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path: root/vendor/golang.org/x/net/ipv4/gen.go
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Diffstat (limited to 'vendor/golang.org/x/net/ipv4/gen.go')
-rw-r--r--vendor/golang.org/x/net/ipv4/gen.go199
1 files changed, 199 insertions, 0 deletions
diff --git a/vendor/golang.org/x/net/ipv4/gen.go b/vendor/golang.org/x/net/ipv4/gen.go
new file mode 100644
index 0000000..1bb1737
--- /dev/null
+++ b/vendor/golang.org/x/net/ipv4/gen.go
@@ -0,0 +1,199 @@
+// 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 ignore
+
+//go:generate go run gen.go
+
+// This program generates system adaptation constants and types,
+// internet protocol constants and tables by reading template files
+// and IANA protocol registries.
+package main
+
+import (
+ "bytes"
+ "encoding/xml"
+ "fmt"
+ "go/format"
+ "io"
+ "io/ioutil"
+ "net/http"
+ "os"
+ "os/exec"
+ "runtime"
+ "strconv"
+ "strings"
+)
+
+func main() {
+ if err := genzsys(); err != nil {
+ fmt.Fprintln(os.Stderr, err)
+ os.Exit(1)
+ }
+ if err := geniana(); err != nil {
+ fmt.Fprintln(os.Stderr, err)
+ os.Exit(1)
+ }
+}
+
+func genzsys() error {
+ defs := "defs_" + runtime.GOOS + ".go"
+ f, err := os.Open(defs)
+ if err != nil {
+ if os.IsNotExist(err) {
+ return nil
+ }
+ return err
+ }
+ f.Close()
+ cmd := exec.Command("go", "tool", "cgo", "-godefs", defs)
+ b, err := cmd.Output()
+ if err != nil {
+ return err
+ }
+ b, err = format.Source(b)
+ if err != nil {
+ return err
+ }
+ zsys := "zsys_" + runtime.GOOS + ".go"
+ switch runtime.GOOS {
+ case "freebsd", "linux":
+ zsys = "zsys_" + runtime.GOOS + "_" + runtime.GOARCH + ".go"
+ }
+ if err := ioutil.WriteFile(zsys, b, 0644); err != nil {
+ return err
+ }
+ return nil
+}
+
+var registries = []struct {
+ url string
+ parse func(io.Writer, io.Reader) error
+}{
+ {
+ "https://www.iana.org/assignments/icmp-parameters/icmp-parameters.xml",
+ parseICMPv4Parameters,
+ },
+}
+
+func geniana() error {
+ var bb bytes.Buffer
+ fmt.Fprintf(&bb, "// go generate gen.go\n")
+ fmt.Fprintf(&bb, "// Code generated by the command above; DO NOT EDIT.\n\n")
+ fmt.Fprintf(&bb, "package ipv4\n\n")
+ for _, r := range registries {
+ resp, err := http.Get(r.url)
+ if err != nil {
+ return err
+ }
+ defer resp.Body.Close()
+ if resp.StatusCode != http.StatusOK {
+ return fmt.Errorf("got HTTP status code %v for %v\n", resp.StatusCode, r.url)
+ }
+ if err := r.parse(&bb, resp.Body); err != nil {
+ return err
+ }
+ fmt.Fprintf(&bb, "\n")
+ }
+ b, err := format.Source(bb.Bytes())
+ if err != nil {
+ return err
+ }
+ if err := ioutil.WriteFile("iana.go", b, 0644); err != nil {
+ return err
+ }
+ return nil
+}
+
+func parseICMPv4Parameters(w io.Writer, r io.Reader) error {
+ dec := xml.NewDecoder(r)
+ var icp icmpv4Parameters
+ if err := dec.Decode(&icp); err != nil {
+ return err
+ }
+ prs := icp.escape()
+ fmt.Fprintf(w, "// %s, Updated: %s\n", icp.Title, icp.Updated)
+ fmt.Fprintf(w, "const (\n")
+ for _, pr := range prs {
+ if pr.Descr == "" {
+ continue
+ }
+ fmt.Fprintf(w, "ICMPType%s ICMPType = %d", pr.Descr, pr.Value)
+ fmt.Fprintf(w, "// %s\n", pr.OrigDescr)
+ }
+ fmt.Fprintf(w, ")\n\n")
+ fmt.Fprintf(w, "// %s, Updated: %s\n", icp.Title, icp.Updated)
+ fmt.Fprintf(w, "var icmpTypes = map[ICMPType]string{\n")
+ for _, pr := range prs {
+ if pr.Descr == "" {
+ continue
+ }
+ fmt.Fprintf(w, "%d: %q,\n", pr.Value, strings.ToLower(pr.OrigDescr))
+ }
+ fmt.Fprintf(w, "}\n")
+ return nil
+}
+
+type icmpv4Parameters struct {
+ XMLName xml.Name `xml:"registry"`
+ Title string `xml:"title"`
+ Updated string `xml:"updated"`
+ Registries []struct {
+ Title string `xml:"title"`
+ Records []struct {
+ Value string `xml:"value"`
+ Descr string `xml:"description"`
+ } `xml:"record"`
+ } `xml:"registry"`
+}
+
+type canonICMPv4ParamRecord struct {
+ OrigDescr string
+ Descr string
+ Value int
+}
+
+func (icp *icmpv4Parameters) escape() []canonICMPv4ParamRecord {
+ id := -1
+ for i, r := range icp.Registries {
+ if strings.Contains(r.Title, "Type") || strings.Contains(r.Title, "type") {
+ id = i
+ break
+ }
+ }
+ if id < 0 {
+ return nil
+ }
+ prs := make([]canonICMPv4ParamRecord, len(icp.Registries[id].Records))
+ sr := strings.NewReplacer(
+ "Messages", "",
+ "Message", "",
+ "ICMP", "",
+ "+", "P",
+ "-", "",
+ "/", "",
+ ".", "",
+ " ", "",
+ )
+ for i, pr := range icp.Registries[id].Records {
+ if strings.Contains(pr.Descr, "Reserved") ||
+ strings.Contains(pr.Descr, "Unassigned") ||
+ strings.Contains(pr.Descr, "Deprecated") ||
+ strings.Contains(pr.Descr, "Experiment") ||
+ strings.Contains(pr.Descr, "experiment") {
+ continue
+ }
+ ss := strings.Split(pr.Descr, "\n")
+ if len(ss) > 1 {
+ prs[i].Descr = strings.Join(ss, " ")
+ } else {
+ prs[i].Descr = ss[0]
+ }
+ s := strings.TrimSpace(prs[i].Descr)
+ prs[i].OrigDescr = s
+ prs[i].Descr = sr.Replace(s)
+ prs[i].Value, _ = strconv.Atoi(pr.Value)
+ }
+ return prs
+}