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// Copyright (C) 2021 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 <limits>
#include <vsomeip/payload.hpp>
#include "../include/distribute_security_policies_command.hpp"
#include "../../security/include/policy.hpp"
namespace vsomeip_v3 {
namespace protocol {
distribute_security_policies_command::distribute_security_policies_command()
: command(id_e::DISTRIBUTE_SECURITY_POLICIES_ID) {
}
void
distribute_security_policies_command::serialize(std::vector<byte_t> &_buffer,
error_e &_error) const {
size_t its_size(COMMAND_HEADER_SIZE +
std::min(payload_.size(), size_t(std::numeric_limits<uint32_t>::max())));
if (its_size > std::numeric_limits<command_size_t>::max()) {
_error = error_e::ERROR_MAX_COMMAND_SIZE_EXCEEDED;
return;
}
// resize buffer
_buffer.resize(its_size);
// set size
size_ = static_cast<command_size_t>(its_size - COMMAND_HEADER_SIZE);
// serialize header
command::serialize(_buffer, _error);
if (_error != error_e::ERROR_OK)
return;
// serialize (add) payload
size_t its_offset(COMMAND_HEADER_SIZE);
if (payload_.empty()) { // No policy data (--> set_payloads was not called)
std::memset(&_buffer[its_offset], 0, sizeof(uint32_t));
} else {
std::memcpy(&_buffer[its_offset], payload_.data(), payload_.size());
}
}
void
distribute_security_policies_command::deserialize(const std::vector<byte_t> &_buffer,
error_e &_error) {
if (COMMAND_HEADER_SIZE + sizeof(uint32_t) > _buffer.size()) {
_error = error_e::ERROR_NOT_ENOUGH_BYTES;
return;
}
// deserialize header
command::deserialize(_buffer, _error);
if (_error != error_e::ERROR_OK)
return;
// deserialize payload
size_t its_offset(COMMAND_HEADER_SIZE);
uint32_t its_policies_count;
std::memcpy(&its_policies_count, &_buffer[its_offset],
sizeof(its_policies_count));
its_offset += sizeof(its_policies_count);
for (uint32_t i = 0; i < its_policies_count; i++) {
uint32_t its_policy_size;
std::memcpy(&its_policy_size, &_buffer[its_offset],
sizeof(its_policy_size));
its_offset += sizeof(its_policy_size);
const byte_t *its_policy_data = &_buffer[its_offset];
// set offset to the next policy
its_offset += its_policy_size;
auto its_policy = std::make_shared<policy>();
if (its_policy_size == 0
|| !its_policy->deserialize(its_policy_data, its_policy_size)) {
_error = error_e::ERROR_UNKNOWN;
policies_.clear();
return;
}
policies_.insert(its_policy);
}
}
std::set<std::shared_ptr<policy> >
distribute_security_policies_command::get_policies() const {
return (policies_);
}
void
distribute_security_policies_command::set_payloads(
const std::map<uint32_t, std::shared_ptr<payload> > &_payloads) {
uint32_t its_count(uint32_t(_payloads.size()));
for (uint32_t i = 0; i < sizeof(its_count); ++i) {
payload_.push_back(
reinterpret_cast<const byte_t*>(&its_count)[i]);
}
for (const auto &its_uid_gid : _payloads) {
// policy payload length including gid and uid
std::uint32_t its_length(uint32_t(its_uid_gid.second->get_length()));
for (uint32_t i = 0; i < sizeof(its_length); ++i) {
payload_.push_back(
reinterpret_cast<const byte_t*>(&its_length)[i]);
}
// payload
payload_.insert(payload_.end(), its_uid_gid.second->get_data(),
its_uid_gid.second->get_data() + its_uid_gid.second->get_length());
}
}
} // namespace protocol
} // namespace vsomeip
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