1/*
2 * Copyright (C) 2011 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/inspector/InspectorResourceAgent.h"
33
34#include "InspectorFrontend.h"
35#include "bindings/v8/ExceptionStatePlaceholder.h"
36#include "bindings/v8/ScriptCallStackFactory.h"
37#include "core/dom/Document.h"
38#include "core/dom/ScriptableDocumentParser.h"
39#include "core/inspector/IdentifiersFactory.h"
40#include "core/inspector/InspectorClient.h"
41#include "core/inspector/InspectorOverlay.h"
42#include "core/inspector/InspectorPageAgent.h"
43#include "core/inspector/InspectorState.h"
44#include "core/inspector/InstrumentingAgents.h"
45#include "core/inspector/NetworkResourcesData.h"
46#include "core/inspector/ScriptCallStack.h"
47#include "core/loader/DocumentLoader.h"
48#include "core/loader/DocumentThreadableLoader.h"
49#include "core/loader/FrameLoader.h"
50#include "core/loader/ResourceLoader.h"
51#include "core/loader/ThreadableLoader.h"
52#include "core/loader/ThreadableLoaderClient.h"
53#include "core/loader/cache/FetchInitiatorInfo.h"
54#include "core/loader/cache/MemoryCache.h"
55#include "core/loader/cache/Resource.h"
56#include "core/page/Frame.h"
57#include "core/page/Page.h"
58#include "core/platform/JSONValues.h"
59#include "core/platform/network/HTTPHeaderMap.h"
60#include "core/platform/network/ResourceError.h"
61#include "core/platform/network/ResourceRequest.h"
62#include "core/platform/network/ResourceResponse.h"
63#include "core/xml/XMLHttpRequest.h"
64#include "modules/websockets/WebSocketFrame.h"
65#include "modules/websockets/WebSocketHandshakeRequest.h"
66#include "modules/websockets/WebSocketHandshakeResponse.h"
67#include "weborigin/KURL.h"
68#include "wtf/CurrentTime.h"
69#include "wtf/RefPtr.h"
70
71typedef WebCore::InspectorBackendDispatcher::NetworkCommandHandler::LoadResourceForFrontendCallback LoadResourceForFrontendCallback;
72
73namespace WebCore {
74
75namespace ResourceAgentState {
76static const char resourceAgentEnabled[] = "resourceAgentEnabled";
77static const char extraRequestHeaders[] = "extraRequestHeaders";
78static const char cacheDisabled[] = "cacheDisabled";
79static const char userAgentOverride[] = "userAgentOverride";
80}
81
82namespace {
83
84static PassRefPtr<JSONObject> buildObjectForHeaders(const HTTPHeaderMap& headers)
85{
86    RefPtr<JSONObject> headersObject = JSONObject::create();
87    HTTPHeaderMap::const_iterator end = headers.end();
88    for (HTTPHeaderMap::const_iterator it = headers.begin(); it != end; ++it)
89        headersObject->setString(it->key.string(), it->value);
90    return headersObject;
91}
92
93class InspectorThreadableLoaderClient : public ThreadableLoaderClient {
94    WTF_MAKE_NONCOPYABLE(InspectorThreadableLoaderClient);
95public:
96    InspectorThreadableLoaderClient(PassRefPtr<LoadResourceForFrontendCallback> callback)
97        : m_callback(callback)
98        , m_statusCode(0) { }
99
100    virtual ~InspectorThreadableLoaderClient() { }
101
102    virtual void didReceiveResponse(unsigned long identifier, const ResourceResponse& response)
103    {
104        WTF::TextEncoding textEncoding(response.textEncodingName());
105        bool useDetector = false;
106        if (!textEncoding.isValid()) {
107            textEncoding = UTF8Encoding();
108            useDetector = true;
109        }
110        m_decoder = TextResourceDecoder::create("text/plain", textEncoding, useDetector);
111        m_statusCode = response.httpStatusCode();
112        m_responseHeaders = response.httpHeaderFields();
113    }
114
115    virtual void didReceiveData(const char* data, int dataLength)
116    {
117        if (!dataLength)
118            return;
119
120        if (dataLength == -1)
121            dataLength = strlen(data);
122
123        m_responseText = m_responseText.concatenateWith(m_decoder->decode(data, dataLength));
124    }
125
126    virtual void didFinishLoading(unsigned long /*identifier*/, double /*finishTime*/)
127    {
128        if (m_decoder)
129            m_responseText = m_responseText.concatenateWith(m_decoder->flush());
130        m_callback->sendSuccess(m_statusCode, buildObjectForHeaders(m_responseHeaders), m_responseText.flattenToString());
131        dispose();
