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 30 #include "core/workers/WorkerScriptLoader.h" 31 32 #include "core/dom/ScriptExecutionContext.h" 33 #include "core/loader/TextResourceDecoder.h" 34 #include "core/loader/WorkerThreadableLoader.h" 35 #include "core/platform/network/ResourceResponse.h" 36 #include "core/workers/WorkerGlobalScope.h" 37 #include "core/workers/WorkerScriptLoaderClient.h" 38 39 #include <wtf/OwnPtr.h> 40 #include <wtf/RefPtr.h> 41 #include <wtf/UnusedParam.h> 42 43 namespace WebCore { 44 45 WorkerScriptLoader::WorkerScriptLoader() 46 : m_client(0) 47 , m_failed(false) 48 , m_identifier(0) 49 , m_finishing(false) 50 , m_targetType(ResourceRequest::TargetIsWorker) 51 { 52 } 53 54 WorkerScriptLoader::~WorkerScriptLoader() 55 { 56 } 57 58 void WorkerScriptLoader::loadSynchronously(ScriptExecutionContext* scriptExecutionContext, const KURL& url, CrossOriginRequestPolicy crossOriginRequestPolicy) 59 { 60 m_url = url; 61 62 OwnPtr<ResourceRequest> request(createResourceRequest()); 63 if (!request) 64 return; 65 66 ASSERT_WITH_SECURITY_IMPLICATION(scriptExecutionContext->isWorkerGlobalScope()); 67 68 ThreadableLoaderOptions options; 69 options.allowCredentials = AllowStoredCredentials; 70 options.crossOriginRequestPolicy = crossOriginRequestPolicy; 71 options.sendLoadCallbacks = SendCallbacks; 72 // FIXME: Should we add EnforceScriptSrcDirective here? 73 options.contentSecurityPolicyEnforcement = DoNotEnforceContentSecurityPolicy; 74 75 WorkerThreadableLoader::loadResourceSynchronously(toWorkerGlobalScope(scriptExecutionContext), *request, *this, options); 76 } 77 78 void WorkerScriptLoader::loadAsynchronously(ScriptExecutionContext* scriptExecutionContext, const KURL& url, CrossOriginRequestPolicy crossOriginRequestPolicy, WorkerScriptLoaderClient* client) 79 { 80 ASSERT(client); 81 m_client = client; 82 m_url = url; 83 84 OwnPtr<ResourceRequest> request(createResourceRequest()); 85 if (!request) 86 return; 87 88 ThreadableLoaderOptions options; 89 options.allowCredentials = AllowStoredCredentials; 90 options.crossOriginRequestPolicy = crossOriginRequestPolicy; 91 options.sendLoadCallbacks = SendCallbacks; 92 93 // During create, callbacks may happen which remove the last reference to this object. 94 RefPtr<WorkerScriptLoader> protect(this); 95 m_threadableLoader = ThreadableLoader::create(scriptExecutionContext, this, *request, options); 96 } 97 98 const KURL& WorkerScriptLoader::responseURL() const 99 { 100 ASSERT(!failed()); 101 return m_responseURL; 102 } 103 104 PassOwnPtr<ResourceRequest> WorkerScriptLoader::createResourceRequest() 105 { 106 OwnPtr<ResourceRequest> request = adoptPtr(new ResourceRequest(m_url)); 107 request->setHTTPMethod("GET"); 108 request->setTargetType(m_targetType); 109 return request.release(); 110 } 111 112 void WorkerScriptLoader::didReceiveResponse(unsigned long identifier, const ResourceResponse& response) 113 { 114 if (response.httpStatusCode() / 100 != 2 && response.httpStatusCode()) { 115 m_failed = true; 116 return; 117 } 118 m_responseURL = response.url(); 119 m_responseEncoding = response.textEncodingName(); 120 if (m_client) 121 m_client->didReceiveResponse(identifier, response); 122 } 123 124 void WorkerScriptLoader::didReceiveData(const char* data, int len) 125 { 126 if (m_failed) 127 return; 128 129 if (!m_decoder) { 130 if (!m_responseEncoding.isEmpty()) 131 m_decoder = TextResourceDecoder::create("text/javascript", m_responseEncoding); 132 else 133 m_decoder = TextResourceDecoder::create("text/javascript", "UTF-8"); 134 } 135 136 if (!len) 137 return; 138 139 if (len == -1) 140 len = strlen(data); 141 142 m_script.append(m_decoder->decode(data, len)); 143 } 144 145 void WorkerScriptLoader::didFinishLoading(unsigned long identifier, double) 146 { 147 if (m_failed) { 148 notifyError(); 149 return; 150 } 151 152 if (m_decoder) 153 m_script.append(m_decoder->flush()); 154 155 m_identifier = identifier; 156 notifyFinished(); 157 } 158 159 void WorkerScriptLoader::didFail(const ResourceError&) 160 { 161 notifyError(); 162 } 163 164 void WorkerScriptLoader::didFailRedirectCheck() 165 { 166 notifyError(); 167 } 168 169 void WorkerScriptLoader::notifyError() 170 { 171 m_failed = true; 172 notifyFinished(); 173 } 174 175 String WorkerScriptLoader::script() 176 { 177 return m_script.toString(); 178 } 179 180 void WorkerScriptLoader::notifyFinished() 181 { 182 if (!m_client || m_finishing) 183 return; 184 185 m_finishing = true; 186 m_client->notifyFinished(); 187 } 188 189 } // namespace WebCore 190
