "github.com/syndtr/goleveldb/leveldb/opt"
+ "github.com/syndtr/goleveldb/leveldb/util"
+)
+
+type tSet struct {
+ level int
+ table *tFile
+}
+
+type version struct {
+ s *session
+
+ levels []tFiles
+
+ // Level that should be compacted next and its compaction score.
+ // Score < 1 means compaction is not strictly needed. These fields
+ // are initialized by computeCompaction()
+ cLevel int
+ cScore float64
+
+ cSeek unsafe.Pointer
+
+ closing bool
+ ref int
+ released bool
+}
+
+func newVersion(s *session) *version {
+ return &version{s: s}
+}
+
+func (v *version) incref() {
+ if v.released {
+ panic("already released")
+ }
+
+ v.ref++
+ if v.ref == 1 {
+ // Incr file ref.
+ for _, tt := range v.levels {
+ for _, t := range tt {
+ v.s.addFileRef(t.fd, 1)
+ }
+ }
+ }
+}
+
+func (v *version) releaseNB() {
+ v.ref--
+ if v.ref > 0 {
+ return
+ } else if v.ref < 0 {
+ panic("negative version ref")
+ }
+
+ for _, tt := range v.levels {
+ for _, t := range tt {
+ if v.s.addFileRef(t.fd, -1) == 0 {
+ v.s.tops.remove(t)
+ }
+ }
+ }
+
+ v.released = true
+}
+
+func (v *version) release() {
+ v.s.vmu.Lock()
+ v.releaseNB()
+ v.s.vmu.Unlock()
+}
+
+func (v *version) walkOverlapping(aux tFiles, ikey internalKey, f func(level int, t *tFile) bool, lf func(level int) bool) {
+ ukey := ikey.ukey()
+
+ // Aux level.
+ if aux != nil {
+ for _, t := range aux {
+ if t.overlaps(v.s.icmp, ukey, ukey) {
+ if !f(-1, t) {
+ return
+ }
+ }
+ }
+
+ if lf != nil && !lf(-1) {
+ return
+ }
+ }
+
+ // Walk tables level-by-level.
+ for level, tables := range v.levels {
+ if len(tables) == 0 {
+ continue
+ }
+
+ if level == 0 {
+ // Level-0 files may overlap each other. Find all files that
+ // overlap ukey.
+ for _, t := range tables {
+ if t.overlaps(v.s.icmp, ukey, ukey) {
+ if !f(level, t) {
+ return
+ }
+ }
+ }
+ } else {
+ if i := tables.searchMax(v.s.icmp, ikey); i < len(tables) {
+ t := tables[i]
+ if v.s.icmp.uCompare(ukey, t.imin.ukey()) >= 0 {
+ if !f(level, t) {
+ return
+ }
+ }
+ }
+ }
+
+ if lf != nil && !lf(level) {
+ return
+ }
+ }
+}
+
+func (v *version) get(aux tFiles, ikey internalKey, ro *opt.ReadOptions, noValue bool) (value []byte, tcomp bool, err error) {
+ if v.closing {
+ return nil, false, ErrClosed
+ }
+
+ ukey := ikey.ukey()
+
+ var (
+ tset *tSet
+ tseek bool
+
+ // Level-0.
+ zfound bool
+ zseq uint64
+ zkt keyType
+ zval []byte
+ )
+
+ err = ErrNotFound
+
+ // Since entries never hop across level, finding key/value
+ // in smaller level make later levels irrelevant.
+ v.walkOverlapping(aux, ikey, func(level int, t *tFile) bool {
+ if level >= 0 && !tseek {
+ if tset == nil {
+ tset = &tSet{level, t}
+ } else {
+ tseek = true
+ }
+ }
+
+ var (
+ fikey, fval []byte
+ ferr error
+ )
+ if noValue {
+ fikey, ferr = v.s.tops.findKey(t, ikey, ro)
+ } else {
+ fikey, fval, ferr = v.s.tops.find(t, ikey, ro)
+ }
+
+ switch ferr {
+ case nil:
+ case ErrNotFound:
+ return true
+ default:
+ err = ferr
+ return false
+ }
+
+ if fukey, fseq, fkt, fkerr := parseInternalKey(fikey); fkerr == nil {
+ if v.s.icmp.uCompare(ukey, fukey) == 0 {
+ // Level <= 0 may overlaps each-other.
+ if level <= 0 {
+ if fseq >= zseq {
+ zfound = true
+ zseq = fseq
+ zkt = fkt
+ zval = fval
+ }
+ } else {
+ switch fkt {
+ case keyTypeVal:
+ value = fval
+ err = nil
+ case keyTypeDel:
+ default:
+ panic("leveldb: invalid internalKey type")
+ }
+ return false
+ }
+ }
+ } else {
+ err = fkerr
+ return false
+ }
+
+ return true
+ }, func(level int) bool {
+ if zfound {
+ switch zkt {
+ case keyTypeVal:
+ value = zval
+ err = nil
+ case keyTypeDel:
+ default:
+ panic("leveldb: invalid internalKey type")
+ }
+ return false
+ }
+
+ return true
+ })
+
+ if tseek && tset.table.consumeSeek() <= 0 {
+ tcomp = atomic.CompareAndSwapPointer(&v.cSeek, nil, unsafe.Pointer(tset))
+ }
+
+ return
+}
+
+func (v *version) sampleSeek(ikey internalKey) (tcomp bool) {
+ var tset *tSet
+
+ v.walkOverlapping(nil, ikey, func(level int, t *tFile) bool {
+ if tset == nil {
+ tset = &tSet{level, t}
+ return true
+ }
+ if tset.table.consumeSeek() <= 0 {
+ tcomp = atomic.CompareAndSwapPointer(&v.cSeek, nil, unsafe.Pointer(tset))
+ }
+ return false
+ }, nil)
+
+ return
+}
+
+func (v *version) getIterators(slice *util.Range, ro *opt.ReadOptions) (its []iterator.Iterator) {
+ strict := opt.GetStrict(v.s.o.Options, ro, opt.StrictReader)
+ for level, tables := range v.levels {
+ if level == 0 {
+ // Merge all level zero files together since they may overlap.
+ for _, t := range tables {
+ its = append(its, v.s.tops.newIterator(t, slice, ro))
+ }
+ } else if len(tables) != 0 {
+ its = append(its, iterator.NewIndexedIterator(tables.newIndexIterator(v.s.tops, v.s.icmp, slice, ro), strict))
+ }
+ }
+ return
+}
+
+func (v *version) newStaging() *versionStaging {
+ return &versionStaging{base: v}
+}
+
+// Spawn a new version based on this version.
+func (v *version) spawn(r *sessionRecord) *version {
+ staging := v.newStaging()
+ staging.commit(r)
+ return staging.finish()
+}
+
+func (v *version) fillRecord(r *sessionRecord) {
+ for level, tables := range v.levels {
+ for _, t := range tables {
+ r.addTableFile(level, t)
+ }
+ }
+}
+
+func (v *version) tLen(level int) int {
+ if level < len(v.levels) {
+ return len(v.levels[level])
+ }
+ return 0
+}
+
+func (v *version) offsetOf(ikey internalKey) (n int64, err error) {
+ for level, tables := range v.levels {
+ for _, t := range tables {
+ if v.s.icmp.Compare(t.imax, ikey) <= 0 {
+ // Entire file is before "ikey", so just add the file size
+ n += t.size
+ } else if v.s.icmp.Compare(t.imin, ikey) > 0 {
+ // Entire file is after "ikey", so ignore
+ if level > 0 {
+ // Files other than level 0 are sorted by meta->min, so
+ // no further files in this level will contain data for
+ // "ikey".
+ break
+ }
+ } else {
+ // "ikey" falls in the range for this table. Add the
+ // approximate offset of "ikey" within the table.
+ if m, err := v.s.tops.offsetOf(t, ikey); err == nil {
+ n += m
+ } else {
+ return 0, err
+ }
+ }
+ }
+ }
+
+ return
+}
+
+func (v *version) pickMemdbLevel(umin, umax []byte, maxLevel int) (level int) {
+ if maxLevel > 0 {
+ if len(v.levels) == 0 {
+ return maxLevel
+ }
+ if !v.levels[0].overlaps(v.s.icmp, umin, umax, true) {
+ var overlaps tFiles
+ for ; level < maxLevel; level++ {
+ if pLevel := level + 1; pLevel >= len(v.levels) {
+ return maxLevel
+ } else if v.levels[pLevel].overlaps(v.s.icmp, umin, umax, false) {
+ break
+ }
+ if gpLevel := level + 2; gpLevel < len(v.levels) {
+ overlaps = v.levels[gpLevel].getOverlaps(overlaps, v.s.icmp, umin, umax, false)
+ if overlaps.size() > int64(v.s.o.GetCompactionGPOverlaps(level)) {
+ break
+ }
+ }
+ }
+ }
+ }
+ return
+}
+
+func (v *version) computeCompaction() {
+ // Precomputed best level for next compaction
+ bestLevel := int(-1)
+ bestScore := float64(-1)
+
+ statFiles := make([]int, len(v.levels))
+ statSizes := make([]string, len(v.levels))
+ statScore := make([]string, len(v.levels))
+ statTotSize := int64(0)
+
+ for level, tables := range v.levels {
+ var score float64
+ size := tables.size()
+ if level == 0 {
+ // We treat level-0 specially by bounding the number of files
+ // instead of number of bytes for two reasons:
+ //
+ // (1) With larger write-buffer sizes, it is nice not to do too
+ // many level-0 compaction.
+ //
+ // (2) The files in level-0 are merged on every read and
+ // therefore we wish to avoid too many files when the individual
+ // file size is small (perhaps because of a small write-buffer
+ // setting, or very high compression ratios, or lots of
+ // overwrites/deletions).
+ score = float64(len(tables)) / float64(v.s.o.GetCompactionL0Trigger())
+ } else {
+ score = float64(size) / float64(v.s.o.GetCompactionTotalSize(level))
+ }
+
+ if score > bestScore {
+ bestLevel = level
+ bestScore = score
+ }
+
+ statFiles[level] = len(tables)
+ statSizes[level] = shortenb(int(size))
+ statScore[level] = fmt.Sprintf("%.2f", score)
+ statTotSize += size
+ }
+
+ v.cLevel = bestLevel
+ v.cScore = bestScore
+
+ v.s.logf("version@stat F·%v S·%s%v Sc·%v", statFiles, shortenb(int(statTotSize)), statSizes, statScore)
+}
+
+func (v *version) needCompaction() bool {
+ return v.cScore >= 1 || atomic.LoadPointer(&v.cSeek) != nil
+}
+
+type tablesScratch struct {
+ added map[int64]atRecord
+ deleted map[int64]struct{}
+}
+
+type versionStaging struct {
+ base *version
+ levels []tablesScratch
+}
+
+func (p *versionStaging) getScratch(level int) *tablesScratch {
+ if level >= len(p.levels) {
+ newLevels := make([]tablesScratch, level+1)
+ copy(newLevels, p.levels)
+ p.levels = newLevels
+ }
+ return &(p.levels[level])
+}
+
+func (p *versionStaging) commit(r *sessionRecord) {
+ // Deleted tables.
+ for _, r := range r.deletedTables {
+ scratch := p.getScratch(r.level)
+ if r.level < len(p.base.levels) && len(p.base.levels[r.level]) > 0 {
+ if scratch.deleted == nil {
+ scratch.deleted = make(map[int64]struct{})
+ }
+ scratch.deleted[r.num] = struct{}{}
+ }
+ if scratch.added != nil {
+ delete(scratch.added, r.num)
+ }
+ }
+
+ // New tables.
+ for _, r := range r.addedTables {
+ scratch := p.getScratch(r.level)
+ if scratch.added == nil {
+ scratch.added = make(map[int64]atRecord)
+ }
+ scratch.added[r.num] = r
+ if scratch.deleted != nil {
+ delete(scratch.deleted, r.num)
+ }
+ }
+}
+
+func (p *versionStaging) finish() *version {
+ // Build new version.
+ nv := newVersion(p.base.s)
+ numLevel := len(p.levels)
+ if len(p.base.levels) > numLevel {
+ numLevel = len(p.base.levels)
+ }
+ nv.levels = make([]tFiles, numLevel)
+ for level := 0; level < numLevel; level++ {
+ var baseTabels tFiles
+ if level < len(p.base.levels) {
+ baseTabels = p.base.levels[level]
+ }
+
+ if level < len(p.levels) {
+ scratch := p.levels[level]
+
+ var nt tFiles
+ // Prealloc list if possible.
+ if n := len(baseTabels) + len(scratch.added) - len(scratch.deleted); n > 0 {
+ nt = make(tFiles, 0, n)
+ }
+
+ // Base tables.
+ for _, t := range baseTabels {
+ if _, ok := scratch.deleted[t.fd.Num]; ok {
+ continue
+ }
+ if _, ok := scratch.added[t.fd.Num]; ok {
+ continue
+ }
+ nt = append(nt, t)
+ }
+
+ // New tables.
+ for _, r := range scratch.added {
+ nt = append(nt, tableFileFromRecord(r))
+ }
+
+ if len(nt) != 0 {
+ // Sort tables.
+ if level == 0 {
+ nt.sortByNum()
+ } else {
+ nt.sortByKey(p.base.s.icmp)
+ }
+
+ nv.levels[level] = nt
+ }
+ } else {
+ nv.levels[level] = baseTabels
+ }
+ }
+
+ // Trim levels.
+ n := len(nv.levels)
+ for ; n > 0 && nv.levels[n-1] == nil; n-- {
+ }
+ nv.levels = nv.levels[:n]
+
+ // Compute compaction score for new version.
+ nv.computeCompaction()
+
+ return nv
+}
+
+type versionReleaser struct {
+ v *version
+ once bool
+}
+
+func (vr *versionReleaser) Release() {
+ v := vr.v
+ v.s.vmu.Lock()
+ if !vr.once {
+ v.releaseNB()
+ vr.once = true
+ }
+ v.s.vmu.Unlock()
+}
diff --git a/vendor/golang.org/x/crypto/AUTHORS b/vendor/golang.org/x/crypto/AUTHORS
new file mode 100644
index 0000000..2b00ddb
--- /dev/null
+++ b/vendor/golang.org/x/crypto/AUTHORS
@@ -0,0 +1,3 @@
+# This source code refers to The Go Authors for copyright purposes.
+# The master list of authors is in the main Go distribution,
+# visible at https://tip.golang.org/AUTHORS.
diff --git a/vendor/golang.org/x/crypto/CONTRIBUTORS b/vendor/golang.org/x/crypto/CONTRIBUTORS
new file mode 100644
index 0000000..1fbd3e9
--- /dev/null
+++ b/vendor/golang.org/x/crypto/CONTRIBUTORS
@@ -0,0 +1,3 @@
+# This source code was written by the Go contributors.
+# The master list of contributors is in the main Go distribution,
+# visible at https://tip.golang.org/CONTRIBUTORS.
diff --git a/vendor/golang.org/x/crypto/LICENSE b/vendor/golang.org/x/crypto/LICENSE
new file mode 100644
index 0000000..6a66aea
--- /dev/null
+++ b/vendor/golang.org/x/crypto/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+ * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/golang.org/x/crypto/PATENTS b/vendor/golang.org/x/crypto/PATENTS
new file mode 100644
index 0000000..7330990
--- /dev/null
+++ b/vendor/golang.org/x/crypto/PATENTS
@@ -0,0 +1,22 @@
+Additional IP Rights Grant (Patents)
+
+"This implementation" means the copyrightable works distributed by
+Google as part of the Go project.
+
+Google hereby grants to You a perpetual, worldwide, non-exclusive,
+no-charge, royalty-free, irrevocable (except as stated in this section)
+patent license to make, have made, use, offer to sell, sell, import,
+transfer and otherwise run, modify and propagate the contents of this
+implementation of Go, where such license applies only to those patent
+claims, both currently owned or controlled by Google and acquired in
+the future, licensable by Google that are necessarily infringed by this
+implementation of Go. This grant does not include claims that would be
+infringed only as a consequence of further modification of this
+implementation. If you or your agent or exclusive licensee institute or
+order or agree to the institution of patent litigation against any
+entity (including a cross-claim or counterclaim in a lawsuit) alleging
+that this implementation of Go or any code incorporated within this
+implementation of Go constitutes direct or contributory patent
+infringement, or inducement of patent infringement, then any patent
+rights granted to you under this License for this implementation of Go
+shall terminate as of the date such litigation is filed.
diff --git a/vendor/golang.org/x/crypto/ed25519/ed25519.go b/vendor/golang.org/x/crypto/ed25519/ed25519.go
new file mode 100644
index 0000000..c7f8c7e
--- /dev/null
+++ b/vendor/golang.org/x/crypto/ed25519/ed25519.go
@@ -0,0 +1,222 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// In Go 1.13, the ed25519 package was promoted to the standard library as
+// crypto/ed25519, and this package became a wrapper for the standard library one.
+//
+// +build !go1.13
+
+// Package ed25519 implements the Ed25519 signature algorithm. See
+// https://ed25519.cr.yp.to/.
+//
+// These functions are also compatible with the “Ed25519” function defined in
+// RFC 8032. However, unlike RFC 8032's formulation, this package's private key
+// representation includes a public key suffix to make multiple signing
+// operations with the same key more efficient. This package refers to the RFC
+// 8032 private key as the “seed”.
+package ed25519
+
+// This code is a port of the public domain, “ref10” implementation of ed25519
+// from SUPERCOP.
+
+import (
+ "bytes"
+ "crypto"
+ cryptorand "crypto/rand"
+ "crypto/sha512"
+ "errors"
+ "io"
+ "strconv"
+
+ "golang.org/x/crypto/ed25519/internal/edwards25519"
+)
+
+const (
+ // PublicKeySize is the size, in bytes, of public keys as used in this package.
+ PublicKeySize = 32
+ // PrivateKeySize is the size, in bytes, of private keys as used in this package.
+ PrivateKeySize = 64
+ // SignatureSize is the size, in bytes, of signatures generated and verified by this package.
+ SignatureSize = 64
+ // SeedSize is the size, in bytes, of private key seeds. These are the private key representations used by RFC 8032.
+ SeedSize = 32
+)
+
+// PublicKey is the type of Ed25519 public keys.
+type PublicKey []byte
+
+// PrivateKey is the type of Ed25519 private keys. It implements crypto.Signer.
+type PrivateKey []byte
+
+// Public returns the PublicKey corresponding to priv.
+func (priv PrivateKey) Public() crypto.PublicKey {
+ publicKey := make([]byte, PublicKeySize)
+ copy(publicKey, priv[32:])
+ return PublicKey(publicKey)
+}
+
+// Seed returns the private key seed corresponding to priv. It is provided for
+// interoperability with RFC 8032. RFC 8032's private keys correspond to seeds
+// in this package.
+func (priv PrivateKey) Seed() []byte {
+ seed := make([]byte, SeedSize)
+ copy(seed, priv[:32])
+ return seed
+}
+
+// Sign signs the given message with priv.
+// Ed25519 performs two passes over messages to be signed and therefore cannot
+// handle pre-hashed messages. Thus opts.HashFunc() must return zero to
+// indicate the message hasn't been hashed. This can be achieved by passing
+// crypto.Hash(0) as the value for opts.
+func (priv PrivateKey) Sign(rand io.Reader, message []byte, opts crypto.SignerOpts) (signature []byte, err error) {
+ if opts.HashFunc() != crypto.Hash(0) {
+ return nil, errors.New("ed25519: cannot sign hashed message")
+ }
+
+ return Sign(priv, message), nil
+}
+
+// GenerateKey generates a public/private key pair using entropy from rand.
+// If rand is nil, crypto/rand.Reader will be used.
+func GenerateKey(rand io.Reader) (PublicKey, PrivateKey, error) {
+ if rand == nil {
+ rand = cryptorand.Reader
+ }
+
+ seed := make([]byte, SeedSize)
+ if _, err := io.ReadFull(rand, seed); err != nil {
+ return nil, nil, err
+ }
+
+ privateKey := NewKeyFromSeed(seed)
+ publicKey := make([]byte, PublicKeySize)
+ copy(publicKey, privateKey[32:])
+
+ return publicKey, privateKey, nil
+}
+
+// NewKeyFromSeed calculates a private key from a seed. It will panic if
+// len(seed) is not SeedSize. This function is provided for interoperability
+// with RFC 8032. RFC 8032's private keys correspond to seeds in this
+// package.
+func NewKeyFromSeed(seed []byte) PrivateKey {
+ if l := len(seed); l != SeedSize {
+ panic("ed25519: bad seed length: " + strconv.Itoa(l))
+ }
+
+ digest := sha512.Sum512(seed)
+ digest[0] &= 248
+ digest[31] &= 127
+ digest[31] |= 64
+
+ var A edwards25519.ExtendedGroupElement
+ var hBytes [32]byte
+ copy(hBytes[:], digest[:])
+ edwards25519.GeScalarMultBase(&A, &hBytes)
+ var publicKeyBytes [32]byte
+ A.ToBytes(&publicKeyBytes)
+
+ privateKey := make([]byte, PrivateKeySize)
+ copy(privateKey, seed)
+ copy(privateKey[32:], publicKeyBytes[:])
+
+ return privateKey
+}
+
+// Sign signs the message with privateKey and returns a signature. It will
+// panic if len(privateKey) is not PrivateKeySize.
+func Sign(privateKey PrivateKey, message []byte) []byte {
+ if l := len(privateKey); l != PrivateKeySize {
+ panic("ed25519: bad private key length: " + strconv.Itoa(l))
+ }
+
+ h := sha512.New()
+ h.Write(privateKey[:32])
+
+ var digest1, messageDigest, hramDigest [64]byte
+ var expandedSecretKey [32]byte
+ h.Sum(digest1[:0])
+ copy(expandedSecretKey[:], digest1[:])
+ expandedSecretKey[0] &= 248
+ expandedSecretKey[31] &= 63
+ expandedSecretKey[31] |= 64
+
+ h.Reset()
+ h.Write(digest1[32:])
+ h.Write(message)
+ h.Sum(messageDigest[:0])
+
+ var messageDigestReduced [32]byte
+ edwards25519.ScReduce(&messageDigestReduced, &messageDigest)
+ var R edwards25519.ExtendedGroupElement
+ edwards25519.GeScalarMultBase(&R, &messageDigestReduced)
+
+ var encodedR [32]byte
+ R.ToBytes(&encodedR)
+
+ h.Reset()
+ h.Write(encodedR[:])
+ h.Write(privateKey[32:])
+ h.Write(message)
+ h.Sum(hramDigest[:0])
+ var hramDigestReduced [32]byte
+ edwards25519.ScReduce(&hramDigestReduced, &hramDigest)
+
+ var s [32]byte
+ edwards25519.ScMulAdd(&s, &hramDigestReduced, &expandedSecretKey, &messageDigestReduced)
+
+ signature := make([]byte, SignatureSize)
+ copy(signature[:], encodedR[:])
+ copy(signature[32:], s[:])
+
+ return signature
+}
+
+// Verify reports whether sig is a valid signature of message by publicKey. It
+// will panic if len(publicKey) is not PublicKeySize.
+func Verify(publicKey PublicKey, message, sig []byte) bool {
+ if l := len(publicKey); l != PublicKeySize {
+ panic("ed25519: bad public key length: " + strconv.Itoa(l))
+ }
+
+ if len(sig) != SignatureSize || sig[63]&224 != 0 {
+ return false
+ }
+
+ var A edwards25519.ExtendedGroupElement
+ var publicKeyBytes [32]byte
+ copy(publicKeyBytes[:], publicKey)
+ if !A.FromBytes(&publicKeyBytes) {
+ return false
+ }
+ edwards25519.FeNeg(&A.X, &A.X)
+ edwards25519.FeNeg(&A.T, &A.T)
+
+ h := sha512.New()
+ h.Write(sig[:32])
+ h.Write(publicKey[:])
+ h.Write(message)
+ var digest [64]byte
+ h.Sum(digest[:0])
+
+ var hReduced [32]byte
+ edwards25519.ScReduce(&hReduced, &digest)
+
+ var R edwards25519.ProjectiveGroupElement
+ var s [32]byte
+ copy(s[:], sig[32:])
+
+ // https://tools.ietf.org/html/rfc8032#section-5.1.7 requires that s be in
+ // the range [0, order) in order to prevent signature malleability.
+ if !edwards25519.ScMinimal(&s) {
+ return false
+ }
+
+ edwards25519.GeDoubleScalarMultVartime(&R, &hReduced, &A, &s)
+
+ var checkR [32]byte
+ R.ToBytes(&checkR)
+ return bytes.Equal(sig[:32], checkR[:])
+}
diff --git a/vendor/golang.org/x/crypto/ed25519/ed25519_go113.go b/vendor/golang.org/x/crypto/ed25519/ed25519_go113.go
new file mode 100644
index 0000000..d1448d8
--- /dev/null
+++ b/vendor/golang.org/x/crypto/ed25519/ed25519_go113.go
@@ -0,0 +1,73 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build go1.13
+
+// Package ed25519 implements the Ed25519 signature algorithm. See
+// https://ed25519.cr.yp.to/.
+//
+// These functions are also compatible with the “Ed25519” function defined in
+// RFC 8032. However, unlike RFC 8032's formulation, this package's private key
+// representation includes a public key suffix to make multiple signing
+// operations with the same key more efficient. This package refers to the RFC
+// 8032 private key as the “seed”.
+//
+// Beginning with Go 1.13, the functionality of this package was moved to the
+// standard library as crypto/ed25519. This package only acts as a compatibility
+// wrapper.
+package ed25519
+
+import (
+ "crypto/ed25519"
+ "io"
+)
+
+const (
+ // PublicKeySize is the size, in bytes, of public keys as used in this package.
+ PublicKeySize = 32
+ // PrivateKeySize is the size, in bytes, of private keys as used in this package.
+ PrivateKeySize = 64
+ // SignatureSize is the size, in bytes, of signatures generated and verified by this package.
+ SignatureSize = 64
+ // SeedSize is the size, in bytes, of private key seeds. These are the private key representations used by RFC 8032.
+ SeedSize = 32
+)
+
+// PublicKey is the type of Ed25519 public keys.
+//
+// This type is an alias for crypto/ed25519's PublicKey type.
+// See the crypto/ed25519 package for the methods on this type.
+type PublicKey = ed25519.PublicKey
+
+// PrivateKey is the type of Ed25519 private keys. It implements crypto.Signer.
+//
+// This type is an alias for crypto/ed25519's PrivateKey type.
+// See the crypto/ed25519 package for the methods on this type.
+type PrivateKey = ed25519.PrivateKey
+
+// GenerateKey generates a public/private key pair using entropy from rand.
+// If rand is nil, crypto/rand.Reader will be used.
+func GenerateKey(rand io.Reader) (PublicKey, PrivateKey, error) {
+ return ed25519.GenerateKey(rand)
+}
+
+// NewKeyFromSeed calculates a private key from a seed. It will panic if
+// len(seed) is not SeedSize. This function is provided for interoperability
+// with RFC 8032. RFC 8032's private keys correspond to seeds in this
+// package.
+func NewKeyFromSeed(seed []byte) PrivateKey {
+ return ed25519.NewKeyFromSeed(seed)
+}
+
+// Sign signs the message with privateKey and returns a signature. It will
+// panic if len(privateKey) is not PrivateKeySize.
+func Sign(privateKey PrivateKey, message []byte) []byte {
+ return ed25519.Sign(privateKey, message)
+}
+
+// Verify reports whether sig is a valid signature of message by publicKey. It
+// will panic if len(publicKey) is not PublicKeySize.
+func Verify(publicKey PublicKey, message, sig []byte) bool {
+ return ed25519.Verify(publicKey, message, sig)
+}
diff --git a/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go b/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go
new file mode 100644
index 0000000..e39f086
--- /dev/null
+++ b/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/const.go
@@ -0,0 +1,1422 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package edwards25519
+
+// These values are from the public domain, “ref10” implementation of ed25519
+// from SUPERCOP.
+
+// d is a constant in the Edwards curve equation.
+var d = FieldElement{
+ -10913610, 13857413, -15372611, 6949391, 114729, -8787816, -6275908, -3247719, -18696448, -12055116,
+}
+
+// d2 is 2*d.
+var d2 = FieldElement{
+ -21827239, -5839606, -30745221, 13898782, 229458, 15978800, -12551817, -6495438, 29715968, 9444199,
+}
+
+// SqrtM1 is the square-root of -1 in the field.
+var SqrtM1 = FieldElement{
+ -32595792, -7943725, 9377950, 3500415, 12389472, -272473, -25146209, -2005654, 326686, 11406482,
+}
+
+// A is a constant in the Montgomery-form of curve25519.
+var A = FieldElement{
+ 486662, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+}
+
+// bi contains precomputed multiples of the base-point. See the Ed25519 paper
+// for a discussion about how these values are used.
+var bi = [8]PreComputedGroupElement{
+ {
+ FieldElement{25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605},
+ FieldElement{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378},
+ FieldElement{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546},
+ },
+ {
+ FieldElement{15636291, -9688557, 24204773, -7912398, 616977, -16685262, 27787600, -14772189, 28944400, -1550024},
+ FieldElement{16568933, 4717097, -11556148, -1102322, 15682896, -11807043, 16354577, -11775962, 7689662, 11199574},
+ FieldElement{30464156, -5976125, -11779434, -15670865, 23220365, 15915852, 7512774, 10017326, -17749093, -9920357},
+ },
+ {
+ FieldElement{10861363, 11473154, 27284546, 1981175, -30064349, 12577861, 32867885, 14515107, -15438304, 10819380},
+ FieldElement{4708026, 6336745, 20377586, 9066809, -11272109, 6594696, -25653668, 12483688, -12668491, 5581306},
+ FieldElement{19563160, 16186464, -29386857, 4097519, 10237984, -4348115, 28542350, 13850243, -23678021, -15815942},
+ },
+ {
+ FieldElement{5153746, 9909285, 1723747, -2777874, 30523605, 5516873, 19480852, 5230134, -23952439, -15175766},
+ FieldElement{-30269007, -3463509, 7665486, 10083793, 28475525, 1649722, 20654025, 16520125, 30598449, 7715701},
+ FieldElement{28881845, 14381568, 9657904, 3680757, -20181635, 7843316, -31400660, 1370708, 29794553, -1409300},
+ },
+ {
+ FieldElement{-22518993, -6692182, 14201702, -8745502, -23510406, 8844726, 18474211, -1361450, -13062696, 13821877},
+ FieldElement{-6455177, -7839871, 3374702, -4740862, -27098617, -10571707, 31655028, -7212327, 18853322, -14220951},
+ FieldElement{4566830, -12963868, -28974889, -12240689, -7602672, -2830569, -8514358, -10431137, 2207753, -3209784},
+ },
+ {
+ FieldElement{-25154831, -4185821, 29681144, 7868801, -6854661, -9423865, -12437364, -663000, -31111463, -16132436},
+ FieldElement{25576264, -2703214, 7349804, -11814844, 16472782, 9300885, 3844789, 15725684, 171356, 6466918},
+ FieldElement{23103977, 13316479, 9739013, -16149481, 817875, -15038942, 8965339, -14088058, -30714912, 16193877},
+ },
+ {
+ FieldElement{-33521811, 3180713, -2394130, 14003687, -16903474, -16270840, 17238398, 4729455, -18074513, 9256800},
+ FieldElement{-25182317, -4174131, 32336398, 5036987, -21236817, 11360617, 22616405, 9761698, -19827198, 630305},
+ FieldElement{-13720693, 2639453, -24237460, -7406481, 9494427, -5774029, -6554551, -15960994, -2449256, -14291300},
+ },
+ {
+ FieldElement{-3151181, -5046075, 9282714, 6866145, -31907062, -863023, -18940575, 15033784, 25105118, -7894876},
+ FieldElement{-24326370, 15950226, -31801215, -14592823, -11662737, -5090925, 1573892, -2625887, 2198790, -15804619},
+ FieldElement{-3099351, 10324967, -2241613, 7453183, -5446979, -2735503, -13812022, -16236442, -32461234, -12290683},
+ },
+}
+
+// base contains precomputed multiples of the base-point. See the Ed25519 paper
+// for a discussion about how these values are used.
+var base = [32][8]PreComputedGroupElement{
+ {
+ {
+ FieldElement{25967493, -14356035, 29566456, 3660896, -12694345, 4014787, 27544626, -11754271, -6079156, 2047605},
+ FieldElement{-12545711, 934262, -2722910, 3049990, -727428, 9406986, 12720692, 5043384, 19500929, -15469378},
+ FieldElement{-8738181, 4489570, 9688441, -14785194, 10184609, -12363380, 29287919, 11864899, -24514362, -4438546},
+ },
+ {
+ FieldElement{-12815894, -12976347, -21581243, 11784320, -25355658, -2750717, -11717903, -3814571, -358445, -10211303},
+ FieldElement{-21703237, 6903825, 27185491, 6451973, -29577724, -9554005, -15616551, 11189268, -26829678, -5319081},
+ FieldElement{26966642, 11152617, 32442495, 15396054, 14353839, -12752335, -3128826, -9541118, -15472047, -4166697},
+ },
+ {
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+ },
+ {
+ FieldElement{-20045281, 5454097, -14346548, 6447146, 28862071, 1883651, -2469266, -4141880, 7770569, 9620597},
+ FieldElement{23208068, 7979712, 33071466, 8149229, 1758231, -10834995, 30945528, -1694323, -33502340, -14767970},
+ FieldElement{1439958, -16270480, -1079989, -793782, 4625402, 10647766, -5043801, 1220118, 30494170, -11440799},
+ },
+ {
+ FieldElement{-5037580, -13028295, -2970559, -3061767, 15640974, -6701666, -26739026, 926050, -1684339, -13333647},
+ FieldElement{13908495, -3549272, 30919928, -6273825, -21521863, 7989039, 9021034, 9078865, 3353509, 4033511},
+ FieldElement{-29663431, -15113610, 32259991, -344482, 24295849, -12912123, 23161163, 8839127, 27485041, 7356032},
+ },
+ },
+ {
+ {
+ FieldElement{9661027, 705443, 11980065, -5370154, -1628543, 14661173, -6346142, 2625015, 28431036, -16771834},
+ FieldElement{-23839233, -8311415, -25945511, 7480958, -17681669, -8354183, -22545972, 14150565, 15970762, 4099461},
+ FieldElement{29262576, 16756590, 26350592, -8793563, 8529671, -11208050, 13617293, -9937143, 11465739, 8317062},
+ },
+ {
+ FieldElement{-25493081, -6962928, 32500200, -9419051, -23038724, -2302222, 14898637, 3848455, 20969334, -5157516},
+ FieldElement{-20384450, -14347713, -18336405, 13884722, -33039454, 2842114, -21610826, -3649888, 11177095, 14989547},
+ FieldElement{-24496721, -11716016, 16959896, 2278463, 12066309, 10137771, 13515641, 2581286, -28487508, 9930240},
+ },
+ {
+ FieldElement{-17751622, -2097826, 16544300, -13009300, -15914807, -14949081, 18345767, -13403753, 16291481, -5314038},
+ FieldElement{-33229194, 2553288, 32678213, 9875984, 8534129, 6889387, -9676774, 6957617, 4368891, 9788741},
+ FieldElement{16660756, 7281060, -10830758, 12911820, 20108584, -8101676, -21722536, -8613148, 16250552, -11111103},
+ },
+ {
+ FieldElement{-19765507, 2390526, -16551031, 14161980, 1905286, 6414907, 4689584, 10604807, -30190403, 4782747},
+ FieldElement{-1354539, 14736941, -7367442, -13292886, 7710542, -14155590, -9981571, 4383045, 22546403, 437323},
+ FieldElement{31665577, -12180464, -16186830, 1491339, -18368625, 3294682, 27343084, 2786261, -30633590, -14097016},
+ },
+ {
+ FieldElement{-14467279, -683715, -33374107, 7448552, 19294360, 14334329, -19690631, 2355319, -19284671, -6114373},
+ FieldElement{15121312, -15796162, 6377020, -6031361, -10798111, -12957845, 18952177, 15496498, -29380133, 11754228},
+ FieldElement{-2637277, -13483075, 8488727, -14303896, 12728761, -1622493, 7141596, 11724556, 22761615, -10134141},
+ },
+ {
+ FieldElement{16918416, 11729663, -18083579, 3022987, -31015732, -13339659, -28741185, -12227393, 32851222, 11717399},
+ FieldElement{11166634, 7338049, -6722523, 4531520, -29468672, -7302055, 31474879, 3483633, -1193175, -4030831},
+ FieldElement{-185635, 9921305, 31456609, -13536438, -12013818, 13348923, 33142652, 6546660, -19985279, -3948376},
+ },
+ {
+ FieldElement{-32460596, 11266712, -11197107, -7899103, 31703694, 3855903, -8537131, -12833048, -30772034, -15486313},
+ FieldElement{-18006477, 12709068, 3991746, -6479188, -21491523, -10550425, -31135347, -16049879, 10928917, 3011958},
+ FieldElement{-6957757, -15594337, 31696059, 334240, 29576716, 14796075, -30831056, -12805180, 18008031, 10258577},
+ },
+ {
+ FieldElement{-22448644, 15655569, 7018479, -4410003, -30314266, -1201591, -1853465, 1367120, 25127874, 6671743},
+ FieldElement{29701166, -14373934, -10878120, 9279288, -17568, 13127210, 21382910, 11042292, 25838796, 4642684},
+ FieldElement{-20430234, 14955537, -24126347, 8124619, -5369288, -5990470, 30468147, -13900640, 18423289, 4177476},
+ },
+ },
+}
diff --git a/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go b/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go
new file mode 100644
index 0000000..fd03c25
--- /dev/null
+++ b/vendor/golang.org/x/crypto/ed25519/internal/edwards25519/edwards25519.go
@@ -0,0 +1,1793 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package edwards25519
+
+import "encoding/binary"
+
+// This code is a port of the public domain, “ref10” implementation of ed25519
+// from SUPERCOP.
+
+// FieldElement represents an element of the field GF(2^255 - 19). An element
+// t, entries t[0]...t[9], represents the integer t[0]+2^26 t[1]+2^51 t[2]+2^77
+// t[3]+2^102 t[4]+...+2^230 t[9]. Bounds on each t[i] vary depending on
+// context.
+type FieldElement [10]int32
+
+var zero FieldElement
+
+func FeZero(fe *FieldElement) {
+ copy(fe[:], zero[:])
+}
+
+func FeOne(fe *FieldElement) {
+ FeZero(fe)
+ fe[0] = 1
+}
+
+func FeAdd(dst, a, b *FieldElement) {
+ dst[0] = a[0] + b[0]
+ dst[1] = a[1] + b[1]
+ dst[2] = a[2] + b[2]
+ dst[3] = a[3] + b[3]
+ dst[4] = a[4] + b[4]
+ dst[5] = a[5] + b[5]
+ dst[6] = a[6] + b[6]
+ dst[7] = a[7] + b[7]
+ dst[8] = a[8] + b[8]
+ dst[9] = a[9] + b[9]
+}
+
+func FeSub(dst, a, b *FieldElement) {
+ dst[0] = a[0] - b[0]
+ dst[1] = a[1] - b[1]
+ dst[2] = a[2] - b[2]
+ dst[3] = a[3] - b[3]
+ dst[4] = a[4] - b[4]
+ dst[5] = a[5] - b[5]
+ dst[6] = a[6] - b[6]
+ dst[7] = a[7] - b[7]
+ dst[8] = a[8] - b[8]
+ dst[9] = a[9] - b[9]
+}
+
+func FeCopy(dst, src *FieldElement) {
+ copy(dst[:], src[:])
+}
+
+// Replace (f,g) with (g,g) if b == 1;
+// replace (f,g) with (f,g) if b == 0.
+//
+// Preconditions: b in {0,1}.
+func FeCMove(f, g *FieldElement, b int32) {
+ b = -b
+ f[0] ^= b & (f[0] ^ g[0])
+ f[1] ^= b & (f[1] ^ g[1])
+ f[2] ^= b & (f[2] ^ g[2])
+ f[3] ^= b & (f[3] ^ g[3])
+ f[4] ^= b & (f[4] ^ g[4])
+ f[5] ^= b & (f[5] ^ g[5])
+ f[6] ^= b & (f[6] ^ g[6])
+ f[7] ^= b & (f[7] ^ g[7])
+ f[8] ^= b & (f[8] ^ g[8])
+ f[9] ^= b & (f[9] ^ g[9])
+}
+
+func load3(in []byte) int64 {
+ var r int64
+ r = int64(in[0])
+ r |= int64(in[1]) << 8
+ r |= int64(in[2]) << 16
+ return r
+}
+
+func load4(in []byte) int64 {
+ var r int64
+ r = int64(in[0])
+ r |= int64(in[1]) << 8
+ r |= int64(in[2]) << 16
+ r |= int64(in[3]) << 24
+ return r
+}
+
+func FeFromBytes(dst *FieldElement, src *[32]byte) {
+ h0 := load4(src[:])
+ h1 := load3(src[4:]) << 6
+ h2 := load3(src[7:]) << 5
+ h3 := load3(src[10:]) << 3
+ h4 := load3(src[13:]) << 2
+ h5 := load4(src[16:])
+ h6 := load3(src[20:]) << 7
+ h7 := load3(src[23:]) << 5
+ h8 := load3(src[26:]) << 4
+ h9 := (load3(src[29:]) & 8388607) << 2
+
+ FeCombine(dst, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
+}
+
+// FeToBytes marshals h to s.
+// Preconditions:
+// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+//
+// Write p=2^255-19; q=floor(h/p).
+// Basic claim: q = floor(2^(-255)(h + 19 2^(-25)h9 + 2^(-1))).
+//
+// Proof:
+// Have |h|<=p so |q|<=1 so |19^2 2^(-255) q|<1/4.
+// Also have |h-2^230 h9|<2^230 so |19 2^(-255)(h-2^230 h9)|<1/4.
+//
+// Write y=2^(-1)-19^2 2^(-255)q-19 2^(-255)(h-2^230 h9).
+// Then 0> 25
+ q = (h[0] + q) >> 26
+ q = (h[1] + q) >> 25
+ q = (h[2] + q) >> 26
+ q = (h[3] + q) >> 25
+ q = (h[4] + q) >> 26
+ q = (h[5] + q) >> 25
+ q = (h[6] + q) >> 26
+ q = (h[7] + q) >> 25
+ q = (h[8] + q) >> 26
+ q = (h[9] + q) >> 25
+
+ // Goal: Output h-(2^255-19)q, which is between 0 and 2^255-20.
+ h[0] += 19 * q
+ // Goal: Output h-2^255 q, which is between 0 and 2^255-20.
+
+ carry[0] = h[0] >> 26
+ h[1] += carry[0]
+ h[0] -= carry[0] << 26
+ carry[1] = h[1] >> 25
+ h[2] += carry[1]
+ h[1] -= carry[1] << 25
+ carry[2] = h[2] >> 26
+ h[3] += carry[2]
+ h[2] -= carry[2] << 26
+ carry[3] = h[3] >> 25
+ h[4] += carry[3]
+ h[3] -= carry[3] << 25
+ carry[4] = h[4] >> 26
+ h[5] += carry[4]
+ h[4] -= carry[4] << 26
+ carry[5] = h[5] >> 25
+ h[6] += carry[5]
+ h[5] -= carry[5] << 25
+ carry[6] = h[6] >> 26
+ h[7] += carry[6]
+ h[6] -= carry[6] << 26
+ carry[7] = h[7] >> 25
+ h[8] += carry[7]
+ h[7] -= carry[7] << 25
+ carry[8] = h[8] >> 26
+ h[9] += carry[8]
+ h[8] -= carry[8] << 26
+ carry[9] = h[9] >> 25
+ h[9] -= carry[9] << 25
+ // h10 = carry9
+
+ // Goal: Output h[0]+...+2^255 h10-2^255 q, which is between 0 and 2^255-20.
+ // Have h[0]+...+2^230 h[9] between 0 and 2^255-1;
+ // evidently 2^255 h10-2^255 q = 0.
+ // Goal: Output h[0]+...+2^230 h[9].
+
+ s[0] = byte(h[0] >> 0)
+ s[1] = byte(h[0] >> 8)
+ s[2] = byte(h[0] >> 16)
+ s[3] = byte((h[0] >> 24) | (h[1] << 2))
+ s[4] = byte(h[1] >> 6)
+ s[5] = byte(h[1] >> 14)
+ s[6] = byte((h[1] >> 22) | (h[2] << 3))
+ s[7] = byte(h[2] >> 5)
+ s[8] = byte(h[2] >> 13)
+ s[9] = byte((h[2] >> 21) | (h[3] << 5))
+ s[10] = byte(h[3] >> 3)
+ s[11] = byte(h[3] >> 11)
+ s[12] = byte((h[3] >> 19) | (h[4] << 6))
+ s[13] = byte(h[4] >> 2)
+ s[14] = byte(h[4] >> 10)
+ s[15] = byte(h[4] >> 18)
+ s[16] = byte(h[5] >> 0)
+ s[17] = byte(h[5] >> 8)
+ s[18] = byte(h[5] >> 16)
+ s[19] = byte((h[5] >> 24) | (h[6] << 1))
+ s[20] = byte(h[6] >> 7)
+ s[21] = byte(h[6] >> 15)
+ s[22] = byte((h[6] >> 23) | (h[7] << 3))
+ s[23] = byte(h[7] >> 5)
+ s[24] = byte(h[7] >> 13)
+ s[25] = byte((h[7] >> 21) | (h[8] << 4))
+ s[26] = byte(h[8] >> 4)
+ s[27] = byte(h[8] >> 12)
+ s[28] = byte((h[8] >> 20) | (h[9] << 6))
+ s[29] = byte(h[9] >> 2)
+ s[30] = byte(h[9] >> 10)
+ s[31] = byte(h[9] >> 18)
+}
+
+func FeIsNegative(f *FieldElement) byte {
+ var s [32]byte
+ FeToBytes(&s, f)
+ return s[0] & 1
+}
+
+func FeIsNonZero(f *FieldElement) int32 {
+ var s [32]byte
+ FeToBytes(&s, f)
+ var x uint8
+ for _, b := range s {
+ x |= b
+ }
+ x |= x >> 4
+ x |= x >> 2
+ x |= x >> 1
+ return int32(x & 1)
+}
+
+// FeNeg sets h = -f
+//
+// Preconditions:
+// |f| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+//
+// Postconditions:
+// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+func FeNeg(h, f *FieldElement) {
+ h[0] = -f[0]
+ h[1] = -f[1]
+ h[2] = -f[2]
+ h[3] = -f[3]
+ h[4] = -f[4]
+ h[5] = -f[5]
+ h[6] = -f[6]
+ h[7] = -f[7]
+ h[8] = -f[8]
+ h[9] = -f[9]
+}
+
+func FeCombine(h *FieldElement, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 int64) {
+ var c0, c1, c2, c3, c4, c5, c6, c7, c8, c9 int64
+
+ /*
+ |h0| <= (1.1*1.1*2^52*(1+19+19+19+19)+1.1*1.1*2^50*(38+38+38+38+38))
+ i.e. |h0| <= 1.2*2^59; narrower ranges for h2, h4, h6, h8
+ |h1| <= (1.1*1.1*2^51*(1+1+19+19+19+19+19+19+19+19))
+ i.e. |h1| <= 1.5*2^58; narrower ranges for h3, h5, h7, h9
+ */
+
+ c0 = (h0 + (1 << 25)) >> 26
+ h1 += c0
+ h0 -= c0 << 26
+ c4 = (h4 + (1 << 25)) >> 26
+ h5 += c4
+ h4 -= c4 << 26
+ /* |h0| <= 2^25 */
+ /* |h4| <= 2^25 */
+ /* |h1| <= 1.51*2^58 */
+ /* |h5| <= 1.51*2^58 */
+
+ c1 = (h1 + (1 << 24)) >> 25
+ h2 += c1
+ h1 -= c1 << 25
+ c5 = (h5 + (1 << 24)) >> 25
+ h6 += c5
+ h5 -= c5 << 25
+ /* |h1| <= 2^24; from now on fits into int32 */
+ /* |h5| <= 2^24; from now on fits into int32 */
+ /* |h2| <= 1.21*2^59 */
+ /* |h6| <= 1.21*2^59 */
+
+ c2 = (h2 + (1 << 25)) >> 26
+ h3 += c2
+ h2 -= c2 << 26
+ c6 = (h6 + (1 << 25)) >> 26
+ h7 += c6
+ h6 -= c6 << 26
+ /* |h2| <= 2^25; from now on fits into int32 unchanged */
+ /* |h6| <= 2^25; from now on fits into int32 unchanged */
+ /* |h3| <= 1.51*2^58 */
+ /* |h7| <= 1.51*2^58 */
+
+ c3 = (h3 + (1 << 24)) >> 25
+ h4 += c3
+ h3 -= c3 << 25
+ c7 = (h7 + (1 << 24)) >> 25
+ h8 += c7
+ h7 -= c7 << 25
+ /* |h3| <= 2^24; from now on fits into int32 unchanged */
+ /* |h7| <= 2^24; from now on fits into int32 unchanged */
+ /* |h4| <= 1.52*2^33 */
+ /* |h8| <= 1.52*2^33 */
+
+ c4 = (h4 + (1 << 25)) >> 26
+ h5 += c4
+ h4 -= c4 << 26
+ c8 = (h8 + (1 << 25)) >> 26
+ h9 += c8
+ h8 -= c8 << 26
+ /* |h4| <= 2^25; from now on fits into int32 unchanged */
+ /* |h8| <= 2^25; from now on fits into int32 unchanged */
+ /* |h5| <= 1.01*2^24 */
+ /* |h9| <= 1.51*2^58 */
+
+ c9 = (h9 + (1 << 24)) >> 25
+ h0 += c9 * 19
+ h9 -= c9 << 25
+ /* |h9| <= 2^24; from now on fits into int32 unchanged */
+ /* |h0| <= 1.8*2^37 */
+
+ c0 = (h0 + (1 << 25)) >> 26
+ h1 += c0
+ h0 -= c0 << 26
+ /* |h0| <= 2^25; from now on fits into int32 unchanged */
+ /* |h1| <= 1.01*2^24 */
+
+ h[0] = int32(h0)
+ h[1] = int32(h1)
+ h[2] = int32(h2)
+ h[3] = int32(h3)
+ h[4] = int32(h4)
+ h[5] = int32(h5)
+ h[6] = int32(h6)
+ h[7] = int32(h7)
+ h[8] = int32(h8)
+ h[9] = int32(h9)
+}
+
+// FeMul calculates h = f * g
+// Can overlap h with f or g.
+//
+// Preconditions:
+// |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+// |g| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+//
+// Postconditions:
+// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+//
+// Notes on implementation strategy:
+//
+// Using schoolbook multiplication.
+// Karatsuba would save a little in some cost models.
+//
+// Most multiplications by 2 and 19 are 32-bit precomputations;
+// cheaper than 64-bit postcomputations.
+//
+// There is one remaining multiplication by 19 in the carry chain;
+// one *19 precomputation can be merged into this,
+// but the resulting data flow is considerably less clean.
+//
+// There are 12 carries below.
+// 10 of them are 2-way parallelizable and vectorizable.
+// Can get away with 11 carries, but then data flow is much deeper.
+//
+// With tighter constraints on inputs, can squeeze carries into int32.
+func FeMul(h, f, g *FieldElement) {
+ f0 := int64(f[0])
+ f1 := int64(f[1])
+ f2 := int64(f[2])
+ f3 := int64(f[3])
+ f4 := int64(f[4])
+ f5 := int64(f[5])
+ f6 := int64(f[6])
+ f7 := int64(f[7])
+ f8 := int64(f[8])
+ f9 := int64(f[9])
+
+ f1_2 := int64(2 * f[1])
+ f3_2 := int64(2 * f[3])
+ f5_2 := int64(2 * f[5])
+ f7_2 := int64(2 * f[7])
+ f9_2 := int64(2 * f[9])
+
+ g0 := int64(g[0])
+ g1 := int64(g[1])
+ g2 := int64(g[2])
+ g3 := int64(g[3])
+ g4 := int64(g[4])
+ g5 := int64(g[5])
+ g6 := int64(g[6])
+ g7 := int64(g[7])
+ g8 := int64(g[8])
+ g9 := int64(g[9])
+
+ g1_19 := int64(19 * g[1]) /* 1.4*2^29 */
+ g2_19 := int64(19 * g[2]) /* 1.4*2^30; still ok */
+ g3_19 := int64(19 * g[3])
+ g4_19 := int64(19 * g[4])
+ g5_19 := int64(19 * g[5])
+ g6_19 := int64(19 * g[6])
+ g7_19 := int64(19 * g[7])
+ g8_19 := int64(19 * g[8])
+ g9_19 := int64(19 * g[9])
+
+ h0 := f0*g0 + f1_2*g9_19 + f2*g8_19 + f3_2*g7_19 + f4*g6_19 + f5_2*g5_19 + f6*g4_19 + f7_2*g3_19 + f8*g2_19 + f9_2*g1_19
+ h1 := f0*g1 + f1*g0 + f2*g9_19 + f3*g8_19 + f4*g7_19 + f5*g6_19 + f6*g5_19 + f7*g4_19 + f8*g3_19 + f9*g2_19
+ h2 := f0*g2 + f1_2*g1 + f2*g0 + f3_2*g9_19 + f4*g8_19 + f5_2*g7_19 + f6*g6_19 + f7_2*g5_19 + f8*g4_19 + f9_2*g3_19
+ h3 := f0*g3 + f1*g2 + f2*g1 + f3*g0 + f4*g9_19 + f5*g8_19 + f6*g7_19 + f7*g6_19 + f8*g5_19 + f9*g4_19
+ h4 := f0*g4 + f1_2*g3 + f2*g2 + f3_2*g1 + f4*g0 + f5_2*g9_19 + f6*g8_19 + f7_2*g7_19 + f8*g6_19 + f9_2*g5_19
+ h5 := f0*g5 + f1*g4 + f2*g3 + f3*g2 + f4*g1 + f5*g0 + f6*g9_19 + f7*g8_19 + f8*g7_19 + f9*g6_19
+ h6 := f0*g6 + f1_2*g5 + f2*g4 + f3_2*g3 + f4*g2 + f5_2*g1 + f6*g0 + f7_2*g9_19 + f8*g8_19 + f9_2*g7_19
+ h7 := f0*g7 + f1*g6 + f2*g5 + f3*g4 + f4*g3 + f5*g2 + f6*g1 + f7*g0 + f8*g9_19 + f9*g8_19
+ h8 := f0*g8 + f1_2*g7 + f2*g6 + f3_2*g5 + f4*g4 + f5_2*g3 + f6*g2 + f7_2*g1 + f8*g0 + f9_2*g9_19
+ h9 := f0*g9 + f1*g8 + f2*g7 + f3*g6 + f4*g5 + f5*g4 + f6*g3 + f7*g2 + f8*g1 + f9*g0
+
+ FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
+}
+
+func feSquare(f *FieldElement) (h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 int64) {
+ f0 := int64(f[0])
+ f1 := int64(f[1])
+ f2 := int64(f[2])
+ f3 := int64(f[3])
+ f4 := int64(f[4])
+ f5 := int64(f[5])
+ f6 := int64(f[6])
+ f7 := int64(f[7])
+ f8 := int64(f[8])
+ f9 := int64(f[9])
+ f0_2 := int64(2 * f[0])
+ f1_2 := int64(2 * f[1])
+ f2_2 := int64(2 * f[2])
+ f3_2 := int64(2 * f[3])
+ f4_2 := int64(2 * f[4])
+ f5_2 := int64(2 * f[5])
+ f6_2 := int64(2 * f[6])
+ f7_2 := int64(2 * f[7])
+ f5_38 := 38 * f5 // 1.31*2^30
+ f6_19 := 19 * f6 // 1.31*2^30
+ f7_38 := 38 * f7 // 1.31*2^30
+ f8_19 := 19 * f8 // 1.31*2^30
+ f9_38 := 38 * f9 // 1.31*2^30
+
+ h0 = f0*f0 + f1_2*f9_38 + f2_2*f8_19 + f3_2*f7_38 + f4_2*f6_19 + f5*f5_38
+ h1 = f0_2*f1 + f2*f9_38 + f3_2*f8_19 + f4*f7_38 + f5_2*f6_19
+ h2 = f0_2*f2 + f1_2*f1 + f3_2*f9_38 + f4_2*f8_19 + f5_2*f7_38 + f6*f6_19
+ h3 = f0_2*f3 + f1_2*f2 + f4*f9_38 + f5_2*f8_19 + f6*f7_38
+ h4 = f0_2*f4 + f1_2*f3_2 + f2*f2 + f5_2*f9_38 + f6_2*f8_19 + f7*f7_38
+ h5 = f0_2*f5 + f1_2*f4 + f2_2*f3 + f6*f9_38 + f7_2*f8_19
+ h6 = f0_2*f6 + f1_2*f5_2 + f2_2*f4 + f3_2*f3 + f7_2*f9_38 + f8*f8_19
+ h7 = f0_2*f7 + f1_2*f6 + f2_2*f5 + f3_2*f4 + f8*f9_38
+ h8 = f0_2*f8 + f1_2*f7_2 + f2_2*f6 + f3_2*f5_2 + f4*f4 + f9*f9_38
+ h9 = f0_2*f9 + f1_2*f8 + f2_2*f7 + f3_2*f6 + f4_2*f5
+
+ return
+}
+
+// FeSquare calculates h = f*f. Can overlap h with f.
+//
+// Preconditions:
+// |f| bounded by 1.1*2^26,1.1*2^25,1.1*2^26,1.1*2^25,etc.
+//
+// Postconditions:
+// |h| bounded by 1.1*2^25,1.1*2^24,1.1*2^25,1.1*2^24,etc.
+func FeSquare(h, f *FieldElement) {
+ h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 := feSquare(f)
+ FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
+}
+
+// FeSquare2 sets h = 2 * f * f
+//
+// Can overlap h with f.
+//
+// Preconditions:
+// |f| bounded by 1.65*2^26,1.65*2^25,1.65*2^26,1.65*2^25,etc.
+//
+// Postconditions:
+// |h| bounded by 1.01*2^25,1.01*2^24,1.01*2^25,1.01*2^24,etc.
+// See fe_mul.c for discussion of implementation strategy.
+func FeSquare2(h, f *FieldElement) {
+ h0, h1, h2, h3, h4, h5, h6, h7, h8, h9 := feSquare(f)
+
+ h0 += h0
+ h1 += h1
+ h2 += h2
+ h3 += h3
+ h4 += h4
+ h5 += h5
+ h6 += h6
+ h7 += h7
+ h8 += h8
+ h9 += h9
+
+ FeCombine(h, h0, h1, h2, h3, h4, h5, h6, h7, h8, h9)
+}
+
+func FeInvert(out, z *FieldElement) {
+ var t0, t1, t2, t3 FieldElement
+ var i int
+
+ FeSquare(&t0, z) // 2^1
+ FeSquare(&t1, &t0) // 2^2
+ for i = 1; i < 2; i++ { // 2^3
+ FeSquare(&t1, &t1)
+ }
+ FeMul(&t1, z, &t1) // 2^3 + 2^0
+ FeMul(&t0, &t0, &t1) // 2^3 + 2^1 + 2^0
+ FeSquare(&t2, &t0) // 2^4 + 2^2 + 2^1
+ FeMul(&t1, &t1, &t2) // 2^4 + 2^3 + 2^2 + 2^1 + 2^0
+ FeSquare(&t2, &t1) // 5,4,3,2,1
+ for i = 1; i < 5; i++ { // 9,8,7,6,5
+ FeSquare(&t2, &t2)
+ }
+ FeMul(&t1, &t2, &t1) // 9,8,7,6,5,4,3,2,1,0
+ FeSquare(&t2, &t1) // 10..1
+ for i = 1; i < 10; i++ { // 19..10
+ FeSquare(&t2, &t2)
+ }
+ FeMul(&t2, &t2, &t1) // 19..0
+ FeSquare(&t3, &t2) // 20..1
+ for i = 1; i < 20; i++ { // 39..20
+ FeSquare(&t3, &t3)
+ }
+ FeMul(&t2, &t3, &t2) // 39..0
+ FeSquare(&t2, &t2) // 40..1
+ for i = 1; i < 10; i++ { // 49..10
+ FeSquare(&t2, &t2)
+ }
+ FeMul(&t1, &t2, &t1) // 49..0
+ FeSquare(&t2, &t1) // 50..1
+ for i = 1; i < 50; i++ { // 99..50
+ FeSquare(&t2, &t2)
+ }
+ FeMul(&t2, &t2, &t1) // 99..0
+ FeSquare(&t3, &t2) // 100..1
+ for i = 1; i < 100; i++ { // 199..100
+ FeSquare(&t3, &t3)
+ }
+ FeMul(&t2, &t3, &t2) // 199..0
+ FeSquare(&t2, &t2) // 200..1
+ for i = 1; i < 50; i++ { // 249..50
+ FeSquare(&t2, &t2)
+ }
+ FeMul(&t1, &t2, &t1) // 249..0
+ FeSquare(&t1, &t1) // 250..1
+ for i = 1; i < 5; i++ { // 254..5
+ FeSquare(&t1, &t1)
+ }
+ FeMul(out, &t1, &t0) // 254..5,3,1,0
+}
+
+func fePow22523(out, z *FieldElement) {
+ var t0, t1, t2 FieldElement
+ var i int
+
+ FeSquare(&t0, z)
+ for i = 1; i < 1; i++ {
+ FeSquare(&t0, &t0)
+ }
+ FeSquare(&t1, &t0)
+ for i = 1; i < 2; i++ {
+ FeSquare(&t1, &t1)
+ }
+ FeMul(&t1, z, &t1)
+ FeMul(&t0, &t0, &t1)
+ FeSquare(&t0, &t0)
+ for i = 1; i < 1; i++ {
+ FeSquare(&t0, &t0)
+ }
+ FeMul(&t0, &t1, &t0)
+ FeSquare(&t1, &t0)
+ for i = 1; i < 5; i++ {
+ FeSquare(&t1, &t1)
+ }
+ FeMul(&t0, &t1, &t0)
+ FeSquare(&t1, &t0)
+ for i = 1; i < 10; i++ {
+ FeSquare(&t1, &t1)
+ }
+ FeMul(&t1, &t1, &t0)
+ FeSquare(&t2, &t1)
+ for i = 1; i < 20; i++ {
+ FeSquare(&t2, &t2)
+ }
+ FeMul(&t1, &t2, &t1)
+ FeSquare(&t1, &t1)
+ for i = 1; i < 10; i++ {
+ FeSquare(&t1, &t1)
+ }
+ FeMul(&t0, &t1, &t0)
+ FeSquare(&t1, &t0)
+ for i = 1; i < 50; i++ {
+ FeSquare(&t1, &t1)
+ }
+ FeMul(&t1, &t1, &t0)
+ FeSquare(&t2, &t1)
+ for i = 1; i < 100; i++ {
+ FeSquare(&t2, &t2)
+ }
+ FeMul(&t1, &t2, &t1)
+ FeSquare(&t1, &t1)
+ for i = 1; i < 50; i++ {
+ FeSquare(&t1, &t1)
+ }
+ FeMul(&t0, &t1, &t0)
+ FeSquare(&t0, &t0)
+ for i = 1; i < 2; i++ {
+ FeSquare(&t0, &t0)
+ }
+ FeMul(out, &t0, z)
+}
+
+// Group elements are members of the elliptic curve -x^2 + y^2 = 1 + d * x^2 *
+// y^2 where d = -121665/121666.
+//
+// Several representations are used:
+// ProjectiveGroupElement: (X:Y:Z) satisfying x=X/Z, y=Y/Z
+// ExtendedGroupElement: (X:Y:Z:T) satisfying x=X/Z, y=Y/Z, XY=ZT
+// CompletedGroupElement: ((X:Z),(Y:T)) satisfying x=X/Z, y=Y/T
+// PreComputedGroupElement: (y+x,y-x,2dxy)
+
+type ProjectiveGroupElement struct {
+ X, Y, Z FieldElement
+}
+
+type ExtendedGroupElement struct {
+ X, Y, Z, T FieldElement
+}
+
+type CompletedGroupElement struct {
+ X, Y, Z, T FieldElement
+}
+
+type PreComputedGroupElement struct {
+ yPlusX, yMinusX, xy2d FieldElement
+}
+
+type CachedGroupElement struct {
+ yPlusX, yMinusX, Z, T2d FieldElement
+}
+
+func (p *ProjectiveGroupElement) Zero() {
+ FeZero(&p.X)
+ FeOne(&p.Y)
+ FeOne(&p.Z)
+}
+
+func (p *ProjectiveGroupElement) Double(r *CompletedGroupElement) {
+ var t0 FieldElement
+
+ FeSquare(&r.X, &p.X)
+ FeSquare(&r.Z, &p.Y)
+ FeSquare2(&r.T, &p.Z)
+ FeAdd(&r.Y, &p.X, &p.Y)
+ FeSquare(&t0, &r.Y)
+ FeAdd(&r.Y, &r.Z, &r.X)
+ FeSub(&r.Z, &r.Z, &r.X)
+ FeSub(&r.X, &t0, &r.Y)
+ FeSub(&r.T, &r.T, &r.Z)
+}
+
+func (p *ProjectiveGroupElement) ToBytes(s *[32]byte) {
+ var recip, x, y FieldElement
+
+ FeInvert(&recip, &p.Z)
+ FeMul(&x, &p.X, &recip)
+ FeMul(&y, &p.Y, &recip)
+ FeToBytes(s, &y)
+ s[31] ^= FeIsNegative(&x) << 7
+}
+
+func (p *ExtendedGroupElement) Zero() {
+ FeZero(&p.X)
+ FeOne(&p.Y)
+ FeOne(&p.Z)
+ FeZero(&p.T)
+}
+
+func (p *ExtendedGroupElement) Double(r *CompletedGroupElement) {
+ var q ProjectiveGroupElement
+ p.ToProjective(&q)
+ q.Double(r)
+}
+
+func (p *ExtendedGroupElement) ToCached(r *CachedGroupElement) {
+ FeAdd(&r.yPlusX, &p.Y, &p.X)
+ FeSub(&r.yMinusX, &p.Y, &p.X)
+ FeCopy(&r.Z, &p.Z)
+ FeMul(&r.T2d, &p.T, &d2)
+}
+
+func (p *ExtendedGroupElement) ToProjective(r *ProjectiveGroupElement) {
+ FeCopy(&r.X, &p.X)
+ FeCopy(&r.Y, &p.Y)
+ FeCopy(&r.Z, &p.Z)
+}
+
+func (p *ExtendedGroupElement) ToBytes(s *[32]byte) {
+ var recip, x, y FieldElement
+
+ FeInvert(&recip, &p.Z)
+ FeMul(&x, &p.X, &recip)
+ FeMul(&y, &p.Y, &recip)
+ FeToBytes(s, &y)
+ s[31] ^= FeIsNegative(&x) << 7
+}
+
+func (p *ExtendedGroupElement) FromBytes(s *[32]byte) bool {
+ var u, v, v3, vxx, check FieldElement
+
+ FeFromBytes(&p.Y, s)
+ FeOne(&p.Z)
+ FeSquare(&u, &p.Y)
+ FeMul(&v, &u, &d)
+ FeSub(&u, &u, &p.Z) // y = y^2-1
+ FeAdd(&v, &v, &p.Z) // v = dy^2+1
+
+ FeSquare(&v3, &v)
+ FeMul(&v3, &v3, &v) // v3 = v^3
+ FeSquare(&p.X, &v3)
+ FeMul(&p.X, &p.X, &v)
+ FeMul(&p.X, &p.X, &u) // x = uv^7
+
+ fePow22523(&p.X, &p.X) // x = (uv^7)^((q-5)/8)
+ FeMul(&p.X, &p.X, &v3)
+ FeMul(&p.X, &p.X, &u) // x = uv^3(uv^7)^((q-5)/8)
+
+ var tmpX, tmp2 [32]byte
+
+ FeSquare(&vxx, &p.X)
+ FeMul(&vxx, &vxx, &v)
+ FeSub(&check, &vxx, &u) // vx^2-u
+ if FeIsNonZero(&check) == 1 {
+ FeAdd(&check, &vxx, &u) // vx^2+u
+ if FeIsNonZero(&check) == 1 {
+ return false
+ }
+ FeMul(&p.X, &p.X, &SqrtM1)
+
+ FeToBytes(&tmpX, &p.X)
+ for i, v := range tmpX {
+ tmp2[31-i] = v
+ }
+ }
+
+ if FeIsNegative(&p.X) != (s[31] >> 7) {
+ FeNeg(&p.X, &p.X)
+ }
+
+ FeMul(&p.T, &p.X, &p.Y)
+ return true
+}
+
+func (p *CompletedGroupElement) ToProjective(r *ProjectiveGroupElement) {
+ FeMul(&r.X, &p.X, &p.T)
+ FeMul(&r.Y, &p.Y, &p.Z)
+ FeMul(&r.Z, &p.Z, &p.T)
+}
+
+func (p *CompletedGroupElement) ToExtended(r *ExtendedGroupElement) {
+ FeMul(&r.X, &p.X, &p.T)
+ FeMul(&r.Y, &p.Y, &p.Z)
+ FeMul(&r.Z, &p.Z, &p.T)
+ FeMul(&r.T, &p.X, &p.Y)
+}
+
+func (p *PreComputedGroupElement) Zero() {
+ FeOne(&p.yPlusX)
+ FeOne(&p.yMinusX)
+ FeZero(&p.xy2d)
+}
+
+func geAdd(r *CompletedGroupElement, p *ExtendedGroupElement, q *CachedGroupElement) {
+ var t0 FieldElement
+
+ FeAdd(&r.X, &p.Y, &p.X)
+ FeSub(&r.Y, &p.Y, &p.X)
+ FeMul(&r.Z, &r.X, &q.yPlusX)
+ FeMul(&r.Y, &r.Y, &q.yMinusX)
+ FeMul(&r.T, &q.T2d, &p.T)
+ FeMul(&r.X, &p.Z, &q.Z)
+ FeAdd(&t0, &r.X, &r.X)
+ FeSub(&r.X, &r.Z, &r.Y)
+ FeAdd(&r.Y, &r.Z, &r.Y)
+ FeAdd(&r.Z, &t0, &r.T)
+ FeSub(&r.T, &t0, &r.T)
+}
+
+func geSub(r *CompletedGroupElement, p *ExtendedGroupElement, q *CachedGroupElement) {
+ var t0 FieldElement
+
+ FeAdd(&r.X, &p.Y, &p.X)
+ FeSub(&r.Y, &p.Y, &p.X)
+ FeMul(&r.Z, &r.X, &q.yMinusX)
+ FeMul(&r.Y, &r.Y, &q.yPlusX)
+ FeMul(&r.T, &q.T2d, &p.T)
+ FeMul(&r.X, &p.Z, &q.Z)
+ FeAdd(&t0, &r.X, &r.X)
+ FeSub(&r.X, &r.Z, &r.Y)
+ FeAdd(&r.Y, &r.Z, &r.Y)
+ FeSub(&r.Z, &t0, &r.T)
+ FeAdd(&r.T, &t0, &r.T)
+}
+
+func geMixedAdd(r *CompletedGroupElement, p *ExtendedGroupElement, q *PreComputedGroupElement) {
+ var t0 FieldElement
+
+ FeAdd(&r.X, &p.Y, &p.X)
+ FeSub(&r.Y, &p.Y, &p.X)
+ FeMul(&r.Z, &r.X, &q.yPlusX)
+ FeMul(&r.Y, &r.Y, &q.yMinusX)
+ FeMul(&r.T, &q.xy2d, &p.T)
+ FeAdd(&t0, &p.Z, &p.Z)
+ FeSub(&r.X, &r.Z, &r.Y)
+ FeAdd(&r.Y, &r.Z, &r.Y)
+ FeAdd(&r.Z, &t0, &r.T)
+ FeSub(&r.T, &t0, &r.T)
+}
+
+func geMixedSub(r *CompletedGroupElement, p *ExtendedGroupElement, q *PreComputedGroupElement) {
+ var t0 FieldElement
+
+ FeAdd(&r.X, &p.Y, &p.X)
+ FeSub(&r.Y, &p.Y, &p.X)
+ FeMul(&r.Z, &r.X, &q.yMinusX)
+ FeMul(&r.Y, &r.Y, &q.yPlusX)
+ FeMul(&r.T, &q.xy2d, &p.T)
+ FeAdd(&t0, &p.Z, &p.Z)
+ FeSub(&r.X, &r.Z, &r.Y)
+ FeAdd(&r.Y, &r.Z, &r.Y)
+ FeSub(&r.Z, &t0, &r.T)
+ FeAdd(&r.T, &t0, &r.T)
+}
+
+func slide(r *[256]int8, a *[32]byte) {
+ for i := range r {
+ r[i] = int8(1 & (a[i>>3] >> uint(i&7)))
+ }
+
+ for i := range r {
+ if r[i] != 0 {
+ for b := 1; b <= 6 && i+b < 256; b++ {
+ if r[i+b] != 0 {
+ if r[i]+(r[i+b]<= -15 {
+ r[i] -= r[i+b] << uint(b)
+ for k := i + b; k < 256; k++ {
+ if r[k] == 0 {
+ r[k] = 1
+ break
+ }
+ r[k] = 0
+ }
+ } else {
+ break
+ }
+ }
+ }
+ }
+ }
+}
+
+// GeDoubleScalarMultVartime sets r = a*A + b*B
+// where a = a[0]+256*a[1]+...+256^31 a[31].
+// and b = b[0]+256*b[1]+...+256^31 b[31].
+// B is the Ed25519 base point (x,4/5) with x positive.
+func GeDoubleScalarMultVartime(r *ProjectiveGroupElement, a *[32]byte, A *ExtendedGroupElement, b *[32]byte) {
+ var aSlide, bSlide [256]int8
+ var Ai [8]CachedGroupElement // A,3A,5A,7A,9A,11A,13A,15A
+ var t CompletedGroupElement
+ var u, A2 ExtendedGroupElement
+ var i int
+
+ slide(&aSlide, a)
+ slide(&bSlide, b)
+
+ A.ToCached(&Ai[0])
+ A.Double(&t)
+ t.ToExtended(&A2)
+
+ for i := 0; i < 7; i++ {
+ geAdd(&t, &A2, &Ai[i])
+ t.ToExtended(&u)
+ u.ToCached(&Ai[i+1])
+ }
+
+ r.Zero()
+
+ for i = 255; i >= 0; i-- {
+ if aSlide[i] != 0 || bSlide[i] != 0 {
+ break
+ }
+ }
+
+ for ; i >= 0; i-- {
+ r.Double(&t)
+
+ if aSlide[i] > 0 {
+ t.ToExtended(&u)
+ geAdd(&t, &u, &Ai[aSlide[i]/2])
+ } else if aSlide[i] < 0 {
+ t.ToExtended(&u)
+ geSub(&t, &u, &Ai[(-aSlide[i])/2])
+ }
+
+ if bSlide[i] > 0 {
+ t.ToExtended(&u)
+ geMixedAdd(&t, &u, &bi[bSlide[i]/2])
+ } else if bSlide[i] < 0 {
+ t.ToExtended(&u)
+ geMixedSub(&t, &u, &bi[(-bSlide[i])/2])
+ }
+
+ t.ToProjective(r)
+ }
+}
+
+// equal returns 1 if b == c and 0 otherwise, assuming that b and c are
+// non-negative.
+func equal(b, c int32) int32 {
+ x := uint32(b ^ c)
+ x--
+ return int32(x >> 31)
+}
+
+// negative returns 1 if b < 0 and 0 otherwise.
+func negative(b int32) int32 {
+ return (b >> 31) & 1
+}
+
+func PreComputedGroupElementCMove(t, u *PreComputedGroupElement, b int32) {
+ FeCMove(&t.yPlusX, &u.yPlusX, b)
+ FeCMove(&t.yMinusX, &u.yMinusX, b)
+ FeCMove(&t.xy2d, &u.xy2d, b)
+}
+
+func selectPoint(t *PreComputedGroupElement, pos int32, b int32) {
+ var minusT PreComputedGroupElement
+ bNegative := negative(b)
+ bAbs := b - (((-bNegative) & b) << 1)
+
+ t.Zero()
+ for i := int32(0); i < 8; i++ {
+ PreComputedGroupElementCMove(t, &base[pos][i], equal(bAbs, i+1))
+ }
+ FeCopy(&minusT.yPlusX, &t.yMinusX)
+ FeCopy(&minusT.yMinusX, &t.yPlusX)
+ FeNeg(&minusT.xy2d, &t.xy2d)
+ PreComputedGroupElementCMove(t, &minusT, bNegative)
+}
+
+// GeScalarMultBase computes h = a*B, where
+// a = a[0]+256*a[1]+...+256^31 a[31]
+// B is the Ed25519 base point (x,4/5) with x positive.
+//
+// Preconditions:
+// a[31] <= 127
+func GeScalarMultBase(h *ExtendedGroupElement, a *[32]byte) {
+ var e [64]int8
+
+ for i, v := range a {
+ e[2*i] = int8(v & 15)
+ e[2*i+1] = int8((v >> 4) & 15)
+ }
+
+ // each e[i] is between 0 and 15 and e[63] is between 0 and 7.
+
+ carry := int8(0)
+ for i := 0; i < 63; i++ {
+ e[i] += carry
+ carry = (e[i] + 8) >> 4
+ e[i] -= carry << 4
+ }
+ e[63] += carry
+ // each e[i] is between -8 and 8.
+
+ h.Zero()
+ var t PreComputedGroupElement
+ var r CompletedGroupElement
+ for i := int32(1); i < 64; i += 2 {
+ selectPoint(&t, i/2, int32(e[i]))
+ geMixedAdd(&r, h, &t)
+ r.ToExtended(h)
+ }
+
+ var s ProjectiveGroupElement
+
+ h.Double(&r)
+ r.ToProjective(&s)
+ s.Double(&r)
+ r.ToProjective(&s)
+ s.Double(&r)
+ r.ToProjective(&s)
+ s.Double(&r)
+ r.ToExtended(h)
+
+ for i := int32(0); i < 64; i += 2 {
+ selectPoint(&t, i/2, int32(e[i]))
+ geMixedAdd(&r, h, &t)
+ r.ToExtended(h)
+ }
+}
+
+// The scalars are GF(2^252 + 27742317777372353535851937790883648493).
+
+// Input:
+// a[0]+256*a[1]+...+256^31*a[31] = a
+// b[0]+256*b[1]+...+256^31*b[31] = b
+// c[0]+256*c[1]+...+256^31*c[31] = c
+//
+// Output:
+// s[0]+256*s[1]+...+256^31*s[31] = (ab+c) mod l
+// where l = 2^252 + 27742317777372353535851937790883648493.
