go-gost/gost
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

add sshd listener

Browse Source
This commit is contained in:
ginuerzh
2022-01-26 15:53:33 +08:00
parent a134026e76
commit 04dfc8c4c3
39 changed files with 1101 additions and 848 deletions
Download Patch File Download Diff File Expand all files Collapse all files

60
pkg/handler/socks/v5/mbind.go
View File

@ -9,43 +9,44 @@ import (
"github.com/go-gost/gosocks5"
"github.com/go-gost/gost/pkg/common/util/mux"
"github.com/go-gost/gost/pkg/handler"
"github.com/go-gost/gost/pkg/logger"
)
func (h *socks5Handler) handleMuxBind(ctx context.Context, conn net.Conn, network, address string) {
h.logger = h.logger.WithFields(map[string]interface{}{
func (h *socks5Handler) handleMuxBind(ctx context.Context, conn net.Conn, network, address string, log logger.Logger) {
log = log.WithFields(map[string]interface{}{
"dst": fmt.Sprintf("%s/%s", address, network),
"cmd": "mbind",
})
h.logger.Infof("%s >> %s", conn.RemoteAddr(), address)
log.Infof("%s >> %s", conn.RemoteAddr(), address)
if !h.md.enableBind {
reply := gosocks5.NewReply(gosocks5.NotAllowed, nil)
reply.Write(conn)
h.logger.Debug(reply)
h.logger.Error("BIND is diabled")
log.Debug(reply)
log.Error("BIND is diabled")
return
}
h.muxBindLocal(ctx, conn, network, address)
h.muxBindLocal(ctx, conn, network, address, log)
}
func (h *socks5Handler) muxBindLocal(ctx context.Context, conn net.Conn, network, address string) {
func (h *socks5Handler) muxBindLocal(ctx context.Context, conn net.Conn, network, address string, log logger.Logger) {
ln, err := net.Listen(network, address) // strict mode: if the port already in use, it will return error
if err != nil {
h.logger.Error(err)
log.Error(err)
reply := gosocks5.NewReply(gosocks5.Failure, nil)
if err := reply.Write(conn); err != nil {
h.logger.Error(err)
log.Error(err)
}
h.logger.Debug(reply)
log.Debug(reply)
return
}
socksAddr := gosocks5.Addr{}
err = socksAddr.ParseFrom(ln.Addr().String())
if err != nil {
h.logger.Warn(err)
log.Warn(err)
}
// Issue: may not reachable when host has multi-interface
@ -53,26 +54,26 @@ func (h *socks5Handler) muxBindLocal(ctx context.Context, conn net.Conn, network
socksAddr.Type = 0
reply := gosocks5.NewReply(gosocks5.Succeeded, &socksAddr)
if err := reply.Write(conn); err != nil {
h.logger.Error(err)
log.Error(err)
ln.Close()
return
}
h.logger.Debug(reply)
log.Debug(reply)
h.logger = h.logger.WithFields(map[string]interface{}{
log = log.WithFields(map[string]interface{}{
"bind": fmt.Sprintf("%s/%s", ln.Addr(), ln.Addr().Network()),
})
h.logger.Debugf("bind on %s OK", ln.Addr())
log.Debugf("bind on %s OK", ln.Addr())
h.serveMuxBind(ctx, conn, ln)
h.serveMuxBind(ctx, conn, ln, log)
}
func (h *socks5Handler) serveMuxBind(ctx context.Context, conn net.Conn, ln net.Listener) {
func (h *socks5Handler) serveMuxBind(ctx context.Context, conn net.Conn, ln net.Listener, log logger.Logger) {
// Upgrade connection to multiplex stream.
session, err := mux.ClientSession(conn)
if err != nil {
h.logger.Error(err)
log.Error(err)
return
}
defer session.Close()
@ -82,7 +83,7 @@ func (h *socks5Handler) serveMuxBind(ctx context.Context, conn net.Conn, ln net.
for {
conn, err := session.Accept()
if err != nil {
h.logger.Error(err)
log.Error(err)
return
}
conn.Close() // we do not handle incoming connections.
@ -92,17 +93,21 @@ func (h *socks5Handler) serveMuxBind(ctx context.Context, conn net.Conn, ln net.
for {
rc, err := ln.Accept()
if err != nil {
h.logger.Error(err)
log.Error(err)
return
}
h.logger.Debugf("peer %s accepted", rc.RemoteAddr())
log.Debugf("peer %s accepted", rc.RemoteAddr())
go func(c net.Conn) {
defer c.Close()
log = log.WithFields(map[string]interface{}{
"local": rc.LocalAddr().String(),
"remote": rc.RemoteAddr().String(),
})
sc, err := session.GetConn()
if err != nil {
h.logger.Error(err)
log.Error(err)
return
}
defer sc.Close()
@ -113,18 +118,17 @@ func (h *socks5Handler) serveMuxBind(ctx context.Context, conn net.Conn, ln net.
addr.ParseFrom(c.RemoteAddr().String())
reply := gosocks5.NewReply(gosocks5.Succeeded, &addr)
if err := reply.Write(sc); err != nil {
h.logger.Error(err)
log.Error(err)
return
}
h.logger.Debug(reply)
log.Debug(reply)
}
t := time.Now()
h.logger.Infof("%s <-> %s", conn.RemoteAddr(), c.RemoteAddr().String())
log.Infof("%s <-> %s", c.LocalAddr(), c.RemoteAddr())
handler.Transport(sc, c)
h.logger.
WithFields(map[string]interface{}{"duration": time.Since(t)}).
Infof("%s >-< %s", conn.RemoteAddr(), c.RemoteAddr().String())
log.WithFields(map[string]interface{}{"duration": time.Since(t)}).
Infof("%s >-< %s", c.LocalAddr(), c.RemoteAddr())
}(rc)
}
}