| /* |
| * Copyright (C) 2011, 2012 Google Inc. All rights reserved. |
| * |
| * 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 "config.h" |
| #include "DocumentThreadableLoader.h" |
| |
| #include "CachedRawResource.h" |
| #include "CachedResourceLoader.h" |
| #include "CachedResourceRequest.h" |
| #include "CachedResourceRequestInitiators.h" |
| #include "CrossOriginAccessControl.h" |
| #include "CrossOriginPreflightChecker.h" |
| #include "CrossOriginPreflightResultCache.h" |
| #include "DOMWindow.h" |
| #include "Document.h" |
| #include "Frame.h" |
| #include "FrameLoader.h" |
| #include "InspectorInstrumentation.h" |
| #include "LegacySchemeRegistry.h" |
| #include "LoadTiming.h" |
| #include "LoaderStrategy.h" |
| #include "Performance.h" |
| #include "PlatformStrategies.h" |
| #include "ProgressTracker.h" |
| #include "ResourceError.h" |
| #include "ResourceRequest.h" |
| #include "ResourceTiming.h" |
| #include "RuntimeApplicationChecks.h" |
| #include "RuntimeEnabledFeatures.h" |
| #include "SecurityOrigin.h" |
| #include "Settings.h" |
| #include "SharedBuffer.h" |
| #include "SubresourceIntegrity.h" |
| #include "SubresourceLoader.h" |
| #include "ThreadableLoaderClient.h" |
| #include <wtf/Assertions.h> |
| #include <wtf/Ref.h> |
| |
| #if PLATFORM(IOS_FAMILY) |
| #include <wtf/cocoa/RuntimeApplicationChecksCocoa.h> |
| #endif |
| |
| namespace WebCore { |
| |
| void DocumentThreadableLoader::loadResourceSynchronously(Document& document, ResourceRequest&& request, ThreadableLoaderClient& client, const ThreadableLoaderOptions& options, RefPtr<SecurityOrigin>&& origin, std::unique_ptr<ContentSecurityPolicy>&& contentSecurityPolicy) |
| { |
| // The loader will be deleted as soon as this function exits. |
| Ref<DocumentThreadableLoader> loader = adoptRef(*new DocumentThreadableLoader(document, client, LoadSynchronously, WTFMove(request), options, WTFMove(origin), WTFMove(contentSecurityPolicy), String(), ShouldLogError::Yes)); |
| ASSERT(loader->hasOneRef()); |
| } |
| |
| void DocumentThreadableLoader::loadResourceSynchronously(Document& document, ResourceRequest&& request, ThreadableLoaderClient& client, const ThreadableLoaderOptions& options) |
| { |
| loadResourceSynchronously(document, WTFMove(request), client, options, nullptr, nullptr); |
| } |
| |
| RefPtr<DocumentThreadableLoader> DocumentThreadableLoader::create(Document& document, ThreadableLoaderClient& client, |
| ResourceRequest&& request, const ThreadableLoaderOptions& options, RefPtr<SecurityOrigin>&& origin, |
| std::unique_ptr<ContentSecurityPolicy>&& contentSecurityPolicy, String&& referrer, ShouldLogError shouldLogError) |
| { |
| RefPtr<DocumentThreadableLoader> loader = adoptRef(new DocumentThreadableLoader(document, client, LoadAsynchronously, WTFMove(request), options, WTFMove(origin), WTFMove(contentSecurityPolicy), WTFMove(referrer), shouldLogError)); |
| if (!loader->isLoading()) |
| loader = nullptr; |
| return loader; |
| } |
| |
| RefPtr<DocumentThreadableLoader> DocumentThreadableLoader::create(Document& document, ThreadableLoaderClient& client, ResourceRequest&& request, const ThreadableLoaderOptions& options, String&& referrer) |
| { |
| return create(document, client, WTFMove(request), options, nullptr, nullptr, WTFMove(referrer), ShouldLogError::Yes); |
| } |
| |
| static inline bool shouldPerformSecurityChecks() |
| { |
| return platformStrategies()->loaderStrategy()->shouldPerformSecurityChecks(); |
| } |
| |
| bool DocumentThreadableLoader::shouldSetHTTPHeadersToKeep() const |
| { |
| if (m_options.mode == FetchOptions::Mode::Cors && shouldPerformSecurityChecks()) |
| return true; |
| |
| #if ENABLE(SERVICE_WORKER) |
| if (m_options.serviceWorkersMode == ServiceWorkersMode::All && m_async) |
| return m_options.serviceWorkerRegistrationIdentifier || m_document.activeServiceWorker(); |