+func ScMulAdd(s, a, b, c *[32]byte) {
+ a0 := 2097151 & load3(a[:])
+ a1 := 2097151 & (load4(a[2:]) >> 5)
+ a2 := 2097151 & (load3(a[5:]) >> 2)
+ a3 := 2097151 & (load4(a[7:]) >> 7)
+ a4 := 2097151 & (load4(a[10:]) >> 4)
+ a5 := 2097151 & (load3(a[13:]) >> 1)
+ a6 := 2097151 & (load4(a[15:]) >> 6)
+ a7 := 2097151 & (load3(a[18:]) >> 3)
+ a8 := 2097151 & load3(a[21:])
+ a9 := 2097151 & (load4(a[23:]) >> 5)
+ a10 := 2097151 & (load3(a[26:]) >> 2)
+ a11 := (load4(a[28:]) >> 7)
+ b0 := 2097151 & load3(b[:])
+ b1 := 2097151 & (load4(b[2:]) >> 5)
+ b2 := 2097151 & (load3(b[5:]) >> 2)
+ b3 := 2097151 & (load4(b[7:]) >> 7)
+ b4 := 2097151 & (load4(b[10:]) >> 4)
+ b5 := 2097151 & (load3(b[13:]) >> 1)
+ b6 := 2097151 & (load4(b[15:]) >> 6)
+ b7 := 2097151 & (load3(b[18:]) >> 3)
+ b8 := 2097151 & load3(b[21:])
+ b9 := 2097151 & (load4(b[23:]) >> 5)
+ b10 := 2097151 & (load3(b[26:]) >> 2)
+ b11 := (load4(b[28:]) >> 7)
+ c0 := 2097151 & load3(c[:])
+ c1 := 2097151 & (load4(c[2:]) >> 5)
+ c2 := 2097151 & (load3(c[5:]) >> 2)
+ c3 := 2097151 & (load4(c[7:]) >> 7)
+ c4 := 2097151 & (load4(c[10:]) >> 4)
+ c5 := 2097151 & (load3(c[13:]) >> 1)
+ c6 := 2097151 & (load4(c[15:]) >> 6)
+ c7 := 2097151 & (load3(c[18:]) >> 3)
+ c8 := 2097151 & load3(c[21:])
+ c9 := 2097151 & (load4(c[23:]) >> 5)
+ c10 := 2097151 & (load3(c[26:]) >> 2)
+ c11 := (load4(c[28:]) >> 7)
+ var carry [23]int64
+
+ s0 := c0 + a0*b0
+ s1 := c1 + a0*b1 + a1*b0
+ s2 := c2 + a0*b2 + a1*b1 + a2*b0
+ s3 := c3 + a0*b3 + a1*b2 + a2*b1 + a3*b0
+ s4 := c4 + a0*b4 + a1*b3 + a2*b2 + a3*b1 + a4*b0
+ s5 := c5 + a0*b5 + a1*b4 + a2*b3 + a3*b2 + a4*b1 + a5*b0
+ s6 := c6 + a0*b6 + a1*b5 + a2*b4 + a3*b3 + a4*b2 + a5*b1 + a6*b0
+ s7 := c7 + a0*b7 + a1*b6 + a2*b5 + a3*b4 + a4*b3 + a5*b2 + a6*b1 + a7*b0
+ s8 := c8 + a0*b8 + a1*b7 + a2*b6 + a3*b5 + a4*b4 + a5*b3 + a6*b2 + a7*b1 + a8*b0
+ s9 := c9 + a0*b9 + a1*b8 + a2*b7 + a3*b6 + a4*b5 + a5*b4 + a6*b3 + a7*b2 + a8*b1 + a9*b0
+ s10 := c10 + a0*b10 + a1*b9 + a2*b8 + a3*b7 + a4*b6 + a5*b5 + a6*b4 + a7*b3 + a8*b2 + a9*b1 + a10*b0
+ s11 := c11 + a0*b11 + a1*b10 + a2*b9 + a3*b8 + a4*b7 + a5*b6 + a6*b5 + a7*b4 + a8*b3 + a9*b2 + a10*b1 + a11*b0
+ s12 := a1*b11 + a2*b10 + a3*b9 + a4*b8 + a5*b7 + a6*b6 + a7*b5 + a8*b4 + a9*b3 + a10*b2 + a11*b1
+ s13 := a2*b11 + a3*b10 + a4*b9 + a5*b8 + a6*b7 + a7*b6 + a8*b5 + a9*b4 + a10*b3 + a11*b2
+ s14 := a3*b11 + a4*b10 + a5*b9 + a6*b8 + a7*b7 + a8*b6 + a9*b5 + a10*b4 + a11*b3
+ s15 := a4*b11 + a5*b10 + a6*b9 + a7*b8 + a8*b7 + a9*b6 + a10*b5 + a11*b4
+ s16 := a5*b11 + a6*b10 + a7*b9 + a8*b8 + a9*b7 + a10*b6 + a11*b5
+ s17 := a6*b11 + a7*b10 + a8*b9 + a9*b8 + a10*b7 + a11*b6
+ s18 := a7*b11 + a8*b10 + a9*b9 + a10*b8 + a11*b7
+ s19 := a8*b11 + a9*b10 + a10*b9 + a11*b8
+ s20 := a9*b11 + a10*b10 + a11*b9
+ s21 := a10*b11 + a11*b10
+ s22 := a11 * b11
+ s23 := int64(0)
+
+ carry[0] = (s0 + (1 << 20)) >> 21
+ s1 += carry[0]
+ s0 -= carry[0] << 21
+ carry[2] = (s2 + (1 << 20)) >> 21
+ s3 += carry[2]
+ s2 -= carry[2] << 21
+ carry[4] = (s4 + (1 << 20)) >> 21
+ s5 += carry[4]
+ s4 -= carry[4] << 21
+ carry[6] = (s6 + (1 << 20)) >> 21
+ s7 += carry[6]
+ s6 -= carry[6] << 21
+ carry[8] = (s8 + (1 << 20)) >> 21
+ s9 += carry[8]
+ s8 -= carry[8] << 21
+ carry[10] = (s10 + (1 << 20)) >> 21
+ s11 += carry[10]
+ s10 -= carry[10] << 21
+ carry[12] = (s12 + (1 << 20)) >> 21
+ s13 += carry[12]
+ s12 -= carry[12] << 21
+ carry[14] = (s14 + (1 << 20)) >> 21
+ s15 += carry[14]
+ s14 -= carry[14] << 21
+ carry[16] = (s16 + (1 << 20)) >> 21
+ s17 += carry[16]
+ s16 -= carry[16] << 21
+ carry[18] = (s18 + (1 << 20)) >> 21
+ s19 += carry[18]
+ s18 -= carry[18] << 21
+ carry[20] = (s20 + (1 << 20)) >> 21
+ s21 += carry[20]
+ s20 -= carry[20] << 21
+ carry[22] = (s22 + (1 << 20)) >> 21
+ s23 += carry[22]
+ s22 -= carry[22] << 21
+
+ carry[1] = (s1 + (1 << 20)) >> 21
+ s2 += carry[1]
+ s1 -= carry[1] << 21
+ carry[3] = (s3 + (1 << 20)) >> 21
+ s4 += carry[3]
+ s3 -= carry[3] << 21
+ carry[5] = (s5 + (1 << 20)) >> 21
+ s6 += carry[5]
+ s5 -= carry[5] << 21
+ carry[7] = (s7 + (1 << 20)) >> 21
+ s8 += carry[7]
+ s7 -= carry[7] << 21
+ carry[9] = (s9 + (1 << 20)) >> 21
+ s10 += carry[9]
+ s9 -= carry[9] << 21
+ carry[11] = (s11 + (1 << 20)) >> 21
+ s12 += carry[11]
+ s11 -= carry[11] << 21
+ carry[13] = (s13 + (1 << 20)) >> 21
+ s14 += carry[13]
+ s13 -= carry[13] << 21
+ carry[15] = (s15 + (1 << 20)) >> 21
+ s16 += carry[15]
+ s15 -= carry[15] << 21
+ carry[17] = (s17 + (1 << 20)) >> 21
+ s18 += carry[17]
+ s17 -= carry[17] << 21
+ carry[19] = (s19 + (1 << 20)) >> 21
+ s20 += carry[19]
+ s19 -= carry[19] << 21
+ carry[21] = (s21 + (1 << 20)) >> 21
+ s22 += carry[21]
+ s21 -= carry[21] << 21
+
+ s11 += s23 * 666643
+ s12 += s23 * 470296
+ s13 += s23 * 654183
+ s14 -= s23 * 997805
+ s15 += s23 * 136657
+ s16 -= s23 * 683901
+ s23 = 0
+
+ s10 += s22 * 666643
+ s11 += s22 * 470296
+ s12 += s22 * 654183
+ s13 -= s22 * 997805
+ s14 += s22 * 136657
+ s15 -= s22 * 683901
+ s22 = 0
+
+ s9 += s21 * 666643
+ s10 += s21 * 470296
+ s11 += s21 * 654183
+ s12 -= s21 * 997805
+ s13 += s21 * 136657
+ s14 -= s21 * 683901
+ s21 = 0
+
+ s8 += s20 * 666643
+ s9 += s20 * 470296
+ s10 += s20 * 654183
+ s11 -= s20 * 997805
+ s12 += s20 * 136657
+ s13 -= s20 * 683901
+ s20 = 0
+
+ s7 += s19 * 666643
+ s8 += s19 * 470296
+ s9 += s19 * 654183
+ s10 -= s19 * 997805
+ s11 += s19 * 136657
+ s12 -= s19 * 683901
+ s19 = 0
+
+ s6 += s18 * 666643
+ s7 += s18 * 470296
+ s8 += s18 * 654183
+ s9 -= s18 * 997805
+ s10 += s18 * 136657
+ s11 -= s18 * 683901
+ s18 = 0
+
+ carry[6] = (s6 + (1 << 20)) >> 21
+ s7 += carry[6]
+ s6 -= carry[6] << 21
+ carry[8] = (s8 + (1 << 20)) >> 21
+ s9 += carry[8]
+ s8 -= carry[8] << 21
+ carry[10] = (s10 + (1 << 20)) >> 21
+ s11 += carry[10]
+ s10 -= carry[10] << 21
+ carry[12] = (s12 + (1 << 20)) >> 21
+ s13 += carry[12]
+ s12 -= carry[12] << 21
+ carry[14] = (s14 + (1 << 20)) >> 21
+ s15 += carry[14]
+ s14 -= carry[14] << 21
+ carry[16] = (s16 + (1 << 20)) >> 21
+ s17 += carry[16]
+ s16 -= carry[16] << 21
+
+ carry[7] = (s7 + (1 << 20)) >> 21
+ s8 += carry[7]
+ s7 -= carry[7] << 21
+ carry[9] = (s9 + (1 << 20)) >> 21
+ s10 += carry[9]
+ s9 -= carry[9] << 21
+ carry[11] = (s11 + (1 << 20)) >> 21
+ s12 += carry[11]
+ s11 -= carry[11] << 21
+ carry[13] = (s13 + (1 << 20)) >> 21
+ s14 += carry[13]
+ s13 -= carry[13] << 21
+ carry[15] = (s15 + (1 << 20)) >> 21
+ s16 += carry[15]
+ s15 -= carry[15] << 21
+
+ s5 += s17 * 666643
+ s6 += s17 * 470296
+ s7 += s17 * 654183
+ s8 -= s17 * 997805
+ s9 += s17 * 136657
+ s10 -= s17 * 683901
+ s17 = 0
+
+ s4 += s16 * 666643
+ s5 += s16 * 470296
+ s6 += s16 * 654183
+ s7 -= s16 * 997805
+ s8 += s16 * 136657
+ s9 -= s16 * 683901
+ s16 = 0
+
+ s3 += s15 * 666643
+ s4 += s15 * 470296
+ s5 += s15 * 654183
+ s6 -= s15 * 997805
+ s7 += s15 * 136657
+ s8 -= s15 * 683901
+ s15 = 0
+
+ s2 += s14 * 666643
+ s3 += s14 * 470296
+ s4 += s14 * 654183
+ s5 -= s14 * 997805
+ s6 += s14 * 136657
+ s7 -= s14 * 683901
+ s14 = 0
+
+ s1 += s13 * 666643
+ s2 += s13 * 470296
+ s3 += s13 * 654183
+ s4 -= s13 * 997805
+ s5 += s13 * 136657
+ s6 -= s13 * 683901
+ s13 = 0
+
+ s0 += s12 * 666643
+ s1 += s12 * 470296
+ s2 += s12 * 654183
+ s3 -= s12 * 997805
+ s4 += s12 * 136657
+ s5 -= s12 * 683901
+ s12 = 0
+
+ carry[0] = (s0 + (1 << 20)) >> 21
+ s1 += carry[0]
+ s0 -= carry[0] << 21
+ carry[2] = (s2 + (1 << 20)) >> 21
+ s3 += carry[2]
+ s2 -= carry[2] << 21
+ carry[4] = (s4 + (1 << 20)) >> 21
+ s5 += carry[4]
+ s4 -= carry[4] << 21
+ carry[6] = (s6 + (1 << 20)) >> 21
+ s7 += carry[6]
+ s6 -= carry[6] << 21
+ carry[8] = (s8 + (1 << 20)) >> 21
+ s9 += carry[8]
+ s8 -= carry[8] << 21
+ carry[10] = (s10 + (1 << 20)) >> 21
+ s11 += carry[10]
+ s10 -= carry[10] << 21
+
+ carry[1] = (s1 + (1 << 20)) >> 21
+ s2 += carry[1]
+ s1 -= carry[1] << 21
+ carry[3] = (s3 + (1 << 20)) >> 21
+ s4 += carry[3]
+ s3 -= carry[3] << 21
+ carry[5] = (s5 + (1 << 20)) >> 21
+ s6 += carry[5]
+ s5 -= carry[5] << 21
+ carry[7] = (s7 + (1 << 20)) >> 21
+ s8 += carry[7]
+ s7 -= carry[7] << 21
+ carry[9] = (s9 + (1 << 20)) >> 21
+ s10 += carry[9]
+ s9 -= carry[9] << 21
+ carry[11] = (s11 + (1 << 20)) >> 21
+ s12 += carry[11]
+ s11 -= carry[11] << 21
+
+ s0 += s12 * 666643
+ s1 += s12 * 470296
+ s2 += s12 * 654183
+ s3 -= s12 * 997805
+ s4 += s12 * 136657
+ s5 -= s12 * 683901
+ s12 = 0
+
+ carry[0] = s0 >> 21
+ s1 += carry[0]
+ s0 -= carry[0] << 21
+ carry[1] = s1 >> 21
+ s2 += carry[1]
+ s1 -= carry[1] << 21
+ carry[2] = s2 >> 21
+ s3 += carry[2]
+ s2 -= carry[2] << 21
+ carry[3] = s3 >> 21
+ s4 += carry[3]
+ s3 -= carry[3] << 21
+ carry[4] = s4 >> 21
+ s5 += carry[4]
+ s4 -= carry[4] << 21
+ carry[5] = s5 >> 21
+ s6 += carry[5]
+ s5 -= carry[5] << 21
+ carry[6] = s6 >> 21
+ s7 += carry[6]
+ s6 -= carry[6] << 21
+ carry[7] = s7 >> 21
+ s8 += carry[7]
+ s7 -= carry[7] << 21
+ carry[8] = s8 >> 21
+ s9 += carry[8]
+ s8 -= carry[8] << 21
+ carry[9] = s9 >> 21
+ s10 += carry[9]
+ s9 -= carry[9] << 21
+ carry[10] = s10 >> 21
+ s11 += carry[10]
+ s10 -= carry[10] << 21
+ carry[11] = s11 >> 21
+ s12 += carry[11]
+ s11 -= carry[11] << 21
+
+ s0 += s12 * 666643
+ s1 += s12 * 470296
+ s2 += s12 * 654183
+ s3 -= s12 * 997805
+ s4 += s12 * 136657
+ s5 -= s12 * 683901
+ s12 = 0
+
+ carry[0] = s0 >> 21
+ s1 += carry[0]
+ s0 -= carry[0] << 21
+ carry[1] = s1 >> 21
+ s2 += carry[1]
+ s1 -= carry[1] << 21
+ carry[2] = s2 >> 21
+ s3 += carry[2]
+ s2 -= carry[2] << 21
+ carry[3] = s3 >> 21
+ s4 += carry[3]
+ s3 -= carry[3] << 21
+ carry[4] = s4 >> 21
+ s5 += carry[4]
+ s4 -= carry[4] << 21
+ carry[5] = s5 >> 21
+ s6 += carry[5]
+ s5 -= carry[5] << 21
+ carry[6] = s6 >> 21
+ s7 += carry[6]
+ s6 -= carry[6] << 21
+ carry[7] = s7 >> 21
+ s8 += carry[7]
+ s7 -= carry[7] << 21
+ carry[8] = s8 >> 21
+ s9 += carry[8]
+ s8 -= carry[8] << 21
+ carry[9] = s9 >> 21
+ s10 += carry[9]
+ s9 -= carry[9] << 21
+ carry[10] = s10 >> 21
+ s11 += carry[10]
+ s10 -= carry[10] << 21
+
+ s[0] = byte(s0 >> 0)
+ s[1] = byte(s0 >> 8)
+ s[2] = byte((s0 >> 16) | (s1 << 5))
+ s[3] = byte(s1 >> 3)
+ s[4] = byte(s1 >> 11)
+ s[5] = byte((s1 >> 19) | (s2 << 2))
+ s[6] = byte(s2 >> 6)
+ s[7] = byte((s2 >> 14) | (s3 << 7))
+ s[8] = byte(s3 >> 1)
+ s[9] = byte(s3 >> 9)
+ s[10] = byte((s3 >> 17) | (s4 << 4))
+ s[11] = byte(s4 >> 4)
+ s[12] = byte(s4 >> 12)
+ s[13] = byte((s4 >> 20) | (s5 << 1))
+ s[14] = byte(s5 >> 7)
+ s[15] = byte((s5 >> 15) | (s6 << 6))
+ s[16] = byte(s6 >> 2)
+ s[17] = byte(s6 >> 10)
+ s[18] = byte((s6 >> 18) | (s7 << 3))
+ s[19] = byte(s7 >> 5)
+ s[20] = byte(s7 >> 13)
+ s[21] = byte(s8 >> 0)
+ s[22] = byte(s8 >> 8)
+ s[23] = byte((s8 >> 16) | (s9 << 5))
+ s[24] = byte(s9 >> 3)
+ s[25] = byte(s9 >> 11)
+ s[26] = byte((s9 >> 19) | (s10 << 2))
+ s[27] = byte(s10 >> 6)
+ s[28] = byte((s10 >> 14) | (s11 << 7))
+ s[29] = byte(s11 >> 1)
+ s[30] = byte(s11 >> 9)
+ s[31] = byte(s11 >> 17)
+}
+
+// Input:
+// s[0]+256*s[1]+...+256^63*s[63] = s
+//
+// Output:
+// s[0]+256*s[1]+...+256^31*s[31] = s mod l
+// where l = 2^252 + 27742317777372353535851937790883648493.
+func ScReduce(out *[32]byte, s *[64]byte) {
+ s0 := 2097151 & load3(s[:])
+ s1 := 2097151 & (load4(s[2:]) >> 5)
+ s2 := 2097151 & (load3(s[5:]) >> 2)
+ s3 := 2097151 & (load4(s[7:]) >> 7)
+ s4 := 2097151 & (load4(s[10:]) >> 4)
+ s5 := 2097151 & (load3(s[13:]) >> 1)
+ s6 := 2097151 & (load4(s[15:]) >> 6)
+ s7 := 2097151 & (load3(s[18:]) >> 3)
+ s8 := 2097151 & load3(s[21:])
+ s9 := 2097151 & (load4(s[23:]) >> 5)
+ s10 := 2097151 & (load3(s[26:]) >> 2)
+ s11 := 2097151 & (load4(s[28:]) >> 7)
+ s12 := 2097151 & (load4(s[31:]) >> 4)
+ s13 := 2097151 & (load3(s[34:]) >> 1)
+ s14 := 2097151 & (load4(s[36:]) >> 6)
+ s15 := 2097151 & (load3(s[39:]) >> 3)
+ s16 := 2097151 & load3(s[42:])
+ s17 := 2097151 & (load4(s[44:]) >> 5)
+ s18 := 2097151 & (load3(s[47:]) >> 2)
+ s19 := 2097151 & (load4(s[49:]) >> 7)
+ s20 := 2097151 & (load4(s[52:]) >> 4)
+ s21 := 2097151 & (load3(s[55:]) >> 1)
+ s22 := 2097151 & (load4(s[57:]) >> 6)
+ s23 := (load4(s[60:]) >> 3)
+
+ s11 += s23 * 666643
+ s12 += s23 * 470296
+ s13 += s23 * 654183
+ s14 -= s23 * 997805
+ s15 += s23 * 136657
+ s16 -= s23 * 683901
+ s23 = 0
+
+ s10 += s22 * 666643
+ s11 += s22 * 470296
+ s12 += s22 * 654183
+ s13 -= s22 * 997805
+ s14 += s22 * 136657
+ s15 -= s22 * 683901
+ s22 = 0
+
+ s9 += s21 * 666643
+ s10 += s21 * 470296
+ s11 += s21 * 654183
+ s12 -= s21 * 997805
+ s13 += s21 * 136657
+ s14 -= s21 * 683901
+ s21 = 0
+
+ s8 += s20 * 666643
+ s9 += s20 * 470296
+ s10 += s20 * 654183
+ s11 -= s20 * 997805
+ s12 += s20 * 136657
+ s13 -= s20 * 683901
+ s20 = 0
+
+ s7 += s19 * 666643
+ s8 += s19 * 470296
+ s9 += s19 * 654183
+ s10 -= s19 * 997805
+ s11 += s19 * 136657
+ s12 -= s19 * 683901
+ s19 = 0
+
+ s6 += s18 * 666643
+ s7 += s18 * 470296
+ s8 += s18 * 654183
+ s9 -= s18 * 997805
+ s10 += s18 * 136657
+ s11 -= s18 * 683901
+ s18 = 0
+
+ var carry [17]int64
+
+ carry[6] = (s6 + (1 << 20)) >> 21
+ s7 += carry[6]
+ s6 -= carry[6] << 21
+ carry[8] = (s8 + (1 << 20)) >> 21
+ s9 += carry[8]
+ s8 -= carry[8] << 21
+ carry[10] = (s10 + (1 << 20)) >> 21
+ s11 += carry[10]
+ s10 -= carry[10] << 21
+ carry[12] = (s12 + (1 << 20)) >> 21
+ s13 += carry[12]
+ s12 -= carry[12] << 21
+ carry[14] = (s14 + (1 << 20)) >> 21
+ s15 += carry[14]
+ s14 -= carry[14] << 21
+ carry[16] = (s16 + (1 << 20)) >> 21
+ s17 += carry[16]
+ s16 -= carry[16] << 21
+
+ carry[7] = (s7 + (1 << 20)) >> 21
+ s8 += carry[7]
+ s7 -= carry[7] << 21
+ carry[9] = (s9 + (1 << 20)) >> 21
+ s10 += carry[9]
+ s9 -= carry[9] << 21
+ carry[11] = (s11 + (1 << 20)) >> 21
+ s12 += carry[11]
+ s11 -= carry[11] << 21
+ carry[13] = (s13 + (1 << 20)) >> 21
+ s14 += carry[13]
+ s13 -= carry[13] << 21
+ carry[15] = (s15 + (1 << 20)) >> 21
+ s16 += carry[15]
+ s15 -= carry[15] << 21
+
+ s5 += s17 * 666643
+ s6 += s17 * 470296
+ s7 += s17 * 654183
+ s8 -= s17 * 997805
+ s9 += s17 * 136657
+ s10 -= s17 * 683901
+ s17 = 0
+
+ s4 += s16 * 666643
+ s5 += s16 * 470296
+ s6 += s16 * 654183
+ s7 -= s16 * 997805
+ s8 += s16 * 136657
+ s9 -= s16 * 683901
+ s16 = 0
+
+ s3 += s15 * 666643
+ s4 += s15 * 470296
+ s5 += s15 * 654183
+ s6 -= s15 * 997805
+ s7 += s15 * 136657
+ s8 -= s15 * 683901
+ s15 = 0
+
+ s2 += s14 * 666643
+ s3 += s14 * 470296
+ s4 += s14 * 654183
+ s5 -= s14 * 997805
+ s6 += s14 * 136657
+ s7 -= s14 * 683901
+ s14 = 0
+
+ s1 += s13 * 666643
+ s2 += s13 * 470296
+ s3 += s13 * 654183
+ s4 -= s13 * 997805
+ s5 += s13 * 136657
+ s6 -= s13 * 683901
+ s13 = 0
+
+ s0 += s12 * 666643
+ s1 += s12 * 470296
+ s2 += s12 * 654183
+ s3 -= s12 * 997805
+ s4 += s12 * 136657
+ s5 -= s12 * 683901
+ s12 = 0
+
+ carry[0] = (s0 + (1 << 20)) >> 21
+ s1 += carry[0]
+ s0 -= carry[0] << 21
+ carry[2] = (s2 + (1 << 20)) >> 21
+ s3 += carry[2]
+ s2 -= carry[2] << 21
+ carry[4] = (s4 + (1 << 20)) >> 21
+ s5 += carry[4]
+ s4 -= carry[4] << 21
+ carry[6] = (s6 + (1 << 20)) >> 21
+ s7 += carry[6]
+ s6 -= carry[6] << 21
+ carry[8] = (s8 + (1 << 20)) >> 21
+ s9 += carry[8]
+ s8 -= carry[8] << 21
+ carry[10] = (s10 + (1 << 20)) >> 21
+ s11 += carry[10]
+ s10 -= carry[10] << 21
+
+ carry[1] = (s1 + (1 << 20)) >> 21
+ s2 += carry[1]
+ s1 -= carry[1] << 21
+ carry[3] = (s3 + (1 << 20)) >> 21
+ s4 += carry[3]
+ s3 -= carry[3] << 21
+ carry[5] = (s5 + (1 << 20)) >> 21
+ s6 += carry[5]
+ s5 -= carry[5] << 21
+ carry[7] = (s7 + (1 << 20)) >> 21
+ s8 += carry[7]
+ s7 -= carry[7] << 21
+ carry[9] = (s9 + (1 << 20)) >> 21
+ s10 += carry[9]
+ s9 -= carry[9] << 21
+ carry[11] = (s11 + (1 << 20)) >> 21
+ s12 += carry[11]
+ s11 -= carry[11] << 21
+
+ s0 += s12 * 666643
+ s1 += s12 * 470296
+ s2 += s12 * 654183
+ s3 -= s12 * 997805
+ s4 += s12 * 136657
+ s5 -= s12 * 683901
+ s12 = 0
+
+ carry[0] = s0 >> 21
+ s1 += carry[0]
+ s0 -= carry[0] << 21
+ carry[1] = s1 >> 21
+ s2 += carry[1]
+ s1 -= carry[1] << 21
+ carry[2] = s2 >> 21
+ s3 += carry[2]
+ s2 -= carry[2] << 21
+ carry[3] = s3 >> 21
+ s4 += carry[3]
+ s3 -= carry[3] << 21
+ carry[4] = s4 >> 21
+ s5 += carry[4]
+ s4 -= carry[4] << 21
+ carry[5] = s5 >> 21
+ s6 += carry[5]
+ s5 -= carry[5] << 21
+ carry[6] = s6 >> 21
+ s7 += carry[6]
+ s6 -= carry[6] << 21
+ carry[7] = s7 >> 21
+ s8 += carry[7]
+ s7 -= carry[7] << 21
+ carry[8] = s8 >> 21
+ s9 += carry[8]
+ s8 -= carry[8] << 21
+ carry[9] = s9 >> 21
+ s10 += carry[9]
+ s9 -= carry[9] << 21
+ carry[10] = s10 >> 21
+ s11 += carry[10]
+ s10 -= carry[10] << 21
+ carry[11] = s11 >> 21
+ s12 += carry[11]
+ s11 -= carry[11] << 21
+
+ s0 += s12 * 666643
+ s1 += s12 * 470296
+ s2 += s12 * 654183
+ s3 -= s12 * 997805
+ s4 += s12 * 136657
+ s5 -= s12 * 683901
+ s12 = 0
+
+ carry[0] = s0 >> 21
+ s1 += carry[0]
+ s0 -= carry[0] << 21
+ carry[1] = s1 >> 21
+ s2 += carry[1]
+ s1 -= carry[1] << 21
+ carry[2] = s2 >> 21
+ s3 += carry[2]
+ s2 -= carry[2] << 21
+ carry[3] = s3 >> 21
+ s4 += carry[3]
+ s3 -= carry[3] << 21
+ carry[4] = s4 >> 21
+ s5 += carry[4]
+ s4 -= carry[4] << 21
+ carry[5] = s5 >> 21
+ s6 += carry[5]
+ s5 -= carry[5] << 21
+ carry[6] = s6 >> 21
+ s7 += carry[6]
+ s6 -= carry[6] << 21
+ carry[7] = s7 >> 21
+ s8 += carry[7]
+ s7 -= carry[7] << 21
+ carry[8] = s8 >> 21
+ s9 += carry[8]
+ s8 -= carry[8] << 21
+ carry[9] = s9 >> 21
+ s10 += carry[9]
+ s9 -= carry[9] << 21
+ carry[10] = s10 >> 21
+ s11 += carry[10]
+ s10 -= carry[10] << 21
+
+ out[0] = byte(s0 >> 0)
+ out[1] = byte(s0 >> 8)
+ out[2] = byte((s0 >> 16) | (s1 << 5))
+ out[3] = byte(s1 >> 3)
+ out[4] = byte(s1 >> 11)
+ out[5] = byte((s1 >> 19) | (s2 << 2))
+ out[6] = byte(s2 >> 6)
+ out[7] = byte((s2 >> 14) | (s3 << 7))
+ out[8] = byte(s3 >> 1)
+ out[9] = byte(s3 >> 9)
+ out[10] = byte((s3 >> 17) | (s4 << 4))
+ out[11] = byte(s4 >> 4)
+ out[12] = byte(s4 >> 12)
+ out[13] = byte((s4 >> 20) | (s5 << 1))
+ out[14] = byte(s5 >> 7)
+ out[15] = byte((s5 >> 15) | (s6 << 6))
+ out[16] = byte(s6 >> 2)
+ out[17] = byte(s6 >> 10)
+ out[18] = byte((s6 >> 18) | (s7 << 3))
+ out[19] = byte(s7 >> 5)
+ out[20] = byte(s7 >> 13)
+ out[21] = byte(s8 >> 0)
+ out[22] = byte(s8 >> 8)
+ out[23] = byte((s8 >> 16) | (s9 << 5))
+ out[24] = byte(s9 >> 3)
+ out[25] = byte(s9 >> 11)
+ out[26] = byte((s9 >> 19) | (s10 << 2))
+ out[27] = byte(s10 >> 6)
+ out[28] = byte((s10 >> 14) | (s11 << 7))
+ out[29] = byte(s11 >> 1)
+ out[30] = byte(s11 >> 9)
+ out[31] = byte(s11 >> 17)
+}
+
+// order is the order of Curve25519 in little-endian form.
+var order = [4]uint64{0x5812631a5cf5d3ed, 0x14def9dea2f79cd6, 0, 0x1000000000000000}
+
+// ScMinimal returns true if the given scalar is less than the order of the
+// curve.
+func ScMinimal(scalar *[32]byte) bool {
+ for i := 3; ; i-- {
+ v := binary.LittleEndian.Uint64(scalar[i*8:])
+ if v > order[i] {
+ return false
+ } else if v < order[i] {
+ break
+ } else if i == 0 {
+ return false
+ }
+ }
+
+ return true
+}
diff --git a/vendor/golang.org/x/net/AUTHORS b/vendor/golang.org/x/net/AUTHORS
new file mode 100644
index 0000000..15167cd
--- /dev/null
+++ b/vendor/golang.org/x/net/AUTHORS
@@ -0,0 +1,3 @@
+# This source code refers to The Go Authors for copyright purposes.
+# The master list of authors is in the main Go distribution,
+# visible at http://tip.golang.org/AUTHORS.
diff --git a/vendor/golang.org/x/net/CONTRIBUTORS b/vendor/golang.org/x/net/CONTRIBUTORS
new file mode 100644
index 0000000..1c4577e
--- /dev/null
+++ b/vendor/golang.org/x/net/CONTRIBUTORS
@@ -0,0 +1,3 @@
+# This source code was written by the Go contributors.
+# The master list of contributors is in the main Go distribution,
+# visible at http://tip.golang.org/CONTRIBUTORS.
diff --git a/vendor/golang.org/x/net/LICENSE b/vendor/golang.org/x/net/LICENSE
new file mode 100644
index 0000000..6a66aea
--- /dev/null
+++ b/vendor/golang.org/x/net/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+ * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/golang.org/x/net/PATENTS b/vendor/golang.org/x/net/PATENTS
new file mode 100644
index 0000000..7330990
--- /dev/null
+++ b/vendor/golang.org/x/net/PATENTS
@@ -0,0 +1,22 @@
+Additional IP Rights Grant (Patents)
+
+"This implementation" means the copyrightable works distributed by
+Google as part of the Go project.
+
+Google hereby grants to You a perpetual, worldwide, non-exclusive,
+no-charge, royalty-free, irrevocable (except as stated in this section)
+patent license to make, have made, use, offer to sell, sell, import,
+transfer and otherwise run, modify and propagate the contents of this
+implementation of Go, where such license applies only to those patent
+claims, both currently owned or controlled by Google and acquired in
+the future, licensable by Google that are necessarily infringed by this
+implementation of Go. This grant does not include claims that would be
+infringed only as a consequence of further modification of this
+implementation. If you or your agent or exclusive licensee institute or
+order or agree to the institution of patent litigation against any
+entity (including a cross-claim or counterclaim in a lawsuit) alleging
+that this implementation of Go or any code incorporated within this
+implementation of Go constitutes direct or contributory patent
+infringement, or inducement of patent infringement, then any patent
+rights granted to you under this License for this implementation of Go
+shall terminate as of the date such litigation is filed.
diff --git a/vendor/golang.org/x/net/bpf/asm.go b/vendor/golang.org/x/net/bpf/asm.go
new file mode 100644
index 0000000..15e21b1
--- /dev/null
+++ b/vendor/golang.org/x/net/bpf/asm.go
@@ -0,0 +1,41 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package bpf
+
+import "fmt"
+
+// Assemble converts insts into raw instructions suitable for loading
+// into a BPF virtual machine.
+//
+// Currently, no optimization is attempted, the assembled program flow
+// is exactly as provided.
+func Assemble(insts []Instruction) ([]RawInstruction, error) {
+ ret := make([]RawInstruction, len(insts))
+ var err error
+ for i, inst := range insts {
+ ret[i], err = inst.Assemble()
+ if err != nil {
+ return nil, fmt.Errorf("assembling instruction %d: %s", i+1, err)
+ }
+ }
+ return ret, nil
+}
+
+// Disassemble attempts to parse raw back into
+// Instructions. Unrecognized RawInstructions are assumed to be an
+// extension not implemented by this package, and are passed through
+// unchanged to the output. The allDecoded value reports whether insts
+// contains no RawInstructions.
+func Disassemble(raw []RawInstruction) (insts []Instruction, allDecoded bool) {
+ insts = make([]Instruction, len(raw))
+ allDecoded = true
+ for i, r := range raw {
+ insts[i] = r.Disassemble()
+ if _, ok := insts[i].(RawInstruction); ok {
+ allDecoded = false
+ }
+ }
+ return insts, allDecoded
+}
diff --git a/vendor/golang.org/x/net/bpf/constants.go b/vendor/golang.org/x/net/bpf/constants.go
new file mode 100644
index 0000000..12f3ee8
--- /dev/null
+++ b/vendor/golang.org/x/net/bpf/constants.go
@@ -0,0 +1,222 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package bpf
+
+// A Register is a register of the BPF virtual machine.
+type Register uint16
+
+const (
+ // RegA is the accumulator register. RegA is always the
+ // destination register of ALU operations.
+ RegA Register = iota
+ // RegX is the indirection register, used by LoadIndirect
+ // operations.
+ RegX
+)
+
+// An ALUOp is an arithmetic or logic operation.
+type ALUOp uint16
+
+// ALU binary operation types.
+const (
+ ALUOpAdd ALUOp = iota << 4
+ ALUOpSub
+ ALUOpMul
+ ALUOpDiv
+ ALUOpOr
+ ALUOpAnd
+ ALUOpShiftLeft
+ ALUOpShiftRight
+ aluOpNeg // Not exported because it's the only unary ALU operation, and gets its own instruction type.
+ ALUOpMod
+ ALUOpXor
+)
+
+// A JumpTest is a comparison operator used in conditional jumps.
+type JumpTest uint16
+
+// Supported operators for conditional jumps.
+// K can be RegX for JumpIfX
+const (
+ // K == A
+ JumpEqual JumpTest = iota
+ // K != A
+ JumpNotEqual
+ // K > A
+ JumpGreaterThan
+ // K < A
+ JumpLessThan
+ // K >= A
+ JumpGreaterOrEqual
+ // K <= A
+ JumpLessOrEqual
+ // K & A != 0
+ JumpBitsSet
+ // K & A == 0
+ JumpBitsNotSet
+)
+
+// An Extension is a function call provided by the kernel that
+// performs advanced operations that are expensive or impossible
+// within the BPF virtual machine.
+//
+// Extensions are only implemented by the Linux kernel.
+//
+// TODO: should we prune this list? Some of these extensions seem
+// either broken or near-impossible to use correctly, whereas other
+// (len, random, ifindex) are quite useful.
+type Extension int
+
+// Extension functions available in the Linux kernel.
+const (
+ // extOffset is the negative maximum number of instructions used
+ // to load instructions by overloading the K argument.
+ extOffset = -0x1000
+ // ExtLen returns the length of the packet.
+ ExtLen Extension = 1
+ // ExtProto returns the packet's L3 protocol type.
+ ExtProto Extension = 0
+ // ExtType returns the packet's type (skb->pkt_type in the kernel)
+ //
+ // TODO: better documentation. How nice an API do we want to
+ // provide for these esoteric extensions?
+ ExtType Extension = 4
+ // ExtPayloadOffset returns the offset of the packet payload, or
+ // the first protocol header that the kernel does not know how to
+ // parse.
+ ExtPayloadOffset Extension = 52
+ // ExtInterfaceIndex returns the index of the interface on which
+ // the packet was received.
+ ExtInterfaceIndex Extension = 8
+ // ExtNetlinkAttr returns the netlink attribute of type X at
+ // offset A.
+ ExtNetlinkAttr Extension = 12
+ // ExtNetlinkAttrNested returns the nested netlink attribute of
+ // type X at offset A.
+ ExtNetlinkAttrNested Extension = 16
+ // ExtMark returns the packet's mark value.
+ ExtMark Extension = 20
+ // ExtQueue returns the packet's assigned hardware queue.
+ ExtQueue Extension = 24
+ // ExtLinkLayerType returns the packet's hardware address type
+ // (e.g. Ethernet, Infiniband).
+ ExtLinkLayerType Extension = 28
+ // ExtRXHash returns the packets receive hash.
+ //
+ // TODO: figure out what this rxhash actually is.
+ ExtRXHash Extension = 32
+ // ExtCPUID returns the ID of the CPU processing the current
+ // packet.
+ ExtCPUID Extension = 36
+ // ExtVLANTag returns the packet's VLAN tag.
+ ExtVLANTag Extension = 44
+ // ExtVLANTagPresent returns non-zero if the packet has a VLAN
+ // tag.
+ //
+ // TODO: I think this might be a lie: it reads bit 0x1000 of the
+ // VLAN header, which changed meaning in recent revisions of the
+ // spec - this extension may now return meaningless information.
+ ExtVLANTagPresent Extension = 48
+ // ExtVLANProto returns 0x8100 if the frame has a VLAN header,
+ // 0x88a8 if the frame has a "Q-in-Q" double VLAN header, or some
+ // other value if no VLAN information is present.
+ ExtVLANProto Extension = 60
+ // ExtRand returns a uniformly random uint32.
+ ExtRand Extension = 56
+)
+
+// The following gives names to various bit patterns used in opcode construction.
+
+const (
+ opMaskCls uint16 = 0x7
+ // opClsLoad masks
+ opMaskLoadDest = 0x01
+ opMaskLoadWidth = 0x18
+ opMaskLoadMode = 0xe0
+ // opClsALU & opClsJump
+ opMaskOperand = 0x08
+ opMaskOperator = 0xf0
+)
+
+const (
+ // +---------------+-----------------+---+---+---+
+ // | AddrMode (3b) | LoadWidth (2b) | 0 | 0 | 0 |
+ // +---------------+-----------------+---+---+---+
+ opClsLoadA uint16 = iota
+ // +---------------+-----------------+---+---+---+
+ // | AddrMode (3b) | LoadWidth (2b) | 0 | 0 | 1 |
+ // +---------------+-----------------+---+---+---+
+ opClsLoadX
+ // +---+---+---+---+---+---+---+---+
+ // | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
+ // +---+---+---+---+---+---+---+---+
+ opClsStoreA
+ // +---+---+---+---+---+---+---+---+
+ // | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
+ // +---+---+---+---+---+---+---+---+
+ opClsStoreX
+ // +---------------+-----------------+---+---+---+
+ // | Operator (4b) | OperandSrc (1b) | 1 | 0 | 0 |
+ // +---------------+-----------------+---+---+---+
+ opClsALU
+ // +-----------------------------+---+---+---+---+
+ // | TestOperator (4b) | 0 | 1 | 0 | 1 |
+ // +-----------------------------+---+---+---+---+
+ opClsJump
+ // +---+-------------------------+---+---+---+---+
+ // | 0 | 0 | 0 | RetSrc (1b) | 0 | 1 | 1 | 0 |
+ // +---+-------------------------+---+---+---+---+
+ opClsReturn
+ // +---+-------------------------+---+---+---+---+
+ // | 0 | 0 | 0 | TXAorTAX (1b) | 0 | 1 | 1 | 1 |
+ // +---+-------------------------+---+---+---+---+
+ opClsMisc
+)
+
+const (
+ opAddrModeImmediate uint16 = iota << 5
+ opAddrModeAbsolute
+ opAddrModeIndirect
+ opAddrModeScratch
+ opAddrModePacketLen // actually an extension, not an addressing mode.
+ opAddrModeMemShift
+)
+
+const (
+ opLoadWidth4 uint16 = iota << 3
+ opLoadWidth2
+ opLoadWidth1
+)
+
+// Operand for ALU and Jump instructions
+type opOperand uint16
+
+// Supported operand sources.
+const (
+ opOperandConstant opOperand = iota << 3
+ opOperandX
+)
+
+// An jumpOp is a conditional jump condition.
+type jumpOp uint16
+
+// Supported jump conditions.
+const (
+ opJumpAlways jumpOp = iota << 4
+ opJumpEqual
+ opJumpGT
+ opJumpGE
+ opJumpSet
+)
+
+const (
+ opRetSrcConstant uint16 = iota << 4
+ opRetSrcA
+)
+
+const (
+ opMiscTAX = 0x00
+ opMiscTXA = 0x80
+)
diff --git a/vendor/golang.org/x/net/bpf/doc.go b/vendor/golang.org/x/net/bpf/doc.go
new file mode 100644
index 0000000..ae62feb
--- /dev/null
+++ b/vendor/golang.org/x/net/bpf/doc.go
@@ -0,0 +1,82 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+/*
+
+Package bpf implements marshaling and unmarshaling of programs for the
+Berkeley Packet Filter virtual machine, and provides a Go implementation
+of the virtual machine.
+
+BPF's main use is to specify a packet filter for network taps, so that
+the kernel doesn't have to expensively copy every packet it sees to
+userspace. However, it's been repurposed to other areas where running
+user code in-kernel is needed. For example, Linux's seccomp uses BPF
+to apply security policies to system calls. For simplicity, this
+documentation refers only to packets, but other uses of BPF have their
+own data payloads.
+
+BPF programs run in a restricted virtual machine. It has almost no
+access to kernel functions, and while conditional branches are
+allowed, they can only jump forwards, to guarantee that there are no
+infinite loops.
+
+The virtual machine
+
+The BPF VM is an accumulator machine. Its main register, called
+register A, is an implicit source and destination in all arithmetic
+and logic operations. The machine also has 16 scratch registers for
+temporary storage, and an indirection register (register X) for
+indirect memory access. All registers are 32 bits wide.
+
+Each run of a BPF program is given one packet, which is placed in the
+VM's read-only "main memory". LoadAbsolute and LoadIndirect
+instructions can fetch up to 32 bits at a time into register A for
+examination.
+
+The goal of a BPF program is to produce and return a verdict (uint32),
+which tells the kernel what to do with the packet. In the context of
+packet filtering, the returned value is the number of bytes of the
+packet to forward to userspace, or 0 to ignore the packet. Other
+contexts like seccomp define their own return values.
+
+In order to simplify programs, attempts to read past the end of the
+packet terminate the program execution with a verdict of 0 (ignore
+packet). This means that the vast majority of BPF programs don't need
+to do any explicit bounds checking.
+
+In addition to the bytes of the packet, some BPF programs have access
+to extensions, which are essentially calls to kernel utility
+functions. Currently, the only extensions supported by this package
+are the Linux packet filter extensions.
+
+Examples
+
+This packet filter selects all ARP packets.
+
+ bpf.Assemble([]bpf.Instruction{
+ // Load "EtherType" field from the ethernet header.
+ bpf.LoadAbsolute{Off: 12, Size: 2},
+ // Skip over the next instruction if EtherType is not ARP.
+ bpf.JumpIf{Cond: bpf.JumpNotEqual, Val: 0x0806, SkipTrue: 1},
+ // Verdict is "send up to 4k of the packet to userspace."
+ bpf.RetConstant{Val: 4096},
+ // Verdict is "ignore packet."
+ bpf.RetConstant{Val: 0},
+ })
+
+This packet filter captures a random 1% sample of traffic.
+
+ bpf.Assemble([]bpf.Instruction{
+ // Get a 32-bit random number from the Linux kernel.
+ bpf.LoadExtension{Num: bpf.ExtRand},
+ // 1% dice roll?
+ bpf.JumpIf{Cond: bpf.JumpLessThan, Val: 2^32/100, SkipFalse: 1},
+ // Capture.
+ bpf.RetConstant{Val: 4096},
+ // Ignore.
+ bpf.RetConstant{Val: 0},
+ })
+
+*/
+package bpf // import "golang.org/x/net/bpf"
diff --git a/vendor/golang.org/x/net/bpf/instructions.go b/vendor/golang.org/x/net/bpf/instructions.go
new file mode 100644
index 0000000..3cffcaa
--- /dev/null
+++ b/vendor/golang.org/x/net/bpf/instructions.go
@@ -0,0 +1,726 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package bpf
+
+import "fmt"
+
+// An Instruction is one instruction executed by the BPF virtual
+// machine.
+type Instruction interface {
+ // Assemble assembles the Instruction into a RawInstruction.
+ Assemble() (RawInstruction, error)
+}
+
+// A RawInstruction is a raw BPF virtual machine instruction.
+type RawInstruction struct {
+ // Operation to execute.
+ Op uint16
+ // For conditional jump instructions, the number of instructions
+ // to skip if the condition is true/false.
+ Jt uint8
+ Jf uint8
+ // Constant parameter. The meaning depends on the Op.
+ K uint32
+}
+
+// Assemble implements the Instruction Assemble method.
+func (ri RawInstruction) Assemble() (RawInstruction, error) { return ri, nil }
+
+// Disassemble parses ri into an Instruction and returns it. If ri is
+// not recognized by this package, ri itself is returned.
+func (ri RawInstruction) Disassemble() Instruction {
+ switch ri.Op & opMaskCls {
+ case opClsLoadA, opClsLoadX:
+ reg := Register(ri.Op & opMaskLoadDest)
+ sz := 0
+ switch ri.Op & opMaskLoadWidth {
+ case opLoadWidth4:
+ sz = 4
+ case opLoadWidth2:
+ sz = 2
+ case opLoadWidth1:
+ sz = 1
+ default:
+ return ri
+ }
+ switch ri.Op & opMaskLoadMode {
+ case opAddrModeImmediate:
+ if sz != 4 {
+ return ri
+ }
+ return LoadConstant{Dst: reg, Val: ri.K}
+ case opAddrModeScratch:
+ if sz != 4 || ri.K > 15 {
+ return ri
+ }
+ return LoadScratch{Dst: reg, N: int(ri.K)}
+ case opAddrModeAbsolute:
+ if ri.K > extOffset+0xffffffff {
+ return LoadExtension{Num: Extension(-extOffset + ri.K)}
+ }
+ return LoadAbsolute{Size: sz, Off: ri.K}
+ case opAddrModeIndirect:
+ return LoadIndirect{Size: sz, Off: ri.K}
+ case opAddrModePacketLen:
+ if sz != 4 {
+ return ri
+ }
+ return LoadExtension{Num: ExtLen}
+ case opAddrModeMemShift:
+ return LoadMemShift{Off: ri.K}
+ default:
+ return ri
+ }
+
+ case opClsStoreA:
+ if ri.Op != opClsStoreA || ri.K > 15 {
+ return ri
+ }
+ return StoreScratch{Src: RegA, N: int(ri.K)}
+
+ case opClsStoreX:
+ if ri.Op != opClsStoreX || ri.K > 15 {
+ return ri
+ }
+ return StoreScratch{Src: RegX, N: int(ri.K)}
+
+ case opClsALU:
+ switch op := ALUOp(ri.Op & opMaskOperator); op {
+ case ALUOpAdd, ALUOpSub, ALUOpMul, ALUOpDiv, ALUOpOr, ALUOpAnd, ALUOpShiftLeft, ALUOpShiftRight, ALUOpMod, ALUOpXor:
+ switch operand := opOperand(ri.Op & opMaskOperand); operand {
+ case opOperandX:
+ return ALUOpX{Op: op}
+ case opOperandConstant:
+ return ALUOpConstant{Op: op, Val: ri.K}
+ default:
+ return ri
+ }
+ case aluOpNeg:
+ return NegateA{}
+ default:
+ return ri
+ }
+
+ case opClsJump:
+ switch op := jumpOp(ri.Op & opMaskOperator); op {
+ case opJumpAlways:
+ return Jump{Skip: ri.K}
+ case opJumpEqual, opJumpGT, opJumpGE, opJumpSet:
+ cond, skipTrue, skipFalse := jumpOpToTest(op, ri.Jt, ri.Jf)
+ switch operand := opOperand(ri.Op & opMaskOperand); operand {
+ case opOperandX:
+ return JumpIfX{Cond: cond, SkipTrue: skipTrue, SkipFalse: skipFalse}
+ case opOperandConstant:
+ return JumpIf{Cond: cond, Val: ri.K, SkipTrue: skipTrue, SkipFalse: skipFalse}
+ default:
+ return ri
+ }
+ default:
+ return ri
+ }
+
+ case opClsReturn:
+ switch ri.Op {
+ case opClsReturn | opRetSrcA:
+ return RetA{}
+ case opClsReturn | opRetSrcConstant:
+ return RetConstant{Val: ri.K}
+ default:
+ return ri
+ }
+
+ case opClsMisc:
+ switch ri.Op {
+ case opClsMisc | opMiscTAX:
+ return TAX{}
+ case opClsMisc | opMiscTXA:
+ return TXA{}
+ default:
+ return ri
+ }
+
+ default:
+ panic("unreachable") // switch is exhaustive on the bit pattern
+ }
+}
+
+func jumpOpToTest(op jumpOp, skipTrue uint8, skipFalse uint8) (JumpTest, uint8, uint8) {
+ var test JumpTest
+
+ // Decode "fake" jump conditions that don't appear in machine code
+ // Ensures the Assemble -> Disassemble stage recreates the same instructions
+ // See https://github.com/golang/go/issues/18470
+ if skipTrue == 0 {
+ switch op {
+ case opJumpEqual:
+ test = JumpNotEqual
+ case opJumpGT:
+ test = JumpLessOrEqual
+ case opJumpGE:
+ test = JumpLessThan
+ case opJumpSet:
+ test = JumpBitsNotSet
+ }
+
+ return test, skipFalse, 0
+ }
+
+ switch op {
+ case opJumpEqual:
+ test = JumpEqual
+ case opJumpGT:
+ test = JumpGreaterThan
+ case opJumpGE:
+ test = JumpGreaterOrEqual
+ case opJumpSet:
+ test = JumpBitsSet
+ }
+
+ return test, skipTrue, skipFalse
+}
+
+// LoadConstant loads Val into register Dst.
+type LoadConstant struct {
+ Dst Register
+ Val uint32
+}
+
+// Assemble implements the Instruction Assemble method.
+func (a LoadConstant) Assemble() (RawInstruction, error) {
+ return assembleLoad(a.Dst, 4, opAddrModeImmediate, a.Val)
+}
+
+// String returns the instruction in assembler notation.
+func (a LoadConstant) String() string {
+ switch a.Dst {
+ case RegA:
+ return fmt.Sprintf("ld #%d", a.Val)
+ case RegX:
+ return fmt.Sprintf("ldx #%d", a.Val)
+ default:
+ return fmt.Sprintf("unknown instruction: %#v", a)
+ }
+}
+
+// LoadScratch loads scratch[N] into register Dst.
+type LoadScratch struct {
+ Dst Register
+ N int // 0-15
+}
+
+// Assemble implements the Instruction Assemble method.
+func (a LoadScratch) Assemble() (RawInstruction, error) {
+ if a.N < 0 || a.N > 15 {
+ return RawInstruction{}, fmt.Errorf("invalid scratch slot %d", a.N)
+ }
+ return assembleLoad(a.Dst, 4, opAddrModeScratch, uint32(a.N))
+}
+
+// String returns the instruction in assembler notation.
+func (a LoadScratch) String() string {
+ switch a.Dst {
+ case RegA:
+ return fmt.Sprintf("ld M[%d]", a.N)
+ case RegX:
+ return fmt.Sprintf("ldx M[%d]", a.N)
+ default:
+ return fmt.Sprintf("unknown instruction: %#v", a)
+ }
+}
+
+// LoadAbsolute loads packet[Off:Off+Size] as an integer value into
+// register A.
+type LoadAbsolute struct {
+ Off uint32
+ Size int // 1, 2 or 4
+}
+
+// Assemble implements the Instruction Assemble method.
+func (a LoadAbsolute) Assemble() (RawInstruction, error) {
+ return assembleLoad(RegA, a.Size, opAddrModeAbsolute, a.Off)
+}
+
+// String returns the instruction in assembler notation.
+func (a LoadAbsolute) String() string {
+ switch a.Size {
+ case 1: // byte
+ return fmt.Sprintf("ldb [%d]", a.Off)
+ case 2: // half word
+ return fmt.Sprintf("ldh [%d]", a.Off)
+ case 4: // word
+ if a.Off > extOffset+0xffffffff {
+ return LoadExtension{Num: Extension(a.Off + 0x1000)}.String()
+ }
+ return fmt.Sprintf("ld [%d]", a.Off)
+ default:
+ return fmt.Sprintf("unknown instruction: %#v", a)
+ }
+}
+
+// LoadIndirect loads packet[X+Off:X+Off+Size] as an integer value
+// into register A.
+type LoadIndirect struct {
+ Off uint32
+ Size int // 1, 2 or 4
+}
+
+// Assemble implements the Instruction Assemble method.
+func (a LoadIndirect) Assemble() (RawInstruction, error) {
+ return assembleLoad(RegA, a.Size, opAddrModeIndirect, a.Off)
+}
+
+// String returns the instruction in assembler notation.
+func (a LoadIndirect) String() string {
+ switch a.Size {
+ case 1: // byte
+ return fmt.Sprintf("ldb [x + %d]", a.Off)
+ case 2: // half word
+ return fmt.Sprintf("ldh [x + %d]", a.Off)
+ case 4: // word
+ return fmt.Sprintf("ld [x + %d]", a.Off)
+ default:
+ return fmt.Sprintf("unknown instruction: %#v", a)
+ }
+}
+
+// LoadMemShift multiplies the first 4 bits of the byte at packet[Off]
+// by 4 and stores the result in register X.
+//
+// This instruction is mainly useful to load into X the length of an
+// IPv4 packet header in a single instruction, rather than have to do
+// the arithmetic on the header's first byte by hand.
+type LoadMemShift struct {
+ Off uint32
+}
+
+// Assemble implements the Instruction Assemble method.
+func (a LoadMemShift) Assemble() (RawInstruction, error) {
+ return assembleLoad(RegX, 1, opAddrModeMemShift, a.Off)
+}
+
+// String returns the instruction in assembler notation.
+func (a LoadMemShift) String() string {
+ return fmt.Sprintf("ldx 4*([%d]&0xf)", a.Off)
+}
+
+// LoadExtension invokes a linux-specific extension and stores the
+// result in register A.
+type LoadExtension struct {
+ Num Extension
+}
+
+// Assemble implements the Instruction Assemble method.
+func (a LoadExtension) Assemble() (RawInstruction, error) {
+ if a.Num == ExtLen {
+ return assembleLoad(RegA, 4, opAddrModePacketLen, 0)
+ }
+ return assembleLoad(RegA, 4, opAddrModeAbsolute, uint32(extOffset+a.Num))
+}
+
+// String returns the instruction in assembler notation.
+func (a LoadExtension) String() string {
+ switch a.Num {
+ case ExtLen:
+ return "ld #len"
+ case ExtProto:
+ return "ld #proto"
+ case ExtType:
+ return "ld #type"
+ case ExtPayloadOffset:
+ return "ld #poff"
+ case ExtInterfaceIndex:
+ return "ld #ifidx"
+ case ExtNetlinkAttr:
+ return "ld #nla"
+ case ExtNetlinkAttrNested:
+ return "ld #nlan"
+ case ExtMark:
+ return "ld #mark"
+ case ExtQueue:
+ return "ld #queue"
+ case ExtLinkLayerType:
+ return "ld #hatype"
+ case ExtRXHash:
+ return "ld #rxhash"
+ case ExtCPUID:
+ return "ld #cpu"
+ case ExtVLANTag:
+ return "ld #vlan_tci"
+ case ExtVLANTagPresent:
+ return "ld #vlan_avail"
+ case ExtVLANProto:
+ return "ld #vlan_tpid"
+ case ExtRand:
+ return "ld #rand"
+ default:
+ return fmt.Sprintf("unknown instruction: %#v", a)
+ }
+}
+
+// StoreScratch stores register Src into scratch[N].
+type StoreScratch struct {
+ Src Register
+ N int // 0-15
+}
+
+// Assemble implements the Instruction Assemble method.
+func (a StoreScratch) Assemble() (RawInstruction, error) {
+ if a.N < 0 || a.N > 15 {
+ return RawInstruction{}, fmt.Errorf("invalid scratch slot %d", a.N)
+ }
+ var op uint16
+ switch a.Src {
+ case RegA:
+ op = opClsStoreA
+ case RegX:
+ op = opClsStoreX
+ default:
+ return RawInstruction{}, fmt.Errorf("invalid source register %v", a.Src)
+ }
+
+ return RawInstruction{
+ Op: op,
+ K: uint32(a.N),
+ }, nil
+}
+
+// String returns the instruction in assembler notation.
+func (a StoreScratch) String() string {
+ switch a.Src {
+ case RegA:
+ return fmt.Sprintf("st M[%d]", a.N)
+ case RegX:
+ return fmt.Sprintf("stx M[%d]", a.N)
+ default:
+ return fmt.Sprintf("unknown instruction: %#v", a)
+ }
+}
+
+// ALUOpConstant executes A = A Val.
+type ALUOpConstant struct {
+ Op ALUOp
+ Val uint32
+}
+
+// Assemble implements the Instruction Assemble method.
+func (a ALUOpConstant) Assemble() (RawInstruction, error) {
+ return RawInstruction{
+ Op: opClsALU | uint16(opOperandConstant) | uint16(a.Op),
+ K: a.Val,
+ }, nil
+}
+
+// String returns the instruction in assembler notation.
+func (a ALUOpConstant) String() string {
+ switch a.Op {
+ case ALUOpAdd:
+ return fmt.Sprintf("add #%d", a.Val)
+ case ALUOpSub:
+ return fmt.Sprintf("sub #%d", a.Val)
+ case ALUOpMul:
+ return fmt.Sprintf("mul #%d", a.Val)
+ case ALUOpDiv:
+ return fmt.Sprintf("div #%d", a.Val)
+ case ALUOpMod:
+ return fmt.Sprintf("mod #%d", a.Val)
+ case ALUOpAnd:
+ return fmt.Sprintf("and #%d", a.Val)
+ case ALUOpOr:
+ return fmt.Sprintf("or #%d", a.Val)
+ case ALUOpXor:
+ return fmt.Sprintf("xor #%d", a.Val)
+ case ALUOpShiftLeft:
+ return fmt.Sprintf("lsh #%d", a.Val)
+ case ALUOpShiftRight:
+ return fmt.Sprintf("rsh #%d", a.Val)
+ default:
+ return fmt.Sprintf("unknown instruction: %#v", a)
+ }
+}
+
+// ALUOpX executes A = A X
+type ALUOpX struct {
+ Op ALUOp
+}
+
+// Assemble implements the Instruction Assemble method.
+func (a ALUOpX) Assemble() (RawInstruction, error) {
+ return RawInstruction{
+ Op: opClsALU | uint16(opOperandX) | uint16(a.Op),
+ }, nil
+}
+
+// String returns the instruction in assembler notation.
+func (a ALUOpX) String() string {
+ switch a.Op {
+ case ALUOpAdd:
+ return "add x"
+ case ALUOpSub:
+ return "sub x"
+ case ALUOpMul:
+ return "mul x"
+ case ALUOpDiv:
+ return "div x"
+ case ALUOpMod:
+ return "mod x"
+ case ALUOpAnd:
+ return "and x"
+ case ALUOpOr:
+ return "or x"
+ case ALUOpXor:
+ return "xor x"
+ case ALUOpShiftLeft:
+ return "lsh x"
+ case ALUOpShiftRight:
+ return "rsh x"
+ default:
+ return fmt.Sprintf("unknown instruction: %#v", a)
+ }
+}
+
+// NegateA executes A = -A.
+type NegateA struct{}
+
+// Assemble implements the Instruction Assemble method.
+func (a NegateA) Assemble() (RawInstruction, error) {
+ return RawInstruction{
+ Op: opClsALU | uint16(aluOpNeg),
+ }, nil
+}
+
+// String returns the instruction in assembler notation.
+func (a NegateA) String() string {
+ return fmt.Sprintf("neg")
+}
+
+// Jump skips the following Skip instructions in the program.
+type Jump struct {
+ Skip uint32
+}
+
+// Assemble implements the Instruction Assemble method.
+func (a Jump) Assemble() (RawInstruction, error) {
+ return RawInstruction{
+ Op: opClsJump | uint16(opJumpAlways),
+ K: a.Skip,
+ }, nil
+}
+
+// String returns the instruction in assembler notation.
+func (a Jump) String() string {
+ return fmt.Sprintf("ja %d", a.Skip)
+}
+
+// JumpIf skips the following Skip instructions in the program if A
+// Val is true.
+type JumpIf struct {
+ Cond JumpTest
+ Val uint32
+ SkipTrue uint8
+ SkipFalse uint8
+}
+
+// Assemble implements the Instruction Assemble method.
+func (a JumpIf) Assemble() (RawInstruction, error) {
+ return jumpToRaw(a.Cond, opOperandConstant, a.Val, a.SkipTrue, a.SkipFalse)
+}
+
+// String returns the instruction in assembler notation.
+func (a JumpIf) String() string {
+ return jumpToString(a.Cond, fmt.Sprintf("#%d", a.Val), a.SkipTrue, a.SkipFalse)
+}
+
+// JumpIfX skips the following Skip instructions in the program if A
+// X is true.
+type JumpIfX struct {
+ Cond JumpTest
+ SkipTrue uint8
+ SkipFalse uint8
+}
+
+// Assemble implements the Instruction Assemble method.
+func (a JumpIfX) Assemble() (RawInstruction, error) {
+ return jumpToRaw(a.Cond, opOperandX, 0, a.SkipTrue, a.SkipFalse)
+}
+
+// String returns the instruction in assembler notation.
+func (a JumpIfX) String() string {
+ return jumpToString(a.Cond, "x", a.SkipTrue, a.SkipFalse)
+}
+
+// jumpToRaw assembles a jump instruction into a RawInstruction
+func jumpToRaw(test JumpTest, operand opOperand, k uint32, skipTrue, skipFalse uint8) (RawInstruction, error) {
+ var (
+ cond jumpOp
+ flip bool
+ )
+ switch test {
+ case JumpEqual:
+ cond = opJumpEqual
+ case JumpNotEqual:
+ cond, flip = opJumpEqual, true
+ case JumpGreaterThan:
+ cond = opJumpGT
+ case JumpLessThan:
+ cond, flip = opJumpGE, true
+ case JumpGreaterOrEqual:
+ cond = opJumpGE
+ case JumpLessOrEqual:
+ cond, flip = opJumpGT, true
+ case JumpBitsSet:
+ cond = opJumpSet
+ case JumpBitsNotSet:
+ cond, flip = opJumpSet, true
+ default:
+ return RawInstruction{}, fmt.Errorf("unknown JumpTest %v", test)
+ }
+ jt, jf := skipTrue, skipFalse
+ if flip {
+ jt, jf = jf, jt
+ }
+ return RawInstruction{
+ Op: opClsJump | uint16(cond) | uint16(operand),
+ Jt: jt,
+ Jf: jf,
+ K: k,
+ }, nil
+}
+
+// jumpToString converts a jump instruction to assembler notation
+func jumpToString(cond JumpTest, operand string, skipTrue, skipFalse uint8) string {
+ switch cond {
+ // K == A
+ case JumpEqual:
+ return conditionalJump(operand, skipTrue, skipFalse, "jeq", "jneq")
+ // K != A
+ case JumpNotEqual:
+ return fmt.Sprintf("jneq %s,%d", operand, skipTrue)
+ // K > A
+ case JumpGreaterThan:
+ return conditionalJump(operand, skipTrue, skipFalse, "jgt", "jle")
+ // K < A
+ case JumpLessThan:
+ return fmt.Sprintf("jlt %s,%d", operand, skipTrue)
+ // K >= A
+ case JumpGreaterOrEqual:
+ return conditionalJump(operand, skipTrue, skipFalse, "jge", "jlt")
+ // K <= A
+ case JumpLessOrEqual:
+ return fmt.Sprintf("jle %s,%d", operand, skipTrue)
+ // K & A != 0
+ case JumpBitsSet:
+ if skipFalse > 0 {
+ return fmt.Sprintf("jset %s,%d,%d", operand, skipTrue, skipFalse)
+ }
+ return fmt.Sprintf("jset %s,%d", operand, skipTrue)
+ // K & A == 0, there is no assembler instruction for JumpBitNotSet, use JumpBitSet and invert skips
+ case JumpBitsNotSet:
+ return jumpToString(JumpBitsSet, operand, skipFalse, skipTrue)
+ default:
+ return fmt.Sprintf("unknown JumpTest %#v", cond)
+ }
+}
+
+func conditionalJump(operand string, skipTrue, skipFalse uint8, positiveJump, negativeJump string) string {
+ if skipTrue > 0 {
+ if skipFalse > 0 {
+ return fmt.Sprintf("%s %s,%d,%d", positiveJump, operand, skipTrue, skipFalse)
+ }
+ return fmt.Sprintf("%s %s,%d", positiveJump, operand, skipTrue)
+ }
+ return fmt.Sprintf("%s %s,%d", negativeJump, operand, skipFalse)
+}
+
+// RetA exits the BPF program, returning the value of register A.
+type RetA struct{}
+
+// Assemble implements the Instruction Assemble method.
+func (a RetA) Assemble() (RawInstruction, error) {
+ return RawInstruction{
+ Op: opClsReturn | opRetSrcA,
+ }, nil
+}
+
+// String returns the instruction in assembler notation.
+func (a RetA) String() string {
+ return fmt.Sprintf("ret a")
+}
+
+// RetConstant exits the BPF program, returning a constant value.
+type RetConstant struct {
+ Val uint32
+}
+
+// Assemble implements the Instruction Assemble method.
+func (a RetConstant) Assemble() (RawInstruction, error) {
+ return RawInstruction{
+ Op: opClsReturn | opRetSrcConstant,
+ K: a.Val,
+ }, nil
+}
+
+// String returns the instruction in assembler notation.
+func (a RetConstant) String() string {
+ return fmt.Sprintf("ret #%d", a.Val)
+}
+
+// TXA copies the value of register X to register A.
+type TXA struct{}
+
+// Assemble implements the Instruction Assemble method.
+func (a TXA) Assemble() (RawInstruction, error) {
+ return RawInstruction{
+ Op: opClsMisc | opMiscTXA,
+ }, nil
+}
+
+// String returns the instruction in assembler notation.
+func (a TXA) String() string {
+ return fmt.Sprintf("txa")
+}
+
+// TAX copies the value of register A to register X.
+type TAX struct{}
+
+// Assemble implements the Instruction Assemble method.
+func (a TAX) Assemble() (RawInstruction, error) {
+ return RawInstruction{
+ Op: opClsMisc | opMiscTAX,
+ }, nil
+}
+
+// String returns the instruction in assembler notation.
+func (a TAX) String() string {
+ return fmt.Sprintf("tax")
+}
+
+func assembleLoad(dst Register, loadSize int, mode uint16, k uint32) (RawInstruction, error) {
+ var (
+ cls uint16
+ sz uint16
+ )
+ switch dst {
+ case RegA:
+ cls = opClsLoadA
+ case RegX:
+ cls = opClsLoadX
+ default:
+ return RawInstruction{}, fmt.Errorf("invalid target register %v", dst)
+ }
+ switch loadSize {
+ case 1:
+ sz = opLoadWidth1
+ case 2:
+ sz = opLoadWidth2
+ case 4:
+ sz = opLoadWidth4
+ default:
+ return RawInstruction{}, fmt.Errorf("invalid load byte length %d", sz)
+ }
+ return RawInstruction{
+ Op: cls | sz | mode,
+ K: k,
+ }, nil
+}
diff --git a/vendor/golang.org/x/net/bpf/setter.go b/vendor/golang.org/x/net/bpf/setter.go
new file mode 100644
index 0000000..43e35f0
--- /dev/null
+++ b/vendor/golang.org/x/net/bpf/setter.go
@@ -0,0 +1,10 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package bpf
+
+// A Setter is a type which can attach a compiled BPF filter to itself.
+type Setter interface {
+ SetBPF(filter []RawInstruction) error
+}
diff --git a/vendor/golang.org/x/net/bpf/vm.go b/vendor/golang.org/x/net/bpf/vm.go
new file mode 100644
index 0000000..73f57f1
--- /dev/null
+++ b/vendor/golang.org/x/net/bpf/vm.go
@@ -0,0 +1,150 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package bpf
+
+import (
+ "errors"
+ "fmt"
+)
+
+// A VM is an emulated BPF virtual machine.
+type VM struct {
+ filter []Instruction
+}
+
+// NewVM returns a new VM using the input BPF program.
+func NewVM(filter []Instruction) (*VM, error) {
+ if len(filter) == 0 {
+ return nil, errors.New("one or more Instructions must be specified")
+ }
+
+ for i, ins := range filter {
+ check := len(filter) - (i + 1)
+ switch ins := ins.(type) {
+ // Check for out-of-bounds jumps in instructions
+ case Jump:
+ if check <= int(ins.Skip) {
+ return nil, fmt.Errorf("cannot jump %d instructions; jumping past program bounds", ins.Skip)
+ }
+ case JumpIf:
+ if check <= int(ins.SkipTrue) {
+ return nil, fmt.Errorf("cannot jump %d instructions in true case; jumping past program bounds", ins.SkipTrue)
+ }
+ if check <= int(ins.SkipFalse) {
+ return nil, fmt.Errorf("cannot jump %d instructions in false case; jumping past program bounds", ins.SkipFalse)
+ }
+ case JumpIfX:
+ if check <= int(ins.SkipTrue) {
+ return nil, fmt.Errorf("cannot jump %d instructions in true case; jumping past program bounds", ins.SkipTrue)
+ }
+ if check <= int(ins.SkipFalse) {
+ return nil, fmt.Errorf("cannot jump %d instructions in false case; jumping past program bounds", ins.SkipFalse)
+ }
+ // Check for division or modulus by zero
+ case ALUOpConstant:
+ if ins.Val != 0 {
+ break
+ }
+
+ switch ins.Op {
+ case ALUOpDiv, ALUOpMod:
+ return nil, errors.New("cannot divide by zero using ALUOpConstant")
+ }
+ // Check for unknown extensions
+ case LoadExtension:
+ switch ins.Num {
+ case ExtLen:
+ default:
+ return nil, fmt.Errorf("extension %d not implemented", ins.Num)
+ }
+ }
+ }
+
+ // Make sure last instruction is a return instruction
+ switch filter[len(filter)-1].(type) {
+ case RetA, RetConstant:
+ default:
+ return nil, errors.New("BPF program must end with RetA or RetConstant")
+ }
+
+ // Though our VM works using disassembled instructions, we
+ // attempt to assemble the input filter anyway to ensure it is compatible
+ // with an operating system VM.
+ _, err := Assemble(filter)
+
+ return &VM{
+ filter: filter,
+ }, err
+}
+
+// Run runs the VM's BPF program against the input bytes.
+// Run returns the number of bytes accepted by the BPF program, and any errors
+// which occurred while processing the program.
+func (v *VM) Run(in []byte) (int, error) {
+ var (
+ // Registers of the virtual machine
+ regA uint32
+ regX uint32
+ regScratch [16]uint32
+
+ // OK is true if the program should continue processing the next
+ // instruction, or false if not, causing the loop to break
+ ok = true
+ )
+
+ // TODO(mdlayher): implement:
+ // - NegateA:
+ // - would require a change from uint32 registers to int32
+ // registers
+
+ // TODO(mdlayher): add interop tests that check signedness of ALU
+ // operations against kernel implementation, and make sure Go
+ // implementation matches behavior
+
+ for i := 0; i < len(v.filter) && ok; i++ {
+ ins := v.filter[i]
+
+ switch ins := ins.(type) {
+ case ALUOpConstant:
+ regA = aluOpConstant(ins, regA)
+ case ALUOpX:
+ regA, ok = aluOpX(ins, regA, regX)
+ case Jump:
+ i += int(ins.Skip)
+ case JumpIf:
+ jump := jumpIf(ins, regA)
+ i += jump
+ case JumpIfX:
+ jump := jumpIfX(ins, regA, regX)
+ i += jump
+ case LoadAbsolute:
+ regA, ok = loadAbsolute(ins, in)
+ case LoadConstant:
+ regA, regX = loadConstant(ins, regA, regX)
+ case LoadExtension:
+ regA = loadExtension(ins, in)
+ case LoadIndirect:
+ regA, ok = loadIndirect(ins, in, regX)
+ case LoadMemShift:
+ regX, ok = loadMemShift(ins, in)
+ case LoadScratch:
+ regA, regX = loadScratch(ins, regScratch, regA, regX)
+ case RetA:
+ return int(regA), nil
+ case RetConstant:
+ return int(ins.Val), nil
+ case StoreScratch:
+ regScratch = storeScratch(ins, regScratch, regA, regX)
+ case TAX:
+ regX = regA
+ case TXA:
+ regA = regX
+ default:
+ return 0, fmt.Errorf("unknown Instruction at index %d: %T", i, ins)
+ }
+ }
+
+ return 0, nil
+}
diff --git a/vendor/golang.org/x/net/bpf/vm_instructions.go b/vendor/golang.org/x/net/bpf/vm_instructions.go
new file mode 100644
index 0000000..cf8947c
--- /dev/null
+++ b/vendor/golang.org/x/net/bpf/vm_instructions.go
@@ -0,0 +1,182 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package bpf
+
+import (
+ "encoding/binary"
+ "fmt"
+)
+
+func aluOpConstant(ins ALUOpConstant, regA uint32) uint32 {
+ return aluOpCommon(ins.Op, regA, ins.Val)
+}
+
+func aluOpX(ins ALUOpX, regA uint32, regX uint32) (uint32, bool) {
+ // Guard against division or modulus by zero by terminating
+ // the program, as the OS BPF VM does
+ if regX == 0 {
+ switch ins.Op {
+ case ALUOpDiv, ALUOpMod:
+ return 0, false
+ }
+ }
+
+ return aluOpCommon(ins.Op, regA, regX), true
+}
+
+func aluOpCommon(op ALUOp, regA uint32, value uint32) uint32 {
+ switch op {
+ case ALUOpAdd:
+ return regA + value
+ case ALUOpSub:
+ return regA - value
+ case ALUOpMul:
+ return regA * value
+ case ALUOpDiv:
+ // Division by zero not permitted by NewVM and aluOpX checks
+ return regA / value
+ case ALUOpOr:
+ return regA | value
+ case ALUOpAnd:
+ return regA & value
+ case ALUOpShiftLeft:
+ return regA << value
+ case ALUOpShiftRight:
+ return regA >> value
+ case ALUOpMod:
+ // Modulus by zero not permitted by NewVM and aluOpX checks
+ return regA % value
+ case ALUOpXor:
+ return regA ^ value
+ default:
+ return regA
+ }
+}
+
+func jumpIf(ins JumpIf, regA uint32) int {
+ return jumpIfCommon(ins.Cond, ins.SkipTrue, ins.SkipFalse, regA, ins.Val)
+}
+
+func jumpIfX(ins JumpIfX, regA uint32, regX uint32) int {
+ return jumpIfCommon(ins.Cond, ins.SkipTrue, ins.SkipFalse, regA, regX)
+}
+
+func jumpIfCommon(cond JumpTest, skipTrue, skipFalse uint8, regA uint32, value uint32) int {
+ var ok bool
+
+ switch cond {
+ case JumpEqual:
+ ok = regA == value
+ case JumpNotEqual:
+ ok = regA != value
+ case JumpGreaterThan:
+ ok = regA > value
+ case JumpLessThan:
+ ok = regA < value
+ case JumpGreaterOrEqual:
+ ok = regA >= value
+ case JumpLessOrEqual:
+ ok = regA <= value
+ case JumpBitsSet:
+ ok = (regA & value) != 0
+ case JumpBitsNotSet:
+ ok = (regA & value) == 0
+ }
+
+ if ok {
+ return int(skipTrue)
+ }
+
+ return int(skipFalse)
+}
+
+func loadAbsolute(ins LoadAbsolute, in []byte) (uint32, bool) {
+ offset := int(ins.Off)
+ size := int(ins.Size)
+
+ return loadCommon(in, offset, size)
+}
+
+func loadConstant(ins LoadConstant, regA uint32, regX uint32) (uint32, uint32) {
+ switch ins.Dst {
+ case RegA:
+ regA = ins.Val
+ case RegX:
+ regX = ins.Val
+ }
+
+ return regA, regX
+}
+
+func loadExtension(ins LoadExtension, in []byte) uint32 {
+ switch ins.Num {
+ case ExtLen:
+ return uint32(len(in))
+ default:
+ panic(fmt.Sprintf("unimplemented extension: %d", ins.Num))
+ }
+}
+
+func loadIndirect(ins LoadIndirect, in []byte, regX uint32) (uint32, bool) {
+ offset := int(ins.Off) + int(regX)
+ size := int(ins.Size)
+
+ return loadCommon(in, offset, size)
+}
+
+func loadMemShift(ins LoadMemShift, in []byte) (uint32, bool) {
+ offset := int(ins.Off)
+
+ // Size of LoadMemShift is always 1 byte
+ if !inBounds(len(in), offset, 1) {
+ return 0, false
+ }
+
+ // Mask off high 4 bits and multiply low 4 bits by 4
+ return uint32(in[offset]&0x0f) * 4, true
+}
+
+func inBounds(inLen int, offset int, size int) bool {
+ return offset+size <= inLen
+}
+
+func loadCommon(in []byte, offset int, size int) (uint32, bool) {
+ if !inBounds(len(in), offset, size) {
+ return 0, false
+ }
+
+ switch size {
+ case 1:
+ return uint32(in[offset]), true
+ case 2:
+ return uint32(binary.BigEndian.Uint16(in[offset : offset+size])), true
+ case 4:
+ return uint32(binary.BigEndian.Uint32(in[offset : offset+size])), true
+ default:
+ panic(fmt.Sprintf("invalid load size: %d", size))
+ }
+}
+
+func loadScratch(ins LoadScratch, regScratch [16]uint32, regA uint32, regX uint32) (uint32, uint32) {
+ switch ins.Dst {
+ case RegA:
+ regA = regScratch[ins.N]
+ case RegX:
+ regX = regScratch[ins.N]
+ }
+
+ return regA, regX
+}
+
+func storeScratch(ins StoreScratch, regScratch [16]uint32, regA uint32, regX uint32) [16]uint32 {
+ switch ins.Src {
+ case RegA:
+ regScratch[ins.N] = regA
+ case RegX:
+ regScratch[ins.N] = regX
+ }
+
+ return regScratch
+}
diff --git a/vendor/golang.org/x/net/internal/iana/const.go b/vendor/golang.org/x/net/internal/iana/const.go
new file mode 100644
index 0000000..cea712f
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/iana/const.go
@@ -0,0 +1,223 @@
+// go generate gen.go
+// Code generated by the command above; DO NOT EDIT.
+
+// Package iana provides protocol number resources managed by the Internet Assigned Numbers Authority (IANA).
+package iana // import "golang.org/x/net/internal/iana"
+
+// Differentiated Services Field Codepoints (DSCP), Updated: 2018-05-04
+const (
+ DiffServCS0 = 0x00 // CS0
+ DiffServCS1 = 0x20 // CS1
+ DiffServCS2 = 0x40 // CS2
+ DiffServCS3 = 0x60 // CS3
+ DiffServCS4 = 0x80 // CS4
+ DiffServCS5 = 0xa0 // CS5
+ DiffServCS6 = 0xc0 // CS6
+ DiffServCS7 = 0xe0 // CS7
+ DiffServAF11 = 0x28 // AF11
+ DiffServAF12 = 0x30 // AF12
+ DiffServAF13 = 0x38 // AF13
+ DiffServAF21 = 0x48 // AF21
+ DiffServAF22 = 0x50 // AF22
+ DiffServAF23 = 0x58 // AF23
+ DiffServAF31 = 0x68 // AF31
+ DiffServAF32 = 0x70 // AF32
+ DiffServAF33 = 0x78 // AF33
+ DiffServAF41 = 0x88 // AF41
+ DiffServAF42 = 0x90 // AF42
+ DiffServAF43 = 0x98 // AF43
+ DiffServEF = 0xb8 // EF
+ DiffServVOICEADMIT = 0xb0 // VOICE-ADMIT
+ NotECNTransport = 0x00 // Not-ECT (Not ECN-Capable Transport)
+ ECNTransport1 = 0x01 // ECT(1) (ECN-Capable Transport(1))
+ ECNTransport0 = 0x02 // ECT(0) (ECN-Capable Transport(0))
+ CongestionExperienced = 0x03 // CE (Congestion Experienced)
+)
+
+// Protocol Numbers, Updated: 2017-10-13
+const (
+ ProtocolIP = 0 // IPv4 encapsulation, pseudo protocol number
+ ProtocolHOPOPT = 0 // IPv6 Hop-by-Hop Option
+ ProtocolICMP = 1 // Internet Control Message
+ ProtocolIGMP = 2 // Internet Group Management
+ ProtocolGGP = 3 // Gateway-to-Gateway
+ ProtocolIPv4 = 4 // IPv4 encapsulation
+ ProtocolST = 5 // Stream
+ ProtocolTCP = 6 // Transmission Control
+ ProtocolCBT = 7 // CBT
+ ProtocolEGP = 8 // Exterior Gateway Protocol
+ ProtocolIGP = 9 // any private interior gateway (used by Cisco for their IGRP)
+ ProtocolBBNRCCMON = 10 // BBN RCC Monitoring
+ ProtocolNVPII = 11 // Network Voice Protocol
+ ProtocolPUP = 12 // PUP
+ ProtocolEMCON = 14 // EMCON
+ ProtocolXNET = 15 // Cross Net Debugger
+ ProtocolCHAOS = 16 // Chaos
+ ProtocolUDP = 17 // User Datagram
+ ProtocolMUX = 18 // Multiplexing
+ ProtocolDCNMEAS = 19 // DCN Measurement Subsystems
+ ProtocolHMP = 20 // Host Monitoring
+ ProtocolPRM = 21 // Packet Radio Measurement
+ ProtocolXNSIDP = 22 // XEROX NS IDP
+ ProtocolTRUNK1 = 23 // Trunk-1
+ ProtocolTRUNK2 = 24 // Trunk-2
+ ProtocolLEAF1 = 25 // Leaf-1
+ ProtocolLEAF2 = 26 // Leaf-2
+ ProtocolRDP = 27 // Reliable Data Protocol
+ ProtocolIRTP = 28 // Internet Reliable Transaction
+ ProtocolISOTP4 = 29 // ISO Transport Protocol Class 4
+ ProtocolNETBLT = 30 // Bulk Data Transfer Protocol
+ ProtocolMFENSP = 31 // MFE Network Services Protocol
+ ProtocolMERITINP = 32 // MERIT Internodal Protocol
+ ProtocolDCCP = 33 // Datagram Congestion Control Protocol
+ Protocol3PC = 34 // Third Party Connect Protocol
+ ProtocolIDPR = 35 // Inter-Domain Policy Routing Protocol
+ ProtocolXTP = 36 // XTP
+ ProtocolDDP = 37 // Datagram Delivery Protocol
+ ProtocolIDPRCMTP = 38 // IDPR Control Message Transport Proto
+ ProtocolTPPP = 39 // TP++ Transport Protocol
+ ProtocolIL = 40 // IL Transport Protocol
+ ProtocolIPv6 = 41 // IPv6 encapsulation
+ ProtocolSDRP = 42 // Source Demand Routing Protocol
+ ProtocolIPv6Route = 43 // Routing Header for IPv6
+ ProtocolIPv6Frag = 44 // Fragment Header for IPv6
+ ProtocolIDRP = 45 // Inter-Domain Routing Protocol
+ ProtocolRSVP = 46 // Reservation Protocol
+ ProtocolGRE = 47 // Generic Routing Encapsulation
+ ProtocolDSR = 48 // Dynamic Source Routing Protocol
+ ProtocolBNA = 49 // BNA
+ ProtocolESP = 50 // Encap Security Payload
+ ProtocolAH = 51 // Authentication Header
+ ProtocolINLSP = 52 // Integrated Net Layer Security TUBA
+ ProtocolNARP = 54 // NBMA Address Resolution Protocol
+ ProtocolMOBILE = 55 // IP Mobility
+ ProtocolTLSP = 56 // Transport Layer Security Protocol using Kryptonet key management
+ ProtocolSKIP = 57 // SKIP
+ ProtocolIPv6ICMP = 58 // ICMP for IPv6
+ ProtocolIPv6NoNxt = 59 // No Next Header for IPv6
+ ProtocolIPv6Opts = 60 // Destination Options for IPv6
+ ProtocolCFTP = 62 // CFTP
+ ProtocolSATEXPAK = 64 // SATNET and Backroom EXPAK
+ ProtocolKRYPTOLAN = 65 // Kryptolan
+ ProtocolRVD = 66 // MIT Remote Virtual Disk Protocol
+ ProtocolIPPC = 67 // Internet Pluribus Packet Core
+ ProtocolSATMON = 69 // SATNET Monitoring
+ ProtocolVISA = 70 // VISA Protocol
+ ProtocolIPCV = 71 // Internet Packet Core Utility
+ ProtocolCPNX = 72 // Computer Protocol Network Executive
+ ProtocolCPHB = 73 // Computer Protocol Heart Beat
+ ProtocolWSN = 74 // Wang Span Network
+ ProtocolPVP = 75 // Packet Video Protocol
+ ProtocolBRSATMON = 76 // Backroom SATNET Monitoring
+ ProtocolSUNND = 77 // SUN ND PROTOCOL-Temporary
+ ProtocolWBMON = 78 // WIDEBAND Monitoring
+ ProtocolWBEXPAK = 79 // WIDEBAND EXPAK
+ ProtocolISOIP = 80 // ISO Internet Protocol
+ ProtocolVMTP = 81 // VMTP
+ ProtocolSECUREVMTP = 82 // SECURE-VMTP
+ ProtocolVINES = 83 // VINES
+ ProtocolTTP = 84 // Transaction Transport Protocol
+ ProtocolIPTM = 84 // Internet Protocol Traffic Manager
+ ProtocolNSFNETIGP = 85 // NSFNET-IGP
+ ProtocolDGP = 86 // Dissimilar Gateway Protocol
+ ProtocolTCF = 87 // TCF
+ ProtocolEIGRP = 88 // EIGRP
+ ProtocolOSPFIGP = 89 // OSPFIGP
+ ProtocolSpriteRPC = 90 // Sprite RPC Protocol
+ ProtocolLARP = 91 // Locus Address Resolution Protocol
+ ProtocolMTP = 92 // Multicast Transport Protocol
+ ProtocolAX25 = 93 // AX.25 Frames
+ ProtocolIPIP = 94 // IP-within-IP Encapsulation Protocol
+ ProtocolSCCSP = 96 // Semaphore Communications Sec. Pro.
