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/*
* Copyright (C) 2010 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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 "BlobData.h"
#include "FileStreamClient.h"
#include "HTTPParsers.h"
#include "ResourceHandle.h"
#include <wtf/Vector.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class AsyncFileStream;
class BlobData;
class FileStream;
class ResourceHandleClient;
class ResourceRequest;
class BlobDataItem;
// FIXME: Move even more logic from BlobResourceHandle / NetworkDataTaskBlob to
// BlobResourceHandleBase and make data members private.
class BlobResourceHandleBase {
public:
enum class Error {
NoError = 0,
NotFoundError = 1,
SecurityError = 2,
RangeError = 3,
NotReadableError = 4,
MethodNotAllowed = 5
};
protected:
WEBCORE_EXPORT BlobResourceHandleBase(RefPtr<BlobData>&& = nullptr);
~BlobResourceHandleBase() = default;
WEBCORE_EXPORT std::optional<Error> seek();
WEBCORE_EXPORT std::optional<Error> adjustAndValidateRangeBounds();
RefPtr<BlobData> m_blobData;
bool m_isRangeRequest { false };
std::optional<HTTPRange> m_range;
Vector<uint64_t> m_itemLengthList;
uint64_t m_totalSize { 0 };
uint64_t m_totalRemainingSize { 0 };
uint64_t m_currentItemReadSize { 0 };
unsigned m_readItemCount { 0 };
};
class BlobResourceHandle final : public BlobResourceHandleBase, public FileStreamClient, public ResourceHandle {
public:
static Ref<BlobResourceHandle> createAsync(BlobData*, const ResourceRequest&, ResourceHandleClient*);
static void loadResourceSynchronously(BlobData*, const ResourceRequest&, ResourceError&, ResourceResponse&, Vector<uint8_t>& data);
void start();
int readSync(std::span<uint8_t>);
bool aborted() const { return m_aborted; }
bool isBlobResourceHandle() const final { return true; }
private:
BlobResourceHandle(BlobData*, const ResourceRequest&, ResourceHandleClient*, bool async);
virtual ~BlobResourceHandle();
// FileStreamClient methods.
void didGetSize(long long) override;
void didOpen(bool) override;
void didRead(int) override;
// ResourceHandle methods.
void cancel() override;
void doStart();
void getSizeForNext();
void consumeData(std::span<const uint8_t>);
void failed(Error);
void readAsync();
void readDataAsync(const BlobDataItem&);
void readFileAsync(const BlobDataItem&);
int readDataSync(const BlobDataItem&, std::span<uint8_t>);
int readFileSync(const BlobDataItem&, std::span<uint8_t>);
void notifyResponse();
void notifyResponseOnSuccess();
void notifyResponseOnError();
void notifyReceiveData(std::span<const uint8_t>);
void notifyFail(Error);
void notifyFinish();
bool erroredOrAborted() const { return m_aborted || m_errorCode != Error::NoError; }
bool m_async;
std::unique_ptr<AsyncFileStream> m_asyncStream; // For asynchronous loading.
std::unique_ptr<FileStream> m_stream; // For synchronous loading.
Vector<uint8_t> m_buffer;
Error m_errorCode { Error::NoError };
bool m_aborted { false };
unsigned m_sizeItemCount { 0 };
bool m_fileOpened { false };
};
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::BlobResourceHandle)
static bool isType(const WebCore::ResourceHandle& handle) { return handle.isBlobResourceHandle(); }
SPECIALIZE_TYPE_TRAITS_END()
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