Release v0.3.0

Release v0.3.0

.travis.yml

@@ -3,7 +3,7 @@ language: go
 
 go:
     - 1.4.2
-    - 1.5.1
+    - 1.5.3
 
 install:
     - make

Dockerfile

@@ -2,7 +2,7 @@ FROM golang:1.5
 
 MAINTAINER fatedier
 
-RUN echo "[common]\nbind_addr = 0.0.0.0\nbind_port = 7000\n[wiki]\npasswd = 123\nbind_addr = 0.0.0.0\nlisten_port = 80" > /usr/share/frps.ini
+RUN echo "[common]\nbind_addr = 0.0.0.0\nbind_port = 7000\n[test]\npasswd = 123\nbind_addr = 0.0.0.0\nlisten_port = 80" > /usr/share/frps.ini
 
 ADD ./ /usr/share/frp/
 
@@ -11,4 +11,4 @@ RUN cd /usr/share/frp && make
 EXPOSE 80
 EXPOSE 7000
 
-CMD ["/usr/share/frp/bin/frps -c /usr/share/frps.ini"]
+CMD ["/usr/share/frp/bin/frps", "-c", "/usr/share/frps.ini"]

README.md

@@ -2,13 +2,17 @@
 
 [![Build Status](https://travis-ci.org/fatedier/frp.svg)](https://travis-ci.org/fatedier/frp)
 
+[README](README.md) | [中文文档](README_zh.md)
+
 ## What is frp?
 
-frp is a fast reverse proxy which can help you expose a local server behind a NAT or firewall to the internet.
+frp is a fast reverse proxy to help you expose a local server behind a NAT or firewall to the internet.
 
 ## Status
 
-frp is under development and you can try it with available version 0.2.0.
+frp is under development and you can try it with latest release version.Master branch for releasing stable version when dev branch for developing.
+
+**We may change any protocol and can't promise backward compatible before version 1.x.**
 
 ## Quick Start
 
@@ -28,6 +32,11 @@ Read the [QuickStart](doc/quick_start_en.md) | [使用文档](doc/quick_start_zh
 
 Interested in getting involved? We would love to help you!
 
-For simple bug fixes, just submit a PR with the fix and we can discuss the fix directly in the PR. If the fix is more complex, start with an issue.
+* Take a look at our [issues list](https://github.com/fatedier/frp/issues) and consider submitting a patch
+* If you have some wanderful ideas, send email to fatedier@gmail.com.
 
-If you have some wanderful ideas, send email to fatedier@gmail.com.
+## Contributors
+
+* [fatedier](https://github.com/fatedier)
+* [Hurricanezwf](https://github.com/Hurricanezwf)
+* [vashstorm](https://github.com/vashstorm)

README_zh.md

@@ -0,0 +1,40 @@
+# frp
+
+[![Build Status](https://travis-ci.org/fatedier/frp.svg)](https://travis-ci.org/fatedier/frp)
+
+[README](README.md) | [中文文档](README_zh.md)
+
+>frp 是一个高性能的反向代理应用，可以帮助你轻松的进行内网穿透，对外网提供服务。
+
+## 开发状态
+
+frp 目前正在前期开发阶段，master分支用于发布稳定版本，dev分支用于开发，您可以尝试下载最新的 release 版本进行测试。
+
+**在 1.x 版本以前，交互协议都可能会被改变，不能保证向后兼容。**
+
+## 快速开始
+
+[QuickStart](doc/quick_start_en.md) | [使用文档](doc/quick_start_zh.md)
+
+## 架构
+
+![architecture](doc/pic/architecture.png)
+
+## frp 的作用?
+
+* 利用处于内网或防火墙后的机器，对外网环境提供http服务。（针对http的优化正在开发中）
+* 利用处于内网或防火墙后的机器，对外网环境提供tcp服务。
+* 可查看通过代理的所有http请求和响应信息。（待开发）
+
+## 贡献代码
+
+如果您对这个项目感兴趣，并且想要参与其中，我们非常欢迎！
+
+* 如果您需要提交问题，可以通过 [issues](https://github.com/fatedier/frp/issues) 来完成。
+* 如果您有新的功能需求，可以反馈至 fatedier@gmail.com 共同讨论。
+
+## 贡献者
+
+* [fatedier](https://github.com/fatedier)
+* [Hurricanezwf](https://github.com/Hurricanezwf)
+* [vashstorm](https://github.com/vashstorm)

conf/frpc.ini

@@ -6,9 +6,12 @@ server_port = 7000
 log_file = console
 # debug, info, warn, error
 log_level = debug
+# for authentication
+auth_token = 123
 
 # test1 is the proxy name same as server's configuration
 [test1]
-passwd = 123
 local_ip = 127.0.0.1
 local_port = 22
+# true or false, if true, messages between frps and frpc will be encrypted, default is false
+use_encryption = true

conf/frps.ini

@@ -7,8 +7,8 @@ log_file = console
 # debug, info, warn, error
 log_level = debug
 
-# test1 is the proxy name, client will use this name and passwd to connect to server
+# test1 is the proxy name, client will use this name and auth_token to connect to server
 [test1]
-passwd = 123
+auth_token = 123
 bind_addr = 0.0.0.0
 listen_port = 6000

doc/quick_start_en.md

@@ -44,7 +44,7 @@ log_level = info
 
 # test is the custom name of proxy and there can be many proxies with unique name in one configure file
 [test]
-passwd = 123
+auth_token = 123
 bind_addr = 0.0.0.0
 # finally we connect to server A by this port
 listen_port = 6000
@@ -59,10 +59,13 @@ server_addr = x.x.x.x
 server_port = 7000
 log_file = ./frpc.log
 log_level = info
+# for authentication
+auth_token = 123
 
