mirror of https://git.matrix.org/git/olm.git
166 lines
3.4 KiB
C++
166 lines
3.4 KiB
C++
/* Copyright 2015 OpenMarket Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef OLM_PICKLE_HH_
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#define OLM_PICKLE_HH_
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#include "olm/list.hh"
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#include "olm/crypto.h"
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#include <cstring>
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#include <cstdint>
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/* Convenience macro for checking the return value of internal unpickling
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* functions and returning early on failure. */
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#ifndef UNPICKLE_OK
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#define UNPICKLE_OK(x) do { if (!(x)) return nullptr; } while(0)
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#endif
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namespace olm {
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inline std::size_t pickle_length(
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const std::uint32_t & value
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) {
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return 4;
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}
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std::uint8_t * pickle(
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std::uint8_t * pos,
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std::uint32_t value
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);
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std::uint8_t const * unpickle(
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std::uint8_t const * pos, std::uint8_t const * end,
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std::uint32_t & value
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);
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inline std::size_t pickle_length(
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const bool & value
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) {
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return 1;
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}
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std::uint8_t * pickle(
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std::uint8_t * pos,
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bool value
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);
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std::uint8_t const * unpickle(
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std::uint8_t const * pos, std::uint8_t const * end,
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bool & value
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);
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template<typename T, std::size_t max_size>
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std::size_t pickle_length(
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olm::List<T, max_size> const & list
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) {
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std::size_t length = pickle_length(std::uint32_t(list.size()));
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for (auto const & value : list) {
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length += pickle_length(value);
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}
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return length;
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}
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template<typename T, std::size_t max_size>
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std::uint8_t * pickle(
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std::uint8_t * pos,
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olm::List<T, max_size> const & list
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) {
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pos = pickle(pos, std::uint32_t(list.size()));
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for (auto const & value : list) {
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pos = pickle(pos, value);
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}
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return pos;
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}
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template<typename T, std::size_t max_size>
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std::uint8_t const * unpickle(
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std::uint8_t const * pos, std::uint8_t const * end,
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olm::List<T, max_size> & list
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) {
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std::uint32_t size;
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pos = unpickle(pos, end, size);
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if (!pos) {
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return nullptr;
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}
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while (size-- && pos != end) {
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T * value = list.insert(list.end());
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pos = unpickle(pos, end, *value);
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if (!pos) {
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return nullptr;
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}
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}
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return pos;
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}
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std::uint8_t * pickle_bytes(
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std::uint8_t * pos,
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std::uint8_t const * bytes, std::size_t bytes_length
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);
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std::uint8_t const * unpickle_bytes(
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std::uint8_t const * pos, std::uint8_t const * end,
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std::uint8_t * bytes, std::size_t bytes_length
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);
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std::size_t pickle_length(
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const _olm_curve25519_public_key & value
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);
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std::uint8_t * pickle(
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std::uint8_t * pos,
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const _olm_curve25519_public_key & value
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);
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std::uint8_t const * unpickle(
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std::uint8_t const * pos, std::uint8_t const * end,
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_olm_curve25519_public_key & value
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);
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std::size_t pickle_length(
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const _olm_curve25519_key_pair & value
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);
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std::uint8_t * pickle(
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std::uint8_t * pos,
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const _olm_curve25519_key_pair & value
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);
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std::uint8_t const * unpickle(
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std::uint8_t const * pos, std::uint8_t const * end,
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_olm_curve25519_key_pair & value
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);
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} // namespace olm
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#endif /* OLM_PICKLE_HH */
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