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|
/*
* Copyright (c) 2014, Ford Motor Company
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following
* disclaimer in the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of the Ford Motor Company nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdint.h>
#include <memory.h>
#include <new>
#include <memory>
#include <cstring>
#include <limits>
#include "protocol/common.h"
#include "protocol_handler/protocol_packet.h"
#include "utils/macro.h"
#include "utils/byte_order.h"
namespace protocol_handler {
CREATE_LOGGERPTR_GLOBAL(logger_, "ProtocolHandler")
ProtocolPacket::ProtocolData::ProtocolData() : data(NULL), totalDataBytes(0u) {}
ProtocolPacket::ProtocolData::~ProtocolData() {
delete[] data;
}
ProtocolPacket::ProtocolVersion::ProtocolVersion()
: majorVersion(0), minorVersion(0), patchVersion(0) {}
ProtocolPacket::ProtocolVersion::ProtocolVersion(uint8_t majorVersion,
uint8_t minorVersion,
uint8_t patchVersion)
: majorVersion(majorVersion)
, minorVersion(minorVersion)
, patchVersion(patchVersion) {}
ProtocolPacket::ProtocolVersion::ProtocolVersion(ProtocolVersion& other) {
this->majorVersion = other.majorVersion;
this->minorVersion = other.minorVersion;
this->patchVersion = other.patchVersion;
}
ProtocolPacket::ProtocolVersion::ProtocolVersion(std::string versionString)
: majorVersion(0), minorVersion(0), patchVersion(0) {
unsigned int majorInt, minorInt, patchInt;
int readElements = sscanf(
versionString.c_str(), "%u.%u.%u", &majorInt, &minorInt, &patchInt);
if (readElements != 3) {
LOG4CXX_WARN(logger_,
"Error while parsing version string: " << versionString);
} else {
majorVersion = static_cast<uint8_t>(majorInt);
minorVersion = static_cast<uint8_t>(minorInt);
patchVersion = static_cast<uint8_t>(patchInt);
}
}
std::string ProtocolPacket::ProtocolVersion::to_string() {
char versionString[256];
snprintf(versionString,
255,
"%u.%u.%u",
static_cast<unsigned int>(majorVersion),
static_cast<unsigned int>(minorVersion),
static_cast<unsigned int>(patchVersion));
return std::string(versionString);
}
ProtocolPacket::ProtocolHeader::ProtocolHeader()
: version(0x00)
, protection_flag(PROTECTION_OFF)
, frameType(0x00)
, serviceType(0x00)
, frameData(0x00)
, sessionId(0x00)
, dataSize(0x00)
, messageId(0x00) {}
ProtocolPacket::ProtocolHeader::ProtocolHeader(uint8_t version,
bool protection,
uint8_t frameType,
uint8_t serviceType,
uint8_t frameData,
uint8_t sessionID,
uint32_t dataSize,
uint32_t messageID)
: version(version)
, protection_flag(protection)
, frameType(frameType)
, serviceType(serviceType)
, frameData(frameData)
, sessionId(sessionID)
, dataSize(dataSize)
, messageId(messageID) {}
inline uint32_t read_be_uint32(const uint8_t* const data) {
// Int value read byte per byte
// reintercast for non-4 byte address alignment lead to UB on arm platform
uint32_t value = data[3];
value += (data[2] << 8);
value += (data[1] << 16);
value += (data[0] << 24);
return value;
}
void ProtocolPacket::ProtocolHeader::deserialize(const uint8_t* message,
const size_t messageSize) {
LOG4CXX_AUTO_TRACE(logger_);
DCHECK_OR_RETURN_VOID(message);
if (messageSize < PROTOCOL_HEADER_V1_SIZE) {
LOG4CXX_DEBUG(logger_,
"Message size less " << PROTOCOL_HEADER_V1_SIZE << " bytes");
return;
}
// first 4 bits
version = message[0] >> 4u;
// 5th bit
protection_flag = message[0] & 0x08u;
// 6-8 bits
frameType = message[0] & 0x07u;
serviceType = message[1];
frameData = message[2];
sessionId = message[3];
// FIXME(EZamakhov): usage for FirstFrame message
dataSize = read_be_uint32(message + 4);
