1 /* 2 * Copyright (C) 2009 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 #include "config.h" 32 #include "core/loader/appcache/ApplicationCacheHost.h" 33 34 #include "public/platform/WebURL.h" 35 #include "public/platform/WebURLError.h" 36 #include "public/platform/WebURLResponse.h" 37 #include "public/platform/WebVector.h" 38 #include "ApplicationCacheHostInternal.h" 39 #include "WebFrameImpl.h" 40 #include "bindings/v8/ExceptionStatePlaceholder.h" 41 #include "core/events/ProgressEvent.h" 42 #include "core/inspector/InspectorApplicationCacheAgent.h" 43 #include "core/inspector/InspectorInstrumentation.h" 44 #include "core/loader/DocumentLoader.h" 45 #include "core/loader/FrameLoader.h" 46 #include "core/loader/appcache/ApplicationCache.h" 47 #include "core/frame/Frame.h" 48 #include "core/page/Page.h" 49 #include "core/frame/Settings.h" 50 #include "platform/exported/WrappedResourceRequest.h" 51 #include "platform/exported/WrappedResourceResponse.h" 52 #include "platform/weborigin/SecurityOrigin.h" 53 54 using namespace blink; 55 56 namespace WebCore { 57 58 // We provide a custom implementation of this class that calls out to the 59 // embedding application instead of using WebCore's built in appcache system. 60 // This file replaces webcore/appcache/ApplicationCacheHost.cpp in our build. 61 62 ApplicationCacheHost::ApplicationCacheHost(DocumentLoader* documentLoader) 63 : m_domApplicationCache(0) 64 , m_documentLoader(documentLoader) 65 , m_defersEvents(true) 66 { 67 ASSERT(m_documentLoader); 68 } 69 70 ApplicationCacheHost::~ApplicationCacheHost() 71 { 72 } 73 74 void ApplicationCacheHost::willStartLoadingMainResource(ResourceRequest& request) 75 { 76 // We defer creating the outer host object to avoid spurious creation/destruction 77 // around creating empty documents. At this point, we're initiating a main resource 78 // load for the document, so its for real. 79 80 if (!isApplicationCacheEnabled()) 81 return; 82 83 m_internal = adoptPtr(new ApplicationCacheHostInternal(this)); 84 if (m_internal->m_outerHost) { 85 WrappedResourceRequest wrapped(request); 86 m_internal->m_outerHost->willStartMainResourceRequest(wrapped, WebFrameImpl::fromFrame(m_documentLoader->frame())); 87 } else 88 m_internal.clear(); 89 90 // NOTE: The semantics of this method, and others in this interface, are subtly different 91 // than the method names would suggest. For example, in this method never returns an appcached 92 // response in the SubstituteData out argument, instead we return the appcached response thru 93 // the usual resource loading pipeline. 94 } 95 96 void ApplicationCacheHost::selectCacheWithoutManifest() 97 { 98 if (m_internal) 99 m_internal->m_outerHost->selectCacheWithoutManifest(); 100 } 101 102 void ApplicationCacheHost::selectCacheWithManifest(const KURL& manifestURL) 103 { 104 if (m_internal) { 105 if (!m_internal->m_outerHost->selectCacheWithManifest(manifestURL)) { 106 // It's a foreign entry, restart the current navigation from the top 107 // of the navigation algorithm. The navigation will not result in the 108 // same resource being loaded, because "foreign" entries are never picked 109 // during navigation. 110 // see WebCore::ApplicationCacheGroup::selectCache() 111 Frame* frame = m_documentLoader->frame(); 112 frame->navigationScheduler().scheduleLocationChange(frame->document(), 113 frame->document()->url(), frame->document()->referrer()); 114 } 115 } 116 } 117 118 void ApplicationCacheHost::didReceiveResponseForMainResource(const ResourceResponse& response) 119 { 120 if (m_internal) { 121 WrappedResourceResponse wrapped(response); 122 m_internal->m_outerHost->didReceiveResponseForMainResource(wrapped); 123 } 124 } 125 126 void ApplicationCacheHost::mainResourceDataReceived(const char* data, int length) 127 { 128 if (m_internal) 129 m_internal->m_outerHost->didReceiveDataForMainResource(data, length); 130 } 131 132 void ApplicationCacheHost::failedLoadingMainResource() 