1 files changed, 0 insertions, 297 deletions
diff --git a/src/pkg/net/lookup_plan9.go b/src/pkg/net/lookup_plan9.go
deleted file mode 100644
index b80ac10e0..000000000
--- a/src/pkg/net/lookup_plan9.go
+++ /dev/null
@@ -1,297 +0,0 @@
-// Copyright 2011 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 net
-
-import (
-	"errors"
-	"os"
-)
-
-func query(filename, query string, bufSize int) (res []string, err error) {
-	file, err := os.OpenFile(filename, os.O_RDWR, 0)
-	if err != nil {
-		return
-	}
-	defer file.Close()
-
-	_, err = file.Seek(0, 0)
-	if err != nil {
-		return
-	}
-	_, err = file.WriteString(query)
-	if err != nil {
-		return
-	}
-	_, err = file.Seek(0, 0)
-	if err != nil {
-		return
-	}
-	buf := make([]byte, bufSize)
-	for {
-		n, _ := file.Read(buf)
-		if n <= 0 {
-			break
-		}
-		res = append(res, string(buf[:n]))
-	}
-	return
-}
-
-func queryCS(net, host, service string) (res []string, err error) {
-	switch net {
-	case "tcp4", "tcp6":
-		net = "tcp"
-	case "udp4", "udp6":
-		net = "udp"
-	}
-	if host == "" {
-		host = "*"
-	}
-	return query(netdir+"/cs", net+"!"+host+"!"+service, 128)
-}
-
-func queryCS1(net string, ip IP, port int) (clone, dest string, err error) {
-	ips := "*"
-	if len(ip) != 0 && !ip.IsUnspecified() {
-		ips = ip.String()
-	}
-	lines, err := queryCS(net, ips, itoa(port))
-	if err != nil {
-		return
-	}
-	f := getFields(lines[0])
-	if len(f) < 2 {
-		return "", "", errors.New("bad response from ndb/cs")
-	}
-	clone, dest = f[0], f[1]
-	return
-}
-
-func queryDNS(addr string, typ string) (res []string, err error) {
-	return query(netdir+"/dns", addr+" "+typ, 1024)
-}
-
-// toLower returns a lower-case version of in. Restricting us to
-// ASCII is sufficient to handle the IP protocol names and allow
-// us to not depend on the strings and unicode packages.
-func toLower(in string) string {
-	for _, c := range in {
-		if 'A' <= c && c <= 'Z' {
-			// Has upper case; need to fix.
-			out := []byte(in)
-			for i := 0; i < len(in); i++ {
-				c := in[i]
-				if 'A' <= c && c <= 'Z' {
-					c += 'a' - 'A'
-				}
-				out[i] = c
-			}
-			return string(out)
-		}
-	}
-	return in
-}
-
-// lookupProtocol looks up IP protocol name and returns
-// the corresponding protocol number.
-func lookupProtocol(name string) (proto int, err error) {
-	lines, err := query(netdir+"/cs", "!protocol="+toLower(name), 128)
-	if err != nil {
-		return 0, err
-	}
-	unknownProtoError := errors.New("unknown IP protocol specified: " + name)
-	if len(lines) == 0 {
-		return 0, unknownProtoError
-	}
-	f := getFields(lines[0])
-	if len(f) < 2 {
-		return 0, unknownProtoError
-	}
-	s := f[1]
-	if n, _, ok := dtoi(s, byteIndex(s, '=')+1); ok {
-		return n, nil
-	}
-	return 0, unknownProtoError
-}
-
-func lookupHost(host string) (addrs []string, err error) {
-	// Use netdir/cs instead of netdir/dns because cs knows about
-	// host names in local network (e.g. from /lib/ndb/local)
-	lines, err := queryCS("net", host, "1")
-	if err != nil {
-		return
-	}
-loop:
-	for _, line := range lines {
-		f := getFields(line)
-		if len(f) < 2 {
-			continue
-		}
-		addr := f[1]
-		if i := byteIndex(addr, '!'); i >= 0 {
-			addr = addr[:i] // remove port
-		}
-		if ParseIP(addr) == nil {
-			continue
-		}