+ ProtocolETHERIP = 97 // Ethernet-within-IP Encapsulation
+ ProtocolENCAP = 98 // Encapsulation Header
+ ProtocolGMTP = 100 // GMTP
+ ProtocolIFMP = 101 // Ipsilon Flow Management Protocol
+ ProtocolPNNI = 102 // PNNI over IP
+ ProtocolPIM = 103 // Protocol Independent Multicast
+ ProtocolARIS = 104 // ARIS
+ ProtocolSCPS = 105 // SCPS
+ ProtocolQNX = 106 // QNX
+ ProtocolAN = 107 // Active Networks
+ ProtocolIPComp = 108 // IP Payload Compression Protocol
+ ProtocolSNP = 109 // Sitara Networks Protocol
+ ProtocolCompaqPeer = 110 // Compaq Peer Protocol
+ ProtocolIPXinIP = 111 // IPX in IP
+ ProtocolVRRP = 112 // Virtual Router Redundancy Protocol
+ ProtocolPGM = 113 // PGM Reliable Transport Protocol
+ ProtocolL2TP = 115 // Layer Two Tunneling Protocol
+ ProtocolDDX = 116 // D-II Data Exchange (DDX)
+ ProtocolIATP = 117 // Interactive Agent Transfer Protocol
+ ProtocolSTP = 118 // Schedule Transfer Protocol
+ ProtocolSRP = 119 // SpectraLink Radio Protocol
+ ProtocolUTI = 120 // UTI
+ ProtocolSMP = 121 // Simple Message Protocol
+ ProtocolPTP = 123 // Performance Transparency Protocol
+ ProtocolISIS = 124 // ISIS over IPv4
+ ProtocolFIRE = 125 // FIRE
+ ProtocolCRTP = 126 // Combat Radio Transport Protocol
+ ProtocolCRUDP = 127 // Combat Radio User Datagram
+ ProtocolSSCOPMCE = 128 // SSCOPMCE
+ ProtocolIPLT = 129 // IPLT
+ ProtocolSPS = 130 // Secure Packet Shield
+ ProtocolPIPE = 131 // Private IP Encapsulation within IP
+ ProtocolSCTP = 132 // Stream Control Transmission Protocol
+ ProtocolFC = 133 // Fibre Channel
+ ProtocolRSVPE2EIGNORE = 134 // RSVP-E2E-IGNORE
+ ProtocolMobilityHeader = 135 // Mobility Header
+ ProtocolUDPLite = 136 // UDPLite
+ ProtocolMPLSinIP = 137 // MPLS-in-IP
+ ProtocolMANET = 138 // MANET Protocols
+ ProtocolHIP = 139 // Host Identity Protocol
+ ProtocolShim6 = 140 // Shim6 Protocol
+ ProtocolWESP = 141 // Wrapped Encapsulating Security Payload
+ ProtocolROHC = 142 // Robust Header Compression
+ ProtocolReserved = 255 // Reserved
+)
+
+// Address Family Numbers, Updated: 2018-04-02
+const (
+ AddrFamilyIPv4 = 1 // IP (IP version 4)
+ AddrFamilyIPv6 = 2 // IP6 (IP version 6)
+ AddrFamilyNSAP = 3 // NSAP
+ AddrFamilyHDLC = 4 // HDLC (8-bit multidrop)
+ AddrFamilyBBN1822 = 5 // BBN 1822
+ AddrFamily802 = 6 // 802 (includes all 802 media plus Ethernet "canonical format")
+ AddrFamilyE163 = 7 // E.163
+ AddrFamilyE164 = 8 // E.164 (SMDS, Frame Relay, ATM)
+ AddrFamilyF69 = 9 // F.69 (Telex)
+ AddrFamilyX121 = 10 // X.121 (X.25, Frame Relay)
+ AddrFamilyIPX = 11 // IPX
+ AddrFamilyAppletalk = 12 // Appletalk
+ AddrFamilyDecnetIV = 13 // Decnet IV
+ AddrFamilyBanyanVines = 14 // Banyan Vines
+ AddrFamilyE164withSubaddress = 15 // E.164 with NSAP format subaddress
+ AddrFamilyDNS = 16 // DNS (Domain Name System)
+ AddrFamilyDistinguishedName = 17 // Distinguished Name
+ AddrFamilyASNumber = 18 // AS Number
+ AddrFamilyXTPoverIPv4 = 19 // XTP over IP version 4
+ AddrFamilyXTPoverIPv6 = 20 // XTP over IP version 6
+ AddrFamilyXTPnativemodeXTP = 21 // XTP native mode XTP
+ AddrFamilyFibreChannelWorldWidePortName = 22 // Fibre Channel World-Wide Port Name
+ AddrFamilyFibreChannelWorldWideNodeName = 23 // Fibre Channel World-Wide Node Name
+ AddrFamilyGWID = 24 // GWID
+ AddrFamilyL2VPN = 25 // AFI for L2VPN information
+ AddrFamilyMPLSTPSectionEndpointID = 26 // MPLS-TP Section Endpoint Identifier
+ AddrFamilyMPLSTPLSPEndpointID = 27 // MPLS-TP LSP Endpoint Identifier
+ AddrFamilyMPLSTPPseudowireEndpointID = 28 // MPLS-TP Pseudowire Endpoint Identifier
+ AddrFamilyMTIPv4 = 29 // MT IP: Multi-Topology IP version 4
+ AddrFamilyMTIPv6 = 30 // MT IPv6: Multi-Topology IP version 6
+ AddrFamilyEIGRPCommonServiceFamily = 16384 // EIGRP Common Service Family
+ AddrFamilyEIGRPIPv4ServiceFamily = 16385 // EIGRP IPv4 Service Family
+ AddrFamilyEIGRPIPv6ServiceFamily = 16386 // EIGRP IPv6 Service Family
+ AddrFamilyLISPCanonicalAddressFormat = 16387 // LISP Canonical Address Format (LCAF)
+ AddrFamilyBGPLS = 16388 // BGP-LS
+ AddrFamily48bitMAC = 16389 // 48-bit MAC
+ AddrFamily64bitMAC = 16390 // 64-bit MAC
+ AddrFamilyOUI = 16391 // OUI
+ AddrFamilyMACFinal24bits = 16392 // MAC/24
+ AddrFamilyMACFinal40bits = 16393 // MAC/40
+ AddrFamilyIPv6Initial64bits = 16394 // IPv6/64
+ AddrFamilyRBridgePortID = 16395 // RBridge Port ID
+ AddrFamilyTRILLNickname = 16396 // TRILL Nickname
+)
diff --git a/vendor/golang.org/x/net/internal/socket/cmsghdr.go b/vendor/golang.org/x/net/internal/socket/cmsghdr.go
new file mode 100644
index 0000000..0a73e27
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/cmsghdr.go
@@ -0,0 +1,11 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package socket
+
+func (h *cmsghdr) len() int { return int(h.Len) }
+func (h *cmsghdr) lvl() int { return int(h.Level) }
+func (h *cmsghdr) typ() int { return int(h.Type) }
diff --git a/vendor/golang.org/x/net/internal/socket/cmsghdr_bsd.go b/vendor/golang.org/x/net/internal/socket/cmsghdr_bsd.go
new file mode 100644
index 0000000..14dbb3a
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/cmsghdr_bsd.go
@@ -0,0 +1,13 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd netbsd openbsd
+
+package socket
+
+func (h *cmsghdr) set(l, lvl, typ int) {
+ h.Len = uint32(l)
+ h.Level = int32(lvl)
+ h.Type = int32(typ)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/cmsghdr_linux_32bit.go b/vendor/golang.org/x/net/internal/socket/cmsghdr_linux_32bit.go
new file mode 100644
index 0000000..bac6681
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/cmsghdr_linux_32bit.go
@@ -0,0 +1,14 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build arm mips mipsle 386
+// +build linux
+
+package socket
+
+func (h *cmsghdr) set(l, lvl, typ int) {
+ h.Len = uint32(l)
+ h.Level = int32(lvl)
+ h.Type = int32(typ)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/cmsghdr_linux_64bit.go b/vendor/golang.org/x/net/internal/socket/cmsghdr_linux_64bit.go
new file mode 100644
index 0000000..27be0ef
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/cmsghdr_linux_64bit.go
@@ -0,0 +1,14 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build arm64 amd64 ppc64 ppc64le mips64 mips64le riscv64 s390x
+// +build linux
+
+package socket
+
+func (h *cmsghdr) set(l, lvl, typ int) {
+ h.Len = uint64(l)
+ h.Level = int32(lvl)
+ h.Type = int32(typ)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/cmsghdr_solaris_64bit.go b/vendor/golang.org/x/net/internal/socket/cmsghdr_solaris_64bit.go
new file mode 100644
index 0000000..7dedd43
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/cmsghdr_solaris_64bit.go
@@ -0,0 +1,14 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build amd64
+// +build solaris
+
+package socket
+
+func (h *cmsghdr) set(l, lvl, typ int) {
+ h.Len = uint32(l)
+ h.Level = int32(lvl)
+ h.Type = int32(typ)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/cmsghdr_stub.go b/vendor/golang.org/x/net/internal/socket/cmsghdr_stub.go
new file mode 100644
index 0000000..e581011
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/cmsghdr_stub.go
@@ -0,0 +1,17 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris
+
+package socket
+
+type cmsghdr struct{}
+
+const sizeofCmsghdr = 0
+
+func (h *cmsghdr) len() int { return 0 }
+func (h *cmsghdr) lvl() int { return 0 }
+func (h *cmsghdr) typ() int { return 0 }
+
+func (h *cmsghdr) set(l, lvl, typ int) {}
diff --git a/vendor/golang.org/x/net/internal/socket/empty.s b/vendor/golang.org/x/net/internal/socket/empty.s
new file mode 100644
index 0000000..bff0231
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/empty.s
@@ -0,0 +1,7 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin,go1.12
+
+// This exists solely so we can linkname in symbols from syscall.
diff --git a/vendor/golang.org/x/net/internal/socket/error_unix.go b/vendor/golang.org/x/net/internal/socket/error_unix.go
new file mode 100644
index 0000000..f14872d
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/error_unix.go
@@ -0,0 +1,31 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package socket
+
+import "syscall"
+
+var (
+ errEAGAIN error = syscall.EAGAIN
+ errEINVAL error = syscall.EINVAL
+ errENOENT error = syscall.ENOENT
+)
+
+// errnoErr returns common boxed Errno values, to prevent allocations
+// at runtime.
+func errnoErr(errno syscall.Errno) error {
+ switch errno {
+ case 0:
+ return nil
+ case syscall.EAGAIN:
+ return errEAGAIN
+ case syscall.EINVAL:
+ return errEINVAL
+ case syscall.ENOENT:
+ return errENOENT
+ }
+ return errno
+}
diff --git a/vendor/golang.org/x/net/internal/socket/error_windows.go b/vendor/golang.org/x/net/internal/socket/error_windows.go
new file mode 100644
index 0000000..6a6379a
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/error_windows.go
@@ -0,0 +1,26 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+import "syscall"
+
+var (
+ errERROR_IO_PENDING error = syscall.ERROR_IO_PENDING
+ errEINVAL error = syscall.EINVAL
+)
+
+// errnoErr returns common boxed Errno values, to prevent allocations
+// at runtime.
+func errnoErr(errno syscall.Errno) error {
+ switch errno {
+ case 0:
+ return nil
+ case syscall.ERROR_IO_PENDING:
+ return errERROR_IO_PENDING
+ case syscall.EINVAL:
+ return errEINVAL
+ }
+ return errno
+}
diff --git a/vendor/golang.org/x/net/internal/socket/iovec_32bit.go b/vendor/golang.org/x/net/internal/socket/iovec_32bit.go
new file mode 100644
index 0000000..05d6082
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/iovec_32bit.go
@@ -0,0 +1,19 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build arm mips mipsle 386
+// +build darwin dragonfly freebsd linux netbsd openbsd
+
+package socket
+
+import "unsafe"
+
+func (v *iovec) set(b []byte) {
+ l := len(b)
+ if l == 0 {
+ return
+ }
+ v.Base = (*byte)(unsafe.Pointer(&b[0]))
+ v.Len = uint32(l)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/iovec_64bit.go b/vendor/golang.org/x/net/internal/socket/iovec_64bit.go
new file mode 100644
index 0000000..dfeda75
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/iovec_64bit.go
@@ -0,0 +1,19 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build arm64 amd64 ppc64 ppc64le mips64 mips64le riscv64 s390x
+// +build aix darwin dragonfly freebsd linux netbsd openbsd
+
+package socket
+
+import "unsafe"
+
+func (v *iovec) set(b []byte) {
+ l := len(b)
+ if l == 0 {
+ return
+ }
+ v.Base = (*byte)(unsafe.Pointer(&b[0]))
+ v.Len = uint64(l)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/iovec_solaris_64bit.go b/vendor/golang.org/x/net/internal/socket/iovec_solaris_64bit.go
new file mode 100644
index 0000000..8d17a40
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/iovec_solaris_64bit.go
@@ -0,0 +1,19 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build amd64
+// +build solaris
+
+package socket
+
+import "unsafe"
+
+func (v *iovec) set(b []byte) {
+ l := len(b)
+ if l == 0 {
+ return
+ }
+ v.Base = (*int8)(unsafe.Pointer(&b[0]))
+ v.Len = uint64(l)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/iovec_stub.go b/vendor/golang.org/x/net/internal/socket/iovec_stub.go
new file mode 100644
index 0000000..a746e90
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/iovec_stub.go
@@ -0,0 +1,11 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris
+
+package socket
+
+type iovec struct{}
+
+func (v *iovec) set(b []byte) {}
diff --git a/vendor/golang.org/x/net/internal/socket/mmsghdr_stub.go b/vendor/golang.org/x/net/internal/socket/mmsghdr_stub.go
new file mode 100644
index 0000000..1a7f279
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/mmsghdr_stub.go
@@ -0,0 +1,21 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!linux,!netbsd
+
+package socket
+
+import "net"
+
+type mmsghdr struct{}
+
+type mmsghdrs []mmsghdr
+
+func (hs mmsghdrs) pack(ms []Message, parseFn func([]byte, string) (net.Addr, error), marshalFn func(net.Addr) []byte) error {
+ return nil
+}
+
+func (hs mmsghdrs) unpack(ms []Message, parseFn func([]byte, string) (net.Addr, error), hint string) error {
+ return nil
+}
diff --git a/vendor/golang.org/x/net/internal/socket/mmsghdr_unix.go b/vendor/golang.org/x/net/internal/socket/mmsghdr_unix.go
new file mode 100644
index 0000000..f110068
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/mmsghdr_unix.go
@@ -0,0 +1,42 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix linux netbsd
+
+package socket
+
+import "net"
+
+type mmsghdrs []mmsghdr
+
+func (hs mmsghdrs) pack(ms []Message, parseFn func([]byte, string) (net.Addr, error), marshalFn func(net.Addr) []byte) error {
+ for i := range hs {
+ vs := make([]iovec, len(ms[i].Buffers))
+ var sa []byte
+ if parseFn != nil {
+ sa = make([]byte, sizeofSockaddrInet6)
+ }
+ if marshalFn != nil {
+ sa = marshalFn(ms[i].Addr)
+ }
+ hs[i].Hdr.pack(vs, ms[i].Buffers, ms[i].OOB, sa)
+ }
+ return nil
+}
+
+func (hs mmsghdrs) unpack(ms []Message, parseFn func([]byte, string) (net.Addr, error), hint string) error {
+ for i := range hs {
+ ms[i].N = int(hs[i].Len)
+ ms[i].NN = hs[i].Hdr.controllen()
+ ms[i].Flags = hs[i].Hdr.flags()
+ if parseFn != nil {
+ var err error
+ ms[i].Addr, err = parseFn(hs[i].Hdr.name(), hint)
+ if err != nil {
+ return err
+ }
+ }
+ }
+ return nil
+}
diff --git a/vendor/golang.org/x/net/internal/socket/msghdr_bsd.go b/vendor/golang.org/x/net/internal/socket/msghdr_bsd.go
new file mode 100644
index 0000000..77f44c1
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/msghdr_bsd.go
@@ -0,0 +1,39 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd netbsd openbsd
+
+package socket
+
+import "unsafe"
+
+func (h *msghdr) pack(vs []iovec, bs [][]byte, oob []byte, sa []byte) {
+ for i := range vs {
+ vs[i].set(bs[i])
+ }
+ h.setIov(vs)
+ if len(oob) > 0 {
+ h.Control = (*byte)(unsafe.Pointer(&oob[0]))
+ h.Controllen = uint32(len(oob))
+ }
+ if sa != nil {
+ h.Name = (*byte)(unsafe.Pointer(&sa[0]))
+ h.Namelen = uint32(len(sa))
+ }
+}
+
+func (h *msghdr) name() []byte {
+ if h.Name != nil && h.Namelen > 0 {
+ return (*[sizeofSockaddrInet6]byte)(unsafe.Pointer(h.Name))[:h.Namelen]
+ }
+ return nil
+}
+
+func (h *msghdr) controllen() int {
+ return int(h.Controllen)
+}
+
+func (h *msghdr) flags() int {
+ return int(h.Flags)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/msghdr_bsdvar.go b/vendor/golang.org/x/net/internal/socket/msghdr_bsdvar.go
new file mode 100644
index 0000000..c5562dd
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/msghdr_bsdvar.go
@@ -0,0 +1,16 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd netbsd
+
+package socket
+
+func (h *msghdr) setIov(vs []iovec) {
+ l := len(vs)
+ if l == 0 {
+ return
+ }
+ h.Iov = &vs[0]
+ h.Iovlen = int32(l)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/msghdr_linux.go b/vendor/golang.org/x/net/internal/socket/msghdr_linux.go
new file mode 100644
index 0000000..5a38798
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/msghdr_linux.go
@@ -0,0 +1,36 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+import "unsafe"
+
+func (h *msghdr) pack(vs []iovec, bs [][]byte, oob []byte, sa []byte) {
+ for i := range vs {
+ vs[i].set(bs[i])
+ }
+ h.setIov(vs)
+ if len(oob) > 0 {
+ h.setControl(oob)
+ }
+ if sa != nil {
+ h.Name = (*byte)(unsafe.Pointer(&sa[0]))
+ h.Namelen = uint32(len(sa))
+ }
+}
+
+func (h *msghdr) name() []byte {
+ if h.Name != nil && h.Namelen > 0 {
+ return (*[sizeofSockaddrInet6]byte)(unsafe.Pointer(h.Name))[:h.Namelen]
+ }
+ return nil
+}
+
+func (h *msghdr) controllen() int {
+ return int(h.Controllen)
+}
+
+func (h *msghdr) flags() int {
+ return int(h.Flags)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/msghdr_linux_32bit.go b/vendor/golang.org/x/net/internal/socket/msghdr_linux_32bit.go
new file mode 100644
index 0000000..a7a5987
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/msghdr_linux_32bit.go
@@ -0,0 +1,24 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build arm mips mipsle 386
+// +build linux
+
+package socket
+
+import "unsafe"
+
+func (h *msghdr) setIov(vs []iovec) {
+ l := len(vs)
+ if l == 0 {
+ return
+ }
+ h.Iov = &vs[0]
+ h.Iovlen = uint32(l)
+}
+
+func (h *msghdr) setControl(b []byte) {
+ h.Control = (*byte)(unsafe.Pointer(&b[0]))
+ h.Controllen = uint32(len(b))
+}
diff --git a/vendor/golang.org/x/net/internal/socket/msghdr_linux_64bit.go b/vendor/golang.org/x/net/internal/socket/msghdr_linux_64bit.go
new file mode 100644
index 0000000..e731833
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/msghdr_linux_64bit.go
@@ -0,0 +1,24 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build arm64 amd64 ppc64 ppc64le mips64 mips64le riscv64 s390x
+// +build linux
+
+package socket
+
+import "unsafe"
+
+func (h *msghdr) setIov(vs []iovec) {
+ l := len(vs)
+ if l == 0 {
+ return
+ }
+ h.Iov = &vs[0]
+ h.Iovlen = uint64(l)
+}
+
+func (h *msghdr) setControl(b []byte) {
+ h.Control = (*byte)(unsafe.Pointer(&b[0]))
+ h.Controllen = uint64(len(b))
+}
diff --git a/vendor/golang.org/x/net/internal/socket/msghdr_openbsd.go b/vendor/golang.org/x/net/internal/socket/msghdr_openbsd.go
new file mode 100644
index 0000000..71a69e2
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/msghdr_openbsd.go
@@ -0,0 +1,14 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+func (h *msghdr) setIov(vs []iovec) {
+ l := len(vs)
+ if l == 0 {
+ return
+ }
+ h.Iov = &vs[0]
+ h.Iovlen = uint32(l)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/msghdr_solaris_64bit.go b/vendor/golang.org/x/net/internal/socket/msghdr_solaris_64bit.go
new file mode 100644
index 0000000..6465b20
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/msghdr_solaris_64bit.go
@@ -0,0 +1,36 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build amd64
+// +build solaris
+
+package socket
+
+import "unsafe"
+
+func (h *msghdr) pack(vs []iovec, bs [][]byte, oob []byte, sa []byte) {
+ for i := range vs {
+ vs[i].set(bs[i])
+ }
+ if len(vs) > 0 {
+ h.Iov = &vs[0]
+ h.Iovlen = int32(len(vs))
+ }
+ if len(oob) > 0 {
+ h.Accrights = (*int8)(unsafe.Pointer(&oob[0]))
+ h.Accrightslen = int32(len(oob))
+ }
+ if sa != nil {
+ h.Name = (*byte)(unsafe.Pointer(&sa[0]))
+ h.Namelen = uint32(len(sa))
+ }
+}
+
+func (h *msghdr) controllen() int {
+ return int(h.Accrightslen)
+}
+
+func (h *msghdr) flags() int {
+ return int(NativeEndian.Uint32(h.Pad_cgo_2[:]))
+}
diff --git a/vendor/golang.org/x/net/internal/socket/msghdr_stub.go b/vendor/golang.org/x/net/internal/socket/msghdr_stub.go
new file mode 100644
index 0000000..873490a
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/msghdr_stub.go
@@ -0,0 +1,14 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris
+
+package socket
+
+type msghdr struct{}
+
+func (h *msghdr) pack(vs []iovec, bs [][]byte, oob []byte, sa []byte) {}
+func (h *msghdr) name() []byte { return nil }
+func (h *msghdr) controllen() int { return 0 }
+func (h *msghdr) flags() int { return 0 }
diff --git a/vendor/golang.org/x/net/internal/socket/rawconn.go b/vendor/golang.org/x/net/internal/socket/rawconn.go
new file mode 100644
index 0000000..b07b890
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/rawconn.go
@@ -0,0 +1,64 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+import (
+ "errors"
+ "net"
+ "os"
+ "syscall"
+)
+
+// A Conn represents a raw connection.
+type Conn struct {
+ network string
+ c syscall.RawConn
+}
+
+// NewConn returns a new raw connection.
+func NewConn(c net.Conn) (*Conn, error) {
+ var err error
+ var cc Conn
+ switch c := c.(type) {
+ case *net.TCPConn:
+ cc.network = "tcp"
+ cc.c, err = c.SyscallConn()
+ case *net.UDPConn:
+ cc.network = "udp"
+ cc.c, err = c.SyscallConn()
+ case *net.IPConn:
+ cc.network = "ip"
+ cc.c, err = c.SyscallConn()
+ default:
+ return nil, errors.New("unknown connection type")
+ }
+ if err != nil {
+ return nil, err
+ }
+ return &cc, nil
+}
+
+func (o *Option) get(c *Conn, b []byte) (int, error) {
+ var operr error
+ var n int
+ fn := func(s uintptr) {
+ n, operr = getsockopt(s, o.Level, o.Name, b)
+ }
+ if err := c.c.Control(fn); err != nil {
+ return 0, err
+ }
+ return n, os.NewSyscallError("getsockopt", operr)
+}
+
+func (o *Option) set(c *Conn, b []byte) error {
+ var operr error
+ fn := func(s uintptr) {
+ operr = setsockopt(s, o.Level, o.Name, b)
+ }
+ if err := c.c.Control(fn); err != nil {
+ return err
+ }
+ return os.NewSyscallError("setsockopt", operr)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/rawconn_mmsg.go b/vendor/golang.org/x/net/internal/socket/rawconn_mmsg.go
new file mode 100644
index 0000000..1f4cb3b
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/rawconn_mmsg.go
@@ -0,0 +1,73 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux
+
+package socket
+
+import (
+ "net"
+ "os"
+ "syscall"
+)
+
+func (c *Conn) recvMsgs(ms []Message, flags int) (int, error) {
+ hs := make(mmsghdrs, len(ms))
+ var parseFn func([]byte, string) (net.Addr, error)
+ if c.network != "tcp" {
+ parseFn = parseInetAddr
+ }
+ if err := hs.pack(ms, parseFn, nil); err != nil {
+ return 0, err
+ }
+ var operr error
+ var n int
+ fn := func(s uintptr) bool {
+ n, operr = recvmmsg(s, hs, flags)
+ if operr == syscall.EAGAIN {
+ return false
+ }
+ return true
+ }
+ if err := c.c.Read(fn); err != nil {
+ return n, err
+ }
+ if operr != nil {
+ return n, os.NewSyscallError("recvmmsg", operr)
+ }
+ if err := hs[:n].unpack(ms[:n], parseFn, c.network); err != nil {
+ return n, err
+ }
+ return n, nil
+}
+
+func (c *Conn) sendMsgs(ms []Message, flags int) (int, error) {
+ hs := make(mmsghdrs, len(ms))
+ var marshalFn func(net.Addr) []byte
+ if c.network != "tcp" {
+ marshalFn = marshalInetAddr
+ }
+ if err := hs.pack(ms, nil, marshalFn); err != nil {
+ return 0, err
+ }
+ var operr error
+ var n int
+ fn := func(s uintptr) bool {
+ n, operr = sendmmsg(s, hs, flags)
+ if operr == syscall.EAGAIN {
+ return false
+ }
+ return true
+ }
+ if err := c.c.Write(fn); err != nil {
+ return n, err
+ }
+ if operr != nil {
+ return n, os.NewSyscallError("sendmmsg", operr)
+ }
+ if err := hs[:n].unpack(ms[:n], nil, ""); err != nil {
+ return n, err
+ }
+ return n, nil
+}
diff --git a/vendor/golang.org/x/net/internal/socket/rawconn_msg.go b/vendor/golang.org/x/net/internal/socket/rawconn_msg.go
new file mode 100644
index 0000000..a972011
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/rawconn_msg.go
@@ -0,0 +1,76 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris windows
+
+package socket
+
+import (
+ "os"
+ "syscall"
+)
+
+func (c *Conn) recvMsg(m *Message, flags int) error {
+ var h msghdr
+ vs := make([]iovec, len(m.Buffers))
+ var sa []byte
+ if c.network != "tcp" {
+ sa = make([]byte, sizeofSockaddrInet6)
+ }
+ h.pack(vs, m.Buffers, m.OOB, sa)
+ var operr error
+ var n int
+ fn := func(s uintptr) bool {
+ n, operr = recvmsg(s, &h, flags)
+ if operr == syscall.EAGAIN {
+ return false
+ }
+ return true
+ }
+ if err := c.c.Read(fn); err != nil {
+ return err
+ }
+ if operr != nil {
+ return os.NewSyscallError("recvmsg", operr)
+ }
+ if c.network != "tcp" {
+ var err error
+ m.Addr, err = parseInetAddr(sa[:], c.network)
+ if err != nil {
+ return err
+ }
+ }
+ m.N = n
+ m.NN = h.controllen()
+ m.Flags = h.flags()
+ return nil
+}
+
+func (c *Conn) sendMsg(m *Message, flags int) error {
+ var h msghdr
+ vs := make([]iovec, len(m.Buffers))
+ var sa []byte
+ if m.Addr != nil {
+ sa = marshalInetAddr(m.Addr)
+ }
+ h.pack(vs, m.Buffers, m.OOB, sa)
+ var operr error
+ var n int
+ fn := func(s uintptr) bool {
+ n, operr = sendmsg(s, &h, flags)
+ if operr == syscall.EAGAIN {
+ return false
+ }
+ return true
+ }
+ if err := c.c.Write(fn); err != nil {
+ return err
+ }
+ if operr != nil {
+ return os.NewSyscallError("sendmsg", operr)
+ }
+ m.N = n
+ m.NN = len(m.OOB)
+ return nil
+}
diff --git a/vendor/golang.org/x/net/internal/socket/rawconn_nommsg.go b/vendor/golang.org/x/net/internal/socket/rawconn_nommsg.go
new file mode 100644
index 0000000..fe5bb94
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/rawconn_nommsg.go
@@ -0,0 +1,15 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !linux
+
+package socket
+
+func (c *Conn) recvMsgs(ms []Message, flags int) (int, error) {
+ return 0, errNotImplemented
+}
+
+func (c *Conn) sendMsgs(ms []Message, flags int) (int, error) {
+ return 0, errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/internal/socket/rawconn_nomsg.go b/vendor/golang.org/x/net/internal/socket/rawconn_nomsg.go
new file mode 100644
index 0000000..b8cea6f
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/rawconn_nomsg.go
@@ -0,0 +1,15 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+
+package socket
+
+func (c *Conn) recvMsg(m *Message, flags int) error {
+ return errNotImplemented
+}
+
+func (c *Conn) sendMsg(m *Message, flags int) error {
+ return errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/internal/socket/socket.go b/vendor/golang.org/x/net/internal/socket/socket.go
new file mode 100644
index 0000000..23571b8
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/socket.go
@@ -0,0 +1,288 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package socket provides a portable interface for socket system
+// calls.
+package socket // import "golang.org/x/net/internal/socket"
+
+import (
+ "errors"
+ "net"
+ "runtime"
+ "unsafe"
+)
+
+var errNotImplemented = errors.New("not implemented on " + runtime.GOOS + "/" + runtime.GOARCH)
+
+// An Option represents a sticky socket option.
+type Option struct {
+ Level int // level
+ Name int // name; must be equal or greater than 1
+ Len int // length of value in bytes; must be equal or greater than 1
+}
+
+// Get reads a value for the option from the kernel.
+// It returns the number of bytes written into b.
+func (o *Option) Get(c *Conn, b []byte) (int, error) {
+ if o.Name < 1 || o.Len < 1 {
+ return 0, errors.New("invalid option")
+ }
+ if len(b) < o.Len {
+ return 0, errors.New("short buffer")
+ }
+ return o.get(c, b)
+}
+
+// GetInt returns an integer value for the option.
+//
+// The Len field of Option must be either 1 or 4.
+func (o *Option) GetInt(c *Conn) (int, error) {
+ if o.Len != 1 && o.Len != 4 {
+ return 0, errors.New("invalid option")
+ }
+ var b []byte
+ var bb [4]byte
+ if o.Len == 1 {
+ b = bb[:1]
+ } else {
+ b = bb[:4]
+ }
+ n, err := o.get(c, b)
+ if err != nil {
+ return 0, err
+ }
+ if n != o.Len {
+ return 0, errors.New("invalid option length")
+ }
+ if o.Len == 1 {
+ return int(b[0]), nil
+ }
+ return int(NativeEndian.Uint32(b[:4])), nil
+}
+
+// Set writes the option and value to the kernel.
+func (o *Option) Set(c *Conn, b []byte) error {
+ if o.Name < 1 || o.Len < 1 {
+ return errors.New("invalid option")
+ }
+ if len(b) < o.Len {
+ return errors.New("short buffer")
+ }
+ return o.set(c, b)
+}
+
+// SetInt writes the option and value to the kernel.
+//
+// The Len field of Option must be either 1 or 4.
+func (o *Option) SetInt(c *Conn, v int) error {
+ if o.Len != 1 && o.Len != 4 {
+ return errors.New("invalid option")
+ }
+ var b []byte
+ if o.Len == 1 {
+ b = []byte{byte(v)}
+ } else {
+ var bb [4]byte
+ NativeEndian.PutUint32(bb[:o.Len], uint32(v))
+ b = bb[:4]
+ }
+ return o.set(c, b)
+}
+
+func controlHeaderLen() int {
+ return roundup(sizeofCmsghdr)
+}
+
+func controlMessageLen(dataLen int) int {
+ return roundup(sizeofCmsghdr) + dataLen
+}
+
+// ControlMessageSpace returns the whole length of control message.
+func ControlMessageSpace(dataLen int) int {
+ return roundup(sizeofCmsghdr) + roundup(dataLen)
+}
+
+// A ControlMessage represents the head message in a stream of control
+// messages.
+//
+// A control message comprises of a header, data and a few padding
+// fields to conform to the interface to the kernel.
+//
+// See RFC 3542 for further information.
+type ControlMessage []byte
+
+// Data returns the data field of the control message at the head on
+// m.
+func (m ControlMessage) Data(dataLen int) []byte {
+ l := controlHeaderLen()
+ if len(m) < l || len(m) < l+dataLen {
+ return nil
+ }
+ return m[l : l+dataLen]
+}
+
+// Next returns the control message at the next on m.
+//
+// Next works only for standard control messages.
+func (m ControlMessage) Next(dataLen int) ControlMessage {
+ l := ControlMessageSpace(dataLen)
+ if len(m) < l {
+ return nil
+ }
+ return m[l:]
+}
+
+// MarshalHeader marshals the header fields of the control message at
+// the head on m.
+func (m ControlMessage) MarshalHeader(lvl, typ, dataLen int) error {
+ if len(m) < controlHeaderLen() {
+ return errors.New("short message")
+ }
+ h := (*cmsghdr)(unsafe.Pointer(&m[0]))
+ h.set(controlMessageLen(dataLen), lvl, typ)
+ return nil
+}
+
+// ParseHeader parses and returns the header fields of the control
+// message at the head on m.
+func (m ControlMessage) ParseHeader() (lvl, typ, dataLen int, err error) {
+ l := controlHeaderLen()
+ if len(m) < l {
+ return 0, 0, 0, errors.New("short message")
+ }
+ h := (*cmsghdr)(unsafe.Pointer(&m[0]))
+ return h.lvl(), h.typ(), int(uint64(h.len()) - uint64(l)), nil
+}
+
+// Marshal marshals the control message at the head on m, and returns
+// the next control message.
+func (m ControlMessage) Marshal(lvl, typ int, data []byte) (ControlMessage, error) {
+ l := len(data)
+ if len(m) < ControlMessageSpace(l) {
+ return nil, errors.New("short message")
+ }
+ h := (*cmsghdr)(unsafe.Pointer(&m[0]))
+ h.set(controlMessageLen(l), lvl, typ)
+ if l > 0 {
+ copy(m.Data(l), data)
+ }
+ return m.Next(l), nil
+}
+
+// Parse parses m as a single or multiple control messages.
+//
+// Parse works for both standard and compatible messages.
+func (m ControlMessage) Parse() ([]ControlMessage, error) {
+ var ms []ControlMessage
+ for len(m) >= controlHeaderLen() {
+ h := (*cmsghdr)(unsafe.Pointer(&m[0]))
+ l := h.len()
+ if l <= 0 {
+ return nil, errors.New("invalid header length")
+ }
+ if uint64(l) < uint64(controlHeaderLen()) {
+ return nil, errors.New("invalid message length")
+ }
+ if uint64(l) > uint64(len(m)) {
+ return nil, errors.New("short buffer")
+ }
+ // On message reception:
+ //
+ // |<- ControlMessageSpace --------------->|
+ // |<- controlMessageLen ---------->| |
+ // |<- controlHeaderLen ->| | |
+ // +---------------+------+---------+------+
+ // | Header | PadH | Data | PadD |
+ // +---------------+------+---------+------+
+ //
+ // On compatible message reception:
+ //
+ // | ... |<- controlMessageLen ----------->|
+ // | ... |<- controlHeaderLen ->| |
+ // +-----+---------------+------+----------+
+ // | ... | Header | PadH | Data |
+ // +-----+---------------+------+----------+
+ ms = append(ms, ControlMessage(m[:l]))
+ ll := l - controlHeaderLen()
+ if len(m) >= ControlMessageSpace(ll) {
+ m = m[ControlMessageSpace(ll):]
+ } else {
+ m = m[controlMessageLen(ll):]
+ }
+ }
+ return ms, nil
+}
+
+// NewControlMessage returns a new stream of control messages.
+func NewControlMessage(dataLen []int) ControlMessage {
+ var l int
+ for i := range dataLen {
+ l += ControlMessageSpace(dataLen[i])
+ }
+ return make([]byte, l)
+}
+
+// A Message represents an IO message.
+type Message struct {
+ // When writing, the Buffers field must contain at least one
+ // byte to write.
+ // When reading, the Buffers field will always contain a byte
+ // to read.
+ Buffers [][]byte
+
+ // OOB contains protocol-specific control or miscellaneous
+ // ancillary data known as out-of-band data.
+ OOB []byte
+
+ // Addr specifies a destination address when writing.
+ // It can be nil when the underlying protocol of the raw
+ // connection uses connection-oriented communication.
+ // After a successful read, it may contain the source address
+ // on the received packet.
+ Addr net.Addr
+
+ N int // # of bytes read or written from/to Buffers
+ NN int // # of bytes read or written from/to OOB
+ Flags int // protocol-specific information on the received message
+}
+
+// RecvMsg wraps recvmsg system call.
+//
+// The provided flags is a set of platform-dependent flags, such as
+// syscall.MSG_PEEK.
+func (c *Conn) RecvMsg(m *Message, flags int) error {
+ return c.recvMsg(m, flags)
+}
+
+// SendMsg wraps sendmsg system call.
+//
+// The provided flags is a set of platform-dependent flags, such as
+// syscall.MSG_DONTROUTE.
+func (c *Conn) SendMsg(m *Message, flags int) error {
+ return c.sendMsg(m, flags)
+}
+
+// RecvMsgs wraps recvmmsg system call.
+//
+// It returns the number of processed messages.
+//
+// The provided flags is a set of platform-dependent flags, such as
+// syscall.MSG_PEEK.
+//
+// Only Linux supports this.
+func (c *Conn) RecvMsgs(ms []Message, flags int) (int, error) {
+ return c.recvMsgs(ms, flags)
+}
+
+// SendMsgs wraps sendmmsg system call.
+//
+// It returns the number of processed messages.
+//
+// The provided flags is a set of platform-dependent flags, such as
+// syscall.MSG_DONTROUTE.
+//
+// Only Linux supports this.
+func (c *Conn) SendMsgs(ms []Message, flags int) (int, error) {
+ return c.sendMsgs(ms, flags)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/sys.go b/vendor/golang.org/x/net/internal/socket/sys.go
new file mode 100644
index 0000000..ee492ba
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys.go
@@ -0,0 +1,33 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+import (
+ "encoding/binary"
+ "unsafe"
+)
+
+var (
+ // NativeEndian is the machine native endian implementation of
+ // ByteOrder.
+ NativeEndian binary.ByteOrder
+
+ kernelAlign int
+)
+
+func init() {
+ i := uint32(1)
+ b := (*[4]byte)(unsafe.Pointer(&i))
+ if b[0] == 1 {
+ NativeEndian = binary.LittleEndian
+ } else {
+ NativeEndian = binary.BigEndian
+ }
+ kernelAlign = probeProtocolStack()
+}
+
+func roundup(l int) int {
+ return (l + kernelAlign - 1) &^ (kernelAlign - 1)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/sys_bsd.go b/vendor/golang.org/x/net/internal/socket/sys_bsd.go
new file mode 100644
index 0000000..d432835
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_bsd.go
@@ -0,0 +1,15 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd openbsd
+
+package socket
+
+func recvmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ return 0, errNotImplemented
+}
+
+func sendmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ return 0, errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/internal/socket/sys_bsdvar.go b/vendor/golang.org/x/net/internal/socket/sys_bsdvar.go
new file mode 100644
index 0000000..b4f41b5
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_bsdvar.go
@@ -0,0 +1,23 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix freebsd netbsd openbsd
+
+package socket
+
+import (
+ "runtime"
+ "unsafe"
+)
+
+func probeProtocolStack() int {
+ if (runtime.GOOS == "netbsd" || runtime.GOOS == "openbsd") && runtime.GOARCH == "arm" {
+ return 8
+ }
+ if runtime.GOOS == "aix" {
+ return 1
+ }
+ var p uintptr
+ return int(unsafe.Sizeof(p))
+}
diff --git a/vendor/golang.org/x/net/internal/socket/sys_const_unix.go b/vendor/golang.org/x/net/internal/socket/sys_const_unix.go
new file mode 100644
index 0000000..43797d6
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_const_unix.go
@@ -0,0 +1,17 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package socket
+
+import "golang.org/x/sys/unix"
+
+const (
+ sysAF_UNSPEC = unix.AF_UNSPEC
+ sysAF_INET = unix.AF_INET
+ sysAF_INET6 = unix.AF_INET6
+
+ sysSOCK_RAW = unix.SOCK_RAW
+)
diff --git a/vendor/golang.org/x/net/internal/socket/sys_darwin.go b/vendor/golang.org/x/net/internal/socket/sys_darwin.go
new file mode 100644
index 0000000..b17d223
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_darwin.go
@@ -0,0 +1,7 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+func probeProtocolStack() int { return 4 }
diff --git a/vendor/golang.org/x/net/internal/socket/sys_dragonfly.go b/vendor/golang.org/x/net/internal/socket/sys_dragonfly.go
new file mode 100644
index 0000000..b17d223
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_dragonfly.go
@@ -0,0 +1,7 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+func probeProtocolStack() int { return 4 }
diff --git a/vendor/golang.org/x/net/internal/socket/sys_go1_11_darwin.go b/vendor/golang.org/x/net/internal/socket/sys_go1_11_darwin.go
new file mode 100644
index 0000000..02d2b3c
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_go1_11_darwin.go
@@ -0,0 +1,33 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !go1.12
+
+package socket
+
+import (
+ "syscall"
+ "unsafe"
+)
+
+func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
+ l := uint32(len(b))
+ _, _, errno := syscall.Syscall6(syscall.SYS_GETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(unsafe.Pointer(&l)), 0)
+ return int(l), errnoErr(errno)
+}
+
+func setsockopt(s uintptr, level, name int, b []byte) error {
+ _, _, errno := syscall.Syscall6(syscall.SYS_SETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)), 0)
+ return errnoErr(errno)
+}
+
+func recvmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ n, _, errno := syscall.Syscall(syscall.SYS_RECVMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags))
+ return int(n), errnoErr(errno)
+}
+
+func sendmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ n, _, errno := syscall.Syscall(syscall.SYS_SENDMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags))
+ return int(n), errnoErr(errno)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linkname.go b/vendor/golang.org/x/net/internal/socket/sys_linkname.go
new file mode 100644
index 0000000..61c3f38
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linkname.go
@@ -0,0 +1,42 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix go1.12,darwin
+
+package socket
+
+import (
+ "syscall"
+ "unsafe"
+)
+
+//go:linkname syscall_getsockopt syscall.getsockopt
+func syscall_getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *uint32) error
+
+func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
+ l := uint32(len(b))
+ err := syscall_getsockopt(int(s), level, name, unsafe.Pointer(&b[0]), &l)
+ return int(l), err
+}
+
+//go:linkname syscall_setsockopt syscall.setsockopt
+func syscall_setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) error
+
+func setsockopt(s uintptr, level, name int, b []byte) error {
+ return syscall_setsockopt(int(s), level, name, unsafe.Pointer(&b[0]), uintptr(len(b)))
+}
+
+//go:linkname syscall_recvmsg syscall.recvmsg
+func syscall_recvmsg(s int, msg *syscall.Msghdr, flags int) (n int, err error)
+
+func recvmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ return syscall_recvmsg(int(s), (*syscall.Msghdr)(unsafe.Pointer(h)), flags)
+}
+
+//go:linkname syscall_sendmsg syscall.sendmsg
+func syscall_sendmsg(s int, msg *syscall.Msghdr, flags int) (n int, err error)
+
+func sendmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ return syscall_sendmsg(int(s), (*syscall.Msghdr)(unsafe.Pointer(h)), flags)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linux.go b/vendor/golang.org/x/net/internal/socket/sys_linux.go
new file mode 100644
index 0000000..1559521
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linux.go
@@ -0,0 +1,27 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux,!s390x,!386
+
+package socket
+
+import (
+ "syscall"
+ "unsafe"
+)
+
+func probeProtocolStack() int {
+ var p uintptr
+ return int(unsafe.Sizeof(p))
+}
+
+func recvmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ n, _, errno := syscall.Syscall6(sysRECVMMSG, s, uintptr(unsafe.Pointer(&hs[0])), uintptr(len(hs)), uintptr(flags), 0, 0)
+ return int(n), errnoErr(errno)
+}
+
+func sendmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ n, _, errno := syscall.Syscall6(sysSENDMMSG, s, uintptr(unsafe.Pointer(&hs[0])), uintptr(len(hs)), uintptr(flags), 0, 0)
+ return int(n), errnoErr(errno)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linux_386.go b/vendor/golang.org/x/net/internal/socket/sys_linux_386.go
new file mode 100644
index 0000000..235b2cc
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linux_386.go
@@ -0,0 +1,55 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+import (
+ "syscall"
+ "unsafe"
+)
+
+func probeProtocolStack() int { return 4 }
+
+const (
+ sysSETSOCKOPT = 0xe
+ sysGETSOCKOPT = 0xf
+ sysSENDMSG = 0x10
+ sysRECVMSG = 0x11
+ sysRECVMMSG = 0x13
+ sysSENDMMSG = 0x14
+)
+
+func socketcall(call, a0, a1, a2, a3, a4, a5 uintptr) (uintptr, syscall.Errno)
+func rawsocketcall(call, a0, a1, a2, a3, a4, a5 uintptr) (uintptr, syscall.Errno)
+
+func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
+ l := uint32(len(b))
+ _, errno := socketcall(sysGETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(unsafe.Pointer(&l)), 0)
+ return int(l), errnoErr(errno)
+}
+
+func setsockopt(s uintptr, level, name int, b []byte) error {
+ _, errno := socketcall(sysSETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)), 0)
+ return errnoErr(errno)
+}
+
+func recvmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ n, errno := socketcall(sysRECVMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags), 0, 0, 0)
+ return int(n), errnoErr(errno)
+}
+
+func sendmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ n, errno := socketcall(sysSENDMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags), 0, 0, 0)
+ return int(n), errnoErr(errno)
+}
+
+func recvmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ n, errno := socketcall(sysRECVMMSG, s, uintptr(unsafe.Pointer(&hs[0])), uintptr(len(hs)), uintptr(flags), 0, 0)
+ return int(n), errnoErr(errno)
+}
+
+func sendmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ n, errno := socketcall(sysSENDMMSG, s, uintptr(unsafe.Pointer(&hs[0])), uintptr(len(hs)), uintptr(flags), 0, 0)
+ return int(n), errnoErr(errno)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linux_386.s b/vendor/golang.org/x/net/internal/socket/sys_linux_386.s
new file mode 100644
index 0000000..93e7d75
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linux_386.s
@@ -0,0 +1,11 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+TEXT ·socketcall(SB),NOSPLIT,$0-36
+ JMP syscall·socketcall(SB)
+
+TEXT ·rawsocketcall(SB),NOSPLIT,$0-36
+ JMP syscall·rawsocketcall(SB)
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linux_amd64.go b/vendor/golang.org/x/net/internal/socket/sys_linux_amd64.go
new file mode 100644
index 0000000..9decee2
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linux_amd64.go
@@ -0,0 +1,10 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+const (
+ sysRECVMMSG = 0x12b
+ sysSENDMMSG = 0x133
+)
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linux_arm.go b/vendor/golang.org/x/net/internal/socket/sys_linux_arm.go
new file mode 100644
index 0000000..d753b43
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linux_arm.go
@@ -0,0 +1,10 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+const (
+ sysRECVMMSG = 0x16d
+ sysSENDMMSG = 0x176
+)
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linux_arm64.go b/vendor/golang.org/x/net/internal/socket/sys_linux_arm64.go
new file mode 100644
index 0000000..b670894
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linux_arm64.go
@@ -0,0 +1,10 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+const (
+ sysRECVMMSG = 0xf3
+ sysSENDMMSG = 0x10d
+)
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linux_mips.go b/vendor/golang.org/x/net/internal/socket/sys_linux_mips.go
new file mode 100644
index 0000000..9c0d740
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linux_mips.go
@@ -0,0 +1,10 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+const (
+ sysRECVMMSG = 0x10ef
+ sysSENDMMSG = 0x10f7
+)
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linux_mips64.go b/vendor/golang.org/x/net/internal/socket/sys_linux_mips64.go
new file mode 100644
index 0000000..071a4ab
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linux_mips64.go
@@ -0,0 +1,10 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+const (
+ sysRECVMMSG = 0x14ae
+ sysSENDMMSG = 0x14b6
+)
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linux_mips64le.go b/vendor/golang.org/x/net/internal/socket/sys_linux_mips64le.go
new file mode 100644
index 0000000..071a4ab
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linux_mips64le.go
@@ -0,0 +1,10 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+const (
+ sysRECVMMSG = 0x14ae
+ sysSENDMMSG = 0x14b6
+)
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linux_mipsle.go b/vendor/golang.org/x/net/internal/socket/sys_linux_mipsle.go
new file mode 100644
index 0000000..9c0d740
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linux_mipsle.go
@@ -0,0 +1,10 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+const (
+ sysRECVMMSG = 0x10ef
+ sysSENDMMSG = 0x10f7
+)
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linux_ppc64.go b/vendor/golang.org/x/net/internal/socket/sys_linux_ppc64.go
new file mode 100644
index 0000000..21c1e3f
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linux_ppc64.go
@@ -0,0 +1,10 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+const (
+ sysRECVMMSG = 0x157
+ sysSENDMMSG = 0x15d
+)
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linux_ppc64le.go b/vendor/golang.org/x/net/internal/socket/sys_linux_ppc64le.go
new file mode 100644
index 0000000..21c1e3f
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linux_ppc64le.go
@@ -0,0 +1,10 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+const (
+ sysRECVMMSG = 0x157
+ sysSENDMMSG = 0x15d
+)
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linux_riscv64.go b/vendor/golang.org/x/net/internal/socket/sys_linux_riscv64.go
new file mode 100644
index 0000000..64f69f1
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linux_riscv64.go
@@ -0,0 +1,12 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build riscv64
+
+package socket
+
+const (
+ sysRECVMMSG = 0xf3
+ sysSENDMMSG = 0x10d
+)
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linux_s390x.go b/vendor/golang.org/x/net/internal/socket/sys_linux_s390x.go
new file mode 100644
index 0000000..327979e
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linux_s390x.go
@@ -0,0 +1,55 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+import (
+ "syscall"
+ "unsafe"
+)
+
+func probeProtocolStack() int { return 8 }
+
+const (
+ sysSETSOCKOPT = 0xe
+ sysGETSOCKOPT = 0xf
+ sysSENDMSG = 0x10
+ sysRECVMSG = 0x11
+ sysRECVMMSG = 0x13
+ sysSENDMMSG = 0x14
+)
+
+func socketcall(call, a0, a1, a2, a3, a4, a5 uintptr) (uintptr, syscall.Errno)
+func rawsocketcall(call, a0, a1, a2, a3, a4, a5 uintptr) (uintptr, syscall.Errno)
+
+func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
+ l := uint32(len(b))
+ _, errno := socketcall(sysGETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(unsafe.Pointer(&l)), 0)
+ return int(l), errnoErr(errno)
+}
+
+func setsockopt(s uintptr, level, name int, b []byte) error {
+ _, errno := socketcall(sysSETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)), 0)
+ return errnoErr(errno)
+}
+
+func recvmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ n, errno := socketcall(sysRECVMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags), 0, 0, 0)
+ return int(n), errnoErr(errno)
+}
+
+func sendmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ n, errno := socketcall(sysSENDMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags), 0, 0, 0)
+ return int(n), errnoErr(errno)
+}
+
+func recvmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ n, errno := socketcall(sysRECVMMSG, s, uintptr(unsafe.Pointer(&hs[0])), uintptr(len(hs)), uintptr(flags), 0, 0)
+ return int(n), errnoErr(errno)
+}
+
+func sendmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ n, errno := socketcall(sysSENDMMSG, s, uintptr(unsafe.Pointer(&hs[0])), uintptr(len(hs)), uintptr(flags), 0, 0)
+ return int(n), errnoErr(errno)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/sys_linux_s390x.s b/vendor/golang.org/x/net/internal/socket/sys_linux_s390x.s
new file mode 100644
index 0000000..06d7562
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_linux_s390x.s
@@ -0,0 +1,11 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+TEXT ·socketcall(SB),NOSPLIT,$0-72
+ JMP syscall·socketcall(SB)
+
+TEXT ·rawsocketcall(SB),NOSPLIT,$0-72
+ JMP syscall·rawsocketcall(SB)
diff --git a/vendor/golang.org/x/net/internal/socket/sys_netbsd.go b/vendor/golang.org/x/net/internal/socket/sys_netbsd.go
new file mode 100644
index 0000000..431851c
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_netbsd.go
@@ -0,0 +1,25 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+import (
+ "syscall"
+ "unsafe"
+)
+
+const (
+ sysRECVMMSG = 0x1db
+ sysSENDMMSG = 0x1dc
+)
+
+func recvmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ n, _, errno := syscall.Syscall6(sysRECVMMSG, s, uintptr(unsafe.Pointer(&hs[0])), uintptr(len(hs)), uintptr(flags), 0, 0)
+ return int(n), errnoErr(errno)
+}
+
+func sendmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ n, _, errno := syscall.Syscall6(sysSENDMMSG, s, uintptr(unsafe.Pointer(&hs[0])), uintptr(len(hs)), uintptr(flags), 0, 0)
+ return int(n), errnoErr(errno)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/sys_posix.go b/vendor/golang.org/x/net/internal/socket/sys_posix.go
new file mode 100644
index 0000000..22eae80
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_posix.go
@@ -0,0 +1,183 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris windows
+
+package socket
+
+import (
+ "encoding/binary"
+ "errors"
+ "net"
+ "runtime"
+ "strconv"
+ "sync"
+ "time"
+)
+
+func marshalInetAddr(a net.Addr) []byte {
+ switch a := a.(type) {
+ case *net.TCPAddr:
+ return marshalSockaddr(a.IP, a.Port, a.Zone)
+ case *net.UDPAddr:
+ return marshalSockaddr(a.IP, a.Port, a.Zone)
+ case *net.IPAddr:
+ return marshalSockaddr(a.IP, 0, a.Zone)
+ default:
+ return nil
+ }
+}
+
+func marshalSockaddr(ip net.IP, port int, zone string) []byte {
+ if ip4 := ip.To4(); ip4 != nil {
+ b := make([]byte, sizeofSockaddrInet)
+ switch runtime.GOOS {
+ case "android", "illumos", "linux", "solaris", "windows":
+ NativeEndian.PutUint16(b[:2], uint16(sysAF_INET))
+ default:
+ b[0] = sizeofSockaddrInet
+ b[1] = sysAF_INET
+ }
+ binary.BigEndian.PutUint16(b[2:4], uint16(port))
+ copy(b[4:8], ip4)
+ return b
+ }
+ if ip6 := ip.To16(); ip6 != nil && ip.To4() == nil {
+ b := make([]byte, sizeofSockaddrInet6)
+ switch runtime.GOOS {
+ case "android", "illumos", "linux", "solaris", "windows":
+ NativeEndian.PutUint16(b[:2], uint16(sysAF_INET6))
+ default:
+ b[0] = sizeofSockaddrInet6
+ b[1] = sysAF_INET6
+ }
+ binary.BigEndian.PutUint16(b[2:4], uint16(port))
+ copy(b[8:24], ip6)
+ if zone != "" {
+ NativeEndian.PutUint32(b[24:28], uint32(zoneCache.index(zone)))
+ }
+ return b
+ }
+ return nil
+}
+
+func parseInetAddr(b []byte, network string) (net.Addr, error) {
+ if len(b) < 2 {
+ return nil, errors.New("invalid address")
+ }
+ var af int
+ switch runtime.GOOS {
+ case "android", "illumos", "linux", "solaris", "windows":
+ af = int(NativeEndian.Uint16(b[:2]))
+ default:
+ af = int(b[1])
+ }
+ var ip net.IP
+ var zone string
+ if af == sysAF_INET {
+ if len(b) < sizeofSockaddrInet {
+ return nil, errors.New("short address")
+ }
+ ip = make(net.IP, net.IPv4len)
+ copy(ip, b[4:8])
+ }
+ if af == sysAF_INET6 {
+ if len(b) < sizeofSockaddrInet6 {
+ return nil, errors.New("short address")
+ }
+ ip = make(net.IP, net.IPv6len)
+ copy(ip, b[8:24])
+ if id := int(NativeEndian.Uint32(b[24:28])); id > 0 {
+ zone = zoneCache.name(id)
+ }
+ }
+ switch network {
+ case "tcp", "tcp4", "tcp6":
+ return &net.TCPAddr{IP: ip, Port: int(binary.BigEndian.Uint16(b[2:4])), Zone: zone}, nil
+ case "udp", "udp4", "udp6":
+ return &net.UDPAddr{IP: ip, Port: int(binary.BigEndian.Uint16(b[2:4])), Zone: zone}, nil
+ default:
+ return &net.IPAddr{IP: ip, Zone: zone}, nil
+ }
+}
+
+// An ipv6ZoneCache represents a cache holding partial network
+// interface information. It is used for reducing the cost of IPv6
+// addressing scope zone resolution.
+//
+// Multiple names sharing the index are managed by first-come
+// first-served basis for consistency.
+type ipv6ZoneCache struct {
+ sync.RWMutex // guard the following
+ lastFetched time.Time // last time routing information was fetched
+ toIndex map[string]int // interface name to its index
+ toName map[int]string // interface index to its name
+}
+
+var zoneCache = ipv6ZoneCache{
+ toIndex: make(map[string]int),
+ toName: make(map[int]string),
+}
+
+// update refreshes the network interface information if the cache was last
+// updated more than 1 minute ago, or if force is set. It returns whether the
+// cache was updated.
+func (zc *ipv6ZoneCache) update(ift []net.Interface, force bool) (updated bool) {
+ zc.Lock()
+ defer zc.Unlock()
+ now := time.Now()
+ if !force && zc.lastFetched.After(now.Add(-60*time.Second)) {
+ return false
+ }
+ zc.lastFetched = now
+ if len(ift) == 0 {
+ var err error
+ if ift, err = net.Interfaces(); err != nil {
+ return false
+ }
+ }
+ zc.toIndex = make(map[string]int, len(ift))
+ zc.toName = make(map[int]string, len(ift))
+ for _, ifi := range ift {
+ zc.toIndex[ifi.Name] = ifi.Index
+ if _, ok := zc.toName[ifi.Index]; !ok {
+ zc.toName[ifi.Index] = ifi.Name
+ }
+ }
+ return true
+}
+
+func (zc *ipv6ZoneCache) name(zone int) string {
+ updated := zoneCache.update(nil, false)
+ zoneCache.RLock()
+ name, ok := zoneCache.toName[zone]
+ zoneCache.RUnlock()
+ if !ok && !updated {
+ zoneCache.update(nil, true)
+ zoneCache.RLock()
+ name, ok = zoneCache.toName[zone]
+ zoneCache.RUnlock()
+ }
+ if !ok { // last resort
+ name = strconv.Itoa(zone)
+ }
+ return name
+}
+
+func (zc *ipv6ZoneCache) index(zone string) int {
+ updated := zoneCache.update(nil, false)
+ zoneCache.RLock()
+ index, ok := zoneCache.toIndex[zone]
+ zoneCache.RUnlock()
+ if !ok && !updated {
+ zoneCache.update(nil, true)
+ zoneCache.RLock()
+ index, ok = zoneCache.toIndex[zone]
+ zoneCache.RUnlock()
+ }
+ if !ok { // last resort
+ index, _ = strconv.Atoi(zone)
+ }
+ return index
+}
diff --git a/vendor/golang.org/x/net/internal/socket/sys_solaris.go b/vendor/golang.org/x/net/internal/socket/sys_solaris.go
new file mode 100644
index 0000000..66b5547
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_solaris.go
@@ -0,0 +1,70 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+import (
+ "runtime"
+ "syscall"
+ "unsafe"
+)
+
+func probeProtocolStack() int {
+ switch runtime.GOARCH {
+ case "amd64":
+ return 4
+ default:
+ var p uintptr
+ return int(unsafe.Sizeof(p))
+ }
+}
+
+//go:cgo_import_dynamic libc___xnet_getsockopt __xnet_getsockopt "libsocket.so"
+//go:cgo_import_dynamic libc_setsockopt setsockopt "libsocket.so"
+//go:cgo_import_dynamic libc___xnet_recvmsg __xnet_recvmsg "libsocket.so"
+//go:cgo_import_dynamic libc___xnet_sendmsg __xnet_sendmsg "libsocket.so"
+
+//go:linkname procGetsockopt libc___xnet_getsockopt
+//go:linkname procSetsockopt libc_setsockopt
+//go:linkname procRecvmsg libc___xnet_recvmsg
+//go:linkname procSendmsg libc___xnet_sendmsg
+
+var (
+ procGetsockopt uintptr
+ procSetsockopt uintptr
+ procRecvmsg uintptr
+ procSendmsg uintptr
+)
+
+func sysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (uintptr, uintptr, syscall.Errno)
+func rawSysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (uintptr, uintptr, syscall.Errno)
+
+func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
+ l := uint32(len(b))
+ _, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procGetsockopt)), 5, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(unsafe.Pointer(&l)), 0)
+ return int(l), errnoErr(errno)
+}
+
+func setsockopt(s uintptr, level, name int, b []byte) error {
+ _, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procSetsockopt)), 5, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)), 0)
+ return errnoErr(errno)
+}
+
+func recvmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ n, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procRecvmsg)), 3, s, uintptr(unsafe.Pointer(h)), uintptr(flags), 0, 0, 0)
+ return int(n), errnoErr(errno)
+}
+
+func sendmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ n, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procSendmsg)), 3, s, uintptr(unsafe.Pointer(h)), uintptr(flags), 0, 0, 0)
+ return int(n), errnoErr(errno)
+}
+
+func recvmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ return 0, errNotImplemented
+}
+
+func sendmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ return 0, errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/internal/socket/sys_solaris_amd64.s b/vendor/golang.org/x/net/internal/socket/sys_solaris_amd64.s
new file mode 100644
index 0000000..a18ac5e
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_solaris_amd64.s
@@ -0,0 +1,11 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+#include "textflag.h"
+
+TEXT ·sysvicall6(SB),NOSPLIT,$0-88
+ JMP syscall·sysvicall6(SB)
+
+TEXT ·rawSysvicall6(SB),NOSPLIT,$0-88
+ JMP syscall·rawSysvicall6(SB)
diff --git a/vendor/golang.org/x/net/internal/socket/sys_stub.go b/vendor/golang.org/x/net/internal/socket/sys_stub.go
new file mode 100644
index 0000000..0f61742
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_stub.go
@@ -0,0 +1,63 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+
+package socket
+
+import (
+ "net"
+ "runtime"
+ "unsafe"
+)
+
+const (
+ sysAF_UNSPEC = 0x0
+ sysAF_INET = 0x2
+ sysAF_INET6 = 0xa
+
+ sysSOCK_RAW = 0x3
+)
+
+func probeProtocolStack() int {
+ switch runtime.GOARCH {
+ case "amd64p32", "mips64p32":
+ return 4
+ default:
+ var p uintptr
+ return int(unsafe.Sizeof(p))
+ }
+}
+
+func marshalInetAddr(ip net.IP, port int, zone string) []byte {
+ return nil
+}
+
+func parseInetAddr(b []byte, network string) (net.Addr, error) {
+ return nil, errNotImplemented
+}
+
+func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
+ return 0, errNotImplemented
+}
+
+func setsockopt(s uintptr, level, name int, b []byte) error {
+ return errNotImplemented
+}
+
+func recvmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ return 0, errNotImplemented
+}
+
+func sendmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ return 0, errNotImplemented
+}
+
+func recvmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ return 0, errNotImplemented
+}
+
+func sendmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ return 0, errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/internal/socket/sys_unix.go b/vendor/golang.org/x/net/internal/socket/sys_unix.go
new file mode 100644
index 0000000..0eb7128
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_unix.go
@@ -0,0 +1,33 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build dragonfly freebsd linux,!s390x,!386 netbsd openbsd
+
+package socket
+
+import (
+ "syscall"
+ "unsafe"
+)
+
+func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
+ l := uint32(len(b))
+ _, _, errno := syscall.Syscall6(syscall.SYS_GETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(unsafe.Pointer(&l)), 0)
+ return int(l), errnoErr(errno)
+}
+
+func setsockopt(s uintptr, level, name int, b []byte) error {
+ _, _, errno := syscall.Syscall6(syscall.SYS_SETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)), 0)
+ return errnoErr(errno)
+}
+
+func recvmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ n, _, errno := syscall.Syscall(syscall.SYS_RECVMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags))
+ return int(n), errnoErr(errno)
+}
+
+func sendmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ n, _, errno := syscall.Syscall(syscall.SYS_SENDMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags))
+ return int(n), errnoErr(errno)
+}
diff --git a/vendor/golang.org/x/net/internal/socket/sys_windows.go b/vendor/golang.org/x/net/internal/socket/sys_windows.go
new file mode 100644
index 0000000..d556a44
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/sys_windows.go
@@ -0,0 +1,71 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package socket
+
+import (
+ "syscall"
+ "unsafe"
+
+ "golang.org/x/sys/windows"
+)
+
+func probeProtocolStack() int {
+ var p uintptr
+ return int(unsafe.Sizeof(p))
+}
+
+const (
+ sysAF_UNSPEC = windows.AF_UNSPEC
+ sysAF_INET = windows.AF_INET
+ sysAF_INET6 = windows.AF_INET6
+
+ sysSOCK_RAW = windows.SOCK_RAW
+)
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]uint8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
+
+func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
+ l := uint32(len(b))
+ err := syscall.Getsockopt(syscall.Handle(s), int32(level), int32(name), (*byte)(unsafe.Pointer(&b[0])), (*int32)(unsafe.Pointer(&l)))
+ return int(l), err
+}
+
+func setsockopt(s uintptr, level, name int, b []byte) error {
+ return syscall.Setsockopt(syscall.Handle(s), int32(level), int32(name), (*byte)(unsafe.Pointer(&b[0])), int32(len(b)))
+}
+
+func recvmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ return 0, errNotImplemented
+}
+
+func sendmsg(s uintptr, h *msghdr, flags int) (int, error) {
+ return 0, errNotImplemented
+}
+
+func recvmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ return 0, errNotImplemented
+}
+
+func sendmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
+ return 0, errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_aix_ppc64.go b/vendor/golang.org/x/net/internal/socket/zsys_aix_ppc64.go
new file mode 100644
index 0000000..e740c8f
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_aix_ppc64.go
@@ -0,0 +1,60 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_aix.go
+
+// Added for go1.11 compatibility
+// +build aix
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Iov *iovec
+ Iovlen int32
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+ Pad_cgo_0 [4]byte
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]uint8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x30
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_darwin_386.go b/vendor/golang.org/x/net/internal/socket/zsys_darwin_386.go
new file mode 100644
index 0000000..083bda5
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_darwin_386.go
@@ -0,0 +1,51 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_darwin.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint32
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Iov *iovec
+ Iovlen int32
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x8
+ sizeofMsghdr = 0x1c
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_darwin_amd64.go b/vendor/golang.org/x/net/internal/socket/zsys_darwin_amd64.go
new file mode 100644
index 0000000..55c6c9f
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_darwin_amd64.go
@@ -0,0 +1,53 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_darwin.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen int32
+ Pad_cgo_1 [4]byte
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x30
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_darwin_arm.go b/vendor/golang.org/x/net/internal/socket/zsys_darwin_arm.go
new file mode 100644
index 0000000..083bda5
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_darwin_arm.go
@@ -0,0 +1,51 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_darwin.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint32
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Iov *iovec
+ Iovlen int32
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x8
+ sizeofMsghdr = 0x1c
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_darwin_arm64.go b/vendor/golang.org/x/net/internal/socket/zsys_darwin_arm64.go
new file mode 100644
index 0000000..55c6c9f
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_darwin_arm64.go
@@ -0,0 +1,53 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_darwin.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen int32
+ Pad_cgo_1 [4]byte
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x30
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_dragonfly_amd64.go b/vendor/golang.org/x/net/internal/socket/zsys_dragonfly_amd64.go
new file mode 100644
index 0000000..8b7d161
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_dragonfly_amd64.go
@@ -0,0 +1,53 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_dragonfly.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen int32
+ Pad_cgo_1 [4]byte
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x30
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_freebsd_386.go b/vendor/golang.org/x/net/internal/socket/zsys_freebsd_386.go
new file mode 100644
index 0000000..3e71ff5
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_freebsd_386.go
@@ -0,0 +1,51 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_freebsd.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint32
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Iov *iovec
+ Iovlen int32
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x8
+ sizeofMsghdr = 0x1c
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_freebsd_amd64.go b/vendor/golang.org/x/net/internal/socket/zsys_freebsd_amd64.go
new file mode 100644
index 0000000..238d90d
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_freebsd_amd64.go
@@ -0,0 +1,53 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_freebsd.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen int32
+ Pad_cgo_1 [4]byte
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x30
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_freebsd_arm.go b/vendor/golang.org/x/net/internal/socket/zsys_freebsd_arm.go
new file mode 100644
index 0000000..3e71ff5
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_freebsd_arm.go
@@ -0,0 +1,51 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_freebsd.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint32
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Iov *iovec
+ Iovlen int32
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x8
+ sizeofMsghdr = 0x1c
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_freebsd_arm64.go b/vendor/golang.org/x/net/internal/socket/zsys_freebsd_arm64.go
new file mode 100644
index 0000000..238d90d
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_freebsd_arm64.go
@@ -0,0 +1,53 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_freebsd.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen int32
+ Pad_cgo_1 [4]byte
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x30
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_linux_386.go b/vendor/golang.org/x/net/internal/socket/zsys_linux_386.go
new file mode 100644
index 0000000..d33025b
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_linux_386.go
@@ -0,0 +1,54 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint32
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Iov *iovec
+ Iovlen uint32
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x8
+ sizeofMsghdr = 0x1c
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_linux_amd64.go b/vendor/golang.org/x/net/internal/socket/zsys_linux_amd64.go
new file mode 100644
index 0000000..b20d216
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_linux_amd64.go
@@ -0,0 +1,57 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen uint64
+ Control *byte
+ Controllen uint64
+ Flags int32
+ Pad_cgo_1 [4]byte
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+ Pad_cgo_0 [4]byte
+}
+
+type cmsghdr struct {
+ Len uint64
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x38
+ sizeofCmsghdr = 0x10
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_linux_arm.go b/vendor/golang.org/x/net/internal/socket/zsys_linux_arm.go
new file mode 100644
index 0000000..1bb10a4
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_linux_arm.go
@@ -0,0 +1,55 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint32
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Iov *iovec
+ Iovlen uint32
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x8
+ sizeofMsghdr = 0x1c
+
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_linux_arm64.go b/vendor/golang.org/x/net/internal/socket/zsys_linux_arm64.go
new file mode 100644
index 0000000..7f6e8a7
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_linux_arm64.go
@@ -0,0 +1,58 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen uint64
+ Control *byte
+ Controllen uint64
+ Flags int32
+ Pad_cgo_1 [4]byte
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+ Pad_cgo_0 [4]byte
+}
+
+type cmsghdr struct {
+ Len uint64
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x38
+
+ sizeofCmsghdr = 0x10
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_linux_mips.go b/vendor/golang.org/x/net/internal/socket/zsys_linux_mips.go
new file mode 100644
index 0000000..1bb10a4
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_linux_mips.go
@@ -0,0 +1,55 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint32
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Iov *iovec
+ Iovlen uint32
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x8
+ sizeofMsghdr = 0x1c
+
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_linux_mips64.go b/vendor/golang.org/x/net/internal/socket/zsys_linux_mips64.go
new file mode 100644
index 0000000..7f6e8a7
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_linux_mips64.go
@@ -0,0 +1,58 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen uint64
+ Control *byte
+ Controllen uint64
+ Flags int32
+ Pad_cgo_1 [4]byte
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+ Pad_cgo_0 [4]byte
+}
+
+type cmsghdr struct {
+ Len uint64
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x38
+
+ sizeofCmsghdr = 0x10
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_linux_mips64le.go b/vendor/golang.org/x/net/internal/socket/zsys_linux_mips64le.go
new file mode 100644
index 0000000..7f6e8a7
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_linux_mips64le.go
@@ -0,0 +1,58 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen uint64
+ Control *byte
+ Controllen uint64
+ Flags int32
+ Pad_cgo_1 [4]byte
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+ Pad_cgo_0 [4]byte
+}
+
+type cmsghdr struct {
+ Len uint64
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x38
+
+ sizeofCmsghdr = 0x10
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_linux_mipsle.go b/vendor/golang.org/x/net/internal/socket/zsys_linux_mipsle.go
new file mode 100644
index 0000000..1bb10a4
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_linux_mipsle.go
@@ -0,0 +1,55 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint32
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Iov *iovec
+ Iovlen uint32
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x8
+ sizeofMsghdr = 0x1c
+
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_linux_ppc64.go b/vendor/golang.org/x/net/internal/socket/zsys_linux_ppc64.go
new file mode 100644
index 0000000..7f6e8a7
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_linux_ppc64.go
@@ -0,0 +1,58 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen uint64
+ Control *byte
+ Controllen uint64
+ Flags int32
+ Pad_cgo_1 [4]byte
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+ Pad_cgo_0 [4]byte
+}
+
+type cmsghdr struct {
+ Len uint64
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x38
+
+ sizeofCmsghdr = 0x10
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_linux_ppc64le.go b/vendor/golang.org/x/net/internal/socket/zsys_linux_ppc64le.go
new file mode 100644
index 0000000..7f6e8a7
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_linux_ppc64le.go
@@ -0,0 +1,58 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen uint64
+ Control *byte
+ Controllen uint64
+ Flags int32
+ Pad_cgo_1 [4]byte
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+ Pad_cgo_0 [4]byte
+}
+
+type cmsghdr struct {
+ Len uint64
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x38
+
+ sizeofCmsghdr = 0x10
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_linux_riscv64.go b/vendor/golang.org/x/net/internal/socket/zsys_linux_riscv64.go
new file mode 100644
index 0000000..f12a1d7
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_linux_riscv64.go
@@ -0,0 +1,59 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+// +build riscv64
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Iov *iovec
+ Iovlen uint64
+ Control *byte
+ Controllen uint64
+ Flags int32
+ Pad_cgo_0 [4]byte
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+ Pad_cgo_0 [4]byte
+}
+
+type cmsghdr struct {
+ Len uint64
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x38
+
+ sizeofCmsghdr = 0x10
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_linux_s390x.go b/vendor/golang.org/x/net/internal/socket/zsys_linux_s390x.go
new file mode 100644
index 0000000..7f6e8a7
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_linux_s390x.go
@@ -0,0 +1,58 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen uint64
+ Control *byte
+ Controllen uint64
+ Flags int32
+ Pad_cgo_1 [4]byte
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+ Pad_cgo_0 [4]byte
+}
+
+type cmsghdr struct {
+ Len uint64
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x38
+
+ sizeofCmsghdr = 0x10
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_netbsd_386.go b/vendor/golang.org/x/net/internal/socket/zsys_netbsd_386.go
new file mode 100644
index 0000000..7e258ce
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_netbsd_386.go
@@ -0,0 +1,57 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_netbsd.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint32
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Iov *iovec
+ Iovlen int32
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x8
+ sizeofMsghdr = 0x1c
+
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_netbsd_amd64.go b/vendor/golang.org/x/net/internal/socket/zsys_netbsd_amd64.go
new file mode 100644
index 0000000..b3f9c0d
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_netbsd_amd64.go
@@ -0,0 +1,60 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_netbsd.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen int32
+ Pad_cgo_1 [4]byte
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+ Pad_cgo_0 [4]byte
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x30
+
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_netbsd_arm.go b/vendor/golang.org/x/net/internal/socket/zsys_netbsd_arm.go
new file mode 100644
index 0000000..7e258ce
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_netbsd_arm.go
@@ -0,0 +1,57 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_netbsd.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint32
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Iov *iovec
+ Iovlen int32
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x8
+ sizeofMsghdr = 0x1c
+
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_netbsd_arm64.go b/vendor/golang.org/x/net/internal/socket/zsys_netbsd_arm64.go
new file mode 100644
index 0000000..da26ef0
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_netbsd_arm64.go
@@ -0,0 +1,59 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_netbsd.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen int32
+ Pad_cgo_1 [4]byte
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type mmsghdr struct {
+ Hdr msghdr
+ Len uint32
+ Pad_cgo_0 [4]byte
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x30
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_openbsd_386.go b/vendor/golang.org/x/net/internal/socket/zsys_openbsd_386.go
new file mode 100644
index 0000000..73655a1
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_openbsd_386.go
@@ -0,0 +1,51 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_openbsd.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint32
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Iov *iovec
+ Iovlen uint32
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x8
+ sizeofMsghdr = 0x1c
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_openbsd_amd64.go b/vendor/golang.org/x/net/internal/socket/zsys_openbsd_amd64.go
new file mode 100644
index 0000000..0a4de80
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_openbsd_amd64.go
@@ -0,0 +1,53 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_openbsd.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen uint32
+ Pad_cgo_1 [4]byte
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x30
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_openbsd_arm.go b/vendor/golang.org/x/net/internal/socket/zsys_openbsd_arm.go
new file mode 100644
index 0000000..73655a1
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_openbsd_arm.go
@@ -0,0 +1,51 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_openbsd.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint32
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Iov *iovec
+ Iovlen uint32
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x8
+ sizeofMsghdr = 0x1c
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_openbsd_arm64.go b/vendor/golang.org/x/net/internal/socket/zsys_openbsd_arm64.go
new file mode 100644
index 0000000..0a4de80
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_openbsd_arm64.go
@@ -0,0 +1,53 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_openbsd.go
+
+package socket
+
+type iovec struct {
+ Base *byte
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen uint32
+ Pad_cgo_1 [4]byte
+ Control *byte
+ Controllen uint32
+ Flags int32
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x30
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x1c
+)
diff --git a/vendor/golang.org/x/net/internal/socket/zsys_solaris_amd64.go b/vendor/golang.org/x/net/internal/socket/zsys_solaris_amd64.go
new file mode 100644
index 0000000..353cd5f
--- /dev/null
+++ b/vendor/golang.org/x/net/internal/socket/zsys_solaris_amd64.go
@@ -0,0 +1,52 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_solaris.go
+
+package socket
+
+type iovec struct {
+ Base *int8
+ Len uint64
+}
+
+type msghdr struct {
+ Name *byte
+ Namelen uint32
+ Pad_cgo_0 [4]byte
+ Iov *iovec
+ Iovlen int32
+ Pad_cgo_1 [4]byte
+ Accrights *int8
+ Accrightslen int32
+ Pad_cgo_2 [4]byte
+}
+
+type cmsghdr struct {
+ Len uint32
+ Level int32
+ Type int32
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+ X__sin6_src_id uint32
+}
+
+const (
+ sizeofIovec = 0x10
+ sizeofMsghdr = 0x30
+ sizeofCmsghdr = 0xc
+
+ sizeofSockaddrInet = 0x10
+ sizeofSockaddrInet6 = 0x20
+)
diff --git a/vendor/golang.org/x/net/ipv4/batch.go b/vendor/golang.org/x/net/ipv4/batch.go
new file mode 100644
index 0000000..1a3a4fc
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/batch.go
@@ -0,0 +1,194 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "net"
+ "runtime"
+
+ "golang.org/x/net/internal/socket"
+)
+
+// BUG(mikio): On Windows, the ReadBatch and WriteBatch methods of
+// PacketConn are not implemented.
+
+// BUG(mikio): On Windows, the ReadBatch and WriteBatch methods of
+// RawConn are not implemented.
+
+// A Message represents an IO message.
+//
+// type Message struct {
+// Buffers [][]byte
+// OOB []byte
+// Addr net.Addr
+// N int
+// NN int
+// Flags int
+// }
+//
+// The Buffers fields represents a list of contiguous buffers, which
+// can be used for vectored IO, for example, putting a header and a
+// payload in each slice.
+// When writing, the Buffers field must contain at least one byte to
+// write.
+// When reading, the Buffers field will always contain a byte to read.
+//
+// The OOB field contains protocol-specific control or miscellaneous
+// ancillary data known as out-of-band data.
+// It can be nil when not required.
+//
+// The Addr field specifies a destination address when writing.
+// It can be nil when the underlying protocol of the endpoint uses
+// connection-oriented communication.
+// After a successful read, it may contain the source address on the
+// received packet.
+//
+// The N field indicates the number of bytes read or written from/to
+// Buffers.
+//
+// The NN field indicates the number of bytes read or written from/to
+// OOB.
+//
+// The Flags field contains protocol-specific information on the
+// received message.
+type Message = socket.Message
+
+// ReadBatch reads a batch of messages.
+//
+// The provided flags is a set of platform-dependent flags, such as
+// syscall.MSG_PEEK.
+//
+// On a successful read it returns the number of messages received, up
+// to len(ms).
+//
+// On Linux, a batch read will be optimized.
+// On other platforms, this method will read only a single message.
+//
+// Unlike the ReadFrom method, it doesn't strip the IPv4 header
+// followed by option headers from the received IPv4 datagram when the
+// underlying transport is net.IPConn. Each Buffers field of Message
+// must be large enough to accommodate an IPv4 header and option
+// headers.
+func (c *payloadHandler) ReadBatch(ms []Message, flags int) (int, error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ switch runtime.GOOS {
+ case "linux":
+ n, err := c.RecvMsgs([]socket.Message(ms), flags)
+ if err != nil {
+ err = &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
+ }
+ return n, err
+ default:
+ n := 1
+ err := c.RecvMsg(&ms[0], flags)
+ if err != nil {
+ n = 0
+ err = &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
+ }
+ if compatFreeBSD32 && ms[0].NN > 0 {
+ adjustFreeBSD32(&ms[0])
+ }
+ return n, err
+ }
+}
+
+// WriteBatch writes a batch of messages.
+//
+// The provided flags is a set of platform-dependent flags, such as
+// syscall.MSG_DONTROUTE.
+//
+// It returns the number of messages written on a successful write.
+//
+// On Linux, a batch write will be optimized.
+// On other platforms, this method will write only a single message.
+func (c *payloadHandler) WriteBatch(ms []Message, flags int) (int, error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ switch runtime.GOOS {
+ case "linux":
+ n, err := c.SendMsgs([]socket.Message(ms), flags)
+ if err != nil {
+ err = &net.OpError{Op: "write", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
+ }
+ return n, err
+ default:
+ n := 1
+ err := c.SendMsg(&ms[0], flags)
+ if err != nil {
+ n = 0
+ err = &net.OpError{Op: "write", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
+ }
+ return n, err
+ }
+}
+
+// ReadBatch reads a batch of messages.
+//
+// The provided flags is a set of platform-dependent flags, such as
+// syscall.MSG_PEEK.
+//
+// On a successful read it returns the number of messages received, up
+// to len(ms).
+//
+// On Linux, a batch read will be optimized.
+// On other platforms, this method will read only a single message.
+func (c *packetHandler) ReadBatch(ms []Message, flags int) (int, error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ switch runtime.GOOS {
+ case "linux":
+ n, err := c.RecvMsgs([]socket.Message(ms), flags)
+ if err != nil {
+ err = &net.OpError{Op: "read", Net: c.IPConn.LocalAddr().Network(), Source: c.IPConn.LocalAddr(), Err: err}
+ }
+ return n, err
+ default:
+ n := 1
+ err := c.RecvMsg(&ms[0], flags)
+ if err != nil {
+ n = 0
+ err = &net.OpError{Op: "read", Net: c.IPConn.LocalAddr().Network(), Source: c.IPConn.LocalAddr(), Err: err}
+ }
+ if compatFreeBSD32 && ms[0].NN > 0 {
+ adjustFreeBSD32(&ms[0])
+ }
+ return n, err
+ }
+}
+
+// WriteBatch writes a batch of messages.
+//
+// The provided flags is a set of platform-dependent flags, such as
+// syscall.MSG_DONTROUTE.
+//
+// It returns the number of messages written on a successful write.
+//
+// On Linux, a batch write will be optimized.
+// On other platforms, this method will write only a single message.
+func (c *packetHandler) WriteBatch(ms []Message, flags int) (int, error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ switch runtime.GOOS {
+ case "linux":
+ n, err := c.SendMsgs([]socket.Message(ms), flags)
+ if err != nil {
+ err = &net.OpError{Op: "write", Net: c.IPConn.LocalAddr().Network(), Source: c.IPConn.LocalAddr(), Err: err}
+ }
+ return n, err
+ default:
+ n := 1
+ err := c.SendMsg(&ms[0], flags)
+ if err != nil {
+ n = 0
+ err = &net.OpError{Op: "write", Net: c.IPConn.LocalAddr().Network(), Source: c.IPConn.LocalAddr(), Err: err}
+ }
+ return n, err
+ }
+}
diff --git a/vendor/golang.org/x/net/ipv4/control.go b/vendor/golang.org/x/net/ipv4/control.go
new file mode 100644
index 0000000..a2b02ca
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/control.go
@@ -0,0 +1,144 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "fmt"
+ "net"
+ "sync"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+type rawOpt struct {
+ sync.RWMutex
+ cflags ControlFlags
+}
+
+func (c *rawOpt) set(f ControlFlags) { c.cflags |= f }
+func (c *rawOpt) clear(f ControlFlags) { c.cflags &^= f }
+func (c *rawOpt) isset(f ControlFlags) bool { return c.cflags&f != 0 }
+
+type ControlFlags uint
+
+const (
+ FlagTTL ControlFlags = 1 << iota // pass the TTL on the received packet
+ FlagSrc // pass the source address on the received packet
+ FlagDst // pass the destination address on the received packet
+ FlagInterface // pass the interface index on the received packet
+)
+
+// A ControlMessage represents per packet basis IP-level socket options.
