/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim:set expandtab ts=4 sw=2 sts=2 cin: */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ // HttpLog.h should generally be included first #include "HttpLog.h" #include #include "DocumentChannelParent.h" #include "mozilla/MozPromiseInlines.h" // For MozPromise::FromDomPromise #include "mozilla/ScopeExit.h" #include "mozilla/Sprintf.h" #include "mozilla/dom/nsCSPContext.h" #include "mozilla/dom/nsCSPService.h" #include "mozilla/StoragePrincipalHelper.h" #include "nsHttp.h" #include "nsHttpChannel.h" #include "nsHttpChannelAuthProvider.h" #include "nsHttpHandler.h" #include "nsString.h" #include "nsIApplicationCacheContainer.h" #include "nsICacheStorageService.h" #include "nsICacheStorage.h" #include "nsICacheEntry.h" #include "nsICryptoHash.h" #include "nsIEffectiveTLDService.h" #include "nsIHttpHeaderVisitor.h" #include "nsINetworkInterceptController.h" #include "nsINSSErrorsService.h" #include "nsISecurityReporter.h" #include "nsIStringBundle.h" #include "nsIStreamListenerTee.h" #include "nsISeekableStream.h" #include "nsIProtocolProxyService2.h" #include "nsMimeTypes.h" #include "nsNetCID.h" #include "nsNetUtil.h" #include "nsIURL.h" #include "nsIStreamTransportService.h" #include "prnetdb.h" #include "nsEscape.h" #include "nsStreamUtils.h" #include "nsIOService.h" #include "nsDNSPrefetch.h" #include "nsChannelClassifier.h" #include "nsIRedirectResultListener.h" #include "mozilla/TimeStamp.h" #include "nsError.h" #include "nsPrintfCString.h" #include "nsAlgorithm.h" #include "nsQueryObject.h" #include "nsThreadUtils.h" #include "GeckoProfiler.h" #include "nsIConsoleService.h" #include "mozilla/AntiTrackingUtils.h" #include "mozilla/Attributes.h" #include "mozilla/BasePrincipal.h" #include "mozilla/ContentBlocking.h" #include "mozilla/DebugOnly.h" #include "mozilla/Preferences.h" #include "mozilla/Services.h" #include "mozilla/StaticPrefs_browser.h" #include "mozilla/StaticPrefs_fission.h" #include "mozilla/StaticPrefs_network.h" #include "mozilla/StaticPrefs_privacy.h" #include "mozilla/StaticPrefs_security.h" #include "sslt.h" #include "nsContentUtils.h" #include "nsContentSecurityManager.h" #include "nsIClassOfService.h" #include "nsIPrincipal.h" #include "nsIScriptError.h" #include "nsIScriptSecurityManager.h" #include "nsITransportSecurityInfo.h" #include "nsIWebProgressListener.h" #include "LoadContextInfo.h" #include "netCore.h" #include "nsHttpTransaction.h" #include "nsICancelable.h" #include "nsIHttpChannelInternal.h" #include "nsIPrompt.h" #include "nsInputStreamPump.h" #include "nsURLHelper.h" #include "nsISocketTransport.h" #include "nsIStreamConverterService.h" #include "nsISiteSecurityService.h" #include "nsString.h" #include "nsCRT.h" #include "CacheObserver.h" #include "mozilla/dom/PerformanceStorage.h" #include "mozilla/Telemetry.h" #include "AlternateServices.h" #include "InterceptedChannel.h" #include "nsIHttpPushListener.h" #include "nsIX509Cert.h" #include "ScopedNSSTypes.h" #include "nsIDeprecationWarner.h" #include "nsIDNSRecord.h" #include "mozilla/dom/Document.h" #include "nsICompressConvStats.h" #include "nsCORSListenerProxy.h" #include "nsISocketProvider.h" #include "mozilla/extensions/StreamFilterParent.h" #include "mozilla/net/Predictor.h" #include "mozilla/MathAlgorithms.h" #include "mozilla/NullPrincipal.h" #include "CacheControlParser.h" #include "nsMixedContentBlocker.h" #include "CacheStorageService.h" #include "HttpChannelParent.h" #include "HttpTransactionParent.h" #include "ParentChannelListener.h" #include "InterceptedHttpChannel.h" #include "../../cache2/CacheFileUtils.h" #include "nsIMultiplexInputStream.h" #include "nsINetworkLinkService.h" #include "mozilla/dom/Promise.h" #include "mozilla/dom/ServiceWorkerUtils.h" #include "mozilla/dom/nsHTTPSOnlyStreamListener.h" #include "mozilla/net/AsyncUrlChannelClassifier.h" #include "mozilla/net/CookieJarSettings.h" #include "mozilla/net/NeckoChannelParams.h" #include "mozilla/net/UrlClassifierFeatureFactory.h" #include "HttpTrafficAnalyzer.h" #include "mozilla/net/SocketProcessParent.h" #include "js/Conversions.h" #include "mozilla/dom/SecFetch.h" #include "mozilla/net/TRRService.h" #ifdef MOZ_TASK_TRACER # include "GeckoTaskTracer.h" #endif namespace mozilla { using namespace dom; namespace net { namespace { // True if the local cache should be bypassed when processing a request. #define BYPASS_LOCAL_CACHE(loadFlags, isPreferCacheLoadOverBypass) \ (loadFlags & (nsIRequest::LOAD_BYPASS_CACHE | \ nsICachingChannel::LOAD_BYPASS_LOCAL_CACHE) && \ !((loadFlags & nsIRequest::LOAD_FROM_CACHE) && \ isPreferCacheLoadOverBypass)) #define RECOVER_FROM_CACHE_FILE_ERROR(result) \ ((result) == NS_ERROR_FILE_NOT_FOUND || \ (result) == NS_ERROR_FILE_CORRUPTED || (result) == NS_ERROR_OUT_OF_MEMORY) #define WRONG_RACING_RESPONSE_SOURCE(req) \ (mRaceCacheWithNetwork && \ (((mFirstResponseSource == RESPONSE_FROM_CACHE) && (req != mCachePump)) || \ ((mFirstResponseSource == RESPONSE_FROM_NETWORK) && \ (req != mTransactionPump)))) static NS_DEFINE_CID(kStreamListenerTeeCID, NS_STREAMLISTENERTEE_CID); void AccumulateCacheHitTelemetry(CacheDisposition hitOrMiss, nsIChannel* aChannel) { nsCString key("UNKNOWN"); nsCOMPtr loadInfo = aChannel->LoadInfo(); nsAutoCString contentType; if (NS_SUCCEEDED(aChannel->GetContentType(contentType))) { if (nsContentUtils::IsJavascriptMIMEType( NS_ConvertUTF8toUTF16(contentType))) { key.AssignLiteral("JAVASCRIPT"); } else if (StringBeginsWith(contentType, "text/css"_ns) || (loadInfo && loadInfo->GetExternalContentPolicyType() == nsIContentPolicy::TYPE_STYLESHEET)) { key.AssignLiteral("STYLESHEET"); } else if (StringBeginsWith(contentType, "application/wasm"_ns)) { key.AssignLiteral("WASM"); } else if (StringBeginsWith(contentType, "image/"_ns)) { key.AssignLiteral("IMAGE"); } else if (StringBeginsWith(contentType, "video/"_ns)) { key.AssignLiteral("MEDIA"); } else if (StringBeginsWith(contentType, "audio/"_ns)) { key.AssignLiteral("MEDIA"); } else if (!StringBeginsWith(contentType, nsLiteralCString(UNKNOWN_CONTENT_TYPE))) { key.AssignLiteral("OTHER"); } } Telemetry::LABELS_HTTP_CACHE_DISPOSITION_3 label = Telemetry::LABELS_HTTP_CACHE_DISPOSITION_3::Unresolved; switch (hitOrMiss) { case kCacheUnresolved: label = Telemetry::LABELS_HTTP_CACHE_DISPOSITION_3::Unresolved; break; case kCacheHit: label = Telemetry::LABELS_HTTP_CACHE_DISPOSITION_3::Hit; break; case kCacheHitViaReval: label = Telemetry::LABELS_HTTP_CACHE_DISPOSITION_3::HitViaReval; break; case kCacheMissedViaReval: label = Telemetry::LABELS_HTTP_CACHE_DISPOSITION_3::MissedViaReval; break; case kCacheMissed: label = Telemetry::LABELS_HTTP_CACHE_DISPOSITION_3::Missed; break; case kCacheUnknown: label = Telemetry::LABELS_HTTP_CACHE_DISPOSITION_3::Unknown; break; } Telemetry::AccumulateCategoricalKeyed(key, label); Telemetry::AccumulateCategoricalKeyed("ALL"_ns, label); } // Computes and returns a SHA1 hash of the input buffer. The input buffer // must be a null-terminated string. nsresult Hash(const char* buf, nsACString& hash) { nsresult rv; nsCOMPtr hasher = do_CreateInstance(NS_CRYPTO_HASH_CONTRACTID, &rv); NS_ENSURE_SUCCESS(rv, rv); rv = hasher->Init(nsICryptoHash::SHA1); NS_ENSURE_SUCCESS(rv, rv); rv = hasher->Update(reinterpret_cast(buf), strlen(buf)); NS_ENSURE_SUCCESS(rv, rv); rv = hasher->Finish(true, hash); NS_ENSURE_SUCCESS(rv, rv); return NS_OK; } bool IsInSubpathOfAppCacheManifest(nsIApplicationCache* cache, nsACString const& uriSpec) { MOZ_ASSERT(cache); nsresult rv; nsCOMPtr uri; rv = NS_NewURI(getter_AddRefs(uri), uriSpec); if (NS_FAILED(rv)) { return false; } nsCOMPtr url(do_QueryInterface(uri, &rv)); if (NS_FAILED(rv)) { return false; } nsAutoCString directory; rv = url->GetDirectory(directory); if (NS_FAILED(rv)) { return false; } nsCOMPtr manifestURI; rv = cache->GetManifestURI(getter_AddRefs(manifestURI)); if (NS_FAILED(rv)) { return false; } nsCOMPtr manifestURL(do_QueryInterface(manifestURI, &rv)); if (NS_FAILED(rv)) { return false; } nsAutoCString manifestDirectory; rv = manifestURL->GetDirectory(manifestDirectory); if (NS_FAILED(rv)) { return false; } return StringBeginsWith(directory, manifestDirectory); } } // unnamed namespace // We only treat 3xx responses as redirects if they have a Location header and // the status code is in a whitelist. bool nsHttpChannel::WillRedirect(const nsHttpResponseHead& response) { return IsRedirectStatus(response.Status()) && response.HasHeader(nsHttp::Location); } nsresult StoreAuthorizationMetaData(nsICacheEntry* entry, nsHttpRequestHead* requestHead); class AutoRedirectVetoNotifier { public: explicit AutoRedirectVetoNotifier(nsHttpChannel* channel) : mChannel(channel) { if (mChannel->mHasAutoRedirectVetoNotifier) { MOZ_CRASH("Nested AutoRedirectVetoNotifier on the stack"); mChannel = nullptr; return; } mChannel->mHasAutoRedirectVetoNotifier = true; } ~AutoRedirectVetoNotifier() { ReportRedirectResult(false); } void RedirectSucceeded() { ReportRedirectResult(true); } private: nsHttpChannel* mChannel; void ReportRedirectResult(bool succeeded); }; void AutoRedirectVetoNotifier::ReportRedirectResult(bool succeeded) { if (!mChannel) return; mChannel->mRedirectChannel = nullptr; if (succeeded) { mChannel->RemoveAsNonTailRequest(); } nsCOMPtr vetoHook; NS_QueryNotificationCallbacks(mChannel, NS_GET_IID(nsIRedirectResultListener), getter_AddRefs(vetoHook)); nsHttpChannel* channel = mChannel; mChannel = nullptr; if (vetoHook) vetoHook->OnRedirectResult(succeeded); // Drop after the notification channel->mHasAutoRedirectVetoNotifier = false; } //----------------------------------------------------------------------------- // nsHttpChannel //----------------------------------------------------------------------------- nsHttpChannel::nsHttpChannel() : HttpAsyncAborter(this), mCacheDisposition(kCacheUnresolved), mLogicalOffset(0), mPostID(0), mRequestTime(0), mOfflineCacheLastModifiedTime(0), mSuspendTotalTime(0), mRedirectType(0), mCacheOpenWithPriority(false), mCacheQueueSizeWhenOpen(0), mCachedContentIsValid(false), mIsAuthChannel(false), mAuthRetryPending(false), mCachedContentIsPartial(false), mCacheOnlyMetadata(false), mTransactionReplaced(false), mProxyAuthPending(false), mCustomAuthHeader(false), mResuming(false), mInitedCacheEntry(false), mFallbackChannel(false), mCustomConditionalRequest(false), mFallingBack(false), mWaitingForRedirectCallback(false), mRequestTimeInitialized(false), mCacheEntryIsReadOnly(false), mCacheEntryIsWriteOnly(false), mCacheEntriesToWaitFor(0), mConcurrentCacheAccess(0), mIsPartialRequest(0), mHasAutoRedirectVetoNotifier(0), mPinCacheContent(0), mIsCorsPreflightDone(0), mStronglyFramed(false), mUsedNetwork(0), mAuthConnectionRestartable(0), mChannelClassifierCancellationPending(0), mAsyncResumePending(0), mHasBeenIsolatedChecked(0), mIsIsolated(0), mTopWindowOriginComputed(0), mDataSentToChildProcess(0), mUseHTTPSSVC(0), mWaitHTTPSSVCRecord(0), mHTTPSSVCTelemetryReported(0), mPushedStreamId(0), mLocalBlocklist(false), mOnTailUnblock(nullptr), mWarningReporter(nullptr), mIsReadingFromCache(false), mFirstResponseSource(RESPONSE_PENDING), mRaceCacheWithNetwork(false), mRaceDelay(0), mIgnoreCacheEntry(false), mRCWNLock("nsHttpChannel.mRCWNLock"), mProxyConnectResponseCode(0), mDidReval(false) { LOG(("Creating nsHttpChannel [this=%p]\n", this)); mChannelCreationTime = PR_Now(); mChannelCreationTimestamp = TimeStamp::Now(); } nsHttpChannel::~nsHttpChannel() { LOG(("Destroying nsHttpChannel [this=%p]\n", this)); if (mAuthProvider) { DebugOnly rv = mAuthProvider->Disconnect(NS_ERROR_ABORT); MOZ_ASSERT(NS_SUCCEEDED(rv)); } ReleaseMainThreadOnlyReferences(); if (gHttpHandler) { gHttpHandler->RemoveHttpChannel(mChannelId); } } void nsHttpChannel::ReleaseMainThreadOnlyReferences() { if (NS_IsMainThread()) { // Already on main thread, let dtor to // take care of releasing references return; } nsTArray> arrayToRelease; arrayToRelease.AppendElement(mApplicationCacheForWrite.forget()); arrayToRelease.AppendElement(mAuthProvider.forget()); arrayToRelease.AppendElement(mRedirectChannel.forget()); arrayToRelease.AppendElement(mPreflightChannel.forget()); arrayToRelease.AppendElement(mDNSPrefetch.forget()); NS_DispatchToMainThread(new ProxyReleaseRunnable(std::move(arrayToRelease))); } nsresult nsHttpChannel::Init(nsIURI* uri, uint32_t caps, nsProxyInfo* proxyInfo, uint32_t proxyResolveFlags, nsIURI* proxyURI, uint64_t channelId, nsContentPolicyType aContentPolicyType) { nsresult rv = HttpBaseChannel::Init(uri, caps, proxyInfo, proxyResolveFlags, proxyURI, channelId, aContentPolicyType); if (NS_FAILED(rv)) return rv; LOG1(("nsHttpChannel::Init [this=%p]\n", this)); return rv; } nsresult nsHttpChannel::AddSecurityMessage(const nsAString& aMessageTag, const nsAString& aMessageCategory) { if (mWarningReporter) { return mWarningReporter->ReportSecurityMessage(aMessageTag, aMessageCategory); } return HttpBaseChannel::AddSecurityMessage(aMessageTag, aMessageCategory); } NS_IMETHODIMP nsHttpChannel::LogBlockedCORSRequest(const nsAString& aMessage, const nsACString& aCategory) { if (mWarningReporter) { return mWarningReporter->LogBlockedCORSRequest(aMessage, aCategory); } return NS_ERROR_UNEXPECTED; } NS_IMETHODIMP nsHttpChannel::LogMimeTypeMismatch(const nsACString& aMessageName, bool aWarning, const nsAString& aURL, const nsAString& aContentType) { if (mWarningReporter) { return mWarningReporter->LogMimeTypeMismatch(aMessageName, aWarning, aURL, aContentType); } return NS_ERROR_UNEXPECTED; } //----------------------------------------------------------------------------- // nsHttpChannel //----------------------------------------------------------------------------- nsresult nsHttpChannel::PrepareToConnect() { LOG(("nsHttpChannel::PrepareToConnect [this=%p]\n", this)); AddCookiesToRequest(); // notify "http-on-modify-request" observers CallOnModifyRequestObservers(); if (mCanceled) { return mStatus; } if (mSuspendCount) { // We abandon the connection here if there was one. LOG(("Waiting until resume OnBeforeConnect [this=%p]\n", this)); MOZ_ASSERT(!mCallOnResume); mCallOnResume = [](nsHttpChannel* self) { self->HandleOnBeforeConnect(); return NS_OK; }; return NS_OK; } return OnBeforeConnect(); } void nsHttpChannel::HandleContinueCancellingByURLClassifier( nsresult aErrorCode) { MOZ_ASSERT( UrlClassifierFeatureFactory::IsClassifierBlockingErrorCode(aErrorCode)); MOZ_ASSERT(!mCallOnResume, "How did that happen?"); if (mSuspendCount) { LOG( ("Waiting until resume HandleContinueCancellingByURLClassifier " "[this=%p]\n", this)); mCallOnResume = [aErrorCode](nsHttpChannel* self) { self->HandleContinueCancellingByURLClassifier(aErrorCode); return NS_OK; }; return; } LOG(("nsHttpChannel::HandleContinueCancellingByURLClassifier [this=%p]\n", this)); ContinueCancellingByURLClassifier(aErrorCode); } void nsHttpChannel::HandleOnBeforeConnect() { MOZ_ASSERT(!mCallOnResume, "How did that happen?"); nsresult rv; if (mSuspendCount) { LOG(("Waiting until resume OnBeforeConnect [this=%p]\n", this)); mCallOnResume = [](nsHttpChannel* self) { self->HandleOnBeforeConnect(); return NS_OK; }; return; } LOG(("nsHttpChannel::HandleOnBeforeConnect [this=%p]\n", this)); rv = OnBeforeConnect(); if (NS_FAILED(rv)) { CloseCacheEntry(false); Unused << AsyncAbort(rv); } } nsresult nsHttpChannel::OnBeforeConnect() { nsresult rv; // Check if request was cancelled during suspend AFTER on-modify-request if (mCanceled) { return mStatus; } // Check to see if we should redirect this channel elsewhere by // nsIHttpChannel.redirectTo API request if (mAPIRedirectToURI) { return AsyncCall(&nsHttpChannel::HandleAsyncAPIRedirect); } // Note that we are only setting the "Upgrade-Insecure-Requests" request // header for *all* navigational requests instead of all requests as // defined in the spec, see: // https://www.w3.org/TR/upgrade-insecure-requests/#preference nsContentPolicyType type = mLoadInfo->GetExternalContentPolicyType(); if (type == nsIContentPolicy::TYPE_DOCUMENT || type == nsIContentPolicy::TYPE_SUBDOCUMENT) { rv = SetRequestHeader("Upgrade-Insecure-Requests"_ns, "1"_ns, false); NS_ENSURE_SUCCESS(rv, rv); } SecFetch::AddSecFetchHeader(this); nsCOMPtr resultPrincipal; if (!mURI->SchemeIs("https")) { nsContentUtils::GetSecurityManager()->GetChannelResultPrincipal( this, getter_AddRefs(resultPrincipal)); } // At this point it is no longer possible to call // HttpBaseChannel::UpgradeToSecure. mUpgradableToSecure = false; bool shouldUpgrade = mUpgradeToSecure; if (mURI->SchemeIs("http")) { OriginAttributes originAttributes; if (!StoragePrincipalHelper::GetOriginAttributesForHSTS(this, originAttributes)) { return NS_ERROR_FAILURE; } if (!shouldUpgrade) { // Make sure http channel is released on main thread. // See bug 1539148 for details. nsMainThreadPtrHandle self( new nsMainThreadPtrHolder( "nsHttpChannel::OnBeforeConnect::self", this)); auto resultCallback = [self(self)](bool aResult, nsresult aStatus) { MOZ_ASSERT(NS_IsMainThread()); // We need to wait for HTTPSSVC record if there is no AltSvc or HSTS // upgrade for this request. if (!aResult && NS_SUCCEEDED(aStatus) && self->mUseHTTPSSVC) { LOG(("nsHttpChannel Wait for HTTPSSVC record [this=%p]\n", self.get())); self->mWaitHTTPSSVCRecord = true; return; } nsresult rv = self->ContinueOnBeforeConnect(aResult, aStatus); if (NS_FAILED(rv)) { self->CloseCacheEntry(false); Unused << self->AsyncAbort(rv); } }; bool willCallback = false; rv = NS_ShouldSecureUpgrade(mURI, mLoadInfo, resultPrincipal, mPrivateBrowsing, mAllowSTS, originAttributes, shouldUpgrade, std::move(resultCallback), willCallback); // If the request gets upgraded because of the HTTPS-Only mode, but no // event listener has been registered so far, we want to do that here. uint32_t httpOnlyStatus = mLoadInfo->GetHttpsOnlyStatus(); if (httpOnlyStatus & nsILoadInfo::HTTPS_ONLY_UPGRADED_LISTENER_NOT_REGISTERED) { RefPtr httpsOnlyListener = new nsHTTPSOnlyStreamListener(mListener, mLoadInfo); mListener = httpsOnlyListener; httpOnlyStatus ^= nsILoadInfo::HTTPS_ONLY_UPGRADED_LISTENER_NOT_REGISTERED; httpOnlyStatus |= nsILoadInfo::HTTPS_ONLY_UPGRADED_LISTENER_REGISTERED; mLoadInfo->SetHttpsOnlyStatus(httpOnlyStatus); } LOG( ("nsHttpChannel::OnBeforeConnect " "[this=%p willCallback=%d rv=%" PRIx32 "]\n", this, willCallback, static_cast(rv))); if (NS_FAILED(rv) || MOZ_UNLIKELY(willCallback)) { return rv; } } } return ContinueOnBeforeConnect(shouldUpgrade, NS_OK); } nsresult nsHttpChannel::ContinueOnBeforeConnect(bool aShouldUpgrade, nsresult aStatus) { LOG( ("nsHttpChannel::ContinueOnBeforeConnect " "[this=%p aShouldUpgrade=%d rv=%" PRIx32 "]\n", this, aShouldUpgrade, static_cast(aStatus))); if (NS_FAILED(aStatus)) { return aStatus; } if (aShouldUpgrade) { return AsyncCall(&nsHttpChannel::HandleAsyncRedirectChannelToHttps); } // ensure that we are using a valid hostname if (!net_IsValidHostName(nsDependentCString(mConnectionInfo->Origin()))) return NS_ERROR_UNKNOWN_HOST; if (mUpgradeProtocolCallback) { // Websockets can run over HTTP/2, but other upgrades can't. if (mUpgradeProtocol.EqualsLiteral("websocket") && gHttpHandler->IsH2WebsocketsEnabled()) { // Need to tell the conn manager that we're ok with http/2 even with // the allow keepalive bit not set. That bit needs to stay off, // though, in case we end up having to fallback to http/1.1 (where // we absolutely do want to disable keepalive). mCaps |= NS_HTTP_ALLOW_SPDY_WITHOUT_KEEPALIVE; } else { mCaps |= NS_HTTP_DISALLOW_SPDY; } // Upgrades cannot use HTTP/3. mCaps |= NS_HTTP_DISALLOW_HTTP3; } if (mIsTRRServiceChannel) { mCaps |= NS_HTTP_LARGE_KEEPALIVE; } mCaps |= NS_HTTP_TRR_FLAGS_FROM_MODE(nsIRequest::GetTRRMode()); // Finalize ConnectionInfo flags before SpeculativeConnect mConnectionInfo->SetAnonymous((mLoadFlags & LOAD_ANONYMOUS) != 0); mConnectionInfo->SetPrivate(mPrivateBrowsing); mConnectionInfo->SetIsolated(IsIsolated()); mConnectionInfo->SetNoSpdy(mCaps & NS_HTTP_DISALLOW_SPDY); mConnectionInfo->SetBeConservative((mCaps & NS_HTTP_BE_CONSERVATIVE) || mBeConservative); mConnectionInfo->SetTlsFlags(mTlsFlags); mConnectionInfo->SetIsTrrServiceChannel(mIsTRRServiceChannel); mConnectionInfo->SetTRRMode(nsIRequest::GetTRRMode()); mConnectionInfo->SetIPv4Disabled(mCaps & NS_HTTP_DISABLE_IPV4); mConnectionInfo->SetIPv6Disabled(mCaps & NS_HTTP_DISABLE_IPV6); if (mHTTPSSVCRecord) { MOZ_ASSERT(mURI->SchemeIs("https")); LOG((" Using connection info with HTTPSSVC record")); nsCOMPtr rec; mHTTPSSVCRecord.swap(rec); bool http3Allowed = !mUpgradeProtocolCallback && !mProxyInfo && !(mCaps & NS_HTTP_BE_CONSERVATIVE) && !mBeConservative; nsCOMPtr record; if (NS_SUCCEEDED(rec->GetServiceModeRecord(mCaps & NS_HTTP_DISALLOW_SPDY, !http3Allowed, getter_AddRefs(record)))) { MOZ_ASSERT(record); RefPtr newConnInfo = mConnectionInfo->CloneAndAdoptHTTPSSVCRecord(record); mConnectionInfo = std::move(newConnInfo); } } // notify "http-on-before-connect" observers gHttpHandler->OnBeforeConnect(this); // Check if request was cancelled during http-on-before-connect. if (mCanceled) { return mStatus; } if (mSuspendCount) { // We abandon the connection here if there was one. LOG(("Waiting until resume OnBeforeConnect [this=%p]\n", this)); MOZ_ASSERT(!mCallOnResume); mCallOnResume = [](nsHttpChannel* self) { self->OnBeforeConnectContinue(); return NS_OK; }; return NS_OK; } return Connect(); } void nsHttpChannel::OnBeforeConnectContinue() { MOZ_ASSERT(!mCallOnResume, "How did that happen?"); nsresult rv; if (mSuspendCount) { LOG(("Waiting until resume OnBeforeConnect [this=%p]\n", this)); mCallOnResume = [](nsHttpChannel* self) { self->OnBeforeConnectContinue(); return NS_OK; }; return; } LOG(("nsHttpChannel::OnBeforeConnectContinue [this=%p]\n", this)); rv = Connect(); if (NS_FAILED(rv)) { CloseCacheEntry(false); Unused << AsyncAbort(rv); } } nsresult nsHttpChannel::Connect() { LOG(("nsHttpChannel::Connect [this=%p]\n", this)); // Don't allow resuming when cache must be used if (mResuming && (mLoadFlags & LOAD_ONLY_FROM_CACHE)) { LOG(("Resuming from cache is not supported yet")); return NS_ERROR_DOCUMENT_NOT_CACHED; } if (ShouldIntercept()) { return RedirectToInterceptedChannel(); } bool isTrackingResource = IsThirdPartyTrackingResource(); LOG(("nsHttpChannel %p tracking resource=%d, cos=%u", this, isTrackingResource, mClassOfService)); if (isTrackingResource) { AddClassFlags(nsIClassOfService::Tail); } if (WaitingForTailUnblock()) { MOZ_DIAGNOSTIC_ASSERT(!mOnTailUnblock); mOnTailUnblock = &nsHttpChannel::ConnectOnTailUnblock; return NS_OK; } return ConnectOnTailUnblock(); } nsresult nsHttpChannel::ConnectOnTailUnblock() { nsresult rv; LOG(("nsHttpChannel::ConnectOnTailUnblock [this=%p]\n", this)); // Consider opening a TCP connection right away. SpeculativeConnect(); // open a cache entry for this channel... rv = OpenCacheEntry(mURI->SchemeIs("https")); // do not continue if asyncOpenCacheEntry is in progress if (AwaitingCacheCallbacks()) { LOG(("nsHttpChannel::Connect %p AwaitingCacheCallbacks forces async\n", this)); MOZ_ASSERT(NS_SUCCEEDED(rv), "Unexpected state"); if (mNetworkTriggered && mWaitingForProxy) { // Someone has called TriggerNetwork(), meaning we are racing the // network with the cache. mWaitingForProxy = false; return ContinueConnect(); } return NS_OK; } if (NS_FAILED(rv)) { LOG(("OpenCacheEntry failed [rv=%" PRIx32 "]\n", static_cast(rv))); // if this channel is only allowed to pull from the cache, then // we must fail if we were unable to open a cache entry. if (mLoadFlags & LOAD_ONLY_FROM_CACHE) { // If we have a fallback URI (and we're not already // falling back), process the fallback asynchronously. if (!mFallbackChannel && !mFallbackKey.IsEmpty()) { return AsyncCall(&nsHttpChannel::HandleAsyncFallback); } return NS_ERROR_DOCUMENT_NOT_CACHED; } // otherwise, let's just proceed without using the cache. } if (mRaceCacheWithNetwork && ((mCacheEntry && !mCachedContentIsValid && (mDidReval || mCachedContentIsPartial)) || mIgnoreCacheEntry)) { // We won't send the conditional request because the unconditional // request was already sent (see bug 1377223). AccumulateCategorical( Telemetry::LABELS_NETWORK_RACE_CACHE_VALIDATION::NotSent); } // When racing, if OnCacheEntryAvailable is called before AsyncOpenURI // returns, then we may not have started reading from the cache. // If the content is valid, we should attempt to do so, as technically the // cache has won the race. if (mRaceCacheWithNetwork && mCachedContentIsValid) { Unused << ReadFromCache(true); } return TriggerNetwork(); } nsresult nsHttpChannel::ContinueConnect() { // If we need to start a CORS preflight, do it now! // Note that it is important to do this before the early returns below. if (!mIsCorsPreflightDone && mRequireCORSPreflight) { MOZ_ASSERT(!mPreflightChannel); nsresult rv = nsCORSListenerProxy::StartCORSPreflight( this, this, mUnsafeHeaders, getter_AddRefs(mPreflightChannel)); return rv; } MOZ_RELEASE_ASSERT(!mRequireCORSPreflight || mIsCorsPreflightDone, "CORS preflight must have been finished by the time we " "do the rest of ContinueConnect"); // we may or may not have a cache entry at this point if (mCacheEntry) { // read straight from the cache if possible... if (mCachedContentIsValid) { nsRunnableMethod* event = nullptr; nsresult rv; if (!mCachedContentIsPartial) { rv = AsyncCall(&nsHttpChannel::AsyncOnExamineCachedResponse, &event); if (NS_FAILED(rv)) { LOG((" AsyncCall failed (%08x)", static_cast(rv))); } } rv = ReadFromCache(true); if (NS_FAILED(rv) && event) { event->Revoke(); } AccumulateCacheHitTelemetry(kCacheHit, this); mCacheDisposition = kCacheHit; return rv; } if (mLoadFlags & LOAD_ONLY_FROM_CACHE) { // the cache contains the requested resource, but it must be // validated before we can reuse it. since we are not allowed // to hit the net, there's nothing more to do. the document // is effectively not in the cache. LOG((" !mCachedContentIsValid && mLoadFlags & LOAD_ONLY_FROM_CACHE")); return NS_ERROR_DOCUMENT_NOT_CACHED; } } else if (mLoadFlags & LOAD_ONLY_FROM_CACHE) { // If we have a fallback URI (and we're not already // falling back), process the fallback asynchronously. if (!mFallbackChannel && !mFallbackKey.IsEmpty()) { return AsyncCall(&nsHttpChannel::HandleAsyncFallback); } LOG((" !mCacheEntry && mLoadFlags & LOAD_ONLY_FROM_CACHE")); return NS_ERROR_DOCUMENT_NOT_CACHED; } if (mLoadFlags & LOAD_NO_NETWORK_IO) { LOG((" mLoadFlags & LOAD_NO_NETWORK_IO")); return NS_ERROR_DOCUMENT_NOT_CACHED; } // hit the net... return DoConnect(); } nsresult nsHttpChannel::DoConnect(HttpTransactionShell* aTransWithStickyConn) { LOG(("nsHttpChannel::DoConnect [this=%p]\n", this)); if (!mDNSBlockingPromise.IsEmpty()) { LOG((" waiting for DNS prefetch")); // Transaction is passed only from auth retry for which we will definitely // not block on DNS to alter the origin server name for IP; it has already // been done. MOZ_ASSERT(!aTransWithStickyConn); MOZ_ASSERT(mDNSBlockingThenable); nsCOMPtr target(do_GetMainThread()); RefPtr self(this); mDNSBlockingThenable->Then( target, __func__, [self](const nsCOMPtr& aRec) { nsresult rv = self->DoConnectActual(nullptr); if (NS_FAILED(rv)) { self->CloseCacheEntry(false); Unused << self->AsyncAbort(rv); } }, [self](nsresult err) { self->CloseCacheEntry(false); Unused << self->AsyncAbort(err); }); // The connection will continue when the promise is resolved in // OnLookupComplete. return NS_OK; } return DoConnectActual(aTransWithStickyConn); } nsresult nsHttpChannel::DoConnectActual( HttpTransactionShell* aTransWithStickyConn) { LOG(("nsHttpChannel::DoConnectActual [this=%p, aTransWithStickyConn=%p]\n", this, aTransWithStickyConn)); nsresult rv = SetupTransaction(); if (NS_FAILED(rv)) { return rv; } if (aTransWithStickyConn) { rv = gHttpHandler->InitiateTransactionWithStickyConn( mTransaction, mPriority, aTransWithStickyConn); } else { rv = gHttpHandler->InitiateTransaction(mTransaction, mPriority); } if (NS_FAILED(rv)) { return rv; } rv = mTransaction->AsyncRead(this, getter_AddRefs(mTransactionPump)); if (NS_FAILED(rv)) { return rv; } uint32_t suspendCount = mSuspendCount; if (mAsyncResumePending) { LOG( (" Suspend()'ing transaction pump once because of async resume pending" ", sc=%u, pump=%p, this=%p", suspendCount, mTransactionPump.get(), this)); ++suspendCount; } while (suspendCount--) { mTransactionPump->Suspend(); } return NS_OK; } void nsHttpChannel::SpeculativeConnect() { // Before we take the latency hit of dealing with the cache, try and // get the TCP (and SSL) handshakes going so they can overlap. // don't speculate if we are on uses of the offline application cache, // if we are offline, when doing http upgrade (i.e. // websockets bootstrap), or if we can't do keep-alive (because then we // couldn't reuse the speculative connection anyhow). if (mApplicationCache || gIOService->IsOffline() || mUpgradeProtocolCallback || !(mCaps & NS_HTTP_ALLOW_KEEPALIVE)) return; // LOAD_ONLY_FROM_CACHE and LOAD_NO_NETWORK_IO must not hit network. // LOAD_FROM_CACHE and LOAD_CHECK_OFFLINE_CACHE are unlikely to hit network, // so skip preconnects for them. if (mLoadFlags & (LOAD_ONLY_FROM_CACHE | LOAD_FROM_CACHE | LOAD_NO_NETWORK_IO | LOAD_CHECK_OFFLINE_CACHE)) return; if (mAllowStaleCacheContent) { return; } nsCOMPtr callbacks; NS_NewNotificationCallbacksAggregation(mCallbacks, mLoadGroup, getter_AddRefs(callbacks)); if (!callbacks) return; Unused << gHttpHandler->SpeculativeConnect( mConnectionInfo, callbacks, mCaps & (NS_HTTP_DISALLOW_SPDY | NS_HTTP_TRR_MODE_MASK | NS_HTTP_DISABLE_IPV4 | NS_HTTP_DISABLE_IPV6 | NS_HTTP_DISALLOW_HTTP3), gHttpHandler->UseHTTPSRRForSpeculativeConnection()); } void nsHttpChannel::DoNotifyListenerCleanup() { // We don't need this info anymore CleanRedirectCacheChainIfNecessary(); } void nsHttpChannel::ReleaseListeners() { HttpBaseChannel::ReleaseListeners(); mChannelClassifier = nullptr; mWarningReporter = nullptr; } void nsHttpChannel::DoAsyncAbort(nsresult aStatus) { Unused << AsyncAbort(aStatus); } void nsHttpChannel::HandleAsyncRedirect() { MOZ_ASSERT(!mCallOnResume, "How did that happen?"); if (mSuspendCount) { LOG(("Waiting until resume to do async redirect [this=%p]\n", this)); mCallOnResume = [](nsHttpChannel* self) { self->HandleAsyncRedirect(); return NS_OK; }; return; } nsresult rv = NS_OK; LOG(("nsHttpChannel::HandleAsyncRedirect [this=%p]\n", this)); // since this event is handled asynchronously, it is possible that this // channel could have been canceled, in which case there would be no point // in processing the redirect. if (NS_SUCCEEDED(mStatus)) { PushRedirectAsyncFunc(&nsHttpChannel::ContinueHandleAsyncRedirect); rv = AsyncProcessRedirection(mResponseHead->Status()); if (NS_FAILED(rv)) { PopRedirectAsyncFunc(&nsHttpChannel::ContinueHandleAsyncRedirect); // TODO: if !DoNotRender3xxBody(), render redirect body instead. // But first we need to cache 3xx bodies (bug 748510) rv = ContinueHandleAsyncRedirect(rv); MOZ_ASSERT(NS_SUCCEEDED(rv)); } } else { rv = ContinueHandleAsyncRedirect(mStatus); MOZ_ASSERT(NS_SUCCEEDED(rv)); } } nsresult nsHttpChannel::ContinueHandleAsyncRedirect(nsresult rv) { if (NS_FAILED(rv)) { // If AsyncProcessRedirection fails, then we have to send out the // OnStart/OnStop notifications. LOG(("ContinueHandleAsyncRedirect got failure result [rv=%" PRIx32 "]\n", static_cast(rv))); bool redirectsEnabled = !mLoadInfo->GetDontFollowRedirects(); if (redirectsEnabled) { // TODO: stop failing original channel if redirect vetoed? mStatus = rv; DoNotifyListener(); // Blow away cache entry if we couldn't process the redirect // for some reason (the cache entry might be corrupt). if (mCacheEntry) { mCacheEntry->AsyncDoom(nullptr); } } else { DoNotifyListener(); } } CloseCacheEntry(true); mIsPending = false; if (mLoadGroup) mLoadGroup->RemoveRequest(this, nullptr, mStatus); return NS_OK; } void nsHttpChannel::HandleAsyncNotModified() { MOZ_ASSERT(!mCallOnResume, "How did that happen?"); if (mSuspendCount) { LOG(("Waiting until resume to do async not-modified [this=%p]\n", this)); mCallOnResume = [](nsHttpChannel* self) { self->HandleAsyncNotModified(); return NS_OK; }; return; } LOG(("nsHttpChannel::HandleAsyncNotModified [this=%p]\n", this)); DoNotifyListener(); CloseCacheEntry(false); mIsPending = false; if (mLoadGroup) mLoadGroup->RemoveRequest(this, nullptr, mStatus); } void nsHttpChannel::HandleAsyncFallback() { MOZ_ASSERT(!mCallOnResume, "How did that happen?"); if (mSuspendCount) { LOG(("Waiting until resume to do async fallback [this=%p]\n", this)); mCallOnResume = [](nsHttpChannel* self) { self->HandleAsyncFallback(); return NS_OK; }; return; } nsresult rv = NS_OK; LOG(("nsHttpChannel::HandleAsyncFallback [this=%p]\n", this)); // since this event is handled asynchronously, it is possible that this // channel could have been canceled, in which case there would be no point // in processing the fallback. if (!mCanceled) { PushRedirectAsyncFunc(&nsHttpChannel::ContinueHandleAsyncFallback); bool waitingForRedirectCallback; rv = ProcessFallback(&waitingForRedirectCallback); if (waitingForRedirectCallback) return; PopRedirectAsyncFunc(&nsHttpChannel::ContinueHandleAsyncFallback); } rv = ContinueHandleAsyncFallback(rv); MOZ_ASSERT(NS_SUCCEEDED(rv)); } nsresult nsHttpChannel::ContinueHandleAsyncFallback(nsresult rv) { if (!mCanceled && (NS_FAILED(rv) || !mFallingBack)) { // If ProcessFallback fails, then we have to send out the // OnStart/OnStop notifications. LOG(("ProcessFallback failed [rv=%" PRIx32 ", %d]\n", static_cast(rv), mFallingBack)); mStatus = NS_FAILED(rv) ? rv : NS_ERROR_DOCUMENT_NOT_CACHED; DoNotifyListener(); } mIsPending = false; if (mLoadGroup) mLoadGroup->RemoveRequest(this, nullptr, mStatus); return rv; } nsresult nsHttpChannel::SetupTransaction() { LOG(("nsHttpChannel::SetupTransaction [this=%p, cos=%u, prio=%d]\n", this, mClassOfService, mPriority)); NS_ENSURE_TRUE(!mTransaction, NS_ERROR_ALREADY_INITIALIZED); nsresult rv; mozilla::MutexAutoLock lock(mRCWNLock); // If we're racing cache with network, conditional or byte range header // could be added in OnCacheEntryCheck. We cannot send conditional request // without having the entry, so we need to remove the headers here and // ignore the cache entry in OnCacheEntryAvailable. if (mRaceCacheWithNetwork && AwaitingCacheCallbacks()) { if (mDidReval) { LOG((" Removing conditional request headers")); UntieValidationRequest(); mDidReval = false; mIgnoreCacheEntry = true; } if (mCachedContentIsPartial) { LOG((" Removing byte range request headers")); UntieByteRangeRequest(); mCachedContentIsPartial = false; mIgnoreCacheEntry = true; } if (mIgnoreCacheEntry) { mAvailableCachedAltDataType.Truncate(); mDeliveringAltData = false; mAltDataLength = -1; mCacheInputStream.CloseAndRelease(); } } mUsedNetwork = 1; if (!mAllowSpdy) { mCaps |= NS_HTTP_DISALLOW_SPDY; } if (!mAllowHttp3) { mCaps |= NS_HTTP_DISALLOW_HTTP3; } if (mBeConservative) { mCaps |= NS_HTTP_BE_CONSERVATIVE; } // Use the URI path if not proxying (transparent proxying such as proxy // CONNECT does not count here). Also figure out what HTTP version to use. nsAutoCString buf, path; nsCString* requestURI; // This is the normal e2e H1 path syntax "/index.html" rv = mURI->GetPathQueryRef(path); if (NS_FAILED(rv)) { return rv; } // path may contain UTF-8 characters, so ensure that they're escaped. if (NS_EscapeURL(path.get(), path.Length(), esc_OnlyNonASCII | esc_Spaces, buf)) { requestURI = &buf; } else { requestURI = &path; } // trim off the #ref portion if any... int32_t ref1 = requestURI->FindChar('#'); if (ref1 != kNotFound) { requestURI->SetLength(ref1); } if (mConnectionInfo->UsingConnect() || !mConnectionInfo->UsingHttpProxy()) { mRequestHead.SetVersion(gHttpHandler->HttpVersion()); } else { mRequestHead.SetPath(*requestURI); // RequestURI should be the absolute uri H1 proxy syntax // "http://foo/index.html" so we will overwrite the relative version in // requestURI rv = mURI->GetUserPass(buf); if (NS_FAILED(rv)) return rv; if (!buf.IsEmpty() && ((strncmp(mSpec.get(), "http:", 5) == 0) || strncmp(mSpec.get(), "https:", 6) == 0)) { nsCOMPtr tempURI = nsIOService::CreateExposableURI(mURI); rv = tempURI->GetAsciiSpec(path); if (NS_FAILED(rv)) return rv; requestURI = &path; } else { requestURI = &mSpec; } // trim off the #ref portion if any... int32_t ref2 = requestURI->FindChar('#'); if (ref2 != kNotFound) { requestURI->SetLength(ref2); } mRequestHead.SetVersion(gHttpHandler->ProxyHttpVersion()); } mRequestHead.SetRequestURI(*requestURI); // set the request time for cache expiration calculations mRequestTime = NowInSeconds(); mRequestTimeInitialized = true; // if doing a reload, force end-to-end if (mLoadFlags & LOAD_BYPASS_CACHE) { // We need to send 'Pragma:no-cache' to inhibit proxy caching even if // no proxy is configured since we might be talking with a transparent // proxy, i.e. one that operates at the network level. See bug #14772. rv = mRequestHead.SetHeaderOnce(nsHttp::Pragma, "no-cache", true); MOZ_ASSERT(NS_SUCCEEDED(rv)); // If we're configured to speak HTTP/1.1 then also send 'Cache-control: // no-cache' if (mRequestHead.Version() >= HttpVersion::v1_1) { rv = mRequestHead.SetHeaderOnce(nsHttp::Cache_Control, "no-cache", true); MOZ_ASSERT(NS_SUCCEEDED(rv)); } } else if ((mLoadFlags & VALIDATE_ALWAYS) && !mCacheEntryIsWriteOnly) { // We need to send 'Cache-Control: max-age=0' to force each cache along // the path to the origin server to revalidate its own entry, if any, // with the next cache or server. See