132    }
133
134    virtual void didFail(const ResourceError&)
135    {
136        m_callback->sendFailure("Loading resource for inspector failed");
137        dispose();
138    }
139
140    virtual void didFailRedirectCheck()
141    {
142        m_callback->sendFailure("Loading resource for inspector failed redirect check");
143        dispose();
144    }
145
146    void didFailLoaderCreation()
147    {
148        m_callback->sendFailure("Couldn't create a loader");
149        dispose();
150    }
151
152    void setLoader(PassRefPtr<ThreadableLoader> loader)
153    {
154        m_loader = loader;
155    }
156
157private:
158    void dispose()
159    {
160        m_loader = 0;
161        delete this;
162    }
163
164    RefPtr<LoadResourceForFrontendCallback> m_callback;
165    RefPtr<ThreadableLoader> m_loader;
166    RefPtr<TextResourceDecoder> m_decoder;
167    ScriptString m_responseText;
168    int m_statusCode;
169    HTTPHeaderMap m_responseHeaders;
170};
171
172KURL urlWithoutFragment(const KURL& url)
173{
174    KURL result = url;
175    result.removeFragmentIdentifier();
176    return result;
177}
178
179} // namespace
180
181void InspectorResourceAgent::setFrontend(InspectorFrontend* frontend)
182{
183    m_frontend = frontend->network();
184}
185
186void InspectorResourceAgent::clearFrontend()
187{
188    m_frontend = 0;
189    ErrorString error;
190    disable(&error);
191}
192
193void InspectorResourceAgent::restore()
194{
195    if (m_state->getBoolean(ResourceAgentState::resourceAgentEnabled))
196        enable();
197}
198
199static PassRefPtr<TypeBuilder::Network::ResourceTiming> buildObjectForTiming(const ResourceLoadTiming& timing, DocumentLoader* loader)
200{
201    return TypeBuilder::Network::ResourceTiming::create()
202        .setRequestTime(loader->timing()->monotonicTimeToPseudoWallTime(timing.requestTime))
203        .setProxyStart(timing.calculateMillisecondDelta(timing.proxyStart))
204        .setProxyEnd(timing.calculateMillisecondDelta(timing.proxyEnd))
205        .setDnsStart(timing.calculateMillisecondDelta(timing.dnsStart))
206        .setDnsEnd(timing.calculateMillisecondDelta(timing.dnsEnd))
207        .setConnectStart(timing.calculateMillisecondDelta(timing.connectStart))
208        .setConnectEnd(timing.calculateMillisecondDelta(timing.connectEnd))
209        .setSslStart(timing.calculateMillisecondDelta(timing.sslStart))
210        .setSslEnd(timing.calculateMillisecondDelta(timing.sslEnd))
211        .setSendStart(timing.calculateMillisecondDelta(timing.sendStart))
212        .setSendEnd(timing.calculateMillisecondDelta(timing.sendEnd))
213        .setReceiveHeadersEnd(timing.calculateMillisecondDelta(timing.receiveHeadersEnd))
214        .release();
215}
216
217static PassRefPtr<TypeBuilder::Network::Request> buildObjectForResourceRequest(const ResourceRequest& request)
218{
219    RefPtr<TypeBuilder::Network::Request> requestObject = TypeBuilder::Network::Request::create()
220        .setUrl(urlWithoutFragment(request.url()).string())
221        .setMethod(request.httpMethod())
222        .setHeaders(buildObjectForHeaders(request.httpHeaderFields()));
223    if (request.httpBody() && !request.httpBody()->isEmpty()) {
224        Vector<char> bytes;
225        request.httpBody()->flatten(bytes);
226        requestObject->setPostData(String::fromUTF8WithLatin1Fallback(bytes.data(), bytes.size()));
227    }
228    return requestObject;
229}
230
231static PassRefPtr<TypeBuilder::Network::Response> buildObjectForResourceResponse(const ResourceResponse& response, DocumentLoader* loader)
232{
233    if (response.isNull())
234        return 0;
235
236
237    double status;
238    String statusText;
239    if (response.resourceLoadInfo() && response.resourceLoadInfo()->httpStatusCode) {
240        status = response.resourceLoadInfo()->httpStatusCode;
241        statusText = response.resourceLoadInfo()->httpStatusText;
242    } else {
243        status = response.httpStatusCode();
244        statusText = response.httpStatusText();
245    }
246    RefPtr<JSONObject> headers;
247    if (response.resourceLoadInfo())
248        headers = buildObjectForHeaders(response.resourceLoadInfo()->responseHeaders);
249    else