-		// only return unique addresses
-		for _, a := range addrs {
-			if a == addr {
-				continue loop
-			}
-		}
-		addrs = append(addrs, addr)
-	}
-	return
-}
-
-func lookupIP(host string) (ips []IP, err error) {
-	addrs, err := LookupHost(host)
-	if err != nil {
-		return
-	}
-	for _, addr := range addrs {
-		if ip := ParseIP(addr); ip != nil {
-			ips = append(ips, ip)
-		}
-	}
-	return
-}
-
-func lookupPort(network, service string) (port int, err error) {
-	switch network {
-	case "tcp4", "tcp6":
-		network = "tcp"
-	case "udp4", "udp6":
-		network = "udp"
-	}
-	lines, err := queryCS(network, "127.0.0.1", service)
-	if err != nil {
-		return
-	}
-	unknownPortError := &AddrError{"unknown port", network + "/" + service}
-	if len(lines) == 0 {
-		return 0, unknownPortError
-	}
-	f := getFields(lines[0])
-	if len(f) < 2 {
-		return 0, unknownPortError
-	}
-	s := f[1]
-	if i := byteIndex(s, '!'); i >= 0 {
-		s = s[i+1:] // remove address
-	}
-	if n, _, ok := dtoi(s, 0); ok {
-		return n, nil
-	}
-	return 0, unknownPortError
-}
-
-func lookupCNAME(name string) (cname string, err error) {
-	lines, err := queryDNS(name, "cname")
-	if err != nil {
-		return
-	}
-	if len(lines) > 0 {
-		if f := getFields(lines[0]); len(f) >= 3 {
-			return f[2] + ".", nil
-		}
-	}
-	return "", errors.New("bad response from ndb/dns")
-}
-
-func lookupSRV(service, proto, name string) (cname string, addrs []*SRV, err error) {
-	var target string
-	if service == "" && proto == "" {
-		target = name
-	} else {
-		target = "_" + service + "._" + proto + "." + name
-	}
-	lines, err := queryDNS(target, "srv")
-	if err != nil {
-		return
-	}
-	for _, line := range lines {
-		f := getFields(line)
-		if len(f) < 6 {
-			continue
-		}
-		port, _, portOk := dtoi(f[4], 0)
-		priority, _, priorityOk := dtoi(f[3], 0)
-		weight, _, weightOk := dtoi(f[2], 0)
-		if !(portOk && priorityOk && weightOk) {
-			continue
-		}
-		addrs = append(addrs, &SRV{f[5], uint16(port), uint16(priority), uint16(weight)})
-		cname = f[0]
-	}
-	byPriorityWeight(addrs).sort()
-	return
-}
-
-func lookupMX(name string) (mx []*MX, err error) {
-	lines, err := queryDNS(name, "mx")
-	if err != nil {
-		return
-	}
-	for _, line := range lines {
-		f := getFields(line)
-		if len(f) < 4 {
-			continue
-		}
-		if pref, _, ok := dtoi(f[2], 0); ok {
-			mx = append(mx, &MX{f[3], uint16(pref)})
-		}
-	}
-	byPref(mx).sort()
-	return
-}
-
-func lookupNS(name string) (ns []*NS, err error) {
-	lines, err := queryDNS(name, "ns")
-	if err != nil {
-		return
-	}
-	for _, line := range lines {
-		f := getFields(line)
-		if len(f) < 3 {
-			continue
-		}
-		ns = append(ns, &NS{f[2]})
-	}
-	return
-}
-
-func lookupTXT(name string) (txt []string, err error) {
-	lines, err := queryDNS(name, "txt")
-	if err != nil {
-		return
-	}
-	for _, line := range lines {
-		if i := byteIndex(line, '\t'); i >= 0 {
-			txt = append(txt, line[i+1:])
-		}
-	}
-	return
-}
-
-func lookupAddr(addr string) (name []string, err error) {
-	arpa, err := reverseaddr(addr)
-	if err != nil {
-		return
-	}
-	lines, err := queryDNS(arpa, "ptr")
-	if err != nil {
-		return
-	}
-	for _, line := range lines {
-		f := getFields(line)
-		if len(f) < 3 {
-			continue
-		}
-		name = append(name, f[2])
-	}
-	return
-}