/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ /* 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/. */ #include "mozilla/DebugOnly.h" #include "base/basictypes.h" #include "base/shared_memory.h" #include "ContentParent.h" #include "TabParent.h" #if defined(ANDROID) || defined(LINUX) # include # include #endif #include "chrome/common/process_watcher.h" #include "mozilla/a11y/PDocAccessible.h" #include "GeckoProfiler.h" #include "GMPServiceParent.h" #include "HandlerServiceParent.h" #include "IHistory.h" #include "imgIContainer.h" #if defined(XP_WIN) && defined(ACCESSIBILITY) #include "mozilla/a11y/AccessibleWrap.h" #include "mozilla/a11y/Compatibility.h" #endif #include "mozilla/BasePrincipal.h" #include "mozilla/ClearOnShutdown.h" #include "mozilla/StyleSheetInlines.h" #include "mozilla/DataStorage.h" #include "mozilla/devtools/HeapSnapshotTempFileHelperParent.h" #include "mozilla/docshell/OfflineCacheUpdateParent.h" #include "mozilla/dom/ClientManager.h" #include "mozilla/dom/ClientOpenWindowOpActors.h" #include "mozilla/dom/DataTransfer.h" #include "mozilla/dom/Element.h" #include "mozilla/dom/File.h" #include "mozilla/dom/FileCreatorHelper.h" #include "mozilla/dom/FileSystemSecurity.h" #include "mozilla/dom/IPCBlobUtils.h" #include "mozilla/dom/ExternalHelperAppParent.h" #include "mozilla/dom/GetFilesHelper.h" #include "mozilla/dom/GeolocationBinding.h" #include "mozilla/dom/MemoryReportRequest.h" #include "mozilla/dom/Notification.h" #include "mozilla/dom/PContentBridgeParent.h" #include "mozilla/dom/PContentPermissionRequestParent.h" #include "mozilla/dom/PCycleCollectWithLogsParent.h" #include "mozilla/dom/ServiceWorkerRegistrar.h" #include "mozilla/dom/power/PowerManagerService.h" #include "mozilla/dom/Permissions.h" #include "mozilla/dom/PresentationParent.h" #include "mozilla/dom/PPresentationParent.h" #include "mozilla/dom/PushNotifier.h" #include "mozilla/dom/quota/QuotaManagerService.h" #include "mozilla/dom/URLClassifierParent.h" #include "mozilla/embedding/printingui/PrintingParent.h" #include "mozilla/extensions/StreamFilterParent.h" #include "mozilla/gfx/gfxVars.h" #include "mozilla/gfx/GPUProcessManager.h" #include "mozilla/hal_sandbox/PHalParent.h" #include "mozilla/ipc/BackgroundChild.h" #include "mozilla/ipc/BackgroundParent.h" #include "mozilla/ipc/CrashReporterHost.h" #include "mozilla/ipc/FileDescriptorUtils.h" #include "mozilla/ipc/PChildToParentStreamParent.h" #include "mozilla/ipc/TestShellParent.h" #include "mozilla/ipc/IPCStreamUtils.h" #include "mozilla/intl/LocaleService.h" #include "mozilla/jsipc/CrossProcessObjectWrappers.h" #include "mozilla/layers/PAPZParent.h" #include "mozilla/layers/CompositorThread.h" #include "mozilla/layers/ImageBridgeParent.h" #include "mozilla/layers/LayerTreeOwnerTracker.h" #include "mozilla/layout/RenderFrameParent.h" #include "mozilla/loader/ScriptCacheActors.h" #include "mozilla/LoginReputationIPC.h" #include "mozilla/LookAndFeel.h" #include "mozilla/media/MediaParent.h" #include "mozilla/Move.h" #include "mozilla/net/NeckoParent.h" #include "mozilla/net/CookieServiceParent.h" #include "mozilla/net/PCookieServiceParent.h" #include "mozilla/plugins/PluginBridge.h" #include "mozilla/Preferences.h" #include "mozilla/ProcessHangMonitor.h" #include "mozilla/ProcessHangMonitorIPC.h" #include "mozilla/Scheduler.h" #include "mozilla/ScopeExit.h" #include "mozilla/ScriptPreloader.h" #include "mozilla/Services.h" #include "mozilla/StaticPtr.h" #include "mozilla/Telemetry.h" #include "mozilla/TelemetryIPC.h" #include "mozilla/WebBrowserPersistDocumentParent.h" #include "mozilla/widget/ScreenManager.h" #include "mozilla/Unused.h" #include "mozilla/HangDetails.h" #include "nsAnonymousTemporaryFile.h" #include "nsAppRunner.h" #include "nsCDefaultURIFixup.h" #include "nsCExternalHandlerService.h" #include "nsCOMPtr.h" #include "nsChromeRegistryChrome.h" #include "nsConsoleMessage.h" #include "nsConsoleService.h" #include "nsContentUtils.h" #include "nsDebugImpl.h" #include "nsFrameLoader.h" #include "nsFrameMessageManager.h" #include "nsHashPropertyBag.h" #include "nsIAlertsService.h" #include "nsIClipboard.h" #include "nsICookie.h" #include "nsContentPermissionHelper.h" #include "nsIContentProcess.h" #include "nsICycleCollectorListener.h" #include "nsIDocShellTreeOwner.h" #include "nsIDocument.h" #include "nsIDOMGeoGeolocation.h" #include "nsIDOMGeoPositionError.h" #include "nsIDragService.h" #include "mozilla/dom/WakeLock.h" #include "nsIDOMWindow.h" #include "nsIExternalProtocolService.h" #include "nsIFormProcessor.h" #include "nsIGfxInfo.h" #include "nsIIdleService.h" #include "nsIInterfaceRequestorUtils.h" #include "nsIMemoryInfoDumper.h" #include "nsIMemoryReporter.h" #include "nsIMozBrowserFrame.h" #include "nsIMutable.h" #include "nsIObserverService.h" #include "nsIParentChannel.h" #include "nsIPresShell.h" #include "nsIRemoteWindowContext.h" #include "nsIScriptError.h" #include "nsIScriptSecurityManager.h" #include "nsISiteSecurityService.h" #include "nsISound.h" #include "nsISpellChecker.h" #include "nsISupportsPrimitives.h" #include "nsITimer.h" #include "nsIURIFixup.h" #include "nsIURL.h" #include "nsIDocShellTreeOwner.h" #include "nsIXULWindow.h" #include "nsIDOMChromeWindow.h" #include "nsIWindowWatcher.h" #include "nsPIWindowWatcher.h" #include "nsThread.h" #include "nsWindowWatcher.h" #include "nsIXULRuntime.h" #include "mozilla/dom/ChromeMessageBroadcaster.h" #include "mozilla/dom/nsMixedContentBlocker.h" #include "nsMemoryInfoDumper.h" #include "nsMemoryReporterManager.h" #include "nsScriptError.h" #include "nsServiceManagerUtils.h" #include "nsStyleSheetService.h" #include "nsThreadUtils.h" #include "nsToolkitCompsCID.h" #include "nsWidgetsCID.h" #include "PreallocatedProcessManager.h" #include "ProcessPriorityManager.h" #include "SandboxHal.h" #include "SourceSurfaceRawData.h" #include "TabParent.h" #include "URIUtils.h" #include "nsIWebBrowserChrome.h" #include "nsIDocShell.h" #include "nsDocShell.h" #include "nsOpenURIInFrameParams.h" #include "mozilla/net/NeckoMessageUtils.h" #include "gfxPlatform.h" #include "gfxPrefs.h" #include "prio.h" #include "private/pprio.h" #include "ContentProcessManager.h" #include "mozilla/dom/ipc/StructuredCloneData.h" #include "mozilla/PerformanceUtils.h" #include "mozilla/psm/PSMContentListener.h" #include "nsPluginHost.h" #include "nsPluginTags.h" #include "nsIBlocklistService.h" #include "mozilla/StyleSheet.h" #include "mozilla/StyleSheetInlines.h" #include "nsHostObjectProtocolHandler.h" #include "nsICaptivePortalService.h" #include "nsIObjectLoadingContent.h" #include "nsIBidiKeyboard.h" #include "nsLayoutStylesheetCache.h" #include "mozilla/Sprintf.h" #ifdef MOZ_WEBRTC #include "signaling/src/peerconnection/WebrtcGlobalParent.h" #endif #if defined(ANDROID) || defined(LINUX) #include "nsSystemInfo.h" #endif #if defined(XP_LINUX) #include "mozilla/Hal.h" #endif #ifdef ANDROID # include "gfxAndroidPlatform.h" #endif # include "nsPermissionManager.h" #ifdef MOZ_WIDGET_ANDROID # include "AndroidBridge.h" #endif #ifdef MOZ_WIDGET_GTK #include #endif #include "mozilla/RemoteSpellCheckEngineParent.h" #include "Crypto.h" #ifdef MOZ_WEBSPEECH #include "mozilla/dom/SpeechSynthesisParent.h" #endif #if defined(MOZ_CONTENT_SANDBOX) #include "mozilla/SandboxSettings.h" #if defined(XP_LINUX) #include "mozilla/SandboxInfo.h" #include "mozilla/SandboxBroker.h" #include "mozilla/SandboxBrokerPolicyFactory.h" #endif #endif #ifdef MOZ_TOOLKIT_SEARCH #include "nsIBrowserSearchService.h" #endif #ifdef XP_WIN #include "mozilla/audio/AudioNotificationSender.h" #include "mozilla/widget/AudioSession.h" #endif #ifdef ACCESSIBILITY #include "nsAccessibilityService.h" #endif #ifdef MOZ_GECKO_PROFILER #include "nsIProfiler.h" #include "ProfilerParent.h" #endif #ifdef MOZ_CODE_COVERAGE #include "mozilla/CodeCoverageHandler.h" #endif // For VP9Benchmark::sBenchmarkFpsPref #include "Benchmark.h" static NS_DEFINE_CID(kCClipboardCID, NS_CLIPBOARD_CID); using base::KillProcess; using namespace CrashReporter; using namespace mozilla::dom::power; using namespace mozilla::media; using namespace mozilla::embedding; using namespace mozilla::gfx; using namespace mozilla::gmp; using namespace mozilla::hal; using namespace mozilla::ipc; using namespace mozilla::intl; using namespace mozilla::layers; using namespace mozilla::layout; using namespace mozilla::net; using namespace mozilla::jsipc; using namespace mozilla::psm; using namespace mozilla::widget; using mozilla::loader::PScriptCacheParent; using mozilla::Telemetry::ProcessID; // XXX Workaround for bug 986973 to maintain the existing broken semantics template<> struct nsIConsoleService::COMTypeInfo { static const nsIID kIID; }; const nsIID nsIConsoleService::COMTypeInfo::kIID = NS_ICONSOLESERVICE_IID; namespace mozilla { namespace CubebUtils { extern FileDescriptor CreateAudioIPCConnection(); } namespace dom { #define NS_IPC_IOSERVICE_SET_OFFLINE_TOPIC "ipc:network:set-offline" #define NS_IPC_IOSERVICE_SET_CONNECTIVITY_TOPIC "ipc:network:set-connectivity" // IPC receiver for remote GC/CC logging. class CycleCollectWithLogsParent final : public PCycleCollectWithLogsParent { public: ~CycleCollectWithLogsParent() { MOZ_COUNT_DTOR(CycleCollectWithLogsParent); } static bool AllocAndSendConstructor(ContentParent* aManager, bool aDumpAllTraces, nsICycleCollectorLogSink* aSink, nsIDumpGCAndCCLogsCallback* aCallback) { CycleCollectWithLogsParent *actor; FILE* gcLog; FILE* ccLog; nsresult rv; actor = new CycleCollectWithLogsParent(aSink, aCallback); rv = actor->mSink->Open(&gcLog, &ccLog); if (NS_WARN_IF(NS_FAILED(rv))) { delete actor; return false; } return aManager-> SendPCycleCollectWithLogsConstructor(actor, aDumpAllTraces, FILEToFileDescriptor(gcLog), FILEToFileDescriptor(ccLog)); } private: virtual mozilla::ipc::IPCResult RecvCloseGCLog() override { Unused << mSink->CloseGCLog(); return IPC_OK(); } virtual mozilla::ipc::IPCResult RecvCloseCCLog() override { Unused << mSink->CloseCCLog(); return IPC_OK(); } virtual mozilla::ipc::IPCResult Recv__delete__() override { // Report completion to mCallback only on successful // completion of the protocol. nsCOMPtr gcLog, ccLog; mSink->GetGcLog(getter_AddRefs(gcLog)); mSink->GetCcLog(getter_AddRefs(ccLog)); Unused << mCallback->OnDump(gcLog, ccLog, /* parent = */ false); return IPC_OK(); } virtual void ActorDestroy(ActorDestroyReason aReason) override { // If the actor is unexpectedly destroyed, we deliberately // don't call Close[GC]CLog on the sink, because the logs may // be incomplete. See also the nsCycleCollectorLogSinkToFile // implementaiton of those methods, and its destructor. } CycleCollectWithLogsParent(nsICycleCollectorLogSink *aSink, nsIDumpGCAndCCLogsCallback *aCallback) : mSink(aSink), mCallback(aCallback) { MOZ_COUNT_CTOR(CycleCollectWithLogsParent); } nsCOMPtr mSink; nsCOMPtr mCallback; }; // A memory reporter for ContentParent objects themselves. class ContentParentsMemoryReporter final : public nsIMemoryReporter { ~ContentParentsMemoryReporter() {} public: NS_DECL_ISUPPORTS NS_DECL_NSIMEMORYREPORTER }; NS_IMPL_ISUPPORTS(ContentParentsMemoryReporter, nsIMemoryReporter) NS_IMETHODIMP ContentParentsMemoryReporter::CollectReports( nsIHandleReportCallback* aHandleReport, nsISupports* aData, bool aAnonymize) { AutoTArray cps; ContentParent::GetAllEvenIfDead(cps); for (uint32_t i = 0; i < cps.Length(); i++) { ContentParent* cp = cps[i]; MessageChannel* channel = cp->GetIPCChannel(); nsString friendlyName; cp->FriendlyName(friendlyName, aAnonymize); cp->AddRef(); nsrefcnt refcnt = cp->Release(); const char* channelStr = "no channel"; uint32_t numQueuedMessages = 0; if (channel) { if (channel->Unsound_IsClosed()) { channelStr = "closed channel"; } else { channelStr = "open channel"; } numQueuedMessages = channel->Unsound_NumQueuedMessages(); } nsPrintfCString path("queued-ipc-messages/content-parent" "(%s, pid=%d, %s, 0x%p, refcnt=%" PRIuPTR ")", NS_ConvertUTF16toUTF8(friendlyName).get(), cp->Pid(), channelStr, static_cast(cp), refcnt); NS_NAMED_LITERAL_CSTRING(desc, "The number of unset IPC messages held in this ContentParent's " "channel. A large value here might indicate that we're leaking " "messages. Similarly, a ContentParent object for a process that's no " "longer running could indicate that we're leaking ContentParents."); aHandleReport->Callback(/* process */ EmptyCString(), path, KIND_OTHER, UNITS_COUNT, numQueuedMessages, desc, aData); } return NS_OK; } nsClassHashtable>* ContentParent::sBrowserContentParents; namespace { class ScriptableCPInfo final : public nsIContentProcessInfo { public: explicit ScriptableCPInfo(ContentParent* aParent) : mContentParent(aParent) { MOZ_ASSERT(mContentParent); } NS_DECL_ISUPPORTS NS_DECL_NSICONTENTPROCESSINFO void ProcessDied() { mContentParent = nullptr; } private: ~ScriptableCPInfo() { MOZ_ASSERT(!mContentParent, "must call ProcessDied"); } ContentParent* mContentParent; }; NS_IMPL_ISUPPORTS(ScriptableCPInfo, nsIContentProcessInfo) NS_IMETHODIMP ScriptableCPInfo::GetIsAlive(bool* aIsAlive) { *aIsAlive = mContentParent != nullptr; return NS_OK; } NS_IMETHODIMP ScriptableCPInfo::GetProcessId(int32_t* aPID) { if (!mContentParent) { *aPID = -1; return NS_ERROR_NOT_INITIALIZED; } *aPID = mContentParent->Pid(); if (*aPID == -1) { return NS_ERROR_FAILURE; } return NS_OK; } NS_IMETHODIMP ScriptableCPInfo::GetOpener(nsIContentProcessInfo** aInfo) { *aInfo = nullptr; if (!mContentParent) { return NS_ERROR_NOT_INITIALIZED; } if (ContentParent* opener = mContentParent->Opener()) { nsCOMPtr info = opener->ScriptableHelper(); info.forget(aInfo); } return NS_OK; } NS_IMETHODIMP ScriptableCPInfo::GetTabCount(int32_t* aTabCount) { if (!mContentParent) { return NS_ERROR_NOT_INITIALIZED; } ContentProcessManager* cpm = ContentProcessManager::GetSingleton(); *aTabCount = cpm->GetTabParentCountByProcessId(mContentParent->ChildID()); return NS_OK; } NS_IMETHODIMP ScriptableCPInfo::GetMessageManager(nsISupports** aMessenger) { *aMessenger = nullptr; if (!mContentParent) { return NS_ERROR_NOT_INITIALIZED; } RefPtr manager = mContentParent->GetMessageManager(); manager.forget(aMessenger); return NS_OK; } ProcessID GetTelemetryProcessID(const nsAString& remoteType) { // OOP WebExtensions run in a content process. // For Telemetry though we want to break out collected data from the WebExtensions process into // a separate bucket, to make sure we can analyze it separately and avoid skewing normal content // process metrics. return remoteType.EqualsLiteral(EXTENSION_REMOTE_TYPE) ? ProcessID::Extension : ProcessID::Content; } } // anonymous namespace nsDataHashtable* ContentParent::sJSPluginContentParents; nsTArray* ContentParent::sPrivateContent; StaticAutoPtr > ContentParent::sContentParents; #if defined(XP_LINUX) && defined(MOZ_CONTENT_SANDBOX) UniquePtr ContentParent::sSandboxBrokerPolicyFactory; #endif uint64_t ContentParent::sNextTabParentId = 0; nsDataHashtable ContentParent::sNextTabParents; // This is true when subprocess launching is enabled. This is the // case between StartUp() and ShutDown(). static bool sCanLaunchSubprocesses; // Set to true if the DISABLE_UNSAFE_CPOW_WARNINGS environment variable is // set. static bool sDisableUnsafeCPOWWarnings = false; // The first content child has ID 1, so the chrome process can have ID 0. static uint64_t gContentChildID = 1; static const char* sObserverTopics[] = { "xpcom-shutdown", "profile-before-change", NS_IPC_IOSERVICE_SET_OFFLINE_TOPIC, NS_IPC_IOSERVICE_SET_CONNECTIVITY_TOPIC, NS_IPC_CAPTIVE_PORTAL_SET_STATE, "memory-pressure", "child-gc-request", "child-cc-request", "child-mmu-request", "child-ghost-request", "last-pb-context-exited", "file-watcher-update", #ifdef ACCESSIBILITY "a11y-init-or-shutdown", #endif "cacheservice:empty-cache", "intl:app-locales-changed", "intl:requested-locales-changed", "cookie-changed", "private-cookie-changed", }; // PreallocateProcess is called by the PreallocatedProcessManager. // ContentParent then takes this process back within GetNewOrUsedBrowserProcess. /*static*/ already_AddRefed ContentParent::PreallocateProcess() { RefPtr process = new ContentParent(/* aOpener = */ nullptr, NS_LITERAL_STRING(DEFAULT_REMOTE_TYPE)); PreallocatedProcessManager::AddBlocker(process); if (!process->LaunchSubprocess(PROCESS_PRIORITY_PREALLOC)) { return nullptr; } return process.forget(); } /*static*/ void ContentParent::StartUp() { // We could launch sub processes from content process // FIXME Bug 1023701 - Stop using ContentParent static methods in // child process sCanLaunchSubprocesses = true; if (!XRE_IsParentProcess()) { return; } // Note: This reporter measures all ContentParents. RegisterStrongMemoryReporter(new ContentParentsMemoryReporter()); BackgroundChild::Startup(); ClientManager::Startup(); sDisableUnsafeCPOWWarnings = PR_GetEnv("DISABLE_UNSAFE_CPOW_WARNINGS"); #if defined(XP_LINUX) && defined(MOZ_CONTENT_SANDBOX) sSandboxBrokerPolicyFactory = MakeUnique(); #endif } /*static*/ void ContentParent::ShutDown() { // No-op for now. We rely on normal process shutdown and // ClearOnShutdown() to clean up our state. sCanLaunchSubprocesses = false; #if defined(XP_LINUX) && defined(MOZ_CONTENT_SANDBOX) sSandboxBrokerPolicyFactory = nullptr; #endif } /*static*/ uint32_t ContentParent::GetPoolSize(const nsAString& aContentProcessType) { if (!sBrowserContentParents) { return 0; } nsTArray* parents = sBrowserContentParents->Get(aContentProcessType); return parents ? parents->Length() : 0; } /*static*/ nsTArray& ContentParent::GetOrCreatePool(const nsAString& aContentProcessType) { if (!sBrowserContentParents) { sBrowserContentParents = new nsClassHashtable>; } return *sBrowserContentParents->LookupOrAdd(aContentProcessType); } /*static*/ uint32_t ContentParent::GetMaxProcessCount(const nsAString& aContentProcessType) { if (aContentProcessType.EqualsLiteral("web")) { return GetMaxWebProcessCount(); } nsAutoCString processCountPref("dom.ipc.processCount."); processCountPref.Append(NS_ConvertUTF16toUTF8(aContentProcessType)); int32_t maxContentParents; if (NS_FAILED(Preferences::GetInt(processCountPref.get(), &maxContentParents))) { maxContentParents = Preferences::GetInt("dom.ipc.processCount", 1); } if (maxContentParents < 1) { maxContentParents = 1; } return static_cast(maxContentParents); } /*static*/ bool ContentParent::IsMaxProcessCountReached(const nsAString& aContentProcessType) { return GetPoolSize(aContentProcessType) >= GetMaxProcessCount(aContentProcessType); } /*static*/ void ContentParent::ReleaseCachedProcesses() { if (!GetPoolSize(NS_LITERAL_STRING(DEFAULT_REMOTE_TYPE))) { return; } // We might want to extend this for other process types as well in the future... nsTArray& contentParents = GetOrCreatePool(NS_LITERAL_STRING(DEFAULT_REMOTE_TYPE)); ContentProcessManager* cpm = ContentProcessManager::GetSingleton(); nsTArray toRelease; // Shuting down these processes will change the array so let's use another array for the removal. for (auto* cp : contentParents) { nsTArray tabIds = cpm->GetTabParentsByProcessId(cp->mChildID); if (!tabIds.Length()) { toRelease.AppendElement(cp); } } for (auto* cp : toRelease) { // Start a soft shutdown. cp->ShutDownProcess(SEND_SHUTDOWN_MESSAGE); // Make sure we don't select this process for new tabs. cp->MarkAsDead(); // Make sure that this process is no longer accessible from JS by its message manager. cp->ShutDownMessageManager(); } } /*static*/ already_AddRefed ContentParent::MinTabSelect(const nsTArray& aContentParents, ContentParent* aOpener, int32_t aMaxContentParents) { uint32_t maxSelectable = std::min(static_cast(aContentParents.Length()), static_cast(aMaxContentParents)); uint32_t min = INT_MAX; RefPtr candidate; ContentProcessManager* cpm = ContentProcessManager::GetSingleton(); for (uint32_t i = 0; i < maxSelectable; i++) { ContentParent* p = aContentParents[i]; NS_ASSERTION(p->IsAlive(), "Non-alive contentparent in sBrowserContentParents?"); if (p->mOpener == aOpener) { uint32_t tabCount = cpm->GetTabParentCountByProcessId(p->ChildID()); if (tabCount < min) { candidate = p; min = tabCount; } } } return candidate.forget(); } /*static*/ already_AddRefed ContentParent::GetNewOrUsedBrowserProcess(const nsAString& aRemoteType, ProcessPriority aPriority, ContentParent* aOpener, bool aPreferUsed) { nsTArray& contentParents = GetOrCreatePool(aRemoteType); uint32_t maxContentParents = GetMaxProcessCount(aRemoteType); if (aRemoteType.EqualsLiteral(LARGE_ALLOCATION_REMOTE_TYPE)) { // We never want to re-use Large-Allocation processes. if (contentParents.Length() >= maxContentParents) { return GetNewOrUsedBrowserProcess(NS_LITERAL_STRING(DEFAULT_REMOTE_TYPE), aPriority, aOpener); } } else { uint32_t numberOfParents = contentParents.Length(); nsTArray infos(numberOfParents); for (auto* cp : contentParents) { infos.AppendElement(cp->mScriptableHelper); } if (aPreferUsed && numberOfParents) { // For the preloaded browser we don't want to create a new process but reuse an // existing one. maxContentParents = numberOfParents; } nsCOMPtr cpp = do_GetService("@mozilla.org/ipc/processselector;1"); nsIContentProcessInfo* openerInfo = aOpener ? aOpener->mScriptableHelper.get() : nullptr; int32_t index; if (cpp && NS_SUCCEEDED(cpp->ProvideProcess(aRemoteType, openerInfo, infos.Elements(), infos.Length(), maxContentParents, &index))) { // If the provider returned an existing ContentParent, use that one. if (0 <= index && static_cast(index) <= maxContentParents) { RefPtr retval = contentParents[index]; return retval.forget(); } } else { // If there was a problem with the JS chooser, fall back to a random // selection. NS_WARNING("nsIContentProcessProvider failed to return a process"); RefPtr random; if (contentParents.Length() >= maxContentParents && (random = MinTabSelect(contentParents, aOpener, maxContentParents))) { return random.forget(); } } // Try to take the preallocated process only for the default process type. // The preallocated process manager might not had the chance yet to release the process // after a very recent ShutDownProcess, let's make sure we don't try to reuse a process // that is being shut down. RefPtr p; if (aRemoteType.EqualsLiteral(DEFAULT_REMOTE_TYPE) && (p = PreallocatedProcessManager::Take()) && !p->mShutdownPending) { // For pre-allocated process we have not set the opener yet. p->mOpener = aOpener; contentParents.AppendElement(p); p->mActivateTS = TimeStamp::Now(); return p.forget(); } } // Create a new process from scratch. RefPtr p = new ContentParent(aOpener, aRemoteType); // Until the new process is ready let's not allow to start up any preallocated processes. PreallocatedProcessManager::AddBlocker(p); if (!p->LaunchSubprocess(aPriority)) { return nullptr; } contentParents.AppendElement(p); p->mActivateTS = TimeStamp::Now(); return p.forget(); } /*static*/ already_AddRefed ContentParent::GetNewOrUsedJSPluginProcess(uint32_t aPluginID, const hal::ProcessPriority& aPriority) { RefPtr p; if (sJSPluginContentParents) { p = sJSPluginContentParents->Get(aPluginID); } else { sJSPluginContentParents = new nsDataHashtable(); } if (p) { return p.forget(); } p = new ContentParent(aPluginID); if (!p->LaunchSubprocess(aPriority)) { return nullptr; } sJSPluginContentParents->Put(aPluginID, p); return p.forget(); } /*static*/ ProcessPriority ContentParent::GetInitialProcessPriority(Element* aFrameElement) { // Frames with mozapptype == critical which are expecting a system message // get FOREGROUND_HIGH priority. if (!aFrameElement) { return PROCESS_PRIORITY_FOREGROUND; } nsCOMPtr browserFrame = do_QueryInterface(aFrameElement); if (!browserFrame) { return PROCESS_PRIORITY_FOREGROUND; } return PROCESS_PRIORITY_FOREGROUND; } #if defined(XP_WIN) extern const wchar_t* kPluginWidgetContentParentProperty; /*static*/ void ContentParent::SendAsyncUpdate(nsIWidget* aWidget) { if (!aWidget || aWidget->Destroyed()) { return; } // Fire off an async request to the plugin to paint its window HWND hwnd = (HWND)aWidget->GetNativeData(NS_NATIVE_WINDOW); NS_ASSERTION(hwnd, "Expected valid hwnd value."); ContentParent* cp = reinterpret_cast( ::GetPropW(hwnd, kPluginWidgetContentParentProperty)); if (cp && !cp->IsDestroyed()) { Unused << cp->SendUpdateWindow((uintptr_t)hwnd); } } #endif // defined(XP_WIN) mozilla::ipc::IPCResult ContentParent::RecvCreateChildProcess(const IPCTabContext& aContext, const hal::ProcessPriority& aPriority, const TabId& aOpenerTabId, const TabId& aTabId, ContentParentId* aCpId, bool* aIsForBrowser) { #if 0 if (!CanOpenBrowser(aContext)) { return false; } #endif RefPtr cp; MaybeInvalidTabContext tc(aContext); if (!tc.IsValid()) { NS_ERROR(nsPrintfCString("Received an invalid TabContext from " "the child process. (%s)", tc.GetInvalidReason()).get()); return IPC_FAIL_NO_REASON(this); } if (tc.GetTabContext().IsJSPlugin()) { cp = GetNewOrUsedJSPluginProcess(tc.GetTabContext().JSPluginId(), aPriority); } else { cp = GetNewOrUsedBrowserProcess(NS_LITERAL_STRING(DEFAULT_REMOTE_TYPE), aPriority, this); } if (!cp) { *aCpId = 0; *aIsForBrowser = false; return IPC_OK(); } *aCpId = cp->ChildID(); *aIsForBrowser = cp->IsForBrowser(); ContentProcessManager *cpm = ContentProcessManager::GetSingleton(); if (cp->IsForJSPlugin()) { // We group all the iframes for a specific JS plugin into one process, regardless of // origin. As a consequence that process can't be a child of the content process that // contains the document with the element loading the plugin. All content processes // need to be able to communicate with the process for the JS plugin. cpm->RegisterRemoteFrame(aTabId, ChildID(), aOpenerTabId, aContext, cp->ChildID()); return IPC_OK(); } // cp was already added to the ContentProcessManager, this just sets the parent ID. cpm->AddContentProcess(cp, this->ChildID()); if (cpm->AddGrandchildProcess(this->ChildID(), cp->ChildID()) && cpm->RegisterRemoteFrame(aTabId, ChildID(), aOpenerTabId, aContext, cp->ChildID())) { return IPC_OK(); } return IPC_FAIL_NO_REASON(this); } mozilla::ipc::IPCResult ContentParent::RecvBridgeToChildProcess(const ContentParentId& aCpId, Endpoint* aEndpoint) { ContentProcessManager *cpm = ContentProcessManager::GetSingleton(); ContentParent* cp = cpm->GetContentProcessById(aCpId); if (cp && cp->CanCommunicateWith(ChildID())) { Endpoint parent; Endpoint child; if (NS_FAILED(PContentBridge::CreateEndpoints(OtherPid(), cp->OtherPid(), &parent, &child))) { return IPC_FAIL(this, "CreateEndpoints failed"); } *aEndpoint = Move(parent); if (!cp->SendInitContentBridgeChild(Move(child))) { return IPC_FAIL(this, "SendInitContentBridgeChild failed"); } return IPC_OK(); } // You can't bridge to a process you didn't open! KillHard("BridgeToChildProcess"); return IPC_FAIL_NO_REASON(this); } static nsIDocShell* GetOpenerDocShellHelper(Element* aFrameElement) { // Propagate the private-browsing status of the element's parent // docshell to the remote docshell, via the chrome flags. nsCOMPtr frameElement = do_QueryInterface(aFrameElement); MOZ_ASSERT(frameElement); nsPIDOMWindowOuter* win = frameElement->OwnerDoc()->GetWindow(); if (!win) { NS_WARNING("Remote frame has no window"); return nullptr; } nsIDocShell* docShell = win->GetDocShell(); if (!docShell) { NS_WARNING("Remote frame has no docshell"); return nullptr; } return docShell; } mozilla::ipc::IPCResult ContentParent::RecvCreateGMPService() { Endpoint parent; Endpoint child; nsresult rv; rv = PGMPService::CreateEndpoints(base::GetCurrentProcId(), OtherPid(), &parent, &child); if (NS_FAILED(rv)) { MOZ_ASSERT(false, "CreateEndpoints failed"); return IPC_FAIL_NO_REASON(this); } if (!GMPServiceParent::Create(Move(parent))) { MOZ_ASSERT(false, "GMPServiceParent::Create failed"); return IPC_FAIL_NO_REASON(this); } if (!SendInitGMPService(Move(child))) { MOZ_ASSERT(false, "SendInitGMPService failed"); return IPC_FAIL_NO_REASON(this); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvLoadPlugin(const uint32_t& aPluginId, nsresult* aRv, uint32_t* aRunID, Endpoint* aEndpoint) { *aRv = NS_OK; if (!mozilla::plugins::SetupBridge(aPluginId, this, aRv, aRunID, aEndpoint)) { return IPC_FAIL_NO_REASON(this); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvUngrabPointer(const uint32_t& aTime) { #if !defined(MOZ_WIDGET_GTK) MOZ_CRASH("This message only makes sense on GTK platforms"); #else gdk_pointer_ungrab(aTime); return IPC_OK(); #endif } mozilla::ipc::IPCResult ContentParent::RecvRemovePermission(const IPC::Principal& aPrincipal, const nsCString& aPermissionType, nsresult* aRv) { *aRv = Permissions::RemovePermission(aPrincipal, aPermissionType.get()); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvConnectPluginBridge(const uint32_t& aPluginId, nsresult* aRv, Endpoint* aEndpoint) { *aRv = NS_OK; // We don't need to get the run ID for the plugin, since we already got it // in the first call to SetupBridge in RecvLoadPlugin, so we pass in a dummy // pointer and just throw it away. uint32_t dummy = 0; if (!mozilla::plugins::SetupBridge(aPluginId, this, aRv, &dummy, aEndpoint)) { return IPC_FAIL(this, "SetupBridge failed"); } return IPC_OK(); } /*static*/ TabParent* ContentParent::CreateBrowser(const TabContext& aContext, Element* aFrameElement, ContentParent* aOpenerContentParent, TabParent* aSameTabGroupAs, uint64_t aNextTabParentId) { AUTO_PROFILER_LABEL("ContentParent::CreateBrowser", OTHER); if (!sCanLaunchSubprocesses) { return nullptr; } nsAutoString remoteType; if (!aFrameElement->GetAttr(kNameSpaceID_None, nsGkAtoms::RemoteType, remoteType)) { remoteType.AssignLiteral(DEFAULT_REMOTE_TYPE); } if (aNextTabParentId) { if (TabParent* parent = sNextTabParents.GetAndRemove(aNextTabParentId).valueOr(nullptr)) { MOZ_ASSERT(!parent->GetOwnerElement(), "Shouldn't have an owner elemnt before"); parent->SetOwnerElement(aFrameElement); return parent; } } ProcessPriority initialPriority = GetInitialProcessPriority(aFrameElement); bool isInContentProcess = !XRE_IsParentProcess(); TabId tabId(nsContentUtils::GenerateTabId()); nsIDocShell* docShell = GetOpenerDocShellHelper(aFrameElement); TabId openerTabId; if (docShell) { openerTabId = TabParent::GetTabIdFrom(docShell); } bool isPreloadBrowser = false; nsAutoString isPreloadBrowserStr; if (aFrameElement->GetAttr(kNameSpaceID_None, nsGkAtoms::preloadedState, isPreloadBrowserStr)) { isPreloadBrowser = isPreloadBrowserStr.EqualsLiteral("preloaded"); } RefPtr constructorSender; if (isInContentProcess) { MOZ_ASSERT(aContext.IsMozBrowserElement() || aContext.IsJSPlugin()); constructorSender = CreateContentBridgeParent(aContext, initialPriority, openerTabId, tabId); } else { if (aOpenerContentParent) { constructorSender = aOpenerContentParent; } else { if (aContext.IsJSPlugin()) { constructorSender = GetNewOrUsedJSPluginProcess(aContext.JSPluginId(), initialPriority); } else { constructorSender = GetNewOrUsedBrowserProcess(remoteType, initialPriority, nullptr, isPreloadBrowser); } if (!constructorSender) { return nullptr; } } ContentProcessManager* cpm = ContentProcessManager::GetSingleton(); cpm->RegisterRemoteFrame(tabId, ContentParentId(0), openerTabId, aContext.AsIPCTabContext(), constructorSender->ChildID()); } if (constructorSender) { nsCOMPtr treeOwner; docShell->GetTreeOwner(getter_AddRefs(treeOwner)); if (!treeOwner) { return nullptr; } nsCOMPtr wbc = do_GetInterface(treeOwner); if (!wbc) { return nullptr; } uint32_t chromeFlags = 0; wbc->GetChromeFlags(&chromeFlags); nsCOMPtr loadContext = do_QueryInterface(docShell); if (loadContext && loadContext->UsePrivateBrowsing()) { chromeFlags |= nsIWebBrowserChrome::CHROME_PRIVATE_WINDOW; } if (docShell->GetAffectPrivateSessionLifetime()) { chromeFlags |= nsIWebBrowserChrome::CHROME_PRIVATE_LIFETIME; } if (tabId == 0) { return nullptr; } RefPtr tp(new TabParent(constructorSender, tabId, aContext, chromeFlags)); tp->SetInitedByParent(); PBrowserParent* browser = constructorSender->SendPBrowserConstructor( // DeallocPBrowserParent() releases this ref. tp.forget().take(), tabId, aSameTabGroupAs ? aSameTabGroupAs->GetTabId() : TabId(0), aContext.AsIPCTabContext(), chromeFlags, constructorSender->ChildID(), constructorSender->IsForBrowser()); if (remoteType.EqualsLiteral(LARGE_ALLOCATION_REMOTE_TYPE)) { // Tell the TabChild object that it was created due to a Large-Allocation // request. Unused << browser->SendAwaitLargeAlloc(); } if (browser) { RefPtr constructedTabParent = TabParent::GetFrom(browser); constructedTabParent->SetOwnerElement(aFrameElement); return constructedTabParent; } } return nullptr; } /*static*/ ContentBridgeParent* ContentParent::CreateContentBridgeParent(const TabContext& aContext, const hal::ProcessPriority& aPriority, const TabId& aOpenerTabId, const TabId& aTabId) { MOZ_ASSERT(aTabId); ContentChild* child = ContentChild::GetSingleton(); ContentParentId cpId; bool isForBrowser; if (!child->SendCreateChildProcess(aContext.AsIPCTabContext(), aPriority, aOpenerTabId, aTabId, &cpId, &isForBrowser)) { return nullptr; } if (cpId == 0) { return nullptr; } Endpoint endpoint; if (!child->SendBridgeToChildProcess(cpId, &endpoint)) { return nullptr; } ContentBridgeParent* parent = ContentBridgeParent::Create(Move(endpoint)); parent->SetChildID(cpId); parent->SetIsForBrowser(isForBrowser); parent->SetIsForJSPlugin(aContext.IsJSPlugin()); return parent; } void ContentParent::GetAll(nsTArray& aArray) { aArray.Clear(); for (auto* cp : AllProcesses(eLive)) { aArray.AppendElement(cp); } } void ContentParent::GetAllEvenIfDead(nsTArray& aArray) { aArray.Clear(); for (auto* cp : AllProcesses(eAll)) { aArray.AppendElement(cp); } } const nsAString& ContentParent::GetRemoteType() const { return mRemoteType; } void ContentParent::Init() { nsCOMPtr obs = mozilla::services::GetObserverService(); if (obs) { size_t length = ArrayLength(sObserverTopics); for (size_t i = 0; i < length; ++i) { obs->AddObserver(this, sObserverTopics[i], false); } } // Register ContentParent as an observer for changes to any pref whose prefix // matches the empty string, i.e. all of them. Preferences::AddStrongObserver(this, ""); if (obs) { nsAutoString cpId; cpId.AppendInt(static_cast(this->ChildID())); obs->NotifyObservers(static_cast(this), "ipc:content-created", cpId.get()); } #ifdef ACCESSIBILITY // If accessibility is running in chrome process then start it in content // process. if (nsIPresShell::IsAccessibilityActive()) { #if defined(XP_WIN) // Don't init content a11y if we detect an incompat version of JAWS in use. if (!mozilla::a11y::Compatibility::IsOldJAWS()) { Unused << SendActivateA11y(::GetCurrentThreadId(), a11y::AccessibleWrap::GetContentProcessIdFor(ChildID())); } #else Unused << SendActivateA11y(0, 0); #endif } #endif #ifdef MOZ_GECKO_PROFILER Unused << SendInitProfiler(ProfilerParent::CreateForProcess(OtherPid())); #endif // Ensure that the default set of permissions are avaliable in the content // process before we try to load any URIs in it. EnsurePermissionsByKey(EmptyCString()); RefPtr gmps(GeckoMediaPluginServiceParent::GetSingleton()); gmps->UpdateContentProcessGMPCapabilities(); mScriptableHelper = new ScriptableCPInfo(this); } namespace { class RemoteWindowContext final : public nsIRemoteWindowContext , public nsIInterfaceRequestor { public: explicit RemoteWindowContext(TabParent* aTabParent) : mTabParent(aTabParent) { } NS_DECL_ISUPPORTS NS_DECL_NSIINTERFACEREQUESTOR NS_DECL_NSIREMOTEWINDOWCONTEXT private: ~RemoteWindowContext(); RefPtr mTabParent; }; NS_IMPL_ISUPPORTS(RemoteWindowContext, nsIRemoteWindowContext, nsIInterfaceRequestor) RemoteWindowContext::~RemoteWindowContext() { } NS_IMETHODIMP RemoteWindowContext::GetInterface(const nsIID& aIID, void** aSink) { return QueryInterface(aIID, aSink); } NS_IMETHODIMP RemoteWindowContext::OpenURI(nsIURI* aURI) { mTabParent->LoadURL(aURI); return NS_OK; } } // namespace void ContentParent::ShutDownProcess(ShutDownMethod aMethod) { if (mScriptableHelper) { static_cast(mScriptableHelper.get())->ProcessDied(); mScriptableHelper = nullptr; } // Shutting down by sending a shutdown message works differently than the // other methods. We first call Shutdown() in the child. After the child is // ready, it calls FinishShutdown() on us. Then we close the channel. if (aMethod == SEND_SHUTDOWN_MESSAGE) { if (mIPCOpen && !mShutdownPending) { // Stop sending input events with input priority when shutting down. SetInputPriorityEventEnabled(false); if (SendShutdown()) { mShutdownPending = true; // Start the force-kill timer if we haven't already. StartForceKillTimer(); } } // If call was not successful, the channel must have been broken // somehow, and we will clean up the error in ActorDestroy. return; } using mozilla::dom::quota::QuotaManagerService; if (QuotaManagerService* quotaManagerService = QuotaManagerService::Get()) { quotaManagerService->AbortOperationsForProcess(mChildID); } // If Close() fails with an error, we'll end up back in this function, but // with aMethod = CLOSE_CHANNEL_WITH_ERROR. if (aMethod == CLOSE_CHANNEL && !mCalledClose) { // Close() can only be called once: It kicks off the destruction // sequence. mCalledClose = true; Close(); } const ManagedContainer& ocuParents = ManagedPOfflineCacheUpdateParent(); for (auto iter = ocuParents.ConstIter(); !iter.Done(); iter.Next()) { RefPtr ocuParent = static_cast(iter.Get()->GetKey()); ocuParent->StopSendingMessagesToChild(); } // NB: must MarkAsDead() here so that this isn't accidentally // returned from Get*() while in the midst of shutdown. MarkAsDead(); // A