250        headers = buildObjectForHeaders(response.httpHeaderFields());
251
252    RefPtr<TypeBuilder::Network::Response> responseObject = TypeBuilder::Network::Response::create()
253        .setUrl(urlWithoutFragment(response.url()).string())
254        .setStatus(status)
255        .setStatusText(statusText)
256        .setHeaders(headers)
257        .setMimeType(response.mimeType())
258        .setConnectionReused(response.connectionReused())
259        .setConnectionId(response.connectionID());
260
261    responseObject->setFromDiskCache(response.wasCached());
262    if (response.resourceLoadTiming())
263        responseObject->setTiming(buildObjectForTiming(*response.resourceLoadTiming(), loader));
264
265    if (response.resourceLoadInfo()) {
266        if (!response.resourceLoadInfo()->responseHeadersText.isEmpty())
267            responseObject->setHeadersText(response.resourceLoadInfo()->responseHeadersText);
268
269        responseObject->setRequestHeaders(buildObjectForHeaders(response.resourceLoadInfo()->requestHeaders));
270        if (!response.resourceLoadInfo()->requestHeadersText.isEmpty())
271            responseObject->setRequestHeadersText(response.resourceLoadInfo()->requestHeadersText);
272    }
273
274    return responseObject;
275}
276
277InspectorResourceAgent::~InspectorResourceAgent()
278{
279    if (m_state->getBoolean(ResourceAgentState::resourceAgentEnabled)) {
280        ErrorString error;
281        disable(&error);
282    }
283    ASSERT(!m_instrumentingAgents->inspectorResourceAgent());
284}
285
286void InspectorResourceAgent::willSendRequest(unsigned long identifier, DocumentLoader* loader, ResourceRequest& request, const ResourceResponse& redirectResponse, const FetchInitiatorInfo& initiatorInfo)
287{
288    String requestId = IdentifiersFactory::requestId(identifier);
289    m_resourcesData->resourceCreated(requestId, m_pageAgent->loaderId(loader));
290
291    RefPtr<JSONObject> headers = m_state->getObject(ResourceAgentState::extraRequestHeaders);
292
293    if (headers) {
294        JSONObject::const_iterator end = headers->end();
295        for (JSONObject::const_iterator it = headers->begin(); it != end; ++it) {
296            String value;
297            if (it->value->asString(&value))
298                request.setHTTPHeaderField(it->key, value);
299        }
300    }
301
302    request.setReportLoadTiming(true);
303    request.setReportRawHeaders(true);
304
305    if (m_state->getBoolean(ResourceAgentState::cacheDisabled)) {
306        request.setHTTPHeaderField("Pragma", "no-cache");
307        request.setCachePolicy(ReloadIgnoringCacheData);
308        request.setHTTPHeaderField("Cache-Control", "no-cache");
309    }
310
311    RefPtr<TypeBuilder::Network::Initiator> initiatorObject = buildInitiatorObject(loader->frame() ? loader->frame()->document() : 0, initiatorInfo);
312    m_frontend->requestWillBeSent(requestId, m_pageAgent->frameId(loader->frame()), m_pageAgent->loaderId(loader), urlWithoutFragment(loader->url()).string(), buildObjectForResourceRequest(request), currentTime(), initiatorObject, buildObjectForResourceResponse(redirectResponse, loader));
313}
314
315void InspectorResourceAgent::markResourceAsCached(unsigned long identifier)
316{
317    m_frontend->requestServedFromCache(IdentifiersFactory::requestId(identifier));
318}
319
320void InspectorResourceAgent::didReceiveResourceResponse(unsigned long identifier, DocumentLoader* loader, const ResourceResponse& response, ResourceLoader* resourceLoader)
321{
322    if (!loader)
323        return;
324
325    String requestId = IdentifiersFactory::requestId(identifier);
326    RefPtr<TypeBuilder::Network::Response> resourceResponse = buildObjectForResourceResponse(response, loader);
327
328    bool isNotModified = response.httpStatusCode() == 304;
329
330    Resource* cachedResource = 0;
331    if (resourceLoader && !isNotModified)
332        cachedResource = resourceLoader->cachedResource();
333    if (!cachedResource)
334        cachedResource = InspectorPageAgent::cachedResource(loader->frame(), response.url());
335
336    if (cachedResource) {
337        // Use mime type from cached resource in case the one in response is empty.
