コード例 #1
1
ファイル: socks.go プロジェクト: kennshi/v2ray-core
func (server *SocksServer) handleSocks4(reader io.Reader, writer io.Writer, auth protocol.Socks4AuthenticationRequest) error {
	result := protocol.Socks4RequestGranted
	if auth.Command == protocol.CmdBind {
		result = protocol.Socks4RequestRejected
	}
	socks4Response := protocol.NewSocks4AuthenticationResponse(result, auth.Port, auth.IP[:])

	responseBuffer := alloc.NewSmallBuffer().Clear()
	socks4Response.Write(responseBuffer)
	writer.Write(responseBuffer.Value)
	responseBuffer.Release()

	if result == protocol.Socks4RequestRejected {
		log.Warning("Unsupported socks 4 command %d", auth.Command)
		return UnsupportedSocksCommand
	}

	dest := v2net.NewTCPDestination(v2net.IPAddress(auth.IP[:], auth.Port))
	data, err := v2net.ReadFrom(reader, nil)
	if err != nil {
		return err
	}

	packet := v2net.NewPacket(dest, data, true)
	server.transport(reader, writer, packet)
	return nil
}
コード例 #2
0
ファイル: socks.go プロジェクト: ben0x007/v2ray-core
func (this *SocksServer) handleSocks4(reader io.Reader, writer io.Writer, auth protocol.Socks4AuthenticationRequest) error {
	result := protocol.Socks4RequestGranted
	if auth.Command == protocol.CmdBind {
		result = protocol.Socks4RequestRejected
	}
	socks4Response := protocol.NewSocks4AuthenticationResponse(result, auth.Port, auth.IP[:])

	responseBuffer := alloc.NewSmallBuffer().Clear()
	socks4Response.Write(responseBuffer)
	writer.Write(responseBuffer.Value)
	responseBuffer.Release()

	if result == protocol.Socks4RequestRejected {
		log.Warning("Socks: Unsupported socks 4 command ", auth.Command)
		return ErrorUnsupportedSocksCommand
	}

	dest := v2net.TCPDestination(v2net.IPAddress(auth.IP[:]), auth.Port)
	packet := v2net.NewPacket(dest, nil, true)
	this.transport(reader, writer, packet)
	return nil
}
コード例 #3
0
ファイル: socks.go プロジェクト: iusky/v2ray-core
func (server *SocksServer) handleSocks4(reader io.Reader, writer io.Writer, auth protocol.Socks4AuthenticationRequest) error {
	result := protocol.Socks4RequestGranted
	if auth.Command == protocol.CmdBind {
		result = protocol.Socks4RequestRejected
	}
	socks4Response := protocol.NewSocks4AuthenticationResponse(result, auth.Port, auth.IP[:])
	writer.Write(socks4Response.ToBytes(nil))

	if result == protocol.Socks4RequestRejected {
		return errors.NewInvalidOperationError("Socks4 command " + strconv.Itoa(int(auth.Command)))
	}

	dest := v2net.NewTCPDestination(v2net.IPAddress(auth.IP[:], auth.Port))
	data, err := v2net.ReadFrom(reader)
	if err != nil {
		return err
	}

	packet := v2net.NewPacket(dest, data, true)
	server.transport(reader, writer, packet)
	return nil
}
コード例 #4
0
ファイル: socks.go プロジェクト: wangyou/v2ray-core
func (this *SocksServer) handleSocks4(reader *v2io.BufferedReader, writer *v2io.BufferedWriter, auth protocol.Socks4AuthenticationRequest) error {
	result := protocol.Socks4RequestGranted
	if auth.Command == protocol.CmdBind {
		result = protocol.Socks4RequestRejected
	}
	socks4Response := protocol.NewSocks4AuthenticationResponse(result, auth.Port, auth.IP[:])

	socks4Response.Write(writer)

	if result == protocol.Socks4RequestRejected {
		log.Warning("Socks: Unsupported socks 4 command ", auth.Command)
		return ErrorUnsupportedSocksCommand
	}

	reader.SetCached(false)
	writer.SetCached(false)

	dest := v2net.TCPDestination(v2net.IPAddress(auth.IP[:]), auth.Port)
	packet := v2net.NewPacket(dest, nil, true)
	this.transport(reader, writer, packet)
	return nil
}
コード例 #5
0
ファイル: socks.go プロジェクト: hxford/v2ray-core
func (server *SocksServer) HandleConnection(connection net.Conn) error {
	defer connection.Close()