 # test is proxy name same with configure in frps.ini
 [test]
-passwd = 123
 # local port which need to be transferred
 local_port = 22
+# if use_encryption equals true, messages between frpc and frps will be encrypted, default is false
+use_encryption = true
 ```

doc/quick_start_zh.md

@@ -42,7 +42,7 @@ log_level = info
 
 # test 为代理的自定义名称，可以有多个，不能重复，和frpc中名称对应
 [test]
-passwd = 123
+auth_token = 123
 bind_addr = 0.0.0.0
 # 最后将通过此端口访问后端服务
 listen_port = 6000
@@ -57,10 +57,13 @@ server_addr = x.x.x.x
 server_port = 7000
 log_file = ./frpc.log
 log_level = info
+# 用于身份验证
+auth_token = 123
 
 # test需要和 frps.ini 中配置一致
 [test]
-passwd = 123
 # 需要转发的本地端口
 local_port = 22
+# 启用加密，frpc与frps之间通信加密，默认为 false
+use_encryption = true
 ```

src/frp/cmd/frpc/control.go

@@ -26,66 +26,101 @@ import (
 	"frp/models/msg"
 	"frp/utils/conn"
 	"frp/utils/log"
+	"frp/utils/pcrypto"
 )
 
-var connection *conn.Conn = nil
-var heartBeatTimer *time.Timer = nil
-
 func ControlProcess(cli *client.ProxyClient, wait *sync.WaitGroup) {
 	defer wait.Done()
 
+	msgSendChan := make(chan interface{}, 1024)
+
 	c, err := loginToServer(cli)
 	if err != nil {
 		log.Error("ProxyName [%s], connect to server failed!", cli.Name)
 		return
 	}
-	connection = c
+	defer c.Close()
-	defer connection.Close()
+
+	go heartbeatSender(c, msgSendChan)
+
+	go msgSender(cli, c, msgSendChan)
+	msgReader(cli, c, msgSendChan)
+
+	close(msgSendChan)
+}
+
+// loop for reading messages from frpc after control connection is established
+func msgReader(cli *client.ProxyClient, c *conn.Conn, msgSendChan chan interface{}) error {
+	// for heartbeat
+	var heartbeatTimeout bool = false
+	timer := time.AfterFunc(time.Duration(client.HeartBeatTimeout)*time.Second, func() {
+		heartbeatTimeout = true
+		c.Close()
+		log.Error("ProxyName [%s], heartbeatRes from frps timeout", cli.Name)
+	})
+	defer timer.Stop()
 
 	for {
-		// ignore response content now
+		buf, err := c.ReadLine()
-		content, err := connection.ReadLine()
+		if err == io.EOF || c == nil || c.IsClosed() {
-		if err == io.EOF || nil == connection || connection.IsClosed() {
+			c.Close()
-			log.Debug("ProxyName [%s], server close this control conn", cli.Name)
+			log.Warn("ProxyName [%s], frps close this control conn!", cli.Name)
-			var sleepTime time.Duration = 1
+			var delayTime time.Duration = 1
 
-			// loop until connect to server
+			// loop until reconnect to frps
 			for {
-				log.Debug("ProxyName [%s], try to reconnect to server[%s:%d]...", cli.Name, client.ServerAddr, client.ServerPort)
+				log.Info("ProxyName [%s], try to reconnect to frps [%s:%d]...", cli.Name, client.ServerAddr, client.ServerPort)
-				tmpConn, err := loginToServer(cli)
+				c, err = loginToServer(cli)
 				if err == nil {
-					connection.Close()
+					go heartbeatSender(c, msgSendChan)
-					connection = tmpConn
 					break
 				}
 
-				if sleepTime < 60 {
+				if delayTime < 60 {
-					sleepTime = sleepTime * 2
+					delayTime = delayTime * 2
 				}
-				time.Sleep(sleepTime * time.Second)
+				time.Sleep(delayTime * time.Second)
 			}
-			continue
 		} else if err != nil {
-			log.Warn("ProxyName [%s], read from server error, %v", cli.Name, err)
+			log.Warn("ProxyName [%s], read from frps error: %v", cli.Name, err)
 			continue
 		}
 
-		clientCtlRes := &msg.ClientCtlRes{}
+		ctlRes := &msg.ControlRes{}
-		if err := json.Unmarshal([]byte(content), clientCtlRes); err != nil {
+		if err := json.Unmarshal([]byte(buf), &ctlRes); err != nil {
-			log.Warn("Parse err: %v : %s", err, content)
+			log.Warn("ProxyName [%s], parse msg from frps error: %v : %s", cli.Name, err, buf)
-			continue
-		}
-		if consts.SCHeartBeatRes == clientCtlRes.GeneralRes.Code {
-			if heartBeatTimer != nil {
-				log.Debug("Client rcv heartbeat response")
-				heartBeatTimer.Reset(time.Duration(client.HeartBeatTimeout) * time.Second)
-			} else {
-				log.Error("heartBeatTimer is nil")
-			}
 			continue
 		}
 
+		switch ctlRes.Type {
+		case consts.HeartbeatRes:
+			log.Debug("ProxyName [%s], receive heartbeat response", cli.Name)
+			timer.Reset(time.Duration(client.HeartBeatTimeout) * time.Second)
+		case consts.NoticeUserConn:
+			log.Debug("ProxyName [%s], new user connection", cli.Name)
 			cli.StartTunnel(client.ServerAddr, client.ServerPort)
+		default:
+			log.Warn("ProxyName [%s}, unsupport msgType [%d]", cli.Name, ctlRes.Type)
+		}
+	}
+	return nil
+}
+
+// loop for sending messages from channel to frps
+func msgSender(cli *client.ProxyClient, c *conn.Conn, msgSendChan chan interface{}) {
+	for {
+		msg, ok := <-msgSendChan
+		if !ok {
+			break
+		}
+
+		buf, _ := json.Marshal(msg)
+		err := c.Write(string(buf) + "\n")
+		if err != nil {
+			log.Warn("ProxyName [%s], write to client error, proxy exit", cli.Name)
+			c.Close()
+			break
+		}
 	}
 }
 