338        if (resourceResponse && response.mimeType().isEmpty())
339            resourceResponse->setString(TypeBuilder::Network::Response::MimeType, cachedResource->response().mimeType());
340        m_resourcesData->addResource(requestId, cachedResource);
341    }
342
343    InspectorPageAgent::ResourceType type = cachedResource ? InspectorPageAgent::cachedResourceType(*cachedResource) : InspectorPageAgent::OtherResource;
344    if (m_loadingXHRSynchronously || m_resourcesData->resourceType(requestId) == InspectorPageAgent::XHRResource)
345        type = InspectorPageAgent::XHRResource;
346    else if (m_resourcesData->resourceType(requestId) == InspectorPageAgent::ScriptResource)
347        type = InspectorPageAgent::ScriptResource;
348    else if (equalIgnoringFragmentIdentifier(response.url(), loader->url()) && !loader->isCommitted())
349        type = InspectorPageAgent::DocumentResource;
350
351    m_resourcesData->responseReceived(requestId, m_pageAgent->frameId(loader->frame()), response);
352    m_resourcesData->setResourceType(requestId, type);
353    m_frontend->responseReceived(requestId, m_pageAgent->frameId(loader->frame()), m_pageAgent->loaderId(loader), currentTime(), InspectorPageAgent::resourceTypeJson(type), resourceResponse);
354    // If we revalidated the resource and got Not modified, send content length following didReceiveResponse
355    // as there will be no calls to didReceiveData from the network stack.
356    if (isNotModified && cachedResource && cachedResource->encodedSize())
357        didReceiveData(identifier, 0, cachedResource->encodedSize(), 0);
358}
359
360static bool isErrorStatusCode(int statusCode)
361{
362    return statusCode >= 400;
363}
364
365void InspectorResourceAgent::didReceiveData(unsigned long identifier, const char* data, int dataLength, int encodedDataLength)
366{
367    String requestId = IdentifiersFactory::requestId(identifier);
368
369    if (data) {
370        NetworkResourcesData::ResourceData const* resourceData = m_resourcesData->data(requestId);
371        if (resourceData && !m_loadingXHRSynchronously && (!resourceData->cachedResource() || resourceData->cachedResource()->dataBufferingPolicy() == DoNotBufferData || isErrorStatusCode(resourceData->httpStatusCode())))
372            m_resourcesData->maybeAddResourceData(requestId, data, dataLength);
373    }
374
375    m_frontend->dataReceived(requestId, currentTime(), dataLength, encodedDataLength);
376}
377
378void InspectorResourceAgent::didFinishLoading(unsigned long identifier, DocumentLoader* loader, double monotonicFinishTime)
379{
380    double finishTime = 0.0;
381    // FIXME: Expose all of the timing details to inspector and have it calculate finishTime.
