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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/FrameConsole.h"
     36 #include "core/frame/LocalFrame.h"
     37 #include "core/inspector/InspectorInstrumentation.h"
     38 #include "core/inspector/InspectorTraceEvents.h"
     39 #include "core/loader/DocumentLoader.h"
     40 #include "core/loader/FrameLoader.h"
     41 #include "core/loader/FrameLoaderClient.h"
     42 #include "core/loader/ProgressTracker.h"
     43 #include "core/page/Page.h"
     44 #include "core/frame/Settings.h"
     45 #include "platform/weborigin/SecurityPolicy.h"
     46 
     47 namespace blink {
     48 
     49 FrameFetchContext::FrameFetchContext(LocalFrame* 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         ReferrerPolicy referrerPolicy;
     65         String outgoingOrigin;
     66         if (request.httpReferrer().isNull()) {
     67             outgoingReferrer = document->outgoingReferrer();
     68             referrerPolicy = document->referrerPolicy();
     69             outgoingOrigin = document->outgoingOrigin();
     70         } else {
     71             outgoingReferrer = request.httpReferrer();
     72             referrerPolicy = request.referrerPolicy();
     73             outgoingOrigin = SecurityOrigin::createFromString(outgoingReferrer)->toString();
     74         }
     75 
     76         outgoingReferrer = SecurityPolicy::generateReferrerHeader(referrerPolicy, request.url(), outgoingReferrer);
     77         if (outgoingReferrer.isEmpty())
     78             request.clearHTTPReferrer();
     79         else
     80             request.setHTTPReferrer(Referrer(outgoingReferrer, referrerPolicy));
     81 
     82         request.addHTTPOriginIfNeeded(AtomicString(outgoingOrigin));
     83     }
     84 
     85     // The remaining modifications are only necessary for HTTP and HTTPS.
     86     if (!request.url().isEmpty() && !request.url().protocolIsInHTTPFamily())
     87         return;
     88 
     89     m_frame->loader().applyUserAgent(request);
     90 }
     91 
     92 void FrameFetchContext::setFirstPartyForCookies(ResourceRequest& request)
     93 {
     94     if (m_frame->tree().top()->isLocalFrame())
     95         request.setFirstPartyForCookies(toLocalFrame(m_frame->tree().top())->document()->firstPartyForCookies());
     96 }
     97 
     98 CachePolicy FrameFetchContext::cachePolicy(Document* document) const
     99 {
    100     if (document && document->loadEventFinished())
    101         return CachePolicyVerify;
    102 
    103     FrameLoadType loadType = m_frame->loader().loadType();
    104     if (loadType == FrameLoadTypeReloadFromOrigin)
    105         return CachePolicyReload;
    106 
    107     Frame* parentFrame = m_frame->tree().parent();
    108     if (parentFrame && parentFrame->isLocalFrame()) {
    109         CachePolicy parentCachePolicy = toLocalFrame(parentFrame)->loader().fetchContext().cachePolicy(toLocalFrame(parentFrame)->document());
    110         if (parentCachePolicy != CachePolicyVerify)
    111             return parentCachePolicy;
    112     }
    113 
    114     if (loadType == FrameLoadTypeReload)
    115         return CachePolicyRevalidate;
    116 
    117     DocumentLoader* loader = document ? document->loader() : 0;
    118     if (loader && loader->request().cachePolicy() == ReturnCacheDataElseLoad)
    119         return CachePolicyHistoryBuffer;
    120     return CachePolicyVerify;
    121 
    122 }
    123 
    124 // FIXME(http://crbug.com/274173):
    125 // |loader| can be null if the resource is loaded from imported document.
    126 // This means inspector, which uses DocumentLoader as an grouping entity,
    127 // cannot see imported documents.