| #endif |
| |
| return false; |
| } |
| |
| DocumentThreadableLoader::DocumentThreadableLoader(Document& document, ThreadableLoaderClient& client, BlockingBehavior blockingBehavior, ResourceRequest&& request, const ThreadableLoaderOptions& options, RefPtr<SecurityOrigin>&& origin, std::unique_ptr<ContentSecurityPolicy>&& contentSecurityPolicy, String&& referrer, ShouldLogError shouldLogError) |
| : m_client(&client) |
| , m_document(document) |
| , m_options(options) |
| , m_origin(WTFMove(origin)) |
| , m_referrer(WTFMove(referrer)) |
| , m_sameOriginRequest(securityOrigin().canRequest(request.url())) |
| , m_simpleRequest(true) |
| , m_async(blockingBehavior == LoadAsynchronously) |
| , m_delayCallbacksForIntegrityCheck(!m_options.integrity.isEmpty()) |
| , m_contentSecurityPolicy(WTFMove(contentSecurityPolicy)) |
| , m_shouldLogError(shouldLogError) |
| { |
| relaxAdoptionRequirement(); |
| |
| // Setting a referrer header is only supported in the async code path. |
| ASSERT(m_async || m_referrer.isEmpty()); |
| |
| if (document.settings().disallowSyncXHRDuringPageDismissalEnabled() && !m_async && (!document.page() || !document.page()->areSynchronousLoadsAllowed())) { |
| document.didRejectSyncXHRDuringPageDismissal(); |
| logErrorAndFail(ResourceError(errorDomainWebKitInternal, 0, request.url(), "Synchronous loads are not allowed at this time")); |
| return; |
| } |
| |
| // Referrer and Origin headers should be set after the preflight if any. |
| ASSERT(!request.hasHTTPReferrer() && !request.hasHTTPOrigin()); |
| |
| ASSERT_WITH_SECURITY_IMPLICATION(isAllowedByContentSecurityPolicy(request.url(), ContentSecurityPolicy::RedirectResponseReceived::No)); |
| |
| m_options.storedCredentialsPolicy = (m_options.credentials == FetchOptions::Credentials::Include || (m_options.credentials == FetchOptions::Credentials::SameOrigin && m_sameOriginRequest)) ? StoredCredentialsPolicy::Use : StoredCredentialsPolicy::DoNotUse; |
| |
| ASSERT(!request.httpHeaderFields().contains(HTTPHeaderName::Origin)); |
| |
| // Copy headers if we need to replay the request after a redirection. |
| if (m_options.mode == FetchOptions::Mode::Cors) |
| m_originalHeaders = request.httpHeaderFields(); |
| |
| if (shouldSetHTTPHeadersToKeep()) |
| m_options.httpHeadersToKeep = httpHeadersToKeepFromCleaning(request.httpHeaderFields()); |
| |
| bool shouldDisableCORS = document.isRunningUserScripts() && LegacySchemeRegistry::isUserExtensionScheme(request.url().protocol().toStringWithoutCopying()); |
| if (auto* page = document.page()) |
| shouldDisableCORS |= page->shouldDisableCorsForRequestTo(request.url()); |
| |
| if (shouldDisableCORS) { |
| m_options.mode = FetchOptions::Mode::NoCors; |
| m_options.filteringPolicy = ResponseFilteringPolicy::Disable; |
| m_responsesCanBeOpaque = false; |
| } |
| |
| m_options.cspResponseHeaders = m_options.contentSecurityPolicyEnforcement != ContentSecurityPolicyEnforcement::DoNotEnforce ? this->contentSecurityPolicy().responseHeaders() : ContentSecurityPolicyResponseHeaders { }; |
| |
| // As per step 11 of https://fetch.spec.whatwg.org/#main-fetch, data scheme (if same-origin data-URL flag is set) and about scheme are considered same-origin. |
| if (request.url().protocolIsData()) |
| m_sameOriginRequest = options.sameOriginDataURLFlag == SameOriginDataURLFlag::Set; |
| |
| if (m_sameOriginRequest || m_options.mode == FetchOptions::Mode::NoCors || m_options.mode == FetchOptions::Mode::Navigate) { |
| loadRequest(WTFMove(request), SecurityCheckPolicy::DoSecurityCheck); |
| return; |
| } |
| |
| if (m_options.mode == FetchOptions::Mode::SameOrigin) { |
| logErrorAndFail(ResourceError(errorDomainWebKitInternal, 0, request.url(), "Cross origin requests are not allowed when using same-origin fetch mode.")); |
| return; |
| } |
| |
| makeCrossOriginAccessRequest(WTFMove(request)); |
| } |