382    if (monotonicFinishTime)
383        finishTime = loader->timing()->monotonicTimeToPseudoWallTime(monotonicFinishTime);
384
385    String requestId = IdentifiersFactory::requestId(identifier);
386    m_resourcesData->maybeDecodeDataToContent(requestId);
387    if (!finishTime)
388        finishTime = currentTime();
389    m_frontend->loadingFinished(requestId, finishTime);
390}
391
392void InspectorResourceAgent::didFailLoading(unsigned long identifier, DocumentLoader* loader, const ResourceError& error)
393{
394    String requestId = IdentifiersFactory::requestId(identifier);
395    bool canceled = error.isCancellation();
396    m_frontend->loadingFailed(requestId, currentTime(), error.localizedDescription(), canceled ? &canceled : 0);
397}
398
399void InspectorResourceAgent::scriptImported(unsigned long identifier, const String& sourceString)
400{
401    m_resourcesData->setResourceContent(IdentifiersFactory::requestId(identifier), sourceString);
402}
403
404void InspectorResourceAgent::didReceiveScriptResponse(unsigned long identifier)
405{
406    m_resourcesData->setResourceType(IdentifiersFactory::requestId(identifier), InspectorPageAgent::ScriptResource);
407}
408
409void InspectorResourceAgent::documentThreadableLoaderStartedLoadingForClient(unsigned long identifier, ThreadableLoaderClient* client)
410{
411    if (!client)
412        return;
413
414    PendingXHRReplayDataMap::iterator it = m_pendingXHRReplayData.find(client);
415    if (it == m_pendingXHRReplayData.end())
416        return;
417
418    XHRReplayData* xhrReplayData = it->value.get();
419    String requestId = IdentifiersFactory::requestId(identifier);
420    m_resourcesData->setXHRReplayData(requestId, xhrReplayData);
421}
422
423void InspectorResourceAgent::willLoadXHR(ThreadableLoaderClient* client, const String& method, const KURL& url, bool async, PassRefPtr<FormData> formData, const HTTPHeaderMap& headers, bool includeCredentials)
424{
425    RefPtr<XHRReplayData> xhrReplayData = XHRReplayData::create(method, urlWithoutFragment(url), async, formData, includeCredentials);
426    HTTPHeaderMap::const_iterator end = headers.end();
427    for (HTTPHeaderMap::const_iterator it = headers.begin(); it!= end; ++it)
428        xhrReplayData->addHeader(it->key, it->value);
429    m_pendingXHRReplayData.set(client, xhrReplayData);
430}
431
432void InspectorResourceAgent::didFailXHRLoading(ThreadableLoaderClient* client)
433{
434    m_pendingXHRReplayData.remove(client);
435}
436
437void InspectorResourceAgent::didFinishXHRLoading(ThreadableLoaderClient* client, unsigned long identifier, ScriptString sourceString, const String&, const String&, unsigned)
438{
439    // For Asynchronous XHRs, the inspector can grab the data directly off of the Resource. For sync XHRs, we need to
440    // provide the data here, since no Resource was involved.
441    if (m_loadingXHRSynchronously)
442        m_resourcesData->setResourceContent(IdentifiersFactory::requestId(identifier), sourceString.flattenToString());
443    m_pendingXHRReplayData.remove(client);
444}
445
446void InspectorResourceAgent::didReceiveXHRResponse(unsigned long identifier)
447{
448    m_resourcesData->setResourceType(IdentifiersFactory::requestId(identifier), InspectorPageAgent::XHRResource);
449}
450
451void InspectorResourceAgent::willLoadXHRSynchronously()
452{
453    m_loadingXHRSynchronously = true;
454}
455
456void InspectorResourceAgent::didLoadXHRSynchronously()
457{
458    m_loadingXHRSynchronously = false;
459}
460
461void InspectorResourceAgent::willDestroyResource(Resource* cachedResource)
462{
463    Vector<String> requestIds = m_resourcesData->removeResource(cachedResource);
464    if (!requestIds.size())
465        return;
466
467    String content;
468    bool base64Encoded;
469    if (!InspectorPageAgent::cachedResourceContent(cachedResource, &content, &base64Encoded))
470        return;
471    Vector<String>::iterator end = requestIds.end();
472    for (Vector<String>::iterator it = requestIds.begin(); it != end; ++it)
473        m_resourcesData->setResourceContent(*it, content, base64Encoded);
474}
475
476void InspectorResourceAgent::applyUserAgentOverride(String* userAgent)
477{
478    String userAgentOverride = m_state->getString(ResourceAgentState::userAgentOverride);
479    if (!userAgentOverride.isEmpty())
480        *userAgent = userAgentOverride;
481}
482
483void InspectorResourceAgent::willRecalculateStyle(Document*)
484{
485    m_isRecalculatingStyle = true;
486}
487
488void InspectorResourceAgent::didRecalculateStyle()
489{
490    m_isRecalculatingStyle = false;
491    m_styleRecalculationInitiator = nullptr;
