2022-11-11 12:56:08 +00:00
|
|
|
package sing_shadowsocks
|
|
|
|
|
|
|
|
import (
|
|
|
|
"context"
|
|
|
|
"fmt"
|
|
|
|
"net"
|
|
|
|
"strings"
|
|
|
|
|
|
|
|
"github.com/Dreamacro/clash/adapter/inbound"
|
|
|
|
"github.com/Dreamacro/clash/common/sockopt"
|
|
|
|
C "github.com/Dreamacro/clash/constant"
|
2022-12-05 02:12:53 +00:00
|
|
|
LC "github.com/Dreamacro/clash/listener/config"
|
2022-11-11 14:44:44 +00:00
|
|
|
embedSS "github.com/Dreamacro/clash/listener/shadowsocks"
|
2022-11-11 12:56:08 +00:00
|
|
|
"github.com/Dreamacro/clash/listener/sing"
|
|
|
|
"github.com/Dreamacro/clash/log"
|
|
|
|
|
2022-12-05 03:03:28 +00:00
|
|
|
shadowsocks "github.com/metacubex/sing-shadowsocks"
|
|
|
|
"github.com/metacubex/sing-shadowsocks/shadowaead"
|
|
|
|
"github.com/metacubex/sing-shadowsocks/shadowaead_2022"
|
2022-11-11 12:56:08 +00:00
|
|
|
"github.com/sagernet/sing/common"
|
|
|
|
"github.com/sagernet/sing/common/buf"
|
|
|
|
"github.com/sagernet/sing/common/bufio"
|
|
|
|
"github.com/sagernet/sing/common/metadata"
|
|
|
|
)
|
|
|
|
|
|
|
|
type Listener struct {
|
|
|
|
closed bool
|
2022-12-05 02:12:53 +00:00
|
|
|
config LC.ShadowsocksServer
|
2022-11-11 12:56:08 +00:00
|
|
|
listeners []net.Listener
|
|
|
|
udpListeners []net.PacketConn
|
|
|
|
service shadowsocks.Service
|
|
|
|
}
|
|
|
|
|
|
|
|
var _listener *Listener
|
|
|
|
|
2022-12-05 02:12:53 +00:00
|
|
|
func New(config LC.ShadowsocksServer, tcpIn chan<- C.ConnContext, udpIn chan<- C.PacketAdapter, additions ...inbound.Addition) (C.MultiAddrListener, error) {
|
|
|
|
var sl *Listener
|
|
|
|
var err error
|
|
|
|
if len(additions) == 0 {
|
|
|
|
additions = []inbound.Addition{
|
|
|
|
inbound.WithInName("DEFAULT-SHADOWSOCKS"),
|
|
|
|
inbound.WithSpecialRules(""),
|
|
|
|
}
|
|
|
|
defer func() {
|
|
|
|
_listener = sl
|
|
|
|
}()
|
2022-11-11 12:56:08 +00:00
|
|
|
}
|
2022-12-05 02:12:53 +00:00
|
|
|
|
2022-11-11 12:56:08 +00:00
|
|
|
udpTimeout := int64(sing.UDPTimeout.Seconds())
|
|
|
|
|
|
|
|
h := &sing.ListenerHandler{
|
2022-12-05 02:12:53 +00:00
|
|
|
TcpIn: tcpIn,
|
|
|
|
UdpIn: udpIn,
|
|
|
|
Type: C.SHADOWSOCKS,
|
|
|
|
Additions: additions,
|
2022-11-11 12:56:08 +00:00
|
|
|
}
|
|
|
|
|
2022-12-05 02:12:53 +00:00
|
|
|
sl = &Listener{false, config, nil, nil, nil}
|
2022-11-11 12:56:08 +00:00
|
|
|
|
|
|
|
switch {
|
2022-12-05 02:12:53 +00:00
|
|
|
case config.Cipher == shadowsocks.MethodNone:
|
2022-11-11 12:56:08 +00:00
|
|
|
sl.service = shadowsocks.NewNoneService(udpTimeout, h)
|
2022-12-05 02:12:53 +00:00
|
|
|
case common.Contains(shadowaead.List, config.Cipher):
|
|
|
|
sl.service, err = shadowaead.NewService(config.Cipher, nil, config.Password, udpTimeout, h)
|
|
|
|
case common.Contains(shadowaead_2022.List, config.Cipher):
|
|
|
|
sl.service, err = shadowaead_2022.NewServiceWithPassword(config.Cipher, config.Password, udpTimeout, h)
|
2022-11-11 12:56:08 +00:00
|
|
|
default:
|
2022-12-05 02:12:53 +00:00
|
|
|
err = fmt.Errorf("shadowsocks: unsupported method: %s", config.Cipher)
|
2022-11-16 02:43:16 +00:00
|
|
|
return embedSS.New(config, tcpIn, udpIn)
|
2022-11-11 12:56:08 +00:00
|
|
|
}
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
2022-12-05 02:12:53 +00:00
|
|
|
for _, addr := range strings.Split(config.Listen, ",") {
|
2022-11-11 12:56:08 +00:00
|
|
|
addr := addr
|
|
|
|
|
|
|
|
//UDP
|
|
|
|
ul, err := net.ListenPacket("udp", addr)
|
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
|
|
|
err = sockopt.UDPReuseaddr(ul.(*net.UDPConn))
