| /* |
| * Copyright (C) 2011, 2012 Google Inc. All rights reserved. |
| * Copyright (C) 2013, Intel Corporation |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are |
| * met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following disclaimer |
| * in the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Google Inc. nor the names of its |
| * contributors may be used to endorse or promote products derived from |
| * this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "core/loader/DocumentThreadableLoader.h" |
| |
| #include "core/dom/Document.h" |
| #include "core/fetch/CrossOriginAccessControl.h" |
| #include "core/fetch/FetchRequest.h" |
| #include "core/fetch/FetchUtils.h" |
| #include "core/fetch/Resource.h" |
| #include "core/fetch/ResourceFetcher.h" |
| #include "core/frame/FrameConsole.h" |
| #include "core/frame/LocalFrame.h" |
| #include "core/frame/csp/ContentSecurityPolicy.h" |
| #include "core/inspector/InspectorInstrumentation.h" |
| #include "core/inspector/InspectorTraceEvents.h" |
| #include "core/loader/CrossOriginPreflightResultCache.h" |
| #include "core/loader/DocumentThreadableLoaderClient.h" |
| #include "core/loader/FrameLoader.h" |
| #include "core/loader/FrameLoaderClient.h" |
| #include "core/loader/ThreadableLoaderClient.h" |
| #include "core/page/ChromeClient.h" |
| #include "core/page/Page.h" |
| #include "platform/SharedBuffer.h" |
| #include "platform/Task.h" |
| #include "platform/network/ResourceRequest.h" |
| #include "platform/weborigin/SchemeRegistry.h" |
| #include "platform/weborigin/SecurityOrigin.h" |
| #include "public/platform/Platform.h" |
| #include "public/platform/WebURLRequest.h" |
| #include "wtf/Assertions.h" |
| |
| namespace blink { |
| |
| namespace { |
| |
| class EmptyDataHandle final : public WebDataConsumerHandle { |
| private: |
| class EmptyDataReader final : public WebDataConsumerHandle::Reader { |
| public: |
| explicit EmptyDataReader(WebDataConsumerHandle::Client* client) : m_factory(this) |
| { |
| Platform::current()->currentThread()->taskRunner()->postTask(BLINK_FROM_HERE, new Task(bind(&EmptyDataReader::notify, m_factory.createWeakPtr(), client))); |
| } |
| private: |
| Result beginRead(const void** buffer, WebDataConsumerHandle::Flags, size_t *available) override |
| { |
| *available = 0; |
| *buffer = nullptr; |
| return Done; |
| } |
| Result endRead(size_t) override |
| { |
| return WebDataConsumerHandle::UnexpectedError; |
| } |
| void notify(WebDataConsumerHandle::Client* client) |
| { |
| client->didGetReadable(); |
| } |
| WeakPtrFactory<EmptyDataReader> m_factory; |
| }; |
| |
| Reader* obtainReaderInternal(Client* client) override |
| { |
| return new EmptyDataReader(client); |
| } |
| const char* debugName() const override { return "EmptyDataHandle"; } |
| }; |
| |
| } // namespace |
| |
| // Max number of CORS redirects handled in DocumentThreadableLoader. |
| // Same number as net/url_request/url_request.cc, and |
| // same number as https://fetch.spec.whatwg.org/#concept-http-fetch, Step 4. |
| // FIXME: currently the number of redirects is counted and limited here and in |
| // net/url_request/url_request.cc separately. |
| static const int kMaxCORSRedirects = 20; |
| |
| void DocumentThreadableLoader::loadResourceSynchronously(Document& document, const ResourceRequest& request, ThreadableLoaderClient& client, const ThreadableLoaderOptions& options, const ResourceLoaderOptions& resourceLoaderOptions) |
| { |
| // The loader will be deleted as soon as this function exits. |
| RefPtr<DocumentThreadableLoader> loader = adoptRef(new DocumentThreadableLoader(document, &client, LoadSynchronously, request, options, resourceLoaderOptions)); |
| ASSERT(loader->hasOneRef()); |
| } |
| |
| PassRefPtr<DocumentThreadableLoader> DocumentThreadableLoader::create(Document& document, ThreadableLoaderClient* client, const ResourceRequest& request, const ThreadableLoaderOptions& options, const ResourceLoaderOptions& resourceLoaderOptions) |
| { |
| RefPtr<DocumentThreadableLoader> loader = adoptRef(new DocumentThreadableLoader(document, client, LoadAsynchronously, request, options, resourceLoaderOptions)); |
| if (!loader->resource()) |
| loader = nullptr; |
| return loader.release(); |
| } |
| |
| DocumentThreadableLoader::DocumentThreadableLoader(Document& document, ThreadableLoaderClient* client, BlockingBehavior blockingBehavior, const ResourceRequest& request, const ThreadableLoaderOptions& options, const ResourceLoaderOptions& resourceLoaderOptions) |
| : m_client(client) |
| , m_document(&document) |
| , m_options(options) |
| , m_resourceLoaderOptions(resourceLoaderOptions) |
| , m_forceDoNotAllowStoredCredentials(false) |
| , m_securityOrigin(m_resourceLoaderOptions.securityOrigin) |
| , m_sameOriginRequest(securityOrigin()->canRequestNoSuborigin(request.url())) |