bug #84847. // // If we're configured to speak HTTP/1.0 then just send 'Pragma: no-cache' if (mRequestHead.Version() >= HttpVersion::v1_1) rv = mRequestHead.SetHeaderOnce(nsHttp::Cache_Control, "max-age=0", true); else rv = mRequestHead.SetHeaderOnce(nsHttp::Pragma, "no-cache", true); MOZ_ASSERT(NS_SUCCEEDED(rv)); } if (mResuming) { char byteRange[32]; SprintfLiteral(byteRange, "bytes=%" PRIu64 "-", mStartPos); rv = mRequestHead.SetHeader(nsHttp::Range, nsDependentCString(byteRange)); MOZ_ASSERT(NS_SUCCEEDED(rv)); if (!mEntityID.IsEmpty()) { // Also, we want an error if this resource changed in the meantime // Format of the entity id is: escaped_etag/size/lastmod nsCString::const_iterator start, end, slash; mEntityID.BeginReading(start); mEntityID.EndReading(end); mEntityID.BeginReading(slash); if (FindCharInReadable('/', slash, end)) { nsAutoCString ifMatch; rv = mRequestHead.SetHeader( nsHttp::If_Match, NS_UnescapeURL(Substring(start, slash), 0, ifMatch)); MOZ_ASSERT(NS_SUCCEEDED(rv)); ++slash; // Incrementing, so that searching for '/' won't find // the same slash again } if (FindCharInReadable('/', slash, end)) { rv = mRequestHead.SetHeader(nsHttp::If_Unmodified_Since, Substring(++slash, end)); MOZ_ASSERT(NS_SUCCEEDED(rv)); } } } // create wrapper for this channel's notification callbacks nsCOMPtr callbacks; NS_NewNotificationCallbacksAggregation(mCallbacks, mLoadGroup, getter_AddRefs(callbacks)); // create the transaction object if (nsIOService::UseSocketProcess()) { MOZ_ASSERT(gIOService->SocketProcessReady(), "Socket process should be ready."); nsCOMPtr parentChannel; NS_QueryNotificationCallbacks(this, parentChannel); RefPtr documentChannelParent = do_QueryObject(parentChannel); // See HttpTransactionChild::CanSendODAToContentProcessDirectly() and // nsHttpChannel::CallOnStartRequest() for the reason why we need to know if // this is a document load. We only send ODA directly to child process for // non document loads. RefPtr transParent = new HttpTransactionParent(!!documentChannelParent); LOG1(("nsHttpChannel %p created HttpTransactionParent %p\n", this, transParent.get())); // Since OnStopRequest could be sent to child process from socket process // directly, we need to store these two values in HttpTransactionChild and // forward to child process until HttpTransactionChild::OnStopRequest is // called. transParent->SetRedirectTimestamp(mRedirectStartTimeStamp, mRedirectEndTimeStamp); SocketProcessParent* socketProcess = SocketProcessParent::GetSingleton(); if (socketProcess) { Unused << socketProcess->SendPHttpTransactionConstructor(transParent); } mTransaction = transParent; } else { mTransaction = new nsHttpTransaction(); LOG1(("nsHttpChannel %p created nsHttpTransaction %p\n", this, mTransaction.get())); } // Save the mapping of channel id and the channel. We need this mapping for // nsIHttpActivityObserver. gHttpHandler->AddHttpChannel(mChannelId, ToSupports(this)); // See bug #466080. Transfer LOAD_ANONYMOUS flag to socket-layer. if (mLoadFlags & LOAD_ANONYMOUS) mCaps |= NS_HTTP_LOAD_ANONYMOUS; if (mLoadFlags & LOAD_CALL_CONTENT_SNIFFERS) { mCaps |= NS_HTTP_CALL_CONTENT_SNIFFER; } if (mTimingEnabled) mCaps |= NS_HTTP_TIMING_ENABLED; if (mUpgradeProtocolCallback) { rv = mRequestHead.SetHeader(nsHttp::Upgrade, mUpgradeProtocol, false); MOZ_ASSERT(NS_SUCCEEDED(rv)); rv = mRequestHead.SetHeaderOnce(nsHttp::Connection, nsHttp::Upgrade.get(), true); MOZ_ASSERT(NS_SUCCEEDED(rv)); mCaps |= NS_HTTP_STICKY_CONNECTION; mCaps &= ~NS_HTTP_ALLOW_KEEPALIVE; } nsCOMPtr pushListener; NS_QueryNotificationCallbacks(mCallbacks, mLoadGroup, NS_GET_IID(nsIHttpPushListener), getter_AddRefs(pushListener)); HttpTransactionShell::OnPushCallback pushCallback = nullptr; if (pushListener) { mCaps |= NS_HTTP_ONPUSH_LISTENER; nsWeakPtr weakPtrThis( do_GetWeakReference(static_cast(this))); pushCallback = [weakPtrThis](uint32_t aPushedStreamId, const nsACString& aUrl, const nsACString& aRequestString, HttpTransactionShell* aTransaction) { if (nsCOMPtr channel = do_QueryReferent(weakPtrThis)) { return static_cast(channel.get()) ->OnPush(aPushedStreamId, aUrl, aRequestString, aTransaction); } return NS_ERROR_NOT_AVAILABLE; }; } EnsureTopLevelOuterContentWindowId(); EnsureRequestContext(); HttpTrafficCategory category = CreateTrafficCategory(); std::function observer; if (mTransactionObserver) { observer = [transactionObserver{std::move(mTransactionObserver)}]( TransactionObserverResult&& aResult) { transactionObserver->Complete(aResult.versionOk(), aResult.authOk(), aResult.closeReason()); }; } rv = mTransaction->Init( mCaps, mConnectionInfo, &mRequestHead, mUploadStream, mReqContentLength, mUploadStreamHasHeaders, GetCurrentEventTarget(), callbacks, this, mTopLevelOuterContentWindowId, category, mRequestContext, mClassOfService, mInitialRwin, mResponseTimeoutEnabled, mChannelId, std::move(observer), std::move(pushCallback), mTransWithPushedStream, mPushedStreamId); if (NS_FAILED(rv)) { mTransaction = nullptr; return rv; } return rv; } HttpTrafficCategory nsHttpChannel::CreateTrafficCategory() { MOZ_ASSERT(!mFirstPartyClassificationFlags || !mThirdPartyClassificationFlags); if (!StaticPrefs::network_traffic_analyzer_enabled()) { return HttpTrafficCategory::eInvalid; } HttpTrafficAnalyzer::ClassOfService cos; { if ((mClassOfService & nsIClassOfService::Leader) && mLoadInfo->GetExternalContentPolicyType() == nsIContentPolicy::TYPE_SCRIPT) { cos = HttpTrafficAnalyzer::ClassOfService::eLeader; } else if (mLoadFlags & nsIRequest::LOAD_BACKGROUND) { cos = HttpTrafficAnalyzer::ClassOfService::eBackground; } else { cos = HttpTrafficAnalyzer::ClassOfService::eOther; } } bool isThirdParty = nsContentUtils::IsThirdPartyWindowOrChannel(nullptr, this, mURI); HttpTrafficAnalyzer::TrackingClassification tc; { uint32_t flags = isThirdParty ? mThirdPartyClassificationFlags : mFirstPartyClassificationFlags; using CF = nsIClassifiedChannel::ClassificationFlags; using TC = HttpTrafficAnalyzer::TrackingClassification; if (flags & CF::CLASSIFIED_TRACKING_CONTENT) { tc = TC::eContent; } else if (flags & CF::CLASSIFIED_FINGERPRINTING_CONTENT) { tc = TC::eFingerprinting; } else if (flags & CF::CLASSIFIED_ANY_BASIC_TRACKING) { tc = TC::eBasic; } else { tc = TC::eNone; } } bool isSystemPrincipal = mLoadInfo->GetLoadingPrincipal() && mLoadInfo->GetLoadingPrincipal()->IsSystemPrincipal(); return HttpTrafficAnalyzer::CreateTrafficCategory( NS_UsePrivateBrowsing(this), isSystemPrincipal, isThirdParty, cos, tc); } void nsHttpChannel::SetCachedContentType() { if (!mResponseHead) { return; } nsAutoCString contentTypeStr; mResponseHead->ContentType(contentTypeStr); uint8_t contentType = nsICacheEntry::CONTENT_TYPE_OTHER; if (nsContentUtils::IsJavascriptMIMEType( NS_ConvertUTF8toUTF16(contentTypeStr))) { contentType = nsICacheEntry::CONTENT_TYPE_JAVASCRIPT; } else if (StringBeginsWith(contentTypeStr, "text/css"_ns) || (mLoadInfo->GetExternalContentPolicyType() == nsIContentPolicy::TYPE_STYLESHEET)) { contentType = nsICacheEntry::CONTENT_TYPE_STYLESHEET; } else if (StringBeginsWith(contentTypeStr, "application/wasm"_ns)) { contentType = nsICacheEntry::CONTENT_TYPE_WASM; } else if (StringBeginsWith(contentTypeStr, "image/"_ns)) { contentType = nsICacheEntry::CONTENT_TYPE_IMAGE; } else if (StringBeginsWith(contentTypeStr, "video/"_ns)) { contentType = nsICacheEntry::CONTENT_TYPE_MEDIA; } else if (StringBeginsWith(contentTypeStr, "audio/"_ns)) { contentType = nsICacheEntry::CONTENT_TYPE_MEDIA; } mCacheEntry->SetContentType(contentType); } nsresult nsHttpChannel::CallOnStartRequest() { LOG(("nsHttpChannel::CallOnStartRequest [this=%p]", this)); MOZ_RELEASE_ASSERT(!mRequireCORSPreflight || mIsCorsPreflightDone, "CORS preflight must have been finished by the time we " "call OnStartRequest"); if (mOnStartRequestCalled) { // This can only happen when a range request loading rest of the data // after interrupted concurrent cache read asynchronously failed, e.g. // the response range bytes are not as expected or this channel has // been externally canceled. // // It's legal to bypass CallOnStartRequest for that case since we've // already called OnStartRequest on our listener and also added all // content converters before. MOZ_ASSERT(mConcurrentCacheAccess); LOG(("CallOnStartRequest already invoked before")); return mStatus; } // Ensure mListener->OnStartRequest will be invoked before exiting // this function. auto onStartGuard = MakeScopeExit([&] { LOG( (" calling mListener->OnStartRequest by ScopeExit [this=%p, " "listener=%p]\n", this, mListener.get())); MOZ_ASSERT(!mOnStartRequestCalled); if (mListener) { nsCOMPtr deleteProtector(mListener); mOnStartRequestCalled = true; deleteProtector->OnStartRequest(this); } mOnStartRequestCalled = true; }); nsresult rv = ValidateMIMEType(); // Since ODA and OnStopRequest could be sent from socket process directly, we // need to update the channel status before calling mListener->OnStartRequest. // This is the only way to let child process discard the already received ODA // messages. if (NS_FAILED(rv)) { mStatus = rv; return mStatus; } // Allow consumers to override our content type if (mLoadFlags & LOAD_CALL_CONTENT_SNIFFERS) { // NOTE: We can have both a txn pump and a cache pump when the cache // content is partial. In that case, we need to read from the cache, // because that's the one that has the initial contents. If that fails // then give the transaction pump a shot. nsIChannel* thisChannel = static_cast(this); bool typeSniffersCalled = false; if (mCachePump) { typeSniffersCalled = NS_SUCCEEDED(mCachePump->PeekStream(CallTypeSniffers, thisChannel)); } if (!typeSniffersCalled && mTransactionPump) { RefPtr pump = do_QueryObject(mTransactionPump); if (pump) { pump->PeekStream(CallTypeSniffers, thisChannel); } else { MOZ_ASSERT(nsIOService::UseSocketProcess()); RefPtr trans = do_QueryObject(mTransactionPump); MOZ_ASSERT(trans); trans->SetSniffedTypeToChannel(CallTypeSniffers, thisChannel); } } } // Note that the code below should be synced with the code in // HttpTransactionChild::CanSendODAToContentProcessDirectly(). We MUST make // sure HttpTransactionChild::CanSendODAToContentProcessDirectly() returns // false when a stream converter is applied. bool unknownDecoderStarted = false; if (mResponseHead && !mResponseHead->HasContentType()) { MOZ_ASSERT(mConnectionInfo, "Should have connection info here"); if (!mContentTypeHint.IsEmpty()) mResponseHead->SetContentType(mContentTypeHint); else if (mResponseHead->Version() == HttpVersion::v0_9 && mConnectionInfo->OriginPort() != mConnectionInfo->DefaultPort()) mResponseHead->SetContentType(nsLiteralCString(TEXT_PLAIN)); else { // Uh-oh. We had better find out what type we are! nsCOMPtr serv; rv = gHttpHandler->GetStreamConverterService(getter_AddRefs(serv)); // If we failed, we just fall through to the "normal" case if (NS_SUCCEEDED(rv)) { nsCOMPtr converter; rv = serv->AsyncConvertData(UNKNOWN_CONTENT_TYPE, "*/*", mListener, nullptr, getter_AddRefs(converter)); if (NS_SUCCEEDED(rv)) { mListener = converter; unknownDecoderStarted = true; } } } } // If the content is multipart/x-mixed-replace, we'll insert a MIME decoder // in the pipeline to handle the content and pass it along to our // original listener. nsUnknownDecoder doesn't support detecting this type, // so we only need to insert this using the response header's mime type. // We only do this for document loads, since we might want to send parts // to the external protocol handler without leaving the parent process. bool mustRunStreamFilterInParent = false; nsCOMPtr parentChannel; NS_QueryNotificationCallbacks(this, parentChannel); RefPtr docListener = do_QueryObject(parentChannel); if (mResponseHead && docListener) { nsAutoCString contentType; mResponseHead->ContentType(contentType); if (contentType.Equals("multipart/x-mixed-replace"_ns)) { nsCOMPtr convServ( do_GetService("@mozilla.org/streamConverters;1", &rv)); if (NS_SUCCEEDED(rv)) { nsCOMPtr toListener(mListener); nsCOMPtr fromListener; rv = convServ->AsyncConvertData("multipart/x-mixed-replace", "*/*", toListener, nullptr, getter_AddRefs(fromListener)); if (NS_SUCCEEDED(rv)) { mListener = fromListener; mustRunStreamFilterInParent = true; } } } } // If we installed a multipart converter, then we need to add StreamFilter // object before it, so that extensions see the un-parsed original stream. // We may want to add an option for extensions to opt-in to proper multipart // handling. // If not, then pass the StreamFilter promise on to DocumentLoadListener, // where it'll be added in the content process. for (StreamFilterRequest& request : mStreamFilterRequests) { if (mustRunStreamFilterInParent) { mozilla::ipc::Endpoint parent; mozilla::ipc::Endpoint child; nsresult rv = extensions::PStreamFilter::CreateEndpoints( base::GetCurrentProcId(), request.mChildProcessId, &parent, &child); if (NS_FAILED(rv)) { request.mPromise->Reject(false, __func__); } else { extensions::StreamFilterParent::Attach(this, std::move(parent)); request.mPromise->Resolve(std::move(child), __func__); } } else { docListener->AttachStreamFilter(request.mChildProcessId) ->ChainTo(request.mPromise.forget(), __func__); } request.mPromise = nullptr; } mStreamFilterRequests.Clear(); mTracingEnabled = false; if (mResponseHead && !mResponseHead->HasContentCharset()) mResponseHead->SetContentCharset(mContentCharsetHint); if (mCacheEntry && mCacheEntryIsWriteOnly) { SetCachedContentType(); } LOG((" calling mListener->OnStartRequest [this=%p, listener=%p]\n", this, mListener.get())); // About to call OnStartRequest, dismiss the guard object. onStartGuard.release(); if (mListener) { MOZ_ASSERT(!mOnStartRequestCalled, "We should not call OsStartRequest twice"); nsCOMPtr deleteProtector(mListener); mOnStartRequestCalled = true; rv = deleteProtector->OnStartRequest(this); if (NS_FAILED(rv)) return rv; } else { NS_WARNING("OnStartRequest skipped because of null listener"); mOnStartRequestCalled = true; } // Install stream converter if required. // Normally, we expect the listener to disable content conversion during // OnStartRequest if it wants to handle it itself (which is common case with // HttpChannelParent, disabling so that it can be done in the content // process). If we've installed an nsUnknownDecoder, then we won't yet have // called OnStartRequest on the final listener (that happens after we send // OnDataAvailable to the nsUnknownDecoder), so it can't yet have disabled // content conversion. // In that case, assume that the listener will disable content conversion, // unless it's specifically told us that it won't. if (!unknownDecoderStarted || mListenerRequiresContentConversion) { nsCOMPtr listener; rv = DoApplyContentConversions(mListener, getter_AddRefs(listener), nullptr); if (NS_FAILED(rv)) { return rv; } if (listener) { MOZ_ASSERT(!mDataSentToChildProcess, "mDataSentToChildProcess being true means ODAs are sent to " "the child process directly. We MUST NOT apply content " "converter in this case."); mListener = listener; mCompressListener = listener; mHasAppliedConversion = true; } } // if this channel is for a download, close off access to the cache. if (mCacheEntry && mChannelIsForDownload) { mCacheEntry->AsyncDoom(nullptr); // We must keep the cache entry in case of partial request. // Concurrent access is the same, we need the entry in // OnStopRequest. // We also need the cache entry when racing cache with network to find // out what is the source of the data. if (!mCachedContentIsPartial && !mConcurrentCacheAccess && !(mRaceCacheWithNetwork && mFirstResponseSource == RESPONSE_FROM_CACHE)) { CloseCacheEntry(false); } } if (!mCanceled) { // create offline cache entry if offline caching was requested if (ShouldUpdateOfflineCacheEntry()) { LOG(("writing to the offline cache")); rv = InitOfflineCacheEntry(); if (NS_FAILED(rv)) return rv; // InitOfflineCacheEntry may have closed mOfflineCacheEntry if (mOfflineCacheEntry) { rv = InstallOfflineCacheListener(); if (NS_FAILED(rv)) return rv; } } else if (mApplicationCacheForWrite) { LOG(("offline cache is up to date, not updating")); CloseOfflineCacheEntry(); } } return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetHttpProxyConnectResponseCode( int32_t* aResponseCode) { NS_ENSURE_ARG_POINTER(aResponseCode); if (mConnectionInfo && mConnectionInfo->UsingConnect()) { *aResponseCode = mProxyConnectResponseCode; } else { *aResponseCode = -1; } return NS_OK; } nsresult nsHttpChannel::ProcessFailedProxyConnect(uint32_t httpStatus) { // Failure to set up a proxy tunnel via CONNECT means one of the following: // 1) Proxy wants authorization, or forbids. // 2) DNS at proxy couldn't resolve target URL. // 3) Proxy connection to target failed or timed out. // 4) Eve intercepted our CONNECT, and is replying with malicious HTML. // // Our current architecture would parse the proxy's response content with // the permission of the target URL. Given #4, we must avoid rendering the // body of the reply, and instead give the user a (hopefully helpful) // boilerplate error page, based on just the HTTP status of the reply. MOZ_ASSERT(mConnectionInfo->UsingConnect(), "proxy connect failed but not using CONNECT?"); nsresult rv = HttpProxyResponseToErrorCode(httpStatus); LOG(("Cancelling failed proxy CONNECT [this=%p httpStatus=%u]\n", this, httpStatus)); // Make sure the connection is thrown away as it can be in a bad state // and the proxy may just hang on the next request. MOZ_ASSERT(mTransaction); mTransaction->DontReuseConnection(); Cancel(rv); { nsresult rv = CallOnStartRequest(); if (NS_FAILED(rv)) { LOG(("CallOnStartRequest failed [this=%p httpStatus=%u rv=%08x]\n", this, httpStatus, static_cast(rv))); } } return rv; } static void GetSTSConsoleErrorTag(uint32_t failureResult, nsAString& consoleErrorTag) { switch (failureResult) { case nsISiteSecurityService::ERROR_UNTRUSTWORTHY_CONNECTION: consoleErrorTag = u"STSUntrustworthyConnection"_ns; break; case nsISiteSecurityService::ERROR_COULD_NOT_PARSE_HEADER: consoleErrorTag = u"STSCouldNotParseHeader"_ns; break; case nsISiteSecurityService::ERROR_NO_MAX_AGE: consoleErrorTag = u"STSNoMaxAge"_ns; break; case nsISiteSecurityService::ERROR_MULTIPLE_MAX_AGES: consoleErrorTag = u"STSMultipleMaxAges"_ns; break; case nsISiteSecurityService::ERROR_INVALID_MAX_AGE: consoleErrorTag = u"STSInvalidMaxAge"_ns; break; case nsISiteSecurityService::ERROR_MULTIPLE_INCLUDE_SUBDOMAINS: consoleErrorTag = u"STSMultipleIncludeSubdomains"_ns; break; case nsISiteSecurityService::ERROR_INVALID_INCLUDE_SUBDOMAINS: consoleErrorTag = u"STSInvalidIncludeSubdomains"_ns; break; case nsISiteSecurityService::ERROR_COULD_NOT_SAVE_STATE: consoleErrorTag = u"STSCouldNotSaveState"_ns; break; default: consoleErrorTag = u"STSUnknownError"_ns; break; } } /** * Process a single security header. Only one type is supported: HSTS */ nsresult nsHttpChannel::ProcessSingleSecurityHeader( uint32_t aType, nsITransportSecurityInfo* aSecInfo, uint32_t aFlags) { nsHttpAtom atom; switch (aType) { case nsISiteSecurityService::HEADER_HSTS: atom = nsHttp::ResolveAtom("Strict-Transport-Security"); break; default: MOZ_ASSERT_UNREACHABLE("Invalid security header type"); return NS_ERROR_FAILURE; } nsAutoCString securityHeader; nsresult rv = mResponseHead->GetHeader(atom, securityHeader); if (NS_SUCCEEDED(rv)) { nsISiteSecurityService* sss = gHttpHandler->GetSSService(); NS_ENSURE_TRUE(sss, NS_ERROR_OUT_OF_MEMORY); // Process header will now discard the headers itself if the channel // wasn't secure (whereas before it had to be checked manually) OriginAttributes originAttributes; if (NS_WARN_IF(!StoragePrincipalHelper::GetOriginAttributesForHSTS( this, originAttributes))) { return NS_ERROR_FAILURE; } uint32_t failureResult; uint32_t headerSource = nsISiteSecurityService::SOURCE_ORGANIC_REQUEST; rv = sss->ProcessHeader(aType, mURI, securityHeader, aSecInfo, aFlags, headerSource, originAttributes, nullptr, nullptr, &failureResult); if (NS_FAILED(rv)) { nsAutoString consoleErrorCategory; nsAutoString consoleErrorTag; switch (aType) { case nsISiteSecurityService::HEADER_HSTS: GetSTSConsoleErrorTag(failureResult, consoleErrorTag); consoleErrorCategory = u"Invalid HSTS Headers"_ns; break; default: return NS_ERROR_FAILURE; } Unused << AddSecurityMessage(consoleErrorTag, consoleErrorCategory); LOG(("nsHttpChannel: Failed to parse %s header, continuing load.\n", atom.get())); } } else { if (rv != NS_ERROR_NOT_AVAILABLE) { // All other errors are fatal NS_ENSURE_SUCCESS(rv, rv); } LOG(("nsHttpChannel: No %s header, continuing load.\n", atom.get())); } return NS_OK; } /** * Decide whether or not to remember Strict-Transport-Security, and whether * or not to enforce channel integrity. * * @return NS_ERROR_FAILURE if there's security information missing even though * it's an HTTPS connection. */ nsresult nsHttpChannel::ProcessSecurityHeaders() { // If this channel is not loading securely, STS or PKP doesn't do anything. // In the case of HSTS, the upgrade to HTTPS takes place earlier in the // channel load process. if (!mURI->SchemeIs("https")) { return NS_OK; } if (IsBrowsingContextDiscarded()) { return NS_OK; } nsAutoCString asciiHost; nsresult rv = mURI->GetAsciiHost(asciiHost); NS_ENSURE_SUCCESS(rv, NS_OK); // If the channel is not a hostname, but rather an IP, do not process STS // or PKP headers PRNetAddr hostAddr; if (PR_SUCCESS == PR_StringToNetAddr(asciiHost.get(), &hostAddr)) return NS_OK; // mSecurityInfo may not always be present, and if it's not then it is okay // to just disregard any security headers since we know nothing about the // security of the connection. NS_ENSURE_TRUE(mSecurityInfo, NS_OK); uint32_t flags = NS_UsePrivateBrowsing(this) ? nsISocketProvider::NO_PERMANENT_STORAGE : 0; // Get the TransportSecurityInfo nsCOMPtr transSecInfo = do_QueryInterface(mSecurityInfo); NS_ENSURE_TRUE(transSecInfo, NS_ERROR_FAILURE); rv = ProcessSingleSecurityHeader(nsISiteSecurityService::HEADER_HSTS, transSecInfo, flags); NS_ENSURE_SUCCESS(rv, rv); return NS_OK; } /** * Decide whether or not to send a security report and, if so, give the * SecurityReporter the information required to send such a report. */ void nsHttpChannel::ProcessSecurityReport(nsresult status) { uint32_t errorClass; nsCOMPtr errSvc = do_GetService("@mozilla.org/nss_errors_service;1"); // getErrorClass will throw a generic NS_ERROR_FAILURE if the error code is // not in the set of errors covered by the NSS errors service. nsresult rv = errSvc->GetErrorClass(status, &errorClass); if (!NS_SUCCEEDED(rv)) { return; } // if the content was not loaded succesfully and we have security info, // send a TLS error report - we must do this early as other parts of // OnStopRequest can return early bool reportingEnabled = Preferences::GetBool("security.ssl.errorReporting.enabled"); bool reportingAutomatic = Preferences::GetBool("security.ssl.errorReporting.automatic"); if (!mSecurityInfo || !reportingEnabled || !reportingAutomatic) { return; } nsCOMPtr secInfo = do_QueryInterface(mSecurityInfo); nsCOMPtr errorReporter = do_GetService("@mozilla.org/securityreporter;1"); if (!secInfo || !mURI) { return; } nsAutoCString hostStr; int32_t port; rv = mURI->GetHost(hostStr); if (!NS_SUCCEEDED(rv)) { return; } rv = mURI->GetPort(&port); if (NS_SUCCEEDED(rv)) { errorReporter->ReportTLSError(secInfo, hostStr, port); } } bool nsHttpChannel::IsHTTPS() { return mURI->SchemeIs("https"); } void nsHttpChannel::ProcessSSLInformation() { // If this is HTTPS, record any use of RSA so that Key Exchange Algorithm // can be whitelisted for TLS False Start in future sessions. We could // do the same for DH but its rarity doesn't justify the lookup. if (mCanceled || NS_FAILED(mStatus) || !mSecurityInfo || !IsHTTPS() || mPrivateBrowsing) return; nsCOMPtr securityInfo = do_QueryInterface(mSecurityInfo); if (!securityInfo) return; uint32_t state; if (securityInfo && NS_SUCCEEDED(securityInfo->GetSecurityState(&state)) && (state & nsIWebProgressListener::STATE_IS_BROKEN)) { // Send weak crypto warnings to the web console if (state & nsIWebProgressListener::STATE_USES_WEAK_CRYPTO) { nsString consoleErrorTag = u"WeakCipherSuiteWarning"_ns; nsString consoleErrorCategory = u"SSL"_ns; Unused << AddSecurityMessage(consoleErrorTag, consoleErrorCategory); } } // Send (SHA-1) signature algorithm errors to the web console nsCOMPtr cert; securityInfo->GetServerCert(getter_AddRefs(cert)); if (cert) { UniqueCERTCertificate nssCert(cert->GetCert()); if (nssCert) { SECOidTag tag = SECOID_GetAlgorithmTag(&nssCert->signature); LOG(("Checking certificate signature: The OID tag is %i [this=%p]\n", tag, this)); // Check to see if the signature is sha-1 based. // Not including checks for SEC_OID_ISO_SHA1_WITH_RSA_SIGNATURE // from http://tools.ietf.org/html/rfc2437#section-8 since I // can't see reference to it outside this spec if (tag == SEC_OID_PKCS1_SHA1_WITH_RSA_ENCRYPTION || tag == SEC_OID_ANSIX9_DSA_SIGNATURE_WITH_SHA1_DIGEST || tag == SEC_OID_ANSIX962_ECDSA_SHA1_SIGNATURE) { nsString consoleErrorTag = u"SHA1Sig"_ns; nsString consoleErrorMessage = u"SHA-1 Signature"_ns; Unused << AddSecurityMessage(consoleErrorTag, consoleErrorMessage); } } } uint16_t tlsVersion; nsresult rv = securityInfo->GetProtocolVersion(&tlsVersion); if (NS_SUCCEEDED(rv) && tlsVersion != nsITransportSecurityInfo::TLS_VERSION_1_2 && tlsVersion != nsITransportSecurityInfo::TLS_VERSION_1_3) { nsString consoleErrorTag = u"DeprecatedTLSVersion2"_ns; nsString consoleErrorCategory = u"TLS"_ns; Unused << AddSecurityMessage(consoleErrorTag, consoleErrorCategory); } } void nsHttpChannel::ProcessAltService() { // e.g. Alt-Svc: h2=":443"; ma=60 // e.g. Alt-Svc: h2="otherhost:443" // Alt-Svc = 1#( alternative *( OWS ";" OWS parameter ) ) // alternative = protocol-id "=" alt-authority // protocol-id = token ; percent-encoded ALPN protocol identifier // alt-authority = quoted-string ; containing [ uri-host ] ":" port if (!mAllowAltSvc) { // per channel opt out return; } if (!gHttpHandler->AllowAltSvc() || (mCaps & NS_HTTP_DISALLOW_SPDY)) { return; } if (IsBrowsingContextDiscarded()) { return; } nsAutoCString scheme; mURI->GetScheme(scheme); bool isHttp = scheme.EqualsLiteral("http"); if (!isHttp && !scheme.EqualsLiteral("https")) { return; } nsAutoCString altSvc; Unused << mResponseHead->GetHeader(nsHttp::Alternate_Service, altSvc); if (altSvc.IsEmpty()) { return; } if (!nsHttp::IsReasonableHeaderValue(altSvc)) { LOG(("Alt-Svc Response Header seems unreasonable - skipping\n")); return; } nsAutoCString originHost; int32_t originPort = 80; mURI->GetPort(&originPort); if (NS_FAILED(mURI->GetAsciiHost(originHost))) { return; } nsCOMPtr callbacks; nsCOMPtr proxyInfo; NS_NewNotificationCallbacksAggregation(mCallbacks, mLoadGroup, getter_AddRefs(callbacks)); if (mProxyInfo) { proxyInfo = do_QueryInterface(mProxyInfo); } OriginAttributes originAttributes; // Regular principal in case we have a proxy. if (proxyInfo && !StaticPrefs::privacy_partition_network_state_connection_with_proxy()) { StoragePrincipalHelper::GetOriginAttributes( this, originAttributes, StoragePrincipalHelper::eRegularPrincipal); } else { StoragePrincipalHelper::GetOriginAttributesForNetworkState( this, originAttributes); } AltSvcMapping::ProcessHeader( altSvc, scheme, originHost, originPort, mUsername, GetTopWindowOrigin(), mPrivateBrowsing, IsIsolated(), callbacks, proxyInfo, mCaps & NS_HTTP_DISALLOW_SPDY, originAttributes); } nsresult nsHttpChannel::ProcessResponse() { uint32_t httpStatus = mResponseHead->Status(); LOG(("nsHttpChannel::ProcessResponse [this=%p httpStatus=%u]\n", this, httpStatus)); // Gather data on whether the transaction and page (if this is // the initial page load) is being loaded with SSL. Telemetry::Accumulate(Telemetry::HTTP_TRANSACTION_IS_SSL, mConnectionInfo->EndToEndSSL()); if (mLoadFlags & LOAD_INITIAL_DOCUMENT_URI) { Telemetry::Accumulate(Telemetry::HTTP_PAGELOAD_IS_SSL, mConnectionInfo->EndToEndSSL()); } if (Telemetry::CanRecordPrereleaseData()) { // how often do we see something like Alt-Svc: "443:quic,p=1" // and Alt-Svc: "h3-****" nsAutoCString alt_service; Unused << mResponseHead->GetHeader(nsHttp::Alternate_Service, alt_service); uint32_t saw_quic = 0; if (!alt_service.IsEmpty()) { if (PL_strstr(alt_service.get(), "h3-")) { saw_quic = 1; } else if (PL_strstr(alt_service.get(), "quic")) { saw_quic = 2; } } Telemetry::Accumulate(Telemetry::HTTP_SAW_QUIC_ALT_PROTOCOL_2, saw_quic); // Gather data on how many URLS get redirected switch (httpStatus) { case 200: Telemetry::Accumulate(Telemetry::HTTP_RESPONSE_STATUS_CODE, 0); break; case 301: Telemetry::Accumulate(Telemetry::HTTP_RESPONSE_STATUS_CODE, 1); break; case 302: Telemetry::Accumulate(Telemetry::HTTP_RESPONSE_STATUS_CODE, 2); break; case 304: Telemetry::Accumulate(Telemetry::HTTP_RESPONSE_STATUS_CODE, 3); break; case 307: Telemetry::Accumulate(Telemetry::HTTP_RESPONSE_STATUS_CODE, 4); break; case 308: Telemetry::Accumulate(Telemetry::HTTP_RESPONSE_STATUS_CODE, 5); break; case 400: Telemetry::Accumulate(Telemetry::HTTP_RESPONSE_STATUS_CODE, 6); break; case 401: Telemetry::Accumulate(Telemetry::HTTP_RESPONSE_STATUS_CODE, 7); break; case 403: Telemetry::Accumulate(Telemetry::HTTP_RESPONSE_STATUS_CODE, 8); break; case 404: Telemetry::Accumulate(Telemetry::HTTP_RESPONSE_STATUS_CODE, 9); break; case 500: Telemetry::Accumulate(Telemetry::HTTP_RESPONSE_STATUS_CODE, 10); break; default: Telemetry::Accumulate(Telemetry::HTTP_RESPONSE_STATUS_CODE, 11); break; } } // Let the predictor know whether this was a cacheable response or not so // that it knows whether or not to possibly prefetch this resource in the // future. // We use GetReferringPage because mReferrerInfo may not be set at all(this is // especially useful in xpcshell tests, where we don't have an actual pageload // to get a referrer from). nsCOMPtr referrer = GetReferringPage(); if (!referrer && mReferrerInfo) { referrer = mReferrerInfo->GetOriginalReferrer(); } if (referrer) { nsCOMPtr lci = GetLoadContextInfo(this); mozilla::net::Predictor::UpdateCacheability( referrer, mURI, httpStatus, mRequestHead, mResponseHead.get(), lci, IsThirdPartyTrackingResource()); } // Only allow 407 (authentication required) to continue if (mTransaction && mTransaction->ProxyConnectFailed() && httpStatus != 407) { return ProcessFailedProxyConnect(httpStatus); } MOZ_ASSERT(!mCachedContentIsValid || mRaceCacheWithNetwork, "We should not be hitting the network if we have valid cached " "content unless we are racing the network and cache"); ProcessSSLInformation(); // notify "http-on-examine-response" observers gHttpHandler->OnExamineResponse(this); return ContinueProcessResponse1(); } void nsHttpChannel::AsyncContinueProcessResponse() { nsresult rv; rv = ContinueProcessResponse1(); if (NS_FAILED(rv)) { // A synchronous failure here would normally be passed as the return // value from OnStartRequest, which would in turn cancel the request. // If we're continuing asynchronously, we need to cancel the request // ourselves. Unused << Cancel(rv); } } nsresult nsHttpChannel::ContinueProcessResponse1() { MOZ_ASSERT(!mCallOnResume, "How did that happen?"); nsresult rv; if (mSuspendCount) { LOG(("Waiting until resume to finish processing response [this=%p]\n", this)); mCallOnResume = [](nsHttpChannel* self) { self->AsyncContinueProcessResponse(); return NS_OK; }; return NS_OK; } rv = ProcessCrossOriginResourcePolicyHeader(); if (NS_FAILED(rv)) { mStatus = NS_ERROR_DOM_CORP_FAILED; HandleAsyncAbort(); return NS_OK; } rv = ComputeCrossOriginOpenerPolicyMismatch(); if (rv == NS_ERROR_BLOCKED_BY_POLICY) { // this navigates the doc's browsing context to a network error. mStatus = NS_ERROR_BLOCKED_BY_POLICY; HandleAsyncAbort(); return NS_OK; } // Check if request was cancelled during http-on-examine-response. if (mCanceled) { return CallOnStartRequest(); } uint32_t httpStatus = mResponseHead->Status(); // STS, Cookies and Alt-Service should not be handled on proxy failure. // If proxy CONNECT response needs to complete, wait to process connection // for Strict-Transport-Security. if (!(mTransaction && mTransaction->ProxyConnectFailed()) && (httpStatus != 407)) { if (nsAutoCString cookie; NS_SUCCEEDED(mResponseHead->GetHeader(nsHttp::Set_Cookie, cookie))) { SetCookie(cookie); nsCOMPtr parentChannel; NS_QueryNotificationCallbacks(this, parentChannel); if (RefPtr httpParent = do_QueryObject(parentChannel)) { httpParent->SetCookie(std::move(cookie)); } } // Given a successful connection, process any STS or PKP data that's // relevant. DebugOnly rv = ProcessSecurityHeaders(); MOZ_ASSERT(NS_SUCCEEDED(rv), "ProcessSTSHeader failed, continuing load."); if ((httpStatus < 500) && (httpStatus != 421)) { ProcessAltService(); } } if (mConcurrentCacheAccess && mCachedContentIsPartial && httpStatus != 206) { LOG( (" only expecting 206 when doing partial request during " "interrupted cache concurrent read")); return NS_ERROR_CORRUPTED_CONTENT; } // handle unused username and password in url (see bug 232567) if (httpStatus != 401 && httpStatus != 407) { if (!mAuthRetryPending) { rv = mAuthProvider->CheckForSuperfluousAuth(); if (NS_FAILED(rv)) { LOG((" CheckForSuperfluousAuth failed (%08x)", static_cast(rv))); } } if (mCanceled) return CallOnStartRequest(); // reset the authentication's current continuation state because ourvr // last authentication attempt has been completed successfully rv = mAuthProvider->Disconnect(NS_ERROR_ABORT); if (NS_FAILED(rv)) { LOG((" Disconnect failed (%08x)", static_cast(rv))); } mAuthProvider = nullptr; LOG((" continuation state has been reset")); } rv = ProcessCrossOriginEmbedderPolicyHeader(); if (NS_FAILED(rv)) { mStatus = NS_ERROR_BLOCKED_BY_POLICY; HandleAsyncAbort(); return NS_OK; } // No process switch needed, continue as normal. return ContinueProcessResponse2(rv); } nsresult nsHttpChannel::ContinueProcessResponse2(nsresult rv) { if (NS_FAILED(rv) && !mCanceled) { // The process switch failed, cancel this channel. Cancel(rv); return CallOnStartRequest(); } if (mAPIRedirectToURI && !mCanceled) { MOZ_ASSERT(!mOnStartRequestCalled); nsCOMPtr redirectTo; mAPIRedirectToURI.swap(redirectTo); PushRedirectAsyncFunc(&nsHttpChannel::ContinueProcessResponse3); rv = StartRedirectChannelToURI(redirectTo, nsIChannelEventSink::REDIRECT_TEMPORARY); if (NS_SUCCEEDED(rv)) { return NS_OK; } PopRedirectAsyncFunc(&nsHttpChannel::ContinueProcessResponse3); } // Hack: ContinueProcessResponse3 uses NS_OK to detect successful // redirects, so we distinguish this codepath (a non-redirect that's // processing normally) by passing in a bogus error code. return ContinueProcessResponse3(NS_BINDING_FAILED); } nsresult nsHttpChannel::ContinueProcessResponse3(nsresult rv) { LOG(("nsHttpChannel::ContinueProcessResponse3 [this=%p, rv=%" PRIx32 "]", this, static_cast(rv))); if (NS_SUCCEEDED(rv)) { // redirectTo() has passed through, we don't want to go on with // this channel. It will now be canceled by the redirect handling // code that called this function. return NS_OK; } rv = NS_OK; uint32_t httpStatus = mResponseHead->Status(); bool transactionRestarted = mTransaction->TakeRestartedState(); // handle different server response categories. Note that we handle // caching or not caching of error pages in // nsHttpResponseHead::MustValidate; if you change this switch, update that // one switch (httpStatus) { case 200: case 203: // Per RFC 2616, 14.35.2, "A server MAY ignore the Range header". // So if a server does that and sends 200 instead of 206 that we // expect, notify our caller. // However, if we wanted to start from the beginning, let it go through if (mResuming && mStartPos != 0) { LOG(("Server ignored our Range header, cancelling [this=%p]\n", this)); Cancel(NS_ERROR_NOT_RESUMABLE); rv = CallOnStartRequest(); break; } // these can normally be cached rv = ProcessNormal(); MaybeInvalidateCacheEntryForSubsequentGet(); break; case 206: if (mCachedContentIsPartial) { // an internal byte range request... auto func = [](auto* self, nsresult aRv) { return self->ContinueProcessResponseAfterPartialContent(aRv); }; rv = ProcessPartialContent(func); // Directly call ContinueProcessResponseAfterPartialContent if channel // is not suspended or ProcessPartialContent throws. if (!mSuspendCount || NS_FAILED(rv)) { return ContinueProcessResponseAfterPartialContent(rv); } return NS_OK; } else { mCacheInputStream.CloseAndRelease(); rv = ProcessNormal(); } break; case 300: case 301: case 302: case 307: case 308: case 303: #if 0 case 305: // disabled as a security measure (see bug 187996). #endif // don't store the response body for redirects MaybeInvalidateCacheEntryForSubsequentGet(); PushRedirectAsyncFunc(&nsHttpChannel::ContinueProcessResponse4); rv = AsyncProcessRedirection(httpStatus); if (NS_FAILED(rv)) { PopRedirectAsyncFunc(&nsHttpChannel::ContinueProcessResponse4); LOG(("AsyncProcessRedirection failed [rv=%" PRIx32 "]\n", static_cast(rv))); // don't cache failed redirect responses. if (mCacheEntry) mCacheEntry->AsyncDoom(nullptr); if (DoNotRender3xxBody(rv)) { mStatus = rv; DoNotifyListener(); } else { rv = ContinueProcessResponse4(rv); } } break; case 304: if (!ShouldBypassProcessNotModified()) { auto func = [](auto* self, nsresult aRv) { return self->ContinueProcessResponseAfterNotModified(aRv); }; rv = ProcessNotModified(func); // Directly call ContinueProcessResponseAfterNotModified if channel // is not suspended or ProcessNotModified throws. if (!mSuspendCount || NS_FAILED(rv)) { return ContinueProcessResponseAfterNotModified(rv); } return NS_OK; } // Don't cache uninformative 304 if (mCustomConditionalRequest) { CloseCacheEntry(false); } if (ShouldBypassProcessNotModified() || NS_FAILED(rv)) { rv = ProcessNormal(); } break; case 401: case 407: if (MOZ_UNLIKELY(httpStatus == 407 && transactionRestarted)) { // The transaction has been internally restarted. We want to // authenticate to the proxy again, so reuse either cached credentials // or use default credentials for NTLM/Negotiate. This prevents // considering the previously used creadentials as invalid. mAuthProvider->ClearProxyIdent(); } if (MOZ_UNLIKELY(mCustomAuthHeader) && httpStatus == 401) { // When a custom auth header fails, we don't want to try // any cached credentials, nor we want to ask the user. // It's up to the consumer to re-try w/o setting a custom // auth header if cached credentials should be attempted. rv = NS_ERROR_FAILURE; } else { rv = mAuthProvider->ProcessAuthentication( httpStatus, mConnectionInfo->EndToEndSSL() && mTransaction && mTransaction->ProxyConnectFailed()); } if (rv == NS_ERROR_IN_PROGRESS) { // authentication prompt has been invoked and result // is expected asynchronously mIsAuthChannel = true; mAuthRetryPending = true; if (httpStatus == 407 || (mTransaction && mTransaction->ProxyConnectFailed())) mProxyAuthPending = true; // suspend the transaction pump to stop receiving the // unauthenticated content data. We will throw that data // away when user provides credentials or resume the pump // when user refuses to authenticate. LOG( ("Suspending the transaction, asynchronously prompting for " "credentials")); mTransactionPump->Suspend(); rv = NS_OK; } else if (NS_FAILED(rv)) { LOG(("ProcessAuthentication failed [rv=%" PRIx32 "]\n", static_cast(rv))); if (mTransaction && mTransaction->ProxyConnectFailed()) { return ProcessFailedProxyConnect(httpStatus); } if (!mAuthRetryPending) { rv = mAuthProvider->CheckForSuperfluousAuth(); if (NS_FAILED(rv)) { LOG(("CheckForSuperfluousAuth failed [rv=%x]\n", static_cast(rv))); } } rv = ProcessNormal(); } else { mIsAuthChannel = true; mAuthRetryPending = true; // see DoAuthRetry } break; case 425: case 429: // Do not cache 425 and 429. CloseCacheEntry(false); [[fallthrough]]; // process normally default: rv = ProcessNormal(); MaybeInvalidateCacheEntryForSubsequentGet(); break; } UpdateCacheDisposition(false, false); return rv; } nsresult nsHttpChannel::ContinueProcessResponseAfterPartialContent( nsresult aRv) { LOG( ("nsHttpChannel::ContinueProcessResponseAfterPartialContent " "[this=%p, rv=%" PRIx32 "]", this, static_cast(aRv))); UpdateCacheDisposition(false, NS_SUCCEEDED(aRv)); return aRv; } nsresult nsHttpChannel::ContinueProcessResponseAfterNotModified(nsresult aRv) { LOG( ("nsHttpChannel::ContinueProcessResponseAfterNotModified " "[this=%p, rv=%" PRIx32 "]", this, static_cast(aRv))); if (NS_SUCCEEDED(aRv)) { mTransactionReplaced = true; UpdateCacheDisposition(true, false); return NS_OK; } LOG(("ProcessNotModified failed [rv=%" PRIx32 "]\n", static_cast(aRv))); // We cannot read from the cache entry, it might be in an // incosistent state. Doom it and redirect the channel // to the same URI to reload from the network. mCacheInputStream.CloseAndRelease(); if (mCacheEntry) { mCacheEntry->AsyncDoom(nullptr); mCacheEntry = nullptr; } nsresult rv = StartRedirectChannelToURI(mURI, nsIChannelEventSink::REDIRECT_INTERNAL); if (NS_SUCCEEDED(rv)) { return NS_OK; } // Don't cache uninformative 304 if (mCustomConditionalRequest) { CloseCacheEntry(false); } if (ShouldBypassProcessNotModified() || NS_FAILED(rv)) { rv = ProcessNormal(); } UpdateCacheDisposition(false, false); return rv; } void nsHttpChannel::UpdateCacheDisposition(bool aSuccessfulReval, bool aPartialContentUsed) { if (mRaceDelay && !mRaceCacheWithNetwork && (mCachedContentIsPartial || mDidReval)) { if (aSuccessfulReval || aPartialContentUsed) { AccumulateCategorical( Telemetry::LABELS_NETWORK_RACE_CACHE_VALIDATION::CachedContentUsed); } else { AccumulateCategorical(Telemetry::LABELS_NETWORK_RACE_CACHE_VALIDATION:: CachedContentNotUsed); } } if (Telemetry::CanRecordPrereleaseData()) { CacheDisposition cacheDisposition; if (!mDidReval) { cacheDisposition = kCacheMissed; } else if (aSuccessfulReval) { cacheDisposition = kCacheHitViaReval; } else { cacheDisposition = kCacheMissedViaReval; } AccumulateCacheHitTelemetry(cacheDisposition, this); mCacheDisposition = cacheDisposition; Telemetry::Accumulate(Telemetry::HTTP_RESPONSE_VERSION, static_cast(mResponseHead->Version())); if (mResponseHead->Version() == HttpVersion::v0_9) { // DefaultPortTopLevel = 0, DefaultPortSubResource = 1, // NonDefaultPortTopLevel = 2, NonDefaultPortSubResource = 3 uint32_t v09Info = 0; if (!