@@ -96,10 +131,14 @@ func loginToServer(cli *client.ProxyClient) (c *conn.Conn, err error) {
 		return
 	}
 
-	req := &msg.ClientCtlReq{
+	nowTime := time.Now().Unix()
-		Type:      consts.CtlConn,
+	authKey := pcrypto.GetAuthKey(cli.Name + cli.AuthToken + fmt.Sprintf("%d", nowTime))
+	req := &msg.ControlReq{
+		Type:          consts.NewCtlConn,
 		ProxyName:     cli.Name,
-		Passwd:    cli.Passwd,
+		AuthKey:       authKey,
+		UseEncryption: cli.UseEncryption,
+		Timestamp:     nowTime,
 	}
 	buf, _ := json.Marshal(req)
 	err = c.Write(string(buf) + "\n")
@@ -115,53 +154,31 @@ func loginToServer(cli *client.ProxyClient) (c *conn.Conn, err error) {
 	}
 	log.Debug("ProxyName [%s], read [%s]", cli.Name, res)
 
-	clientCtlRes := &msg.ClientCtlRes{}
+	ctlRes := &msg.ControlRes{}
-	if err = json.Unmarshal([]byte(res), &clientCtlRes); err != nil {
+	if err = json.Unmarshal([]byte(res), &ctlRes); err != nil {
 		log.Error("ProxyName [%s], format server response error, %v", cli.Name, err)
 		return
 	}
 
-	if clientCtlRes.Code != 0 {
+	if ctlRes.Code != 0 {
-		log.Error("ProxyName [%s], start proxy error, %s", cli.Name, clientCtlRes.Msg)
+		log.Error("ProxyName [%s], start proxy error, %s", cli.Name, ctlRes.Msg)
-		return c, fmt.Errorf("%s", clientCtlRes.Msg)
+		return c, fmt.Errorf("%s", ctlRes.Msg)
 	}
 
-	go startHeartBeat(c)
+	log.Debug("ProxyName [%s], connect to server [%s:%d] success!", cli.Name, client.ServerAddr, client.ServerPort)
-	log.Debug("ProxyName [%s], connect to server[%s:%d] success!", cli.Name, client.ServerAddr, client.ServerPort)
-
 	return
 }
 
-func startHeartBeat(c *conn.Conn) {
+func heartbeatSender(c *conn.Conn, msgSendChan chan interface{}) {
-	f := func() {
+	heartbeatReq := &msg.ControlReq{
-		log.Error("HeartBeat timeout!")
+		Type: consts.HeartbeatReq,
-		if c != nil {
-			c.Close()
 	}
-	}
+	log.Info("Start to send heartbeat to frps")
-	heartBeatTimer = time.AfterFunc(time.Duration(client.HeartBeatTimeout)*time.Second, f)
-	defer heartBeatTimer.Stop()
-
-	clientCtlReq := &msg.ClientCtlReq{
-		Type:      consts.CSHeartBeatReq,
-		ProxyName: "",
-		Passwd:    "",
-	}
-	request, err := json.Marshal(clientCtlReq)
-	if err != nil {
-		log.Warn("Serialize clientCtlReq err! Err: %v", err)
-	}
-
-	log.Debug("Start to send heartbeat")
 	for {
 		time.Sleep(time.Duration(client.HeartBeatInterval) * time.Second)
 		if c != nil && !c.IsClosed() {
 			log.Debug("Send heartbeat to server")
-			err = c.Write(string(request) + "\n")
+			msgSendChan <- heartbeatReq
-			if err != nil {
-				log.Error("Send hearbeat to server failed! Err:%v", err)
-				continue
-			}
 		} else {
 			break
 		}

src/frp/cmd/frps/control.go

@@ -25,6 +25,7 @@ import (
 	"frp/models/server"
 	"frp/utils/conn"
 	"frp/utils/log"
+	"frp/utils/pcrypto"
 )
 
 func ProcessControlConn(l *conn.Listener) {
@@ -33,87 +34,162 @@ func ProcessControlConn(l *conn.Listener) {
 		if err != nil {
 			return
 		}
-		log.Debug("Get one new conn, %v", c.GetRemoteAddr())
+		log.Debug("Get new connection, %v", c.GetRemoteAddr())
 		go controlWorker(c)
 	}
 }
 
 // connection from every client and server
 func controlWorker(c *conn.Conn) {
-	// the first message is from client to server
+	// if login message type is NewWorkConn, don't close this connection
-	// if error, close connection
+	var closeFlag bool = true
-	res, err := c.ReadLine()
+	var s *server.ProxyServer
+	defer func() {
+		if closeFlag {
+			c.Close()
+			if s != nil {
+				s.Close()
+			}
+		}
+	}()
+
+	// get login message
+	buf, err := c.ReadLine()
 	if err != nil {
 		log.Warn("Read error, %v", err)
 		return
 	}
-	log.Debug("get: %s", res)
+	log.Debug("Get msg from frpc: %s", buf)
 
-	clientCtlReq := &msg.ClientCtlReq{}
+	cliReq := &msg.ControlReq{}
-	clientCtlRes := &msg.ClientCtlRes{}
+	if err := json.Unmarshal([]byte(buf), &cliReq); err != nil {
-	if err := json.Unmarshal([]byte(res), &clientCtlReq); err != nil {
+		log.Warn("Parse msg from frpc error: %v : %s", err, buf)
-		log.Warn("Parse err: %v : %s", err, res)
 		return
 	}
 