| , m_crossOriginNonSimpleRequest(false) |
| , m_isUsingDataConsumerHandle(false) |
| , m_async(blockingBehavior == LoadAsynchronously) |
| , m_requestContext(request.requestContext()) |
| , m_timeoutTimer(this, &DocumentThreadableLoader::didTimeout) |
| , m_requestStartedSeconds(0.0) |
| , m_corsRedirectLimit(kMaxCORSRedirects) |
| , m_redirectMode(request.fetchRedirectMode()) |
| { |
| ASSERT(client); |
| // Setting an outgoing referer is only supported in the async code path. |
| ASSERT(m_async || request.httpReferrer().isEmpty()); |
| |
| if (!m_sameOriginRequest && m_options.crossOriginRequestPolicy == DenyCrossOriginRequests) { |
| ThreadableLoaderClient* client = m_client; |
| clear(); |
| client->didFail(ResourceError(errorDomainBlinkInternal, 0, request.url().string(), "Cross origin requests are not supported.")); |
| // |this| may be dead here. |
| return; |
| } |
| |
| m_requestStartedSeconds = monotonicallyIncreasingTime(); |
| |
| // Save any CORS simple headers on the request here. If this request redirects cross-origin, we cancel the old request |
| // create a new one, and copy these headers. |
| const HTTPHeaderMap& headerMap = request.httpHeaderFields(); |
| for (const auto& header : headerMap) { |
| if (FetchUtils::isSimpleHeader(header.key, header.value)) { |
| m_simpleRequestHeaders.add(header.key, header.value); |
| } else if (equalIgnoringCase(header.key, HTTPNames::Range) && m_options.crossOriginRequestPolicy == UseAccessControl && m_options.preflightPolicy == PreventPreflight) { |
| // Allow an exception for the "range" header for when CORS callers request no preflight, this ensures cross-origin |
| // redirects work correctly for crossOrigin enabled WebURLRequest::RequestContextVideo type requests. |
| m_simpleRequestHeaders.add(header.key, header.value); |
| } |
| } |
| |
| // DocumentThreadableLoader is used by all javascript initiated fetch, so |
| // we use this chance to record non-GET fetch script requests. |
| // However, this is based on the following assumptions, so please be careful |
| // when adding similar logic: |
| // - ThreadableLoader is used as backend for all javascript initiated network |
| // fetches. |
| // - Note that ThreadableLoader is also used for non-network fetch such as |
| // FileReaderLoader. However it emulates GET method so signal is not |
| // recorded here. |
| // - ThreadableLoader w/ non-GET request is only created from javascript |
| // initiated fetch. |
| // - Some non-script initiated fetches such as WorkerScriptLoader also use |
| // ThreadableLoader, but they are guaranteed to use GET method. |
| if (request.httpMethod() != HTTPNames::GET) { |
| if (Page* page = document.page()) |
| page->chromeClient().didObserveNonGetFetchFromScript(); |
| } |
| |
| // If the fetch request will be handled by the ServiceWorker, the |
| // FetchRequestMode of the request must be FetchRequestModeCORS or |
| // FetchRequestModeCORSWithForcedPreflight. Otherwise the ServiceWorker can |
| // return a opaque response which is from the other origin site and the |
| // script in the page can read the content. |
| // |
| // We assume that ServiceWorker is skipped for sync requests and unsupported |
| // protocol requests by content/ code. |
| if (m_async && !request.skipServiceWorker() && SchemeRegistry::shouldTreatURLSchemeAsAllowingServiceWorkers(request.url().protocol()) && document.fetcher()->isControlledByServiceWorker()) { |
| ResourceRequest newRequest(request); |
| // FetchRequestMode should be set by the caller. But the expected value |
| // of FetchRequestMode is not speced yet except for XHR. So we set here. |
| // FIXME: When we support fetch API in document, this value should not |
| // be overridden here. |
| if (options.preflightPolicy == ForcePreflight) |
| newRequest.setFetchRequestMode(WebURLRequest::FetchRequestModeCORSWithForcedPreflight); |
| else |
| newRequest.setFetchRequestMode(WebURLRequest::FetchRequestModeCORS); |
| |
| m_fallbackRequestForServiceWorker = ResourceRequest(request); |
| m_fallbackRequestForServiceWorker.setSkipServiceWorker(true); |
| |
| loadRequest(newRequest, m_resourceLoaderOptions); |
| return; |
| } |
| |
| dispatchInitialRequest(request); |
| // |this| may be dead here in async mode. |
| } |
| |
| void DocumentThreadableLoader::dispatchInitialRequest(const ResourceRequest& request) |
| { |
| if (m_sameOriginRequest || m_options.crossOriginRequestPolicy == AllowCrossOriginRequests) { |
| loadRequest(request, m_resourceLoaderOptions); |
| return; |
| } |
| |
| ASSERT(m_options.crossOriginRequestPolicy == UseAccessControl); |
| |
| makeCrossOriginAccessRequest(request); |
| // |this| may be dead here in async mode. |
| } |
| |
| void DocumentThreadableLoader::makeCrossOriginAccessRequest(const ResourceRequest& request) |
| { |