+type ControlMessage struct {
+ // Receiving socket options: SetControlMessage allows to
+ // receive the options from the protocol stack using ReadFrom
+ // method of PacketConn or RawConn.
+ //
+ // Specifying socket options: ControlMessage for WriteTo
+ // method of PacketConn or RawConn allows to send the options
+ // to the protocol stack.
+ //
+ TTL int // time-to-live, receiving only
+ Src net.IP // source address, specifying only
+ Dst net.IP // destination address, receiving only
+ IfIndex int // interface index, must be 1 <= value when specifying
+}
+
+func (cm *ControlMessage) String() string {
+ if cm == nil {
+ return ""
+ }
+ return fmt.Sprintf("ttl=%d src=%v dst=%v ifindex=%d", cm.TTL, cm.Src, cm.Dst, cm.IfIndex)
+}
+
+// Marshal returns the binary encoding of cm.
+func (cm *ControlMessage) Marshal() []byte {
+ if cm == nil {
+ return nil
+ }
+ var m socket.ControlMessage
+ if ctlOpts[ctlPacketInfo].name > 0 && (cm.Src.To4() != nil || cm.IfIndex > 0) {
+ m = socket.NewControlMessage([]int{ctlOpts[ctlPacketInfo].length})
+ }
+ if len(m) > 0 {
+ ctlOpts[ctlPacketInfo].marshal(m, cm)
+ }
+ return m
+}
+
+// Parse parses b as a control message and stores the result in cm.
+func (cm *ControlMessage) Parse(b []byte) error {
+ ms, err := socket.ControlMessage(b).Parse()
+ if err != nil {
+ return err
+ }
+ for _, m := range ms {
+ lvl, typ, l, err := m.ParseHeader()
+ if err != nil {
+ return err
+ }
+ if lvl != iana.ProtocolIP {
+ continue
+ }
+ switch {
+ case typ == ctlOpts[ctlTTL].name && l >= ctlOpts[ctlTTL].length:
+ ctlOpts[ctlTTL].parse(cm, m.Data(l))
+ case typ == ctlOpts[ctlDst].name && l >= ctlOpts[ctlDst].length:
+ ctlOpts[ctlDst].parse(cm, m.Data(l))
+ case typ == ctlOpts[ctlInterface].name && l >= ctlOpts[ctlInterface].length:
+ ctlOpts[ctlInterface].parse(cm, m.Data(l))
+ case typ == ctlOpts[ctlPacketInfo].name && l >= ctlOpts[ctlPacketInfo].length:
+ ctlOpts[ctlPacketInfo].parse(cm, m.Data(l))
+ }
+ }
+ return nil
+}
+
+// NewControlMessage returns a new control message.
+//
+// The returned message is large enough for options specified by cf.
+func NewControlMessage(cf ControlFlags) []byte {
+ opt := rawOpt{cflags: cf}
+ var l int
+ if opt.isset(FlagTTL) && ctlOpts[ctlTTL].name > 0 {
+ l += socket.ControlMessageSpace(ctlOpts[ctlTTL].length)
+ }
+ if ctlOpts[ctlPacketInfo].name > 0 {
+ if opt.isset(FlagSrc | FlagDst | FlagInterface) {
+ l += socket.ControlMessageSpace(ctlOpts[ctlPacketInfo].length)
+ }
+ } else {
+ if opt.isset(FlagDst) && ctlOpts[ctlDst].name > 0 {
+ l += socket.ControlMessageSpace(ctlOpts[ctlDst].length)
+ }
+ if opt.isset(FlagInterface) && ctlOpts[ctlInterface].name > 0 {
+ l += socket.ControlMessageSpace(ctlOpts[ctlInterface].length)
+ }
+ }
+ var b []byte
+ if l > 0 {
+ b = make([]byte, l)
+ }
+ return b
+}
+
+// Ancillary data socket options
+const (
+ ctlTTL = iota // header field
+ ctlSrc // header field
+ ctlDst // header field
+ ctlInterface // inbound or outbound interface
+ ctlPacketInfo // inbound or outbound packet path
+ ctlMax
+)
+
+// A ctlOpt represents a binding for ancillary data socket option.
+type ctlOpt struct {
+ name int // option name, must be equal or greater than 1
+ length int // option length
+ marshal func([]byte, *ControlMessage) []byte
+ parse func(*ControlMessage, []byte)
+}
diff --git a/vendor/golang.org/x/net/ipv4/control_bsd.go b/vendor/golang.org/x/net/ipv4/control_bsd.go
new file mode 100644
index 0000000..19845c5
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/control_bsd.go
@@ -0,0 +1,40 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd netbsd openbsd
+
+package ipv4
+
+import (
+ "net"
+ "syscall"
+ "unsafe"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+func marshalDst(b []byte, cm *ControlMessage) []byte {
+ m := socket.ControlMessage(b)
+ m.MarshalHeader(iana.ProtocolIP, sysIP_RECVDSTADDR, net.IPv4len)
+ return m.Next(net.IPv4len)
+}
+
+func parseDst(cm *ControlMessage, b []byte) {
+ if len(cm.Dst) < net.IPv4len {
+ cm.Dst = make(net.IP, net.IPv4len)
+ }
+ copy(cm.Dst, b[:net.IPv4len])
+}
+
+func marshalInterface(b []byte, cm *ControlMessage) []byte {
+ m := socket.ControlMessage(b)
+ m.MarshalHeader(iana.ProtocolIP, sysIP_RECVIF, syscall.SizeofSockaddrDatalink)
+ return m.Next(syscall.SizeofSockaddrDatalink)
+}
+
+func parseInterface(cm *ControlMessage, b []byte) {
+ sadl := (*syscall.SockaddrDatalink)(unsafe.Pointer(&b[0]))
+ cm.IfIndex = int(sadl.Index)
+}
diff --git a/vendor/golang.org/x/net/ipv4/control_pktinfo.go b/vendor/golang.org/x/net/ipv4/control_pktinfo.go
new file mode 100644
index 0000000..425338f
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/control_pktinfo.go
@@ -0,0 +1,39 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin linux solaris
+
+package ipv4
+
+import (
+ "net"
+ "unsafe"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+func marshalPacketInfo(b []byte, cm *ControlMessage) []byte {
+ m := socket.ControlMessage(b)
+ m.MarshalHeader(iana.ProtocolIP, sysIP_PKTINFO, sizeofInetPktinfo)
+ if cm != nil {
+ pi := (*inetPktinfo)(unsafe.Pointer(&m.Data(sizeofInetPktinfo)[0]))
+ if ip := cm.Src.To4(); ip != nil {
+ copy(pi.Spec_dst[:], ip)
+ }
+ if cm.IfIndex > 0 {
+ pi.setIfindex(cm.IfIndex)
+ }
+ }
+ return m.Next(sizeofInetPktinfo)
+}
+
+func parsePacketInfo(cm *ControlMessage, b []byte) {
+ pi := (*inetPktinfo)(unsafe.Pointer(&b[0]))
+ cm.IfIndex = int(pi.Ifindex)
+ if len(cm.Dst) < net.IPv4len {
+ cm.Dst = make(net.IP, net.IPv4len)
+ }
+ copy(cm.Dst, pi.Addr[:])
+}
diff --git a/vendor/golang.org/x/net/ipv4/control_stub.go b/vendor/golang.org/x/net/ipv4/control_stub.go
new file mode 100644
index 0000000..a0c049d
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/control_stub.go
@@ -0,0 +1,13 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+
+package ipv4
+
+import "golang.org/x/net/internal/socket"
+
+func setControlMessage(c *socket.Conn, opt *rawOpt, cf ControlFlags, on bool) error {
+ return errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/ipv4/control_unix.go b/vendor/golang.org/x/net/ipv4/control_unix.go
new file mode 100644
index 0000000..b27fa49
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/control_unix.go
@@ -0,0 +1,73 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package ipv4
+
+import (
+ "unsafe"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+func setControlMessage(c *socket.Conn, opt *rawOpt, cf ControlFlags, on bool) error {
+ opt.Lock()
+ defer opt.Unlock()
+ if so, ok := sockOpts[ssoReceiveTTL]; ok && cf&FlagTTL != 0 {
+ if err := so.SetInt(c, boolint(on)); err != nil {
+ return err
+ }
+ if on {
+ opt.set(FlagTTL)
+ } else {
+ opt.clear(FlagTTL)
+ }
+ }
+ if so, ok := sockOpts[ssoPacketInfo]; ok {
+ if cf&(FlagSrc|FlagDst|FlagInterface) != 0 {
+ if err := so.SetInt(c, boolint(on)); err != nil {
+ return err
+ }
+ if on {
+ opt.set(cf & (FlagSrc | FlagDst | FlagInterface))
+ } else {
+ opt.clear(cf & (FlagSrc | FlagDst | FlagInterface))
+ }
+ }
+ } else {
+ if so, ok := sockOpts[ssoReceiveDst]; ok && cf&FlagDst != 0 {
+ if err := so.SetInt(c, boolint(on)); err != nil {
+ return err
+ }
+ if on {
+ opt.set(FlagDst)
+ } else {
+ opt.clear(FlagDst)
+ }
+ }
+ if so, ok := sockOpts[ssoReceiveInterface]; ok && cf&FlagInterface != 0 {
+ if err := so.SetInt(c, boolint(on)); err != nil {
+ return err
+ }
+ if on {
+ opt.set(FlagInterface)
+ } else {
+ opt.clear(FlagInterface)
+ }
+ }
+ }
+ return nil
+}
+
+func marshalTTL(b []byte, cm *ControlMessage) []byte {
+ m := socket.ControlMessage(b)
+ m.MarshalHeader(iana.ProtocolIP, sysIP_RECVTTL, 1)
+ return m.Next(1)
+}
+
+func parseTTL(cm *ControlMessage, b []byte) {
+ cm.TTL = int(*(*byte)(unsafe.Pointer(&b[:1][0])))
+}
diff --git a/vendor/golang.org/x/net/ipv4/control_windows.go b/vendor/golang.org/x/net/ipv4/control_windows.go
new file mode 100644
index 0000000..82c6306
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/control_windows.go
@@ -0,0 +1,12 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import "golang.org/x/net/internal/socket"
+
+func setControlMessage(c *socket.Conn, opt *rawOpt, cf ControlFlags, on bool) error {
+ // TODO(mikio): implement this
+ return errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/ipv4/dgramopt.go b/vendor/golang.org/x/net/ipv4/dgramopt.go
new file mode 100644
index 0000000..c191c22
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/dgramopt.go
@@ -0,0 +1,264 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "net"
+
+ "golang.org/x/net/bpf"
+)
+
+// MulticastTTL returns the time-to-live field value for outgoing
+// multicast packets.
+func (c *dgramOpt) MulticastTTL() (int, error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ so, ok := sockOpts[ssoMulticastTTL]
+ if !ok {
+ return 0, errNotImplemented
+ }
+ return so.GetInt(c.Conn)
+}
+
+// SetMulticastTTL sets the time-to-live field value for future
+// outgoing multicast packets.
+func (c *dgramOpt) SetMulticastTTL(ttl int) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoMulticastTTL]
+ if !ok {
+ return errNotImplemented
+ }
+ return so.SetInt(c.Conn, ttl)
+}
+
+// MulticastInterface returns the default interface for multicast
+// packet transmissions.
+func (c *dgramOpt) MulticastInterface() (*net.Interface, error) {
+ if !c.ok() {
+ return nil, errInvalidConn
+ }
+ so, ok := sockOpts[ssoMulticastInterface]
+ if !ok {
+ return nil, errNotImplemented
+ }
+ return so.getMulticastInterface(c.Conn)
+}
+
+// SetMulticastInterface sets the default interface for future
+// multicast packet transmissions.
+func (c *dgramOpt) SetMulticastInterface(ifi *net.Interface) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoMulticastInterface]
+ if !ok {
+ return errNotImplemented
+ }
+ return so.setMulticastInterface(c.Conn, ifi)
+}
+
+// MulticastLoopback reports whether transmitted multicast packets
+// should be copied and send back to the originator.
+func (c *dgramOpt) MulticastLoopback() (bool, error) {
+ if !c.ok() {
+ return false, errInvalidConn
+ }
+ so, ok := sockOpts[ssoMulticastLoopback]
+ if !ok {
+ return false, errNotImplemented
+ }
+ on, err := so.GetInt(c.Conn)
+ if err != nil {
+ return false, err
+ }
+ return on == 1, nil
+}
+
+// SetMulticastLoopback sets whether transmitted multicast packets
+// should be copied and send back to the originator.
+func (c *dgramOpt) SetMulticastLoopback(on bool) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoMulticastLoopback]
+ if !ok {
+ return errNotImplemented
+ }
+ return so.SetInt(c.Conn, boolint(on))
+}
+
+// JoinGroup joins the group address group on the interface ifi.
+// By default all sources that can cast data to group are accepted.
+// It's possible to mute and unmute data transmission from a specific
+// source by using ExcludeSourceSpecificGroup and
+// IncludeSourceSpecificGroup.
+// JoinGroup uses the system assigned multicast interface when ifi is
+// nil, although this is not recommended because the assignment
+// depends on platforms and sometimes it might require routing
+// configuration.
+func (c *dgramOpt) JoinGroup(ifi *net.Interface, group net.Addr) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoJoinGroup]
+ if !ok {
+ return errNotImplemented
+ }
+ grp := netAddrToIP4(group)
+ if grp == nil {
+ return errMissingAddress
+ }
+ return so.setGroup(c.Conn, ifi, grp)
+}
+
+// LeaveGroup leaves the group address group on the interface ifi
+// regardless of whether the group is any-source group or
+// source-specific group.
+func (c *dgramOpt) LeaveGroup(ifi *net.Interface, group net.Addr) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoLeaveGroup]
+ if !ok {
+ return errNotImplemented
+ }
+ grp := netAddrToIP4(group)
+ if grp == nil {
+ return errMissingAddress
+ }
+ return so.setGroup(c.Conn, ifi, grp)
+}
+
+// JoinSourceSpecificGroup joins the source-specific group comprising
+// group and source on the interface ifi.
+// JoinSourceSpecificGroup uses the system assigned multicast
+// interface when ifi is nil, although this is not recommended because
+// the assignment depends on platforms and sometimes it might require
+// routing configuration.
+func (c *dgramOpt) JoinSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoJoinSourceGroup]
+ if !ok {
+ return errNotImplemented
+ }
+ grp := netAddrToIP4(group)
+ if grp == nil {
+ return errMissingAddress
+ }
+ src := netAddrToIP4(source)
+ if src == nil {
+ return errMissingAddress
+ }
+ return so.setSourceGroup(c.Conn, ifi, grp, src)
+}
+
+// LeaveSourceSpecificGroup leaves the source-specific group on the
+// interface ifi.
+func (c *dgramOpt) LeaveSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoLeaveSourceGroup]
+ if !ok {
+ return errNotImplemented
+ }
+ grp := netAddrToIP4(group)
+ if grp == nil {
+ return errMissingAddress
+ }
+ src := netAddrToIP4(source)
+ if src == nil {
+ return errMissingAddress
+ }
+ return so.setSourceGroup(c.Conn, ifi, grp, src)
+}
+
+// ExcludeSourceSpecificGroup excludes the source-specific group from
+// the already joined any-source groups by JoinGroup on the interface
+// ifi.
+func (c *dgramOpt) ExcludeSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoBlockSourceGroup]
+ if !ok {
+ return errNotImplemented
+ }
+ grp := netAddrToIP4(group)
+ if grp == nil {
+ return errMissingAddress
+ }
+ src := netAddrToIP4(source)
+ if src == nil {
+ return errMissingAddress
+ }
+ return so.setSourceGroup(c.Conn, ifi, grp, src)
+}
+
+// IncludeSourceSpecificGroup includes the excluded source-specific
+// group by ExcludeSourceSpecificGroup again on the interface ifi.
+func (c *dgramOpt) IncludeSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoUnblockSourceGroup]
+ if !ok {
+ return errNotImplemented
+ }
+ grp := netAddrToIP4(group)
+ if grp == nil {
+ return errMissingAddress
+ }
+ src := netAddrToIP4(source)
+ if src == nil {
+ return errMissingAddress
+ }
+ return so.setSourceGroup(c.Conn, ifi, grp, src)
+}
+
+// ICMPFilter returns an ICMP filter.
+// Currently only Linux supports this.
+func (c *dgramOpt) ICMPFilter() (*ICMPFilter, error) {
+ if !c.ok() {
+ return nil, errInvalidConn
+ }
+ so, ok := sockOpts[ssoICMPFilter]
+ if !ok {
+ return nil, errNotImplemented
+ }
+ return so.getICMPFilter(c.Conn)
+}
+
+// SetICMPFilter deploys the ICMP filter.
+// Currently only Linux supports this.
+func (c *dgramOpt) SetICMPFilter(f *ICMPFilter) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoICMPFilter]
+ if !ok {
+ return errNotImplemented
+ }
+ return so.setICMPFilter(c.Conn, f)
+}
+
+// SetBPF attaches a BPF program to the connection.
+//
+// Only supported on Linux.
+func (c *dgramOpt) SetBPF(filter []bpf.RawInstruction) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoAttachFilter]
+ if !ok {
+ return errNotImplemented
+ }
+ return so.setBPF(c.Conn, filter)
+}
diff --git a/vendor/golang.org/x/net/ipv4/doc.go b/vendor/golang.org/x/net/ipv4/doc.go
new file mode 100644
index 0000000..2458349
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/doc.go
@@ -0,0 +1,244 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package ipv4 implements IP-level socket options for the Internet
+// Protocol version 4.
+//
+// The package provides IP-level socket options that allow
+// manipulation of IPv4 facilities.
+//
+// The IPv4 protocol and basic host requirements for IPv4 are defined
+// in RFC 791 and RFC 1122.
+// Host extensions for multicasting and socket interface extensions
+// for multicast source filters are defined in RFC 1112 and RFC 3678.
+// IGMPv1, IGMPv2 and IGMPv3 are defined in RFC 1112, RFC 2236 and RFC
+// 3376.
+// Source-specific multicast is defined in RFC 4607.
+//
+//
+// Unicasting
+//
+// The options for unicasting are available for net.TCPConn,
+// net.UDPConn and net.IPConn which are created as network connections
+// that use the IPv4 transport. When a single TCP connection carrying
+// a data flow of multiple packets needs to indicate the flow is
+// important, Conn is used to set the type-of-service field on the
+// IPv4 header for each packet.
+//
+// ln, err := net.Listen("tcp4", "0.0.0.0:1024")
+// if err != nil {
+// // error handling
+// }
+// defer ln.Close()
+// for {
+// c, err := ln.Accept()
+// if err != nil {
+// // error handling
+// }
+// go func(c net.Conn) {
+// defer c.Close()
+//
+// The outgoing packets will be labeled DiffServ assured forwarding
+// class 1 low drop precedence, known as AF11 packets.
+//
+// if err := ipv4.NewConn(c).SetTOS(0x28); err != nil {
+// // error handling
+// }
+// if _, err := c.Write(data); err != nil {
+// // error handling
+// }
+// }(c)
+// }
+//
+//
+// Multicasting
+//
+// The options for multicasting are available for net.UDPConn and
+// net.IPConn which are created as network connections that use the
+// IPv4 transport. A few network facilities must be prepared before
+// you begin multicasting, at a minimum joining network interfaces and
+// multicast groups.
+//
+// en0, err := net.InterfaceByName("en0")
+// if err != nil {
+// // error handling
+// }
+// en1, err := net.InterfaceByIndex(911)
+// if err != nil {
+// // error handling
+// }
+// group := net.IPv4(224, 0, 0, 250)
+//
+// First, an application listens to an appropriate address with an
+// appropriate service port.
+//
+// c, err := net.ListenPacket("udp4", "0.0.0.0:1024")
+// if err != nil {
+// // error handling
+// }
+// defer c.Close()
+//
+// Second, the application joins multicast groups, starts listening to
+// the groups on the specified network interfaces. Note that the
+// service port for transport layer protocol does not matter with this
+// operation as joining groups affects only network and link layer
+// protocols, such as IPv4 and Ethernet.
+//
+// p := ipv4.NewPacketConn(c)
+// if err := p.JoinGroup(en0, &net.UDPAddr{IP: group}); err != nil {
+// // error handling
+// }
+// if err := p.JoinGroup(en1, &net.UDPAddr{IP: group}); err != nil {
+// // error handling
+// }
+//
+// The application might set per packet control message transmissions
+// between the protocol stack within the kernel. When the application
+// needs a destination address on an incoming packet,
+// SetControlMessage of PacketConn is used to enable control message
+// transmissions.
+//
+// if err := p.SetControlMessage(ipv4.FlagDst, true); err != nil {
+// // error handling
+// }
+//
+// The application could identify whether the received packets are
+// of interest by using the control message that contains the
+// destination address of the received packet.
+//
+// b := make([]byte, 1500)
+// for {
+// n, cm, src, err := p.ReadFrom(b)
+// if err != nil {
+// // error handling
+// }
+// if cm.Dst.IsMulticast() {
+// if cm.Dst.Equal(group) {
+// // joined group, do something
+// } else {
+// // unknown group, discard
+// continue
+// }
+// }
+//
+// The application can also send both unicast and multicast packets.
+//
+// p.SetTOS(0x0)
+// p.SetTTL(16)
+// if _, err := p.WriteTo(data, nil, src); err != nil {
+// // error handling
+// }
+// dst := &net.UDPAddr{IP: group, Port: 1024}
+// for _, ifi := range []*net.Interface{en0, en1} {
+// if err := p.SetMulticastInterface(ifi); err != nil {
+// // error handling
+// }
+// p.SetMulticastTTL(2)
+// if _, err := p.WriteTo(data, nil, dst); err != nil {
+// // error handling
+// }
+// }
+// }
+//
+//
+// More multicasting
+//
+// An application that uses PacketConn or RawConn may join multiple
+// multicast groups. For example, a UDP listener with port 1024 might
+// join two different groups across over two different network
+// interfaces by using:
+//
+// c, err := net.ListenPacket("udp4", "0.0.0.0:1024")
+// if err != nil {
+// // error handling
+// }
+// defer c.Close()
+// p := ipv4.NewPacketConn(c)
+// if err := p.JoinGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 248)}); err != nil {
+// // error handling
+// }
+// if err := p.JoinGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 249)}); err != nil {
+// // error handling
+// }
+// if err := p.JoinGroup(en1, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 249)}); err != nil {
+// // error handling
+// }
+//
+// It is possible for multiple UDP listeners that listen on the same
+// UDP port to join the same multicast group. The net package will
+// provide a socket that listens to a wildcard address with reusable
+// UDP port when an appropriate multicast address prefix is passed to
+// the net.ListenPacket or net.ListenUDP.
+//
+// c1, err := net.ListenPacket("udp4", "224.0.0.0:1024")
+// if err != nil {
+// // error handling
+// }
+// defer c1.Close()
+// c2, err := net.ListenPacket("udp4", "224.0.0.0:1024")
+// if err != nil {
+// // error handling
+// }
+// defer c2.Close()
+// p1 := ipv4.NewPacketConn(c1)
+// if err := p1.JoinGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 248)}); err != nil {
+// // error handling
+// }
+// p2 := ipv4.NewPacketConn(c2)
+// if err := p2.JoinGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 248)}); err != nil {
+// // error handling
+// }
+//
+// Also it is possible for the application to leave or rejoin a
+// multicast group on the network interface.
+//
+// if err := p.LeaveGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 248)}); err != nil {
+// // error handling
+// }
+// if err := p.JoinGroup(en0, &net.UDPAddr{IP: net.IPv4(224, 0, 0, 250)}); err != nil {
+// // error handling
+// }
+//
+//
+// Source-specific multicasting
+//
+// An application that uses PacketConn or RawConn on IGMPv3 supported
+// platform is able to join source-specific multicast groups.
+// The application may use JoinSourceSpecificGroup and
+// LeaveSourceSpecificGroup for the operation known as "include" mode,
+//
+// ssmgroup := net.UDPAddr{IP: net.IPv4(232, 7, 8, 9)}
+// ssmsource := net.UDPAddr{IP: net.IPv4(192, 168, 0, 1)}
+// if err := p.JoinSourceSpecificGroup(en0, &ssmgroup, &ssmsource); err != nil {
+// // error handling
+// }
+// if err := p.LeaveSourceSpecificGroup(en0, &ssmgroup, &ssmsource); err != nil {
+// // error handling
+// }
+//
+// or JoinGroup, ExcludeSourceSpecificGroup,
+// IncludeSourceSpecificGroup and LeaveGroup for the operation known
+// as "exclude" mode.
+//
+// exclsource := net.UDPAddr{IP: net.IPv4(192, 168, 0, 254)}
+// if err := p.JoinGroup(en0, &ssmgroup); err != nil {
+// // error handling
+// }
+// if err := p.ExcludeSourceSpecificGroup(en0, &ssmgroup, &exclsource); err != nil {
+// // error handling
+// }
+// if err := p.LeaveGroup(en0, &ssmgroup); err != nil {
+// // error handling
+// }
+//
+// Note that it depends on each platform implementation what happens
+// when an application which runs on IGMPv3 unsupported platform uses
+// JoinSourceSpecificGroup and LeaveSourceSpecificGroup.
+// In general the platform tries to fall back to conversations using
+// IGMPv1 or IGMPv2 and starts to listen to multicast traffic.
+// In the fallback case, ExcludeSourceSpecificGroup and
+// IncludeSourceSpecificGroup may return an error.
+package ipv4 // import "golang.org/x/net/ipv4"
+
+// BUG(mikio): This package is not implemented on JS, NaCl and Plan 9.
diff --git a/vendor/golang.org/x/net/ipv4/endpoint.go b/vendor/golang.org/x/net/ipv4/endpoint.go
new file mode 100644
index 0000000..4a6d7a8
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/endpoint.go
@@ -0,0 +1,186 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "net"
+ "time"
+
+ "golang.org/x/net/internal/socket"
+)
+
+// BUG(mikio): On Windows, the JoinSourceSpecificGroup,
+// LeaveSourceSpecificGroup, ExcludeSourceSpecificGroup and
+// IncludeSourceSpecificGroup methods of PacketConn and RawConn are
+// not implemented.
+
+// A Conn represents a network endpoint that uses the IPv4 transport.
+// It is used to control basic IP-level socket options such as TOS and
+// TTL.
+type Conn struct {
+ genericOpt
+}
+
+type genericOpt struct {
+ *socket.Conn
+}
+
+func (c *genericOpt) ok() bool { return c != nil && c.Conn != nil }
+
+// NewConn returns a new Conn.
+func NewConn(c net.Conn) *Conn {
+ cc, _ := socket.NewConn(c)
+ return &Conn{
+ genericOpt: genericOpt{Conn: cc},
+ }
+}
+
+// A PacketConn represents a packet network endpoint that uses the
+// IPv4 transport. It is used to control several IP-level socket
+// options including multicasting. It also provides datagram based
+// network I/O methods specific to the IPv4 and higher layer protocols
+// such as UDP.
+type PacketConn struct {
+ genericOpt
+ dgramOpt
+ payloadHandler
+}
+
+type dgramOpt struct {
+ *socket.Conn
+}
+
+func (c *dgramOpt) ok() bool { return c != nil && c.Conn != nil }
+
+// SetControlMessage sets the per packet IP-level socket options.
+func (c *PacketConn) SetControlMessage(cf ControlFlags, on bool) error {
+ if !c.payloadHandler.ok() {
+ return errInvalidConn
+ }
+ return setControlMessage(c.dgramOpt.Conn, &c.payloadHandler.rawOpt, cf, on)
+}
+
+// SetDeadline sets the read and write deadlines associated with the
+// endpoint.
+func (c *PacketConn) SetDeadline(t time.Time) error {
+ if !c.payloadHandler.ok() {
+ return errInvalidConn
+ }
+ return c.payloadHandler.PacketConn.SetDeadline(t)
+}
+
+// SetReadDeadline sets the read deadline associated with the
+// endpoint.
+func (c *PacketConn) SetReadDeadline(t time.Time) error {
+ if !c.payloadHandler.ok() {
+ return errInvalidConn
+ }
+ return c.payloadHandler.PacketConn.SetReadDeadline(t)
+}
+
+// SetWriteDeadline sets the write deadline associated with the
+// endpoint.
+func (c *PacketConn) SetWriteDeadline(t time.Time) error {
+ if !c.payloadHandler.ok() {
+ return errInvalidConn
+ }
+ return c.payloadHandler.PacketConn.SetWriteDeadline(t)
+}
+
+// Close closes the endpoint.
+func (c *PacketConn) Close() error {
+ if !c.payloadHandler.ok() {
+ return errInvalidConn
+ }
+ return c.payloadHandler.PacketConn.Close()
+}
+
+// NewPacketConn returns a new PacketConn using c as its underlying
+// transport.
+func NewPacketConn(c net.PacketConn) *PacketConn {
+ cc, _ := socket.NewConn(c.(net.Conn))
+ p := &PacketConn{
+ genericOpt: genericOpt{Conn: cc},
+ dgramOpt: dgramOpt{Conn: cc},
+ payloadHandler: payloadHandler{PacketConn: c, Conn: cc},
+ }
+ return p
+}
+
+// A RawConn represents a packet network endpoint that uses the IPv4
+// transport. It is used to control several IP-level socket options
+// including IPv4 header manipulation. It also provides datagram
+// based network I/O methods specific to the IPv4 and higher layer
+// protocols that handle IPv4 datagram directly such as OSPF, GRE.
+type RawConn struct {
+ genericOpt
+ dgramOpt
+ packetHandler
+}
+
+// SetControlMessage sets the per packet IP-level socket options.
+func (c *RawConn) SetControlMessage(cf ControlFlags, on bool) error {
+ if !c.packetHandler.ok() {
+ return errInvalidConn
+ }
+ return setControlMessage(c.dgramOpt.Conn, &c.packetHandler.rawOpt, cf, on)
+}
+
+// SetDeadline sets the read and write deadlines associated with the
+// endpoint.
+func (c *RawConn) SetDeadline(t time.Time) error {
+ if !c.packetHandler.ok() {
+ return errInvalidConn
+ }
+ return c.packetHandler.IPConn.SetDeadline(t)
+}
+
+// SetReadDeadline sets the read deadline associated with the
+// endpoint.
+func (c *RawConn) SetReadDeadline(t time.Time) error {
+ if !c.packetHandler.ok() {
+ return errInvalidConn
+ }
+ return c.packetHandler.IPConn.SetReadDeadline(t)
+}
+
+// SetWriteDeadline sets the write deadline associated with the
+// endpoint.
+func (c *RawConn) SetWriteDeadline(t time.Time) error {
+ if !c.packetHandler.ok() {
+ return errInvalidConn
+ }
+ return c.packetHandler.IPConn.SetWriteDeadline(t)
+}
+
+// Close closes the endpoint.
+func (c *RawConn) Close() error {
+ if !c.packetHandler.ok() {
+ return errInvalidConn
+ }
+ return c.packetHandler.IPConn.Close()
+}
+
+// NewRawConn returns a new RawConn using c as its underlying
+// transport.
+func NewRawConn(c net.PacketConn) (*RawConn, error) {
+ cc, err := socket.NewConn(c.(net.Conn))
+ if err != nil {
+ return nil, err
+ }
+ r := &RawConn{
+ genericOpt: genericOpt{Conn: cc},
+ dgramOpt: dgramOpt{Conn: cc},
+ packetHandler: packetHandler{IPConn: c.(*net.IPConn), Conn: cc},
+ }
+ so, ok := sockOpts[ssoHeaderPrepend]
+ if !ok {
+ return nil, errNotImplemented
+ }
+ if err := so.SetInt(r.dgramOpt.Conn, boolint(true)); err != nil {
+ return nil, err
+ }
+ return r, nil
+}
diff --git a/vendor/golang.org/x/net/ipv4/genericopt.go b/vendor/golang.org/x/net/ipv4/genericopt.go
new file mode 100644
index 0000000..51c1237
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/genericopt.go
@@ -0,0 +1,55 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+// TOS returns the type-of-service field value for outgoing packets.
+func (c *genericOpt) TOS() (int, error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ so, ok := sockOpts[ssoTOS]
+ if !ok {
+ return 0, errNotImplemented
+ }
+ return so.GetInt(c.Conn)
+}
+
+// SetTOS sets the type-of-service field value for future outgoing
+// packets.
+func (c *genericOpt) SetTOS(tos int) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoTOS]
+ if !ok {
+ return errNotImplemented
+ }
+ return so.SetInt(c.Conn, tos)
+}
+
+// TTL returns the time-to-live field value for outgoing packets.
+func (c *genericOpt) TTL() (int, error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ so, ok := sockOpts[ssoTTL]
+ if !ok {
+ return 0, errNotImplemented
+ }
+ return so.GetInt(c.Conn)
+}
+
+// SetTTL sets the time-to-live field value for future outgoing
+// packets.
+func (c *genericOpt) SetTTL(ttl int) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoTTL]
+ if !ok {
+ return errNotImplemented
+ }
+ return so.SetInt(c.Conn, ttl)
+}
diff --git a/vendor/golang.org/x/net/ipv4/header.go b/vendor/golang.org/x/net/ipv4/header.go
new file mode 100644
index 0000000..701bd4b
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/header.go
@@ -0,0 +1,173 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "encoding/binary"
+ "fmt"
+ "net"
+ "runtime"
+
+ "golang.org/x/net/internal/socket"
+)
+
+const (
+ Version = 4 // protocol version
+ HeaderLen = 20 // header length without extension headers
+ maxHeaderLen = 60 // sensible default, revisit if later RFCs define new usage of version and header length fields
+)
+
+type HeaderFlags int
+
+const (
+ MoreFragments HeaderFlags = 1 << iota // more fragments flag
+ DontFragment // don't fragment flag
+)
+
+// A Header represents an IPv4 header.
+type Header struct {
+ Version int // protocol version
+ Len int // header length
+ TOS int // type-of-service
+ TotalLen int // packet total length
+ ID int // identification
+ Flags HeaderFlags // flags
+ FragOff int // fragment offset
+ TTL int // time-to-live
+ Protocol int // next protocol
+ Checksum int // checksum
+ Src net.IP // source address
+ Dst net.IP // destination address
+ Options []byte // options, extension headers
+}
+
+func (h *Header) String() string {
+ if h == nil {
+ return ""
+ }
+ return fmt.Sprintf("ver=%d hdrlen=%d tos=%#x totallen=%d id=%#x flags=%#x fragoff=%#x ttl=%d proto=%d cksum=%#x src=%v dst=%v", h.Version, h.Len, h.TOS, h.TotalLen, h.ID, h.Flags, h.FragOff, h.TTL, h.Protocol, h.Checksum, h.Src, h.Dst)
+}
+
+// Marshal returns the binary encoding of h.
+//
+// The returned slice is in the format used by a raw IP socket on the
+// local system.
+// This may differ from the wire format, depending on the system.
+func (h *Header) Marshal() ([]byte, error) {
+ if h == nil {
+ return nil, errNilHeader
+ }
+ if h.Len < HeaderLen {
+ return nil, errHeaderTooShort
+ }
+ hdrlen := HeaderLen + len(h.Options)
+ b := make([]byte, hdrlen)
+ b[0] = byte(Version<<4 | (hdrlen >> 2 & 0x0f))
+ b[1] = byte(h.TOS)
+ flagsAndFragOff := (h.FragOff & 0x1fff) | int(h.Flags<<13)
+ switch runtime.GOOS {
+ case "darwin", "dragonfly", "netbsd":
+ socket.NativeEndian.PutUint16(b[2:4], uint16(h.TotalLen))
+ socket.NativeEndian.PutUint16(b[6:8], uint16(flagsAndFragOff))
+ case "freebsd":
+ if freebsdVersion < 1100000 {
+ socket.NativeEndian.PutUint16(b[2:4], uint16(h.TotalLen))
+ socket.NativeEndian.PutUint16(b[6:8], uint16(flagsAndFragOff))
+ } else {
+ binary.BigEndian.PutUint16(b[2:4], uint16(h.TotalLen))
+ binary.BigEndian.PutUint16(b[6:8], uint16(flagsAndFragOff))
+ }
+ default:
+ binary.BigEndian.PutUint16(b[2:4], uint16(h.TotalLen))
+ binary.BigEndian.PutUint16(b[6:8], uint16(flagsAndFragOff))
+ }
+ binary.BigEndian.PutUint16(b[4:6], uint16(h.ID))
+ b[8] = byte(h.TTL)
+ b[9] = byte(h.Protocol)
+ binary.BigEndian.PutUint16(b[10:12], uint16(h.Checksum))
+ if ip := h.Src.To4(); ip != nil {
+ copy(b[12:16], ip[:net.IPv4len])
+ }
+ if ip := h.Dst.To4(); ip != nil {
+ copy(b[16:20], ip[:net.IPv4len])
+ } else {
+ return nil, errMissingAddress
+ }
+ if len(h.Options) > 0 {
+ copy(b[HeaderLen:], h.Options)
+ }
+ return b, nil
+}
+
+// Parse parses b as an IPv4 header and stores the result in h.
+//
+// The provided b must be in the format used by a raw IP socket on the
+// local system.
+// This may differ from the wire format, depending on the system.
+func (h *Header) Parse(b []byte) error {
+ if h == nil || b == nil {
+ return errNilHeader
+ }
+ if len(b) < HeaderLen {
+ return errHeaderTooShort
+ }
+ hdrlen := int(b[0]&0x0f) << 2
+ if len(b) < hdrlen {
+ return errExtHeaderTooShort
+ }
+ h.Version = int(b[0] >> 4)
+ h.Len = hdrlen
+ h.TOS = int(b[1])
+ h.ID = int(binary.BigEndian.Uint16(b[4:6]))
+ h.TTL = int(b[8])
+ h.Protocol = int(b[9])
+ h.Checksum = int(binary.BigEndian.Uint16(b[10:12]))
+ h.Src = net.IPv4(b[12], b[13], b[14], b[15])
+ h.Dst = net.IPv4(b[16], b[17], b[18], b[19])
+ switch runtime.GOOS {
+ case "darwin", "dragonfly", "netbsd":
+ h.TotalLen = int(socket.NativeEndian.Uint16(b[2:4])) + hdrlen
+ h.FragOff = int(socket.NativeEndian.Uint16(b[6:8]))
+ case "freebsd":
+ if freebsdVersion < 1100000 {
+ h.TotalLen = int(socket.NativeEndian.Uint16(b[2:4]))
+ if freebsdVersion < 1000000 {
+ h.TotalLen += hdrlen
+ }
+ h.FragOff = int(socket.NativeEndian.Uint16(b[6:8]))
+ } else {
+ h.TotalLen = int(binary.BigEndian.Uint16(b[2:4]))
+ h.FragOff = int(binary.BigEndian.Uint16(b[6:8]))
+ }
+ default:
+ h.TotalLen = int(binary.BigEndian.Uint16(b[2:4]))
+ h.FragOff = int(binary.BigEndian.Uint16(b[6:8]))
+ }
+ h.Flags = HeaderFlags(h.FragOff&0xe000) >> 13
+ h.FragOff = h.FragOff & 0x1fff
+ optlen := hdrlen - HeaderLen
+ if optlen > 0 && len(b) >= hdrlen {
+ if cap(h.Options) < optlen {
+ h.Options = make([]byte, optlen)
+ } else {
+ h.Options = h.Options[:optlen]
+ }
+ copy(h.Options, b[HeaderLen:hdrlen])
+ }
+ return nil
+}
+
+// ParseHeader parses b as an IPv4 header.
+//
+// The provided b must be in the format used by a raw IP socket on the
+// local system.
+// This may differ from the wire format, depending on the system.
+func ParseHeader(b []byte) (*Header, error) {
+ h := new(Header)
+ if err := h.Parse(b); err != nil {
+ return nil, err
+ }
+ return h, nil
+}
diff --git a/vendor/golang.org/x/net/ipv4/helper.go b/vendor/golang.org/x/net/ipv4/helper.go
new file mode 100644
index 0000000..b494a2c
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/helper.go
@@ -0,0 +1,80 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "errors"
+ "net"
+ "runtime"
+
+ "golang.org/x/net/internal/socket"
+)
+
+var (
+ errInvalidConn = errors.New("invalid connection")
+ errMissingAddress = errors.New("missing address")
+ errMissingHeader = errors.New("missing header")
+ errNilHeader = errors.New("nil header")
+ errHeaderTooShort = errors.New("header too short")
+ errExtHeaderTooShort = errors.New("extension header too short")
+ errInvalidConnType = errors.New("invalid conn type")
+ errNoSuchInterface = errors.New("no such interface")
+ errNoSuchMulticastInterface = errors.New("no such multicast interface")
+ errNotImplemented = errors.New("not implemented on " + runtime.GOOS + "/" + runtime.GOARCH)
+
+ // See https://www.freebsd.org/doc/en/books/porters-handbook/versions.html.
+ freebsdVersion uint32
+ compatFreeBSD32 bool // 386 emulation on amd64
+)
+
+// See golang.org/issue/30899.
+func adjustFreeBSD32(m *socket.Message) {
+ // FreeBSD 12.0-RELEASE is affected by https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236737
+ if 1200086 <= freebsdVersion && freebsdVersion < 1201000 {
+ l := (m.NN + 4 - 1) &^ (4 - 1)
+ if m.NN < l && l <= len(m.OOB) {
+ m.NN = l
+ }
+ }
+}
+
+func boolint(b bool) int {
+ if b {
+ return 1
+ }
+ return 0
+}
+
+func netAddrToIP4(a net.Addr) net.IP {
+ switch v := a.(type) {
+ case *net.UDPAddr:
+ if ip := v.IP.To4(); ip != nil {
+ return ip
+ }
+ case *net.IPAddr:
+ if ip := v.IP.To4(); ip != nil {
+ return ip
+ }
+ }
+ return nil
+}
+
+func opAddr(a net.Addr) net.Addr {
+ switch a.(type) {
+ case *net.TCPAddr:
+ if a == nil {
+ return nil
+ }
+ case *net.UDPAddr:
+ if a == nil {
+ return nil
+ }
+ case *net.IPAddr:
+ if a == nil {
+ return nil
+ }
+ }
+ return a
+}
diff --git a/vendor/golang.org/x/net/ipv4/iana.go b/vendor/golang.org/x/net/ipv4/iana.go
new file mode 100644
index 0000000..4375b40
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/iana.go
@@ -0,0 +1,38 @@
+// go generate gen.go
+// Code generated by the command above; DO NOT EDIT.
+
+package ipv4
+
+// Internet Control Message Protocol (ICMP) Parameters, Updated: 2018-02-26
+const (
+ ICMPTypeEchoReply ICMPType = 0 // Echo Reply
+ ICMPTypeDestinationUnreachable ICMPType = 3 // Destination Unreachable
+ ICMPTypeRedirect ICMPType = 5 // Redirect
+ ICMPTypeEcho ICMPType = 8 // Echo
+ ICMPTypeRouterAdvertisement ICMPType = 9 // Router Advertisement
+ ICMPTypeRouterSolicitation ICMPType = 10 // Router Solicitation
+ ICMPTypeTimeExceeded ICMPType = 11 // Time Exceeded
+ ICMPTypeParameterProblem ICMPType = 12 // Parameter Problem
+ ICMPTypeTimestamp ICMPType = 13 // Timestamp
+ ICMPTypeTimestampReply ICMPType = 14 // Timestamp Reply
+ ICMPTypePhoturis ICMPType = 40 // Photuris
+ ICMPTypeExtendedEchoRequest ICMPType = 42 // Extended Echo Request
+ ICMPTypeExtendedEchoReply ICMPType = 43 // Extended Echo Reply
+)
+
+// Internet Control Message Protocol (ICMP) Parameters, Updated: 2018-02-26
+var icmpTypes = map[ICMPType]string{
+ 0: "echo reply",
+ 3: "destination unreachable",
+ 5: "redirect",
+ 8: "echo",
+ 9: "router advertisement",
+ 10: "router solicitation",
+ 11: "time exceeded",
+ 12: "parameter problem",
+ 13: "timestamp",
+ 14: "timestamp reply",
+ 40: "photuris",
+ 42: "extended echo request",
+ 43: "extended echo reply",
+}
diff --git a/vendor/golang.org/x/net/ipv4/icmp.go b/vendor/golang.org/x/net/ipv4/icmp.go
new file mode 100644
index 0000000..9902bb3
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/icmp.go
@@ -0,0 +1,57 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import "golang.org/x/net/internal/iana"
+
+// An ICMPType represents a type of ICMP message.
+type ICMPType int
+
+func (typ ICMPType) String() string {
+ s, ok := icmpTypes[typ]
+ if !ok {
+ return ""
+ }
+ return s
+}
+
+// Protocol returns the ICMPv4 protocol number.
+func (typ ICMPType) Protocol() int {
+ return iana.ProtocolICMP
+}
+
+// An ICMPFilter represents an ICMP message filter for incoming
+// packets. The filter belongs to a packet delivery path on a host and
+// it cannot interact with forwarding packets or tunnel-outer packets.
+//
+// Note: RFC 8200 defines a reasonable role model and it works not
+// only for IPv6 but IPv4. A node means a device that implements IP.
+// A router means a node that forwards IP packets not explicitly
+// addressed to itself, and a host means a node that is not a router.
+type ICMPFilter struct {
+ icmpFilter
+}
+
+// Accept accepts incoming ICMP packets including the type field value
+// typ.
+func (f *ICMPFilter) Accept(typ ICMPType) {
+ f.accept(typ)
+}
+
+// Block blocks incoming ICMP packets including the type field value
+// typ.
+func (f *ICMPFilter) Block(typ ICMPType) {
+ f.block(typ)
+}
+
+// SetAll sets the filter action to the filter.
+func (f *ICMPFilter) SetAll(block bool) {
+ f.setAll(block)
+}
+
+// WillBlock reports whether the ICMP type will be blocked.
+func (f *ICMPFilter) WillBlock(typ ICMPType) bool {
+ return f.willBlock(typ)
+}
diff --git a/vendor/golang.org/x/net/ipv4/icmp_linux.go b/vendor/golang.org/x/net/ipv4/icmp_linux.go
new file mode 100644
index 0000000..6e1c5c8
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/icmp_linux.go
@@ -0,0 +1,25 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+func (f *icmpFilter) accept(typ ICMPType) {
+ f.Data &^= 1 << (uint32(typ) & 31)
+}
+
+func (f *icmpFilter) block(typ ICMPType) {
+ f.Data |= 1 << (uint32(typ) & 31)
+}
+
+func (f *icmpFilter) setAll(block bool) {
+ if block {
+ f.Data = 1<<32 - 1
+ } else {
+ f.Data = 0
+ }
+}
+
+func (f *icmpFilter) willBlock(typ ICMPType) bool {
+ return f.Data&(1<<(uint32(typ)&31)) != 0
+}
diff --git a/vendor/golang.org/x/net/ipv4/icmp_stub.go b/vendor/golang.org/x/net/ipv4/icmp_stub.go
new file mode 100644
index 0000000..21bb29a
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/icmp_stub.go
@@ -0,0 +1,25 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !linux
+
+package ipv4
+
+const sizeofICMPFilter = 0x0
+
+type icmpFilter struct {
+}
+
+func (f *icmpFilter) accept(typ ICMPType) {
+}
+
+func (f *icmpFilter) block(typ ICMPType) {
+}
+
+func (f *icmpFilter) setAll(block bool) {
+}
+
+func (f *icmpFilter) willBlock(typ ICMPType) bool {
+ return false
+}
diff --git a/vendor/golang.org/x/net/ipv4/packet.go b/vendor/golang.org/x/net/ipv4/packet.go
new file mode 100644
index 0000000..7d784e0
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/packet.go
@@ -0,0 +1,117 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "net"
+
+ "golang.org/x/net/internal/socket"
+)
+
+// BUG(mikio): On Windows, the ReadFrom and WriteTo methods of RawConn
+// are not implemented.
+
+// A packetHandler represents the IPv4 datagram handler.
+type packetHandler struct {
+ *net.IPConn
+ *socket.Conn
+ rawOpt
+}
+
+func (c *packetHandler) ok() bool { return c != nil && c.IPConn != nil && c.Conn != nil }
+
+// ReadFrom reads an IPv4 datagram from the endpoint c, copying the
+// datagram into b. It returns the received datagram as the IPv4
+// header h, the payload p and the control message cm.
+func (c *packetHandler) ReadFrom(b []byte) (h *Header, p []byte, cm *ControlMessage, err error) {
+ if !c.ok() {
+ return nil, nil, nil, errInvalidConn
+ }
+ c.rawOpt.RLock()
+ m := socket.Message{
+ Buffers: [][]byte{b},
+ OOB: NewControlMessage(c.rawOpt.cflags),
+ }
+ c.rawOpt.RUnlock()
+ if err := c.RecvMsg(&m, 0); err != nil {
+ return nil, nil, nil, &net.OpError{Op: "read", Net: c.IPConn.LocalAddr().Network(), Source: c.IPConn.LocalAddr(), Err: err}
+ }
+ var hs []byte
+ if hs, p, err = slicePacket(b[:m.N]); err != nil {
+ return nil, nil, nil, &net.OpError{Op: "read", Net: c.IPConn.LocalAddr().Network(), Source: c.IPConn.LocalAddr(), Err: err}
+ }
+ if h, err = ParseHeader(hs); err != nil {
+ return nil, nil, nil, &net.OpError{Op: "read", Net: c.IPConn.LocalAddr().Network(), Source: c.IPConn.LocalAddr(), Err: err}
+ }
+ if m.NN > 0 {
+ if compatFreeBSD32 {
+ adjustFreeBSD32(&m)
+ }
+ cm = new(ControlMessage)
+ if err := cm.Parse(m.OOB[:m.NN]); err != nil {
+ return nil, nil, nil, &net.OpError{Op: "read", Net: c.IPConn.LocalAddr().Network(), Source: c.IPConn.LocalAddr(), Err: err}
+ }
+ }
+ if src, ok := m.Addr.(*net.IPAddr); ok && cm != nil {
+ cm.Src = src.IP
+ }
+ return
+}
+
+func slicePacket(b []byte) (h, p []byte, err error) {
+ if len(b) < HeaderLen {
+ return nil, nil, errHeaderTooShort
+ }
+ hdrlen := int(b[0]&0x0f) << 2
+ return b[:hdrlen], b[hdrlen:], nil
+}
+
+// WriteTo writes an IPv4 datagram through the endpoint c, copying the
+// datagram from the IPv4 header h and the payload p. The control
+// message cm allows the datagram path and the outgoing interface to be
+// specified. Currently only Darwin and Linux support this. The cm
+// may be nil if control of the outgoing datagram is not required.
+//
+// The IPv4 header h must contain appropriate fields that include:
+//
+// Version =
+// Len =
+// TOS =
+// TotalLen =
+// ID = platform sets an appropriate value if ID is zero
+// FragOff =
+// TTL =
+// Protocol =
+// Checksum = platform sets an appropriate value if Checksum is zero
+// Src = platform sets an appropriate value if Src is nil
+// Dst =
+// Options = optional
+func (c *packetHandler) WriteTo(h *Header, p []byte, cm *ControlMessage) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ m := socket.Message{
+ OOB: cm.Marshal(),
+ }
+ wh, err := h.Marshal()
+ if err != nil {
+ return err
+ }
+ m.Buffers = [][]byte{wh, p}
+ dst := new(net.IPAddr)
+ if cm != nil {
+ if ip := cm.Dst.To4(); ip != nil {
+ dst.IP = ip
+ }
+ }
+ if dst.IP == nil {
+ dst.IP = h.Dst
+ }
+ m.Addr = dst
+ if err := c.SendMsg(&m, 0); err != nil {
+ return &net.OpError{Op: "write", Net: c.IPConn.LocalAddr().Network(), Source: c.IPConn.LocalAddr(), Addr: opAddr(dst), Err: err}
+ }
+ return nil
+}
diff --git a/vendor/golang.org/x/net/ipv4/payload.go b/vendor/golang.org/x/net/ipv4/payload.go
new file mode 100644
index 0000000..f95f811
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/payload.go
@@ -0,0 +1,23 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "net"
+
+ "golang.org/x/net/internal/socket"
+)
+
+// BUG(mikio): On Windows, the ControlMessage for ReadFrom and WriteTo
+// methods of PacketConn is not implemented.
+
+// A payloadHandler represents the IPv4 datagram payload handler.
+type payloadHandler struct {
+ net.PacketConn
+ *socket.Conn
+ rawOpt
+}
+
+func (c *payloadHandler) ok() bool { return c != nil && c.PacketConn != nil && c.Conn != nil }
diff --git a/vendor/golang.org/x/net/ipv4/payload_cmsg.go b/vendor/golang.org/x/net/ipv4/payload_cmsg.go
new file mode 100644
index 0000000..e761466
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/payload_cmsg.go
@@ -0,0 +1,84 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package ipv4
+
+import (
+ "net"
+
+ "golang.org/x/net/internal/socket"
+)
+
+// ReadFrom reads a payload of the received IPv4 datagram, from the
+// endpoint c, copying the payload into b. It returns the number of
+// bytes copied into b, the control message cm and the source address
+// src of the received datagram.
+func (c *payloadHandler) ReadFrom(b []byte) (n int, cm *ControlMessage, src net.Addr, err error) {
+ if !c.ok() {
+ return 0, nil, nil, errInvalidConn
+ }
+ c.rawOpt.RLock()
+ m := socket.Message{
+ OOB: NewControlMessage(c.rawOpt.cflags),
+ }
+ c.rawOpt.RUnlock()
+ switch c.PacketConn.(type) {
+ case *net.UDPConn:
+ m.Buffers = [][]byte{b}
+ if err := c.RecvMsg(&m, 0); err != nil {
+ return 0, nil, nil, &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
+ }
+ case *net.IPConn:
+ h := make([]byte, HeaderLen)
+ m.Buffers = [][]byte{h, b}
+ if err := c.RecvMsg(&m, 0); err != nil {
+ return 0, nil, nil, &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
+ }
+ hdrlen := int(h[0]&0x0f) << 2
+ if hdrlen > len(h) {
+ d := hdrlen - len(h)
+ copy(b, b[d:])
+ m.N -= d
+ } else {
+ m.N -= hdrlen
+ }
+ default:
+ return 0, nil, nil, &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: errInvalidConnType}
+ }
+ if m.NN > 0 {
+ if compatFreeBSD32 {
+ adjustFreeBSD32(&m)
+ }
+ cm = new(ControlMessage)
+ if err := cm.Parse(m.OOB[:m.NN]); err != nil {
+ return 0, nil, nil, &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
+ }
+ cm.Src = netAddrToIP4(m.Addr)
+ }
+ return m.N, cm, m.Addr, nil
+}
+
+// WriteTo writes a payload of the IPv4 datagram, to the destination
+// address dst through the endpoint c, copying the payload from b. It
+// returns the number of bytes written. The control message cm allows
+// the datagram path and the outgoing interface to be specified.
+// Currently only Darwin and Linux support this. The cm may be nil if
+// control of the outgoing datagram is not required.
+func (c *payloadHandler) WriteTo(b []byte, cm *ControlMessage, dst net.Addr) (n int, err error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ m := socket.Message{
+ Buffers: [][]byte{b},
+ OOB: cm.Marshal(),
+ Addr: dst,
+ }
+ err = c.SendMsg(&m, 0)
+ if err != nil {
+ err = &net.OpError{Op: "write", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Addr: opAddr(dst), Err: err}
+ }
+ return m.N, err
+}
diff --git a/vendor/golang.org/x/net/ipv4/payload_nocmsg.go b/vendor/golang.org/x/net/ipv4/payload_nocmsg.go
new file mode 100644
index 0000000..1116256
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/payload_nocmsg.go
@@ -0,0 +1,39 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris
+
+package ipv4
+
+import "net"
+
+// ReadFrom reads a payload of the received IPv4 datagram, from the
+// endpoint c, copying the payload into b. It returns the number of
+// bytes copied into b, the control message cm and the source address
+// src of the received datagram.
+func (c *payloadHandler) ReadFrom(b []byte) (n int, cm *ControlMessage, src net.Addr, err error) {
+ if !c.ok() {
+ return 0, nil, nil, errInvalidConn
+ }
+ if n, src, err = c.PacketConn.ReadFrom(b); err != nil {
+ return 0, nil, nil, err
+ }
+ return
+}
+
+// WriteTo writes a payload of the IPv4 datagram, to the destination
+// address dst through the endpoint c, copying the payload from b. It
+// returns the number of bytes written. The control message cm allows
+// the datagram path and the outgoing interface to be specified.
+// Currently only Darwin and Linux support this. The cm may be nil if
+// control of the outgoing datagram is not required.
+func (c *payloadHandler) WriteTo(b []byte, cm *ControlMessage, dst net.Addr) (n int, err error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ if dst == nil {
+ return 0, errMissingAddress
+ }
+ return c.PacketConn.WriteTo(b, dst)
+}
diff --git a/vendor/golang.org/x/net/ipv4/sockopt.go b/vendor/golang.org/x/net/ipv4/sockopt.go
new file mode 100644
index 0000000..22e90c0
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sockopt.go
@@ -0,0 +1,44 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import "golang.org/x/net/internal/socket"
+
+// Sticky socket options
+const (
+ ssoTOS = iota // header field for unicast packet
+ ssoTTL // header field for unicast packet
+ ssoMulticastTTL // header field for multicast packet
+ ssoMulticastInterface // outbound interface for multicast packet
+ ssoMulticastLoopback // loopback for multicast packet
+ ssoReceiveTTL // header field on received packet
+ ssoReceiveDst // header field on received packet
+ ssoReceiveInterface // inbound interface on received packet
+ ssoPacketInfo // incbound or outbound packet path
+ ssoHeaderPrepend // ipv4 header prepend
+ ssoStripHeader // strip ipv4 header
+ ssoICMPFilter // icmp filter
+ ssoJoinGroup // any-source multicast
+ ssoLeaveGroup // any-source multicast
+ ssoJoinSourceGroup // source-specific multicast
+ ssoLeaveSourceGroup // source-specific multicast
+ ssoBlockSourceGroup // any-source or source-specific multicast
+ ssoUnblockSourceGroup // any-source or source-specific multicast
+ ssoAttachFilter // attach BPF for filtering inbound traffic
+)
+
+// Sticky socket option value types
+const (
+ ssoTypeIPMreq = iota + 1
+ ssoTypeIPMreqn
+ ssoTypeGroupReq
+ ssoTypeGroupSourceReq
+)
+
+// A sockOpt represents a binding for sticky socket option.
+type sockOpt struct {
+ socket.Option
+ typ int // hint for option value type; optional
+}
diff --git a/vendor/golang.org/x/net/ipv4/sockopt_posix.go b/vendor/golang.org/x/net/ipv4/sockopt_posix.go
new file mode 100644
index 0000000..dea6451
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sockopt_posix.go
@@ -0,0 +1,71 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris windows
+
+package ipv4
+
+import (
+ "net"
+ "unsafe"
+
+ "golang.org/x/net/bpf"
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) getMulticastInterface(c *socket.Conn) (*net.Interface, error) {
+ switch so.typ {
+ case ssoTypeIPMreqn:
+ return so.getIPMreqn(c)
+ default:
+ return so.getMulticastIf(c)
+ }
+}
+
+func (so *sockOpt) setMulticastInterface(c *socket.Conn, ifi *net.Interface) error {
+ switch so.typ {
+ case ssoTypeIPMreqn:
+ return so.setIPMreqn(c, ifi, nil)
+ default:
+ return so.setMulticastIf(c, ifi)
+ }
+}
+
+func (so *sockOpt) getICMPFilter(c *socket.Conn) (*ICMPFilter, error) {
+ b := make([]byte, so.Len)
+ n, err := so.Get(c, b)
+ if err != nil {
+ return nil, err
+ }
+ if n != sizeofICMPFilter {
+ return nil, errNotImplemented
+ }
+ return (*ICMPFilter)(unsafe.Pointer(&b[0])), nil
+}
+
+func (so *sockOpt) setICMPFilter(c *socket.Conn, f *ICMPFilter) error {
+ b := (*[sizeofICMPFilter]byte)(unsafe.Pointer(f))[:sizeofICMPFilter]
+ return so.Set(c, b)
+}
+
+func (so *sockOpt) setGroup(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
+ switch so.typ {
+ case ssoTypeIPMreq:
+ return so.setIPMreq(c, ifi, grp)
+ case ssoTypeIPMreqn:
+ return so.setIPMreqn(c, ifi, grp)
+ case ssoTypeGroupReq:
+ return so.setGroupReq(c, ifi, grp)
+ default:
+ return errNotImplemented
+ }
+}
+
+func (so *sockOpt) setSourceGroup(c *socket.Conn, ifi *net.Interface, grp, src net.IP) error {
+ return so.setGroupSourceReq(c, ifi, grp, src)
+}
+
+func (so *sockOpt) setBPF(c *socket.Conn, f []bpf.RawInstruction) error {
+ return so.setAttachFilter(c, f)
+}
diff --git a/vendor/golang.org/x/net/ipv4/sockopt_stub.go b/vendor/golang.org/x/net/ipv4/sockopt_stub.go
new file mode 100644
index 0000000..37d4806
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sockopt_stub.go
@@ -0,0 +1,42 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+
+package ipv4
+
+import (
+ "net"
+
+ "golang.org/x/net/bpf"
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) getMulticastInterface(c *socket.Conn) (*net.Interface, error) {
+ return nil, errNotImplemented
+}
+
+func (so *sockOpt) setMulticastInterface(c *socket.Conn, ifi *net.Interface) error {
+ return errNotImplemented
+}
+
+func (so *sockOpt) getICMPFilter(c *socket.Conn) (*ICMPFilter, error) {
+ return nil, errNotImplemented
+}
+
+func (so *sockOpt) setICMPFilter(c *socket.Conn, f *ICMPFilter) error {
+ return errNotImplemented
+}
+
+func (so *sockOpt) setGroup(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
+ return errNotImplemented
+}
+
+func (so *sockOpt) setSourceGroup(c *socket.Conn, ifi *net.Interface, grp, src net.IP) error {
+ return errNotImplemented
+}
+
+func (so *sockOpt) setBPF(c *socket.Conn, f []bpf.RawInstruction) error {
+ return errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/ipv4/sys_aix.go b/vendor/golang.org/x/net/ipv4/sys_aix.go
new file mode 100644
index 0000000..3d1201e
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_aix.go
@@ -0,0 +1,38 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Added for go1.11 compatibility
+// +build aix
+
+package ipv4
+
+import (
+ "net"
+ "syscall"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{
+ ctlTTL: {sysIP_RECVTTL, 1, marshalTTL, parseTTL},
+ ctlDst: {sysIP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
+ ctlInterface: {sysIP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
+ }
+
+ sockOpts = map[int]*sockOpt{
+ ssoTOS: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TOS, Len: 4}},
+ ssoTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TTL, Len: 4}},
+ ssoMulticastTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_TTL, Len: 1}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_IF, Len: 4}},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_LOOP, Len: 1}},
+ ssoReceiveTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVTTL, Len: 4}},
+ ssoReceiveDst: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVDSTADDR, Len: 4}},
+ ssoReceiveInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVIF, Len: 4}},
+ ssoHeaderPrepend: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_HDRINCL, Len: 4}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_ADD_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_DROP_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
+ }
+)
diff --git a/vendor/golang.org/x/net/ipv4/sys_asmreq.go b/vendor/golang.org/x/net/ipv4/sys_asmreq.go
new file mode 100644
index 0000000..c5eaafe
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_asmreq.go
@@ -0,0 +1,119 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd netbsd openbsd solaris windows
+
+package ipv4
+
+import (
+ "net"
+ "unsafe"
+
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) setIPMreq(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
+ mreq := ipMreq{Multiaddr: [4]byte{grp[0], grp[1], grp[2], grp[3]}}
+ if err := setIPMreqInterface(&mreq, ifi); err != nil {
+ return err
+ }
+ b := (*[sizeofIPMreq]byte)(unsafe.Pointer(&mreq))[:sizeofIPMreq]
+ return so.Set(c, b)
+}
+
+func (so *sockOpt) getMulticastIf(c *socket.Conn) (*net.Interface, error) {
+ var b [4]byte
+ if _, err := so.Get(c, b[:]); err != nil {
+ return nil, err
+ }
+ ifi, err := netIP4ToInterface(net.IPv4(b[0], b[1], b[2], b[3]))
+ if err != nil {
+ return nil, err
+ }
+ return ifi, nil
+}
+
+func (so *sockOpt) setMulticastIf(c *socket.Conn, ifi *net.Interface) error {
+ ip, err := netInterfaceToIP4(ifi)
+ if err != nil {
+ return err
+ }
+ var b [4]byte
+ copy(b[:], ip)
+ return so.Set(c, b[:])
+}
+
+func setIPMreqInterface(mreq *ipMreq, ifi *net.Interface) error {
+ if ifi == nil {
+ return nil
+ }
+ ifat, err := ifi.Addrs()
+ if err != nil {
+ return err
+ }
+ for _, ifa := range ifat {
+ switch ifa := ifa.(type) {
+ case *net.IPAddr:
+ if ip := ifa.IP.To4(); ip != nil {
+ copy(mreq.Interface[:], ip)
+ return nil
+ }
+ case *net.IPNet:
+ if ip := ifa.IP.To4(); ip != nil {
+ copy(mreq.Interface[:], ip)
+ return nil
+ }
+ }
+ }
+ return errNoSuchInterface
+}
+
+func netIP4ToInterface(ip net.IP) (*net.Interface, error) {
+ ift, err := net.Interfaces()
+ if err != nil {
+ return nil, err
+ }
+ for _, ifi := range ift {
+ ifat, err := ifi.Addrs()
+ if err != nil {
+ return nil, err
+ }
+ for _, ifa := range ifat {
+ switch ifa := ifa.(type) {
+ case *net.IPAddr:
+ if ip.Equal(ifa.IP) {
+ return &ifi, nil
+ }
+ case *net.IPNet:
+ if ip.Equal(ifa.IP) {
+ return &ifi, nil
+ }
+ }
+ }
+ }
+ return nil, errNoSuchInterface
+}
+
+func netInterfaceToIP4(ifi *net.Interface) (net.IP, error) {
+ if ifi == nil {
+ return net.IPv4zero.To4(), nil
+ }
+ ifat, err := ifi.Addrs()
+ if err != nil {
+ return nil, err
+ }
+ for _, ifa := range ifat {
+ switch ifa := ifa.(type) {
+ case *net.IPAddr:
+ if ip := ifa.IP.To4(); ip != nil {
+ return ip, nil
+ }
+ case *net.IPNet:
+ if ip := ifa.IP.To4(); ip != nil {
+ return ip, nil
+ }
+ }
+ }
+ return nil, errNoSuchInterface
+}
diff --git a/vendor/golang.org/x/net/ipv4/sys_asmreq_stub.go b/vendor/golang.org/x/net/ipv4/sys_asmreq_stub.go
new file mode 100644
index 0000000..6dc339c
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_asmreq_stub.go
@@ -0,0 +1,25 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!netbsd,!openbsd,!solaris,!windows
+
+package ipv4
+
+import (
+ "net"
+
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) setIPMreq(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
+ return errNotImplemented
+}
+
+func (so *sockOpt) getMulticastIf(c *socket.Conn) (*net.Interface, error) {
+ return nil, errNotImplemented
+}
+
+func (so *sockOpt) setMulticastIf(c *socket.Conn, ifi *net.Interface) error {
+ return errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/ipv4/sys_asmreqn.go b/vendor/golang.org/x/net/ipv4/sys_asmreqn.go
new file mode 100644
index 0000000..1f24f69
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_asmreqn.go
@@ -0,0 +1,42 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin freebsd linux
+
+package ipv4
+
+import (
+ "net"
+ "unsafe"
+
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) getIPMreqn(c *socket.Conn) (*net.Interface, error) {
+ b := make([]byte, so.Len)
+ if _, err := so.Get(c, b); err != nil {
+ return nil, err
+ }
+ mreqn := (*ipMreqn)(unsafe.Pointer(&b[0]))
+ if mreqn.Ifindex == 0 {
+ return nil, nil
+ }
+ ifi, err := net.InterfaceByIndex(int(mreqn.Ifindex))
+ if err != nil {
+ return nil, err
+ }
+ return ifi, nil
+}
+
+func (so *sockOpt) setIPMreqn(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
+ var mreqn ipMreqn
+ if ifi != nil {
+ mreqn.Ifindex = int32(ifi.Index)
+ }
+ if grp != nil {
+ mreqn.Multiaddr = [4]byte{grp[0], grp[1], grp[2], grp[3]}
+ }
+ b := (*[sizeofIPMreqn]byte)(unsafe.Pointer(&mreqn))[:sizeofIPMreqn]
+ return so.Set(c, b)
+}
diff --git a/vendor/golang.org/x/net/ipv4/sys_asmreqn_stub.go b/vendor/golang.org/x/net/ipv4/sys_asmreqn_stub.go
new file mode 100644
index 0000000..48ef556
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_asmreqn_stub.go
@@ -0,0 +1,21 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !darwin,!freebsd,!linux
+
+package ipv4
+
+import (
+ "net"
+
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) getIPMreqn(c *socket.Conn) (*net.Interface, error) {
+ return nil, errNotImplemented
+}
+
+func (so *sockOpt) setIPMreqn(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
+ return errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/ipv4/sys_bpf.go b/vendor/golang.org/x/net/ipv4/sys_bpf.go
new file mode 100644
index 0000000..9f30b73
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_bpf.go
@@ -0,0 +1,23 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux
+
+package ipv4
+
+import (
+ "unsafe"
+
+ "golang.org/x/net/bpf"
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) setAttachFilter(c *socket.Conn, f []bpf.RawInstruction) error {
+ prog := sockFProg{
+ Len: uint16(len(f)),
+ Filter: (*sockFilter)(unsafe.Pointer(&f[0])),
+ }
+ b := (*[sizeofSockFprog]byte)(unsafe.Pointer(&prog))[:sizeofSockFprog]
+ return so.Set(c, b)
+}
diff --git a/vendor/golang.org/x/net/ipv4/sys_bpf_stub.go b/vendor/golang.org/x/net/ipv4/sys_bpf_stub.go
new file mode 100644
index 0000000..5c98642
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_bpf_stub.go
@@ -0,0 +1,16 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !linux
+
+package ipv4
+
+import (
+ "golang.org/x/net/bpf"
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) setAttachFilter(c *socket.Conn, f []bpf.RawInstruction) error {
+ return errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/ipv4/sys_bsd.go b/vendor/golang.org/x/net/ipv4/sys_bsd.go
new file mode 100644
index 0000000..58256dd
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_bsd.go
@@ -0,0 +1,37 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build netbsd openbsd
+
+package ipv4
+
+import (
+ "net"
+ "syscall"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{
+ ctlTTL: {sysIP_RECVTTL, 1, marshalTTL, parseTTL},
+ ctlDst: {sysIP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
+ ctlInterface: {sysIP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
+ }
+
+ sockOpts = map[int]*sockOpt{
+ ssoTOS: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TOS, Len: 4}},
+ ssoTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TTL, Len: 4}},
+ ssoMulticastTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_TTL, Len: 1}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_IF, Len: 4}},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_LOOP, Len: 1}},
+ ssoReceiveTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVTTL, Len: 4}},
+ ssoReceiveDst: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVDSTADDR, Len: 4}},
+ ssoReceiveInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVIF, Len: 4}},
+ ssoHeaderPrepend: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_HDRINCL, Len: 4}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_ADD_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_DROP_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
+ }
+)
diff --git a/vendor/golang.org/x/net/ipv4/sys_darwin.go b/vendor/golang.org/x/net/ipv4/sys_darwin.go
new file mode 100644
index 0000000..ac213c7
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_darwin.go
@@ -0,0 +1,65 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "net"
+ "syscall"
+ "unsafe"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{
+ ctlTTL: {sysIP_RECVTTL, 1, marshalTTL, parseTTL},
+ ctlDst: {sysIP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
+ ctlInterface: {sysIP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
+ ctlPacketInfo: {sysIP_PKTINFO, sizeofInetPktinfo, marshalPacketInfo, parsePacketInfo},
+ }
+
+ sockOpts = map[int]*sockOpt{
+ ssoTOS: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TOS, Len: 4}},
+ ssoTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TTL, Len: 4}},
+ ssoMulticastTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_TTL, Len: 1}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_IF, Len: sizeofIPMreqn}, typ: ssoTypeIPMreqn},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_LOOP, Len: 4}},
+ ssoReceiveTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVTTL, Len: 4}},
+ ssoReceiveDst: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVDSTADDR, Len: 4}},
+ ssoReceiveInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVIF, Len: 4}},
+ ssoHeaderPrepend: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_HDRINCL, Len: 4}},
+ ssoStripHeader: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_STRIPHDR, Len: 4}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_JOIN_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_LEAVE_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoJoinSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_JOIN_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoLeaveSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_LEAVE_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoBlockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_BLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoUnblockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_UNBLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoPacketInfo: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVPKTINFO, Len: 4}},
+ }
+)
+
+func (pi *inetPktinfo) setIfindex(i int) {
+ pi.Ifindex = uint32(i)
+}
+
+func (gr *groupReq) setGroup(grp net.IP) {
+ sa := (*sockaddrInet)(unsafe.Pointer(uintptr(unsafe.Pointer(gr)) + 4))
+ sa.Len = sizeofSockaddrInet
+ sa.Family = syscall.AF_INET
+ copy(sa.Addr[:], grp)
+}
+
+func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
+ sa := (*sockaddrInet)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 4))
+ sa.Len = sizeofSockaddrInet
+ sa.Family = syscall.AF_INET
+ copy(sa.Addr[:], grp)
+ sa = (*sockaddrInet)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 132))
+ sa.Len = sizeofSockaddrInet
+ sa.Family = syscall.AF_INET
+ copy(sa.Addr[:], src)
+}
diff --git a/vendor/golang.org/x/net/ipv4/sys_dragonfly.go b/vendor/golang.org/x/net/ipv4/sys_dragonfly.go
new file mode 100644
index 0000000..859764f
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_dragonfly.go
@@ -0,0 +1,35 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "net"
+ "syscall"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{
+ ctlTTL: {sysIP_RECVTTL, 1, marshalTTL, parseTTL},
+ ctlDst: {sysIP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
+ ctlInterface: {sysIP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
+ }
+
+ sockOpts = map[int]*sockOpt{
+ ssoTOS: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TOS, Len: 4}},
+ ssoTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TTL, Len: 4}},
+ ssoMulticastTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_TTL, Len: 1}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_IF, Len: 4}},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_LOOP, Len: 4}},
+ ssoReceiveTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVTTL, Len: 4}},
+ ssoReceiveDst: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVDSTADDR, Len: 4}},
+ ssoReceiveInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVIF, Len: 4}},
+ ssoHeaderPrepend: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_HDRINCL, Len: 4}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_ADD_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_DROP_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
+ }
+)
diff --git a/vendor/golang.org/x/net/ipv4/sys_freebsd.go b/vendor/golang.org/x/net/ipv4/sys_freebsd.go
new file mode 100644
index 0000000..482873d
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_freebsd.go
@@ -0,0 +1,76 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "net"
+ "runtime"
+ "strings"
+ "syscall"
+ "unsafe"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{
+ ctlTTL: {sysIP_RECVTTL, 1, marshalTTL, parseTTL},
+ ctlDst: {sysIP_RECVDSTADDR, net.IPv4len, marshalDst, parseDst},
+ ctlInterface: {sysIP_RECVIF, syscall.SizeofSockaddrDatalink, marshalInterface, parseInterface},
+ }
+
+ sockOpts = map[int]*sockOpt{
+ ssoTOS: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TOS, Len: 4}},
+ ssoTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TTL, Len: 4}},
+ ssoMulticastTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_TTL, Len: 1}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_IF, Len: 4}},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_LOOP, Len: 4}},
+ ssoReceiveTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVTTL, Len: 4}},
+ ssoReceiveDst: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVDSTADDR, Len: 4}},
+ ssoReceiveInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVIF, Len: 4}},
+ ssoHeaderPrepend: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_HDRINCL, Len: 4}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_JOIN_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_LEAVE_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoJoinSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_JOIN_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoLeaveSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_LEAVE_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoBlockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_BLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoUnblockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_UNBLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ }
+)
+
+func init() {
+ freebsdVersion, _ = syscall.SysctlUint32("kern.osreldate")
+ if freebsdVersion >= 1000000 {
+ sockOpts[ssoMulticastInterface] = &sockOpt{Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_IF, Len: sizeofIPMreqn}, typ: ssoTypeIPMreqn}
+ }
+ if runtime.GOOS == "freebsd" && runtime.GOARCH == "386" {
+ archs, _ := syscall.Sysctl("kern.supported_archs")
+ for _, s := range strings.Fields(archs) {
+ if s == "amd64" {
+ compatFreeBSD32 = true
+ break
+ }
+ }
+ }
+}
+
+func (gr *groupReq) setGroup(grp net.IP) {
+ sa := (*sockaddrInet)(unsafe.Pointer(&gr.Group))
+ sa.Len = sizeofSockaddrInet
+ sa.Family = syscall.AF_INET
+ copy(sa.Addr[:], grp)
+}
+
+func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
+ sa := (*sockaddrInet)(unsafe.Pointer(&gsr.Group))
+ sa.Len = sizeofSockaddrInet
+ sa.Family = syscall.AF_INET
+ copy(sa.Addr[:], grp)
+ sa = (*sockaddrInet)(unsafe.Pointer(&gsr.Source))
+ sa.Len = sizeofSockaddrInet
+ sa.Family = syscall.AF_INET
+ copy(sa.Addr[:], src)
+}
diff --git a/vendor/golang.org/x/net/ipv4/sys_linux.go b/vendor/golang.org/x/net/ipv4/sys_linux.go
new file mode 100644
index 0000000..60defe1
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_linux.go
@@ -0,0 +1,59 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "net"
+ "syscall"
+ "unsafe"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{
+ ctlTTL: {sysIP_TTL, 1, marshalTTL, parseTTL},
+ ctlPacketInfo: {sysIP_PKTINFO, sizeofInetPktinfo, marshalPacketInfo, parsePacketInfo},
+ }
+
+ sockOpts = map[int]*sockOpt{
+ ssoTOS: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TOS, Len: 4}},
+ ssoTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TTL, Len: 4}},
+ ssoMulticastTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_TTL, Len: 4}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_IF, Len: sizeofIPMreqn}, typ: ssoTypeIPMreqn},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_LOOP, Len: 4}},
+ ssoReceiveTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVTTL, Len: 4}},
+ ssoPacketInfo: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_PKTINFO, Len: 4}},
+ ssoHeaderPrepend: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_HDRINCL, Len: 4}},
+ ssoICMPFilter: {Option: socket.Option{Level: iana.ProtocolReserved, Name: sysICMP_FILTER, Len: sizeofICMPFilter}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_JOIN_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_LEAVE_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoJoinSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_JOIN_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoLeaveSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_LEAVE_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoBlockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_BLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoUnblockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_UNBLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoAttachFilter: {Option: socket.Option{Level: sysSOL_SOCKET, Name: sysSO_ATTACH_FILTER, Len: sizeofSockFprog}},
+ }
+)
+
+func (pi *inetPktinfo) setIfindex(i int) {
+ pi.Ifindex = int32(i)
+}
+
+func (gr *groupReq) setGroup(grp net.IP) {
+ sa := (*sockaddrInet)(unsafe.Pointer(&gr.Group))
+ sa.Family = syscall.AF_INET
+ copy(sa.Addr[:], grp)
+}
+
+func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
+ sa := (*sockaddrInet)(unsafe.Pointer(&gsr.Group))
+ sa.Family = syscall.AF_INET
+ copy(sa.Addr[:], grp)
+ sa = (*sockaddrInet)(unsafe.Pointer(&gsr.Source))
+ sa.Family = syscall.AF_INET
+ copy(sa.Addr[:], src)
+}
diff --git a/vendor/golang.org/x/net/ipv4/sys_solaris.go b/vendor/golang.org/x/net/ipv4/sys_solaris.go
new file mode 100644
index 0000000..832fef1
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_solaris.go
@@ -0,0 +1,57 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "net"
+ "syscall"
+ "unsafe"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{
+ ctlTTL: {sysIP_RECVTTL, 4, marshalTTL, parseTTL},
+ ctlPacketInfo: {sysIP_PKTINFO, sizeofInetPktinfo, marshalPacketInfo, parsePacketInfo},
+ }
+
+ sockOpts = map[int]sockOpt{
+ ssoTOS: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TOS, Len: 4}},
+ ssoTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TTL, Len: 4}},
+ ssoMulticastTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_TTL, Len: 1}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_IF, Len: 4}},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_LOOP, Len: 1}},
+ ssoReceiveTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVTTL, Len: 4}},
+ ssoPacketInfo: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_RECVPKTINFO, Len: 4}},
+ ssoHeaderPrepend: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_HDRINCL, Len: 4}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_JOIN_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_LEAVE_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoJoinSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_JOIN_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoLeaveSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_LEAVE_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoBlockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_BLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoUnblockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysMCAST_UNBLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ }
+)
+
+func (pi *inetPktinfo) setIfindex(i int) {
+ pi.Ifindex = uint32(i)
+}
+
+func (gr *groupReq) setGroup(grp net.IP) {
+ sa := (*sockaddrInet)(unsafe.Pointer(uintptr(unsafe.Pointer(gr)) + 4))
+ sa.Family = syscall.AF_INET
+ copy(sa.Addr[:], grp)
+}
+
+func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
+ sa := (*sockaddrInet)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 4))
+ sa.Family = syscall.AF_INET
+ copy(sa.Addr[:], grp)
+ sa = (*sockaddrInet)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 260))
+ sa.Family = syscall.AF_INET
+ copy(sa.Addr[:], src)
+}
diff --git a/vendor/golang.org/x/net/ipv4/sys_ssmreq.go b/vendor/golang.org/x/net/ipv4/sys_ssmreq.go
new file mode 100644
index 0000000..eeced7f
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_ssmreq.go
@@ -0,0 +1,52 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin freebsd linux solaris
+
+package ipv4
+
+import (
+ "net"
+ "unsafe"
+
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) setGroupReq(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
+ var gr groupReq
+ if ifi != nil {
+ gr.Interface = uint32(ifi.Index)
+ }
+ gr.setGroup(grp)
+ var b []byte
+ if compatFreeBSD32 {
+ var d [sizeofGroupReq + 4]byte
+ s := (*[sizeofGroupReq]byte)(unsafe.Pointer(&gr))
+ copy(d[:4], s[:4])
+ copy(d[8:], s[4:])
+ b = d[:]
+ } else {
+ b = (*[sizeofGroupReq]byte)(unsafe.Pointer(&gr))[:sizeofGroupReq]
+ }
+ return so.Set(c, b)
+}
+
+func (so *sockOpt) setGroupSourceReq(c *socket.Conn, ifi *net.Interface, grp, src net.IP) error {
+ var gsr groupSourceReq
+ if ifi != nil {
+ gsr.Interface = uint32(ifi.Index)
+ }
+ gsr.setSourceGroup(grp, src)
+ var b []byte
+ if compatFreeBSD32 {
+ var d [sizeofGroupSourceReq + 4]byte
+ s := (*[sizeofGroupSourceReq]byte)(unsafe.Pointer(&gsr))
+ copy(d[:4], s[:4])
+ copy(d[8:], s[4:])
+ b = d[:]
+ } else {
+ b = (*[sizeofGroupSourceReq]byte)(unsafe.Pointer(&gsr))[:sizeofGroupSourceReq]
+ }
+ return so.Set(c, b)
+}
diff --git a/vendor/golang.org/x/net/ipv4/sys_ssmreq_stub.go b/vendor/golang.org/x/net/ipv4/sys_ssmreq_stub.go
new file mode 100644
index 0000000..c092167
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_ssmreq_stub.go
@@ -0,0 +1,21 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !darwin,!freebsd,!linux,!solaris
+
+package ipv4
+
+import (
+ "net"
+
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) setGroupReq(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
+ return errNotImplemented
+}
+
+func (so *sockOpt) setGroupSourceReq(c *socket.Conn, ifi *net.Interface, grp, src net.IP) error {
+ return errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/ipv4/sys_stub.go b/vendor/golang.org/x/net/ipv4/sys_stub.go
new file mode 100644
index 0000000..b9c85b3
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_stub.go
@@ -0,0 +1,13 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+
+package ipv4
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{}
+
+ sockOpts = map[int]*sockOpt{}
+)
diff --git a/vendor/golang.org/x/net/ipv4/sys_windows.go b/vendor/golang.org/x/net/ipv4/sys_windows.go
new file mode 100644
index 0000000..b0913d5
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/sys_windows.go
@@ -0,0 +1,67 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv4
+
+import (
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+const (
+ // See ws2tcpip.h.
