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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=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
#include "mozilla/AppShutdown.h"
#include "mozilla/DebugOnly.h"
#include "base/basictypes.h"
#include "ContentParent.h"
#include "mozilla/ipc/ProcessUtils.h"
#include "mozilla/CmdLineAndEnvUtils.h"
#include "BrowserParent.h"
#include "chrome/common/process_watcher.h"
#include "mozilla/Result.h"
#include "mozilla/Services.h"
#include "mozilla/XREAppData.h"
#include "nsComponentManagerUtils.h"
#include "nsIBrowserDOMWindow.h"
#include "nsIPrivateAttributionService.h"
#include "GMPServiceParent.h"
#include "HandlerServiceParent.h"
#include "IHistory.h"
#include <map>
#include <utility>
#include "ContentProcessManager.h"
#include "GeckoProfiler.h"
#include "Geolocation.h"
#include "GfxInfoBase.h"
#include "MMPrinter.h"
#include "PreallocatedProcessManager.h"
#include "ProcessPriorityManager.h"
#include "ProfilerParent.h"
#include "SandboxHal.h"
#include "SourceSurfaceRawData.h"
#include "mozilla/ipc/URIUtils.h"
#include "gfxPlatform.h"
#include "gfxPlatformFontList.h"
#include "nsDNSService2.h"
#include "nsPIDNSService.h"
#include "mozilla/AntiTrackingUtils.h"
#include "mozilla/AppShutdown.h"
#include "mozilla/AutoRestore.h"
#include "mozilla/ClipboardContentAnalysisParent.h"
#include "mozilla/BasePrincipal.h"
#include "mozilla/Casting.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/ClipboardReadRequestParent.h"
#include "mozilla/ClipboardWriteRequestParent.h"
#include "mozilla/ContentBlockingUserInteraction.h"
#include "mozilla/FOGIPC.h"
#include "mozilla/GlobalStyleSheetCache.h"
#include "mozilla/GeckoArgs.h"
#include "mozilla/HangDetails.h"
#include "mozilla/LookAndFeel.h"
#include "mozilla/Maybe.h"
#include "mozilla/NullPrincipal.h"
#include "mozilla/Preferences.h"
#include "mozilla/PresShell.h"
#include "mozilla/ProcessHangMonitor.h"
#include "mozilla/ProcessHangMonitorIPC.h"
#include "mozilla/ProfilerLabels.h"
#include "mozilla/ProfilerMarkers.h"
#include "mozilla/RecursiveMutex.h"
#include "mozilla/RDDProcessManager.h"
#include "mozilla/ScopeExit.h"
#include "mozilla/ScriptPreloader.h"
#include "mozilla/Components.h"
#include "mozilla/Sprintf.h"
#include "mozilla/StaticPrefs_dom.h"
#include "mozilla/StaticPrefs_fission.h"
#include "mozilla/StaticPrefs_media.h"
#include "mozilla/StaticPrefs_network.h"
#include "mozilla/StaticPrefs_threads.h"
#include "mozilla/StaticPrefs_widget.h"
#include "mozilla/StorageAccessAPIHelper.h"
#include "mozilla/StyleSheet.h"
#include "mozilla/StyleSheetInlines.h"
#include "mozilla/TaskController.h"
#include "mozilla/glean/DomMetrics.h"
#include "mozilla/glean/IpcMetrics.h"
#include "mozilla/Telemetry.h"
#include "mozilla/TelemetryIPC.h"
#include "mozilla/ThreadSafety.h"
#include "mozilla/Unused.h"
#include "mozilla/WebBrowserPersistDocumentParent.h"
#include "mozilla/devtools/HeapSnapshotTempFileHelperParent.h"
#include "mozilla/dom/BlobURLProtocolHandler.h"
#include "mozilla/dom/BrowserHost.h"
#include "mozilla/dom/BrowsingContext.h"
#include "mozilla/dom/BrowsingContextGroup.h"
#include "mozilla/dom/CancelContentJSOptionsBinding.h"
#include "mozilla/dom/CanonicalBrowsingContext.h"
#include "mozilla/dom/ClientManager.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/DataTransfer.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/ExternalHelperAppParent.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/FileSystemSecurity.h"
#include "mozilla/dom/GeolocationBinding.h"
#include "mozilla/dom/GeolocationPositionError.h"
#include "mozilla/dom/GeolocationSystem.h"
#include "mozilla/dom/GetFilesHelper.h"
#include "mozilla/dom/IPCBlobUtils.h"
#include "mozilla/dom/JSActorService.h"
#include "mozilla/dom/JSProcessActorBinding.h"
#include "mozilla/dom/LocalStorageCommon.h"
#include "mozilla/dom/MediaController.h"
#include "mozilla/dom/MemoryReportRequest.h"
#include "mozilla/dom/MediaStatusManager.h"
#include "mozilla/dom/notification/NotificationUtils.h"
#include "mozilla/dom/PContentPermissionRequestParent.h"
#include "mozilla/dom/PCycleCollectWithLogsParent.h"
#include "mozilla/dom/ParentProcessMessageManager.h"
#include "mozilla/dom/Permissions.h"
#include "mozilla/dom/ProcessMessageManager.h"
#include "mozilla/dom/PushNotifier.h"
#include "mozilla/dom/RemoteWorkerDebuggerManagerParent.h"
#include "mozilla/dom/RemoteWorkerServiceParent.h"
#include "mozilla/dom/ServiceWorkerManager.h"
#include "mozilla/dom/ServiceWorkerRegistrar.h"
#include "mozilla/dom/ServiceWorkerUtils.h"
#include "mozilla/dom/SessionHistoryEntry.h"
#include "mozilla/dom/SessionStorageManager.h"
#include "mozilla/dom/StorageIPC.h"
#include "mozilla/dom/UserActivation.h"
#include "mozilla/dom/URLClassifierParent.h"
#include "mozilla/dom/WindowGlobalParent.h"
#include "mozilla/dom/ipc/SharedMap.h"
#include "mozilla/dom/ipc/StructuredCloneData.h"
#include "mozilla/dom/nsMixedContentBlocker.h"
#include "mozilla/dom/power/PowerManagerService.h"
#include "mozilla/dom/quota/QuotaManagerService.h"
#include "mozilla/extensions/ExtensionsParent.h"
#include "mozilla/extensions/StreamFilterParent.h"
#include "mozilla/gfx/GPUProcessManager.h"
#include "mozilla/gfx/gfxVars.h"
#include "mozilla/glean/GleanPings.h"
#include "mozilla/hal_sandbox/PHalParent.h"
#include "mozilla/intl/L10nRegistry.h"
#include "mozilla/intl/LocaleService.h"
#include "mozilla/ipc/BackgroundChild.h"
#include "mozilla/ipc/BackgroundParent.h"
#include "mozilla/ipc/ByteBuf.h"
#include "mozilla/ipc/CrashReporterHost.h"
#include "mozilla/ipc/Endpoint.h"
#include "mozilla/ipc/FileDescriptorUtils.h"
#include "mozilla/ipc/IPCStreamUtils.h"
#include "mozilla/ipc/SharedMemoryHandle.h"
#include "mozilla/ipc/TestShellParent.h"
#include "mozilla/layers/CompositorThread.h"
#include "mozilla/layers/ImageBridgeParent.h"
#include "mozilla/layers/LayerTreeOwnerTracker.h"
#include "mozilla/layers/PAPZParent.h"
#include "mozilla/loader/ScriptCacheActors.h"
#include "mozilla/media/MediaParent.h"
#include "mozilla/mozSpellChecker.h"
#include "mozilla/net/CookieServiceParent.h"
#include "mozilla/net/NeckoMessageUtils.h"
#include "mozilla/net/NeckoParent.h"
#include "mozilla/net/PCookieServiceParent.h"
#include "mozilla/net/CookieKey.h"
#include "mozilla/net/UrlClassifierFeatureFactory.h"