| |
| bool DocumentThreadableLoader::checkURLSchemeAsCORSEnabled(const URL& url) |
| { |
| // Cross-origin requests are only allowed for HTTP and registered schemes. We would catch this when checking response headers later, but there is no reason to send a request that's guaranteed to be denied. |
| if (!LegacySchemeRegistry::shouldTreatURLSchemeAsCORSEnabled(url.protocol().toStringWithoutCopying())) { |
| logErrorAndFail(ResourceError(errorDomainWebKitInternal, 0, url, "Cross origin requests are only supported for HTTP.", ResourceError::Type::AccessControl)); |
| return false; |
| } |
| return true; |
| } |
| |
| void DocumentThreadableLoader::makeCrossOriginAccessRequest(ResourceRequest&& request) |
| { |
| ASSERT(m_options.mode == FetchOptions::Mode::Cors); |
| |
| #if PLATFORM(IOS_FAMILY) |
| bool needsPreflightQuirk = IOSApplication::isMoviStarPlus() && applicationSDKVersion() < DYLD_IOS_VERSION_12_0 && (m_options.preflightPolicy == PreflightPolicy::Consider || m_options.preflightPolicy == PreflightPolicy::Force); |
| #else |
| bool needsPreflightQuirk = false; |
| #endif |
| |
| if ((m_options.preflightPolicy == PreflightPolicy::Consider && isSimpleCrossOriginAccessRequest(request.httpMethod(), request.httpHeaderFields())) || m_options.preflightPolicy == PreflightPolicy::Prevent || (shouldPerformSecurityChecks() && !needsPreflightQuirk)) { |
| if (checkURLSchemeAsCORSEnabled(request.url())) |
| makeSimpleCrossOriginAccessRequest(WTFMove(request)); |
| } else { |
| #if ENABLE(SERVICE_WORKER) |
| if (m_options.serviceWorkersMode == ServiceWorkersMode::All && m_async) { |
| if (m_options.serviceWorkerRegistrationIdentifier || document().activeServiceWorker()) { |
| ASSERT(!m_bypassingPreflightForServiceWorkerRequest); |
| m_bypassingPreflightForServiceWorkerRequest = WTFMove(request); |
| m_options.serviceWorkersMode = ServiceWorkersMode::Only; |
| loadRequest(ResourceRequest { m_bypassingPreflightForServiceWorkerRequest.value() }, SecurityCheckPolicy::SkipSecurityCheck); |
| return; |
| } |
| } |
| #endif |
| if (!needsPreflightQuirk && !checkURLSchemeAsCORSEnabled(request.url())) |
| return; |
| |
| m_simpleRequest = false; |
| if (CrossOriginPreflightResultCache::singleton().canSkipPreflight(securityOrigin().toString(), request.url(), m_options.storedCredentialsPolicy, request.httpMethod(), request.httpHeaderFields())) |
| preflightSuccess(WTFMove(request)); |
| else |
| makeCrossOriginAccessRequestWithPreflight(WTFMove(request)); |
| } |
| } |
| |
| void DocumentThreadableLoader::makeSimpleCrossOriginAccessRequest(ResourceRequest&& request) |
| { |
| ASSERT(m_options.preflightPolicy != PreflightPolicy::Force || shouldPerformSecurityChecks()); |
| ASSERT(m_options.preflightPolicy == PreflightPolicy::Prevent || isSimpleCrossOriginAccessRequest(request.httpMethod(), request.httpHeaderFields()) || shouldPerformSecurityChecks()); |
| |
| updateRequestForAccessControl(request, securityOrigin(), m_options.storedCredentialsPolicy); |
| loadRequest(WTFMove(request), SecurityCheckPolicy::DoSecurityCheck); |
| } |
| |
| void DocumentThreadableLoader::makeCrossOriginAccessRequestWithPreflight(ResourceRequest&& request) |
| { |
| if (m_async) { |
| m_preflightChecker.emplace(*this, WTFMove(request)); |
| m_preflightChecker->startPreflight(); |
| return; |
| } |
| CrossOriginPreflightChecker::doPreflight(*this, WTFMove(request)); |
| } |
| |
| DocumentThreadableLoader::~DocumentThreadableLoader() |
| { |
| if (m_resource) |
| m_resource->removeClient(*this); |
| } |
| |
| void DocumentThreadableLoader::cancel() |
| { |
| Ref<DocumentThreadableLoader> protectedThis(*this); |
| |
| // Cancel can re-enter and m_resource might be null here as a result. |
| if (m_client && m_resource) { |
| // FIXME: This error is sent to the client in didFail(), so it should not be an internal one. Use FrameLoaderClient::cancelledError() instead. |