492}
493
494void InspectorResourceAgent::didScheduleStyleRecalculation(Document* document)
495{
496    if (!m_styleRecalculationInitiator)
497        m_styleRecalculationInitiator = buildInitiatorObject(document, FetchInitiatorInfo());
498}
499
500PassRefPtr<TypeBuilder::Network::Initiator> InspectorResourceAgent::buildInitiatorObject(Document* document, const FetchInitiatorInfo& initiatorInfo)
501{
502    RefPtr<ScriptCallStack> stackTrace = createScriptCallStack(ScriptCallStack::maxCallStackSizeToCapture, true);
503    if (stackTrace && stackTrace->size() > 0) {
504        RefPtr<TypeBuilder::Network::Initiator> initiatorObject = TypeBuilder::Network::Initiator::create()
505            .setType(TypeBuilder::Network::Initiator::Type::Script);
506        initiatorObject->setStackTrace(stackTrace->buildInspectorArray());
507        return initiatorObject;
508    }
509
510    if (document && document->scriptableDocumentParser()) {
511        RefPtr<TypeBuilder::Network::Initiator> initiatorObject = TypeBuilder::Network::Initiator::create()
512            .setType(TypeBuilder::Network::Initiator::Type::Parser);
513        initiatorObject->setUrl(urlWithoutFragment(document->url()).string());
514        if (TextPosition::belowRangePosition() != initiatorInfo.position)
515            initiatorObject->setLineNumber(initiatorInfo.position.m_line.oneBasedInt());
516        else
517            initiatorObject->setLineNumber(document->scriptableDocumentParser()->lineNumber().oneBasedInt());
518        return initiatorObject;
519    }
520
521    if (m_isRecalculatingStyle && m_styleRecalculationInitiator)
522        return m_styleRecalculationInitiator;
523
524    return TypeBuilder::Network::Initiator::create()
525        .setType(TypeBuilder::Network::Initiator::Type::Other)
526        .release();
527}
528
529void InspectorResourceAgent::didCreateWebSocket(Document*, unsigned long identifier, const KURL& requestURL, const String&)
530{
531    m_frontend->webSocketCreated(IdentifiersFactory::requestId(identifier), urlWithoutFragment(requestURL).string());
532}
533
534void InspectorResourceAgent::willSendWebSocketHandshakeRequest(Document*, unsigned long identifier, const WebSocketHandshakeRequest& request)
535{
536    RefPtr<TypeBuilder::Network::WebSocketRequest> requestObject = TypeBuilder::Network::WebSocketRequest::create()
537        .setHeaders(buildObjectForHeaders(request.headerFields()));
538    m_frontend->webSocketWillSendHandshakeRequest(IdentifiersFactory::requestId(identifier), currentTime(), requestObject);
539}
540
541void InspectorResourceAgent::didReceiveWebSocketHandshakeResponse(Document*, unsigned long identifier, const WebSocketHandshakeResponse& response)
542{
543    RefPtr<TypeBuilder::Network::WebSocketResponse> responseObject = TypeBuilder::Network::WebSocketResponse::create()
544        .setStatus(response.statusCode())
545        .setStatusText(response.statusText())
546        .setHeaders(buildObjectForHeaders(response.headerFields()));
547    m_frontend->webSocketHandshakeResponseReceived(IdentifiersFactory::requestId(identifier), currentTime(), responseObject);
548}
549
550void InspectorResourceAgent::didCloseWebSocket(Document*, unsigned long identifier)
551{
552    m_frontend->webSocketClosed(IdentifiersFactory::requestId(identifier), currentTime());
553}
554
555void InspectorResourceAgent::didReceiveWebSocketFrame(unsigned long identifier, const WebSocketFrame& frame)
556{
557    RefPtr<TypeBuilder::Network::WebSocketFrame> frameObject = TypeBuilder::Network::WebSocketFrame::create()
558        .setOpcode(frame.opCode)
559        .setMask(frame.masked)
560        .setPayloadData(String(frame.payload, frame.payloadLength));
561    m_frontend->webSocketFrameReceived(IdentifiersFactory::requestId(identifier), currentTime(), frameObject);
562}
563
564void InspectorResourceAgent::didSendWebSocketFrame(unsigned long identifier, const WebSocketFrame& frame)
565{
566    RefPtr<TypeBuilder::Network::WebSocketFrame> frameObject = TypeBuilder::Network::WebSocketFrame::create()
567        .setOpcode(frame.opCode)
568        .setMask(frame.masked)
569        .setPayloadData(String(frame.payload, frame.payloadLength));
570    m_frontend->webSocketFrameSent(IdentifiersFactory::requestId(identifier), currentTime(), frameObject);
571}
572
573void InspectorResourceAgent::didReceiveWebSocketFrameError(unsigned long identifier, const String& errorMessage)
574{
575    m_frontend->webSocketFrameError(IdentifiersFactory::requestId(identifier), currentTime(), errorMessage);
576}
577
578// called from Internals for layout test purposes.
