add tls tunnel

README.md

@@ -11,7 +11,7 @@ gost - GO Simple Tunnel
 5. 多种加密方式(tls,aes-256-cfb,des-cfb,rc4-md5等)。
 6. 客户端兼容shadowsocks协议，可作为shadowsocks服务器。
 
-二进制文件下载：https://bintray.com/ginuerzh/gost/gost/view
+二进制文件下载：https://github.com/ginuerzh/gost/releases
 
 Google讨论组: https://groups.google.com/d/forum/go-gost
 

client.go

@@ -6,6 +6,7 @@ import (
 	"crypto/tls"
 	"encoding/base64"
 	"encoding/binary"
+	//"encoding/hex"
 	"errors"
 	"fmt"
 	"github.com/ginuerzh/gosocks5"
@@ -103,7 +104,11 @@ func makeTunnel() (c net.Conn, err error) {
 	if err != nil {
 		return
 	}
-	if UseWebsocket {
+
+	if UseTLS {
+		config := &tls.Config{InsecureSkipVerify: true}
+		c = tls.Client(c, config)
+	} else if UseWebsocket {
 		ws, resp, err := websocket.NewClient(c, &url.URL{Host: Saddr}, nil, 8192, 8192)
 		if err != nil {
 			c.Close()
@@ -166,6 +171,7 @@ func cliHandle(conn net.Conn) {
 
 	req, err := http.ReadRequest(bufio.NewReader(newReqReader(b[:n], conn)))
 	if err != nil {
+		//log.Println(hex.Dump(b[:n]))
 		log.Println(err)
 		return
 	}

log.go

@@ -1,80 +0,0 @@
-package main
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-	"os"
-)
-
-var (
-	Debug bool
-)
-
-type BufferedLog struct {
-	buffer *bytes.Buffer
-	w      io.WriteCloser
-}
-
-func NewLog(buffered bool) *BufferedLog {
-	log := &BufferedLog{
-		w: os.Stdout,
-	}
-	if buffered {
-		log.buffer = &bytes.Buffer{}
-	}
-
-	return log
-}
-
-func NewFileLog(file *os.File) *BufferedLog {
-	return &BufferedLog{
-		buffer: &bytes.Buffer{},
-		w:      file,
-	}
-}
-
-func (log *BufferedLog) Log(a ...interface{}) (int, error) {
-	if !Debug {
-		return 0, nil
-	}
-	if log.buffer != nil {
-		return fmt.Fprint(log.buffer, a...)
-	}
-	return fmt.Fprint(log.w, a...)
-}
-
-func (log *BufferedLog) Logln(a ...interface{}) (int, error) {
-	if !Debug {
-		return 0, nil
-	}
-	if log.buffer != nil {
-		return fmt.Fprintln(log.buffer, a...)
-	}
-	return fmt.Fprintln(log.w, a...)
-}
-
-func (log *BufferedLog) Logf(format string, a ...interface{}) (int, error) {
-	if !Debug {
-		return 0, nil
-	}
-	if log.buffer != nil {
-		return fmt.Fprintf(log.buffer, format, a...)
-	}
-	return fmt.Fprintf(log.w, format, a...)
-}
-
-func (log *BufferedLog) Flush() error {
-	defer func() {
-		if log.w != os.Stdout {
-			log.w.Close()
-		}
-	}()
-
-	if !Debug || log.buffer == nil {
-		return nil
-	}
-
-	_, err := log.buffer.WriteTo(log.w)
-	return err
-}

main.go

@@ -9,13 +9,13 @@ import (
 )
 
 var (
-	Laddr, Saddr, Proxy   string
-	UseWebsocket, UseHttp bool
-	Shadows               bool
-	SMethod, SPassword    string
-	Method, Password      string
-	CertFile, KeyFile     string
-	PrintVersion          bool
+	Laddr, Saddr, Proxy           string
+	UseWebsocket, UseHttp, UseTLS bool
+	Shadows                       bool
+	SMethod, SPassword            string
+	Method, Password              string
+	CertFile, KeyFile             string
+	PrintVersion                  bool
 