| ResourceError error(errorDomainWebKitInternal, 0, m_resource->url(), "Load cancelled", ResourceError::Type::Cancellation); |
| m_client->didFail(error); |
| } |
| clearResource(); |
| m_client = nullptr; |
| } |
| |
| void DocumentThreadableLoader::setDefersLoading(bool value) |
| { |
| if (m_resource) |
| m_resource->setDefersLoading(value); |
| if (m_preflightChecker) |
| m_preflightChecker->setDefersLoading(value); |
| } |
| |
| void DocumentThreadableLoader::clearResource() |
| { |
| // Script can cancel and restart a request reentrantly within removeClient(), |
| // which could lead to calling CachedResource::removeClient() multiple times for |
| // this DocumentThreadableLoader. Save off a copy of m_resource and clear it to |
| // prevent the reentrancy. |
| if (CachedResourceHandle<CachedRawResource> resource = m_resource) { |
| m_resource = nullptr; |
| resource->removeClient(*this); |
| } |
| if (m_preflightChecker) |
| m_preflightChecker = WTF::nullopt; |
| } |
| |
| void DocumentThreadableLoader::redirectReceived(CachedResource& resource, ResourceRequest&& request, const ResourceResponse& redirectResponse, CompletionHandler<void(ResourceRequest&&)>&& completionHandler) |
| { |
| ASSERT(m_client); |
| ASSERT_UNUSED(resource, &resource == m_resource); |
| |
| Ref<DocumentThreadableLoader> protectedThis(*this); |
| --m_options.maxRedirectCount; |
| |
| // FIXME: We restrict this check to Fetch API for the moment, as this might disrupt WorkerScriptLoader. |
| // Reassess this check based on https://github.com/whatwg/fetch/issues/393 discussions. |
| // We should also disable that check in navigation mode. |
| if (!request.url().protocolIsInHTTPFamily() && m_options.initiator == cachedResourceRequestInitiators().fetch) { |
| reportRedirectionWithBadScheme(request.url()); |
| clearResource(); |
| return completionHandler(WTFMove(request)); |
| } |
| |
| if (platformStrategies()->loaderStrategy()->havePerformedSecurityChecks(redirectResponse)) { |
| completionHandler(WTFMove(request)); |
| return; |
| } |
| |
| if (!isAllowedByContentSecurityPolicy(request.url(), redirectResponse.isNull() ? ContentSecurityPolicy::RedirectResponseReceived::No : ContentSecurityPolicy::RedirectResponseReceived::Yes)) { |
| reportContentSecurityPolicyError(redirectResponse.url()); |
| clearResource(); |
| return completionHandler(WTFMove(request)); |
| } |
| |
| // Allow same origin requests to continue after allowing clients to audit the redirect. |
| if (isAllowedRedirect(request.url())) |
| return completionHandler(WTFMove(request)); |
| |
| // Force any subsequent request to use these checks. |
| m_sameOriginRequest = false; |
| |
| ASSERT(m_resource); |
| ASSERT(m_originalHeaders); |
| |
| // Use a unique for subsequent loads if needed. |
| // https://fetch.spec.whatwg.org/#concept-http-redirect-fetch (Step 10). |
| ASSERT(m_options.mode == FetchOptions::Mode::Cors); |
| if (!securityOrigin().canRequest(redirectResponse.url()) && !protocolHostAndPortAreEqual(redirectResponse.url(), request.url())) |
| m_origin = SecurityOrigin::createUnique(); |
| |
| // Except in case where preflight is needed, loading should be able to continue on its own. |
| // But we also handle credentials here if it is restricted to SameOrigin. |
| if (m_options.credentials != FetchOptions::Credentials::SameOrigin && m_simpleRequest && isSimpleCrossOriginAccessRequest(request.httpMethod(), *m_originalHeaders)) |
| return completionHandler(WTFMove(request)); |
| |
| if (m_options.credentials == FetchOptions::Credentials::SameOrigin) |
| m_options.storedCredentialsPolicy = StoredCredentialsPolicy::DoNotUse; |
| |
| clearResource(); |
| |
| m_referrer = request.httpReferrer(); |
| if (m_referrer.isNull()) |
| m_options.referrerPolicy = ReferrerPolicy::NoReferrer; |
| |