133 { 134 if (m_internal) 135 m_internal->m_outerHost->didFinishLoadingMainResource(false); 136 } 137 138 void ApplicationCacheHost::finishedLoadingMainResource() 139 { 140 if (m_internal) 141 m_internal->m_outerHost->didFinishLoadingMainResource(true); 142 } 143 144 void ApplicationCacheHost::willStartLoadingResource(ResourceRequest& request) 145 { 146 // FIXME: look into the purpose of the unused KURL& originalURL parameter 147 if (m_internal) { 148 WrappedResourceRequest wrapped(request); 149 m_internal->m_outerHost->willStartSubResourceRequest(wrapped); 150 } 151 } 152 153 void ApplicationCacheHost::setApplicationCache(ApplicationCache* domApplicationCache) 154 { 155 ASSERT(!m_domApplicationCache || !domApplicationCache); 156 m_domApplicationCache = domApplicationCache; 157 } 158 159 void ApplicationCacheHost::notifyApplicationCache(EventID id, int total, int done) 160 { 161 if (id != PROGRESS_EVENT) 162 InspectorInstrumentation::updateApplicationCacheStatus(m_documentLoader->frame()); 163 164 if (m_defersEvents) { 165 // Event dispatching is deferred until document.onload has fired. 166 m_deferredEvents.append(DeferredEvent(id, total, done)); 167 return; 168 } 169 dispatchDOMEvent(id, total, done); 170 } 171 172 ApplicationCacheHost::CacheInfo ApplicationCacheHost::applicationCacheInfo() 173 { 174 if (!m_internal) 175 return CacheInfo(KURL(), 0, 0, 0); 176 177 blink::WebApplicationCacheHost::CacheInfo webInfo; 178 m_internal->m_outerHost->getAssociatedCacheInfo(&webInfo); 179 return CacheInfo(webInfo.manifestURL, webInfo.creationTime, webInfo.updateTime, webInfo.totalSize); 180 } 181 182 void ApplicationCacheHost::fillResourceList(ResourceInfoList* resources) 183 { 184 if (!m_internal) 185 return; 186 187 blink::WebVector<blink::WebApplicationCacheHost::ResourceInfo> webResources; 188 m_internal->m_outerHost->getResourceList(&webResources); 189 for (size_t i = 0; i < webResources.size(); ++i) { 190 resources->append(ResourceInfo( 191 webResources[i].url, webResources[i].isMaster, webResources[i].isManifest, webResources[i].isFallback, 192 webResources[i].isForeign, webResources[i].isExplicit, webResources[i].size)); 193 } 194 } 195 196 void ApplicationCacheHost::stopDeferringEvents() 197 { 198 RefPtr<DocumentLoader> protect(documentLoader()); 199 for (unsigned i = 0; i < m_deferredEvents.size(); ++i) { 200 const DeferredEvent& deferred = m_deferredEvents[i]; 201 dispatchDOMEvent(deferred.eventID, deferred.progressTotal, deferred.progressDone); 202 } 203 m_deferredEvents.clear(); 204 m_defersEvents = false; 205 } 206 207 void ApplicationCacheHost::dispatchDOMEvent(EventID id, int total, int done) 208 { 209 if (m_domApplicationCache) { 210 const AtomicString& eventType = ApplicationCache::toEventType(id); 211 RefPtr<Event> event; 212 if (id == PROGRESS_EVENT) 213 event = ProgressEvent::create(eventType, true, done, total); 214 else 215 event = Event::create(eventType); 216 m_domApplicationCache->dispatchEvent(event, ASSERT_NO_EXCEPTION); 217 } 218 } 219 220 ApplicationCacheHost::Status ApplicationCacheHost::status() const 221 { 222 return m_internal ? static_cast<Status>(m_internal->m_outerHost->status()) : UNCACHED; 223 } 224 225 bool ApplicationCacheHost::update() 226 { 227 return m_internal ? m_internal->m_outerHost->startUpdate() : false; 228 } 229 230 bool ApplicationCacheHost::swapCache() 231 { 232 bool success = m_internal ? m_internal->m_outerHost->swapCache() : false; 233 if (success) 234 InspectorInstrumentation::updateApplicationCacheStatus(m_documentLoader->frame()); 235 return success; 236 } 237 238 void ApplicationCacheHost::abort() 239 { 240 if (m_internal) 241 m_internal->m_outerHost->abort(); 242 } 243 244 bool ApplicationCacheHost::isApplicationCacheEnabled() 245 { 246 ASSERT(m_documentLoader->frame()); 247 return m_documentLoader->frame()->settings() 248 && m_documentLoader->frame()->settings()->offlineWebApplicationCacheEnabled(); 249 } 250 251 } // namespace WebCore 252
