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// 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.
// Low-level socket interface.
// Only for implementing net package.
// DO NOT USE DIRECTLY.
package socket
import (
"os";
"ip";
"syscall"
)
export const (
SOCKET = 41;
CONNECT = 42;
ACCEPT = 43;
SETSOCKOPT = 54;
GETSOCKOPT = 55;
BIND = 49;
LISTEN = 50;
AF_UNIX = 1;
AF_INET = 2;
AF_INET6 = 10;
SOCK_STREAM = 1;
SOCK_DGRAM = 2;
SOCK_RAW = 3;
SOCK_RDM = 4;
SOCK_SEQPACKET = 5;
SOL_SOCKET = 1;
SO_DEBUG = 1;
SO_REUSEADDR = 2;
SO_TYPE = 3;
SO_ERROR = 4;
SO_DONTROUTE = 5;
SO_BROADCAST = 6;
SO_SNDBUF = 7;
SO_RCVBUF = 8;
SO_SNDBUFFORCE = 32;
SO_RCVBUFFORCE = 33;
SO_KEEPALIVE = 9;
SO_OOBINLINE = 10;
SO_NO_CHECK = 11;
SO_PRIORITY = 12;
SO_LINGER = 13;
SO_BSDCOMPAT = 14;
SO_PASSCRED = 16;
SO_PEERCRED = 17;
SO_RCVLOWAT = 18;
SO_SNDLOWAT = 19;
SO_RCVTIMEO = 20;
SO_SNDTIMEO = 21;
SO_BINDTODEVICE = 25;
IPPROTO_TCP = 6;
IPPROTO_UDP = 17;
TCP_NODELAY = 0x01;
)
export type SockaddrUnix struct {
family uint16;
path [108]byte
}
export const SizeofSockaddrUnix = 110
export type SockaddrInet4 struct {
family uint16;
port [2]byte;
addr [4]byte;
zero [8]byte
}
export const SizeofSockaddrInet4 = 16
export type SockaddrInet6 struct {
family uint16;
port [2]byte;
flowinfo [4]byte;
addr [16]byte;
scopeid [4]byte;
}
export const SizeofSockaddrInet6 = 28
export type Sockaddr struct {
family uint16;
opaque [126]byte
}
export const SizeofSockaddr = 128
export type Timeval struct {
sec int32;
usec int32;
}
export type Linger struct {
yes int32;
sec int32;
}
func (s *Sockaddr) Len() int64 {
switch s.family {
case AF_UNIX:
return SizeofSockaddrUnix
case AF_INET:
return SizeofSockaddrInet4
case AF_INET6:
return SizeofSockaddrInet6
}
return 0
}
func SockaddrToSockaddrInet4(s *Sockaddr) *SockaddrInet4;
func SockaddrToSockaddrInet6(s *Sockaddr) *SockaddrInet6;
func SockaddrInet4ToSockaddr(s *SockaddrInet4) *Sockaddr;
func SockaddrInet6ToSockaddr(s *SockaddrInet6) *Sockaddr;
func SockaddrPtr(s *Sockaddr) int64;
func Int32Ptr(ip *int32) int64;
func TimevalPtr(tv *Timeval) int64;
func LingerPtr(l *Linger) int64;
export func socket(domain, proto, typ int64) (ret int64, err *os.Error) {
r1, r2, e := syscall.Syscall(SOCKET, domain, proto, typ);
return r1, os.ErrnoToError(e)
}
export func connect(fd int64, sa *Sockaddr) (ret int64, err *os.Error) {
r1, r2, e := syscall.Syscall(CONNECT, fd, SockaddrPtr(sa), sa.Len());
return r1, os.ErrnoToError(e)
}
export func bind(fd int64, sa *Sockaddr) (ret int64, err *os.Error) {
r1, r2, e := syscall.Syscall(BIND, fd, SockaddrPtr(sa), sa.Len());
return r1, os.ErrnoToError(e)
}
export func listen(fd, n int64) (ret int64, err *os.Error) {
r1, r2, e := syscall.Syscall(LISTEN, fd, n, 0);
return r1, os.ErrnoToError(e)
}
export func accept(fd int64, sa *Sockaddr) (ret int64, err *os.Error) {
n := int32(sa.Len());
r1, r2, e := syscall.Syscall(ACCEPT, fd, SockaddrPtr(sa), Int32Ptr(&n));
return r1, os.ErrnoToError(e)
}
export func setsockopt(fd, level, opt, valueptr, length int64) (ret int64, err *os.Error) {
if fd < 0 {
return -1, os.EINVAL
}
r1, r2, e := syscall.Syscall6(SETSOCKOPT, fd, level, opt, valueptr, length, 0);
return r1, os.ErrnoToError(e)
}
export func setsockopt_int(fd, level, opt int64, value int) *os.Error {
n := int32(opt);
r1, e := setsockopt(fd, level, opt, Int32Ptr(&n), 4)
return e
}
export func setsockopt_tv(fd, level, opt, nsec int64) *os.Error {
var tv Timeval;
nsec += 999;
tv.sec = int32(nsec/1000000000);
tv.usec = int32(nsec%1000000000);
r1, e := setsockopt(fd, level, opt, TimevalPtr(&tv), 4)
return e
}
export func setsockopt_linger(fd, level, opt int64, sec int) *os.Error {
var l Linger;
if sec != 0 {
l.yes = 1;
l.sec = sec
} else {
l.yes = 0;
l.sec = 0
}
r1, err := setsockopt(fd, level, opt, LingerPtr(&l), 8)
return err
}
/*
export func getsockopt(fd, level, opt, valueptr, lenptr int64) (ret int64, errno int64) {
r1, r2, err := syscall.Syscall6(GETSOCKOPT, fd, level, opt, valueptr, lenptr, 0);
return r1, err;
}
*/
export func IPv4ToSockaddr(p *[]byte, port int) (sa1 *Sockaddr, err *os.Error) {
p = ip.ToIPv4(p)
if p == nil || port < 0 || port > 0xFFFF {
return nil, os.EINVAL
}
sa := new(SockaddrInet4);
sa.family = AF_INET;
sa.port[0] = byte(port>>8);
sa.port[1] = byte(port);
for i := 0; i < ip.IPv4len; i++ {
sa.addr[i] = p[i]
}
return SockaddrInet4ToSockaddr(sa), nil
}
export func IPv6ToSockaddr(p *[]byte, port int) (sa1 *Sockaddr, err *os.Error) {
p = ip.ToIPv6(p)
if p == nil || port < 0 || port > 0xFFFF {
return nil, os.EINVAL
}
sa := new(SockaddrInet6);
sa.family = AF_INET6;
sa.port[0] = byte(port>>8);
sa.port[1] = byte(port);
for i := 0; i < ip.IPv6len; i++ {
sa.addr[i] = p[i]
}
return SockaddrInet6ToSockaddr(sa), nil
}
export func SockaddrToIP(sa1 *Sockaddr) (p *[]byte, port int, err *os.Error) {
switch sa1.family {
case AF_INET:
sa := SockaddrToSockaddrInet4(sa1);
a := ip.ToIPv6(&sa.addr)
if a == nil {
return nil, 0, os.EINVAL
}
return a, int(sa.port[0])<<8 + int(sa.port[1]), nil
case AF_INET6:
sa := SockaddrToSockaddrInet6(sa1);
a := ip.ToIPv6(&sa.addr)
if a == nil {
return nil, 0, os.EINVAL
}
return a, int(sa.port[0])<<8 + int(sa.port[1]), nil
default:
return nil, 0, os.EINVAL
}
return nil, 0, nil // not reached
}
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