-	// check
+	// do login when type is NewCtlConn or NewWorkConn
-	succ, info, needRes := checkProxy(clientCtlReq, c)
+	ret, info := doLogin(cliReq, c)
-	if !succ {
+	s, ok := server.ProxyServers[cliReq.ProxyName]
-		clientCtlRes.Code = 1
+	if !ok {
-		clientCtlRes.Msg = info
+		log.Warn("ProxyName [%s] is not exist", cliReq.ProxyName)
+		return
 	}
-
+	// if login type is NewWorkConn, nothing will be send to frpc
-	if needRes {
+	if cliReq.Type != consts.NewWorkConn {
-		defer c.Close()
+		cliRes := &msg.ControlRes{
-
+			Type: consts.NewCtlConnRes,
-		buf, _ := json.Marshal(clientCtlRes)
+			Code: ret,
-		err = c.Write(string(buf) + "\n")
+			Msg:  info,
+		}
+		byteBuf, _ := json.Marshal(cliRes)
+		err = c.Write(string(byteBuf) + "\n")
 		if err != nil {
-			log.Warn("Write error, %v", err)
+			log.Warn("ProxyName [%s], write to client error, proxy exit", s.Name)
 			time.Sleep(1 * time.Second)
 			return
 		}
 	} else {
-		// work conn, just return
+		closeFlag = false
 		return
 	}
 
-	// other messages is from server to client
+	// create a channel for sending messages
-	s, ok := server.ProxyServers[clientCtlReq.ProxyName]
+	msgSendChan := make(chan interface{}, 1024)
-	if !ok {
+	go msgSender(s, c, msgSendChan)
-		log.Warn("ProxyName [%s] is not exist", clientCtlReq.ProxyName)
+	go noticeUserConn(s, msgSendChan)
-		return
-	}
 
-	// read control msg from client
+	// loop for reading control messages from frpc and deal with different types
-	go readControlMsgFromClient(s, c)
+	msgReader(s, c, msgSendChan)
-
-	serverCtlReq := &msg.ClientCtlReq{}
-	serverCtlReq.Type = consts.WorkConn
-	for {
-		closeFlag := s.WaitUserConn()
-		if closeFlag {
-			log.Debug("ProxyName [%s], goroutine for dealing user conn is closed", s.Name)
-			break
-		}
-		buf, _ := json.Marshal(serverCtlReq)
-		err = c.Write(string(buf) + "\n")
-		if err != nil {
-			log.Warn("ProxyName [%s], write to client error, proxy exit", s.Name)
-			s.Close()
-			return
-		}
-
-		log.Debug("ProxyName [%s], write to client to add work conn success", s.Name)
-	}
 
+	close(msgSendChan)
 	log.Info("ProxyName [%s], I'm dead!", s.Name)
 	return
 }
 
-func checkProxy(req *msg.ClientCtlReq, c *conn.Conn) (succ bool, info string, needRes bool) {
+// when frps get one new user connection, send NoticeUserConn message to frpc and accept one new WorkConn later
-	succ = false
+func noticeUserConn(s *server.ProxyServer, msgSendChan chan interface{}) {
-	needRes = true
+	for {
+		closeFlag := s.WaitUserConn()
+		if closeFlag {
+			log.Debug("ProxyName [%s], goroutine for noticing user conn is closed", s.Name)
+			break
+		}
+		notice := &msg.ControlRes{
+			Type: consts.NoticeUserConn,
+		}
+		msgSendChan <- notice
+		log.Debug("ProxyName [%s], notice client to add work conn", s.Name)
+	}
+}
+
+// loop for reading messages from frpc after control connection is established
+func msgReader(s *server.ProxyServer, c *conn.Conn, msgSendChan chan interface{}) error {
+	// for heartbeat
+	var heartbeatTimeout bool = false
+	timer := time.AfterFunc(time.Duration(server.HeartBeatTimeout)*time.Second, func() {
+		heartbeatTimeout = true
+		s.Close()
+		c.Close()
+		log.Error("ProxyName [%s], client heartbeat timeout", s.Name)
+	})
+	defer timer.Stop()
+
+	for {
+		buf, err := c.ReadLine()
+		if err != nil {
+			if err == io.EOF {
+				log.Warn("ProxyName [%s], client is dead!", s.Name)
+				return err
+			} else if c == nil || c.IsClosed() {
+				log.Warn("ProxyName [%s], client connection is closed", s.Name)
+				return err
+			}
+			log.Warn("ProxyName [%s], read error: %v", s.Name, err)
+			continue
+		}
+
+		cliReq := &msg.ControlReq{}
+		if err := json.Unmarshal([]byte(buf), &cliReq); err != nil {
+			log.Warn("ProxyName [%s], parse msg from frpc error: %v : %s", s.Name, err, buf)
+			continue
+		}
+
+		switch cliReq.Type {
+		case consts.HeartbeatReq:
+			log.Debug("ProxyName [%s], get heartbeat", s.Name)
+			timer.Reset(time.Duration(server.HeartBeatTimeout) * time.Second)
+			heartbeatRes := msg.ControlRes{
+				Type: consts.HeartbeatRes,
+			}
+			msgSendChan <- heartbeatRes
+		default:
+			log.Warn("ProxyName [%s}, unsupport msgType [%d]", s.Name, cliReq.Type)
+		}
+	}
+	return nil
+}
+
+// loop for sending messages from channel to frpc
+func msgSender(s *server.ProxyServer, c *conn.Conn, msgSendChan chan interface{}) {
+	for {
+		msg, ok := <-msgSendChan
+		if !ok {
+			break
+		}
+
+		buf, _ := json.Marshal(msg)
+		err := c.Write(string(buf) + "\n")
+		if err != nil {
+			log.Warn("ProxyName [%s], write to client error, proxy exit", s.Name)
+			s.Close()
+			break
+		}
+	}
+}
+
+// if success, ret equals 0, otherwise greater than 0
+func doLogin(req *msg.ControlReq, c *conn.Conn) (ret int64, info string) {
+	ret = 1
 	// check if proxy name exist
 	s, ok := server.ProxyServers[req.ProxyName]
 	if !ok {
@@ -122,97 +198,53 @@ func checkProxy(req *msg.ClientCtlReq, c *conn.Conn) (succ bool, info string, ne
 		return
 	}
 
