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/*
* Copyright (C) 2015-2017 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.
*/
#pragma once
#include <span>
#include <wtf/FileSystem.h>
#include <wtf/SHA1.h>
#include <wtf/ThreadSafeRefCounted.h>
#include <wtf/text/WTFString.h>
#if PLATFORM(COCOA)
#include <wtf/OSObjectPtr.h>
#endif
#if USE(GLIB)
#include <wtf/glib/GRefPtr.h>
#endif
#if USE(CURL)
#include <variant>
#include <wtf/Box.h>
#endif
namespace WebCore {
class SharedMemory;
}
namespace WebKit {
namespace NetworkCache {
class Data {
public:
Data() { }
Data(std::span<const uint8_t>);
~Data() { }
static Data empty();
static Data adoptMap(FileSystem::MappedFileData&&, FileSystem::PlatformFileHandle);
#if PLATFORM(COCOA)
enum class Backing { Buffer, Map };
Data(OSObjectPtr<dispatch_data_t>&&, Backing = Backing::Buffer);
#endif
#if USE(GLIB)
Data(GRefPtr<GBytes>&&, FileSystem::PlatformFileHandle fd = FileSystem::invalidPlatformFileHandle);
#elif USE(CURL)
Data(std::variant<Vector<uint8_t>, FileSystem::MappedFileData>&&);
Data(Vector<uint8_t>&& data) : Data(std::variant<Vector<uint8_t>, FileSystem::MappedFileData> { WTFMove(data) }) { }
#endif
bool isNull() const;
bool isEmpty() const { return !size(); }
std::span<const uint8_t> span() const;
size_t size() const;
bool isMap() const { return m_isMap; }
RefPtr<WebCore::SharedMemory> tryCreateSharedMemory() const;
Data subrange(size_t offset, size_t) const;
bool apply(NOESCAPE const Function<bool(std::span<const uint8_t>)>&) const;
Data mapToFile(const String& path) const;
#if PLATFORM(COCOA)
dispatch_data_t dispatchData() const { return m_dispatchData.get(); }
#endif
#if USE(GLIB)
GBytes* bytes() const { return m_buffer.get(); }
#endif
private:
#if PLATFORM(COCOA)
mutable OSObjectPtr<dispatch_data_t> m_dispatchData;
mutable std::span<const uint8_t> m_data;
#endif
#if USE(GLIB)
mutable GRefPtr<GBytes> m_buffer;
FileSystem::PlatformFileHandle m_fileDescriptor { FileSystem::invalidPlatformFileHandle };
#endif
#if USE(CURL)
Box<std::variant<Vector<uint8_t>, FileSystem::MappedFileData>> m_buffer;
#endif
bool m_isMap { false };
};
Data concatenate(const Data&, const Data&);
bool bytesEqual(const Data&, const Data&);
Data adoptAndMapFile(FileSystem::PlatformFileHandle, size_t offset, size_t);
Data mapFile(const String& path);
using Salt = FileSystem::Salt;
SHA1::Digest computeSHA1(const Data&, const Salt&);
}
}
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