579void InspectorResourceAgent::setResourcesDataSizeLimitsFromInternals(int maximumResourcesContentSize, int maximumSingleResourceContentSize)
580{
581    m_resourcesData->setResourcesDataSizeLimits(maximumResourcesContentSize, maximumSingleResourceContentSize);
582}
583
584void InspectorResourceAgent::enable(ErrorString*)
585{
586    enable();
587}
588
589void InspectorResourceAgent::enable()
590{
591    if (!m_frontend)
592        return;
593    m_state->setBoolean(ResourceAgentState::resourceAgentEnabled, true);
594    m_instrumentingAgents->setInspectorResourceAgent(this);
595}
596
597void InspectorResourceAgent::disable(ErrorString*)
598{
599    m_state->setBoolean(ResourceAgentState::resourceAgentEnabled, false);
600    m_state->setString(ResourceAgentState::userAgentOverride, "");
601    m_instrumentingAgents->setInspectorResourceAgent(0);
602    m_resourcesData->clear();
603}
604
605void InspectorResourceAgent::setUserAgentOverride(ErrorString*, const String& userAgent)
606{
607    m_state->setString(ResourceAgentState::userAgentOverride, userAgent);
608    m_overlay->setOverride(InspectorOverlay::UserAgentOverride, !userAgent.isEmpty());
609}
610
611void InspectorResourceAgent::setExtraHTTPHeaders(ErrorString*, const RefPtr<JSONObject>& headers)
612{
613    m_state->setObject(ResourceAgentState::extraRequestHeaders, headers);
614}
615
616void InspectorResourceAgent::getResponseBody(ErrorString* errorString, const String& requestId, String* content, bool* base64Encoded)
617{
618    NetworkResourcesData::ResourceData const* resourceData = m_resourcesData->data(requestId);
619    if (!resourceData) {
620        *errorString = "No resource with given identifier found";
621        return;
622    }
623
624    if (resourceData->hasContent()) {
625        *base64Encoded = resourceData->base64Encoded();
626        *content = resourceData->content();
627        return;
628    }
629
630    if (resourceData->isContentEvicted()) {
631        *errorString = "Request content was evicted from inspector cache";
632        return;
633    }
634
635    if (resourceData->buffer() && !resourceData->textEncodingName().isNull()) {
636        *base64Encoded = false;
637        if (InspectorPageAgent::sharedBufferContent(resourceData->buffer(), resourceData->textEncodingName(), *base64Encoded, content))
638            return;
639    }
640
641    if (resourceData->cachedResource()) {
642        if (InspectorPageAgent::cachedResourceContent(resourceData->cachedResource(), content, base64Encoded))
643            return;
644    }
645
646    *errorString = "No data found for resource with given identifier";
647}
648
649void InspectorResourceAgent::replayXHR(ErrorString*, const String& requestId)
650{
651    RefPtr<XMLHttpRequest> xhr = XMLHttpRequest::create(m_pageAgent->mainFrame()->document());
652    String actualRequestId = requestId;
653
654    XHRReplayData* xhrReplayData = m_resourcesData->xhrReplayData(requestId);
655    if (!xhrReplayData)
656        return;
657
658    Resource* cachedResource = memoryCache()->resourceForURL(xhrReplayData->url());
659    if (cachedResource)
660        memoryCache()->remove(cachedResource);
661
662    xhr->open(xhrReplayData->method(), xhrReplayData->url(), xhrReplayData->async(), IGNORE_EXCEPTION);
663    HTTPHeaderMap::const_iterator end = xhrReplayData->headers().end();
664    for (HTTPHeaderMap::const_iterator it = xhrReplayData->headers().begin(); it!= end; ++it)
665        xhr->setRequestHeader(it->key, it->value, IGNORE_EXCEPTION);
666    xhr->sendForInspectorXHRReplay(xhrReplayData->formData(), IGNORE_EXCEPTION);
667}
668