| ASSERT(m_options.crossOriginRequestPolicy == UseAccessControl); |
| ASSERT(m_client); |
| ASSERT(!resource()); |
| |
| // Cross-origin requests are only allowed certain registered schemes. |
| // We would catch this when checking response headers later, but there |
| // is no reason to send a request, preflighted or not, that's guaranteed |
| // to be denied. |
| if (!SchemeRegistry::shouldTreatURLSchemeAsCORSEnabled(request.url().protocol())) { |
| ThreadableLoaderClient* client = m_client; |
| clear(); |
| client->didFailAccessControlCheck(ResourceError(errorDomainBlinkInternal, 0, request.url().string(), "Cross origin requests are only supported for protocol schemes: " + SchemeRegistry::listOfCORSEnabledURLSchemes() + ".")); |
| // |this| may be dead here in async mode. |
| return; |
| } |
| |
| // We use isSimpleOrForbiddenRequest() here since |request| may have been |
| // modified in the process of loading (not from the user's input). For |
| // example, referrer. We need to accept them. For security, we must reject |
| // forbidden headers/methods at the point we accept user's input. Not here. |
| if ((m_options.preflightPolicy == ConsiderPreflight && FetchUtils::isSimpleOrForbiddenRequest(request.httpMethod(), request.httpHeaderFields())) || m_options.preflightPolicy == PreventPreflight) { |
| ResourceRequest crossOriginRequest(request); |
| ResourceLoaderOptions crossOriginOptions(m_resourceLoaderOptions); |
| updateRequestForAccessControl(crossOriginRequest, securityOrigin(), effectiveAllowCredentials()); |
| // We update the credentials mode according to effectiveAllowCredentials() here for backward compatibility. But this is not correct. |
| // FIXME: We should set it in the caller of DocumentThreadableLoader. |
| crossOriginRequest.setFetchCredentialsMode(effectiveAllowCredentials() == AllowStoredCredentials ? WebURLRequest::FetchCredentialsModeInclude : WebURLRequest::FetchCredentialsModeOmit); |
| loadRequest(crossOriginRequest, crossOriginOptions); |
| } else { |
| m_crossOriginNonSimpleRequest = true; |
| |
| ResourceRequest crossOriginRequest(request); |
| ResourceLoaderOptions crossOriginOptions(m_resourceLoaderOptions); |
| // Do not set the Origin header for preflight requests. |
| updateRequestForAccessControl(crossOriginRequest, 0, effectiveAllowCredentials()); |
| // We update the credentials mode according to effectiveAllowCredentials() here for backward compatibility. But this is not correct. |
| // FIXME: We should set it in the caller of DocumentThreadableLoader. |
| crossOriginRequest.setFetchCredentialsMode(effectiveAllowCredentials() == AllowStoredCredentials ? WebURLRequest::FetchCredentialsModeInclude : WebURLRequest::FetchCredentialsModeOmit); |
| m_actualRequest = crossOriginRequest; |
| m_actualOptions = crossOriginOptions; |
| |
| bool shouldForcePreflight = InspectorInstrumentation::shouldForceCORSPreflight(m_document); |
| bool canSkipPreflight = CrossOriginPreflightResultCache::shared().canSkipPreflight(securityOrigin()->toString(), m_actualRequest.url(), effectiveAllowCredentials(), m_actualRequest.httpMethod(), m_actualRequest.httpHeaderFields()); |
| if (canSkipPreflight && !shouldForcePreflight) { |
| loadActualRequest(); |
| } else { |
| ResourceRequest preflightRequest = createAccessControlPreflightRequest(m_actualRequest, securityOrigin()); |
| // Create a ResourceLoaderOptions for preflight. |
| ResourceLoaderOptions preflightOptions = m_actualOptions; |
| preflightOptions.allowCredentials = DoNotAllowStoredCredentials; |
| loadRequest(preflightRequest, preflightOptions); |
| } |
| } |
| } |
| |
| DocumentThreadableLoader::~DocumentThreadableLoader() |
| { |
| // TODO(oilpan): Remove this once DocumentThreadableLoader is once again a ResourceOwner. |
| clearResource(); |
| } |
| |
| void DocumentThreadableLoader::overrideTimeout(unsigned long timeoutMilliseconds) |
| { |
| ASSERT(m_async); |
| |
| // |m_requestStartedSeconds| == 0.0 indicates loading is already finished |
| // and |m_timeoutTimer| is already stopped, and thus we do nothing for such |
| // cases. See https://crbug.com/551663 for details. |
| if (m_requestStartedSeconds <= 0.0) |
| return; |
| |
| m_timeoutTimer.stop(); |
| // At the time of this method's implementation, it is only ever called by |
| // XMLHttpRequest, when the timeout attribute is set after sending the |
| // request. |
| // |
| // The XHR request says to resolve the time relative to when the request |
| // was initially sent, however other uses of this method may need to |
| // behave differently, in which case this should be re-arranged somehow. |
| if (timeoutMilliseconds) { |
| double elapsedTime = monotonicallyIncreasingTime() - m_requestStartedSeconds; |
| double nextFire = timeoutMilliseconds / 1000.0; |
| double resolvedTime = std::max(nextFire - elapsedTime, 0.0); |