+ sysIP_OPTIONS = 0x1
+ sysIP_HDRINCL = 0x2
+ sysIP_TOS = 0x3
+ sysIP_TTL = 0x4
+ sysIP_MULTICAST_IF = 0x9
+ sysIP_MULTICAST_TTL = 0xa
+ sysIP_MULTICAST_LOOP = 0xb
+ sysIP_ADD_MEMBERSHIP = 0xc
+ sysIP_DROP_MEMBERSHIP = 0xd
+ sysIP_DONTFRAGMENT = 0xe
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0xf
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x10
+ sysIP_PKTINFO = 0x13
+
+ sizeofInetPktinfo = 0x8
+ sizeofIPMreq = 0x8
+ sizeofIPMreqSource = 0xc
+)
+
+type inetPktinfo struct {
+ Addr [4]byte
+ Ifindex int32
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte
+ Interface [4]byte
+}
+
+type ipMreqSource struct {
+ Multiaddr [4]byte
+ Sourceaddr [4]byte
+ Interface [4]byte
+}
+
+// See http://msdn.microsoft.com/en-us/library/windows/desktop/ms738586(v=vs.85).aspx
+var (
+ ctlOpts = [ctlMax]ctlOpt{}
+
+ sockOpts = map[int]*sockOpt{
+ ssoTOS: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TOS, Len: 4}},
+ ssoTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_TTL, Len: 4}},
+ ssoMulticastTTL: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_TTL, Len: 4}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_IF, Len: 4}},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_MULTICAST_LOOP, Len: 4}},
+ ssoHeaderPrepend: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_HDRINCL, Len: 4}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_ADD_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIP, Name: sysIP_DROP_MEMBERSHIP, Len: sizeofIPMreq}, typ: ssoTypeIPMreq},
+ }
+)
+
+func (pi *inetPktinfo) setIfindex(i int) {
+ pi.Ifindex = int32(i)
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_aix_ppc64.go b/vendor/golang.org/x/net/ipv4/zsys_aix_ppc64.go
new file mode 100644
index 0000000..c741d5c
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_aix_ppc64.go
@@ -0,0 +1,33 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_aix.go
+
+// Added for go1.11 compatibility
+// +build aix
+
+package ipv4
+
+const (
+ sysIP_OPTIONS = 0x1
+ sysIP_HDRINCL = 0x2
+ sysIP_TOS = 0x3
+ sysIP_TTL = 0x4
+ sysIP_RECVOPTS = 0x5
+ sysIP_RECVRETOPTS = 0x6
+ sysIP_RECVDSTADDR = 0x7
+ sysIP_RETOPTS = 0x8
+ sysIP_RECVIF = 0x20
+ sysIP_RECVTTL = 0x22
+
+ sysIP_MULTICAST_IF = 0x9
+ sysIP_MULTICAST_TTL = 0xa
+ sysIP_MULTICAST_LOOP = 0xb
+ sysIP_ADD_MEMBERSHIP = 0xc
+ sysIP_DROP_MEMBERSHIP = 0xd
+
+ sizeofIPMreq = 0x8
+)
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_darwin.go b/vendor/golang.org/x/net/ipv4/zsys_darwin.go
new file mode 100644
index 0000000..e05a251
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_darwin.go
@@ -0,0 +1,99 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_darwin.go
+
+package ipv4
+
+const (
+ sysIP_OPTIONS = 0x1
+ sysIP_HDRINCL = 0x2
+ sysIP_TOS = 0x3
+ sysIP_TTL = 0x4
+ sysIP_RECVOPTS = 0x5
+ sysIP_RECVRETOPTS = 0x6
+ sysIP_RECVDSTADDR = 0x7
+ sysIP_RETOPTS = 0x8
+ sysIP_RECVIF = 0x14
+ sysIP_STRIPHDR = 0x17
+ sysIP_RECVTTL = 0x18
+ sysIP_BOUND_IF = 0x19
+ sysIP_PKTINFO = 0x1a
+ sysIP_RECVPKTINFO = 0x1a
+
+ sysIP_MULTICAST_IF = 0x9
+ sysIP_MULTICAST_TTL = 0xa
+ sysIP_MULTICAST_LOOP = 0xb
+ sysIP_ADD_MEMBERSHIP = 0xc
+ sysIP_DROP_MEMBERSHIP = 0xd
+ sysIP_MULTICAST_VIF = 0xe
+ sysIP_MULTICAST_IFINDEX = 0x42
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x46
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x47
+ sysIP_BLOCK_SOURCE = 0x48
+ sysIP_UNBLOCK_SOURCE = 0x49
+ sysMCAST_JOIN_GROUP = 0x50
+ sysMCAST_LEAVE_GROUP = 0x51
+ sysMCAST_JOIN_SOURCE_GROUP = 0x52
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x53
+ sysMCAST_BLOCK_SOURCE = 0x54
+ sysMCAST_UNBLOCK_SOURCE = 0x55
+
+ sizeofSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+ sizeofInetPktinfo = 0xc
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x84
+ sizeofGroupSourceReq = 0x104
+)
+
+type sockaddrStorage struct {
+ Len uint8
+ Family uint8
+ X__ss_pad1 [6]int8
+ X__ss_align int64
+ X__ss_pad2 [112]int8
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type inetPktinfo struct {
+ Ifindex uint32
+ Spec_dst [4]byte /* in_addr */
+ Addr [4]byte /* in_addr */
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr [4]byte /* in_addr */
+ Sourceaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [128]byte
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [128]byte
+ Pad_cgo_1 [128]byte
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_dragonfly.go b/vendor/golang.org/x/net/ipv4/zsys_dragonfly.go
new file mode 100644
index 0000000..6d65e9f
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_dragonfly.go
@@ -0,0 +1,31 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_dragonfly.go
+
+package ipv4
+
+const (
+ sysIP_OPTIONS = 0x1
+ sysIP_HDRINCL = 0x2
+ sysIP_TOS = 0x3
+ sysIP_TTL = 0x4
+ sysIP_RECVOPTS = 0x5
+ sysIP_RECVRETOPTS = 0x6
+ sysIP_RECVDSTADDR = 0x7
+ sysIP_RETOPTS = 0x8
+ sysIP_RECVIF = 0x14
+ sysIP_RECVTTL = 0x41
+
+ sysIP_MULTICAST_IF = 0x9
+ sysIP_MULTICAST_TTL = 0xa
+ sysIP_MULTICAST_LOOP = 0xb
+ sysIP_MULTICAST_VIF = 0xe
+ sysIP_ADD_MEMBERSHIP = 0xc
+ sysIP_DROP_MEMBERSHIP = 0xd
+
+ sizeofIPMreq = 0x8
+)
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_freebsd_386.go b/vendor/golang.org/x/net/ipv4/zsys_freebsd_386.go
new file mode 100644
index 0000000..136e2b8
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_freebsd_386.go
@@ -0,0 +1,93 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_freebsd.go
+
+package ipv4
+
+const (
+ sysIP_OPTIONS = 0x1
+ sysIP_HDRINCL = 0x2
+ sysIP_TOS = 0x3
+ sysIP_TTL = 0x4
+ sysIP_RECVOPTS = 0x5
+ sysIP_RECVRETOPTS = 0x6
+ sysIP_RECVDSTADDR = 0x7
+ sysIP_SENDSRCADDR = 0x7
+ sysIP_RETOPTS = 0x8
+ sysIP_RECVIF = 0x14
+ sysIP_ONESBCAST = 0x17
+ sysIP_BINDANY = 0x18
+ sysIP_RECVTTL = 0x41
+ sysIP_MINTTL = 0x42
+ sysIP_DONTFRAG = 0x43
+ sysIP_RECVTOS = 0x44
+
+ sysIP_MULTICAST_IF = 0x9
+ sysIP_MULTICAST_TTL = 0xa
+ sysIP_MULTICAST_LOOP = 0xb
+ sysIP_ADD_MEMBERSHIP = 0xc
+ sysIP_DROP_MEMBERSHIP = 0xd
+ sysIP_MULTICAST_VIF = 0xe
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x46
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x47
+ sysIP_BLOCK_SOURCE = 0x48
+ sysIP_UNBLOCK_SOURCE = 0x49
+ sysMCAST_JOIN_GROUP = 0x50
+ sysMCAST_LEAVE_GROUP = 0x51
+ sysMCAST_JOIN_SOURCE_GROUP = 0x52
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x53
+ sysMCAST_BLOCK_SOURCE = 0x54
+ sysMCAST_UNBLOCK_SOURCE = 0x55
+
+ sizeofSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x84
+ sizeofGroupSourceReq = 0x104
+)
+
+type sockaddrStorage struct {
+ Len uint8
+ Family uint8
+ X__ss_pad1 [6]int8
+ X__ss_align int64
+ X__ss_pad2 [112]int8
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr [4]byte /* in_addr */
+ Sourceaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type groupReq struct {
+ Interface uint32
+ Group sockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Group sockaddrStorage
+ Source sockaddrStorage
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_freebsd_amd64.go b/vendor/golang.org/x/net/ipv4/zsys_freebsd_amd64.go
new file mode 100644
index 0000000..4f730f1
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_freebsd_amd64.go
@@ -0,0 +1,95 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_freebsd.go
+
+package ipv4
+
+const (
+ sysIP_OPTIONS = 0x1
+ sysIP_HDRINCL = 0x2
+ sysIP_TOS = 0x3
+ sysIP_TTL = 0x4
+ sysIP_RECVOPTS = 0x5
+ sysIP_RECVRETOPTS = 0x6
+ sysIP_RECVDSTADDR = 0x7
+ sysIP_SENDSRCADDR = 0x7
+ sysIP_RETOPTS = 0x8
+ sysIP_RECVIF = 0x14
+ sysIP_ONESBCAST = 0x17
+ sysIP_BINDANY = 0x18
+ sysIP_RECVTTL = 0x41
+ sysIP_MINTTL = 0x42
+ sysIP_DONTFRAG = 0x43
+ sysIP_RECVTOS = 0x44
+
+ sysIP_MULTICAST_IF = 0x9
+ sysIP_MULTICAST_TTL = 0xa
+ sysIP_MULTICAST_LOOP = 0xb
+ sysIP_ADD_MEMBERSHIP = 0xc
+ sysIP_DROP_MEMBERSHIP = 0xd
+ sysIP_MULTICAST_VIF = 0xe
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x46
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x47
+ sysIP_BLOCK_SOURCE = 0x48
+ sysIP_UNBLOCK_SOURCE = 0x49
+ sysMCAST_JOIN_GROUP = 0x50
+ sysMCAST_LEAVE_GROUP = 0x51
+ sysMCAST_JOIN_SOURCE_GROUP = 0x52
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x53
+ sysMCAST_BLOCK_SOURCE = 0x54
+ sysMCAST_UNBLOCK_SOURCE = 0x55
+
+ sizeofSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+)
+
+type sockaddrStorage struct {
+ Len uint8
+ Family uint8
+ X__ss_pad1 [6]int8
+ X__ss_align int64
+ X__ss_pad2 [112]int8
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr [4]byte /* in_addr */
+ Sourceaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group sockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group sockaddrStorage
+ Source sockaddrStorage
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_freebsd_arm.go b/vendor/golang.org/x/net/ipv4/zsys_freebsd_arm.go
new file mode 100644
index 0000000..4f730f1
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_freebsd_arm.go
@@ -0,0 +1,95 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_freebsd.go
+
+package ipv4
+
+const (
+ sysIP_OPTIONS = 0x1
+ sysIP_HDRINCL = 0x2
+ sysIP_TOS = 0x3
+ sysIP_TTL = 0x4
+ sysIP_RECVOPTS = 0x5
+ sysIP_RECVRETOPTS = 0x6
+ sysIP_RECVDSTADDR = 0x7
+ sysIP_SENDSRCADDR = 0x7
+ sysIP_RETOPTS = 0x8
+ sysIP_RECVIF = 0x14
+ sysIP_ONESBCAST = 0x17
+ sysIP_BINDANY = 0x18
+ sysIP_RECVTTL = 0x41
+ sysIP_MINTTL = 0x42
+ sysIP_DONTFRAG = 0x43
+ sysIP_RECVTOS = 0x44
+
+ sysIP_MULTICAST_IF = 0x9
+ sysIP_MULTICAST_TTL = 0xa
+ sysIP_MULTICAST_LOOP = 0xb
+ sysIP_ADD_MEMBERSHIP = 0xc
+ sysIP_DROP_MEMBERSHIP = 0xd
+ sysIP_MULTICAST_VIF = 0xe
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x46
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x47
+ sysIP_BLOCK_SOURCE = 0x48
+ sysIP_UNBLOCK_SOURCE = 0x49
+ sysMCAST_JOIN_GROUP = 0x50
+ sysMCAST_LEAVE_GROUP = 0x51
+ sysMCAST_JOIN_SOURCE_GROUP = 0x52
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x53
+ sysMCAST_BLOCK_SOURCE = 0x54
+ sysMCAST_UNBLOCK_SOURCE = 0x55
+
+ sizeofSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+)
+
+type sockaddrStorage struct {
+ Len uint8
+ Family uint8
+ X__ss_pad1 [6]int8
+ X__ss_align int64
+ X__ss_pad2 [112]int8
+}
+
+type sockaddrInet struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr [4]byte /* in_addr */
+ Sourceaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group sockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group sockaddrStorage
+ Source sockaddrStorage
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_linux_386.go b/vendor/golang.org/x/net/ipv4/zsys_linux_386.go
new file mode 100644
index 0000000..43ef8e5
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_linux_386.go
@@ -0,0 +1,148 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+ sysIP_TOS = 0x1
+ sysIP_TTL = 0x2
+ sysIP_HDRINCL = 0x3
+ sysIP_OPTIONS = 0x4
+ sysIP_ROUTER_ALERT = 0x5
+ sysIP_RECVOPTS = 0x6
+ sysIP_RETOPTS = 0x7
+ sysIP_PKTINFO = 0x8
+ sysIP_PKTOPTIONS = 0x9
+ sysIP_MTU_DISCOVER = 0xa
+ sysIP_RECVERR = 0xb
+ sysIP_RECVTTL = 0xc
+ sysIP_RECVTOS = 0xd
+ sysIP_MTU = 0xe
+ sysIP_FREEBIND = 0xf
+ sysIP_TRANSPARENT = 0x13
+ sysIP_RECVRETOPTS = 0x7
+ sysIP_ORIGDSTADDR = 0x14
+ sysIP_RECVORIGDSTADDR = 0x14
+ sysIP_MINTTL = 0x15
+ sysIP_NODEFRAG = 0x16
+ sysIP_UNICAST_IF = 0x32
+
+ sysIP_MULTICAST_IF = 0x20
+ sysIP_MULTICAST_TTL = 0x21
+ sysIP_MULTICAST_LOOP = 0x22
+ sysIP_ADD_MEMBERSHIP = 0x23
+ sysIP_DROP_MEMBERSHIP = 0x24
+ sysIP_UNBLOCK_SOURCE = 0x25
+ sysIP_BLOCK_SOURCE = 0x26
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x27
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+ sysIP_MSFILTER = 0x29
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIP_MULTICAST_ALL = 0x31
+
+ sysICMP_FILTER = 0x1
+
+ sysSO_EE_ORIGIN_NONE = 0x0
+ sysSO_EE_ORIGIN_LOCAL = 0x1
+ sysSO_EE_ORIGIN_ICMP = 0x2
+ sysSO_EE_ORIGIN_ICMP6 = 0x3
+ sysSO_EE_ORIGIN_TXSTATUS = 0x4
+ sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+ sizeofInetPktinfo = 0xc
+ sizeofSockExtendedErr = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x84
+ sizeofGroupSourceReq = 0x104
+
+ sizeofICMPFilter = 0x4
+
+ sizeofSockFprog = 0x8
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+ Ifindex int32
+ Spec_dst [4]byte /* in_addr */
+ Addr [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+ Errno uint32
+ Origin uint8
+ Type uint8
+ Code uint8
+ Pad uint8
+ Info uint32
+ Data uint32
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr uint32
+ Interface uint32
+ Sourceaddr uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+ Data uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [2]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_linux_amd64.go b/vendor/golang.org/x/net/ipv4/zsys_linux_amd64.go
new file mode 100644
index 0000000..ee8204d
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_linux_amd64.go
@@ -0,0 +1,150 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+ sysIP_TOS = 0x1
+ sysIP_TTL = 0x2
+ sysIP_HDRINCL = 0x3
+ sysIP_OPTIONS = 0x4
+ sysIP_ROUTER_ALERT = 0x5
+ sysIP_RECVOPTS = 0x6
+ sysIP_RETOPTS = 0x7
+ sysIP_PKTINFO = 0x8
+ sysIP_PKTOPTIONS = 0x9
+ sysIP_MTU_DISCOVER = 0xa
+ sysIP_RECVERR = 0xb
+ sysIP_RECVTTL = 0xc
+ sysIP_RECVTOS = 0xd
+ sysIP_MTU = 0xe
+ sysIP_FREEBIND = 0xf
+ sysIP_TRANSPARENT = 0x13
+ sysIP_RECVRETOPTS = 0x7
+ sysIP_ORIGDSTADDR = 0x14
+ sysIP_RECVORIGDSTADDR = 0x14
+ sysIP_MINTTL = 0x15
+ sysIP_NODEFRAG = 0x16
+ sysIP_UNICAST_IF = 0x32
+
+ sysIP_MULTICAST_IF = 0x20
+ sysIP_MULTICAST_TTL = 0x21
+ sysIP_MULTICAST_LOOP = 0x22
+ sysIP_ADD_MEMBERSHIP = 0x23
+ sysIP_DROP_MEMBERSHIP = 0x24
+ sysIP_UNBLOCK_SOURCE = 0x25
+ sysIP_BLOCK_SOURCE = 0x26
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x27
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+ sysIP_MSFILTER = 0x29
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIP_MULTICAST_ALL = 0x31
+
+ sysICMP_FILTER = 0x1
+
+ sysSO_EE_ORIGIN_NONE = 0x0
+ sysSO_EE_ORIGIN_LOCAL = 0x1
+ sysSO_EE_ORIGIN_ICMP = 0x2
+ sysSO_EE_ORIGIN_ICMP6 = 0x3
+ sysSO_EE_ORIGIN_TXSTATUS = 0x4
+ sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+ sizeofInetPktinfo = 0xc
+ sizeofSockExtendedErr = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPFilter = 0x4
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+ Ifindex int32
+ Spec_dst [4]byte /* in_addr */
+ Addr [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+ Errno uint32
+ Origin uint8
+ Type uint8
+ Code uint8
+ Pad uint8
+ Info uint32
+ Data uint32
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr uint32
+ Interface uint32
+ Sourceaddr uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+ Data uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [6]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_linux_arm.go b/vendor/golang.org/x/net/ipv4/zsys_linux_arm.go
new file mode 100644
index 0000000..43ef8e5
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_linux_arm.go
@@ -0,0 +1,148 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+ sysIP_TOS = 0x1
+ sysIP_TTL = 0x2
+ sysIP_HDRINCL = 0x3
+ sysIP_OPTIONS = 0x4
+ sysIP_ROUTER_ALERT = 0x5
+ sysIP_RECVOPTS = 0x6
+ sysIP_RETOPTS = 0x7
+ sysIP_PKTINFO = 0x8
+ sysIP_PKTOPTIONS = 0x9
+ sysIP_MTU_DISCOVER = 0xa
+ sysIP_RECVERR = 0xb
+ sysIP_RECVTTL = 0xc
+ sysIP_RECVTOS = 0xd
+ sysIP_MTU = 0xe
+ sysIP_FREEBIND = 0xf
+ sysIP_TRANSPARENT = 0x13
+ sysIP_RECVRETOPTS = 0x7
+ sysIP_ORIGDSTADDR = 0x14
+ sysIP_RECVORIGDSTADDR = 0x14
+ sysIP_MINTTL = 0x15
+ sysIP_NODEFRAG = 0x16
+ sysIP_UNICAST_IF = 0x32
+
+ sysIP_MULTICAST_IF = 0x20
+ sysIP_MULTICAST_TTL = 0x21
+ sysIP_MULTICAST_LOOP = 0x22
+ sysIP_ADD_MEMBERSHIP = 0x23
+ sysIP_DROP_MEMBERSHIP = 0x24
+ sysIP_UNBLOCK_SOURCE = 0x25
+ sysIP_BLOCK_SOURCE = 0x26
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x27
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+ sysIP_MSFILTER = 0x29
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIP_MULTICAST_ALL = 0x31
+
+ sysICMP_FILTER = 0x1
+
+ sysSO_EE_ORIGIN_NONE = 0x0
+ sysSO_EE_ORIGIN_LOCAL = 0x1
+ sysSO_EE_ORIGIN_ICMP = 0x2
+ sysSO_EE_ORIGIN_ICMP6 = 0x3
+ sysSO_EE_ORIGIN_TXSTATUS = 0x4
+ sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+ sizeofInetPktinfo = 0xc
+ sizeofSockExtendedErr = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x84
+ sizeofGroupSourceReq = 0x104
+
+ sizeofICMPFilter = 0x4
+
+ sizeofSockFprog = 0x8
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+ Ifindex int32
+ Spec_dst [4]byte /* in_addr */
+ Addr [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+ Errno uint32
+ Origin uint8
+ Type uint8
+ Code uint8
+ Pad uint8
+ Info uint32
+ Data uint32
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr uint32
+ Interface uint32
+ Sourceaddr uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+ Data uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [2]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_linux_arm64.go b/vendor/golang.org/x/net/ipv4/zsys_linux_arm64.go
new file mode 100644
index 0000000..ee8204d
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_linux_arm64.go
@@ -0,0 +1,150 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+ sysIP_TOS = 0x1
+ sysIP_TTL = 0x2
+ sysIP_HDRINCL = 0x3
+ sysIP_OPTIONS = 0x4
+ sysIP_ROUTER_ALERT = 0x5
+ sysIP_RECVOPTS = 0x6
+ sysIP_RETOPTS = 0x7
+ sysIP_PKTINFO = 0x8
+ sysIP_PKTOPTIONS = 0x9
+ sysIP_MTU_DISCOVER = 0xa
+ sysIP_RECVERR = 0xb
+ sysIP_RECVTTL = 0xc
+ sysIP_RECVTOS = 0xd
+ sysIP_MTU = 0xe
+ sysIP_FREEBIND = 0xf
+ sysIP_TRANSPARENT = 0x13
+ sysIP_RECVRETOPTS = 0x7
+ sysIP_ORIGDSTADDR = 0x14
+ sysIP_RECVORIGDSTADDR = 0x14
+ sysIP_MINTTL = 0x15
+ sysIP_NODEFRAG = 0x16
+ sysIP_UNICAST_IF = 0x32
+
+ sysIP_MULTICAST_IF = 0x20
+ sysIP_MULTICAST_TTL = 0x21
+ sysIP_MULTICAST_LOOP = 0x22
+ sysIP_ADD_MEMBERSHIP = 0x23
+ sysIP_DROP_MEMBERSHIP = 0x24
+ sysIP_UNBLOCK_SOURCE = 0x25
+ sysIP_BLOCK_SOURCE = 0x26
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x27
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+ sysIP_MSFILTER = 0x29
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIP_MULTICAST_ALL = 0x31
+
+ sysICMP_FILTER = 0x1
+
+ sysSO_EE_ORIGIN_NONE = 0x0
+ sysSO_EE_ORIGIN_LOCAL = 0x1
+ sysSO_EE_ORIGIN_ICMP = 0x2
+ sysSO_EE_ORIGIN_ICMP6 = 0x3
+ sysSO_EE_ORIGIN_TXSTATUS = 0x4
+ sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+ sizeofInetPktinfo = 0xc
+ sizeofSockExtendedErr = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPFilter = 0x4
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+ Ifindex int32
+ Spec_dst [4]byte /* in_addr */
+ Addr [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+ Errno uint32
+ Origin uint8
+ Type uint8
+ Code uint8
+ Pad uint8
+ Info uint32
+ Data uint32
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr uint32
+ Interface uint32
+ Sourceaddr uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+ Data uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [6]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_linux_mips.go b/vendor/golang.org/x/net/ipv4/zsys_linux_mips.go
new file mode 100644
index 0000000..43ef8e5
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_linux_mips.go
@@ -0,0 +1,148 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+ sysIP_TOS = 0x1
+ sysIP_TTL = 0x2
+ sysIP_HDRINCL = 0x3
+ sysIP_OPTIONS = 0x4
+ sysIP_ROUTER_ALERT = 0x5
+ sysIP_RECVOPTS = 0x6
+ sysIP_RETOPTS = 0x7
+ sysIP_PKTINFO = 0x8
+ sysIP_PKTOPTIONS = 0x9
+ sysIP_MTU_DISCOVER = 0xa
+ sysIP_RECVERR = 0xb
+ sysIP_RECVTTL = 0xc
+ sysIP_RECVTOS = 0xd
+ sysIP_MTU = 0xe
+ sysIP_FREEBIND = 0xf
+ sysIP_TRANSPARENT = 0x13
+ sysIP_RECVRETOPTS = 0x7
+ sysIP_ORIGDSTADDR = 0x14
+ sysIP_RECVORIGDSTADDR = 0x14
+ sysIP_MINTTL = 0x15
+ sysIP_NODEFRAG = 0x16
+ sysIP_UNICAST_IF = 0x32
+
+ sysIP_MULTICAST_IF = 0x20
+ sysIP_MULTICAST_TTL = 0x21
+ sysIP_MULTICAST_LOOP = 0x22
+ sysIP_ADD_MEMBERSHIP = 0x23
+ sysIP_DROP_MEMBERSHIP = 0x24
+ sysIP_UNBLOCK_SOURCE = 0x25
+ sysIP_BLOCK_SOURCE = 0x26
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x27
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+ sysIP_MSFILTER = 0x29
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIP_MULTICAST_ALL = 0x31
+
+ sysICMP_FILTER = 0x1
+
+ sysSO_EE_ORIGIN_NONE = 0x0
+ sysSO_EE_ORIGIN_LOCAL = 0x1
+ sysSO_EE_ORIGIN_ICMP = 0x2
+ sysSO_EE_ORIGIN_ICMP6 = 0x3
+ sysSO_EE_ORIGIN_TXSTATUS = 0x4
+ sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+ sizeofInetPktinfo = 0xc
+ sizeofSockExtendedErr = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x84
+ sizeofGroupSourceReq = 0x104
+
+ sizeofICMPFilter = 0x4
+
+ sizeofSockFprog = 0x8
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+ Ifindex int32
+ Spec_dst [4]byte /* in_addr */
+ Addr [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+ Errno uint32
+ Origin uint8
+ Type uint8
+ Code uint8
+ Pad uint8
+ Info uint32
+ Data uint32
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr uint32
+ Interface uint32
+ Sourceaddr uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+ Data uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [2]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_linux_mips64.go b/vendor/golang.org/x/net/ipv4/zsys_linux_mips64.go
new file mode 100644
index 0000000..ee8204d
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_linux_mips64.go
@@ -0,0 +1,150 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+ sysIP_TOS = 0x1
+ sysIP_TTL = 0x2
+ sysIP_HDRINCL = 0x3
+ sysIP_OPTIONS = 0x4
+ sysIP_ROUTER_ALERT = 0x5
+ sysIP_RECVOPTS = 0x6
+ sysIP_RETOPTS = 0x7
+ sysIP_PKTINFO = 0x8
+ sysIP_PKTOPTIONS = 0x9
+ sysIP_MTU_DISCOVER = 0xa
+ sysIP_RECVERR = 0xb
+ sysIP_RECVTTL = 0xc
+ sysIP_RECVTOS = 0xd
+ sysIP_MTU = 0xe
+ sysIP_FREEBIND = 0xf
+ sysIP_TRANSPARENT = 0x13
+ sysIP_RECVRETOPTS = 0x7
+ sysIP_ORIGDSTADDR = 0x14
+ sysIP_RECVORIGDSTADDR = 0x14
+ sysIP_MINTTL = 0x15
+ sysIP_NODEFRAG = 0x16
+ sysIP_UNICAST_IF = 0x32
+
+ sysIP_MULTICAST_IF = 0x20
+ sysIP_MULTICAST_TTL = 0x21
+ sysIP_MULTICAST_LOOP = 0x22
+ sysIP_ADD_MEMBERSHIP = 0x23
+ sysIP_DROP_MEMBERSHIP = 0x24
+ sysIP_UNBLOCK_SOURCE = 0x25
+ sysIP_BLOCK_SOURCE = 0x26
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x27
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+ sysIP_MSFILTER = 0x29
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIP_MULTICAST_ALL = 0x31
+
+ sysICMP_FILTER = 0x1
+
+ sysSO_EE_ORIGIN_NONE = 0x0
+ sysSO_EE_ORIGIN_LOCAL = 0x1
+ sysSO_EE_ORIGIN_ICMP = 0x2
+ sysSO_EE_ORIGIN_ICMP6 = 0x3
+ sysSO_EE_ORIGIN_TXSTATUS = 0x4
+ sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+ sizeofInetPktinfo = 0xc
+ sizeofSockExtendedErr = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPFilter = 0x4
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+ Ifindex int32
+ Spec_dst [4]byte /* in_addr */
+ Addr [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+ Errno uint32
+ Origin uint8
+ Type uint8
+ Code uint8
+ Pad uint8
+ Info uint32
+ Data uint32
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr uint32
+ Interface uint32
+ Sourceaddr uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+ Data uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [6]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_linux_mips64le.go b/vendor/golang.org/x/net/ipv4/zsys_linux_mips64le.go
new file mode 100644
index 0000000..ee8204d
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_linux_mips64le.go
@@ -0,0 +1,150 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+ sysIP_TOS = 0x1
+ sysIP_TTL = 0x2
+ sysIP_HDRINCL = 0x3
+ sysIP_OPTIONS = 0x4
+ sysIP_ROUTER_ALERT = 0x5
+ sysIP_RECVOPTS = 0x6
+ sysIP_RETOPTS = 0x7
+ sysIP_PKTINFO = 0x8
+ sysIP_PKTOPTIONS = 0x9
+ sysIP_MTU_DISCOVER = 0xa
+ sysIP_RECVERR = 0xb
+ sysIP_RECVTTL = 0xc
+ sysIP_RECVTOS = 0xd
+ sysIP_MTU = 0xe
+ sysIP_FREEBIND = 0xf
+ sysIP_TRANSPARENT = 0x13
+ sysIP_RECVRETOPTS = 0x7
+ sysIP_ORIGDSTADDR = 0x14
+ sysIP_RECVORIGDSTADDR = 0x14
+ sysIP_MINTTL = 0x15
+ sysIP_NODEFRAG = 0x16
+ sysIP_UNICAST_IF = 0x32
+
+ sysIP_MULTICAST_IF = 0x20
+ sysIP_MULTICAST_TTL = 0x21
+ sysIP_MULTICAST_LOOP = 0x22
+ sysIP_ADD_MEMBERSHIP = 0x23
+ sysIP_DROP_MEMBERSHIP = 0x24
+ sysIP_UNBLOCK_SOURCE = 0x25
+ sysIP_BLOCK_SOURCE = 0x26
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x27
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+ sysIP_MSFILTER = 0x29
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIP_MULTICAST_ALL = 0x31
+
+ sysICMP_FILTER = 0x1
+
+ sysSO_EE_ORIGIN_NONE = 0x0
+ sysSO_EE_ORIGIN_LOCAL = 0x1
+ sysSO_EE_ORIGIN_ICMP = 0x2
+ sysSO_EE_ORIGIN_ICMP6 = 0x3
+ sysSO_EE_ORIGIN_TXSTATUS = 0x4
+ sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+ sizeofInetPktinfo = 0xc
+ sizeofSockExtendedErr = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPFilter = 0x4
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+ Ifindex int32
+ Spec_dst [4]byte /* in_addr */
+ Addr [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+ Errno uint32
+ Origin uint8
+ Type uint8
+ Code uint8
+ Pad uint8
+ Info uint32
+ Data uint32
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr uint32
+ Interface uint32
+ Sourceaddr uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+ Data uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [6]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_linux_mipsle.go b/vendor/golang.org/x/net/ipv4/zsys_linux_mipsle.go
new file mode 100644
index 0000000..43ef8e5
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_linux_mipsle.go
@@ -0,0 +1,148 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+ sysIP_TOS = 0x1
+ sysIP_TTL = 0x2
+ sysIP_HDRINCL = 0x3
+ sysIP_OPTIONS = 0x4
+ sysIP_ROUTER_ALERT = 0x5
+ sysIP_RECVOPTS = 0x6
+ sysIP_RETOPTS = 0x7
+ sysIP_PKTINFO = 0x8
+ sysIP_PKTOPTIONS = 0x9
+ sysIP_MTU_DISCOVER = 0xa
+ sysIP_RECVERR = 0xb
+ sysIP_RECVTTL = 0xc
+ sysIP_RECVTOS = 0xd
+ sysIP_MTU = 0xe
+ sysIP_FREEBIND = 0xf
+ sysIP_TRANSPARENT = 0x13
+ sysIP_RECVRETOPTS = 0x7
+ sysIP_ORIGDSTADDR = 0x14
+ sysIP_RECVORIGDSTADDR = 0x14
+ sysIP_MINTTL = 0x15
+ sysIP_NODEFRAG = 0x16
+ sysIP_UNICAST_IF = 0x32
+
+ sysIP_MULTICAST_IF = 0x20
+ sysIP_MULTICAST_TTL = 0x21
+ sysIP_MULTICAST_LOOP = 0x22
+ sysIP_ADD_MEMBERSHIP = 0x23
+ sysIP_DROP_MEMBERSHIP = 0x24
+ sysIP_UNBLOCK_SOURCE = 0x25
+ sysIP_BLOCK_SOURCE = 0x26
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x27
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+ sysIP_MSFILTER = 0x29
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIP_MULTICAST_ALL = 0x31
+
+ sysICMP_FILTER = 0x1
+
+ sysSO_EE_ORIGIN_NONE = 0x0
+ sysSO_EE_ORIGIN_LOCAL = 0x1
+ sysSO_EE_ORIGIN_ICMP = 0x2
+ sysSO_EE_ORIGIN_ICMP6 = 0x3
+ sysSO_EE_ORIGIN_TXSTATUS = 0x4
+ sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+ sizeofInetPktinfo = 0xc
+ sizeofSockExtendedErr = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x84
+ sizeofGroupSourceReq = 0x104
+
+ sizeofICMPFilter = 0x4
+
+ sizeofSockFprog = 0x8
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+ Ifindex int32
+ Spec_dst [4]byte /* in_addr */
+ Addr [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+ Errno uint32
+ Origin uint8
+ Type uint8
+ Code uint8
+ Pad uint8
+ Info uint32
+ Data uint32
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr uint32
+ Interface uint32
+ Sourceaddr uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+ Data uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [2]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_linux_ppc.go b/vendor/golang.org/x/net/ipv4/zsys_linux_ppc.go
new file mode 100644
index 0000000..fa1b6bc
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_linux_ppc.go
@@ -0,0 +1,148 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+ sysIP_TOS = 0x1
+ sysIP_TTL = 0x2
+ sysIP_HDRINCL = 0x3
+ sysIP_OPTIONS = 0x4
+ sysIP_ROUTER_ALERT = 0x5
+ sysIP_RECVOPTS = 0x6
+ sysIP_RETOPTS = 0x7
+ sysIP_PKTINFO = 0x8
+ sysIP_PKTOPTIONS = 0x9
+ sysIP_MTU_DISCOVER = 0xa
+ sysIP_RECVERR = 0xb
+ sysIP_RECVTTL = 0xc
+ sysIP_RECVTOS = 0xd
+ sysIP_MTU = 0xe
+ sysIP_FREEBIND = 0xf
+ sysIP_TRANSPARENT = 0x13
+ sysIP_RECVRETOPTS = 0x7
+ sysIP_ORIGDSTADDR = 0x14
+ sysIP_RECVORIGDSTADDR = 0x14
+ sysIP_MINTTL = 0x15
+ sysIP_NODEFRAG = 0x16
+ sysIP_UNICAST_IF = 0x32
+
+ sysIP_MULTICAST_IF = 0x20
+ sysIP_MULTICAST_TTL = 0x21
+ sysIP_MULTICAST_LOOP = 0x22
+ sysIP_ADD_MEMBERSHIP = 0x23
+ sysIP_DROP_MEMBERSHIP = 0x24
+ sysIP_UNBLOCK_SOURCE = 0x25
+ sysIP_BLOCK_SOURCE = 0x26
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x27
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+ sysIP_MSFILTER = 0x29
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIP_MULTICAST_ALL = 0x31
+
+ sysICMP_FILTER = 0x1
+
+ sysSO_EE_ORIGIN_NONE = 0x0
+ sysSO_EE_ORIGIN_LOCAL = 0x1
+ sysSO_EE_ORIGIN_ICMP = 0x2
+ sysSO_EE_ORIGIN_ICMP6 = 0x3
+ sysSO_EE_ORIGIN_TXSTATUS = 0x4
+ sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+ sizeofInetPktinfo = 0xc
+ sizeofSockExtendedErr = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x84
+ sizeofGroupSourceReq = 0x104
+
+ sizeofICMPFilter = 0x4
+
+ sizeofSockFprog = 0x8
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]uint8
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+ Ifindex int32
+ Spec_dst [4]byte /* in_addr */
+ Addr [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+ Errno uint32
+ Origin uint8
+ Type uint8
+ Code uint8
+ Pad uint8
+ Info uint32
+ Data uint32
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr uint32
+ Interface uint32
+ Sourceaddr uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+ Data uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [2]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_linux_ppc64.go b/vendor/golang.org/x/net/ipv4/zsys_linux_ppc64.go
new file mode 100644
index 0000000..ee8204d
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_linux_ppc64.go
@@ -0,0 +1,150 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+ sysIP_TOS = 0x1
+ sysIP_TTL = 0x2
+ sysIP_HDRINCL = 0x3
+ sysIP_OPTIONS = 0x4
+ sysIP_ROUTER_ALERT = 0x5
+ sysIP_RECVOPTS = 0x6
+ sysIP_RETOPTS = 0x7
+ sysIP_PKTINFO = 0x8
+ sysIP_PKTOPTIONS = 0x9
+ sysIP_MTU_DISCOVER = 0xa
+ sysIP_RECVERR = 0xb
+ sysIP_RECVTTL = 0xc
+ sysIP_RECVTOS = 0xd
+ sysIP_MTU = 0xe
+ sysIP_FREEBIND = 0xf
+ sysIP_TRANSPARENT = 0x13
+ sysIP_RECVRETOPTS = 0x7
+ sysIP_ORIGDSTADDR = 0x14
+ sysIP_RECVORIGDSTADDR = 0x14
+ sysIP_MINTTL = 0x15
+ sysIP_NODEFRAG = 0x16
+ sysIP_UNICAST_IF = 0x32
+
+ sysIP_MULTICAST_IF = 0x20
+ sysIP_MULTICAST_TTL = 0x21
+ sysIP_MULTICAST_LOOP = 0x22
+ sysIP_ADD_MEMBERSHIP = 0x23
+ sysIP_DROP_MEMBERSHIP = 0x24
+ sysIP_UNBLOCK_SOURCE = 0x25
+ sysIP_BLOCK_SOURCE = 0x26
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x27
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+ sysIP_MSFILTER = 0x29
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIP_MULTICAST_ALL = 0x31
+
+ sysICMP_FILTER = 0x1
+
+ sysSO_EE_ORIGIN_NONE = 0x0
+ sysSO_EE_ORIGIN_LOCAL = 0x1
+ sysSO_EE_ORIGIN_ICMP = 0x2
+ sysSO_EE_ORIGIN_ICMP6 = 0x3
+ sysSO_EE_ORIGIN_TXSTATUS = 0x4
+ sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+ sizeofInetPktinfo = 0xc
+ sizeofSockExtendedErr = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPFilter = 0x4
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+ Ifindex int32
+ Spec_dst [4]byte /* in_addr */
+ Addr [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+ Errno uint32
+ Origin uint8
+ Type uint8
+ Code uint8
+ Pad uint8
+ Info uint32
+ Data uint32
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr uint32
+ Interface uint32
+ Sourceaddr uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+ Data uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [6]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_linux_ppc64le.go b/vendor/golang.org/x/net/ipv4/zsys_linux_ppc64le.go
new file mode 100644
index 0000000..ee8204d
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_linux_ppc64le.go
@@ -0,0 +1,150 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+ sysIP_TOS = 0x1
+ sysIP_TTL = 0x2
+ sysIP_HDRINCL = 0x3
+ sysIP_OPTIONS = 0x4
+ sysIP_ROUTER_ALERT = 0x5
+ sysIP_RECVOPTS = 0x6
+ sysIP_RETOPTS = 0x7
+ sysIP_PKTINFO = 0x8
+ sysIP_PKTOPTIONS = 0x9
+ sysIP_MTU_DISCOVER = 0xa
+ sysIP_RECVERR = 0xb
+ sysIP_RECVTTL = 0xc
+ sysIP_RECVTOS = 0xd
+ sysIP_MTU = 0xe
+ sysIP_FREEBIND = 0xf
+ sysIP_TRANSPARENT = 0x13
+ sysIP_RECVRETOPTS = 0x7
+ sysIP_ORIGDSTADDR = 0x14
+ sysIP_RECVORIGDSTADDR = 0x14
+ sysIP_MINTTL = 0x15
+ sysIP_NODEFRAG = 0x16
+ sysIP_UNICAST_IF = 0x32
+
+ sysIP_MULTICAST_IF = 0x20
+ sysIP_MULTICAST_TTL = 0x21
+ sysIP_MULTICAST_LOOP = 0x22
+ sysIP_ADD_MEMBERSHIP = 0x23
+ sysIP_DROP_MEMBERSHIP = 0x24
+ sysIP_UNBLOCK_SOURCE = 0x25
+ sysIP_BLOCK_SOURCE = 0x26
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x27
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+ sysIP_MSFILTER = 0x29
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIP_MULTICAST_ALL = 0x31
+
+ sysICMP_FILTER = 0x1
+
+ sysSO_EE_ORIGIN_NONE = 0x0
+ sysSO_EE_ORIGIN_LOCAL = 0x1
+ sysSO_EE_ORIGIN_ICMP = 0x2
+ sysSO_EE_ORIGIN_ICMP6 = 0x3
+ sysSO_EE_ORIGIN_TXSTATUS = 0x4
+ sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+ sizeofInetPktinfo = 0xc
+ sizeofSockExtendedErr = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPFilter = 0x4
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+ Ifindex int32
+ Spec_dst [4]byte /* in_addr */
+ Addr [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+ Errno uint32
+ Origin uint8
+ Type uint8
+ Code uint8
+ Pad uint8
+ Info uint32
+ Data uint32
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr uint32
+ Interface uint32
+ Sourceaddr uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+ Data uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [6]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_linux_riscv64.go b/vendor/golang.org/x/net/ipv4/zsys_linux_riscv64.go
new file mode 100644
index 0000000..0c0d480
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_linux_riscv64.go
@@ -0,0 +1,151 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+// +build riscv64
+
+package ipv4
+
+const (
+ sysIP_TOS = 0x1
+ sysIP_TTL = 0x2
+ sysIP_HDRINCL = 0x3
+ sysIP_OPTIONS = 0x4
+ sysIP_ROUTER_ALERT = 0x5
+ sysIP_RECVOPTS = 0x6
+ sysIP_RETOPTS = 0x7
+ sysIP_PKTINFO = 0x8
+ sysIP_PKTOPTIONS = 0x9
+ sysIP_MTU_DISCOVER = 0xa
+ sysIP_RECVERR = 0xb
+ sysIP_RECVTTL = 0xc
+ sysIP_RECVTOS = 0xd
+ sysIP_MTU = 0xe
+ sysIP_FREEBIND = 0xf
+ sysIP_TRANSPARENT = 0x13
+ sysIP_RECVRETOPTS = 0x7
+ sysIP_ORIGDSTADDR = 0x14
+ sysIP_RECVORIGDSTADDR = 0x14
+ sysIP_MINTTL = 0x15
+ sysIP_NODEFRAG = 0x16
+ sysIP_UNICAST_IF = 0x32
+
+ sysIP_MULTICAST_IF = 0x20
+ sysIP_MULTICAST_TTL = 0x21
+ sysIP_MULTICAST_LOOP = 0x22
+ sysIP_ADD_MEMBERSHIP = 0x23
+ sysIP_DROP_MEMBERSHIP = 0x24
+ sysIP_UNBLOCK_SOURCE = 0x25
+ sysIP_BLOCK_SOURCE = 0x26
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x27
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+ sysIP_MSFILTER = 0x29
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIP_MULTICAST_ALL = 0x31
+
+ sysICMP_FILTER = 0x1
+
+ sysSO_EE_ORIGIN_NONE = 0x0
+ sysSO_EE_ORIGIN_LOCAL = 0x1
+ sysSO_EE_ORIGIN_ICMP = 0x2
+ sysSO_EE_ORIGIN_ICMP6 = 0x3
+ sysSO_EE_ORIGIN_TXSTATUS = 0x4
+ sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+ sizeofInetPktinfo = 0xc
+ sizeofSockExtendedErr = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPFilter = 0x4
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+ Ifindex int32
+ Spec_dst [4]byte /* in_addr */
+ Addr [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+ Errno uint32
+ Origin uint8
+ Type uint8
+ Code uint8
+ Pad uint8
+ Info uint32
+ Data uint32
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr uint32
+ Interface uint32
+ Sourceaddr uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+ Data uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_linux_s390x.go b/vendor/golang.org/x/net/ipv4/zsys_linux_s390x.go
new file mode 100644
index 0000000..ee8204d
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_linux_s390x.go
@@ -0,0 +1,150 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv4
+
+const (
+ sysIP_TOS = 0x1
+ sysIP_TTL = 0x2
+ sysIP_HDRINCL = 0x3
+ sysIP_OPTIONS = 0x4
+ sysIP_ROUTER_ALERT = 0x5
+ sysIP_RECVOPTS = 0x6
+ sysIP_RETOPTS = 0x7
+ sysIP_PKTINFO = 0x8
+ sysIP_PKTOPTIONS = 0x9
+ sysIP_MTU_DISCOVER = 0xa
+ sysIP_RECVERR = 0xb
+ sysIP_RECVTTL = 0xc
+ sysIP_RECVTOS = 0xd
+ sysIP_MTU = 0xe
+ sysIP_FREEBIND = 0xf
+ sysIP_TRANSPARENT = 0x13
+ sysIP_RECVRETOPTS = 0x7
+ sysIP_ORIGDSTADDR = 0x14
+ sysIP_RECVORIGDSTADDR = 0x14
+ sysIP_MINTTL = 0x15
+ sysIP_NODEFRAG = 0x16
+ sysIP_UNICAST_IF = 0x32
+
+ sysIP_MULTICAST_IF = 0x20
+ sysIP_MULTICAST_TTL = 0x21
+ sysIP_MULTICAST_LOOP = 0x22
+ sysIP_ADD_MEMBERSHIP = 0x23
+ sysIP_DROP_MEMBERSHIP = 0x24
+ sysIP_UNBLOCK_SOURCE = 0x25
+ sysIP_BLOCK_SOURCE = 0x26
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x27
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x28
+ sysIP_MSFILTER = 0x29
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIP_MULTICAST_ALL = 0x31
+
+ sysICMP_FILTER = 0x1
+
+ sysSO_EE_ORIGIN_NONE = 0x0
+ sysSO_EE_ORIGIN_LOCAL = 0x1
+ sysSO_EE_ORIGIN_ICMP = 0x2
+ sysSO_EE_ORIGIN_ICMP6 = 0x3
+ sysSO_EE_ORIGIN_TXSTATUS = 0x4
+ sysSO_EE_ORIGIN_TIMESTAMPING = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet = 0x10
+ sizeofInetPktinfo = 0xc
+ sizeofSockExtendedErr = 0x10
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqn = 0xc
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPFilter = 0x4
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+ Ifindex int32
+ Spec_dst [4]byte /* in_addr */
+ Addr [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+ Errno uint32
+ Origin uint8
+ Type uint8
+ Code uint8
+ Pad uint8
+ Info uint32
+ Data uint32
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqn struct {
+ Multiaddr [4]byte /* in_addr */
+ Address [4]byte /* in_addr */
+ Ifindex int32
+}
+
+type ipMreqSource struct {
+ Multiaddr uint32
+ Interface uint32
+ Sourceaddr uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+ Data uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [6]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_netbsd.go b/vendor/golang.org/x/net/ipv4/zsys_netbsd.go
new file mode 100644
index 0000000..8cfc648
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_netbsd.go
@@ -0,0 +1,30 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_netbsd.go
+
+package ipv4
+
+const (
+ sysIP_OPTIONS = 0x1
+ sysIP_HDRINCL = 0x2
+ sysIP_TOS = 0x3
+ sysIP_TTL = 0x4
+ sysIP_RECVOPTS = 0x5
+ sysIP_RECVRETOPTS = 0x6
+ sysIP_RECVDSTADDR = 0x7
+ sysIP_RETOPTS = 0x8
+ sysIP_RECVIF = 0x14
+ sysIP_RECVTTL = 0x17
+
+ sysIP_MULTICAST_IF = 0x9
+ sysIP_MULTICAST_TTL = 0xa
+ sysIP_MULTICAST_LOOP = 0xb
+ sysIP_ADD_MEMBERSHIP = 0xc
+ sysIP_DROP_MEMBERSHIP = 0xd
+
+ sizeofIPMreq = 0x8
+)
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_openbsd.go b/vendor/golang.org/x/net/ipv4/zsys_openbsd.go
new file mode 100644
index 0000000..37629cb
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_openbsd.go
@@ -0,0 +1,30 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_openbsd.go
+
+package ipv4
+
+const (
+ sysIP_OPTIONS = 0x1
+ sysIP_HDRINCL = 0x2
+ sysIP_TOS = 0x3
+ sysIP_TTL = 0x4
+ sysIP_RECVOPTS = 0x5
+ sysIP_RECVRETOPTS = 0x6
+ sysIP_RECVDSTADDR = 0x7
+ sysIP_RETOPTS = 0x8
+ sysIP_RECVIF = 0x1e
+ sysIP_RECVTTL = 0x1f
+
+ sysIP_MULTICAST_IF = 0x9
+ sysIP_MULTICAST_TTL = 0xa
+ sysIP_MULTICAST_LOOP = 0xb
+ sysIP_ADD_MEMBERSHIP = 0xc
+ sysIP_DROP_MEMBERSHIP = 0xd
+
+ sizeofIPMreq = 0x8
+)
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
diff --git a/vendor/golang.org/x/net/ipv4/zsys_solaris.go b/vendor/golang.org/x/net/ipv4/zsys_solaris.go
new file mode 100644
index 0000000..cb80a30
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/zsys_solaris.go
@@ -0,0 +1,100 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_solaris.go
+
+package ipv4
+
+const (
+ sysIP_OPTIONS = 0x1
+ sysIP_HDRINCL = 0x2
+ sysIP_TOS = 0x3
+ sysIP_TTL = 0x4
+ sysIP_RECVOPTS = 0x5
+ sysIP_RECVRETOPTS = 0x6
+ sysIP_RECVDSTADDR = 0x7
+ sysIP_RETOPTS = 0x8
+ sysIP_RECVIF = 0x9
+ sysIP_RECVSLLA = 0xa
+ sysIP_RECVTTL = 0xb
+
+ sysIP_MULTICAST_IF = 0x10
+ sysIP_MULTICAST_TTL = 0x11
+ sysIP_MULTICAST_LOOP = 0x12
+ sysIP_ADD_MEMBERSHIP = 0x13
+ sysIP_DROP_MEMBERSHIP = 0x14
+ sysIP_BLOCK_SOURCE = 0x15
+ sysIP_UNBLOCK_SOURCE = 0x16
+ sysIP_ADD_SOURCE_MEMBERSHIP = 0x17
+ sysIP_DROP_SOURCE_MEMBERSHIP = 0x18
+ sysIP_NEXTHOP = 0x19
+
+ sysIP_PKTINFO = 0x1a
+ sysIP_RECVPKTINFO = 0x1a
+ sysIP_DONTFRAG = 0x1b
+
+ sysIP_BOUND_IF = 0x41
+ sysIP_UNSPEC_SRC = 0x42
+ sysIP_BROADCAST_TTL = 0x43
+ sysIP_DHCPINIT_IF = 0x45
+
+ sysIP_REUSEADDR = 0x104
+ sysIP_DONTROUTE = 0x105
+ sysIP_BROADCAST = 0x106
+
+ sysMCAST_JOIN_GROUP = 0x29
+ sysMCAST_LEAVE_GROUP = 0x2a
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2d
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2e
+
+ sizeofSockaddrStorage = 0x100
+ sizeofSockaddrInet = 0x10
+ sizeofInetPktinfo = 0xc
+
+ sizeofIPMreq = 0x8
+ sizeofIPMreqSource = 0xc
+ sizeofGroupReq = 0x104
+ sizeofGroupSourceReq = 0x204
+)
+
+type sockaddrStorage struct {
+ Family uint16
+ X_ss_pad1 [6]int8
+ X_ss_align float64
+ X_ss_pad2 [240]int8
+}
+
+type sockaddrInet struct {
+ Family uint16
+ Port uint16
+ Addr [4]byte /* in_addr */
+ Zero [8]int8
+}
+
+type inetPktinfo struct {
+ Ifindex uint32
+ Spec_dst [4]byte /* in_addr */
+ Addr [4]byte /* in_addr */
+}
+
+type ipMreq struct {
+ Multiaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type ipMreqSource struct {
+ Multiaddr [4]byte /* in_addr */
+ Sourceaddr [4]byte /* in_addr */
+ Interface [4]byte /* in_addr */
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [256]byte
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [256]byte
+ Pad_cgo_1 [256]byte
+}
diff --git a/vendor/golang.org/x/net/ipv6/batch.go b/vendor/golang.org/x/net/ipv6/batch.go
new file mode 100644
index 0000000..2ccb984
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/batch.go
@@ -0,0 +1,116 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+import (
+ "net"
+ "runtime"
+
+ "golang.org/x/net/internal/socket"
+)
+
+// BUG(mikio): On Windows, the ReadBatch and WriteBatch methods of
+// PacketConn are not implemented.
+
+// A Message represents an IO message.
+//
+// type Message struct {
+// Buffers [][]byte
+// OOB []byte
+// Addr net.Addr
+// N int
+// NN int
+// Flags int
+// }
+//
+// The Buffers fields represents a list of contiguous buffers, which
+// can be used for vectored IO, for example, putting a header and a
+// payload in each slice.
+// When writing, the Buffers field must contain at least one byte to
+// write.
+// When reading, the Buffers field will always contain a byte to read.
+//
+// The OOB field contains protocol-specific control or miscellaneous
+// ancillary data known as out-of-band data.
+// It can be nil when not required.
+//
+// The Addr field specifies a destination address when writing.
+// It can be nil when the underlying protocol of the endpoint uses
+// connection-oriented communication.
+// After a successful read, it may contain the source address on the
+// received packet.
+//
+// The N field indicates the number of bytes read or written from/to
+// Buffers.
+//
+// The NN field indicates the number of bytes read or written from/to
+// OOB.
+//
+// The Flags field contains protocol-specific information on the
+// received message.
+type Message = socket.Message
+
+// ReadBatch reads a batch of messages.
+//
+// The provided flags is a set of platform-dependent flags, such as
+// syscall.MSG_PEEK.
+//
+// On a successful read it returns the number of messages received, up
+// to len(ms).
+//
+// On Linux, a batch read will be optimized.
+// On other platforms, this method will read only a single message.
+func (c *payloadHandler) ReadBatch(ms []Message, flags int) (int, error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ switch runtime.GOOS {
+ case "linux":
+ n, err := c.RecvMsgs([]socket.Message(ms), flags)
+ if err != nil {
+ err = &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
+ }
+ return n, err
+ default:
+ n := 1
+ err := c.RecvMsg(&ms[0], flags)
+ if err != nil {
+ n = 0
+ err = &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
+ }
+ return n, err
+ }
+}
+
+// WriteBatch writes a batch of messages.
+//
+// The provided flags is a set of platform-dependent flags, such as
+// syscall.MSG_DONTROUTE.
+//
+// It returns the number of messages written on a successful write.
+//
+// On Linux, a batch write will be optimized.
+// On other platforms, this method will write only a single message.
+func (c *payloadHandler) WriteBatch(ms []Message, flags int) (int, error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ switch runtime.GOOS {
+ case "linux":
+ n, err := c.SendMsgs([]socket.Message(ms), flags)
+ if err != nil {
+ err = &net.OpError{Op: "write", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
+ }
+ return n, err
+ default:
+ n := 1
+ err := c.SendMsg(&ms[0], flags)
+ if err != nil {
+ n = 0
+ err = &net.OpError{Op: "write", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
+ }
+ return n, err
+ }
+}
diff --git a/vendor/golang.org/x/net/ipv6/control.go b/vendor/golang.org/x/net/ipv6/control.go
new file mode 100644
index 0000000..2da6444
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/control.go
@@ -0,0 +1,187 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+import (
+ "fmt"
+ "net"
+ "sync"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+// Note that RFC 3542 obsoletes RFC 2292 but OS X Snow Leopard and the
+// former still support RFC 2292 only. Please be aware that almost
+// all protocol implementations prohibit using a combination of RFC
+// 2292 and RFC 3542 for some practical reasons.
+
+type rawOpt struct {
+ sync.RWMutex
+ cflags ControlFlags
+}
+
+func (c *rawOpt) set(f ControlFlags) { c.cflags |= f }
+func (c *rawOpt) clear(f ControlFlags) { c.cflags &^= f }
+func (c *rawOpt) isset(f ControlFlags) bool { return c.cflags&f != 0 }
+
+// A ControlFlags represents per packet basis IP-level socket option
+// control flags.
+type ControlFlags uint
+
+const (
+ FlagTrafficClass ControlFlags = 1 << iota // pass the traffic class on the received packet
+ FlagHopLimit // pass the hop limit on the received packet
+ FlagSrc // pass the source address on the received packet
+ FlagDst // pass the destination address on the received packet
+ FlagInterface // pass the interface index on the received packet
+ FlagPathMTU // pass the path MTU on the received packet path
+)
+
+const flagPacketInfo = FlagDst | FlagInterface
+
+// A ControlMessage represents per packet basis IP-level socket
+// options.
+type ControlMessage struct {
+ // Receiving socket options: SetControlMessage allows to
+ // receive the options from the protocol stack using ReadFrom
+ // method of PacketConn.
+ //
+ // Specifying socket options: ControlMessage for WriteTo
+ // method of PacketConn allows to send the options to the
+ // protocol stack.
+ //
+ TrafficClass int // traffic class, must be 1 <= value <= 255 when specifying
+ HopLimit int // hop limit, must be 1 <= value <= 255 when specifying
+ Src net.IP // source address, specifying only
+ Dst net.IP // destination address, receiving only
+ IfIndex int // interface index, must be 1 <= value when specifying
+ NextHop net.IP // next hop address, specifying only
+ MTU int // path MTU, receiving only
+}
+
+func (cm *ControlMessage) String() string {
+ if cm == nil {
+ return ""
+ }
+ return fmt.Sprintf("tclass=%#x hoplim=%d src=%v dst=%v ifindex=%d nexthop=%v mtu=%d", cm.TrafficClass, cm.HopLimit, cm.Src, cm.Dst, cm.IfIndex, cm.NextHop, cm.MTU)
+}
+
+// Marshal returns the binary encoding of cm.
+func (cm *ControlMessage) Marshal() []byte {
+ if cm == nil {
+ return nil
+ }
+ var l int
+ tclass := false
+ if ctlOpts[ctlTrafficClass].name > 0 && cm.TrafficClass > 0 {
+ tclass = true
+ l += socket.ControlMessageSpace(ctlOpts[ctlTrafficClass].length)
+ }
+ hoplimit := false
+ if ctlOpts[ctlHopLimit].name > 0 && cm.HopLimit > 0 {
+ hoplimit = true
+ l += socket.ControlMessageSpace(ctlOpts[ctlHopLimit].length)
+ }
+ pktinfo := false
+ if ctlOpts[ctlPacketInfo].name > 0 && (cm.Src.To16() != nil && cm.Src.To4() == nil || cm.IfIndex > 0) {
+ pktinfo = true
+ l += socket.ControlMessageSpace(ctlOpts[ctlPacketInfo].length)
+ }
+ nexthop := false
+ if ctlOpts[ctlNextHop].name > 0 && cm.NextHop.To16() != nil && cm.NextHop.To4() == nil {
+ nexthop = true
+ l += socket.ControlMessageSpace(ctlOpts[ctlNextHop].length)
+ }
+ var b []byte
+ if l > 0 {
+ b = make([]byte, l)
+ bb := b
+ if tclass {
+ bb = ctlOpts[ctlTrafficClass].marshal(bb, cm)
+ }
+ if hoplimit {
+ bb = ctlOpts[ctlHopLimit].marshal(bb, cm)
+ }
+ if pktinfo {
+ bb = ctlOpts[ctlPacketInfo].marshal(bb, cm)
+ }
+ if nexthop {
+ bb = ctlOpts[ctlNextHop].marshal(bb, cm)
+ }
+ }
+ return b
+}
+
+// Parse parses b as a control message and stores the result in cm.
+func (cm *ControlMessage) Parse(b []byte) error {
+ ms, err := socket.ControlMessage(b).Parse()
+ if err != nil {
+ return err
+ }
+ for _, m := range ms {
+ lvl, typ, l, err := m.ParseHeader()
+ if err != nil {
+ return err
+ }
+ if lvl != iana.ProtocolIPv6 {
+ continue
+ }
+ switch {
+ case typ == ctlOpts[ctlTrafficClass].name && l >= ctlOpts[ctlTrafficClass].length:
+ ctlOpts[ctlTrafficClass].parse(cm, m.Data(l))
+ case typ == ctlOpts[ctlHopLimit].name && l >= ctlOpts[ctlHopLimit].length:
+ ctlOpts[ctlHopLimit].parse(cm, m.Data(l))
+ case typ == ctlOpts[ctlPacketInfo].name && l >= ctlOpts[ctlPacketInfo].length:
+ ctlOpts[ctlPacketInfo].parse(cm, m.Data(l))
+ case typ == ctlOpts[ctlPathMTU].name && l >= ctlOpts[ctlPathMTU].length:
+ ctlOpts[ctlPathMTU].parse(cm, m.Data(l))
+ }
+ }
+ return nil
+}
+
+// NewControlMessage returns a new control message.
+//
+// The returned message is large enough for options specified by cf.
+func NewControlMessage(cf ControlFlags) []byte {
+ opt := rawOpt{cflags: cf}
+ var l int
+ if opt.isset(FlagTrafficClass) && ctlOpts[ctlTrafficClass].name > 0 {
+ l += socket.ControlMessageSpace(ctlOpts[ctlTrafficClass].length)
+ }
+ if opt.isset(FlagHopLimit) && ctlOpts[ctlHopLimit].name > 0 {
+ l += socket.ControlMessageSpace(ctlOpts[ctlHopLimit].length)
+ }
+ if opt.isset(flagPacketInfo) && ctlOpts[ctlPacketInfo].name > 0 {
+ l += socket.ControlMessageSpace(ctlOpts[ctlPacketInfo].length)
+ }
+ if opt.isset(FlagPathMTU) && ctlOpts[ctlPathMTU].name > 0 {
+ l += socket.ControlMessageSpace(ctlOpts[ctlPathMTU].length)
+ }
+ var b []byte
+ if l > 0 {
+ b = make([]byte, l)
+ }
+ return b
+}
+
+// Ancillary data socket options
+const (
+ ctlTrafficClass = iota // header field
+ ctlHopLimit // header field
+ ctlPacketInfo // inbound or outbound packet path
+ ctlNextHop // nexthop
+ ctlPathMTU // path mtu
+ ctlMax
+)
+
+// A ctlOpt represents a binding for ancillary data socket option.
+type ctlOpt struct {
+ name int // option name, must be equal or greater than 1
+ length int // option length
+ marshal func([]byte, *ControlMessage) []byte
+ parse func(*ControlMessage, []byte)
+}
diff --git a/vendor/golang.org/x/net/ipv6/control_rfc2292_unix.go b/vendor/golang.org/x/net/ipv6/control_rfc2292_unix.go
new file mode 100644
index 0000000..9fd9eb1
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/control_rfc2292_unix.go
@@ -0,0 +1,48 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build darwin
+
+package ipv6
+
+import (
+ "unsafe"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+func marshal2292HopLimit(b []byte, cm *ControlMessage) []byte {
+ m := socket.ControlMessage(b)
+ m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_2292HOPLIMIT, 4)
+ if cm != nil {
+ socket.NativeEndian.PutUint32(m.Data(4), uint32(cm.HopLimit))
+ }
+ return m.Next(4)
+}
+
+func marshal2292PacketInfo(b []byte, cm *ControlMessage) []byte {
+ m := socket.ControlMessage(b)
+ m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_2292PKTINFO, sizeofInet6Pktinfo)
+ if cm != nil {
+ pi := (*inet6Pktinfo)(unsafe.Pointer(&m.Data(sizeofInet6Pktinfo)[0]))
+ if ip := cm.Src.To16(); ip != nil && ip.To4() == nil {
+ copy(pi.Addr[:], ip)
+ }
+ if cm.IfIndex > 0 {
+ pi.setIfindex(cm.IfIndex)
+ }
+ }
+ return m.Next(sizeofInet6Pktinfo)
+}
+
+func marshal2292NextHop(b []byte, cm *ControlMessage) []byte {
+ m := socket.ControlMessage(b)
+ m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_2292NEXTHOP, sizeofSockaddrInet6)
+ if cm != nil {
+ sa := (*sockaddrInet6)(unsafe.Pointer(&m.Data(sizeofSockaddrInet6)[0]))
+ sa.setSockaddr(cm.NextHop, cm.IfIndex)
+ }
+ return m.Next(sizeofSockaddrInet6)
+}
diff --git a/vendor/golang.org/x/net/ipv6/control_rfc3542_unix.go b/vendor/golang.org/x/net/ipv6/control_rfc3542_unix.go
new file mode 100644
index 0000000..8c221b5
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/control_rfc3542_unix.go
@@ -0,0 +1,94 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package ipv6
+
+import (
+ "net"
+ "unsafe"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+func marshalTrafficClass(b []byte, cm *ControlMessage) []byte {
+ m := socket.ControlMessage(b)
+ m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_TCLASS, 4)
+ if cm != nil {
+ socket.NativeEndian.PutUint32(m.Data(4), uint32(cm.TrafficClass))
+ }
+ return m.Next(4)
+}
+
+func parseTrafficClass(cm *ControlMessage, b []byte) {
+ cm.TrafficClass = int(socket.NativeEndian.Uint32(b[:4]))
+}
+
+func marshalHopLimit(b []byte, cm *ControlMessage) []byte {
+ m := socket.ControlMessage(b)
+ m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_HOPLIMIT, 4)
+ if cm != nil {
+ socket.NativeEndian.PutUint32(m.Data(4), uint32(cm.HopLimit))
+ }
+ return m.Next(4)
+}
+
+func parseHopLimit(cm *ControlMessage, b []byte) {
+ cm.HopLimit = int(socket.NativeEndian.Uint32(b[:4]))
+}
+
+func marshalPacketInfo(b []byte, cm *ControlMessage) []byte {
+ m := socket.ControlMessage(b)
+ m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_PKTINFO, sizeofInet6Pktinfo)
+ if cm != nil {
+ pi := (*inet6Pktinfo)(unsafe.Pointer(&m.Data(sizeofInet6Pktinfo)[0]))
+ if ip := cm.Src.To16(); ip != nil && ip.To4() == nil {
+ copy(pi.Addr[:], ip)
+ }
+ if cm.IfIndex > 0 {
+ pi.setIfindex(cm.IfIndex)
+ }
+ }
+ return m.Next(sizeofInet6Pktinfo)
+}
+
+func parsePacketInfo(cm *ControlMessage, b []byte) {
+ pi := (*inet6Pktinfo)(unsafe.Pointer(&b[0]))
+ if len(cm.Dst) < net.IPv6len {
+ cm.Dst = make(net.IP, net.IPv6len)
+ }
+ copy(cm.Dst, pi.Addr[:])
+ cm.IfIndex = int(pi.Ifindex)
+}
+
+func marshalNextHop(b []byte, cm *ControlMessage) []byte {
+ m := socket.ControlMessage(b)
+ m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_NEXTHOP, sizeofSockaddrInet6)
+ if cm != nil {
+ sa := (*sockaddrInet6)(unsafe.Pointer(&m.Data(sizeofSockaddrInet6)[0]))
+ sa.setSockaddr(cm.NextHop, cm.IfIndex)
+ }
+ return m.Next(sizeofSockaddrInet6)
+}
+
+func parseNextHop(cm *ControlMessage, b []byte) {
+}
+
+func marshalPathMTU(b []byte, cm *ControlMessage) []byte {
+ m := socket.ControlMessage(b)
+ m.MarshalHeader(iana.ProtocolIPv6, sysIPV6_PATHMTU, sizeofIPv6Mtuinfo)
+ return m.Next(sizeofIPv6Mtuinfo)
+}
+
+func parsePathMTU(cm *ControlMessage, b []byte) {
+ mi := (*ipv6Mtuinfo)(unsafe.Pointer(&b[0]))
+ if len(cm.Dst) < net.IPv6len {
+ cm.Dst = make(net.IP, net.IPv6len)
+ }
+ copy(cm.Dst, mi.Addr.Addr[:])
+ cm.IfIndex = int(mi.Addr.Scope_id)
+ cm.MTU = int(mi.Mtu)
+}
diff --git a/vendor/golang.org/x/net/ipv6/control_stub.go b/vendor/golang.org/x/net/ipv6/control_stub.go
new file mode 100644
index 0000000..1d773cb
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/control_stub.go
@@ -0,0 +1,13 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+
+package ipv6
+
+import "golang.org/x/net/internal/socket"
+
+func setControlMessage(c *socket.Conn, opt *rawOpt, cf ControlFlags, on bool) error {
+ return errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/ipv6/control_unix.go b/vendor/golang.org/x/net/ipv6/control_unix.go
new file mode 100644
index 0000000..0971a00
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/control_unix.go
@@ -0,0 +1,55 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package ipv6
+
+import "golang.org/x/net/internal/socket"
+
+func setControlMessage(c *socket.Conn, opt *rawOpt, cf ControlFlags, on bool) error {
+ opt.Lock()
+ defer opt.Unlock()
+ if so, ok := sockOpts[ssoReceiveTrafficClass]; ok && cf&FlagTrafficClass != 0 {
+ if err := so.SetInt(c, boolint(on)); err != nil {
+ return err
+ }
+ if on {
+ opt.set(FlagTrafficClass)
+ } else {
+ opt.clear(FlagTrafficClass)
+ }
+ }
+ if so, ok := sockOpts[ssoReceiveHopLimit]; ok && cf&FlagHopLimit != 0 {
+ if err := so.SetInt(c, boolint(on)); err != nil {
+ return err
+ }
+ if on {
+ opt.set(FlagHopLimit)
+ } else {
+ opt.clear(FlagHopLimit)
+ }
+ }
+ if so, ok := sockOpts[ssoReceivePacketInfo]; ok && cf&flagPacketInfo != 0 {
+ if err := so.SetInt(c, boolint(on)); err != nil {
+ return err
+ }
+ if on {
+ opt.set(cf & flagPacketInfo)
+ } else {
+ opt.clear(cf & flagPacketInfo)
+ }
+ }
+ if so, ok := sockOpts[ssoReceivePathMTU]; ok && cf&FlagPathMTU != 0 {
+ if err := so.SetInt(c, boolint(on)); err != nil {
+ return err
+ }
+ if on {
+ opt.set(FlagPathMTU)
+ } else {
+ opt.clear(FlagPathMTU)
+ }
+ }
+ return nil
+}
diff --git a/vendor/golang.org/x/net/ipv6/control_windows.go b/vendor/golang.org/x/net/ipv6/control_windows.go
new file mode 100644
index 0000000..8882d81
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/control_windows.go
@@ -0,0 +1,12 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+import "golang.org/x/net/internal/socket"
+
+func setControlMessage(c *socket.Conn, opt *rawOpt, cf ControlFlags, on bool) error {
+ // TODO(mikio): implement this
+ return errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/ipv6/dgramopt.go b/vendor/golang.org/x/net/ipv6/dgramopt.go
new file mode 100644
index 0000000..1f422e7
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/dgramopt.go
@@ -0,0 +1,301 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+import (
+ "net"
+
+ "golang.org/x/net/bpf"
+)
+
+// MulticastHopLimit returns the hop limit field value for outgoing
+// multicast packets.
+func (c *dgramOpt) MulticastHopLimit() (int, error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ so, ok := sockOpts[ssoMulticastHopLimit]
+ if !ok {
+ return 0, errNotImplemented
+ }
+ return so.GetInt(c.Conn)
+}
+
+// SetMulticastHopLimit sets the hop limit field value for future
+// outgoing multicast packets.
+func (c *dgramOpt) SetMulticastHopLimit(hoplim int) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoMulticastHopLimit]
+ if !ok {
+ return errNotImplemented
+ }
+ return so.SetInt(c.Conn, hoplim)
+}
+
+// MulticastInterface returns the default interface for multicast
+// packet transmissions.
+func (c *dgramOpt) MulticastInterface() (*net.Interface, error) {
+ if !c.ok() {
+ return nil, errInvalidConn
+ }
+ so, ok := sockOpts[ssoMulticastInterface]
+ if !ok {
+ return nil, errNotImplemented
+ }
+ return so.getMulticastInterface(c.Conn)
+}
+
+// SetMulticastInterface sets the default interface for future
+// multicast packet transmissions.
+func (c *dgramOpt) SetMulticastInterface(ifi *net.Interface) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoMulticastInterface]
+ if !ok {
+ return errNotImplemented
+ }
+ return so.setMulticastInterface(c.Conn, ifi)
+}
+
+// MulticastLoopback reports whether transmitted multicast packets
+// should be copied and send back to the originator.
+func (c *dgramOpt) MulticastLoopback() (bool, error) {
+ if !c.ok() {
+ return false, errInvalidConn
+ }
+ so, ok := sockOpts[ssoMulticastLoopback]
+ if !ok {
+ return false, errNotImplemented
+ }
+ on, err := so.GetInt(c.Conn)
+ if err != nil {
+ return false, err
+ }
+ return on == 1, nil
+}
+
+// SetMulticastLoopback sets whether transmitted multicast packets
+// should be copied and send back to the originator.
+func (c *dgramOpt) SetMulticastLoopback(on bool) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoMulticastLoopback]
+ if !ok {
+ return errNotImplemented
+ }
+ return so.SetInt(c.Conn, boolint(on))
+}
+
+// JoinGroup joins the group address group on the interface ifi.
+// By default all sources that can cast data to group are accepted.
+// It's possible to mute and unmute data transmission from a specific
+// source by using ExcludeSourceSpecificGroup and
+// IncludeSourceSpecificGroup.
+// JoinGroup uses the system assigned multicast interface when ifi is
+// nil, although this is not recommended because the assignment
+// depends on platforms and sometimes it might require routing
+// configuration.
+func (c *dgramOpt) JoinGroup(ifi *net.Interface, group net.Addr) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoJoinGroup]
+ if !ok {
+ return errNotImplemented
+ }
+ grp := netAddrToIP16(group)
+ if grp == nil {
+ return errMissingAddress
+ }
+ return so.setGroup(c.Conn, ifi, grp)
+}
+
+// LeaveGroup leaves the group address group on the interface ifi
+// regardless of whether the group is any-source group or
+// source-specific group.
+func (c *dgramOpt) LeaveGroup(ifi *net.Interface, group net.Addr) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoLeaveGroup]
+ if !ok {
+ return errNotImplemented
+ }
+ grp := netAddrToIP16(group)
+ if grp == nil {
+ return errMissingAddress
+ }
+ return so.setGroup(c.Conn, ifi, grp)
+}
+
+// JoinSourceSpecificGroup joins the source-specific group comprising
+// group and source on the interface ifi.
+// JoinSourceSpecificGroup uses the system assigned multicast
+// interface when ifi is nil, although this is not recommended because
+// the assignment depends on platforms and sometimes it might require
+// routing configuration.
+func (c *dgramOpt) JoinSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoJoinSourceGroup]
+ if !ok {
+ return errNotImplemented
+ }
+ grp := netAddrToIP16(group)
+ if grp == nil {
+ return errMissingAddress
+ }
+ src := netAddrToIP16(source)
+ if src == nil {
+ return errMissingAddress
+ }
+ return so.setSourceGroup(c.Conn, ifi, grp, src)
+}
+
+// LeaveSourceSpecificGroup leaves the source-specific group on the
+// interface ifi.
+func (c *dgramOpt) LeaveSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoLeaveSourceGroup]
+ if !ok {
+ return errNotImplemented
+ }
+ grp := netAddrToIP16(group)
+ if grp == nil {
+ return errMissingAddress
+ }
+ src := netAddrToIP16(source)
+ if src == nil {
+ return errMissingAddress
+ }
+ return so.setSourceGroup(c.Conn, ifi, grp, src)
+}
+
+// ExcludeSourceSpecificGroup excludes the source-specific group from
+// the already joined any-source groups by JoinGroup on the interface
+// ifi.
+func (c *dgramOpt) ExcludeSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoBlockSourceGroup]
+ if !ok {
+ return errNotImplemented
+ }
+ grp := netAddrToIP16(group)
+ if grp == nil {
+ return errMissingAddress
+ }
+ src := netAddrToIP16(source)
+ if src == nil {
+ return errMissingAddress
+ }
+ return so.setSourceGroup(c.Conn, ifi, grp, src)
+}
+
+// IncludeSourceSpecificGroup includes the excluded source-specific
+// group by ExcludeSourceSpecificGroup again on the interface ifi.
+func (c *dgramOpt) IncludeSourceSpecificGroup(ifi *net.Interface, group, source net.Addr) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoUnblockSourceGroup]
+ if !ok {
+ return errNotImplemented
+ }
+ grp := netAddrToIP16(group)
+ if grp == nil {
+ return errMissingAddress
+ }
+ src := netAddrToIP16(source)
+ if src == nil {
+ return errMissingAddress
+ }
+ return so.setSourceGroup(c.Conn, ifi, grp, src)
+}
+
+// Checksum reports whether the kernel will compute, store or verify a
+// checksum for both incoming and outgoing packets. If on is true, it
+// returns an offset in bytes into the data of where the checksum
+// field is located.
+func (c *dgramOpt) Checksum() (on bool, offset int, err error) {
+ if !c.ok() {
+ return false, 0, errInvalidConn
+ }
+ so, ok := sockOpts[ssoChecksum]
+ if !ok {
+ return false, 0, errNotImplemented
+ }
+ offset, err = so.GetInt(c.Conn)
+ if err != nil {
+ return false, 0, err
+ }
+ if offset < 0 {
+ return false, 0, nil
+ }
+ return true, offset, nil
+}
+
+// SetChecksum enables the kernel checksum processing. If on is ture,
+// the offset should be an offset in bytes into the data of where the
+// checksum field is located.
+func (c *dgramOpt) SetChecksum(on bool, offset int) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoChecksum]
+ if !ok {
+ return errNotImplemented
+ }
+ if !on {
+ offset = -1
+ }
+ return so.SetInt(c.Conn, offset)
+}
+
+// ICMPFilter returns an ICMP filter.
+func (c *dgramOpt) ICMPFilter() (*ICMPFilter, error) {
+ if !c.ok() {
+ return nil, errInvalidConn
+ }
+ so, ok := sockOpts[ssoICMPFilter]
+ if !ok {
+ return nil, errNotImplemented
+ }
+ return so.getICMPFilter(c.Conn)
+}
+
+// SetICMPFilter deploys the ICMP filter.
+func (c *dgramOpt) SetICMPFilter(f *ICMPFilter) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoICMPFilter]
+ if !ok {
+ return errNotImplemented
+ }
+ return so.setICMPFilter(c.Conn, f)
+}
+
+// SetBPF attaches a BPF program to the connection.
+//
+// Only supported on Linux.
+func (c *dgramOpt) SetBPF(filter []bpf.RawInstruction) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoAttachFilter]
+ if !ok {
+ return errNotImplemented
+ }
+ return so.setBPF(c.Conn, filter)
+}
diff --git a/vendor/golang.org/x/net/ipv6/doc.go b/vendor/golang.org/x/net/ipv6/doc.go
new file mode 100644
index 0000000..e0be9d5
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/doc.go
@@ -0,0 +1,243 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package ipv6 implements IP-level socket options for the Internet
+// Protocol version 6.
+//
+// The package provides IP-level socket options that allow
+// manipulation of IPv6 facilities.
+//
+// The IPv6 protocol is defined in RFC 8200.
+// Socket interface extensions are defined in RFC 3493, RFC 3542 and
+// RFC 3678.
+// MLDv1 and MLDv2 are defined in RFC 2710 and RFC 3810.
+// Source-specific multicast is defined in RFC 4607.
+//
+// On Darwin, this package requires OS X Mavericks version 10.9 or
+// above, or equivalent.
+//
+//
+// Unicasting
+//
+// The options for unicasting are available for net.TCPConn,
+// net.UDPConn and net.IPConn which are created as network connections
+// that use the IPv6 transport. When a single TCP connection carrying
+// a data flow of multiple packets needs to indicate the flow is
+// important, Conn is used to set the traffic class field on the IPv6
+// header for each packet.
+//
+// ln, err := net.Listen("tcp6", "[::]:1024")
+// if err != nil {
+// // error handling
+// }
+// defer ln.Close()
+// for {
+// c, err := ln.Accept()
+// if err != nil {
+// // error handling
+// }
+// go func(c net.Conn) {
+// defer c.Close()
+//
+// The outgoing packets will be labeled DiffServ assured forwarding
+// class 1 low drop precedence, known as AF11 packets.
+//
+// if err := ipv6.NewConn(c).SetTrafficClass(0x28); err != nil {
+// // error handling
+// }
+// if _, err := c.Write(data); err != nil {
+// // error handling
+// }
+// }(c)
+// }
+//
+//
+// Multicasting
+//
+// The options for multicasting are available for net.UDPConn and
+// net.IPConn which are created as network connections that use the
+// IPv6 transport. A few network facilities must be prepared before
+// you begin multicasting, at a minimum joining network interfaces and
+// multicast groups.
+//
+// en0, err := net.InterfaceByName("en0")
+// if err != nil {
+// // error handling
+// }
+// en1, err := net.InterfaceByIndex(911)
+// if err != nil {
+// // error handling
+// }
+// group := net.ParseIP("ff02::114")
+//
+// First, an application listens to an appropriate address with an
+// appropriate service port.
+//
+// c, err := net.ListenPacket("udp6", "[::]:1024")
+// if err != nil {
+// // error handling
+// }
+// defer c.Close()
+//
+// Second, the application joins multicast groups, starts listening to
+// the groups on the specified network interfaces. Note that the
+// service port for transport layer protocol does not matter with this
+// operation as joining groups affects only network and link layer
+// protocols, such as IPv6 and Ethernet.
+//
+// p := ipv6.NewPacketConn(c)
+// if err := p.JoinGroup(en0, &net.UDPAddr{IP: group}); err != nil {
+// // error handling
+// }
+// if err := p.JoinGroup(en1, &net.UDPAddr{IP: group}); err != nil {
+// // error handling
+// }
+//
+// The application might set per packet control message transmissions
+// between the protocol stack within the kernel. When the application
+// needs a destination address on an incoming packet,
+// SetControlMessage of PacketConn is used to enable control message
+// transmissions.
+//
+// if err := p.SetControlMessage(ipv6.FlagDst, true); err != nil {
+// // error handling
+// }
+//
+// The application could identify whether the received packets are
+// of interest by using the control message that contains the
+// destination address of the received packet.
+//
+// b := make([]byte, 1500)
+// for {
+// n, rcm, src, err := p.ReadFrom(b)
+// if err != nil {
+// // error handling
+// }
+// if rcm.Dst.IsMulticast() {
+// if rcm.Dst.Equal(group) {
+// // joined group, do something
+// } else {
+// // unknown group, discard
+// continue
+// }
+// }
+//
+// The application can also send both unicast and multicast packets.