#include "mozilla/net/TRRService.h"
#include "mozilla/TelemetryComms.h"
#include "mozilla/RemoteLazyInputStreamParent.h"
#include "mozilla/widget/RemoteLookAndFeel.h"
#include "mozilla/widget/ScreenManager.h"
#include "mozilla/widget/TextRecognition.h"
#include "nsAnonymousTemporaryFile.h"
#include "nsAppRunner.h"
#include "nsCExternalHandlerService.h"
#include "nsCOMPtr.h"
#include "nsChromeRegistryChrome.h"
#include "nsConsoleMessage.h"
#include "nsConsoleService.h"
#include "nsContentPermissionHelper.h"
#include "nsContentUtils.h"
#include "nsCRT.h"
#include "nsDebugImpl.h"
#include "nsDirectoryServiceDefs.h"
#include "nsDocShell.h"
#include "nsEmbedCID.h"
#include "nsFocusManager.h"
#include "nsFrameLoader.h"
#include "nsFrameMessageManager.h"
#include "nsGlobalWindowOuter.h"
#include "nsHashPropertyBag.h"
#include "nsHyphenationManager.h"
#include "nsIAppShell.h"
#include "nsIAppWindow.h"
#include "nsIAsyncInputStream.h"
#include "nsIBidiKeyboard.h"
#include "nsICaptivePortalService.h"
#include "nsICertOverrideService.h"
#include "nsIClipboard.h"
#include "nsIContentAnalysis.h"
#include "nsIContentSecurityPolicy.h"
#include "nsICookie.h"
#include "nsICrashService.h"
#include "nsICycleCollectorListener.h"
#include "nsIDocShell.h"
#include "nsIDocShellTreeOwner.h"
#include "nsIDragService.h"
#include "nsIExternalProtocolService.h"
#include "nsIGfxInfo.h"
#include "nsIUserIdleService.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsILocalStorageManager.h"
#include "nsIMemoryInfoDumper.h"
#include "nsIMemoryReporter.h"
#include "nsINetworkLinkService.h"
#include "nsIObserverService.h"
#include "nsIParentChannel.h"
#include "nsIScriptError.h"
#include "nsIScriptSecurityManager.h"
#include "nsIServiceWorkerManager.h"
#include "nsISiteSecurityService.h"
#include "nsIStringBundle.h"
#include "nsITimer.h"
#include "nsIURL.h"
#include "nsIWebBrowserChrome.h"
#include "nsIX509Cert.h"
#include "nsIXULRuntime.h"
#include "nsICookieNotification.h"
#if defined(MOZ_WIDGET_GTK) || defined(XP_WIN)
# include "nsIconChannel.h"
#endif
#include "nsMemoryInfoDumper.h"
#include "nsMemoryReporterManager.h"
#include "nsOpenURIInFrameParams.h"
#include "nsPIWindowWatcher.h"
#include "nsQueryObject.h"
#include "nsReadableUtils.h"
#include "nsSHistory.h"
#include "nsScriptError.h"
#include "nsServiceManagerUtils.h"
#include "nsStreamUtils.h"
#include "nsStyleSheetService.h"
#include "nsThread.h"
#include "nsThreadUtils.h"
#include "nsWidgetsCID.h"
#include "nsWindowWatcher.h"
#include "prenv.h"
#include "prio.h"
#include "private/pprio.h"
#include "xpcpublic.h"
#include "nsOpenWindowInfo.h"
#include "nsFrameLoaderOwner.h"
#ifdef MOZ_WEBRTC
# include "jsapi/WebrtcGlobalParent.h"
#endif
#if defined(XP_MACOSX)
# include "nsMacUtilsImpl.h"
# include "mozilla/AvailableMemoryWatcher.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 "mozilla/PermissionManager.h"
#ifdef MOZ_WIDGET_ANDROID
# include "AndroidBridge.h"
# include "mozilla/java/GeckoProcessManagerWrappers.h"
# include "mozilla/java/GeckoProcessTypeWrappers.h"
#endif
#ifdef MOZ_WIDGET_GTK
# include <gdk/gdk.h>
# include "mozilla/WidgetUtilsGtk.h"
#endif
#include "mozilla/RemoteSpellCheckEngineParent.h"
#include "Crypto.h"
#ifdef MOZ_WEBSPEECH
# include "mozilla/dom/SpeechSynthesisParent.h"
#endif
#if defined(MOZ_SANDBOX)
# include "mozilla/SandboxSettings.h"
# if defined(XP_LINUX)
# include "mozilla/SandboxInfo.h"
# include "mozilla/SandboxBroker.h"
# include "mozilla/SandboxBrokerPolicyFactory.h"
# endif
# if defined(XP_MACOSX)
# include "mozilla/Sandbox.h"
# endif
#endif
#ifdef XP_WIN
# include "mozilla/widget/AudioSession.h"
# include "mozilla/WinDllServices.h"
#endif
#ifdef MOZ_CODE_COVERAGE
# include "mozilla/CodeCoverageHandler.h"
#endif
#ifdef FUZZING_SNAPSHOT
# include "mozilla/fuzzing/IPCFuzzController.h"
#endif
#ifdef ENABLE_WEBDRIVER
# include "nsIMarionette.h"
# include "nsIRemoteAgent.h"
#endif
#include "mozilla/RemoteDecodeUtils.h"
#include "nsIToolkitProfileService.h"
#include "nsIToolkitProfile.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::psm;
using namespace mozilla::widget;
using namespace mozilla::Telemetry;
using mozilla::loader::PScriptCacheParent;
using mozilla::Telemetry::ProcessID;
extern mozilla::LazyLogModule gFocusLog;
#define LOGFOCUS(args) MOZ_LOG(gFocusLog, mozilla::LogLevel::Debug, args)
extern mozilla::LazyLogModule sPDMLog;
#define LOGPDM(...) MOZ_LOG(sPDMLog, mozilla::LogLevel::Debug, (__VA_ARGS__))
namespace mozilla {
namespace CubebUtils {
extern FileDescriptor CreateAudioIPCConnection();
}
namespace dom {
LazyLogModule gProcessLog("Process");
MOZ_RUNINIT static std::map<RemoteDecodeIn, media::MediaCodecsSupported>
sCodecsSupported;
/* static */
uint32_t ContentParent::sMaxContentProcesses = 0;
/* static */
LogModule* ContentParent::GetLog() { return gProcessLog; }
/* static */
uint32_t ContentParent::sPageLoadEventCounter = 0;
#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:
MOZ_COUNTED_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<nsIFile> 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<nsICycleCollectorLogSink> mSink;
nsCOMPtr<nsIDumpGCAndCCLogsCallback> mCallback;
};
// A memory reporter for ContentParent objects themselves.
class ContentParentsMemoryReporter final : public nsIMemoryReporter {
~ContentParentsMemoryReporter() = default;
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIMEMORYREPORTER
};
NS_IMPL_ISUPPORTS(ContentParentsMemoryReporter, nsIMemoryReporter)
NS_IMETHODIMP
ContentParentsMemoryReporter::CollectReports(
nsIHandleReportCallback* aHandleReport, nsISupports* aData,
bool aAnonymize) {
AutoTArray<ContentParent*, 16> 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->IsClosed()) {
channelStr = "closed channel";
} else {
channelStr = "open channel";
}
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<nsIObserver*>(cp), refcnt);
constexpr auto 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."_ns;
aHandleReport->Callback(/* process */ ""_ns, path, KIND_OTHER, UNITS_COUNT,
numQueuedMessages, desc, aData);
}
return NS_OK;
}
// A hashtable (by type) of processes/ContentParents. This includes
// processes that are in the Preallocator cache (which would be type
// 'prealloc'), and recycled processes ('web' and in the future
// eTLD+1-locked) processes).
