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/*
* Copyright (C) 2012 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.
*/
#ifndef WebSocketDeflateFramer_h
#define WebSocketDeflateFramer_h
#if ENABLE(WEB_SOCKETS)
#if USE(ZLIB)
#include "WebSocketDeflater.h"
#endif
#include "WebSocketExtensionProcessor.h"
#include "WebSocketFrame.h"
namespace WebCore {
class WebSocketDeflateFramer;
class DeflateResultHolder {
WTF_MAKE_FAST_ALLOCATED;
public:
explicit DeflateResultHolder(WebSocketDeflateFramer*);
~DeflateResultHolder();
bool succeeded() const { return m_succeeded; }
String failureReason() const { return m_failureReason; }
void fail(const String& failureReason);
private:
WebSocketDeflateFramer* m_framer;
bool m_succeeded;
String m_failureReason;
};
class InflateResultHolder {
WTF_MAKE_FAST_ALLOCATED;
public:
explicit InflateResultHolder(WebSocketDeflateFramer*);
~InflateResultHolder();
bool succeeded() const { return m_succeeded; }
String failureReason() const { return m_failureReason; }
void fail(const String& failureReason);
private:
WebSocketDeflateFramer* m_framer;
bool m_succeeded;
String m_failureReason;
};
class WebSocketDeflateFramer {
public:
WebSocketDeflateFramer();
std::unique_ptr<WebSocketExtensionProcessor> createExtensionProcessor();
bool canDeflate() const;
bool enabled() const { return m_enabled; }
std::unique_ptr<DeflateResultHolder> deflate(WebSocketFrame&);
void resetDeflateContext();
std::unique_ptr<InflateResultHolder> inflate(WebSocketFrame&);
void resetInflateContext();
void didFail();
#if USE(ZLIB)
void enableDeflate(int windowBits, WebSocketDeflater::ContextTakeOverMode);
#endif
private:
bool m_enabled;
#if USE(ZLIB)
std::unique_ptr<WebSocketDeflater> m_deflater;
std::unique_ptr<WebSocketInflater> m_inflater;
#endif
};
}
#endif // ENABLE(WEB_SOCKETS)
#endif // WebSocketDeflateFramer_h
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