switch (version) {
case PROTOCOL_VERSION_2:
case PROTOCOL_VERSION_3:
case PROTOCOL_VERSION_4:
case PROTOCOL_VERSION_5: {
if (messageSize < PROTOCOL_HEADER_V2_SIZE) {
LOG4CXX_DEBUG(logger_,
"Message size less " << PROTOCOL_HEADER_V2_SIZE
<< " bytes");
return;
}
messageId = read_be_uint32(message + 8);
} break;
default:
LOG4CXX_WARN(logger_, "Unknown version:" << static_cast<int>(version));
messageId = 0;
break;
}
}
ProtocolPacket::ProtocolHeaderValidator::ProtocolHeaderValidator()
: max_payload_size_(std::numeric_limits<size_t>::max())
, max_control_payload_size_(0)
, max_rpc_payload_size_(0)
, max_audio_payload_size_(0)
, max_video_payload_size_(0) {}
void ProtocolPacket::ProtocolHeaderValidator::set_max_payload_size(
const size_t max_payload_size) {
LOG4CXX_DEBUG(logger_, "New maximum payload size is " << max_payload_size);
max_payload_size_ = max_payload_size;
}
void ProtocolPacket::ProtocolHeaderValidator::set_max_control_payload_size(
const size_t max_payload_size) {
LOG4CXX_DEBUG(logger_,
"New maximum Control payload size is " << max_payload_size);
max_control_payload_size_ = max_payload_size;
}
void ProtocolPacket::ProtocolHeaderValidator::set_max_rpc_payload_size(
const size_t max_payload_size) {
LOG4CXX_DEBUG(logger_,
"New maximum RPC payload size is " << max_payload_size);
max_rpc_payload_size_ = max_payload_size;
}
void ProtocolPacket::ProtocolHeaderValidator::set_max_audio_payload_size(
const size_t max_payload_size) {
LOG4CXX_DEBUG(logger_,
"New maximum audio payload size is " << max_payload_size);
max_audio_payload_size_ = max_payload_size;
}
void ProtocolPacket::ProtocolHeaderValidator::set_max_video_payload_size(
const size_t max_payload_size) {
LOG4CXX_DEBUG(logger_,
"New maximum video payload size is " << max_payload_size);
max_video_payload_size_ = max_payload_size;
}
size_t ProtocolPacket::ProtocolHeaderValidator::max_payload_size() const {
return max_payload_size_;
}
size_t ProtocolPacket::ProtocolHeaderValidator::max_control_payload_size()
const {
return max_control_payload_size_;
}
size_t ProtocolPacket::ProtocolHeaderValidator::max_rpc_payload_size() const {
return max_rpc_payload_size_;
}
size_t ProtocolPacket::ProtocolHeaderValidator::max_audio_payload_size() const {
return max_audio_payload_size_;
}
size_t ProtocolPacket::ProtocolHeaderValidator::max_video_payload_size() const {
return max_video_payload_size_;
}
size_t
ProtocolPacket::ProtocolHeaderValidator::max_payload_size_by_service_type(
const ServiceType type) const {
size_t payload_size = 0;
switch (type) {
case kControl:
// Default to the generic MTU if specific MTU is not set
payload_size = max_control_payload_size_ == 0 ? max_payload_size_
: max_control_payload_size_;
break;
case kBulk:
case kRpc:
// Default to the generic MTU if specific MTU is not set
payload_size = max_rpc_payload_size_ == 0 ? max_payload_size_
: max_rpc_payload_size_;
break;
case kAudio:
// Default to the generic MTU if specific MTU is not set
payload_size = max_audio_payload_size_ == 0 ? max_payload_size_
: max_audio_payload_size_;
break;
case kMobileNav:
// Default to the generic MTU if specific MTU is not set
payload_size = max_video_payload_size_ == 0 ? max_payload_size_
: max_video_payload_size_;
break;
case kInvalidServiceType:
LOG4CXX_WARN(logger_, "Invalid service type: " << static_cast<int>(type));
}
return payload_size;
}
RESULT_CODE ProtocolPacket::ProtocolHeaderValidator::validate(
const ProtocolHeader& header) const {
LOG4CXX_DEBUG(logger_, "Validating header - " << header);
// expected payload size will be calculated depending