nsClassHashtable<nsCStringHashKey, nsTArray<ContentParent*>>*
ContentParent::sBrowserContentParents;
namespace {
uint64_t ComputeLoadedOriginHash(nsIPrincipal* aPrincipal) {
uint32_t originNoSuffix =
BasePrincipal::Cast(aPrincipal)->GetOriginNoSuffixHash();
uint32_t originSuffix =
BasePrincipal::Cast(aPrincipal)->GetOriginSuffixHash();
return ((uint64_t)originNoSuffix) << 32 | originSuffix;
}
ProcessID GetTelemetryProcessID(const nsACString& 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 == EXTENSION_REMOTE_TYPE ? ProcessID::Extension
: ProcessID::Content;
}
} // anonymous namespace
StaticAutoPtr<LinkedList<ContentParent>> ContentParent::sContentParents;
#if defined(XP_LINUX) && defined(MOZ_SANDBOX)
StaticAutoPtr<SandboxBrokerPolicyFactory>
ContentParent::sSandboxBrokerPolicyFactory;
#endif
#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
StaticAutoPtr<std::vector<std::string>> ContentParent::sMacSandboxParams;
#endif
// Set to true when the first content process gets created.
static bool sCreatedFirstContentProcess = false;
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
// True when we're running the process selection code, and do not expect to
// enter code paths where processes may die.
static bool sInProcessSelector = false;
#endif
static const char* sObserverTopics[] = {
NS_IPC_IOSERVICE_SET_OFFLINE_TOPIC,
NS_IPC_IOSERVICE_SET_CONNECTIVITY_TOPIC,
NS_IPC_CAPTIVE_PORTAL_SET_STATE,
"application-background",
"application-foreground",
"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",
NS_NETWORK_LINK_TYPE_TOPIC,
NS_NETWORK_TRR_MODE_CHANGED_TOPIC,
"network:socket-process-crashed",
DEFAULT_TIMEZONE_CHANGED_OBSERVER_TOPIC,
};
void ContentParent_NotifyUpdatedDictionaries() {
ContentParent::NotifyUpdatedDictionaries();
}
// PreallocateProcess is called by the PreallocatedProcessManager.
// ContentParent then takes this process back within GetNewOrUsedBrowserProcess.
/*static*/ UniqueContentParentKeepAlive ContentParent::MakePreallocProcess() {
RefPtr<ContentParent> process = new ContentParent(PREALLOC_REMOTE_TYPE);
if (NS_WARN_IF(!process->BeginSubprocessLaunch(PROCESS_PRIORITY_PREALLOC))) {
process->LaunchSubprocessReject();
return nullptr;
}
return process->AddKeepAlive(/* aBrowserId */ 0);
}
/*static*/
void ContentParent::StartUp() {
// child process
if (!XRE_IsParentProcess()) {
return;
}
// From this point on, NS_WARNING, NS_ASSERTION, etc. should print out the
// PID along with the warning.
nsDebugImpl::SetMultiprocessMode("Parent");
// Note: This reporter measures all ContentParents.
RegisterStrongMemoryReporter(new ContentParentsMemoryReporter());
BackgroundChild::Startup();
ClientManager::Startup();
Preferences::RegisterCallbackAndCall(&OnFissionBlocklistPrefChange,
kFissionEnforceBlockList);
Preferences::RegisterCallbackAndCall(&OnFissionBlocklistPrefChange,
kFissionOmitBlockListValues);
#if defined(XP_LINUX) && defined(MOZ_SANDBOX)
sSandboxBrokerPolicyFactory = new SandboxBrokerPolicyFactory();
#endif
#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
sMacSandboxParams = new std::vector<std::string>();
#endif
}
/*static*/
void ContentParent::ShutDown() {
// For the most, we rely on normal process shutdown and
// ClearOnShutdown() to clean up our state.
#if defined(XP_LINUX) && defined(MOZ_SANDBOX)
sSandboxBrokerPolicyFactory = nullptr;
#endif
#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
sMacSandboxParams = nullptr;
#endif
}
/*static*/
uint32_t ContentParent::GetPoolSize(const nsACString& aContentProcessType) {
if (!sBrowserContentParents) {
return 0;
}
nsTArray<ContentParent*>* parents =
sBrowserContentParents->Get(aContentProcessType);
return parents ? parents->Length() : 0;
}
/*static*/ nsTArray<ContentParent*>& ContentParent::GetOrCreatePool(
const nsACString& aContentProcessType) {
if (!sBrowserContentParents) {
sBrowserContentParents =
new nsClassHashtable<nsCStringHashKey, nsTArray<ContentParent*>>;
}
return *sBrowserContentParents->GetOrInsertNew(aContentProcessType);
}
nsDependentCSubstring RemoteTypePrefix(const nsACString& aContentProcessType) {
// The suffix after a `=` in a remoteType is dynamic, and used to control the
// process pool to use.
int32_t equalIdx = aContentProcessType.FindChar(L'=');
if (equalIdx == kNotFound) {
equalIdx = aContentProcessType.Length();
}
return StringHead(aContentProcessType, equalIdx);
}
bool IsWebRemoteType(const nsACString& aContentProcessType) {
// Note: matches webIsolated, web, and webCOOP+COEP types.
return StringBeginsWith(aContentProcessType, DEFAULT_REMOTE_TYPE);
}
bool IsWebCoopCoepRemoteType(const nsACString& aContentProcessType) {
return StringBeginsWith(aContentProcessType,
WITH_COOP_COEP_REMOTE_TYPE_PREFIX);
}
bool IsExtensionRemoteType(const nsACString& aContentProcessType) {
return aContentProcessType == EXTENSION_REMOTE_TYPE;
}
/*static*/
uint32_t ContentParent::GetMaxProcessCount(
const nsACString& aContentProcessType) {
// Max process count is based only on the prefix.
const nsDependentCSubstring processTypePrefix =
RemoteTypePrefix(aContentProcessType);
// Check for the default remote type of "web", as it uses different prefs.
if (processTypePrefix == DEFAULT_REMOTE_TYPE) {
return GetMaxWebProcessCount();
}
// Read the pref controling this remote type. `dom.ipc.processCount` is not
// used as a fallback, as it is intended to control the number of "web"
// content processes, checked in `mozilla::GetMaxWebProcessCount()`.
nsAutoCString processCountPref("dom.ipc.processCount.");
processCountPref.Append(processTypePrefix);
int32_t maxContentParents = Preferences::GetInt(processCountPref.get(), 1);
if (maxContentParents < 1) {
maxContentParents = 1;
}
return static_cast<uint32_t>(maxContentParents);
}
/*static*/
bool ContentParent::IsMaxProcessCountReached(
const nsACString& aContentProcessType) {
return GetPoolSize(aContentProcessType) >=
GetMaxProcessCount(aContentProcessType);
}
// Really more ReleaseUnneededProcesses()
/*static*/
void ContentParent::ReleaseCachedProcesses() {
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("ReleaseCachedProcesses:"));
if (!sBrowserContentParents) {
return;
}
#ifdef DEBUG
for (const auto& cps : *sBrowserContentParents) {
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("%s: %zu processes", PromiseFlatCString(cps.GetKey()).get(),
cps.GetData()->Length()));
}
#endif
// First let's collect all processes and keep a grip.
AutoTArray<RefPtr<ContentParent>, 32> fixArray;
for (const auto& contentParents : sBrowserContentParents->Values()) {
for (auto* cp : *contentParents) {
fixArray.AppendElement(cp);
}
}
for (const auto& cp : fixArray) {
cp->MaybeBeginShutDown(/* aImmediate */ true,
/* aIgnoreKeepAlivePref */ true);
if (cp->IsDead()) {
// Make sure that this process is no longer accessible from JS by its
// message manager.
cp->ShutDownMessageManager();
}
}
}
/*static*/
already_AddRefed<ContentParent> ContentParent::MinTabSelect(
const nsTArray<ContentParent*>& aContentParents, int32_t aMaxContentParents,
uint64_t aBrowserId) {
uint32_t maxSelectable =
std::min(static_cast<uint32_t>(aContentParents.Length()),
static_cast<uint32_t>(aMaxContentParents));
uint32_t min = INT_MAX;
RefPtr<ContentParent> candidate;
for (uint32_t i = 0; i < maxSelectable; i++) {
ContentParent* p = aContentParents[i];
MOZ_DIAGNOSTIC_ASSERT(!p->IsDead());
if (p->IsShuttingDown()) {
continue;
}
// Check how many other tabs are already hosted by this process. Ignore
// keepalives without a BrowserId as well as keepalives corresponding to
// `aBrowserId` when doing this calculation.
