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// Copyright (C) 2014-2017 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 "../../../../../e2e_protection/include/e2e/profile/profile_custom/checker.hpp"
#include "../../../../../logging/include/logger.hpp"
#include <iostream>
#include <sstream>
#include <string>
#include <iomanip>
#include <algorithm>
namespace vsomeip {
namespace e2e {
namespace profile_custom {
void profile_custom_checker::check(const e2e_buffer &_buffer,
e2e::profile_interface::generic_check_status &_generic_check_status) {
std::lock_guard<std::mutex> lock(check_mutex_);
_generic_check_status = e2e::profile_interface::generic_check_status::E2E_ERROR;
if (profile_custom::is_buffer_length_valid(config_, _buffer)) {
uint32_t received_crc(0);
uint32_t calculated_crc(0);
received_crc = read_crc(_buffer);
calculated_crc = profile_custom::compute_crc(config_, _buffer);
if (received_crc == calculated_crc) {
_generic_check_status = e2e::profile_interface::generic_check_status::E2E_OK;
} else {
_generic_check_status = e2e::profile_interface::generic_check_status::E2E_WRONG_CRC;
VSOMEIP_INFO << std::hex << "E2E protection: CRC32 does not match: calculated CRC: "
<< (uint32_t) calculated_crc << " received CRC: " << (uint32_t) received_crc;
}
}
return;
}
uint32_t profile_custom_checker::read_crc(const e2e_buffer &_buffer) const {
return (static_cast<uint32_t>(_buffer[config_.crc_offset_ ]) << 24U) |
(static_cast<uint32_t>(_buffer[config_.crc_offset_ + 1U]) << 16U) |
(static_cast<uint32_t>(_buffer[config_.crc_offset_ + 2U]) << 8U) |
static_cast<uint32_t>(_buffer[config_.crc_offset_ + 3U]);
}
} // namespace profile_custom
} // namespace e2e
} // namespace vsomeip
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