| m_timeoutTimer.startOneShot(resolvedTime, BLINK_FROM_HERE); |
| } |
| } |
| |
| void DocumentThreadableLoader::cancel() |
| { |
| cancelWithError(ResourceError()); |
| // |this| may be dead here. |
| } |
| |
| void DocumentThreadableLoader::cancelWithError(const ResourceError& error) |
| { |
| // Cancel can re-enter and m_resource might be null here as a result. |
| if (!m_client || !resource()) { |
| clear(); |
| return; |
| } |
| |
| ResourceError errorForCallback = error; |
| if (errorForCallback.isNull()) { |
| // FIXME: This error is sent to the client in didFail(), so it should not be an internal one. Use FrameLoaderClient::cancelledError() instead. |
| errorForCallback = ResourceError(errorDomainBlinkInternal, 0, resource()->url().string(), "Load cancelled"); |
| errorForCallback.setIsCancellation(true); |
| } |
| |
| ThreadableLoaderClient* client = m_client; |
| clear(); |
| client->didFail(errorForCallback); |
| // |this| may be dead here in async mode. |
| } |
| |
| void DocumentThreadableLoader::setDefersLoading(bool value) |
| { |
| if (resource()) |
| resource()->setDefersLoading(value); |
| } |
| |
| void DocumentThreadableLoader::clear() |
| { |
| m_client = 0; |
| |
| if (!m_async) |
| return; |
| |
| m_timeoutTimer.stop(); |
| m_requestStartedSeconds = 0.0; |
| clearResource(); |
| } |
| |
| // In this method, we can clear |request| to tell content::WebURLLoaderImpl of |
| // Chromium not to follow the redirect. This works only when this method is |
| // called by RawResource::willSendRequest(). If called by |
| // RawResource::didAddClient(), clearing |request| won't be propagated |
| // to content::WebURLLoaderImpl. So, this loader must also get detached from |
| // the resource by calling clearResource(). |
| void DocumentThreadableLoader::redirectReceived(Resource* resource, ResourceRequest& request, const ResourceResponse& redirectResponse) |
| { |
| ASSERT(m_client); |
| ASSERT_UNUSED(resource, resource == this->resource()); |
| ASSERT(m_async); |
| |
| if (!m_actualRequest.isNull()) { |
| reportResponseReceived(resource->identifier(), redirectResponse); |
| |
| handlePreflightFailure(redirectResponse.url().string(), "Response for preflight is invalid (redirect)"); |
| // |this| may be dead here. |
| |
| request = ResourceRequest(); |
| |
| return; |
| } |
| |
| if (m_redirectMode == WebURLRequest::FetchRedirectModeManual) { |
| // Keep |this| alive even if the client release a reference in |
| // responseReceived(). |
| RefPtr<DocumentThreadableLoader> protect(this); |
| |
| // We use |m_redirectMode| to check the original redirect mode. |
| // |request| is a new request for redirect. So we don't set the redirect |
| // mode of it in WebURLLoaderImpl::Context::OnReceivedRedirect(). |
| ASSERT(request.useStreamOnResponse()); |
| // There is no need to read the body of redirect response because there |
| // is no way to read the body of opaque-redirect filtered response's |
| // internal response. |
| // TODO(horo): If we support any API which expose the internal body, we |
| // will have to read the body. And also HTTPCache changes will be needed |
| // because it doesn't store the body of redirect responses. |
| responseReceived(resource, redirectResponse, adoptPtr(new EmptyDataHandle())); |
| |
| if (m_client) { |
| ASSERT(m_actualRequest.isNull()); |
| notifyFinished(resource); |
| } |
| |
| request = ResourceRequest(); |
| |
| return; |
| } |
| |
| if (m_redirectMode == WebURLRequest::FetchRedirectModeError || !isAllowedByContentSecurityPolicy(request.url(), ContentSecurityPolicy::DidRedirect)) { |
| ThreadableLoaderClient* client = m_client; |
| clear(); |
| client->didFailRedirectCheck(); |
| // |this| may be dead here. |
| |
| request = ResourceRequest(); |
| |
| return; |
| } |
| |
| // Allow same origin requests to continue after allowing clients to audit the redirect. |
| if (isAllowedRedirect(request.url())) { |
| if (m_client->isDocumentThreadableLoaderClient()) |
| static_cast<DocumentThreadableLoaderClient*>(m_client)->willFollowRedirect(request, redirectResponse); |
| return; |
| } |
| |
| if (m_corsRedirectLimit <= 0) { |
| ThreadableLoaderClient* client = m_client; |
| clear(); |
| client->didFailRedirectCheck(); |
| // |this| may be dead here. |
| } else if (m_options.crossOriginRequestPolicy == UseAccessControl) { |
| --m_corsRedirectLimit; |
| |
| InspectorInstrumentation::didReceiveCORSRedirectResponse(document().frame(), resource->identifier(), document().frame()->loader().documentLoader(), redirectResponse, 0); |
| |
| bool allowRedirect = false; |
| String accessControlErrorDescription; |
| |
| // Non-simple cross origin requests (both preflight and actual one) are |
| // not allowed to follow redirect. |
| if (m_crossOriginNonSimpleRequest) { |