 	proxyURL  *url.URL
 	listenUrl *url.URL
@@ -30,6 +30,7 @@ func init() {
 	flag.StringVar(&CertFile, "cert", "", "tls cert file")
 	flag.StringVar(&KeyFile, "key", "", "tls key file")
 	flag.BoolVar(&Shadows, "ss", false, "run as shadowsocks server")
+	flag.BoolVar(&UseTLS, "tls", false, "use ssl/tls tunnel")
 	flag.BoolVar(&UseWebsocket, "ws", false, "use websocket tunnel")
 	flag.BoolVar(&UseHttp, "http", false, "use http tunnel")
 	flag.StringVar(&SMethod, "sm", "rc4-md5", "shadowsocks cipher method")
@@ -59,7 +60,9 @@ func main() {
 
 	if len(Saddr) == 0 {
 		var server Server
-		if UseWebsocket {
+		if UseTLS {
+			server = &TlsServer{Addr: laddr, CertFile: CertFile, KeyFile: KeyFile}
+		} else if UseWebsocket {
 			server = &WSServer{Addr: laddr}
 		} else if UseHttp {
 			server = &HttpServer{Addr: laddr}

socks5.go

@@ -180,7 +180,7 @@ func serveSocks5(conn net.Conn) {
 		//log.Println("connect", req.Addr.String())
 		tconn, err := connect(req.Addr.String())
 		if err != nil {
-			log.Println(err)
+			log.Println("connect", req.Addr.String(), err)
 			gosocks5.NewReply(gosocks5.HostUnreachable, nil).Write(conn)
 			return
 		}
@@ -198,6 +198,7 @@ func serveSocks5(conn net.Conn) {
 		l, err := net.ListenTCP("tcp", nil)
 		if err != nil {
 			gosocks5.NewReply(gosocks5.Failure, nil).Write(conn)
+			log.Println("bind listen", err)
 			return
 		}
 
@@ -207,6 +208,7 @@ func serveSocks5(conn net.Conn) {
 		rep := gosocks5.NewReply(gosocks5.Succeeded, addr)
 		if err := rep.Write(conn); err != nil {
 			log.Println(err)
+			l.Close()
 			return
 		}
 
@@ -233,7 +235,7 @@ func serveSocks5(conn net.Conn) {
 	case gosocks5.CmdUdp:
 		uconn, err := net.ListenUDP("udp", nil)
 		if err != nil {
-			log.Println(err)
+			log.Println("udp listen", err)
 			gosocks5.NewReply(gosocks5.Failure, nil).Write(conn)
 			return
 		}

tls.go

@@ -0,0 +1,51 @@
+package main
+
+import (
+	"crypto/tls"
+	"github.com/ginuerzh/gosocks5"
+	"net"
+)
+
+type TlsServer struct {
+	Addr              string
+	CertFile, KeyFile string
+}
+
+func (s *TlsServer) ListenAndServe() error {
+	return s.listenAndServeTLS()
+}
+
+func (s *TlsServer) listenAndServeTLS() error {
+	var cert tls.Certificate
+	var err error
+
+	if len(s.CertFile) == 0 || len(s.KeyFile) == 0 {
+		cert, err = tls.X509KeyPair([]byte(rawCert), []byte(rawKey))
+	} else {
+		cert, err = tls.LoadX509KeyPair(s.CertFile, s.KeyFile)
+	}
+	if err != nil {
+		return err
+	}
+
+	config := &tls.Config{Certificates: []tls.Certificate{cert}}
+	l, err := tls.Listen("tcp", s.Addr, config)
+	if err != nil {
+		return err
+	}
+	defer l.Close()
+
+	for {
+		conn, err := l.Accept()
+		if err != nil {
+			return err
+		}
+
+		go func(c net.Conn) {
+			c = gosocks5.ServerConn(c, serverConfig)
+			serveSocks5(c)
+		}(conn)
+	}
+
+	return nil
+}

version.go

@@ -5,7 +5,7 @@ import (
 )
 
 const (
-	Version = "1.7"
+	Version = "1.8"
 )
 
 func printVersion() {

ws.go

@@ -64,7 +64,7 @@ func (s *WSServer) handle(w http.ResponseWriter, r *http.Request) {
 		log.Println(err)
 		return
 	}
-	defer conn.Close()
+	//defer conn.Close()
 
 	c := gosocks5.ServerConn(NewWSConn(conn), serverConfig)
 	/*