    128 inline DocumentLoader* FrameFetchContext::ensureLoader(DocumentLoader* loader)
    129 {
    130     return loader ? loader : m_frame->loader().documentLoader();
    131 }
    132 
    133 void FrameFetchContext::dispatchDidChangeResourcePriority(unsigned long identifier, ResourceLoadPriority loadPriority, int intraPriorityValue)
    134 {
    135     m_frame->loader().client()->dispatchDidChangeResourcePriority(identifier, loadPriority, intraPriorityValue);
    136 }
    137 
    138 void FrameFetchContext::dispatchWillSendRequest(DocumentLoader* loader, unsigned long identifier, ResourceRequest& request, const ResourceResponse& redirectResponse, const FetchInitiatorInfo& initiatorInfo)
    139 {
    140     m_frame->loader().applyUserAgent(request);
    141     m_frame->loader().client()->dispatchWillSendRequest(loader, identifier, request, redirectResponse);
    142     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "ResourceSendRequest", "data", InspectorSendRequestEvent::data(identifier, m_frame, request));
    143     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline.stack"), "CallStack", "stack", InspectorCallStackEvent::currentCallStack());
    144     // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
    145     InspectorInstrumentation::willSendRequest(m_frame, identifier, ensureLoader(loader), request, redirectResponse, initiatorInfo);
    146 }
    147 
    148 void FrameFetchContext::dispatchDidLoadResourceFromMemoryCache(const ResourceRequest& request, const ResourceResponse& response)
    149 {
    150     m_frame->loader().client()->dispatchDidLoadResourceFromMemoryCache(request, response);
    151 }
    152 
    153 void FrameFetchContext::dispatchDidReceiveResponse(DocumentLoader* loader, unsigned long identifier, const ResourceResponse& r, ResourceLoader* resourceLoader)
    154 {
    155     m_frame->loader().progress().incrementProgress(identifier, r);
    156     m_frame->loader().client()->dispatchDidReceiveResponse(loader, identifier, r);
    157     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "ResourceReceiveResponse", "data", InspectorReceiveResponseEvent::data(identifier, m_frame, r));
    158     // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
    159     DocumentLoader* documentLoader = ensureLoader(loader);
    160     InspectorInstrumentation::didReceiveResourceResponse(m_frame, identifier, documentLoader, r, resourceLoader);
    161     // It is essential that inspector gets resource response BEFORE console.
    162     m_frame->console().reportResourceResponseReceived(documentLoader, identifier, r);
    163 }
    164 
    165 void FrameFetchContext::dispatchDidReceiveData(DocumentLoader*, unsigned long identifier, const char* data, int dataLength, int encodedDataLength)
    166 {
    167     m_frame->loader().progress().incrementProgress(identifier, data, dataLength);
    168     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "ResourceReceivedData", "data", InspectorReceiveDataEvent::data(identifier, m_frame, encodedDataLength));
    169     // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
    170     InspectorInstrumentation::didReceiveData(m_frame, identifier, data, dataLength, encodedDataLength);
    171 }
    172 
    173 void FrameFetchContext::dispatchDidDownloadData(DocumentLoader*, unsigned long identifier, int dataLength, int encodedDataLength)
    174 {
    175     m_frame->loader().progress().incrementProgress(identifier, 0, dataLength);
    176     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "ResourceReceivedData", "data", InspectorReceiveDataEvent::data(identifier, m_frame, encodedDataLength));
    177     // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
    178     InspectorInstrumentation::didReceiveData(m_frame, identifier, 0, dataLength, encodedDataLength);
    179 }
    180 
    181 void FrameFetchContext::dispatchDidFinishLoading(DocumentLoader* loader, unsigned long identifier, double finishTime, int64_t encodedDataLength)
    182 {
    183     m_frame->loader().progress().completeProgress(identifier);
    184     m_frame->loader().client()->dispatchDidFinishLoading(loader, identifier);
    185 
    186     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "ResourceFinish", "data", InspectorResourceFinishEvent::data(identifier, finishTime, false));
    187     // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
    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     m_frame->loader().progress().completeProgress(identifier);
    194     TRACE_EVENT_INSTANT1(TRACE_DISABLED_BY_DEFAULT("devtools.timeline"), "ResourceFinish", "data", InspectorResourceFinishEvent::data(identifier, 0, true));
    195     // FIXME(361045): remove InspectorInstrumentation calls once DevTools Timeline migrates to tracing.
    196     InspectorInstrumentation::didFailLoading(m_frame, identifier, error);
    197 }
    198 
    199 void FrameFetchContext::sendRemainingDelegateMessages(DocumentLoader* loader, unsigned long identifier, const ResourceResponse& response, int dataLength)
    200 {
    201     if (!response.isNull())
    202         dispatchDidReceiveResponse(ensureLoader(loader), identifier, response);
    203 
    204     if (dataLength > 0)
    205         dispatchDidReceiveData(ensureLoader(loader), identifier, 0, dataLength, 0);
    206 
    207     dispatchDidFinishLoading(ensureLoader(loader), identifier, 0, 0);
    208 }
    209 
    210 void FrameFetchContext::trace(Visitor* visitor)
    211 {
    212     visitor->trace(m_frame);
    213     FetchContext::trace(visitor);
    214 }
    215 
    216 } // namespace blink
    217