-	// check password
+	// check authKey
-	if req.Passwd != s.Passwd {
+	nowTime := time.Now().Unix()
-		info = fmt.Sprintf("ProxyName [%s], password is not correct", req.ProxyName)
+	authKey := pcrypto.GetAuthKey(req.ProxyName + s.AuthToken + fmt.Sprintf("%d", req.Timestamp))
+	// authKey avaiable in 15 minutes
+	if nowTime-req.Timestamp > 15*60 {
+		info = fmt.Sprintf("ProxyName [%s], authorization timeout", req.ProxyName)
+		log.Warn(info)
+		return
+	} else if req.AuthKey != authKey {
+		info = fmt.Sprintf("ProxyName [%s], authorization failed", req.ProxyName)
 		log.Warn(info)
 		return
 	}
 
 	// control conn
-	if req.Type == consts.CtlConn {
+	if req.Type == consts.NewCtlConn {
-		if s.Status != consts.Idle {
+		if s.Status == consts.Working {
 			info = fmt.Sprintf("ProxyName [%s], already in use", req.ProxyName)
 			log.Warn(info)
 			return
 		}
 
-		// start proxy and listen for user conn, no block
+		// set infomations from frpc
+		s.UseEncryption = req.UseEncryption
+
+		// start proxy and listen for user connections, no block
 		err := s.Start()
 		if err != nil {
-			info = fmt.Sprintf("ProxyName [%s], start proxy error: %v", req.ProxyName, err.Error())
+			info = fmt.Sprintf("ProxyName [%s], start proxy error: %v", req.ProxyName, err)
 			log.Warn(info)
 			return
 		}
-
 		log.Info("ProxyName [%s], start proxy success", req.ProxyName)
-	} else if req.Type == consts.WorkConn {
+	} else if req.Type == consts.NewWorkConn {
 		// work conn
-		needRes = false
 		if s.Status != consts.Working {
-			log.Warn("ProxyName [%s], is not working when it gets one new work conn", req.ProxyName)
+			log.Warn("ProxyName [%s], is not working when it gets one new work connnection", req.ProxyName)
 			return
 		}
-
+		// the connection will close after join over
-		s.GetNewCliConn(c)
+		s.RecvNewWorkConn(c)
 	} else {
-		info = fmt.Sprintf("ProxyName [%s], type [%d] unsupport", req.ProxyName, req.Type)
+		info = fmt.Sprintf("Unsupport login message type [%d]", req.Type)
-		log.Warn(info)
+		log.Warn("Unsupport login message type [%d]", req.Type)
 		return
 	}
 
-	succ = true
+	ret = 0
 	return
 }
-
-func readControlMsgFromClient(s *server.ProxyServer, c *conn.Conn) {
-	isContinueRead := true
-	f := func() {
-		isContinueRead = false
-		s.Close()
-		log.Error("ProxyName [%s], client heartbeat timeout", s.Name)
-	}
-	timer := time.AfterFunc(time.Duration(server.HeartBeatTimeout)*time.Second, f)
-	defer timer.Stop()
-
-	for isContinueRead {
-		content, err := c.ReadLine()
-		if err != nil {
-			if err == io.EOF {
-				log.Warn("ProxyName [%s], client is dead!", s.Name)
-				s.Close()
-				break
-			} else if nil == c || c.IsClosed() {
-				log.Warn("ProxyName [%s], client connection is closed", s.Name)
-				break
-			}
-
-			log.Error("ProxyName [%s], read error: %v", s.Name, err)
-			continue
-		}
-
-		clientCtlReq := &msg.ClientCtlReq{}
-		if err := json.Unmarshal([]byte(content), clientCtlReq); err != nil {
-			log.Warn("Parse err: %v : %s", err, content)
-			continue
-		}
-		if consts.CSHeartBeatReq == clientCtlReq.Type {
-			log.Debug("ProxyName [%s], get heartbeat", s.Name)
-			timer.Reset(time.Duration(server.HeartBeatTimeout) * time.Second)
-
-			clientCtlRes := &msg.ClientCtlRes{}
-			clientCtlRes.GeneralRes.Code = consts.SCHeartBeatRes
-			response, err := json.Marshal(clientCtlRes)
-			if err != nil {
-				log.Warn("Serialize ClientCtlRes err! err: %v", err)
-				continue
-			}
-
-			err = c.Write(string(response) + "\n")
-			if err != nil {
-				log.Error("Send heartbeat response to client failed! Err:%v", err)
-				continue
-			}
-		}
-	}
-}

src/frp/models/client/client.go

@@ -16,18 +16,22 @@ package client
 
 import (
 	"encoding/json"
+	"fmt"
+	"time"
 
 	"frp/models/consts"
 	"frp/models/msg"
 	"frp/utils/conn"
 	"frp/utils/log"
+	"frp/utils/pcrypto"
 )
 
 type ProxyClient struct {
 	Name          string
-	Passwd    string
+	AuthToken     string
 	LocalIp       string
 	LocalPort     int64
+	UseEncryption bool
 }
 
 func (p *ProxyClient) GetLocalConn() (c *conn.Conn, err error) {
@@ -51,10 +55,13 @@ func (p *ProxyClient) GetRemoteConn(addr string, port int64) (c *conn.Conn, err
 		return
 	}
 
-	req := &msg.ClientCtlReq{
+	nowTime := time.Now().Unix()
-		Type:      consts.WorkConn,
+	authKey := pcrypto.GetAuthKey(p.Name + p.AuthToken + fmt.Sprintf("%d", nowTime))
+	req := &msg.ControlReq{
+		Type:      consts.NewWorkConn,
 		ProxyName: p.Name,
-		Passwd:    p.Passwd,
+		AuthKey:   authKey,
+		Timestamp: nowTime,
 	}
 
 	buf, _ := json.Marshal(req)
@@ -79,8 +86,13 @@ func (p *ProxyClient) StartTunnel(serverAddr string, serverPort int64) (err erro
 	}
 
