diff options
Diffstat (limited to 'src/pkg/net/dnsconfig_unix.go')
-rw-r--r-- | src/pkg/net/dnsconfig_unix.go | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/src/pkg/net/dnsconfig_unix.go b/src/pkg/net/dnsconfig_unix.go deleted file mode 100644 index db45716f1..000000000 --- a/src/pkg/net/dnsconfig_unix.go +++ /dev/null @@ -1,109 +0,0 @@ -// 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 darwin dragonfly freebsd linux nacl netbsd openbsd solaris - -// Read system DNS config from /etc/resolv.conf - -package net - -type dnsConfig struct { - servers []string // servers to use - search []string // suffixes to append to local name - 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 - rotate bool // round robin among servers -} - -// See resolv.conf(5) on a Linux machine. -// TODO(rsc): Supposed to call uname() and chop the beginning -// of the host name to get the default search domain. -func dnsReadConfig(filename string) (*dnsConfig, error) { - file, err := open(filename) - if err != nil { - return nil, &DNSConfigError{err} - } - conf := new(dnsConfig) - conf.servers = make([]string, 0, 3) // small, but the standard limit - conf.search = make([]string, 0) - conf.ndots = 1 - conf.timeout = 5 - conf.attempts = 2 - conf.rotate = false - for line, ok := file.readLine(); ok; line, ok = file.readLine() { - f := getFields(line) - if len(f) < 1 { - continue - } - switch f[0] { - case "nameserver": // add one name server - a := conf.servers - n := len(a) - if len(f) > 1 && n < cap(a) { - // One more check: make sure server name is - // just an IP address. Otherwise we need DNS - // to look it up. - name := f[1] - switch len(ParseIP(name)) { - case 16: - name = "[" + name + "]" - fallthrough - case 4: - a = a[0 : n+1] - a[n] = name - conf.servers = a - } - } - - case "domain": // set search path to just this domain - if len(f) > 1 { - conf.search = make([]string, 1) - conf.search[0] = f[1] - } else { - conf.search = make([]string, 0) - } - - case "search": // set search path to given servers - conf.search = make([]string, len(f)-1) - for i := 0; i < len(conf.search); i++ { - conf.search[i] = f[i+1] - } - - case "options": // magic options - for i := 1; i < len(f); i++ { - s := f[i] - switch { - case hasPrefix(s, "ndots:"): - n, _, _ := dtoi(s, 6) - if n < 1 { - n = 1 - } - conf.ndots = n - case hasPrefix(s, "timeout:"): - n, _, _ := dtoi(s, 8) - if n < 1 { - n = 1 - } - conf.timeout = n - case hasPrefix(s, "attempts:"): - n, _, _ := dtoi(s, 9) - if n < 1 { - n = 1 - } - conf.attempts = n - case s == "rotate": - conf.rotate = true - } - } - } - } - file.close() - - return conf, nil -} - -func hasPrefix(s, prefix string) bool { - return len(s) >= len(prefix) && s[:len(prefix)] == prefix -} |