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