src/third_party/WebKit/Source/core/loader/FrameFetchContext.cpp

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  11  * copyright notice, this list of conditions and the following disclaimer
  12  * in the documentation and/or other materials provided with the
  13  * distribution.
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  30
  31 #include "config.h"
  32 #include "core/loader/FrameFetchContext.h"
  33
  34 #include "core/dom/Document.h"
  35 #include "core/inspector/InspectorInstrumentation.h"
  36 #include "core/loader/DocumentLoader.h"
  37 #include "core/loader/FrameLoader.h"
  38 #include "core/loader/FrameLoaderClient.h"
  39 #include "core/loader/ProgressTracker.h"
  40 #include "core/frame/Frame.h"
  41 #include "core/page/Page.h"
  42 #include "core/frame/Settings.h"
  43 #include "platform/weborigin/SecurityPolicy.h"
  44
  45 namespace WebCore {
  46
  47 static const char defaultAcceptHeader[] = "text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8";
  48
  49 FrameFetchContext::FrameFetchContext(Frame* frame)
  50     : m_frame(frame)
  51 {
  52 }
  53
  54 void FrameFetchContext::reportLocalLoadFailed(const KURL& url)
  55 {
  56     FrameLoader::reportLocalLoadFailed(m_frame, url.elidedString());
  57 }
  58
  59 void FrameFetchContext::addAdditionalRequestHeaders(Document* document, ResourceRequest& request, FetchResourceType type)
  60 {
  61     bool isMainResource = type == FetchMainResource;
  62     if (!isMainResource) {
  63         String outgoingReferrer;
  64         String outgoingOrigin;
  65         if (request.httpReferrer().isNull()) {
  66             outgoingReferrer = document->outgoingReferrer();
  67             outgoingOrigin = document->outgoingOrigin();
  68         } else {
  69             outgoingReferrer = request.httpReferrer();
  70             outgoingOrigin = SecurityOrigin::createFromString(outgoingReferrer)->toString();
  71         }
  72
  73         outgoingReferrer = SecurityPolicy::generateReferrerHeader(document->referrerPolicy(), request.url(), outgoingReferrer);
  74         if (outgoingReferrer.isEmpty())
  75             request.clearHTTPReferrer();
  76         else if (!request.httpReferrer())
  77             request.setHTTPReferrer(Referrer(outgoingReferrer, document->referrerPolicy()));
  78
  79         FrameLoader::addHTTPOriginIfNeeded(request, AtomicString(outgoingOrigin));
  80     }
  81
  82     if (isMainResource && m_frame->isMainFrame())
  83         request.setFirstPartyForCookies(request.url());
  84     else
  85         request.setFirstPartyForCookies(m_frame->tree().top()->document()->firstPartyForCookies());
  86
  87     // The remaining modifications are only necessary for HTTP and HTTPS.
  88     if (!request.url().isEmpty() && !request.url().protocolIsInHTTPFamily())
  89         return;
  90
  91     m_frame->loader().applyUserAgent(request);
  92
  93     if (request.cachePolicy() == ReloadIgnoringCacheData) {
  94         if (m_frame->loader().loadType() == FrameLoadTypeReload) {
  95             request.setHTTPHeaderField("Cache-Control", "max-age=0");
  96         } else if (m_frame->loader().loadType() == FrameLoadTypeReloadFromOrigin) {
  97             request.setHTTPHeaderField("Cache-Control", "no-cache");
  98             request.setHTTPHeaderField("Pragma", "no-cache");
  99         }
 100     }
 101
 102     if (isMainResource)
 103         request.setHTTPAccept(defaultAcceptHeader);
 104
 105     // Default to sending an empty Origin header if one hasn't been set yet.
 106     FrameLoader::addHTTPOriginIfNeeded(request, nullAtom);
 107 }
 108
 109 CachePolicy FrameFetchContext::cachePolicy(Document* document) const
 110 {
 111     if (document && document->loadEventFinished())
 112         return CachePolicyVerify;
 113
 114     FrameLoadType loadType = m_frame->loader().loadType();
 115     if (loadType == FrameLoadTypeReloadFromOrigin)
 116         return CachePolicyReload;
 117
 118     if (Frame* parentFrame = m_frame->tree().parent()) {
 119         CachePolicy parentCachePolicy = parentFrame->loader().fetchContext().cachePolicy(parentFrame->document());
 120         if (parentCachePolicy != CachePolicyVerify)
 121             return parentCachePolicy;
 122     }
 123
 124     if (loadType == FrameLoadTypeReload)
 125         return CachePolicyRevalidate;
 126
 127     DocumentLoader* loader = document ? document->loader() : 0;
 128     if (loader && loader->request().cachePolicy() == ReturnCacheDataElseLoad)
 129         return CachePolicyHistoryBuffer;
 130     return CachePolicyVerify;
 131
 132 }
 133
 134 // FIXME(http://crbug.com/274173):
 135 // |loader| can be null if the resource is loaded from imported document.