	reader := connection.(io.Reader)

	auth, auth4, err := protocol.ReadAuthentication(reader)
	if err != nil && err != protocol.ErrorSocksVersion4 {
		log.Error("Error on reading authentication: %v", err)
		return err
	}

	var dest v2net.Destination

	// TODO refactor this part
	if err == protocol.ErrorSocksVersion4 {
		result := protocol.Socks4RequestGranted
		if auth4.Command == protocol.CmdBind {
			result = protocol.Socks4RequestRejected
		}
		socks4Response := protocol.NewSocks4AuthenticationResponse(result, auth4.Port, auth4.IP[:])
		protocol.WriteSocks4AuthenticationResponse(connection, socks4Response)

		if result == protocol.Socks4RequestRejected {
			return ErrorCommandNotSupported
		}

		dest = v2net.NewTCPDestination(v2net.IPAddress(auth4.IP[:], auth4.Port))
	} else {
		expectedAuthMethod := protocol.AuthNotRequired
		if server.config.AuthMethod == JsonAuthMethodUserPass {
			expectedAuthMethod = protocol.AuthUserPass
		}

		if !auth.HasAuthMethod(expectedAuthMethod) {
			authResponse := protocol.NewAuthenticationResponse(protocol.AuthNoMatchingMethod)
			err = protocol.WriteAuthentication(connection, authResponse)
			if err != nil {
				log.Error("Error on socksio write authentication: %v", err)
				return err
			}
			log.Warning("Client doesn't support allowed any auth methods.")
			return ErrorAuthenticationFailed
		}

		authResponse := protocol.NewAuthenticationResponse(expectedAuthMethod)
		err = protocol.WriteAuthentication(connection, authResponse)
		if err != nil {
			log.Error("Error on socksio write authentication: %v", err)
			return err
		}
		if server.config.AuthMethod == JsonAuthMethodUserPass {
			upRequest, err := protocol.ReadUserPassRequest(reader)
			if err != nil {
				log.Error("Failed to read username and password: %v", err)
				return err
			}
			status := byte(0)
			if !upRequest.IsValid(server.config.Username, server.config.Password) {
				status = byte(0xFF)
			}
			upResponse := protocol.NewSocks5UserPassResponse(status)
			err = protocol.WriteUserPassResponse(connection, upResponse)
			if err != nil {
				log.Error("Error on socksio write user pass response: %v", err)
				return err
			}
			if status != byte(0) {
				return ErrorInvalidUser
			}
		}

		request, err := protocol.ReadRequest(reader)
		if err != nil {
			log.Error("Error on reading socks request: %v", err)
			return err
		}

		response := protocol.NewSocks5Response()

		if request.Command == protocol.CmdBind || request.Command == protocol.CmdUdpAssociate {
			response := protocol.NewSocks5Response()
			response.Error = protocol.ErrorCommandNotSupported
			err = protocol.WriteResponse(connection, response)
			if err != nil {
				log.Error("Error on socksio write response: %v", err)
				return err
			}
			log.Warning("Unsupported socks command %d", request.Command)
			return ErrorCommandNotSupported
		}

		response.Error = protocol.ErrorSuccess
		response.Port = request.Port
		response.AddrType = request.AddrType
		switch response.AddrType {
		case protocol.AddrTypeIPv4:
			copy(response.IPv4[:], request.IPv4[:])
		case protocol.AddrTypeIPv6:
			copy(response.IPv6[:], request.IPv6[:])
		case protocol.AddrTypeDomain:
			response.Domain = request.Domain
		}
		err = protocol.WriteResponse(connection, response)
		if err != nil {
			log.Error("Error on socksio write response: %v", err)
			return err
		}

		dest = request.Destination()
	}

	ray := server.vPoint.NewInboundConnectionAccepted(dest)
	input := ray.InboundInput()
	output := ray.InboundOutput()
	readFinish := make(chan bool)
	writeFinish := make(chan bool)

	go server.dumpInput(reader, input, readFinish)
	go server.dumpOutput(connection, output, writeFinish)
	<-writeFinish

	return nil
}
コード例 #6
0
ファイル: socks.go プロジェクト: jessxuan/v2ray-core
func (server *SocksServer) HandleConnection(connection net.Conn) error {
	defer connection.Close()