// on used protocol version and service type
size_t payload_size = MAXIMUM_FRAME_DATA_V2_SIZE;
// Protocol version shall be from 1 to 4
switch (header.version) {
case PROTOCOL_VERSION_1:
case PROTOCOL_VERSION_2:
break;
case PROTOCOL_VERSION_3:
case PROTOCOL_VERSION_4:
payload_size = max_payload_size_ > MAXIMUM_FRAME_DATA_V2_SIZE
? max_payload_size_
: MAXIMUM_FRAME_DATA_V2_SIZE;
break;
case PROTOCOL_VERSION_5:
payload_size = max_payload_size_by_service_type(
ServiceTypeFromByte(header.serviceType));
break;
default:
LOG4CXX_WARN(logger_,
"Unknown version:" << static_cast<int>(header.version));
return RESULT_FAIL;
}
// ServiceType shall be equal 0x0 (Control), 0x07 (RPC), 0x0A (PCM), 0x0B
// (Video), 0x0F (Bulk)
if (ServiceTypeFromByte(header.serviceType) == kInvalidServiceType) {
LOG4CXX_WARN(logger_,
"Invalide service type"
<< static_cast<int>(header.serviceType));
return RESULT_FAIL;
}
// Check frame info for each frame type
// Frame type shall be 0x00 (Control), 0x01 (Single), 0x02 (First), 0x03
// (Consecutive)
// For Control frames Frame info value shall be from 0x00 to 0x06 or 0xFE(Data
// Ack), 0xFF(HB Ack)
// For Single and First frames Frame info value shall be equal 0x00
switch (header.frameType) {
case FRAME_TYPE_CONTROL: {
switch (header.frameData) {
case FRAME_DATA_HEART_BEAT:
case FRAME_DATA_START_SERVICE:
case FRAME_DATA_START_SERVICE_ACK:
case FRAME_DATA_START_SERVICE_NACK:
case FRAME_DATA_END_SERVICE:
case FRAME_DATA_END_SERVICE_ACK:
case FRAME_DATA_END_SERVICE_NACK:
case FRAME_DATA_SERVICE_DATA_ACK:
case FRAME_DATA_HEART_BEAT_ACK:
break;
default:
LOG4CXX_WARN(logger_,
"FRAME_TYPE_CONTROL - Invalide frame data "
<< static_cast<int>(header.frameData));
return RESULT_FAIL;
}
break;
}
case FRAME_TYPE_SINGLE:
if (header.frameData != FRAME_DATA_SINGLE) {
LOG4CXX_WARN(logger_,
"FRAME_TYPE_SINGLE - Invalide frame data "
<< static_cast<int>(header.frameData));
return RESULT_FAIL;
}
break;
case FRAME_TYPE_FIRST:
if (header.frameData != FRAME_DATA_FIRST) {
LOG4CXX_WARN(logger_,
"FRAME_TYPE_FIRST - Invalide frame data "
<< static_cast<int>(header.frameData));
return RESULT_FAIL;
}
break;
case FRAME_TYPE_CONSECUTIVE:
// Could have any FrameInfo value
break;
default:
LOG4CXX_WARN(logger_,
"Unknown frame type " << static_cast<int>(header.frameType));
// All other Frame type is invalid
return RESULT_FAIL;
}
// For Control frames Data Size value shall be less than MTU header
// For Single and Consecutive Data Size value shall be greater than 0x00
// and shall be less than payload size
if (header.dataSize > payload_size) {
LOG4CXX_WARN(logger_,
"Packet data size is "
<< header.dataSize
<< " and bigger than allowed payload size " << payload_size
<< " bytes");
return RESULT_FAIL;
}
switch (header.frameType) {
case FRAME_TYPE_SINGLE:
case FRAME_TYPE_CONSECUTIVE:
if (header.dataSize <= 0u) {
LOG4CXX_WARN(logger_,
"Data size of Single and Consecutive frame shall be not "
"equal 0 byte ");
return RESULT_FAIL;
}
break;
default:
break;
}
// Message ID be equal or greater than 0x01 (not actual for 1 protocol version
// and Control frames)
if (header.messageId <= 0) {
if (FRAME_TYPE_CONTROL != header.frameType &&
PROTOCOL_VERSION_1 != header.version) {
LOG4CXX_WARN(logger_, "Message ID shall be greater than 0x00");
// Message ID shall be greater than 0x00, but not implemented in SPT
return RESULT_FAIL;
}
}
LOG4CXX_DEBUG(logger_, "Message header is completely correct.");
return RESULT_OK;
}
ProtocolPacket::ProtocolPacket() : payload_size_(0u), connection_id_(0u) {}
ProtocolPacket::ProtocolPacket(ConnectionID connection_id,