(mLoadFlags & LOAD_INITIAL_DOCUMENT_URI)) { v09Info += 1; } if (mConnectionInfo->OriginPort() != mConnectionInfo->DefaultPort()) { v09Info += 2; } Telemetry::Accumulate(Telemetry::HTTP_09_INFO, v09Info); } } } nsresult nsHttpChannel::ContinueProcessResponse4(nsresult rv) { bool doNotRender = DoNotRender3xxBody(rv); if (rv == NS_ERROR_DOM_BAD_URI && mRedirectURI) { bool isHTTP = mRedirectURI->SchemeIs("http") || mRedirectURI->SchemeIs("https"); if (!isHTTP) { // This was a blocked attempt to redirect and subvert the system by // redirecting to another protocol (perhaps javascript:) // In that case we want to throw an error instead of displaying the // non-redirected response body. LOG(("ContinueProcessResponse4 detected rejected Non-HTTP Redirection")); doNotRender = true; rv = NS_ERROR_CORRUPTED_CONTENT; } } if (doNotRender) { Cancel(rv); DoNotifyListener(); return rv; } if (NS_SUCCEEDED(rv)) { UpdateInhibitPersistentCachingFlag(); MaybeCreateCacheEntryWhenRCWN(); rv = InitCacheEntry(); if (NS_FAILED(rv)) { LOG( ("ContinueProcessResponse4 " "failed to init cache entry [rv=%x]\n", static_cast(rv))); } CloseCacheEntry(false); if (mApplicationCacheForWrite) { // Store response in the offline cache Unused << InitOfflineCacheEntry(); CloseOfflineCacheEntry(); } return NS_OK; } LOG(("ContinueProcessResponse4 got failure result [rv=%" PRIx32 "]\n", static_cast(rv))); if (mTransaction && mTransaction->ProxyConnectFailed()) { return ProcessFailedProxyConnect(mRedirectType); } return ProcessNormal(); } nsresult nsHttpChannel::ProcessNormal() { nsresult rv; LOG(("nsHttpChannel::ProcessNormal [this=%p]\n", this)); bool succeeded; rv = GetRequestSucceeded(&succeeded); if (NS_SUCCEEDED(rv) && !succeeded) { PushRedirectAsyncFunc(&nsHttpChannel::ContinueProcessNormal); bool waitingForRedirectCallback; Unused << ProcessFallback(&waitingForRedirectCallback); if (waitingForRedirectCallback) { // The transaction has been suspended by ProcessFallback. return NS_OK; } PopRedirectAsyncFunc(&nsHttpChannel::ContinueProcessNormal); } return ContinueProcessNormal(NS_OK); } nsresult nsHttpChannel::ContinueProcessNormal(nsresult rv) { LOG(("nsHttpChannel::ContinueProcessNormal [this=%p]", this)); if (NS_FAILED(rv)) { // Fill the failure status here, we have failed to fall back, thus we // have to report our status as failed. mStatus = rv; DoNotifyListener(); return rv; } if (mFallingBack) { // Do not continue with normal processing, fallback is in // progress now. return NS_OK; } // if we're here, then any byte-range requests failed to result in a partial // response. we must clear this flag to prevent BufferPartialContent from // being called inside our OnDataAvailable (see bug 136678). mCachedContentIsPartial = false; ClearBogusContentEncodingIfNeeded(); UpdateInhibitPersistentCachingFlag(); MaybeCreateCacheEntryWhenRCWN(); // this must be called before firing OnStartRequest, since http clients, // such as imagelib, expect our cache entry to already have the correct // expiration time (bug 87710). if (mCacheEntry) { rv = InitCacheEntry(); if (NS_FAILED(rv)) CloseCacheEntry(true); } // Check that the server sent us what we were asking for if (mResuming) { // Create an entity id from the response nsAutoCString id; rv = GetEntityID(id); if (NS_FAILED(rv)) { // If creating an entity id is not possible -> error Cancel(NS_ERROR_NOT_RESUMABLE); } else if (mResponseHead->Status() != 206 && mResponseHead->Status() != 200) { // Probably 404 Not Found, 412 Precondition Failed or // 416 Invalid Range -> error LOG(("Unexpected response status while resuming, aborting [this=%p]\n", this)); Cancel(NS_ERROR_ENTITY_CHANGED); } // If we were passed an entity id, verify it's equal to the server's else if (!mEntityID.IsEmpty()) { if (!mEntityID.Equals(id)) { LOG(("Entity mismatch, expected '%s', got '%s', aborting [this=%p]", mEntityID.get(), id.get(), this)); Cancel(NS_ERROR_ENTITY_CHANGED); } } } rv = CallOnStartRequest(); if (NS_FAILED(rv)) return rv; // install cache listener if we still have a cache entry open if (mCacheEntry && !mCacheEntryIsReadOnly) { rv = InstallCacheListener(); if (NS_FAILED(rv)) return rv; } return NS_OK; } nsresult nsHttpChannel::PromptTempRedirect() { if (!gHttpHandler->PromptTempRedirect()) { return NS_OK; } nsresult rv; nsCOMPtr bundleService = do_GetService(NS_STRINGBUNDLE_CONTRACTID, &rv); if (NS_FAILED(rv)) return rv; nsCOMPtr stringBundle; rv = bundleService->CreateBundle(NECKO_MSGS_URL, getter_AddRefs(stringBundle)); if (NS_FAILED(rv)) return rv; nsAutoString messageString; rv = stringBundle->GetStringFromName("RepostFormData", messageString); if (NS_SUCCEEDED(rv)) { bool repost = false; nsCOMPtr prompt; GetCallback(prompt); if (!prompt) return NS_ERROR_NO_INTERFACE; prompt->Confirm(nullptr, messageString.get(), &repost); if (!repost) return NS_ERROR_FAILURE; } return rv; } nsresult nsHttpChannel::ProxyFailover() { LOG(("nsHttpChannel::ProxyFailover [this=%p]\n", this)); nsresult rv; nsCOMPtr pps = do_GetService(NS_PROTOCOLPROXYSERVICE_CONTRACTID, &rv); if (NS_FAILED(rv)) return rv; nsCOMPtr pi; rv = pps->GetFailoverForProxy(mConnectionInfo->ProxyInfo(), mURI, mStatus, getter_AddRefs(pi)); if (NS_FAILED(rv)) return rv; // XXXbz so where does this codepath remove us from the loadgroup, // exactly? return AsyncDoReplaceWithProxy(pi); } void nsHttpChannel::SetHTTPSSVCRecord(nsIDNSHTTPSSVCRecord* aRecord) { LOG(("nsHttpChannel::SetHTTPSSVCRecord [this=%p]\n", this)); mHTTPSSVCRecord = aRecord; } void nsHttpChannel::HandleAsyncRedirectChannelToHttps() { MOZ_ASSERT(!mCallOnResume, "How did that happen?"); if (mSuspendCount) { LOG(("Waiting until resume to do async redirect to https [this=%p]\n", this)); mCallOnResume = [](nsHttpChannel* self) { self->HandleAsyncRedirectChannelToHttps(); return NS_OK; }; return; } nsresult rv = StartRedirectChannelToHttps(); if (NS_FAILED(rv)) { rv = ContinueAsyncRedirectChannelToURI(rv); if (NS_FAILED(rv)) { LOG(("ContinueAsyncRedirectChannelToURI failed (%08x) [this=%p]\n", static_cast(rv), this)); } } } nsresult nsHttpChannel::StartRedirectChannelToHttps() { LOG(("nsHttpChannel::HandleAsyncRedirectChannelToHttps() [STS]\n")); nsCOMPtr upgradedURI; nsresult rv = NS_GetSecureUpgradedURI(mURI, getter_AddRefs(upgradedURI)); NS_ENSURE_SUCCESS(rv, rv); return StartRedirectChannelToURI( upgradedURI, nsIChannelEventSink::REDIRECT_PERMANENT | nsIChannelEventSink::REDIRECT_STS_UPGRADE); } void nsHttpChannel::HandleAsyncAPIRedirect() { MOZ_ASSERT(!mCallOnResume, "How did that happen?"); MOZ_ASSERT(mAPIRedirectToURI, "How did that happen?"); if (mSuspendCount) { LOG(("Waiting until resume to do async API redirect [this=%p]\n", this)); mCallOnResume = [](nsHttpChannel* self) { self->HandleAsyncAPIRedirect(); return NS_OK; }; return; } nsresult rv = StartRedirectChannelToURI( mAPIRedirectToURI, nsIChannelEventSink::REDIRECT_PERMANENT); if (NS_FAILED(rv)) { rv = ContinueAsyncRedirectChannelToURI(rv); if (NS_FAILED(rv)) { LOG(("ContinueAsyncRedirectChannelToURI failed (%08x) [this=%p]\n", static_cast(rv), this)); } } } nsresult nsHttpChannel::StartRedirectChannelToURI(nsIURI* upgradedURI, uint32_t flags) { nsresult rv = NS_OK; LOG(("nsHttpChannel::StartRedirectChannelToURI()\n")); nsCOMPtr newChannel; nsCOMPtr redirectLoadInfo = CloneLoadInfoForRedirect(upgradedURI, flags); nsCOMPtr ioService; rv = gHttpHandler->GetIOService(getter_AddRefs(ioService)); NS_ENSURE_SUCCESS(rv, rv); rv = NS_NewChannelInternal(getter_AddRefs(newChannel), upgradedURI, redirectLoadInfo, nullptr, // PerformanceStorage nullptr, // aLoadGroup nullptr, // aCallbacks nsIRequest::LOAD_NORMAL, ioService); NS_ENSURE_SUCCESS(rv, rv); rv = SetupReplacementChannel(upgradedURI, newChannel, true, flags); NS_ENSURE_SUCCESS(rv, rv); if (mHTTPSSVCRecord) { RefPtr httpChan = do_QueryObject(newChannel); if (httpChan) { nsCOMPtr rec; mHTTPSSVCRecord.swap(rec); httpChan->SetHTTPSSVCRecord(rec); } } // Inform consumers about this fake redirect mRedirectChannel = newChannel; PushRedirectAsyncFunc(&nsHttpChannel::ContinueAsyncRedirectChannelToURI); rv = gHttpHandler->AsyncOnChannelRedirect(this, newChannel, flags); if (NS_SUCCEEDED(rv)) rv = WaitForRedirectCallback(); if (NS_FAILED(rv)) { AutoRedirectVetoNotifier notifier(this); /* Remove the async call to ContinueAsyncRedirectChannelToURI(). * It is called directly by our callers upon return (to clean up * the failed redirect). */ PopRedirectAsyncFunc(&nsHttpChannel::ContinueAsyncRedirectChannelToURI); } return rv; } nsresult nsHttpChannel::ContinueAsyncRedirectChannelToURI(nsresult rv) { LOG(("nsHttpChannel::ContinueAsyncRedirectChannelToURI [this=%p]", this)); // Since we handle mAPIRedirectToURI also after on-examine-response handler // rather drop it here to avoid any redirect loops, even just hypothetical. mAPIRedirectToURI = nullptr; if (NS_SUCCEEDED(rv)) { rv = OpenRedirectChannel(rv); } if (NS_FAILED(rv)) { // Cancel the channel here, the update to https had been vetoed // but from the security reasons we have to discard the whole channel // load. Cancel(rv); } if (mLoadGroup) { mLoadGroup->RemoveRequest(this, nullptr, mStatus); } if (NS_FAILED(rv) && !mCachePump && !mTransactionPump) { // We have to manually notify the listener because there is not any pump // that would call our OnStart/StopRequest after resume from waiting for // the redirect callback. DoNotifyListener(); } return rv; } nsresult nsHttpChannel::OpenRedirectChannel(nsresult rv) { AutoRedirectVetoNotifier notifier(this); // Make sure to do this after we received redirect veto answer, // i.e. after all sinks had been notified mRedirectChannel->SetOriginalURI(mOriginalURI); // open new channel rv = mRedirectChannel->AsyncOpen(mListener); NS_ENSURE_SUCCESS(rv, rv); mStatus = NS_BINDING_REDIRECTED; notifier.RedirectSucceeded(); ReleaseListeners(); return NS_OK; } nsresult nsHttpChannel::AsyncDoReplaceWithProxy(nsIProxyInfo* pi) { LOG(("nsHttpChannel::AsyncDoReplaceWithProxy [this=%p pi=%p]", this, pi)); nsresult rv; nsCOMPtr newChannel; rv = gHttpHandler->NewProxiedChannel(mURI, pi, mProxyResolveFlags, mProxyURI, mLoadInfo, getter_AddRefs(newChannel)); if (NS_FAILED(rv)) return rv; uint32_t flags = nsIChannelEventSink::REDIRECT_INTERNAL; rv = SetupReplacementChannel(mURI, newChannel, true, flags); if (NS_FAILED(rv)) return rv; // Inform consumers about this fake redirect mRedirectChannel = newChannel; PushRedirectAsyncFunc(&nsHttpChannel::ContinueDoReplaceWithProxy); rv = gHttpHandler->AsyncOnChannelRedirect(this, newChannel, flags); if (NS_SUCCEEDED(rv)) rv = WaitForRedirectCallback(); if (NS_FAILED(rv)) { AutoRedirectVetoNotifier notifier(this); PopRedirectAsyncFunc(&nsHttpChannel::ContinueDoReplaceWithProxy); } return rv; } nsresult nsHttpChannel::ContinueDoReplaceWithProxy(nsresult rv) { AutoRedirectVetoNotifier notifier(this); if (NS_FAILED(rv)) return rv; MOZ_ASSERT(mRedirectChannel, "No redirect channel?"); // Make sure to do this after we received redirect veto answer, // i.e. after all sinks had been notified mRedirectChannel->SetOriginalURI(mOriginalURI); // open new channel rv = mRedirectChannel->AsyncOpen(mListener); NS_ENSURE_SUCCESS(rv, rv); mStatus = NS_BINDING_REDIRECTED; notifier.RedirectSucceeded(); ReleaseListeners(); return rv; } nsresult nsHttpChannel::ResolveProxy() { LOG(("nsHttpChannel::ResolveProxy [this=%p]\n", this)); nsresult rv; nsCOMPtr pps = do_GetService(NS_PROTOCOLPROXYSERVICE_CONTRACTID, &rv); if (NS_FAILED(rv)) return rv; // using the nsIProtocolProxyService2 allows a minor performance // optimization, but if an add-on has only provided the original interface // then it is ok to use that version. nsCOMPtr pps2 = do_QueryInterface(pps); if (pps2) { rv = pps2->AsyncResolve2(this, mProxyResolveFlags, this, nullptr, getter_AddRefs(mProxyRequest)); } else { rv = pps->AsyncResolve(static_cast(this), mProxyResolveFlags, this, nullptr, getter_AddRefs(mProxyRequest)); } return rv; } bool nsHttpChannel::ResponseWouldVary(nsICacheEntry* entry) { nsresult rv; nsAutoCString buf, metaKey; Unused << mCachedResponseHead->GetHeader(nsHttp::Vary, buf); if (!buf.IsEmpty()) { constexpr auto prefix = "request-"_ns; // enumerate the elements of the Vary header... char* val = buf.BeginWriting(); // going to munge buf char* token = nsCRT::strtok(val, NS_HTTP_HEADER_SEPS, &val); while (token) { LOG( ("nsHttpChannel::ResponseWouldVary [channel=%p] " "processing %s\n", this, token)); // // if "*", then assume response would vary. technically speaking, // "Vary: header, *" is not permitted, but we allow it anyways. // // We hash values of cookie-headers for the following reasons: // // 1- cookies can be very large in size // // 2- cookies may contain sensitive information. (for parity with // out policy of not storing Set-cookie headers in the cache // meta data, we likewise do not want to store cookie headers // here.) // if (*token == '*') return true; // if we encounter this, just get out of here // build cache meta data key... metaKey = prefix + nsDependentCString(token); // check the last value of the given request header to see if it has // since changed. if so, then indeed the cached response is invalid. nsCString lastVal; entry->GetMetaDataElement(metaKey.get(), getter_Copies(lastVal)); LOG( ("nsHttpChannel::ResponseWouldVary [channel=%p] " "stored value = \"%s\"\n", this, lastVal.get())); // Look for value of "Cookie" in the request headers nsHttpAtom atom = nsHttp::ResolveAtom(token); nsAutoCString newVal; bool hasHeader = NS_SUCCEEDED(mRequestHead.GetHeader(atom, newVal)); if (!lastVal.IsEmpty()) { // value for this header in cache, but no value in request if (!hasHeader) { return true; // yes - response would vary } // If this is a cookie-header, stored metadata is not // the value itself but the hash. So we also hash the // outgoing value here in order to compare the hashes nsAutoCString hash; if (atom == nsHttp::Cookie) { rv = Hash(newVal.get(), hash); // If hash failed, be conservative (the cached hash // exists at this point) and claim response would vary if (NS_FAILED(rv)) return true; newVal = hash; LOG( ("nsHttpChannel::ResponseWouldVary [this=%p] " "set-cookie value hashed to %s\n", this, newVal.get())); } if (!newVal.Equals(lastVal)) { return true; // yes, response would vary } } else if (hasHeader) { // old value is empty, but newVal is set return true; } // next token... token = nsCRT::strtok(val, NS_HTTP_HEADER_SEPS, &val); } } return false; } // We need to have an implementation of this function just so that we can keep // all references to mCallOnResume of type nsHttpChannel: it's not OK in C++ // to set a member function ptr to a base class function. void nsHttpChannel::HandleAsyncAbort() { HttpAsyncAborter::HandleAsyncAbort(); } //----------------------------------------------------------------------------- // nsHttpChannel //----------------------------------------------------------------------------- bool nsHttpChannel::IsResumable(int64_t partialLen, int64_t contentLength, bool ignoreMissingPartialLen) const { bool hasContentEncoding = mCachedResponseHead->HasHeader(nsHttp::Content_Encoding); nsAutoCString etag; Unused << mCachedResponseHead->GetHeader(nsHttp::ETag, etag); bool hasWeakEtag = !etag.IsEmpty() && StringBeginsWith(etag, "W/"_ns); return (partialLen < contentLength) && (partialLen > 0 || ignoreMissingPartialLen) && !hasContentEncoding && !hasWeakEtag && mCachedResponseHead->IsResumable() && !mCustomConditionalRequest && !mCachedResponseHead->NoStore(); } nsresult nsHttpChannel::MaybeSetupByteRangeRequest( int64_t partialLen, int64_t contentLength, bool ignoreMissingPartialLen) { // Be pesimistic mIsPartialRequest = false; if (!IsResumable(partialLen, contentLength, ignoreMissingPartialLen)) return NS_ERROR_NOT_RESUMABLE; // looks like a partial entry we can reuse; add If-Range // and Range headers. nsresult rv = SetupByteRangeRequest(partialLen); if (NS_FAILED(rv)) { // Make the request unconditional again. UntieByteRangeRequest(); } return rv; } nsresult nsHttpChannel::SetupByteRangeRequest(int64_t partialLen) { // cached content has been found to be partial, add necessary request // headers to complete cache entry. // use strongest validator available... nsAutoCString val; Unused << mCachedResponseHead->GetHeader(nsHttp::ETag, val); if (val.IsEmpty()) Unused << mCachedResponseHead->GetHeader(nsHttp::Last_Modified, val); if (val.IsEmpty()) { // if we hit this code it means mCachedResponseHead->IsResumable() is // either broken or not being called. MOZ_ASSERT_UNREACHABLE("no cache validator"); mIsPartialRequest = false; return NS_ERROR_FAILURE; } char buf[64]; SprintfLiteral(buf, "bytes=%" PRId64 "-", partialLen); DebugOnly rv; rv = mRequestHead.SetHeader(nsHttp::Range, nsDependentCString(buf)); MOZ_ASSERT(NS_SUCCEEDED(rv)); rv = mRequestHead.SetHeader(nsHttp::If_Range, val); MOZ_ASSERT(NS_SUCCEEDED(rv)); mIsPartialRequest = true; return NS_OK; } void nsHttpChannel::UntieByteRangeRequest() { DebugOnly rv; rv = mRequestHead.ClearHeader(nsHttp::Range); MOZ_ASSERT(NS_SUCCEEDED(rv)); rv = mRequestHead.ClearHeader(nsHttp::If_Range); MOZ_ASSERT(NS_SUCCEEDED(rv)); } nsresult nsHttpChannel::ProcessPartialContent( const std::function& aContinueProcessResponseFunc) { // ok, we've just received a 206 // // we need to stream whatever data is in the cache out first, and then // pick up whatever data is on the wire, writing it into the cache. LOG(("nsHttpChannel::ProcessPartialContent [this=%p]\n", this)); NS_ENSURE_TRUE(mCachedResponseHead, NS_ERROR_NOT_INITIALIZED); NS_ENSURE_TRUE(mCacheEntry, NS_ERROR_NOT_INITIALIZED); // Make sure to clear bogus content-encodings before looking at the header ClearBogusContentEncodingIfNeeded(); // Check if the content-encoding we now got is different from the one we // got before nsAutoCString contentEncoding, cachedContentEncoding; // It is possible that there is not such headers Unused << mResponseHead->GetHeader(nsHttp::Content_Encoding, contentEncoding); Unused << mCachedResponseHead->GetHeader(nsHttp::Content_Encoding, cachedContentEncoding); if (PL_strcasecmp(contentEncoding.get(), cachedContentEncoding.get()) != 0) { Cancel(NS_ERROR_INVALID_CONTENT_ENCODING); return CallOnStartRequest(); } nsresult rv; int64_t cachedContentLength = mCachedResponseHead->ContentLength(); int64_t entitySize = mResponseHead->TotalEntitySize(); nsAutoCString contentRange; Unused << mResponseHead->GetHeader(nsHttp::Content_Range, contentRange); LOG( ("nsHttpChannel::ProcessPartialContent [this=%p trans=%p] " "original content-length %" PRId64 ", entity-size %" PRId64 ", content-range %s\n", this, mTransaction.get(), cachedContentLength, entitySize, contentRange.get())); if ((entitySize >= 0) && (cachedContentLength >= 0) && (entitySize != cachedContentLength)) { LOG( ("nsHttpChannel::ProcessPartialContent [this=%p] " "206 has different total entity size than the content length " "of the original partially cached entity.\n", this)); mCacheEntry->AsyncDoom(nullptr); Cancel(NS_ERROR_CORRUPTED_CONTENT); return CallOnStartRequest(); } if (mConcurrentCacheAccess) { // We started to read cached data sooner than its write has been done. // But the concurrent write has not finished completely, so we had to // do a range request. Now let the content coming from the network // be presented to consumers and also stored to the cache entry. rv = InstallCacheListener(mLogicalOffset); if (NS_FAILED(rv)) return rv; if (mOfflineCacheEntry) { rv = InstallOfflineCacheListener(mLogicalOffset); if (NS_FAILED(rv)) return rv; } } else { // suspend the current transaction rv = mTransactionPump->Suspend(); if (NS_FAILED(rv)) return rv; } // merge any new headers with the cached response headers mCachedResponseHead->UpdateHeaders(mResponseHead.get()); // update the cached response head nsAutoCString head; mCachedResponseHead->Flatten(head, true); rv = mCacheEntry->SetMetaDataElement("response-head", head.get()); if (NS_FAILED(rv)) return rv; // make the cached response be the current response mResponseHead = std::move(mCachedResponseHead); UpdateInhibitPersistentCachingFlag(); rv = UpdateExpirationTime(); if (NS_FAILED(rv)) return rv; // notify observers interested in looking at a response that has been // merged with any cached headers (http-on-examine-merged-response). gHttpHandler->OnExamineMergedResponse(this); if (mConcurrentCacheAccess) { mCachedContentIsPartial = false; // Leave the mConcurrentCacheAccess flag set, we want to use it // to prevent duplicate OnStartRequest call on the target listener // in case this channel is canceled before it gets its OnStartRequest // from the http transaction. return rv; } // Now we continue reading the network response. // the cached content is valid, although incomplete. mCachedContentIsValid = true; return CallOrWaitForResume([aContinueProcessResponseFunc](auto* self) { nsresult rv = self->ReadFromCache(false); return aContinueProcessResponseFunc(self, rv); }); } nsresult nsHttpChannel::OnDoneReadingPartialCacheEntry(bool* streamDone) { nsresult rv; LOG(("nsHttpChannel::OnDoneReadingPartialCacheEntry [this=%p]", this)); // by default, assume we would have streamed all data or failed... *streamDone = true; // setup cache listener to append to cache entry int64_t size; rv = mCacheEntry->GetDataSize(&size); if (NS_FAILED(rv)) return rv; rv = InstallCacheListener(size); if (NS_FAILED(rv)) return rv; // Entry is valid, do it now, after the output stream has been opened, // otherwise when done earlier, pending readers would consider the cache // entry still as partial (CacheEntry::GetDataSize would return the partial // data size) and consumers would do the conditional request again. rv = mCacheEntry->SetValid(); if (NS_FAILED(rv)) return rv; // need to track the logical offset of the data being sent to our listener mLogicalOffset = size; // we're now completing the cached content, so we can clear this flag. // this puts us in the state of a regular download. mCachedContentIsPartial = false; // The cache input stream pump is finished, we do not need it any more. // (see bug 1313923) mCachePump = nullptr; // resume the transaction if it exists, otherwise the pipe contained the // remaining part of the document and we've now streamed all of the data. if (mTransactionPump) { rv = mTransactionPump->Resume(); if (NS_SUCCEEDED(rv)) *streamDone = false; } else MOZ_ASSERT_UNREACHABLE("no transaction"); return rv; } //----------------------------------------------------------------------------- // nsHttpChannel //----------------------------------------------------------------------------- bool nsHttpChannel::ShouldBypassProcessNotModified() { if (mCustomConditionalRequest) { LOG(("Bypassing ProcessNotModified due to custom conditional headers")); return true; } if (!mDidReval) { LOG( ("Server returned a 304 response even though we did not send a " "conditional request")); return true; } return false; } nsresult nsHttpChannel::ProcessNotModified( const std::function& aContinueProcessResponseFunc) { nsresult rv; LOG(("nsHttpChannel::ProcessNotModified [this=%p]\n", this)); // Assert ShouldBypassProcessNotModified() has been checked before call to // ProcessNotModified(). MOZ_ASSERT(!ShouldBypassProcessNotModified()); MOZ_ASSERT(mCachedResponseHead); MOZ_ASSERT(mCacheEntry); NS_ENSURE_TRUE(mCachedResponseHead && mCacheEntry, NS_ERROR_UNEXPECTED); // If the 304 response contains a Last-Modified different than the // one in our cache that is pretty suspicious and is, in at least the // case of bug 716840, a sign of the server having previously corrupted // our cache with a bad response. Take the minor step here of just dooming // that cache entry so there is a fighting chance of getting things on the // right track. nsAutoCString lastModifiedCached; nsAutoCString lastModified304; rv = mCachedResponseHead->GetHeader(nsHttp::Last_Modified, lastModifiedCached); if (NS_SUCCEEDED(rv)) { rv = mResponseHead->GetHeader(nsHttp::Last_Modified, lastModified304); } if (NS_SUCCEEDED(rv) && !lastModified304.Equals(lastModifiedCached)) { LOG( ("Cache Entry and 304 Last-Modified Headers Do Not Match " "[%s] and [%s]\n", lastModifiedCached.get(), lastModified304.get())); mCacheEntry->AsyncDoom(nullptr); Telemetry::Accumulate(Telemetry::CACHE_LM_INCONSISTENT, true); } // merge any new headers with the cached response headers mCachedResponseHead->UpdateHeaders(mResponseHead.get()); // update the cached response head nsAutoCString head; mCachedResponseHead->Flatten(head, true); rv = mCacheEntry->SetMetaDataElement("response-head", head.get()); if (NS_FAILED(rv)) return rv; // make the cached response be the current response mResponseHead = std::move(mCachedResponseHead); UpdateInhibitPersistentCachingFlag(); rv = UpdateExpirationTime(); if (NS_FAILED(rv)) return rv; rv = AddCacheEntryHeaders(mCacheEntry); if (NS_FAILED(rv)) return rv; // notify observers interested in looking at a reponse that has been // merged with any cached headers gHttpHandler->OnExamineMergedResponse(this); mCachedContentIsValid = true; // Tell other consumers the entry is OK to use rv = mCacheEntry->SetValid(); if (NS_FAILED(rv)) return rv; return CallOrWaitForResume([aContinueProcessResponseFunc](auto* self) { nsresult rv = self->ReadFromCache(false); return aContinueProcessResponseFunc(self, rv); }); } nsresult nsHttpChannel::ProcessFallback(bool* waitingForRedirectCallback) { LOG(("nsHttpChannel::ProcessFallback [this=%p]\n", this)); nsresult rv; *waitingForRedirectCallback = false; mFallingBack = false; // At this point a load has failed (either due to network problems // or an error returned on the server). Perform an application // cache fallback if we have a URI to fall back to. if (!mApplicationCache || mFallbackKey.IsEmpty() || mFallbackChannel) { LOG((" choosing not to fallback [%p,%s,%d]", mApplicationCache.get(), mFallbackKey.get(), mFallbackChannel)); return NS_OK; } // Make sure the fallback entry hasn't been marked as a foreign // entry. uint32_t fallbackEntryType; rv = mApplicationCache->GetTypes(mFallbackKey, &fallbackEntryType); NS_ENSURE_SUCCESS(rv, rv); if (fallbackEntryType & nsIApplicationCache::ITEM_FOREIGN) { // This cache points to a fallback that refers to a different // manifest. Refuse to fall back. return NS_OK; } if (!IsInSubpathOfAppCacheManifest(mApplicationCache, mFallbackKey)) { // Refuse to fallback if the fallback key is not contained in the same // path as the cache manifest. return NS_OK; } MOZ_ASSERT(fallbackEntryType & nsIApplicationCache::ITEM_FALLBACK, "Fallback entry not marked correctly!"); // Kill any offline cache entry, and disable offline caching for the // fallback. if (mOfflineCacheEntry) { mOfflineCacheEntry->AsyncDoom(nullptr); mOfflineCacheEntry = nullptr; } mApplicationCacheForWrite = nullptr; mOfflineCacheEntry = nullptr; // Close the current cache entry. CloseCacheEntry(true); // Create a new channel to load the fallback entry. RefPtr newChannel; rv = gHttpHandler->NewChannel(mURI, mLoadInfo, getter_AddRefs(newChannel)); NS_ENSURE_SUCCESS(rv, rv); uint32_t redirectFlags = nsIChannelEventSink::REDIRECT_INTERNAL; rv = SetupReplacementChannel(mURI, newChannel, true, redirectFlags); NS_ENSURE_SUCCESS(rv, rv); // Make sure the new channel loads from the fallback key. nsCOMPtr httpInternal = do_QueryInterface(newChannel, &rv); NS_ENSURE_SUCCESS(rv, rv); rv = httpInternal->SetupFallbackChannel(mFallbackKey.get()); NS_ENSURE_SUCCESS(rv, rv); // ... and fallbacks should only load from the cache. uint32_t newLoadFlags = mLoadFlags | LOAD_REPLACE | LOAD_ONLY_FROM_CACHE; rv = newChannel->SetLoadFlags(newLoadFlags); // Inform consumers about this fake redirect mRedirectChannel = newChannel; PushRedirectAsyncFunc(&nsHttpChannel::ContinueProcessFallback); rv = gHttpHandler->AsyncOnChannelRedirect(this, newChannel, redirectFlags); if (NS_SUCCEEDED(rv)) rv = WaitForRedirectCallback(); if (NS_FAILED(rv)) { AutoRedirectVetoNotifier notifier(this); PopRedirectAsyncFunc(&nsHttpChannel::ContinueProcessFallback); return rv; } // Indicate we are now waiting for the asynchronous redirect callback // if all went OK. *waitingForRedirectCallback = true; return NS_OK; } nsresult nsHttpChannel::ContinueProcessFallback(nsresult rv) { AutoRedirectVetoNotifier notifier(this); if (NS_FAILED(rv)) return rv; MOZ_ASSERT(mRedirectChannel, "No redirect channel?"); // Make sure to do this after we received redirect veto answer, // i.e. after all sinks had been notified mRedirectChannel->SetOriginalURI(mOriginalURI); rv = mRedirectChannel->AsyncOpen(mListener); NS_ENSURE_SUCCESS(rv, rv); if (mLoadFlags & LOAD_INITIAL_DOCUMENT_URI) { MaybeWarnAboutAppCache(); } // close down this channel Cancel(NS_BINDING_REDIRECTED); notifier.RedirectSucceeded(); ReleaseListeners(); mFallingBack = true; return NS_OK; } // Determines if a request is a byte range request for a subrange, // i.e. is a byte range request, but not a 0- byte range request. static bool IsSubRangeRequest(nsHttpRequestHead& aRequestHead) { nsAutoCString byteRange; if (NS_FAILED(aRequestHead.GetHeader(nsHttp::Range, byteRange))) { return false; } return !byteRange.EqualsLiteral("bytes=0-"); } nsresult nsHttpChannel::OpenCacheEntry(bool isHttps) { // Drop this flag here mConcurrentCacheAccess = 0; mLoadedFromApplicationCache = false; LOG(("nsHttpChannel::OpenCacheEntry [this=%p]", this)); // make sure we're not abusing this function MOZ_ASSERT(!mCacheEntry, "cache entry already open"); if (mRequestHead.IsPost()) { // If the post id is already set then this is an attempt to replay // a post transaction via the cache. Otherwise, we need a unique // post id for this transaction. if (mPostID == 0) mPostID = gHttpHandler->GenerateUniqueID(); } else if (!mRequestHead.IsGet() && !mRequestHead.IsHead()) { // don't use the cache for other types of requests return NS_OK; } // Pick up an application cache from the notification // callbacks if available and if we are not an intercepted channel. if (!mApplicationCache && mInheritApplicationCache) { nsCOMPtr appCacheContainer; GetCallback(appCacheContainer); if (appCacheContainer) { appCacheContainer->GetApplicationCache(getter_AddRefs(mApplicationCache)); } } return OpenCacheEntryInternal(isHttps, mApplicationCache, true); } bool nsHttpChannel::IsIsolated() { if (mHasBeenIsolatedChecked) { return mIsIsolated; } mIsIsolated = StaticPrefs::browser_cache_cache_isolation() || (IsThirdPartyTrackingResource() && !ContentBlocking::ShouldAllowAccessFor(this, mURI, nullptr)); mHasBeenIsolatedChecked = true; return mIsIsolated; } const nsCString& nsHttpChannel::GetTopWindowOrigin() { if (mTopWindowOriginComputed) { return mTopWindowOrigin; } nsCOMPtr topWindowURI; nsresult rv = GetTopWindowURI(getter_AddRefs(topWindowURI)); bool isDocument = false; if (NS_FAILED(rv) && NS_SUCCEEDED(GetIsMainDocumentChannel(&isDocument)) && isDocument) { // For top-level documents, use the document channel's origin to compute // the unique storage space identifier instead of the top Window URI. rv = NS_GetFinalChannelURI(this, getter_AddRefs(topWindowURI)); NS_ENSURE_SUCCESS(rv, mTopWindowOrigin); } rv = nsContentUtils::GetASCIIOrigin(topWindowURI ? topWindowURI : mURI, mTopWindowOrigin); NS_ENSURE_SUCCESS(rv, mTopWindowOrigin); mTopWindowOriginComputed = true; return mTopWindowOrigin; } nsresult nsHttpChannel::OpenCacheEntryInternal( bool isHttps, nsIApplicationCache* applicationCache, bool allowApplicationCache) { MOZ_ASSERT_IF(!allowApplicationCache, !applicationCache); nsresult rv; if (mResuming) { // We don't support caching for requests initiated // via nsIResumableChannel. return NS_OK; } // Don't cache byte range requests which are subranges, only cache 0- // byte range requests. if (IsSubRangeRequest(mRequestHead)) { return NS_OK; } // Handle correctly mCacheEntriesToWaitFor AutoCacheWaitFlags waitFlags(this); nsAutoCString cacheKey; nsCOMPtr cacheStorageService( services::GetCacheStorageService()); if (!cacheStorageService) { return NS_ERROR_NOT_AVAILABLE; } nsCOMPtr cacheStorage; if (!mFallbackKey.IsEmpty() && mFallbackChannel) { // This is a fallback channel, open fallback URI instead rv = NS_NewURI(getter_AddRefs(mCacheEntryURI), mFallbackKey); NS_ENSURE_SUCCESS(rv, rv); } else { mCacheEntryURI = mURI; } RefPtr info = GetLoadContextInfo(this); if (!info) { return NS_ERROR_FAILURE; } uint32_t cacheEntryOpenFlags; bool offline = gIOService->IsOffline(); bool maybeRCWN = false; nsAutoCString cacheControlRequestHeader; Unused << mRequestHead.GetHeader(nsHttp::Cache_Control, cacheControlRequestHeader); CacheControlParser cacheControlRequest(cacheControlRequestHeader); if (cacheControlRequest.NoStore()) { goto bypassCacheEntryOpen; } if (offline || (mLoadFlags & INHIBIT_CACHING)) { if (BYPASS_LOCAL_CACHE(mLoadFlags, mPreferCacheLoadOverBypass) && !offline) { goto