| // Let's fetch the request with the original headers (equivalent to request cloning specified by fetch algorithm). |
| // Do not copy the Authorization header if removed by the network layer. |
| if (!request.httpHeaderFields().contains(HTTPHeaderName::Authorization)) |
| m_originalHeaders->remove(HTTPHeaderName::Authorization); |
| request.setHTTPHeaderFields(*m_originalHeaders); |
| |
| #if ENABLE(SERVICE_WORKER) |
| if (redirectResponse.source() != ResourceResponse::Source::ServiceWorker && redirectResponse.source() != ResourceResponse::Source::MemoryCache) |
| m_options.serviceWorkersMode = ServiceWorkersMode::None; |
| #endif |
| makeCrossOriginAccessRequest(ResourceRequest(request)); |
| completionHandler(WTFMove(request)); |
| } |
| |
| void DocumentThreadableLoader::dataSent(CachedResource& resource, unsigned long long bytesSent, unsigned long long totalBytesToBeSent) |
| { |
| ASSERT(m_client); |
| ASSERT_UNUSED(resource, &resource == m_resource); |
| m_client->didSendData(bytesSent, totalBytesToBeSent); |
| } |
| |
| void DocumentThreadableLoader::responseReceived(CachedResource& resource, const ResourceResponse& response, CompletionHandler<void()>&& completionHandler) |
| { |
| ASSERT_UNUSED(resource, &resource == m_resource); |
| if (!m_responsesCanBeOpaque) { |
| ResourceResponse responseWithoutTainting = response; |
| responseWithoutTainting.setTainting(ResourceResponse::Tainting::Basic); |
| didReceiveResponse(m_resource->identifier(), responseWithoutTainting); |
| } else |
| didReceiveResponse(m_resource->identifier(), response); |
| |
| if (completionHandler) |
| completionHandler(); |
| } |
| |
| void DocumentThreadableLoader::didReceiveResponse(unsigned long identifier, const ResourceResponse& response) |
| { |
| ASSERT(m_client); |
| ASSERT(response.type() != ResourceResponse::Type::Error); |
| |
| InspectorInstrumentation::didReceiveThreadableLoaderResponse(*this, identifier); |
| |
| if (m_delayCallbacksForIntegrityCheck) |
| return; |
| |
| if (options().filteringPolicy == ResponseFilteringPolicy::Disable) { |
| m_client->didReceiveResponse(identifier, response); |
| return; |
| } |
| |
| if (response.type() == ResourceResponse::Type::Default) { |
| m_client->didReceiveResponse(identifier, ResourceResponse::filter(response, m_options.credentials == FetchOptions::Credentials::Include ? ResourceResponse::PerformExposeAllHeadersCheck::No : ResourceResponse::PerformExposeAllHeadersCheck::Yes)); |
| if (response.tainting() == ResourceResponse::Tainting::Opaque) { |
| clearResource(); |
| if (m_client) |
| m_client->didFinishLoading(identifier); |
| } |
| return; |
| } |
| ASSERT(response.type() == ResourceResponse::Type::Opaqueredirect || response.source() == ResourceResponse::Source::ServiceWorker || response.source() == ResourceResponse::Source::MemoryCache); |
| m_client->didReceiveResponse(identifier, response); |
| } |
| |
| void DocumentThreadableLoader::dataReceived(CachedResource& resource, const char* data, int dataLength) |
| { |
| ASSERT_UNUSED(resource, &resource == m_resource); |
| didReceiveData(m_resource->identifier(), data, dataLength); |
| } |
| |
| void DocumentThreadableLoader::didReceiveData(unsigned long, const char* data, int dataLength) |
| { |
| ASSERT(m_client); |
| |
| if (m_delayCallbacksForIntegrityCheck) |
| return; |
| |
| m_client->didReceiveData(data, dataLength); |
| } |
| |
| void DocumentThreadableLoader::finishedTimingForWorkerLoad(CachedResource& resource, const ResourceTiming& resourceTiming) |
| { |
| ASSERT(m_client); |
| ASSERT_UNUSED(resource, &resource == m_resource); |
| |
| finishedTimingForWorkerLoad(resourceTiming); |
| } |
| |
| void DocumentThreadableLoader::finishedTimingForWorkerLoad(const ResourceTiming& resourceTiming) |
| { |
| ASSERT(m_options.initiatorContext == InitiatorContext::Worker); |
| |
| m_client->didFinishTiming(resourceTiming); |