 	// l means local, r means remote
-	log.Debug("Join two conns, (l[%s] r[%s]) (l[%s] r[%s])", localConn.GetLocalAddr(), localConn.GetRemoteAddr(),
+	log.Debug("Join two connections, (l[%s] r[%s]) (l[%s] r[%s])", localConn.GetLocalAddr(), localConn.GetRemoteAddr(),
 		remoteConn.GetLocalAddr(), remoteConn.GetRemoteAddr())
+	if p.UseEncryption {
+		go conn.JoinMore(localConn, remoteConn, p.AuthToken)
+	} else {
 		go conn.Join(localConn, remoteConn)
+	}
+
 	return nil
 }

src/frp/models/client/config.go

@@ -69,23 +69,32 @@ func LoadConf(confFile string) (err error) {
 		LogLevel = tmpStr
 	}
 
+	var authToken string
+	tmpStr, ok = conf.Get("common", "auth_token")
+	if ok {
+		authToken = tmpStr
+	} else {
+		return fmt.Errorf("auth_token not found")
+	}
+
 	// proxies
 	for name, section := range conf {
 		if name != "common" {
 			proxyClient := &ProxyClient{}
+			// name
 			proxyClient.Name = name
 
-			proxyClient.Passwd, ok = section["passwd"]
+			// auth_token
-			if !ok {
+			proxyClient.AuthToken = authToken
-				return fmt.Errorf("Parse ini file error: proxy [%s] no passwd found", proxyClient.Name)
-			}
 
+			// local_ip
 			proxyClient.LocalIp, ok = section["local_ip"]
 			if !ok {
 				// use 127.0.0.1 as default
 				proxyClient.LocalIp = "127.0.0.1"
 			}
 
+			// local_port
 			portStr, ok := section["local_port"]
 			if ok {
 				proxyClient.LocalPort, err = strconv.ParseInt(portStr, 10, 64)
@@ -96,6 +105,13 @@ func LoadConf(confFile string) (err error) {
 				return fmt.Errorf("Parse ini file error: proxy [%s] local_port not found", proxyClient.Name)
 			}
 
+			// use_encryption
+			proxyClient.UseEncryption = false
+			useEncryptionStr, ok := section["use_encryption"]
+			if ok && useEncryptionStr == "true" {
+				proxyClient.UseEncryption = true
+			}
+
 			ProxyClients[proxyClient.Name] = proxyClient
 		}
 	}

src/frp/models/consts/consts.go

@@ -18,20 +18,15 @@ package consts
 const (
 	Idle = iota
 	Working
+	Closed
 )
 
-// connection type
+// msg type
 const (
-	CtlConn = iota
+	NewCtlConn = iota
-	WorkConn
+	NewWorkConn
-)
+	NoticeUserConn
-
+	NewCtlConnRes
-// msg from client to server
+	HeartbeatReq
-const (
+	HeartbeatRes
-	CSHeartBeatReq = 1
-)
-
-// msg from server to client
-const (
-	SCHeartBeatRes = 100
 )

src/frp/models/msg/msg.go

@@ -19,16 +19,17 @@ type GeneralRes struct {
 	Msg  string `json:"msg"`
 }
 
-type ClientCtlReq struct {
+// messages between control connection of frpc and frps
+type ControlReq struct {
 	Type          int64  `json:"type"`
-	ProxyName string `json:"proxy_name"`
+	ProxyName     string `json:"proxy_name,omitempty"`
-	Passwd    string `json:"passwd"`
+	AuthKey       string `json:"auth_key, omitempty"`
+	UseEncryption bool   `json:"use_encryption, omitempty"`
+	Timestamp     int64  `json:"timestamp, omitempty"`
 }
 
-type ClientCtlRes struct {
+type ControlRes struct {
-	GeneralRes
-}
-
-type ServerCtlReq struct {
 	Type int64  `json:"type"`
+	Code int64  `json:"code"`
+	Msg  string `json:"msg"`
 }

src/frp/models/server/config.go

@@ -75,9 +75,9 @@ func LoadConf(confFile string) (err error) {
 			proxyServer := &ProxyServer{}
 			proxyServer.Name = name
 
-			proxyServer.Passwd, ok = section["passwd"]
+			proxyServer.AuthToken, ok = section["auth_token"]
 			if !ok {
-				return fmt.Errorf("Parse ini file error: proxy [%s] no passwd found", proxyServer.Name)
+				return fmt.Errorf("Parse ini file error: proxy [%s] no auth_token found", proxyServer.Name)
 			}
 
 			proxyServer.BindAddr, ok = section["bind_addr"]

src/frp/models/server/server.go

@@ -26,21 +26,22 @@ import (
 
 type ProxyServer struct {
 	Name          string
-	Passwd     string
+	AuthToken     string
+	UseEncryption bool
 	BindAddr      string
 	ListenPort    int64
 	Status        int64
 
 	listener     *conn.Listener  // accept new connection from remote users
 	ctlMsgChan   chan int64      // every time accept a new user conn, put "1" to the channel
-	cliConnChan  chan *conn.Conn // get client conns from control goroutine
+	workConnChan chan *conn.Conn // get new work conns from control goroutine
 	userConnList *list.List      // store user conns
 	mutex        sync.Mutex
 }
 
 func (p *ProxyServer) Init() {
 	p.Status = consts.Idle
-	p.cliConnChan = make(chan *conn.Conn)
+	p.workConnChan = make(chan *conn.Conn)
 	p.ctlMsgChan = make(chan int64)
 	p.userConnList = list.New()
 }
@@ -109,7 +110,7 @@ func (p *ProxyServer) Start() (err error) {
 	// start another goroutine for join two conns from client and user
 	go func() {
 		for {
-			cliConn, ok := <-p.cliConnChan
+			workConn, ok := <-p.workConnChan
 			if !ok {
 				return
 			}
@@ -122,7 +123,7 @@ func (p *ProxyServer) Start() (err error) {
 				userConn = element.Value.(*conn.Conn)
 				p.userConnList.Remove(element)
 			} else {
-				cliConn.Close()
+				workConn.Close()
 				p.Unlock()
 				continue
 			}
@@ -130,9 +131,14 @@ func (p *ProxyServer) Start() (err error) {
 