uint8_t version,
bool protection,
uint8_t frameType,
uint8_t serviceType,
uint8_t frameData,
uint8_t sessionID,
uint32_t dataSize,
uint32_t messageID,
const uint8_t* data)
: packet_header_(version,
protection,
frameType,
serviceType,
frameData,
sessionID,
dataSize,
messageID)
, packet_data_()
, payload_size_(0)
, connection_id_(connection_id) {
set_data(data, dataSize);
}
ProtocolPacket::ProtocolPacket(ConnectionID connection_id)
: packet_header_()
, packet_data_()
, payload_size_(0)
, connection_id_(connection_id) {}
// Serialization
RawMessagePtr ProtocolPacket::serializePacket() const {
LOG4CXX_AUTO_TRACE(logger_);
// TODO(EZamakhov): Move header serialization to ProtocolHeader
// version is low byte
const uint8_t version_byte = packet_header_.version << 4;
// protection is first bit of second byte
const uint8_t protection_byte = packet_header_.protection_flag ? (0x8) : 0x0;
// frame type is last 3 bits of second byte
const uint8_t frame_type_byte = packet_header_.frameType & 0x07;
uint8_t header[PROTOCOL_HEADER_V2_SIZE];
uint8_t offset = 0;
header[offset++] = version_byte | protection_byte | frame_type_byte;
header[offset++] = packet_header_.serviceType;
header[offset++] = packet_header_.frameData;
header[offset++] = packet_header_.sessionId;
header[offset++] = packet_header_.dataSize >> 24;
header[offset++] = packet_header_.dataSize >> 16;
header[offset++] = packet_header_.dataSize >> 8;
header[offset++] = packet_header_.dataSize;
if (packet_header_.version != PROTOCOL_VERSION_1) {
header[offset++] = packet_header_.messageId >> 24;
header[offset++] = packet_header_.messageId >> 16;
header[offset++] = packet_header_.messageId >> 8;
header[offset++] = packet_header_.messageId;
}
size_t total_packet_size =
offset + (packet_data_.data ? packet_data_.totalDataBytes : 0);
uint8_t* packet = new (std::nothrow) uint8_t[total_packet_size];
if (!packet) {
return RawMessagePtr();
}
memcpy(packet, header, offset);
if (packet_data_.data && packet_data_.totalDataBytes) {
memcpy(packet + offset, packet_data_.data, packet_data_.totalDataBytes);
}
const RawMessagePtr out_message(new RawMessage(connection_id(),
packet_header_.version,
packet,
total_packet_size,
packet_header_.serviceType));
delete[] packet;
return out_message;
}
RESULT_CODE ProtocolPacket::appendData(uint8_t* chunkData,
uint32_t chunkDataSize) {
if (payload_size_ + chunkDataSize <= packet_data_.totalDataBytes) {
if (chunkData && chunkDataSize > 0) {
if (packet_data_.data) {
memcpy(packet_data_.data + payload_size_, chunkData, chunkDataSize);
payload_size_ += chunkDataSize;
return RESULT_OK;
}
}
}
return RESULT_FAIL;
}
size_t ProtocolPacket::packet_size() const {
return packet_header_.dataSize;
}
bool ProtocolPacket::operator==(const ProtocolPacket& other) const {
if (connection_id_ == other.connection_id_ &&
packet_header_.version == other.packet_header_.version &&
packet_header_.protection_flag == other.packet_header_.protection_flag &&
packet_header_.frameType == other.packet_header_.frameType &&
packet_header_.serviceType == other.packet_header_.serviceType &&
packet_header_.frameData == other.packet_header_.frameData &&
packet_header_.sessionId == other.packet_header_.sessionId &&
packet_header_.dataSize == other.packet_header_.dataSize &&
packet_header_.messageId == other.packet_header_.messageId &&
packet_data_.totalDataBytes == other.packet_data_.totalDataBytes) {
if (other.packet_data_.totalDataBytes == 0) {
return true;
}
// Compare payload data
if (packet_data_.data && other.packet_data_.data &&
0 == memcmp(packet_data_.data,
other.packet_data_.data,