| } |
| |
| void DocumentThreadableLoader::notifyFinished(CachedResource& resource) |
| { |
| ASSERT(m_client); |
| ASSERT_UNUSED(resource, &resource == m_resource); |
| |
| if (m_resource->errorOccurred()) |
| didFail(m_resource->identifier(), m_resource->resourceError()); |
| else |
| didFinishLoading(m_resource->identifier()); |
| } |
| |
| void DocumentThreadableLoader::didFinishLoading(unsigned long identifier) |
| { |
| ASSERT(m_client); |
| |
| if (m_delayCallbacksForIntegrityCheck) { |
| if (!matchIntegrityMetadata(*m_resource, m_options.integrity)) { |
| reportIntegrityMetadataError(*m_resource, m_options.integrity); |
| return; |
| } |
| |
| auto response = m_resource->response(); |
| |
| if (options().filteringPolicy == ResponseFilteringPolicy::Disable) { |
| m_client->didReceiveResponse(identifier, response); |
| if (m_resource->resourceBuffer()) |
| m_client->didReceiveData(m_resource->resourceBuffer()->data(), m_resource->resourceBuffer()->size()); |
| } else { |
| ASSERT(response.type() == ResourceResponse::Type::Default); |
| |
| m_client->didReceiveResponse(identifier, ResourceResponse::filter(response, m_options.credentials == FetchOptions::Credentials::Include ? ResourceResponse::PerformExposeAllHeadersCheck::No : ResourceResponse::PerformExposeAllHeadersCheck::Yes)); |
| if (m_resource->resourceBuffer()) |
| m_client->didReceiveData(m_resource->resourceBuffer()->data(), m_resource->resourceBuffer()->size()); |
| } |
| } |
| |
| m_client->didFinishLoading(identifier); |
| } |
| |
| void DocumentThreadableLoader::didFail(unsigned long, const ResourceError& error) |
| { |
| ASSERT(m_client); |
| #if ENABLE(SERVICE_WORKER) |
| if (m_bypassingPreflightForServiceWorkerRequest && error.isCancellation()) { |
| clearResource(); |
| |
| m_options.serviceWorkersMode = ServiceWorkersMode::None; |
| makeCrossOriginAccessRequestWithPreflight(WTFMove(m_bypassingPreflightForServiceWorkerRequest.value())); |
| ASSERT(m_bypassingPreflightForServiceWorkerRequest->isNull()); |
| m_bypassingPreflightForServiceWorkerRequest = WTF::nullopt; |
| return; |
| } |
| #endif |
| |
| if (m_shouldLogError == ShouldLogError::Yes) |
| logError(m_document, error, m_options.initiator); |
| |
| m_client->didFail(error); |
| } |
| |
| void DocumentThreadableLoader::preflightSuccess(ResourceRequest&& request) |
| { |
| ResourceRequest actualRequest(WTFMove(request)); |
| updateRequestForAccessControl(actualRequest, securityOrigin(), m_options.storedCredentialsPolicy); |
| |
| m_preflightChecker = WTF::nullopt; |
| |
| // It should be ok to skip the security check since we already asked about the preflight request. |
| loadRequest(WTFMove(actualRequest), SecurityCheckPolicy::SkipSecurityCheck); |
| } |
| |
| void DocumentThreadableLoader::preflightFailure(unsigned long identifier, const ResourceError& error) |
| { |
| m_preflightChecker = WTF::nullopt; |
| |
| InspectorInstrumentation::didFailLoading(m_document.frame(), m_document.frame()->loader().documentLoader(), identifier, error); |
| |
| if (m_shouldLogError == ShouldLogError::Yes) |
| logError(m_document, error, m_options.initiator); |
| |
| m_client->didFail(error); |
| } |
| |
| void DocumentThreadableLoader::loadRequest(ResourceRequest&& request, SecurityCheckPolicy securityCheck) |
| { |
| Ref<DocumentThreadableLoader> protectedThis(*this); |
| |
| // Any credential should have been removed from the cross-site requests. |
| const URL& requestURL = request.url(); |
| m_options.securityCheck = securityCheck; |
| ASSERT(m_sameOriginRequest || requestURL.user().isEmpty()); |
| ASSERT(m_sameOriginRequest || requestURL.pass().isEmpty()); |
| |
| if (!m_referrer.isNull()) |
| request.setHTTPReferrer(m_referrer); |
| |
| if (m_async) { |
| ResourceLoaderOptions options = m_options; |