ContentParent object might not get freed until after XPCOM shutdown has // shut down the cycle collector. But by then it's too late to release any // CC'ed objects, so we need to null them out here, while we still can. See // bug 899761. ShutDownMessageManager(); } mozilla::ipc::IPCResult ContentParent::RecvFinishShutdown() { // At this point, we already called ShutDownProcess once with // SEND_SHUTDOWN_MESSAGE. To actually close the channel, we call // ShutDownProcess again with CLOSE_CHANNEL. MOZ_ASSERT(mShutdownPending); ShutDownProcess(CLOSE_CHANNEL); return IPC_OK(); } void ContentParent::ShutDownMessageManager() { if (!mMessageManager) { return; } mMessageManager->ReceiveMessage(mMessageManager, nullptr, CHILD_PROCESS_SHUTDOWN_MESSAGE, false, nullptr, nullptr, nullptr, nullptr, IgnoreErrors()); mMessageManager->Disconnect(); mMessageManager = nullptr; } void ContentParent::RemoveFromList() { if (IsForJSPlugin()) { if (sJSPluginContentParents) { sJSPluginContentParents->Remove(mJSPluginID); if (!sJSPluginContentParents->Count()) { delete sJSPluginContentParents; sJSPluginContentParents = nullptr; } } } else if (sBrowserContentParents) { if (auto entry = sBrowserContentParents->Lookup(mRemoteType)) { nsTArray* contentParents = entry.Data(); contentParents->RemoveElement(this); if (contentParents->IsEmpty()) { entry.Remove(); } } if (sBrowserContentParents->IsEmpty()) { delete sBrowserContentParents; sBrowserContentParents = nullptr; } } if (sPrivateContent) { sPrivateContent->RemoveElement(this); if (!sPrivateContent->Length()) { delete sPrivateContent; sPrivateContent = nullptr; } } } void ContentParent::MarkAsTroubled() { RemoveFromList(); mIsAvailable = false; } void ContentParent::MarkAsDead() { MarkAsTroubled(); mIsAlive = false; } void ContentParent::OnChannelError() { RefPtr content(this); PContentParent::OnChannelError(); } void ContentParent::OnChannelConnected(int32_t pid) { MOZ_ASSERT(NS_IsMainThread()); #ifndef ASYNC_CONTENTPROC_LAUNCH SetOtherProcessId(pid); #endif #if defined(ANDROID) || defined(LINUX) // Check nice preference int32_t nice = Preferences::GetInt("dom.ipc.content.nice", 0); // Environment variable overrides preference char* relativeNicenessStr = getenv("MOZ_CHILD_PROCESS_RELATIVE_NICENESS"); if (relativeNicenessStr) { nice = atoi(relativeNicenessStr); } /* make the GUI thread have higher priority on single-cpu devices */ nsCOMPtr infoService = do_GetService(NS_SYSTEMINFO_CONTRACTID); if (infoService) { int32_t cpus; nsresult rv = infoService->GetPropertyAsInt32(NS_LITERAL_STRING("cpucount"), &cpus); if (NS_FAILED(rv)) { cpus = 1; } if (nice != 0 && cpus == 1) { setpriority(PRIO_PROCESS, pid, getpriority(PRIO_PROCESS, pid) + nice); } } #endif #if defined(MOZ_CODE_COVERAGE) && defined(ASYNC_CONTENTPROC_LAUNCH) Unused << SendShareCodeCoverageMutex( CodeCoverageHandler::Get()->GetMutexHandle(pid)); #endif } void ContentParent::ProcessingError(Result aCode, const char* aReason) { if (MsgDropped == aCode) { return; } // Other errors are big deals. KillHard(aReason); } /* static */ bool ContentParent::AllocateLayerTreeId(TabParent* aTabParent, layers::LayersId* aId) { return AllocateLayerTreeId(aTabParent->Manager()->AsContentParent(), aTabParent, aTabParent->GetTabId(), aId); } /* static */ bool ContentParent::AllocateLayerTreeId(ContentParent* aContent, TabParent* aTopLevel, const TabId& aTabId, layers::LayersId* aId) { GPUProcessManager* gpu = GPUProcessManager::Get(); *aId = gpu->AllocateLayerTreeId(); if (!aContent || !aTopLevel) { return false; } gpu->MapLayerTreeId(*aId, aContent->OtherPid()); return true; } mozilla::ipc::IPCResult ContentParent::RecvAllocateLayerTreeId(const ContentParentId& aCpId, const TabId& aTabId, layers::LayersId* aId) { // Protect against spoofing by a compromised child. aCpId must either // correspond to the process that this ContentParent represents or be a // child of it. ContentProcessManager* cpm = ContentProcessManager::GetSingleton(); RefPtr contentParent = cpm->GetContentProcessById(aCpId); if (ChildID() != aCpId && !contentParent->CanCommunicateWith(ChildID())) { return IPC_FAIL_NO_REASON(this); } // GetTopLevelTabParentByProcessAndTabId will make sure that aTabId // lives in the process for aCpId. RefPtr browserParent = cpm->GetTopLevelTabParentByProcessAndTabId(aCpId, aTabId); MOZ_ASSERT(contentParent && browserParent); if (!AllocateLayerTreeId(contentParent, browserParent, aTabId, aId)) { return IPC_FAIL_NO_REASON(this); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvDeallocateLayerTreeId(const ContentParentId& aCpId, const layers::LayersId& aId) { GPUProcessManager* gpu = GPUProcessManager::Get(); ContentProcessManager* cpm = ContentProcessManager::GetSingleton(); RefPtr contentParent = cpm->GetContentProcessById(aCpId); if (!contentParent->CanCommunicateWith(ChildID())) { return IPC_FAIL(this, "Spoofed DeallocateLayerTreeId call"); } if (!gpu->IsLayerTreeIdMapped(aId, contentParent->OtherPid())) { // You can't deallocate layer tree ids that you didn't allocate KillHard("DeallocateLayerTreeId"); } gpu->UnmapLayerTreeId(aId, contentParent->OtherPid()); return IPC_OK(); } namespace { void DelayedDeleteSubprocess(GeckoChildProcessHost* aSubprocess) { RefPtr> task = new DeleteTask(aSubprocess); XRE_GetIOMessageLoop()->PostTask(task.forget()); } // This runnable only exists to delegate ownership of the // ContentParent to this runnable, until it's deleted by the event // system. struct DelayedDeleteContentParentTask : public Runnable { explicit DelayedDeleteContentParentTask(ContentParent* aObj) : Runnable("dom::DelayedDeleteContentParentTask") , mObj(aObj) { } // No-op NS_IMETHOD Run() override { return NS_OK; } RefPtr mObj; }; } // namespace void ContentParent::ActorDestroy(ActorDestroyReason why) { if (mForceKillTimer) { mForceKillTimer->Cancel(); mForceKillTimer = nullptr; } // Signal shutdown completion regardless of error state, so we can // finish waiting in the xpcom-shutdown/profile-before-change observer. mIPCOpen = false; if (mHangMonitorActor) { ProcessHangMonitor::RemoveProcess(mHangMonitorActor); mHangMonitorActor = nullptr; } RefPtr fss = FileSystemSecurity::Get(); if (fss) { fss->Forget(ChildID()); } if (why == NormalShutdown && !mCalledClose) { // If we shut down normally but haven't called Close, assume somebody // else called Close on us. In that case, we still need to call // ShutDownProcess below to perform other necessary clean up. mCalledClose = true; } // Make sure we always clean up. ShutDownProcess(why == NormalShutdown ? CLOSE_CHANNEL : CLOSE_CHANNEL_WITH_ERROR); RefPtr kungFuDeathGrip(this); nsCOMPtr obs = mozilla::services::GetObserverService(); if (obs) { size_t length = ArrayLength(sObserverTopics); for (size_t i = 0; i < length; ++i) { obs->RemoveObserver(static_cast(this), sObserverTopics[i]); } } // remove the global remote preferences observers Preferences::RemoveObserver(this, ""); gfxVars::RemoveReceiver(this); if (GPUProcessManager* gpu = GPUProcessManager::Get()) { // Note: the manager could have shutdown already. gpu->RemoveListener(this); } RecvRemoveGeolocationListener(); mConsoleService = nullptr; if (obs) { RefPtr props = new nsHashPropertyBag(); props->SetPropertyAsUint64(NS_LITERAL_STRING("childID"), mChildID); if (AbnormalShutdown == why) { Telemetry::Accumulate(Telemetry::SUBPROCESS_ABNORMAL_ABORT, NS_LITERAL_CSTRING("content"), 1); props->SetPropertyAsBool(NS_LITERAL_STRING("abnormal"), true); // There's a window in which child processes can crash // after IPC is established, but before a crash reporter // is created. if (mCrashReporter) { // if mCreatedPairedMinidumps is true, we've already generated // parent/child dumps for desktop crashes. if (!mCreatedPairedMinidumps) { mCrashReporter->GenerateCrashReport(OtherPid()); } nsAutoString dumpID; if (mCrashReporter->HasMinidump()) { dumpID = mCrashReporter->MinidumpID(); } props->SetPropertyAsAString(NS_LITERAL_STRING("dumpID"), dumpID); } } nsAutoString cpId; cpId.AppendInt(static_cast(this->ChildID())); obs->NotifyObservers((nsIPropertyBag2*) props, "ipc:content-shutdown", cpId.get()); } // Remove any and all idle listeners. nsCOMPtr idleService = do_GetService("@mozilla.org/widget/idleservice;1"); MOZ_ASSERT(idleService); RefPtr listener; for (int32_t i = mIdleListeners.Length() - 1; i >= 0; --i) { listener = static_cast(mIdleListeners[i].get()); idleService->RemoveIdleObserver(listener, listener->mTime); } mIdleListeners.Clear(); MessageLoop::current()-> PostTask(NewRunnableFunction("DelayedDeleteSubprocessRunnable", DelayedDeleteSubprocess, mSubprocess)); mSubprocess = nullptr; // IPDL rules require actors to live on past ActorDestroy, but it // may be that the kungFuDeathGrip above is the last reference to // |this|. If so, when we go out of scope here, we're deleted and // all hell breaks loose. // // This runnable ensures that a reference to |this| lives on at // least until after the current task finishes running. NS_DispatchToCurrentThread(new DelayedDeleteContentParentTask(this)); ContentProcessManager* cpm = ContentProcessManager::GetSingleton(); nsTArray childIDArray = cpm->GetAllChildProcessById(this->ChildID()); // Destroy any processes created by this ContentParent for(uint32_t i = 0; i < childIDArray.Length(); i++) { ContentParent* cp = cpm->GetContentProcessById(childIDArray[i]); MessageLoop::current()->PostTask( NewRunnableMethod("dom::ContentParent::ShutDownProcess", cp, &ContentParent::ShutDownProcess, SEND_SHUTDOWN_MESSAGE)); } cpm->RemoveContentProcess(this->ChildID()); if (mDriverCrashGuard) { mDriverCrashGuard->NotifyCrashed(); } // Unregister all the BlobURLs registered by the ContentChild. for (uint32_t i = 0; i < mBlobURLs.Length(); ++i) { nsHostObjectProtocolHandler::RemoveDataEntry(mBlobURLs[i]); } mBlobURLs.Clear(); #if defined(XP_WIN32) && defined(ACCESSIBILITY) a11y::AccessibleWrap::ReleaseContentProcessIdFor(ChildID()); #endif } bool ContentParent::TryToRecycle() { // This life time check should be replaced by a memory health check (memory usage + fragmentation). const double kMaxLifeSpan = 5; if (mShutdownPending || mCalledKillHard || !IsAvailable() || !mRemoteType.EqualsLiteral(DEFAULT_REMOTE_TYPE) || (TimeStamp::Now() - mActivateTS).ToSeconds() > kMaxLifeSpan || !PreallocatedProcessManager::Provide(this)) { return false; } // The PreallocatedProcessManager took over the ownership let's not keep a reference to it, // until we don't take it back. RemoveFromList(); return true; } bool ContentParent::ShouldKeepProcessAlive() const { if (IsForJSPlugin()) { return true; } if (!sBrowserContentParents) { return false; } // If we have already been marked as troubled/dead, don't prevent shutdown. if (!IsAvailable()) { return false; } auto contentParents = sBrowserContentParents->Get(mRemoteType); if (!contentParents) { return false; } // We might want to keep alive some content processes alive during test runs, // for performance reasons. This should never be used in production. // We don't want to alter behavior if the pref is not set, so default to 0. int32_t processesToKeepAlive = 0; nsAutoCString keepAlivePref("dom.ipc.keepProcessesAlive."); keepAlivePref.Append(NS_ConvertUTF16toUTF8(mRemoteType)); if (NS_FAILED(Preferences::GetInt(keepAlivePref.get(), &processesToKeepAlive))) { return false; } int32_t numberOfAliveProcesses = contentParents->Length(); return numberOfAliveProcesses <= processesToKeepAlive; } void ContentParent::NotifyTabDestroying(const TabId& aTabId, const ContentParentId& aCpId) { if (XRE_IsParentProcess()) { // There can be more than one PBrowser for a given app process // because of popup windows. PBrowsers can also destroy // concurrently. When all the PBrowsers are destroying, kick off // another task to ensure the child process *really* shuts down, // even if the PBrowsers themselves never finish destroying. ContentProcessManager* cpm = ContentProcessManager::GetSingleton(); ContentParent* cp = cpm->GetContentProcessById(aCpId); if (!cp) { return; } ++cp->mNumDestroyingTabs; nsTArray tabIds = cpm->GetTabParentsByProcessId(aCpId); if (static_cast(cp->mNumDestroyingTabs) != tabIds.Length()) { return; } if (cp->ShouldKeepProcessAlive()) { return; } if (cp->TryToRecycle()) { return; } // We're dying now, so prevent this content process from being // recycled during its shutdown procedure. cp->MarkAsDead(); cp->StartForceKillTimer(); } else { ContentChild::GetSingleton()->SendNotifyTabDestroying(aTabId, aCpId); } } void ContentParent::StartForceKillTimer() { if (mForceKillTimer || !mIPCOpen) { return; } int32_t timeoutSecs = Preferences::GetInt("dom.ipc.tabs.shutdownTimeoutSecs", 5); if (timeoutSecs > 0) { NS_NewTimerWithFuncCallback(getter_AddRefs(mForceKillTimer), ContentParent::ForceKillTimerCallback, this, timeoutSecs * 1000, nsITimer::TYPE_ONE_SHOT, "dom::ContentParent::StartForceKillTimer"); MOZ_ASSERT(mForceKillTimer); } } void ContentParent::NotifyTabDestroyed(const TabId& aTabId, bool aNotifiedDestroying) { if (aNotifiedDestroying) { --mNumDestroyingTabs; } nsTArray parentArray = nsContentPermissionUtils::GetContentPermissionRequestParentById(aTabId); // Need to close undeleted ContentPermissionRequestParents before tab is closed. for (auto& permissionRequestParent : parentArray) { Unused << PContentPermissionRequestParent::Send__delete__(permissionRequestParent); } // There can be more than one PBrowser for a given app process // because of popup windows. When the last one closes, shut // us down. ContentProcessManager* cpm = ContentProcessManager::GetSingleton(); nsTArray tabIds = cpm->GetTabParentsByProcessId(this->ChildID()); if (tabIds.Length() == 1 && !ShouldKeepProcessAlive() && !TryToRecycle()) { // In the case of normal shutdown, send a shutdown message to child to // allow it to perform shutdown tasks. MessageLoop::current()->PostTask( NewRunnableMethod("dom::ContentParent::ShutDownProcess", this, &ContentParent::ShutDownProcess, SEND_SHUTDOWN_MESSAGE)); } } jsipc::CPOWManager* ContentParent::GetCPOWManager() { if (PJavaScriptParent* p = LoneManagedOrNullAsserts(ManagedPJavaScriptParent())) { return CPOWManagerFor(p); } return nullptr; } TestShellParent* ContentParent::CreateTestShell() { return static_cast(SendPTestShellConstructor()); } bool ContentParent::DestroyTestShell(TestShellParent* aTestShell) { return PTestShellParent::Send__delete__(aTestShell); } TestShellParent* ContentParent::GetTestShellSingleton() { PTestShellParent* p = LoneManagedOrNullAsserts(ManagedPTestShellParent()); return static_cast(p); } bool ContentParent::LaunchSubprocess(ProcessPriority aInitialPriority /* = PROCESS_PRIORITY_FOREGROUND */) { AUTO_PROFILER_LABEL("ContentParent::LaunchSubprocess", OTHER); if (!ContentProcessManager::GetSingleton()) { // Shutdown has begun, we shouldn't spawn any more child processes. return false; } std::vector extraArgs; extraArgs.push_back("-childID"); char idStr[21]; SprintfLiteral(idStr, "%" PRId64, static_cast(mChildID)); extraArgs.push_back(idStr); extraArgs.push_back(IsForBrowser() ? "-isForBrowser" : "-notForBrowser"); // Prefs information is passed via anonymous shared memory to avoid bloating // the command line. // Serialize the early prefs. nsAutoCStringN<1024> prefs; Preferences::SerializePreferences(prefs); // Set up the shared memory. base::SharedMemory shm; if (!shm.Create(prefs.Length())) { NS_ERROR("failed to create shared memory in the parent"); MarkAsDead(); return false; } if (!shm.Map(prefs.Length())) { NS_ERROR("failed to map shared memory in the parent"); MarkAsDead(); return false; } // Copy the serialized prefs into the shared memory. memcpy(static_cast(shm.memory()), prefs.get(), prefs.Length()); #if defined(XP_WIN) // Record the handle as to-be-shared, and pass it via a command flag. This // works because Windows handles are system-wide. HANDLE prefsHandle = shm.handle(); mSubprocess->AddHandleToShare(prefsHandle); extraArgs.push_back("-prefsHandle"); extraArgs.push_back( nsPrintfCString("%zu", reinterpret_cast(prefsHandle)).get()); #else // In contrast, Unix fds are per-process. So remap the fd to a fixed one that // will be used in the child. // XXX: bug 1440207 is about improving how fixed fds are used. // // Note: on Android, AddFdToRemap() sets up the fd to be passed via a Parcel, // and the fixed fd isn't used. However, we still need to mark it for // remapping so it doesn't get closed in the child. mSubprocess->AddFdToRemap(shm.handle().fd, kPrefsFileDescriptor); #endif // Pass the length via a command flag. extraArgs.push_back("-prefsLen"); extraArgs.push_back(nsPrintfCString("%zu", uintptr_t(prefs.Length())).get()); // Scheduler prefs need to be handled differently because the scheduler needs // to start up in the content process before the normal preferences service. nsCString schedulerPrefs = Scheduler::GetPrefs(); extraArgs.push_back("-schedulerPrefs"); extraArgs.push_back(schedulerPrefs.get()); if (gSafeMode) { extraArgs.push_back("-safeMode"); } nsCString parentBuildID(mozilla::PlatformBuildID()); extraArgs.push_back("-parentBuildID"); extraArgs.push_back(parentBuildID.get()); SetOtherProcessId(kInvalidProcessId, ProcessIdState::ePending); #ifdef ASYNC_CONTENTPROC_LAUNCH if (!mSubprocess->Launch(extraArgs)) { #else if (!mSubprocess->LaunchAndWaitForProcessHandle(extraArgs)) { #endif NS_ERROR("failed to launch child in the parent"); MarkAsDead(); return false; } #ifdef ASYNC_CONTENTPROC_LAUNCH OpenWithAsyncPid(mSubprocess->GetChannel()); #else base::ProcessId procId = base::GetProcId(mSubprocess->GetChildProcessHandle()); Open(mSubprocess->GetChannel(), procId); #ifdef MOZ_CODE_COVERAGE Unused << SendShareCodeCoverageMutex( CodeCoverageHandler::Get()->GetMutexHandle(procId)); #endif #endif // ASYNC_CONTENTPROC_LAUNCH InitInternal(aInitialPriority); ContentProcessManager::GetSingleton()->AddContentProcess(this); mHangMonitorActor = ProcessHangMonitor::AddProcess(this); // Set a reply timeout for CPOWs. SetReplyTimeoutMs(Preferences::GetInt("dom.ipc.cpow.timeout", 0)); // TODO: In ASYNC_CONTENTPROC_LAUNCH, if OtherPid() is not called between // mSubprocess->Launch() and this, then we're not really measuring how long it // took to spawn the process. Telemetry::Accumulate(Telemetry::CONTENT_PROCESS_LAUNCH_TIME_MS, static_cast((TimeStamp::Now() - mLaunchTS) .ToMilliseconds())); nsCOMPtr obs = mozilla::services::GetObserverService(); if (obs) { nsAutoString cpId; cpId.AppendInt(static_cast(this->ChildID())); obs->NotifyObservers(static_cast(this), "ipc:content-initializing", cpId.get()); } Init(); return true; } ContentParent::ContentParent(ContentParent* aOpener, const nsAString& aRemoteType, int32_t