| accessControlErrorDescription = "The request was redirected to '"+ request.url().string() + "', which is disallowed for cross-origin requests that require preflight."; |
| } else { |
| // The redirect response must pass the access control check if the |
| // original request was not same-origin. |
| allowRedirect = CrossOriginAccessControl::isLegalRedirectLocation(request.url(), accessControlErrorDescription) |
| && (m_sameOriginRequest || passesAccessControlCheck(redirectResponse, effectiveAllowCredentials(), securityOrigin(), accessControlErrorDescription, m_requestContext)); |
| } |
| |
| if (allowRedirect) { |
| // FIXME: consider combining this with CORS redirect handling performed by |
| // CrossOriginAccessControl::handleRedirect(). |
| clearResource(); |
| |
| RefPtr<SecurityOrigin> originalOrigin = SecurityOrigin::create(redirectResponse.url()); |
| RefPtr<SecurityOrigin> requestOrigin = SecurityOrigin::create(request.url()); |
| // If the original request wasn't same-origin, then if the request URL origin is not same origin with the original URL origin, |
| // set the source origin to a globally unique identifier. (If the original request was same-origin, the origin of the new request |
| // should be the original URL origin.) |
| if (!m_sameOriginRequest && !originalOrigin->isSameSchemeHostPort(requestOrigin.get())) |
| m_securityOrigin = SecurityOrigin::createUnique(); |
| // Force any subsequent requests to use these checks. |
| m_sameOriginRequest = false; |
| |
| // Since the request is no longer same-origin, if the user didn't request credentials in |
| // the first place, update our state so we neither request them nor expect they must be allowed. |
| if (m_resourceLoaderOptions.credentialsRequested == ClientDidNotRequestCredentials) |
| m_forceDoNotAllowStoredCredentials = true; |
| |
| // Remove any headers that may have been added by the network layer that cause access control to fail. |
| request.clearHTTPReferrer(); |
| request.clearHTTPOrigin(); |
| request.clearHTTPUserAgent(); |
| // Add any CORS simple request headers which we previously saved from the original request. |
| for (const auto& header : m_simpleRequestHeaders) |
| request.setHTTPHeaderField(header.key, header.value); |
| makeCrossOriginAccessRequest(request); |
| // |this| may be dead here. |
| return; |
| } |
| |
| ThreadableLoaderClient* client = m_client; |
| clear(); |
| client->didFailAccessControlCheck(ResourceError(errorDomainBlinkInternal, 0, redirectResponse.url().string(), accessControlErrorDescription)); |
| // |this| may be dead here. |
| } else { |
| ThreadableLoaderClient* client = m_client; |
| clear(); |
| client->didFailRedirectCheck(); |
| // |this| may be dead here. |
| } |
| |
| request = ResourceRequest(); |
| } |
| |
| void DocumentThreadableLoader::dataSent(Resource* resource, unsigned long long bytesSent, unsigned long long totalBytesToBeSent) |
| { |
| ASSERT(m_client); |
| ASSERT_UNUSED(resource, resource == this->resource()); |
| ASSERT(m_async); |
| |
| m_client->didSendData(bytesSent, totalBytesToBeSent); |
| // |this| may be dead here. |
| } |
| |
| void DocumentThreadableLoader::dataDownloaded(Resource* resource, int dataLength) |
| { |
| ASSERT(m_client); |
| ASSERT_UNUSED(resource, resource == this->resource()); |
| ASSERT(m_actualRequest.isNull()); |
| ASSERT(m_async); |
| |
| m_client->didDownloadData(dataLength); |
| // |this| may be dead here. |
| } |
| |
| void DocumentThreadableLoader::didReceiveResourceTiming(Resource* resource, const ResourceTimingInfo& info) |
| { |
| ASSERT(m_client); |
| ASSERT_UNUSED(resource, resource == this->resource()); |
| ASSERT(m_async); |
| |
| m_client->didReceiveResourceTiming(info); |
| // |this| may be dead here. |
| } |
| |
| void DocumentThreadableLoader::responseReceived(Resource* resource, const ResourceResponse& response, PassOwnPtr<WebDataConsumerHandle> handle) |
| { |
| ASSERT_UNUSED(resource, resource == this->resource()); |
| ASSERT(m_async); |
| |
| if (handle) |
| m_isUsingDataConsumerHandle = true; |
| |
| handleResponse(resource->identifier(), response, handle); |
| // |this| may be dead here. |
| } |
| |
| void DocumentThreadableLoader::handlePreflightResponse(const ResourceResponse& response) |
| { |
| String accessControlErrorDescription; |
| |
| if (!passesAccessControlCheck(response, effectiveAllowCredentials(), securityOrigin(), accessControlErrorDescription, m_requestContext)) { |
| handlePreflightFailure(response.url().string(), "Response to preflight request doesn't pass access control check: " + accessControlErrorDescription); |
| // |this| may be dead here in async mode. |
| return; |
| } |
| |
| if (!passesPreflightStatusCheck(response, accessControlErrorDescription)) { |
| handlePreflightFailure(response.url().string(), accessControlErrorDescription); |
| // |this| may be dead here in async mode. |
| return; |
| } |
| |