bypassCacheEntryOpen; } cacheEntryOpenFlags = nsICacheStorage::OPEN_READONLY; mCacheEntryIsReadOnly = true; } else if (BYPASS_LOCAL_CACHE(mLoadFlags, mPreferCacheLoadOverBypass) && !applicationCache) { cacheEntryOpenFlags = nsICacheStorage::OPEN_TRUNCATE; } else { cacheEntryOpenFlags = nsICacheStorage::OPEN_NORMALLY | nsICacheStorage::CHECK_MULTITHREADED; } // Remember the request is a custom conditional request so that we can // process any 304 response correctly. mCustomConditionalRequest = mRequestHead.HasHeader(nsHttp::If_Modified_Since) || mRequestHead.HasHeader(nsHttp::If_None_Match) || mRequestHead.HasHeader(nsHttp::If_Unmodified_Since) || mRequestHead.HasHeader(nsHttp::If_Match) || mRequestHead.HasHeader(nsHttp::If_Range); if (!mPostID && applicationCache) { rv = cacheStorageService->AppCacheStorage(info, applicationCache, getter_AddRefs(cacheStorage)); } else if (mLoadFlags & INHIBIT_PERSISTENT_CACHING) { rv = cacheStorageService->MemoryCacheStorage( info, // ? choose app cache as well... getter_AddRefs(cacheStorage)); } else if (mPinCacheContent) { rv = cacheStorageService->PinningCacheStorage(info, getter_AddRefs(cacheStorage)); } else { bool lookupAppCache = (mChooseApplicationCache || (mLoadFlags & LOAD_CHECK_OFFLINE_CACHE)) && !mPostID && MOZ_LIKELY(allowApplicationCache); // Try to race only if we use disk cache storage and we don't lookup // app cache first maybeRCWN = (!lookupAppCache) && mRequestHead.IsSafeMethod(); rv = cacheStorageService->DiskCacheStorage(info, lookupAppCache, getter_AddRefs(cacheStorage)); } NS_ENSURE_SUCCESS(rv, rv); if ((mClassOfService & nsIClassOfService::Leader) || (mLoadFlags & LOAD_INITIAL_DOCUMENT_URI)) cacheEntryOpenFlags |= nsICacheStorage::OPEN_PRIORITY; // Only for backward compatibility with the old cache back end. // When removed, remove the flags and related code snippets. if (mLoadFlags & LOAD_BYPASS_LOCAL_CACHE_IF_BUSY) cacheEntryOpenFlags |= nsICacheStorage::OPEN_BYPASS_IF_BUSY; if (mPostID) { mCacheIdExtension.Append(nsPrintfCString("%d", mPostID)); } if (mIsTRRServiceChannel) { mCacheIdExtension.Append("TRR"); } if (mRequestHead.IsHead()) { mCacheIdExtension.Append("HEAD"); } if (IsIsolated()) { auto& topWindowOrigin = GetTopWindowOrigin(); if (topWindowOrigin.IsEmpty()) { return NS_ERROR_FAILURE; } mCacheIdExtension.Append("-unique:"); mCacheIdExtension.Append(topWindowOrigin); } mCacheOpenWithPriority = cacheEntryOpenFlags & nsICacheStorage::OPEN_PRIORITY; mCacheQueueSizeWhenOpen = CacheStorageService::CacheQueueSize(mCacheOpenWithPriority); if (StaticPrefs::network_http_rcwn_enabled() && maybeRCWN && !mApplicationCacheForWrite) { bool hasAltData = false; uint32_t sizeInKb = 0; rv = cacheStorage->GetCacheIndexEntryAttrs( mCacheEntryURI, mCacheIdExtension, &hasAltData, &sizeInKb); // We will attempt to race the network vs the cache if we've found // this entry in the cache index, and it has appropriate attributes // (doesn't have alt-data, and has a small size) if (NS_SUCCEEDED(rv) && !hasAltData && sizeInKb < StaticPrefs::network_http_rcwn_small_resource_size_kb()) { MaybeRaceCacheWithNetwork(); } } if (!mCacheOpenDelay) { MOZ_ASSERT(NS_IsMainThread(), "Should be called on the main thread"); if (mNetworkTriggered) { mRaceCacheWithNetwork = StaticPrefs::network_http_rcwn_enabled(); } rv = cacheStorage->AsyncOpenURI(mCacheEntryURI, mCacheIdExtension, cacheEntryOpenFlags, this); } else { // We pass `this` explicitly as a parameter due to the raw pointer // to refcounted object in lambda analysis. mCacheOpenFunc = [cacheEntryOpenFlags, cacheStorage](nsHttpChannel* self) -> void { MOZ_ASSERT(NS_IsMainThread(), "Should be called on the main thread"); cacheStorage->AsyncOpenURI(self->mCacheEntryURI, self->mCacheIdExtension, cacheEntryOpenFlags, self); }; // calls nsHttpChannel::Notify after `mCacheOpenDelay` milliseconds NS_NewTimerWithCallback(getter_AddRefs(mCacheOpenTimer), this, mCacheOpenDelay, nsITimer::TYPE_ONE_SHOT); } NS_ENSURE_SUCCESS(rv, rv); waitFlags.Keep(WAIT_FOR_CACHE_ENTRY); bypassCacheEntryOpen: if (!mApplicationCacheForWrite || !allowApplicationCache) return NS_OK; // If there is an app cache to write to, open the entry right now in parallel. // make sure we're not abusing this function MOZ_ASSERT(!mOfflineCacheEntry, "cache entry already open"); if (offline) { // only put things in the offline cache while online return NS_OK; } if (mLoadFlags & INHIBIT_CACHING) { // respect demand not to cache return NS_OK; } if (!mRequestHead.IsGet()) { // only cache complete documents offline return NS_OK; } rv = cacheStorageService->AppCacheStorage(info, mApplicationCacheForWrite, getter_AddRefs(cacheStorage)); NS_ENSURE_SUCCESS(rv, rv); rv = cacheStorage->AsyncOpenURI(mURI, ""_ns, nsICacheStorage::OPEN_TRUNCATE, this); NS_ENSURE_SUCCESS(rv, rv); waitFlags.Keep(WAIT_FOR_OFFLINE_CACHE_ENTRY); return NS_OK; } nsresult nsHttpChannel::CheckPartial(nsICacheEntry* aEntry, int64_t* aSize, int64_t* aContentLength) { return nsHttp::CheckPartial( aEntry, aSize, aContentLength, mCachedResponseHead ? mCachedResponseHead.get() : mResponseHead.get()); } void nsHttpChannel::UntieValidationRequest() { DebugOnly rv; // Make the request unconditional again. rv = mRequestHead.ClearHeader(nsHttp::If_Modified_Since); MOZ_ASSERT(NS_SUCCEEDED(rv)); rv = mRequestHead.ClearHeader(nsHttp::If_None_Match); MOZ_ASSERT(NS_SUCCEEDED(rv)); rv = mRequestHead.ClearHeader(nsHttp::ETag); MOZ_ASSERT(NS_SUCCEEDED(rv)); } NS_IMETHODIMP nsHttpChannel::OnCacheEntryCheck(nsICacheEntry* entry, nsIApplicationCache* appCache, uint32_t* aResult) { nsresult rv = NS_OK; LOG(("nsHttpChannel::OnCacheEntryCheck enter [channel=%p entry=%p]", this, entry)); mozilla::MutexAutoLock lock(mRCWNLock); if (mRaceCacheWithNetwork && mFirstResponseSource == RESPONSE_FROM_NETWORK) { LOG( ("Not using cached response because we've already got one from the " "network\n")); *aResult = ENTRY_NOT_WANTED; // Net-win indicates that mOnStartRequestTimestamp is from net. int64_t savedTime = (TimeStamp::Now() - mOnStartRequestTimestamp).ToMilliseconds(); Telemetry::Accumulate(Telemetry::NETWORK_RACE_CACHE_WITH_NETWORK_SAVED_TIME, savedTime); return NS_OK; } else if (mRaceCacheWithNetwork && mFirstResponseSource == RESPONSE_PENDING) { mOnCacheEntryCheckTimestamp = TimeStamp::Now(); } nsAutoCString cacheControlRequestHeader; Unused << mRequestHead.GetHeader(nsHttp::Cache_Control, cacheControlRequestHeader); CacheControlParser cacheControlRequest(cacheControlRequestHeader); if (cacheControlRequest.NoStore()) { LOG( ("Not using cached response based on no-store request cache " "directive\n")); *aResult = ENTRY_NOT_WANTED; return NS_OK; } // Be pessimistic: assume the cache entry has no useful data. *aResult = ENTRY_WANTED; mCachedContentIsValid = false; nsCString buf; // Get the method that was used to generate the cached response rv = entry->GetMetaDataElement("request-method", getter_Copies(buf)); NS_ENSURE_SUCCESS(rv, rv); bool methodWasHead = buf.EqualsLiteral("HEAD"); bool methodWasGet = buf.EqualsLiteral("GET"); if (methodWasHead) { // The cached response does not contain an entity. We can only reuse // the response if the current request is also HEAD. if (!mRequestHead.IsHead()) { *aResult = ENTRY_NOT_WANTED; return NS_OK; } } buf.Adopt(nullptr); // We'll need this value in later computations... uint32_t lastModifiedTime; rv = entry->GetLastModified(&lastModifiedTime); NS_ENSURE_SUCCESS(rv, rv); // Determine if this is the first time that this cache entry // has been accessed during this session. bool fromPreviousSession = (gHttpHandler->SessionStartTime() > lastModifiedTime); // Get the cached HTTP response headers mCachedResponseHead = MakeUnique(); rv = nsHttp::GetHttpResponseHeadFromCacheEntry(entry, mCachedResponseHead.get()); NS_ENSURE_SUCCESS(rv, rv); bool isCachedRedirect = WillRedirect(*mCachedResponseHead); // Do not return 304 responses from the cache, and also do not return // any other non-redirect 3xx responses from the cache (see bug 759043). NS_ENSURE_TRUE((mCachedResponseHead->Status() / 100 != 3) || isCachedRedirect, NS_ERROR_ABORT); if (mCachedResponseHead->NoStore() && mCacheEntryIsReadOnly) { // This prevents loading no-store responses when navigating back // while the browser is set to work offline. LOG((" entry loading as read-only but is no-store, set INHIBIT_CACHING")); mLoadFlags |= nsIRequest::INHIBIT_CACHING; } // Don't bother to validate items that are read-only, // unless they are read-only because of INHIBIT_CACHING or because // we're updating the offline cache. // Don't bother to validate if this is a fallback entry. if (!mApplicationCacheForWrite && (appCache || (mCacheEntryIsReadOnly && !(mLoadFlags & nsIRequest::INHIBIT_CACHING)))) { if (!appCache) { int64_t size, contentLength; rv = CheckPartial(entry, &size, &contentLength); NS_ENSURE_SUCCESS(rv, rv); if (contentLength != int64_t(-1) && contentLength != size) { *aResult = ENTRY_NOT_WANTED; return NS_OK; } } rv = OpenCacheInputStream(entry, true, !!appCache); if (NS_SUCCEEDED(rv)) { mCachedContentIsValid = true; entry->MaybeMarkValid(); } return rv; } bool wantCompleteEntry = false; if (!methodWasHead && !isCachedRedirect) { // If the cached content-length is set and it does not match the data // size of the cached content, then the cached response is partial... // either we need to issue a byte range request or we need to refetch // the entire document. // // We exclude redirects from this check because we (usually) strip the // entity when we store the cache entry, and even if we didn't, we // always ignore a cached redirect's entity anyway. See bug 759043. int64_t size, contentLength; rv = CheckPartial(entry, &size, &contentLength); NS_ENSURE_SUCCESS(rv, rv); if (size == int64_t(-1)) { LOG((" write is in progress")); if (mLoadFlags & LOAD_BYPASS_LOCAL_CACHE_IF_BUSY) { LOG( (" not interested in the entry, " "LOAD_BYPASS_LOCAL_CACHE_IF_BUSY specified")); *aResult = ENTRY_NOT_WANTED; return NS_OK; } // Ignore !(size > 0) from the resumability condition if (!IsResumable(size, contentLength, true)) { if (IsNavigation()) { LOG( (" bypassing wait for the entry, " "this is a navigational load")); *aResult = ENTRY_NOT_WANTED; return NS_OK; } LOG( (" wait for entry completion, " "response is not resumable")); wantCompleteEntry = true; } else { mConcurrentCacheAccess = 1; } } else if (contentLength != int64_t(-1) && contentLength != size) { LOG( ("Cached data size does not match the Content-Length header " "[content-length=%" PRId64 " size=%" PRId64 "]\n", contentLength, size)); rv = MaybeSetupByteRangeRequest(size, contentLength); mCachedContentIsPartial = NS_SUCCEEDED(rv) && mIsPartialRequest; if (mCachedContentIsPartial) { rv = OpenCacheInputStream(entry, false, !!appCache); if (NS_FAILED(rv)) { UntieByteRangeRequest(); return rv; } *aResult = ENTRY_NEEDS_REVALIDATION; return NS_OK; } if (size == 0 && mCacheOnlyMetadata) { // Don't break cache entry load when the entry's data size // is 0 and mCacheOnlyMetadata flag is set. In that case we // want to proceed since the LOAD_ONLY_IF_MODIFIED flag is // also set. MOZ_ASSERT(mLoadFlags & LOAD_ONLY_IF_MODIFIED); } else { return rv; } } } bool isHttps = mURI->SchemeIs("https"); bool doValidation = false; bool doBackgroundValidation = false; bool canAddImsHeader = true; bool isForcedValid = false; entry->GetIsForcedValid(&isForcedValid); bool weaklyFramed, isImmutable; nsHttp::DetermineFramingAndImmutability(entry, mCachedResponseHead.get(), isHttps, &weaklyFramed, &isImmutable); // Cached entry is not the entity we request (see bug #633743) if (ResponseWouldVary(entry)) { LOG(("Validating based on Vary headers returning TRUE\n")); canAddImsHeader = false; doValidation = true; } else { doValidation = nsHttp::ValidationRequired( isForcedValid, mCachedResponseHead.get(), mLoadFlags, mAllowStaleCacheContent, isImmutable, mCustomConditionalRequest, mRequestHead, entry, cacheControlRequest, fromPreviousSession, &doBackgroundValidation); } nsAutoCString requestedETag; if (!doValidation && NS_SUCCEEDED(mRequestHead.GetHeader(nsHttp::If_Match, requestedETag)) && (methodWasGet || methodWasHead)) { nsAutoCString cachedETag; Unused << mCachedResponseHead->GetHeader(nsHttp::ETag, cachedETag); if (!cachedETag.IsEmpty() && (StringBeginsWith(cachedETag, "W/"_ns) || !requestedETag.Equals(cachedETag))) { // User has defined If-Match header, if the cached entry is not // matching the provided header value or the cached ETag is weak, // force validation. doValidation = true; } } // Previous error should not be propagated. rv = NS_OK; if (!doValidation) { // // Check the authorization headers used to generate the cache entry. // We must validate the cache entry if: // // 1) the cache entry was generated prior to this session w/ // credentials (see bug 103402). // 2) the cache entry was generated w/o credentials, but would now // require credentials (see bug 96705). // // NOTE: this does not apply to proxy authentication. // entry->GetMetaDataElement("auth", getter_Copies(buf)); doValidation = (fromPreviousSession && !buf.IsEmpty()) || (buf.IsEmpty() && mRequestHead.HasHeader(nsHttp::Authorization)); } // Bug #561276: We maintain a chain of cache-keys which returns cached // 3xx-responses (redirects) in order to detect cycles. If a cycle is // found, ignore the cached response and hit the net. Otherwise, use // the cached response and add the cache-key to the chain. Note that // a limited number of redirects (cached or not) is allowed and is // enforced independently of this mechanism if (!doValidation && isCachedRedirect) { nsAutoCString cacheKey; rv = GenerateCacheKey(mPostID, cacheKey); MOZ_ASSERT(NS_SUCCEEDED(rv)); if (!mRedirectedCachekeys) mRedirectedCachekeys = MakeUnique>(); else if (mRedirectedCachekeys->Contains(cacheKey)) doValidation = true; LOG(("Redirection-chain %s key %s\n", doValidation ? "contains" : "does not contain", cacheKey.get())); // Append cacheKey if not in the chain already if (!doValidation) mRedirectedCachekeys->AppendElement(cacheKey); } mCachedContentIsValid = !doValidation; if (doValidation) { // // now, we are definitely going to issue a HTTP request to the server. // make it conditional if possible. // // do not attempt to validate no-store content, since servers will not // expect it to be cached. (we only keep it in our cache for the // purposes of back/forward, etc.) // // the request method MUST be either GET or HEAD (see bug 175641) and // the cached response code must be < 400 // // the cached content must not be weakly framed or marked immutable // // do not override conditional headers when consumer has defined its own if (!mCachedResponseHead->NoStore() && (mRequestHead.IsGet() || mRequestHead.IsHead()) && !mCustomConditionalRequest && !weaklyFramed && !isImmutable && (mCachedResponseHead->Status() < 400)) { if (mConcurrentCacheAccess) { // In case of concurrent read and also validation request we // must wait for the current writer to close the output stream // first. Otherwise, when the writer's job would have been interrupted // before all the data were downloaded, we'd have to do a range request // which would be a second request in line during this channel's // life-time. nsHttpChannel is not designed to do that, so rather // turn off concurrent read and wait for entry's completion. // Then only re-validation or range-re-validation request will go out. mConcurrentCacheAccess = 0; // This will cause that OnCacheEntryCheck is called again with the same // entry after the writer is done. wantCompleteEntry = true; } else { nsAutoCString val; // Add If-Modified-Since header if a Last-Modified was given // and we are allowed to do this (see bugs 510359 and 269303) if (canAddImsHeader) { Unused << mCachedResponseHead->GetHeader(nsHttp::Last_Modified, val); if (!val.IsEmpty()) { rv = mRequestHead.SetHeader(nsHttp::If_Modified_Since, val); MOZ_ASSERT(NS_SUCCEEDED(rv)); } } // Add If-None-Match header if an ETag was given in the response Unused << mCachedResponseHead->GetHeader(nsHttp::ETag, val); if (!val.IsEmpty()) { rv = mRequestHead.SetHeader(nsHttp::If_None_Match, val); MOZ_ASSERT(NS_SUCCEEDED(rv)); } mDidReval = true; } } } if (mCachedContentIsValid || mDidReval) { rv = OpenCacheInputStream(entry, mCachedContentIsValid, !!appCache); if (NS_FAILED(rv)) { // If we can't get the entity then we have to act as though we // don't have the cache entry. if (mDidReval) { UntieValidationRequest(); mDidReval = false; } mCachedContentIsValid = false; } } if (mDidReval) *aResult = ENTRY_NEEDS_REVALIDATION; else if (wantCompleteEntry) *aResult = RECHECK_AFTER_WRITE_FINISHED; else { *aResult = ENTRY_WANTED; if (doBackgroundValidation) { PerformBackgroundCacheRevalidation(); } } if (mCachedContentIsValid) { entry->MaybeMarkValid(); } LOG( ("nsHTTPChannel::OnCacheEntryCheck exit [this=%p doValidation=%d " "result=%d]\n", this, doValidation, *aResult)); return rv; } NS_IMETHODIMP nsHttpChannel::OnCacheEntryAvailable(nsICacheEntry* entry, bool aNew, nsIApplicationCache* aAppCache, nsresult status) { MOZ_ASSERT(NS_IsMainThread()); nsresult rv; LOG( ("nsHttpChannel::OnCacheEntryAvailable [this=%p entry=%p " "new=%d appcache=%p status=%" PRIx32 " mAppCache=%p mAppCacheForWrite=%p]\n", this, entry, aNew, aAppCache, static_cast(status), mApplicationCache.get(), mApplicationCacheForWrite.get())); // if the channel's already fired onStopRequest, then we should ignore // this event. if (!mIsPending) { mCacheInputStream.CloseAndRelease(); return NS_OK; } rv = OnCacheEntryAvailableInternal(entry, aNew, aAppCache, status); if (NS_FAILED(rv)) { CloseCacheEntry(false); if (mRaceCacheWithNetwork && mNetworkTriggered && mFirstResponseSource != RESPONSE_FROM_CACHE) { // Ignore the error if we're racing cache with network and the cache // didn't win, The network part will handle cancelation or any other // error. Otherwise we could end up calling the listener twice, see // bug 1397593. LOG( (" not calling AsyncAbort() because we're racing cache with " "network")); } else { Unused << AsyncAbort(rv); } } return NS_OK; } nsresult nsHttpChannel::OnCacheEntryAvailableInternal( nsICacheEntry* entry, bool aNew, nsIApplicationCache* aAppCache, nsresult status) { nsresult rv; if (mCanceled) { LOG(("channel was canceled [this=%p status=%" PRIx32 "]\n", this, static_cast(static_cast(mStatus)))); return mStatus; } if (mIgnoreCacheEntry) { if (!entry || aNew) { // We use this flag later to decide whether to report // LABELS_NETWORK_RACE_CACHE_VALIDATION::NotSent. We didn't have // an usable entry, so drop the flag. mIgnoreCacheEntry = false; } entry = nullptr; status = NS_ERROR_NOT_AVAILABLE; } if (aAppCache) { if (mApplicationCache == aAppCache && !mCacheEntry) { rv = OnOfflineCacheEntryAvailable(entry, aNew, aAppCache, status); } else if (mApplicationCacheForWrite == aAppCache && aNew && !mOfflineCacheEntry) { rv = OnOfflineCacheEntryForWritingAvailable(entry, aAppCache, status); } else { rv = OnOfflineCacheEntryAvailable(entry, aNew, aAppCache, status); } } else { rv = OnNormalCacheEntryAvailable(entry, aNew, status); } if (NS_FAILED(rv) && (mLoadFlags & LOAD_ONLY_FROM_CACHE)) { // If we have a fallback URI (and we're not already // falling back), process the fallback asynchronously. if (!mFallbackChannel && !mFallbackKey.IsEmpty()) { return AsyncCall(&nsHttpChannel::HandleAsyncFallback); } return NS_ERROR_DOCUMENT_NOT_CACHED; } if (NS_FAILED(rv)) { return rv; } // We may be waiting for more callbacks... if (AwaitingCacheCallbacks()) { return NS_OK; } if (mRaceCacheWithNetwork && ((mCacheEntry && !mCachedContentIsValid && (mDidReval || mCachedContentIsPartial)) || mIgnoreCacheEntry)) { // We won't send the conditional request because the unconditional // request was already sent (see bug 1377223). AccumulateCategorical( Telemetry::LABELS_NETWORK_RACE_CACHE_VALIDATION::NotSent); } if (mRaceCacheWithNetwork && mCachedContentIsValid) { Unused << ReadFromCache(true); } return TriggerNetwork(); } nsresult nsHttpChannel::OnNormalCacheEntryAvailable(nsICacheEntry* aEntry, bool aNew, nsresult aEntryStatus) { mCacheEntriesToWaitFor &= ~WAIT_FOR_CACHE_ENTRY; if (NS_FAILED(aEntryStatus) || aNew) { // Make sure this flag is dropped. It may happen the entry is doomed // between OnCacheEntryCheck and OnCacheEntryAvailable. mCachedContentIsValid = false; // From the same reason remove any conditional headers added // in OnCacheEntryCheck. if (mDidReval) { LOG((" Removing conditional request headers")); UntieValidationRequest(); mDidReval = false; } if (mCachedContentIsPartial) { LOG((" Removing byte range request headers")); UntieByteRangeRequest(); mCachedContentIsPartial = false; } if (mLoadFlags & LOAD_ONLY_FROM_CACHE) { // if this channel is only allowed to pull from the cache, then // we must fail if we were unable to open a cache entry for read. return NS_ERROR_DOCUMENT_NOT_CACHED; } } if (NS_SUCCEEDED(aEntryStatus)) { mCacheEntry = aEntry; mCacheEntryIsWriteOnly = aNew; if (!aNew && !mAsyncOpenTime.IsNull()) { // We use microseconds for IO operations. For consistency let's use // microseconds here too. uint32_t duration = (TimeStamp::Now() - mAsyncOpenTime).ToMicroseconds(); bool isSlow = false; if ((mCacheOpenWithPriority && mCacheQueueSizeWhenOpen >= StaticPrefs:: network_http_rcwn_cache_queue_priority_threshold()) || (!mCacheOpenWithPriority && mCacheQueueSizeWhenOpen >= StaticPrefs::network_http_rcwn_cache_queue_normal_threshold())) { isSlow = true; } CacheFileUtils::CachePerfStats::AddValue( CacheFileUtils::CachePerfStats::ENTRY_OPEN, duration, isSlow); } if (mLoadFlags & LOAD_INITIAL_DOCUMENT_URI) { Telemetry::Accumulate(Telemetry::HTTP_OFFLINE_CACHE_DOCUMENT_LOAD, false); } } return NS_OK; } nsresult nsHttpChannel::OnOfflineCacheEntryAvailable( nsICacheEntry* aEntry, bool aNew, nsIApplicationCache* aAppCache, nsresult aEntryStatus) { MOZ_ASSERT(!mApplicationCache || aAppCache == mApplicationCache); MOZ_ASSERT(!aNew || !aEntry || mApplicationCacheForWrite); mCacheEntriesToWaitFor &= ~WAIT_FOR_CACHE_ENTRY; nsresult rv; if (NS_SUCCEEDED(aEntryStatus)) { if (!mApplicationCache) { mApplicationCache = aAppCache; } // We successfully opened an offline cache session and the entry, // so indicate we will load from the offline cache. mLoadedFromApplicationCache = true; mCacheEntryIsReadOnly = true; mCacheEntry = aEntry; mCacheEntryIsWriteOnly = false; if (mLoadFlags & LOAD_INITIAL_DOCUMENT_URI && !mApplicationCacheForWrite) { MaybeWarnAboutAppCache(); } return NS_OK; } if (!mApplicationCacheForWrite && !mFallbackChannel) { if (!mApplicationCache) { mApplicationCache = aAppCache; } // Check for namespace match. nsCOMPtr namespaceEntry; rv = mApplicationCache->GetMatchingNamespace( mSpec, getter_AddRefs(namespaceEntry)); NS_ENSURE_SUCCESS(rv, rv); uint32_t namespaceType = 0; if (!namespaceEntry || NS_FAILED(namespaceEntry->GetItemType(&namespaceType)) || (namespaceType & (nsIApplicationCacheNamespace::NAMESPACE_FALLBACK | nsIApplicationCacheNamespace::NAMESPACE_BYPASS)) == 0) { // When loading from an application cache, only items // on the whitelist or matching a // fallback namespace should hit the network... mLoadFlags |= LOAD_ONLY_FROM_CACHE; // ... and if there were an application cache entry, // we would have found it earlier. return NS_ERROR_CACHE_KEY_NOT_FOUND; } if (namespaceType & nsIApplicationCacheNamespace::NAMESPACE_FALLBACK) { nsAutoCString namespaceSpec; rv = namespaceEntry->GetNamespaceSpec(namespaceSpec); NS_ENSURE_SUCCESS(rv, rv); // This prevents fallback attacks injected by an insecure subdirectory // for the whole origin (or a parent directory). if (!IsInSubpathOfAppCacheManifest(mApplicationCache, namespaceSpec)) { return NS_OK; } rv = namespaceEntry->GetData(mFallbackKey); NS_ENSURE_SUCCESS(rv, rv); } if (namespaceType & nsIApplicationCacheNamespace::NAMESPACE_BYPASS) { LOG( ("nsHttpChannel::OnOfflineCacheEntryAvailable this=%p, URL matches " "NETWORK," " looking for a regular cache entry", this)); bool isHttps = mURI->SchemeIs("https"); rv = OpenCacheEntryInternal(isHttps, nullptr, false /* don't allow appcache lookups */); if (NS_FAILED(rv)) { // Don't let this fail when cache entry can't be synchronously open. // We want to go forward even without a regular cache entry. return NS_OK; } } } return NS_OK; } nsresult nsHttpChannel::OnOfflineCacheEntryForWritingAvailable( nsICacheEntry* aEntry, nsIApplicationCache* aAppCache, nsresult aEntryStatus) { MOZ_ASSERT(mApplicationCacheForWrite && aAppCache == mApplicationCacheForWrite); mCacheEntriesToWaitFor &= ~WAIT_FOR_OFFLINE_CACHE_ENTRY; if (NS_SUCCEEDED(aEntryStatus)) { mOfflineCacheEntry = aEntry; if (NS_FAILED(aEntry->GetLastModified(&mOfflineCacheLastModifiedTime))) { mOfflineCacheLastModifiedTime = 0; } } return aEntryStatus; } // Generates the proper cache-key for this instance of nsHttpChannel nsresult nsHttpChannel::GenerateCacheKey(uint32_t postID, nsACString& cacheKey) { AssembleCacheKey(mFallbackChannel ? mFallbackKey.get() : mSpec.get(), postID, cacheKey); return NS_OK; } // Assembles a cache-key from the given pieces of information and |mLoadFlags| void nsHttpChannel::AssembleCacheKey(const char* spec, uint32_t postID, nsACString& cacheKey) { cacheKey.Truncate(); if (mLoadFlags & LOAD_ANONYMOUS) { cacheKey.AssignLiteral("anon&"); } if (postID) { char buf[32]; SprintfLiteral(buf, "id=%x&", postID); cacheKey.Append(buf); } if (!cacheKey.IsEmpty()) { cacheKey.AppendLiteral("uri="); } // Strip any trailing #ref from the URL before using it as the key const char* p = strchr(spec, '#'); if (p) cacheKey.Append(spec, p - spec); else cacheKey.Append(spec); } nsresult DoUpdateExpirationTime(nsHttpChannel* aSelf, nsICacheEntry* aCacheEntry, nsHttpResponseHead* aResponseHead, uint32_t& aExpirationTime) { MOZ_ASSERT(aExpirationTime == 0); NS_ENSURE_TRUE(aResponseHead, NS_ERROR_FAILURE); nsresult rv; if (!aResponseHead->MustValidate()) { // For stale-while-revalidate we use expiration time as the absolute base // for calculation of the stale window absolute end time. Hence, when the // entry may be served w/o revalidation, we need a non-zero value for the // expiration time. Let's set it to |now|, which basicly means "expired", // same as when set to 0. uint32_t now = NowInSeconds(); aExpirationTime = now; uint32_t freshnessLifetime = 0; rv = aResponseHead->ComputeFreshnessLifetime(&freshnessLifetime); if (NS_FAILED(rv)) return rv; if (freshnessLifetime > 0) { uint32_t currentAge = 0; rv = aResponseHead->ComputeCurrentAge(now, aSelf->GetRequestTime(), ¤tAge); if (NS_FAILED(rv)) return rv; LOG(("freshnessLifetime = %u, currentAge = %u\n", freshnessLifetime, currentAge)); if (freshnessLifetime > currentAge) { uint32_t timeRemaining = freshnessLifetime - currentAge; // be careful... now + timeRemaining may overflow if (now + timeRemaining < now) { aExpirationTime = uint32_t(-1); } else { aExpirationTime = now + timeRemaining; } } } } rv = aCacheEntry->SetExpirationTime(aExpirationTime); NS_ENSURE_SUCCESS(rv, rv); return rv; } // UpdateExpirationTime is called when a new response comes in from the server. // It updates the stored response-time and sets the expiration time on the // cache entry. // // From section 13.2.4 of RFC2616, we compute expiration time as follows: // // timeRemaining = freshnessLifetime - currentAge // expirationTime = now + timeRemaining // nsresult nsHttpChannel::UpdateExpirationTime() { uint32_t expirationTime = 0; nsresult rv = DoUpdateExpirationTime(this, mCacheEntry, mResponseHead.get(), expirationTime); NS_ENSURE_SUCCESS(rv, rv); if (mOfflineCacheEntry) { rv = mOfflineCacheEntry->SetExpirationTime(expirationTime); NS_ENSURE_SUCCESS(rv, rv); } return NS_OK; } bool nsHttpChannel::ShouldUpdateOfflineCacheEntry() { if (!mApplicationCacheForWrite || !mOfflineCacheEntry) { return false; } // if we're updating the cache entry, update the offline cache entry too if (mCacheEntry && mCacheEntryIsWriteOnly) { return true; } // if there's nothing in the offline cache, add it if (mOfflineCacheEntry) { return true; } // if the document is newer than the offline entry, update it uint32_t docLastModifiedTime; nsresult rv = mResponseHead->GetLastModifiedValue(&docLastModifiedTime); if (NS_FAILED(rv)) { return true; } if (mOfflineCacheLastModifiedTime == 0) { return false; } if (docLastModifiedTime > mOfflineCacheLastModifiedTime) { return true; } return false; } nsresult nsHttpChannel::OpenCacheInputStream(nsICacheEntry* cacheEntry, bool startBuffering, bool checkingAppCacheEntry) { nsresult rv; if (mURI->SchemeIs("https")) { rv = cacheEntry->GetSecurityInfo(getter_AddRefs(mCachedSecurityInfo)); if (NS_FAILED(rv)) { LOG(("failed to parse security-info [channel=%p, entry=%p]", this, cacheEntry)); NS_WARNING("failed to parse security-info"); cacheEntry->AsyncDoom(nullptr); return rv; } // XXX: We should not be skilling this check in the offline cache // case, but we have to do so now to work around bug 794507. bool mustHaveSecurityInfo = !mLoadedFromApplicationCache && !checkingAppCacheEntry; MOZ_ASSERT(mCachedSecurityInfo || !mustHaveSecurityInfo); if (!mCachedSecurityInfo && mustHaveSecurityInfo) { LOG( ("mCacheEntry->GetSecurityInfo returned success but did not " "return the security info [channel=%p, entry=%p]", this, cacheEntry)); cacheEntry->AsyncDoom(nullptr); return NS_ERROR_UNEXPECTED; // XXX error code } } // Keep the conditions below in sync with the conditions in ReadFromCache. rv = NS_OK; if (WillRedirect(*mCachedResponseHead)) { // Do not even try to read the entity for a redirect because we do not // return an entity to the application when we process redirects. LOG(("Will skip read of cached redirect entity\n")); return NS_OK; } if ((mLoadFlags & nsICachingChannel::LOAD_ONLY_IF_MODIFIED) && !mCachedContentIsPartial) { // For LOAD_ONLY_IF_MODIFIED, we usually don't have to deal with the // cached entity. if (!mApplicationCacheForWrite) { LOG( ("Will skip read from cache based on LOAD_ONLY_IF_MODIFIED " "load flag\n")); return NS_OK; } // If offline caching has been requested and the offline cache needs // updating, we must complete the call even if the main cache entry // is up to date. We don't know yet for sure whether the offline // cache needs updating because at this point we haven't opened it // for writing yet, so we have to start reading the cached entity now // just in case. LOG( ("May skip read from cache based on LOAD_ONLY_IF_MODIFIED " "load flag\n")); } // Open an input stream for the entity, so that the call to OpenInputStream // happens off the main thread. nsCOMPtr stream; // If an alternate representation was requested, try to open the alt // input stream. // If the entry has a "is-from-child" metadata, then only open the altdata // stream if the consumer is also from child. bool altDataFromChild = false; { nsCString value; rv = cacheEntry->GetMetaDataElement("alt-data-from-child", getter_Copies(value)); altDataFromChild = !value.IsEmpty(); } nsAutoCString altDataType; Unused << cacheEntry->GetAltDataType(altDataType); nsAutoCString contentType; mCachedResponseHead->ContentType(contentType); bool foundAltData = false; bool deliverAltData = true; if (!mDisableAltDataCache && !altDataType.IsEmpty() && !mPreferredCachedAltDataTypes.IsEmpty() && altDataFromChild == mAltDataForChild) { for (auto& pref : mPreferredCachedAltDataTypes) { if (pref.type() == altDataType && (pref.contentType().IsEmpty() || pref.contentType() == contentType)) { foundAltData = true; deliverAltData = pref.deliverAltData(); break; } } } nsCOMPtr altData; int64_t altDataSize = -1; if (foundAltData) { rv = cacheEntry->OpenAlternativeInputStream(altDataType, getter_AddRefs(altData)); if (NS_SUCCEEDED(rv)) { // We have succeeded. mAvailableCachedAltDataType = altDataType; mDeliveringAltData = deliverAltData; // Set the correct data size on the channel. Unused << cacheEntry->GetAltDataSize(&altDataSize); mAltDataLength = altDataSize; LOG(("Opened alt-data input stream [type=%s, size=%" PRId64 ", deliverAltData=%d]", altDataType.get(), mAltDataLength, deliverAltData)); if (deliverAltData) { stream = altData; } } } if (!stream) { rv = cacheEntry->OpenInputStream(0, getter_AddRefs(stream)); } if (NS_FAILED(rv)) { LOG( ("Failed to open cache input stream [channel=%p, " "mCacheEntry=%p]", this, cacheEntry)); return rv; } if (startBuffering) { bool nonBlocking; rv = stream->IsNonBlocking(&nonBlocking); if (NS_SUCCEEDED(rv) && nonBlocking) startBuffering = false; } if (!startBuffering) { // Bypass wrapping the input stream for the new cache back-end since // nsIStreamTransportService expects a blocking stream. Preloading of // the data must be done on the level of the cache backend, internally. // // We do not connect the stream to the stream transport service if we // have to validate the entry with the server. If we did, we would get // into a race condition between the stream transport service reading // the existing contents and the opening of the cache entry's output // stream to write the new contents in the case where we get a non-304 // response. LOG( ("Opened cache input stream without buffering [channel=%p, " "mCacheEntry=%p, stream=%p]", this, cacheEntry, stream.get())); mCacheInputStream.takeOver(stream); return rv; } // Have the stream transport service start reading the entity on one of its // background threads. nsCOMPtr transport; nsCOMPtr wrapper; nsCOMPtr sts( services::GetStreamTransportService()); rv = sts ? NS_OK : NS_ERROR_NOT_AVAILABLE; if (NS_SUCCEEDED(rv)) { rv = sts->CreateInputTransport(stream, true, getter_AddRefs(transport)); } if (NS_SUCCEEDED(rv)) { rv = transport->OpenInputStream(0, 0, 0, getter_AddRefs(wrapper)); } if (NS_SUCCEEDED(rv)) { LOG( ("Opened cache input stream [channel=%p, wrapper=%p, " "transport=%p, stream=%p]", this, wrapper.get(), transport.get(), stream.get())); } else { LOG( ("Failed to open cache input stream [channel=%p, " "wrapper=%p, transport=%p, stream=%p]", this, wrapper.get(), transport.get(), stream.get())); stream->Close(); return rv; } mCacheInputStream.takeOver(wrapper); return NS_OK; } // Actually process the cached response that we started to handle in CheckCache // and/or StartBufferingCachedEntity. nsresult nsHttpChannel::ReadFromCache(bool alreadyMarkedValid) { NS_ENSURE_TRUE(mCacheEntry, NS_ERROR_FAILURE); NS_ENSURE_TRUE(mCachedContentIsValid, NS_ERROR_FAILURE); NS_ENSURE_TRUE(!mCachePump, NS_OK); // already opened LOG( ("nsHttpChannel::ReadFromCache [this=%p] " "Using cached copy of: %s\n", this, mSpec.get())); // When racing the cache with the network with a timer, and we get data from // the cache, we should prevent the timer from triggering a network request. if (mNetworkTriggerTimer) { mNetworkTriggerTimer->Cancel(); mNetworkTriggerTimer = nullptr; } if (mRaceCacheWithNetwork) { MOZ_ASSERT(mFirstResponseSource != RESPONSE_FROM_CACHE); if (mFirstResponseSource == RESPONSE_PENDING) { LOG(("First response from cache\n")); mFirstResponseSource = RESPONSE_FROM_CACHE; // Cancel the transaction because we will serve the request from the cache CancelNetworkRequest(NS_BINDING_ABORTED); if (mTransactionPump && mSuspendCount) { uint32_t suspendCount = mSuspendCount; while (suspendCount--) { mTransactionPump->Resume(); } } mTransaction = nullptr; mTransactionPump = nullptr; } else { MOZ_ASSERT(mFirstResponseSource == RESPONSE_FROM_NETWORK); LOG( ("Skipping read from cache because first response was from " "network\n")); if (!mOnCacheEntryCheckTimestamp.IsNull()) { TimeStamp currentTime = TimeStamp::Now(); int64_t savedTime = (currentTime - mOnStartRequestTimestamp).ToMilliseconds(); Telemetry::Accumulate( Telemetry::NETWORK_RACE_CACHE_WITH_NETWORK_SAVED_TIME, savedTime); int64_t diffTime = (currentTime - mOnCacheEntryCheckTimestamp).ToMilliseconds(); Telemetry::Accumulate( Telemetry::NETWORK_RACE_CACHE_WITH_NETWORK_OCEC_ON_START_DIFF, diffTime); } return NS_OK; } } if (mCachedResponseHead) mResponseHead = std::move(mCachedResponseHead); UpdateInhibitPersistentCachingFlag(); // if we don't already have security info, try to get it from the cache // entry. there are two cases to consider here: 1) we are just reading // from the cache, or 2) this may be due to a 304 not modified response, // in which case we could have security info from a socket transport. if (!mSecurityInfo) mSecurityInfo = mCachedSecurityInfo; if (!alreadyMarkedValid && !mCachedContentIsPartial) { // We validated the entry, and we have write access to the cache, so // mark the cache entry as valid in order to allow others access to // this cache entry. // // TODO: This should be done asynchronously so we don't take the cache // service lock on the main thread. mCacheEntry->MaybeMarkValid(); } nsresult rv; // Keep the conditions below in sync with the conditions in // StartBufferingCachedEntity. if (WillRedirect(*mResponseHead)) { // TODO: Bug 759040 - We should call HandleAsyncRedirect directly here, // to avoid event dispatching latency. MOZ_ASSERT(!mCacheInputStream); LOG(("Skipping skip read of cached redirect entity\n")); return AsyncCall(&nsHttpChannel::HandleAsyncRedirect); } if ((mLoadFlags & LOAD_ONLY_IF_MODIFIED) && !mCachedContentIsPartial) { if (!mApplicationCacheForWrite) { LOG( ("Skipping read from cache based on LOAD_ONLY_IF_MODIFIED " "load flag\n")); MOZ_ASSERT(!mCacheInputStream); // TODO: Bug 759040 - We should call HandleAsyncNotModified directly // here, to avoid event dispatching latency. return AsyncCall(&nsHttpChannel::HandleAsyncNotModified); } if (!ShouldUpdateOfflineCacheEntry()) { LOG( ("Skipping