669void InspectorResourceAgent::canClearBrowserCache(ErrorString*, bool* result)
670{
671    *result = true;
672}
673
674void InspectorResourceAgent::clearBrowserCache(ErrorString*)
675{
676    m_client->clearBrowserCache();
677}
678
679void InspectorResourceAgent::canClearBrowserCookies(ErrorString*, bool* result)
680{
681    *result = true;
682}
683
684void InspectorResourceAgent::clearBrowserCookies(ErrorString*)
685{
686    m_client->clearBrowserCookies();
687}
688
689void InspectorResourceAgent::setCacheDisabled(ErrorString*, bool cacheDisabled)
690{
691    m_state->setBoolean(ResourceAgentState::cacheDisabled, cacheDisabled);
692    if (cacheDisabled)
693        memoryCache()->evictResources();
694}
695
696void InspectorResourceAgent::loadResourceForFrontend(ErrorString* errorString, const String& frameId, const String& url, const RefPtr<JSONObject>* requestHeaders, PassRefPtr<LoadResourceForFrontendCallback> prpCallback)
697{
698    RefPtr<LoadResourceForFrontendCallback> callback = prpCallback;
699    Frame* frame = m_pageAgent->assertFrame(errorString, frameId);
700    if (!frame)
701        return;
702
703    Document* document = frame->document();
704    if (!document) {
705        *errorString = "No Document instance for the specified frame";
706        return;
707    }
708
709    ResourceRequest request(url);
710    request.setHTTPMethod("GET");
711    request.setCachePolicy(ReloadIgnoringCacheData);
712    if (requestHeaders) {
713        for (JSONObject::iterator it = (*requestHeaders)->begin(); it != (*requestHeaders)->end(); ++it) {
714            String value;
715            bool success = it->value->asString(&value);
716            if (!success) {
717                *errorString = "Request header \"" + it->key + "\" value is not a string";
718                return;
719            }
720            request.addHTTPHeaderField(it->key, value);
721        }
722    }
723
724    ThreadableLoaderOptions options;
725    options.allowCredentials = AllowStoredCredentials;
726    options.crossOriginRequestPolicy = AllowCrossOriginRequests;
727    options.sendLoadCallbacks = SendCallbacks;
728
729    InspectorThreadableLoaderClient* inspectorThreadableLoaderClient = new InspectorThreadableLoaderClient(callback);
730    RefPtr<DocumentThreadableLoader> loader = DocumentThreadableLoader::create(document, inspectorThreadableLoaderClient, request, options);
731    if (!loader) {
732        inspectorThreadableLoaderClient->didFailLoaderCreation();
733        return;
734    }
735    loader->setDefersLoading(false);
736    if (!callback->isActive())
737        return;
738    inspectorThreadableLoaderClient->setLoader(loader.release());
739}
740
741void InspectorResourceAgent::didCommitLoad(Frame* frame, DocumentLoader* loader)
742{
743    if (loader->frame() != frame->page()->mainFrame())
744        return;
745
746    if (m_state->getBoolean(ResourceAgentState::cacheDisabled))
747        memoryCache()->evictResources();
748
749    m_resourcesData->clear(m_pageAgent->loaderId(loader));
750}
751
752InspectorResourceAgent::InspectorResourceAgent(InstrumentingAgents* instrumentingAgents, InspectorPageAgent* pageAgent, InspectorClient* client, InspectorCompositeState* state, InspectorOverlay* overlay)
753    : InspectorBaseAgent<InspectorResourceAgent>("Network", instrumentingAgents, state)
754    , m_pageAgent(pageAgent)
755    , m_client(client)
756    , m_overlay(overlay)
757    , m_frontend(0)
758    , m_resourcesData(adoptPtr(new NetworkResourcesData()))
759    , m_loadingXHRSynchronously(false)
760    , m_isRecalculatingStyle(false)
761{
762}
763
764} // namespace WebCore
765
766