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      1 /*
      2  * Copyright (C) 2013 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/FrameFetchContext.h"
     33 
     34 #include "core/dom/Document.h"
     35 #include "core/frame/LocalFrame.h"
     36 #include "core/inspector/InspectorInstrumentation.h"
     37 #include "core/inspector/InspectorTraceEvents.h"
     38 #include "core/loader/DocumentLoader.h"
     39 #include "core/loader/FrameLoader.h"
     40 #include "core/loader/FrameLoaderClient.h"
     41 #include "core/loader/ProgressTracker.h"
     42 #include "core/page/Page.h"
     43 #include "core/frame/Settings.h"
     44 #include "platform/weborigin/SecurityPolicy.h"
     45 
     46 namespace WebCore {
     47 
     48 FrameFetchContext::FrameFetchContext(LocalFrame* frame)
     49     : m_frame(frame)
     50 {
     51 }
     52 
     53 void FrameFetchContext::reportLocalLoadFailed(const KURL& url)
     54 {
     55     FrameLoader::reportLocalLoadFailed(m_frame, url.elidedString());
     56 }
     57 
     58 void FrameFetchContext::addAdditionalRequestHeaders(Document* document, ResourceRequest& request, FetchResourceType type)
     59 {
     60     bool isMainResource = type == FetchMainResource;
     61     if (!isMainResource) {
     62         String outgoingReferrer;
     63         String outgoingOrigin;
     64         if (request.httpReferrer().isNull()) {
     65             outgoingReferrer = document->outgoingReferrer();
     66             outgoingOrigin = document->outgoingOrigin();
     67         } else {
     68             outgoingReferrer = request.httpReferrer();
     69             outgoingOrigin = SecurityOrigin::createFromString(outgoingReferrer)->toString();
     70         }
     71 
     72         outgoingReferrer = SecurityPolicy::generateReferrerHeader(document->referrerPolicy(), request.url(), outgoingReferrer);
     73         if (outgoingReferrer.isEmpty())
     74             request.clearHTTPReferrer();
     75         else if (!request.httpReferrer())
     76             request.setHTTPReferrer(Referrer(outgoingReferrer, document->referrerPolicy()));
     77 
     78         FrameLoader::addHTTPOriginIfNeeded(request, AtomicString(outgoingOrigin));
     79     }
     80 
     81     // The remaining modifications are only necessary for HTTP and HTTPS.
     82     if (!request.url().isEmpty() && !request.url().protocolIsInHTTPFamily())
     83         return;
     84 
     85     m_frame->loader().applyUserAgent(request);
     86 
     87     // Default to sending an empty Origin header if one hasn't been set yet.
     88     FrameLoader::addHTTPOriginIfNeeded(request, nullAtom);
     89 }
     90 
     91 void FrameFetchContext::setFirstPartyForCookies(ResourceRequest& request)
     92 {
     93     if (m_frame->tree().top()->isLocalFrame())
     94         request.setFirstPartyForCookies(toLocalFrame(m_frame->tree().top())->document()->firstPartyForCookies());
     95 }
     96 
     97 CachePolicy FrameFetchContext::cachePolicy(Document* document) const
     98 {
     99     if (document && document->loadEventFinished())
    100         return CachePolicyVerify;
    101 
    102     FrameLoadType loadType = m_frame->loader().loadType();
    103     if (loadType == FrameLoadTypeReloadFromOrigin)
    104         return CachePolicyReload;
    105 
    106     Frame* parentFrame = m_frame->tree().parent();
    107     if (parentFrame && parentFrame->isLocalFrame()) {
    108         CachePolicy parentCachePolicy = toLocalFrame(parentFrame)->loader().fetchContext().cachePolicy(toLocalFrame(parentFrame)->document());
    109         if (parentCachePolicy != CachePolicyVerify)
    110             return parentCachePolicy;
    111     }
    112 
    113     if (loadType == FrameLoadTypeReload)
    114         return CachePolicyRevalidate;
    115 
    116     DocumentLoader* loader = document ? document->loader() : 0;
    117     if (loader && loader->request().cachePolicy() == ReturnCacheDataElseLoad)
    118         return CachePolicyHistoryBuffer;
    119     return CachePolicyVerify;
    120 
    121 }
    122 
    123 // FIXME(http://crbug.com/274173):
    124 // |loader| can be null if the resource is loaded from imported document.
    125 // This means inspector, which uses DocumentLoader as an grouping entity,
    126 // cannot see imported documents.