+//
+// p.SetTrafficClass(0x0)
+// p.SetHopLimit(16)
+// if _, err := p.WriteTo(data[:n], nil, src); err != nil {
+// // error handling
+// }
+// dst := &net.UDPAddr{IP: group, Port: 1024}
+// wcm := ipv6.ControlMessage{TrafficClass: 0xe0, HopLimit: 1}
+// for _, ifi := range []*net.Interface{en0, en1} {
+// wcm.IfIndex = ifi.Index
+// if _, err := p.WriteTo(data[:n], &wcm, dst); err != nil {
+// // error handling
+// }
+// }
+// }
+//
+//
+// More multicasting
+//
+// An application that uses PacketConn may join multiple multicast
+// groups. For example, a UDP listener with port 1024 might join two
+// different groups across over two different network interfaces by
+// using:
+//
+// c, err := net.ListenPacket("udp6", "[::]:1024")
+// if err != nil {
+// // error handling
+// }
+// defer c.Close()
+// p := ipv6.NewPacketConn(c)
+// if err := p.JoinGroup(en0, &net.UDPAddr{IP: net.ParseIP("ff02::1:114")}); err != nil {
+// // error handling
+// }
+// if err := p.JoinGroup(en0, &net.UDPAddr{IP: net.ParseIP("ff02::2:114")}); err != nil {
+// // error handling
+// }
+// if err := p.JoinGroup(en1, &net.UDPAddr{IP: net.ParseIP("ff02::2:114")}); err != nil {
+// // error handling
+// }
+//
+// It is possible for multiple UDP listeners that listen on the same
+// UDP port to join the same multicast group. The net package will
+// provide a socket that listens to a wildcard address with reusable
+// UDP port when an appropriate multicast address prefix is passed to
+// the net.ListenPacket or net.ListenUDP.
+//
+// c1, err := net.ListenPacket("udp6", "[ff02::]:1024")
+// if err != nil {
+// // error handling
+// }
+// defer c1.Close()
+// c2, err := net.ListenPacket("udp6", "[ff02::]:1024")
+// if err != nil {
+// // error handling
+// }
+// defer c2.Close()
+// p1 := ipv6.NewPacketConn(c1)
+// if err := p1.JoinGroup(en0, &net.UDPAddr{IP: net.ParseIP("ff02::114")}); err != nil {
+// // error handling
+// }
+// p2 := ipv6.NewPacketConn(c2)
+// if err := p2.JoinGroup(en0, &net.UDPAddr{IP: net.ParseIP("ff02::114")}); err != nil {
+// // error handling
+// }
+//
+// Also it is possible for the application to leave or rejoin a
+// multicast group on the network interface.
+//
+// if err := p.LeaveGroup(en0, &net.UDPAddr{IP: net.ParseIP("ff02::114")}); err != nil {
+// // error handling
+// }
+// if err := p.JoinGroup(en0, &net.UDPAddr{IP: net.ParseIP("ff01::114")}); err != nil {
+// // error handling
+// }
+//
+//
+// Source-specific multicasting
+//
+// An application that uses PacketConn on MLDv2 supported platform is
+// able to join source-specific multicast groups.
+// The application may use JoinSourceSpecificGroup and
+// LeaveSourceSpecificGroup for the operation known as "include" mode,
+//
+// ssmgroup := net.UDPAddr{IP: net.ParseIP("ff32::8000:9")}
+// ssmsource := net.UDPAddr{IP: net.ParseIP("fe80::cafe")}
+// if err := p.JoinSourceSpecificGroup(en0, &ssmgroup, &ssmsource); err != nil {
+// // error handling
+// }
+// if err := p.LeaveSourceSpecificGroup(en0, &ssmgroup, &ssmsource); err != nil {
+// // error handling
+// }
+//
+// or JoinGroup, ExcludeSourceSpecificGroup,
+// IncludeSourceSpecificGroup and LeaveGroup for the operation known
+// as "exclude" mode.
+//
+// exclsource := net.UDPAddr{IP: net.ParseIP("fe80::dead")}
+// if err := p.JoinGroup(en0, &ssmgroup); err != nil {
+// // error handling
+// }
+// if err := p.ExcludeSourceSpecificGroup(en0, &ssmgroup, &exclsource); err != nil {
+// // error handling
+// }
+// if err := p.LeaveGroup(en0, &ssmgroup); err != nil {
+// // error handling
+// }
+//
+// Note that it depends on each platform implementation what happens
+// when an application which runs on MLDv2 unsupported platform uses
+// JoinSourceSpecificGroup and LeaveSourceSpecificGroup.
+// In general the platform tries to fall back to conversations using
+// MLDv1 and starts to listen to multicast traffic.
+// In the fallback case, ExcludeSourceSpecificGroup and
+// IncludeSourceSpecificGroup may return an error.
+package ipv6 // import "golang.org/x/net/ipv6"
+
+// BUG(mikio): This package is not implemented on JS, NaCl and Plan 9.
diff --git a/vendor/golang.org/x/net/ipv6/endpoint.go b/vendor/golang.org/x/net/ipv6/endpoint.go
new file mode 100644
index 0000000..f534a0b
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/endpoint.go
@@ -0,0 +1,127 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+import (
+ "net"
+ "time"
+
+ "golang.org/x/net/internal/socket"
+)
+
+// BUG(mikio): On Windows, the JoinSourceSpecificGroup,
+// LeaveSourceSpecificGroup, ExcludeSourceSpecificGroup and
+// IncludeSourceSpecificGroup methods of PacketConn are not
+// implemented.
+
+// A Conn represents a network endpoint that uses IPv6 transport.
+// It allows to set basic IP-level socket options such as traffic
+// class and hop limit.
+type Conn struct {
+ genericOpt
+}
+
+type genericOpt struct {
+ *socket.Conn
+}
+
+func (c *genericOpt) ok() bool { return c != nil && c.Conn != nil }
+
+// PathMTU returns a path MTU value for the destination associated
+// with the endpoint.
+func (c *Conn) PathMTU() (int, error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ so, ok := sockOpts[ssoPathMTU]
+ if !ok {
+ return 0, errNotImplemented
+ }
+ _, mtu, err := so.getMTUInfo(c.Conn)
+ if err != nil {
+ return 0, err
+ }
+ return mtu, nil
+}
+
+// NewConn returns a new Conn.
+func NewConn(c net.Conn) *Conn {
+ cc, _ := socket.NewConn(c)
+ return &Conn{
+ genericOpt: genericOpt{Conn: cc},
+ }
+}
+
+// A PacketConn represents a packet network endpoint that uses IPv6
+// transport. It is used to control several IP-level socket options
+// including IPv6 header manipulation. It also provides datagram
+// based network I/O methods specific to the IPv6 and higher layer
+// protocols such as OSPF, GRE, and UDP.
+type PacketConn struct {
+ genericOpt
+ dgramOpt
+ payloadHandler
+}
+
+type dgramOpt struct {
+ *socket.Conn
+}
+
+func (c *dgramOpt) ok() bool { return c != nil && c.Conn != nil }
+
+// SetControlMessage allows to receive the per packet basis IP-level
+// socket options.
+func (c *PacketConn) SetControlMessage(cf ControlFlags, on bool) error {
+ if !c.payloadHandler.ok() {
+ return errInvalidConn
+ }
+ return setControlMessage(c.dgramOpt.Conn, &c.payloadHandler.rawOpt, cf, on)
+}
+
+// SetDeadline sets the read and write deadlines associated with the
+// endpoint.
+func (c *PacketConn) SetDeadline(t time.Time) error {
+ if !c.payloadHandler.ok() {
+ return errInvalidConn
+ }
+ return c.payloadHandler.SetDeadline(t)
+}
+
+// SetReadDeadline sets the read deadline associated with the
+// endpoint.
+func (c *PacketConn) SetReadDeadline(t time.Time) error {
+ if !c.payloadHandler.ok() {
+ return errInvalidConn
+ }
+ return c.payloadHandler.SetReadDeadline(t)
+}
+
+// SetWriteDeadline sets the write deadline associated with the
+// endpoint.
+func (c *PacketConn) SetWriteDeadline(t time.Time) error {
+ if !c.payloadHandler.ok() {
+ return errInvalidConn
+ }
+ return c.payloadHandler.SetWriteDeadline(t)
+}
+
+// Close closes the endpoint.
+func (c *PacketConn) Close() error {
+ if !c.payloadHandler.ok() {
+ return errInvalidConn
+ }
+ return c.payloadHandler.Close()
+}
+
+// NewPacketConn returns a new PacketConn using c as its underlying
+// transport.
+func NewPacketConn(c net.PacketConn) *PacketConn {
+ cc, _ := socket.NewConn(c.(net.Conn))
+ return &PacketConn{
+ genericOpt: genericOpt{Conn: cc},
+ dgramOpt: dgramOpt{Conn: cc},
+ payloadHandler: payloadHandler{PacketConn: c, Conn: cc},
+ }
+}
diff --git a/vendor/golang.org/x/net/ipv6/genericopt.go b/vendor/golang.org/x/net/ipv6/genericopt.go
new file mode 100644
index 0000000..0326aed
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/genericopt.go
@@ -0,0 +1,56 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+// TrafficClass returns the traffic class field value for outgoing
+// packets.
+func (c *genericOpt) TrafficClass() (int, error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ so, ok := sockOpts[ssoTrafficClass]
+ if !ok {
+ return 0, errNotImplemented
+ }
+ return so.GetInt(c.Conn)
+}
+
+// SetTrafficClass sets the traffic class field value for future
+// outgoing packets.
+func (c *genericOpt) SetTrafficClass(tclass int) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoTrafficClass]
+ if !ok {
+ return errNotImplemented
+ }
+ return so.SetInt(c.Conn, tclass)
+}
+
+// HopLimit returns the hop limit field value for outgoing packets.
+func (c *genericOpt) HopLimit() (int, error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ so, ok := sockOpts[ssoHopLimit]
+ if !ok {
+ return 0, errNotImplemented
+ }
+ return so.GetInt(c.Conn)
+}
+
+// SetHopLimit sets the hop limit field value for future outgoing
+// packets.
+func (c *genericOpt) SetHopLimit(hoplim int) error {
+ if !c.ok() {
+ return errInvalidConn
+ }
+ so, ok := sockOpts[ssoHopLimit]
+ if !ok {
+ return errNotImplemented
+ }
+ return so.SetInt(c.Conn, hoplim)
+}
diff --git a/vendor/golang.org/x/net/ipv6/header.go b/vendor/golang.org/x/net/ipv6/header.go
new file mode 100644
index 0000000..e05cb08
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/header.go
@@ -0,0 +1,55 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+import (
+ "encoding/binary"
+ "fmt"
+ "net"
+)
+
+const (
+ Version = 6 // protocol version
+ HeaderLen = 40 // header length
+)
+
+// A Header represents an IPv6 base header.
+type Header struct {
+ Version int // protocol version
+ TrafficClass int // traffic class
+ FlowLabel int // flow label
+ PayloadLen int // payload length
+ NextHeader int // next header
+ HopLimit int // hop limit
+ Src net.IP // source address
+ Dst net.IP // destination address
+}
+
+func (h *Header) String() string {
+ if h == nil {
+ return ""
+ }
+ return fmt.Sprintf("ver=%d tclass=%#x flowlbl=%#x payloadlen=%d nxthdr=%d hoplim=%d src=%v dst=%v", h.Version, h.TrafficClass, h.FlowLabel, h.PayloadLen, h.NextHeader, h.HopLimit, h.Src, h.Dst)
+}
+
+// ParseHeader parses b as an IPv6 base header.
+func ParseHeader(b []byte) (*Header, error) {
+ if len(b) < HeaderLen {
+ return nil, errHeaderTooShort
+ }
+ h := &Header{
+ Version: int(b[0]) >> 4,
+ TrafficClass: int(b[0]&0x0f)<<4 | int(b[1])>>4,
+ FlowLabel: int(b[1]&0x0f)<<16 | int(b[2])<<8 | int(b[3]),
+ PayloadLen: int(binary.BigEndian.Uint16(b[4:6])),
+ NextHeader: int(b[6]),
+ HopLimit: int(b[7]),
+ }
+ h.Src = make(net.IP, net.IPv6len)
+ copy(h.Src, b[8:24])
+ h.Dst = make(net.IP, net.IPv6len)
+ copy(h.Dst, b[24:40])
+ return h, nil
+}
diff --git a/vendor/golang.org/x/net/ipv6/helper.go b/vendor/golang.org/x/net/ipv6/helper.go
new file mode 100644
index 0000000..f767b1f
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/helper.go
@@ -0,0 +1,59 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+import (
+ "errors"
+ "net"
+ "runtime"
+)
+
+var (
+ errInvalidConn = errors.New("invalid connection")
+ errMissingAddress = errors.New("missing address")
+ errHeaderTooShort = errors.New("header too short")
+ errInvalidConnType = errors.New("invalid conn type")
+ errNoSuchInterface = errors.New("no such interface")
+ errNotImplemented = errors.New("not implemented on " + runtime.GOOS + "/" + runtime.GOARCH)
+)
+
+func boolint(b bool) int {
+ if b {
+ return 1
+ }
+ return 0
+}
+
+func netAddrToIP16(a net.Addr) net.IP {
+ switch v := a.(type) {
+ case *net.UDPAddr:
+ if ip := v.IP.To16(); ip != nil && ip.To4() == nil {
+ return ip
+ }
+ case *net.IPAddr:
+ if ip := v.IP.To16(); ip != nil && ip.To4() == nil {
+ return ip
+ }
+ }
+ return nil
+}
+
+func opAddr(a net.Addr) net.Addr {
+ switch a.(type) {
+ case *net.TCPAddr:
+ if a == nil {
+ return nil
+ }
+ case *net.UDPAddr:
+ if a == nil {
+ return nil
+ }
+ case *net.IPAddr:
+ if a == nil {
+ return nil
+ }
+ }
+ return a
+}
diff --git a/vendor/golang.org/x/net/ipv6/iana.go b/vendor/golang.org/x/net/ipv6/iana.go
new file mode 100644
index 0000000..32db1aa
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/iana.go
@@ -0,0 +1,86 @@
+// go generate gen.go
+// Code generated by the command above; DO NOT EDIT.
+
+package ipv6
+
+// Internet Control Message Protocol version 6 (ICMPv6) Parameters, Updated: 2018-03-09
+const (
+ ICMPTypeDestinationUnreachable ICMPType = 1 // Destination Unreachable
+ ICMPTypePacketTooBig ICMPType = 2 // Packet Too Big
+ ICMPTypeTimeExceeded ICMPType = 3 // Time Exceeded
+ ICMPTypeParameterProblem ICMPType = 4 // Parameter Problem
+ ICMPTypeEchoRequest ICMPType = 128 // Echo Request
+ ICMPTypeEchoReply ICMPType = 129 // Echo Reply
+ ICMPTypeMulticastListenerQuery ICMPType = 130 // Multicast Listener Query
+ ICMPTypeMulticastListenerReport ICMPType = 131 // Multicast Listener Report
+ ICMPTypeMulticastListenerDone ICMPType = 132 // Multicast Listener Done
+ ICMPTypeRouterSolicitation ICMPType = 133 // Router Solicitation
+ ICMPTypeRouterAdvertisement ICMPType = 134 // Router Advertisement
+ ICMPTypeNeighborSolicitation ICMPType = 135 // Neighbor Solicitation
+ ICMPTypeNeighborAdvertisement ICMPType = 136 // Neighbor Advertisement
+ ICMPTypeRedirect ICMPType = 137 // Redirect Message
+ ICMPTypeRouterRenumbering ICMPType = 138 // Router Renumbering
+ ICMPTypeNodeInformationQuery ICMPType = 139 // ICMP Node Information Query
+ ICMPTypeNodeInformationResponse ICMPType = 140 // ICMP Node Information Response
+ ICMPTypeInverseNeighborDiscoverySolicitation ICMPType = 141 // Inverse Neighbor Discovery Solicitation Message
+ ICMPTypeInverseNeighborDiscoveryAdvertisement ICMPType = 142 // Inverse Neighbor Discovery Advertisement Message
+ ICMPTypeVersion2MulticastListenerReport ICMPType = 143 // Version 2 Multicast Listener Report
+ ICMPTypeHomeAgentAddressDiscoveryRequest ICMPType = 144 // Home Agent Address Discovery Request Message
+ ICMPTypeHomeAgentAddressDiscoveryReply ICMPType = 145 // Home Agent Address Discovery Reply Message
+ ICMPTypeMobilePrefixSolicitation ICMPType = 146 // Mobile Prefix Solicitation
+ ICMPTypeMobilePrefixAdvertisement ICMPType = 147 // Mobile Prefix Advertisement
+ ICMPTypeCertificationPathSolicitation ICMPType = 148 // Certification Path Solicitation Message
+ ICMPTypeCertificationPathAdvertisement ICMPType = 149 // Certification Path Advertisement Message
+ ICMPTypeMulticastRouterAdvertisement ICMPType = 151 // Multicast Router Advertisement
+ ICMPTypeMulticastRouterSolicitation ICMPType = 152 // Multicast Router Solicitation
+ ICMPTypeMulticastRouterTermination ICMPType = 153 // Multicast Router Termination
+ ICMPTypeFMIPv6 ICMPType = 154 // FMIPv6 Messages
+ ICMPTypeRPLControl ICMPType = 155 // RPL Control Message
+ ICMPTypeILNPv6LocatorUpdate ICMPType = 156 // ILNPv6 Locator Update Message
+ ICMPTypeDuplicateAddressRequest ICMPType = 157 // Duplicate Address Request
+ ICMPTypeDuplicateAddressConfirmation ICMPType = 158 // Duplicate Address Confirmation
+ ICMPTypeMPLControl ICMPType = 159 // MPL Control Message
+ ICMPTypeExtendedEchoRequest ICMPType = 160 // Extended Echo Request
+ ICMPTypeExtendedEchoReply ICMPType = 161 // Extended Echo Reply
+)
+
+// Internet Control Message Protocol version 6 (ICMPv6) Parameters, Updated: 2018-03-09
+var icmpTypes = map[ICMPType]string{
+ 1: "destination unreachable",
+ 2: "packet too big",
+ 3: "time exceeded",
+ 4: "parameter problem",
+ 128: "echo request",
+ 129: "echo reply",
+ 130: "multicast listener query",
+ 131: "multicast listener report",
+ 132: "multicast listener done",
+ 133: "router solicitation",
+ 134: "router advertisement",
+ 135: "neighbor solicitation",
+ 136: "neighbor advertisement",
+ 137: "redirect message",
+ 138: "router renumbering",
+ 139: "icmp node information query",
+ 140: "icmp node information response",
+ 141: "inverse neighbor discovery solicitation message",
+ 142: "inverse neighbor discovery advertisement message",
+ 143: "version 2 multicast listener report",
+ 144: "home agent address discovery request message",
+ 145: "home agent address discovery reply message",
+ 146: "mobile prefix solicitation",
+ 147: "mobile prefix advertisement",
+ 148: "certification path solicitation message",
+ 149: "certification path advertisement message",
+ 151: "multicast router advertisement",
+ 152: "multicast router solicitation",
+ 153: "multicast router termination",
+ 154: "fmipv6 messages",
+ 155: "rpl control message",
+ 156: "ilnpv6 locator update message",
+ 157: "duplicate address request",
+ 158: "duplicate address confirmation",
+ 159: "mpl control message",
+ 160: "extended echo request",
+ 161: "extended echo reply",
+}
diff --git a/vendor/golang.org/x/net/ipv6/icmp.go b/vendor/golang.org/x/net/ipv6/icmp.go
new file mode 100644
index 0000000..b7f48e2
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/icmp.go
@@ -0,0 +1,60 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+import "golang.org/x/net/internal/iana"
+
+// BUG(mikio): On Windows, methods related to ICMPFilter are not
+// implemented.
+
+// An ICMPType represents a type of ICMP message.
+type ICMPType int
+
+func (typ ICMPType) String() string {
+ s, ok := icmpTypes[typ]
+ if !ok {
+ return ""
+ }
+ return s
+}
+
+// Protocol returns the ICMPv6 protocol number.
+func (typ ICMPType) Protocol() int {
+ return iana.ProtocolIPv6ICMP
+}
+
+// An ICMPFilter represents an ICMP message filter for incoming
+// packets. The filter belongs to a packet delivery path on a host and
+// it cannot interact with forwarding packets or tunnel-outer packets.
+//
+// Note: RFC 8200 defines a reasonable role model. A node means a
+// device that implements IP. A router means a node that forwards IP
+// packets not explicitly addressed to itself, and a host means a node
+// that is not a router.
+type ICMPFilter struct {
+ icmpv6Filter
+}
+
+// Accept accepts incoming ICMP packets including the type field value
+// typ.
+func (f *ICMPFilter) Accept(typ ICMPType) {
+ f.accept(typ)
+}
+
+// Block blocks incoming ICMP packets including the type field value
+// typ.
+func (f *ICMPFilter) Block(typ ICMPType) {
+ f.block(typ)
+}
+
+// SetAll sets the filter action to the filter.
+func (f *ICMPFilter) SetAll(block bool) {
+ f.setAll(block)
+}
+
+// WillBlock reports whether the ICMP type will be blocked.
+func (f *ICMPFilter) WillBlock(typ ICMPType) bool {
+ return f.willBlock(typ)
+}
diff --git a/vendor/golang.org/x/net/ipv6/icmp_bsd.go b/vendor/golang.org/x/net/ipv6/icmp_bsd.go
new file mode 100644
index 0000000..b03025c
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/icmp_bsd.go
@@ -0,0 +1,29 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd netbsd openbsd
+
+package ipv6
+
+func (f *icmpv6Filter) accept(typ ICMPType) {
+ f.Filt[typ>>5] |= 1 << (uint32(typ) & 31)
+}
+
+func (f *icmpv6Filter) block(typ ICMPType) {
+ f.Filt[typ>>5] &^= 1 << (uint32(typ) & 31)
+}
+
+func (f *icmpv6Filter) setAll(block bool) {
+ for i := range f.Filt {
+ if block {
+ f.Filt[i] = 0
+ } else {
+ f.Filt[i] = 1<<32 - 1
+ }
+ }
+}
+
+func (f *icmpv6Filter) willBlock(typ ICMPType) bool {
+ return f.Filt[typ>>5]&(1<<(uint32(typ)&31)) == 0
+}
diff --git a/vendor/golang.org/x/net/ipv6/icmp_linux.go b/vendor/golang.org/x/net/ipv6/icmp_linux.go
new file mode 100644
index 0000000..647f6b4
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/icmp_linux.go
@@ -0,0 +1,27 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+func (f *icmpv6Filter) accept(typ ICMPType) {
+ f.Data[typ>>5] &^= 1 << (uint32(typ) & 31)
+}
+
+func (f *icmpv6Filter) block(typ ICMPType) {
+ f.Data[typ>>5] |= 1 << (uint32(typ) & 31)
+}
+
+func (f *icmpv6Filter) setAll(block bool) {
+ for i := range f.Data {
+ if block {
+ f.Data[i] = 1<<32 - 1
+ } else {
+ f.Data[i] = 0
+ }
+ }
+}
+
+func (f *icmpv6Filter) willBlock(typ ICMPType) bool {
+ return f.Data[typ>>5]&(1<<(uint32(typ)&31)) != 0
+}
diff --git a/vendor/golang.org/x/net/ipv6/icmp_solaris.go b/vendor/golang.org/x/net/ipv6/icmp_solaris.go
new file mode 100644
index 0000000..7c23bb1
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/icmp_solaris.go
@@ -0,0 +1,27 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+func (f *icmpv6Filter) accept(typ ICMPType) {
+ f.X__icmp6_filt[typ>>5] |= 1 << (uint32(typ) & 31)
+}
+
+func (f *icmpv6Filter) block(typ ICMPType) {
+ f.X__icmp6_filt[typ>>5] &^= 1 << (uint32(typ) & 31)
+}
+
+func (f *icmpv6Filter) setAll(block bool) {
+ for i := range f.X__icmp6_filt {
+ if block {
+ f.X__icmp6_filt[i] = 0
+ } else {
+ f.X__icmp6_filt[i] = 1<<32 - 1
+ }
+ }
+}
+
+func (f *icmpv6Filter) willBlock(typ ICMPType) bool {
+ return f.X__icmp6_filt[typ>>5]&(1<<(uint32(typ)&31)) == 0
+}
diff --git a/vendor/golang.org/x/net/ipv6/icmp_stub.go b/vendor/golang.org/x/net/ipv6/icmp_stub.go
new file mode 100644
index 0000000..370e51a
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/icmp_stub.go
@@ -0,0 +1,23 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+
+package ipv6
+
+type icmpv6Filter struct {
+}
+
+func (f *icmpv6Filter) accept(typ ICMPType) {
+}
+
+func (f *icmpv6Filter) block(typ ICMPType) {
+}
+
+func (f *icmpv6Filter) setAll(block bool) {
+}
+
+func (f *icmpv6Filter) willBlock(typ ICMPType) bool {
+ return false
+}
diff --git a/vendor/golang.org/x/net/ipv6/icmp_windows.go b/vendor/golang.org/x/net/ipv6/icmp_windows.go
new file mode 100644
index 0000000..443cd07
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/icmp_windows.go
@@ -0,0 +1,22 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+func (f *icmpv6Filter) accept(typ ICMPType) {
+ // TODO(mikio): implement this
+}
+
+func (f *icmpv6Filter) block(typ ICMPType) {
+ // TODO(mikio): implement this
+}
+
+func (f *icmpv6Filter) setAll(block bool) {
+ // TODO(mikio): implement this
+}
+
+func (f *icmpv6Filter) willBlock(typ ICMPType) bool {
+ // TODO(mikio): implement this
+ return false
+}
diff --git a/vendor/golang.org/x/net/ipv6/payload.go b/vendor/golang.org/x/net/ipv6/payload.go
new file mode 100644
index 0000000..a8197f1
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/payload.go
@@ -0,0 +1,23 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+import (
+ "net"
+
+ "golang.org/x/net/internal/socket"
+)
+
+// BUG(mikio): On Windows, the ControlMessage for ReadFrom and WriteTo
+// methods of PacketConn is not implemented.
+
+// A payloadHandler represents the IPv6 datagram payload handler.
+type payloadHandler struct {
+ net.PacketConn
+ *socket.Conn
+ rawOpt
+}
+
+func (c *payloadHandler) ok() bool { return c != nil && c.PacketConn != nil && c.Conn != nil }
diff --git a/vendor/golang.org/x/net/ipv6/payload_cmsg.go b/vendor/golang.org/x/net/ipv6/payload_cmsg.go
new file mode 100644
index 0000000..284a042
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/payload_cmsg.go
@@ -0,0 +1,70 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package ipv6
+
+import (
+ "net"
+
+ "golang.org/x/net/internal/socket"
+)
+
+// ReadFrom reads a payload of the received IPv6 datagram, from the
+// endpoint c, copying the payload into b. It returns the number of
+// bytes copied into b, the control message cm and the source address
+// src of the received datagram.
+func (c *payloadHandler) ReadFrom(b []byte) (n int, cm *ControlMessage, src net.Addr, err error) {
+ if !c.ok() {
+ return 0, nil, nil, errInvalidConn
+ }
+ c.rawOpt.RLock()
+ m := socket.Message{
+ Buffers: [][]byte{b},
+ OOB: NewControlMessage(c.rawOpt.cflags),
+ }
+ c.rawOpt.RUnlock()
+ switch c.PacketConn.(type) {
+ case *net.UDPConn:
+ if err := c.RecvMsg(&m, 0); err != nil {
+ return 0, nil, nil, &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
+ }
+ case *net.IPConn:
+ if err := c.RecvMsg(&m, 0); err != nil {
+ return 0, nil, nil, &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
+ }
+ default:
+ return 0, nil, nil, &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: errInvalidConnType}
+ }
+ if m.NN > 0 {
+ cm = new(ControlMessage)
+ if err := cm.Parse(m.OOB[:m.NN]); err != nil {
+ return 0, nil, nil, &net.OpError{Op: "read", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Err: err}
+ }
+ cm.Src = netAddrToIP16(m.Addr)
+ }
+ return m.N, cm, m.Addr, nil
+}
+
+// WriteTo writes a payload of the IPv6 datagram, to the destination
+// address dst through the endpoint c, copying the payload from b. It
+// returns the number of bytes written. The control message cm allows
+// the IPv6 header fields and the datagram path to be specified. The
+// cm may be nil if control of the outgoing datagram is not required.
+func (c *payloadHandler) WriteTo(b []byte, cm *ControlMessage, dst net.Addr) (n int, err error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ m := socket.Message{
+ Buffers: [][]byte{b},
+ OOB: cm.Marshal(),
+ Addr: dst,
+ }
+ err = c.SendMsg(&m, 0)
+ if err != nil {
+ err = &net.OpError{Op: "write", Net: c.PacketConn.LocalAddr().Network(), Source: c.PacketConn.LocalAddr(), Addr: opAddr(dst), Err: err}
+ }
+ return m.N, err
+}
diff --git a/vendor/golang.org/x/net/ipv6/payload_nocmsg.go b/vendor/golang.org/x/net/ipv6/payload_nocmsg.go
new file mode 100644
index 0000000..c5a4c96
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/payload_nocmsg.go
@@ -0,0 +1,38 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris
+
+package ipv6
+
+import "net"
+
+// ReadFrom reads a payload of the received IPv6 datagram, from the
+// endpoint c, copying the payload into b. It returns the number of
+// bytes copied into b, the control message cm and the source address
+// src of the received datagram.
+func (c *payloadHandler) ReadFrom(b []byte) (n int, cm *ControlMessage, src net.Addr, err error) {
+ if !c.ok() {
+ return 0, nil, nil, errInvalidConn
+ }
+ if n, src, err = c.PacketConn.ReadFrom(b); err != nil {
+ return 0, nil, nil, err
+ }
+ return
+}
+
+// WriteTo writes a payload of the IPv6 datagram, to the destination
+// address dst through the endpoint c, copying the payload from b. It
+// returns the number of bytes written. The control message cm allows
+// the IPv6 header fields and the datagram path to be specified. The
+// cm may be nil if control of the outgoing datagram is not required.
+func (c *payloadHandler) WriteTo(b []byte, cm *ControlMessage, dst net.Addr) (n int, err error) {
+ if !c.ok() {
+ return 0, errInvalidConn
+ }
+ if dst == nil {
+ return 0, errMissingAddress
+ }
+ return c.PacketConn.WriteTo(b, dst)
+}
diff --git a/vendor/golang.org/x/net/ipv6/sockopt.go b/vendor/golang.org/x/net/ipv6/sockopt.go
new file mode 100644
index 0000000..cc3907d
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sockopt.go
@@ -0,0 +1,43 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+import "golang.org/x/net/internal/socket"
+
+// Sticky socket options
+const (
+ ssoTrafficClass = iota // header field for unicast packet, RFC 3542
+ ssoHopLimit // header field for unicast packet, RFC 3493
+ ssoMulticastInterface // outbound interface for multicast packet, RFC 3493
+ ssoMulticastHopLimit // header field for multicast packet, RFC 3493
+ ssoMulticastLoopback // loopback for multicast packet, RFC 3493
+ ssoReceiveTrafficClass // header field on received packet, RFC 3542
+ ssoReceiveHopLimit // header field on received packet, RFC 2292 or 3542
+ ssoReceivePacketInfo // incbound or outbound packet path, RFC 2292 or 3542
+ ssoReceivePathMTU // path mtu, RFC 3542
+ ssoPathMTU // path mtu, RFC 3542
+ ssoChecksum // packet checksum, RFC 2292 or 3542
+ ssoICMPFilter // icmp filter, RFC 2292 or 3542
+ ssoJoinGroup // any-source multicast, RFC 3493
+ ssoLeaveGroup // any-source multicast, RFC 3493
+ ssoJoinSourceGroup // source-specific multicast
+ ssoLeaveSourceGroup // source-specific multicast
+ ssoBlockSourceGroup // any-source or source-specific multicast
+ ssoUnblockSourceGroup // any-source or source-specific multicast
+ ssoAttachFilter // attach BPF for filtering inbound traffic
+)
+
+// Sticky socket option value types
+const (
+ ssoTypeIPMreq = iota + 1
+ ssoTypeGroupReq
+ ssoTypeGroupSourceReq
+)
+
+// A sockOpt represents a binding for sticky socket option.
+type sockOpt struct {
+ socket.Option
+ typ int // hint for option value type; optional
+}
diff --git a/vendor/golang.org/x/net/ipv6/sockopt_posix.go b/vendor/golang.org/x/net/ipv6/sockopt_posix.go
new file mode 100644
index 0000000..824c623
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sockopt_posix.go
@@ -0,0 +1,89 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris windows
+
+package ipv6
+
+import (
+ "net"
+ "runtime"
+ "unsafe"
+
+ "golang.org/x/net/bpf"
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) getMulticastInterface(c *socket.Conn) (*net.Interface, error) {
+ n, err := so.GetInt(c)
+ if err != nil {
+ return nil, err
+ }
+ return net.InterfaceByIndex(n)
+}
+
+func (so *sockOpt) setMulticastInterface(c *socket.Conn, ifi *net.Interface) error {
+ var n int
+ if ifi != nil {
+ n = ifi.Index
+ }
+ return so.SetInt(c, n)
+}
+
+func (so *sockOpt) getICMPFilter(c *socket.Conn) (*ICMPFilter, error) {
+ b := make([]byte, so.Len)
+ n, err := so.Get(c, b)
+ if err != nil {
+ return nil, err
+ }
+ if n != sizeofICMPv6Filter {
+ return nil, errNotImplemented
+ }
+ return (*ICMPFilter)(unsafe.Pointer(&b[0])), nil
+}
+
+func (so *sockOpt) setICMPFilter(c *socket.Conn, f *ICMPFilter) error {
+ b := (*[sizeofICMPv6Filter]byte)(unsafe.Pointer(f))[:sizeofICMPv6Filter]
+ return so.Set(c, b)
+}
+
+func (so *sockOpt) getMTUInfo(c *socket.Conn) (*net.Interface, int, error) {
+ b := make([]byte, so.Len)
+ n, err := so.Get(c, b)
+ if err != nil {
+ return nil, 0, err
+ }
+ if n != sizeofIPv6Mtuinfo {
+ return nil, 0, errNotImplemented
+ }
+ mi := (*ipv6Mtuinfo)(unsafe.Pointer(&b[0]))
+ if mi.Addr.Scope_id == 0 || runtime.GOOS == "aix" {
+ // AIX kernel might return a wrong address.
+ return nil, int(mi.Mtu), nil
+ }
+ ifi, err := net.InterfaceByIndex(int(mi.Addr.Scope_id))
+ if err != nil {
+ return nil, 0, err
+ }
+ return ifi, int(mi.Mtu), nil
+}
+
+func (so *sockOpt) setGroup(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
+ switch so.typ {
+ case ssoTypeIPMreq:
+ return so.setIPMreq(c, ifi, grp)
+ case ssoTypeGroupReq:
+ return so.setGroupReq(c, ifi, grp)
+ default:
+ return errNotImplemented
+ }
+}
+
+func (so *sockOpt) setSourceGroup(c *socket.Conn, ifi *net.Interface, grp, src net.IP) error {
+ return so.setGroupSourceReq(c, ifi, grp, src)
+}
+
+func (so *sockOpt) setBPF(c *socket.Conn, f []bpf.RawInstruction) error {
+ return so.setAttachFilter(c, f)
+}
diff --git a/vendor/golang.org/x/net/ipv6/sockopt_stub.go b/vendor/golang.org/x/net/ipv6/sockopt_stub.go
new file mode 100644
index 0000000..0a87a93
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sockopt_stub.go
@@ -0,0 +1,46 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+
+package ipv6
+
+import (
+ "net"
+
+ "golang.org/x/net/bpf"
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) getMulticastInterface(c *socket.Conn) (*net.Interface, error) {
+ return nil, errNotImplemented
+}
+
+func (so *sockOpt) setMulticastInterface(c *socket.Conn, ifi *net.Interface) error {
+ return errNotImplemented
+}
+
+func (so *sockOpt) getICMPFilter(c *socket.Conn) (*ICMPFilter, error) {
+ return nil, errNotImplemented
+}
+
+func (so *sockOpt) setICMPFilter(c *socket.Conn, f *ICMPFilter) error {
+ return errNotImplemented
+}
+
+func (so *sockOpt) getMTUInfo(c *socket.Conn) (*net.Interface, int, error) {
+ return nil, 0, errNotImplemented
+}
+
+func (so *sockOpt) setGroup(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
+ return errNotImplemented
+}
+
+func (so *sockOpt) setSourceGroup(c *socket.Conn, ifi *net.Interface, grp, src net.IP) error {
+ return errNotImplemented
+}
+
+func (so *sockOpt) setBPF(c *socket.Conn, f []bpf.RawInstruction) error {
+ return errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/ipv6/sys_aix.go b/vendor/golang.org/x/net/ipv6/sys_aix.go
new file mode 100644
index 0000000..bce7091
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sys_aix.go
@@ -0,0 +1,77 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Added for go1.11 compatibility
+// +build aix
+
+package ipv6
+
+import (
+ "net"
+ "syscall"
+ "unsafe"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{
+ ctlTrafficClass: {sysIPV6_TCLASS, 4, marshalTrafficClass, parseTrafficClass},
+ ctlHopLimit: {sysIPV6_HOPLIMIT, 4, marshalHopLimit, parseHopLimit},
+ ctlPacketInfo: {sysIPV6_PKTINFO, sizeofInet6Pktinfo, marshalPacketInfo, parsePacketInfo},
+ ctlNextHop: {sysIPV6_NEXTHOP, sizeofSockaddrInet6, marshalNextHop, parseNextHop},
+ ctlPathMTU: {sysIPV6_PATHMTU, sizeofIPv6Mtuinfo, marshalPathMTU, parsePathMTU},
+ }
+
+ sockOpts = map[int]*sockOpt{
+ ssoTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_TCLASS, Len: 4}},
+ ssoHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_UNICAST_HOPS, Len: 4}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_IF, Len: 4}},
+ ssoMulticastHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_HOPS, Len: 4}},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_LOOP, Len: 4}},
+ ssoReceiveTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVTCLASS, Len: 4}},
+ ssoReceiveHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVHOPLIMIT, Len: 4}},
+ ssoReceivePacketInfo: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPKTINFO, Len: 4}},
+ ssoReceivePathMTU: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPATHMTU, Len: 4}},
+ ssoPathMTU: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_PATHMTU, Len: sizeofIPv6Mtuinfo}},
+ ssoChecksum: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_CHECKSUM, Len: 4}},
+ ssoICMPFilter: {Option: socket.Option{Level: iana.ProtocolIPv6ICMP, Name: sysICMP6_FILTER, Len: sizeofICMPv6Filter}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_JOIN_GROUP, Len: sizeofIPv6Mreq}, typ: ssoTypeIPMreq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_LEAVE_GROUP, Len: sizeofIPv6Mreq}, typ: ssoTypeIPMreq},
+ }
+)
+
+func (sa *sockaddrInet6) setSockaddr(ip net.IP, i int) {
+ sa.Len = sizeofSockaddrInet6
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], ip)
+ sa.Scope_id = uint32(i)
+}
+
+func (pi *inet6Pktinfo) setIfindex(i int) {
+ pi.Ifindex = int32(i)
+}
+
+func (mreq *ipv6Mreq) setIfindex(i int) {
+ mreq.Interface = uint32(i)
+}
+
+func (gr *groupReq) setGroup(grp net.IP) {
+ sa := (*sockaddrInet6)(unsafe.Pointer(uintptr(unsafe.Pointer(gr)) + 4))
+ sa.Len = sizeofSockaddrInet6
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], grp)
+}
+
+func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
+ sa := (*sockaddrInet6)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 4))
+ sa.Len = sizeofSockaddrInet6
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], grp)
+ sa = (*sockaddrInet6)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 132))
+ sa.Len = sizeofSockaddrInet6
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], src)
+}
diff --git a/vendor/golang.org/x/net/ipv6/sys_asmreq.go b/vendor/golang.org/x/net/ipv6/sys_asmreq.go
new file mode 100644
index 0000000..8c3934c
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sys_asmreq.go
@@ -0,0 +1,24 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris windows
+
+package ipv6
+
+import (
+ "net"
+ "unsafe"
+
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) setIPMreq(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
+ var mreq ipv6Mreq
+ copy(mreq.Multiaddr[:], grp)
+ if ifi != nil {
+ mreq.setIfindex(ifi.Index)
+ }
+ b := (*[sizeofIPv6Mreq]byte)(unsafe.Pointer(&mreq))[:sizeofIPv6Mreq]
+ return so.Set(c, b)
+}
diff --git a/vendor/golang.org/x/net/ipv6/sys_asmreq_stub.go b/vendor/golang.org/x/net/ipv6/sys_asmreq_stub.go
new file mode 100644
index 0000000..87ae481
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sys_asmreq_stub.go
@@ -0,0 +1,17 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+
+package ipv6
+
+import (
+ "net"
+
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) setIPMreq(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
+ return errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/ipv6/sys_bpf.go b/vendor/golang.org/x/net/ipv6/sys_bpf.go
new file mode 100644
index 0000000..b2dbcb2
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sys_bpf.go
@@ -0,0 +1,23 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux
+
+package ipv6
+
+import (
+ "unsafe"
+
+ "golang.org/x/net/bpf"
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) setAttachFilter(c *socket.Conn, f []bpf.RawInstruction) error {
+ prog := sockFProg{
+ Len: uint16(len(f)),
+ Filter: (*sockFilter)(unsafe.Pointer(&f[0])),
+ }
+ b := (*[sizeofSockFprog]byte)(unsafe.Pointer(&prog))[:sizeofSockFprog]
+ return so.Set(c, b)
+}
diff --git a/vendor/golang.org/x/net/ipv6/sys_bpf_stub.go b/vendor/golang.org/x/net/ipv6/sys_bpf_stub.go
new file mode 100644
index 0000000..eb9f831
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sys_bpf_stub.go
@@ -0,0 +1,16 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !linux
+
+package ipv6
+
+import (
+ "golang.org/x/net/bpf"
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) setAttachFilter(c *socket.Conn, f []bpf.RawInstruction) error {
+ return errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/ipv6/sys_bsd.go b/vendor/golang.org/x/net/ipv6/sys_bsd.go
new file mode 100644
index 0000000..e416eaa
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sys_bsd.go
@@ -0,0 +1,57 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build dragonfly netbsd openbsd
+
+package ipv6
+
+import (
+ "net"
+ "syscall"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{
+ ctlTrafficClass: {sysIPV6_TCLASS, 4, marshalTrafficClass, parseTrafficClass},
+ ctlHopLimit: {sysIPV6_HOPLIMIT, 4, marshalHopLimit, parseHopLimit},
+ ctlPacketInfo: {sysIPV6_PKTINFO, sizeofInet6Pktinfo, marshalPacketInfo, parsePacketInfo},
+ ctlNextHop: {sysIPV6_NEXTHOP, sizeofSockaddrInet6, marshalNextHop, parseNextHop},
+ ctlPathMTU: {sysIPV6_PATHMTU, sizeofIPv6Mtuinfo, marshalPathMTU, parsePathMTU},
+ }
+
+ sockOpts = map[int]*sockOpt{
+ ssoTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_TCLASS, Len: 4}},
+ ssoHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_UNICAST_HOPS, Len: 4}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_IF, Len: 4}},
+ ssoMulticastHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_HOPS, Len: 4}},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_LOOP, Len: 4}},
+ ssoReceiveTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVTCLASS, Len: 4}},
+ ssoReceiveHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVHOPLIMIT, Len: 4}},
+ ssoReceivePacketInfo: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPKTINFO, Len: 4}},
+ ssoReceivePathMTU: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPATHMTU, Len: 4}},
+ ssoPathMTU: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_PATHMTU, Len: sizeofIPv6Mtuinfo}},
+ ssoChecksum: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_CHECKSUM, Len: 4}},
+ ssoICMPFilter: {Option: socket.Option{Level: iana.ProtocolIPv6ICMP, Name: sysICMP6_FILTER, Len: sizeofICMPv6Filter}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_JOIN_GROUP, Len: sizeofIPv6Mreq}, typ: ssoTypeIPMreq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_LEAVE_GROUP, Len: sizeofIPv6Mreq}, typ: ssoTypeIPMreq},
+ }
+)
+
+func (sa *sockaddrInet6) setSockaddr(ip net.IP, i int) {
+ sa.Len = sizeofSockaddrInet6
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], ip)
+ sa.Scope_id = uint32(i)
+}
+
+func (pi *inet6Pktinfo) setIfindex(i int) {
+ pi.Ifindex = uint32(i)
+}
+
+func (mreq *ipv6Mreq) setIfindex(i int) {
+ mreq.Interface = uint32(i)
+}
diff --git a/vendor/golang.org/x/net/ipv6/sys_darwin.go b/vendor/golang.org/x/net/ipv6/sys_darwin.go
new file mode 100644
index 0000000..12cc5cb
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sys_darwin.go
@@ -0,0 +1,78 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+import (
+ "net"
+ "syscall"
+ "unsafe"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{
+ ctlTrafficClass: {sysIPV6_TCLASS, 4, marshalTrafficClass, parseTrafficClass},
+ ctlHopLimit: {sysIPV6_HOPLIMIT, 4, marshalHopLimit, parseHopLimit},
+ ctlPacketInfo: {sysIPV6_PKTINFO, sizeofInet6Pktinfo, marshalPacketInfo, parsePacketInfo},
+ ctlNextHop: {sysIPV6_NEXTHOP, sizeofSockaddrInet6, marshalNextHop, parseNextHop},
+ ctlPathMTU: {sysIPV6_PATHMTU, sizeofIPv6Mtuinfo, marshalPathMTU, parsePathMTU},
+ }
+
+ sockOpts = map[int]*sockOpt{
+ ssoHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_UNICAST_HOPS, Len: 4}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_IF, Len: 4}},
+ ssoMulticastHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_HOPS, Len: 4}},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_LOOP, Len: 4}},
+ ssoTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_TCLASS, Len: 4}},
+ ssoReceiveTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVTCLASS, Len: 4}},
+ ssoReceiveHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVHOPLIMIT, Len: 4}},
+ ssoReceivePacketInfo: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPKTINFO, Len: 4}},
+ ssoReceivePathMTU: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPATHMTU, Len: 4}},
+ ssoPathMTU: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_PATHMTU, Len: sizeofIPv6Mtuinfo}},
+ ssoChecksum: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_CHECKSUM, Len: 4}},
+ ssoICMPFilter: {Option: socket.Option{Level: iana.ProtocolIPv6ICMP, Name: sysICMP6_FILTER, Len: sizeofICMPv6Filter}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_JOIN_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_LEAVE_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoJoinSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_JOIN_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoLeaveSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_LEAVE_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoBlockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_BLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoUnblockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_UNBLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ }
+)
+
+func (sa *sockaddrInet6) setSockaddr(ip net.IP, i int) {
+ sa.Len = sizeofSockaddrInet6
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], ip)
+ sa.Scope_id = uint32(i)
+}
+
+func (pi *inet6Pktinfo) setIfindex(i int) {
+ pi.Ifindex = uint32(i)
+}
+
+func (mreq *ipv6Mreq) setIfindex(i int) {
+ mreq.Interface = uint32(i)
+}
+
+func (gr *groupReq) setGroup(grp net.IP) {
+ sa := (*sockaddrInet6)(unsafe.Pointer(uintptr(unsafe.Pointer(gr)) + 4))
+ sa.Len = sizeofSockaddrInet6
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], grp)
+}
+
+func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
+ sa := (*sockaddrInet6)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 4))
+ sa.Len = sizeofSockaddrInet6
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], grp)
+ sa = (*sockaddrInet6)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 132))
+ sa.Len = sizeofSockaddrInet6
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], src)
+}
diff --git a/vendor/golang.org/x/net/ipv6/sys_freebsd.go b/vendor/golang.org/x/net/ipv6/sys_freebsd.go
new file mode 100644
index 0000000..85a9f5d
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sys_freebsd.go
@@ -0,0 +1,92 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+import (
+ "net"
+ "runtime"
+ "strings"
+ "syscall"
+ "unsafe"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{
+ ctlTrafficClass: {sysIPV6_TCLASS, 4, marshalTrafficClass, parseTrafficClass},
+ ctlHopLimit: {sysIPV6_HOPLIMIT, 4, marshalHopLimit, parseHopLimit},
+ ctlPacketInfo: {sysIPV6_PKTINFO, sizeofInet6Pktinfo, marshalPacketInfo, parsePacketInfo},
+ ctlNextHop: {sysIPV6_NEXTHOP, sizeofSockaddrInet6, marshalNextHop, parseNextHop},
+ ctlPathMTU: {sysIPV6_PATHMTU, sizeofIPv6Mtuinfo, marshalPathMTU, parsePathMTU},
+ }
+
+ sockOpts = map[int]sockOpt{
+ ssoTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_TCLASS, Len: 4}},
+ ssoHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_UNICAST_HOPS, Len: 4}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_IF, Len: 4}},
+ ssoMulticastHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_HOPS, Len: 4}},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_LOOP, Len: 4}},
+ ssoReceiveTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVTCLASS, Len: 4}},
+ ssoReceiveHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVHOPLIMIT, Len: 4}},
+ ssoReceivePacketInfo: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPKTINFO, Len: 4}},
+ ssoReceivePathMTU: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPATHMTU, Len: 4}},
+ ssoPathMTU: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_PATHMTU, Len: sizeofIPv6Mtuinfo}},
+ ssoChecksum: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_CHECKSUM, Len: 4}},
+ ssoICMPFilter: {Option: socket.Option{Level: iana.ProtocolIPv6ICMP, Name: sysICMP6_FILTER, Len: sizeofICMPv6Filter}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_JOIN_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_LEAVE_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoJoinSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_JOIN_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoLeaveSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_LEAVE_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoBlockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_BLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoUnblockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_UNBLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ }
+)
+
+func init() {
+ if runtime.GOOS == "freebsd" && runtime.GOARCH == "386" {
+ archs, _ := syscall.Sysctl("kern.supported_archs")
+ for _, s := range strings.Fields(archs) {
+ if s == "amd64" {
+ compatFreeBSD32 = true
+ break
+ }
+ }
+ }
+}
+
+func (sa *sockaddrInet6) setSockaddr(ip net.IP, i int) {
+ sa.Len = sizeofSockaddrInet6
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], ip)
+ sa.Scope_id = uint32(i)
+}
+
+func (pi *inet6Pktinfo) setIfindex(i int) {
+ pi.Ifindex = uint32(i)
+}
+
+func (mreq *ipv6Mreq) setIfindex(i int) {
+ mreq.Interface = uint32(i)
+}
+
+func (gr *groupReq) setGroup(grp net.IP) {
+ sa := (*sockaddrInet6)(unsafe.Pointer(&gr.Group))
+ sa.Len = sizeofSockaddrInet6
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], grp)
+}
+
+func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
+ sa := (*sockaddrInet6)(unsafe.Pointer(&gsr.Group))
+ sa.Len = sizeofSockaddrInet6
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], grp)
+ sa = (*sockaddrInet6)(unsafe.Pointer(&gsr.Source))
+ sa.Len = sizeofSockaddrInet6
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], src)
+}
diff --git a/vendor/golang.org/x/net/ipv6/sys_linux.go b/vendor/golang.org/x/net/ipv6/sys_linux.go
new file mode 100644
index 0000000..bc21810
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sys_linux.go
@@ -0,0 +1,74 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+import (
+ "net"
+ "syscall"
+ "unsafe"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{
+ ctlTrafficClass: {sysIPV6_TCLASS, 4, marshalTrafficClass, parseTrafficClass},
+ ctlHopLimit: {sysIPV6_HOPLIMIT, 4, marshalHopLimit, parseHopLimit},
+ ctlPacketInfo: {sysIPV6_PKTINFO, sizeofInet6Pktinfo, marshalPacketInfo, parsePacketInfo},
+ ctlPathMTU: {sysIPV6_PATHMTU, sizeofIPv6Mtuinfo, marshalPathMTU, parsePathMTU},
+ }
+
+ sockOpts = map[int]*sockOpt{
+ ssoTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_TCLASS, Len: 4}},
+ ssoHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_UNICAST_HOPS, Len: 4}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_IF, Len: 4}},
+ ssoMulticastHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_HOPS, Len: 4}},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_LOOP, Len: 4}},
+ ssoReceiveTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVTCLASS, Len: 4}},
+ ssoReceiveHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVHOPLIMIT, Len: 4}},
+ ssoReceivePacketInfo: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPKTINFO, Len: 4}},
+ ssoReceivePathMTU: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPATHMTU, Len: 4}},
+ ssoPathMTU: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_PATHMTU, Len: sizeofIPv6Mtuinfo}},
+ ssoChecksum: {Option: socket.Option{Level: iana.ProtocolReserved, Name: sysIPV6_CHECKSUM, Len: 4}},
+ ssoICMPFilter: {Option: socket.Option{Level: iana.ProtocolIPv6ICMP, Name: sysICMPV6_FILTER, Len: sizeofICMPv6Filter}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_JOIN_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_LEAVE_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoJoinSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_JOIN_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoLeaveSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_LEAVE_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoBlockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_BLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoUnblockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_UNBLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoAttachFilter: {Option: socket.Option{Level: sysSOL_SOCKET, Name: sysSO_ATTACH_FILTER, Len: sizeofSockFprog}},
+ }
+)
+
+func (sa *sockaddrInet6) setSockaddr(ip net.IP, i int) {
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], ip)
+ sa.Scope_id = uint32(i)
+}
+
+func (pi *inet6Pktinfo) setIfindex(i int) {
+ pi.Ifindex = int32(i)
+}
+
+func (mreq *ipv6Mreq) setIfindex(i int) {
+ mreq.Ifindex = int32(i)
+}
+
+func (gr *groupReq) setGroup(grp net.IP) {
+ sa := (*sockaddrInet6)(unsafe.Pointer(&gr.Group))
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], grp)
+}
+
+func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
+ sa := (*sockaddrInet6)(unsafe.Pointer(&gsr.Group))
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], grp)
+ sa = (*sockaddrInet6)(unsafe.Pointer(&gsr.Source))
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], src)
+}
diff --git a/vendor/golang.org/x/net/ipv6/sys_solaris.go b/vendor/golang.org/x/net/ipv6/sys_solaris.go
new file mode 100644
index 0000000..d348b5f
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sys_solaris.go
@@ -0,0 +1,74 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+import (
+ "net"
+ "syscall"
+ "unsafe"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{
+ ctlTrafficClass: {sysIPV6_TCLASS, 4, marshalTrafficClass, parseTrafficClass},
+ ctlHopLimit: {sysIPV6_HOPLIMIT, 4, marshalHopLimit, parseHopLimit},
+ ctlPacketInfo: {sysIPV6_PKTINFO, sizeofInet6Pktinfo, marshalPacketInfo, parsePacketInfo},
+ ctlNextHop: {sysIPV6_NEXTHOP, sizeofSockaddrInet6, marshalNextHop, parseNextHop},
+ ctlPathMTU: {sysIPV6_PATHMTU, sizeofIPv6Mtuinfo, marshalPathMTU, parsePathMTU},
+ }
+
+ sockOpts = map[int]*sockOpt{
+ ssoTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_TCLASS, Len: 4}},
+ ssoHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_UNICAST_HOPS, Len: 4}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_IF, Len: 4}},
+ ssoMulticastHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_HOPS, Len: 4}},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_LOOP, Len: 4}},
+ ssoReceiveTrafficClass: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVTCLASS, Len: 4}},
+ ssoReceiveHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVHOPLIMIT, Len: 4}},
+ ssoReceivePacketInfo: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPKTINFO, Len: 4}},
+ ssoReceivePathMTU: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_RECVPATHMTU, Len: 4}},
+ ssoPathMTU: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_PATHMTU, Len: sizeofIPv6Mtuinfo}},
+ ssoChecksum: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_CHECKSUM, Len: 4}},
+ ssoICMPFilter: {Option: socket.Option{Level: iana.ProtocolIPv6ICMP, Name: sysICMP6_FILTER, Len: sizeofICMPv6Filter}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_JOIN_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_LEAVE_GROUP, Len: sizeofGroupReq}, typ: ssoTypeGroupReq},
+ ssoJoinSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_JOIN_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoLeaveSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_LEAVE_SOURCE_GROUP, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoBlockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_BLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ ssoUnblockSourceGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysMCAST_UNBLOCK_SOURCE, Len: sizeofGroupSourceReq}, typ: ssoTypeGroupSourceReq},
+ }
+)
+
+func (sa *sockaddrInet6) setSockaddr(ip net.IP, i int) {
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], ip)
+ sa.Scope_id = uint32(i)
+}
+
+func (pi *inet6Pktinfo) setIfindex(i int) {
+ pi.Ifindex = uint32(i)
+}
+
+func (mreq *ipv6Mreq) setIfindex(i int) {
+ mreq.Interface = uint32(i)
+}
+
+func (gr *groupReq) setGroup(grp net.IP) {
+ sa := (*sockaddrInet6)(unsafe.Pointer(uintptr(unsafe.Pointer(gr)) + 4))
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], grp)
+}
+
+func (gsr *groupSourceReq) setSourceGroup(grp, src net.IP) {
+ sa := (*sockaddrInet6)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 4))
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], grp)
+ sa = (*sockaddrInet6)(unsafe.Pointer(uintptr(unsafe.Pointer(gsr)) + 260))
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], src)
+}
diff --git a/vendor/golang.org/x/net/ipv6/sys_ssmreq.go b/vendor/golang.org/x/net/ipv6/sys_ssmreq.go
new file mode 100644
index 0000000..9b52e97
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sys_ssmreq.go
@@ -0,0 +1,54 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin freebsd linux solaris
+
+package ipv6
+
+import (
+ "net"
+ "unsafe"
+
+ "golang.org/x/net/internal/socket"
+)
+
+var compatFreeBSD32 bool // 386 emulation on amd64
+
+func (so *sockOpt) setGroupReq(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
+ var gr groupReq
+ if ifi != nil {
+ gr.Interface = uint32(ifi.Index)
+ }
+ gr.setGroup(grp)
+ var b []byte
+ if compatFreeBSD32 {
+ var d [sizeofGroupReq + 4]byte
+ s := (*[sizeofGroupReq]byte)(unsafe.Pointer(&gr))
+ copy(d[:4], s[:4])
+ copy(d[8:], s[4:])
+ b = d[:]
+ } else {
+ b = (*[sizeofGroupReq]byte)(unsafe.Pointer(&gr))[:sizeofGroupReq]
+ }
+ return so.Set(c, b)
+}
+
+func (so *sockOpt) setGroupSourceReq(c *socket.Conn, ifi *net.Interface, grp, src net.IP) error {
+ var gsr groupSourceReq
+ if ifi != nil {
+ gsr.Interface = uint32(ifi.Index)
+ }
+ gsr.setSourceGroup(grp, src)
+ var b []byte
+ if compatFreeBSD32 {
+ var d [sizeofGroupSourceReq + 4]byte
+ s := (*[sizeofGroupSourceReq]byte)(unsafe.Pointer(&gsr))
+ copy(d[:4], s[:4])
+ copy(d[8:], s[4:])
+ b = d[:]
+ } else {
+ b = (*[sizeofGroupSourceReq]byte)(unsafe.Pointer(&gsr))[:sizeofGroupSourceReq]
+ }
+ return so.Set(c, b)
+}
diff --git a/vendor/golang.org/x/net/ipv6/sys_ssmreq_stub.go b/vendor/golang.org/x/net/ipv6/sys_ssmreq_stub.go
new file mode 100644
index 0000000..d5bc110
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sys_ssmreq_stub.go
@@ -0,0 +1,21 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!freebsd,!linux,!solaris
+
+package ipv6
+
+import (
+ "net"
+
+ "golang.org/x/net/internal/socket"
+)
+
+func (so *sockOpt) setGroupReq(c *socket.Conn, ifi *net.Interface, grp net.IP) error {
+ return errNotImplemented
+}
+
+func (so *sockOpt) setGroupSourceReq(c *socket.Conn, ifi *net.Interface, grp, src net.IP) error {
+ return errNotImplemented
+}
diff --git a/vendor/golang.org/x/net/ipv6/sys_stub.go b/vendor/golang.org/x/net/ipv6/sys_stub.go
new file mode 100644
index 0000000..4f252d0
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sys_stub.go
@@ -0,0 +1,13 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !aix,!darwin,!dragonfly,!freebsd,!linux,!netbsd,!openbsd,!solaris,!windows
+
+package ipv6
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{}
+
+ sockOpts = map[int]*sockOpt{}
+)
diff --git a/vendor/golang.org/x/net/ipv6/sys_windows.go b/vendor/golang.org/x/net/ipv6/sys_windows.go
new file mode 100644
index 0000000..fc36b01
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/sys_windows.go
@@ -0,0 +1,75 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package ipv6
+
+import (
+ "net"
+ "syscall"
+
+ "golang.org/x/net/internal/iana"
+ "golang.org/x/net/internal/socket"
+)
+
+const (
+ // See ws2tcpip.h.
