1 /* 2 * Copyright (C) 2013 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 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY GOOGLE INC. ``AS IS'' AND ANY 14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GOOGLE INC. OR 17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 #ifndef BackgroundHTMLParser_h 27 #define BackgroundHTMLParser_h 28 29 #include "core/dom/DocumentEncodingData.h" 30 #include "core/html/parser/BackgroundHTMLInputStream.h" 31 #include "core/html/parser/CompactHTMLToken.h" 32 #include "core/html/parser/HTMLParserOptions.h" 33 #include "core/html/parser/HTMLPreloadScanner.h" 34 #include "core/html/parser/HTMLSourceTracker.h" 35 #include "core/html/parser/HTMLTreeBuilderSimulator.h" 36 #include "core/html/parser/TextResourceDecoder.h" 37 #include "core/html/parser/XSSAuditorDelegate.h" 38 #include "wtf/PassOwnPtr.h" 39 #include "wtf/WeakPtr.h" 40 41 namespace blink { 42 43 class HTMLDocumentParser; 44 class SharedBuffer; 45 class XSSAuditor; 46 47 class BackgroundHTMLParser { 48 WTF_MAKE_FAST_ALLOCATED; 49 public: 50 struct Configuration { 51 HTMLParserOptions options; 52 WeakPtr<HTMLDocumentParser> parser; 53 OwnPtr<XSSAuditor> xssAuditor; 54 OwnPtr<TokenPreloadScanner> preloadScanner; 55 OwnPtr<TextResourceDecoder> decoder; 56 }; 57 58 static void start(PassRefPtr<WeakReference<BackgroundHTMLParser> >, PassOwnPtr<Configuration>); 59 60 struct Checkpoint { 61 WeakPtr<HTMLDocumentParser> parser; 62 OwnPtr<HTMLToken> token; 63 OwnPtr<HTMLTokenizer> tokenizer; 64 HTMLTreeBuilderSimulator::State treeBuilderState; 65 HTMLInputCheckpoint inputCheckpoint; 66 TokenPreloadScannerCheckpoint preloadScannerCheckpoint; 67 String unparsedInput; 68 }; 69 70 void appendRawBytesFromParserThread(const char* data, int dataLength); 71 72 void appendRawBytesFromMainThread(PassOwnPtr<Vector<char> >); 73 void setDecoder(PassOwnPtr<TextResourceDecoder>); 74 void flush(); 75 void resumeFrom(PassOwnPtr<Checkpoint>); 76 void startedChunkWithCheckpoint(HTMLInputCheckpoint); 77 void finish(); 78 void stop(); 79 80 void forcePlaintextForTextDocument(); 81 82 private: 83 BackgroundHTMLParser(PassRefPtr<WeakReference<BackgroundHTMLParser> >, PassOwnPtr<Configuration>); 84 ~BackgroundHTMLParser(); 85 86 void appendDecodedBytes(const String&); 87 void markEndOfFile(); 88 void pumpTokenizer(); 89 void sendTokensToMainThread(); 90 void updateDocument(const String& decodedData); 91 92 WeakPtrFactory<BackgroundHTMLParser> m_weakFactory; 93 BackgroundHTMLInputStream m_input; 94 HTMLSourceTracker m_sourceTracker; 95 OwnPtr<HTMLToken> m_token; 96 OwnPtr<HTMLTokenizer> m_tokenizer; 97 HTMLTreeBuilderSimulator m_treeBuilderSimulator; 98 HTMLParserOptions m_options; 99 WeakPtr<HTMLDocumentParser> m_parser; 100 101 OwnPtr<CompactHTMLTokenStream> m_pendingTokens; 102 PreloadRequestStream m_pendingPreloads; 103 XSSInfoStream m_pendingXSSInfos; 104 105 OwnPtr<XSSAuditor> m_xssAuditor; 106 OwnPtr<TokenPreloadScanner> m_preloadScanner; 107 OwnPtr<TextResourceDecoder> m_decoder; 108 DocumentEncodingData m_lastSeenEncodingData; 109 }; 110 111 } 112 113 #endif 114