    127 inline DocumentLoader* FrameFetchContext::ensureLoader(DocumentLoader* loader)
    128 {
    129     return loader ? loader : m_frame->loader().documentLoader();
    130 }
    131 
    132 void FrameFetchContext::dispatchDidChangeResourcePriority(unsigned long identifier, ResourceLoadPriority loadPriority, int intraPriorityValue)
    133 {
    134     m_frame->loader().client()->dispatchDidChangeResourcePriority(identifier, loadPriority, intraPriorityValue);
    135 }
    136 
    137 void FrameFetchContext::dispatchWillSendRequest(DocumentLoader* loader, unsigned long identifier, ResourceRequest& request, const ResourceResponse& redirectResponse, const FetchInitiatorInfo& initiatorInfo)
    138 {
    139     m_frame->loader().applyUserAgent(request);
    140     m_frame->loader().client()->dispatchWillSendRequest(loader, identifier, request, redirectResponse);
    141     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "ResourceSendRequest", "data", InspectorSendRequestEvent::data(identifier, m_frame, request));
    142     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline.stack"), "CallStack", "stack", InspectorCallStackEvent::currentCallStack());
    143     // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
    144     InspectorInstrumentation::willSendRequest(m_frame, identifier, ensureLoader(loader), request, redirectResponse, initiatorInfo);
    145 }
    146 
    147 void FrameFetchContext::dispatchDidLoadResourceFromMemoryCache(const ResourceRequest& request, const ResourceResponse& response)
    148 {
    149     m_frame->loader().client()->dispatchDidLoadResourceFromMemoryCache(request, response);
    150 }
    151 
    152 void FrameFetchContext::dispatchDidReceiveResponse(DocumentLoader* loader, unsigned long identifier, const ResourceResponse& r, ResourceLoader* resourceLoader)
    153 {
    154     m_frame->loader().progress().incrementProgress(identifier, r);
    155     m_frame->loader().client()->dispatchDidReceiveResponse(loader, identifier, r);
    156     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "ResourceReceiveResponse", "data", InspectorReceiveResponseEvent::data(identifier, m_frame, r));
    157     // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
    158     InspectorInstrumentation::didReceiveResourceResponse(m_frame, identifier, ensureLoader(loader), r, resourceLoader);
    159 }
    160 
    161 void FrameFetchContext::dispatchDidReceiveData(DocumentLoader*, unsigned long identifier, const char* data, int dataLength, int encodedDataLength)
    162 {
    163     m_frame->loader().progress().incrementProgress(identifier, data, dataLength);
    164     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "ResourceReceivedData", "data", InspectorReceiveDataEvent::data(identifier, m_frame, encodedDataLength));
    165     // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
    166     InspectorInstrumentation::didReceiveData(m_frame, identifier, data, dataLength, encodedDataLength);
    167 }
    168 
    169 void FrameFetchContext::dispatchDidDownloadData(DocumentLoader*, unsigned long identifier, int dataLength, int encodedDataLength)
    170 {
    171     m_frame->loader().progress().incrementProgress(identifier, 0, dataLength);
    172     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "ResourceReceivedData", "data", InspectorReceiveDataEvent::data(identifier, m_frame, encodedDataLength));
    173     // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
    174     InspectorInstrumentation::didReceiveData(m_frame, identifier, 0, dataLength, encodedDataLength);
    175 }
    176 
    177 void FrameFetchContext::dispatchDidFinishLoading(DocumentLoader* loader, unsigned long identifier, double finishTime, int64_t encodedDataLength)
    178 {
    179     m_frame->loader().progress().completeProgress(identifier);
    180     m_frame->loader().client()->dispatchDidFinishLoading(loader, identifier);
    181 
    182     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "ResourceFinish", "data", InspectorResourceFinishEvent::data(identifier, finishTime, false));
    183     // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
    184     InspectorInstrumentation::didFinishLoading(m_frame, identifier, ensureLoader(loader), finishTime, encodedDataLength);
    185 }
    186 
    187 void FrameFetchContext::dispatchDidFail(DocumentLoader* loader, unsigned long identifier, const ResourceError& error)
    188 {
    189     m_frame->loader().progress().completeProgress(identifier);
    190     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "ResourceFinish", "data", InspectorResourceFinishEvent::data(identifier, 0, true));
    191     // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
    192     InspectorInstrumentation::didFailLoading(m_frame, identifier, error);
    193 }
    194 
    195 void FrameFetchContext::sendRemainingDelegateMessages(DocumentLoader* loader, unsigned long identifier, const ResourceResponse& response, int dataLength)
    196 {
    197     if (!response.isNull())
    198         dispatchDidReceiveResponse(ensureLoader(loader), identifier, response);
    199 
    200     if (dataLength > 0)
    201         dispatchDidReceiveData(ensureLoader(loader), identifier, 0, dataLength, 0);
    202 
    203     dispatchDidFinishLoading(ensureLoader(loader), identifier, 0, 0);
    204 }
    205 
    206 } // namespace WebCore
    207