+ sysIPV6_UNICAST_HOPS = 0x4
+ sysIPV6_MULTICAST_IF = 0x9
+ sysIPV6_MULTICAST_HOPS = 0xa
+ sysIPV6_MULTICAST_LOOP = 0xb
+ sysIPV6_JOIN_GROUP = 0xc
+ sysIPV6_LEAVE_GROUP = 0xd
+ sysIPV6_PKTINFO = 0x13
+
+ sizeofSockaddrInet6 = 0x1c
+
+ sizeofIPv6Mreq = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+ sizeofICMPv6Filter = 0
+)
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Interface uint32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type icmpv6Filter struct {
+ // TODO(mikio): implement this
+}
+
+var (
+ ctlOpts = [ctlMax]ctlOpt{}
+
+ sockOpts = map[int]*sockOpt{
+ ssoHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_UNICAST_HOPS, Len: 4}},
+ ssoMulticastInterface: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_IF, Len: 4}},
+ ssoMulticastHopLimit: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_HOPS, Len: 4}},
+ ssoMulticastLoopback: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_MULTICAST_LOOP, Len: 4}},
+ ssoJoinGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_JOIN_GROUP, Len: sizeofIPv6Mreq}, typ: ssoTypeIPMreq},
+ ssoLeaveGroup: {Option: socket.Option{Level: iana.ProtocolIPv6, Name: sysIPV6_LEAVE_GROUP, Len: sizeofIPv6Mreq}, typ: ssoTypeIPMreq},
+ }
+)
+
+func (sa *sockaddrInet6) setSockaddr(ip net.IP, i int) {
+ sa.Family = syscall.AF_INET6
+ copy(sa.Addr[:], ip)
+ sa.Scope_id = uint32(i)
+}
+
+func (mreq *ipv6Mreq) setIfindex(i int) {
+ mreq.Interface = uint32(i)
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_aix_ppc64.go b/vendor/golang.org/x/net/ipv6/zsys_aix_ppc64.go
new file mode 100644
index 0000000..bf44e33
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_aix_ppc64.go
@@ -0,0 +1,103 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_aix.go
+
+// Added for go1.11 compatibility
+// +build aix
+
+package ipv6
+
+const (
+ sysIPV6_UNICAST_HOPS = 0x4
+ sysIPV6_MULTICAST_IF = 0x9
+ sysIPV6_MULTICAST_HOPS = 0xa
+ sysIPV6_MULTICAST_LOOP = 0xb
+ sysIPV6_JOIN_GROUP = 0xc
+ sysIPV6_LEAVE_GROUP = 0xd
+ sysICMP6_FILTER = 0x26
+
+ sysIPV6_CHECKSUM = 0x27
+ sysIPV6_V6ONLY = 0x25
+
+ sysIPV6_RTHDRDSTOPTS = 0x37
+
+ sysIPV6_RECVPKTINFO = 0x23
+ sysIPV6_RECVHOPLIMIT = 0x29
+ sysIPV6_RECVRTHDR = 0x33
+ sysIPV6_RECVHOPOPTS = 0x35
+ sysIPV6_RECVDSTOPTS = 0x38
+
+ sysIPV6_USE_MIN_MTU = 0x2c
+ sysIPV6_RECVPATHMTU = 0x2f
+ sysIPV6_PATHMTU = 0x2e
+
+ sysIPV6_PKTINFO = 0x21
+ sysIPV6_HOPLIMIT = 0x28
+ sysIPV6_NEXTHOP = 0x30
+ sysIPV6_HOPOPTS = 0x34
+ sysIPV6_DSTOPTS = 0x36
+ sysIPV6_RTHDR = 0x32
+
+ sysIPV6_RECVTCLASS = 0x2a
+
+ sysIPV6_TCLASS = 0x2b
+ sysIPV6_DONTFRAG = 0x2d
+
+ sizeofSockaddrStorage = 0x508
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x510
+ sizeofGroupSourceReq = 0xa18
+
+ sizeofICMPv6Filter = 0x20
+)
+
+type sockaddrStorage struct {
+ X__ss_len uint8
+ Family uint8
+ X__ss_pad1 [6]uint8
+ X__ss_align int64
+ X__ss_pad2 [1265]uint8
+ Pad_cgo_0 [7]byte
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Interface uint32
+}
+
+type icmpv6Filter struct {
+ Filt [8]uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Group sockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Group sockaddrStorage
+ Source sockaddrStorage
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_darwin.go b/vendor/golang.org/x/net/ipv6/zsys_darwin.go
new file mode 100644
index 0000000..555744a
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_darwin.go
@@ -0,0 +1,131 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_darwin.go
+
+package ipv6
+
+const (
+ sysIPV6_UNICAST_HOPS = 0x4
+ sysIPV6_MULTICAST_IF = 0x9
+ sysIPV6_MULTICAST_HOPS = 0xa
+ sysIPV6_MULTICAST_LOOP = 0xb
+ sysIPV6_JOIN_GROUP = 0xc
+ sysIPV6_LEAVE_GROUP = 0xd
+
+ sysIPV6_PORTRANGE = 0xe
+ sysICMP6_FILTER = 0x12
+ sysIPV6_2292PKTINFO = 0x13
+ sysIPV6_2292HOPLIMIT = 0x14
+ sysIPV6_2292NEXTHOP = 0x15
+ sysIPV6_2292HOPOPTS = 0x16
+ sysIPV6_2292DSTOPTS = 0x17
+ sysIPV6_2292RTHDR = 0x18
+
+ sysIPV6_2292PKTOPTIONS = 0x19
+
+ sysIPV6_CHECKSUM = 0x1a
+ sysIPV6_V6ONLY = 0x1b
+
+ sysIPV6_IPSEC_POLICY = 0x1c
+
+ sysIPV6_RECVTCLASS = 0x23
+ sysIPV6_TCLASS = 0x24
+
+ sysIPV6_RTHDRDSTOPTS = 0x39
+
+ sysIPV6_RECVPKTINFO = 0x3d
+
+ sysIPV6_RECVHOPLIMIT = 0x25
+ sysIPV6_RECVRTHDR = 0x26
+ sysIPV6_RECVHOPOPTS = 0x27
+ sysIPV6_RECVDSTOPTS = 0x28
+
+ sysIPV6_USE_MIN_MTU = 0x2a
+ sysIPV6_RECVPATHMTU = 0x2b
+
+ sysIPV6_PATHMTU = 0x2c
+
+ sysIPV6_PKTINFO = 0x2e
+ sysIPV6_HOPLIMIT = 0x2f
+ sysIPV6_NEXTHOP = 0x30
+ sysIPV6_HOPOPTS = 0x31
+ sysIPV6_DSTOPTS = 0x32
+ sysIPV6_RTHDR = 0x33
+
+ sysIPV6_AUTOFLOWLABEL = 0x3b
+
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_PREFER_TEMPADDR = 0x3f
+
+ sysIPV6_MSFILTER = 0x4a
+ sysMCAST_JOIN_GROUP = 0x50
+ sysMCAST_LEAVE_GROUP = 0x51
+ sysMCAST_JOIN_SOURCE_GROUP = 0x52
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x53
+ sysMCAST_BLOCK_SOURCE = 0x54
+ sysMCAST_UNBLOCK_SOURCE = 0x55
+
+ sysIPV6_BOUND_IF = 0x7d
+
+ sysIPV6_PORTRANGE_DEFAULT = 0x0
+ sysIPV6_PORTRANGE_HIGH = 0x1
+ sysIPV6_PORTRANGE_LOW = 0x2
+
+ sizeofSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x84
+ sizeofGroupSourceReq = 0x104
+
+ sizeofICMPv6Filter = 0x20
+)
+
+type sockaddrStorage struct {
+ Len uint8
+ Family uint8
+ X__ss_pad1 [6]int8
+ X__ss_align int64
+ X__ss_pad2 [112]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex uint32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Interface uint32
+}
+
+type icmpv6Filter struct {
+ Filt [8]uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [128]byte
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [128]byte
+ Pad_cgo_1 [128]byte
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_dragonfly.go b/vendor/golang.org/x/net/ipv6/zsys_dragonfly.go
new file mode 100644
index 0000000..cf3cc10
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_dragonfly.go
@@ -0,0 +1,88 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_dragonfly.go
+
+package ipv6
+
+const (
+ sysIPV6_UNICAST_HOPS = 0x4
+ sysIPV6_MULTICAST_IF = 0x9
+ sysIPV6_MULTICAST_HOPS = 0xa
+ sysIPV6_MULTICAST_LOOP = 0xb
+ sysIPV6_JOIN_GROUP = 0xc
+ sysIPV6_LEAVE_GROUP = 0xd
+ sysIPV6_PORTRANGE = 0xe
+ sysICMP6_FILTER = 0x12
+
+ sysIPV6_CHECKSUM = 0x1a
+ sysIPV6_V6ONLY = 0x1b
+
+ sysIPV6_IPSEC_POLICY = 0x1c
+
+ sysIPV6_RTHDRDSTOPTS = 0x23
+ sysIPV6_RECVPKTINFO = 0x24
+ sysIPV6_RECVHOPLIMIT = 0x25
+ sysIPV6_RECVRTHDR = 0x26
+ sysIPV6_RECVHOPOPTS = 0x27
+ sysIPV6_RECVDSTOPTS = 0x28
+
+ sysIPV6_USE_MIN_MTU = 0x2a
+ sysIPV6_RECVPATHMTU = 0x2b
+
+ sysIPV6_PATHMTU = 0x2c
+
+ sysIPV6_PKTINFO = 0x2e
+ sysIPV6_HOPLIMIT = 0x2f
+ sysIPV6_NEXTHOP = 0x30
+ sysIPV6_HOPOPTS = 0x31
+ sysIPV6_DSTOPTS = 0x32
+ sysIPV6_RTHDR = 0x33
+
+ sysIPV6_RECVTCLASS = 0x39
+
+ sysIPV6_AUTOFLOWLABEL = 0x3b
+
+ sysIPV6_TCLASS = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_PREFER_TEMPADDR = 0x3f
+
+ sysIPV6_PORTRANGE_DEFAULT = 0x0
+ sysIPV6_PORTRANGE_HIGH = 0x1
+ sysIPV6_PORTRANGE_LOW = 0x2
+
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+
+ sizeofIPv6Mreq = 0x14
+
+ sizeofICMPv6Filter = 0x20
+)
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex uint32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Interface uint32
+}
+
+type icmpv6Filter struct {
+ Filt [8]uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_freebsd_386.go b/vendor/golang.org/x/net/ipv6/zsys_freebsd_386.go
new file mode 100644
index 0000000..73f31b2
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_freebsd_386.go
@@ -0,0 +1,122 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_freebsd.go
+
+package ipv6
+
+const (
+ sysIPV6_UNICAST_HOPS = 0x4
+ sysIPV6_MULTICAST_IF = 0x9
+ sysIPV6_MULTICAST_HOPS = 0xa
+ sysIPV6_MULTICAST_LOOP = 0xb
+ sysIPV6_JOIN_GROUP = 0xc
+ sysIPV6_LEAVE_GROUP = 0xd
+ sysIPV6_PORTRANGE = 0xe
+ sysICMP6_FILTER = 0x12
+
+ sysIPV6_CHECKSUM = 0x1a
+ sysIPV6_V6ONLY = 0x1b
+
+ sysIPV6_IPSEC_POLICY = 0x1c
+
+ sysIPV6_RTHDRDSTOPTS = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x24
+ sysIPV6_RECVHOPLIMIT = 0x25
+ sysIPV6_RECVRTHDR = 0x26
+ sysIPV6_RECVHOPOPTS = 0x27
+ sysIPV6_RECVDSTOPTS = 0x28
+
+ sysIPV6_USE_MIN_MTU = 0x2a
+ sysIPV6_RECVPATHMTU = 0x2b
+
+ sysIPV6_PATHMTU = 0x2c
+
+ sysIPV6_PKTINFO = 0x2e
+ sysIPV6_HOPLIMIT = 0x2f
+ sysIPV6_NEXTHOP = 0x30
+ sysIPV6_HOPOPTS = 0x31
+ sysIPV6_DSTOPTS = 0x32
+ sysIPV6_RTHDR = 0x33
+
+ sysIPV6_RECVTCLASS = 0x39
+
+ sysIPV6_AUTOFLOWLABEL = 0x3b
+
+ sysIPV6_TCLASS = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_PREFER_TEMPADDR = 0x3f
+
+ sysIPV6_BINDANY = 0x40
+
+ sysIPV6_MSFILTER = 0x4a
+
+ sysMCAST_JOIN_GROUP = 0x50
+ sysMCAST_LEAVE_GROUP = 0x51
+ sysMCAST_JOIN_SOURCE_GROUP = 0x52
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x53
+ sysMCAST_BLOCK_SOURCE = 0x54
+ sysMCAST_UNBLOCK_SOURCE = 0x55
+
+ sysIPV6_PORTRANGE_DEFAULT = 0x0
+ sysIPV6_PORTRANGE_HIGH = 0x1
+ sysIPV6_PORTRANGE_LOW = 0x2
+
+ sizeofSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x84
+ sizeofGroupSourceReq = 0x104
+
+ sizeofICMPv6Filter = 0x20
+)
+
+type sockaddrStorage struct {
+ Len uint8
+ Family uint8
+ X__ss_pad1 [6]int8
+ X__ss_align int64
+ X__ss_pad2 [112]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex uint32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Interface uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Group sockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Group sockaddrStorage
+ Source sockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Filt [8]uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_freebsd_amd64.go b/vendor/golang.org/x/net/ipv6/zsys_freebsd_amd64.go
new file mode 100644
index 0000000..490ce7c
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_freebsd_amd64.go
@@ -0,0 +1,124 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_freebsd.go
+
+package ipv6
+
+const (
+ sysIPV6_UNICAST_HOPS = 0x4
+ sysIPV6_MULTICAST_IF = 0x9
+ sysIPV6_MULTICAST_HOPS = 0xa
+ sysIPV6_MULTICAST_LOOP = 0xb
+ sysIPV6_JOIN_GROUP = 0xc
+ sysIPV6_LEAVE_GROUP = 0xd
+ sysIPV6_PORTRANGE = 0xe
+ sysICMP6_FILTER = 0x12
+
+ sysIPV6_CHECKSUM = 0x1a
+ sysIPV6_V6ONLY = 0x1b
+
+ sysIPV6_IPSEC_POLICY = 0x1c
+
+ sysIPV6_RTHDRDSTOPTS = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x24
+ sysIPV6_RECVHOPLIMIT = 0x25
+ sysIPV6_RECVRTHDR = 0x26
+ sysIPV6_RECVHOPOPTS = 0x27
+ sysIPV6_RECVDSTOPTS = 0x28
+
+ sysIPV6_USE_MIN_MTU = 0x2a
+ sysIPV6_RECVPATHMTU = 0x2b
+
+ sysIPV6_PATHMTU = 0x2c
+
+ sysIPV6_PKTINFO = 0x2e
+ sysIPV6_HOPLIMIT = 0x2f
+ sysIPV6_NEXTHOP = 0x30
+ sysIPV6_HOPOPTS = 0x31
+ sysIPV6_DSTOPTS = 0x32
+ sysIPV6_RTHDR = 0x33
+
+ sysIPV6_RECVTCLASS = 0x39
+
+ sysIPV6_AUTOFLOWLABEL = 0x3b
+
+ sysIPV6_TCLASS = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_PREFER_TEMPADDR = 0x3f
+
+ sysIPV6_BINDANY = 0x40
+
+ sysIPV6_MSFILTER = 0x4a
+
+ sysMCAST_JOIN_GROUP = 0x50
+ sysMCAST_LEAVE_GROUP = 0x51
+ sysMCAST_JOIN_SOURCE_GROUP = 0x52
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x53
+ sysMCAST_BLOCK_SOURCE = 0x54
+ sysMCAST_UNBLOCK_SOURCE = 0x55
+
+ sysIPV6_PORTRANGE_DEFAULT = 0x0
+ sysIPV6_PORTRANGE_HIGH = 0x1
+ sysIPV6_PORTRANGE_LOW = 0x2
+
+ sizeofSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPv6Filter = 0x20
+)
+
+type sockaddrStorage struct {
+ Len uint8
+ Family uint8
+ X__ss_pad1 [6]int8
+ X__ss_align int64
+ X__ss_pad2 [112]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex uint32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Interface uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group sockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group sockaddrStorage
+ Source sockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Filt [8]uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_freebsd_arm.go b/vendor/golang.org/x/net/ipv6/zsys_freebsd_arm.go
new file mode 100644
index 0000000..490ce7c
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_freebsd_arm.go
@@ -0,0 +1,124 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_freebsd.go
+
+package ipv6
+
+const (
+ sysIPV6_UNICAST_HOPS = 0x4
+ sysIPV6_MULTICAST_IF = 0x9
+ sysIPV6_MULTICAST_HOPS = 0xa
+ sysIPV6_MULTICAST_LOOP = 0xb
+ sysIPV6_JOIN_GROUP = 0xc
+ sysIPV6_LEAVE_GROUP = 0xd
+ sysIPV6_PORTRANGE = 0xe
+ sysICMP6_FILTER = 0x12
+
+ sysIPV6_CHECKSUM = 0x1a
+ sysIPV6_V6ONLY = 0x1b
+
+ sysIPV6_IPSEC_POLICY = 0x1c
+
+ sysIPV6_RTHDRDSTOPTS = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x24
+ sysIPV6_RECVHOPLIMIT = 0x25
+ sysIPV6_RECVRTHDR = 0x26
+ sysIPV6_RECVHOPOPTS = 0x27
+ sysIPV6_RECVDSTOPTS = 0x28
+
+ sysIPV6_USE_MIN_MTU = 0x2a
+ sysIPV6_RECVPATHMTU = 0x2b
+
+ sysIPV6_PATHMTU = 0x2c
+
+ sysIPV6_PKTINFO = 0x2e
+ sysIPV6_HOPLIMIT = 0x2f
+ sysIPV6_NEXTHOP = 0x30
+ sysIPV6_HOPOPTS = 0x31
+ sysIPV6_DSTOPTS = 0x32
+ sysIPV6_RTHDR = 0x33
+
+ sysIPV6_RECVTCLASS = 0x39
+
+ sysIPV6_AUTOFLOWLABEL = 0x3b
+
+ sysIPV6_TCLASS = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_PREFER_TEMPADDR = 0x3f
+
+ sysIPV6_BINDANY = 0x40
+
+ sysIPV6_MSFILTER = 0x4a
+
+ sysMCAST_JOIN_GROUP = 0x50
+ sysMCAST_LEAVE_GROUP = 0x51
+ sysMCAST_JOIN_SOURCE_GROUP = 0x52
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x53
+ sysMCAST_BLOCK_SOURCE = 0x54
+ sysMCAST_UNBLOCK_SOURCE = 0x55
+
+ sysIPV6_PORTRANGE_DEFAULT = 0x0
+ sysIPV6_PORTRANGE_HIGH = 0x1
+ sysIPV6_PORTRANGE_LOW = 0x2
+
+ sizeofSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPv6Filter = 0x20
+)
+
+type sockaddrStorage struct {
+ Len uint8
+ Family uint8
+ X__ss_pad1 [6]int8
+ X__ss_align int64
+ X__ss_pad2 [112]int8
+}
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex uint32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Interface uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group sockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group sockaddrStorage
+ Source sockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Filt [8]uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_linux_386.go b/vendor/golang.org/x/net/ipv6/zsys_linux_386.go
new file mode 100644
index 0000000..14155de
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_linux_386.go
@@ -0,0 +1,170 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv6
+
+const (
+ sysIPV6_ADDRFORM = 0x1
+ sysIPV6_2292PKTINFO = 0x2
+ sysIPV6_2292HOPOPTS = 0x3
+ sysIPV6_2292DSTOPTS = 0x4
+ sysIPV6_2292RTHDR = 0x5
+ sysIPV6_2292PKTOPTIONS = 0x6
+ sysIPV6_CHECKSUM = 0x7
+ sysIPV6_2292HOPLIMIT = 0x8
+ sysIPV6_NEXTHOP = 0x9
+ sysIPV6_FLOWINFO = 0xb
+
+ sysIPV6_UNICAST_HOPS = 0x10
+ sysIPV6_MULTICAST_IF = 0x11
+ sysIPV6_MULTICAST_HOPS = 0x12
+ sysIPV6_MULTICAST_LOOP = 0x13
+ sysIPV6_ADD_MEMBERSHIP = 0x14
+ sysIPV6_DROP_MEMBERSHIP = 0x15
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIPV6_ROUTER_ALERT = 0x16
+ sysIPV6_MTU_DISCOVER = 0x17
+ sysIPV6_MTU = 0x18
+ sysIPV6_RECVERR = 0x19
+ sysIPV6_V6ONLY = 0x1a
+ sysIPV6_JOIN_ANYCAST = 0x1b
+ sysIPV6_LEAVE_ANYCAST = 0x1c
+
+ sysIPV6_FLOWLABEL_MGR = 0x20
+ sysIPV6_FLOWINFO_SEND = 0x21
+
+ sysIPV6_IPSEC_POLICY = 0x22
+ sysIPV6_XFRM_POLICY = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x31
+ sysIPV6_PKTINFO = 0x32
+ sysIPV6_RECVHOPLIMIT = 0x33
+ sysIPV6_HOPLIMIT = 0x34
+ sysIPV6_RECVHOPOPTS = 0x35
+ sysIPV6_HOPOPTS = 0x36
+ sysIPV6_RTHDRDSTOPTS = 0x37
+ sysIPV6_RECVRTHDR = 0x38
+ sysIPV6_RTHDR = 0x39
+ sysIPV6_RECVDSTOPTS = 0x3a
+ sysIPV6_DSTOPTS = 0x3b
+ sysIPV6_RECVPATHMTU = 0x3c
+ sysIPV6_PATHMTU = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_RECVTCLASS = 0x42
+ sysIPV6_TCLASS = 0x43
+
+ sysIPV6_ADDR_PREFERENCES = 0x48
+
+ sysIPV6_PREFER_SRC_TMP = 0x1
+ sysIPV6_PREFER_SRC_PUBLIC = 0x2
+ sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x100
+ sysIPV6_PREFER_SRC_COA = 0x4
+ sysIPV6_PREFER_SRC_HOME = 0x400
+ sysIPV6_PREFER_SRC_CGA = 0x8
+ sysIPV6_PREFER_SRC_NONCGA = 0x800
+
+ sysIPV6_MINHOPCOUNT = 0x49
+
+ sysIPV6_ORIGDSTADDR = 0x4a
+ sysIPV6_RECVORIGDSTADDR = 0x4a
+ sysIPV6_TRANSPARENT = 0x4b
+ sysIPV6_UNICAST_IF = 0x4c
+
+ sysICMPV6_FILTER = 0x1
+
+ sysICMPV6_FILTER_BLOCK = 0x1
+ sysICMPV6_FILTER_PASS = 0x2
+ sysICMPV6_FILTER_BLOCKOTHERS = 0x3
+ sysICMPV6_FILTER_PASSONLY = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+ sizeofIPv6FlowlabelReq = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x84
+ sizeofGroupSourceReq = 0x104
+
+ sizeofICMPv6Filter = 0x20
+
+ sizeofSockFprog = 0x8
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6FlowlabelReq struct {
+ Dst [16]byte /* in6_addr */
+ Label uint32
+ Action uint8
+ Share uint8
+ Flags uint16
+ Expires uint16
+ Linger uint16
+ X__flr_pad uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type groupReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Data [8]uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [2]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_linux_amd64.go b/vendor/golang.org/x/net/ipv6/zsys_linux_amd64.go
new file mode 100644
index 0000000..9566d76
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_linux_amd64.go
@@ -0,0 +1,172 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv6
+
+const (
+ sysIPV6_ADDRFORM = 0x1
+ sysIPV6_2292PKTINFO = 0x2
+ sysIPV6_2292HOPOPTS = 0x3
+ sysIPV6_2292DSTOPTS = 0x4
+ sysIPV6_2292RTHDR = 0x5
+ sysIPV6_2292PKTOPTIONS = 0x6
+ sysIPV6_CHECKSUM = 0x7
+ sysIPV6_2292HOPLIMIT = 0x8
+ sysIPV6_NEXTHOP = 0x9
+ sysIPV6_FLOWINFO = 0xb
+
+ sysIPV6_UNICAST_HOPS = 0x10
+ sysIPV6_MULTICAST_IF = 0x11
+ sysIPV6_MULTICAST_HOPS = 0x12
+ sysIPV6_MULTICAST_LOOP = 0x13
+ sysIPV6_ADD_MEMBERSHIP = 0x14
+ sysIPV6_DROP_MEMBERSHIP = 0x15
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIPV6_ROUTER_ALERT = 0x16
+ sysIPV6_MTU_DISCOVER = 0x17
+ sysIPV6_MTU = 0x18
+ sysIPV6_RECVERR = 0x19
+ sysIPV6_V6ONLY = 0x1a
+ sysIPV6_JOIN_ANYCAST = 0x1b
+ sysIPV6_LEAVE_ANYCAST = 0x1c
+
+ sysIPV6_FLOWLABEL_MGR = 0x20
+ sysIPV6_FLOWINFO_SEND = 0x21
+
+ sysIPV6_IPSEC_POLICY = 0x22
+ sysIPV6_XFRM_POLICY = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x31
+ sysIPV6_PKTINFO = 0x32
+ sysIPV6_RECVHOPLIMIT = 0x33
+ sysIPV6_HOPLIMIT = 0x34
+ sysIPV6_RECVHOPOPTS = 0x35
+ sysIPV6_HOPOPTS = 0x36
+ sysIPV6_RTHDRDSTOPTS = 0x37
+ sysIPV6_RECVRTHDR = 0x38
+ sysIPV6_RTHDR = 0x39
+ sysIPV6_RECVDSTOPTS = 0x3a
+ sysIPV6_DSTOPTS = 0x3b
+ sysIPV6_RECVPATHMTU = 0x3c
+ sysIPV6_PATHMTU = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_RECVTCLASS = 0x42
+ sysIPV6_TCLASS = 0x43
+
+ sysIPV6_ADDR_PREFERENCES = 0x48
+
+ sysIPV6_PREFER_SRC_TMP = 0x1
+ sysIPV6_PREFER_SRC_PUBLIC = 0x2
+ sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x100
+ sysIPV6_PREFER_SRC_COA = 0x4
+ sysIPV6_PREFER_SRC_HOME = 0x400
+ sysIPV6_PREFER_SRC_CGA = 0x8
+ sysIPV6_PREFER_SRC_NONCGA = 0x800
+
+ sysIPV6_MINHOPCOUNT = 0x49
+
+ sysIPV6_ORIGDSTADDR = 0x4a
+ sysIPV6_RECVORIGDSTADDR = 0x4a
+ sysIPV6_TRANSPARENT = 0x4b
+ sysIPV6_UNICAST_IF = 0x4c
+
+ sysICMPV6_FILTER = 0x1
+
+ sysICMPV6_FILTER_BLOCK = 0x1
+ sysICMPV6_FILTER_PASS = 0x2
+ sysICMPV6_FILTER_BLOCKOTHERS = 0x3
+ sysICMPV6_FILTER_PASSONLY = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+ sizeofIPv6FlowlabelReq = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPv6Filter = 0x20
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6FlowlabelReq struct {
+ Dst [16]byte /* in6_addr */
+ Label uint32
+ Action uint8
+ Share uint8
+ Flags uint16
+ Expires uint16
+ Linger uint16
+ X__flr_pad uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Data [8]uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [6]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_linux_arm.go b/vendor/golang.org/x/net/ipv6/zsys_linux_arm.go
new file mode 100644
index 0000000..14155de
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_linux_arm.go
@@ -0,0 +1,170 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv6
+
+const (
+ sysIPV6_ADDRFORM = 0x1
+ sysIPV6_2292PKTINFO = 0x2
+ sysIPV6_2292HOPOPTS = 0x3
+ sysIPV6_2292DSTOPTS = 0x4
+ sysIPV6_2292RTHDR = 0x5
+ sysIPV6_2292PKTOPTIONS = 0x6
+ sysIPV6_CHECKSUM = 0x7
+ sysIPV6_2292HOPLIMIT = 0x8
+ sysIPV6_NEXTHOP = 0x9
+ sysIPV6_FLOWINFO = 0xb
+
+ sysIPV6_UNICAST_HOPS = 0x10
+ sysIPV6_MULTICAST_IF = 0x11
+ sysIPV6_MULTICAST_HOPS = 0x12
+ sysIPV6_MULTICAST_LOOP = 0x13
+ sysIPV6_ADD_MEMBERSHIP = 0x14
+ sysIPV6_DROP_MEMBERSHIP = 0x15
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIPV6_ROUTER_ALERT = 0x16
+ sysIPV6_MTU_DISCOVER = 0x17
+ sysIPV6_MTU = 0x18
+ sysIPV6_RECVERR = 0x19
+ sysIPV6_V6ONLY = 0x1a
+ sysIPV6_JOIN_ANYCAST = 0x1b
+ sysIPV6_LEAVE_ANYCAST = 0x1c
+
+ sysIPV6_FLOWLABEL_MGR = 0x20
+ sysIPV6_FLOWINFO_SEND = 0x21
+
+ sysIPV6_IPSEC_POLICY = 0x22
+ sysIPV6_XFRM_POLICY = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x31
+ sysIPV6_PKTINFO = 0x32
+ sysIPV6_RECVHOPLIMIT = 0x33
+ sysIPV6_HOPLIMIT = 0x34
+ sysIPV6_RECVHOPOPTS = 0x35
+ sysIPV6_HOPOPTS = 0x36
+ sysIPV6_RTHDRDSTOPTS = 0x37
+ sysIPV6_RECVRTHDR = 0x38
+ sysIPV6_RTHDR = 0x39
+ sysIPV6_RECVDSTOPTS = 0x3a
+ sysIPV6_DSTOPTS = 0x3b
+ sysIPV6_RECVPATHMTU = 0x3c
+ sysIPV6_PATHMTU = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_RECVTCLASS = 0x42
+ sysIPV6_TCLASS = 0x43
+
+ sysIPV6_ADDR_PREFERENCES = 0x48
+
+ sysIPV6_PREFER_SRC_TMP = 0x1
+ sysIPV6_PREFER_SRC_PUBLIC = 0x2
+ sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x100
+ sysIPV6_PREFER_SRC_COA = 0x4
+ sysIPV6_PREFER_SRC_HOME = 0x400
+ sysIPV6_PREFER_SRC_CGA = 0x8
+ sysIPV6_PREFER_SRC_NONCGA = 0x800
+
+ sysIPV6_MINHOPCOUNT = 0x49
+
+ sysIPV6_ORIGDSTADDR = 0x4a
+ sysIPV6_RECVORIGDSTADDR = 0x4a
+ sysIPV6_TRANSPARENT = 0x4b
+ sysIPV6_UNICAST_IF = 0x4c
+
+ sysICMPV6_FILTER = 0x1
+
+ sysICMPV6_FILTER_BLOCK = 0x1
+ sysICMPV6_FILTER_PASS = 0x2
+ sysICMPV6_FILTER_BLOCKOTHERS = 0x3
+ sysICMPV6_FILTER_PASSONLY = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+ sizeofIPv6FlowlabelReq = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x84
+ sizeofGroupSourceReq = 0x104
+
+ sizeofICMPv6Filter = 0x20
+
+ sizeofSockFprog = 0x8
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6FlowlabelReq struct {
+ Dst [16]byte /* in6_addr */
+ Label uint32
+ Action uint8
+ Share uint8
+ Flags uint16
+ Expires uint16
+ Linger uint16
+ X__flr_pad uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type groupReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Data [8]uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [2]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_linux_arm64.go b/vendor/golang.org/x/net/ipv6/zsys_linux_arm64.go
new file mode 100644
index 0000000..9566d76
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_linux_arm64.go
@@ -0,0 +1,172 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv6
+
+const (
+ sysIPV6_ADDRFORM = 0x1
+ sysIPV6_2292PKTINFO = 0x2
+ sysIPV6_2292HOPOPTS = 0x3
+ sysIPV6_2292DSTOPTS = 0x4
+ sysIPV6_2292RTHDR = 0x5
+ sysIPV6_2292PKTOPTIONS = 0x6
+ sysIPV6_CHECKSUM = 0x7
+ sysIPV6_2292HOPLIMIT = 0x8
+ sysIPV6_NEXTHOP = 0x9
+ sysIPV6_FLOWINFO = 0xb
+
+ sysIPV6_UNICAST_HOPS = 0x10
+ sysIPV6_MULTICAST_IF = 0x11
+ sysIPV6_MULTICAST_HOPS = 0x12
+ sysIPV6_MULTICAST_LOOP = 0x13
+ sysIPV6_ADD_MEMBERSHIP = 0x14
+ sysIPV6_DROP_MEMBERSHIP = 0x15
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIPV6_ROUTER_ALERT = 0x16
+ sysIPV6_MTU_DISCOVER = 0x17
+ sysIPV6_MTU = 0x18
+ sysIPV6_RECVERR = 0x19
+ sysIPV6_V6ONLY = 0x1a
+ sysIPV6_JOIN_ANYCAST = 0x1b
+ sysIPV6_LEAVE_ANYCAST = 0x1c
+
+ sysIPV6_FLOWLABEL_MGR = 0x20
+ sysIPV6_FLOWINFO_SEND = 0x21
+
+ sysIPV6_IPSEC_POLICY = 0x22
+ sysIPV6_XFRM_POLICY = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x31
+ sysIPV6_PKTINFO = 0x32
+ sysIPV6_RECVHOPLIMIT = 0x33
+ sysIPV6_HOPLIMIT = 0x34
+ sysIPV6_RECVHOPOPTS = 0x35
+ sysIPV6_HOPOPTS = 0x36
+ sysIPV6_RTHDRDSTOPTS = 0x37
+ sysIPV6_RECVRTHDR = 0x38
+ sysIPV6_RTHDR = 0x39
+ sysIPV6_RECVDSTOPTS = 0x3a
+ sysIPV6_DSTOPTS = 0x3b
+ sysIPV6_RECVPATHMTU = 0x3c
+ sysIPV6_PATHMTU = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_RECVTCLASS = 0x42
+ sysIPV6_TCLASS = 0x43
+
+ sysIPV6_ADDR_PREFERENCES = 0x48
+
+ sysIPV6_PREFER_SRC_TMP = 0x1
+ sysIPV6_PREFER_SRC_PUBLIC = 0x2
+ sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x100
+ sysIPV6_PREFER_SRC_COA = 0x4
+ sysIPV6_PREFER_SRC_HOME = 0x400
+ sysIPV6_PREFER_SRC_CGA = 0x8
+ sysIPV6_PREFER_SRC_NONCGA = 0x800
+
+ sysIPV6_MINHOPCOUNT = 0x49
+
+ sysIPV6_ORIGDSTADDR = 0x4a
+ sysIPV6_RECVORIGDSTADDR = 0x4a
+ sysIPV6_TRANSPARENT = 0x4b
+ sysIPV6_UNICAST_IF = 0x4c
+
+ sysICMPV6_FILTER = 0x1
+
+ sysICMPV6_FILTER_BLOCK = 0x1
+ sysICMPV6_FILTER_PASS = 0x2
+ sysICMPV6_FILTER_BLOCKOTHERS = 0x3
+ sysICMPV6_FILTER_PASSONLY = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+ sizeofIPv6FlowlabelReq = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPv6Filter = 0x20
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6FlowlabelReq struct {
+ Dst [16]byte /* in6_addr */
+ Label uint32
+ Action uint8
+ Share uint8
+ Flags uint16
+ Expires uint16
+ Linger uint16
+ X__flr_pad uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Data [8]uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [6]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_linux_mips.go b/vendor/golang.org/x/net/ipv6/zsys_linux_mips.go
new file mode 100644
index 0000000..14155de
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_linux_mips.go
@@ -0,0 +1,170 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv6
+
+const (
+ sysIPV6_ADDRFORM = 0x1
+ sysIPV6_2292PKTINFO = 0x2
+ sysIPV6_2292HOPOPTS = 0x3
+ sysIPV6_2292DSTOPTS = 0x4
+ sysIPV6_2292RTHDR = 0x5
+ sysIPV6_2292PKTOPTIONS = 0x6
+ sysIPV6_CHECKSUM = 0x7
+ sysIPV6_2292HOPLIMIT = 0x8
+ sysIPV6_NEXTHOP = 0x9
+ sysIPV6_FLOWINFO = 0xb
+
+ sysIPV6_UNICAST_HOPS = 0x10
+ sysIPV6_MULTICAST_IF = 0x11
+ sysIPV6_MULTICAST_HOPS = 0x12
+ sysIPV6_MULTICAST_LOOP = 0x13
+ sysIPV6_ADD_MEMBERSHIP = 0x14
+ sysIPV6_DROP_MEMBERSHIP = 0x15
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIPV6_ROUTER_ALERT = 0x16
+ sysIPV6_MTU_DISCOVER = 0x17
+ sysIPV6_MTU = 0x18
+ sysIPV6_RECVERR = 0x19
+ sysIPV6_V6ONLY = 0x1a
+ sysIPV6_JOIN_ANYCAST = 0x1b
+ sysIPV6_LEAVE_ANYCAST = 0x1c
+
+ sysIPV6_FLOWLABEL_MGR = 0x20
+ sysIPV6_FLOWINFO_SEND = 0x21
+
+ sysIPV6_IPSEC_POLICY = 0x22
+ sysIPV6_XFRM_POLICY = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x31
+ sysIPV6_PKTINFO = 0x32
+ sysIPV6_RECVHOPLIMIT = 0x33
+ sysIPV6_HOPLIMIT = 0x34
+ sysIPV6_RECVHOPOPTS = 0x35
+ sysIPV6_HOPOPTS = 0x36
+ sysIPV6_RTHDRDSTOPTS = 0x37
+ sysIPV6_RECVRTHDR = 0x38
+ sysIPV6_RTHDR = 0x39
+ sysIPV6_RECVDSTOPTS = 0x3a
+ sysIPV6_DSTOPTS = 0x3b
+ sysIPV6_RECVPATHMTU = 0x3c
+ sysIPV6_PATHMTU = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_RECVTCLASS = 0x42
+ sysIPV6_TCLASS = 0x43
+
+ sysIPV6_ADDR_PREFERENCES = 0x48
+
+ sysIPV6_PREFER_SRC_TMP = 0x1
+ sysIPV6_PREFER_SRC_PUBLIC = 0x2
+ sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x100
+ sysIPV6_PREFER_SRC_COA = 0x4
+ sysIPV6_PREFER_SRC_HOME = 0x400
+ sysIPV6_PREFER_SRC_CGA = 0x8
+ sysIPV6_PREFER_SRC_NONCGA = 0x800
+
+ sysIPV6_MINHOPCOUNT = 0x49
+
+ sysIPV6_ORIGDSTADDR = 0x4a
+ sysIPV6_RECVORIGDSTADDR = 0x4a
+ sysIPV6_TRANSPARENT = 0x4b
+ sysIPV6_UNICAST_IF = 0x4c
+
+ sysICMPV6_FILTER = 0x1
+
+ sysICMPV6_FILTER_BLOCK = 0x1
+ sysICMPV6_FILTER_PASS = 0x2
+ sysICMPV6_FILTER_BLOCKOTHERS = 0x3
+ sysICMPV6_FILTER_PASSONLY = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+ sizeofIPv6FlowlabelReq = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x84
+ sizeofGroupSourceReq = 0x104
+
+ sizeofICMPv6Filter = 0x20
+
+ sizeofSockFprog = 0x8
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6FlowlabelReq struct {
+ Dst [16]byte /* in6_addr */
+ Label uint32
+ Action uint8
+ Share uint8
+ Flags uint16
+ Expires uint16
+ Linger uint16
+ X__flr_pad uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type groupReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Data [8]uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [2]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_linux_mips64.go b/vendor/golang.org/x/net/ipv6/zsys_linux_mips64.go
new file mode 100644
index 0000000..9566d76
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_linux_mips64.go
@@ -0,0 +1,172 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv6
+
+const (
+ sysIPV6_ADDRFORM = 0x1
+ sysIPV6_2292PKTINFO = 0x2
+ sysIPV6_2292HOPOPTS = 0x3
+ sysIPV6_2292DSTOPTS = 0x4
+ sysIPV6_2292RTHDR = 0x5
+ sysIPV6_2292PKTOPTIONS = 0x6
+ sysIPV6_CHECKSUM = 0x7
+ sysIPV6_2292HOPLIMIT = 0x8
+ sysIPV6_NEXTHOP = 0x9
+ sysIPV6_FLOWINFO = 0xb
+
+ sysIPV6_UNICAST_HOPS = 0x10
+ sysIPV6_MULTICAST_IF = 0x11
+ sysIPV6_MULTICAST_HOPS = 0x12
+ sysIPV6_MULTICAST_LOOP = 0x13
+ sysIPV6_ADD_MEMBERSHIP = 0x14
+ sysIPV6_DROP_MEMBERSHIP = 0x15
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIPV6_ROUTER_ALERT = 0x16
+ sysIPV6_MTU_DISCOVER = 0x17
+ sysIPV6_MTU = 0x18
+ sysIPV6_RECVERR = 0x19
+ sysIPV6_V6ONLY = 0x1a
+ sysIPV6_JOIN_ANYCAST = 0x1b
+ sysIPV6_LEAVE_ANYCAST = 0x1c
+
+ sysIPV6_FLOWLABEL_MGR = 0x20
+ sysIPV6_FLOWINFO_SEND = 0x21
+
+ sysIPV6_IPSEC_POLICY = 0x22
+ sysIPV6_XFRM_POLICY = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x31
+ sysIPV6_PKTINFO = 0x32
+ sysIPV6_RECVHOPLIMIT = 0x33
+ sysIPV6_HOPLIMIT = 0x34
+ sysIPV6_RECVHOPOPTS = 0x35
+ sysIPV6_HOPOPTS = 0x36
+ sysIPV6_RTHDRDSTOPTS = 0x37
+ sysIPV6_RECVRTHDR = 0x38
+ sysIPV6_RTHDR = 0x39
+ sysIPV6_RECVDSTOPTS = 0x3a
+ sysIPV6_DSTOPTS = 0x3b
+ sysIPV6_RECVPATHMTU = 0x3c
+ sysIPV6_PATHMTU = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_RECVTCLASS = 0x42
+ sysIPV6_TCLASS = 0x43
+
+ sysIPV6_ADDR_PREFERENCES = 0x48
+
+ sysIPV6_PREFER_SRC_TMP = 0x1
+ sysIPV6_PREFER_SRC_PUBLIC = 0x2
+ sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x100
+ sysIPV6_PREFER_SRC_COA = 0x4
+ sysIPV6_PREFER_SRC_HOME = 0x400
+ sysIPV6_PREFER_SRC_CGA = 0x8
+ sysIPV6_PREFER_SRC_NONCGA = 0x800
+
+ sysIPV6_MINHOPCOUNT = 0x49
+
+ sysIPV6_ORIGDSTADDR = 0x4a
+ sysIPV6_RECVORIGDSTADDR = 0x4a
+ sysIPV6_TRANSPARENT = 0x4b
+ sysIPV6_UNICAST_IF = 0x4c
+
+ sysICMPV6_FILTER = 0x1
+
+ sysICMPV6_FILTER_BLOCK = 0x1
+ sysICMPV6_FILTER_PASS = 0x2
+ sysICMPV6_FILTER_BLOCKOTHERS = 0x3
+ sysICMPV6_FILTER_PASSONLY = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+ sizeofIPv6FlowlabelReq = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPv6Filter = 0x20
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6FlowlabelReq struct {
+ Dst [16]byte /* in6_addr */
+ Label uint32
+ Action uint8
+ Share uint8
+ Flags uint16
+ Expires uint16
+ Linger uint16
+ X__flr_pad uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Data [8]uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [6]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_linux_mips64le.go b/vendor/golang.org/x/net/ipv6/zsys_linux_mips64le.go
new file mode 100644
index 0000000..9566d76
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_linux_mips64le.go
@@ -0,0 +1,172 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv6
+
+const (
+ sysIPV6_ADDRFORM = 0x1
+ sysIPV6_2292PKTINFO = 0x2
+ sysIPV6_2292HOPOPTS = 0x3
+ sysIPV6_2292DSTOPTS = 0x4
+ sysIPV6_2292RTHDR = 0x5
+ sysIPV6_2292PKTOPTIONS = 0x6
+ sysIPV6_CHECKSUM = 0x7
+ sysIPV6_2292HOPLIMIT = 0x8
+ sysIPV6_NEXTHOP = 0x9
+ sysIPV6_FLOWINFO = 0xb
+
+ sysIPV6_UNICAST_HOPS = 0x10
+ sysIPV6_MULTICAST_IF = 0x11
+ sysIPV6_MULTICAST_HOPS = 0x12
+ sysIPV6_MULTICAST_LOOP = 0x13
+ sysIPV6_ADD_MEMBERSHIP = 0x14
+ sysIPV6_DROP_MEMBERSHIP = 0x15
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIPV6_ROUTER_ALERT = 0x16
+ sysIPV6_MTU_DISCOVER = 0x17
+ sysIPV6_MTU = 0x18
+ sysIPV6_RECVERR = 0x19
+ sysIPV6_V6ONLY = 0x1a
+ sysIPV6_JOIN_ANYCAST = 0x1b
+ sysIPV6_LEAVE_ANYCAST = 0x1c
+
+ sysIPV6_FLOWLABEL_MGR = 0x20
+ sysIPV6_FLOWINFO_SEND = 0x21
+
+ sysIPV6_IPSEC_POLICY = 0x22
+ sysIPV6_XFRM_POLICY = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x31
+ sysIPV6_PKTINFO = 0x32
+ sysIPV6_RECVHOPLIMIT = 0x33
+ sysIPV6_HOPLIMIT = 0x34
+ sysIPV6_RECVHOPOPTS = 0x35
+ sysIPV6_HOPOPTS = 0x36
+ sysIPV6_RTHDRDSTOPTS = 0x37
+ sysIPV6_RECVRTHDR = 0x38
+ sysIPV6_RTHDR = 0x39
+ sysIPV6_RECVDSTOPTS = 0x3a
+ sysIPV6_DSTOPTS = 0x3b
+ sysIPV6_RECVPATHMTU = 0x3c
+ sysIPV6_PATHMTU = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_RECVTCLASS = 0x42
+ sysIPV6_TCLASS = 0x43
+
+ sysIPV6_ADDR_PREFERENCES = 0x48
+
+ sysIPV6_PREFER_SRC_TMP = 0x1
+ sysIPV6_PREFER_SRC_PUBLIC = 0x2
+ sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x100
+ sysIPV6_PREFER_SRC_COA = 0x4
+ sysIPV6_PREFER_SRC_HOME = 0x400
+ sysIPV6_PREFER_SRC_CGA = 0x8
+ sysIPV6_PREFER_SRC_NONCGA = 0x800
+
+ sysIPV6_MINHOPCOUNT = 0x49
+
+ sysIPV6_ORIGDSTADDR = 0x4a
+ sysIPV6_RECVORIGDSTADDR = 0x4a
+ sysIPV6_TRANSPARENT = 0x4b
+ sysIPV6_UNICAST_IF = 0x4c
+
+ sysICMPV6_FILTER = 0x1
+
+ sysICMPV6_FILTER_BLOCK = 0x1
+ sysICMPV6_FILTER_PASS = 0x2
+ sysICMPV6_FILTER_BLOCKOTHERS = 0x3
+ sysICMPV6_FILTER_PASSONLY = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+ sizeofIPv6FlowlabelReq = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPv6Filter = 0x20
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6FlowlabelReq struct {
+ Dst [16]byte /* in6_addr */
+ Label uint32
+ Action uint8
+ Share uint8
+ Flags uint16
+ Expires uint16
+ Linger uint16
+ X__flr_pad uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Data [8]uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [6]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_linux_mipsle.go b/vendor/golang.org/x/net/ipv6/zsys_linux_mipsle.go
new file mode 100644
index 0000000..14155de
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_linux_mipsle.go
@@ -0,0 +1,170 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv6
+
+const (
+ sysIPV6_ADDRFORM = 0x1
+ sysIPV6_2292PKTINFO = 0x2
+ sysIPV6_2292HOPOPTS = 0x3
+ sysIPV6_2292DSTOPTS = 0x4
+ sysIPV6_2292RTHDR = 0x5
+ sysIPV6_2292PKTOPTIONS = 0x6
+ sysIPV6_CHECKSUM = 0x7
+ sysIPV6_2292HOPLIMIT = 0x8
+ sysIPV6_NEXTHOP = 0x9
+ sysIPV6_FLOWINFO = 0xb
+
+ sysIPV6_UNICAST_HOPS = 0x10
+ sysIPV6_MULTICAST_IF = 0x11
+ sysIPV6_MULTICAST_HOPS = 0x12
+ sysIPV6_MULTICAST_LOOP = 0x13
+ sysIPV6_ADD_MEMBERSHIP = 0x14
+ sysIPV6_DROP_MEMBERSHIP = 0x15
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIPV6_ROUTER_ALERT = 0x16
+ sysIPV6_MTU_DISCOVER = 0x17
+ sysIPV6_MTU = 0x18
+ sysIPV6_RECVERR = 0x19
+ sysIPV6_V6ONLY = 0x1a
+ sysIPV6_JOIN_ANYCAST = 0x1b
+ sysIPV6_LEAVE_ANYCAST = 0x1c
+
+ sysIPV6_FLOWLABEL_MGR = 0x20
+ sysIPV6_FLOWINFO_SEND = 0x21
+
+ sysIPV6_IPSEC_POLICY = 0x22
+ sysIPV6_XFRM_POLICY = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x31
+ sysIPV6_PKTINFO = 0x32
+ sysIPV6_RECVHOPLIMIT = 0x33
+ sysIPV6_HOPLIMIT = 0x34
+ sysIPV6_RECVHOPOPTS = 0x35
+ sysIPV6_HOPOPTS = 0x36
+ sysIPV6_RTHDRDSTOPTS = 0x37
+ sysIPV6_RECVRTHDR = 0x38
+ sysIPV6_RTHDR = 0x39
+ sysIPV6_RECVDSTOPTS = 0x3a
+ sysIPV6_DSTOPTS = 0x3b
+ sysIPV6_RECVPATHMTU = 0x3c
+ sysIPV6_PATHMTU = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_RECVTCLASS = 0x42
+ sysIPV6_TCLASS = 0x43
+
+ sysIPV6_ADDR_PREFERENCES = 0x48
+
+ sysIPV6_PREFER_SRC_TMP = 0x1
+ sysIPV6_PREFER_SRC_PUBLIC = 0x2
+ sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x100
+ sysIPV6_PREFER_SRC_COA = 0x4
+ sysIPV6_PREFER_SRC_HOME = 0x400
+ sysIPV6_PREFER_SRC_CGA = 0x8
+ sysIPV6_PREFER_SRC_NONCGA = 0x800
+
+ sysIPV6_MINHOPCOUNT = 0x49
+
+ sysIPV6_ORIGDSTADDR = 0x4a
+ sysIPV6_RECVORIGDSTADDR = 0x4a
+ sysIPV6_TRANSPARENT = 0x4b
+ sysIPV6_UNICAST_IF = 0x4c
+
+ sysICMPV6_FILTER = 0x1
+
+ sysICMPV6_FILTER_BLOCK = 0x1
+ sysICMPV6_FILTER_PASS = 0x2
+ sysICMPV6_FILTER_BLOCKOTHERS = 0x3
+ sysICMPV6_FILTER_PASSONLY = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+ sizeofIPv6FlowlabelReq = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x84
+ sizeofGroupSourceReq = 0x104
+
+ sizeofICMPv6Filter = 0x20
+
+ sizeofSockFprog = 0x8
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6FlowlabelReq struct {
+ Dst [16]byte /* in6_addr */
+ Label uint32
+ Action uint8
+ Share uint8
+ Flags uint16
+ Expires uint16
+ Linger uint16
+ X__flr_pad uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type groupReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Data [8]uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [2]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_linux_ppc.go b/vendor/golang.org/x/net/ipv6/zsys_linux_ppc.go
new file mode 100644
index 0000000..a51e142
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_linux_ppc.go
@@ -0,0 +1,170 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv6
+
+const (
+ sysIPV6_ADDRFORM = 0x1
+ sysIPV6_2292PKTINFO = 0x2
+ sysIPV6_2292HOPOPTS = 0x3
+ sysIPV6_2292DSTOPTS = 0x4
+ sysIPV6_2292RTHDR = 0x5
+ sysIPV6_2292PKTOPTIONS = 0x6
+ sysIPV6_CHECKSUM = 0x7
+ sysIPV6_2292HOPLIMIT = 0x8
+ sysIPV6_NEXTHOP = 0x9
+ sysIPV6_FLOWINFO = 0xb
+
+ sysIPV6_UNICAST_HOPS = 0x10
+ sysIPV6_MULTICAST_IF = 0x11
+ sysIPV6_MULTICAST_HOPS = 0x12
+ sysIPV6_MULTICAST_LOOP = 0x13
+ sysIPV6_ADD_MEMBERSHIP = 0x14
+ sysIPV6_DROP_MEMBERSHIP = 0x15
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIPV6_ROUTER_ALERT = 0x16
+ sysIPV6_MTU_DISCOVER = 0x17
+ sysIPV6_MTU = 0x18
+ sysIPV6_RECVERR = 0x19
+ sysIPV6_V6ONLY = 0x1a
+ sysIPV6_JOIN_ANYCAST = 0x1b
+ sysIPV6_LEAVE_ANYCAST = 0x1c
+
+ sysIPV6_FLOWLABEL_MGR = 0x20
+ sysIPV6_FLOWINFO_SEND = 0x21
+
+ sysIPV6_IPSEC_POLICY = 0x22
+ sysIPV6_XFRM_POLICY = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x31
+ sysIPV6_PKTINFO = 0x32
+ sysIPV6_RECVHOPLIMIT = 0x33
+ sysIPV6_HOPLIMIT = 0x34
+ sysIPV6_RECVHOPOPTS = 0x35
+ sysIPV6_HOPOPTS = 0x36
+ sysIPV6_RTHDRDSTOPTS = 0x37
+ sysIPV6_RECVRTHDR = 0x38
+ sysIPV6_RTHDR = 0x39
+ sysIPV6_RECVDSTOPTS = 0x3a
+ sysIPV6_DSTOPTS = 0x3b
+ sysIPV6_RECVPATHMTU = 0x3c
+ sysIPV6_PATHMTU = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_RECVTCLASS = 0x42
+ sysIPV6_TCLASS = 0x43
+
+ sysIPV6_ADDR_PREFERENCES = 0x48
+
+ sysIPV6_PREFER_SRC_TMP = 0x1
+ sysIPV6_PREFER_SRC_PUBLIC = 0x2
+ sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x100
+ sysIPV6_PREFER_SRC_COA = 0x4
+ sysIPV6_PREFER_SRC_HOME = 0x400
+ sysIPV6_PREFER_SRC_CGA = 0x8
+ sysIPV6_PREFER_SRC_NONCGA = 0x800
+
+ sysIPV6_MINHOPCOUNT = 0x49
+
+ sysIPV6_ORIGDSTADDR = 0x4a
+ sysIPV6_RECVORIGDSTADDR = 0x4a
+ sysIPV6_TRANSPARENT = 0x4b
+ sysIPV6_UNICAST_IF = 0x4c
+
+ sysICMPV6_FILTER = 0x1
+
+ sysICMPV6_FILTER_BLOCK = 0x1
+ sysICMPV6_FILTER_PASS = 0x2
+ sysICMPV6_FILTER_BLOCKOTHERS = 0x3
+ sysICMPV6_FILTER_PASSONLY = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+ sizeofIPv6FlowlabelReq = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x84
+ sizeofGroupSourceReq = 0x104
+
+ sizeofICMPv6Filter = 0x20
+
+ sizeofSockFprog = 0x8
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]uint8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6FlowlabelReq struct {
+ Dst [16]byte /* in6_addr */
+ Label uint32
+ Action uint8
+ Share uint8
+ Flags uint16
+ Expires uint16
+ Linger uint16
+ X__flr_pad uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type groupReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Data [8]uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [2]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_linux_ppc64.go b/vendor/golang.org/x/net/ipv6/zsys_linux_ppc64.go
new file mode 100644
index 0000000..9566d76
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_linux_ppc64.go
@@ -0,0 +1,172 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv6
+
+const (
+ sysIPV6_ADDRFORM = 0x1
+ sysIPV6_2292PKTINFO = 0x2
+ sysIPV6_2292HOPOPTS = 0x3
+ sysIPV6_2292DSTOPTS = 0x4
+ sysIPV6_2292RTHDR = 0x5
+ sysIPV6_2292PKTOPTIONS = 0x6
+ sysIPV6_CHECKSUM = 0x7
+ sysIPV6_2292HOPLIMIT = 0x8
+ sysIPV6_NEXTHOP = 0x9
+ sysIPV6_FLOWINFO = 0xb
+
+ sysIPV6_UNICAST_HOPS = 0x10
+ sysIPV6_MULTICAST_IF = 0x11
+ sysIPV6_MULTICAST_HOPS = 0x12
+ sysIPV6_MULTICAST_LOOP = 0x13
+ sysIPV6_ADD_MEMBERSHIP = 0x14
+ sysIPV6_DROP_MEMBERSHIP = 0x15
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIPV6_ROUTER_ALERT = 0x16
+ sysIPV6_MTU_DISCOVER = 0x17
+ sysIPV6_MTU = 0x18
+ sysIPV6_RECVERR = 0x19
+ sysIPV6_V6ONLY = 0x1a
+ sysIPV6_JOIN_ANYCAST = 0x1b
+ sysIPV6_LEAVE_ANYCAST = 0x1c
+
+ sysIPV6_FLOWLABEL_MGR = 0x20
+ sysIPV6_FLOWINFO_SEND = 0x21
+
+ sysIPV6_IPSEC_POLICY = 0x22
+ sysIPV6_XFRM_POLICY = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x31
+ sysIPV6_PKTINFO = 0x32
+ sysIPV6_RECVHOPLIMIT = 0x33
+ sysIPV6_HOPLIMIT = 0x34
+ sysIPV6_RECVHOPOPTS = 0x35
+ sysIPV6_HOPOPTS = 0x36
+ sysIPV6_RTHDRDSTOPTS = 0x37
+ sysIPV6_RECVRTHDR = 0x38
+ sysIPV6_RTHDR = 0x39
+ sysIPV6_RECVDSTOPTS = 0x3a
+ sysIPV6_DSTOPTS = 0x3b
+ sysIPV6_RECVPATHMTU = 0x3c
+ sysIPV6_PATHMTU = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_RECVTCLASS = 0x42
+ sysIPV6_TCLASS = 0x43
+
+ sysIPV6_ADDR_PREFERENCES = 0x48
+
+ sysIPV6_PREFER_SRC_TMP = 0x1
+ sysIPV6_PREFER_SRC_PUBLIC = 0x2
+ sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x100
+ sysIPV6_PREFER_SRC_COA = 0x4
+ sysIPV6_PREFER_SRC_HOME = 0x400
+ sysIPV6_PREFER_SRC_CGA = 0x8
+ sysIPV6_PREFER_SRC_NONCGA = 0x800
+
+ sysIPV6_MINHOPCOUNT = 0x49
+
+ sysIPV6_ORIGDSTADDR = 0x4a
+ sysIPV6_RECVORIGDSTADDR = 0x4a
+ sysIPV6_TRANSPARENT = 0x4b
+ sysIPV6_UNICAST_IF = 0x4c
+
+ sysICMPV6_FILTER = 0x1
+
+ sysICMPV6_FILTER_BLOCK = 0x1
+ sysICMPV6_FILTER_PASS = 0x2
+ sysICMPV6_FILTER_BLOCKOTHERS = 0x3
+ sysICMPV6_FILTER_PASSONLY = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+ sizeofIPv6FlowlabelReq = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPv6Filter = 0x20
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6FlowlabelReq struct {
+ Dst [16]byte /* in6_addr */
+ Label uint32
+ Action uint8
+ Share uint8
+ Flags uint16
+ Expires uint16
+ Linger uint16
+ X__flr_pad uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Data [8]uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [6]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_linux_ppc64le.go b/vendor/golang.org/x/net/ipv6/zsys_linux_ppc64le.go
new file mode 100644
index 0000000..9566d76
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_linux_ppc64le.go
@@ -0,0 +1,172 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv6
+
+const (
+ sysIPV6_ADDRFORM = 0x1
+ sysIPV6_2292PKTINFO = 0x2
+ sysIPV6_2292HOPOPTS = 0x3
+ sysIPV6_2292DSTOPTS = 0x4
+ sysIPV6_2292RTHDR = 0x5
+ sysIPV6_2292PKTOPTIONS = 0x6
+ sysIPV6_CHECKSUM = 0x7
+ sysIPV6_2292HOPLIMIT = 0x8
+ sysIPV6_NEXTHOP = 0x9
+ sysIPV6_FLOWINFO = 0xb
+
+ sysIPV6_UNICAST_HOPS = 0x10
+ sysIPV6_MULTICAST_IF = 0x11
+ sysIPV6_MULTICAST_HOPS = 0x12
+ sysIPV6_MULTICAST_LOOP = 0x13
+ sysIPV6_ADD_MEMBERSHIP = 0x14
+ sysIPV6_DROP_MEMBERSHIP = 0x15
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIPV6_ROUTER_ALERT = 0x16
+ sysIPV6_MTU_DISCOVER = 0x17
+ sysIPV6_MTU = 0x18
+ sysIPV6_RECVERR = 0x19
+ sysIPV6_V6ONLY = 0x1a
+ sysIPV6_JOIN_ANYCAST = 0x1b
+ sysIPV6_LEAVE_ANYCAST = 0x1c
+
+ sysIPV6_FLOWLABEL_MGR = 0x20
+ sysIPV6_FLOWINFO_SEND = 0x21
+
+ sysIPV6_IPSEC_POLICY = 0x22
+ sysIPV6_XFRM_POLICY = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x31
+ sysIPV6_PKTINFO = 0x32
+ sysIPV6_RECVHOPLIMIT = 0x33
+ sysIPV6_HOPLIMIT = 0x34
+ sysIPV6_RECVHOPOPTS = 0x35
+ sysIPV6_HOPOPTS = 0x36
+ sysIPV6_RTHDRDSTOPTS = 0x37
+ sysIPV6_RECVRTHDR = 0x38
+ sysIPV6_RTHDR = 0x39
+ sysIPV6_RECVDSTOPTS = 0x3a
+ sysIPV6_DSTOPTS = 0x3b
+ sysIPV6_RECVPATHMTU = 0x3c
+ sysIPV6_PATHMTU = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_RECVTCLASS = 0x42
+ sysIPV6_TCLASS = 0x43
+
+ sysIPV6_ADDR_PREFERENCES = 0x48
+
+ sysIPV6_PREFER_SRC_TMP = 0x1
+ sysIPV6_PREFER_SRC_PUBLIC = 0x2
+ sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x100
+ sysIPV6_PREFER_SRC_COA = 0x4
+ sysIPV6_PREFER_SRC_HOME = 0x400
+ sysIPV6_PREFER_SRC_CGA = 0x8
+ sysIPV6_PREFER_SRC_NONCGA = 0x800
+
+ sysIPV6_MINHOPCOUNT = 0x49
+
+ sysIPV6_ORIGDSTADDR = 0x4a
+ sysIPV6_RECVORIGDSTADDR = 0x4a
+ sysIPV6_TRANSPARENT = 0x4b
+ sysIPV6_UNICAST_IF = 0x4c
+
+ sysICMPV6_FILTER = 0x1
+
+ sysICMPV6_FILTER_BLOCK = 0x1
+ sysICMPV6_FILTER_PASS = 0x2
+ sysICMPV6_FILTER_BLOCKOTHERS = 0x3
+ sysICMPV6_FILTER_PASSONLY = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+ sizeofIPv6FlowlabelReq = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPv6Filter = 0x20
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6FlowlabelReq struct {
+ Dst [16]byte /* in6_addr */
+ Label uint32
+ Action uint8
+ Share uint8
+ Flags uint16
+ Expires uint16
+ Linger uint16
+ X__flr_pad uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Data [8]uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [6]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_linux_riscv64.go b/vendor/golang.org/x/net/ipv6/zsys_linux_riscv64.go
new file mode 100644
index 0000000..1ee237b
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_linux_riscv64.go
@@ -0,0 +1,173 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+// +build riscv64
+
+package ipv6
+
+const (
+ sysIPV6_ADDRFORM = 0x1
+ sysIPV6_2292PKTINFO = 0x2
+ sysIPV6_2292HOPOPTS = 0x3
+ sysIPV6_2292DSTOPTS = 0x4
+ sysIPV6_2292RTHDR = 0x5
+ sysIPV6_2292PKTOPTIONS = 0x6
+ sysIPV6_CHECKSUM = 0x7
+ sysIPV6_2292HOPLIMIT = 0x8
+ sysIPV6_NEXTHOP = 0x9
+ sysIPV6_FLOWINFO = 0xb
+
+ sysIPV6_UNICAST_HOPS = 0x10
+ sysIPV6_MULTICAST_IF = 0x11
+ sysIPV6_MULTICAST_HOPS = 0x12
+ sysIPV6_MULTICAST_LOOP = 0x13
+ sysIPV6_ADD_MEMBERSHIP = 0x14
+ sysIPV6_DROP_MEMBERSHIP = 0x15
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIPV6_ROUTER_ALERT = 0x16
+ sysIPV6_MTU_DISCOVER = 0x17
+ sysIPV6_MTU = 0x18
+ sysIPV6_RECVERR = 0x19
+ sysIPV6_V6ONLY = 0x1a
+ sysIPV6_JOIN_ANYCAST = 0x1b
+ sysIPV6_LEAVE_ANYCAST = 0x1c
+
+ sysIPV6_FLOWLABEL_MGR = 0x20
+ sysIPV6_FLOWINFO_SEND = 0x21
+
+ sysIPV6_IPSEC_POLICY = 0x22
+ sysIPV6_XFRM_POLICY = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x31
+ sysIPV6_PKTINFO = 0x32
+ sysIPV6_RECVHOPLIMIT = 0x33
+ sysIPV6_HOPLIMIT = 0x34
+ sysIPV6_RECVHOPOPTS = 0x35
+ sysIPV6_HOPOPTS = 0x36
+ sysIPV6_RTHDRDSTOPTS = 0x37
+ sysIPV6_RECVRTHDR = 0x38
+ sysIPV6_RTHDR = 0x39
+ sysIPV6_RECVDSTOPTS = 0x3a
+ sysIPV6_DSTOPTS = 0x3b
+ sysIPV6_RECVPATHMTU = 0x3c
+ sysIPV6_PATHMTU = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_RECVTCLASS = 0x42
+ sysIPV6_TCLASS = 0x43
+
+ sysIPV6_ADDR_PREFERENCES = 0x48
+
+ sysIPV6_PREFER_SRC_TMP = 0x1
+ sysIPV6_PREFER_SRC_PUBLIC = 0x2
+ sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x100
+ sysIPV6_PREFER_SRC_COA = 0x4
+ sysIPV6_PREFER_SRC_HOME = 0x400
+ sysIPV6_PREFER_SRC_CGA = 0x8
+ sysIPV6_PREFER_SRC_NONCGA = 0x800
+
+ sysIPV6_MINHOPCOUNT = 0x49
+
+ sysIPV6_ORIGDSTADDR = 0x4a
+ sysIPV6_RECVORIGDSTADDR = 0x4a
+ sysIPV6_TRANSPARENT = 0x4b
+ sysIPV6_UNICAST_IF = 0x4c
+
+ sysICMPV6_FILTER = 0x1
+
+ sysICMPV6_FILTER_BLOCK = 0x1
+ sysICMPV6_FILTER_PASS = 0x2
+ sysICMPV6_FILTER_BLOCKOTHERS = 0x3
+ sysICMPV6_FILTER_PASSONLY = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+ sizeofIPv6FlowlabelReq = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPv6Filter = 0x20
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6FlowlabelReq struct {
+ Dst [16]byte /* in6_addr */
+ Label uint32
+ Action uint8
+ Share uint8
+ Flags uint16
+ Expires uint16
+ Linger uint16
+ X__flr_pad uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Data [8]uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_linux_s390x.go b/vendor/golang.org/x/net/ipv6/zsys_linux_s390x.go
new file mode 100644
index 0000000..9566d76
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_linux_s390x.go
@@ -0,0 +1,172 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+package ipv6
+
+const (
+ sysIPV6_ADDRFORM = 0x1
+ sysIPV6_2292PKTINFO = 0x2
+ sysIPV6_2292HOPOPTS = 0x3
+ sysIPV6_2292DSTOPTS = 0x4
+ sysIPV6_2292RTHDR = 0x5
+ sysIPV6_2292PKTOPTIONS = 0x6
+ sysIPV6_CHECKSUM = 0x7
+ sysIPV6_2292HOPLIMIT = 0x8
+ sysIPV6_NEXTHOP = 0x9
+ sysIPV6_FLOWINFO = 0xb
+
+ sysIPV6_UNICAST_HOPS = 0x10
+ sysIPV6_MULTICAST_IF = 0x11
+ sysIPV6_MULTICAST_HOPS = 0x12
+ sysIPV6_MULTICAST_LOOP = 0x13
+ sysIPV6_ADD_MEMBERSHIP = 0x14
+ sysIPV6_DROP_MEMBERSHIP = 0x15
+ sysMCAST_JOIN_GROUP = 0x2a
+ sysMCAST_LEAVE_GROUP = 0x2d
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2e
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2f
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_MSFILTER = 0x30
+ sysIPV6_ROUTER_ALERT = 0x16
+ sysIPV6_MTU_DISCOVER = 0x17
+ sysIPV6_MTU = 0x18
+ sysIPV6_RECVERR = 0x19
+ sysIPV6_V6ONLY = 0x1a
+ sysIPV6_JOIN_ANYCAST = 0x1b
+ sysIPV6_LEAVE_ANYCAST = 0x1c
+
+ sysIPV6_FLOWLABEL_MGR = 0x20
+ sysIPV6_FLOWINFO_SEND = 0x21
+
+ sysIPV6_IPSEC_POLICY = 0x22
+ sysIPV6_XFRM_POLICY = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x31
+ sysIPV6_PKTINFO = 0x32
+ sysIPV6_RECVHOPLIMIT = 0x33
+ sysIPV6_HOPLIMIT = 0x34
+ sysIPV6_RECVHOPOPTS = 0x35
+ sysIPV6_HOPOPTS = 0x36
+ sysIPV6_RTHDRDSTOPTS = 0x37
+ sysIPV6_RECVRTHDR = 0x38
+ sysIPV6_RTHDR = 0x39
+ sysIPV6_RECVDSTOPTS = 0x3a
+ sysIPV6_DSTOPTS = 0x3b
+ sysIPV6_RECVPATHMTU = 0x3c
+ sysIPV6_PATHMTU = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_RECVTCLASS = 0x42
+ sysIPV6_TCLASS = 0x43
+
+ sysIPV6_ADDR_PREFERENCES = 0x48
+
+ sysIPV6_PREFER_SRC_TMP = 0x1
+ sysIPV6_PREFER_SRC_PUBLIC = 0x2
+ sysIPV6_PREFER_SRC_PUBTMP_DEFAULT = 0x100
+ sysIPV6_PREFER_SRC_COA = 0x4
+ sysIPV6_PREFER_SRC_HOME = 0x400
+ sysIPV6_PREFER_SRC_CGA = 0x8
+ sysIPV6_PREFER_SRC_NONCGA = 0x800
+
+ sysIPV6_MINHOPCOUNT = 0x49
+
+ sysIPV6_ORIGDSTADDR = 0x4a
+ sysIPV6_RECVORIGDSTADDR = 0x4a
+ sysIPV6_TRANSPARENT = 0x4b
+ sysIPV6_UNICAST_IF = 0x4c
+
+ sysICMPV6_FILTER = 0x1
+
+ sysICMPV6_FILTER_BLOCK = 0x1
+ sysICMPV6_FILTER_PASS = 0x2
+ sysICMPV6_FILTER_BLOCKOTHERS = 0x3
+ sysICMPV6_FILTER_PASSONLY = 0x4
+
+ sysSOL_SOCKET = 0x1
+ sysSO_ATTACH_FILTER = 0x1a
+
+ sizeofKernelSockaddrStorage = 0x80
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+ sizeofIPv6FlowlabelReq = 0x20
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x88
+ sizeofGroupSourceReq = 0x108
+
+ sizeofICMPv6Filter = 0x20
+
+ sizeofSockFprog = 0x10
+)
+
+type kernelSockaddrStorage struct {
+ Family uint16
+ X__data [126]int8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6FlowlabelReq struct {
+ Dst [16]byte /* in6_addr */
+ Label uint32
+ Action uint8
+ Share uint8
+ Flags uint16
+ Expires uint16
+ Linger uint16
+ X__flr_pad uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Ifindex int32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [4]byte
+ Group kernelSockaddrStorage
+ Source kernelSockaddrStorage
+}
+
+type icmpv6Filter struct {
+ Data [8]uint32
+}
+
+type sockFProg struct {
+ Len uint16
+ Pad_cgo_0 [6]byte
+ Filter *sockFilter
+}
+
+type sockFilter struct {
+ Code uint16
+ Jt uint8
+ Jf uint8
+ K uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_netbsd.go b/vendor/golang.org/x/net/ipv6/zsys_netbsd.go
new file mode 100644
index 0000000..e39571e
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_netbsd.go
@@ -0,0 +1,84 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_netbsd.go
+
+package ipv6
+
+const (
+ sysIPV6_UNICAST_HOPS = 0x4
+ sysIPV6_MULTICAST_IF = 0x9
+ sysIPV6_MULTICAST_HOPS = 0xa
+ sysIPV6_MULTICAST_LOOP = 0xb
+ sysIPV6_JOIN_GROUP = 0xc
+ sysIPV6_LEAVE_GROUP = 0xd
+ sysIPV6_PORTRANGE = 0xe
+ sysICMP6_FILTER = 0x12
+
+ sysIPV6_CHECKSUM = 0x1a
+ sysIPV6_V6ONLY = 0x1b
+
+ sysIPV6_IPSEC_POLICY = 0x1c
+
+ sysIPV6_RTHDRDSTOPTS = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x24
+ sysIPV6_RECVHOPLIMIT = 0x25
+ sysIPV6_RECVRTHDR = 0x26
+ sysIPV6_RECVHOPOPTS = 0x27
+ sysIPV6_RECVDSTOPTS = 0x28
+
+ sysIPV6_USE_MIN_MTU = 0x2a
+ sysIPV6_RECVPATHMTU = 0x2b
+ sysIPV6_PATHMTU = 0x2c
+
+ sysIPV6_PKTINFO = 0x2e
+ sysIPV6_HOPLIMIT = 0x2f
+ sysIPV6_NEXTHOP = 0x30
+ sysIPV6_HOPOPTS = 0x31
+ sysIPV6_DSTOPTS = 0x32
+ sysIPV6_RTHDR = 0x33
+
+ sysIPV6_RECVTCLASS = 0x39
+
+ sysIPV6_TCLASS = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+
+ sysIPV6_PORTRANGE_DEFAULT = 0x0
+ sysIPV6_PORTRANGE_HIGH = 0x1
+ sysIPV6_PORTRANGE_LOW = 0x2
+
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+
+ sizeofIPv6Mreq = 0x14
+
+ sizeofICMPv6Filter = 0x20
+)
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex uint32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Interface uint32
+}
+
+type icmpv6Filter struct {
+ Filt [8]uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_openbsd.go b/vendor/golang.org/x/net/ipv6/zsys_openbsd.go
new file mode 100644
index 0000000..cc1899a
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_openbsd.go
@@ -0,0 +1,93 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_openbsd.go
+
+package ipv6
+
+const (
+ sysIPV6_UNICAST_HOPS = 0x4
+ sysIPV6_MULTICAST_IF = 0x9
+ sysIPV6_MULTICAST_HOPS = 0xa
+ sysIPV6_MULTICAST_LOOP = 0xb
+ sysIPV6_JOIN_GROUP = 0xc
+ sysIPV6_LEAVE_GROUP = 0xd
+ sysIPV6_PORTRANGE = 0xe
+ sysICMP6_FILTER = 0x12
+
+ sysIPV6_CHECKSUM = 0x1a
+ sysIPV6_V6ONLY = 0x1b
+
+ sysIPV6_RTHDRDSTOPTS = 0x23
+
+ sysIPV6_RECVPKTINFO = 0x24
+ sysIPV6_RECVHOPLIMIT = 0x25
+ sysIPV6_RECVRTHDR = 0x26
+ sysIPV6_RECVHOPOPTS = 0x27
+ sysIPV6_RECVDSTOPTS = 0x28
+
+ sysIPV6_USE_MIN_MTU = 0x2a
+ sysIPV6_RECVPATHMTU = 0x2b
+
+ sysIPV6_PATHMTU = 0x2c
+
+ sysIPV6_PKTINFO = 0x2e
+ sysIPV6_HOPLIMIT = 0x2f
+ sysIPV6_NEXTHOP = 0x30
+ sysIPV6_HOPOPTS = 0x31
+ sysIPV6_DSTOPTS = 0x32
+ sysIPV6_RTHDR = 0x33
+
+ sysIPV6_AUTH_LEVEL = 0x35
+ sysIPV6_ESP_TRANS_LEVEL = 0x36
+ sysIPV6_ESP_NETWORK_LEVEL = 0x37
+ sysIPSEC6_OUTSA = 0x38
+ sysIPV6_RECVTCLASS = 0x39
+
+ sysIPV6_AUTOFLOWLABEL = 0x3b
+ sysIPV6_IPCOMP_LEVEL = 0x3c
+
+ sysIPV6_TCLASS = 0x3d
+ sysIPV6_DONTFRAG = 0x3e
+ sysIPV6_PIPEX = 0x3f
+
+ sysIPV6_RTABLE = 0x1021
+
+ sysIPV6_PORTRANGE_DEFAULT = 0x0
+ sysIPV6_PORTRANGE_HIGH = 0x1
+ sysIPV6_PORTRANGE_LOW = 0x2
+
+ sizeofSockaddrInet6 = 0x1c
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x20
+
+ sizeofIPv6Mreq = 0x14
+
+ sizeofICMPv6Filter = 0x20
+)
+
+type sockaddrInet6 struct {
+ Len uint8
+ Family uint8
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex uint32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Interface uint32
+}
+
+type icmpv6Filter struct {
+ Filt [8]uint32
+}
diff --git a/vendor/golang.org/x/net/ipv6/zsys_solaris.go b/vendor/golang.org/x/net/ipv6/zsys_solaris.go
new file mode 100644
index 0000000..690eef9
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv6/zsys_solaris.go
@@ -0,0 +1,131 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_solaris.go
+
+package ipv6
+
+const (
+ sysIPV6_UNICAST_HOPS = 0x5
+ sysIPV6_MULTICAST_IF = 0x6
+ sysIPV6_MULTICAST_HOPS = 0x7
+ sysIPV6_MULTICAST_LOOP = 0x8
+ sysIPV6_JOIN_GROUP = 0x9
+ sysIPV6_LEAVE_GROUP = 0xa
+
+ sysIPV6_PKTINFO = 0xb
+
+ sysIPV6_HOPLIMIT = 0xc
+ sysIPV6_NEXTHOP = 0xd
+ sysIPV6_HOPOPTS = 0xe
+ sysIPV6_DSTOPTS = 0xf
+
+ sysIPV6_RTHDR = 0x10
+ sysIPV6_RTHDRDSTOPTS = 0x11
+
+ sysIPV6_RECVPKTINFO = 0x12
+ sysIPV6_RECVHOPLIMIT = 0x13
+ sysIPV6_RECVHOPOPTS = 0x14
+
+ sysIPV6_RECVRTHDR = 0x16
+
+ sysIPV6_RECVRTHDRDSTOPTS = 0x17
+
+ sysIPV6_CHECKSUM = 0x18
+ sysIPV6_RECVTCLASS = 0x19
+ sysIPV6_USE_MIN_MTU = 0x20
+ sysIPV6_DONTFRAG = 0x21
+ sysIPV6_SEC_OPT = 0x22
+ sysIPV6_SRC_PREFERENCES = 0x23
+ sysIPV6_RECVPATHMTU = 0x24
+ sysIPV6_PATHMTU = 0x25
+ sysIPV6_TCLASS = 0x26
+ sysIPV6_V6ONLY = 0x27
+
+ sysIPV6_RECVDSTOPTS = 0x28
+
+ sysMCAST_JOIN_GROUP = 0x29
+ sysMCAST_LEAVE_GROUP = 0x2a
+ sysMCAST_BLOCK_SOURCE = 0x2b
+ sysMCAST_UNBLOCK_SOURCE = 0x2c
+ sysMCAST_JOIN_SOURCE_GROUP = 0x2d
+ sysMCAST_LEAVE_SOURCE_GROUP = 0x2e
+
+ sysIPV6_PREFER_SRC_HOME = 0x1
+ sysIPV6_PREFER_SRC_COA = 0x2
+ sysIPV6_PREFER_SRC_PUBLIC = 0x4
+ sysIPV6_PREFER_SRC_TMP = 0x8
+ sysIPV6_PREFER_SRC_NONCGA = 0x10
+ sysIPV6_PREFER_SRC_CGA = 0x20
+
+ sysIPV6_PREFER_SRC_MIPMASK = 0x3
+ sysIPV6_PREFER_SRC_MIPDEFAULT = 0x1
+ sysIPV6_PREFER_SRC_TMPMASK = 0xc
+ sysIPV6_PREFER_SRC_TMPDEFAULT = 0x4
+ sysIPV6_PREFER_SRC_CGAMASK = 0x30
+ sysIPV6_PREFER_SRC_CGADEFAULT = 0x10
+
+ sysIPV6_PREFER_SRC_MASK = 0x3f
+
+ sysIPV6_PREFER_SRC_DEFAULT = 0x15
+
+ sysIPV6_BOUND_IF = 0x41
+ sysIPV6_UNSPEC_SRC = 0x42
+
+ sysICMP6_FILTER = 0x1
+
+ sizeofSockaddrStorage = 0x100
+ sizeofSockaddrInet6 = 0x20
+ sizeofInet6Pktinfo = 0x14
+ sizeofIPv6Mtuinfo = 0x24
+
+ sizeofIPv6Mreq = 0x14
+ sizeofGroupReq = 0x104
+ sizeofGroupSourceReq = 0x204
+
+ sizeofICMPv6Filter = 0x20
+)
+
+type sockaddrStorage struct {
+ Family uint16
+ X_ss_pad1 [6]int8
+ X_ss_align float64
+ X_ss_pad2 [240]int8
+}
+
+type sockaddrInet6 struct {
+ Family uint16
+ Port uint16
+ Flowinfo uint32
+ Addr [16]byte /* in6_addr */
+ Scope_id uint32
+ X__sin6_src_id uint32
+}
+
+type inet6Pktinfo struct {
+ Addr [16]byte /* in6_addr */
+ Ifindex uint32
+}
+
+type ipv6Mtuinfo struct {
+ Addr sockaddrInet6
+ Mtu uint32
+}
+
+type ipv6Mreq struct {
+ Multiaddr [16]byte /* in6_addr */
+ Interface uint32
+}
+
+type groupReq struct {
+ Interface uint32
+ Pad_cgo_0 [256]byte
+}
+
+type groupSourceReq struct {
+ Interface uint32
+ Pad_cgo_0 [256]byte
+ Pad_cgo_1 [256]byte
+}
+
+type icmpv6Filter struct {
+ X__icmp6_filt [8]uint32
+}
diff --git a/vendor/golang.org/x/sys/AUTHORS b/vendor/golang.org/x/sys/AUTHORS
new file mode 100644
index 0000000..15167cd
--- /dev/null
+++ b/vendor/golang.org/x/sys/AUTHORS
@@ -0,0 +1,3 @@
+# This source code refers to The Go Authors for copyright purposes.
+# The master list of authors is in the main Go distribution,
+# visible at http://tip.golang.org/AUTHORS.
diff --git a/vendor/golang.org/x/sys/CONTRIBUTORS b/vendor/golang.org/x/sys/CONTRIBUTORS
new file mode 100644
index 0000000..1c4577e
--- /dev/null
+++ b/vendor/golang.org/x/sys/CONTRIBUTORS
@@ -0,0 +1,3 @@
+# This source code was written by the Go contributors.
+# The master list of contributors is in the main Go distribution,
+# visible at http://tip.golang.org/CONTRIBUTORS.
diff --git a/vendor/golang.org/x/sys/LICENSE b/vendor/golang.org/x/sys/LICENSE
new file mode 100644
index 0000000..6a66aea
--- /dev/null
+++ b/vendor/golang.org/x/sys/LICENSE
@@ -0,0 +1,27 @@
+Copyright (c) 2009 The Go Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+ * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+ * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/golang.org/x/sys/PATENTS b/vendor/golang.org/x/sys/PATENTS
new file mode 100644
index 0000000..7330990
--- /dev/null
+++ b/vendor/golang.org/x/sys/PATENTS
@@ -0,0 +1,22 @@
+Additional IP Rights Grant (Patents)
+
+"This implementation" means the copyrightable works distributed by
+Google as part of the Go project.
+
+Google hereby grants to You a perpetual, worldwide, non-exclusive,
+no-charge, royalty-free, irrevocable (except as stated in this section)
+patent license to make, have made, use, offer to sell, sell, import,
+transfer and otherwise run, modify and propagate the contents of this
+implementation of Go, where such license applies only to those patent
+claims, both currently owned or controlled by Google and acquired in
+the future, licensable by Google that are necessarily infringed by this
+implementation of Go. This grant does not include claims that would be
+infringed only as a consequence of further modification of this
+implementation. If you or your agent or exclusive licensee institute or
+order or agree to the institution of patent litigation against any
+entity (including a cross-claim or counterclaim in a lawsuit) alleging
+that this implementation of Go or any code incorporated within this
+implementation of Go constitutes direct or contributory patent
+infringement, or inducement of patent infringement, then any patent
+rights granted to you under this License for this implementation of Go
+shall terminate as of the date such litigation is filed.
diff --git a/vendor/golang.org/x/sys/unix/.gitignore b/vendor/golang.org/x/sys/unix/.gitignore
new file mode 100644
index 0000000..e3e0fc6
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/.gitignore
@@ -0,0 +1,2 @@
+_obj/
+unix.test
diff --git a/vendor/golang.org/x/sys/unix/README.md b/vendor/golang.org/x/sys/unix/README.md
new file mode 100644
index 0000000..eb2f78a
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/README.md
@@ -0,0 +1,173 @@
+# Building `sys/unix`
+
+The sys/unix package provides access to the raw system call interface of the
+underlying operating system. See: https://godoc.org/golang.org/x/sys/unix
+
+Porting Go to a new architecture/OS combination or adding syscalls, types, or
+constants to an existing architecture/OS pair requires some manual effort;
+however, there are tools that automate much of the process.
+
+## Build Systems
+
+There are currently two ways we generate the necessary files. We are currently
+migrating the build system to use containers so the builds are reproducible.
+This is being done on an OS-by-OS basis. Please update this documentation as
+components of the build system change.
+
+### Old Build System (currently for `GOOS != "linux"`)
+
+The old build system generates the Go files based on the C header files
+present on your system. This means that files
+for a given GOOS/GOARCH pair must be generated on a system with that OS and
+architecture. This also means that the generated code can differ from system
+to system, based on differences in the header files.
+
+To avoid this, if you are using the old build system, only generate the Go
+files on an installation with unmodified header files. It is also important to
+keep track of which version of the OS the files were generated from (ex.
+Darwin 14 vs Darwin 15). This makes it easier to track the progress of changes
+and have each OS upgrade correspond to a single change.
+
+To build the files for your current OS and architecture, make sure GOOS and
+GOARCH are set correctly and run `mkall.sh`. This will generate the files for
+your specific system. Running `mkall.sh -n` shows the commands that will be run.
+
+Requirements: bash, go
+
+### New Build System (currently for `GOOS == "linux"`)
+
+The new build system uses a Docker container to generate the go files directly
+from source checkouts of the kernel and various system libraries. This means
+that on any platform that supports Docker, all the files using the new build
+system can be generated at once, and generated files will not change based on
+what the person running the scripts has installed on their computer.
+
+The OS specific files for the new build system are located in the `${GOOS}`
+directory, and the build is coordinated by the `${GOOS}/mkall.go` program. When
+the kernel or system library updates, modify the Dockerfile at
+`${GOOS}/Dockerfile` to checkout the new release of the source.
+
+To build all the files under the new build system, you must be on an amd64/Linux
+system and have your GOOS and GOARCH set accordingly. Running `mkall.sh` will
+then generate all of the files for all of the GOOS/GOARCH pairs in the new build
+system. Running `mkall.sh -n` shows the commands that will be run.
+
+Requirements: bash, go, docker
+
+## Component files
+
+This section describes the various files used in the code generation process.
+It also contains instructions on how to modify these files to add a new
+architecture/OS or to add additional syscalls, types, or constants. Note that
+if you are using the new build system, the scripts/programs cannot be called normally.
+They must be called from within the docker container.
+
+### asm files
+
+The hand-written assembly file at `asm_${GOOS}_${GOARCH}.s` implements system
+call dispatch. There are three entry points:
+```
+ func Syscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr)
+ func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2, err uintptr)
+ func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2, err uintptr)
+```
+The first and second are the standard ones; they differ only in how many
+arguments can be passed to the kernel. The third is for low-level use by the
+ForkExec wrapper. Unlike the first two, it does not call into the scheduler to
+let it know that a system call is running.
+
+When porting Go to an new architecture/OS, this file must be implemented for
+each GOOS/GOARCH pair.
+
+### mksysnum
+
+Mksysnum is a Go program located at `${GOOS}/mksysnum.go` (or `mksysnum_${GOOS}.go`
+for the old system). This program takes in a list of header files containing the
+syscall number declarations and parses them to produce the corresponding list of
+Go numeric constants. See `zsysnum_${GOOS}_${GOARCH}.go` for the generated
+constants.
+
+Adding new syscall numbers is mostly done by running the build on a sufficiently
+new installation of the target OS (or updating the source checkouts for the
+new build system). However, depending on the OS, you make need to update the
+parsing in mksysnum.
+
+### mksyscall.go
+
+The `syscall.go`, `syscall_${GOOS}.go`, `syscall_${GOOS}_${GOARCH}.go` are
+hand-written Go files which implement system calls (for unix, the specific OS,
+or the specific OS/Architecture pair respectively) that need special handling
+and list `//sys` comments giving prototypes for ones that can be generated.
+
+The mksyscall.go program takes the `//sys` and `//sysnb` comments and converts
+them into syscalls. This requires the name of the prototype in the comment to
+match a syscall number in the `zsysnum_${GOOS}_${GOARCH}.go` file. The function
+prototype can be exported (capitalized) or not.
+
+Adding a new syscall often just requires adding a new `//sys` function prototype
+with the desired arguments and a capitalized name so it is exported. However, if
+you want the interface to the syscall to be different, often one will make an
+unexported `//sys` prototype, an then write a custom wrapper in
+`syscall_${GOOS}.go`.
+
+### types files
+
+For each OS, there is a hand-written Go file at `${GOOS}/types.go` (or
+`types_${GOOS}.go` on the old system). This file includes standard C headers and
+creates Go type aliases to the corresponding C types. The file is then fed
+through godef to get the Go compatible definitions. Finally, the generated code
+is fed though mkpost.go to format the code correctly and remove any hidden or
+private identifiers. This cleaned-up code is written to
+`ztypes_${GOOS}_${GOARCH}.go`.
+
+The hardest part about preparing this file is figuring out which headers to
+include and which symbols need to be `#define`d to get the actual data
+structures that pass through to the kernel system calls. Some C libraries
+preset alternate versions for binary compatibility and translate them on the
+way in and out of system calls, but there is almost always a `#define` that can
+get the real ones.
+See `types_darwin.go` and `linux/types.go` for examples.
+
+To add a new type, add in the necessary include statement at the top of the
+file (if it is not already there) and add in a type alias line. Note that if
+your type is significantly different on different architectures, you may need
+some `#if/#elif` macros in your include statements.
+
+### mkerrors.sh
+
+This script is used to generate the system's various constants. This doesn't
+just include the error numbers and error strings, but also the signal numbers
+an a wide variety of miscellaneous constants. The constants come from the list
+of include files in the `includes_${uname}` variable. A regex then picks out
+the desired `#define` statements, and generates the corresponding Go constants.
+The error numbers and strings are generated from `#include `, and the
+signal numbers and strings are generated from `#include `. All of
+these constants are written to `zerrors_${GOOS}_${GOARCH}.go` via a C program,
+`_errors.c`, which prints out all the constants.
+
+To add a constant, add the header that includes it to the appropriate variable.
+Then, edit the regex (if necessary) to match the desired constant. Avoid making
+the regex too broad to avoid matching unintended constants.
+
+
+## Generated files
+
+### `zerror_${GOOS}_${GOARCH}.go`
+
+A file containing all of the system's generated error numbers, error strings,
+signal numbers, and constants. Generated by `mkerrors.sh` (see above).
+
+### `zsyscall_${GOOS}_${GOARCH}.go`
+
+A file containing all the generated syscalls for a specific GOOS and GOARCH.
+Generated by `mksyscall.go` (see above).
+
+### `zsysnum_${GOOS}_${GOARCH}.go`
+
+A list of numeric constants for all the syscall number of the specific GOOS
+and GOARCH. Generated by mksysnum (see above).
+
+### `ztypes_${GOOS}_${GOARCH}.go`
+
+A file containing Go types for passing into (or returning from) syscalls.
+Generated by godefs and the types file (see above).
diff --git a/vendor/golang.org/x/sys/unix/affinity_linux.go b/vendor/golang.org/x/sys/unix/affinity_linux.go
new file mode 100644
index 0000000..6e5c81a
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/affinity_linux.go
@@ -0,0 +1,86 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// CPU affinity functions
+
+package unix
+
+import (
+ "math/bits"
+ "unsafe"
+)
+
+const cpuSetSize = _CPU_SETSIZE / _NCPUBITS
+
+// CPUSet represents a CPU affinity mask.
+type CPUSet [cpuSetSize]cpuMask
+
+func schedAffinity(trap uintptr, pid int, set *CPUSet) error {
+ _, _, e := RawSyscall(trap, uintptr(pid), uintptr(unsafe.Sizeof(*set)), uintptr(unsafe.Pointer(set)))
+ if e != 0 {
+ return errnoErr(e)
+ }
+ return nil
+}
+
+// SchedGetaffinity gets the CPU affinity mask of the thread specified by pid.
+// If pid is 0 the calling thread is used.
+func SchedGetaffinity(pid int, set *CPUSet) error {
+ return schedAffinity(SYS_SCHED_GETAFFINITY, pid, set)
+}
+
+// SchedSetaffinity sets the CPU affinity mask of the thread specified by pid.
+// If pid is 0 the calling thread is used.
+func SchedSetaffinity(pid int, set *CPUSet) error {
+ return schedAffinity(SYS_SCHED_SETAFFINITY, pid, set)
+}
+
+// Zero clears the set s, so that it contains no CPUs.
+func (s *CPUSet) Zero() {
+ for i := range s {
+ s[i] = 0
+ }
+}
+
+func cpuBitsIndex(cpu int) int {
+ return cpu / _NCPUBITS
+}
+
+func cpuBitsMask(cpu int) cpuMask {
+ return cpuMask(1 << (uint(cpu) % _NCPUBITS))
+}
+
+// Set adds cpu to the set s.
+func (s *CPUSet) Set(cpu int) {
+ i := cpuBitsIndex(cpu)
+ if i < len(s) {
+ s[i] |= cpuBitsMask(cpu)
+ }
+}
+
+// Clear removes cpu from the set s.
+func (s *CPUSet) Clear(cpu int) {
+ i := cpuBitsIndex(cpu)
+ if i < len(s) {
+ s[i] &^= cpuBitsMask(cpu)
+ }
+}
+
+// IsSet reports whether cpu is in the set s.
+func (s *CPUSet) IsSet(cpu int) bool {
+ i := cpuBitsIndex(cpu)
+ if i < len(s) {
+ return s[i]&cpuBitsMask(cpu) != 0
+ }
+ return false
+}
+
+// Count returns the number of CPUs in the set s.
+func (s *CPUSet) Count() int {
+ c := 0
+ for _, b := range s {
+ c += bits.OnesCount64(uint64(b))
+ }
+ return c
+}
diff --git a/vendor/golang.org/x/sys/unix/aliases.go b/vendor/golang.org/x/sys/unix/aliases.go
new file mode 100644
index 0000000..951fce4
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/aliases.go
@@ -0,0 +1,14 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+// +build go1.9
+
+package unix
+
+import "syscall"
+
+type Signal = syscall.Signal
+type Errno = syscall.Errno
+type SysProcAttr = syscall.SysProcAttr
diff --git a/vendor/golang.org/x/sys/unix/asm_aix_ppc64.s b/vendor/golang.org/x/sys/unix/asm_aix_ppc64.s
new file mode 100644
index 0000000..06f84b8
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_aix_ppc64.s
@@ -0,0 +1,17 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System calls for ppc64, AIX are implemented in runtime/syscall_aix.go
+//
+
+TEXT ·syscall6(SB),NOSPLIT,$0-88
+ JMP syscall·syscall6(SB)
+
+TEXT ·rawSyscall6(SB),NOSPLIT,$0-88
+ JMP syscall·rawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_darwin_386.s b/vendor/golang.org/x/sys/unix/asm_darwin_386.s
new file mode 100644
index 0000000..8a72783
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_darwin_386.s
@@ -0,0 +1,29 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System call support for 386, Darwin
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-28
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-40
+ JMP syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-52
+ JMP syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-28
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
+ JMP syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_darwin_amd64.s b/vendor/golang.org/x/sys/unix/asm_darwin_amd64.s
new file mode 100644
index 0000000..6321421
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_darwin_amd64.s
@@ -0,0 +1,29 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System call support for AMD64, Darwin
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-56
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+ JMP syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-104
+ JMP syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
+ JMP syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_darwin_arm.s b/vendor/golang.org/x/sys/unix/asm_darwin_arm.s
new file mode 100644
index 0000000..333242d
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_darwin_arm.s
@@ -0,0 +1,30 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+// +build arm,darwin
+
+#include "textflag.h"
+
+//
+// System call support for ARM, Darwin
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-28
+ B syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-40
+ B syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-52
+ B syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-28
+ B syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
+ B syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_darwin_arm64.s b/vendor/golang.org/x/sys/unix/asm_darwin_arm64.s
new file mode 100644
index 0000000..97e0174
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_darwin_arm64.s
@@ -0,0 +1,30 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+// +build arm64,darwin
+
+#include "textflag.h"
+
+//
+// System call support for AMD64, Darwin
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-56
+ B syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+ B syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-104
+ B syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+ B syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
+ B syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_dragonfly_amd64.s b/vendor/golang.org/x/sys/unix/asm_dragonfly_amd64.s
new file mode 100644
index 0000000..603dd57
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_dragonfly_amd64.s
@@ -0,0 +1,29 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System call support for AMD64, DragonFly
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-56
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+ JMP syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-104
+ JMP syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
+ JMP syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_freebsd_386.s b/vendor/golang.org/x/sys/unix/asm_freebsd_386.s
new file mode 100644
index 0000000..c9a0a26
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_freebsd_386.s
@@ -0,0 +1,29 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System call support for 386, FreeBSD
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-28
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-40
+ JMP syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-52
+ JMP syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-28
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
+ JMP syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_freebsd_amd64.s b/vendor/golang.org/x/sys/unix/asm_freebsd_amd64.s
new file mode 100644
index 0000000..3517247
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_freebsd_amd64.s
@@ -0,0 +1,29 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System call support for AMD64, FreeBSD
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-56
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+ JMP syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-104
+ JMP syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
+ JMP syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_freebsd_arm.s b/vendor/golang.org/x/sys/unix/asm_freebsd_arm.s
new file mode 100644
index 0000000..9227c87
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_freebsd_arm.s
@@ -0,0 +1,29 @@
+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System call support for ARM, FreeBSD
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-28
+ B syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-40
+ B syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-52
+ B syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-28
+ B syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
+ B syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_freebsd_arm64.s b/vendor/golang.org/x/sys/unix/asm_freebsd_arm64.s
new file mode 100644
index 0000000..d9318cb
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_freebsd_arm64.s
@@ -0,0 +1,29 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System call support for ARM64, FreeBSD
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-56
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+ JMP syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-104
+ JMP syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
+ JMP syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_linux_386.s b/vendor/golang.org/x/sys/unix/asm_linux_386.s
new file mode 100644
index 0000000..448bebb
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_linux_386.s
@@ -0,0 +1,65 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System calls for 386, Linux
+//
+
+// See ../runtime/sys_linux_386.s for the reason why we always use int 0x80
+// instead of the glibc-specific "CALL 0x10(GS)".
+#define INVOKE_SYSCALL INT $0x80
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-28
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-40
+ JMP syscall·Syscall6(SB)
+
+TEXT ·SyscallNoError(SB),NOSPLIT,$0-24
+ CALL runtime·entersyscall(SB)
+ MOVL trap+0(FP), AX // syscall entry
+ MOVL a1+4(FP), BX
+ MOVL a2+8(FP), CX
+ MOVL a3+12(FP), DX
+ MOVL $0, SI
+ MOVL $0, DI
+ INVOKE_SYSCALL
+ MOVL AX, r1+16(FP)
+ MOVL DX, r2+20(FP)
+ CALL runtime·exitsyscall(SB)
+ RET
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-28
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
+ JMP syscall·RawSyscall6(SB)
+
+TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-24
+ MOVL trap+0(FP), AX // syscall entry
+ MOVL a1+4(FP), BX
+ MOVL a2+8(FP), CX
+ MOVL a3+12(FP), DX
+ MOVL $0, SI
+ MOVL $0, DI
+ INVOKE_SYSCALL
+ MOVL AX, r1+16(FP)
+ MOVL DX, r2+20(FP)
+ RET
+
+TEXT ·socketcall(SB),NOSPLIT,$0-36
+ JMP syscall·socketcall(SB)
+
+TEXT ·rawsocketcall(SB),NOSPLIT,$0-36
+ JMP syscall·rawsocketcall(SB)
+
+TEXT ·seek(SB),NOSPLIT,$0-28
+ JMP syscall·seek(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_linux_amd64.s b/vendor/golang.org/x/sys/unix/asm_linux_amd64.s
new file mode 100644
index 0000000..c6468a9
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_linux_amd64.s
@@ -0,0 +1,57 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System calls for AMD64, Linux
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-56
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+ JMP syscall·Syscall6(SB)
+
+TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
+ CALL runtime·entersyscall(SB)
+ MOVQ a1+8(FP), DI
+ MOVQ a2+16(FP), SI
+ MOVQ a3+24(FP), DX
+ MOVQ $0, R10
+ MOVQ $0, R8
+ MOVQ $0, R9
+ MOVQ trap+0(FP), AX // syscall entry
+ SYSCALL
+ MOVQ AX, r1+32(FP)
+ MOVQ DX, r2+40(FP)
+ CALL runtime·exitsyscall(SB)
+ RET
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
+ JMP syscall·RawSyscall6(SB)
+
+TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
+ MOVQ a1+8(FP), DI
+ MOVQ a2+16(FP), SI
+ MOVQ a3+24(FP), DX
+ MOVQ $0, R10
+ MOVQ $0, R8
+ MOVQ $0, R9
+ MOVQ trap+0(FP), AX // syscall entry
+ SYSCALL
+ MOVQ AX, r1+32(FP)
+ MOVQ DX, r2+40(FP)
+ RET
+
+TEXT ·gettimeofday(SB),NOSPLIT,$0-16
+ JMP syscall·gettimeofday(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_linux_arm.s b/vendor/golang.org/x/sys/unix/asm_linux_arm.s
new file mode 100644
index 0000000..cf0f357
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_linux_arm.s
@@ -0,0 +1,56 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System calls for arm, Linux
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-28
+ B syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-40
+ B syscall·Syscall6(SB)
+
+TEXT ·SyscallNoError(SB),NOSPLIT,$0-24
+ BL runtime·entersyscall(SB)
+ MOVW trap+0(FP), R7
+ MOVW a1+4(FP), R0
+ MOVW a2+8(FP), R1
+ MOVW a3+12(FP), R2
+ MOVW $0, R3
+ MOVW $0, R4
+ MOVW $0, R5
+ SWI $0
+ MOVW R0, r1+16(FP)
+ MOVW $0, R0
+ MOVW R0, r2+20(FP)
+ BL runtime·exitsyscall(SB)
+ RET
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-28
+ B syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
+ B syscall·RawSyscall6(SB)
+
+TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-24
+ MOVW trap+0(FP), R7 // syscall entry
+ MOVW a1+4(FP), R0
+ MOVW a2+8(FP), R1
+ MOVW a3+12(FP), R2
+ SWI $0
+ MOVW R0, r1+16(FP)
+ MOVW $0, R0
+ MOVW R0, r2+20(FP)
+ RET
+
+TEXT ·seek(SB),NOSPLIT,$0-28
+ B syscall·seek(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_linux_arm64.s b/vendor/golang.org/x/sys/unix/asm_linux_arm64.s
new file mode 100644
index 0000000..afe6fdf
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_linux_arm64.s
@@ -0,0 +1,52 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux
+// +build arm64
+// +build !gccgo
+
+#include "textflag.h"
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-56
+ B syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+ B syscall·Syscall6(SB)
+
+TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
+ BL runtime·entersyscall(SB)
+ MOVD a1+8(FP), R0
+ MOVD a2+16(FP), R1
+ MOVD a3+24(FP), R2
+ MOVD $0, R3
+ MOVD $0, R4
+ MOVD $0, R5
+ MOVD trap+0(FP), R8 // syscall entry
+ SVC
+ MOVD R0, r1+32(FP) // r1
+ MOVD R1, r2+40(FP) // r2
+ BL runtime·exitsyscall(SB)
+ RET
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+ B syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
+ B syscall·RawSyscall6(SB)
+
+TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
+ MOVD a1+8(FP), R0
+ MOVD a2+16(FP), R1
+ MOVD a3+24(FP), R2
+ MOVD $0, R3
+ MOVD $0, R4
+ MOVD $0, R5
+ MOVD trap+0(FP), R8 // syscall entry
+ SVC
+ MOVD R0, r1+32(FP)
+ MOVD R1, r2+40(FP)
+ RET
diff --git a/vendor/golang.org/x/sys/unix/asm_linux_mips64x.s b/vendor/golang.org/x/sys/unix/asm_linux_mips64x.s
new file mode 100644
index 0000000..ab9d638
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_linux_mips64x.s
@@ -0,0 +1,56 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux
+// +build mips64 mips64le
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System calls for mips64, Linux
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-56
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+ JMP syscall·Syscall6(SB)
+
+TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
+ JAL runtime·entersyscall(SB)
+ MOVV a1+8(FP), R4
+ MOVV a2+16(FP), R5
+ MOVV a3+24(FP), R6
+ MOVV R0, R7
+ MOVV R0, R8
+ MOVV R0, R9
+ MOVV trap+0(FP), R2 // syscall entry
+ SYSCALL
+ MOVV R2, r1+32(FP)
+ MOVV R3, r2+40(FP)
+ JAL runtime·exitsyscall(SB)
+ RET
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
+ JMP syscall·RawSyscall6(SB)
+
+TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
+ MOVV a1+8(FP), R4
+ MOVV a2+16(FP), R5
+ MOVV a3+24(FP), R6
+ MOVV R0, R7
+ MOVV R0, R8
+ MOVV R0, R9
+ MOVV trap+0(FP), R2 // syscall entry
+ SYSCALL
+ MOVV R2, r1+32(FP)
+ MOVV R3, r2+40(FP)
+ RET
diff --git a/vendor/golang.org/x/sys/unix/asm_linux_mipsx.s b/vendor/golang.org/x/sys/unix/asm_linux_mipsx.s
new file mode 100644
index 0000000..99e5399
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_linux_mipsx.s
@@ -0,0 +1,54 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux
+// +build mips mipsle
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System calls for mips, Linux
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-28
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-40
+ JMP syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-52
+ JMP syscall·Syscall9(SB)
+
+TEXT ·SyscallNoError(SB),NOSPLIT,$0-24
+ JAL runtime·entersyscall(SB)
+ MOVW a1+4(FP), R4
+ MOVW a2+8(FP), R5
+ MOVW a3+12(FP), R6
+ MOVW R0, R7
+ MOVW trap+0(FP), R2 // syscall entry
+ SYSCALL
+ MOVW R2, r1+16(FP) // r1
+ MOVW R3, r2+20(FP) // r2
+ JAL runtime·exitsyscall(SB)
+ RET
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-28
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
+ JMP syscall·RawSyscall6(SB)
+
+TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-24
+ MOVW a1+4(FP), R4
+ MOVW a2+8(FP), R5
+ MOVW a3+12(FP), R6
+ MOVW trap+0(FP), R2 // syscall entry
+ SYSCALL
+ MOVW R2, r1+16(FP)
+ MOVW R3, r2+20(FP)
+ RET
diff --git a/vendor/golang.org/x/sys/unix/asm_linux_ppc64x.s b/vendor/golang.org/x/sys/unix/asm_linux_ppc64x.s
new file mode 100644
index 0000000..88f7125
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_linux_ppc64x.s
@@ -0,0 +1,44 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build linux
+// +build ppc64 ppc64le
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System calls for ppc64, Linux
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
+ BL runtime·entersyscall(SB)
+ MOVD a1+8(FP), R3
+ MOVD a2+16(FP), R4
+ MOVD a3+24(FP), R5
+ MOVD R0, R6
+ MOVD R0, R7
+ MOVD R0, R8
+ MOVD trap+0(FP), R9 // syscall entry
+ SYSCALL R9
+ MOVD R3, r1+32(FP)
+ MOVD R4, r2+40(FP)
+ BL runtime·exitsyscall(SB)
+ RET
+
+TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
+ MOVD a1+8(FP), R3
+ MOVD a2+16(FP), R4
+ MOVD a3+24(FP), R5
+ MOVD R0, R6
+ MOVD R0, R7
+ MOVD R0, R8
+ MOVD trap+0(FP), R9 // syscall entry
+ SYSCALL R9
+ MOVD R3, r1+32(FP)
+ MOVD R4, r2+40(FP)
+ RET
diff --git a/vendor/golang.org/x/sys/unix/asm_linux_riscv64.s b/vendor/golang.org/x/sys/unix/asm_linux_riscv64.s
new file mode 100644
index 0000000..6db717d
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_linux_riscv64.s
@@ -0,0 +1,54 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build riscv64,!gccgo
+
+#include "textflag.h"
+
+//
+// System calls for linux/riscv64.