read from cache based on LOAD_ONLY_IF_MODIFIED " "load flag (mApplicationCacheForWrite not null case)\n")); mCacheInputStream.CloseAndRelease(); // TODO: Bug 759040 - We should call HandleAsyncNotModified directly // here, to avoid event dispatching latency. return AsyncCall(&nsHttpChannel::HandleAsyncNotModified); } } MOZ_ASSERT(mCacheInputStream); if (!mCacheInputStream) { NS_ERROR( "mCacheInputStream is null but we're expecting to " "be able to read from it."); return NS_ERROR_UNEXPECTED; } nsCOMPtr inputStream = mCacheInputStream.forget(); rv = nsInputStreamPump::Create(getter_AddRefs(mCachePump), inputStream, 0, 0, true); if (NS_FAILED(rv)) { inputStream->Close(); return rv; } rv = mCachePump->AsyncRead(this); if (NS_FAILED(rv)) return rv; if (mTimingEnabled) mCacheReadStart = TimeStamp::Now(); uint32_t suspendCount = mSuspendCount; if (mAsyncResumePending) { LOG( (" Suspend()'ing cache pump once because of async resume pending" ", sc=%u, pump=%p, this=%p", suspendCount, mCachePump.get(), this)); ++suspendCount; } while (suspendCount--) { mCachePump->Suspend(); } return NS_OK; } void nsHttpChannel::CloseCacheEntry(bool doomOnFailure) { mCacheInputStream.CloseAndRelease(); if (!mCacheEntry) return; LOG(("nsHttpChannel::CloseCacheEntry [this=%p] mStatus=%" PRIx32 " mCacheEntryIsWriteOnly=%x", this, static_cast(static_cast(mStatus)), mCacheEntryIsWriteOnly)); // If we have begun to create or replace a cache entry, and that cache // entry is not complete and not resumable, then it needs to be doomed. // Otherwise, CheckCache will make the mistake of thinking that the // partial cache entry is complete. bool doom = false; if (mInitedCacheEntry) { MOZ_ASSERT(mResponseHead, "oops"); if (NS_FAILED(mStatus) && doomOnFailure && mCacheEntryIsWriteOnly && !mResponseHead->IsResumable()) doom = true; } else if (mCacheEntryIsWriteOnly) doom = true; if (doom) { LOG((" dooming cache entry!!")); mCacheEntry->AsyncDoom(nullptr); } else { // Store updated security info, makes cached EV status race less likely // (see bug 1040086) if (mSecurityInfo) mCacheEntry->SetSecurityInfo(mSecurityInfo); } mCachedResponseHead = nullptr; mCachePump = nullptr; // This releases the entry for other consumers to use. // We call Dismiss() in case someone still keeps a reference // to this entry handle. mCacheEntry->Dismiss(); mCacheEntry = nullptr; mCacheEntryIsWriteOnly = false; mInitedCacheEntry = false; } void nsHttpChannel::CloseOfflineCacheEntry() { if (!mOfflineCacheEntry) return; LOG(("nsHttpChannel::CloseOfflineCacheEntry [this=%p]", this)); if (NS_FAILED(mStatus)) { mOfflineCacheEntry->AsyncDoom(nullptr); } else { bool succeeded; if (NS_SUCCEEDED(GetRequestSucceeded(&succeeded)) && !succeeded) mOfflineCacheEntry->AsyncDoom(nullptr); } mOfflineCacheEntry = nullptr; } void nsHttpChannel::MaybeCreateCacheEntryWhenRCWN() { mozilla::MutexAutoLock lock(mRCWNLock); // Create cache entry for writing only when we're racing cache with network // and we don't have the entry because network won. if (mCacheEntry || !mRaceCacheWithNetwork || mFirstResponseSource != RESPONSE_FROM_NETWORK || mCacheEntryIsReadOnly) { return; } LOG(("nsHttpChannel::MaybeCreateCacheEntryWhenRCWN [this=%p]", this)); nsCOMPtr cacheStorageService( services::GetCacheStorageService()); if (!cacheStorageService) { return; } nsCOMPtr cacheStorage; RefPtr info = GetLoadContextInfo(this); Unused << cacheStorageService->DiskCacheStorage(info, false, getter_AddRefs(cacheStorage)); if (!cacheStorage) { return; } Unused << cacheStorage->OpenTruncate(mCacheEntryURI, mCacheIdExtension, getter_AddRefs(mCacheEntry)); LOG((" created entry %p", mCacheEntry.get())); if (AwaitingCacheCallbacks()) { // Setting mIgnoreCacheEntry to true ensures that we won't close this // write-only entry in OnCacheEntryAvailable() if this method was called // after OnCacheEntryCheck(). mIgnoreCacheEntry = true; } mAvailableCachedAltDataType.Truncate(); mDeliveringAltData = false; mAltDataLength = -1; mCacheInputStream.CloseAndRelease(); mCachedContentIsValid = false; } // Initialize the cache entry for writing. // - finalize storage policy // - store security info // - update expiration time // - store headers and other meta data nsresult nsHttpChannel::InitCacheEntry() { nsresult rv; NS_ENSURE_TRUE(mCacheEntry, NS_ERROR_UNEXPECTED); // if only reading, nothing to be done here. if (mCacheEntryIsReadOnly) return NS_OK; // Don't cache the response again if already cached... if (mCachedContentIsValid) return NS_OK; LOG(("nsHttpChannel::InitCacheEntry [this=%p entry=%p]\n", this, mCacheEntry.get())); bool recreate = !mCacheEntryIsWriteOnly; bool dontPersist = mLoadFlags & INHIBIT_PERSISTENT_CACHING; if (!recreate && dontPersist) { // If the current entry is persistent but we inhibit peristence // then force recreation of the entry as memory/only. rv = mCacheEntry->GetPersistent(&recreate); if (NS_FAILED(rv)) return rv; } if (recreate) { LOG( (" we have a ready entry, but reading it again from the server -> " "recreating cache entry\n")); // clean the altData cache and reset this to avoid wrong content length mAvailableCachedAltDataType.Truncate(); mDeliveringAltData = false; nsCOMPtr currentEntry; currentEntry.swap(mCacheEntry); rv = currentEntry->Recreate(dontPersist, getter_AddRefs(mCacheEntry)); if (NS_FAILED(rv)) { LOG((" recreation failed, the response will not be cached")); return NS_OK; } mCacheEntryIsWriteOnly = true; } // Set the expiration time for this cache entry rv = UpdateExpirationTime(); if (NS_FAILED(rv)) return rv; // mark this weakly framed until a response body is seen mCacheEntry->SetMetaDataElement("strongly-framed", "0"); rv = AddCacheEntryHeaders(mCacheEntry); if (NS_FAILED(rv)) return rv; mInitedCacheEntry = true; // Don't perform the check when writing (doesn't make sense) mConcurrentCacheAccess = 0; return NS_OK; } void nsHttpChannel::UpdateInhibitPersistentCachingFlag() { // The no-store directive within the 'Cache-Control:' header indicates // that we must not store the response in a persistent cache. if (mResponseHead->NoStore()) mLoadFlags |= INHIBIT_PERSISTENT_CACHING; // Only cache SSL content on disk if the pref is set if (!gHttpHandler->IsPersistentHttpsCachingEnabled() && mURI->SchemeIs("https")) { mLoadFlags |= INHIBIT_PERSISTENT_CACHING; } } nsresult nsHttpChannel::InitOfflineCacheEntry() { // This function can be called even when we fail to connect (bug 551990) if (!mOfflineCacheEntry) { return NS_OK; } if (!mResponseHead || mResponseHead->NoStore()) { if (mResponseHead && mResponseHead->NoStore()) { mOfflineCacheEntry->AsyncDoom(nullptr); } CloseOfflineCacheEntry(); if (mResponseHead && mResponseHead->NoStore()) { return NS_ERROR_NOT_AVAILABLE; } return NS_OK; } // This entry's expiration time should match the main entry's expiration // time. UpdateExpirationTime() will keep it in sync once the offline // cache entry has been created. if (mCacheEntry) { uint32_t expirationTime; nsresult rv = mCacheEntry->GetExpirationTime(&expirationTime); NS_ENSURE_SUCCESS(rv, rv); mOfflineCacheEntry->SetExpirationTime(expirationTime); } return AddCacheEntryHeaders(mOfflineCacheEntry); } nsresult DoAddCacheEntryHeaders(nsHttpChannel* self, nsICacheEntry* entry, nsHttpRequestHead* requestHead, nsHttpResponseHead* responseHead, nsISupports* securityInfo) { nsresult rv; LOG(("nsHttpChannel::AddCacheEntryHeaders [this=%p] begin", self)); // Store secure data in memory only if (securityInfo) entry->SetSecurityInfo(securityInfo); // Store the HTTP request method with the cache entry so we can distinguish // for example GET and HEAD responses. nsAutoCString method; requestHead->Method(method); rv = entry->SetMetaDataElement("request-method", method.get()); if (NS_FAILED(rv)) return rv; // Store the HTTP authorization scheme used if any... rv = StoreAuthorizationMetaData(entry, requestHead); if (NS_FAILED(rv)) return rv; // Iterate over the headers listed in the Vary response header, and // store the value of the corresponding request header so we can verify // that it has not varied when we try to re-use the cached response at // a later time. Take care to store "Cookie" headers only as hashes // due to security considerations and the fact that they can be pretty // large (bug 468426). We take care of "Vary: cookie" in ResponseWouldVary. // // NOTE: if "Vary: accept, cookie", then we will store the "accept" header // in the cache. we could try to avoid needlessly storing the "accept" // header in this case, but it doesn't seem worth the extra code to perform // the check. { nsAutoCString buf, metaKey; Unused << responseHead->GetHeader(nsHttp::Vary, buf); if (!buf.IsEmpty()) { constexpr auto prefix = "request-"_ns; char* bufData = buf.BeginWriting(); // going to munge buf char* token = nsCRT::strtok(bufData, NS_HTTP_HEADER_SEPS, &bufData); while (token) { LOG( ("nsHttpChannel::AddCacheEntryHeaders [this=%p] " "processing %s", self, token)); if (*token != '*') { nsHttpAtom atom = nsHttp::ResolveAtom(token); nsAutoCString val; nsAutoCString hash; if (NS_SUCCEEDED(requestHead->GetHeader(atom, val))) { // If cookie-header, store a hash of the value if (atom == nsHttp::Cookie) { LOG( ("nsHttpChannel::AddCacheEntryHeaders [this=%p] " "cookie-value %s", self, val.get())); rv = Hash(val.get(), hash); // If hash failed, store a string not very likely // to be the result of subsequent hashes if (NS_FAILED(rv)) { val = ""_ns; } else { val = hash; } LOG((" hashed to %s\n", val.get())); } // build cache meta data key and set meta data element... metaKey = prefix + nsDependentCString(token); entry->SetMetaDataElement(metaKey.get(), val.get()); } else { LOG( ("nsHttpChannel::AddCacheEntryHeaders [this=%p] " "clearing metadata for %s", self, token)); metaKey = prefix + nsDependentCString(token); entry->SetMetaDataElement(metaKey.get(), nullptr); } } token = nsCRT::strtok(bufData, NS_HTTP_HEADER_SEPS, &bufData); } } } // Store the received HTTP head with the cache entry as an element of // the meta data. nsAutoCString head; responseHead->Flatten(head, true); rv = entry->SetMetaDataElement("response-head", head.get()); if (NS_FAILED(rv)) return rv; head.Truncate(); responseHead->FlattenNetworkOriginalHeaders(head); rv = entry->SetMetaDataElement("original-response-headers", head.get()); if (NS_FAILED(rv)) return rv; // Indicate we have successfully finished setting metadata on the cache entry. rv = entry->MetaDataReady(); return rv; } nsresult nsHttpChannel::AddCacheEntryHeaders(nsICacheEntry* entry) { return DoAddCacheEntryHeaders(this, entry, &mRequestHead, mResponseHead.get(), mSecurityInfo); } inline void GetAuthType(const char* challenge, nsCString& authType) { const char* p; // get the challenge type if ((p = strchr(challenge, ' ')) != nullptr) authType.Assign(challenge, p - challenge); else authType.Assign(challenge); } nsresult StoreAuthorizationMetaData(nsICacheEntry* entry, nsHttpRequestHead* requestHead) { // Not applicable to proxy authorization... nsAutoCString val; if (NS_FAILED(requestHead->GetHeader(nsHttp::Authorization, val))) { return NS_OK; } // eg. [Basic realm="wally world"] nsAutoCString buf; GetAuthType(val.get(), buf); return entry->SetMetaDataElement("auth", buf.get()); } // Finalize the cache entry // - may need to rewrite response headers if any headers changed // - may need to recalculate the expiration time if any headers changed // - called only for freshly written cache entries nsresult nsHttpChannel::FinalizeCacheEntry() { LOG(("nsHttpChannel::FinalizeCacheEntry [this=%p]\n", this)); // Don't update this meta-data on 304 if (mStronglyFramed && !mCachedContentIsValid && mCacheEntry) { LOG(("nsHttpChannel::FinalizeCacheEntry [this=%p] Is Strongly Framed\n", this)); mCacheEntry->SetMetaDataElement("strongly-framed", "1"); } if (mResponseHead && mResponseHeadersModified) { // Set the expiration time for this cache entry nsresult rv = UpdateExpirationTime(); if (NS_FAILED(rv)) return rv; } return NS_OK; } // Open an output stream to the cache entry and insert a listener tee into // the chain of response listeners. nsresult nsHttpChannel::InstallCacheListener(int64_t offset) { nsresult rv; LOG(("Preparing to write data into the cache [uri=%s]\n", mSpec.get())); MOZ_ASSERT(mCacheEntry); MOZ_ASSERT(mCacheEntryIsWriteOnly || mCachedContentIsPartial || mRaceCacheWithNetwork); MOZ_ASSERT(mListener); nsAutoCString contentEncoding, contentType; Unused << mResponseHead->GetHeader(nsHttp::Content_Encoding, contentEncoding); mResponseHead->ContentType(contentType); // If the content is compressible and the server has not compressed it, // mark the cache entry for compression. if (contentEncoding.IsEmpty() && (contentType.EqualsLiteral(TEXT_HTML) || contentType.EqualsLiteral(TEXT_PLAIN) || contentType.EqualsLiteral(TEXT_CSS) || contentType.EqualsLiteral(TEXT_JAVASCRIPT) || contentType.EqualsLiteral(TEXT_ECMASCRIPT) || contentType.EqualsLiteral(TEXT_XML) || contentType.EqualsLiteral(APPLICATION_JAVASCRIPT) || contentType.EqualsLiteral(APPLICATION_ECMASCRIPT) || contentType.EqualsLiteral(APPLICATION_XJAVASCRIPT) || contentType.EqualsLiteral(APPLICATION_XHTML_XML))) { rv = mCacheEntry->SetMetaDataElement("uncompressed-len", "0"); if (NS_FAILED(rv)) { LOG(("unable to mark cache entry for compression")); } } LOG(("Trading cache input stream for output stream [channel=%p]", this)); // We must close the input stream first because cache entries do not // correctly handle having an output stream and input streams open at // the same time. mCacheInputStream.CloseAndRelease(); int64_t predictedSize = mResponseHead->TotalEntitySize(); if (predictedSize != -1) { predictedSize -= offset; } nsCOMPtr out; rv = mCacheEntry->OpenOutputStream(offset, predictedSize, getter_AddRefs(out)); if (rv == NS_ERROR_NOT_AVAILABLE) { LOG((" entry doomed, not writing it [channel=%p]", this)); // Entry is already doomed. // This may happen when expiration time is set to past and the entry // has been removed by the background eviction logic. return NS_OK; } if (rv == NS_ERROR_FILE_TOO_BIG) { LOG((" entry would exceed max allowed size, not writing it [channel=%p]", this)); mCacheEntry->AsyncDoom(nullptr); return NS_OK; } if (NS_FAILED(rv)) return rv; if (mCacheOnlyMetadata) { LOG(("Not storing content, cacheOnlyMetadata set")); // We must open and then close the output stream of the cache entry. // This way we indicate the content has been written (despite with zero // length) and the entry is now in the ready state with "having data". out->Close(); return NS_OK; } // XXX disk cache does not support overlapped i/o yet #if 0 // Mark entry valid inorder to allow simultaneous reading... rv = mCacheEntry->MarkValid(); if (NS_FAILED(rv)) return rv; #endif nsCOMPtr tee = do_CreateInstance(kStreamListenerTeeCID, &rv); if (NS_FAILED(rv)) return rv; LOG(("nsHttpChannel::InstallCacheListener sync tee %p rv=%" PRIx32, tee.get(), static_cast(rv))); rv = tee->Init(mListener, out, nullptr); if (NS_FAILED(rv)) return rv; mListener = tee; return NS_OK; } nsresult nsHttpChannel::InstallOfflineCacheListener(int64_t offset) { nsresult rv; LOG(("Preparing to write data into the offline cache [uri=%s]\n", mSpec.get())); MOZ_ASSERT(mOfflineCacheEntry); MOZ_ASSERT(mListener); nsCOMPtr out; rv = mOfflineCacheEntry->OpenOutputStream(offset, -1, getter_AddRefs(out)); if (NS_FAILED(rv)) return rv; nsCOMPtr tee = do_CreateInstance(kStreamListenerTeeCID, &rv); if (NS_FAILED(rv)) return rv; rv = tee->Init(mListener, out, nullptr); if (NS_FAILED(rv)) return rv; mListener = tee; return NS_OK; } void nsHttpChannel::ClearBogusContentEncodingIfNeeded() { // For .gz files, apache sends both a Content-Type: application/x-gzip // as well as Content-Encoding: gzip, which is completely wrong. In // this case, we choose to ignore the rogue Content-Encoding header. We // must do this early on so as to prevent it from being seen up stream. // The same problem exists for Content-Encoding: compress in default // Apache installs. nsAutoCString contentType; mResponseHead->ContentType(contentType); if (mResponseHead->HasHeaderValue(nsHttp::Content_Encoding, "gzip") && (contentType.EqualsLiteral(APPLICATION_GZIP) || contentType.EqualsLiteral(APPLICATION_GZIP2) || contentType.EqualsLiteral(APPLICATION_GZIP3))) { // clear the Content-Encoding header mResponseHead->ClearHeader(nsHttp::Content_Encoding); } else if (mResponseHead->HasHeaderValue(nsHttp::Content_Encoding, "compress") && (contentType.EqualsLiteral(APPLICATION_COMPRESS) || contentType.EqualsLiteral(APPLICATION_COMPRESS2))) { // clear the Content-Encoding header mResponseHead->ClearHeader(nsHttp::Content_Encoding); } } //----------------------------------------------------------------------------- // nsHttpChannel //----------------------------------------------------------------------------- nsresult nsHttpChannel::SetupReplacementChannel(nsIURI* newURI, nsIChannel* newChannel, bool preserveMethod, uint32_t redirectFlags) { LOG( ("nsHttpChannel::SetupReplacementChannel " "[this=%p newChannel=%p preserveMethod=%d]", this, newChannel, preserveMethod)); nsresult rv = HttpBaseChannel::SetupReplacementChannel( newURI, newChannel, preserveMethod, redirectFlags); if (NS_FAILED(rv)) return rv; rv = CheckRedirectLimit(redirectFlags); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr httpChannel = do_QueryInterface(newChannel); if (!httpChannel) return NS_OK; // no other options to set // convey the mApplyConversion flag (bug 91862) nsCOMPtr encodedChannel = do_QueryInterface(httpChannel); if (encodedChannel) encodedChannel->SetApplyConversion(mApplyConversion); // transfer the resume information if (mResuming) { nsCOMPtr resumableChannel( do_QueryInterface(newChannel)); if (!resumableChannel) { NS_WARNING( "Got asked to resume, but redirected to non-resumable channel!"); return NS_ERROR_NOT_RESUMABLE; } resumableChannel->ResumeAt(mStartPos, mEntityID); } nsCOMPtr internalChannel = do_QueryInterface(newChannel, &rv); if (NS_SUCCEEDED(rv)) { TimeStamp timestamp; rv = GetNavigationStartTimeStamp(×tamp); if (NS_WARN_IF(NS_FAILED(rv))) { return rv; } if (timestamp) { Unused << internalChannel->SetNavigationStartTimeStamp(timestamp); } } return NS_OK; } nsresult nsHttpChannel::AsyncProcessRedirection(uint32_t redirectType) { LOG(("nsHttpChannel::AsyncProcessRedirection [this=%p type=%u]\n", this, redirectType)); nsAutoCString location; // if a location header was not given, then we can't perform the redirect, // so just carry on as though this were a normal response. if (NS_FAILED(mResponseHead->GetHeader(nsHttp::Location, location))) return NS_ERROR_FAILURE; // If we were told to not follow redirects automatically, then again // carry on as though this were a normal response. if (mLoadInfo->GetDontFollowRedirects()) { return NS_ERROR_FAILURE; } // make sure non-ASCII characters in the location header are escaped. nsAutoCString locationBuf; if (NS_EscapeURL(location.get(), -1, esc_OnlyNonASCII | esc_Spaces, locationBuf)) location = locationBuf; mRedirectType = redirectType; LOG(("redirecting to: %s [redirection-limit=%u]\n", location.get(), uint32_t(mRedirectionLimit))); nsresult rv = CreateNewURI(location.get(), getter_AddRefs(mRedirectURI)); if (NS_FAILED(rv)) { LOG(("Invalid URI for redirect: Location: %s\n", location.get())); return NS_ERROR_CORRUPTED_CONTENT; } if (mApplicationCache) { // if we are redirected to a different origin check if there is a fallback // cache entry to fall back to. we don't care about file strict // checking, at least mURI is not a file URI. if (!NS_SecurityCompareURIs(mURI, mRedirectURI, false)) { PushRedirectAsyncFunc( &nsHttpChannel::ContinueProcessRedirectionAfterFallback); bool waitingForRedirectCallback; Unused << ProcessFallback(&waitingForRedirectCallback); if (waitingForRedirectCallback) return NS_OK; PopRedirectAsyncFunc( &nsHttpChannel::ContinueProcessRedirectionAfterFallback); } } return ContinueProcessRedirectionAfterFallback(NS_OK); } nsresult nsHttpChannel::ContinueProcessRedirectionAfterFallback(nsresult rv) { if (NS_SUCCEEDED(rv) && mFallingBack) { // do not continue with redirect processing, fallback is in // progress now. return NS_OK; } // Kill the current cache entry if we are redirecting // back to ourself. bool redirectingBackToSameURI = false; if (mCacheEntry && mCacheEntryIsWriteOnly && NS_SUCCEEDED(mURI->Equals(mRedirectURI, &redirectingBackToSameURI)) && redirectingBackToSameURI) mCacheEntry->AsyncDoom(nullptr); // move the reference of the old location to the new one if the new // one has none. PropagateReferenceIfNeeded(mURI, mRedirectURI); bool rewriteToGET = ShouldRewriteRedirectToGET(mRedirectType, mRequestHead.ParsedMethod()); // prompt if the method is not safe (such as POST, PUT, DELETE, ...) if (!rewriteToGET && !mRequestHead.IsSafeMethod()) { rv = PromptTempRedirect(); if (NS_FAILED(rv)) return rv; } #ifdef MOZ_GECKO_PROFILER if (profiler_can_accept_markers()) { nsAutoCString requestMethod; GetRequestMethod(requestMethod); int32_t priority = PRIORITY_NORMAL; GetPriority(&priority); TimingStruct timings; if (mTransaction) { timings = mTransaction->Timings(); } nsAutoCString contentType; if (mResponseHead) { mResponseHead->ContentType(contentType); } profiler_add_network_marker( mURI, requestMethod, priority, mChannelId, NetworkLoadType::LOAD_REDIRECT, mLastStatusReported, TimeStamp::Now(), mLogicalOffset, mCacheDisposition, mLoadInfo->GetInnerWindowID(), &timings, mRedirectURI, std::move(mSource), Some(nsDependentCString(contentType.get()))); } #endif nsCOMPtr ioService; rv = gHttpHandler->GetIOService(getter_AddRefs(ioService)); if (NS_FAILED(rv)) return rv; uint32_t redirectFlags; if (nsHttp::IsPermanentRedirect(mRedirectType)) redirectFlags = nsIChannelEventSink::REDIRECT_PERMANENT; else redirectFlags = nsIChannelEventSink::REDIRECT_TEMPORARY; nsCOMPtr newChannel; nsCOMPtr redirectLoadInfo = CloneLoadInfoForRedirect(mRedirectURI, redirectFlags); rv = NS_NewChannelInternal(getter_AddRefs(newChannel), mRedirectURI, redirectLoadInfo, nullptr, // PerformanceStorage nullptr, // aLoadGroup nullptr, // aCallbacks nsIRequest::LOAD_NORMAL, ioService); NS_ENSURE_SUCCESS(rv, rv); rv = SetupReplacementChannel(mRedirectURI, newChannel, !rewriteToGET, redirectFlags); if (NS_FAILED(rv)) return rv; // verify that this is a legal redirect mRedirectChannel = newChannel; PushRedirectAsyncFunc(&nsHttpChannel::ContinueProcessRedirection); rv = gHttpHandler->AsyncOnChannelRedirect(this, newChannel, redirectFlags); if (NS_SUCCEEDED(rv)) rv = WaitForRedirectCallback(); if (NS_FAILED(rv)) { AutoRedirectVetoNotifier notifier(this); PopRedirectAsyncFunc(&nsHttpChannel::ContinueProcessRedirection); } return rv; } nsresult nsHttpChannel::ContinueProcessRedirection(nsresult rv) { AutoRedirectVetoNotifier notifier(this); LOG(("nsHttpChannel::ContinueProcessRedirection [rv=%" PRIx32 ",this=%p]\n", static_cast(rv), this)); if (NS_FAILED(rv)) return rv; MOZ_ASSERT(mRedirectChannel, "No redirect channel?"); // Make sure to do this after we received redirect veto answer, // i.e. after all sinks had been notified mRedirectChannel->SetOriginalURI(mOriginalURI); // XXX we used to talk directly with the script security manager, but that // should really be handled by the event sink implementation. // begin loading the new channel rv = mRedirectChannel->AsyncOpen(mListener); LOG((" new channel AsyncOpen returned %" PRIX32, static_cast(rv))); NS_ENSURE_SUCCESS(rv, rv); // close down this channel Cancel(NS_BINDING_REDIRECTED); notifier.RedirectSucceeded(); ReleaseListeners(); return NS_OK; } //----------------------------------------------------------------------------- // nsHttpChannel //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::OnAuthAvailable() { LOG(("nsHttpChannel::OnAuthAvailable [this=%p]", this)); // setting mAuthRetryPending flag and resuming the transaction // triggers process of throwing away the unauthenticated data already // coming from the network mIsAuthChannel = true; mAuthRetryPending = true; mProxyAuthPending = false; LOG(("Resuming the transaction, we got credentials from user")); if (mTransactionPump) { mTransactionPump->Resume(); } return NS_OK; } NS_IMETHODIMP nsHttpChannel::OnAuthCancelled(bool userCancel) { LOG(("nsHttpChannel::OnAuthCancelled [this=%p]", this)); if (mTransactionPump) { // If the channel is trying to authenticate to a proxy and // that was canceled we cannot show the http response body // from the 40x as that might mislead the user into thinking // it was a end host response instead of a proxy reponse. // This must check explicitly whether a proxy auth was being done // because we do want to show the content if this is an error from // the origin server. if (mProxyAuthPending) Cancel(NS_ERROR_PROXY_CONNECTION_REFUSED); // ensure call of OnStartRequest of the current listener here, // it would not be called otherwise at all nsresult rv = CallOnStartRequest(); // drop mAuthRetryPending flag and resume the transaction // this resumes load of the unauthenticated content data (which // may have been canceled if we don't want to show it) mAuthRetryPending = false; LOG(("Resuming the transaction, user cancelled the auth dialog")); mTransactionPump->Resume(); if (NS_FAILED(rv)) mTransactionPump->Cancel(rv); } mProxyAuthPending = false; return NS_OK; } NS_IMETHODIMP nsHttpChannel::CloseStickyConnection() { LOG(("nsHttpChannel::CloseStickyConnection this=%p", this)); // Require we are between OnStartRequest and OnStopRequest, because // what we do here takes effect in OnStopRequest (not reusing the // connection for next authentication round). if (!mIsPending) { LOG((" channel not pending")); NS_ERROR( "CloseStickyConnection not called before OnStopRequest, won't have any " "effect"); return NS_ERROR_UNEXPECTED; } MOZ_ASSERT(mTransaction); if (!mTransaction) { return NS_ERROR_UNEXPECTED; } if (!(mCaps & NS_HTTP_STICKY_CONNECTION || mTransaction->HasStickyConnection())) { LOG((" not sticky")); return NS_OK; } mTransaction->DontReuseConnection(); return NS_OK; } NS_IMETHODIMP nsHttpChannel::ConnectionRestartable(bool aRestartable) { LOG(("nsHttpChannel::ConnectionRestartable this=%p, restartable=%d", this, aRestartable)); mAuthConnectionRestartable = aRestartable; return NS_OK; } //----------------------------------------------------------------------------- // nsHttpChannel::nsISupports //----------------------------------------------------------------------------- NS_IMPL_ADDREF_INHERITED(nsHttpChannel, HttpBaseChannel) NS_IMPL_RELEASE_INHERITED(nsHttpChannel, HttpBaseChannel) NS_INTERFACE_MAP_BEGIN(nsHttpChannel) NS_INTERFACE_MAP_ENTRY(nsIRequest) NS_INTERFACE_MAP_ENTRY(nsIChannel) NS_INTERFACE_MAP_ENTRY(nsIRequestObserver) NS_INTERFACE_MAP_ENTRY(nsIStreamListener) NS_INTERFACE_MAP_ENTRY(nsIHttpChannel) NS_INTERFACE_MAP_ENTRY(nsICacheInfoChannel) NS_INTERFACE_MAP_ENTRY(nsICachingChannel) NS_INTERFACE_MAP_ENTRY(nsIClassOfService) NS_INTERFACE_MAP_ENTRY(nsIUploadChannel) NS_INTERFACE_MAP_ENTRY(nsIFormPOSTActionChannel) NS_INTERFACE_MAP_ENTRY(nsIUploadChannel2) NS_INTERFACE_MAP_ENTRY(nsICacheEntryOpenCallback) NS_INTERFACE_MAP_ENTRY(nsIHttpChannelInternal) NS_INTERFACE_MAP_ENTRY(nsIResumableChannel) NS_INTERFACE_MAP_ENTRY(nsITransportEventSink) NS_INTERFACE_MAP_ENTRY(nsISupportsPriority) NS_INTERFACE_MAP_ENTRY(nsIProtocolProxyCallback) NS_INTERFACE_MAP_ENTRY(nsIProxiedChannel) NS_INTERFACE_MAP_ENTRY(nsIHttpAuthenticableChannel) NS_INTERFACE_MAP_ENTRY(nsIApplicationCacheContainer) NS_INTERFACE_MAP_ENTRY(nsIApplicationCacheChannel) NS_INTERFACE_MAP_ENTRY(nsIAsyncVerifyRedirectCallback) NS_INTERFACE_MAP_ENTRY(nsIThreadRetargetableRequest) NS_INTERFACE_MAP_ENTRY(nsIThreadRetargetableStreamListener) NS_INTERFACE_MAP_ENTRY(nsIDNSListener) NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference) NS_INTERFACE_MAP_ENTRY(nsICorsPreflightCallback) NS_INTERFACE_MAP_ENTRY(nsIRaceCacheWithNetwork) NS_INTERFACE_MAP_ENTRY(nsITimerCallback) NS_INTERFACE_MAP_ENTRY(nsIRequestTailUnblockCallback) NS_INTERFACE_MAP_ENTRY_CONCRETE(nsHttpChannel) NS_INTERFACE_MAP_END_INHERITING(HttpBaseChannel) //----------------------------------------------------------------------------- // nsHttpChannel::nsIRequest //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::Cancel(nsresult status) { MOZ_ASSERT(NS_IsMainThread()); // We should never have a pump open while a CORS preflight is in progress. MOZ_ASSERT_IF(mPreflightChannel, !mCachePump); #ifdef DEBUG // We want to perform this check only when the chanel is being cancelled the // first time with a URL classifier blocking error code. If mStatus is // already set to such an error code then Cancel() may be called for some // other reason, for example because we've received notification about our // parent process side channel being canceled, in which case we cannot expect // that CancelByURLClassifier() would have handled this case. if (UrlClassifierFeatureFactory::IsClassifierBlockingErrorCode(status) && !UrlClassifierFeatureFactory::IsClassifierBlockingErrorCode(mStatus)) { MOZ_CRASH_UNSAFE_PRINTF("Blocking classifier error %" PRIx32 " need to be handled by CancelByURLClassifier()", static_cast(status)); } #endif LOG(("nsHttpChannel::Cancel [this=%p status=%" PRIx32 "]\n", this, static_cast(status))); if (mCanceled) { LOG((" ignoring; already canceled\n")); return NS_OK; } LogCallingScriptLocation(this); if (mWaitingForRedirectCallback) { LOG(("channel canceled during wait for redirect callback")); } return CancelInternal(status); } NS_IMETHODIMP nsHttpChannel::CancelByURLClassifier(nsresult aErrorCode) { MOZ_ASSERT( UrlClassifierFeatureFactory::IsClassifierBlockingErrorCode(aErrorCode)); MOZ_ASSERT(NS_IsMainThread()); // We should never have a pump open while a CORS preflight is in progress. MOZ_ASSERT_IF(mPreflightChannel, !mCachePump); LOG(("nsHttpChannel::CancelByURLClassifier [this=%p]\n", this)); if (mCanceled) { LOG((" ignoring; already canceled\n")); return NS_OK; } // We are being canceled by the channel classifier because of tracking // protection, but we haven't yet had a chance to dispatch the // "http-on-modify-request" notifications yet (this would normally be // done in PrepareToConnect()). So do that now, before proceeding to // cancel. // // Note that running these observers can itself result in the channel // being canceled. In that case, we accept that cancelation code as // the cause of the cancelation, as if the classification of the channel // would have occurred past this point! // notify "http-on-modify-request" observers CallOnModifyRequestObservers(); // Check if request was cancelled during on-modify-request if (mCanceled) { return mStatus; } if (mSuspendCount) { LOG(("Waiting until resume in Cancel [this=%p]\n", this)); MOZ_ASSERT(!mCallOnResume); mChannelClassifierCancellationPending = 1; mCallOnResume = [aErrorCode](nsHttpChannel* self) { self->HandleContinueCancellingByURLClassifier(aErrorCode); return NS_OK; }; return NS_OK; } // Check to see if we should redirect this channel elsewhere by // nsIHttpChannel.redirectTo API request if (mAPIRedirectToURI) { mChannelClassifierCancellationPending = 1; return AsyncCall(&nsHttpChannel::HandleAsyncAPIRedirect); } return CancelInternal(aErrorCode); } void nsHttpChannel::ContinueCancellingByURLClassifier(nsresult aErrorCode) { MOZ_ASSERT( UrlClassifierFeatureFactory::IsClassifierBlockingErrorCode(aErrorCode)); MOZ_ASSERT(NS_IsMainThread()); // We should never have a pump open while a CORS preflight is in progress. MOZ_ASSERT_IF(mPreflightChannel, !mCachePump); LOG(("nsHttpChannel::ContinueCancellingByURLClassifier [this=%p]\n", this)); if (mCanceled) { LOG((" ignoring; already canceled\n")); return; } // Check to see if we should redirect this channel elsewhere by // nsIHttpChannel.redirectTo API request if (mAPIRedirectToURI) { Unused << AsyncCall(&nsHttpChannel::HandleAsyncAPIRedirect); return; } Unused << CancelInternal(aErrorCode); } nsresult nsHttpChannel::CancelInternal(nsresult status) { bool channelClassifierCancellationPending = !!mChannelClassifierCancellationPending; if (UrlClassifierFeatureFactory::IsClassifierBlockingErrorCode(status)) { mChannelClassifierCancellationPending = 0; } mCanceled = true; mStatus = status; if (mProxyRequest) mProxyRequest->Cancel(status); CancelNetworkRequest(status); mCacheInputStream.CloseAndRelease(); if (mCachePump) mCachePump->Cancel(status); if (mAuthProvider) mAuthProvider->Cancel(status); if (mPreflightChannel) mPreflightChannel->Cancel(status); if (mRequestContext && mOnTailUnblock) { mOnTailUnblock = nullptr; mRequestContext->CancelTailedRequest(this); CloseCacheEntry(false); Unused << AsyncAbort(status); } else if (channelClassifierCancellationPending) { // If we're coming from an asynchronous path when canceling a channel due // to safe-browsing protection, we need to AsyncAbort the channel now. Unused << AsyncAbort(status); } return NS_OK; } void nsHttpChannel::CancelNetworkRequest(nsresult aStatus) { if (mTransaction) { nsresult rv = gHttpHandler->CancelTransaction(mTransaction, aStatus); if (NS_FAILED(rv)) { LOG(("failed to cancel the transaction\n")); } } if (mTransactionPump) mTransactionPump->Cancel(aStatus); } NS_IMETHODIMP nsHttpChannel::Suspend() { NS_ENSURE_TRUE(mIsPending, NS_ERROR_NOT_AVAILABLE); LOG(("nsHttpChannel::SuspendInternal [this=%p]\n", this)); LogCallingScriptLocation(this); ++mSuspendCount; if (mSuspendCount == 1) { mSuspendTimestamp = TimeStamp::NowLoRes(); } nsresult rvTransaction = NS_OK; if (mTransactionPump) { rvTransaction = mTransactionPump->Suspend(); } nsresult rvCache = NS_OK; if (mCachePump) { rvCache = mCachePump->Suspend(); } return NS_FAILED(rvTransaction) ? rvTransaction : rvCache; } NS_IMETHODIMP nsHttpChannel::Resume() { NS_ENSURE_TRUE(mSuspendCount > 0, NS_ERROR_UNEXPECTED); LOG(("nsHttpChannel::ResumeInternal [this=%p]\n", this)); LogCallingScriptLocation(this); if (--mSuspendCount == 0) { mSuspendTotalTime += (TimeStamp::NowLoRes() - mSuspendTimestamp).ToMilliseconds(); if (mCallOnResume) { // Resume the interrupted procedure first, then resume // the pump to continue process the input stream. // Any newly created pump MUST be suspended to prevent calling // its OnStartRequest before OnStopRequest of any pre-existing // pump. mAsyncResumePending ensures that. MOZ_ASSERT(!mAsyncResumePending); mAsyncResumePending = 1; std::function callOnResume = nullptr; std::swap(callOnResume, mCallOnResume); RefPtr self(this); nsCOMPtr transactionPump = mTransactionPump; RefPtr cachePump = mCachePump; nsresult rv = NS_DispatchToCurrentThread(NS_NewRunnableFunction( "nsHttpChannel::CallOnResume", [callOnResume{std::move(callOnResume)}, self{std::move(self)}, transactionPump{std::move(transactionPump)}, cachePump{std::move(cachePump)}]() { MOZ_ASSERT(self->mAsyncResumePending); nsresult rv = self->CallOrWaitForResume(callOnResume); if (NS_FAILED(rv)) { self->CloseCacheEntry(false); Unused << self->AsyncAbort(rv); } MOZ_ASSERT(self->mAsyncResumePending); self->mAsyncResumePending = 0; // And now actually resume the previously existing pumps. if (transactionPump) { LOG( ("nsHttpChannel::CallOnResume resuming previous transaction " "pump %p, this=%p", transactionPump.get(), self.get())); transactionPump->Resume(); } if (cachePump) { LOG( ("nsHttpChannel::CallOnResume resuming previous cache pump " "%p, this=%p", cachePump.get(), self.get())); cachePump->Resume(); } // Any newly created pumps were suspended once because of // mAsyncResumePending. Problem is that the stream listener // notification is already pending in the queue right now, because // AsyncRead doesn't (regardless if called after Suspend) respect // the suspend coutner and the right order would not be preserved. // Hence, we do another dispatch round to actually Resume after // the notification from the original pump. if (transactionPump != self->mTransactionPump && self->mTransactionPump) { LOG( ("nsHttpChannel::CallOnResume async-resuming new " "transaction " "pump %p, this=%p", self->mTransactionPump.get(), self.get())); nsCOMPtr pump = self->mTransactionPump; NS_DispatchToCurrentThread(NS_NewRunnableFunction( "nsHttpChannel::CallOnResume new transaction", [pump{std::move(pump)}]() { pump->Resume(); })); } if (cachePump != self->mCachePump && self->mCachePump) { LOG( ("nsHttpChannel::CallOnResume async-resuming new cache pump " "%p, this=%p", self->mCachePump.get(), self.get())); RefPtr pump = self->mCachePump; NS_DispatchToCurrentThread(NS_NewRunnableFunction( "nsHttpChannel::CallOnResume new pump", [pump{std::move(pump)}]() { pump->Resume(); })); } })); NS_ENSURE_SUCCESS(rv, rv); return rv; } } nsresult rvTransaction = NS_OK; if (mTransactionPump) { rvTransaction = mTransactionPump->Resume(); } nsresult rvCache = NS_OK; if (mCachePump) { rvCache = mCachePump->Resume(); } return NS_FAILED(rvTransaction) ? rvTransaction : rvCache; } //----------------------------------------------------------------------------- // nsHttpChannel::nsIChannel //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::GetSecurityInfo(nsISupports** securityInfo) { NS_ENSURE_ARG_POINTER(securityInfo); *securityInfo = mSecurityInfo; NS_IF_ADDREF(*securityInfo); return NS_OK; } // If any of the functions that AsyncOpen calls returns immediately an error // AsyncAbort(which calls onStart/onStopRequest) does not need to be call. // To be sure that they are not call ReleaseListeners() is called. // If AsyncOpen returns NS_OK, after that point AsyncAbort must be called on // any error. NS_IMETHODIMP nsHttpChannel::AsyncOpen(nsIStreamListener* aListener) { nsCOMPtr listener = aListener; nsresult rv = nsContentSecurityManager::doContentSecurityCheck(this, listener); if (NS_WARN_IF(NS_FAILED(rv))) { ReleaseListeners(); return rv; } MOZ_ASSERT( mLoadInfo->GetSecurityMode() == 0 || mLoadInfo->GetInitialSecurityCheckDone() || (mLoadInfo->GetSecurityMode() == nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL && mLoadInfo->GetLoadingPrincipal() && mLoadInfo->GetLoadingPrincipal()->IsSystemPrincipal()), "security flags in loadInfo but doContentSecurityCheck() not called"); LOG(("nsHttpChannel::AsyncOpen [this=%p]\n", this)); LogCallingScriptLocation(this); #ifdef MOZ_TASK_TRACER if (tasktracer::IsStartLogging()) { uint64_t sourceEventId, parentTaskId; tasktracer::SourceEventType sourceEventType; GetCurTraceInfo(&sourceEventId, &parentTaskId, &sourceEventType); nsAutoCString urispec; mURI->GetSpec(urispec); tasktracer::AddLabel("nsHttpChannel::AsyncOpen %s", urispec.get()); } #endif #ifdef MOZ_GECKO_PROFILER mLastStatusReported = TimeStamp::Now(); // in case we enable the profiler after AsyncOpen() if (profiler_can_accept_markers()) { nsAutoCString requestMethod; GetRequestMethod(requestMethod); profiler_add_network_marker( mURI, requestMethod, mPriority, mChannelId, NetworkLoadType::LOAD_START, mChannelCreationTimestamp, mLastStatusReported, 0, mCacheDisposition, mLoadInfo->GetInnerWindowID(), nullptr, nullptr); } #endif NS_CompareLoadInfoAndLoadContext(this); #ifdef DEBUG AssertPrivateBrowsingId(); #endif NS_ENSURE_ARG_POINTER(listener); NS_ENSURE_TRUE(!mIsPending, NS_ERROR_IN_PROGRESS); NS_ENSURE_TRUE(!mWasOpened, NS_ERROR_ALREADY_OPENED); if (mCanceled) { ReleaseListeners(); return mStatus; } if (MaybeWaitForUploadStreamLength(listener, nullptr)) { return NS_OK; } MOZ_ASSERT(NS_IsMainThread()); if (!gHttpHandler->Active()) { LOG((" after HTTP shutdown...")); ReleaseListeners(); return NS_ERROR_NOT_AVAILABLE; } rv = NS_CheckPortSafety(mURI); if (NS_FAILED(rv)) { ReleaseListeners(); return rv; } if (!mLoadGroup && !mCallbacks) { // If no one called SetLoadGroup or SetNotificationCallbacks, the private // state has not been updated on PrivateBrowsingChannel (which we derive // from) Hence, we have to call UpdatePrivateBrowsing() here UpdatePrivateBrowsing(); } AntiTrackingUtils::UpdateAntiTrackingInfoForChannel(this); if (WaitingForTailUnblock()) { // This channel is marked as Tail and is part of a request context // that has positive number of non-tailed requestst, hence this channel // has been put to a queue. // When tail is unblocked, OnTailUnblock on this channel will be called // to continue AsyncOpen. mListener = listener; MOZ_DIAGNOSTIC_ASSERT(!mOnTailUnblock); mOnTailUnblock = &nsHttpChannel::AsyncOpenOnTailUnblock; LOG((" put on hold until tail is unblocked")); return NS_OK; } // Remember the cookie header that was set, if any nsAutoCString cookieHeader; if (NS_SUCCEEDED(mRequestHead.GetHeader(nsHttp::Cookie, cookieHeader))) { mUserSetCookieHeader = cookieHeader; } // Set user agent override, do so before OnOpeningRequest notification // since we want to allow consumers of that notification change or remove // the User-Agent request header. HttpBaseChannel::SetDocshellUserAgentOverride(); // After we notify any observers (on-opening-request, loadGroup, etc) we // must return NS_OK and return any errors asynchronously via // OnStart/OnStopRequest. Observers may add a reference to the channel // and expect to get OnStopRequest so they know when to drop the reference, // etc. // notify "http-on-opening-request" observers, but not if this is a redirect if (!