ThreadsafeContentParentHandle* handle = p->ThreadsafeHandle();
RecursiveMutexAutoLock lock(handle->mMutex);
uint32_t keepAliveCount = handle->mKeepAlivesPerBrowserId.Count();
if (handle->mKeepAlivesPerBrowserId.Contains(0)) {
--keepAliveCount;
}
if (aBrowserId != 0 &&
handle->mKeepAlivesPerBrowserId.Contains(aBrowserId)) {
--keepAliveCount;
}
if (keepAliveCount < min) {
candidate = p;
min = keepAliveCount;
}
}
// If all current processes have at least one tab and we have not yet reached
// the maximum, use a new process.
if (min > 0 &&
aContentParents.Length() < static_cast<uint32_t>(aMaxContentParents)) {
return nullptr;
}
// Otherwise we return candidate.
return candidate.forget();
}
/* static */
already_AddRefed<nsIPrincipal>
ContentParent::CreateRemoteTypeIsolationPrincipal(
const nsACString& aRemoteType) {
if ((RemoteTypePrefix(aRemoteType) != FISSION_WEB_REMOTE_TYPE) &&
!StringBeginsWith(aRemoteType, WITH_COOP_COEP_REMOTE_TYPE_PREFIX)) {
return nullptr;
}
int32_t offset = aRemoteType.FindChar('=') + 1;
MOZ_ASSERT(offset > 1, "can not extract origin from that remote type");
nsAutoCString origin(
Substring(aRemoteType, offset, aRemoteType.Length() - offset));
nsIScriptSecurityManager* ssm = nsContentUtils::GetSecurityManager();
nsCOMPtr<nsIPrincipal> principal;
ssm->CreateContentPrincipalFromOrigin(origin, getter_AddRefs(principal));
return principal.forget();
}
/*static*/
UniqueContentParentKeepAlive ContentParent::GetUsedBrowserProcess(
const nsACString& aRemoteType, nsTArray<ContentParent*>& aContentParents,
uint32_t aMaxContentParents, bool aPreferUsed, ProcessPriority aPriority,
uint64_t aBrowserId) {
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
AutoRestore ar(sInProcessSelector);
sInProcessSelector = true;
#endif
uint32_t numberOfParents = aContentParents.Length();
if (aPreferUsed && numberOfParents) {
// If we prefer re-using existing content processes, we don't want to create
// a new process, and instead re-use an existing one, so pretend the process
// limit is at the current number of processes.
aMaxContentParents = numberOfParents;
}
// Use MinTabSelect to choose a content process unless content process re-use
// has been disabled.
RefPtr<ContentParent> selected;
if (!StaticPrefs::dom_ipc_disableContentProcessReuse() &&
(selected =
MinTabSelect(aContentParents, aMaxContentParents, aBrowserId))) {
if (profiler_thread_is_being_profiled_for_markers()) {
nsPrintfCString marker("Reused process %u",
(unsigned int)selected->ChildID());
PROFILER_MARKER_TEXT("Process", DOM, {}, marker);
}
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("GetUsedProcess: Reused process %p (%d) for %s", selected.get(),
(unsigned int)selected->ChildID(),
PromiseFlatCString(aRemoteType).get()));
selected->AssertAlive();
return selected->AddKeepAlive(aBrowserId);
}
// Try to take a preallocated process except for certain remote types.
// Note: this process may not have finished launching yet
UniqueContentParentKeepAlive preallocated;
if (aRemoteType != FILE_REMOTE_TYPE &&
aRemoteType != PRIVILEGEDABOUT_REMOTE_TYPE &&
(preallocated = PreallocatedProcessManager::Take(aRemoteType))) {
MOZ_DIAGNOSTIC_ASSERT(preallocated->GetRemoteType() ==
PREALLOC_REMOTE_TYPE);
preallocated->AssertAlive();
if (profiler_thread_is_being_profiled_for_markers()) {
nsPrintfCString marker(
"Assigned preallocated process %u%s",
(unsigned int)preallocated->ChildID(),
preallocated->IsLaunching() ? " (still launching)" : "");
PROFILER_MARKER_TEXT("Process", DOM, {}, marker);
}
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("Adopted preallocated process %p for type %s%s",
preallocated.get(), PromiseFlatCString(aRemoteType).get(),
preallocated->IsLaunching() ? " (still launching)" : ""));
// This ensures that the preallocator won't shut down the process once
// it finishes starting
preallocated->mRemoteType.Assign(aRemoteType);
{
RecursiveMutexAutoLock lock(preallocated->mThreadsafeHandle->mMutex);
preallocated->mThreadsafeHandle->mRemoteType = preallocated->mRemoteType;
}
preallocated->mRemoteTypeIsolationPrincipal =
CreateRemoteTypeIsolationPrincipal(aRemoteType);
preallocated->mActivateTS = TimeStamp::Now();
preallocated->AddToPool(aContentParents);
// rare, but will happen
if (!preallocated->IsLaunching()) {
// Specialize this process for the appropriate remote type, and activate
// it.
Unused << preallocated->SendRemoteType(preallocated->mRemoteType,
preallocated->mProfile);
preallocated->StartRemoteWorkerService();
nsCOMPtr<nsIObserverService> obs =
mozilla::services::GetObserverService();
if (obs) {
nsAutoString cpId;
cpId.AppendInt(static_cast<uint64_t>(preallocated->ChildID()));
obs->NotifyObservers(static_cast<nsIObserver*>(preallocated.get()),
"process-type-set", cpId.get());
preallocated->AssertAlive();
}
}
// NOTE: Make sure to return a keepalive for the requested aBrowserId. The
// keepalive used by the preallocated process manager will be released upon
// returning.
return preallocated->AddKeepAlive(aBrowserId);
}
return nullptr;
}
/*static*/
UniqueContentParentKeepAlive ContentParent::GetNewOrUsedLaunchingBrowserProcess(
const nsACString& aRemoteType, BrowsingContextGroup* aGroup,
ProcessPriority aPriority, bool aPreferUsed, uint64_t aBrowserId) {
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("GetNewOrUsedProcess for type %s",
PromiseFlatCString(aRemoteType).get()));
if (AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdownConfirmed)) {
return nullptr;
}
// If we have an existing host process attached to this BrowsingContextGroup,
// always return it, as we can never have multiple host processes within a
// single BrowsingContextGroup.
UniqueContentParentKeepAlive contentParent;
if (aGroup) {
if (RefPtr<ContentParent> candidate = aGroup->GetHostProcess(aRemoteType)) {
MOZ_DIAGNOSTIC_ASSERT(!candidate->IsShuttingDown());
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("GetNewOrUsedProcess: Existing host process %p (launching %d)",
candidate.get(), candidate->IsLaunching()));
contentParent = candidate->TryAddKeepAlive(aBrowserId);
}
}
nsTArray<ContentParent*>& contentParents = GetOrCreatePool(aRemoteType);
if (!contentParent) {
// No host process. Let's try to re-use an existing process.
uint32_t maxContentParents = GetMaxProcessCount(aRemoteType);
contentParent =
GetUsedBrowserProcess(aRemoteType, contentParents, maxContentParents,
aPreferUsed, aPriority, aBrowserId);
MOZ_DIAGNOSTIC_ASSERT_IF(contentParent, !contentParent->IsShuttingDown());
}
if (!contentParent) {
// No reusable process. Let's create and launch one.
// The life cycle will be set to `LifecycleState::LAUNCHING`.