| options.clientCredentialPolicy = m_sameOriginRequest ? ClientCredentialPolicy::MayAskClientForCredentials : ClientCredentialPolicy::CannotAskClientForCredentials; |
| options.contentSecurityPolicyImposition = ContentSecurityPolicyImposition::SkipPolicyCheck; |
| |
| // If there is integrity metadata to validate, we must buffer. |
| if (!m_options.integrity.isEmpty()) |
| options.dataBufferingPolicy = DataBufferingPolicy::BufferData; |
| |
| request.setAllowCookies(m_options.storedCredentialsPolicy == StoredCredentialsPolicy::Use); |
| CachedResourceRequest newRequest(WTFMove(request), options); |
| if (RuntimeEnabledFeatures::sharedFeatures().resourceTimingEnabled()) |
| newRequest.setInitiator(m_options.initiator); |
| newRequest.setOrigin(securityOrigin()); |
| |
| ASSERT(!m_resource); |
| if (m_resource) { |
| CachedResourceHandle<CachedRawResource> resource = std::exchange(m_resource, nullptr); |
| resource->removeClient(*this); |
| } |
| |
| auto cachedResource = m_document.cachedResourceLoader().requestRawResource(WTFMove(newRequest)); |
| m_resource = cachedResource.value_or(nullptr); |
| if (m_resource) |
| m_resource->addClient(*this); |
| else |
| logErrorAndFail(cachedResource.error()); |
| return; |
| } |
| |
| // If credentials mode is 'Omit', we should disable cookie sending. |
| ASSERT(m_options.credentials != FetchOptions::Credentials::Omit); |
| |
| LoadTiming loadTiming; |
| loadTiming.markStartTimeAndFetchStart(); |
| |
| // FIXME: ThreadableLoaderOptions.sniffContent is not supported for synchronous requests. |
| RefPtr<SharedBuffer> data; |
| ResourceError error; |
| ResourceResponse response; |
| unsigned long identifier = std::numeric_limits<unsigned long>::max(); |
| if (m_document.frame()) { |
| auto& frameLoader = m_document.frame()->loader(); |
| if (!frameLoader.mixedContentChecker().canRunInsecureContent(m_document.securityOrigin(), requestURL)) |
| return; |
| identifier = frameLoader.loadResourceSynchronously(request, m_options.clientCredentialPolicy, m_options, *m_originalHeaders, error, response, data); |
| } |
| |
| loadTiming.setResponseEnd(MonotonicTime::now()); |
| |
| if (!error.isNull() && response.httpStatusCode() <= 0) { |
| if (requestURL.isLocalFile()) { |
| // We don't want XMLHttpRequest to raise an exception for file:// resources, see <rdar://problem/4962298>. |
| // FIXME: XMLHttpRequest quirks should be in XMLHttpRequest code, not in DocumentThreadableLoader.cpp. |
| didReceiveResponse(identifier, response); |
| didFinishLoading(identifier); |
| return; |
| } |
| logErrorAndFail(error); |
| return; |
| } |
| |
| if (!shouldPerformSecurityChecks()) { |
| // FIXME: FrameLoader::loadSynchronously() 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. |
| bool didRedirect = requestURL != response.url(); |
| if (didRedirect) { |
| if (!isAllowedByContentSecurityPolicy(response.url(), ContentSecurityPolicy::RedirectResponseReceived::Yes)) { |
| reportContentSecurityPolicyError(requestURL); |
| return; |
| } |
| if (!isAllowedRedirect(response.url())) { |
| reportCrossOriginResourceSharingError(requestURL); |
| return; |
| } |
| } |
| |
| if (!m_sameOriginRequest) { |
| if (m_options.mode == FetchOptions::Mode::NoCors) |
| response.setTainting(ResourceResponse::Tainting::Opaque); |
| else { |
| ASSERT(m_options.mode == FetchOptions::Mode::Cors); |
| response.setTainting(ResourceResponse::Tainting::Cors); |
| auto accessControlCheckResult = passesAccessControlCheck(response, m_options.storedCredentialsPolicy, securityOrigin(), &CrossOriginAccessControlCheckDisabler::singleton()); |
| if (!accessControlCheckResult) { |
| logErrorAndFail(ResourceError(errorDomainWebKitInternal, 0, response.url(), accessControlCheckResult.error(), ResourceError::Type::AccessControl)); |
| return; |
| } |
| } |
| } |
| } |
| didReceiveResponse(identifier, response); |
| |
| if (data) |
| didReceiveData(identifier, data->data(), data->size()); |
