ff5f50c52c
Update to current version of Go library. Update testsuite for removed types. * go-lang.c (go_langhook_init): Omit float_type_size when calling go_create_gogo. * go-c.h: Update declaration of go_create_gogo. From-SVN: r169098
71 lines
1.5 KiB
Go
71 lines
1.5 KiB
Go
// 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.
|
|
|
|
// Read system port mappings from /etc/services
|
|
|
|
package net
|
|
|
|
import (
|
|
"os"
|
|
"sync"
|
|
)
|
|
|
|
var services map[string]map[string]int
|
|
var servicesError os.Error
|
|
var onceReadServices sync.Once
|
|
|
|
func readServices() {
|
|
services = make(map[string]map[string]int)
|
|
var file *file
|
|
if file, servicesError = open("/etc/services"); servicesError != nil {
|
|
return
|
|
}
|
|
for line, ok := file.readLine(); ok; line, ok = file.readLine() {
|
|
// "http 80/tcp www www-http # World Wide Web HTTP"
|
|
if i := byteIndex(line, '#'); i >= 0 {
|
|
line = line[0:i]
|
|
}
|
|
f := getFields(line)
|
|
if len(f) < 2 {
|
|
continue
|
|
}
|
|
portnet := f[1] // "tcp/80"
|
|
port, j, ok := dtoi(portnet, 0)
|
|
if !ok || port <= 0 || j >= len(portnet) || portnet[j] != '/' {
|
|
continue
|
|
}
|
|
netw := portnet[j+1:] // "tcp"
|
|
m, ok1 := services[netw]
|
|
if !ok1 {
|
|
m = make(map[string]int)
|
|
services[netw] = m
|
|
}
|
|
for i := 0; i < len(f); i++ {
|
|
if i != 1 { // f[1] was port/net
|
|
m[f[i]] = port
|
|
}
|
|
}
|
|
}
|
|
file.close()
|
|
}
|
|
|
|
// LookupPort looks up the port for the given network and service.
|
|
func LookupPort(network, service string) (port int, err os.Error) {
|
|
onceReadServices.Do(readServices)
|
|
|
|
switch network {
|
|
case "tcp4", "tcp6":
|
|
network = "tcp"
|
|
case "udp4", "udp6":
|
|
network = "udp"
|
|
}
|
|
|
|
if m, ok := services[network]; ok {
|
|
if port, ok = m[service]; ok {
|
|
return
|
|
}
|
|
}
|
|
return 0, &AddrError{"unknown port", network + "/" + service}
|
|
}
|