(mLoadFlags & LOAD_REPLACE)) { gHttpHandler->OnOpeningRequest(this); } mIsPending = true; mWasOpened = true; mListener = listener; if (nsIOService::UseSocketProcess() && !gIOService->IsSocketProcessLaunchComplete()) { RefPtr self = this; gIOService->CallOrWaitForSocketProcess( [self]() { self->AsyncOpenFinal(TimeStamp::Now()); }); return NS_OK; } // PauseTask/DelayHttpChannel queuing if (!DelayHttpChannelQueue::AttemptQueueChannel(this)) { // If fuzzyfox is disabled; or adding to the queue failed, the channel must // continue. AsyncOpenFinal(TimeStamp::Now()); } return NS_OK; } nsresult nsHttpChannel::AsyncOpenFinal(TimeStamp aTimeStamp) { // Added due to PauseTask/DelayHttpChannel if (mLoadGroup) mLoadGroup->AddRequest(this, nullptr); // record asyncopen time unconditionally and clear it if we // don't want it after OnModifyRequest() weighs in. But waiting for // that to complete would mean we don't include proxy resolution in the // timing. if (!mAsyncOpenTimeOverriden) { mAsyncOpenTime = aTimeStamp; } // Remember we have Authorization header set here. We need to check on it // just once and early, AsyncOpen is the best place. mCustomAuthHeader = mRequestHead.HasHeader(nsHttp::Authorization); if (!NS_ShouldClassifyChannel(this)) { return MaybeResolveProxyAndBeginConnect(); } // We are about to do an async lookup to check if the URI is a tracker. If // yes, this channel will be canceled by channel classifier. Chances are the // lookup is not needed so CheckIsTrackerWithLocalTable() will return an // error and then we can MaybeResolveProxyAndBeginConnect() right away. RefPtr self = this; bool willCallback = NS_SUCCEEDED( AsyncUrlChannelClassifier::CheckChannel(this, [self]() -> void { nsresult rv = self->MaybeResolveProxyAndBeginConnect(); if (NS_FAILED(rv)) { // Since this error is thrown asynchronously so that the caller // of BeginConnect() will not do clean up for us. We have to do // it on our own. self->CloseCacheEntry(false); Unused << self->AsyncAbort(rv); } })); if (!willCallback) { // We can do MaybeResolveProxyAndBeginConnect immediately if // CheckIsTrackerWithLocalTable is failed. Note that we don't need to // handle the failure because BeginConnect() will return synchronously and // the caller will be responsible for handling it. return MaybeResolveProxyAndBeginConnect(); } return NS_OK; } nsresult nsHttpChannel::MaybeResolveProxyAndBeginConnect() { nsresult rv; // The common case for HTTP channels is to begin proxy resolution and return // at this point. The only time we know mProxyInfo already is if we're // proxying a non-http protocol like ftp. We don't need to discover proxy // settings if we are never going to make a network connection. if (!mProxyInfo && !(mLoadFlags & (LOAD_ONLY_FROM_CACHE | LOAD_NO_NETWORK_IO)) && NS_SUCCEEDED(ResolveProxy())) { return NS_OK; } rv = BeginConnect(); if (NS_FAILED(rv)) { CloseCacheEntry(false); Unused << AsyncAbort(rv); } return NS_OK; } nsresult nsHttpChannel::AsyncOpenOnTailUnblock() { return AsyncOpen(mListener); } already_AddRefed nsHttpChannel::GetOrCreateChannelClassifier() { if (!mChannelClassifier) { mChannelClassifier = new nsChannelClassifier(this); LOG(("nsHttpChannel [%p] created nsChannelClassifier [%p]\n", this, mChannelClassifier.get())); } RefPtr classifier = mChannelClassifier; return classifier.forget(); } uint16_t nsHttpChannel::GetProxyDNSStrategy() { // This function currently only supports returning DNS_PREFETCH_ORIGIN. // Support for the rest of the DNS_* flags will be added later. if (!mProxyInfo) { return DNS_PREFETCH_ORIGIN; } nsAutoCString type; mProxyInfo->GetType(type); if (!StaticPrefs::network_proxy_socks_remote_dns()) { if (type.EqualsLiteral("socks")) { return DNS_PREFETCH_ORIGIN; } } return 0; } // BeginConnect() SHOULD NOT call AsyncAbort(). AsyncAbort will be called by // functions that called BeginConnect if needed. Only AsyncOpenFinal, // MaybeResolveProxyAndBeginConnect and OnProxyAvailable ever call // BeginConnect. nsresult nsHttpChannel::BeginConnect() { LOG(("nsHttpChannel::BeginConnect [this=%p]\n", this)); nsresult rv; // Construct connection info object nsAutoCString host; nsAutoCString scheme; int32_t port = -1; bool isHttps = mURI->SchemeIs("https"); rv = mURI->GetScheme(scheme); if (NS_SUCCEEDED(rv)) rv = mURI->GetAsciiHost(host); if (NS_SUCCEEDED(rv)) rv = mURI->GetPort(&port); if (NS_SUCCEEDED(rv)) rv = mURI->GetAsciiSpec(mSpec); if (NS_FAILED(rv)) { return rv; } // Just a warning here because some nsIURIs do not implement this method. Unused << NS_WARN_IF(NS_FAILED(mURI->GetUsername(mUsername))); // Reject the URL if it doesn't specify a host if (host.IsEmpty()) { rv = NS_ERROR_MALFORMED_URI; return rv; } LOG(("host=%s port=%d\n", host.get(), port)); LOG(("uri=%s\n", mSpec.get())); nsCOMPtr proxyInfo; if (mProxyInfo) proxyInfo = do_QueryInterface(mProxyInfo); if (mCaps & NS_HTTP_CONNECT_ONLY) { if (!proxyInfo) { LOG(("return failure: no proxy for connect-only channel\n")); return NS_ERROR_FAILURE; } if (!proxyInfo->IsHTTP() && !proxyInfo->IsHTTPS()) { LOG(("return failure: non-http proxy for connect-only channel\n")); return NS_ERROR_FAILURE; } } mRequestHead.SetHTTPS(isHttps); mRequestHead.SetOrigin(scheme, host, port); SetOriginHeader(); SetDoNotTrack(); OriginAttributes originAttributes; // Regular principal in case we have a proxy. if (proxyInfo && !StaticPrefs::privacy_partition_network_state_connection_with_proxy()) { StoragePrincipalHelper::GetOriginAttributes( this, originAttributes, StoragePrincipalHelper::eRegularPrincipal); } else { StoragePrincipalHelper::GetOriginAttributesForNetworkState( this, originAttributes); } // Adjust mCaps according to our request headers: // - If "Connection: close" is set as a request header, then do not bother // trying to establish a keep-alive connection. if (mRequestHead.HasHeaderValue(nsHttp::Connection, "close")) { mCaps &= ~(NS_HTTP_ALLOW_KEEPALIVE); mAllowHttp3 = false; } gHttpHandler->MaybeAddAltSvcForTesting(mURI, mUsername, GetTopWindowOrigin(), mPrivateBrowsing, IsIsolated(), mCallbacks, originAttributes); RefPtr connInfo = new nsHttpConnectionInfo( host, port, ""_ns, mUsername, GetTopWindowOrigin(), proxyInfo, originAttributes, isHttps); bool http2Allowed = !gHttpHandler->IsHttp2Excluded(connInfo); if (!mAllowHttp3) { mCaps |= NS_HTTP_DISALLOW_HTTP3; } bool http3Allowed = !mUpgradeProtocolCallback && !mProxyInfo && !(mCaps & NS_HTTP_BE_CONSERVATIVE) && !mBeConservative && mAllowHttp3; // No need to lookup HTTPSSVC record if we already have one. mUseHTTPSSVC = StaticPrefs::network_dns_upgrade_with_https_rr() && !mHTTPSSVCRecord; RefPtr mapping; if (!mConnectionInfo && mAllowAltSvc && // per channel (http2Allowed || http3Allowed) && !(mLoadFlags & LOAD_FRESH_CONNECTION) && AltSvcMapping::AcceptableProxy(proxyInfo) && (scheme.EqualsLiteral("http") || scheme.EqualsLiteral("https")) && (mapping = gHttpHandler->GetAltServiceMapping( scheme, host, port, mPrivateBrowsing, IsIsolated(), GetTopWindowOrigin(), originAttributes, http2Allowed, http3Allowed))) { LOG(("nsHttpChannel %p Alt Service Mapping Found %s://%s:%d [%s]\n", this, scheme.get(), mapping->AlternateHost().get(), mapping->AlternatePort(), mapping->HashKey().get())); if (!(mLoadFlags & LOAD_ANONYMOUS) && !mPrivateBrowsing) { nsAutoCString altUsedLine(mapping->AlternateHost()); bool defaultPort = mapping->AlternatePort() == (isHttps ? NS_HTTPS_DEFAULT_PORT : NS_HTTP_DEFAULT_PORT); if (!defaultPort) { altUsedLine.AppendLiteral(":"); altUsedLine.AppendInt(mapping->AlternatePort()); } rv = mRequestHead.SetHeader(nsHttp::Alternate_Service_Used, altUsedLine); MOZ_ASSERT(NS_SUCCEEDED(rv)); } nsCOMPtr consoleService = do_GetService(NS_CONSOLESERVICE_CONTRACTID); if (consoleService) { nsAutoString message(u"Alternate Service Mapping found: "_ns); AppendASCIItoUTF16(scheme, message); message.AppendLiteral(u"://"); AppendASCIItoUTF16(host, message); message.AppendLiteral(u":"); message.AppendInt(port); message.AppendLiteral(u" to "); AppendASCIItoUTF16(scheme, message); message.AppendLiteral(u"://"); AppendASCIItoUTF16(mapping->AlternateHost(), message); message.AppendLiteral(u":"); message.AppendInt(mapping->AlternatePort()); consoleService->LogStringMessage(message.get()); } LOG(("nsHttpChannel %p Using connection info from altsvc mapping", this)); mapping->GetConnectionInfo(getter_AddRefs(mConnectionInfo), proxyInfo, originAttributes); Telemetry::Accumulate(Telemetry::HTTP_TRANSACTION_USE_ALTSVC, true); Telemetry::Accumulate(Telemetry::HTTP_TRANSACTION_USE_ALTSVC_OE, !isHttps); // Don't use HTTPSSVC record if we found altsvc mapping. mUseHTTPSSVC = false; } else if (mConnectionInfo) { LOG(("nsHttpChannel %p Using channel supplied connection info", this)); Telemetry::Accumulate(Telemetry::HTTP_TRANSACTION_USE_ALTSVC, false); } else { LOG(("nsHttpChannel %p Using default connection info", this)); mConnectionInfo = connInfo; Telemetry::Accumulate(Telemetry::HTTP_TRANSACTION_USE_ALTSVC, false); } // Need to re-ask the handler, since mConnectionInfo may not be the connInfo // we used earlier if (gHttpHandler->IsHttp2Excluded(mConnectionInfo)) { mAllowSpdy = 0; mCaps |= NS_HTTP_DISALLOW_SPDY; mConnectionInfo->SetNoSpdy(true); } mAuthProvider = new nsHttpChannelAuthProvider(); rv = mAuthProvider->Init(this); if (NS_FAILED(rv)) { return rv; } // check to see if authorization headers should be included // mCustomAuthHeader is set in AsyncOpen if we find Authorization header rv = mAuthProvider->AddAuthorizationHeaders(mCustomAuthHeader); if (NS_FAILED(rv)) { LOG(("nsHttpChannel %p AddAuthorizationHeaders failed (%08x)", this, static_cast(rv))); } // If mTimingEnabled flag is not set after OnModifyRequest() then // clear the already recorded AsyncOpen value for consistency. if (!mTimingEnabled) mAsyncOpenTime = TimeStamp(); // if this somehow fails we can go on without it Unused << gHttpHandler->AddConnectionHeader(&mRequestHead, mCaps); if (!mIsTRRServiceChannel && (mLoadFlags & VALIDATE_ALWAYS || BYPASS_LOCAL_CACHE(mLoadFlags, mPreferCacheLoadOverBypass))) mCaps |= NS_HTTP_REFRESH_DNS; if (gHttpHandler->CriticalRequestPrioritization()) { if (mClassOfService & nsIClassOfService::Leader) { mCaps |= NS_HTTP_LOAD_AS_BLOCKING; } if (mClassOfService & nsIClassOfService::Unblocked) { mCaps |= NS_HTTP_LOAD_UNBLOCKED; } if (mClassOfService & nsIClassOfService::UrgentStart && gHttpHandler->IsUrgentStartEnabled()) { mCaps |= NS_HTTP_URGENT_START; SetPriority(nsISupportsPriority::PRIORITY_HIGHEST); } } // Force-Reload should reset the persistent connection pool for this host if (mLoadFlags & LOAD_FRESH_CONNECTION) { // just the initial document resets the whole pool if (mLoadFlags & LOAD_INITIAL_DOCUMENT_URI) { gHttpHandler->AltServiceCache()->ClearAltServiceMappings(); rv = gHttpHandler->DoShiftReloadConnectionCleanupWithConnInfo( mConnectionInfo); if (NS_FAILED(rv)) { LOG(( "nsHttpChannel::BeginConnect " "DoShiftReloadConnectionCleanupWithConnInfo failed: %08x [this=%p]", static_cast(rv), this)); } } } // We may have been cancelled already, either by on-modify-request // listeners or load group observers; in that case, we should not send the // request to the server if (mCanceled) { return mStatus; } bool shouldBeClassified = NS_ShouldClassifyChannel(this); if (shouldBeClassified) { if (mChannelClassifierCancellationPending) { LOG( ("Waiting for safe-browsing protection cancellation in BeginConnect " "[this=%p]\n", this)); return NS_OK; } ReEvaluateReferrerAfterTrackingStatusIsKnown(); } rv = MaybeStartDNSPrefetch(); if (NS_FAILED(rv)) { auto dnsStrategy = GetProxyDNSStrategy(); if (dnsStrategy & DNS_BLOCK_ON_ORIGIN_RESOLVE) { // TODO: Should this be fatal? return rv; } // Otherwise this shouldn't be fatal. return NS_OK; } rv = ContinueBeginConnectWithResult(); if (NS_FAILED(rv)) { return rv; } if (shouldBeClassified) { // Start nsChannelClassifier to catch phishing and malware URIs. RefPtr channelClassifier = GetOrCreateChannelClassifier(); LOG(("nsHttpChannel::Starting nsChannelClassifier %p [this=%p]", channelClassifier.get(), this)); channelClassifier->Start(); } return NS_OK; } nsresult nsHttpChannel::MaybeStartDNSPrefetch() { // Start a DNS lookup very early in case the real open is queued the DNS can // happen in parallel. Do not do so in the presence of an HTTP proxy as // all lookups other than for the proxy itself are done by the proxy. // Also we don't do a lookup if the LOAD_NO_NETWORK_IO or // LOAD_ONLY_FROM_CACHE flags are set. // // We keep the DNS prefetch object around so that we can retrieve // timing information from it. There is no guarantee that we actually // use the DNS prefetch data for the real connection, but as we keep // this data around for 3 minutes by default, this should almost always // be correct, and even when it isn't, the timing still represents _a_ // valid DNS lookup timing for the site, even if it is not _the_ // timing we used. if (mLoadFlags & (LOAD_NO_NETWORK_IO | LOAD_ONLY_FROM_CACHE)) { return NS_OK; } auto dnsStrategy = GetProxyDNSStrategy(); LOG( ("nsHttpChannel::MaybeStartDNSPrefetch [this=%p, strategy=%u] " "prefetching%s\n", this, dnsStrategy, mCaps & NS_HTTP_REFRESH_DNS ? ", refresh requested" : "")); if (dnsStrategy & DNS_PREFETCH_ORIGIN) { OriginAttributes originAttributes; StoragePrincipalHelper::GetOriginAttributesForNetworkState( this, originAttributes); mDNSPrefetch = new nsDNSPrefetch( mURI, originAttributes, nsIRequest::GetTRRMode(), this, mTimingEnabled); nsresult rv = mDNSPrefetch->PrefetchHigh(mCaps & NS_HTTP_REFRESH_DNS); if (dnsStrategy & DNS_BLOCK_ON_ORIGIN_RESOLVE) { LOG((" blocking on prefetching origin")); if (NS_WARN_IF(NS_FAILED(rv))) { LOG((" lookup failed with 0x%08" PRIx32 ", aborting request", static_cast(rv))); return rv; } // Resolved in OnLookupComplete. mDNSBlockingThenable = mDNSBlockingPromise.Ensure(__func__); } if (mUseHTTPSSVC || gHttpHandler->UseHTTPSRRForSpeculativeConnection()) { rv = mDNSPrefetch->FetchHTTPSSVC(mCaps & NS_HTTP_REFRESH_DNS); if (NS_FAILED(rv)) { LOG((" FetchHTTPSSVC failed with 0x%08" PRIx32, static_cast(rv))); } } } return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetEncodedBodySize(uint64_t* aEncodedBodySize) { if (mCacheEntry && !mCacheEntryIsWriteOnly) { int64_t dataSize = 0; mCacheEntry->GetDataSize(&dataSize); *aEncodedBodySize = dataSize; } else { *aEncodedBodySize = mLogicalOffset; } return NS_OK; } //----------------------------------------------------------------------------- // nsHttpChannel::nsIHttpChannelInternal //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::SetupFallbackChannel(const char* aFallbackKey) { ENSURE_CALLED_BEFORE_CONNECT(); LOG(("nsHttpChannel::SetupFallbackChannel [this=%p, key=%s]\n", this, aFallbackKey)); mFallbackChannel = true; mFallbackKey = aFallbackKey; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetIsAuthChannel(bool* aIsAuthChannel) { *aIsAuthChannel = mIsAuthChannel; return NS_OK; } NS_IMETHODIMP nsHttpChannel::SetChannelIsForDownload(bool aChannelIsForDownload) { if (aChannelIsForDownload) { AddClassFlags(nsIClassOfService::Throttleable); } else { ClearClassFlags(nsIClassOfService::Throttleable); } return HttpBaseChannel::SetChannelIsForDownload(aChannelIsForDownload); } base::ProcessId nsHttpChannel::ProcessId() { nsCOMPtr parentChannel; NS_QueryNotificationCallbacks(this, parentChannel); if (RefPtr httpParent = do_QueryObject(parentChannel)) { return httpParent->OtherPid(); } if (RefPtr docParent = do_QueryObject(parentChannel)) { return docParent->OtherPid(); } return base::GetCurrentProcId(); } auto nsHttpChannel::AttachStreamFilter(base::ProcessId aChildProcessId) -> RefPtr { LOG(("nsHttpChannel::AttachStreamFilter [this=%p]", this)); MOZ_ASSERT(!mOnStartRequestCalled); if (!ProcessId()) { return ChildEndpointPromise::CreateAndReject(false, __func__); } nsCOMPtr parentChannel; NS_QueryNotificationCallbacks(this, parentChannel); // If our listener is a DocumentLoadListener, then we might handle // multi-part responses here in the parent process. The current extension // API doesn't understand the parsed multipart format, so we defer responding // here until CallOnStartRequest, and attach the StreamFilter before the // multipart handler (in the parent process!) if applicable. if (RefPtr docParent = do_QueryObject(parentChannel)) { StreamFilterRequest* request = mStreamFilterRequests.AppendElement(); request->mPromise = new ChildEndpointPromise::Private(__func__); request->mChildProcessId = aChildProcessId; return request->mPromise; } mozilla::ipc::Endpoint parent; mozilla::ipc::Endpoint child; nsresult rv = extensions::PStreamFilter::CreateEndpoints( ProcessId(), aChildProcessId, &parent, &child); if (NS_FAILED(rv)) { return ChildEndpointPromise::CreateAndReject(false, __func__); } if (RefPtr httpParent = do_QueryObject(parentChannel)) { return httpParent->AttachStreamFilter(std::move(parent), std::move(child)); } extensions::StreamFilterParent::Attach(this, std::move(parent)); return ChildEndpointPromise::CreateAndResolve(std::move(child), __func__); } NS_IMETHODIMP nsHttpChannel::GetNavigationStartTimeStamp(TimeStamp* aTimeStamp) { LOG(("nsHttpChannel::GetNavigationStartTimeStamp [this=%p]", this)); MOZ_ASSERT(aTimeStamp); *aTimeStamp = mNavigationStartTimeStamp; return NS_OK; } NS_IMETHODIMP nsHttpChannel::SetNavigationStartTimeStamp(TimeStamp aTimeStamp) { LOG(("nsHttpChannel::SetNavigationStartTimeStamp [this=%p]", this)); mNavigationStartTimeStamp = aTimeStamp; return NS_OK; } //----------------------------------------------------------------------------- // nsHttpChannel::nsISupportsPriority //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::SetPriority(int32_t value) { int16_t newValue = clamped(value, INT16_MIN, INT16_MAX); if (mPriority == newValue) return NS_OK; LOG(("nsHttpChannel::SetPriority %p p=%d", this, newValue)); mPriority = newValue; if (mTransaction) { nsresult rv = gHttpHandler->RescheduleTransaction(mTransaction, mPriority); if (NS_FAILED(rv)) { LOG( ("nsHttpChannel::SetPriority [this=%p] " "RescheduleTransaction failed (%08x)", this, static_cast(rv))); } } // If this channel is the real channel for an e10s channel, notify the // child side about the priority change as well. nsCOMPtr parentChannel; NS_QueryNotificationCallbacks(this, parentChannel); RefPtr httpParent = do_QueryObject(parentChannel); if (httpParent) { httpParent->DoSendSetPriority(newValue); } return NS_OK; } nsresult nsHttpChannel::ContinueBeginConnectWithResult() { LOG(("nsHttpChannel::ContinueBeginConnectWithResult [this=%p]", this)); MOZ_ASSERT(!mCallOnResume, "How did that happen?"); nsresult rv; if (mSuspendCount) { LOG(("Waiting until resume to do async connect [this=%p]\n", this)); mCallOnResume = [](nsHttpChannel* self) { self->ContinueBeginConnect(); return NS_OK; }; rv = NS_OK; } else if (mCanceled) { // We may have been cancelled already, by nsChannelClassifier in that // case, we should not send the request to the server rv = mStatus; } else { rv = PrepareToConnect(); } LOG( ("nsHttpChannel::ContinueBeginConnectWithResult result [this=%p " "rv=%" PRIx32 " mCanceled=%u]\n", this, static_cast(rv), static_cast(mCanceled))); return rv; } void nsHttpChannel::ContinueBeginConnect() { LOG(("nsHttpChannel::ContinueBeginConnect this=%p", this)); nsresult rv = ContinueBeginConnectWithResult(); if (NS_FAILED(rv)) { CloseCacheEntry(false); Unused << AsyncAbort(rv); } } //----------------------------------------------------------------------------- // HttpChannel::nsIClassOfService //----------------------------------------------------------------------------- void nsHttpChannel::OnClassOfServiceUpdated() { LOG(("nsHttpChannel::OnClassOfServiceUpdated this=%p, cos=%u", this, mClassOfService)); if (mTransaction) { gHttpHandler->UpdateClassOfServiceOnTransaction(mTransaction, mClassOfService); } if (EligibleForTailing()) { RemoveAsNonTailRequest(); } else { AddAsNonTailRequest(); } } NS_IMETHODIMP nsHttpChannel::SetClassFlags(uint32_t inFlags) { uint32_t previous = mClassOfService; mClassOfService = inFlags; if (previous != mClassOfService) { OnClassOfServiceUpdated(); } return NS_OK; } NS_IMETHODIMP nsHttpChannel::AddClassFlags(uint32_t inFlags) { uint32_t previous = mClassOfService; mClassOfService |= inFlags; if (previous != mClassOfService) { OnClassOfServiceUpdated(); } return NS_OK; } NS_IMETHODIMP nsHttpChannel::ClearClassFlags(uint32_t inFlags) { uint32_t previous = mClassOfService; mClassOfService &= ~inFlags; if (previous != mClassOfService) { OnClassOfServiceUpdated(); } return NS_OK; } //----------------------------------------------------------------------------- // nsHttpChannel::nsIProtocolProxyCallback //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::OnProxyAvailable(nsICancelable* request, nsIChannel* channel, nsIProxyInfo* pi, nsresult status) { LOG(("nsHttpChannel::OnProxyAvailable [this=%p pi=%p status=%" PRIx32 " mStatus=%" PRIx32 "]\n", this, pi, static_cast(status), static_cast(static_cast(mStatus)))); mProxyRequest = nullptr; nsresult rv; // If status is a failure code, then it means that we failed to resolve // proxy info. That is a non-fatal error assuming it wasn't because the // request was canceled. We just failover to DIRECT when proxy resolution // fails (failure can mean that the PAC URL could not be loaded). if (NS_SUCCEEDED(status)) mProxyInfo = pi; if (!gHttpHandler->Active()) { LOG( ("nsHttpChannel::OnProxyAvailable [this=%p] " "Handler no longer active.\n", this)); rv = NS_ERROR_NOT_AVAILABLE; } else { rv = BeginConnect(); } if (NS_FAILED(rv)) { CloseCacheEntry(false); Unused << AsyncAbort(rv); } return rv; } //----------------------------------------------------------------------------- // nsHttpChannel::nsIProxiedChannel //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::GetProxyInfo(nsIProxyInfo** result) { if (!mConnectionInfo) *result = mProxyInfo; else *result = mConnectionInfo->ProxyInfo(); NS_IF_ADDREF(*result); return NS_OK; } //----------------------------------------------------------------------------- // nsHttpChannel::nsITimedChannel //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::GetDomainLookupStart(TimeStamp* _retval) { if (mTransaction) *_retval = mTransaction->GetDomainLookupStart(); else *_retval = mTransactionTimings.domainLookupStart; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetDomainLookupEnd(TimeStamp* _retval) { if (mTransaction) *_retval = mTransaction->GetDomainLookupEnd(); else *_retval = mTransactionTimings.domainLookupEnd; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetConnectStart(TimeStamp* _retval) { if (mTransaction) *_retval = mTransaction->GetConnectStart(); else *_retval = mTransactionTimings.connectStart; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetTcpConnectEnd(TimeStamp* _retval) { if (mTransaction) *_retval = mTransaction->GetTcpConnectEnd(); else *_retval = mTransactionTimings.tcpConnectEnd; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetSecureConnectionStart(TimeStamp* _retval) { if (mTransaction) *_retval = mTransaction->GetSecureConnectionStart(); else *_retval = mTransactionTimings.secureConnectionStart; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetConnectEnd(TimeStamp* _retval) { if (mTransaction) *_retval = mTransaction->GetConnectEnd(); else *_retval = mTransactionTimings.connectEnd; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetRequestStart(TimeStamp* _retval) { if (mTransaction) *_retval = mTransaction->GetRequestStart(); else *_retval = mTransactionTimings.requestStart; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetResponseStart(TimeStamp* _retval) { if (mTransaction) *_retval = mTransaction->GetResponseStart(); else *_retval = mTransactionTimings.responseStart; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetResponseEnd(TimeStamp* _retval) { if (mTransaction) *_retval = mTransaction->GetResponseEnd(); else *_retval = mTransactionTimings.responseEnd; return NS_OK; } //----------------------------------------------------------------------------- // nsHttpChannel::nsIHttpAuthenticableChannel //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::GetIsSSL(bool* aIsSSL) { // this attribute is really misnamed - it wants to know if // https:// is being used. SSL might be used to cover http:// // in some circumstances (proxies, http/2, etc..) return mURI->SchemeIs("https", aIsSSL); } NS_IMETHODIMP nsHttpChannel::GetProxyMethodIsConnect(bool* aProxyMethodIsConnect) { *aProxyMethodIsConnect = mConnectionInfo->UsingConnect(); return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetServerResponseHeader(nsACString& value) { if (!mResponseHead) return NS_ERROR_NOT_AVAILABLE; return mResponseHead->GetHeader(nsHttp::Server, value); } NS_IMETHODIMP nsHttpChannel::GetProxyChallenges(nsACString& value) { if (!mResponseHead) return NS_ERROR_UNEXPECTED; return mResponseHead->GetHeader(nsHttp::Proxy_Authenticate, value); } NS_IMETHODIMP nsHttpChannel::GetWWWChallenges(nsACString& value) { if (!mResponseHead) return NS_ERROR_UNEXPECTED; return mResponseHead->GetHeader(nsHttp::WWW_Authenticate, value); } NS_IMETHODIMP nsHttpChannel::SetProxyCredentials(const nsACString& value) { return mRequestHead.SetHeader(nsHttp::Proxy_Authorization, value); } NS_IMETHODIMP nsHttpChannel::SetWWWCredentials(const nsACString& value) { // This method is called when various browser initiated authorization // code sets the credentials. We need to flag this header as the // "browser default" so it does not show up in the ServiceWorker // FetchEvent. This may actually get called more than once, though, // so we clear the header first since "default" headers are not // allowed to overwrite normally. Unused << mRequestHead.ClearHeader(nsHttp::Authorization); return mRequestHead.SetHeader(nsHttp::Authorization, value, false, nsHttpHeaderArray::eVarietyRequestDefault); } //----------------------------------------------------------------------------- // Methods that nsIHttpAuthenticableChannel dupes from other IDLs, which we // get from HttpBaseChannel, must be explicitly forwarded, because C++ sucks. //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::GetLoadFlags(nsLoadFlags* aLoadFlags) { return HttpBaseChannel::GetLoadFlags(aLoadFlags); } NS_IMETHODIMP nsHttpChannel::GetURI(nsIURI** aURI) { return HttpBaseChannel::GetURI(aURI); } NS_IMETHODIMP nsHttpChannel::GetNotificationCallbacks(nsIInterfaceRequestor** aCallbacks) { return HttpBaseChannel::GetNotificationCallbacks(aCallbacks); } NS_IMETHODIMP nsHttpChannel::GetLoadGroup(nsILoadGroup** aLoadGroup) { return HttpBaseChannel::GetLoadGroup(aLoadGroup); } NS_IMETHODIMP nsHttpChannel::GetRequestMethod(nsACString& aMethod) { return HttpBaseChannel::GetRequestMethod(aMethod); } //----------------------------------------------------------------------------- // nsHttpChannel::nsIRequestObserver //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::OnStartRequest(nsIRequest* request) { nsresult rv; MOZ_ASSERT(mRequestObserversCalled); AUTO_PROFILER_LABEL("nsHttpChannel::OnStartRequest", NETWORK); if (!(mCanceled || NS_FAILED(mStatus)) && !WRONG_RACING_RESPONSE_SOURCE(request)) { // capture the request's status, so our consumers will know ASAP of any // connection failures, etc - bug 93581 nsresult status; request->GetStatus(&status); mStatus = status; } LOG(("nsHttpChannel::OnStartRequest [this=%p request=%p status=%" PRIx32 "]\n", this, request, static_cast(static_cast(mStatus)))); Telemetry::Accumulate(Telemetry::HTTP_CHANNEL_ONSTART_SUCCESS, NS_SUCCEEDED(mStatus)); if (gTRRService && gTRRService->IsConfirmed()) { Telemetry::Accumulate(Telemetry::HTTP_CHANNEL_ONSTART_SUCCESS_TRR, TRRService::AutoDetectedKey(), NS_SUCCEEDED(mStatus)); } if (mRaceCacheWithNetwork) { LOG( (" racingNetAndCache - mFirstResponseSource:%d fromCache:%d " "fromNet:%d\n", static_cast(mFirstResponseSource), request == mCachePump, request == mTransactionPump)); if (mFirstResponseSource == RESPONSE_PENDING) { // When the cache wins mFirstResponseSource is set to // RESPONSE_FROM_CACHE earlier in ReadFromCache, so this must be a // response from the network. MOZ_ASSERT(request == mTransactionPump); LOG((" First response from network\n")); { // Race condition with OnCacheEntryCheck, which is not limited // to main thread. mozilla::MutexAutoLock lock(mRCWNLock); mFirstResponseSource = RESPONSE_FROM_NETWORK; mOnStartRequestTimestamp = TimeStamp::Now(); // Conditional or byte range header could be added in // OnCacheEntryCheck. We need to remove them because the // request might be sent again due to auth retry and we must // not send these headers without having the entry. if (mDidReval) { LOG((" Removing conditional request headers")); UntieValidationRequest(); mDidReval = false; } if (mCachedContentIsPartial) { LOG((" Removing byte range request headers")); UntieByteRangeRequest(); mCachedContentIsPartial = false; } } mAvailableCachedAltDataType.Truncate(); mDeliveringAltData = false; } else if (WRONG_RACING_RESPONSE_SOURCE(request)) { LOG((" Early return when racing. This response not needed.")); return NS_OK; } } // Make sure things are what we expect them to be... MOZ_ASSERT(request == mCachePump || request == mTransactionPump, "Unexpected request"); MOZ_ASSERT(mRaceCacheWithNetwork || !