+//
+// Where available, just jump to package syscall's implementation of
+// these functions.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-56
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+ JMP syscall·Syscall6(SB)
+
+TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
+ CALL runtime·entersyscall(SB)
+ MOV a1+8(FP), A0
+ MOV a2+16(FP), A1
+ MOV a3+24(FP), A2
+ MOV $0, A3
+ MOV $0, A4
+ MOV $0, A5
+ MOV $0, A6
+ MOV trap+0(FP), A7 // syscall entry
+ ECALL
+ MOV A0, r1+32(FP) // r1
+ MOV A1, r2+40(FP) // r2
+ CALL runtime·exitsyscall(SB)
+ RET
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
+ JMP syscall·RawSyscall6(SB)
+
+TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
+ MOV a1+8(FP), A0
+ MOV a2+16(FP), A1
+ MOV a3+24(FP), A2
+ MOV ZERO, A3
+ MOV ZERO, A4
+ MOV ZERO, A5
+ MOV trap+0(FP), A7 // syscall entry
+ ECALL
+ MOV A0, r1+32(FP)
+ MOV A1, r2+40(FP)
+ RET
diff --git a/vendor/golang.org/x/sys/unix/asm_linux_s390x.s b/vendor/golang.org/x/sys/unix/asm_linux_s390x.s
new file mode 100644
index 0000000..a5a863c
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_linux_s390x.s
@@ -0,0 +1,56 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build s390x
+// +build linux
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System calls for s390x, Linux
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-56
+ BR syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+ BR syscall·Syscall6(SB)
+
+TEXT ·SyscallNoError(SB),NOSPLIT,$0-48
+ BL runtime·entersyscall(SB)
+ MOVD a1+8(FP), R2
+ MOVD a2+16(FP), R3
+ MOVD a3+24(FP), R4
+ MOVD $0, R5
+ MOVD $0, R6
+ MOVD $0, R7
+ MOVD trap+0(FP), R1 // syscall entry
+ SYSCALL
+ MOVD R2, r1+32(FP)
+ MOVD R3, r2+40(FP)
+ BL runtime·exitsyscall(SB)
+ RET
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+ BR syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
+ BR syscall·RawSyscall6(SB)
+
+TEXT ·RawSyscallNoError(SB),NOSPLIT,$0-48
+ MOVD a1+8(FP), R2
+ MOVD a2+16(FP), R3
+ MOVD a3+24(FP), R4
+ MOVD $0, R5
+ MOVD $0, R6
+ MOVD $0, R7
+ MOVD trap+0(FP), R1 // syscall entry
+ SYSCALL
+ MOVD R2, r1+32(FP)
+ MOVD R3, r2+40(FP)
+ RET
diff --git a/vendor/golang.org/x/sys/unix/asm_netbsd_386.s b/vendor/golang.org/x/sys/unix/asm_netbsd_386.s
new file mode 100644
index 0000000..48bdcd7
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_netbsd_386.s
@@ -0,0 +1,29 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System call support for 386, NetBSD
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-28
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-40
+ JMP syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-52
+ JMP syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-28
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
+ JMP syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_netbsd_amd64.s b/vendor/golang.org/x/sys/unix/asm_netbsd_amd64.s
new file mode 100644
index 0000000..2ede05c
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_netbsd_amd64.s
@@ -0,0 +1,29 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System call support for AMD64, NetBSD
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-56
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+ JMP syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-104
+ JMP syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
+ JMP syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_netbsd_arm.s b/vendor/golang.org/x/sys/unix/asm_netbsd_arm.s
new file mode 100644
index 0000000..e892857
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_netbsd_arm.s
@@ -0,0 +1,29 @@
+// Copyright 2013 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System call support for ARM, NetBSD
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-28
+ B syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-40
+ B syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-52
+ B syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-28
+ B syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
+ B syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_netbsd_arm64.s b/vendor/golang.org/x/sys/unix/asm_netbsd_arm64.s
new file mode 100644
index 0000000..6f98ba5
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_netbsd_arm64.s
@@ -0,0 +1,29 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System call support for ARM64, NetBSD
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-56
+ B syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+ B syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-104
+ B syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+ B syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
+ B syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_openbsd_386.s b/vendor/golang.org/x/sys/unix/asm_openbsd_386.s
new file mode 100644
index 0000000..00576f3
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_openbsd_386.s
@@ -0,0 +1,29 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System call support for 386, OpenBSD
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-28
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-40
+ JMP syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-52
+ JMP syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-28
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
+ JMP syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_openbsd_amd64.s b/vendor/golang.org/x/sys/unix/asm_openbsd_amd64.s
new file mode 100644
index 0000000..790ef77
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_openbsd_amd64.s
@@ -0,0 +1,29 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System call support for AMD64, OpenBSD
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-56
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+ JMP syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-104
+ JMP syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
+ JMP syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_openbsd_arm.s b/vendor/golang.org/x/sys/unix/asm_openbsd_arm.s
new file mode 100644
index 0000000..469bfa1
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_openbsd_arm.s
@@ -0,0 +1,29 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System call support for ARM, OpenBSD
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-28
+ B syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-40
+ B syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-52
+ B syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-28
+ B syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-40
+ B syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_openbsd_arm64.s b/vendor/golang.org/x/sys/unix/asm_openbsd_arm64.s
new file mode 100644
index 0000000..0cedea3
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_openbsd_arm64.s
@@ -0,0 +1,29 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System call support for arm64, OpenBSD
+//
+
+// Just jump to package syscall's implementation for all these functions.
+// The runtime may know about them.
+
+TEXT ·Syscall(SB),NOSPLIT,$0-56
+ JMP syscall·Syscall(SB)
+
+TEXT ·Syscall6(SB),NOSPLIT,$0-80
+ JMP syscall·Syscall6(SB)
+
+TEXT ·Syscall9(SB),NOSPLIT,$0-104
+ JMP syscall·Syscall9(SB)
+
+TEXT ·RawSyscall(SB),NOSPLIT,$0-56
+ JMP syscall·RawSyscall(SB)
+
+TEXT ·RawSyscall6(SB),NOSPLIT,$0-80
+ JMP syscall·RawSyscall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/asm_solaris_amd64.s b/vendor/golang.org/x/sys/unix/asm_solaris_amd64.s
new file mode 100644
index 0000000..ded8260
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/asm_solaris_amd64.s
@@ -0,0 +1,17 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !gccgo
+
+#include "textflag.h"
+
+//
+// System calls for amd64, Solaris are implemented in runtime/syscall_solaris.go
+//
+
+TEXT ·sysvicall6(SB),NOSPLIT,$0-88
+ JMP syscall·sysvicall6(SB)
+
+TEXT ·rawSysvicall6(SB),NOSPLIT,$0-88
+ JMP syscall·rawSysvicall6(SB)
diff --git a/vendor/golang.org/x/sys/unix/bluetooth_linux.go b/vendor/golang.org/x/sys/unix/bluetooth_linux.go
new file mode 100644
index 0000000..6e32296
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/bluetooth_linux.go
@@ -0,0 +1,35 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Bluetooth sockets and messages
+
+package unix
+
+// Bluetooth Protocols
+const (
+ BTPROTO_L2CAP = 0
+ BTPROTO_HCI = 1
+ BTPROTO_SCO = 2
+ BTPROTO_RFCOMM = 3
+ BTPROTO_BNEP = 4
+ BTPROTO_CMTP = 5
+ BTPROTO_HIDP = 6
+ BTPROTO_AVDTP = 7
+)
+
+const (
+ HCI_CHANNEL_RAW = 0
+ HCI_CHANNEL_USER = 1
+ HCI_CHANNEL_MONITOR = 2
+ HCI_CHANNEL_CONTROL = 3
+)
+
+// Socketoption Level
+const (
+ SOL_BLUETOOTH = 0x112
+ SOL_HCI = 0x0
+ SOL_L2CAP = 0x6
+ SOL_RFCOMM = 0x12
+ SOL_SCO = 0x11
+)
diff --git a/vendor/golang.org/x/sys/unix/cap_freebsd.go b/vendor/golang.org/x/sys/unix/cap_freebsd.go
new file mode 100644
index 0000000..df52048
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/cap_freebsd.go
@@ -0,0 +1,195 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build freebsd
+
+package unix
+
+import (
+ "errors"
+ "fmt"
+)
+
+// Go implementation of C mostly found in /usr/src/sys/kern/subr_capability.c
+
+const (
+ // This is the version of CapRights this package understands. See C implementation for parallels.
+ capRightsGoVersion = CAP_RIGHTS_VERSION_00
+ capArSizeMin = CAP_RIGHTS_VERSION_00 + 2
+ capArSizeMax = capRightsGoVersion + 2
+)
+
+var (
+ bit2idx = []int{
+ -1, 0, 1, -1, 2, -1, -1, -1, 3, -1, -1, -1, -1, -1, -1, -1,
+ 4, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ }
+)
+
+func capidxbit(right uint64) int {
+ return int((right >> 57) & 0x1f)
+}
+
+func rightToIndex(right uint64) (int, error) {
+ idx := capidxbit(right)
+ if idx < 0 || idx >= len(bit2idx) {
+ return -2, fmt.Errorf("index for right 0x%x out of range", right)
+ }
+ return bit2idx[idx], nil
+}
+
+func caprver(right uint64) int {
+ return int(right >> 62)
+}
+
+func capver(rights *CapRights) int {
+ return caprver(rights.Rights[0])
+}
+
+func caparsize(rights *CapRights) int {
+ return capver(rights) + 2
+}
+
+// CapRightsSet sets the permissions in setrights in rights.
+func CapRightsSet(rights *CapRights, setrights []uint64) error {
+ // This is essentially a copy of cap_rights_vset()
+ if capver(rights) != CAP_RIGHTS_VERSION_00 {
+ return fmt.Errorf("bad rights version %d", capver(rights))
+ }
+
+ n := caparsize(rights)
+ if n < capArSizeMin || n > capArSizeMax {
+ return errors.New("bad rights size")
+ }
+
+ for _, right := range setrights {
+ if caprver(right) != CAP_RIGHTS_VERSION_00 {
+ return errors.New("bad right version")
+ }
+ i, err := rightToIndex(right)
+ if err != nil {
+ return err
+ }
+ if i >= n {
+ return errors.New("index overflow")
+ }
+ if capidxbit(rights.Rights[i]) != capidxbit(right) {
+ return errors.New("index mismatch")
+ }
+ rights.Rights[i] |= right
+ if capidxbit(rights.Rights[i]) != capidxbit(right) {
+ return errors.New("index mismatch (after assign)")
+ }
+ }
+
+ return nil
+}
+
+// CapRightsClear clears the permissions in clearrights from rights.
+func CapRightsClear(rights *CapRights, clearrights []uint64) error {
+ // This is essentially a copy of cap_rights_vclear()
+ if capver(rights) != CAP_RIGHTS_VERSION_00 {
+ return fmt.Errorf("bad rights version %d", capver(rights))
+ }
+
+ n := caparsize(rights)
+ if n < capArSizeMin || n > capArSizeMax {
+ return errors.New("bad rights size")
+ }
+
+ for _, right := range clearrights {
+ if caprver(right) != CAP_RIGHTS_VERSION_00 {
+ return errors.New("bad right version")
+ }
+ i, err := rightToIndex(right)
+ if err != nil {
+ return err
+ }
+ if i >= n {
+ return errors.New("index overflow")
+ }
+ if capidxbit(rights.Rights[i]) != capidxbit(right) {
+ return errors.New("index mismatch")
+ }
+ rights.Rights[i] &= ^(right & 0x01FFFFFFFFFFFFFF)
+ if capidxbit(rights.Rights[i]) != capidxbit(right) {
+ return errors.New("index mismatch (after assign)")
+ }
+ }
+
+ return nil
+}
+
+// CapRightsIsSet checks whether all the permissions in setrights are present in rights.
+func CapRightsIsSet(rights *CapRights, setrights []uint64) (bool, error) {
+ // This is essentially a copy of cap_rights_is_vset()
+ if capver(rights) != CAP_RIGHTS_VERSION_00 {
+ return false, fmt.Errorf("bad rights version %d", capver(rights))
+ }
+
+ n := caparsize(rights)
+ if n < capArSizeMin || n > capArSizeMax {
+ return false, errors.New("bad rights size")
+ }
+
+ for _, right := range setrights {
+ if caprver(right) != CAP_RIGHTS_VERSION_00 {
+ return false, errors.New("bad right version")
+ }
+ i, err := rightToIndex(right)
+ if err != nil {
+ return false, err
+ }
+ if i >= n {
+ return false, errors.New("index overflow")
+ }
+ if capidxbit(rights.Rights[i]) != capidxbit(right) {
+ return false, errors.New("index mismatch")
+ }
+ if (rights.Rights[i] & right) != right {
+ return false, nil
+ }
+ }
+
+ return true, nil
+}
+
+func capright(idx uint64, bit uint64) uint64 {
+ return ((1 << (57 + idx)) | bit)
+}
+
+// CapRightsInit returns a pointer to an initialised CapRights structure filled with rights.
+// See man cap_rights_init(3) and rights(4).
+func CapRightsInit(rights []uint64) (*CapRights, error) {
+ var r CapRights
+ r.Rights[0] = (capRightsGoVersion << 62) | capright(0, 0)
+ r.Rights[1] = capright(1, 0)
+
+ err := CapRightsSet(&r, rights)
+ if err != nil {
+ return nil, err
+ }
+ return &r, nil
+}
+
+// CapRightsLimit reduces the operations permitted on fd to at most those contained in rights.
+// The capability rights on fd can never be increased by CapRightsLimit.
+// See man cap_rights_limit(2) and rights(4).
+func CapRightsLimit(fd uintptr, rights *CapRights) error {
+ return capRightsLimit(int(fd), rights)
+}
+
+// CapRightsGet returns a CapRights structure containing the operations permitted on fd.
+// See man cap_rights_get(3) and rights(4).
+func CapRightsGet(fd uintptr) (*CapRights, error) {
+ r, err := CapRightsInit(nil)
+ if err != nil {
+ return nil, err
+ }
+ err = capRightsGet(capRightsGoVersion, int(fd), r)
+ if err != nil {
+ return nil, err
+ }
+ return r, nil
+}
diff --git a/vendor/golang.org/x/sys/unix/constants.go b/vendor/golang.org/x/sys/unix/constants.go
new file mode 100644
index 0000000..3a6ac64
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/constants.go
@@ -0,0 +1,13 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package unix
+
+const (
+ R_OK = 0x4
+ W_OK = 0x2
+ X_OK = 0x1
+)
diff --git a/vendor/golang.org/x/sys/unix/dev_aix_ppc.go b/vendor/golang.org/x/sys/unix/dev_aix_ppc.go
new file mode 100644
index 0000000..5e5fb45
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/dev_aix_ppc.go
@@ -0,0 +1,27 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix
+// +build ppc
+
+// Functions to access/create device major and minor numbers matching the
+// encoding used by AIX.
+
+package unix
+
+// Major returns the major component of a Linux device number.
+func Major(dev uint64) uint32 {
+ return uint32((dev >> 16) & 0xffff)
+}
+
+// Minor returns the minor component of a Linux device number.
+func Minor(dev uint64) uint32 {
+ return uint32(dev & 0xffff)
+}
+
+// Mkdev returns a Linux device number generated from the given major and minor
+// components.
+func Mkdev(major, minor uint32) uint64 {
+ return uint64(((major) << 16) | (minor))
+}
diff --git a/vendor/golang.org/x/sys/unix/dev_aix_ppc64.go b/vendor/golang.org/x/sys/unix/dev_aix_ppc64.go
new file mode 100644
index 0000000..8b40124
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/dev_aix_ppc64.go
@@ -0,0 +1,29 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix
+// +build ppc64
+
+// Functions to access/create device major and minor numbers matching the
+// encoding used AIX.
+
+package unix
+
+// Major returns the major component of a Linux device number.
+func Major(dev uint64) uint32 {
+ return uint32((dev & 0x3fffffff00000000) >> 32)
+}
+
+// Minor returns the minor component of a Linux device number.
+func Minor(dev uint64) uint32 {
+ return uint32((dev & 0x00000000ffffffff) >> 0)
+}
+
+// Mkdev returns a Linux device number generated from the given major and minor
+// components.
+func Mkdev(major, minor uint32) uint64 {
+ var DEVNO64 uint64
+ DEVNO64 = 0x8000000000000000
+ return ((uint64(major) << 32) | (uint64(minor) & 0x00000000FFFFFFFF) | DEVNO64)
+}
diff --git a/vendor/golang.org/x/sys/unix/dev_darwin.go b/vendor/golang.org/x/sys/unix/dev_darwin.go
new file mode 100644
index 0000000..8d1dc0f
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/dev_darwin.go
@@ -0,0 +1,24 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Functions to access/create device major and minor numbers matching the
+// encoding used in Darwin's sys/types.h header.
+
+package unix
+
+// Major returns the major component of a Darwin device number.
+func Major(dev uint64) uint32 {
+ return uint32((dev >> 24) & 0xff)
+}
+
+// Minor returns the minor component of a Darwin device number.
+func Minor(dev uint64) uint32 {
+ return uint32(dev & 0xffffff)
+}
+
+// Mkdev returns a Darwin device number generated from the given major and minor
+// components.
+func Mkdev(major, minor uint32) uint64 {
+ return (uint64(major) << 24) | uint64(minor)
+}
diff --git a/vendor/golang.org/x/sys/unix/dev_dragonfly.go b/vendor/golang.org/x/sys/unix/dev_dragonfly.go
new file mode 100644
index 0000000..8502f20
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/dev_dragonfly.go
@@ -0,0 +1,30 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Functions to access/create device major and minor numbers matching the
+// encoding used in Dragonfly's sys/types.h header.
+//
+// The information below is extracted and adapted from sys/types.h:
+//
+// Minor gives a cookie instead of an index since in order to avoid changing the
+// meanings of bits 0-15 or wasting time and space shifting bits 16-31 for
+// devices that don't use them.
+
+package unix
+
+// Major returns the major component of a DragonFlyBSD device number.
+func Major(dev uint64) uint32 {
+ return uint32((dev >> 8) & 0xff)
+}
+
+// Minor returns the minor component of a DragonFlyBSD device number.
+func Minor(dev uint64) uint32 {
+ return uint32(dev & 0xffff00ff)
+}
+
+// Mkdev returns a DragonFlyBSD device number generated from the given major and
+// minor components.
+func Mkdev(major, minor uint32) uint64 {
+ return (uint64(major) << 8) | uint64(minor)
+}
diff --git a/vendor/golang.org/x/sys/unix/dev_freebsd.go b/vendor/golang.org/x/sys/unix/dev_freebsd.go
new file mode 100644
index 0000000..eba3b4b
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/dev_freebsd.go
@@ -0,0 +1,30 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Functions to access/create device major and minor numbers matching the
+// encoding used in FreeBSD's sys/types.h header.
+//
+// The information below is extracted and adapted from sys/types.h:
+//
+// Minor gives a cookie instead of an index since in order to avoid changing the
+// meanings of bits 0-15 or wasting time and space shifting bits 16-31 for
+// devices that don't use them.
+
+package unix
+
+// Major returns the major component of a FreeBSD device number.
+func Major(dev uint64) uint32 {
+ return uint32((dev >> 8) & 0xff)
+}
+
+// Minor returns the minor component of a FreeBSD device number.
+func Minor(dev uint64) uint32 {
+ return uint32(dev & 0xffff00ff)
+}
+
+// Mkdev returns a FreeBSD device number generated from the given major and
+// minor components.
+func Mkdev(major, minor uint32) uint64 {
+ return (uint64(major) << 8) | uint64(minor)
+}
diff --git a/vendor/golang.org/x/sys/unix/dev_linux.go b/vendor/golang.org/x/sys/unix/dev_linux.go
new file mode 100644
index 0000000..d165d6f
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/dev_linux.go
@@ -0,0 +1,42 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Functions to access/create device major and minor numbers matching the
+// encoding used by the Linux kernel and glibc.
+//
+// The information below is extracted and adapted from bits/sysmacros.h in the
+// glibc sources:
+//
+// dev_t in glibc is 64-bit, with 32-bit major and minor numbers. glibc's
+// default encoding is MMMM Mmmm mmmM MMmm, where M is a hex digit of the major
+// number and m is a hex digit of the minor number. This is backward compatible
+// with legacy systems where dev_t is 16 bits wide, encoded as MMmm. It is also
+// backward compatible with the Linux kernel, which for some architectures uses
+// 32-bit dev_t, encoded as mmmM MMmm.
+
+package unix
+
+// Major returns the major component of a Linux device number.
+func Major(dev uint64) uint32 {
+ major := uint32((dev & 0x00000000000fff00) >> 8)
+ major |= uint32((dev & 0xfffff00000000000) >> 32)
+ return major
+}
+
+// Minor returns the minor component of a Linux device number.
+func Minor(dev uint64) uint32 {
+ minor := uint32((dev & 0x00000000000000ff) >> 0)
+ minor |= uint32((dev & 0x00000ffffff00000) >> 12)
+ return minor
+}
+
+// Mkdev returns a Linux device number generated from the given major and minor
+// components.
+func Mkdev(major, minor uint32) uint64 {
+ dev := (uint64(major) & 0x00000fff) << 8
+ dev |= (uint64(major) & 0xfffff000) << 32
+ dev |= (uint64(minor) & 0x000000ff) << 0
+ dev |= (uint64(minor) & 0xffffff00) << 12
+ return dev
+}
diff --git a/vendor/golang.org/x/sys/unix/dev_netbsd.go b/vendor/golang.org/x/sys/unix/dev_netbsd.go
new file mode 100644
index 0000000..b4a203d
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/dev_netbsd.go
@@ -0,0 +1,29 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Functions to access/create device major and minor numbers matching the
+// encoding used in NetBSD's sys/types.h header.
+
+package unix
+
+// Major returns the major component of a NetBSD device number.
+func Major(dev uint64) uint32 {
+ return uint32((dev & 0x000fff00) >> 8)
+}
+
+// Minor returns the minor component of a NetBSD device number.
+func Minor(dev uint64) uint32 {
+ minor := uint32((dev & 0x000000ff) >> 0)
+ minor |= uint32((dev & 0xfff00000) >> 12)
+ return minor
+}
+
+// Mkdev returns a NetBSD device number generated from the given major and minor
+// components.
+func Mkdev(major, minor uint32) uint64 {
+ dev := (uint64(major) << 8) & 0x000fff00
+ dev |= (uint64(minor) << 12) & 0xfff00000
+ dev |= (uint64(minor) << 0) & 0x000000ff
+ return dev
+}
diff --git a/vendor/golang.org/x/sys/unix/dev_openbsd.go b/vendor/golang.org/x/sys/unix/dev_openbsd.go
new file mode 100644
index 0000000..f3430c4
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/dev_openbsd.go
@@ -0,0 +1,29 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Functions to access/create device major and minor numbers matching the
+// encoding used in OpenBSD's sys/types.h header.
+
+package unix
+
+// Major returns the major component of an OpenBSD device number.
+func Major(dev uint64) uint32 {
+ return uint32((dev & 0x0000ff00) >> 8)
+}
+
+// Minor returns the minor component of an OpenBSD device number.
+func Minor(dev uint64) uint32 {
+ minor := uint32((dev & 0x000000ff) >> 0)
+ minor |= uint32((dev & 0xffff0000) >> 8)
+ return minor
+}
+
+// Mkdev returns an OpenBSD device number generated from the given major and minor
+// components.
+func Mkdev(major, minor uint32) uint64 {
+ dev := (uint64(major) << 8) & 0x0000ff00
+ dev |= (uint64(minor) << 8) & 0xffff0000
+ dev |= (uint64(minor) << 0) & 0x000000ff
+ return dev
+}
diff --git a/vendor/golang.org/x/sys/unix/dirent.go b/vendor/golang.org/x/sys/unix/dirent.go
new file mode 100644
index 0000000..304016b
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/dirent.go
@@ -0,0 +1,102 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package unix
+
+import "unsafe"
+
+// readInt returns the size-bytes unsigned integer in native byte order at offset off.
+func readInt(b []byte, off, size uintptr) (u uint64, ok bool) {
+ if len(b) < int(off+size) {
+ return 0, false
+ }
+ if isBigEndian {
+ return readIntBE(b[off:], size), true
+ }
+ return readIntLE(b[off:], size), true
+}
+
+func readIntBE(b []byte, size uintptr) uint64 {
+ switch size {
+ case 1:
+ return uint64(b[0])
+ case 2:
+ _ = b[1] // bounds check hint to compiler; see golang.org/issue/14808
+ return uint64(b[1]) | uint64(b[0])<<8
+ case 4:
+ _ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
+ return uint64(b[3]) | uint64(b[2])<<8 | uint64(b[1])<<16 | uint64(b[0])<<24
+ case 8:
+ _ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
+ return uint64(b[7]) | uint64(b[6])<<8 | uint64(b[5])<<16 | uint64(b[4])<<24 |
+ uint64(b[3])<<32 | uint64(b[2])<<40 | uint64(b[1])<<48 | uint64(b[0])<<56
+ default:
+ panic("syscall: readInt with unsupported size")
+ }
+}
+
+func readIntLE(b []byte, size uintptr) uint64 {
+ switch size {
+ case 1:
+ return uint64(b[0])
+ case 2:
+ _ = b[1] // bounds check hint to compiler; see golang.org/issue/14808
+ return uint64(b[0]) | uint64(b[1])<<8
+ case 4:
+ _ = b[3] // bounds check hint to compiler; see golang.org/issue/14808
+ return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24
+ case 8:
+ _ = b[7] // bounds check hint to compiler; see golang.org/issue/14808
+ return uint64(b[0]) | uint64(b[1])<<8 | uint64(b[2])<<16 | uint64(b[3])<<24 |
+ uint64(b[4])<<32 | uint64(b[5])<<40 | uint64(b[6])<<48 | uint64(b[7])<<56
+ default:
+ panic("syscall: readInt with unsupported size")
+ }
+}
+
+// ParseDirent parses up to max directory entries in buf,
+// appending the names to names. It returns the number of
+// bytes consumed from buf, the number of entries added
+// to names, and the new names slice.
+func ParseDirent(buf []byte, max int, names []string) (consumed int, count int, newnames []string) {
+ origlen := len(buf)
+ count = 0
+ for max != 0 && len(buf) > 0 {
+ reclen, ok := direntReclen(buf)
+ if !ok || reclen > uint64(len(buf)) {
+ return origlen, count, names
+ }
+ rec := buf[:reclen]
+ buf = buf[reclen:]
+ ino, ok := direntIno(rec)
+ if !ok {
+ break
+ }
+ if ino == 0 { // File absent in directory.
+ continue
+ }
+ const namoff = uint64(unsafe.Offsetof(Dirent{}.Name))
+ namlen, ok := direntNamlen(rec)
+ if !ok || namoff+namlen > uint64(len(rec)) {
+ break
+ }
+ name := rec[namoff : namoff+namlen]
+ for i, c := range name {
+ if c == 0 {
+ name = name[:i]
+ break
+ }
+ }
+ // Check for useless names before allocating a string.
+ if string(name) == "." || string(name) == ".." {
+ continue
+ }
+ max--
+ count++
+ names = append(names, string(name))
+ }
+ return origlen - len(buf), count, names
+}
diff --git a/vendor/golang.org/x/sys/unix/endian_big.go b/vendor/golang.org/x/sys/unix/endian_big.go
new file mode 100644
index 0000000..5e92690
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/endian_big.go
@@ -0,0 +1,9 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+//
+// +build ppc64 s390x mips mips64
+
+package unix
+
+const isBigEndian = true
diff --git a/vendor/golang.org/x/sys/unix/endian_little.go b/vendor/golang.org/x/sys/unix/endian_little.go
new file mode 100644
index 0000000..bcdb5d3
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/endian_little.go
@@ -0,0 +1,9 @@
+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+//
+// +build 386 amd64 amd64p32 arm arm64 ppc64le mipsle mips64le riscv64
+
+package unix
+
+const isBigEndian = false
diff --git a/vendor/golang.org/x/sys/unix/env_unix.go b/vendor/golang.org/x/sys/unix/env_unix.go
new file mode 100644
index 0000000..84178b0
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/env_unix.go
@@ -0,0 +1,31 @@
+// Copyright 2010 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+// Unix environment variables.
+
+package unix
+
+import "syscall"
+
+func Getenv(key string) (value string, found bool) {
+ return syscall.Getenv(key)
+}
+
+func Setenv(key, value string) error {
+ return syscall.Setenv(key, value)
+}
+
+func Clearenv() {
+ syscall.Clearenv()
+}
+
+func Environ() []string {
+ return syscall.Environ()
+}
+
+func Unsetenv(key string) error {
+ return syscall.Unsetenv(key)
+}
diff --git a/vendor/golang.org/x/sys/unix/errors_freebsd_386.go b/vendor/golang.org/x/sys/unix/errors_freebsd_386.go
new file mode 100644
index 0000000..c56bc8b
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/errors_freebsd_386.go
@@ -0,0 +1,227 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Constants that were deprecated or moved to enums in the FreeBSD headers. Keep
+// them here for backwards compatibility.
+
+package unix
+
+const (
+ IFF_SMART = 0x20
+ IFT_1822 = 0x2
+ IFT_A12MPPSWITCH = 0x82
+ IFT_AAL2 = 0xbb
+ IFT_AAL5 = 0x31
+ IFT_ADSL = 0x5e
+ IFT_AFLANE8023 = 0x3b
+ IFT_AFLANE8025 = 0x3c
+ IFT_ARAP = 0x58
+ IFT_ARCNET = 0x23
+ IFT_ARCNETPLUS = 0x24
+ IFT_ASYNC = 0x54
+ IFT_ATM = 0x25
+ IFT_ATMDXI = 0x69
+ IFT_ATMFUNI = 0x6a
+ IFT_ATMIMA = 0x6b
+ IFT_ATMLOGICAL = 0x50
+ IFT_ATMRADIO = 0xbd
+ IFT_ATMSUBINTERFACE = 0x86
+ IFT_ATMVCIENDPT = 0xc2
+ IFT_ATMVIRTUAL = 0x95
+ IFT_BGPPOLICYACCOUNTING = 0xa2
+ IFT_BSC = 0x53
+ IFT_CCTEMUL = 0x3d
+ IFT_CEPT = 0x13
+ IFT_CES = 0x85
+ IFT_CHANNEL = 0x46
+ IFT_CNR = 0x55
+ IFT_COFFEE = 0x84
+ IFT_COMPOSITELINK = 0x9b
+ IFT_DCN = 0x8d
+ IFT_DIGITALPOWERLINE = 0x8a
+ IFT_DIGITALWRAPPEROVERHEADCHANNEL = 0xba
+ IFT_DLSW = 0x4a
+ IFT_DOCSCABLEDOWNSTREAM = 0x80
+ IFT_DOCSCABLEMACLAYER = 0x7f
+ IFT_DOCSCABLEUPSTREAM = 0x81
+ IFT_DS0 = 0x51
+ IFT_DS0BUNDLE = 0x52
+ IFT_DS1FDL = 0xaa
+ IFT_DS3 = 0x1e
+ IFT_DTM = 0x8c
+ IFT_DVBASILN = 0xac
+ IFT_DVBASIOUT = 0xad
+ IFT_DVBRCCDOWNSTREAM = 0x93
+ IFT_DVBRCCMACLAYER = 0x92
+ IFT_DVBRCCUPSTREAM = 0x94
+ IFT_ENC = 0xf4
+ IFT_EON = 0x19
+ IFT_EPLRS = 0x57
+ IFT_ESCON = 0x49
+ IFT_ETHER = 0x6
+ IFT_FAITH = 0xf2
+ IFT_FAST = 0x7d
+ IFT_FASTETHER = 0x3e
+ IFT_FASTETHERFX = 0x45
+ IFT_FDDI = 0xf
+ IFT_FIBRECHANNEL = 0x38
+ IFT_FRAMERELAYINTERCONNECT = 0x3a
+ IFT_FRAMERELAYMPI = 0x5c
+ IFT_FRDLCIENDPT = 0xc1
+ IFT_FRELAY = 0x20
+ IFT_FRELAYDCE = 0x2c
+ IFT_FRF16MFRBUNDLE = 0xa3
+ IFT_FRFORWARD = 0x9e
+ IFT_G703AT2MB = 0x43
+ IFT_G703AT64K = 0x42
+ IFT_GIF = 0xf0
+ IFT_GIGABITETHERNET = 0x75
+ IFT_GR303IDT = 0xb2
+ IFT_GR303RDT = 0xb1
+ IFT_H323GATEKEEPER = 0xa4
+ IFT_H323PROXY = 0xa5
+ IFT_HDH1822 = 0x3
+ IFT_HDLC = 0x76
+ IFT_HDSL2 = 0xa8
+ IFT_HIPERLAN2 = 0xb7
+ IFT_HIPPI = 0x2f
+ IFT_HIPPIINTERFACE = 0x39
+ IFT_HOSTPAD = 0x5a
+ IFT_HSSI = 0x2e
+ IFT_HY = 0xe
+ IFT_IBM370PARCHAN = 0x48
+ IFT_IDSL = 0x9a
+ IFT_IEEE80211 = 0x47
+ IFT_IEEE80212 = 0x37
+ IFT_IEEE8023ADLAG = 0xa1
+ IFT_IFGSN = 0x91
+ IFT_IMT = 0xbe
+ IFT_INTERLEAVE = 0x7c
+ IFT_IP = 0x7e
+ IFT_IPFORWARD = 0x8e
+ IFT_IPOVERATM = 0x72
+ IFT_IPOVERCDLC = 0x6d
+ IFT_IPOVERCLAW = 0x6e
+ IFT_IPSWITCH = 0x4e
+ IFT_IPXIP = 0xf9
+ IFT_ISDN = 0x3f
+ IFT_ISDNBASIC = 0x14
+ IFT_ISDNPRIMARY = 0x15
+ IFT_ISDNS = 0x4b
+ IFT_ISDNU = 0x4c
+ IFT_ISO88022LLC = 0x29
+ IFT_ISO88023 = 0x7
+ IFT_ISO88024 = 0x8
+ IFT_ISO88025 = 0x9
+ IFT_ISO88025CRFPINT = 0x62
+ IFT_ISO88025DTR = 0x56
+ IFT_ISO88025FIBER = 0x73
+ IFT_ISO88026 = 0xa
+ IFT_ISUP = 0xb3
+ IFT_L3IPXVLAN = 0x89
+ IFT_LAPB = 0x10
+ IFT_LAPD = 0x4d
+ IFT_LAPF = 0x77
+ IFT_LOCALTALK = 0x2a
+ IFT_LOOP = 0x18
+ IFT_MEDIAMAILOVERIP = 0x8b
+ IFT_MFSIGLINK = 0xa7
+ IFT_MIOX25 = 0x26
+ IFT_MODEM = 0x30
+ IFT_MPC = 0x71
+ IFT_MPLS = 0xa6
+ IFT_MPLSTUNNEL = 0x96
+ IFT_MSDSL = 0x8f
+ IFT_MVL = 0xbf
+ IFT_MYRINET = 0x63
+ IFT_NFAS = 0xaf
+ IFT_NSIP = 0x1b
+ IFT_OPTICALCHANNEL = 0xc3
+ IFT_OPTICALTRANSPORT = 0xc4
+ IFT_OTHER = 0x1
+ IFT_P10 = 0xc
+ IFT_P80 = 0xd
+ IFT_PARA = 0x22
+ IFT_PFLOG = 0xf6
+ IFT_PFSYNC = 0xf7
+ IFT_PLC = 0xae
+ IFT_POS = 0xab
+ IFT_PPPMULTILINKBUNDLE = 0x6c
+ IFT_PROPBWAP2MP = 0xb8
+ IFT_PROPCNLS = 0x59
+ IFT_PROPDOCSWIRELESSDOWNSTREAM = 0xb5
+ IFT_PROPDOCSWIRELESSMACLAYER = 0xb4
+ IFT_PROPDOCSWIRELESSUPSTREAM = 0xb6
+ IFT_PROPMUX = 0x36
+ IFT_PROPWIRELESSP2P = 0x9d
+ IFT_PTPSERIAL = 0x16
+ IFT_PVC = 0xf1
+ IFT_QLLC = 0x44
+ IFT_RADIOMAC = 0xbc
+ IFT_RADSL = 0x5f
+ IFT_REACHDSL = 0xc0
+ IFT_RFC1483 = 0x9f
+ IFT_RS232 = 0x21
+ IFT_RSRB = 0x4f
+ IFT_SDLC = 0x11
+ IFT_SDSL = 0x60
+ IFT_SHDSL = 0xa9
+ IFT_SIP = 0x1f
+ IFT_SLIP = 0x1c
+ IFT_SMDSDXI = 0x2b
+ IFT_SMDSICIP = 0x34
+ IFT_SONET = 0x27
+ IFT_SONETOVERHEADCHANNEL = 0xb9
+ IFT_SONETPATH = 0x32
+ IFT_SONETVT = 0x33
+ IFT_SRP = 0x97
+ IFT_SS7SIGLINK = 0x9c
+ IFT_STACKTOSTACK = 0x6f
+ IFT_STARLAN = 0xb
+ IFT_STF = 0xd7
+ IFT_T1 = 0x12
+ IFT_TDLC = 0x74
+ IFT_TERMPAD = 0x5b
+ IFT_TR008 = 0xb0
+ IFT_TRANSPHDLC = 0x7b
+ IFT_TUNNEL = 0x83
+ IFT_ULTRA = 0x1d
+ IFT_USB = 0xa0
+ IFT_V11 = 0x40
+ IFT_V35 = 0x2d
+ IFT_V36 = 0x41
+ IFT_V37 = 0x78
+ IFT_VDSL = 0x61
+ IFT_VIRTUALIPADDRESS = 0x70
+ IFT_VOICEEM = 0x64
+ IFT_VOICEENCAP = 0x67
+ IFT_VOICEFXO = 0x65
+ IFT_VOICEFXS = 0x66
+ IFT_VOICEOVERATM = 0x98
+ IFT_VOICEOVERFRAMERELAY = 0x99
+ IFT_VOICEOVERIP = 0x68
+ IFT_X213 = 0x5d
+ IFT_X25 = 0x5
+ IFT_X25DDN = 0x4
+ IFT_X25HUNTGROUP = 0x7a
+ IFT_X25MLP = 0x79
+ IFT_X25PLE = 0x28
+ IFT_XETHER = 0x1a
+ IPPROTO_MAXID = 0x34
+ IPV6_FAITH = 0x1d
+ IP_FAITH = 0x16
+ MAP_NORESERVE = 0x40
+ MAP_RENAME = 0x20
+ NET_RT_MAXID = 0x6
+ RTF_PRCLONING = 0x10000
+ RTM_OLDADD = 0x9
+ RTM_OLDDEL = 0xa
+ SIOCADDRT = 0x8030720a
+ SIOCALIFADDR = 0x8118691b
+ SIOCDELRT = 0x8030720b
+ SIOCDLIFADDR = 0x8118691d
+ SIOCGLIFADDR = 0xc118691c
+ SIOCGLIFPHYADDR = 0xc118694b
+ SIOCSLIFPHYADDR = 0x8118694a
+)
diff --git a/vendor/golang.org/x/sys/unix/errors_freebsd_amd64.go b/vendor/golang.org/x/sys/unix/errors_freebsd_amd64.go
new file mode 100644
index 0000000..3e97711
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/errors_freebsd_amd64.go
@@ -0,0 +1,227 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Constants that were deprecated or moved to enums in the FreeBSD headers. Keep
+// them here for backwards compatibility.
+
+package unix
+
+const (
+ IFF_SMART = 0x20
+ IFT_1822 = 0x2
+ IFT_A12MPPSWITCH = 0x82
+ IFT_AAL2 = 0xbb
+ IFT_AAL5 = 0x31
+ IFT_ADSL = 0x5e
+ IFT_AFLANE8023 = 0x3b
+ IFT_AFLANE8025 = 0x3c
+ IFT_ARAP = 0x58
+ IFT_ARCNET = 0x23
+ IFT_ARCNETPLUS = 0x24
+ IFT_ASYNC = 0x54
+ IFT_ATM = 0x25
+ IFT_ATMDXI = 0x69
+ IFT_ATMFUNI = 0x6a
+ IFT_ATMIMA = 0x6b
+ IFT_ATMLOGICAL = 0x50
+ IFT_ATMRADIO = 0xbd
+ IFT_ATMSUBINTERFACE = 0x86
+ IFT_ATMVCIENDPT = 0xc2
+ IFT_ATMVIRTUAL = 0x95
+ IFT_BGPPOLICYACCOUNTING = 0xa2
+ IFT_BSC = 0x53
+ IFT_CCTEMUL = 0x3d
+ IFT_CEPT = 0x13
+ IFT_CES = 0x85
+ IFT_CHANNEL = 0x46
+ IFT_CNR = 0x55
+ IFT_COFFEE = 0x84
+ IFT_COMPOSITELINK = 0x9b
+ IFT_DCN = 0x8d
+ IFT_DIGITALPOWERLINE = 0x8a
+ IFT_DIGITALWRAPPEROVERHEADCHANNEL = 0xba
+ IFT_DLSW = 0x4a
+ IFT_DOCSCABLEDOWNSTREAM = 0x80
+ IFT_DOCSCABLEMACLAYER = 0x7f
+ IFT_DOCSCABLEUPSTREAM = 0x81
+ IFT_DS0 = 0x51
+ IFT_DS0BUNDLE = 0x52
+ IFT_DS1FDL = 0xaa
+ IFT_DS3 = 0x1e
+ IFT_DTM = 0x8c
+ IFT_DVBASILN = 0xac
+ IFT_DVBASIOUT = 0xad
+ IFT_DVBRCCDOWNSTREAM = 0x93
+ IFT_DVBRCCMACLAYER = 0x92
+ IFT_DVBRCCUPSTREAM = 0x94
+ IFT_ENC = 0xf4
+ IFT_EON = 0x19
+ IFT_EPLRS = 0x57
+ IFT_ESCON = 0x49
+ IFT_ETHER = 0x6
+ IFT_FAITH = 0xf2
+ IFT_FAST = 0x7d
+ IFT_FASTETHER = 0x3e
+ IFT_FASTETHERFX = 0x45
+ IFT_FDDI = 0xf
+ IFT_FIBRECHANNEL = 0x38
+ IFT_FRAMERELAYINTERCONNECT = 0x3a
+ IFT_FRAMERELAYMPI = 0x5c
+ IFT_FRDLCIENDPT = 0xc1
+ IFT_FRELAY = 0x20
+ IFT_FRELAYDCE = 0x2c
+ IFT_FRF16MFRBUNDLE = 0xa3
+ IFT_FRFORWARD = 0x9e
+ IFT_G703AT2MB = 0x43
+ IFT_G703AT64K = 0x42
+ IFT_GIF = 0xf0
+ IFT_GIGABITETHERNET = 0x75
+ IFT_GR303IDT = 0xb2
+ IFT_GR303RDT = 0xb1
+ IFT_H323GATEKEEPER = 0xa4
+ IFT_H323PROXY = 0xa5
+ IFT_HDH1822 = 0x3
+ IFT_HDLC = 0x76
+ IFT_HDSL2 = 0xa8
+ IFT_HIPERLAN2 = 0xb7
+ IFT_HIPPI = 0x2f
+ IFT_HIPPIINTERFACE = 0x39
+ IFT_HOSTPAD = 0x5a
+ IFT_HSSI = 0x2e
+ IFT_HY = 0xe
+ IFT_IBM370PARCHAN = 0x48
+ IFT_IDSL = 0x9a
+ IFT_IEEE80211 = 0x47
+ IFT_IEEE80212 = 0x37
+ IFT_IEEE8023ADLAG = 0xa1
+ IFT_IFGSN = 0x91
+ IFT_IMT = 0xbe
+ IFT_INTERLEAVE = 0x7c
+ IFT_IP = 0x7e
+ IFT_IPFORWARD = 0x8e
+ IFT_IPOVERATM = 0x72
+ IFT_IPOVERCDLC = 0x6d
+ IFT_IPOVERCLAW = 0x6e
+ IFT_IPSWITCH = 0x4e
+ IFT_IPXIP = 0xf9
+ IFT_ISDN = 0x3f
+ IFT_ISDNBASIC = 0x14
+ IFT_ISDNPRIMARY = 0x15
+ IFT_ISDNS = 0x4b
+ IFT_ISDNU = 0x4c
+ IFT_ISO88022LLC = 0x29
+ IFT_ISO88023 = 0x7
+ IFT_ISO88024 = 0x8
+ IFT_ISO88025 = 0x9
+ IFT_ISO88025CRFPINT = 0x62
+ IFT_ISO88025DTR = 0x56
+ IFT_ISO88025FIBER = 0x73
+ IFT_ISO88026 = 0xa
+ IFT_ISUP = 0xb3
+ IFT_L3IPXVLAN = 0x89
+ IFT_LAPB = 0x10
+ IFT_LAPD = 0x4d
+ IFT_LAPF = 0x77
+ IFT_LOCALTALK = 0x2a
+ IFT_LOOP = 0x18
+ IFT_MEDIAMAILOVERIP = 0x8b
+ IFT_MFSIGLINK = 0xa7
+ IFT_MIOX25 = 0x26
+ IFT_MODEM = 0x30
+ IFT_MPC = 0x71
+ IFT_MPLS = 0xa6
+ IFT_MPLSTUNNEL = 0x96
+ IFT_MSDSL = 0x8f
+ IFT_MVL = 0xbf
+ IFT_MYRINET = 0x63
+ IFT_NFAS = 0xaf
+ IFT_NSIP = 0x1b
+ IFT_OPTICALCHANNEL = 0xc3
+ IFT_OPTICALTRANSPORT = 0xc4
+ IFT_OTHER = 0x1
+ IFT_P10 = 0xc
+ IFT_P80 = 0xd
+ IFT_PARA = 0x22
+ IFT_PFLOG = 0xf6
+ IFT_PFSYNC = 0xf7
+ IFT_PLC = 0xae
+ IFT_POS = 0xab
+ IFT_PPPMULTILINKBUNDLE = 0x6c
+ IFT_PROPBWAP2MP = 0xb8
+ IFT_PROPCNLS = 0x59
+ IFT_PROPDOCSWIRELESSDOWNSTREAM = 0xb5
+ IFT_PROPDOCSWIRELESSMACLAYER = 0xb4
+ IFT_PROPDOCSWIRELESSUPSTREAM = 0xb6
+ IFT_PROPMUX = 0x36
+ IFT_PROPWIRELESSP2P = 0x9d
+ IFT_PTPSERIAL = 0x16
+ IFT_PVC = 0xf1
+ IFT_QLLC = 0x44
+ IFT_RADIOMAC = 0xbc
+ IFT_RADSL = 0x5f
+ IFT_REACHDSL = 0xc0
+ IFT_RFC1483 = 0x9f
+ IFT_RS232 = 0x21
+ IFT_RSRB = 0x4f
+ IFT_SDLC = 0x11
+ IFT_SDSL = 0x60
+ IFT_SHDSL = 0xa9
+ IFT_SIP = 0x1f
+ IFT_SLIP = 0x1c
+ IFT_SMDSDXI = 0x2b
+ IFT_SMDSICIP = 0x34
+ IFT_SONET = 0x27
+ IFT_SONETOVERHEADCHANNEL = 0xb9
+ IFT_SONETPATH = 0x32
+ IFT_SONETVT = 0x33
+ IFT_SRP = 0x97
+ IFT_SS7SIGLINK = 0x9c
+ IFT_STACKTOSTACK = 0x6f
+ IFT_STARLAN = 0xb
+ IFT_STF = 0xd7
+ IFT_T1 = 0x12
+ IFT_TDLC = 0x74
+ IFT_TERMPAD = 0x5b
+ IFT_TR008 = 0xb0
+ IFT_TRANSPHDLC = 0x7b
+ IFT_TUNNEL = 0x83
+ IFT_ULTRA = 0x1d
+ IFT_USB = 0xa0
+ IFT_V11 = 0x40
+ IFT_V35 = 0x2d
+ IFT_V36 = 0x41
+ IFT_V37 = 0x78
+ IFT_VDSL = 0x61
+ IFT_VIRTUALIPADDRESS = 0x70
+ IFT_VOICEEM = 0x64
+ IFT_VOICEENCAP = 0x67
+ IFT_VOICEFXO = 0x65
+ IFT_VOICEFXS = 0x66
+ IFT_VOICEOVERATM = 0x98
+ IFT_VOICEOVERFRAMERELAY = 0x99
+ IFT_VOICEOVERIP = 0x68
+ IFT_X213 = 0x5d
+ IFT_X25 = 0x5
+ IFT_X25DDN = 0x4
+ IFT_X25HUNTGROUP = 0x7a
+ IFT_X25MLP = 0x79
+ IFT_X25PLE = 0x28
+ IFT_XETHER = 0x1a
+ IPPROTO_MAXID = 0x34
+ IPV6_FAITH = 0x1d
+ IP_FAITH = 0x16
+ MAP_NORESERVE = 0x40
+ MAP_RENAME = 0x20
+ NET_RT_MAXID = 0x6
+ RTF_PRCLONING = 0x10000
+ RTM_OLDADD = 0x9
+ RTM_OLDDEL = 0xa
+ SIOCADDRT = 0x8040720a
+ SIOCALIFADDR = 0x8118691b
+ SIOCDELRT = 0x8040720b
+ SIOCDLIFADDR = 0x8118691d
+ SIOCGLIFADDR = 0xc118691c
+ SIOCGLIFPHYADDR = 0xc118694b
+ SIOCSLIFPHYADDR = 0x8118694a
+)
diff --git a/vendor/golang.org/x/sys/unix/errors_freebsd_arm.go b/vendor/golang.org/x/sys/unix/errors_freebsd_arm.go
new file mode 100644
index 0000000..856dca3
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/errors_freebsd_arm.go
@@ -0,0 +1,226 @@
+// Copyright 2017 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package unix
+
+const (
+ IFT_1822 = 0x2
+ IFT_A12MPPSWITCH = 0x82
+ IFT_AAL2 = 0xbb
+ IFT_AAL5 = 0x31
+ IFT_ADSL = 0x5e
+ IFT_AFLANE8023 = 0x3b
+ IFT_AFLANE8025 = 0x3c
+ IFT_ARAP = 0x58
+ IFT_ARCNET = 0x23
+ IFT_ARCNETPLUS = 0x24
+ IFT_ASYNC = 0x54
+ IFT_ATM = 0x25
+ IFT_ATMDXI = 0x69
+ IFT_ATMFUNI = 0x6a
+ IFT_ATMIMA = 0x6b
+ IFT_ATMLOGICAL = 0x50
+ IFT_ATMRADIO = 0xbd
+ IFT_ATMSUBINTERFACE = 0x86
+ IFT_ATMVCIENDPT = 0xc2
+ IFT_ATMVIRTUAL = 0x95
+ IFT_BGPPOLICYACCOUNTING = 0xa2
+ IFT_BSC = 0x53
+ IFT_CCTEMUL = 0x3d
+ IFT_CEPT = 0x13
+ IFT_CES = 0x85
+ IFT_CHANNEL = 0x46
+ IFT_CNR = 0x55
+ IFT_COFFEE = 0x84
+ IFT_COMPOSITELINK = 0x9b
+ IFT_DCN = 0x8d
+ IFT_DIGITALPOWERLINE = 0x8a
+ IFT_DIGITALWRAPPEROVERHEADCHANNEL = 0xba
+ IFT_DLSW = 0x4a
+ IFT_DOCSCABLEDOWNSTREAM = 0x80
+ IFT_DOCSCABLEMACLAYER = 0x7f
+ IFT_DOCSCABLEUPSTREAM = 0x81
+ IFT_DS0 = 0x51
+ IFT_DS0BUNDLE = 0x52
+ IFT_DS1FDL = 0xaa
+ IFT_DS3 = 0x1e
+ IFT_DTM = 0x8c
+ IFT_DVBASILN = 0xac
+ IFT_DVBASIOUT = 0xad
+ IFT_DVBRCCDOWNSTREAM = 0x93
+ IFT_DVBRCCMACLAYER = 0x92
+ IFT_DVBRCCUPSTREAM = 0x94
+ IFT_ENC = 0xf4
+ IFT_EON = 0x19
+ IFT_EPLRS = 0x57
+ IFT_ESCON = 0x49
+ IFT_ETHER = 0x6
+ IFT_FAST = 0x7d
+ IFT_FASTETHER = 0x3e
+ IFT_FASTETHERFX = 0x45
+ IFT_FDDI = 0xf
+ IFT_FIBRECHANNEL = 0x38
+ IFT_FRAMERELAYINTERCONNECT = 0x3a
+ IFT_FRAMERELAYMPI = 0x5c
+ IFT_FRDLCIENDPT = 0xc1
+ IFT_FRELAY = 0x20
+ IFT_FRELAYDCE = 0x2c
+ IFT_FRF16MFRBUNDLE = 0xa3
+ IFT_FRFORWARD = 0x9e
+ IFT_G703AT2MB = 0x43
+ IFT_G703AT64K = 0x42
+ IFT_GIF = 0xf0
+ IFT_GIGABITETHERNET = 0x75
+ IFT_GR303IDT = 0xb2
+ IFT_GR303RDT = 0xb1
+ IFT_H323GATEKEEPER = 0xa4
+ IFT_H323PROXY = 0xa5
+ IFT_HDH1822 = 0x3
+ IFT_HDLC = 0x76
+ IFT_HDSL2 = 0xa8
+ IFT_HIPERLAN2 = 0xb7
+ IFT_HIPPI = 0x2f
+ IFT_HIPPIINTERFACE = 0x39
+ IFT_HOSTPAD = 0x5a
+ IFT_HSSI = 0x2e
+ IFT_HY = 0xe
+ IFT_IBM370PARCHAN = 0x48
+ IFT_IDSL = 0x9a
+ IFT_IEEE80211 = 0x47
+ IFT_IEEE80212 = 0x37
+ IFT_IEEE8023ADLAG = 0xa1
+ IFT_IFGSN = 0x91
+ IFT_IMT = 0xbe
+ IFT_INTERLEAVE = 0x7c
+ IFT_IP = 0x7e
+ IFT_IPFORWARD = 0x8e
+ IFT_IPOVERATM = 0x72
+ IFT_IPOVERCDLC = 0x6d
+ IFT_IPOVERCLAW = 0x6e
+ IFT_IPSWITCH = 0x4e
+ IFT_ISDN = 0x3f
+ IFT_ISDNBASIC = 0x14
+ IFT_ISDNPRIMARY = 0x15
+ IFT_ISDNS = 0x4b
+ IFT_ISDNU = 0x4c
+ IFT_ISO88022LLC = 0x29
+ IFT_ISO88023 = 0x7
+ IFT_ISO88024 = 0x8
+ IFT_ISO88025 = 0x9
+ IFT_ISO88025CRFPINT = 0x62
+ IFT_ISO88025DTR = 0x56
+ IFT_ISO88025FIBER = 0x73
+ IFT_ISO88026 = 0xa
+ IFT_ISUP = 0xb3
+ IFT_L3IPXVLAN = 0x89
+ IFT_LAPB = 0x10
+ IFT_LAPD = 0x4d
+ IFT_LAPF = 0x77
+ IFT_LOCALTALK = 0x2a
+ IFT_LOOP = 0x18
+ IFT_MEDIAMAILOVERIP = 0x8b
+ IFT_MFSIGLINK = 0xa7
+ IFT_MIOX25 = 0x26
+ IFT_MODEM = 0x30
+ IFT_MPC = 0x71
+ IFT_MPLS = 0xa6
+ IFT_MPLSTUNNEL = 0x96
+ IFT_MSDSL = 0x8f
+ IFT_MVL = 0xbf
+ IFT_MYRINET = 0x63
+ IFT_NFAS = 0xaf
+ IFT_NSIP = 0x1b
+ IFT_OPTICALCHANNEL = 0xc3
+ IFT_OPTICALTRANSPORT = 0xc4
+ IFT_OTHER = 0x1
+ IFT_P10 = 0xc
+ IFT_P80 = 0xd
+ IFT_PARA = 0x22
+ IFT_PFLOG = 0xf6
+ IFT_PFSYNC = 0xf7
+ IFT_PLC = 0xae
+ IFT_POS = 0xab
+ IFT_PPPMULTILINKBUNDLE = 0x6c
+ IFT_PROPBWAP2MP = 0xb8
+ IFT_PROPCNLS = 0x59
+ IFT_PROPDOCSWIRELESSDOWNSTREAM = 0xb5
+ IFT_PROPDOCSWIRELESSMACLAYER = 0xb4
+ IFT_PROPDOCSWIRELESSUPSTREAM = 0xb6
+ IFT_PROPMUX = 0x36
+ IFT_PROPWIRELESSP2P = 0x9d
+ IFT_PTPSERIAL = 0x16
+ IFT_PVC = 0xf1
+ IFT_QLLC = 0x44
+ IFT_RADIOMAC = 0xbc
+ IFT_RADSL = 0x5f
+ IFT_REACHDSL = 0xc0
+ IFT_RFC1483 = 0x9f
+ IFT_RS232 = 0x21
+ IFT_RSRB = 0x4f
+ IFT_SDLC = 0x11
+ IFT_SDSL = 0x60
+ IFT_SHDSL = 0xa9
+ IFT_SIP = 0x1f
+ IFT_SLIP = 0x1c
+ IFT_SMDSDXI = 0x2b
+ IFT_SMDSICIP = 0x34
+ IFT_SONET = 0x27
+ IFT_SONETOVERHEADCHANNEL = 0xb9
+ IFT_SONETPATH = 0x32
+ IFT_SONETVT = 0x33
+ IFT_SRP = 0x97
+ IFT_SS7SIGLINK = 0x9c
+ IFT_STACKTOSTACK = 0x6f
+ IFT_STARLAN = 0xb
+ IFT_STF = 0xd7
+ IFT_T1 = 0x12
+ IFT_TDLC = 0x74
+ IFT_TERMPAD = 0x5b
+ IFT_TR008 = 0xb0
+ IFT_TRANSPHDLC = 0x7b
+ IFT_TUNNEL = 0x83
+ IFT_ULTRA = 0x1d
+ IFT_USB = 0xa0
+ IFT_V11 = 0x40
+ IFT_V35 = 0x2d
+ IFT_V36 = 0x41
+ IFT_V37 = 0x78
+ IFT_VDSL = 0x61
+ IFT_VIRTUALIPADDRESS = 0x70
+ IFT_VOICEEM = 0x64
+ IFT_VOICEENCAP = 0x67
+ IFT_VOICEFXO = 0x65
+ IFT_VOICEFXS = 0x66
+ IFT_VOICEOVERATM = 0x98
+ IFT_VOICEOVERFRAMERELAY = 0x99
+ IFT_VOICEOVERIP = 0x68
+ IFT_X213 = 0x5d
+ IFT_X25 = 0x5
+ IFT_X25DDN = 0x4
+ IFT_X25HUNTGROUP = 0x7a
+ IFT_X25MLP = 0x79
+ IFT_X25PLE = 0x28
+ IFT_XETHER = 0x1a
+
+ // missing constants on FreeBSD-11.1-RELEASE, copied from old values in ztypes_freebsd_arm.go
+ IFF_SMART = 0x20
+ IFT_FAITH = 0xf2
+ IFT_IPXIP = 0xf9
+ IPPROTO_MAXID = 0x34
+ IPV6_FAITH = 0x1d
+ IP_FAITH = 0x16
+ MAP_NORESERVE = 0x40
+ MAP_RENAME = 0x20
+ NET_RT_MAXID = 0x6
+ RTF_PRCLONING = 0x10000
+ RTM_OLDADD = 0x9
+ RTM_OLDDEL = 0xa
+ SIOCADDRT = 0x8030720a
+ SIOCALIFADDR = 0x8118691b
+ SIOCDELRT = 0x8030720b
+ SIOCDLIFADDR = 0x8118691d
+ SIOCGLIFADDR = 0xc118691c
+ SIOCGLIFPHYADDR = 0xc118694b
+ SIOCSLIFPHYADDR = 0x8118694a
+)
diff --git a/vendor/golang.org/x/sys/unix/fcntl.go b/vendor/golang.org/x/sys/unix/fcntl.go
new file mode 100644
index 0000000..39c03f1
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/fcntl.go
@@ -0,0 +1,32 @@
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build dragonfly freebsd linux netbsd openbsd
+
+package unix
+
+import "unsafe"
+
+// fcntl64Syscall is usually SYS_FCNTL, but is overridden on 32-bit Linux
+// systems by flock_linux_32bit.go to be SYS_FCNTL64.
+var fcntl64Syscall uintptr = SYS_FCNTL
+
+// FcntlInt performs a fcntl syscall on fd with the provided command and argument.
+func FcntlInt(fd uintptr, cmd, arg int) (int, error) {
+ valptr, _, errno := Syscall(fcntl64Syscall, fd, uintptr(cmd), uintptr(arg))
+ var err error
+ if errno != 0 {
+ err = errno
+ }
+ return int(valptr), err
+}
+
+// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
+func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
+ _, _, errno := Syscall(fcntl64Syscall, fd, uintptr(cmd), uintptr(unsafe.Pointer(lk)))
+ if errno == 0 {
+ return nil
+ }
+ return errno
+}
diff --git a/vendor/golang.org/x/sys/unix/fcntl_darwin.go b/vendor/golang.org/x/sys/unix/fcntl_darwin.go
new file mode 100644
index 0000000..5868a4a
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/fcntl_darwin.go
@@ -0,0 +1,18 @@
+// Copyright 2019 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package unix
+
+import "unsafe"
+
+// FcntlInt performs a fcntl syscall on fd with the provided command and argument.
+func FcntlInt(fd uintptr, cmd, arg int) (int, error) {
+ return fcntl(int(fd), cmd, arg)
+}
+
+// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
+func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
+ _, err := fcntl(int(fd), cmd, int(uintptr(unsafe.Pointer(lk))))
+ return err
+}
diff --git a/vendor/golang.org/x/sys/unix/fcntl_linux_32bit.go b/vendor/golang.org/x/sys/unix/fcntl_linux_32bit.go
new file mode 100644
index 0000000..fc0e50e
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/fcntl_linux_32bit.go
@@ -0,0 +1,13 @@
+// +build linux,386 linux,arm linux,mips linux,mipsle
+
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package unix
+
+func init() {
+ // On 32-bit Linux systems, the fcntl syscall that matches Go's
+ // Flock_t type is SYS_FCNTL64, not SYS_FCNTL.
+ fcntl64Syscall = SYS_FCNTL64
+}
diff --git a/vendor/golang.org/x/sys/unix/gccgo.go b/vendor/golang.org/x/sys/unix/gccgo.go
new file mode 100644
index 0000000..cd6f5a6
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/gccgo.go
@@ -0,0 +1,62 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build gccgo
+// +build !aix
+
+package unix
+
+import "syscall"
+
+// We can't use the gc-syntax .s files for gccgo. On the plus side
+// much of the functionality can be written directly in Go.
+
+//extern gccgoRealSyscallNoError
+func realSyscallNoError(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r uintptr)
+
+//extern gccgoRealSyscall
+func realSyscall(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r, errno uintptr)
+
+func SyscallNoError(trap, a1, a2, a3 uintptr) (r1, r2 uintptr) {
+ syscall.Entersyscall()
+ r := realSyscallNoError(trap, a1, a2, a3, 0, 0, 0, 0, 0, 0)
+ syscall.Exitsyscall()
+ return r, 0
+}
+
+func Syscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno) {
+ syscall.Entersyscall()
+ r, errno := realSyscall(trap, a1, a2, a3, 0, 0, 0, 0, 0, 0)
+ syscall.Exitsyscall()
+ return r, 0, syscall.Errno(errno)
+}
+
+func Syscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno) {
+ syscall.Entersyscall()
+ r, errno := realSyscall(trap, a1, a2, a3, a4, a5, a6, 0, 0, 0)
+ syscall.Exitsyscall()
+ return r, 0, syscall.Errno(errno)
+}
+
+func Syscall9(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err syscall.Errno) {
+ syscall.Entersyscall()
+ r, errno := realSyscall(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9)
+ syscall.Exitsyscall()
+ return r, 0, syscall.Errno(errno)
+}
+
+func RawSyscallNoError(trap, a1, a2, a3 uintptr) (r1, r2 uintptr) {
+ r := realSyscallNoError(trap, a1, a2, a3, 0, 0, 0, 0, 0, 0)
+ return r, 0
+}
+
+func RawSyscall(trap, a1, a2, a3 uintptr) (r1, r2 uintptr, err syscall.Errno) {
+ r, errno := realSyscall(trap, a1, a2, a3, 0, 0, 0, 0, 0, 0)
+ return r, 0, syscall.Errno(errno)
+}
+
+func RawSyscall6(trap, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno) {
+ r, errno := realSyscall(trap, a1, a2, a3, a4, a5, a6, 0, 0, 0)
+ return r, 0, syscall.Errno(errno)
+}
diff --git a/vendor/golang.org/x/sys/unix/gccgo_c.c b/vendor/golang.org/x/sys/unix/gccgo_c.c
new file mode 100644
index 0000000..c44730c
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/gccgo_c.c
@@ -0,0 +1,39 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build gccgo
+// +build !aix
+
+#include
+#include
+#include
+
+#define _STRINGIFY2_(x) #x
+#define _STRINGIFY_(x) _STRINGIFY2_(x)
+#define GOSYM_PREFIX _STRINGIFY_(__USER_LABEL_PREFIX__)
+
+// Call syscall from C code because the gccgo support for calling from
+// Go to C does not support varargs functions.
+
+struct ret {
+ uintptr_t r;
+ uintptr_t err;
+};
+
+struct ret
+gccgoRealSyscall(uintptr_t trap, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5, uintptr_t a6, uintptr_t a7, uintptr_t a8, uintptr_t a9)
+{
+ struct ret r;
+
+ errno = 0;
+ r.r = syscall(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9);
+ r.err = errno;
+ return r;
+}
+
+uintptr_t
+gccgoRealSyscallNoError(uintptr_t trap, uintptr_t a1, uintptr_t a2, uintptr_t a3, uintptr_t a4, uintptr_t a5, uintptr_t a6, uintptr_t a7, uintptr_t a8, uintptr_t a9)
+{
+ return syscall(trap, a1, a2, a3, a4, a5, a6, a7, a8, a9);
+}
diff --git a/vendor/golang.org/x/sys/unix/gccgo_linux_amd64.go b/vendor/golang.org/x/sys/unix/gccgo_linux_amd64.go
new file mode 100644
index 0000000..251a977
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/gccgo_linux_amd64.go
@@ -0,0 +1,20 @@
+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build gccgo,linux,amd64
+
+package unix
+
+import "syscall"
+
+//extern gettimeofday
+func realGettimeofday(*Timeval, *byte) int32
+
+func gettimeofday(tv *Timeval) (err syscall.Errno) {
+ r := realGettimeofday(tv, nil)
+ if r < 0 {
+ return syscall.GetErrno()
+ }
+ return 0
+}
diff --git a/vendor/golang.org/x/sys/unix/ioctl.go b/vendor/golang.org/x/sys/unix/ioctl.go
new file mode 100644
index 0000000..3559e5d
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/ioctl.go
@@ -0,0 +1,65 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
+
+package unix
+
+import (
+ "runtime"
+ "unsafe"
+)
+
+// ioctl itself should not be exposed directly, but additional get/set
+// functions for specific types are permissible.
+
+// IoctlSetInt performs an ioctl operation which sets an integer value
+// on fd, using the specified request number.
+func IoctlSetInt(fd int, req uint, value int) error {
+ return ioctl(fd, req, uintptr(value))
+}
+
+// IoctlSetWinsize performs an ioctl on fd with a *Winsize argument.
+//
+// To change fd's window size, the req argument should be TIOCSWINSZ.
+func IoctlSetWinsize(fd int, req uint, value *Winsize) error {
+ // TODO: if we get the chance, remove the req parameter and
+ // hardcode TIOCSWINSZ.
+ err := ioctl(fd, req, uintptr(unsafe.Pointer(value)))
+ runtime.KeepAlive(value)
+ return err
+}
+
+// IoctlSetTermios performs an ioctl on fd with a *Termios.
+//
+// The req value will usually be TCSETA or TIOCSETA.
+func IoctlSetTermios(fd int, req uint, value *Termios) error {
+ // TODO: if we get the chance, remove the req parameter.
+ err := ioctl(fd, req, uintptr(unsafe.Pointer(value)))
+ runtime.KeepAlive(value)
+ return err
+}
+
+// IoctlGetInt performs an ioctl operation which gets an integer value
+// from fd, using the specified request number.
+//
+// A few ioctl requests use the return value as an output parameter;
+// for those, IoctlRetInt should be used instead of this function.
+func IoctlGetInt(fd int, req uint) (int, error) {
+ var value int
+ err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
+ return value, err
+}
+
+func IoctlGetWinsize(fd int, req uint) (*Winsize, error) {
+ var value Winsize
+ err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
+ return &value, err
+}
+
+func IoctlGetTermios(fd int, req uint) (*Termios, error) {
+ var value Termios
+ err := ioctl(fd, req, uintptr(unsafe.Pointer(&value)))
+ return &value, err
+}
diff --git a/vendor/golang.org/x/sys/unix/mkall.sh b/vendor/golang.org/x/sys/unix/mkall.sh
new file mode 100644
index 0000000..5a22eca
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/mkall.sh
@@ -0,0 +1,227 @@
+#!/usr/bin/env bash
+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+# This script runs or (given -n) prints suggested commands to generate files for
+# the Architecture/OS specified by the GOARCH and GOOS environment variables.
+# See README.md for more information about how the build system works.
+
+GOOSARCH="${GOOS}_${GOARCH}"
+
+# defaults
+mksyscall="go run mksyscall.go"
+mkerrors="./mkerrors.sh"
+zerrors="zerrors_$GOOSARCH.go"
+mksysctl=""
+zsysctl="zsysctl_$GOOSARCH.go"
+mksysnum=
+mktypes=
+mkasm=
+run="sh"
+cmd=""
+
+case "$1" in
+-syscalls)
+ for i in zsyscall*go
+ do
+ # Run the command line that appears in the first line
+ # of the generated file to regenerate it.
+ sed 1q $i | sed 's;^// ;;' | sh > _$i && gofmt < _$i > $i
+ rm _$i
+ done
+ exit 0
+ ;;
+-n)
+ run="cat"
+ cmd="echo"
+ shift
+esac
+
+case "$#" in
+0)
+ ;;
+*)
+ echo 'usage: mkall.sh [-n]' 1>&2
+ exit 2
+esac
+
+if [[ "$GOOS" = "linux" ]]; then
+ # Use the Docker-based build system
+ # Files generated through docker (use $cmd so you can Ctl-C the build or run)
+ $cmd docker build --tag generate:$GOOS $GOOS
+ $cmd docker run --interactive --tty --volume $(dirname "$(readlink -f "$0")"):/build generate:$GOOS
+ exit
+fi
+
+GOOSARCH_in=syscall_$GOOSARCH.go
+case "$GOOSARCH" in
+_* | *_ | _)
+ echo 'undefined $GOOS_$GOARCH:' "$GOOSARCH" 1>&2
+ exit 1
+ ;;
+aix_ppc)
+ mkerrors="$mkerrors -maix32"
+ mksyscall="go run mksyscall_aix_ppc.go -aix"
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ ;;
+aix_ppc64)
+ mkerrors="$mkerrors -maix64"
+ mksyscall="go run mksyscall_aix_ppc64.go -aix"
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ ;;
+darwin_386)
+ mkerrors="$mkerrors -m32"
+ mksyscall="go run mksyscall.go -l32"
+ mksysnum="go run mksysnum.go $(xcrun --show-sdk-path --sdk macosx)/usr/include/sys/syscall.h"
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ mkasm="go run mkasm_darwin.go"
+ ;;
+darwin_amd64)
+ mkerrors="$mkerrors -m64"
+ mksysnum="go run mksysnum.go $(xcrun --show-sdk-path --sdk macosx)/usr/include/sys/syscall.h"
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ mkasm="go run mkasm_darwin.go"
+ ;;
+darwin_arm)
+ mkerrors="$mkerrors"
+ mksyscall="go run mksyscall.go -l32"
+ mksysnum="go run mksysnum.go $(xcrun --show-sdk-path --sdk iphoneos)/usr/include/sys/syscall.h"
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ mkasm="go run mkasm_darwin.go"
+ ;;
+darwin_arm64)
+ mkerrors="$mkerrors -m64"
+ mksysnum="go run mksysnum.go $(xcrun --show-sdk-path --sdk iphoneos)/usr/include/sys/syscall.h"
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ mkasm="go run mkasm_darwin.go"
+ ;;
+dragonfly_amd64)
+ mkerrors="$mkerrors -m64"
+ mksyscall="go run mksyscall.go -dragonfly"
+ mksysnum="go run mksysnum.go 'https://gitweb.dragonflybsd.org/dragonfly.git/blob_plain/HEAD:/sys/kern/syscalls.master'"
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ ;;
+freebsd_386)
+ mkerrors="$mkerrors -m32"
+ mksyscall="go run mksyscall.go -l32"
+ mksysnum="go run mksysnum.go 'https://svn.freebsd.org/base/stable/11/sys/kern/syscalls.master'"
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ ;;
+freebsd_amd64)
+ mkerrors="$mkerrors -m64"
+ mksysnum="go run mksysnum.go 'https://svn.freebsd.org/base/stable/11/sys/kern/syscalls.master'"
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ ;;
+freebsd_arm)
+ mkerrors="$mkerrors"
+ mksyscall="go run mksyscall.go -l32 -arm"
+ mksysnum="go run mksysnum.go 'https://svn.freebsd.org/base/stable/11/sys/kern/syscalls.master'"
+ # Let the type of C char be signed for making the bare syscall
+ # API consistent across platforms.
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"
+ ;;
+freebsd_arm64)
+ mkerrors="$mkerrors -m64"
+ mksysnum="go run mksysnum.go 'https://svn.freebsd.org/base/stable/11/sys/kern/syscalls.master'"
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ ;;
+netbsd_386)
+ mkerrors="$mkerrors -m32"
+ mksyscall="go run mksyscall.go -l32 -netbsd"
+ mksysnum="go run mksysnum.go 'http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/kern/syscalls.master'"
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ ;;
+netbsd_amd64)
+ mkerrors="$mkerrors -m64"
+ mksyscall="go run mksyscall.go -netbsd"
+ mksysnum="go run mksysnum.go 'http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/kern/syscalls.master'"
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ ;;
+netbsd_arm)
+ mkerrors="$mkerrors"
+ mksyscall="go run mksyscall.go -l32 -netbsd -arm"
+ mksysnum="go run mksysnum.go 'http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/kern/syscalls.master'"
+ # Let the type of C char be signed for making the bare syscall
+ # API consistent across platforms.
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"
+ ;;
+netbsd_arm64)
+ mkerrors="$mkerrors -m64"
+ mksyscall="go run mksyscall.go -netbsd"
+ mksysnum="go run mksysnum.go 'http://cvsweb.netbsd.org/bsdweb.cgi/~checkout~/src/sys/kern/syscalls.master'"
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ ;;
+openbsd_386)
+ mkerrors="$mkerrors -m32"
+ mksyscall="go run mksyscall.go -l32 -openbsd"
+ mksysctl="go run mksysctl_openbsd.go"
+ mksysnum="go run mksysnum.go 'https://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master'"
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ ;;
+openbsd_amd64)
+ mkerrors="$mkerrors -m64"
+ mksyscall="go run mksyscall.go -openbsd"
+ mksysctl="go run mksysctl_openbsd.go"
+ mksysnum="go run mksysnum.go 'https://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master'"
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ ;;
+openbsd_arm)
+ mkerrors="$mkerrors"
+ mksyscall="go run mksyscall.go -l32 -openbsd -arm"
+ mksysctl="go run mksysctl_openbsd.go"
+ mksysnum="go run mksysnum.go 'https://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master'"
+ # Let the type of C char be signed for making the bare syscall
+ # API consistent across platforms.
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"
+ ;;
+openbsd_arm64)
+ mkerrors="$mkerrors -m64"
+ mksyscall="go run mksyscall.go -openbsd"
+ mksysctl="go run mksysctl_openbsd.go"
+ mksysnum="go run mksysnum.go 'https://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/sys/kern/syscalls.master'"
+ # Let the type of C char be signed for making the bare syscall
+ # API consistent across platforms.
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs -- -fsigned-char"
+ ;;
+solaris_amd64)
+ mksyscall="go run mksyscall_solaris.go"
+ mkerrors="$mkerrors -m64"
+ mksysnum=
+ mktypes="GOARCH=$GOARCH go tool cgo -godefs"
+ ;;
+*)
+ echo 'unrecognized $GOOS_$GOARCH: ' "$GOOSARCH" 1>&2
+ exit 1
+ ;;
+esac
+
+(
+ if [ -n "$mkerrors" ]; then echo "$mkerrors |gofmt >$zerrors"; fi
+ case "$GOOS" in
+ *)
+ syscall_goos="syscall_$GOOS.go"
+ case "$GOOS" in
+ darwin | dragonfly | freebsd | netbsd | openbsd)
+ syscall_goos="syscall_bsd.go $syscall_goos"
+ ;;
+ esac
+ if [ -n "$mksyscall" ]; then
+ if [ "$GOOSARCH" == "aix_ppc64" ]; then
+ # aix/ppc64 script generates files instead of writing to stdin.
+ echo "$mksyscall -tags $GOOS,$GOARCH $syscall_goos $GOOSARCH_in && gofmt -w zsyscall_$GOOSARCH.go && gofmt -w zsyscall_"$GOOSARCH"_gccgo.go && gofmt -w zsyscall_"$GOOSARCH"_gc.go " ;
+ elif [ "$GOOS" == "darwin" ]; then
+ # pre-1.12, direct syscalls
+ echo "$mksyscall -tags $GOOS,$GOARCH,!go1.12 $syscall_goos $GOOSARCH_in |gofmt >zsyscall_$GOOSARCH.1_11.go";
+ # 1.12 and later, syscalls via libSystem
+ echo "$mksyscall -tags $GOOS,$GOARCH,go1.12 $syscall_goos $GOOSARCH_in |gofmt >zsyscall_$GOOSARCH.go";
+ else
+ echo "$mksyscall -tags $GOOS,$GOARCH $syscall_goos $GOOSARCH_in |gofmt >zsyscall_$GOOSARCH.go";
+ fi
+ fi
+ esac
+ if [ -n "$mksysctl" ]; then echo "$mksysctl |gofmt >$zsysctl"; fi
+ if [ -n "$mksysnum" ]; then echo "$mksysnum |gofmt >zsysnum_$GOOSARCH.go"; fi
+ if [ -n "$mktypes" ]; then echo "$mktypes types_$GOOS.go | go run mkpost.go > ztypes_$GOOSARCH.go"; fi
+ if [ -n "$mkasm" ]; then echo "$mkasm $GOARCH"; fi
+) | $run
diff --git a/vendor/golang.org/x/sys/unix/mkerrors.sh b/vendor/golang.org/x/sys/unix/mkerrors.sh
new file mode 100644
index 0000000..67b8482
--- /dev/null
+++ b/vendor/golang.org/x/sys/unix/mkerrors.sh
@@ -0,0 +1,684 @@
+#!/usr/bin/env bash
+# Copyright 2009 The Go Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file.
+
+# Generate Go code listing errors and other #defined constant
+# values (ENAMETOOLONG etc.), by asking the preprocessor
+# about the definitions.
+
+unset LANG
+export LC_ALL=C
+export LC_CTYPE=C
+
+if test -z "$GOARCH" -o -z "$GOOS"; then
+ echo 1>&2 "GOARCH or GOOS not defined in environment"
+ exit 1
+fi
+
+# Check that we are using the new build system if we should
+if [[ "$GOOS" = "linux" ]] && [[ "$GOLANG_SYS_BUILD" != "docker" ]]; then
+ echo 1>&2 "In the Docker based build system, mkerrors should not be called directly."
+ echo 1>&2 "See README.md"
+ exit 1
+fi
+
+if [[ "$GOOS" = "aix" ]]; then
+ CC=${CC:-gcc}
+else
+ CC=${CC:-cc}
+fi
+
+if [[ "$GOOS" = "solaris" ]]; then
+ # Assumes GNU versions of utilities in PATH.
+ export PATH=/usr/gnu/bin:$PATH
+fi
+
+uname=$(uname)
+
+includes_AIX='
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#define AF_LOCAL AF_UNIX
+'
+
+includes_Darwin='
+#define _DARWIN_C_SOURCE
+#define KERNEL
+#define _DARWIN_USE_64_BIT_INODE
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+'
+
+includes_DragonFly='
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+'
+
+includes_FreeBSD='
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+#if __FreeBSD__ >= 10
+#define IFT_CARP 0xf8 // IFT_CARP is deprecated in FreeBSD 10
+#undef SIOCAIFADDR
+#define SIOCAIFADDR _IOW(105, 26, struct oifaliasreq) // ifaliasreq contains if_data
+#undef SIOCSIFPHYADDR
+#define SIOCSIFPHYADDR _IOW(105, 70, struct oifaliasreq) // ifaliasreq contains if_data
+#endif
+'
+
+includes_Linux='
+#define _LARGEFILE_SOURCE
+#define _LARGEFILE64_SOURCE
+#ifndef __LP64__
+#define _FILE_OFFSET_BITS 64
+#endif
+#define _GNU_SOURCE
+
+// is broken on powerpc64, as it fails to include definitions of
+// these structures. We just include them copied from .
+#if defined(__powerpc__)
+struct sgttyb {
+ char sg_ispeed;
+ char sg_ospeed;
+ char sg_erase;
+ char sg_kill;
+ short sg_flags;
+};
+
+struct tchars {
+ char t_intrc;
+ char t_quitc;
+ char t_startc;
+ char t_stopc;
+ char t_eofc;
+ char t_brkc;
+};
+
+struct ltchars {
+ char t_suspc;
+ char t_dsuspc;
+ char t_rprntc;
+ char t_flushc;
+ char t_werasc;
+ char t_lnextc;
+};
+#endif
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include