 136 // This means inspector, which uses DocumentLoader as an grouping entity,
 137 // cannot see imported documents.
 138 inline DocumentLoader* FrameFetchContext::ensureLoader(DocumentLoader* loader)
 139 {
 140     return loader ? loader : m_frame->loader().documentLoader();
 141 }
 142
 143 void FrameFetchContext::dispatchDidChangeResourcePriority(unsigned long identifier, ResourceLoadPriority loadPriority)
 144 {
 145     m_frame->loader().client()->dispatchDidChangeResourcePriority(identifier, loadPriority);
 146 }
 147
 148 void FrameFetchContext::dispatchWillSendRequest(DocumentLoader* loader, unsigned long identifier, ResourceRequest& request, const ResourceResponse& redirectResponse, const FetchInitiatorInfo& initiatorInfo)
 149 {
 150     m_frame->loader().applyUserAgent(request);
 151     m_frame->loader().client()->dispatchWillSendRequest(loader, identifier, request, redirectResponse);
 152     InspectorInstrumentation::willSendRequest(m_frame, identifier, ensureLoader(loader), request, redirectResponse, initiatorInfo);
 153 }
 154
 155 void FrameFetchContext::dispatchDidLoadResourceFromMemoryCache(const ResourceRequest& request, const ResourceResponse& response)
 156 {
 157     m_frame->loader().client()->dispatchDidLoadResourceFromMemoryCache(request, response);
 158 }
 159
 160 void FrameFetchContext::dispatchDidReceiveResponse(DocumentLoader* loader, unsigned long identifier, const ResourceResponse& r, ResourceLoader* resourceLoader)
 161 {
 162     if (Page* page = m_frame->page())
 163         page->progress().incrementProgress(identifier, r);
 164     m_frame->loader().client()->dispatchDidReceiveResponse(loader, identifier, r);
 165     InspectorInstrumentation::didReceiveResourceResponse(m_frame, identifier, ensureLoader(loader), r, resourceLoader);
 166 }
 167
 168 void FrameFetchContext::dispatchDidReceiveData(DocumentLoader*, unsigned long identifier, const char* data, int dataLength, int encodedDataLength)
 169 {
 170     if (Page* page = m_frame->page())
 171         page->progress().incrementProgress(identifier, data, dataLength);
 172     InspectorInstrumentation::didReceiveData(m_frame, identifier, data, dataLength, encodedDataLength);
 173 }
 174
 175 void FrameFetchContext::dispatchDidDownloadData(DocumentLoader*, unsigned long identifier, int dataLength, int encodedDataLength)
 176 {
 177     if (Page* page = m_frame->page())
 178         page->progress().incrementProgress(identifier, 0, dataLength);
 179     InspectorInstrumentation::didReceiveData(m_frame, identifier, 0, dataLength, encodedDataLength);
 180 }
 181
 182 void FrameFetchContext::dispatchDidFinishLoading(DocumentLoader* loader, unsigned long identifier, double finishTime, int64_t encodedDataLength)
 183 {
 184     if (Page* page = m_frame->page())
 185         page->progress().completeProgress(identifier);
 186     m_frame->loader().client()->dispatchDidFinishLoading(loader, identifier);
 187
 188     InspectorInstrumentation::didFinishLoading(m_frame, identifier, ensureLoader(loader), finishTime, encodedDataLength);
 189 }
 190
 191 void FrameFetchContext::dispatchDidFail(DocumentLoader* loader, unsigned long identifier, const ResourceError& error)
 192 {
 193     if (Page* page = m_frame->page())
 194         page->progress().completeProgress(identifier);
 195     InspectorInstrumentation::didFailLoading(m_frame, identifier, error);
 196 }
 197
 198 void FrameFetchContext::sendRemainingDelegateMessages(DocumentLoader* loader, unsigned long identifier, const ResourceResponse& response, int dataLength)
 199 {
 200     if (!response.isNull())
 201         dispatchDidReceiveResponse(ensureLoader(loader), identifier, response);
 202
 203     if (dataLength > 0)
 204         dispatchDidReceiveData(ensureLoader(loader), identifier, 0, dataLength, 0);
 205
 206     dispatchDidFinishLoading(ensureLoader(loader), identifier, 0, 0);
 207 }
 208
 209 } // namespace WebCore