Exemple #1
0
func MarshalCommand(command interface{}, writer io.Writer) error {
	if command == nil {
		return ErrUnknownCommand
	}

	var cmdId byte
	var factory CommandFactory
	switch command.(type) {
	case *protocol.CommandSwitchAccount:
		factory = new(CommandSwitchAccountFactory)
		cmdId = 1
	default:
		return ErrUnknownCommand
	}

	buffer := alloc.NewLocalBuffer(512).Clear()
	defer buffer.Release()

	err := factory.Marshal(command, buffer)
	if err != nil {
		return err
	}

	auth := Authenticate(buffer.Value)
	len := buffer.Len() + 4
	if len > 255 {
		return ErrCommandTooLarge
	}

	writer.Write([]byte{cmdId, byte(len), byte(auth >> 24), byte(auth >> 16), byte(auth >> 8), byte(auth)})
	writer.Write(buffer.Value)
	return nil
}
Exemple #2
0
func (this *BufferedSegmentWriter) Write(seg Segment) {
	this.Lock()
	defer this.Unlock()

	nBytes := seg.ByteSize()
	if uint32(this.buffer.Len()+nBytes) > this.mtu {
		this.FlushWithoutLock()
	}

	if this.buffer == nil {
		this.buffer = alloc.NewLocalBuffer(2048).Clear()
	}

	this.buffer.Value = seg.Bytes(this.buffer.Value)
}
Exemple #3
0
func (this *Connection) FetchInputFrom(conn io.Reader) {
	go func() {
		payload := alloc.NewLocalBuffer(2048)
		defer payload.Release()
		for {
			payload.Reset()
			nBytes, err := conn.Read(payload.Value)
			if err != nil {
				return
			}
			payload.Slice(0, nBytes)
			if this.block.Open(payload) {
				this.Input(payload.Value)
			}
		}
	}()
}
Exemple #4
0
func (this *VMessInboundHandler) HandleConnection(connection internet.Connection) {
	defer connection.Close()

	if !this.accepting {
		return
	}

	connReader := v2net.NewTimeOutReader(8, connection)
	defer connReader.Release()

	reader := v2io.NewBufferedReader(connReader)
	defer reader.Release()

	this.RLock()
	if !this.accepting {
		this.RUnlock()
		return
	}
	session := encoding.NewServerSession(this.clients)
	defer session.Release()

	request, err := session.DecodeRequestHeader(reader)
	this.RUnlock()

	if err != nil {
		if err != io.EOF {
			log.Access(connection.RemoteAddr(), "", log.AccessRejected, err)
			log.Warning("VMessIn: Invalid request from ", connection.RemoteAddr(), ": ", err)
		}
		connection.SetReusable(false)
		return
	}
	log.Access(connection.RemoteAddr(), request.Destination(), log.AccessAccepted, "")
	log.Info("VMessIn: Received request for ", request.Destination())

	connection.SetReusable(request.Option.Has(protocol.RequestOptionConnectionReuse))

	ray := this.packetDispatcher.DispatchToOutbound(request.Destination())
	input := ray.InboundInput()
	output := ray.InboundOutput()
	defer input.Close()
	defer output.Release()

	var readFinish sync.Mutex
	readFinish.Lock()

	userSettings := protocol.GetUserSettings(request.User.Level)
	connReader.SetTimeOut(userSettings.PayloadReadTimeout)
	reader.SetCached(false)

	go func() {
		bodyReader := session.DecodeRequestBody(reader)
		var requestReader v2io.Reader
		if request.Option.Has(protocol.RequestOptionChunkStream) {
			requestReader = vmessio.NewAuthChunkReader(bodyReader)
		} else {
			requestReader = v2io.NewAdaptiveReader(bodyReader)
		}
		err := v2io.Pipe(requestReader, input)
		if err != io.EOF {
			connection.SetReusable(false)
		}

		requestReader.Release()
		input.Close()
		readFinish.Unlock()
	}()

	writer := v2io.NewBufferedWriter(connection)
	defer writer.Release()

	response := &protocol.ResponseHeader{
		Command: this.generateCommand(request),
	}

	if connection.Reusable() {
		response.Option.Set(protocol.ResponseOptionConnectionReuse)
	}

	session.EncodeResponseHeader(response, writer)

	bodyWriter := session.EncodeResponseBody(writer)
	var v2writer v2io.Writer = v2io.NewAdaptiveWriter(bodyWriter)
	if request.Option.Has(protocol.RequestOptionChunkStream) {
		v2writer = vmessio.NewAuthChunkWriter(v2writer)
	}

	// Optimize for small response packet
	if data, err := output.Read(); err == nil {
		if err := v2writer.Write(data); err != nil {
			connection.SetReusable(false)
		}

		writer.SetCached(false)

		err = v2io.Pipe(output, v2writer)
		if err != io.EOF {
			connection.SetReusable(false)
		}

	}
	output.Release()
	if request.Option.Has(protocol.RequestOptionChunkStream) {
		if err := v2writer.Write(alloc.NewLocalBuffer(32).Clear()); err != nil {
			connection.SetReusable(false)
		}
	}
	writer.Flush()
	v2writer.Release()

	readFinish.Lock()
}
Exemple #5
0
func (this *HTTPResponse) WriteTo(writer v2io.Writer) {
	writer.Write(alloc.NewLocalBuffer(512).Clear().AppendString(http403response))
}