packet_data_.totalDataBytes)) {
return true;
}
}
return false;
}
void ProtocolPacket::HandleRawFirstFrameData(const uint8_t* message) {
LOG4CXX_AUTO_TRACE(logger_);
payload_size_ = 0;
const uint8_t* data = message;
uint32_t total_data_bytes = data[0] << 24;
total_data_bytes |= data[1] << 16;
total_data_bytes |= data[2] << 8;
total_data_bytes |= data[3];
set_total_data_bytes(total_data_bytes);
}
RESULT_CODE ProtocolPacket::deserializePacket(const uint8_t* message,
const size_t messageSize) {
LOG4CXX_AUTO_TRACE(logger_);
DCHECK_OR_RETURN(message, RESULT_FAIL);
packet_header_.deserialize(message, messageSize);
const uint8_t offset = packet_header_.version == PROTOCOL_VERSION_1
? PROTOCOL_HEADER_V1_SIZE
: PROTOCOL_HEADER_V2_SIZE;
packet_data_.totalDataBytes = packet_header_.dataSize;
uint32_t dataPayloadSize = 0;
if ((offset < messageSize)) {
dataPayloadSize = messageSize - offset;
}
if (packet_header_.frameType == FRAME_TYPE_FIRST &&
!packet_header_.protection_flag) {
payload_size_ = 0;
const uint8_t* data = message + offset;
HandleRawFirstFrameData(data);
if (0 == packet_data_.data) {
return RESULT_FAIL;
}
} else if (dataPayloadSize) {
delete[] packet_data_.data;
packet_data_.data = new (std::nothrow) uint8_t[dataPayloadSize];
memcpy(packet_data_.data, message + offset, dataPayloadSize);
payload_size_ = dataPayloadSize;
}
return RESULT_OK;
}
uint8_t ProtocolPacket::protocol_version() const {
return packet_header_.version;
}
bool ProtocolPacket::protection_flag() const {
return packet_header_.protection_flag;
}
void ProtocolPacket::set_protection_flag(const bool protection) {
packet_header_.protection_flag = protection;
}
uint8_t ProtocolPacket::frame_type() const {
return packet_header_.frameType;
}
uint8_t ProtocolPacket::service_type() const {
return packet_header_.serviceType;
}
uint8_t ProtocolPacket::frame_data() const {
return packet_header_.frameData;
}
void ProtocolPacket::set_frame_data(const uint8_t frame_data) {
packet_header_.frameData = frame_data;
}
uint8_t ProtocolPacket::session_id() const {
return packet_header_.sessionId;
}
uint32_t ProtocolPacket::data_size() const {
return packet_header_.dataSize;
}
uint32_t ProtocolPacket::message_id() const {
return packet_header_.messageId;
}
uint8_t* ProtocolPacket::data() const {
return packet_data_.data;
}
void ProtocolPacket::set_total_data_bytes(size_t dataBytes) {
LOG4CXX_AUTO_TRACE(logger_);
LOG4CXX_DEBUG(logger_, "Data bytes : " << dataBytes);
if (dataBytes) {
delete[] packet_data_.data;
packet_data_.data = new (std::nothrow) uint8_t[dataBytes];
packet_data_.totalDataBytes = packet_data_.data ? dataBytes : 0u;
}
}
void ProtocolPacket::set_data(const uint8_t* const new_data,
const size_t new_data_size) {
if (new_data_size && new_data) {
packet_header_.dataSize = packet_data_.totalDataBytes = new_data_size;
delete[] packet_data_.data;
packet_data_.data = new (std::nothrow) uint8_t[packet_data_.totalDataBytes];
if (packet_data_.data) {
memcpy(packet_data_.data, new_data, packet_data_.totalDataBytes);
} else {
// TODO(EZamakhov): add log info about memory problem
packet_header_.dataSize = packet_data_.totalDataBytes = 0u;
}
}
}
uint32_t ProtocolPacket::total_data_bytes() const {
return packet_data_.totalDataBytes;
}
ConnectionID ProtocolPacket::connection_id() const {
return connection_id_;
}
uint32_t ProtocolPacket::payload_size() const {
return payload_size_;
}
const ProtocolPacket::ProtocolHeader& ProtocolPacket::packet_header() const {
return packet_header_;
}
} // namespace protocol_handler
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