120 lines
2.6 KiB
Go
120 lines
2.6 KiB
Go
package shadowsocks
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import (
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"net"
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"strings"
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"github.com/Dreamacro/clash/adapter/inbound"
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N "github.com/Dreamacro/clash/common/net"
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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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"github.com/Dreamacro/clash/transport/shadowsocks/core"
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"github.com/Dreamacro/clash/transport/socks5"
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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 []*UDPListener
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pickCipher core.Cipher
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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) (*Listener, error) {
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pickCipher, err := core.PickCipher(config.Cipher, nil, config.Password)
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if err != nil {
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return nil, err
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}
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sl := &Listener{false, config, nil, nil, pickCipher}
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_listener = sl
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for _, addr := range strings.Split(config.Listen, ",") {
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addr := addr
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if config.Udp {
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//UDP
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ul, err := NewUDP(addr, pickCipher, udpIn)
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if err != nil {
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return nil, err
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}
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sl.udpListeners = append(sl.udpListeners, ul)
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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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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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conn = l.pickCipher.StreamConn(conn)
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conn = N.NewDeadlineConn(conn) // embed ss can't handle readDeadline correctly
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target, err := socks5.ReadAddr0(conn)
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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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in <- inbound.NewSocket(target, conn, C.SHADOWSOCKS, additions...)
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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.pickCipher != 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 false
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}
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