| OwnPtr<CrossOriginPreflightResultCacheItem> preflightResult = adoptPtr(new CrossOriginPreflightResultCacheItem(effectiveAllowCredentials())); |
| if (!preflightResult->parse(response, accessControlErrorDescription) |
| || !preflightResult->allowsCrossOriginMethod(m_actualRequest.httpMethod(), accessControlErrorDescription) |
| || !preflightResult->allowsCrossOriginHeaders(m_actualRequest.httpHeaderFields(), accessControlErrorDescription)) { |
| handlePreflightFailure(response.url().string(), accessControlErrorDescription); |
| // |this| may be dead here in async mode. |
| return; |
| } |
| |
| CrossOriginPreflightResultCache::shared().appendEntry(securityOrigin()->toString(), m_actualRequest.url(), preflightResult.release()); |
| } |
| |
| void DocumentThreadableLoader::reportResponseReceived(unsigned long identifier, const ResourceResponse& response) |
| { |
| LocalFrame* frame = document().frame(); |
| // We are seeing crashes caused by nullptr (crbug.com/578849). But the frame |
| // must be set here. TODO(horo): Find the root cause of the unset frame. |
| ASSERT(frame); |
| if (!frame) |
| return; |
| DocumentLoader* loader = frame->loader().documentLoader(); |
| TRACE_EVENT_INSTANT1("devtools.timeline", "ResourceReceiveResponse", TRACE_EVENT_SCOPE_THREAD, "data", InspectorReceiveResponseEvent::data(identifier, frame, response)); |
| InspectorInstrumentation::didReceiveResourceResponse(frame, identifier, loader, response, resource() ? resource()->loader() : 0); |
| frame->console().reportResourceResponseReceived(loader, identifier, response); |
| } |
| |
| void DocumentThreadableLoader::handleResponse(unsigned long identifier, const ResourceResponse& response, PassOwnPtr<WebDataConsumerHandle> handle) |
| { |
| ASSERT(m_client); |
| |
| if (!m_actualRequest.isNull()) { |
| reportResponseReceived(identifier, response); |
| handlePreflightResponse(response); |
| // |this| may be dead here in async mode. |
| return; |
| } |
| |
| if (response.wasFetchedViaServiceWorker()) { |
| // It's still possible to reach here with null m_fallbackRequestForServiceWorker |
| // if the request was for main resource loading (i.e. for SharedWorker), for which |
| // we create DocumentLoader before the controller ServiceWorker is set. |
| ASSERT(!m_fallbackRequestForServiceWorker.isNull() || m_requestContext == WebURLRequest::RequestContextSharedWorker); |
| if (response.wasFallbackRequiredByServiceWorker()) { |
| // At this point we must have m_fallbackRequestForServiceWorker. |
| // (For SharedWorker the request won't be CORS or CORS-with-preflight, |
| // therefore fallback-to-network is handled in the browser process |
| // when the ServiceWorker does not call respondWith().) |
| ASSERT(!m_fallbackRequestForServiceWorker.isNull()); |
| reportResponseReceived(identifier, response); |
| loadFallbackRequestForServiceWorker(); |
| // |this| may be dead here in async mode. |
| return; |
| } |
| m_fallbackRequestForServiceWorker = ResourceRequest(); |
| m_client->didReceiveResponse(identifier, response, handle); |
| return; |
| } |
| |
| // Even if the request met the conditions to get handled by a Service Worker |
| // in the constructor of this class (and therefore |
| // |m_fallbackRequestForServiceWorker| is set), the Service Worker may skip |
| // processing the request. Only if the request is same origin, the skipped |
| // response may come here (wasFetchedViaServiceWorker() returns false) since |
| // such a request doesn't have to go through the CORS algorithm by calling |
| // loadFallbackRequestForServiceWorker(). |
| // FIXME: We should use |m_sameOriginRequest| when we will support |
| // Suborigins (crbug.com/336894) for Service Worker. |
| ASSERT(m_fallbackRequestForServiceWorker.isNull() || securityOrigin()->canRequest(m_fallbackRequestForServiceWorker.url())); |
| m_fallbackRequestForServiceWorker = ResourceRequest(); |
| |
| if (!m_sameOriginRequest && m_options.crossOriginRequestPolicy == UseAccessControl) { |
| String accessControlErrorDescription; |
| if (!passesAccessControlCheck(response, effectiveAllowCredentials(), securityOrigin(), accessControlErrorDescription, m_requestContext)) { |
| reportResponseReceived(identifier, response); |
| |
| ThreadableLoaderClient* client = m_client; |
| clear(); |
| client->didFailAccessControlCheck(ResourceError(errorDomainBlinkInternal, 0, response.url().string(), accessControlErrorDescription)); |
| // |this| may be dead here. |
| return; |
| } |
| } |
| |
| m_client->didReceiveResponse(identifier, response, handle); |
| } |
| |
| void DocumentThreadableLoader::setSerializedCachedMetadata(Resource*, const char* data, size_t size) |
| { |
| if (!m_actualRequest.isNull()) |
| return; |
| m_client->didReceiveCachedMetadata(data, size); |
| // |this| may be dead here. |
| } |
| |
| void DocumentThreadableLoader::dataReceived(Resource* resource, const char* data, size_t dataLength) |
