1 /* 2 * Copyright (C) 2012 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef WebSocketDeflateFramer_h 32 #define WebSocketDeflateFramer_h 33 34 #include "modules/websockets/WebSocketDeflater.h" 35 #include "modules/websockets/WebSocketExtensionProcessor.h" 36 #include "modules/websockets/WebSocketFrame.h" 37 #include "wtf/OwnPtr.h" 38 #include "wtf/PassOwnPtr.h" 39 40 namespace blink { 41 42 class WebSocketDeflateFramer; 43 44 class DeflateResultHolder { 45 WTF_MAKE_FAST_ALLOCATED; 46 public: create(WebSocketDeflateFramer * framer)47 static PassOwnPtr<DeflateResultHolder> create(WebSocketDeflateFramer* framer) 48 { 49 return adoptPtr(new DeflateResultHolder(framer)); 50 } 51 52 ~DeflateResultHolder(); 53 succeeded()54 bool succeeded() const { return m_succeeded; } failureReason()55 String failureReason() const { return m_failureReason; } 56 57 void fail(const String& failureReason); 58 59 private: 60 explicit DeflateResultHolder(WebSocketDeflateFramer*); 61 62 WebSocketDeflateFramer* m_framer; 63 bool m_succeeded; 64 String m_failureReason; 65 }; 66 67 class InflateResultHolder { 68 WTF_MAKE_FAST_ALLOCATED; 69 public: create(WebSocketDeflateFramer * framer)70 static PassOwnPtr<InflateResultHolder> create(WebSocketDeflateFramer* framer) 71 { 72 return adoptPtr(new InflateResultHolder(framer)); 73 } 74 75 ~InflateResultHolder(); 76 succeeded()77 bool succeeded() const { return m_succeeded; } failureReason()78 String failureReason() const { return m_failureReason; } 79 80 void fail(const String& failureReason); 81 82 private: 83 explicit InflateResultHolder(WebSocketDeflateFramer*); 84 85 WebSocketDeflateFramer* m_framer; 86 bool m_succeeded; 87 String m_failureReason; 88 }; 89 90 class WebSocketDeflateFramer { 91 public: 92 WebSocketDeflateFramer(); 93 94 PassOwnPtr<WebSocketExtensionProcessor> createExtensionProcessor(); 95 enabled()96 bool enabled() const { return m_enabled; } 97 98 PassOwnPtr<DeflateResultHolder> deflate(WebSocketFrame&); 99 void resetDeflateContext(); 100 PassOwnPtr<InflateResultHolder> inflate(WebSocketFrame&); 101 void resetInflateContext(); 102 103 void didFail(); 104 105 void enableDeflate(int windowBits, WebSocketDeflater::ContextTakeOverMode); 106 107 private: 108 bool m_enabled; 109 OwnPtr<WebSocketDeflater> m_deflater; 110 OwnPtr<WebSocketInflater> m_inflater; 111 }; 112 113 } 114 115 #endif // WebSocketDeflateFramer_h 116