(mTransactionPump && mCachePump) || mCachedContentIsPartial || mTransactionReplaced, "If we have both pumps, we're racing cache with network, the cache" " content is partial, or the cache entry was revalidated and " "OnStopRequest was not called yet for the transaction pump."); mAfterOnStartRequestBegun = true; if (mOnStartRequestTimestamp.IsNull()) { mOnStartRequestTimestamp = TimeStamp::Now(); } Telemetry::Accumulate(Telemetry::HTTP_ONSTART_SUSPEND_TOTAL_TIME, mSuspendTotalTime); if (mTransaction) { mProxyConnectResponseCode = mTransaction->GetProxyConnectResponseCode(); if (request == mTransactionPump) { mDataSentToChildProcess = mTransaction->DataSentToChildProcess(); } if (!mSecurityInfo && !mCachePump) { // grab the security info from the connection object; the transaction // is guaranteed to own a reference to the connection. mSecurityInfo = mTransaction->SecurityInfo(); } if (!mHTTPSSVCTelemetryReported) { Maybe stage = mTransaction->HTTPSSVCReceivedStage(); if (stage) { Telemetry::Accumulate(Telemetry::DNS_HTTPSSVC_RECORD_RECEIVING_STAGE, *stage); } } } // don't enter this block if we're reading from the cache... if (NS_SUCCEEDED(mStatus) && !mCachePump && mTransaction) { // mTransactionPump doesn't hit OnInputStreamReady and call this until // all of the response headers have been acquired, so we can take // ownership of them from the transaction. mResponseHead = mTransaction->TakeResponseHead(); mSupportsHTTP3 = mTransaction->GetSupportsHTTP3(); // the response head may be null if the transaction was cancelled. in // which case we just need to call OnStartRequest/OnStopRequest. if (mResponseHead) return ProcessResponse(); NS_WARNING("No response head in OnStartRequest"); } // cache file could be deleted on our behalf, it could contain errors or // it failed to allocate memory, reload from network here. if (mCacheEntry && mCachePump && RECOVER_FROM_CACHE_FILE_ERROR(mStatus)) { LOG((" cache file error, reloading from server")); mCacheEntry->AsyncDoom(nullptr); rv = StartRedirectChannelToURI(mURI, nsIChannelEventSink::REDIRECT_INTERNAL); if (NS_SUCCEEDED(rv)) return NS_OK; } // avoid crashing if mListener happens to be null... if (!mListener) { MOZ_ASSERT_UNREACHABLE("mListener is null"); return NS_OK; } rv = ProcessCrossOriginEmbedderPolicyHeader(); if (NS_FAILED(rv)) { mStatus = NS_ERROR_BLOCKED_BY_POLICY; HandleAsyncAbort(); return NS_OK; } rv = ProcessCrossOriginResourcePolicyHeader(); if (NS_FAILED(rv)) { mStatus = NS_ERROR_DOM_CORP_FAILED; HandleAsyncAbort(); return NS_OK; } // before we check for redirects, check if the load should be shifted into a // new process. rv = ComputeCrossOriginOpenerPolicyMismatch(); if (rv == NS_ERROR_BLOCKED_BY_POLICY) { // this navigates the doc's browsing context to a network error. mStatus = NS_ERROR_BLOCKED_BY_POLICY; HandleAsyncAbort(); return NS_OK; } // No process change is needed, so continue on to ContinueOnStartRequest1. return ContinueOnStartRequest1(rv); } nsresult nsHttpChannel::ContinueOnStartRequest1(nsresult result) { nsresult rv; // if process selection failed, cancel this load. if (NS_FAILED(result) && !mCanceled) { Cancel(result); return CallOnStartRequest(); } // before we start any content load, check for redirectTo being called // this code is executed mainly before we start load from the cache if (mAPIRedirectToURI && !mCanceled) { nsAutoCString redirectToSpec; mAPIRedirectToURI->GetAsciiSpec(redirectToSpec); LOG((" redirectTo called with uri=%s", redirectToSpec.BeginReading())); MOZ_ASSERT(!mOnStartRequestCalled); nsCOMPtr redirectTo; mAPIRedirectToURI.swap(redirectTo); PushRedirectAsyncFunc(&nsHttpChannel::ContinueOnStartRequest2); rv = StartRedirectChannelToURI(redirectTo, nsIChannelEventSink::REDIRECT_TEMPORARY); if (NS_SUCCEEDED(rv)) { return NS_OK; } PopRedirectAsyncFunc(&nsHttpChannel::ContinueOnStartRequest2); } // Hack: ContinueOnStartRequest2 uses NS_OK to detect successful redirects, // so we distinguish this codepath (a non-redirect that's processing // normally) by passing in a bogus error code. return ContinueOnStartRequest2(NS_BINDING_FAILED); } nsresult nsHttpChannel::ContinueOnStartRequest2(nsresult result) { if (NS_SUCCEEDED(result)) { // Redirect has passed through, we don't want to go on with this // channel. It will now be canceled by the redirect handling code // that called this function. return NS_OK; } // on proxy errors, try to failover if (mConnectionInfo->ProxyInfo() && (mStatus == NS_ERROR_PROXY_CONNECTION_REFUSED || mStatus == NS_ERROR_UNKNOWN_PROXY_HOST || mStatus == NS_ERROR_NET_TIMEOUT)) { PushRedirectAsyncFunc(&nsHttpChannel::ContinueOnStartRequest3); if (NS_SUCCEEDED(ProxyFailover())) { mProxyConnectResponseCode = 0; return NS_OK; } PopRedirectAsyncFunc(&nsHttpChannel::ContinueOnStartRequest3); } // Hack: ContinueOnStartRequest3 uses NS_OK to detect successful redirects, // so we distinguish this codepath (a non-redirect that's processing // normally) by passing in a bogus error code. return ContinueOnStartRequest3(NS_BINDING_FAILED); } nsresult nsHttpChannel::ContinueOnStartRequest3(nsresult result) { if (NS_SUCCEEDED(result)) { // Redirect has passed through, we don't want to go on with this // channel. It will now be canceled by the redirect handling code // that called this function. return NS_OK; } // on other request errors, try to fall back if (NS_FAILED(mStatus)) { PushRedirectAsyncFunc(&nsHttpChannel::ContinueOnStartRequest4); bool waitingForRedirectCallback; Unused << ProcessFallback(&waitingForRedirectCallback); if (waitingForRedirectCallback) return NS_OK; PopRedirectAsyncFunc(&nsHttpChannel::ContinueOnStartRequest4); } return ContinueOnStartRequest4(NS_OK); } nsresult nsHttpChannel::ContinueOnStartRequest4(nsresult result) { LOG(("nsHttpChannel::ContinueOnStartRequest4 [this=%p]", this)); if (mFallingBack) return NS_OK; return CallOnStartRequest(); } NS_IMETHODIMP nsHttpChannel::OnStopRequest(nsIRequest* request, nsresult status) { AUTO_PROFILER_LABEL("nsHttpChannel::OnStopRequest", NETWORK); LOG(("nsHttpChannel::OnStopRequest [this=%p request=%p status=%" PRIx32 "]\n", this, request, static_cast(status))); LOG(("OnStopRequest %p requestFromCache: %d mFirstResponseSource: %d\n", this, request == mCachePump, static_cast(mFirstResponseSource))); MOZ_ASSERT(NS_IsMainThread(), "OnStopRequest should only be called from the main thread"); if (WRONG_RACING_RESPONSE_SOURCE(request)) { return NS_OK; } if (NS_FAILED(status)) { ProcessSecurityReport(status); } // If this load failed because of a security error, it may be because we // are in a captive portal - trigger an async check to make sure. int32_t nsprError = -1 * NS_ERROR_GET_CODE(status); if (mozilla::psm::IsNSSErrorCode(nsprError) && IsHTTPS()) { gIOService->RecheckCaptivePortal(); } if (mTimingEnabled && request == mCachePump) { mCacheReadEnd = TimeStamp::Now(); ReportNetVSCacheTelemetry(); } // allow content to be cached if it was loaded successfully (bug #482935) bool contentComplete = NS_SUCCEEDED(status); // honor the cancelation status even if the underlying transaction // completed. if (mCanceled || NS_FAILED(mStatus)) status = mStatus; if (mCachedContentIsPartial) { if (NS_SUCCEEDED(status)) { // mTransactionPump should be suspended MOZ_ASSERT(request != mTransactionPump, "byte-range transaction finished prematurely"); if (request == mCachePump) { bool streamDone; status = OnDoneReadingPartialCacheEntry(&streamDone); if (NS_SUCCEEDED(status) && !streamDone) return status; // otherwise, fall through and fire OnStopRequest... } else if (request == mTransactionPump) { MOZ_ASSERT(mConcurrentCacheAccess); } else MOZ_ASSERT_UNREACHABLE("unexpected request"); } // Do not to leave the transaction in a suspended state in error cases. if (NS_FAILED(status) && mTransaction) { nsresult rv = gHttpHandler->CancelTransaction(mTransaction, status); if (NS_FAILED(rv)) { LOG((" CancelTransaction failed (%08x)", static_cast(rv))); } } } nsCOMPtr conv = do_QueryInterface(mCompressListener); if (conv) { conv->GetDecodedDataLength(&mDecodedBodySize); } bool isFromNet = request == mTransactionPump; if (mTransaction) { // determine if we should call DoAuthRetry bool authRetry = mAuthRetryPending && NS_SUCCEEDED(status); mStronglyFramed = mTransaction->ResponseIsComplete(); LOG(("nsHttpChannel %p has a strongly framed transaction: %d", this, mStronglyFramed)); // Save the reference of |mTransaction| to |transactionWithStickyConn| // when it has a sticky connection. // In the case we need to retry an authentication request, we need to // reuse the connection of |transactionWithStickyConn|. RefPtr transactionWithStickyConn; if (mCaps & NS_HTTP_STICKY_CONNECTION || mTransaction->HasStickyConnection()) { transactionWithStickyConn = mTransaction; // Make sure we use the updated caps and connection info from transaction. // We read these values when the transaction is already closed, so there // should be no race. if (mTransaction->Http2Disabled()) { mCaps |= NS_HTTP_DISALLOW_SPDY; } if (mTransaction->Http3Disabled()) { mCaps |= NS_HTTP_DISALLOW_HTTP3; } mConnectionInfo = mTransaction->GetConnInfo(); LOG((" transaction %p has sticky connection", transactionWithStickyConn.get())); } // this code relies on the code in nsHttpTransaction::Close, which // tests for NS_HTTP_STICKY_CONNECTION to determine whether or not to // keep the connection around after the transaction is finished. // LOG((" mAuthRetryPending=%d, status=%" PRIx32 ", sticky conn cap=%d", static_cast(mAuthRetryPending), static_cast(status), mCaps & NS_HTTP_STICKY_CONNECTION)); // We must check caps for stickinness also on the transaction because it // might have been updated by the transaction itself during inspection of // the reposnse headers yet on the socket thread (found connection based // auth schema). if ((mAuthRetryPending || NS_FAILED(status)) && transactionWithStickyConn) { if (NS_FAILED(status)) { // Close (don't reuse) the sticky connection if it's in the middle // of an NTLM negotiation and this channel has been cancelled. // There are proxy servers known to get confused when we send // a new request over such a half-stated connection. if (!mAuthConnectionRestartable) { LOG((" not reusing a half-authenticated sticky connection")); transactionWithStickyConn->DontReuseConnection(); } } } if (mCaps & NS_HTTP_STICKY_CONNECTION) { mTransaction->SetH2WSConnRefTaken(); } mTransferSize = mTransaction->GetTransferSize(); mRequestSize = mTransaction->GetRequestSize(); // If we are using the transaction to serve content, we also save the // time since async open in the cache entry so we can compare telemetry // between cache and net response. // Do not store the time of conditional requests because even if we // fetch the data from the server, the time includes loading of the old // cache entry which would skew the network load time. if (request == mTransactionPump && mCacheEntry && !mDidReval && !mCustomConditionalRequest && !mAsyncOpenTime.IsNull() && !mOnStartRequestTimestamp.IsNull()) { uint64_t onStartTime = (mOnStartRequestTimestamp - mAsyncOpenTime).ToMilliseconds(); uint64_t onStopTime = (TimeStamp::Now() - mAsyncOpenTime).ToMilliseconds(); Unused << mCacheEntry->SetNetworkTimes(onStartTime, onStopTime); } mResponseTrailers = mTransaction->TakeResponseTrailers(); // at this point, we're done with the transaction mTransactionTimings = mTransaction->Timings(); mTransaction = nullptr; mTransactionPump = nullptr; // We no longer need the dns prefetch object if (mDNSPrefetch && mDNSPrefetch->TimingsValid() && !mTransactionTimings.requestStart.IsNull() && !mTransactionTimings.connectStart.IsNull() && mDNSPrefetch->EndTimestamp() <= mTransactionTimings.connectStart) { // We only need the domainLookup timestamps when not using a // persistent connection, meaning if the endTimestamp < connectStart mTransactionTimings.domainLookupStart = mDNSPrefetch->StartTimestamp(); mTransactionTimings.domainLookupEnd = mDNSPrefetch->EndTimestamp(); } mDNSPrefetch = nullptr; // handle auth retry... if (authRetry) { mAuthRetryPending = false; auto continueOSR = [authRetry, isFromNet, contentComplete, transactionWithStickyConn](auto* self, nsresult aStatus) { return self->ContinueOnStopRequestAfterAuthRetry( aStatus, authRetry, isFromNet, contentComplete, transactionWithStickyConn); }; status = DoAuthRetry(transactionWithStickyConn, continueOSR); if (NS_SUCCEEDED(status)) { return NS_OK; } } return ContinueOnStopRequestAfterAuthRetry(status, authRetry, isFromNet, contentComplete, transactionWithStickyConn); } return ContinueOnStopRequest(status, isFromNet, contentComplete); } nsresult nsHttpChannel::ContinueOnStopRequestAfterAuthRetry( nsresult aStatus, bool aAuthRetry, bool aIsFromNet, bool aContentComplete, HttpTransactionShell* aTransWithStickyConn) { LOG( ("nsHttpChannel::ContinueOnStopRequestAfterAuthRetry " "[this=%p, aStatus=%" PRIx32 " aAuthRetry=%d, aIsFromNet=%d, aTransWithStickyConn=%p]\n", this, static_cast(aStatus), aAuthRetry, aIsFromNet, aTransWithStickyConn)); if (aAuthRetry && NS_SUCCEEDED(aStatus)) { return NS_OK; } // If DoAuthRetry failed, or if we have been cancelled since showing // the auth. dialog, then we need to send OnStartRequest now if (aAuthRetry || (mAuthRetryPending && NS_FAILED(aStatus))) { MOZ_ASSERT(NS_FAILED(aStatus), "should have a failure code here"); // NOTE: since we have a failure status, we can ignore the return // value from onStartRequest. LOG((" calling mListener->OnStartRequest [this=%p, listener=%p]\n", this, mListener.get())); if (mListener) { MOZ_ASSERT(!mOnStartRequestCalled, "We should not call OnStartRequest twice."); nsCOMPtr listener(mListener); mOnStartRequestCalled = true; listener->OnStartRequest(this); } else { mOnStartRequestCalled = true; NS_WARNING("OnStartRequest skipped because of null listener"); } } // if this transaction has been replaced, then bail. if (mTransactionReplaced) { LOG(("Transaction replaced\n")); // This was just the network check for a 304 response. mFirstResponseSource = RESPONSE_PENDING; return NS_OK; } bool upgradeWebsocket = mUpgradeProtocolCallback && aTransWithStickyConn && mResponseHead && ((mResponseHead->Status() == 101 && mResponseHead->Version() == HttpVersion::v1_1) || (mResponseHead->Status() == 200 && mResponseHead->Version() == HttpVersion::v2_0)); bool upgradeConnect = mUpgradeProtocolCallback && aTransWithStickyConn && (mCaps & NS_HTTP_CONNECT_ONLY) && mResponseHead && mResponseHead->Status() == 200; if (upgradeWebsocket || upgradeConnect) { nsresult rv = gHttpHandler->CompleteUpgrade(aTransWithStickyConn, mUpgradeProtocolCallback); if (NS_FAILED(rv)) { LOG((" CompleteUpgrade failed with %" PRIx32, static_cast(rv))); // This ensures that WebSocketChannel::OnStopRequest will be // called with an error so the session is properly aborted. aStatus = rv; } } return ContinueOnStopRequest(aStatus, aIsFromNet, aContentComplete); } nsresult nsHttpChannel::ContinueOnStopRequest(nsresult aStatus, bool aIsFromNet, bool aContentComplete) { LOG( ("nsHttpChannel::ContinueOnStopRequest " "[this=%p aStatus=%" PRIx32 ", aIsFromNet=%d]\n", this, static_cast(aStatus), aIsFromNet)); // HTTP_CHANNEL_DISPOSITION TELEMETRY enum ChannelDisposition { kHttpCanceled = 0, kHttpDisk = 1, kHttpNetOK = 2, kHttpNetEarlyFail = 3, kHttpNetLateFail = 4, kHttpsCanceled = 8, kHttpsDisk = 9, kHttpsNetOK = 10, kHttpsNetEarlyFail = 11, kHttpsNetLateFail = 12 } chanDisposition = kHttpCanceled; // HTTP_CHANNEL_DISPOSITION_UPGRADE TELEMETRY Telemetry::LABELS_HTTP_CHANNEL_DISPOSITION_UPGRADE upgradeChanDisposition = Telemetry::LABELS_HTTP_CHANNEL_DISPOSITION_UPGRADE::cancel; // HTTP 0.9 is more likely to be an error than really 0.9, so count it that // way if (mCanceled) { chanDisposition = kHttpCanceled; upgradeChanDisposition = Telemetry::LABELS_HTTP_CHANNEL_DISPOSITION_UPGRADE::cancel; } else if (!mUsedNetwork || (mRaceCacheWithNetwork && mFirstResponseSource == RESPONSE_FROM_CACHE)) { chanDisposition = kHttpDisk; upgradeChanDisposition = Telemetry::LABELS_HTTP_CHANNEL_DISPOSITION_UPGRADE::disk; } else if (NS_SUCCEEDED(aStatus) && mResponseHead && mResponseHead->Version() != HttpVersion::v0_9) { chanDisposition = kHttpNetOK; upgradeChanDisposition = Telemetry::LABELS_HTTP_CHANNEL_DISPOSITION_UPGRADE::netOk; } else if (!mTransferSize) { chanDisposition = kHttpNetEarlyFail; upgradeChanDisposition = Telemetry::LABELS_HTTP_CHANNEL_DISPOSITION_UPGRADE::netEarlyFail; } else { chanDisposition = kHttpNetLateFail; upgradeChanDisposition = Telemetry::LABELS_HTTP_CHANNEL_DISPOSITION_UPGRADE::netLateFail; } // Browser upgrading only happens on HTTPS pages for mixed passive content // when upgrading is enabled. nsCString upgradeKey; if (IsHTTPS()) { // Browser upgrading is disabled and the content is already HTTPS upgradeKey = "disabledNoReason"_ns; // Checks "security.mixed_content.upgrade_display_content" is true if (StaticPrefs::security_mixed_content_upgrade_display_content()) { if (mLoadInfo->GetBrowserUpgradeInsecureRequests()) { // HTTP content the browser has upgraded to HTTPS upgradeKey = "enabledUpgrade"_ns; } else { // Content wasn't upgraded but is already HTTPS upgradeKey = "enabledNoReason"_ns; } } // shift http to https disposition enums chanDisposition = static_cast(chanDisposition + kHttpsCanceled); } else if (mLoadInfo->GetBrowserWouldUpgradeInsecureRequests()) { // HTTP content the browser would upgrade to HTTPS if upgrading was // enabled upgradeKey = "disabledUpgrade"_ns; } else { // HTTP content that wouldn't upgrade upgradeKey = StaticPrefs::security_mixed_content_upgrade_display_content() ? "enabledWont"_ns : "disabledWont"_ns; } Telemetry::AccumulateCategoricalKeyed(upgradeKey, upgradeChanDisposition); LOG((" nsHttpChannel::OnStopRequest ChannelDisposition %d\n", chanDisposition)); Telemetry::Accumulate(Telemetry::HTTP_CHANNEL_DISPOSITION, chanDisposition); // If we upgraded because of 'security.mixed_content.upgrade_display_content', // we collect telemetry if the upgrade was a success. if (mLoadInfo->GetBrowserDidUpgradeInsecureRequests()) { bool success = NS_SUCCEEDED(aStatus); nsContentPolicyType type; mLoadInfo->GetInternalContentPolicyType(&type); switch (type) { case nsIContentPolicy::TYPE_INTERNAL_IMAGE: case nsIContentPolicy::TYPE_INTERNAL_IMAGE_PRELOAD: case nsIContentPolicy::TYPE_INTERNAL_IMAGE_FAVICON: Telemetry::AccumulateCategorical( success ? Telemetry::LABELS_MIXED_CONTENT_UPGRADE_SUCCESS::ImageSuccess : Telemetry::LABELS_MIXED_CONTENT_UPGRADE_SUCCESS::ImageFailed); break; case nsIContentPolicy::TYPE_INTERNAL_VIDEO: Telemetry::AccumulateCategorical( success ? Telemetry::LABELS_MIXED_CONTENT_UPGRADE_SUCCESS::VideoSuccess : Telemetry::LABELS_MIXED_CONTENT_UPGRADE_SUCCESS::VideoFailed); break; case nsIContentPolicy::TYPE_INTERNAL_AUDIO: case nsIContentPolicy::TYPE_INTERNAL_TRACK: Telemetry::AccumulateCategorical( success ? Telemetry::LABELS_MIXED_CONTENT_UPGRADE_SUCCESS::AudioSuccess : Telemetry::LABELS_MIXED_CONTENT_UPGRADE_SUCCESS::AudioFailed); break; default: // upgrade_display_content only upgrades // audio, video and images. MOZ_ASSERT(false, "Unexpected content type."); } } // if needed, check cache entry has all data we expect if (mCacheEntry && mCachePump && mConcurrentCacheAccess && aContentComplete) { int64_t size, contentLength; nsresult rv = CheckPartial(mCacheEntry, &size, &contentLength); if (NS_SUCCEEDED(rv)) { if (size == int64_t(-1)) { // mayhemer TODO - we have to restart read from cache here at the size // offset MOZ_ASSERT(false); LOG( (" cache entry write is still in progress, but we just " "finished reading the cache entry")); } else if (contentLength != int64_t(-1) && contentLength != size) { LOG((" concurrent cache entry write has been interrupted")); mCachedResponseHead = std::move(mResponseHead); // Ignore zero partial length because we also want to resume when // no data at all has been read from the cache. rv = MaybeSetupByteRangeRequest(size, contentLength, true); if (NS_SUCCEEDED(rv) && mIsPartialRequest) { // Prevent read from cache again mCachedContentIsValid = false; mCachedContentIsPartial = 1; // Perform the range request rv = ContinueConnect(); if (NS_SUCCEEDED(rv)) { LOG((" performing range request")); mCachePump = nullptr; return NS_OK; } LOG((" but range request perform failed 0x%08" PRIx32, static_cast(rv))); aStatus = NS_ERROR_NET_INTERRUPT; } else { LOG((" but range request setup failed rv=0x%08" PRIx32 ", failing load", static_cast(rv))); } } } } mIsPending = false; mStatus = aStatus; // perform any final cache operations before we close the cache entry. if (mCacheEntry && mRequestTimeInitialized) { bool writeAccess; // New implementation just returns value of the !mCacheEntryIsReadOnly // flag passed in. Old implementation checks on nsICache::ACCESS_WRITE // flag. mCacheEntry->HasWriteAccess(!mCacheEntryIsReadOnly, &writeAccess); if (writeAccess) { nsresult rv = FinalizeCacheEntry(); if (NS_FAILED(rv)) { LOG(("FinalizeCacheEntry failed (%08x)", static_cast(rv))); } } } ReportRcwnStats(aIsFromNet); // Register entry to the PerformanceStorage resource timing MaybeReportTimingData(); MaybeFlushConsoleReports(); #ifdef MOZ_GECKO_PROFILER if (profiler_can_accept_markers() && !mRedirectURI) { // Don't include this if we already redirected // These do allocations/frees/etc; avoid if not active nsAutoCString requestMethod; GetRequestMethod(requestMethod); nsCOMPtr uri; GetURI(getter_AddRefs(uri)); int32_t priority = PRIORITY_NORMAL; GetPriority(&priority); nsAutoCString contentType; if (mResponseHead) { mResponseHead->ContentType(contentType); } profiler_add_network_marker( uri, requestMethod, priority, mChannelId, NetworkLoadType::LOAD_STOP, mLastStatusReported, TimeStamp::Now(), mLogicalOffset, mCacheDisposition, mLoadInfo->GetInnerWindowID(), &mTransactionTimings, nullptr, std::move(mSource), Some(nsDependentCString(contentType.get()))); } #endif if (mListener) { LOG(("nsHttpChannel %p calling OnStopRequest\n", this)); MOZ_ASSERT(mOnStartRequestCalled, "OnStartRequest should be called before OnStopRequest"); MOZ_ASSERT(!mOnStopRequestCalled, "We should not call OnStopRequest twice"); mOnStopRequestCalled = true; mListener->OnStopRequest(this, aStatus); } mOnStopRequestCalled = true; // The prefetch needs to be released on the main thread mDNSPrefetch = nullptr; // notify "http-on-stop-connect" observers gHttpHandler->OnStopRequest(this); RemoveAsNonTailRequest(); // If a preferred alt-data type was set, this signals the consumer is // interested in reading and/or writing the alt-data representation. // We need to hold a reference to the cache entry in case the listener calls // openAlternativeOutputStream() after CloseCacheEntry() clears mCacheEntry. if (!mPreferredCachedAltDataTypes.IsEmpty()) { mAltDataCacheEntry = mCacheEntry; } CloseCacheEntry(!aContentComplete); if (mOfflineCacheEntry) CloseOfflineCacheEntry(); if (mLoadGroup) { mLoadGroup->RemoveRequest(this, nullptr, aStatus); } // We don't need this info anymore CleanRedirectCacheChainIfNecessary(); ReleaseListeners(); return NS_OK; } //----------------------------------------------------------------------------- // nsHttpChannel::nsIStreamListener //----------------------------------------------------------------------------- class OnTransportStatusAsyncEvent : public Runnable { public: OnTransportStatusAsyncEvent(nsITransportEventSink* aEventSink, nsresult aTransportStatus, int64_t aProgress, int64_t aProgressMax) : Runnable("net::OnTransportStatusAsyncEvent"), mEventSink(aEventSink), mTransportStatus(aTransportStatus), mProgress(aProgress), mProgressMax(aProgressMax) { MOZ_ASSERT(!NS_IsMainThread(), "Shouldn't be created on main thread"); } NS_IMETHOD Run() override { MOZ_ASSERT(NS_IsMainThread(), "Should run on main thread"); if (mEventSink) { mEventSink->OnTransportStatus(nullptr, mTransportStatus, mProgress, mProgressMax); } return NS_OK; } private: nsCOMPtr mEventSink; nsresult mTransportStatus; int64_t mProgress; int64_t mProgressMax; }; NS_IMETHODIMP nsHttpChannel::OnDataAvailable(nsIRequest* request, nsIInputStream* input, uint64_t offset, uint32_t count) { nsresult rv; AUTO_PROFILER_LABEL("nsHttpChannel::OnDataAvailable", NETWORK); LOG(("nsHttpChannel::OnDataAvailable [this=%p request=%p offset=%" PRIu64 " count=%" PRIu32 "]\n", this, request, offset, count)); LOG((" requestFromCache: %d mFirstResponseSource: %d\n", request == mCachePump, static_cast(mFirstResponseSource))); // don't send out OnDataAvailable notifications if we've been canceled. if (mCanceled) return mStatus; if (mAuthRetryPending || WRONG_RACING_RESPONSE_SOURCE(request) || (request == mTransactionPump && mTransactionReplaced)) { uint32_t n; return input->ReadSegments(NS_DiscardSegment, nullptr, count, &n); } MOZ_ASSERT(mResponseHead, "No response head in ODA!!"); MOZ_ASSERT(!(mCachedContentIsPartial && (request == mTransactionPump)), "transaction pump not suspended"); mIsReadingFromCache = (request == mCachePump); if (mListener) { // // synthesize transport progress event. we do this here since we want // to delay OnProgress events until we start streaming data. this is // crucially important since it impacts the lock icon (see bug 240053). // nsresult transportStatus; if (request == mCachePump) transportStatus = NS_NET_STATUS_READING; else transportStatus = NS_NET_STATUS_RECEIVING_FROM; // mResponseHead may reference new or cached headers, but either way it // holds our best estimate of the total content length. Even in the case // of a byte range request, the content length stored in the cached // response headers is what we want to use here. int64_t progressMax = -1; rv = GetContentLength(&progressMax); if (NS_FAILED(rv)) { NS_WARNING("GetContentLength failed"); } int64_t progress = mLogicalOffset + count; if ((progress > progressMax) && (progressMax != -1)) { NS_WARNING( "unexpected progress values - " "is server exceeding content length?"); } // make sure params are in range for js if (!InScriptableRange(progressMax)) { progressMax = -1; } if (!InScriptableRange(progress)) { progress = -1; } if (NS_IsMainThread()) { OnTransportStatus(nullptr, transportStatus, progress, progressMax); } else { rv = NS_DispatchToMainThread(new OnTransportStatusAsyncEvent( this, transportStatus, progress, progressMax)); NS_ENSURE_SUCCESS(rv, rv); } // // we have to manually keep the logical offset of the stream up-to-date. // we cannot depend solely on the offset provided, since we may have // already streamed some data from another source (see, for example, // OnDoneReadingPartialCacheEntry). // int64_t offsetBefore = 0; nsCOMPtr seekable = do_QueryInterface(input); if (seekable && NS_FAILED(seekable->Tell(&offsetBefore))) { seekable = nullptr; } nsresult rv = mListener->OnDataAvailable(this, input, mLogicalOffset, count); if (NS_SUCCEEDED(rv)) { // by contract mListener must read all of "count" bytes, but // nsInputStreamPump is tolerant to seekable streams that violate that // and it will redeliver incompletely read data. So we need to do // the same thing when updating the progress counter to stay in sync. int64_t offsetAfter, delta; if (seekable && NS_SUCCEEDED(seekable->Tell(&offsetAfter))) { delta = offsetAfter - offsetBefore; if (delta != count) { count = delta; NS_WARNING("Listener OnDataAvailable contract violation"); nsCOMPtr consoleService = do_GetService(NS_CONSOLESERVICE_CONTRACTID); nsAutoString message(nsLiteralString( u"http channel Listener OnDataAvailable contract violation")); if (consoleService) { consoleService->LogStringMessage(message.get()); } } } mLogicalOffset += count; } return rv; } return NS_ERROR_ABORT; } //----------------------------------------------------------------------------- // nsHttpChannel::nsIThreadRetargetableRequest //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::RetargetDeliveryTo(nsIEventTarget* aNewTarget) { MOZ_ASSERT(NS_IsMainThread(), "Should be called on main thread only"); NS_ENSURE_ARG(aNewTarget); if (aNewTarget->IsOnCurrentThread()) { NS_WARNING("Retargeting delivery to same thread"); return NS_OK; } if (!mTransactionPump && !mCachePump) { LOG(("nsHttpChannel::RetargetDeliveryTo %p %p no pump available\n", this, aNewTarget)); return NS_ERROR_NOT_AVAILABLE; } nsresult rv = NS_OK; // If both cache pump and transaction pump exist, we're probably dealing // with partially cached content. So, we must be able to retarget both. nsCOMPtr retargetableCachePump; nsCOMPtr retargetableTransactionPump; if (mCachePump) { retargetableCachePump = do_QueryObject(mCachePump); // nsInputStreamPump should implement this interface. MOZ_ASSERT(retargetableCachePump); rv = retargetableCachePump->RetargetDeliveryTo(aNewTarget); } if (NS_SUCCEEDED(rv) && mTransactionPump) { retargetableTransactionPump = do_QueryObject(mTransactionPump); // nsInputStreamPump should implement this interface. MOZ_ASSERT(retargetableTransactionPump); rv = retargetableTransactionPump->RetargetDeliveryTo(aNewTarget); // If retarget fails for transaction pump, we must restore mCachePump. if (NS_FAILED(rv) && retargetableCachePump) { nsCOMPtr main = GetMainThreadEventTarget(); NS_ENSURE_TRUE(main, NS_ERROR_UNEXPECTED); rv = retargetableCachePump->RetargetDeliveryTo(main); } } return rv; } NS_IMETHODIMP nsHttpChannel::GetDeliveryTarget(nsIEventTarget** aEventTarget) { if (mCachePump) { return mCachePump->GetDeliveryTarget(aEventTarget); } if (mTransactionPump) { nsCOMPtr request = do_QueryInterface(mTransactionPump); return request->GetDeliveryTarget(aEventTarget); } return NS_ERROR_NOT_AVAILABLE; } //----------------------------------------------------------------------------- // nsHttpChannel::nsThreadRetargetableStreamListener //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::CheckListenerChain() { NS_ASSERTION(NS_IsMainThread(), "Should be on main thread!"); nsresult rv = NS_OK; nsCOMPtr retargetableListener = do_QueryInterface(mListener, &rv); if (retargetableListener) { rv = retargetableListener->CheckListenerChain(); } return rv; } //----------------------------------------------------------------------------- // nsHttpChannel::nsITransportEventSink //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::OnTransportStatus(nsITransport* trans, nsresult status, int64_t progress, int64_t progressMax) { MOZ_ASSERT(NS_IsMainThread(), "Should be on main thread only"); // cache the progress sink so we don't have to query for it each time. if (!mProgressSink) GetCallback(mProgressSink); if (status == NS_NET_STATUS_CONNECTED_TO || status == NS_NET_STATUS_WAITING_FOR) { bool isTrr = false; if (mTransaction) { mTransaction->GetNetworkAddresses(mSelfAddr, mPeerAddr, isTrr); } else { nsCOMPtr socketTransport = do_QueryInterface(trans); if (socketTransport) { socketTransport->GetSelfAddr(&mSelfAddr); socketTransport->GetPeerAddr(&mPeerAddr); socketTransport->ResolvedByTRR(&isTrr); } } mResolvedByTRR = isTrr; } // block socket status event after Cancel or OnStopRequest has been called. if (mProgressSink && NS_SUCCEEDED(mStatus) && mIsPending) { LOG(("sending progress%s notification [this=%p status=%" PRIx32 " progress=%" PRId64 "/%" PRId64 "]\n", (mLoadFlags & LOAD_BACKGROUND) ? "" : " and status", this, static_cast(status), progress, progressMax)); nsAutoCString host; mURI->GetHost(host); if (!(mLoadFlags & LOAD_BACKGROUND)) { mProgressSink->OnStatus(this, status, NS_ConvertUTF8toUTF16(host).get()); } else { nsCOMPtr parentChannel; NS_QueryNotificationCallbacks(this, parentChannel); // If the event sink is |HttpChannelParent|, we have to send status // events to it even if LOAD_BACKGROUND is set. |HttpChannelParent| // needs to be aware of whether the status is // |NS_NET_STATUS_RECEIVING_FROM| or |NS_NET_STATUS_READING|. // LOAD_BACKGROUND is checked again in |HttpChannelChild|, so the final // consumer won't get this event. if (SameCOMIdentity(parentChannel, mProgressSink)) { mProgressSink->OnStatus(this, status, NS_ConvertUTF8toUTF16(host).get()); } } if (progress > 0) { if ((progress > progressMax) && (progressMax != -1)) { NS_WARNING("unexpected progress values"); } // Try to get mProgressSink if it was nulled out during OnStatus. if (!mProgressSink) { GetCallback(mProgressSink); } if (mProgressSink) { mProgressSink->OnProgress(this, progress, progressMax); } } } return NS_OK; } //----------------------------------------------------------------------------- // nsHttpChannel::nsICacheInfoChannel //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::IsFromCache(bool* value) { if (!mIsPending) return NS_ERROR_NOT_AVAILABLE; if (!mRaceCacheWithNetwork) { // return false if reading a partial cache entry; the data isn't // entirely from the cache! *value = (mCachePump || (mLoadFlags & LOAD_ONLY_IF_MODIFIED)) && mCachedContentIsValid && !mCachedContentIsPartial; return NS_OK; } // If we are racing network and cache (or skipping the cache) // we just return the first response source. *value = mFirstResponseSource == RESPONSE_FROM_CACHE; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetCacheEntryId(uint64_t* aCacheEntryId) { bool fromCache = false; if (NS_FAILED(IsFromCache(&fromCache)) || !fromCache || !mCacheEntry || NS_FAILED(mCacheEntry->GetCacheEntryId(aCacheEntryId))) { return NS_ERROR_NOT_AVAILABLE; } return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetCacheTokenFetchCount(int32_t* _retval) { NS_ENSURE_ARG_POINTER(_retval); nsCOMPtr cacheEntry = mCacheEntry ? mCacheEntry : mAltDataCacheEntry; if (!cacheEntry) { return NS_ERROR_NOT_AVAILABLE; } return cacheEntry->GetFetchCount(_retval); } NS_IMETHODIMP nsHttpChannel::GetCacheTokenExpirationTime(uint32_t* _retval) { NS_ENSURE_ARG_POINTER(_retval); if (!mCacheEntry) return NS_ERROR_NOT_AVAILABLE; return mCacheEntry->GetExpirationTime(_retval); } NS_IMETHODIMP nsHttpChannel::GetCacheTokenCachedCharset(nsACString& _retval) { nsresult rv; if (!mCacheEntry) return NS_ERROR_NOT_AVAILABLE; nsCString cachedCharset; rv = mCacheEntry->GetMetaDataElement("charset", getter_Copies(cachedCharset)); if (NS_SUCCEEDED(rv)) _retval = cachedCharset; return rv; } NS_IMETHODIMP nsHttpChannel::SetCacheTokenCachedCharset(const nsACString& aCharset) { if (!mCacheEntry) return NS_ERROR_NOT_AVAILABLE; return mCacheEntry->SetMetaDataElement("charset", PromiseFlatCString(aCharset).get()); } NS_IMETHODIMP nsHttpChannel::SetAllowStaleCacheContent(bool aAllowStaleCacheContent) { LOG(("nsHttpChannel::SetAllowStaleCacheContent [this=%p, allow=%d]", this, aAllowStaleCacheContent)); mAllowStaleCacheContent = aAllowStaleCacheContent; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetAllowStaleCacheContent(bool* aAllowStaleCacheContent) { NS_ENSURE_ARG(aAllowStaleCacheContent); *aAllowStaleCacheContent = mAllowStaleCacheContent; return NS_OK; } NS_IMETHODIMP nsHttpChannel::SetPreferCacheLoadOverBypass(bool aPreferCacheLoadOverBypass) { mPreferCacheLoadOverBypass = aPreferCacheLoadOverBypass; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetPreferCacheLoadOverBypass(bool* aPreferCacheLoadOverBypass) { NS_ENSURE_ARG(aPreferCacheLoadOverBypass); *aPreferCacheLoadOverBypass = mPreferCacheLoadOverBypass; return NS_OK; } NS_IMETHODIMP nsHttpChannel::PreferAlternativeDataType(const nsACString& aType, const nsACString& aContentType, bool aDeliverAltData) { ENSURE_CALLED_BEFORE_ASYNC_OPEN(); mPreferredCachedAltDataTypes.AppendElement(PreferredAlternativeDataTypeParams( nsCString(aType), nsCString(aContentType), aDeliverAltData)); return NS_OK; } const nsTArray& nsHttpChannel::PreferredAlternativeDataTypes() { return mPreferredCachedAltDataTypes; } NS_IMETHODIMP nsHttpChannel::GetAlternativeDataType(nsACString& aType) { // must be called during or after OnStartRequest if (!mAfterOnStartRequestBegun) { return NS_ERROR_NOT_AVAILABLE; } aType = mAvailableCachedAltDataType; return NS_OK; } NS_IMETHODIMP nsHttpChannel::OpenAlternativeOutputStream(const nsACString& type, int64_t predictedSize, nsIAsyncOutputStream** _retval) { // OnStopRequest will clear mCacheEntry, but we may use mAltDataCacheEntry // if the consumer called PreferAlternativeDataType() nsCOMPtr cacheEntry = mCacheEntry ? mCacheEntry : mAltDataCacheEntry; if (!cacheEntry) { return NS_ERROR_NOT_AVAILABLE; } nsresult rv = cacheEntry->OpenAlternativeOutputStream(type, predictedSize, _retval); if (NS_SUCCEEDED(rv)) { // Clear this metadata flag in case it exists. // The caller of this method may set it again. cacheEntry->SetMetaDataElement("alt-data-from-child", nullptr); } return rv; } NS_IMETHODIMP nsHttpChannel::GetOriginalInputStream(nsIInputStreamReceiver* aReceiver) { if (aReceiver == nullptr) { return NS_ERROR_INVALID_ARG; } nsCOMPtr inputStream; nsCOMPtr cacheEntry = mCacheEntry ? mCacheEntry : mAltDataCacheEntry; if (cacheEntry) { cacheEntry->OpenInputStream(0, getter_AddRefs(inputStream)); } aReceiver->OnInputStreamReady(inputStream); return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetAltDataInputStream(const nsACString& aType, nsIInputStreamReceiver* aReceiver) { if (aReceiver == nullptr) { return NS_ERROR_INVALID_ARG; } nsCOMPtr inputStream; nsCOMPtr cacheEntry = mCacheEntry ? mCacheEntry : mAltDataCacheEntry; if (cacheEntry) { nsresult rv = cacheEntry->OpenAlternativeInputStream( aType, getter_AddRefs(inputStream)); NS_ENSURE_SUCCESS(rv, rv); } aReceiver->OnInputStreamReady(inputStream); return NS_OK; } //----------------------------------------------------------------------------- // nsHttpChannel::nsICachingChannel //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::IsRacing(bool* aIsRacing) { if (!mAfterOnStartRequestBegun) { return NS_ERROR_NOT_AVAILABLE; } *aIsRacing = mRaceCacheWithNetwork; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetCacheToken(nsISupports** token) { NS_ENSURE_ARG_POINTER(token); if (!mCacheEntry) return NS_ERROR_NOT_AVAILABLE; return CallQueryInterface(mCacheEntry, token); } NS_IMETHODIMP nsHttpChannel::SetCacheToken(nsISupports* token) { return NS_ERROR_NOT_IMPLEMENTED; } NS_IMETHODIMP nsHttpChannel::GetOfflineCacheToken(nsISupports** token) { NS_ENSURE_ARG_POINTER(token); if (!mOfflineCacheEntry) return NS_ERROR_NOT_AVAILABLE; return CallQueryInterface(mOfflineCacheEntry, token); } NS_IMETHODIMP nsHttpChannel::SetOfflineCacheToken(nsISupports* token) { return NS_ERROR_NOT_IMPLEMENTED; } NS_IMETHODIMP nsHttpChannel::GetCacheKey(uint32_t* key) { NS_ENSURE_ARG_POINTER(key); LOG(("nsHttpChannel::GetCacheKey [this=%p]\n", this)); *key = mPostID; return NS_OK; } NS_IMETHODIMP nsHttpChannel::SetCacheKey(uint32_t key) { LOG(("nsHttpChannel::SetCacheKey [this=%p key=%u]\n", this, key)); ENSURE_CALLED_BEFORE_CONNECT(); mPostID = key; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetCacheOnlyMetadata(bool* aOnlyMetadata) { NS_ENSURE_ARG(aOnlyMetadata); *aOnlyMetadata = mCacheOnlyMetadata; return NS_OK; } NS_IMETHODIMP nsHttpChannel::SetCacheOnlyMetadata(bool aOnlyMetadata) { LOG(("nsHttpChannel::SetCacheOnlyMetadata [this=%p only-metadata=%d]\n", this, aOnlyMetadata)); ENSURE_CALLED_BEFORE_ASYNC_OPEN(); mCacheOnlyMetadata = aOnlyMetadata; if (aOnlyMetadata) { mLoadFlags |= LOAD_ONLY_IF_MODIFIED; } return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetPin(bool* aPin) { NS_ENSURE_ARG(aPin); *aPin = mPinCacheContent; return NS_OK; } NS_IMETHODIMP nsHttpChannel::SetPin(bool aPin) { LOG(("nsHttpChannel::SetPin [this=%p pin=%d]\n", this, aPin)); ENSURE_CALLED_BEFORE_CONNECT(); mPinCacheContent = aPin; return NS_OK; } NS_IMETHODIMP nsHttpChannel::ForceCacheEntryValidFor(uint32_t aSecondsToTheFuture) { if (!mCacheEntry) { LOG( ("nsHttpChannel::ForceCacheEntryValidFor found no cache entry " "for this channel [this=%p].", this)); } else { mCacheEntry->ForceValidFor(aSecondsToTheFuture); nsAutoCString key; mCacheEntry->GetKey(key); LOG( ("nsHttpChannel::ForceCacheEntryValidFor successfully forced valid " "entry with key %s for %d seconds. [this=%p]", key.get(), aSecondsToTheFuture, this)); } return NS_OK; } //----------------------------------------------------------------------------- // nsHttpChannel::nsIResumableChannel //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::ResumeAt(uint64_t aStartPos, const nsACString& aEntityID) { LOG(("nsHttpChannel::ResumeAt [this=%p startPos=%" PRIu64 " id='%s']\n", this, aStartPos, PromiseFlatCString(aEntityID).get())); mEntityID = aEntityID; mStartPos = aStartPos; mResuming = true; return NS_OK; } nsresult nsHttpChannel::DoAuthRetry( HttpTransactionShell* aTransWithStickyConn, const std::function& aContinueOnStopRequestFunc) { LOG(("nsHttpChannel::DoAuthRetry [this=%p, aTransWithStickyConn=%p]\n", this, aTransWithStickyConn)); MOZ_ASSERT(!mTransaction, "should not have a transaction"); // Note that we don't have to toggle |mIsPending| anymore. See the reasons // below. // 1. We can't suspend the channel during "http-on-modify-request" // when |mIsPending| is false. // 2. We don't check |mIsPending| in SetRequestHeader now. // Reset mRequestObserversCalled because we've probably called the request // observers once already. mRequestObserversCalled = false; // fetch cookies, and add them to the request header. // the server response could have included cookies that must be sent with // this authentication attempt (bug 84794). // TODO: save cookies from auth response and send them here (bug 572151). AddCookiesToRequest(); // notify "http-on-modify-request" observers CallOnModifyRequestObservers(); RefPtr trans(aTransWithStickyConn); return CallOrWaitForResume( [trans{std::move(trans)}, aContinueOnStopRequestFunc](auto* self) { return self->ContinueDoAuthRetry(trans, aContinueOnStopRequestFunc); }); } nsresult nsHttpChannel::ContinueDoAuthRetry( HttpTransactionShell* aTransWithStickyConn, const std::function& aContinueOnStopRequestFunc) { LOG(("nsHttpChannel::ContinueDoAuthRetry [this=%p]\n", this)); mIsPending = true; // get rid of the old response headers mResponseHead = nullptr; // rewind the upload stream if (mUploadStream) { nsCOMPtr seekable = do_QueryInterface(mUploadStream); if (seekable) { seekable->Seek(nsISeekableStream::NS_SEEK_SET, 0); } } // always set sticky connection flag mCaps |= NS_HTTP_STICKY_CONNECTION; // and when needed, allow restart regardless the