	reader := v2net.NewTimeOutReader(4, connection)

	auth, auth4, err := protocol.ReadAuthentication(reader)
	if err != nil && !errors.HasCode(err, 1000) {
		log.Error("Socks failed to read authentication: %v", err)
		return err
	}

	var dest v2net.Destination

	// TODO refactor this part
	if errors.HasCode(err, 1000) {
		result := protocol.Socks4RequestGranted
		if auth4.Command == protocol.CmdBind {
			result = protocol.Socks4RequestRejected
		}
		socks4Response := protocol.NewSocks4AuthenticationResponse(result, auth4.Port, auth4.IP[:])
		connection.Write(socks4Response.ToBytes(nil))

		if result == protocol.Socks4RequestRejected {
			return errors.NewInvalidOperationError("Socks4 command " + strconv.Itoa(int(auth4.Command)))
		}

		dest = v2net.NewTCPDestination(v2net.IPAddress(auth4.IP[:], auth4.Port))
	} else {
		expectedAuthMethod := protocol.AuthNotRequired
		if server.config.IsPassword() {
			expectedAuthMethod = protocol.AuthUserPass
		}

		if !auth.HasAuthMethod(expectedAuthMethod) {
			authResponse := protocol.NewAuthenticationResponse(protocol.AuthNoMatchingMethod)
			err = protocol.WriteAuthentication(connection, authResponse)
			if err != nil {
				log.Error("Socks failed to write authentication: %v", err)
				return err
			}
			log.Warning("Socks client doesn't support allowed any auth methods.")
			return errors.NewInvalidOperationError("Unsupported auth methods.")
		}

		authResponse := protocol.NewAuthenticationResponse(expectedAuthMethod)
		err = protocol.WriteAuthentication(connection, authResponse)
		if err != nil {
			log.Error("Socks failed to write authentication: %v", err)
			return err
		}
		if server.config.IsPassword() {
			upRequest, err := protocol.ReadUserPassRequest(reader)
			if err != nil {
				log.Error("Socks failed to read username and password: %v", err)
				return err
			}
			status := byte(0)
			if !upRequest.IsValid(server.config.Username, server.config.Password) {
				status = byte(0xFF)
			}
			upResponse := protocol.NewSocks5UserPassResponse(status)
			err = protocol.WriteUserPassResponse(connection, upResponse)
			if err != nil {
				log.Error("Socks failed to write user pass response: %v", err)
				return err
			}
			if status != byte(0) {
				err = errors.NewAuthenticationError(upRequest.AuthDetail())
				log.Warning(err.Error())
				return err
			}
		}

		request, err := protocol.ReadRequest(reader)
		if err != nil {
			log.Error("Socks failed to read request: %v", err)
			return err
		}

		response := protocol.NewSocks5Response()

		if request.Command == protocol.CmdBind || request.Command == protocol.CmdUdpAssociate {
			response := protocol.NewSocks5Response()
			response.Error = protocol.ErrorCommandNotSupported
			err = protocol.WriteResponse(connection, response)
			if err != nil {
				log.Error("Socks failed to write response: %v", err)
				return err
			}
			log.Warning("Unsupported socks command %d", request.Command)
			return errors.NewInvalidOperationError("Socks command " + strconv.Itoa(int(request.Command)))
		}

		response.Error = protocol.ErrorSuccess
		response.Port = request.Port
		response.AddrType = request.AddrType
		switch response.AddrType {
		case protocol.AddrTypeIPv4:
			copy(response.IPv4[:], request.IPv4[:])
		case protocol.AddrTypeIPv6:
			copy(response.IPv6[:], request.IPv6[:])
		case protocol.AddrTypeDomain:
			response.Domain = request.Domain
		}
		err = protocol.WriteResponse(connection, response)
		if err != nil {
			log.Error("Socks failed to write response: %v", err)
			return err
		}

		dest = request.Destination()
	}

	ray := server.vPoint.DispatchToOutbound(v2net.NewTCPPacket(dest))
	input := ray.InboundInput()
	output := ray.InboundOutput()
	var readFinish, writeFinish sync.Mutex
	readFinish.Lock()
	writeFinish.Lock()

	go dumpInput(reader, input, &readFinish)
	go dumpOutput(connection, output, &writeFinish)
	writeFinish.Lock()

	return nil
}