1 /* 2 * Copyright (C) 2009, 2012 Google Inc. All rights reserved. 3 * Copyright (C) 2013, Intel Corporation 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are 7 * met: 8 * 9 * * Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * * Redistributions in binary form must reproduce the above 12 * copyright notice, this list of conditions and the following disclaimer 13 * in the documentation and/or other materials provided with the 14 * distribution. 15 * * Neither the name of Google Inc. nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #ifndef DocumentThreadableLoader_h 33 #define DocumentThreadableLoader_h 34 35 #include "core/fetch/RawResource.h" 36 #include "core/fetch/ResourceOwner.h" 37 #include "core/loader/ThreadableLoader.h" 38 #include "platform/Timer.h" 39 #include "platform/network/HTTPHeaderMap.h" 40 #include "platform/network/ResourceError.h" 41 #include "wtf/Forward.h" 42 #include "wtf/OwnPtr.h" 43 #include "wtf/PassRefPtr.h" 44 #include "wtf/text/WTFString.h" 45 46 namespace blink { 47 48 class Document; 49 class KURL; 50 class ResourceRequest; 51 class SecurityOrigin; 52 class ThreadableLoaderClient; 53 54 class DocumentThreadableLoader FINAL : public ThreadableLoader, private ResourceOwner<RawResource> { 55 WTF_MAKE_FAST_ALLOCATED; 56 public: 57 static void loadResourceSynchronously(Document&, const ResourceRequest&, ThreadableLoaderClient&, const ThreadableLoaderOptions&, const ResourceLoaderOptions&); 58 static PassRefPtr<DocumentThreadableLoader> create(Document&, ThreadableLoaderClient*, const ResourceRequest&, const ThreadableLoaderOptions&, const ResourceLoaderOptions&); 59 virtual ~DocumentThreadableLoader(); 60 61 virtual void overrideTimeout(unsigned long timeout) OVERRIDE; 62 63 virtual void cancel() OVERRIDE; 64 void setDefersLoading(bool); 65 66 private: 67 enum BlockingBehavior { 68 LoadSynchronously, 69 LoadAsynchronously 70 }; 71 72 DocumentThreadableLoader(Document&, ThreadableLoaderClient*, BlockingBehavior, const ResourceRequest&, const ThreadableLoaderOptions&, const ResourceLoaderOptions&); 73 74 // RawResourceClient implementation 75 virtual void dataSent(Resource*, unsigned long long bytesSent, unsigned long long totalBytesToBeSent) OVERRIDE; 76 virtual void responseReceived(Resource*, const ResourceResponse&) OVERRIDE; 77 virtual void dataReceived(Resource*, const char* data, int dataLength) OVERRIDE; 78 virtual void redirectReceived(Resource*, ResourceRequest&, const ResourceResponse&) OVERRIDE; 79 virtual void notifyFinished(Resource*) OVERRIDE; 80 virtual void dataDownloaded(Resource*, int) OVERRIDE; 81 82 void cancelWithError(const ResourceError&); 83 84 // Notify Inspector about resource response. Use this method if response is not going to be finished normally. 85 void notifyResponseReceived(unsigned long identifier, const ResourceResponse&); 86 87 // Methods containing code to handle resource fetch results which is 88 // common to both sync and async mode. 89 void handleResponse(unsigned long identifier, const ResourceResponse&); 90 void handleReceivedData(const char* data, int dataLength); 91 void handleSuccessfulFinish(unsigned long identifier, double finishTime); 92 93 void didTimeout(Timer<DocumentThreadableLoader>*); 94 void makeCrossOriginAccessRequest(const ResourceRequest&); 95 // Loads m_actualRequest. 96 void loadActualRequest(); 97 // Clears m_actualRequest and reports access control check failure to 98 // m_client. 99 void handlePreflightFailure(const String& url, const String& errorDescription); 100 // Investigates the response for the preflight request. If successful, 101 // the actual request will be made later in handleSuccessfulFinish(). 102 void handlePreflightResponse(const ResourceResponse&); 103 104 void loadRequest(const ResourceRequest&, ResourceLoaderOptions); 105 bool isAllowedRedirect(const KURL&) const; 106 bool isAllowedByPolicy(const KURL&) const; 107 // Returns DoNotAllowStoredCredentials 108 // if m_forceDoNotAllowStoredCredentials is set. Otherwise, just 109 // returns allowCredentials value of m_resourceLoaderOptions. 110 StoredCredentials effectiveAllowCredentials() const; 111 112 SecurityOrigin* securityOrigin() const; 113 114 ThreadableLoaderClient* m_client; 115 Document& m_document; 116 117 const ThreadableLoaderOptions m_options; 118 // Some items may be overridden by m_forceDoNotAllowStoredCredentials 119 // and m_securityOrigin. In such a case, build a ResourceLoaderOptions 120 // with up-to-date values from them and this variable, and use it. 121 const ResourceLoaderOptions m_resourceLoaderOptions; 122 123 bool m_forceDoNotAllowStoredCredentials; 124 RefPtr<SecurityOrigin> m_securityOrigin; 125 126 bool m_sameOriginRequest; 127 bool m_simpleRequest; 128 bool m_async; 129 130 // Holds the original request and options for it during preflight 131 // request handling phase. 132 OwnPtr<ResourceRequest> m_actualRequest; 133 OwnPtr<ResourceLoaderOptions> m_actualOptions; 134 135 HTTPHeaderMap m_simpleRequestHeaders; // stores simple request headers in case of a cross-origin redirect. 136 Timer<DocumentThreadableLoader> m_timeoutTimer; 137 double m_requestStartedSeconds; // Time an asynchronous fetch request is started 138 }; 139 140 } // namespace blink 141 142 #endif // DocumentThreadableLoader_h 143