Пример #1
0
func TestRequestSerialization(t *testing.T) {
	v2testing.Current(t)

	user := protocol.NewUser(
		protocol.NewID(uuid.New()),
		protocol.UserLevelUntrusted,
		0,
		"*****@*****.**")

	expectedRequest := &protocol.RequestHeader{
		Version: 1,
		User:    user,
		Command: protocol.RequestCommandTCP,
		Option:  protocol.RequestOption(0),
		Address: v2net.DomainAddress("www.v2ray.com"),
		Port:    v2net.Port(443),
	}

	buffer := alloc.NewBuffer().Clear()
	client := NewClientSession(protocol.DefaultIDHash)
	client.EncodeRequestHeader(expectedRequest, buffer)

	userValidator := protocol.NewTimedUserValidator(protocol.DefaultIDHash)
	userValidator.Add(user)

	server := NewServerSession(userValidator)
	actualRequest, err := server.DecodeRequestHeader(buffer)
	assert.Error(err).IsNil()

	assert.Byte(expectedRequest.Version).Equals(actualRequest.Version)
	assert.Byte(byte(expectedRequest.Command)).Equals(byte(actualRequest.Command))
	assert.Byte(byte(expectedRequest.Option)).Equals(byte(actualRequest.Option))
	netassert.Address(expectedRequest.Address).Equals(actualRequest.Address)
	netassert.Port(expectedRequest.Port).Equals(actualRequest.Port)
}
Пример #2
0
func (this *ServerSession) DecodeRequestHeader(reader io.Reader) (*protocol.RequestHeader, error) {
	buffer := alloc.NewSmallBuffer()
	defer buffer.Release()

	_, err := io.ReadFull(reader, buffer.Value[:protocol.IDBytesLen])
	if err != nil {
		log.Error("Raw: Failed to read request header: ", err)
		return nil, err
	}

	user, timestamp, valid := this.userValidator.Get(buffer.Value[:protocol.IDBytesLen])
	if !valid {
		return nil, protocol.ErrorInvalidUser
	}

	timestampHash := md5.New()
	timestampHash.Write(hashTimestamp(timestamp))
	iv := timestampHash.Sum(nil)
	aesStream := crypto.NewAesDecryptionStream(user.ID.CmdKey(), iv)
	decryptor := crypto.NewCryptionReader(aesStream, reader)

	nBytes, err := io.ReadFull(decryptor, buffer.Value[:41])
	if err != nil {
		log.Debug("Raw: Failed to read request header (", nBytes, " bytes): ", err)
		return nil, err
	}
	bufferLen := nBytes

	request := &protocol.RequestHeader{
		User:    user,
		Version: buffer.Value[0],
	}

	if request.Version != Version {
		log.Warning("Raw: Invalid protocol version ", request.Version)
		return nil, protocol.ErrorInvalidVersion
	}

	this.requestBodyIV = append([]byte(nil), buffer.Value[1:17]...)   // 16 bytes
	this.requestBodyKey = append([]byte(nil), buffer.Value[17:33]...) // 16 bytes
	this.responseHeader = buffer.Value[33]                            // 1 byte
	request.Option = protocol.RequestOption(buffer.Value[34])         // 1 byte + 2 bytes reserved
	request.Command = protocol.RequestCommand(buffer.Value[37])

	request.Port = v2net.PortFromBytes(buffer.Value[38:40])

	switch buffer.Value[40] {
	case AddrTypeIPv4:
		nBytes, err = io.ReadFull(decryptor, buffer.Value[41:45]) // 4 bytes
		bufferLen += 4
		if err != nil {
			log.Debug("VMess: Failed to read target IPv4 (", nBytes, " bytes): ", err)
			return nil, err
		}
		request.Address = v2net.IPAddress(buffer.Value[41:45])
	case AddrTypeIPv6:
		nBytes, err = io.ReadFull(decryptor, buffer.Value[41:57]) // 16 bytes
		bufferLen += 16
		if err != nil {
			log.Debug("VMess: Failed to read target IPv6 (", nBytes, " bytes): ", nBytes, err)
			return nil, err
		}
		request.Address = v2net.IPAddress(buffer.Value[41:57])
	case AddrTypeDomain:
		nBytes, err = io.ReadFull(decryptor, buffer.Value[41:42])
		if err != nil {
			log.Debug("VMess: Failed to read target domain (", nBytes, " bytes): ", nBytes, err)
			return nil, err
		}
		domainLength := int(buffer.Value[41])
		if domainLength == 0 {
			return nil, transport.ErrorCorruptedPacket
		}
		nBytes, err = io.ReadFull(decryptor, buffer.Value[42:42+domainLength])
		if err != nil {
			log.Debug("VMess: Failed to read target domain (", nBytes, " bytes): ", nBytes, err)
			return nil, err
		}
		bufferLen += 1 + domainLength
		domainBytes := append([]byte(nil), buffer.Value[42:42+domainLength]...)
		request.Address = v2net.DomainAddress(string(domainBytes))
	}

	nBytes, err = io.ReadFull(decryptor, buffer.Value[bufferLen:bufferLen+4])
	if err != nil {
		log.Debug("VMess: Failed to read checksum (", nBytes, " bytes): ", nBytes, err)
		return nil, err
	}

	fnv1a := fnv.New32a()
	fnv1a.Write(buffer.Value[:bufferLen])
	actualHash := fnv1a.Sum32()
	expectedHash := serial.BytesLiteral(buffer.Value[bufferLen : bufferLen+4]).Uint32Value()

	if actualHash != expectedHash {
		return nil, transport.ErrorCorruptedPacket
	}

	return request, nil
}