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// Copyright (C) 2019 Bayerische Motoren Werke Aktiengesellschaft (BMW AG)
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <iomanip>
#include "../include/tp_reassembler.hpp"
#include <vsomeip/defines.hpp>
#include <vsomeip/enumeration_types.hpp>
#include <vsomeip/internal/logger.hpp>
#include "../include/tp.hpp"
#include "../../utility/include/byteorder.hpp"
#ifdef ANDROID
#include "../../configuration/include/internal_android.hpp"
#else
#include "../../configuration/include/internal.hpp"
#endif // ANDROID
namespace vsomeip_v3 {
namespace tp {
tp_reassembler::tp_reassembler(std::uint32_t _max_message_size, boost::asio::io_service &_io) :
max_message_size_(_max_message_size),
cleanup_timer_running_(false),
cleanup_timer_(_io) {
}
std::pair<bool, message_buffer_t> tp_reassembler::process_tp_message(
const byte_t* const _data, std::uint32_t _data_size,
const boost::asio::ip::address& _address, std::uint16_t _port) {
std::pair<bool, message_buffer_t> ret;
if (_data_size < VSOMEIP_FULL_HEADER_SIZE) {
return std::make_pair(false, message_buffer_t());
}
cleanup_timer_start(false);
const service_t its_service = VSOMEIP_BYTES_TO_WORD(_data[VSOMEIP_SERVICE_POS_MIN],
_data[VSOMEIP_SERVICE_POS_MAX]);
const method_t its_method = VSOMEIP_BYTES_TO_WORD(_data[VSOMEIP_METHOD_POS_MIN],
_data[VSOMEIP_METHOD_POS_MAX]);
const client_t its_client = VSOMEIP_BYTES_TO_WORD(_data[VSOMEIP_CLIENT_POS_MIN],
_data[VSOMEIP_CLIENT_POS_MAX]);
const session_t its_session = VSOMEIP_BYTES_TO_WORD(_data[VSOMEIP_SESSION_POS_MIN],
_data[VSOMEIP_SESSION_POS_MAX]);
const interface_version_t its_interface_version = _data[VSOMEIP_INTERFACE_VERSION_POS];
const message_type_e its_msg_type = tp::tp_flag_unset(_data[VSOMEIP_MESSAGE_TYPE_POS]);
const std::uint64_t its_tp_message_id = ((static_cast<std::uint64_t>(its_service) << 48) |
(static_cast<std::uint64_t>(its_method) << 32) |
(static_cast<std::uint64_t>(its_client) << 16) |
(static_cast<std::uint64_t>(its_interface_version) << 8) |
(static_cast<std::uint64_t>(its_msg_type)));
std::lock_guard<std::mutex> its_lock(mutex_);
ret.first = false;
const auto found_ip = tp_messages_.find(_address);
if (found_ip != tp_messages_.end()) {
const auto found_port = found_ip->second.find(_port);
if (found_port != found_ip->second.end()) {
auto found_tp_msg = found_port->second.find(its_tp_message_id);
if (found_tp_msg != found_port->second.end()) {
if (found_tp_msg->second.first == its_session) {
// received additional segment for already known message
if (found_tp_msg->second.second.add_segment(_data, _data_size)) {
// message is complete
ret.first = true;
ret.second = found_tp_msg->second.second.get_message();
// cleanup tp_message as message was moved and cleanup map
found_port->second.erase(its_tp_message_id);
if (found_port->second.empty()) {
found_ip->second.erase(found_port);
if (found_ip->second.empty()) {
tp_messages_.erase(found_ip);
}
}
}
} else {
VSOMEIP_WARNING << __func__ << ": Received new segment "
"although old one is not finished yet. Dropping "
"old. ("
<< std::hex << std::setw(4) << std::setfill('0') << its_client << ") ["
<< std::hex << std::setw(4) << std::setfill('0') << its_service << "."
<< std::hex << std::setw(4) << std::setfill('0') << its_method << "."
<< std::hex << std::setw(2) << std::setfill('0') << std::uint32_t(its_interface_version) << "."
