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/*
* Copyright (C) 2015 Igalia S.L
*
* 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 "NetworkCacheData.h"
#if ENABLE(NETWORK_CACHE)
#include "SharedMemory.h"
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <unistd.h>
namespace WebKit {
namespace NetworkCache {
Data::Data(const uint8_t* data, size_t size)
: m_size(size)
{
uint8_t* copiedData = static_cast<uint8_t*>(fastMalloc(size));
memcpy(copiedData, data, size);
m_buffer = adoptGRef(soup_buffer_new_with_owner(copiedData, size, copiedData, fastFree));
}
Data::Data(GRefPtr<SoupBuffer>&& buffer, int fd)
: m_buffer(buffer)
, m_fileDescriptor(fd)
, m_size(buffer ? buffer->length : 0)
, m_isMap(m_size && fd != -1)
{
}
Data Data::empty()
{
GRefPtr<SoupBuffer> buffer = adoptGRef(soup_buffer_new(SOUP_MEMORY_TAKE, nullptr, 0));
return { WTFMove(buffer) };
}
const uint8_t* Data::data() const
{
return m_buffer ? reinterpret_cast<const uint8_t*>(m_buffer->data) : nullptr;
}
bool Data::isNull() const
{
return !m_buffer;
}
bool Data::apply(const std::function<bool (const uint8_t*, size_t)>&& applier) const
{
if (!m_size)
return false;
return applier(reinterpret_cast<const uint8_t*>(m_buffer->data), m_buffer->length);
}
Data Data::subrange(size_t offset, size_t size) const
{
if (!m_buffer)
return { };
GRefPtr<SoupBuffer> subBuffer = adoptGRef(soup_buffer_new_subbuffer(m_buffer.get(), offset, size));
return { WTFMove(subBuffer) };
}
Data concatenate(const Data& a, const Data& b)
{
if (a.isNull())
return b;
if (b.isNull())
return a;
size_t size = a.size() + b.size();
uint8_t* data = static_cast<uint8_t*>(fastMalloc(size));
memcpy(data, a.soupBuffer()->data, a.soupBuffer()->length);
memcpy(data + a.soupBuffer()->length, b.soupBuffer()->data, b.soupBuffer()->length);
GRefPtr<SoupBuffer> buffer = adoptGRef(soup_buffer_new_with_owner(data, size, data, fastFree));
return { WTFMove(buffer) };
}
struct MapWrapper {
~MapWrapper()
{
munmap(map, size);
close(fileDescriptor);
}
void* map;
size_t size;
int fileDescriptor;
};
static void deleteMapWrapper(MapWrapper* wrapper)
{
delete wrapper;
}
Data Data::adoptMap(void* map, size_t size, int fd)
{
ASSERT(map);
ASSERT(map != MAP_FAILED);
MapWrapper* wrapper = new MapWrapper { map, size, fd };
GRefPtr<SoupBuffer> buffer = adoptGRef(soup_buffer_new_with_owner(map, size, wrapper, reinterpret_cast<GDestroyNotify>(deleteMapWrapper)));
return { WTFMove(buffer), fd };
}
RefPtr<SharedMemory> Data::tryCreateSharedMemory() const
{
if (isNull() || !isMap())
return nullptr;
return SharedMemory::wrapMap(const_cast<char*>(m_buffer->data), m_buffer->length, m_fileDescriptor);
}
} // namespace NetworkCache
} // namespace WebKit
#endif
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