 			// msg will transfer to another without modifying
 			// l means local, r means remote
-			log.Debug("Join two conns, (l[%s] r[%s]) (l[%s] r[%s])", cliConn.GetLocalAddr(), cliConn.GetRemoteAddr(),
+			log.Debug("Join two connections, (l[%s] r[%s]) (l[%s] r[%s])", workConn.GetLocalAddr(), workConn.GetRemoteAddr(),
 				userConn.GetLocalAddr(), userConn.GetRemoteAddr())
-			go conn.Join(cliConn, userConn)
+
+			if p.UseEncryption {
+				go conn.JoinMore(userConn, workConn, p.AuthToken)
+			} else {
+				go conn.Join(userConn, workConn)
+			}
 		}
 	}()
 
@@ -141,13 +147,15 @@ func (p *ProxyServer) Start() (err error) {
 
 func (p *ProxyServer) Close() {
 	p.Lock()
-	p.Status = consts.Idle
+	if p.Status != consts.Closed {
+		p.Status = consts.Closed
 		if p.listener != nil {
 			p.listener.Close()
 		}
 		close(p.ctlMsgChan)
-	close(p.cliConnChan)
+		close(p.workConnChan)
 		p.userConnList = list.New()
+	}
 	p.Unlock()
 }
 
@@ -161,6 +169,6 @@ func (p *ProxyServer) WaitUserConn() (closeFlag bool) {
 	return
 }
 
-func (p *ProxyServer) GetNewCliConn(c *conn.Conn) {
+func (p *ProxyServer) RecvNewWorkConn(c *conn.Conn) {
-	p.cliConnChan <- c
+	p.workConnChan <- c
 }

src/frp/utils/conn/conn.go

@@ -22,6 +22,7 @@ import (
 	"sync"
 
 	"frp/utils/log"
+	"frp/utils/pcrypto"
 )
 
 type Listener struct {
@@ -127,6 +128,7 @@ func (c *Conn) ReadLine() (buff string, err error) {
 func (c *Conn) Write(content string) (err error) {
 	_, err = c.TcpConn.Write([]byte(content))
 	return err
+
 }
 
 func (c *Conn) Close() {
@@ -151,7 +153,7 @@ func Join(c1 *Conn, c2 *Conn) {
 		var err error
 		_, err = io.Copy(to.TcpConn, from.TcpConn)
 		if err != nil {
-			log.Warn("join conns error, %v", err)
+			log.Warn("join connections error, %v", err)
 		}
 	}
 
@@ -161,3 +163,93 @@ func Join(c1 *Conn, c2 *Conn) {
 	wait.Wait()
 	return
 }
+
+// messages from c1 to c2 will be encrypted
+// and from c2 to c1 will be decrypted
+func JoinMore(c1 *Conn, c2 *Conn, cryptKey string) {
+	var wait sync.WaitGroup
+	encryptPipe := func(from *Conn, to *Conn, key string) {
+		defer from.Close()
+		defer to.Close()
+		defer wait.Done()
+
+		// we don't care about errors here
+		PipeEncrypt(from.TcpConn, to.TcpConn, key)
+	}
+
+	decryptPipe := func(to *Conn, from *Conn, key string) {
+		defer from.Close()
+		defer to.Close()
+		defer wait.Done()
+
+		// we don't care about errors here
+		PipeDecrypt(to.TcpConn, from.TcpConn, key)
+	}
+
+	wait.Add(2)
+	go encryptPipe(c1, c2, cryptKey)
+	go decryptPipe(c2, c1, cryptKey)
+	wait.Wait()
+	log.Debug("One tunnel stopped")
+	return
+}
+
+// decrypt msg from reader, then write into writer
+func PipeDecrypt(r net.Conn, w net.Conn, key string) error {
+	laes := new(pcrypto.Pcrypto)
+	if err := laes.Init([]byte(key)); err != nil {
+		log.Error("Pcrypto Init error: %v", err)
+		return fmt.Errorf("Pcrypto Init error: %v", err)
+	}
+
+	nreader := bufio.NewReader(r)
+	for {
+		buf, err := nreader.ReadBytes('\n')
+		if err != nil {
+			return err
+		}
+
+		res, err := laes.Decrypt(buf)
+		if err != nil {
+			log.Error("Decrypt [%s] error, %v", string(buf), err)
+			return fmt.Errorf("Decrypt [%s] error: %v", string(buf), err)
+		}
+
+		_, err = w.Write(res)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// recvive msg from reader, then encrypt msg into write
+func PipeEncrypt(r net.Conn, w net.Conn, key string) error {
+	laes := new(pcrypto.Pcrypto)
+	if err := laes.Init([]byte(key)); err != nil {
+		log.Error("Pcrypto Init error: %v", err)
+		return fmt.Errorf("Pcrypto Init error: %v", err)
+	}
+
+	nreader := bufio.NewReader(r)
+	buf := make([]byte, 10*1024)
+
+	for {
+		n, err := nreader.Read(buf)
+		if err != nil {
+			return err
+		}
+		res, err := laes.Encrypt(buf[:n])
+		if err != nil {
+			log.Error("Encrypt error: %v", err)
+			return fmt.Errorf("Encrypt error: %v", err)
+		}
+
+		res = append(res, '\n')
+		_, err = w.Write(res)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}

src/frp/utils/pcrypto/pcrypto.go

@@ -19,6 +19,7 @@ import (
 	"compress/gzip"
 	"crypto/aes"
 	"crypto/cipher"
+	"crypto/md5"
 	"encoding/base64"
 	"encoding/hex"
 	"errors"
@@ -33,43 +34,40 @@ type Pcrypto struct {
 