<< std::hex << std::setw(2) << std::setfill('0') << std::uint32_t(its_msg_type) << "] Old: 0x"
<< std::hex << std::setw(4) << std::setfill('0') << found_tp_msg->second.first << ", new: 0x"
<< std::hex << std::setw(4) << std::setfill('0') << its_session;
// new segment with different session id -> throw away current
found_tp_msg->second.first = its_session;
found_tp_msg->second.second = tp_message(_data, _data_size, max_message_size_);
}
} else {
found_port->second.emplace(
std::make_pair(its_tp_message_id,
std::make_pair(its_session,
tp_message(_data, _data_size, max_message_size_))));
}
} else {
found_ip->second[_port].emplace(
std::make_pair(its_tp_message_id,
std::make_pair(its_session,
tp_message(_data, _data_size, max_message_size_))));
}
} else {
tp_messages_[_address][_port].emplace(
std::make_pair(its_tp_message_id,
std::make_pair(its_session,
tp_message(_data, _data_size, max_message_size_))));
}
return ret;
}
bool tp_reassembler::cleanup_unfinished_messages() {
std::lock_guard<std::mutex> its_lock(mutex_);
const std::chrono::steady_clock::time_point now =
std::chrono::steady_clock::now();
for (auto ip_iter = tp_messages_.begin(); ip_iter != tp_messages_.end();) {
for (auto port_iter = ip_iter->second.begin();
port_iter != ip_iter->second.end();) {
for (auto tp_id_iter = port_iter->second.begin();
tp_id_iter != port_iter->second.end();) {
if (std::chrono::duration_cast<std::chrono::milliseconds>(
now - tp_id_iter->second.second.get_creation_time()).count()
> 5000) {
// message is older than 5 seconds delete it
const service_t its_service = static_cast<service_t>(tp_id_iter->first >> 48);
const method_t its_method = static_cast<method_t>(tp_id_iter->first >> 32);
const client_t its_client = static_cast<client_t>(tp_id_iter->first >> 16);
const interface_version_t its_interface_version = static_cast<interface_version_t>(tp_id_iter->first >> 8);
const message_type_e its_msg_type = static_cast<message_type_e>(tp_id_iter->first >> 0);
VSOMEIP_WARNING << __func__
<< ": deleting unfinished SOME/IP-TP message from: "
<< ip_iter->first.to_string() << ":" << std::dec
<< port_iter->first << " ("
<< std::hex << std::setw(4) << std::setfill('0') << its_client << ") ["
<< std::hex << std::setw(4) << std::setfill('0') << its_service << "."
<< std::hex << std::setw(4) << std::setfill('0') << its_method << "."
<< std::hex << std::setw(2) << std::setfill('0') << std::uint32_t(its_interface_version) << "."
<< std::hex << std::setw(2) << std::setfill('0') << std::uint32_t(its_msg_type) << "."
<< std::hex << std::setw(4) << std::setfill('0') << tp_id_iter->second.first << "]";
tp_id_iter = port_iter->second.erase(tp_id_iter);
} else {
tp_id_iter++;
}
}
if (port_iter->second.empty()) {
port_iter = ip_iter->second.erase(port_iter);
} else {
port_iter++;
}
}
if (ip_iter->second.empty()) {
ip_iter = tp_messages_.erase(ip_iter);
} else {
ip_iter++;
}
}
return !tp_messages_.empty();
}
void tp_reassembler::stop() {
std::lock_guard<std::mutex> its_lock(cleanup_timer_mutex_);
boost::system::error_code ec;
cleanup_timer_.cancel(ec);
}
void tp_reassembler::cleanup_timer_start(bool _force) {
std::lock_guard<std::mutex> its_lock(cleanup_timer_mutex_);
cleanup_timer_start_unlocked(_force);
}
void tp_reassembler::cleanup_timer_start_unlocked(bool _force) {
boost::system::error_code ec;
if (!cleanup_timer_running_ || _force) {
cleanup_timer_.expires_from_now(std::chrono::seconds(5));
cleanup_timer_running_ = true;
cleanup_timer_.async_wait(
std::bind(&tp_reassembler::cleanup_timer_cbk,
shared_from_this(), std::placeholders::_1));
}
}
void tp_reassembler::cleanup_timer_cbk(
const boost::system::error_code _error) {
if (!_error) {
std::lock_guard<std::mutex> its_lock(cleanup_timer_mutex_);
if (cleanup_unfinished_messages()) {
cleanup_timer_start_unlocked(true);
} else {
// don't start timer again as there are no more segmented messages present
cleanup_timer_running_ = false;
}
}
}
} //namespace tp
} // namespace vsomeip_v3
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