| { |
| ASSERT_UNUSED(resource, resource == this->resource()); |
| ASSERT(m_async); |
| |
| if (m_isUsingDataConsumerHandle) |
| return; |
| |
| // TODO(junov): Fix the ThreadableLoader ecosystem to use size_t. |
| // Until then, we use safeCast to trap potential overflows. |
| handleReceivedData(data, safeCast<unsigned>(dataLength)); |
| // |this| may be dead here. |
| } |
| |
| void DocumentThreadableLoader::handleReceivedData(const char* data, size_t dataLength) |
| { |
| ASSERT(m_client); |
| |
| // Preflight data should be invisible to clients. |
| if (!m_actualRequest.isNull()) |
| return; |
| |
| ASSERT(m_fallbackRequestForServiceWorker.isNull()); |
| |
| m_client->didReceiveData(data, dataLength); |
| // |this| may be dead here in async mode. |
| } |
| |
| void DocumentThreadableLoader::notifyFinished(Resource* resource) |
| { |
| ASSERT(m_client); |
| ASSERT(resource == this->resource()); |
| ASSERT(m_async); |
| |
| if (resource->errorOccurred()) { |
| handleError(resource->resourceError()); |
| // |this| may be dead here. |
| } else { |
| handleSuccessfulFinish(resource->identifier(), resource->loadFinishTime()); |
| // |this| may be dead here. |
| } |
| } |
| |
| void DocumentThreadableLoader::handleSuccessfulFinish(unsigned long identifier, double finishTime) |
| { |
| ASSERT(m_fallbackRequestForServiceWorker.isNull()); |
| |
| if (!m_actualRequest.isNull()) { |
| // FIXME: Timeout should be applied to whole fetch, not for each of |
| // preflight and actual request. |
| m_timeoutTimer.stop(); |
| ASSERT(!m_sameOriginRequest); |
| ASSERT(m_options.crossOriginRequestPolicy == UseAccessControl); |
| loadActualRequest(); |
| return; |
| } |
| |
| ThreadableLoaderClient* client = m_client; |
| m_client = 0; |
| // Don't clear the resource as the client may need to access the downloaded |
| // file which will be released when the resource is destoryed. |
| if (m_async) { |
| m_timeoutTimer.stop(); |
| m_requestStartedSeconds = 0.0; |
| } |
| client->didFinishLoading(identifier, finishTime); |
| // |this| may be dead here in async mode. |
| } |
| |
| void DocumentThreadableLoader::didTimeout(Timer<DocumentThreadableLoader>* timer) |
| { |
| ASSERT_UNUSED(timer, timer == &m_timeoutTimer); |
| |
| // Using values from net/base/net_error_list.h ERR_TIMED_OUT, |
| // Same as existing FIXME above - this error should be coming from FrameLoaderClient to be identifiable. |
| static const int timeoutError = -7; |
| ResourceError error("net", timeoutError, resource()->url(), String()); |
| error.setIsTimeout(true); |
| cancelWithError(error); |
| // |this| may be dead here. |
| } |
| |
| void DocumentThreadableLoader::loadFallbackRequestForServiceWorker() |
| { |
| clearResource(); |
| ResourceRequest fallbackRequest(m_fallbackRequestForServiceWorker); |
| m_fallbackRequestForServiceWorker = ResourceRequest(); |
| dispatchInitialRequest(fallbackRequest); |
| // |this| may be dead here in async mode. |
| } |
| |
| void DocumentThreadableLoader::loadActualRequest() |
| { |
| ResourceRequest actualRequest = m_actualRequest; |
| ResourceLoaderOptions actualOptions = m_actualOptions; |
| m_actualRequest = ResourceRequest(); |
| m_actualOptions = ResourceLoaderOptions(); |
| |
| actualRequest.setHTTPOrigin(securityOrigin()); |
| |
| clearResource(); |
| |
| loadRequest(actualRequest, actualOptions); |
| } |
| |
| void DocumentThreadableLoader::handlePreflightFailure(const String& url, const String& errorDescription) |
| { |
| ResourceError error(errorDomainBlinkInternal, 0, url, errorDescription); |
| |
| // Prevent handleSuccessfulFinish() from bypassing access check. |
| m_actualRequest = ResourceRequest(); |
| |
| ThreadableLoaderClient* client = m_client; |
| clear(); |
| client->didFailAccessControlCheck(error); |
| // |this| may be dead here in async mode. |
| } |
| |
| void DocumentThreadableLoader::handleError(const ResourceError& error) |
| { |
| // Copy the ResourceError instance to make it sure that the passed |
| // ResourceError is alive during didFail() even when the Resource is |
| // destructed during didFail(). |
| ResourceError copiedError = error; |
| |
| ThreadableLoaderClient* client = m_client; |
| clear(); |
| client->didFail(copiedError); |
| // |this| may be dead here. |
| } |
| |
| void DocumentThreadableLoader::loadRequest(const ResourceRequest& request, ResourceLoaderOptions resourceLoaderOptions) |
| { |
| // Any credential should have been removed from the cross-site requests. |
| const KURL& requestURL = request.url(); |
| ASSERT(m_sameOriginRequest || requestURL.user().isEmpty()); |
| ASSERT(m_sameOriginRequest || requestURL.pass().isEmpty()); |
| |
| // Update resourceLoaderOptions with enforced values. |
| if (m_forceDoNotAllowStoredCredentials) |