|
|
|
|
if err != nil {
|
|
|
|
log.Warnln("Failed to Reuse UDP Address: %s", err)
|
|
|
|
}
|
|
|
|
|
|
|
|
sl.udpListeners = append(sl.udpListeners, ul)
|
|
|
|
|
|
|
|
go func() {
|
|
|
|
conn := bufio.NewPacketConn(ul)
|
|
|
|
for {
|
|
|
|
buff := buf.NewPacket()
|
|
|
|
remoteAddr, err := conn.ReadPacket(buff)
|
|
|
|
if err != nil {
|
|
|
|
buff.Release()
|
|
|
|
if sl.closed {
|
|
|
|
break
|
|
|
|
}
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
_ = sl.service.NewPacket(context.TODO(), conn, buff, metadata.Metadata{
|
|
|
|
Protocol: "shadowsocks",
|
|
|
|
Source: remoteAddr,
|
|
|
|
})
|
|
|
|
}
|
|
|
|
}()
|
|
|
|
|
|
|
|
//TCP
|
2022-11-16 02:43:16 +00:00
|
|
|
l, err := inbound.Listen("tcp", addr)
|
2022-11-11 12:56:08 +00:00
|
|
|
if err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
sl.listeners = append(sl.listeners, l)
|
|
|
|
|
|
|
|
go func() {
|
|
|
|
for {
|
|
|
|
c, err := l.Accept()
|
|
|
|
if err != nil {
|
|
|
|
if sl.closed {
|
|
|
|
break
|
|
|
|
}
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
_ = c.(*net.TCPConn).SetKeepAlive(true)
|
|
|
|
|
2022-11-11 14:44:44 +00:00
|
|
|
go sl.HandleConn(c, tcpIn)
|
2022-11-11 12:56:08 +00:00
|
|
|
}
|
|
|
|
}()
|
|
|
|
}
|
|
|
|
|
|
|
|
return sl, nil
|
|
|
|
}
|
|
|
|
|
2022-12-04 16:20:50 +00:00
|
|
|
func (l *Listener) Close() error {
|
2022-11-11 12:56:08 +00:00
|
|
|
l.closed = true
|
2022-12-04 16:20:50 +00:00
|
|
|
var retErr error
|
2022-11-11 12:56:08 +00:00
|
|
|
for _, lis := range l.listeners {
|
2022-12-04 16:20:50 +00:00
|
|
|
err := lis.Close()
|
|
|
|
if err != nil {
|
|
|
|
retErr = err
|
|
|
|
}
|
2022-11-11 12:56:08 +00:00
|
|
|
}
|
|
|
|
for _, lis := range l.udpListeners {
|
2022-12-04 16:20:50 +00:00
|
|
|
err := lis.Close()
|
|
|
|
if err != nil {
|
|
|
|
retErr = err
|
|
|
|
}
|
2022-11-11 12:56:08 +00:00
|
|
|
}
|
2022-12-04 16:20:50 +00:00
|
|
|
return retErr
|
2022-11-11 12:56:08 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
func (l *Listener) Config() string {
|
2022-12-05 02:12:53 +00:00
|
|
|
return l.config.String()
|
2022-11-11 12:56:08 +00:00
|
|
|
}
|
|
|
|
|
2022-12-04 16:20:50 +00:00
|
|
|
func (l *Listener) AddrList() (addrList []net.Addr) {
|
|
|
|
for _, lis := range l.listeners {
|
|
|
|
addrList = append(addrList, lis.Addr())
|
|
|
|
}
|
|
|
|
for _, lis := range l.udpListeners {
|
|
|
|
addrList = append(addrList, lis.LocalAddr())
|
|
|
|
}
|
|
|
|
return
|
|
|
|
}
|
|
|
|
|
2022-12-05 02:12:53 +00:00
|
|
|
func (l *Listener) HandleConn(conn net.Conn, in chan<- C.ConnContext, additions ...inbound.Addition) {
|
|
|
|
ctx := sing.WithAdditions(context.TODO(), additions...)
|
|
|
|
err := l.service.NewConnection(ctx, conn, metadata.Metadata{
|
2022-11-11 12:56:08 +00:00
|
|
|
Protocol: "shadowsocks",
|
|
|
|
Source: metadata.ParseSocksaddr(conn.RemoteAddr().String()),
|
|
|
|
})
|
|
|
|
if err != nil {
|
|
|
|
_ = conn.Close()
|
|
|
|
return
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2022-12-05 02:12:53 +00:00
|
|
|
func HandleShadowSocks(conn net.Conn, in chan<- C.ConnContext, additions ...inbound.Addition) bool {
|
2022-11-11 12:56:08 +00:00
|
|
|
if _listener != nil && _listener.service != nil {
|
2022-12-05 02:12:53 +00:00
|
|
|
go _listener.HandleConn(conn, in, additions...)
|
2022-11-11 12:56:08 +00:00
|
|
|
return true
|
|
|
|
}
|
2022-12-05 02:12:53 +00:00
|
|
|
return embedSS.HandleShadowSocks(conn, in, additions...)
|
2022-11-11 12:56:08 +00:00
|
|
|
}
|