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("Launching new process immediately for type %s",
PromiseFlatCString(aRemoteType).get()));
RefPtr<ContentParent> newCp = new ContentParent(aRemoteType);
if (NS_WARN_IF(!newCp->BeginSubprocessLaunch(aPriority))) {
// Launch aborted because of shutdown. Bailout.
newCp->LaunchSubprocessReject();
return nullptr;
}
contentParent = newCp->AddKeepAlive(aBrowserId);
// Until the new process is ready let's not allow to start up any
// preallocated processes. The blocker will be removed once we receive
// the first idle message.
contentParent->mIsAPreallocBlocker = true;
PreallocatedProcessManager::AddBlocker(aRemoteType, contentParent.get());
// Store this process for future reuse.
contentParent->AddToPool(contentParents);
MOZ_LOG(
ContentParent::GetLog(), LogLevel::Debug,
("GetNewOrUsedProcess: new immediate process %p", contentParent.get()));
}
// else we have an existing or preallocated process (which may be
// still launching)
contentParent->AssertAlive();
if (aGroup) {
aGroup->EnsureHostProcess(contentParent.get());
}
return contentParent;
}
/*static*/
RefPtr<ContentParent::LaunchPromise>
ContentParent::GetNewOrUsedBrowserProcessAsync(const nsACString& aRemoteType,
BrowsingContextGroup* aGroup,
ProcessPriority aPriority,
bool aPreferUsed,
uint64_t aBrowserId) {
// Obtain a `ContentParent` launched asynchronously.
UniqueContentParentKeepAlive contentParent =
GetNewOrUsedLaunchingBrowserProcess(aRemoteType, aGroup, aPriority,
aPreferUsed, aBrowserId);
if (!contentParent) {
// In case of launch error, stop here.
return LaunchPromise::CreateAndReject(NS_ERROR_ILLEGAL_DURING_SHUTDOWN,
__func__);
}
return contentParent->WaitForLaunchAsync(aPriority, aBrowserId);
}
/*static*/
UniqueContentParentKeepAlive ContentParent::GetNewOrUsedBrowserProcess(
const nsACString& aRemoteType, BrowsingContextGroup* aGroup,
ProcessPriority aPriority, bool aPreferUsed, uint64_t aBrowserId) {
UniqueContentParentKeepAlive contentParent =
GetNewOrUsedLaunchingBrowserProcess(aRemoteType, aGroup, aPriority,
aPreferUsed, aBrowserId);
if (!contentParent || !contentParent->WaitForLaunchSync(aPriority)) {
// In case of launch error, stop here.
return nullptr;
}
return contentParent;
}
RefPtr<ContentParent::LaunchPromise> ContentParent::WaitForLaunchAsync(
ProcessPriority aPriority, uint64_t aBrowserId) {
MOZ_DIAGNOSTIC_ASSERT(!IsDead());
UniqueContentParentKeepAlive self = AddKeepAlive(aBrowserId);
if (!IsLaunching()) {
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("WaitForLaunchAsync: launched"));
return LaunchPromise::CreateAndResolve(std::move(self), __func__);
}
// We've started an async content process launch.
glean::dom_contentprocess::launch_is_sync
.EnumGet(glean::dom_contentprocess::LaunchIsSyncLabel::eFalse)
.Add();
// We have located a process that hasn't finished initializing, then attempt
// to finish initializing. Both `LaunchSubprocessResolve` and
// `LaunchSubprocessReject` are safe to call multiple times if we race with
// other `WaitForLaunchAsync` callbacks.
return mSubprocess->WhenProcessHandleReady()->Then(
GetCurrentSerialEventTarget(), __func__,
[self = std::move(self), aPriority](
const ProcessHandlePromise::ResolveOrRejectValue& aValue) mutable {
if (aValue.IsResolve() &&
self->LaunchSubprocessResolve(/* aIsSync = */ false, aPriority)) {
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("WaitForLaunchAsync: async, now launched"));
self->mActivateTS = TimeStamp::Now();
return LaunchPromise::CreateAndResolve(std::move(self), __func__);
}
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("WaitForLaunchAsync: async, rejected"));
self->LaunchSubprocessReject();
return LaunchPromise::CreateAndReject(NS_ERROR_FAILURE, __func__);
});
}
bool ContentParent::WaitForLaunchSync(ProcessPriority aPriority) {
MOZ_DIAGNOSTIC_ASSERT(!IsDead());
if (!IsLaunching()) {
return true;
}
// We've started a sync content process launch.
glean::dom_contentprocess::launch_is_sync
.EnumGet(glean::dom_contentprocess::LaunchIsSyncLabel::eTrue)
.Add();
// We're a process which hasn't finished initializing. We may be racing
// against whoever launched it (and whoever else is already racing). Since
// we're sync, we win the race and finish the initialization.
bool launchSuccess = mSubprocess->WaitForProcessHandle();
if (launchSuccess &&
LaunchSubprocessResolve(/* aIsSync = */ true, aPriority)) {
mActivateTS = TimeStamp::Now();
return true;
}
// In case of failure.
LaunchSubprocessReject();
return false;
}
static nsIDocShell* GetOpenerDocShellHelper(Element* aFrameElement) {
// Propagate the private-browsing status of the element's parent
// docshell to the remote docshell, via the chrome flags.
MOZ_ASSERT(aFrameElement);
nsPIDOMWindowOuter* win = aFrameElement->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::RecvCreateClipboardContentAnalysis(
Endpoint<PClipboardContentAnalysisParent>&& aParentEndpoint) {
if (mClipboardContentAnalysisCreated) {
return IPC_FAIL(this, "ClipboardContentAnalysisParent already created");
}
mClipboardContentAnalysisCreated = true;
if (!mClipboardContentAnalysisThread) {
nsresult rv = NS_NewNamedThread(
"BkgrndClipboard", getter_AddRefs(mClipboardContentAnalysisThread));
if (NS_WARN_IF(NS_FAILED(rv))) {
return IPC_FAIL(this, "NS_NewNamedThread failed");
}
}
// Bind the new endpoint to the backgroundClipboardContentAnalysis thread.
mClipboardContentAnalysisThread->Dispatch(
NS_NewRunnableFunction(
"Create ClipboardContentAnalysisParent",
[threadsafeHandle = RefPtr{ThreadsafeHandle()},
parentEndpoint = std::move(aParentEndpoint)]() mutable {
// Use a threadsafe handle here, so that it can
// be used to validate that the WindowContext comes from the
// correct content process.
