From 09d4125ff164f5ca686d12ccb0790c35ce721a6b Mon Sep 17 00:00:00 2001 From: Matthew Hodgson Date: Sat, 27 Jun 2015 01:15:23 +0200 Subject: Rename axolotlpp as olm to avoid confusion with Axolotl-the-spec and Axolotl-the-OWS-libraries at moxie's request --- include/olm/pickle.hh | 178 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 178 insertions(+) create mode 100644 include/olm/pickle.hh (limited to 'include/olm/pickle.hh') diff --git a/include/olm/pickle.hh b/include/olm/pickle.hh new file mode 100644 index 0000000..1676e23 --- /dev/null +++ b/include/olm/pickle.hh @@ -0,0 +1,178 @@ +/* Copyright 2015 OpenMarket Ltd + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef OLM_PICKLE_HH_ +#define OLM_PICKLE_HH_ + +#include "olm/list.hh" +#include "olm/crypto.hh" + +#include +#include + +namespace olm { + +static std::size_t pickle_length( + const std::uint32_t & value +) { + return 4; +} + + +static std::uint8_t * pickle( + std::uint8_t * pos, + std::uint32_t value +) { + pos += 4; + for (unsigned i = 4; i--;) { *(--pos) = value; value >>= 8; } + return pos + 4; +} + + +static std::uint8_t const * unpickle( + std::uint8_t const * pos, std::uint8_t const * end, + std::uint32_t & value +) { + value = 0; + if (end - pos < 4) return end; + for (unsigned i = 4; i--;) { value <<= 8; value |= *(pos++); } + return pos; +} + +static std::size_t pickle_length( + const bool & value +) { + return 1; +} + + +static std::uint8_t * pickle( + std::uint8_t * pos, + bool value +) { + *(pos++) = value ? 1 : 0; + return pos; +} + + +static std::uint8_t const * unpickle( + std::uint8_t const * pos, std::uint8_t const * end, + bool & value +) { + if (pos == end) return end; + value = *(pos++); + return pos; +} + + + +template +std::size_t pickle_length( + olm::List const & list +) { + std::size_t length = pickle_length(std::uint32_t(list.size())); + for (auto const & value : list) { + length += pickle_length(value); + } + return length; +} + + +template +std::uint8_t * pickle( + std::uint8_t * pos, + olm::List const & list +) { + pos = pickle(pos, std::uint32_t(list.size())); + for (auto const & value : list) { + pos = pickle(pos, value); + } + return pos; +} + + +template +std::uint8_t const * unpickle( + std::uint8_t const * pos, std::uint8_t const * end, + olm::List & list +) { + std::uint32_t size; + pos = unpickle(pos, end, size); + while (size--) { + T * value = list.insert(list.end()); + pos = unpickle(pos, end, *value); + } + return pos; +} + + +static std::uint8_t * pickle_bytes( + std::uint8_t * pos, + std::uint8_t const * bytes, std::size_t bytes_length +) { + std::memcpy(pos, bytes, bytes_length); + return pos + bytes_length; +} + + +static std::uint8_t const * unpickle_bytes( + std::uint8_t const * pos, std::uint8_t const * end, + std::uint8_t * bytes, std::size_t bytes_length +) { + if (end - pos < bytes_length) return end; + std::memcpy(bytes, pos, bytes_length); + return pos + bytes_length; +} + + +std::size_t pickle_length( + const Curve25519PublicKey & value +); + + +std::uint8_t * pickle( + std::uint8_t * pos, + const Curve25519PublicKey & value +); + + +std::uint8_t const * unpickle( + std::uint8_t const * pos, std::uint8_t const * end, + Curve25519PublicKey & value +); + + +std::size_t pickle_length( + const Curve25519KeyPair & value +); + + +std::uint8_t * pickle( + std::uint8_t * pos, + const Curve25519KeyPair & value +); + + +std::uint8_t const * unpickle( + std::uint8_t const * pos, std::uint8_t const * end, + Curve25519KeyPair & value +); + + +} // namespace olm + + + + +#endif /* OLM_PICKLE_HH */ -- cgit v1.2.3