| resourceLoaderOptions.allowCredentials = DoNotAllowStoredCredentials; |
| resourceLoaderOptions.securityOrigin = m_securityOrigin; |
| if (m_async) { |
| if (!m_actualRequest.isNull()) |
| resourceLoaderOptions.dataBufferingPolicy = BufferData; |
| |
| if (m_options.timeoutMilliseconds > 0) |
| m_timeoutTimer.startOneShot(m_options.timeoutMilliseconds / 1000.0, BLINK_FROM_HERE); |
| |
| FetchRequest newRequest(request, m_options.initiator, resourceLoaderOptions); |
| if (m_options.crossOriginRequestPolicy == AllowCrossOriginRequests) |
| newRequest.setOriginRestriction(FetchRequest::NoOriginRestriction); |
| ASSERT(!resource()); |
| if (request.requestContext() == WebURLRequest::RequestContextVideo || request.requestContext() == WebURLRequest::RequestContextAudio) |
| setResource(RawResource::fetchMedia(newRequest, document().fetcher())); |
| else if (request.requestContext() == WebURLRequest::RequestContextManifest) |
| setResource(RawResource::fetchManifest(newRequest, document().fetcher())); |
| else |
| setResource(RawResource::fetch(newRequest, document().fetcher())); |
| if (resource() && resource()->loader()) { |
| unsigned long identifier = resource()->identifier(); |
| InspectorInstrumentation::documentThreadableLoaderStartedLoadingForClient(m_document, identifier, m_client); |
| } |
| return; |
| } |
| |
| FetchRequest fetchRequest(request, m_options.initiator, resourceLoaderOptions); |
| if (m_options.crossOriginRequestPolicy == AllowCrossOriginRequests) |
| fetchRequest.setOriginRestriction(FetchRequest::NoOriginRestriction); |
| RefPtrWillBeRawPtr<Resource> resource = RawResource::fetchSynchronously(fetchRequest, document().fetcher()); |
| ResourceResponse response = resource ? resource->response() : ResourceResponse(); |
| unsigned long identifier = resource ? resource->identifier() : std::numeric_limits<unsigned long>::max(); |
| ResourceError error = resource ? resource->resourceError() : ResourceError(); |
| |
| InspectorInstrumentation::documentThreadableLoaderStartedLoadingForClient(m_document, identifier, m_client); |
| |
| if (!resource) { |
| m_client->didFail(error); |
| return; |
| } |
| |
| // No exception for file:/// resources, see <rdar://problem/4962298>. |
| // Also, if we have an HTTP response, then it wasn't a network error in fact. |
| if (!error.isNull() && !requestURL.isLocalFile() && response.httpStatusCode() <= 0) { |
| m_client->didFail(error); |
| return; |
| } |
| |
| // FIXME: A synchronous request does not tell us whether a redirect happened or not, so we guess by comparing the |
| // request and response URLs. This isn't a perfect test though, since a server can serve a redirect to the same URL that was |
| // requested. Also comparing the request and response URLs as strings will fail if the requestURL still has its credentials. |
| if (requestURL != response.url() && (!isAllowedByContentSecurityPolicy(response.url(), ContentSecurityPolicy::DidRedirect) || !isAllowedRedirect(response.url()))) { |
| m_client->didFailRedirectCheck(); |
| return; |
| } |
| |
| handleResponse(identifier, response, nullptr); |
| |
| // handleResponse() may detect an error. In such a case (check |m_client| |
| // as it gets reset by clear() call), skip the rest. |
| // |
| // |this| is alive here since loadResourceSynchronously() keeps it alive |
| // until the end of the function. |
| if (!m_client) |
| return; |
| |
| SharedBuffer* data = resource->resourceBuffer(); |
| if (data) |
| handleReceivedData(data->data(), data->size()); |
| |
| // The client may cancel this loader in handleReceivedData(). In such a |
| // case, skip the rest. |
| if (!m_client) |
| return; |
| |
| handleSuccessfulFinish(identifier, 0.0); |
| } |
| |
| bool DocumentThreadableLoader::isAllowedRedirect(const KURL& url) const |
| { |
| if (m_options.crossOriginRequestPolicy == AllowCrossOriginRequests) |
| return true; |
| |
| return m_sameOriginRequest && securityOrigin()->canRequest(url); |
| } |
| |
| bool DocumentThreadableLoader::isAllowedByContentSecurityPolicy(const KURL& url, ContentSecurityPolicy::RedirectStatus redirectStatus) const |
| { |
| if (m_options.contentSecurityPolicyEnforcement != EnforceConnectSrcDirective) |
| return true; |
| return document().contentSecurityPolicy()->allowConnectToSource(url, redirectStatus); |
| } |
| |
| StoredCredentials DocumentThreadableLoader::effectiveAllowCredentials() const |
| { |
| if (m_forceDoNotAllowStoredCredentials) |
| return DoNotAllowStoredCredentials; |
| return m_resourceLoaderOptions.allowCredentials; |
| } |
| |
| SecurityOrigin* DocumentThreadableLoader::securityOrigin() const |
| { |
| return m_securityOrigin ? m_securityOrigin.get() : document().securityOrigin(); |
| } |
| |
| Document& DocumentThreadableLoader::document() const |
| { |
| ASSERT(m_document); |
| return *m_document; |
| } |
| |
| } // namespace blink |