aJSPluginID) : nsIContentParent() , mSubprocess(nullptr) , mLaunchTS(TimeStamp::Now()) , mActivateTS(TimeStamp::Now()) , mOpener(aOpener) , mRemoteType(aRemoteType) , mChildID(gContentChildID++) , mGeolocationWatchID(-1) , mJSPluginID(aJSPluginID) , mNumDestroyingTabs(0) , mIsAvailable(true) , mIsAlive(true) , mIsForBrowser(!mRemoteType.IsEmpty()) , mCalledClose(false) , mCalledKillHard(false) , mCreatedPairedMinidumps(false) , mShutdownPending(false) , mIPCOpen(true) , mIsRemoteInputEventQueueEnabled(false) , mIsInputPriorityEventEnabled(false) , mHangMonitorActor(nullptr) { // Insert ourselves into the global linked list of ContentParent objects. if (!sContentParents) { sContentParents = new LinkedList(); } sContentParents->insertBack(this); // From this point on, NS_WARNING, NS_ASSERTION, etc. should print out the // PID along with the warning. nsDebugImpl::SetMultiprocessMode("Parent"); #if defined(XP_WIN) if (XRE_IsParentProcess()) { audio::AudioNotificationSender::Init(); } // Request Windows message deferral behavior on our side of the PContent // channel. Generally only applies to the situation where we get caught in // a deadlock with the plugin process when sending CPOWs. GetIPCChannel()->SetChannelFlags(MessageChannel::REQUIRE_DEFERRED_MESSAGE_PROTECTION); #endif NS_ASSERTION(NS_IsMainThread(), "Wrong thread!"); bool isFile = mRemoteType.EqualsLiteral(FILE_REMOTE_TYPE); mSubprocess = new ContentProcessHost(this, isFile); } ContentParent::~ContentParent() { if (mForceKillTimer) { mForceKillTimer->Cancel(); } NS_ASSERTION(NS_IsMainThread(), "Wrong thread!"); // We should be removed from all these lists in ActorDestroy. MOZ_ASSERT(!sPrivateContent || !sPrivateContent->Contains(this)); if (IsForJSPlugin()) { MOZ_ASSERT(!sJSPluginContentParents || !sJSPluginContentParents->Get(mJSPluginID)); } else { MOZ_ASSERT(!sBrowserContentParents || !sBrowserContentParents->Contains(mRemoteType) || !sBrowserContentParents->Get(mRemoteType)->Contains(this)); } } void ContentParent::InitInternal(ProcessPriority aInitialPriority) { Telemetry::Accumulate(Telemetry::CONTENT_PROCESS_LAUNCH_TIME_MS, static_cast((TimeStamp::Now() - mLaunchTS) .ToMilliseconds())); XPCOMInitData xpcomInit; nsCOMPtr io(do_GetIOService()); MOZ_ASSERT(io, "No IO service?"); DebugOnly rv = io->GetOffline(&xpcomInit.isOffline()); MOZ_ASSERT(NS_SUCCEEDED(rv), "Failed getting offline?"); rv = io->GetConnectivity(&xpcomInit.isConnected()); MOZ_ASSERT(NS_SUCCEEDED(rv), "Failed getting connectivity?"); xpcomInit.captivePortalState() = nsICaptivePortalService::UNKNOWN; nsCOMPtr cps = do_GetService(NS_CAPTIVEPORTAL_CONTRACTID); if (cps) { cps->GetState(&xpcomInit.captivePortalState()); } nsIBidiKeyboard* bidi = nsContentUtils::GetBidiKeyboard(); xpcomInit.isLangRTL() = false; xpcomInit.haveBidiKeyboards() = false; if (bidi) { bidi->IsLangRTL(&xpcomInit.isLangRTL()); bidi->GetHaveBidiKeyboards(&xpcomInit.haveBidiKeyboards()); } nsCOMPtr spellChecker(do_GetService(NS_SPELLCHECKER_CONTRACTID)); MOZ_ASSERT(spellChecker, "No spell checker?"); spellChecker->GetDictionaryList(&xpcomInit.dictionaries()); LocaleService::GetInstance()->GetAppLocalesAsLangTags(xpcomInit.appLocales()); LocaleService::GetInstance()->GetRequestedLocales(xpcomInit.requestedLocales()); nsCOMPtr clipboard(do_GetService("@mozilla.org/widget/clipboard;1")); MOZ_ASSERT(clipboard, "No clipboard?"); rv = clipboard->SupportsSelectionClipboard(&xpcomInit.clipboardCaps().supportsSelectionClipboard()); MOZ_ASSERT(NS_SUCCEEDED(rv)); rv = clipboard->SupportsFindClipboard(&xpcomInit.clipboardCaps().supportsFindClipboard()); MOZ_ASSERT(NS_SUCCEEDED(rv)); // Let's copy the domain policy from the parent to the child (if it's active). StructuredCloneData initialData; nsIScriptSecurityManager* ssm = nsContentUtils::GetSecurityManager(); if (ssm) { ssm->CloneDomainPolicy(&xpcomInit.domainPolicy()); if (ChromeMessageBroadcaster* mm = nsFrameMessageManager::sParentProcessManager) { AutoJSAPI jsapi; if (NS_WARN_IF(!jsapi.Init(xpc::PrivilegedJunkScope()))) { MOZ_CRASH(); } JS::RootedValue init(jsapi.cx()); // We'll crash on failure, so use a IgnoredErrorResult (which also auto-suppresses // exceptions). IgnoredErrorResult rv; mm->GetInitialProcessData(jsapi.cx(), &init, rv); if (NS_WARN_IF(rv.Failed())) { MOZ_CRASH(); } initialData.Write(jsapi.cx(), init, rv); if (NS_WARN_IF(rv.Failed())) { MOZ_CRASH(); } } } // This is only implemented (returns a non-empty list) by MacOSX and Linux // at present. nsTArray fontList; gfxPlatform::GetPlatform()->ReadSystemFontList(&fontList); nsTArray lnfCache = LookAndFeel::GetIntCache(); // Content processes have no permission to access profile directory, so we // send the file URL instead. StyleSheet* ucs = nsLayoutStylesheetCache::Singleton()->UserContentSheet(); if (ucs) { SerializeURI(ucs->GetSheetURI(), xpcomInit.userContentSheetURL()); } else { SerializeURI(nullptr, xpcomInit.userContentSheetURL()); } // 1. Build ContentDeviceData first, as it may affect some gfxVars. gfxPlatform::GetPlatform()->BuildContentDeviceData(&xpcomInit.contentDeviceData()); // 2. Gather non-default gfxVars. xpcomInit.gfxNonDefaultVarUpdates() = gfxVars::FetchNonDefaultVars(); // 3. Start listening for gfxVars updates, to notify content process later on. gfxVars::AddReceiver(this); nsCOMPtr gfxInfo = services::GetGfxInfo(); if (gfxInfo) { for (int32_t i = 1; i <= nsIGfxInfo::FEATURE_MAX_VALUE; ++i) { int32_t status = 0; nsAutoCString failureId; gfxInfo->GetFeatureStatus(i, failureId, &status); dom::GfxInfoFeatureStatus gfxFeatureStatus; gfxFeatureStatus.feature() = i; gfxFeatureStatus.status() = status; gfxFeatureStatus.failureId() = failureId; xpcomInit.gfxFeatureStatus().AppendElement(gfxFeatureStatus); } } DataStorage::GetAllChildProcessData(xpcomInit.dataStorage()); // Send the dynamic scalar definitions to the new process. TelemetryIPC::GetDynamicScalarDefinitions(xpcomInit.dynamicScalarDefs()); // Must send screen info before send initialData ScreenManager& screenManager = ScreenManager::GetSingleton(); screenManager.CopyScreensToRemote(this); Unused << SendSetXPCOMProcessAttributes(xpcomInit, initialData, lnfCache, fontList); nsCOMPtr registrySvc = nsChromeRegistry::GetService(); nsChromeRegistryChrome* chromeRegistry = static_cast(registrySvc.get()); chromeRegistry->SendRegisteredChrome(this); if (gAppData) { nsCString version(gAppData->version); nsCString buildID(gAppData->buildID); nsCString name(gAppData->name); nsCString UAName(gAppData->UAName); nsCString ID(gAppData->ID); nsCString vendor(gAppData->vendor); // Sending all information to content process. Unused << SendAppInfo(version, buildID, name, UAName, ID, vendor); } // Send the child its remote type. On Mac, this needs to be sent prior // to the message we send to enable the Sandbox (SendStartProcessSandbox) // because different remote types require different sandbox privileges. Unused << SendRemoteType(mRemoteType); ScriptPreloader::InitContentChild(*this); // Initialize the message manager (and load delayed scripts) now that we // have established communications with the child. mMessageManager->InitWithCallback(this); // Set the subprocess's priority. We do this early on because we're likely // /lowering/ the process's CPU and memory priority, which it has inherited // from this process. // // This call can cause us to send IPC messages to the child process, so it // must come after the Open() call above. ProcessPriorityManager::SetProcessPriority(this, aInitialPriority); // NB: internally, this will send an IPC message to the child // process to get it to create the CompositorBridgeChild. This // message goes through the regular IPC queue for this // channel, so delivery will happen-before any other messages // we send. The CompositorBridgeChild must be created before any // PBrowsers are created, because they rely on the Compositor // already being around. (Creation is async, so can't happen // on demand.) GPUProcessManager* gpm = GPUProcessManager::Get(); Endpoint compositor; Endpoint imageBridge; Endpoint vrBridge; Endpoint videoManager; AutoTArray namespaces; DebugOnly opened = gpm->CreateContentBridges(OtherPid(), &compositor, &imageBridge, &vrBridge, &videoManager, &namespaces); MOZ_ASSERT(opened); Unused << SendInitRendering(Move(compositor), Move(imageBridge), Move(vrBridge), Move(videoManager), namespaces); gpm->AddListener(this); nsStyleSheetService *sheetService = nsStyleSheetService::GetInstance(); if (sheetService) { // This looks like a lot of work, but in a normal browser session we just // send two loads. // // The URIs of the Gecko and Servo sheets should be the same, so it // shouldn't matter which we look at. for (StyleSheet* sheet : *sheetService->AgentStyleSheets()) { URIParams uri; SerializeURI(sheet->GetSheetURI(), uri); Unused << SendLoadAndRegisterSheet(uri, nsIStyleSheetService::AGENT_SHEET); } for (StyleSheet* sheet : *sheetService->UserStyleSheets()) { URIParams uri; SerializeURI(sheet->GetSheetURI(), uri); Unused << SendLoadAndRegisterSheet(uri, nsIStyleSheetService::USER_SHEET); } for (StyleSheet* sheet : *sheetService->AuthorStyleSheets()) { URIParams uri; SerializeURI(sheet->GetSheetURI(), uri); Unused << SendLoadAndRegisterSheet(uri, nsIStyleSheetService::AUTHOR_SHEET); } } #if defined(XP_WIN) // Send the info needed to join the browser process's audio session. nsID id; nsString sessionName; nsString iconPath; if (NS_SUCCEEDED(mozilla::widget::GetAudioSessionData(id, sessionName, iconPath))) { Unused << SendSetAudioSessionData(id, sessionName, iconPath); } #endif #ifdef MOZ_CONTENT_SANDBOX bool shouldSandbox = true; MaybeFileDesc brokerFd = void_t(); // XXX: Checking the pref here makes it possible to enable/disable sandboxing // during an active session. Currently the pref is only used for testing // purpose. If the decision is made to permanently rely on the pref, this // should be changed so that it is required to restart firefox for the change // of value to take effect. shouldSandbox = IsContentSandboxEnabled(); #ifdef XP_LINUX if (shouldSandbox) { MOZ_ASSERT(!mSandboxBroker); bool isFileProcess = mRemoteType.EqualsLiteral(FILE_REMOTE_TYPE); UniquePtr policy = sSandboxBrokerPolicyFactory->GetContentPolicy(Pid(), isFileProcess); if (policy) { brokerFd = FileDescriptor(); mSandboxBroker = SandboxBroker::Create(Move(policy), Pid(), brokerFd); if (!mSandboxBroker) { KillHard("SandboxBroker::Create failed"); return; } MOZ_ASSERT(static_cast(brokerFd).IsValid()); } } #endif if (shouldSandbox && !SendSetProcessSandbox(brokerFd)) { KillHard("SandboxInitFailed"); } #endif { RefPtr swr = ServiceWorkerRegistrar::Get(); MOZ_ASSERT(swr); nsTArray registrations; swr->GetRegistrations(registrations); // Send down to the content process the permissions for each of the // registered service worker scopes. for (auto& registration : registrations) { nsCOMPtr principal = PrincipalInfoToPrincipal(registration.principal()); if (principal) { TransmitPermissionsForPrincipal(principal); } } Unused << SendInitServiceWorkers(ServiceWorkerConfiguration(registrations)); } { nsTArray registrations; if (nsHostObjectProtocolHandler::GetAllBlobURLEntries(registrations, this)) { Unused << SendInitBlobURLs(registrations); } } // Start up nsPluginHost and run FindPlugins to cache the plugin list. // If this isn't our first content process, just send over cached list. RefPtr pluginHost = nsPluginHost::GetInst(); pluginHost->SendPluginsToContent(); MaybeEnableRemoteInputEventQueue(); } bool ContentParent::IsAlive() const { return mIsAlive; } int32_t ContentParent::Pid() const { if (!mSubprocess || !mSubprocess->GetChildProcessHandle()) { return -1; } return base::GetProcId(mSubprocess->GetChildProcessHandle()); } mozilla::ipc::IPCResult ContentParent::RecvGetGfxVars(InfallibleTArray* aVars) { // Ensure gfxVars is initialized (for xpcshell tests). gfxVars::Initialize(); *aVars = gfxVars::FetchNonDefaultVars(); // Now that content has initialized gfxVars, we can start listening for // updates. gfxVars::AddReceiver(this); return IPC_OK(); } void ContentParent::OnCompositorUnexpectedShutdown() { GPUProcessManager* gpm = GPUProcessManager::Get(); Endpoint compositor; Endpoint imageBridge; Endpoint vrBridge; Endpoint videoManager; AutoTArray namespaces; DebugOnly opened = gpm->CreateContentBridges( OtherPid(), &compositor, &imageBridge, &vrBridge, &videoManager, &namespaces); MOZ_ASSERT(opened); Unused << SendReinitRendering( Move(compositor), Move(imageBridge), Move(vrBridge), Move(videoManager), namespaces); } void ContentParent::OnCompositorDeviceReset() { Unused << SendReinitRenderingForDeviceReset(); } PClientOpenWindowOpParent* ContentParent::AllocPClientOpenWindowOpParent(const ClientOpenWindowArgs& aArgs) { return AllocClientOpenWindowOpParent(aArgs); } bool ContentParent::DeallocPClientOpenWindowOpParent(PClientOpenWindowOpParent* aActor) { return DeallocClientOpenWindowOpParent(aActor); } void ContentParent::MaybeEnableRemoteInputEventQueue() { MOZ_ASSERT(!mIsRemoteInputEventQueueEnabled); if (!IsInputEventQueueSupported()) { return; } mIsRemoteInputEventQueueEnabled = true; Unused << SendSetInputEventQueueEnabled(); SetInputPriorityEventEnabled(true); } void ContentParent::SetInputPriorityEventEnabled(bool aEnabled) { if (!IsInputEventQueueSupported() || !mIsRemoteInputEventQueueEnabled || mIsInputPriorityEventEnabled == aEnabled) { return; } mIsInputPriorityEventEnabled = aEnabled; // Send IPC messages to flush the pending events in the input event queue and // the normal event queue. See PContent.ipdl for more details. Unused << SendSuspendInputEventQueue(); Unused << SendFlushInputEventQueue(); Unused << SendResumeInputEventQueue(); } /*static*/ bool ContentParent::IsInputEventQueueSupported() { static bool sSupported = false; static bool sInitialized = false; if (!sInitialized) { MOZ_ASSERT(Preferences::IsServiceAvailable()); sSupported = Preferences::GetBool("input_event_queue.supported", false); sInitialized = true; } return sSupported; } void ContentParent::OnVarChanged(const GfxVarUpdate& aVar) { if (!mIPCOpen) { return; } Unused << SendVarUpdate(aVar); } mozilla::ipc::IPCResult ContentParent::RecvReadFontList(InfallibleTArray* retValue) { #ifdef ANDROID gfxAndroidPlatform::GetPlatform()->GetSystemFontList(retValue); #endif return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvSetClipboard(const IPCDataTransfer& aDataTransfer, const bool& aIsPrivateData, const IPC::Principal& aRequestingPrincipal, const uint32_t& aContentPolicyType, const int32_t& aWhichClipboard) { nsresult rv; nsCOMPtr clipboard(do_GetService(kCClipboardCID, &rv)); NS_ENSURE_SUCCESS(rv, IPC_OK()); nsCOMPtr trans = do_CreateInstance("@mozilla.org/widget/transferable;1", &rv); NS_ENSURE_SUCCESS(rv, IPC_OK()); trans->Init(nullptr); rv = nsContentUtils::IPCTransferableToTransferable(aDataTransfer, aIsPrivateData, aRequestingPrincipal, aContentPolicyType, trans, this, nullptr); NS_ENSURE_SUCCESS(rv, IPC_OK()); clipboard->SetData(trans, nullptr, aWhichClipboard); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvGetClipboard(nsTArray&& aTypes, const int32_t& aWhichClipboard, IPCDataTransfer* aDataTransfer) { nsresult rv; nsCOMPtr clipboard(do_GetService(kCClipboardCID, &rv)); NS_ENSURE_SUCCESS(rv, IPC_OK()); nsCOMPtr trans = do_CreateInstance("@mozilla.org/widget/transferable;1", &rv); NS_ENSURE_SUCCESS(rv, IPC_OK()); trans->Init(nullptr); for (uint32_t t = 0; t < aTypes.Length(); t++) { trans->AddDataFlavor(aTypes[t].get()); } clipboard->GetData(trans, aWhichClipboard); nsContentUtils::TransferableToIPCTransferable(trans, aDataTransfer, true, nullptr, this); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvEmptyClipboard(const int32_t& aWhichClipboard) { nsresult rv; nsCOMPtr clipboard(do_GetService(kCClipboardCID, &rv)); NS_ENSURE_SUCCESS(rv, IPC_OK()); clipboard->EmptyClipboard(aWhichClipboard); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvClipboardHasType(nsTArray&& aTypes, const int32_t& aWhichClipboard, bool* aHasType) { nsresult rv; nsCOMPtr clipboard(do_GetService(kCClipboardCID, &rv)); NS_ENSURE_SUCCESS(rv, IPC_OK()); const char** typesChrs = new const char *[aTypes.Length()]; for (uint32_t t = 0; t < aTypes.Length(); t++) { typesChrs[t] = aTypes[t].get(); } clipboard->HasDataMatchingFlavors(typesChrs, aTypes.Length(), aWhichClipboard, aHasType); delete [] typesChrs; return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvPlaySound(const URIParams& aURI) { nsCOMPtr soundURI = DeserializeURI(aURI); bool isChrome = false; // If the check here fails, it can only mean that this message was spoofed. if (!soundURI || NS_FAILED(soundURI->SchemeIs("chrome", &isChrome)) || !isChrome) { // PlaySound only accepts a valid chrome URI. return IPC_FAIL_NO_REASON(this); } nsCOMPtr soundURL(do_QueryInterface(soundURI)); if (!soundURL) { return IPC_OK(); } nsresult rv; nsCOMPtr sound(do_GetService(NS_SOUND_CID, &rv)); NS_ENSURE_SUCCESS(rv, IPC_OK()); sound->Play(soundURL); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvBeep() { nsresult rv; nsCOMPtr sound(do_GetService(NS_SOUND_CID, &rv)); NS_ENSURE_SUCCESS(rv, IPC_OK()); sound->Beep(); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvPlayEventSound(const uint32_t& aEventId) { nsresult rv; nsCOMPtr sound(do_GetService(NS_SOUND_CID, &rv)); NS_ENSURE_SUCCESS(rv, IPC_OK()); sound->PlayEventSound(aEventId); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvGetSystemColors(const uint32_t& colorsCount, InfallibleTArray* colors) { #ifdef MOZ_WIDGET_ANDROID NS_ASSERTION(AndroidBridge::Bridge() != nullptr, "AndroidBridge is not available"); if (AndroidBridge::Bridge() == nullptr) { // Do not fail - the colors won't be right, but it's not critical return IPC_OK(); } colors->AppendElements(colorsCount); // The array elements correspond to the members of AndroidSystemColors structure, // so just pass the pointer to the elements buffer AndroidBridge::Bridge()->GetSystemColors((AndroidSystemColors*)colors->Elements()); #endif return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvGetIconForExtension(const nsCString& aFileExt, const uint32_t& aIconSize, InfallibleTArray* bits) { #ifdef MOZ_WIDGET_ANDROID NS_ASSERTION(AndroidBridge::Bridge() != nullptr, "AndroidBridge is not available"); if (AndroidBridge::Bridge() == nullptr) { // Do not fail - just no icon will be shown return IPC_OK(); } bits->AppendElements(aIconSize * aIconSize * 4); AndroidBridge::Bridge()->GetIconForExtension(aFileExt, aIconSize, bits->Elements()); #endif return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvGetShowPasswordSetting(bool* showPassword) { // default behavior is to show the last password character *showPassword = true; #ifdef MOZ_WIDGET_ANDROID NS_ASSERTION(AndroidBridge::Bridge() != nullptr, "AndroidBridge is not available"); *showPassword = java::GeckoAppShell::GetShowPasswordSetting(); #endif return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvFirstIdle() { // When the ContentChild goes idle, it sends us a FirstIdle message // which we use as a good time to signal the PreallocatedProcessManager // that it can start allocating processes from now on. PreallocatedProcessManager::RemoveBlocker(this); return IPC_OK(); } // We want ContentParent to show up in CC logs for debugging purposes, but we // don't actually cycle collect it. NS_IMPL_CYCLE_COLLECTION_0(ContentParent) NS_IMPL_CYCLE_COLLECTING_ADDREF(ContentParent) NS_IMPL_CYCLE_COLLECTING_RELEASE(ContentParent) NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ContentParent) NS_INTERFACE_MAP_ENTRY(nsIContentParent) NS_INTERFACE_MAP_ENTRY(nsIObserver) NS_INTERFACE_MAP_ENTRY(nsIDOMGeoPositionCallback) NS_INTERFACE_MAP_ENTRY(nsIDOMGeoPositionErrorCallback) NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor) NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIObserver) NS_INTERFACE_MAP_END NS_IMETHODIMP ContentParent::Observe(nsISupports* aSubject, const char* aTopic, const char16_t* aData) { if (mSubprocess && (!strcmp(aTopic, "profile-before-change") || !strcmp(aTopic, "xpcom-shutdown"))) { // Okay to call ShutDownProcess multiple times. ShutDownProcess(SEND_SHUTDOWN_MESSAGE); // Wait for shutdown to complete, so that we receive any shutdown // data (e.g. telemetry) from the child before we quit. // This loop terminate prematurely based on mForceKillTimer. SpinEventLoopUntil([&]() { return !mIPCOpen || mCalledKillHard; }); NS_ASSERTION(!mSubprocess, "Close should have nulled mSubprocess"); } if (!mIsAlive || !mSubprocess) return NS_OK; // listening for memory pressure event if (!strcmp(aTopic, "memory-pressure") && !StringEndsWith(nsDependentString(aData), NS_LITERAL_STRING("-no-forward"))) { Unused << SendFlushMemory(nsDependentString(aData)); } else if (!strcmp(aTopic, "nsPref:changed")) { // A pref changed. If it's not on the blacklist, inform child processes. #define BLACKLIST_ENTRY(s) { s, (sizeof(s)/sizeof(char16_t)) - 1 } struct BlacklistEntry { const char16_t* mPrefBranch; size_t mLen; }; // These prefs are not useful in child processes. static const BlacklistEntry sContentPrefBranchBlacklist[] = { BLACKLIST_ENTRY(u"app.update.lastUpdateTime."), BLACKLIST_ENTRY(u"datareporting.policy."), BLACKLIST_ENTRY(u"browser.safebrowsing.provider."), BLACKLIST_ENTRY(u"extensions.getAddons.cache."), BLACKLIST_ENTRY(u"media.gmp-manager."), BLACKLIST_ENTRY(u"media.gmp-gmpopenh264."), }; #undef BLACKLIST_ENTRY for (const auto& entry : sContentPrefBranchBlacklist) { if (NS_strncmp(entry.mPrefBranch, aData, entry.mLen) == 0) { return NS_OK; } } // We know prefs are ASCII here. NS_LossyConvertUTF16toASCII strData(aData); Pref pref(strData, /* isLocked */ false, null_t(), null_t()); Preferences::GetPreference(&pref); if (!SendPreferenceUpdate(pref)) { return NS_ERROR_NOT_AVAILABLE; } } else if (!strcmp(aTopic, NS_IPC_IOSERVICE_SET_OFFLINE_TOPIC)) { NS_ConvertUTF16toUTF8 dataStr(aData); const char *offline = dataStr.get(); if (!SendSetOffline(!strcmp(offline, "true") ? true : false)) { return NS_ERROR_NOT_AVAILABLE; } } else if (!strcmp(aTopic, NS_IPC_IOSERVICE_SET_CONNECTIVITY_TOPIC)) { if (!SendSetConnectivity(NS_LITERAL_STRING("true").Equals(aData))) { return NS_ERROR_NOT_AVAILABLE; } } else if (!strcmp(aTopic, NS_IPC_CAPTIVE_PORTAL_SET_STATE)) { nsCOMPtr cps = do_QueryInterface(aSubject); MOZ_ASSERT(cps, "Should QI to a captive portal service"); if (!cps) { return NS_ERROR_FAILURE; } int32_t state; cps->GetState(&state); if (!SendSetCaptivePortalState(state)) { return NS_ERROR_NOT_AVAILABLE; } } // listening for alert notifications else if (!strcmp(aTopic, "alertfinished") || !strcmp(aTopic, "alertclickcallback") || !strcmp(aTopic, "alertshow") || !strcmp(aTopic, "alertdisablecallback") || !strcmp(aTopic, "alertsettingscallback")) { if (!SendNotifyAlertsObserver(nsDependentCString(aTopic), nsDependentString(aData))) return NS_ERROR_NOT_AVAILABLE; } else if (!strcmp(aTopic, "child-gc-request")){ Unused << SendGarbageCollect(); } else if (!strcmp(aTopic, "child-cc-request")){ Unused << SendCycleCollect(); } else if (!strcmp(aTopic, "child-mmu-request")){ Unused << SendMinimizeMemoryUsage(); } else if (!strcmp(aTopic, "child-ghost-request")){ Unused << SendUnlinkGhosts(); } else if (!strcmp(aTopic, "last-pb-context-exited")) { Unused << SendLastPrivateDocShellDestroyed(); } #ifdef ACCESSIBILITY else if (aData && !strcmp(aTopic, "a11y-init-or-shutdown")) { if (*aData == '1') { // Make sure accessibility is running in content process when // accessibility gets initiated in chrome process. #if defined(XP_WIN) // Don't init content a11y if we detect an incompat version of JAWS in use. if (!mozilla::a11y::Compatibility::IsOldJAWS()) { Unused << SendActivateA11y(::GetCurrentThreadId(), a11y::AccessibleWrap::GetContentProcessIdFor(ChildID())); } #else Unused << SendActivateA11y(0, 0); #endif } else { // If possible, shut down accessibility in content process when // accessibility gets shutdown in chrome process. Unused << SendShutdownA11y(); } } #endif else if (!strcmp(aTopic, "cacheservice:empty-cache")) { Unused << SendNotifyEmptyHTTPCache(); } else if (!strcmp(aTopic, "intl:app-locales-changed")) { nsTArray appLocales; LocaleService::GetInstance()->GetAppLocalesAsLangTags(appLocales); Unused << SendUpdateAppLocales(appLocales); } else if (!strcmp(aTopic, "intl:requested-locales-changed")) { nsTArray requestedLocales; LocaleService::GetInstance()->GetRequestedLocales(requestedLocales); Unused << SendUpdateRequestedLocales(requestedLocales); } else if (!strcmp(aTopic, "cookie-changed") || !strcmp(aTopic, "private-cookie-changed")) { if (!aData) { return NS_ERROR_UNEXPECTED; } PNeckoParent *neckoParent = LoneManagedOrNullAsserts(ManagedPNeckoParent()); if (!neckoParent) { return NS_OK; } PCookieServiceParent *csParent = LoneManagedOrNullAsserts(neckoParent->ManagedPCookieServiceParent()); if (!csParent) { return NS_OK; } auto *cs = static_cast(csParent); // Do not push these cookie updates to the same process they originated from. if (cs->ProcessingCookie()) { return NS_OK; } if (!nsCRT::strcmp(aData, u"batch-deleted")) { nsCOMPtr cookieList = do_QueryInterface(aSubject); NS_ASSERTION(cookieList, "couldn't get cookie list"); cs->RemoveBatchDeletedCookies(cookieList); return NS_OK; } if (!nsCRT::strcmp(aData, u"cleared")) { cs->RemoveAll(); return NS_OK; } nsCOMPtr xpcCookie = do_QueryInterface(aSubject); NS_ASSERTION(xpcCookie, "couldn't get cookie"); if (!nsCRT::strcmp(aData, u"deleted")) { cs->RemoveCookie(xpcCookie); } else if ((!nsCRT::strcmp(aData, u"added")) || (!nsCRT::strcmp(aData, u"changed"))) { cs->AddCookie(xpcCookie); } } return NS_OK; } NS_IMETHODIMP ContentParent::GetInterface(const nsIID& aIID, void** aResult) { NS_ENSURE_ARG_POINTER(aResult); if (aIID.Equals(NS_GET_IID(nsIMessageSender))) { nsCOMPtr mm = GetMessageManager(); mm.forget(aResult); return NS_OK; } return NS_NOINTERFACE; } mozilla::ipc::IPCResult ContentParent::RecvInitBackground(Endpoint&& aEndpoint) { if (!BackgroundParent::Alloc(this, Move(aEndpoint))) { return IPC_FAIL(this, "BackgroundParent::Alloc failed"); } return IPC_OK(); } mozilla::jsipc::PJavaScriptParent * ContentParent::AllocPJavaScriptParent() { MOZ_ASSERT(ManagedPJavaScriptParent().IsEmpty()); return nsIContentParent::AllocPJavaScriptParent(); } bool ContentParent::DeallocPJavaScriptParent(PJavaScriptParent *parent) { return nsIContentParent::DeallocPJavaScriptParent(parent); } PBrowserParent* ContentParent::AllocPBrowserParent(const TabId& aTabId, const TabId& aSameTabGroupAs, const IPCTabContext& aContext, const uint32_t& aChromeFlags, const ContentParentId& aCpId, const bool& aIsForBrowser) { return nsIContentParent::AllocPBrowserParent(aTabId, aSameTabGroupAs, aContext, aChromeFlags, aCpId, aIsForBrowser); } bool ContentParent::DeallocPBrowserParent(PBrowserParent* frame) { return nsIContentParent::DeallocPBrowserParent(frame); } mozilla::ipc::IPCResult ContentParent::RecvPBrowserConstructor(PBrowserParent* actor, const TabId& tabId, const TabId& sameTabGroupAs, const IPCTabContext& context, const uint32_t& chromeFlags, const ContentParentId& cpId, const bool& isForBrowser) { return nsIContentParent::RecvPBrowserConstructor(actor, tabId, sameTabGroupAs, context, chromeFlags, cpId, isForBrowser); } PIPCBlobInputStreamParent* ContentParent::AllocPIPCBlobInputStreamParent(const nsID& aID, const uint64_t& aSize) { return nsIContentParent::AllocPIPCBlobInputStreamParent(aID, aSize); } bool ContentParent::DeallocPIPCBlobInputStreamParent(PIPCBlobInputStreamParent* aActor) { return nsIContentParent::DeallocPIPCBlobInputStreamParent(aActor); } mozilla::PRemoteSpellcheckEngineParent * ContentParent::AllocPRemoteSpellcheckEngineParent() { mozilla::RemoteSpellcheckEngineParent *parent = new mozilla::RemoteSpellcheckEngineParent(); return parent; } bool ContentParent::DeallocPRemoteSpellcheckEngineParent(PRemoteSpellcheckEngineParent *parent) { delete parent; return true; } /* static */ void ContentParent::ForceKillTimerCallback(nsITimer* aTimer, void* aClosure) { // We don't want to time out the content process during XPCShell tests. This // is the easiest way to ensure that. if (PR_GetEnv("XPCSHELL_TEST_PROFILE_DIR")) { return; } auto self = static_cast(aClosure); self->KillHard("ShutDownKill"); } // WARNING: aReason appears in telemetry, so any new value passed in requires // data review. void ContentParent::KillHard(const char* aReason) { AUTO_PROFILER_LABEL("ContentParent::KillHard", OTHER); // On Windows, calling KillHard multiple times causes problems - the // process handle becomes invalid on the first call, causing a second call // to crash our process - more details in bug 890840. if (mCalledKillHard) { return; } mCalledKillHard = true; mForceKillTimer = nullptr; MessageChannel* channel = GetIPCChannel(); if (channel) { channel->SetInKillHardShutdown(); } // We're about to kill the child process associated with this content. // Something has gone wrong to get us here, so we generate a minidump // of the parent and child for submission to the crash server. if (mCrashReporter) { // GeneratePairedMinidump creates two minidumps for us - the main // one is for the content process we're about to kill, and the other // one is for the main browser process. That second one is the extra // minidump tagging along, so we have to tell the crash reporter that // it exists and is being appended. nsAutoCString additionalDumps("browser"); mCrashReporter->AddNote( NS_LITERAL_CSTRING("additional_minidumps"), additionalDumps); nsDependentCString reason(aReason); mCrashReporter->AddNote( NS_LITERAL_CSTRING("ipc_channel_error"), reason); Telemetry::Accumulate(Telemetry::SUBPROCESS_KILL_HARD, reason, 1); RefPtr self = this; std::function callback = [self](bool aResult) { self->OnGenerateMinidumpComplete(aResult); }; // Generate the report and insert into the queue for submittal. mCrashReporter->GenerateMinidumpAndPair(Process(), nullptr, NS_LITERAL_CSTRING("browser"), Move(callback), true); return; } OnGenerateMinidumpComplete(false); } void ContentParent::OnGenerateMinidumpComplete(bool aDumpResult) { if (mCrashReporter && aDumpResult) { // CrashReporterHost::GenerateMinidumpAndPair() is successful. mCreatedPairedMinidumps = mCrashReporter->FinalizeCrashReport(); } Unused << aDumpResult; // Don't care about result if no minidump was requested. ProcessHandle otherProcessHandle; if (!base::OpenProcessHandle(OtherPid(), &otherProcessHandle)) { NS_ERROR("Failed to open child process when attempting kill."); return; } if (!KillProcess(otherProcessHandle, base::PROCESS_END_KILLED_BY_USER, false)) { NS_WARNING("failed to kill subprocess!"); } if (mSubprocess) { mSubprocess->SetAlreadyDead(); } // EnsureProcessTerminated has responsibilty for closing otherProcessHandle. XRE_GetIOMessageLoop()->PostTask( NewRunnableFunction("EnsureProcessTerminatedRunnable", &ProcessWatcher::EnsureProcessTerminated, otherProcessHandle, /*force=*/true)); } void ContentParent::FriendlyName(nsAString& aName, bool aAnonymize) { aName.Truncate(); if (mIsForBrowser) { aName.AssignLiteral("Browser"); } else if (aAnonymize) { aName.AssignLiteral(""); } else { aName.AssignLiteral("???"); } } mozilla::ipc::IPCResult ContentParent::RecvInitCrashReporter(Shmem&& aShmem, const NativeThreadId& aThreadId) { mCrashReporter = MakeUnique( GeckoProcessType_Content, aShmem, aThreadId); return IPC_OK(); } hal_sandbox::PHalParent* ContentParent::AllocPHalParent() { return hal_sandbox::CreateHalParent(); } bool ContentParent::DeallocPHalParent(hal_sandbox::PHalParent* aHal) { delete aHal; return true; } devtools::PHeapSnapshotTempFileHelperParent* ContentParent::AllocPHeapSnapshotTempFileHelperParent() { return devtools::HeapSnapshotTempFileHelperParent::Create(); } bool ContentParent::DeallocPHeapSnapshotTempFileHelperParent( devtools::PHeapSnapshotTempFileHelperParent* aHeapSnapshotHelper) { delete aHeapSnapshotHelper; return true; } bool ContentParent::SendRequestMemoryReport(const uint32_t& aGeneration, const bool& aAnonymize, const bool& aMinimizeMemoryUsage, const MaybeFileDesc& aDMDFile) { // This automatically cancels the previous request. mMemoryReportRequest = MakeUnique(aGeneration); Unused << PContentParent::SendRequestMemoryReport( aGeneration, aAnonymize, aMinimizeMemoryUsage, aDMDFile); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvAddMemoryReport(const MemoryReport& aReport) { if (mMemoryReportRequest) { mMemoryReportRequest->RecvReport(aReport); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvFinishMemoryReport(const uint32_t& aGeneration) { if (mMemoryReportRequest) { mMemoryReportRequest->Finish(aGeneration); mMemoryReportRequest = nullptr; } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvAddPerformanceMetrics(nsTArray&& aMetrics) { if (!mozilla::dom::DOMPrefs::SchedulerLoggingEnabled()) { // The pref is off, we should not get a performance metrics from the content // child return IPC_OK(); } Unused << NS_WARN_IF(NS_FAILED(mozilla::NotifyPerformanceInfo(aMetrics))); return IPC_OK(); } PCycleCollectWithLogsParent* ContentParent::AllocPCycleCollectWithLogsParent(const bool& aDumpAllTraces, const FileDescriptor& aGCLog, const FileDescriptor& aCCLog) { MOZ_CRASH("Don't call this; use ContentParent::CycleCollectWithLogs"); } bool ContentParent::DeallocPCycleCollectWithLogsParent(PCycleCollectWithLogsParent* aActor) { delete aActor; return true; } bool ContentParent::CycleCollectWithLogs(bool aDumpAllTraces, nsICycleCollectorLogSink* aSink, nsIDumpGCAndCCLogsCallback* aCallback) { return CycleCollectWithLogsParent::AllocAndSendConstructor(this, aDumpAllTraces, aSink, aCallback); } PTestShellParent* ContentParent::AllocPTestShellParent() { return new TestShellParent(); } bool ContentParent::DeallocPTestShellParent(PTestShellParent* shell) { delete shell; return true; } PScriptCacheParent* ContentParent::AllocPScriptCacheParent(const FileDescOrError& cacheFile, const bool& wantCacheData) { return new loader::ScriptCacheParent(wantCacheData); } bool ContentParent::DeallocPScriptCacheParent(PScriptCacheParent* cache) { delete static_cast(cache); return true; } PNeckoParent* ContentParent::AllocPNeckoParent() { return new NeckoParent(); } bool ContentParent::DeallocPNeckoParent(PNeckoParent* necko) { delete necko; return true; } PPrintingParent* ContentParent::AllocPPrintingParent() { #ifdef NS_PRINTING if (mPrintingParent) { // Only one PrintingParent should be created per process. return nullptr; } // Create the printing singleton for this process. mPrintingParent = new PrintingParent(); // Take another reference for IPDL code. mPrintingParent.get()->AddRef(); return mPrintingParent.get(); #else MOZ_ASSERT_UNREACHABLE("Should never be created if no printing."); return nullptr; #endif } bool ContentParent::DeallocPPrintingParent(PPrintingParent* printing) { #ifdef NS_PRINTING MOZ_RELEASE_ASSERT(mPrintingParent == printing, "Only one PrintingParent should have been created per process."); // Release reference taken for IPDL code. static_cast(printing)->Release(); mPrintingParent = nullptr; #else MOZ_ASSERT_UNREACHABLE("Should never have been created if no printing."); #endif return true; } #ifdef NS_PRINTING already_AddRefed ContentParent::GetPrintingParent() { MOZ_ASSERT(mPrintingParent); RefPtr printingParent = mPrintingParent; return printingParent.forget(); } #endif mozilla::ipc::IPCResult ContentParent::RecvInitStreamFilter(const uint64_t& aChannelId, const nsString& aAddonId, InitStreamFilterResolver&& aResolver) { Endpoint endpoint; Unused << extensions::StreamFilterParent::Create(this, aChannelId, aAddonId, &endpoint); aResolver(Move(endpoint)); return IPC_OK(); } PChildToParentStreamParent* ContentParent::AllocPChildToParentStreamParent() { return nsIContentParent::AllocPChildToParentStreamParent(); } bool ContentParent::DeallocPChildToParentStreamParent(PChildToParentStreamParent* aActor) { return nsIContentParent::DeallocPChildToParentStreamParent(aActor); } PParentToChildStreamParent* ContentParent::SendPParentToChildStreamConstructor(PParentToChildStreamParent* aActor) { return PContentParent::SendPParentToChildStreamConstructor(aActor); } PParentToChildStreamParent* ContentParent::AllocPParentToChildStreamParent() { return nsIContentParent::AllocPParentToChildStreamParent(); } bool ContentParent::DeallocPParentToChildStreamParent(PParentToChildStreamParent* aActor) { return nsIContentParent::DeallocPParentToChildStreamParent(aActor); } PPSMContentDownloaderParent* ContentParent::AllocPPSMContentDownloaderParent(const uint32_t& aCertType) { RefPtr downloader = new PSMContentDownloaderParent(aCertType); return downloader.forget().take(); } bool ContentParent::DeallocPPSMContentDownloaderParent(PPSMContentDownloaderParent* aListener) { auto* listener = static_cast(aListener); RefPtr downloader = dont_AddRef(listener); return true; } PExternalHelperAppParent* ContentParent::AllocPExternalHelperAppParent(const OptionalURIParams& uri, const nsCString& aMimeContentType, const nsCString& aContentDisposition, const uint32_t& aContentDispositionHint, const nsString& aContentDispositionFilename, const bool& aForceSave, const int64_t& aContentLength, const bool& aWasFileChannel, const OptionalURIParams& aReferrer, PBrowserParent* aBrowser) { ExternalHelperAppParent *parent = new ExternalHelperAppParent(uri, aContentLength, aWasFileChannel); parent->AddRef(); parent->Init(this, aMimeContentType, aContentDisposition, aContentDispositionHint, aContentDispositionFilename, aForceSave, aReferrer, aBrowser); return parent; } bool