RefPtr<ClipboardContentAnalysisParent> actor =
new ClipboardContentAnalysisParent(std::move(threadsafeHandle));
parentEndpoint.Bind(actor);
}),
NS_DISPATCH_NORMAL);
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvCreateGMPService() {
Endpoint<PGMPServiceParent> parent;
Endpoint<PGMPServiceChild> child;
if (mGMPCreated) {
return IPC_FAIL(this, "GMP Service already created");
}
nsresult rv;
rv = PGMPService::CreateEndpoints(EndpointProcInfo::Current(),
OtherEndpointProcInfo(), &parent, &child);
if (NS_FAILED(rv)) {
return IPC_FAIL(this, "CreateEndpoints failed");
}
if (!GMPServiceParent::Create(std::move(parent))) {
return IPC_FAIL(this, "GMPServiceParent::Create failed");
}
if (!SendInitGMPService(std::move(child))) {
return IPC_FAIL(this, "SendInitGMPService failed");
}
mGMPCreated = true;
return IPC_OK();
}
IPCResult ContentParent::RecvAttributionEvent(
const nsACString& aHost, PrivateAttributionImpressionType aType,
uint32_t aIndex, const nsAString& aAd, const nsACString& aTargetHost) {
nsCOMPtr<nsIPrivateAttributionService> pa =
components::PrivateAttribution::Service();
if (NS_WARN_IF(!pa)) {
return IPC_OK();
}
pa->OnAttributionEvent(aHost, GetEnumString(aType), aIndex, aAd, aTargetHost);
return IPC_OK();
}
IPCResult ContentParent::RecvAttributionConversion(
const nsACString& aHost, const nsAString& aTask, uint32_t aHistogramSize,
const Maybe<uint32_t>& aLookbackDays,
const Maybe<PrivateAttributionImpressionType>& aImpressionType,
const nsTArray<nsString>& aAds, const nsTArray<nsCString>& aSourceHosts) {
nsCOMPtr<nsIPrivateAttributionService> pa =
components::PrivateAttribution::Service();
if (NS_WARN_IF(!pa)) {
return IPC_OK();
}
pa->OnAttributionConversion(
aHost, aTask, aHistogramSize, aLookbackDays.valueOr(0),
aImpressionType ? GetEnumString(*aImpressionType) : EmptyCString(), aAds,
aSourceHosts);
return IPC_OK();
}
/*static*/
void ContentParent::LogAndAssertFailedPrincipalValidationInfo(
nsIPrincipal* aPrincipal, const char* aMethod) {
// Send Telemetry
nsAutoCString principalScheme, principalType, spec;
mozilla::glean::security::FissionPrincipalsExtra extra = {};
if (!aPrincipal) {
principalType.AssignLiteral("NullPtr");
} else if (aPrincipal->IsSystemPrincipal()) {
principalType.AssignLiteral("SystemPrincipal");
} else if (aPrincipal->GetIsExpandedPrincipal()) {
principalType.AssignLiteral("ExpandedPrincipal");
} else if (aPrincipal->GetIsContentPrincipal()) {
principalType.AssignLiteral("ContentPrincipal");
aPrincipal->GetSpec(spec);
aPrincipal->GetScheme(principalScheme);
extra.scheme = Some(principalScheme);
} else {
principalType.AssignLiteral("Unknown");
}
extra.principaltype = Some(principalType);
extra.value = Some(aMethod);
// Do not send telemetry when chrome-debugging is enabled
bool isChromeDebuggingEnabled =
Preferences::GetBool("devtools.chrome.enabled", false);
if (!isChromeDebuggingEnabled) {
glean::security::fission_principals.Record(mozilla::Some(extra));
}
// And log it
MOZ_LOG(
ContentParent::GetLog(), LogLevel::Error,
(" Receiving unexpected Principal (%s) within %s",
aPrincipal && aPrincipal->GetIsContentPrincipal() ? spec.get()
: principalType.get(),
aMethod));
#ifdef DEBUG
// Not only log but also ensure we do not receive an unexpected
// principal when running in debug mode.
MOZ_ASSERT(false, "Receiving unexpected Principal");
#endif
}
bool ContentParent::ValidatePrincipal(
nsIPrincipal* aPrincipal,
const EnumSet<ValidatePrincipalOptions>& aOptions) {
return ValidatePrincipalCouldPotentiallyBeLoadedBy(aPrincipal, mRemoteType,
aOptions);
}
/*static*/
already_AddRefed<RemoteBrowser> ContentParent::CreateBrowser(
const TabContext& aContext, Element* aFrameElement,
const nsACString& aRemoteType, BrowsingContext* aBrowsingContext,
ContentParent* aOpenerContentParent) {
AUTO_PROFILER_LABEL("ContentParent::CreateBrowser", OTHER);
MOZ_DIAGNOSTIC_ASSERT(
!aBrowsingContext->Canonical()->GetBrowserParent(),
"BrowsingContext must not have BrowserParent, or have previous "
"BrowserParent cleared");
// Don't bother creating new content browsers after entering shutdown. This
// could lead to starting a new content process, which may significantly delay
// shutdown, and the content is unlikely to be displayed.
if (AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdownConfirmed)) {
NS_WARNING("Ignoring remote browser creation request during shutdown");
return nullptr;
}
nsAutoCString remoteType(aRemoteType);
if (remoteType.IsEmpty()) {
remoteType = DEFAULT_REMOTE_TYPE;
}
TabId tabId(nsContentUtils::GenerateTabId());
nsIDocShell* docShell = GetOpenerDocShellHelper(aFrameElement);
TabId openerTabId;
if (docShell) {
openerTabId = BrowserParent::GetTabIdFrom(docShell);
}
// Hold a KeepAlive on our ContentParent throughout this function. Once the
// `BrowserParent` has been created, it can be cleared, as that BrowserParent
// will establish its own KeepAlive.
UniqueContentParentKeepAlive constructorSender;
MOZ_RELEASE_ASSERT(XRE_IsParentProcess(),
"Cannot allocate BrowserParent in content process");
if (aOpenerContentParent && !aOpenerContentParent->IsShuttingDown()) {
constructorSender =
aOpenerContentParent->AddKeepAlive(aBrowsingContext->BrowserId());
} else {
constructorSender = GetNewOrUsedBrowserProcess(
remoteType, aBrowsingContext->Group(), PROCESS_PRIORITY_FOREGROUND,
/* aPreferUsed */ false,
/* aBrowserId */ aBrowsingContext->BrowserId());
if (!constructorSender) {
return nullptr;
}
}
aBrowsingContext->SetEmbedderElement(aFrameElement);
// Ensure that the process which we're using to launch is set as the host
// process for this BrowsingContextGroup.
aBrowsingContext->Group()->EnsureHostProcess(constructorSender.get());
nsCOMPtr<nsIDocShellTreeOwner> treeOwner;
docShell->GetTreeOwner(getter_AddRefs(treeOwner));
if (!treeOwner) {
return nullptr;
}
nsCOMPtr<nsIWebBrowserChrome> wbc = do_GetInterface(treeOwner);
if (!wbc) {
return nullptr;
}
uint32_t chromeFlags = 0;
wbc->GetChromeFlags(&chromeFlags);
nsCOMPtr<nsILoadContext> loadContext = do_QueryInterface(docShell);
if (loadContext && loadContext->UsePrivateBrowsing()) {
chromeFlags |= nsIWebBrowserChrome::CHROME_PRIVATE_WINDOW;
}
if (loadContext && loadContext->UseRemoteTabs()) {
chromeFlags |= nsIWebBrowserChrome::CHROME_REMOTE_WINDOW;
}
if (loadContext && loadContext->UseRemoteSubframes()) {
chromeFlags |= nsIWebBrowserChrome::CHROME_FISSION_WINDOW;
}
if (tabId == 0) {
return nullptr;
}
aBrowsingContext->Canonical()->SetOwnerProcessId(
constructorSender->ChildID());
RefPtr<BrowserParent> browserParent =
new BrowserParent(constructorSender.get(), tabId, aContext,
aBrowsingContext->Canonical(), chromeFlags);
ContentProcessManager* cpm = ContentProcessManager::GetSingleton();
if (NS_WARN_IF(!cpm)) {
return nullptr;
}
cpm->RegisterRemoteFrame(browserParent);
// Open a remote endpoint for our PBrowser actor.
ManagedEndpoint<PBrowserChild> childEp =
constructorSender->OpenPBrowserEndpoint(browserParent);
if (NS_WARN_IF(!childEp.IsValid())) {
return nullptr;
}
nsCOMPtr<nsIPrincipal> initialPrincipal =
NullPrincipal::Create(aBrowsingContext->OriginAttributesRef());
WindowGlobalInit windowInit = WindowGlobalActor::AboutBlankInitializer(
aBrowsingContext, initialPrincipal);
RefPtr<WindowGlobalParent> windowParent =
WindowGlobalParent::CreateDisconnected(windowInit);
if (NS_WARN_IF(!windowParent)) {
return nullptr;
}
// Open a remote endpoint for the initial PWindowGlobal actor.