 func (pc *Pcrypto) Init(key []byte) error {
 	var err error
-	pc.pkey = PKCS7Padding(key, aes.BlockSize)
+	pc.pkey = pKCS7Padding(key, aes.BlockSize)
 	pc.paes, err = aes.NewCipher(pc.pkey)
 
 	return err
 }
 
-func (pc *Pcrypto) Encrypto(src []byte) ([]byte, error) {
+func (pc *Pcrypto) Encrypt(src []byte) ([]byte, error) {
+	// gzip
+	var zbuf bytes.Buffer
+	zwr, err := gzip.NewWriterLevel(&zbuf, -1)
+	if err != nil {
+		return nil, err
+	}
+	defer zwr.Close()
+	zwr.Write(src)
+	zwr.Flush()
+
 	// aes
-	src = PKCS7Padding(src, aes.BlockSize)
+	src = pKCS7Padding(zbuf.Bytes(), aes.BlockSize)
 	blockMode := cipher.NewCBCEncrypter(pc.paes, pc.pkey)
 	crypted := make([]byte, len(src))
 	blockMode.CryptBlocks(crypted, src)
 
-	// gzip
-	var zbuf bytes.Buffer
-	zwr := gzip.NewWriter(&zbuf)
-	defer zwr.Close()
-	zwr.Write(crypted)
-	zwr.Flush()
-
 	// base64
-	return []byte(base64.StdEncoding.EncodeToString(zbuf.Bytes())), nil
+	return []byte(base64.StdEncoding.EncodeToString(crypted)), nil
 }
 
-func (pc *Pcrypto) Decrypto(str []byte) ([]byte, error) {
+func (pc *Pcrypto) Decrypt(str []byte) ([]byte, error) {
 	// base64
 	data, err := base64.StdEncoding.DecodeString(string(str))
 	if err != nil {
 		return nil, err
 	}
 
-	// gunzip
-	zbuf := bytes.NewBuffer(data)
-	zrd, _ := gzip.NewReader(zbuf)
-	defer zrd.Close()
-	data, _ = ioutil.ReadAll(zrd)
-
 	// aes
 	decryptText, err := hex.DecodeString(fmt.Sprintf("%x", data))
 	if err != nil {
@@ -83,19 +81,35 @@ func (pc *Pcrypto) Decrypto(str []byte) ([]byte, error) {
 	blockMode := cipher.NewCBCDecrypter(pc.paes, pc.pkey)
 
 	blockMode.CryptBlocks(decryptText, decryptText)
-	decryptText = PKCS7UnPadding(decryptText)
+	decryptText = pKCS7UnPadding(decryptText)
 
-	return decryptText, nil
+	// gunzip
+	zbuf := bytes.NewBuffer(decryptText)
+	zrd, err := gzip.NewReader(zbuf)
+	if err != nil {
+		return nil, err
+	}
+	defer zrd.Close()
+	data, _ = ioutil.ReadAll(zrd)
+
+	return data, nil
 }
 
-func PKCS7Padding(ciphertext []byte, blockSize int) []byte {
+func pKCS7Padding(ciphertext []byte, blockSize int) []byte {
 	padding := blockSize - len(ciphertext)%blockSize
 	padtext := bytes.Repeat([]byte{byte(padding)}, padding)
 	return append(ciphertext, padtext...)
 }
 
-func PKCS7UnPadding(origData []byte) []byte {
+func pKCS7UnPadding(origData []byte) []byte {
 	length := len(origData)
 	unpadding := int(origData[length-1])
 	return origData[:(length - unpadding)]
 }
+
+func GetAuthKey(str string) (authKey string) {
+	md5Ctx := md5.New()
+	md5Ctx.Write([]byte(str))
+	md5Str := md5Ctx.Sum(nil)
+	return hex.EncodeToString(md5Str)
+}

src/frp/utils/pcrypto/pcrypto_test.go

@@ -15,15 +15,14 @@
 package pcrypto
 
 import (
-	"crypto/aes"
 	"fmt"
 	"testing"
 )
 
-func TestEncrypto(t *testing.T) {
+func TestEncrypt(t *testing.T) {
 	pp := new(Pcrypto)
 	pp.Init([]byte("Hana"))
-	res, err := pp.Encrypto([]byte("Just One Test!"))
+	res, err := pp.Encrypt([]byte("Just One Test!"))
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -31,31 +30,18 @@ func TestEncrypto(t *testing.T) {
 	fmt.Printf("[%x]\n", res)
 }
 
-func TestDecrypto(t *testing.T) {
+func TestDecrypt(t *testing.T) {
 	pp := new(Pcrypto)
 	pp.Init([]byte("Hana"))
-	res, err := pp.Encrypto([]byte("Just One Test!"))
+	res, err := pp.Encrypt([]byte("Just One Test!"))
 	if err != nil {
 		t.Fatal(err)
 	}
 
-	res, err = pp.Decrypto(res)
+	res, err = pp.Decrypt(res)
 	if err != nil {
 		t.Fatal(err)
 	}
 
 	fmt.Printf("[%s]\n", string(res))
 }
-
-func TestPKCS7Padding(t *testing.T) {
-	ltt := []byte("Test_PKCS7Padding")
-	ltt = PKCS7Padding(ltt, aes.BlockSize)
-	// fmt.Printf("[%x]\n", (ltt))
-}
-
-func TestPKCS7UnPadding(t *testing.T) {
-	ltt := []byte("Test_PKCS7Padding")
-	ltt = PKCS7Padding(ltt, aes.BlockSize)
-	ltt = PKCS7UnPadding(ltt)
-	// fmt.Printf("[%x]\n", ltt)
-}

src/frp/utils/version/version.go

@@ -19,7 +19,7 @@ import (
 	"strings"
 )
 
-var version string = "0.2.0"
+var version string = "0.3.0"
 
 func Full() string {
 	return version