ContentParent::DeallocPExternalHelperAppParent(PExternalHelperAppParent* aService) { ExternalHelperAppParent *parent = static_cast(aService); parent->Release(); return true; } PHandlerServiceParent* ContentParent::AllocPHandlerServiceParent() { HandlerServiceParent* actor = new HandlerServiceParent(); actor->AddRef(); return actor; } bool ContentParent::DeallocPHandlerServiceParent(PHandlerServiceParent* aHandlerServiceParent) { static_cast(aHandlerServiceParent)->Release(); return true; } media::PMediaParent* ContentParent::AllocPMediaParent() { return media::AllocPMediaParent(); } bool ContentParent::DeallocPMediaParent(media::PMediaParent *aActor) { return media::DeallocPMediaParent(aActor); } PPresentationParent* ContentParent::AllocPPresentationParent() { RefPtr actor = new PresentationParent(); return actor.forget().take(); } bool ContentParent::DeallocPPresentationParent(PPresentationParent* aActor) { RefPtr actor = dont_AddRef(static_cast(aActor)); return true; } mozilla::ipc::IPCResult ContentParent::RecvPPresentationConstructor(PPresentationParent* aActor) { if (!static_cast(aActor)->Init(mChildID)) { return IPC_FAIL_NO_REASON(this); } return IPC_OK(); } PSpeechSynthesisParent* ContentParent::AllocPSpeechSynthesisParent() { #ifdef MOZ_WEBSPEECH return new mozilla::dom::SpeechSynthesisParent(); #else return nullptr; #endif } bool ContentParent::DeallocPSpeechSynthesisParent(PSpeechSynthesisParent* aActor) { #ifdef MOZ_WEBSPEECH delete aActor; return true; #else return false; #endif } mozilla::ipc::IPCResult ContentParent::RecvPSpeechSynthesisConstructor(PSpeechSynthesisParent* aActor) { #ifdef MOZ_WEBSPEECH if (!static_cast(aActor)->SendInit()) { return IPC_FAIL_NO_REASON(this); } return IPC_OK(); #else return IPC_FAIL_NO_REASON(this); #endif } mozilla::ipc::IPCResult ContentParent::RecvStartVisitedQuery(const URIParams& aURI) { nsCOMPtr newURI = DeserializeURI(aURI); if (!newURI) { return IPC_FAIL_NO_REASON(this); } nsCOMPtr history = services::GetHistoryService(); if (history) { history->RegisterVisitedCallback(newURI, nullptr); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvVisitURI(const URIParams& uri, const OptionalURIParams& referrer, const uint32_t& flags) { nsCOMPtr ourURI = DeserializeURI(uri); if (!ourURI) { return IPC_FAIL_NO_REASON(this); } nsCOMPtr ourReferrer = DeserializeURI(referrer); nsCOMPtr history = services::GetHistoryService(); if (history) { history->VisitURI(ourURI, ourReferrer, flags); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvSetURITitle(const URIParams& uri, const nsString& title) { nsCOMPtr ourURI = DeserializeURI(uri); if (!ourURI) { return IPC_FAIL_NO_REASON(this); } nsCOMPtr history = services::GetHistoryService(); if (history) { history->SetURITitle(ourURI, title); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvIsSecureURI(const uint32_t& aType, const URIParams& aURI, const uint32_t& aFlags, const OriginAttributes& aOriginAttributes, bool* aIsSecureURI) { nsCOMPtr sss(do_GetService(NS_SSSERVICE_CONTRACTID)); if (!sss) { return IPC_FAIL_NO_REASON(this); } nsCOMPtr ourURI = DeserializeURI(aURI); if (!ourURI) { return IPC_FAIL_NO_REASON(this); } nsresult rv = sss->IsSecureURI(aType, ourURI, aFlags, aOriginAttributes, nullptr, nullptr, aIsSecureURI); if (NS_FAILED(rv)) { return IPC_FAIL_NO_REASON(this); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvAccumulateMixedContentHSTS(const URIParams& aURI, const bool& aActive, const OriginAttributes& aOriginAttributes) { nsCOMPtr ourURI = DeserializeURI(aURI); if (!ourURI) { return IPC_FAIL_NO_REASON(this); } nsMixedContentBlocker::AccumulateMixedContentHSTS(ourURI, aActive, aOriginAttributes); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvLoadURIExternal(const URIParams& uri, PBrowserParent* windowContext) { nsCOMPtr extProtService(do_GetService(NS_EXTERNALPROTOCOLSERVICE_CONTRACTID)); if (!extProtService) { return IPC_OK(); } nsCOMPtr ourURI = DeserializeURI(uri); if (!ourURI) { return IPC_FAIL_NO_REASON(this); } RefPtr context = new RemoteWindowContext(static_cast(windowContext)); extProtService->LoadURI(ourURI, context); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvExtProtocolChannelConnectParent(const uint32_t& registrarId) { nsresult rv; // First get the real channel created before redirect on the parent. nsCOMPtr channel; rv = NS_LinkRedirectChannels(registrarId, nullptr, getter_AddRefs(channel)); NS_ENSURE_SUCCESS(rv, IPC_OK()); nsCOMPtr parent = do_QueryInterface(channel, &rv); NS_ENSURE_SUCCESS(rv, IPC_OK()); // The channel itself is its own (faked) parent, link it. rv = NS_LinkRedirectChannels(registrarId, parent, getter_AddRefs(channel)); NS_ENSURE_SUCCESS(rv, IPC_OK()); // Signal the parent channel that it's a redirect-to parent. This will // make AsyncOpen on it do nothing (what we want). // Yes, this is a bit of a hack, but I don't think it's necessary to invent // a new interface just to set this flag on the channel. parent->SetParentListener(nullptr); return IPC_OK(); } bool ContentParent::HasNotificationPermission(const IPC::Principal& aPrincipal) { return true; } mozilla::ipc::IPCResult ContentParent::RecvShowAlert(nsIAlertNotification* aAlert) { if (!aAlert) { return IPC_FAIL_NO_REASON(this); } nsCOMPtr principal; nsresult rv = aAlert->GetPrincipal(getter_AddRefs(principal)); if (NS_WARN_IF(NS_FAILED(rv)) || !HasNotificationPermission(IPC::Principal(principal))) { return IPC_OK(); } nsCOMPtr sysAlerts(do_GetService(NS_ALERTSERVICE_CONTRACTID)); if (sysAlerts) { sysAlerts->ShowAlert(aAlert, this); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvCloseAlert(const nsString& aName, const IPC::Principal& aPrincipal) { if (!HasNotificationPermission(aPrincipal)) { return IPC_OK(); } nsCOMPtr sysAlerts(do_GetService(NS_ALERTSERVICE_CONTRACTID)); if (sysAlerts) { sysAlerts->CloseAlert(aName, aPrincipal); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvDisableNotifications(const IPC::Principal& aPrincipal) { if (HasNotificationPermission(aPrincipal)) { Unused << Notification::RemovePermission(aPrincipal); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvOpenNotificationSettings(const IPC::Principal& aPrincipal) { if (HasNotificationPermission(aPrincipal)) { Unused << Notification::OpenSettings(aPrincipal); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvSyncMessage(const nsString& aMsg, const ClonedMessageData& aData, InfallibleTArray&& aCpows, const IPC::Principal& aPrincipal, nsTArray* aRetvals) { return nsIContentParent::RecvSyncMessage(aMsg, aData, Move(aCpows), aPrincipal, aRetvals); } mozilla::ipc::IPCResult ContentParent::RecvRpcMessage(const nsString& aMsg, const ClonedMessageData& aData, InfallibleTArray&& aCpows, const IPC::Principal& aPrincipal, nsTArray* aRetvals) { return nsIContentParent::RecvRpcMessage(aMsg, aData, Move(aCpows), aPrincipal, aRetvals); } mozilla::ipc::IPCResult ContentParent::RecvAsyncMessage(const nsString& aMsg, InfallibleTArray&& aCpows, const IPC::Principal& aPrincipal, const ClonedMessageData& aData) { return nsIContentParent::RecvAsyncMessage(aMsg, Move(aCpows), aPrincipal, aData); } static int32_t AddGeolocationListener(nsIDOMGeoPositionCallback* watcher, nsIDOMGeoPositionErrorCallback* errorCallBack, bool highAccuracy) { nsCOMPtr geo = do_GetService("@mozilla.org/geolocation;1"); if (!geo) { return -1; } UniquePtr options = MakeUnique(); options->mTimeout = 0; options->mMaximumAge = 0; options->mEnableHighAccuracy = highAccuracy; int32_t retval = 1; geo->WatchPosition(watcher, errorCallBack, Move(options), &retval); return retval; } mozilla::ipc::IPCResult ContentParent::RecvAddGeolocationListener(const IPC::Principal& aPrincipal, const bool& aHighAccuracy) { // To ensure no geolocation updates are skipped, we always force the // creation of a new listener. RecvRemoveGeolocationListener(); mGeolocationWatchID = AddGeolocationListener(this, this, aHighAccuracy); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvRemoveGeolocationListener() { if (mGeolocationWatchID != -1) { nsCOMPtr geo = do_GetService("@mozilla.org/geolocation;1"); if (!geo) { return IPC_OK(); } geo->ClearWatch(mGeolocationWatchID); mGeolocationWatchID = -1; } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvSetGeolocationHigherAccuracy(const bool& aEnable) { // This should never be called without a listener already present, // so this check allows us to forgo securing privileges. if (mGeolocationWatchID != -1) { RecvRemoveGeolocationListener(); mGeolocationWatchID = AddGeolocationListener(this, this, aEnable); } return IPC_OK(); } NS_IMETHODIMP ContentParent::HandleEvent(nsIDOMGeoPosition* postion) { Unused << SendGeolocationUpdate(postion); return NS_OK; } NS_IMETHODIMP ContentParent::HandleEvent(nsIDOMGeoPositionError* postionError) { int16_t errorCode; nsresult rv; rv = postionError->GetCode(&errorCode); NS_ENSURE_SUCCESS(rv,rv); Unused << SendGeolocationError(errorCode); return NS_OK; } nsConsoleService * ContentParent::GetConsoleService() { if (mConsoleService) { return mConsoleService.get(); } // XXXkhuey everything about this is terrible. // Get the ConsoleService by CID rather than ContractID, so that we // can cast the returned pointer to an nsConsoleService (rather than // just an nsIConsoleService). This allows us to call the non-idl function // nsConsoleService::LogMessageWithMode. NS_DEFINE_CID(consoleServiceCID, NS_CONSOLESERVICE_CID); nsCOMPtr consoleService(do_GetService(consoleServiceCID)); mConsoleService = static_cast(consoleService.get()); return mConsoleService.get(); } mozilla::ipc::IPCResult ContentParent::RecvConsoleMessage(const nsString& aMessage) { RefPtr consoleService = GetConsoleService(); if (!consoleService) { return IPC_OK(); } RefPtr msg(new nsConsoleMessage(aMessage.get())); consoleService->LogMessageWithMode(msg, nsConsoleService::SuppressLog); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvScriptError(const nsString& aMessage, const nsString& aSourceName, const nsString& aSourceLine, const uint32_t& aLineNumber, const uint32_t& aColNumber, const uint32_t& aFlags, const nsCString& aCategory, const bool& aFromPrivateWindow) { return RecvScriptErrorInternal(aMessage, aSourceName, aSourceLine, aLineNumber, aColNumber, aFlags, aCategory, aFromPrivateWindow); } mozilla::ipc::IPCResult ContentParent::RecvScriptErrorWithStack(const nsString& aMessage, const nsString& aSourceName, const nsString& aSourceLine, const uint32_t& aLineNumber, const uint32_t& aColNumber, const uint32_t& aFlags, const nsCString& aCategory, const bool& aFromPrivateWindow, const ClonedMessageData& aFrame) { return RecvScriptErrorInternal(aMessage, aSourceName, aSourceLine, aLineNumber, aColNumber, aFlags, aCategory, aFromPrivateWindow, &aFrame); } mozilla::ipc::IPCResult ContentParent::RecvScriptErrorInternal(const nsString& aMessage, const nsString& aSourceName, const nsString& aSourceLine, const uint32_t& aLineNumber, const uint32_t& aColNumber, const uint32_t& aFlags, const nsCString& aCategory, const bool& aFromPrivateWindow, const ClonedMessageData* aStack) { RefPtr consoleService = GetConsoleService(); if (!consoleService) { return IPC_OK(); } nsCOMPtr msg; if (aStack) { StructuredCloneData data; UnpackClonedMessageDataForParent(*aStack, data); AutoJSAPI jsapi; if (NS_WARN_IF(!jsapi.Init(xpc::PrivilegedJunkScope()))) { MOZ_CRASH(); } JSContext* cx = jsapi.cx(); JS::RootedValue stack(cx); ErrorResult rv; data.Read(cx, &stack, rv); if (rv.Failed() || !stack.isObject()) { rv.SuppressException(); return IPC_OK(); } JS::RootedObject stackObj(cx, &stack.toObject()); msg = new nsScriptErrorWithStack(stackObj); } else { msg = new nsScriptError(); } nsresult rv = msg->Init(aMessage, aSourceName, aSourceLine, aLineNumber, aColNumber, aFlags, aCategory.get(), aFromPrivateWindow); if (NS_FAILED(rv)) return IPC_OK(); consoleService->LogMessageWithMode(msg, nsConsoleService::SuppressLog); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvPrivateDocShellsExist(const bool& aExist) { if (!sPrivateContent) sPrivateContent = new nsTArray(); if (aExist) { sPrivateContent->AppendElement(this); } else { sPrivateContent->RemoveElement(this); // Only fire the notification if we have private and non-private // windows: if privatebrowsing.autostart is true, all windows are // private. if (!sPrivateContent->Length() && !Preferences::GetBool("browser.privatebrowsing.autostart")) { nsCOMPtr obs = mozilla::services::GetObserverService(); obs->NotifyObservers(nullptr, "last-pb-context-exited", nullptr); delete sPrivateContent; sPrivateContent = nullptr; } } return IPC_OK(); } bool ContentParent::DoLoadMessageManagerScript(const nsAString& aURL, bool aRunInGlobalScope) { MOZ_ASSERT(!aRunInGlobalScope); return SendLoadProcessScript(nsString(aURL)); } nsresult ContentParent::DoSendAsyncMessage(JSContext* aCx, const nsAString& aMessage, StructuredCloneData& aHelper, JS::Handle aCpows, nsIPrincipal* aPrincipal) { ClonedMessageData data; if (!BuildClonedMessageDataForParent(this, aHelper, data)) { return NS_ERROR_DOM_DATA_CLONE_ERR; } InfallibleTArray cpows; jsipc::CPOWManager* mgr = GetCPOWManager(); if (aCpows && (!mgr || !mgr->Wrap(aCx, aCpows, &cpows))) { return NS_ERROR_UNEXPECTED; } if (!SendAsyncMessage(nsString(aMessage), cpows, Principal(aPrincipal), data)) { return NS_ERROR_UNEXPECTED; } return NS_OK; } PIPCBlobInputStreamParent* ContentParent::SendPIPCBlobInputStreamConstructor(PIPCBlobInputStreamParent* aActor, const nsID& aID, const uint64_t& aSize) { return PContentParent::SendPIPCBlobInputStreamConstructor(aActor, aID, aSize); } PBrowserParent* ContentParent::SendPBrowserConstructor(PBrowserParent* aActor, const TabId& aTabId, const TabId& aSameTabGroupAs, const IPCTabContext& aContext, const uint32_t& aChromeFlags, const ContentParentId& aCpId, const bool& aIsForBrowser) { return PContentParent::SendPBrowserConstructor(aActor, aTabId, aSameTabGroupAs, aContext, aChromeFlags, aCpId, aIsForBrowser); } mozilla::ipc::IPCResult ContentParent::RecvKeywordToURI(const nsCString& aKeyword, nsString* aProviderName, RefPtr* aPostData, OptionalURIParams* aURI) { *aPostData = nullptr; *aURI = void_t(); nsCOMPtr fixup = do_GetService(NS_URIFIXUP_CONTRACTID); if (!fixup) { return IPC_OK(); } nsCOMPtr info; if (NS_FAILED(fixup->KeywordToURI(aKeyword, getter_AddRefs(*aPostData), getter_AddRefs(info)))) { return IPC_OK(); } info->GetKeywordProviderName(*aProviderName); nsCOMPtr uri; info->GetPreferredURI(getter_AddRefs(uri)); SerializeURI(uri, *aURI); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvNotifyKeywordSearchLoading(const nsString &aProvider, const nsString &aKeyword) { #ifdef MOZ_TOOLKIT_SEARCH nsCOMPtr searchSvc = do_GetService("@mozilla.org/browser/search-service;1"); if (searchSvc) { nsCOMPtr searchEngine; searchSvc->GetEngineByName(aProvider, getter_AddRefs(searchEngine)); if (searchEngine) { nsCOMPtr obsSvc = mozilla::services::GetObserverService(); if (obsSvc) { // Note that "keyword-search" refers to a search via the url // bar, not a bookmarks keyword search. obsSvc->NotifyObservers(searchEngine, "keyword-search", aKeyword.get()); } } } #endif return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvCopyFavicon(const URIParams& aOldURI, const URIParams& aNewURI, const IPC::Principal& aLoadingPrincipal, const bool& aInPrivateBrowsing) { nsCOMPtr oldURI = DeserializeURI(aOldURI); if (!oldURI) { return IPC_OK(); } nsCOMPtr newURI = DeserializeURI(aNewURI); if (!newURI) { return IPC_OK(); } nsDocShell::CopyFavicon(oldURI, newURI, aLoadingPrincipal, aInPrivateBrowsing); return IPC_OK(); } bool ContentParent::ShouldContinueFromReplyTimeout() { RefPtr monitor = ProcessHangMonitor::Get(); return !monitor || !monitor->ShouldTimeOutCPOWs(); } mozilla::ipc::IPCResult ContentParent::RecvRecordingDeviceEvents(const nsString& aRecordingStatus, const nsString& aPageURL, const bool& aIsAudio, const bool& aIsVideo) { nsCOMPtr obs = mozilla::services::GetObserverService(); if (obs) { // recording-device-ipc-events needs to gather more information from content process RefPtr props = new nsHashPropertyBag(); props->SetPropertyAsUint64(NS_LITERAL_STRING("childID"), ChildID()); props->SetPropertyAsBool(NS_LITERAL_STRING("isAudio"), aIsAudio); props->SetPropertyAsBool(NS_LITERAL_STRING("isVideo"), aIsVideo); props->SetPropertyAsAString(NS_LITERAL_STRING("requestURL"), aPageURL); obs->NotifyObservers((nsIPropertyBag2*) props, "recording-device-ipc-events", aRecordingStatus.get()); } else { NS_WARNING("Could not get the Observer service for ContentParent::RecvRecordingDeviceEvents."); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvAddIdleObserver(const uint64_t& aObserver, const uint32_t& aIdleTimeInS) { nsresult rv; nsCOMPtr idleService = do_GetService("@mozilla.org/widget/idleservice;1", &rv); NS_ENSURE_SUCCESS(rv, IPC_FAIL_NO_REASON(this)); RefPtr listener = new ParentIdleListener(this, aObserver, aIdleTimeInS); rv = idleService->AddIdleObserver(listener, aIdleTimeInS); NS_ENSURE_SUCCESS(rv, IPC_FAIL_NO_REASON(this)); mIdleListeners.AppendElement(listener); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvRemoveIdleObserver(const uint64_t& aObserver, const uint32_t& aIdleTimeInS) { RefPtr listener; for (int32_t i = mIdleListeners.Length() - 1; i >= 0; --i) { listener = static_cast(mIdleListeners[i].get()); if (listener->mObserver == aObserver && listener->mTime == aIdleTimeInS) { nsresult rv; nsCOMPtr idleService = do_GetService("@mozilla.org/widget/idleservice;1", &rv); NS_ENSURE_SUCCESS(rv, IPC_FAIL_NO_REASON(this)); idleService->RemoveIdleObserver(listener, aIdleTimeInS); mIdleListeners.RemoveElementAt(i); break; } } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvBackUpXResources(const FileDescriptor& aXSocketFd) { #ifndef MOZ_X11 MOZ_CRASH("This message only makes sense on X11 platforms"); #else MOZ_ASSERT(0 > mChildXSocketFdDup.get(), "Already backed up X resources??"); if (aXSocketFd.IsValid()) { auto rawFD = aXSocketFd.ClonePlatformHandle(); mChildXSocketFdDup.reset(rawFD.release()); } #endif return IPC_OK(); } class AnonymousTemporaryFileRequestor final : public Runnable { public: AnonymousTemporaryFileRequestor(ContentParent* aCP, const uint64_t& aID) : Runnable("dom::AnonymousTemporaryFileRequestor") , mCP(aCP) , mID(aID) , mRv(NS_OK) , mPRFD(nullptr) { } NS_IMETHOD Run() override { if (NS_IsMainThread()) { FileDescOrError result; if (NS_WARN_IF(NS_FAILED(mRv))) { // Returning false will kill the child process; instead // propagate the error and let the child handle it. result = mRv; } else { result = FileDescriptor(FileDescriptor::PlatformHandleType(PR_FileDesc2NativeHandle(mPRFD))); // The FileDescriptor object owns a duplicate of the file handle; we // must close the original (and clean up the NSPR descriptor). PR_Close(mPRFD); } Unused << mCP->SendProvideAnonymousTemporaryFile(mID, result); // It's important to release this reference while wr're on the main thread! mCP = nullptr; } else { mRv = NS_OpenAnonymousTemporaryFile(&mPRFD); NS_DispatchToMainThread(this); } return NS_OK; } private: RefPtr mCP; uint64_t mID; nsresult mRv; PRFileDesc* mPRFD; }; mozilla::ipc::IPCResult ContentParent::RecvRequestAnonymousTemporaryFile(const uint64_t& aID) { // Make sure to send a callback to the child if we bail out early. nsresult rv = NS_OK; RefPtr self(this); auto autoNotifyChildOnError = MakeScopeExit([&, self]() { if (NS_FAILED(rv)) { FileDescOrError result(rv); Unused << self->SendProvideAnonymousTemporaryFile(aID, result); } }); // We use a helper runnable to open the anonymous temporary file on the IO // thread. The same runnable will call us back on the main thread when the // file has been opened. nsCOMPtr target = do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID, &rv); if (!target) { return IPC_OK(); } rv = target->Dispatch(new AnonymousTemporaryFileRequestor(this, aID), NS_DISPATCH_NORMAL); if (NS_WARN_IF(NS_FAILED(rv))) { return IPC_OK(); } rv = NS_OK; return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvCreateAudioIPCConnection(CreateAudioIPCConnectionResolver&& aResolver) { FileDescriptor fd = CubebUtils::CreateAudioIPCConnection(); if (!fd.IsValid()) { return IPC_FAIL(this, "CubebUtils::CreateAudioIPCConnection failed"); } aResolver(Move(fd)); return IPC_OK(); } static NS_DEFINE_CID(kFormProcessorCID, NS_FORMPROCESSOR_CID); mozilla::ipc::IPCResult ContentParent::RecvKeygenProcessValue(const nsString& oldValue, const nsString& challenge, const nsString& keytype, const nsString& keyparams, nsString* newValue) { nsCOMPtr formProcessor = do_GetService(kFormProcessorCID); if (!formProcessor) { newValue->Truncate(); return IPC_OK(); } formProcessor->ProcessValueIPC(oldValue, challenge, keytype, keyparams, *newValue); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvKeygenProvideContent(nsString* aAttribute, nsTArray* aContent) { nsCOMPtr formProcessor = do_GetService(kFormProcessorCID); if (!formProcessor) { return IPC_OK(); } formProcessor->ProvideContent(NS_LITERAL_STRING("SELECT"), *aContent, *aAttribute); return IPC_OK(); } PFileDescriptorSetParent* ContentParent::SendPFileDescriptorSetConstructor(const FileDescriptor& aFD) { return PContentParent::SendPFileDescriptorSetConstructor(aFD); } PFileDescriptorSetParent* ContentParent::AllocPFileDescriptorSetParent(const FileDescriptor& aFD) { return nsIContentParent::AllocPFileDescriptorSetParent(aFD); } bool ContentParent::DeallocPFileDescriptorSetParent(PFileDescriptorSetParent* aActor) { return nsIContentParent::DeallocPFileDescriptorSetParent(aActor); } bool ContentParent::IgnoreIPCPrincipal() { static bool sDidAddVarCache = false; static bool sIgnoreIPCPrincipal = false; if (!sDidAddVarCache) { sDidAddVarCache = true; Preferences::AddBoolVarCache(&sIgnoreIPCPrincipal, "dom.testing.ignore_ipc_principal", false); } return sIgnoreIPCPrincipal; } void ContentParent::NotifyUpdatedDictionaries() { nsCOMPtr spellChecker(do_GetService(NS_SPELLCHECKER_CONTRACTID)); MOZ_ASSERT(spellChecker, "No spell checker?"); InfallibleTArray dictionaries; spellChecker->GetDictionaryList(&dictionaries); for (auto* cp : AllProcesses(eLive)) { Unused << cp->SendUpdateDictionaryList(dictionaries); } } void ContentParent::NotifyUpdatedFonts() { InfallibleTArray fontList; gfxPlatform::GetPlatform()->ReadSystemFontList(&fontList); for (auto* cp : AllProcesses(eLive)) { Unused << cp->SendUpdateFontList(fontList); } } /*static*/ void ContentParent::UnregisterRemoteFrame(const TabId& aTabId, const ContentParentId& aCpId, bool aMarkedDestroying) { if (XRE_IsParentProcess()) { ContentProcessManager* cpm = ContentProcessManager::GetSingleton(); ContentParent* cp = cpm->GetContentProcessById(aCpId); if (!cp) { return; } cp->NotifyTabDestroyed(aTabId, aMarkedDestroying); ContentProcessManager::GetSingleton()->UnregisterRemoteFrame(aCpId, aTabId); } else { ContentChild::GetSingleton()->SendUnregisterRemoteFrame(aTabId, aCpId, aMarkedDestroying); } } mozilla::ipc::IPCResult ContentParent::RecvUnregisterRemoteFrame(const TabId& aTabId, const ContentParentId& aCpId, const bool& aMarkedDestroying) { UnregisterRemoteFrame(aTabId, aCpId, aMarkedDestroying); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvNotifyTabDestroying(const TabId& aTabId, const ContentParentId& aCpId) { NotifyTabDestroying(aTabId, aCpId); return IPC_OK(); } nsTArray ContentParent::GetManagedTabContext() { return Move(ContentProcessManager::GetSingleton()-> GetTabContextByContentProcess(this->ChildID())); } mozilla::docshell::POfflineCacheUpdateParent* ContentParent::AllocPOfflineCacheUpdateParent(const URIParams& aManifestURI, const URIParams& aDocumentURI, const PrincipalInfo& aLoadingPrincipalInfo, const bool& aStickDocument) { RefPtr update = new mozilla::docshell::OfflineCacheUpdateParent(); // Use this reference as the IPDL reference. return update.forget().take(); } mozilla::ipc::IPCResult ContentParent::RecvPOfflineCacheUpdateConstructor(POfflineCacheUpdateParent* aActor, const URIParams& aManifestURI, const URIParams& aDocumentURI, const PrincipalInfo& aLoadingPrincipal, const bool& aStickDocument) { MOZ_ASSERT(aActor); RefPtr update = static_cast(aActor); nsresult rv = update->Schedule(aManifestURI, aDocumentURI, aLoadingPrincipal, aStickDocument); if (NS_FAILED(rv) && IsAlive()) { // Inform the child of failure. Unused << update->SendFinish(false, false); } return IPC_OK(); } bool ContentParent::DeallocPOfflineCacheUpdateParent(POfflineCacheUpdateParent* aActor) { // Reclaim the IPDL reference. RefPtr update = dont_AddRef(static_cast(aActor)); return true; } PWebrtcGlobalParent * ContentParent::AllocPWebrtcGlobalParent() { #ifdef MOZ_WEBRTC return WebrtcGlobalParent::Alloc(); #else return nullptr; #endif } bool ContentParent::DeallocPWebrtcGlobalParent(PWebrtcGlobalParent *aActor) { #ifdef MOZ_WEBRTC WebrtcGlobalParent::Dealloc(static_cast(aActor)); return true; #else return false; #endif } mozilla::ipc::IPCResult ContentParent::RecvSetOfflinePermission(const Principal& aPrincipal) { nsIPrincipal* principal = aPrincipal; nsContentUtils::MaybeAllowOfflineAppByDefault(principal); return IPC_OK(); } void ContentParent::MaybeInvokeDragSession(TabParent* aParent) { // dnd uses IPCBlob to transfer data to the content process and the IPC // message is sent as normal priority. When sending input events with input // priority, the message may be preempted by the later dnd events. To make // sure the input events and the blob message are processed in time order // on the content process, we temporarily send the input events with normal // priority when there is an active dnd session. SetInputPriorityEventEnabled(false); nsCOMPtr dragService = do_GetService("@mozilla.org/widget/dragservice;1"); if (dragService && dragService->MaybeAddChildProcess(this)) { // We need to send transferable data to child process. nsCOMPtr session; dragService->GetCurrentSession(getter_AddRefs(session)); if (session) { nsTArray dataTransfers; RefPtr transfer = session->GetDataTransfer(); if (!transfer) { // Pass eDrop to get DataTransfer with external // drag formats cached. transfer = new DataTransfer(nullptr, eDrop, true, -1); session->SetDataTransfer(transfer); } // Note, even though this fills the DataTransfer object with // external data, the data is usually transfered over IPC lazily when // needed. transfer->FillAllExternalData(); nsCOMPtr lc = aParent ? aParent->GetLoadContext() : nullptr; nsCOMPtr transferables = transfer->GetTransferables(lc); nsContentUtils::TransferablesToIPCTransferables(transferables, dataTransfers, false, nullptr, this); uint32_t action; session->GetDragAction(&action); mozilla::Unused << SendInvokeDragSession(dataTransfers, action); } } } mozilla::ipc::IPCResult ContentParent::RecvUpdateDropEffect(const uint32_t& aDragAction, const uint32_t& aDropEffect) { nsCOMPtr dragSession = nsContentUtils::GetDragSession(); if (dragSession) { dragSession->SetDragAction(aDragAction); RefPtr dt = dragSession->GetDataTransfer(); if (dt) { dt->SetDropEffectInt(aDropEffect); } dragSession->UpdateDragEffect(); } return IPC_OK(); } PContentPermissionRequestParent* ContentParent::AllocPContentPermissionRequestParent(const InfallibleTArray& aRequests, const IPC::Principal& aPrincipal, const bool& aIsHandlingUserInput, const TabId& aTabId) { ContentProcessManager* cpm = ContentProcessManager::GetSingleton(); RefPtr tp = cpm->GetTopLevelTabParentByProcessAndTabId(this->ChildID(), aTabId); if (!tp) { return nullptr; } return nsContentPermissionUtils::CreateContentPermissionRequestParent(aRequests, tp->GetOwnerElement(), aPrincipal, aIsHandlingUserInput, aTabId); } bool ContentParent::DeallocPContentPermissionRequestParent(PContentPermissionRequestParent* actor) { nsContentPermissionUtils::NotifyRemoveContentPermissionRequestParent(actor); delete actor; return true; } PWebBrowserPersistDocumentParent* ContentParent::AllocPWebBrowserPersistDocumentParent(PBrowserParent* aBrowser, const uint64_t& aOuterWindowID) { return new WebBrowserPersistDocumentParent(); } bool ContentParent::DeallocPWebBrowserPersistDocumentParent(PWebBrowserPersistDocumentParent* aActor) { delete aActor; return true; } mozilla::ipc::IPCResult ContentParent::CommonCreateWindow(PBrowserParent* aThisTab, bool aSetOpener, const uint32_t& aChromeFlags, const bool& aCalledFromJS, const bool& aPositionSpecified, const bool& aSizeSpecified, nsIURI* aURIToLoad, const nsCString& aFeatures, const nsCString& aBaseURI, const float& aFullZoom, uint64_t aNextTabParentId, const nsString& aName, nsresult& aResult, nsCOMPtr& aNewTabParent, bool* aWindowIsNew, nsIPrincipal* aTriggeringPrincipal, uint32_t aReferrerPolicy, bool aLoadURI) { // The content process should never be in charge of computing whether or // not a window should be private or remote - the parent will do that. const uint32_t badFlags = nsIWebBrowserChrome::CHROME_PRIVATE_WINDOW | nsIWebBrowserChrome::CHROME_NON_PRIVATE_WINDOW | nsIWebBrowserChrome::CHROME_PRIVATE_LIFETIME | nsIWebBrowserChrome::CHROME_REMOTE_WINDOW; if (!!(aChromeFlags & badFlags)) { return IPC_FAIL(this, "Forbidden aChromeFlags passed"); } TabParent* thisTabParent = TabParent::GetFrom(aThisTab); nsCOMPtr frame; if (thisTabParent) { frame = do_QueryInterface(thisTabParent->GetOwnerElement()); if (NS_WARN_IF(thisTabParent->IsMozBrowser())) { return IPC_FAIL(this, "aThisTab is not a MozBrowser"); } } nsCOMPtr outerWin; if (frame) { outerWin = frame->OwnerDoc()->GetWindow(); // If our chrome window is in the process of closing, don't try to open a // new tab in it. if (outerWin && outerWin->Closed()) { outerWin = nullptr; } } nsCOMPtr browserDOMWin; if (thisTabParent) { browserDOMWin = thisTabParent->GetBrowserDOMWindow(); } // If we haven't found a chrome window to open in, just use the most recently // opened one. if (!outerWin) { outerWin = nsContentUtils::GetMostRecentNonPBWindow(); if (NS_WARN_IF(!outerWin)) { aResult = NS_ERROR_FAILURE; return IPC_OK(); } nsCOMPtr rootChromeWin = do_QueryInterface(outerWin); if (rootChromeWin) { rootChromeWin->GetBrowserDOMWindow(getter_AddRefs(browserDOMWin)); } } int32_t openLocation = nsWindowWatcher::GetWindowOpenLocation( outerWin, aChromeFlags, aCalledFromJS, aPositionSpecified, aSizeSpecified); MOZ_ASSERT(openLocation == nsIBrowserDOMWindow::OPEN_NEWTAB || openLocation == nsIBrowserDOMWindow::OPEN_NEWWINDOW); // Read the origin attributes for the tab from the opener tabParent. OriginAttributes openerOriginAttributes; if (thisTabParent) { nsCOMPtr loadContext = thisTabParent->GetLoadContext(); loadContext->GetOriginAttributes(openerOriginAttributes); } else if (Preferences::GetBool("browser.privatebrowsing.autostart")) { openerOriginAttributes.mPrivateBrowsingId = 1; } if (openLocation == nsIBrowserDOMWindow::OPEN_NEWTAB) { if (NS_WARN_IF(!browserDOMWin)) { aResult = NS_ERROR_ABORT; return IPC_OK(); } nsCOMPtr opener = do_QueryInterface(frame); nsCOMPtr params = new nsOpenURIInFrameParams(openerOriginAttributes, opener); params->SetReferrer(NS_ConvertUTF8toUTF16(aBaseURI)); MOZ_ASSERT(aTriggeringPrincipal, "need a valid triggeringPrincipal"); params->SetTriggeringPrincipal(aTriggeringPrincipal); params->SetReferrerPolicy(aReferrerPolicy); nsCOMPtr frameLoaderOwner; if (aLoadURI) { aResult = browserDOMWin->OpenURIInFrame(aURIToLoad, params, openLocation, nsIBrowserDOMWindow::OPEN_NEW, aNextTabParentId, aName, getter_AddRefs(frameLoaderOwner)); } else { aResult = browserDOMWin->CreateContentWindowInFrame(aURIToLoad, params, openLocation, nsIBrowserDOMWindow::OPEN_NEW, aNextTabParentId, aName, getter_AddRefs(frameLoaderOwner)); } if (NS_SUCCEEDED(aResult) && frameLoaderOwner) { RefPtr frameLoader = frameLoaderOwner->GetFrameLoader(); if (frameLoader) { aNewTabParent = frameLoader->GetTabParent(); // At this point, it's possible the inserted frameloader hasn't gone through // layout yet. To ensure that the dimensions that we send down when telling the // frameloader to display will be correct (instead of falling back to a 10x10 // default), we force layout if necessary to get the most up-to-date dimensions. // See bug 1358712 for details. frameLoader->ForceLayoutIfNecessary(); } } else if (NS_SUCCEEDED(aResult) && !frameLoaderOwner) { // Fall through to the normal window opening code path when there is no // window which we can open a new tab in. openLocation = nsIBrowserDOMWindow::OPEN_NEWWINDOW; } else { *aWindowIsNew = false; } // If we didn't retarget our window open into a new window, we should return now. if (openLocation != nsIBrowserDOMWindow::OPEN_NEWWINDOW) { return IPC_OK(); } } nsCOMPtr pwwatch = do_GetService(NS_WINDOWWATCHER_CONTRACTID, &aResult); if (NS_WARN_IF(NS_FAILED(aResult))) { return IPC_OK(); } aResult = pwwatch->OpenWindowWithTabParent(thisTabParent, aFeatures, aCalledFromJS, aFullZoom, aNextTabParentId, !aSetOpener, getter_AddRefs(aNewTabParent)); if (NS_WARN_IF(NS_FAILED(aResult))) { return IPC_OK(); } MOZ_ASSERT(aNewTabParent); // At this point, it's possible the inserted frameloader hasn't gone through // layout yet. To ensure that the dimensions that we send down when telling the // frameloader to display will be correct (instead of falling back to a 10x10 // default), we force layout if necessary to get the most up-to-date dimensions. // See bug 1358712 for details. // // This involves doing a bit of gymnastics in order to get at the FrameLoader, // so we scope this to avoid polluting the main function scope. { nsCOMPtr frameElement = TabParent::GetFrom(aNewTabParent)->GetOwnerElement(); MOZ_ASSERT(frameElement); nsCOMPtr frameLoaderOwner = do_QueryInterface(frameElement); MOZ_ASSERT(frameLoaderOwner); RefPtr frameLoader = frameLoaderOwner->GetFrameLoader(); MOZ_ASSERT(frameLoader); frameLoader->ForceLayoutIfNecessary(); } // If we were passed a name for the window which would override the default, // we should send it down to the new tab. if (nsContentUtils::IsOverridingWindowName(aName)) { Unused << TabParent::GetFrom(aNewTabParent)->SendSetWindowName(aName); } // Don't send down the OriginAttributes if the content process is handling // setting up the window for us. We only want to send them in the async case. // // If we send it down in the non-async case, then we might set the // OriginAttributes after the document has already navigated. if (!aSetOpener) { Unused << TabParent::GetFrom(aNewTabParent) ->SendSetOriginAttributes(openerOriginAttributes); } if (aURIToLoad && aLoadURI) { nsCOMPtr openerWindow; if (aSetOpener && thisTabParent) { openerWindow = thisTabParent->GetParentWindowOuter(); } nsCOMPtr newBrowserDOMWin = TabParent::GetFrom(aNewTabParent)->GetBrowserDOMWindow(); if (NS_WARN_IF(!newBrowserDOMWin)) { aResult = NS_ERROR_ABORT; return IPC_OK(); } nsCOMPtr win; aResult = newBrowserDOMWin->OpenURI(aURIToLoad, openerWindow, nsIBrowserDOMWindow::OPEN_CURRENTWINDOW, nsIBrowserDOMWindow::OPEN_NEW, aTriggeringPrincipal, getter_AddRefs(win)); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvCreateWindow(PBrowserParent* aThisTab, PBrowserParent* aNewTab, PRenderFrameParent* aRenderFrame, const uint32_t& aChromeFlags, const bool& aCalledFromJS, const bool& aPositionSpecified, const bool& aSizeSpecified, const OptionalURIParams& aURIToLoad, const nsCString& aFeatures, const nsCString& aBaseURI, const float& aFullZoom, const IPC::Principal& aTriggeringPrincipal, const uint32_t& aReferrerPolicy, CreateWindowResolver&& aResolve) { nsresult rv = NS_OK; CreatedWindowInfo cwi; // We always expect to open a new window here. If we don't, it's an error. cwi.windowOpened() = true; cwi.layersId() = LayersId{0}; cwi.maxTouchPoints() = 0; // Make sure to resolve the resolver when this function exits, even if we // failed to generate a valid response. auto resolveOnExit = MakeScopeExit([&] { // Copy over the nsresult, and then resolve. cwi.rv() = rv; aResolve(cwi); }); TabParent* newTab = TabParent::GetFrom(aNewTab); MOZ_ASSERT(newTab); auto destroyNewTabOnError = MakeScopeExit([&] { // We always expect to open a new window here. If we don't, it's an error. if (!cwi.windowOpened() || NS_FAILED(rv)) { if (newTab) { newTab->Destroy(); } } }); // Content has requested that we open this new content window, so // we must have an opener. newTab->SetHasContentOpener(true); TabParent::AutoUseNewTab aunt(newTab, &cwi.urlToLoad()); const uint64_t nextTabParentId = ++sNextTabParentId; sNextTabParents.Put(nextTabParentId, newTab); const nsCOMPtr uriToLoad = DeserializeURI(aURIToLoad); nsCOMPtr newRemoteTab; mozilla::ipc::IPCResult ipcResult = CommonCreateWindow(aThisTab, /* aSetOpener = */ true, aChromeFlags, aCalledFromJS, aPositionSpecified, aSizeSpecified, uriToLoad, aFeatures, aBaseURI, aFullZoom, nextTabParentId, VoidString(), rv, newRemoteTab, &cwi.windowOpened(), aTriggeringPrincipal, aReferrerPolicy, /* aLoadUri = */ false); if (!ipcResult) { return ipcResult; } if (NS_WARN_IF(NS_FAILED(rv)) || !newRemoteTab) { return IPC_OK(); } if (sNextTabParents.GetAndRemove(nextTabParentId).valueOr(nullptr)) { cwi.windowOpened() = false; } MOZ_ASSERT(TabParent::GetFrom(newRemoteTab) == newTab); newTab->SwapFrameScriptsFrom(cwi.frameScripts()); RenderFrameParent* rfp = static_cast(aRenderFrame); if (!newTab->SetRenderFrame(rfp) || !newTab->GetRenderFrameInfo(&cwi.textureFactoryIdentifier(), &cwi.layersId())) { rv = NS_ERROR_FAILURE; } cwi.compositorOptions() = rfp->GetCompositorOptions(); nsCOMPtr widget = newTab->GetWidget(); if (widget) { cwi.maxTouchPoints() = widget->GetMaxTouchPoints(); cwi.dimensions() = newTab->GetDimensionInfo(); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvCreateWindowInDifferentProcess( PBrowserParent* aThisTab, const