ManagedEndpoint<PWindowGlobalChild> windowEp =
browserParent->OpenPWindowGlobalEndpoint(windowParent);
if (NS_WARN_IF(!windowEp.IsValid())) {
return nullptr;
}
// Tell the content process to set up its PBrowserChild.
bool ok = constructorSender->SendConstructBrowser(
std::move(childEp), std::move(windowEp), tabId,
aContext.AsIPCTabContext(), windowInit, chromeFlags,
constructorSender->ChildID(), constructorSender->IsForBrowser(),
/* aIsTopLevel */ true);
if (NS_WARN_IF(!ok)) {
return nullptr;
}
// Ensure that we're marked as the current BrowserParent on our
// CanonicalBrowsingContext.
aBrowsingContext->Canonical()->SetCurrentBrowserParent(browserParent);
windowParent->Init();
RefPtr<BrowserHost> browserHost = new BrowserHost(browserParent);
browserParent->SetOwnerElement(aFrameElement);
return browserHost.forget();
}
void ContentParent::GetAll(nsTArray<ContentParent*>& aArray) {
aArray.Clear();
for (auto* cp : AllProcesses(eLive)) {
aArray.AppendElement(cp);
}
}
void ContentParent::GetAllEvenIfDead(nsTArray<ContentParent*>& aArray) {
aArray.Clear();
for (auto* cp : AllProcesses(eAll)) {
aArray.AppendElement(cp);
}
}
void ContentParent::BroadcastStringBundle(
const StringBundleDescriptor& aBundle) {
for (auto* cp : AllProcesses(eLive)) {
AutoTArray<StringBundleDescriptor, 1> array;
array.AppendElement(StringBundleDescriptor(aBundle.bundleURL(),
aBundle.mapHandle().Clone()));
Unused << cp->SendRegisterStringBundles(std::move(array));
}
}
void ContentParent::BroadcastShmBlockAdded(uint32_t aGeneration,
uint32_t aIndex) {
auto* pfl = gfxPlatformFontList::PlatformFontList();
for (auto* cp : AllProcesses(eLive)) {
ReadOnlySharedMemoryHandle handle =
pfl->ShareShmBlockToProcess(aIndex, cp->Pid());
if (!handle.IsValid()) {
// If something went wrong here, we just skip it; the child will need to
// request the block as needed, at some performance cost.
continue;
}
Unused << cp->SendFontListShmBlockAdded(aGeneration, aIndex,
std::move(handle));
}
}
void ContentParent::BroadcastThemeUpdate(widget::ThemeChangeKind aKind) {
const FullLookAndFeel& lnf = *RemoteLookAndFeel::ExtractData();
for (auto* cp : AllProcesses(eLive)) {
Unused << cp->SendThemeChanged(lnf, aKind);
}
}
/*static */
void ContentParent::BroadcastMediaCodecsSupportedUpdate(
RemoteDecodeIn aLocation, const media::MediaCodecsSupported& aSupported) {
// Update processes and print the support info from the given location.
sCodecsSupported[aLocation] = aSupported;
for (auto* cp : AllProcesses(eAll)) {
Unused << cp->SendUpdateMediaCodecsSupported(aLocation, aSupported);
}
nsCString supportString;
media::MCSInfo::GetMediaCodecsSupportedString(supportString, aSupported);
LOGPDM("Broadcast support from '%s', support=%s",
RemoteDecodeInToStr(aLocation), supportString.get());
// Merge incoming support with existing support list from other locations
media::MCSInfo::AddSupport(aSupported);
auto fullSupport = media::MCSInfo::GetSupport();
// Generate + save FULL support string for display in about:support
supportString.Truncate();
media::MCSInfo::GetMediaCodecsSupportedString(supportString, fullSupport);
gfx::gfxVars::SetCodecSupportInfo(supportString);
}
const nsACString& ContentParent::GetRemoteType() const { return mRemoteType; }
static StaticRefPtr<nsIAsyncShutdownClient> sXPCOMShutdownClient;
static StaticRefPtr<nsIAsyncShutdownClient> sProfileBeforeChangeClient;
static StaticRefPtr<nsIAsyncShutdownClient> sAppShutdownConfirmedClient;
void ContentParent::Init() {
MOZ_ASSERT(sXPCOMShutdownClient);
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
size_t length = std::size(sObserverTopics);
for (size_t i = 0; i < length; ++i) {
obs->AddObserver(this, sObserverTopics[i], false);
}
}
if (obs) {
nsAutoString cpId;
cpId.AppendInt(static_cast<uint64_t>(this->ChildID()));
obs->NotifyObservers(static_cast<nsIObserver*>(this), "ipc:content-created",
cpId.get());
}
#ifdef ACCESSIBILITY
// If accessibility is running in chrome process then start it in content
// process.
if (GetAccService()) {
Unused << SendActivateA11y(nsAccessibilityService::GetActiveCacheDomains());
}
#endif // #ifdef ACCESSIBILITY
Unused << SendInitProfiler(ProfilerParent::CreateForProcess(OtherPid()));
RefPtr<GeckoMediaPluginServiceParent> gmps(
GeckoMediaPluginServiceParent::GetSingleton());
if (gmps) {
gmps->UpdateContentProcessGMPCapabilities(this);
}
// Flush any pref updates that happened during launch and weren't
// included in the blobs set up in BeginSubprocessLaunch.
for (const Pref& pref : mQueuedPrefs) {
Unused << NS_WARN_IF(!SendPreferenceUpdate(pref));
}
mQueuedPrefs.Clear();
Unused << SendInitNextGenLocalStorageEnabled(NextGenLocalStorageEnabled());
// sending only the remote settings schemes to the content process
nsCOMPtr<nsIIOService> io(do_GetIOService());
MOZ_ASSERT(io, "No IO service for SimpleURI scheme broadcast to content");
nsTArray<nsCString> remoteSchemes;
MOZ_ALWAYS_SUCCEEDS(io->GetSimpleURIUnknownRemoteSchemes(remoteSchemes));
Unused << SendSimpleURIUnknownRemoteSchemes(std::move(remoteSchemes));
}
void ContentParent::AsyncSendShutDownMessage() {
MOZ_LOG(ContentParent::GetLog(), LogLevel::Verbose,
("AsyncSendShutDownMessage %p", this));
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(IsDead());
if (mShutdownPending || !CanSend()) {
// Don't bother dispatching a runnable if shutdown is already pending or the
// channel has already been disconnected, as it won't do anything.
// We could be very late in shutdown and unable to dispatch.
return;
}
// In the case of normal shutdown, send a shutdown message to child to
// allow it to perform shutdown tasks.
GetCurrentSerialEventTarget()->Dispatch(NewRunnableMethod<ShutDownMethod>(
"dom::ContentParent::ShutDownProcess", this,
&ContentParent::ShutDownProcess, SEND_SHUTDOWN_MESSAGE));
}
void MaybeLogBlockShutdownDiagnostics(ContentParent* aSelf, const char* aMsg,
const char* aFile, int32_t aLine) {
#if defined(MOZ_DIAGNOSTIC_ASSERT_ENABLED)
if (aSelf->IsBlockingShutdown()) {
MOZ_LOG(ContentParent::GetLog(), LogLevel::Info,
("ContentParent: id=%p pid=%d - %s at %s(%d)", aSelf, aSelf->Pid(),
aMsg, aFile, aLine));
}
#else
Unused << aSelf;
Unused << aMsg;
Unused << aFile;
Unused << aLine;
#endif
}
bool ContentParent::ShutDownProcess(ShutDownMethod aMethod) {
bool result = false;
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("ShutDownProcess: %p", this));
// NB: must MarkAsDead() here so that this isn't accidentally
// returned from Get*() while in the midst of shutdown.
MarkAsDead();
// 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 (!mShutdownPending) {
if (CanSend()) {
// Stop sending input events with input priority when shutting down.
SetInputPriorityEventEnabled(false);
// If we did not earlier, let's signal the shutdown to JS now.
SignalImpendingShutdownToContentJS();
// Adjust the QoS priorities for shutdown, if they exist.
if (StaticPrefs::threads_use_low_power_enabled() &&
StaticPrefs::
threads_lower_mainthread_priority_in_background_enabled()) {
SetMainThreadQoSPriority(nsIThread::QOS_PRIORITY_NORMAL);
}
// Send a high priority announcement first. If this fails, SendShutdown
// will also fail.