sticky flag if (mAuthConnectionRestartable) { LOG((" connection made restartable")); mCaps |= NS_HTTP_CONNECTION_RESTARTABLE; mAuthConnectionRestartable = false; } else { LOG((" connection made non-restartable")); mCaps &= ~NS_HTTP_CONNECTION_RESTARTABLE; } // notify "http-on-before-connect" observers gHttpHandler->OnBeforeConnect(this); RefPtr trans(aTransWithStickyConn); return CallOrWaitForResume( [trans{std::move(trans)}, aContinueOnStopRequestFunc](auto* self) { nsresult rv = self->DoConnect(trans); return aContinueOnStopRequestFunc(self, rv); }); } //----------------------------------------------------------------------------- // nsHttpChannel::nsIApplicationCacheChannel //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::GetApplicationCache(nsIApplicationCache** out) { NS_IF_ADDREF(*out = mApplicationCache); return NS_OK; } NS_IMETHODIMP nsHttpChannel::SetApplicationCache(nsIApplicationCache* appCache) { ENSURE_CALLED_BEFORE_CONNECT(); mApplicationCache = appCache; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetApplicationCacheForWrite(nsIApplicationCache** out) { NS_IF_ADDREF(*out = mApplicationCacheForWrite); return NS_OK; } NS_IMETHODIMP nsHttpChannel::SetApplicationCacheForWrite(nsIApplicationCache* appCache) { ENSURE_CALLED_BEFORE_CONNECT(); mApplicationCacheForWrite = appCache; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetLoadedFromApplicationCache( bool* aLoadedFromApplicationCache) { *aLoadedFromApplicationCache = mLoadedFromApplicationCache; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetInheritApplicationCache(bool* aInherit) { *aInherit = mInheritApplicationCache; return NS_OK; } NS_IMETHODIMP nsHttpChannel::SetInheritApplicationCache(bool aInherit) { ENSURE_CALLED_BEFORE_CONNECT(); mInheritApplicationCache = aInherit; return NS_OK; } NS_IMETHODIMP nsHttpChannel::GetChooseApplicationCache(bool* aChoose) { *aChoose = mChooseApplicationCache; return NS_OK; } NS_IMETHODIMP nsHttpChannel::SetChooseApplicationCache(bool aChoose) { ENSURE_CALLED_BEFORE_CONNECT(); mChooseApplicationCache = aChoose; return NS_OK; } nsHttpChannel::OfflineCacheEntryAsForeignMarker* nsHttpChannel::GetOfflineCacheEntryAsForeignMarker() { if (!mApplicationCache) return nullptr; return new OfflineCacheEntryAsForeignMarker(mApplicationCache, mURI); } nsresult nsHttpChannel::OfflineCacheEntryAsForeignMarker::MarkAsForeign() { nsresult rv; nsCOMPtr noRefURI; rv = NS_GetURIWithoutRef(mCacheURI, getter_AddRefs(noRefURI)); NS_ENSURE_SUCCESS(rv, rv); nsAutoCString spec; rv = noRefURI->GetAsciiSpec(spec); NS_ENSURE_SUCCESS(rv, rv); return mApplicationCache->MarkEntry(spec, nsIApplicationCache::ITEM_FOREIGN); } NS_IMETHODIMP nsHttpChannel::MarkOfflineCacheEntryAsForeign() { nsresult rv; UniquePtr marker( GetOfflineCacheEntryAsForeignMarker()); if (!marker) return NS_ERROR_NOT_AVAILABLE; rv = marker->MarkAsForeign(); NS_ENSURE_SUCCESS(rv, rv); return NS_OK; } //----------------------------------------------------------------------------- // nsHttpChannel::nsIAsyncVerifyRedirectCallback //----------------------------------------------------------------------------- nsresult nsHttpChannel::WaitForRedirectCallback() { nsresult rv; LOG(("nsHttpChannel::WaitForRedirectCallback [this=%p]\n", this)); if (mTransactionPump) { rv = mTransactionPump->Suspend(); NS_ENSURE_SUCCESS(rv, rv); } if (mCachePump) { rv = mCachePump->Suspend(); if (NS_FAILED(rv) && mTransactionPump) { #ifdef DEBUG nsresult resume = #endif mTransactionPump->Resume(); MOZ_ASSERT(NS_SUCCEEDED(resume), "Failed to resume transaction pump"); } NS_ENSURE_SUCCESS(rv, rv); } mWaitingForRedirectCallback = true; return NS_OK; } NS_IMETHODIMP nsHttpChannel::OnRedirectVerifyCallback(nsresult result) { LOG( ("nsHttpChannel::OnRedirectVerifyCallback [this=%p] " "result=%" PRIx32 " stack=%zu mWaitingForRedirectCallback=%u\n", this, static_cast(result), mRedirectFuncStack.Length(), mWaitingForRedirectCallback)); MOZ_ASSERT(mWaitingForRedirectCallback, "Someone forgot to call WaitForRedirectCallback() ?!"); mWaitingForRedirectCallback = false; if (mCanceled && NS_SUCCEEDED(result)) result = NS_BINDING_ABORTED; for (uint32_t i = mRedirectFuncStack.Length(); i > 0;) { --i; // Pop the last function pushed to the stack nsContinueRedirectionFunc func = mRedirectFuncStack.PopLastElement(); // Call it with the result we got from the callback or the deeper // function call. result = (this->*func)(result); // If a new function has been pushed to the stack and placed us in the // waiting state, we need to break the chain and wait for the callback // again. if (mWaitingForRedirectCallback) break; } if (NS_FAILED(result) && !mCanceled) { // First, cancel this channel if we are in failure state to set mStatus // and let it be propagated to pumps. Cancel(result); } if (!mWaitingForRedirectCallback) { // We are not waiting for the callback. At this moment we must release // reference to the redirect target channel, otherwise we may leak. mRedirectChannel = nullptr; } // We always resume the pumps here. If all functions on stack have been // called we need OnStopRequest to be triggered, and if we broke out of the // loop above (and are thus waiting for a new callback) the suspension // count must be balanced in the pumps. if (mTransactionPump) mTransactionPump->Resume(); if (mCachePump) mCachePump->Resume(); return result; } void nsHttpChannel::PushRedirectAsyncFunc(nsContinueRedirectionFunc func) { mRedirectFuncStack.AppendElement(func); } void nsHttpChannel::PopRedirectAsyncFunc(nsContinueRedirectionFunc func) { MOZ_ASSERT(func == mRedirectFuncStack.LastElement(), "Trying to pop wrong method from redirect async stack!"); mRedirectFuncStack.RemoveLastElement(); } //----------------------------------------------------------------------------- // nsIDNSListener functions //----------------------------------------------------------------------------- NS_IMETHODIMP nsHttpChannel::OnLookupComplete(nsICancelable* request, nsIDNSRecord* rec, nsresult status) { MOZ_ASSERT(NS_IsMainThread(), "Expecting DNS callback on main thread."); nsCOMPtr httpSSVCRecord = do_QueryInterface(rec); LOG( ("nsHttpChannel::OnLookupComplete [this=%p] prefetch complete%s: " "%s status[0x%" PRIx32 "], isHTTPSSVC=%d\n", this, mCaps & NS_HTTP_REFRESH_DNS ? ", refresh requested" : "", NS_SUCCEEDED(status) ? "success" : "failure", static_cast(status), !!httpSSVCRecord)); if (!httpSSVCRecord) { // Unset DNS cache refresh if it was requested, if (mCaps & NS_HTTP_REFRESH_DNS) { mCaps &= ~NS_HTTP_REFRESH_DNS; if (mTransaction) { mTransaction->SetDNSWasRefreshed(); } } if (!mDNSBlockingPromise.IsEmpty()) { if (NS_SUCCEEDED(status)) { nsCOMPtr record(rec); mDNSBlockingPromise.Resolve(record, __func__); } else { mDNSBlockingPromise.Reject(status, __func__); } } return NS_OK; } if (mWaitHTTPSSVCRecord) { MOZ_ASSERT(mURI->SchemeIs("http")); MOZ_ASSERT(!mHTTPSSVCRecord); // This record will be used in the new redirect channel. mHTTPSSVCRecord = httpSSVCRecord; nsresult rv = ContinueOnBeforeConnect(true, status); if (NS_FAILED(rv)) { CloseCacheEntry(false); Unused << AsyncAbort(rv); } } else { // This channel is not canceled and the transaction is not created. if (NS_SUCCEEDED(mStatus) && !mTransaction && (mFirstResponseSource != RESPONSE_FROM_CACHE)) { bool hasIPAddress = false; Unused << httpSSVCRecord->GetHasIPAddresses(&hasIPAddress); Telemetry::Accumulate(Telemetry::DNS_HTTPSSVC_RECORD_RECEIVING_STAGE, hasIPAddress ? HTTPSSVC_WITH_IPHINT_RECEIVED_STAGE_0 : HTTPSSVC_WITHOUT_IPHINT_RECEIVED_STAGE_0); mHTTPSSVCTelemetryReported = true; } } return NS_OK; } //----------------------------------------------------------------------------- // nsHttpChannel internal functions //----------------------------------------------------------------------------- // Creates an URI to the given location using current URI for base and charset nsresult nsHttpChannel::CreateNewURI(const char* loc, nsIURI** newURI) { nsCOMPtr ioService; nsresult rv = gHttpHandler->GetIOService(getter_AddRefs(ioService)); if (NS_FAILED(rv)) return rv; return ioService->NewURI(nsDependentCString(loc), nullptr, mURI, newURI); } void nsHttpChannel::MaybeInvalidateCacheEntryForSubsequentGet() { // See RFC 2616 section 5.1.1. These are considered valid // methods which DO NOT invalidate cache-entries for the // referred resource. POST, PUT and DELETE as well as any // other method not listed here will potentially invalidate // any cached copy of the resource if (mRequestHead.IsGet() || mRequestHead.IsOptions() || mRequestHead.IsHead() || mRequestHead.IsTrace() || mRequestHead.IsConnect()) { return; } // Invalidate the request-uri. if (LOG_ENABLED()) { nsAutoCString key; mURI->GetAsciiSpec(key); LOG(("MaybeInvalidateCacheEntryForSubsequentGet [this=%p uri=%s]\n", this, key.get())); } DoInvalidateCacheEntry(mURI); // Invalidate Location-header if set nsAutoCString location; Unused << mResponseHead->GetHeader(nsHttp::Location, location); if (!location.IsEmpty()) { LOG((" Location-header=%s\n", location.get())); InvalidateCacheEntryForLocation(location.get()); } // Invalidate Content-Location-header if set Unused << mResponseHead->GetHeader(nsHttp::Content_Location, location); if (!location.IsEmpty()) { LOG((" Content-Location-header=%s\n", location.get())); InvalidateCacheEntryForLocation(location.get()); } } void nsHttpChannel::InvalidateCacheEntryForLocation(const char* location) { nsAutoCString tmpCacheKey, tmpSpec; nsCOMPtr resultingURI; nsresult rv = CreateNewURI(location, getter_AddRefs(resultingURI)); if (NS_SUCCEEDED(rv) && HostPartIsTheSame(resultingURI)) { DoInvalidateCacheEntry(resultingURI); } else { LOG((" hosts not matching\n")); } } void nsHttpChannel::DoInvalidateCacheEntry(nsIURI* aURI) { // NOTE: // Following comments 24,32 and 33 in bug #327765, we only care about // the cache in the protocol-handler, not the application cache. // The logic below deviates from the original logic in OpenCacheEntry on // one point by using only READ_ONLY access-policy. I think this is safe. nsresult rv; nsAutoCString key; if (LOG_ENABLED()) { aURI->GetAsciiSpec(key); } LOG(("DoInvalidateCacheEntry [channel=%p key=%s]", this, key.get())); nsCOMPtr cacheStorageService( services::GetCacheStorageService()); rv = cacheStorageService ? NS_OK : NS_ERROR_FAILURE; nsCOMPtr cacheStorage; if (NS_SUCCEEDED(rv)) { RefPtr info = GetLoadContextInfo(this); rv = cacheStorageService->DiskCacheStorage(info, false, getter_AddRefs(cacheStorage)); } if (NS_SUCCEEDED(rv)) { rv = cacheStorage->AsyncDoomURI(aURI, ""_ns, nullptr); } LOG(("DoInvalidateCacheEntry [channel=%p key=%s rv=%d]", this, key.get(), int(rv))); } void nsHttpChannel::AsyncOnExamineCachedResponse() { gHttpHandler->OnExamineCachedResponse(this); } void nsHttpChannel::UpdateAggregateCallbacks() { if (!mTransaction) { return; } nsCOMPtr callbacks; NS_NewNotificationCallbacksAggregation(mCallbacks, mLoadGroup, GetCurrentEventTarget(), getter_AddRefs(callbacks)); mTransaction->SetSecurityCallbacks(callbacks); } NS_IMETHODIMP nsHttpChannel::SetLoadGroup(nsILoadGroup* aLoadGroup) { MOZ_ASSERT(NS_IsMainThread(), "Wrong thread."); nsresult rv = HttpBaseChannel::SetLoadGroup(aLoadGroup); if (NS_SUCCEEDED(rv)) { UpdateAggregateCallbacks(); } return rv; } NS_IMETHODIMP nsHttpChannel::SetNotificationCallbacks(nsIInterfaceRequestor* aCallbacks) { MOZ_ASSERT(NS_IsMainThread(), "Wrong thread."); nsresult rv = HttpBaseChannel::SetNotificationCallbacks(aCallbacks); if (NS_SUCCEEDED(rv)) { UpdateAggregateCallbacks(); } return rv; } bool nsHttpChannel::AwaitingCacheCallbacks() { return mCacheEntriesToWaitFor != 0; } void nsHttpChannel::SetPushedStreamTransactionAndId( HttpTransactionShell* aTransWithPushedStream, uint32_t aPushedStreamId) { MOZ_ASSERT(!mTransWithPushedStream); LOG(("nsHttpChannel::SetPushedStreamTransaction [this=%p] trans=%p", this, aTransWithPushedStream)); mTransWithPushedStream = aTransWithPushedStream; mPushedStreamId = aPushedStreamId; } nsresult nsHttpChannel::OnPush(uint32_t aPushedStreamId, const nsACString& aUrl, const nsACString& aRequestString, HttpTransactionShell* aTransaction) { MOZ_ASSERT(NS_IsMainThread()); MOZ_ASSERT(aTransaction); LOG(("nsHttpChannel::OnPush [this=%p, trans=%p]\n", this, aTransaction)); MOZ_ASSERT(mCaps & NS_HTTP_ONPUSH_LISTENER); nsCOMPtr pushListener; NS_QueryNotificationCallbacks(mCallbacks, mLoadGroup, NS_GET_IID(nsIHttpPushListener), getter_AddRefs(pushListener)); if (!pushListener) { LOG( ("nsHttpChannel::OnPush [this=%p] notification callbacks do not " "implement nsIHttpPushListener\n", this)); return NS_ERROR_NOT_AVAILABLE; } nsCOMPtr pushResource; nsresult rv; // Create a Channel for the Push Resource rv = NS_NewURI(getter_AddRefs(pushResource), aUrl); if (NS_FAILED(rv)) { return NS_ERROR_FAILURE; } nsCOMPtr ioService; rv = gHttpHandler->GetIOService(getter_AddRefs(ioService)); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr pushChannel; rv = NS_NewChannelInternal(getter_AddRefs(pushChannel), pushResource, mLoadInfo, nullptr, // PerformanceStorage nullptr, // aLoadGroup nullptr, // aCallbacks nsIRequest::LOAD_NORMAL, ioService); NS_ENSURE_SUCCESS(rv, rv); nsCOMPtr pushHttpChannel = do_QueryInterface(pushChannel); MOZ_ASSERT(pushHttpChannel); if (!pushHttpChannel) { return NS_ERROR_UNEXPECTED; } RefPtr channel; CallQueryInterface(pushHttpChannel, channel.StartAssignment()); MOZ_ASSERT(channel); if (!channel) { return NS_ERROR_UNEXPECTED; } // new channel needs mrqeuesthead and headers from pushedStream channel->mRequestHead.ParseHeaderSet(aRequestString.BeginReading()); channel->mLoadGroup = mLoadGroup; channel->mLoadInfo = mLoadInfo; channel->mCallbacks = mCallbacks; // Link the trans with pushed stream and the new channel and call listener channel->SetPushedStreamTransactionAndId(aTransaction, aPushedStreamId); rv = pushListener->OnPush(this, pushHttpChannel); return rv; } // static bool nsHttpChannel::IsRedirectStatus(uint32_t status) { // 305 disabled as a security measure (see bug 187996). return status == 300 || status == 301 || status == 302 || status == 303 || status == 307 || status == 308; } void nsHttpChannel::SetCouldBeSynthesized() { MOZ_ASSERT(!BypassServiceWorker()); mResponseCouldBeSynthesized = true; } void nsHttpChannel::SetConnectionInfo(nsHttpConnectionInfo* aCI) { mConnectionInfo = aCI ? aCI->Clone() : nullptr; } NS_IMETHODIMP nsHttpChannel::OnPreflightSucceeded() { MOZ_ASSERT(mRequireCORSPreflight, "Why did a preflight happen?"); mIsCorsPreflightDone = 1; mPreflightChannel = nullptr; return ContinueConnect(); } NS_IMETHODIMP nsHttpChannel::OnPreflightFailed(nsresult aError) { MOZ_ASSERT(mRequireCORSPreflight, "Why did a preflight happen?"); mIsCorsPreflightDone = 1; mPreflightChannel = nullptr; CloseCacheEntry(false); Unused << AsyncAbort(aError); return NS_OK; } nsresult nsHttpChannel::CallOrWaitForResume( const std::function& aFunc) { if (mCanceled) { MOZ_ASSERT(NS_FAILED(mStatus)); return mStatus; } if (mSuspendCount) { LOG(("Waiting until resume [this=%p]\n", this)); MOZ_ASSERT(!mCallOnResume); mCallOnResume = aFunc; return NS_OK; } return aFunc(this); } void nsHttpChannel::MaybeWarnAboutAppCache() { // First, accumulate a telemetry ping about appcache usage. Telemetry::Accumulate(Telemetry::HTTP_OFFLINE_CACHE_DOCUMENT_LOAD, true); // Then, issue a deprecation warning. nsCOMPtr warner; GetCallback(warner); if (warner) { warner->IssueWarning(static_cast(DeprecatedOperations::eAppCache), false); } } // Step 10 of HTTP-network-or-cache fetch void nsHttpChannel::SetOriginHeader() { if (mRequestHead.IsGet() || mRequestHead.IsHead()) { return; } nsresult rv; nsAutoCString existingHeader; Unused << mRequestHead.GetHeader(nsHttp::Origin, existingHeader); if (!existingHeader.IsEmpty()) { LOG(("nsHttpChannel::SetOriginHeader Origin header already present")); nsCOMPtr uri; rv = NS_NewURI(getter_AddRefs(uri), existingHeader); if (NS_SUCCEEDED(rv) && ReferrerInfo::ShouldSetNullOriginHeader(this, uri)) { LOG(("nsHttpChannel::SetOriginHeader null Origin by Referrer-Policy")); rv = mRequestHead.SetHeader(nsHttp::Origin, "null"_ns, false /* merge */); MOZ_ASSERT(NS_SUCCEEDED(rv)); } return; } if (StaticPrefs::network_http_sendOriginHeader() == 0) { // Origin header suppressed by user setting return; } nsCOMPtr referrer; auto* basePrin = BasePrincipal::Cast(mLoadInfo->TriggeringPrincipal()); basePrin->GetURI(getter_AddRefs(referrer)); if (!referrer || !dom::ReferrerInfo::IsReferrerSchemeAllowed(referrer)) { return; } nsAutoCString origin("null"); nsContentUtils::GetASCIIOrigin(referrer, origin); // Restrict Origin to same-origin loads if requested by user if (StaticPrefs::network_http_sendOriginHeader() == 1) { nsAutoCString currentOrigin; nsContentUtils::GetASCIIOrigin(mURI, currentOrigin); if (!origin.EqualsIgnoreCase(currentOrigin.get())) { // Origin header suppressed by user setting return; } } if (ReferrerInfo::ShouldSetNullOriginHeader(this, referrer)) { origin.AssignLiteral("null"); } rv = mRequestHead.SetHeader(nsHttp::Origin, origin, false /* merge */); MOZ_ASSERT(NS_SUCCEEDED(rv)); } void nsHttpChannel::SetDoNotTrack() { /** * 'DoNotTrack' header should be added if 'privacy.donottrackheader.enabled' * is true or tracking protection is enabled. See bug 1258033. */ nsCOMPtr loadContext; NS_QueryNotificationCallbacks(this, loadContext); if ((loadContext && loadContext->UseTrackingProtection()) || StaticPrefs::privacy_donottrackheader_enabled()) { DebugOnly rv = mRequestHead.SetHeader(nsHttp::DoNotTrack, "1"_ns, false); MOZ_ASSERT(NS_SUCCEEDED(rv)); } } void nsHttpChannel::ReportRcwnStats(bool isFromNet) { if (!StaticPrefs::network_http_rcwn_enabled()) { return; } if (isFromNet) { if (mRaceCacheWithNetwork) { gIOService->IncrementNetWonRequestNumber(); Telemetry::Accumulate( Telemetry::NETWORK_RACE_CACHE_BANDWIDTH_RACE_NETWORK_WIN, mTransferSize); if (mRaceDelay) { AccumulateCategorical( Telemetry::LABELS_NETWORK_RACE_CACHE_WITH_NETWORK_USAGE_2:: NetworkDelayedRace); } else { AccumulateCategorical( Telemetry::LABELS_NETWORK_RACE_CACHE_WITH_NETWORK_USAGE_2:: NetworkRace); } } else { Telemetry::Accumulate(Telemetry::NETWORK_RACE_CACHE_BANDWIDTH_NOT_RACE, mTransferSize); AccumulateCategorical( Telemetry::LABELS_NETWORK_RACE_CACHE_WITH_NETWORK_USAGE_2:: NetworkNoRace); } } else { if (mRaceCacheWithNetwork || mRaceDelay) { gIOService->IncrementCacheWonRequestNumber(); Telemetry::Accumulate( Telemetry::NETWORK_RACE_CACHE_BANDWIDTH_RACE_CACHE_WIN, mTransferSize); if (mRaceDelay) { AccumulateCategorical( Telemetry::LABELS_NETWORK_RACE_CACHE_WITH_NETWORK_USAGE_2:: CacheDelayedRace); } else { AccumulateCategorical( Telemetry::LABELS_NETWORK_RACE_CACHE_WITH_NETWORK_USAGE_2:: CacheRace); } } else { Telemetry::Accumulate(Telemetry::NETWORK_RACE_CACHE_BANDWIDTH_NOT_RACE, mTransferSize); AccumulateCategorical( Telemetry::LABELS_NETWORK_RACE_CACHE_WITH_NETWORK_USAGE_2:: CacheNoRace); } } gIOService->IncrementRequestNumber(); } static const size_t kPositiveBucketNumbers = 34; static const int64_t kPositiveBucketLevels[kPositiveBucketNumbers] = { 0, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000, 2000, 3000, 4000, 5000, 6000, 7000, 8000, 9000, 10000, 20000, 30000, 40000, 50000, 60000}; /** * For space efficiency, we collect finer resolution for small difference * between net and cache time, coarser for larger. * Bucket #40 for a tie. * #41 to #50 indicates cache wins by 1ms to 100ms, split equally. * #51 to #59 indicates cache wins by 101ms to 1000ms. * #60 to #68 indicates cache wins by 1s to 10s. * #69 to #73 indicates cache wins by 11s to 60s. * #74 indicates cache wins by more than 1 minute. * * #39 to #30 indicates network wins by 1ms to 100ms, split equally. * #29 to #21 indicates network wins by 101ms to 1000ms. * #20 to #12 indicates network wins by 1s to 10s. * #11 to #7 indicates network wins by 11s to 60s. * #6 indicates network wins by more than 1 minute. * * Other bucket numbers are reserved. */ inline int64_t nsHttpChannel::ComputeTelemetryBucketNumber( int64_t difftime_ms) { int64_t absBucketIndex = std::lower_bound(kPositiveBucketLevels, kPositiveBucketLevels + kPositiveBucketNumbers, static_cast(mozilla::Abs(difftime_ms))) - kPositiveBucketLevels; return difftime_ms >= 0 ? 40 + absBucketIndex : 40 - absBucketIndex; } void nsHttpChannel::ReportNetVSCacheTelemetry() { nsresult rv; if (!mCacheEntry) { return; } // We only report telemetry if the entry is persistent (on disk) bool persistent; rv = mCacheEntry->GetPersistent(&persistent); if (NS_FAILED(rv) || !persistent) { return; } uint64_t onStartNetTime = 0; if (NS_FAILED(mCacheEntry->GetOnStartTime(&onStartNetTime))) { return; } uint64_t onStopNetTime = 0; if (NS_FAILED(mCacheEntry->GetOnStopTime(&onStopNetTime))) { return; } uint64_t onStartCacheTime = (mOnStartRequestTimestamp - mAsyncOpenTime).ToMilliseconds(); int64_t onStartDiff = onStartNetTime - onStartCacheTime; onStartDiff = ComputeTelemetryBucketNumber(onStartDiff); uint64_t onStopCacheTime = (mCacheReadEnd - mAsyncOpenTime).ToMilliseconds(); int64_t onStopDiff = onStopNetTime - onStopCacheTime; onStopDiff = ComputeTelemetryBucketNumber(onStopDiff); if (mDidReval) { Telemetry::Accumulate(Telemetry::HTTP_NET_VS_CACHE_ONSTART_REVALIDATED_V2, onStartDiff); Telemetry::Accumulate(Telemetry::HTTP_NET_VS_CACHE_ONSTOP_REVALIDATED_V2, onStopDiff); } else { Telemetry::Accumulate( Telemetry::HTTP_NET_VS_CACHE_ONSTART_NOTREVALIDATED_V2, onStartDiff); Telemetry::Accumulate(Telemetry::HTTP_NET_VS_CACHE_ONSTOP_NOTREVALIDATED_V2, onStopDiff); } if (mDidReval) { // We don't report revalidated probes as the data would be skewed. return; } if (mCacheOpenWithPriority) { if (mCacheQueueSizeWhenOpen < 5) { Telemetry::Accumulate( Telemetry::HTTP_NET_VS_CACHE_ONSTART_QSMALL_HIGHPRI_V2, onStartDiff); Telemetry::Accumulate( Telemetry::HTTP_NET_VS_CACHE_ONSTOP_QSMALL_HIGHPRI_V2, onStopDiff); } else if (mCacheQueueSizeWhenOpen < 10) { Telemetry::Accumulate( Telemetry::HTTP_NET_VS_CACHE_ONSTART_QMED_HIGHPRI_V2, onStartDiff); Telemetry::Accumulate(Telemetry::HTTP_NET_VS_CACHE_ONSTOP_QMED_HIGHPRI_V2, onStopDiff); } else { Telemetry::Accumulate( Telemetry::HTTP_NET_VS_CACHE_ONSTART_QBIG_HIGHPRI_V2, onStartDiff); Telemetry::Accumulate(Telemetry::HTTP_NET_VS_CACHE_ONSTOP_QBIG_HIGHPRI_V2, onStopDiff); } } else { // The limits are higher for normal priority cache queues if (mCacheQueueSizeWhenOpen < 10) { Telemetry::Accumulate( Telemetry::HTTP_NET_VS_CACHE_ONSTART_QSMALL_NORMALPRI_V2, onStartDiff); Telemetry::Accumulate( Telemetry::HTTP_NET_VS_CACHE_ONSTOP_QSMALL_NORMALPRI_V2, onStopDiff); } else if (mCacheQueueSizeWhenOpen < 50) { Telemetry::Accumulate( Telemetry::HTTP_NET_VS_CACHE_ONSTART_QMED_NORMALPRI_V2, onStartDiff); Telemetry::Accumulate( Telemetry::HTTP_NET_VS_CACHE_ONSTOP_QMED_NORMALPRI_V2, onStopDiff); } else { Telemetry::Accumulate( Telemetry::HTTP_NET_VS_CACHE_ONSTART_QBIG_NORMALPRI_V2, onStartDiff); Telemetry::Accumulate( Telemetry::HTTP_NET_VS_CACHE_ONSTOP_QBIG_NORMALPRI_V2, onStopDiff); } } uint32_t diskStorageSizeK = 0; rv = mCacheEntry->GetDiskStorageSizeInKB(&diskStorageSizeK); if (NS_FAILED(rv)) { return; } // No significant difference was observed between different sizes for // |onStartDiff| if (diskStorageSizeK < 256) { Telemetry::Accumulate(Telemetry::HTTP_NET_VS_CACHE_ONSTOP_SMALL_V2, onStopDiff); } else { Telemetry::Accumulate(Telemetry::HTTP_NET_VS_CACHE_ONSTOP_LARGE_V2, onStopDiff); } } NS_IMETHODIMP nsHttpChannel::Test_delayCacheEntryOpeningBy(int32_t aTimeout) { MOZ_ASSERT(NS_IsMainThread(), "Must be called on the main thread"); mCacheOpenDelay = aTimeout; return NS_OK; } NS_IMETHODIMP nsHttpChannel::Test_triggerDelayedOpenCacheEntry() { MOZ_ASSERT(NS_IsMainThread(), "Must be called on the main thread"); nsresult rv; if (!mCacheOpenDelay) { // No delay was set. return NS_ERROR_NOT_AVAILABLE; } if (!mCacheOpenFunc) { // There should be a runnable. return NS_ERROR_FAILURE; } if (mCacheOpenTimer) { rv = mCacheOpenTimer->Cancel(); if (NS_FAILED(rv)) { return rv; } mCacheOpenTimer = nullptr; } mCacheOpenDelay = 0; // Avoid re-entrancy issues by nulling our mCacheOpenFunc before calling it. std::function cacheOpenFunc = nullptr; std::swap(cacheOpenFunc, mCacheOpenFunc); cacheOpenFunc(this); return NS_OK; } nsresult nsHttpChannel::TriggerNetworkWithDelay(uint32_t aDelay) { MOZ_ASSERT(NS_IsMainThread(), "Must be called on the main thread"); LOG(("nsHttpChannel::TriggerNetworkWithDelay [this=%p, delay=%u]\n", this, aDelay)); if (mCanceled) { LOG((" channel was canceled.\n")); return mStatus; } // If a network request has already gone out, there is no point in // doing this again. if (mNetworkTriggered) { LOG((" network already triggered. Returning.\n")); return NS_OK; } if (!aDelay) { // We cannot call TriggerNetwork() directly here, because it would // cause performance regression in tp6 tests, see bug 1398847. return NS_DispatchToMainThread( NewRunnableMethod("net::nsHttpChannel::TriggerNetworkWithDelay", this, &nsHttpChannel::TriggerNetwork), NS_DISPATCH_NORMAL); } if (!mNetworkTriggerTimer) { mNetworkTriggerTimer = NS_NewTimer(); } mNetworkTriggerTimer->InitWithCallback(this, aDelay, nsITimer::TYPE_ONE_SHOT); return NS_OK; } nsresult nsHttpChannel::TriggerNetwork() { MOZ_ASSERT(NS_IsMainThread(), "Must be called on the main thread"); LOG(("nsHttpChannel::TriggerNetwork [this=%p]\n", this)); if (mCanceled) { LOG((" channel was canceled.\n")); return mStatus; } // If a network request has already gone out, there is no point in // doing this again. if (mNetworkTriggered) { LOG((" network already triggered. Returning.\n")); return NS_OK; } mNetworkTriggered = true; if (mNetworkTriggerTimer) { mNetworkTriggerTimer->Cancel(); mNetworkTriggerTimer = nullptr; } // If we are waiting for a proxy request, that means we can't trigger // the next step just yet. We need for mConnectionInfo to be non-null // before we call ContinueConnect. OnProxyAvailable will trigger // BeginConnect, and Connect will call ContinueConnect even if it's // for the cache callbacks. if (mProxyRequest) { LOG((" proxy request in progress. Delaying network trigger.\n")); mWaitingForProxy = true; return NS_OK; } // If |mCacheOpenFunc| is assigned, we're delaying opening the entry to // simulate racing. Although cache entry opening hasn't started yet, we're // actually racing, so we must set mRaceCacheWithNetwork to true now. if (mCacheOpenFunc) { mRaceCacheWithNetwork = true; } else if (AwaitingCacheCallbacks()) { mRaceCacheWithNetwork = StaticPrefs::network_http_rcwn_enabled(); } LOG((" triggering network\n")); return ContinueConnect(); } nsresult nsHttpChannel::MaybeRaceCacheWithNetwork() { nsresult rv; nsCOMPtr netLinkSvc = do_GetService(NS_NETWORK_LINK_SERVICE_CONTRACTID, &rv); NS_ENSURE_SUCCESS(rv, rv); uint32_t linkType; rv = netLinkSvc->GetLinkType(&linkType); NS_ENSURE_SUCCESS(rv, rv); if (!(linkType == nsINetworkLinkService::LINK_TYPE_UNKNOWN || linkType == nsINetworkLinkService::LINK_TYPE_ETHERNET || linkType == nsINetworkLinkService::LINK_TYPE_USB || linkType == nsINetworkLinkService::LINK_TYPE_WIFI)) { return NS_OK; } // Don't trigger the network if the load flags say so. if (mLoadFlags & (LOAD_ONLY_FROM_CACHE | LOAD_NO_NETWORK_IO)) { return NS_OK; } // We must not race if the channel has a failure status code. if (NS_FAILED(mStatus)) { return NS_OK; } // If a CORS Preflight is required we must not race. if (mRequireCORSPreflight && !mIsCorsPreflightDone) { return NS_OK; } if (CacheFileUtils::CachePerfStats::IsCacheSlow()) { // If the cache is slow, trigger the network request immediately. mRaceDelay = 0; } else { // Give cache a headstart of 3 times the average cache entry open time. mRaceDelay = CacheFileUtils::CachePerfStats::GetAverage( CacheFileUtils::CachePerfStats::ENTRY_OPEN, true) * 3; // We use microseconds in CachePerfStats but we need milliseconds // for TriggerNetwork. mRaceDelay /= 1000; } mRaceDelay = clamped( mRaceDelay, StaticPrefs::network_http_rcwn_min_wait_before_racing_ms(), StaticPrefs::network_http_rcwn_max_wait_before_racing_ms()); MOZ_ASSERT(StaticPrefs::network_http_rcwn_enabled(), "The pref must be turned on."); LOG(("nsHttpChannel::MaybeRaceCacheWithNetwork [this=%p, delay=%u]\n", this, mRaceDelay)); return TriggerNetworkWithDelay(mRaceDelay); } NS_IMETHODIMP nsHttpChannel::Test_triggerNetwork(int32_t aTimeout) { MOZ_ASSERT(NS_IsMainThread(), "Must be called on the main thread"); return TriggerNetworkWithDelay(aTimeout); } NS_IMETHODIMP nsHttpChannel::Notify(nsITimer* aTimer) { RefPtr self(this); if (aTimer == mCacheOpenTimer) { return Test_triggerDelayedOpenCacheEntry(); } else if (aTimer == mNetworkTriggerTimer) { return TriggerNetwork(); } else { MOZ_CRASH("Unknown timer"); } return NS_OK; } bool nsHttpChannel::EligibleForTailing() { if (!(mClassOfService & nsIClassOfService::Tail)) { return false; } if (mClassOfService & (nsIClassOfService::UrgentStart | nsIClassOfService::Leader | nsIClassOfService::TailForbidden)) { return false; } if (mClassOfService & nsIClassOfService::Unblocked && !(mClassOfService & nsIClassOfService::TailAllowed)) { return false; } if (IsNavigation()) { return false; } return true; } bool nsHttpChannel::WaitingForTailUnblock() { nsresult rv; if (!gHttpHandler->IsTailBlockingEnabled()) { LOG(("nsHttpChannel %p tail-blocking disabled", this)); return false; } if (!EligibleForTailing()) { LOG(("nsHttpChannel %p not eligible for tail-blocking", this)); AddAsNonTailRequest(); return false; } if (!EnsureRequestContext()) { LOG(("nsHttpChannel %p no request context", this)); return false; } LOG(("nsHttpChannel::WaitingForTailUnblock this=%p, rc=%p", this, mRequestContext.get())); bool blocked; rv = mRequestContext->IsContextTailBlocked(this, &blocked); if (NS_FAILED(rv)) { return false; } LOG((" blocked=%d", blocked)); return blocked; } //----------------------------------------------------------------------------- // nsHttpChannel::nsIRequestTailUnblockCallback //----------------------------------------------------------------------------- // Must be implemented in the leaf class because we don't have // AsyncAbort in HttpBaseChannel. NS_IMETHODIMP nsHttpChannel::OnTailUnblock(nsresult rv) { LOG(("nsHttpChannel::OnTailUnblock this=%p rv=%" PRIx32 " rc=%p", this, static_cast(rv), mRequestContext.get())); MOZ_RELEASE_ASSERT(mOnTailUnblock); if (NS_FAILED(mStatus)) { rv = mStatus; } if (NS_SUCCEEDED(rv)) { auto callback = mOnTailUnblock; mOnTailUnblock = nullptr; rv = (this->*callback)(); } if (NS_FAILED(rv)) { CloseCacheEntry(false); return AsyncAbort(rv); } return NS_OK; } void nsHttpChannel::SetWarningReporter( HttpChannelSecurityWarningReporter* aReporter) { LOG(("nsHttpChannel [this=%p] SetWarningReporter [%p]", this, aReporter)); mWarningReporter = aReporter; } HttpChannelSecurityWarningReporter* nsHttpChannel::GetWarningReporter() { LOG(("nsHttpChannel [this=%p] GetWarningReporter [%p]", this, mWarningReporter.get())); return mWarningReporter.get(); } namespace { class CopyNonDefaultHeaderVisitor final : public nsIHttpHeaderVisitor { nsCOMPtr mTarget; ~CopyNonDefaultHeaderVisitor() = default; NS_IMETHOD VisitHeader(const nsACString& aHeader, const nsACString& aValue) override { if (aValue.IsEmpty()) { return mTarget->SetEmptyRequestHeader(aHeader); } else { return mTarget->SetRequestHeader(aHeader, aValue, false /* merge */); } } public: explicit CopyNonDefaultHeaderVisitor(nsIHttpChannel* aTarget) : mTarget(aTarget) { MOZ_DIAGNOSTIC_ASSERT(mTarget); } NS_DECL_ISUPPORTS }; NS_IMPL_ISUPPORTS(CopyNonDefaultHeaderVisitor, nsIHttpHeaderVisitor) } // anonymous namespace nsresult nsHttpChannel::RedirectToInterceptedChannel() { nsCOMPtr controller; GetCallback(controller); RefPtr intercepted = InterceptedHttpChannel::CreateForInterception( mChannelCreationTime, mChannelCreationTimestamp, mAsyncOpenTime); nsContentPolicyType type = mLoadInfo->GetExternalContentPolicyType(); nsresult rv = intercepted->Init( mURI, mCaps, static_cast(mProxyInfo.get()), mProxyResolveFlags, mProxyURI, mChannelId, type); nsCOMPtr redirectLoadInfo = CloneLoadInfoForRedirect(mURI, nsIChannelEventSink::REDIRECT_INTERNAL); intercepted->SetLoadInfo(redirectLoadInfo); rv = SetupReplacementChannel(mURI, intercepted, true, nsIChannelEventSink::REDIRECT_INTERNAL); NS_ENSURE_SUCCESS(rv, rv); // Some APIs, like fetch(), allow content to set non-standard headers. // Normally these APIs are responsible for copying these headers across // redirects. In the e10s parent-side intercept case, though, we currently // "hide" the internal redirect to the InterceptedHttpChannel. So the // fetch() API does not have the opportunity to move headers over. // Therefore, we do it automatically here. // // Once child-side interception is removed and the internal redirect no // longer needs to be "hidden", then this header copying code can be // removed. if (ServiceWorkerParentInterceptEnabled()) { nsCOMPtr visitor = new CopyNonDefaultHeaderVisitor(intercepted); rv = VisitNonDefaultRequestHeaders(visitor); NS_ENSURE_SUCCESS(rv, rv); } mRedirectChannel = intercepted; PushRedirectAsyncFunc(&nsHttpChannel::ContinueAsyncRedirectChannelToURI); rv = gHttpHandler->AsyncOnChannelRedirect( this, intercepted, nsIChannelEventSink::REDIRECT_INTERNAL); if (NS_SUCCEEDED(rv)) { rv = WaitForRedirectCallback(); } if (NS_FAILED(rv)) { AutoRedirectVetoNotifier notifier(this); PopRedirectAsyncFunc(&nsHttpChannel::ContinueAsyncRedirectChannelToURI); } return rv; } void nsHttpChannel::ReEvaluateReferrerAfterTrackingStatusIsKnown() { nsCOMPtr cjs; if (mLoadInfo) { Unused << mLoadInfo->GetCookieJarSettings(getter_AddRefs(cjs)); } if (!cjs) { cjs = net::CookieJarSettings::Create(); } if (cjs->GetRejectThirdPartyContexts()) { bool isPrivate = mLoadInfo->GetOriginAttributes().mPrivateBrowsingId > 0; // If our referrer has been set before, and our referrer policy is unset // (default policy) if we thought the channel wasn't a third-party // tracking channel, we may need to set our referrer with referrer policy // once again to ensure our defaults properly take effect now. if (mReferrerInfo) { ReferrerInfo* referrerInfo = static_cast(mReferrerInfo.get()); if (referrerInfo->IsPolicyOverrided() && referrerInfo->ReferrerPolicy() == ReferrerInfo::GetDefaultReferrerPolicy(nullptr, nullptr, isPrivate)) { nsCOMPtr newReferrerInfo = referrerInfo->CloneWithNewPolicy(ReferrerPolicy::_empty); // The arguments passed to SetReferrerInfoInternal here should mirror // the arguments passed in // HttpChannelChild::RecvOverrideReferrerInfoDuringBeginConnect(). SetReferrerInfoInternal(newReferrerInfo, false, true, true); nsCOMPtr parentChannel; NS_QueryNotificationCallbacks(this, parentChannel); RefPtr httpParent = do_QueryObject(parentChannel); if (httpParent) { httpParent->OverrideReferrerInfoDuringBeginConnect(newReferrerInfo); } } } } } namespace { class BackgroundRevalidatingListener : public nsIStreamListener { NS_DECL_ISUPPORTS NS_DECL_NSISTREAMLISTENER NS_DECL_NSIREQUESTOBSERVER private: virtual ~BackgroundRevalidatingListener() = default; }; NS_IMETHODIMP BackgroundRevalidatingListener::OnStartRequest(nsIRequest* request) { return NS_OK; } NS_IMETHODIMP BackgroundRevalidatingListener::OnDataAvailable(nsIRequest* request, nsIInputStream* input, uint64_t offset, uint32_t count) { uint32_t bytesRead = 0; return input->ReadSegments(NS_DiscardSegment, nullptr, count, &bytesRead); } NS_IMETHODIMP BackgroundRevalidatingListener::OnStopRequest(nsIRequest* request, nsresult status) { if (NS_FAILED(status)) { return status; } nsCOMPtr channel(do_QueryInterface(request)); if (gHttpHandler) { gHttpHandler->OnBackgroundRevalidation(channel); } return NS_OK; } NS_IMPL_ISUPPORTS(BackgroundRevalidatingListener, nsIStreamListener, nsIRequestObserver) } // namespace void nsHttpChannel::PerformBackgroundCacheRevalidation() { if (!StaticPrefs::network_http_stale_while_revalidate_enabled()) { return; } // This is a channel doing a revalidation. It shouldn't do it again. if (mStaleRevalidation) { return; } LOG(("nsHttpChannel::PerformBackgroundCacheRevalidation %p", this)); Unused << NS_DispatchToMainThreadQueue( NewIdleRunnableMethod( "nsHttpChannel::PerformBackgroundCacheRevalidation", this, &nsHttpChannel::PerformBackgroundCacheRevalidationNow), EventQueuePriority::Idle); } void nsHttpChannel::PerformBackgroundCacheRevalidationNow() { LOG(("nsHttpChannel::PerformBackgroundCacheRevalidationNow %p", this)); MOZ_ASSERT(NS_IsMainThread()); nsresult rv; nsLoadFlags loadFlags = mLoadFlags | LOAD_ONLY_IF_MODIFIED | VALIDATE_ALWAYS | LOAD_BACKGROUND | LOAD_BYPASS_SERVICE_WORKER; nsCOMPtr validatingChannel; rv = NS_NewChannelInternal(getter_AddRefs(validatingChannel), mURI, mLoadInfo, nullptr /* performance storage */, mLoadGroup, mCallbacks, loadFlags); if (NS_FAILED(rv)) { LOG((" failed to created the channel, rv=0x%08x", static_cast(rv))); return; } nsCOMPtr priority(do_QueryInterface(validatingChannel)); if (priority) { priority->SetPriority(nsISupportsPriority::PRIORITY_LOWEST); } nsCOMPtr cos(do_QueryInterface(validatingChannel)); if (cos) { cos->AddClassFlags(nsIClassOfService::Tail); } RefPtr httpChan = do_QueryObject(validatingChannel); if (httpChan) { httpChan->mStaleRevalidation = true; } RefPtr listener = new BackgroundRevalidatingListener(); rv = validatingChannel->AsyncOpen(listener); if (NS_FAILED(rv)) { LOG((" failed to open the channel, rv=0x%08x", static_cast(rv))); return; } LOG((" %p is re-validating with a new channel %p", this, validatingChannel.get())); } } // namespace net } // namespace mozilla