uint32_t& aChromeFlags, const bool& aCalledFromJS, const bool& aPositionSpecified, const bool& aSizeSpecified, const OptionalURIParams& aURIToLoad, const nsCString& aFeatures, const nsCString& aBaseURI, const float& aFullZoom, const nsString& aName, const IPC::Principal& aTriggeringPrincipal, const uint32_t& aReferrerPolicy) { nsCOMPtr newRemoteTab; bool windowIsNew; nsCOMPtr uriToLoad = DeserializeURI(aURIToLoad); nsresult rv; mozilla::ipc::IPCResult ipcResult = CommonCreateWindow(aThisTab, /* aSetOpener = */ false, aChromeFlags, aCalledFromJS, aPositionSpecified, aSizeSpecified, uriToLoad, aFeatures, aBaseURI, aFullZoom, /* aNextTabParentId = */ 0, aName, rv, newRemoteTab, &windowIsNew, aTriggeringPrincipal, aReferrerPolicy, /* aLoadUri = */ true); if (!ipcResult) { return ipcResult; } if (NS_FAILED(rv)) { NS_WARNING("Call to CommonCreateWindow failed."); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvShutdownProfile(const nsCString& aProfile) { #ifdef MOZ_GECKO_PROFILER nsCOMPtr profiler(do_GetService("@mozilla.org/tools/profiler;1")); profiler->ReceiveShutdownProfile(aProfile); #endif return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvGetGraphicsDeviceInitData(ContentDeviceData* aOut) { gfxPlatform::GetPlatform()->BuildContentDeviceData(aOut); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvGraphicsError(const nsCString& aError) { gfx::LogForwarder* lf = gfx::Factory::GetLogForwarder(); if (lf) { std::stringstream message; message << "CP+" << aError.get(); lf->UpdateStringsVector(message.str()); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvBeginDriverCrashGuard(const uint32_t& aGuardType, bool* aOutCrashed) { // Only one driver crash guard should be active at a time, per-process. MOZ_ASSERT(!mDriverCrashGuard); UniquePtr guard; switch (gfx::CrashGuardType(aGuardType)) { case gfx::CrashGuardType::D3D11Layers: guard = MakeUnique(this); break; case gfx::CrashGuardType::D3D9Video: guard = MakeUnique(this); break; case gfx::CrashGuardType::GLContext: guard = MakeUnique(this); break; case gfx::CrashGuardType::D3D11Video: guard = MakeUnique(this); break; default: MOZ_ASSERT_UNREACHABLE("unknown crash guard type"); return IPC_FAIL_NO_REASON(this); } if (guard->Crashed()) { *aOutCrashed = true; return IPC_OK(); } *aOutCrashed = false; mDriverCrashGuard = Move(guard); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvEndDriverCrashGuard(const uint32_t& aGuardType) { mDriverCrashGuard = nullptr; return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvGetAndroidSystemInfo(AndroidSystemInfo* aInfo) { #ifdef MOZ_WIDGET_ANDROID nsSystemInfo::GetAndroidSystemInfo(aInfo); return IPC_OK(); #else MOZ_CRASH("wrong platform!"); return IPC_FAIL_NO_REASON(this); #endif } mozilla::ipc::IPCResult ContentParent::RecvNotifyBenchmarkResult(const nsString& aCodecName, const uint32_t& aDecodeFPS) { if (aCodecName.EqualsLiteral("VP9")) { Preferences::SetUint(VP9Benchmark::sBenchmarkFpsPref, aDecodeFPS); Preferences::SetUint(VP9Benchmark::sBenchmarkFpsVersionCheck, VP9Benchmark::sBenchmarkVersionID); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvNotifyPushObservers(const nsCString& aScope, const IPC::Principal& aPrincipal, const nsString& aMessageId) { PushMessageDispatcher dispatcher(aScope, aPrincipal, aMessageId, Nothing()); Unused << NS_WARN_IF(NS_FAILED(dispatcher.NotifyObservers())); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvNotifyPushObserversWithData(const nsCString& aScope, const IPC::Principal& aPrincipal, const nsString& aMessageId, InfallibleTArray&& aData) { PushMessageDispatcher dispatcher(aScope, aPrincipal, aMessageId, Some(aData)); Unused << NS_WARN_IF(NS_FAILED(dispatcher.NotifyObservers())); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvNotifyPushSubscriptionChangeObservers(const nsCString& aScope, const IPC::Principal& aPrincipal) { PushSubscriptionChangeDispatcher dispatcher(aScope, aPrincipal); Unused << NS_WARN_IF(NS_FAILED(dispatcher.NotifyObservers())); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvNotifyPushSubscriptionModifiedObservers(const nsCString& aScope, const IPC::Principal& aPrincipal) { PushSubscriptionModifiedDispatcher dispatcher(aScope, aPrincipal); Unused << NS_WARN_IF(NS_FAILED(dispatcher.NotifyObservers())); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvNotifyLowMemory() { MarkAsTroubled(); Telemetry::ScalarAdd(Telemetry::ScalarID::DOM_CONTENTPROCESS_TROUBLED_DUE_TO_MEMORY, 1); nsThread::SaveMemoryReportNearOOM(nsThread::ShouldSaveMemoryReport::kForceReport); return IPC_OK(); } /* static */ void ContentParent::BroadcastBlobURLRegistration(const nsACString& aURI, BlobImpl* aBlobImpl, nsIPrincipal* aPrincipal, ContentParent* aIgnoreThisCP) { nsCString uri(aURI); IPC::Principal principal(aPrincipal); for (auto* cp : AllProcesses(eLive)) { if (cp != aIgnoreThisCP) { IPCBlob ipcBlob; nsresult rv = IPCBlobUtils::Serialize(aBlobImpl, cp, ipcBlob); if (NS_WARN_IF(NS_FAILED(rv))) { break; } Unused << cp->SendBlobURLRegistration(uri, ipcBlob, principal); } } } /* static */ void ContentParent::BroadcastBlobURLUnregistration(const nsACString& aURI, ContentParent* aIgnoreThisCP) { nsCString uri(aURI); for (auto* cp : AllProcesses(eLive)) { if (cp != aIgnoreThisCP) { Unused << cp->SendBlobURLUnregistration(uri); } } } mozilla::ipc::IPCResult ContentParent::RecvStoreAndBroadcastBlobURLRegistration(const nsCString& aURI, const IPCBlob& aBlob, const Principal& aPrincipal) { RefPtr blobImpl = IPCBlobUtils::Deserialize(aBlob); if (NS_WARN_IF(!blobImpl)) { return IPC_FAIL_NO_REASON(this); } if (NS_SUCCEEDED(nsHostObjectProtocolHandler::AddDataEntry(aURI, aPrincipal, blobImpl))) { BroadcastBlobURLRegistration(aURI, blobImpl, aPrincipal, this); // We want to store this blobURL, so we can unregister it if the child // crashes. mBlobURLs.AppendElement(aURI); } BroadcastBlobURLRegistration(aURI, blobImpl, aPrincipal, this); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvUnstoreAndBroadcastBlobURLUnregistration(const nsCString& aURI) { nsHostObjectProtocolHandler::RemoveDataEntry(aURI, false /* Don't broadcast */); BroadcastBlobURLUnregistration(aURI, this); mBlobURLs.RemoveElement(aURI); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvGetA11yContentId(uint32_t* aContentId) { #if defined(XP_WIN32) && defined(ACCESSIBILITY) *aContentId = a11y::AccessibleWrap::GetContentProcessIdFor(ChildID()); MOZ_ASSERT(*aContentId); return IPC_OK(); #else return IPC_FAIL_NO_REASON(this); #endif } mozilla::ipc::IPCResult ContentParent::RecvA11yHandlerControl(const uint32_t& aPid, const IHandlerControlHolder& aHandlerControl) { #if defined(XP_WIN32) && defined(ACCESSIBILITY) MOZ_ASSERT(!aHandlerControl.IsNull()); RefPtr proxy(aHandlerControl.Get()); a11y::AccessibleWrap::SetHandlerControl(aPid, Move(proxy)); return IPC_OK(); #else return IPC_FAIL_NO_REASON(this); #endif } } // namespace dom } // namespace mozilla NS_IMPL_ISUPPORTS(ParentIdleListener, nsIObserver) NS_IMETHODIMP ParentIdleListener::Observe(nsISupports*, const char* aTopic, const char16_t* aData) { mozilla::Unused << mParent->SendNotifyIdleObserver(mObserver, nsDependentCString(aTopic), nsDependentString(aData)); return NS_OK; } bool ContentParent::HandleWindowsMessages(const Message& aMsg) const { MOZ_ASSERT(aMsg.is_sync()); // a11y messages can be triggered by windows messages, which means if we // allow handling windows messages while we wait for the response to a sync // a11y message we can reenter the ipc message sending code. if (a11y::PDocAccessible::PDocAccessibleStart < aMsg.type() && a11y::PDocAccessible::PDocAccessibleEnd > aMsg.type()) { return false; } return true; } mozilla::ipc::IPCResult ContentParent::RecvGetFilesRequest(const nsID& aUUID, const nsString& aDirectoryPath, const bool& aRecursiveFlag) { MOZ_ASSERT(!mGetFilesPendingRequests.GetWeak(aUUID)); if (!mozilla::Preferences::GetBool("dom.filesystem.pathcheck.disabled", false)) { RefPtr fss = FileSystemSecurity::Get(); if (NS_WARN_IF(!fss || !fss->ContentProcessHasAccessTo(ChildID(), aDirectoryPath))) { return IPC_FAIL_NO_REASON(this); } } ErrorResult rv; RefPtr helper = GetFilesHelperParent::Create(aUUID, aDirectoryPath, aRecursiveFlag, this, rv); if (NS_WARN_IF(rv.Failed())) { if (!SendGetFilesResponse(aUUID, GetFilesResponseFailure(rv.StealNSResult()))) { return IPC_FAIL_NO_REASON(this); } return IPC_OK(); } mGetFilesPendingRequests.Put(aUUID, helper); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvDeleteGetFilesRequest(const nsID& aUUID) { mGetFilesPendingRequests.Remove(aUUID); return IPC_OK(); } void ContentParent::SendGetFilesResponseAndForget(const nsID& aUUID, const GetFilesResponseResult& aResult) { if (mGetFilesPendingRequests.Remove(aUUID)) { Unused << SendGetFilesResponse(aUUID, aResult); } } void ContentParent::ForceTabPaint(TabParent* aTabParent, uint64_t aLayerObserverEpoch) { if (!mHangMonitorActor) { return; } ProcessHangMonitor::ForcePaint(mHangMonitorActor, aTabParent, aLayerObserverEpoch); } void ContentParent::UpdateCookieStatus(nsIChannel *aChannel) { PNeckoParent *neckoParent = LoneManagedOrNullAsserts(ManagedPNeckoParent()); PCookieServiceParent *csParent = LoneManagedOrNullAsserts(neckoParent->ManagedPCookieServiceParent()); if (csParent) { auto *cs = static_cast(csParent); cs->TrackCookieLoad(aChannel); } } nsresult ContentParent::AboutToLoadHttpFtpWyciwygDocumentForChild(nsIChannel* aChannel) { MOZ_ASSERT(aChannel); nsresult rv; bool isDocument = aChannel->IsDocument(); if (!isDocument) { // We may be looking at a nsIHttpChannel which has isMainDocumentChannel set // (e.g. the internal http channel for a view-source: load.). nsCOMPtr httpChannel = do_QueryInterface(aChannel); if (httpChannel) { rv = httpChannel->GetIsMainDocumentChannel(&isDocument); NS_ENSURE_SUCCESS(rv, rv); } } if (!isDocument) { return NS_OK; } // Get the principal for the channel result, so that we can get the permission // key for the document which will be created from this response. nsIScriptSecurityManager* ssm = nsContentUtils::GetSecurityManager(); if (NS_WARN_IF(!ssm)) { return NS_ERROR_FAILURE; } nsCOMPtr principal; rv = ssm->GetChannelResultPrincipal(aChannel, getter_AddRefs(principal)); NS_ENSURE_SUCCESS(rv, rv); rv = TransmitPermissionsForPrincipal(principal); NS_ENSURE_SUCCESS(rv, rv); nsLoadFlags newLoadFlags; aChannel->GetLoadFlags(&newLoadFlags); if (newLoadFlags & nsIRequest::LOAD_DOCUMENT_NEEDS_COOKIE) { UpdateCookieStatus(aChannel); } return NS_OK; } nsresult ContentParent::TransmitPermissionsForPrincipal(nsIPrincipal* aPrincipal) { // Create the key, and send it down to the content process. nsTArray keys = nsPermissionManager::GetAllKeysForPrincipal(aPrincipal); MOZ_ASSERT(keys.Length() >= 1); for (auto& key : keys) { EnsurePermissionsByKey(key); } return NS_OK; } void ContentParent::EnsurePermissionsByKey(const nsCString& aKey) { // NOTE: Make sure to initialize the permission manager before updating the // mActivePermissionKeys list. If the permission manager is being initialized // by this call to GetPermissionManager, and we've added the key to // mActivePermissionKeys, then the permission manager will send down a // SendAddPermission before receiving the SendSetPermissionsWithKey message. nsCOMPtr permManager = services::GetPermissionManager(); if (mActivePermissionKeys.Contains(aKey)) { return; } mActivePermissionKeys.PutEntry(aKey); nsTArray perms; nsresult rv = permManager->GetPermissionsWithKey(aKey, perms); if (NS_WARN_IF(NS_FAILED(rv))) { return; } Unused << SendSetPermissionsWithKey(aKey, perms); } bool ContentParent::NeedsPermissionsUpdate(const nsACString& aPermissionKey) const { return mActivePermissionKeys.Contains(aPermissionKey); } mozilla::ipc::IPCResult ContentParent::RecvAccumulateChildHistograms( InfallibleTArray&& aAccumulations) { TelemetryIPC::AccumulateChildHistograms(GetTelemetryProcessID(mRemoteType), aAccumulations); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvAccumulateChildKeyedHistograms( InfallibleTArray&& aAccumulations) { TelemetryIPC::AccumulateChildKeyedHistograms(GetTelemetryProcessID(mRemoteType), aAccumulations); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvUpdateChildScalars( InfallibleTArray&& aScalarActions) { TelemetryIPC::UpdateChildScalars(GetTelemetryProcessID(mRemoteType), aScalarActions); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvUpdateChildKeyedScalars( InfallibleTArray&& aScalarActions) { TelemetryIPC::UpdateChildKeyedScalars(GetTelemetryProcessID(mRemoteType), aScalarActions); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvRecordChildEvents(nsTArray&& aEvents) { TelemetryIPC::RecordChildEvents(GetTelemetryProcessID(mRemoteType), aEvents); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvRecordDiscardedData( const mozilla::Telemetry::DiscardedData& aDiscardedData) { TelemetryIPC::RecordDiscardedData(GetTelemetryProcessID(mRemoteType), aDiscardedData); return IPC_OK(); } ////////////////////////////////////////////////////////////////// // PURLClassifierParent PURLClassifierParent* ContentParent::AllocPURLClassifierParent(const Principal& aPrincipal, const bool& aUseTrackingProtection, bool* aSuccess) { MOZ_ASSERT(NS_IsMainThread()); *aSuccess = true; RefPtr actor = new URLClassifierParent(); return actor.forget().take(); } mozilla::ipc::IPCResult ContentParent::RecvPURLClassifierConstructor(PURLClassifierParent* aActor, const Principal& aPrincipal, const bool& aUseTrackingProtection, bool* aSuccess) { MOZ_ASSERT(NS_IsMainThread()); MOZ_ASSERT(aActor); *aSuccess = false; auto* actor = static_cast(aActor); nsCOMPtr principal(aPrincipal); if (!principal) { actor->ClassificationFailed(); return IPC_OK(); } return actor->StartClassify(principal, aUseTrackingProtection, aSuccess); } bool ContentParent::DeallocPURLClassifierParent(PURLClassifierParent* aActor) { MOZ_ASSERT(NS_IsMainThread()); MOZ_ASSERT(aActor); RefPtr actor = dont_AddRef(static_cast(aActor)); return true; } ////////////////////////////////////////////////////////////////// // PURLClassifierLocalParent PURLClassifierLocalParent* ContentParent::AllocPURLClassifierLocalParent(const URIParams& aURI, const nsCString& aTables) { MOZ_ASSERT(NS_IsMainThread()); RefPtr actor = new URLClassifierLocalParent(); return actor.forget().take(); } mozilla::ipc::IPCResult ContentParent::RecvPURLClassifierLocalConstructor(PURLClassifierLocalParent* aActor, const URIParams& aURI, const nsCString& aTables) { MOZ_ASSERT(NS_IsMainThread()); MOZ_ASSERT(aActor); nsCOMPtr uri = DeserializeURI(aURI); if (!uri) { NS_WARNING("Failed to DeserializeURI"); return IPC_FAIL_NO_REASON(this); } auto* actor = static_cast(aActor); return actor->StartClassify(uri, aTables); } bool ContentParent::DeallocPURLClassifierLocalParent(PURLClassifierLocalParent* aActor) { MOZ_ASSERT(NS_IsMainThread()); MOZ_ASSERT(aActor); RefPtr actor = dont_AddRef(static_cast(aActor)); return true; } PLoginReputationParent* ContentParent::AllocPLoginReputationParent(const URIParams& aURI) { MOZ_ASSERT(NS_IsMainThread()); RefPtr actor = new LoginReputationParent(); return actor.forget().take(); } mozilla::ipc::IPCResult ContentParent::RecvPLoginReputationConstructor(PLoginReputationParent* aActor, const URIParams& aURI) { MOZ_ASSERT(NS_IsMainThread()); MOZ_ASSERT(aActor); nsCOMPtr uri = DeserializeURI(aURI); if (!uri) { return IPC_FAIL_NO_REASON(this); } auto* actor = static_cast(aActor); return actor->QueryReputation(uri); } bool ContentParent::DeallocPLoginReputationParent(PLoginReputationParent* aActor) { MOZ_ASSERT(NS_IsMainThread()); MOZ_ASSERT(aActor); RefPtr actor = dont_AddRef(static_cast(aActor)); return true; } mozilla::ipc::IPCResult ContentParent::RecvClassifyLocal(const URIParams& aURI, const nsCString& aTables, nsresult *aRv, nsTArray* aResults) { MOZ_ASSERT(aResults); nsCOMPtr uri = DeserializeURI(aURI); if (!uri) { return IPC_FAIL_NO_REASON(this); } nsCOMPtr uriClassifier = do_GetService(NS_URICLASSIFIERSERVICE_CONTRACTID); if (!uriClassifier) { return IPC_FAIL_NO_REASON(this); } *aRv = uriClassifier->ClassifyLocalWithTables(uri, aTables, *aResults); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvFileCreationRequest(const nsID& aID, const nsString& aFullPath, const nsString& aType, const nsString& aName, const bool& aLastModifiedPassed, const int64_t& aLastModified, const bool& aExistenceCheck, const bool& aIsFromNsIFile) { // We allow the creation of File via this IPC call only for the 'file' process // or for testing. if (!mRemoteType.EqualsLiteral(FILE_REMOTE_TYPE) && !Preferences::GetBool("dom.file.createInChild", false)) { return IPC_FAIL_NO_REASON(this); } RefPtr blobImpl; nsresult rv = FileCreatorHelper::CreateBlobImplForIPC(aFullPath, aType, aName, aLastModifiedPassed, aLastModified, aExistenceCheck, aIsFromNsIFile, getter_AddRefs(blobImpl)); if (NS_WARN_IF(NS_FAILED(rv))) { if (!SendFileCreationResponse(aID, FileCreationErrorResult(rv))) { return IPC_FAIL_NO_REASON(this); } return IPC_OK(); } MOZ_ASSERT(blobImpl); IPCBlob ipcBlob; rv = IPCBlobUtils::Serialize(blobImpl, this, ipcBlob); if (NS_WARN_IF(NS_FAILED(rv))) { if (!SendFileCreationResponse(aID, FileCreationErrorResult(rv))) { return IPC_FAIL_NO_REASON(this); } return IPC_OK(); } if (!SendFileCreationResponse(aID, FileCreationSuccessResult(ipcBlob))) { return IPC_FAIL_NO_REASON(this); } return IPC_OK(); } bool ContentParent::CanCommunicateWith(ContentParentId aOtherProcess) { // Normally a process can only communicate with its parent, but a JS plugin process can // communicate with any process. ContentProcessManager *cpm = ContentProcessManager::GetSingleton(); ContentParentId parentId; if (!cpm->GetParentProcessId(ChildID(), &parentId)) { return false; } if (IsForJSPlugin()) { return parentId == ContentParentId(0); } return parentId == aOtherProcess; } mozilla::ipc::IPCResult ContentParent::RecvMaybeReloadPlugins() { RefPtr pluginHost = nsPluginHost::GetInst(); pluginHost->ReloadPlugins(); return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvDeviceReset() { GPUProcessManager* pm = GPUProcessManager::Get(); if (pm) { pm->SimulateDeviceReset(); } return IPC_OK(); } mozilla::ipc::IPCResult ContentParent::RecvBHRThreadHang(const HangDetails& aDetails) { nsCOMPtr obs = mozilla::services::GetObserverService(); if (obs) { // Copy the HangDetails recieved over the network into a nsIHangDetails, and // then fire our own observer notification. // XXX: We should be able to avoid this potentially expensive copy here by // moving our deserialized argument. nsCOMPtr hangDetails = new nsHangDetails(HangDetails(aDetails)); obs->NotifyObservers(hangDetails, "bhr-thread-hang", nullptr); } return IPC_OK(); }