/*

* Copyright (C) 2018-2020 Apple Inc. All rights reserved.

*

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions

* are met:

* 1. Redistributions of source code must retain the above copyright

* notice, this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reproduce the above copyright

* notice, this list of conditions and the following disclaimer in the

* documentation and/or other materials provided with the distribution.

*

* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''

* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,

* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS

* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF

* THE POSSIBILITY OF SUCH DAMAGE.

*/

#include "config.h"

#include "SharedBufferCopy.h"

#include "ArgumentCoders.h"

#include "DataReference.h"

#include "Decoder.h"

#include "Encoder.h"

namespace IPC {

using namespace WebCore;

void SharedBufferCopy::encode(Encoder& encoder) const

{

uint64_t bufferSize = m_buffer ? m_buffer->size() : 0;

encoder.reserve(sizeof(bufferSize) + bufferSize);

encoder << bufferSize;

if (!bufferSize)

return;

for (auto& segment : *m_buffer)

encoder.encodeFixedLengthData(segment.segment->data(), segment.segment->size(), 1);

}

std::optional<SharedBufferCopy> SharedBufferCopy::decode(Decoder& decoder)

{

IPC::DataReference data;

if (!decoder.decode(data))

return std::nullopt;

RefPtr<SharedBuffer> buffer;

if (data.size())

buffer = SharedBuffer::create(data.data(), data.size());

return { WTFMove(buffer) };

}

} // namespace IPC