1 /* 2 * Copyright (C) 2009 Apple Inc. All Rights Reserved. 3 * Copyright (C) 2009, 2011 Google Inc. All Rights Reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY 15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR 18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY 22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 */ 27 28 #include "config.h" 29 #include "core/workers/WorkerScriptLoader.h" 30 31 #include "core/dom/ExecutionContext.h" 32 #include "core/fetch/TextResourceDecoder.h" 33 #include "core/loader/WorkerThreadableLoader.h" 34 #include "core/workers/WorkerGlobalScope.h" 35 #include "core/workers/WorkerScriptLoaderClient.h" 36 #include "platform/network/ResourceResponse.h" 37 38 #include "wtf/OwnPtr.h" 39 #include "wtf/RefPtr.h" 40 41 namespace WebCore { 42 43 WorkerScriptLoader::WorkerScriptLoader() 44 : m_client(0) 45 , m_failed(false) 46 , m_identifier(0) 47 , m_finishing(false) 48 , m_targetType(ResourceRequest::TargetIsWorker) 49 { 50 } 51 52 WorkerScriptLoader::~WorkerScriptLoader() 53 { 54 } 55 56 void WorkerScriptLoader::loadSynchronously(ExecutionContext* executionContext, const KURL& url, CrossOriginRequestPolicy crossOriginRequestPolicy) 57 { 58 m_url = url; 59 60 OwnPtr<ResourceRequest> request(createResourceRequest()); 61 if (!request) 62 return; 63 64 ASSERT_WITH_SECURITY_IMPLICATION(executionContext->isWorkerGlobalScope()); 65 66 ThreadableLoaderOptions options; 67 options.allowCredentials = AllowStoredCredentials; 68 options.crossOriginRequestPolicy = crossOriginRequestPolicy; 69 options.sendLoadCallbacks = SendCallbacks; 70 // FIXME: Should we add EnforceScriptSrcDirective here? 71 options.contentSecurityPolicyEnforcement = DoNotEnforceContentSecurityPolicy; 72 73 WorkerThreadableLoader::loadResourceSynchronously(toWorkerGlobalScope(executionContext), *request, *this, options); 74 } 75 76 void WorkerScriptLoader::loadAsynchronously(ExecutionContext* executionContext, const KURL& url, CrossOriginRequestPolicy crossOriginRequestPolicy, WorkerScriptLoaderClient* client) 77 { 78 ASSERT(client); 79 m_client = client; 80 m_url = url; 81 82 OwnPtr<ResourceRequest> request(createResourceRequest()); 83 if (!request) 84 return; 85 86 ThreadableLoaderOptions options; 87 options.allowCredentials = AllowStoredCredentials; 88 options.crossOriginRequestPolicy = crossOriginRequestPolicy; 89 options.sendLoadCallbacks = SendCallbacks; 90 91 // During create, callbacks may happen which remove the last reference to this object. 92 RefPtr<WorkerScriptLoader> protect(this); 93 m_threadableLoader = ThreadableLoader::create(executionContext, this, *request, options); 94 } 95 96 const KURL& WorkerScriptLoader::responseURL() const 97 { 98 ASSERT(!failed()); 99 return m_responseURL; 100 } 101 102 PassOwnPtr<ResourceRequest> WorkerScriptLoader::createResourceRequest() 103 { 104 OwnPtr<ResourceRequest> request = adoptPtr(new ResourceRequest(m_url)); 105 request->setHTTPMethod("GET"); 106 request->setTargetType(m_targetType); 107 return request.release(); 108 } 109 110 void WorkerScriptLoader::didReceiveResponse(unsigned long identifier, const ResourceResponse& response) 111 { 112 if (response.httpStatusCode() / 100 != 2 && response.httpStatusCode()) { 113 m_failed = true; 114 return; 115 } 116 m_responseURL = response.url(); 117 m_responseEncoding = response.textEncodingName(); 118 if (m_client) 119 m_client->didReceiveResponse(identifier, response); 120 } 121 122 void WorkerScriptLoader::didReceiveData(const char* data, int len) 123 { 124 if (m_failed) 125 return; 126 127 if (!m_decoder) { 128 if (!m_responseEncoding.isEmpty()) 129 m_decoder = TextResourceDecoder::create("text/javascript", m_responseEncoding); 130 else 131 m_decoder = TextResourceDecoder::create("text/javascript", "UTF-8"); 132 } 133 134 if (!len) 135 return; 136 137 if (len == -1) 138 len = strlen(data); 139 140 m_script.append(m_decoder->decode(data, len)); 141 } 142 143 void WorkerScriptLoader::didFinishLoading(unsigned long identifier, double) 144 { 145 if (m_failed) { 146 notifyError(); 147 return; 148 } 149 150 if (m_decoder) 151 m_script.append(m_decoder->flush()); 152 153 m_identifier = identifier; 154 notifyFinished(); 155 } 156 157 void WorkerScriptLoader::didFail(const ResourceError&) 158 { 159 notifyError(); 160 } 161 162 void WorkerScriptLoader::didFailRedirectCheck() 163 { 164 notifyError(); 165 } 166 167 void WorkerScriptLoader::notifyError() 168 { 169 m_failed = true; 170 notifyFinished(); 171 } 172 173 void WorkerScriptLoader::cancel() 174 { 175 if (m_threadableLoader) 176 m_threadableLoader->cancel(); 177 } 178 179 String WorkerScriptLoader::script() 180 { 181 return m_script.toString(); 182 } 183 184 void WorkerScriptLoader::notifyFinished() 185 { 186 if (!m_client || m_finishing) 187 return; 188 189 m_finishing = true; 190 m_client->notifyFinished(); 191 } 192 193 } // namespace WebCore 194