| |
| if (RuntimeEnabledFeatures::sharedFeatures().resourceTimingEnabled()) { |
| const auto* timing = response.deprecatedNetworkLoadMetricsOrNull(); |
| Optional<NetworkLoadMetrics> empty; |
| if (!timing) { |
| empty.emplace(); |
| timing = &empty.value(); |
| } |
| auto resourceTiming = ResourceTiming::fromSynchronousLoad(requestURL, m_options.initiator, loadTiming, *timing, response, securityOrigin()); |
| if (options().initiatorContext == InitiatorContext::Worker) |
| finishedTimingForWorkerLoad(resourceTiming); |
| else { |
| if (auto* window = document().domWindow()) |
| window->performance().addResourceTiming(WTFMove(resourceTiming)); |
| } |
| } |
| |
| didFinishLoading(identifier); |
| } |
| |
| bool DocumentThreadableLoader::isAllowedByContentSecurityPolicy(const URL& url, ContentSecurityPolicy::RedirectResponseReceived redirectResponseReceived) |
| { |
| switch (m_options.contentSecurityPolicyEnforcement) { |
| case ContentSecurityPolicyEnforcement::DoNotEnforce: |
| return true; |
| case ContentSecurityPolicyEnforcement::EnforceChildSrcDirective: |
| return contentSecurityPolicy().allowChildContextFromSource(url, redirectResponseReceived); |
| case ContentSecurityPolicyEnforcement::EnforceConnectSrcDirective: |
| return contentSecurityPolicy().allowConnectToSource(url, redirectResponseReceived); |
| case ContentSecurityPolicyEnforcement::EnforceScriptSrcDirective: |
| return contentSecurityPolicy().allowScriptFromSource(url, redirectResponseReceived); |
| } |
| ASSERT_NOT_REACHED(); |
| return false; |
| } |
| |
| bool DocumentThreadableLoader::isAllowedRedirect(const URL& url) |
| { |
| if (m_options.mode == FetchOptions::Mode::NoCors) |
| return true; |
| |
| return m_sameOriginRequest && securityOrigin().canRequest(url); |
| } |
| |
| SecurityOrigin& DocumentThreadableLoader::securityOrigin() const |
| { |
| return m_origin ? *m_origin : m_document.securityOrigin(); |
| } |
| |
| const ContentSecurityPolicy& DocumentThreadableLoader::contentSecurityPolicy() const |
| { |
| if (m_contentSecurityPolicy) |
| return *m_contentSecurityPolicy.get(); |
| ASSERT(m_document.contentSecurityPolicy()); |
| return *m_document.contentSecurityPolicy(); |
| } |
| |
| void DocumentThreadableLoader::reportRedirectionWithBadScheme(const URL& url) |
| { |
| logErrorAndFail(ResourceError(errorDomainWebKitInternal, 0, url, "Redirection to URL with a scheme that is not HTTP(S)."_s, ResourceError::Type::AccessControl)); |
| } |
| |
| void DocumentThreadableLoader::reportContentSecurityPolicyError(const URL& url) |
| { |
| logErrorAndFail(ResourceError(errorDomainWebKitInternal, 0, url, "Blocked by Content Security Policy."_s, ResourceError::Type::AccessControl)); |
| } |
| |
| void DocumentThreadableLoader::reportCrossOriginResourceSharingError(const URL& url) |
| { |
| logErrorAndFail(ResourceError(errorDomainWebKitInternal, 0, url, "Cross-origin redirection denied by Cross-Origin Resource Sharing policy."_s, ResourceError::Type::AccessControl)); |
| } |
| |
| void DocumentThreadableLoader::reportIntegrityMetadataError(const CachedResource& resource, const String& expectedMetadata) |
| { |
| logErrorAndFail(ResourceError(errorDomainWebKitInternal, 0, resource.url(), makeString("Failed integrity metadata check. "_s, integrityMismatchDescription(resource, expectedMetadata)), ResourceError::Type::General)); |
| } |
| |
| void DocumentThreadableLoader::logErrorAndFail(const ResourceError& error) |
| { |
| if (m_shouldLogError == ShouldLogError::Yes) { |
| if (error.isAccessControl() && !error.localizedDescription().isEmpty()) |
| m_document.addConsoleMessage(MessageSource::Security, MessageLevel::Error, error.localizedDescription()); |
| logError(m_document, error, m_options.initiator); |
| } |
| ASSERT(m_client); |
| m_client->didFail(error); |
| } |
| |
| } // namespace WebCore |