Unused << SendShutdownConfirmedHP();
// Send the definite message with normal priority.
if (SendShutdown()) {
MaybeLogBlockShutdownDiagnostics(
this, "ShutDownProcess: Sent shutdown message.", __FILE__,
__LINE__);
mShutdownPending = true;
// We start the kill timer only after we asked our process to
// shutdown.
StartForceKillTimer();
result = true;
} else {
MaybeLogBlockShutdownDiagnostics(
this, "ShutDownProcess: !!! Send shutdown message failed! !!!",
__FILE__, __LINE__);
}
} else {
MaybeLogBlockShutdownDiagnostics(
this, "ShutDownProcess: !!! !CanSend !!!", __FILE__, __LINE__);
}
} else {
MaybeLogBlockShutdownDiagnostics(
this, "ShutDownProcess: Shutdown already pending.", __FILE__,
__LINE__);
result = true;
}
// If call was not successful, the channel must have been broken
// somehow, and we will clean up the error in ActorDestroy.
return result;
}
using mozilla::dom::quota::QuotaManagerService;
if (QuotaManagerService* qms = QuotaManagerService::GetOrCreate()) {
qms->AbortOperationsForProcess(mChildID);
}
if (aMethod == CLOSE_CHANNEL) {
if (!mCalledClose) {
MaybeLogBlockShutdownDiagnostics(
this, "ShutDownProcess: Closing channel.", __FILE__, __LINE__);
// Close() can only be called once: It kicks off the destruction sequence.
mCalledClose = true;
Close();
}
result = true;
}
// 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
ShutDownMessageManager();
return result;
}
mozilla::ipc::IPCResult ContentParent::RecvNotifyShutdownSuccess() {
if (!mShutdownPending) {
return IPC_FAIL(this, "RecvNotifyShutdownSuccess without mShutdownPending");
}
mIsNotifiedShutdownSuccess = true;
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvFinishShutdown() {
if (!mShutdownPending) {
return IPC_FAIL(this, "RecvFinishShutdown without mShutdownPending");
}
// At this point, we already called ShutDownProcess once with
// SEND_SHUTDOWN_MESSAGE. To actually close the channel, we call
// ShutDownProcess again with CLOSE_CHANNEL.
if (mCalledClose) {
MaybeLogBlockShutdownDiagnostics(
this, "RecvFinishShutdown: Channel already closed.", __FILE__,
__LINE__);
}
ShutDownProcess(CLOSE_CHANNEL);
return IPC_OK();
}
void ContentParent::ShutDownMessageManager() {
if (!mMessageManager) {
return;
}
mMessageManager->SetOsPid(-1);
mMessageManager->Disconnect();
mMessageManager = nullptr;
}
void ContentParent::AddToPool(nsTArray<ContentParent*>& aPool) {
MOZ_DIAGNOSTIC_ASSERT(!mIsInPool);
AssertAlive();
MOZ_DIAGNOSTIC_ASSERT(!mCalledKillHard);
aPool.AppendElement(this);
mIsInPool = true;
}
void ContentParent::RemoveFromPool(nsTArray<ContentParent*>& aPool) {
MOZ_DIAGNOSTIC_ASSERT(mIsInPool);
aPool.RemoveElement(this);
mIsInPool = false;
}
void ContentParent::AssertNotInPool() {
MOZ_RELEASE_ASSERT(!mIsInPool);
MOZ_RELEASE_ASSERT(!sBrowserContentParents ||
!sBrowserContentParents->Contains(mRemoteType) ||
!sBrowserContentParents->Get(mRemoteType)->Contains(this));
for (const auto& group : mGroups) {
MOZ_RELEASE_ASSERT(group->GetHostProcess(mRemoteType) != this,
"still a host process for one of our groups?");
}
}
void ContentParent::AssertAlive() {
MOZ_DIAGNOSTIC_ASSERT(!mIsSignaledImpendingShutdown);
MOZ_DIAGNOSTIC_ASSERT(!IsDead());
}
void ContentParent::RemoveFromList() {
if (!mIsInPool) {
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
AssertNotInPool();
#endif
return;
}
// Ensure that this BrowsingContextGroup is no longer used to host new
// documents from any associated BrowsingContextGroups. It may become a host
// again in the future, if it is restored to the pool.
for (const auto& group : mGroups) {
group->RemoveHostProcess(this);
}
if (sBrowserContentParents) {
if (auto entry = sBrowserContentParents->Lookup(mRemoteType)) {
const auto& contentParents = entry.Data();
RemoveFromPool(*contentParents);
if (contentParents->IsEmpty()) {
entry.Remove();
}
}
if (sBrowserContentParents->IsEmpty()) {
delete sBrowserContentParents;
sBrowserContentParents = nullptr;
}
}
}
void ContentParent::MarkAsDead() {
MOZ_LOG(ContentParent::GetLog(), LogLevel::Verbose,
("Marking ContentProcess %p as dead", this));
MOZ_DIAGNOSTIC_ASSERT(!sInProcessSelector);
RemoveFromList();
// Flag shutdown has started for us to our threadsafe handle.
{
// Depending on how we get here, the lock might or might not be set.
RecursiveMutexAutoLock lock(mThreadsafeHandle->mMutex);
mThreadsafeHandle->mShutdownStarted = true;
}
// Prevent this process from being re-used.
PreallocatedProcessManager::Erase(this);
#if defined(MOZ_WIDGET_ANDROID) && !defined(MOZ_PROFILE_GENERATE)
if (IsAlive()) {
// We're intentionally killing the content process at this point to ensure
// that we never have a "dead" content process sitting around and occupying
// an Android Service.
//
// The exception is in MOZ_PROFILE_GENERATE builds where we must allow the
// process to shutdown cleanly so that profile data can be dumped. This is
// okay as we will not reach our process limit during the profile run.
nsCOMPtr<nsIEventTarget> launcherThread(GetIPCLauncher());
MOZ_ASSERT(launcherThread);
auto procType = java::GeckoProcessType::CONTENT();
auto selector =
java::GeckoProcessManager::Selector::New(procType, OtherPid());
launcherThread->Dispatch(NS_NewRunnableFunction(
"ContentParent::MarkAsDead",
[selector =
java::GeckoProcessManager::Selector::GlobalRef(selector)]() {
java::GeckoProcessManager::ShutdownProcess(selector);
}));
}
#endif
mLifecycleState = LifecycleState::DEAD;
}
void ContentParent::ProcessingError(Result aCode, const char* aReason) {
if (MsgDropped == aCode) {
return;
}
// Other errors are big deals.
#ifndef FUZZING
KillHard(aReason);
#endif
if (CanSend()) {
GetIPCChannel()->InduceConnectionError();
}
}
void ContentParent::ActorDestroy(ActorDestroyReason why) {
#ifdef FUZZING_SNAPSHOT
MOZ_FUZZING_IPC_DROP_PEER("ContentParent::ActorDestroy");
#endif
// Gather process lifetime telemetry.
if (StringBeginsWith(mRemoteType, WEB_REMOTE_TYPE) ||
mRemoteType == FILE_REMOTE_TYPE || mRemoteType == EXTENSION_REMOTE_TYPE) {
TimeDuration runtime = TimeStamp::Now() - mActivateTS;
glean::process::lifetime.AccumulateRawDuration(runtime);
}
if (mSendShutdownTimer) {
mSendShutdownTimer->Cancel();
mSendShutdownTimer = nullptr;
}
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.
RemoveShutdownBlockers();
if (mHangMonitorActor) {
ProcessHangMonitor::RemoveProcess(mHangMonitorActor);
mHangMonitorActor = nullptr;
}
RefPtr<FileSystemSecurity> 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(CLOSE_CHANNEL);
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
size_t length = std::size(sObserverTopics);
for (size_t i = 0; i < length; ++i) {
obs->RemoveObserver(static_cast<nsIObserver*>(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();
// Destroy our JSProcessActors, and reject any pending queries.
JSActorDidDestroy();
if (obs) {
RefPtr<nsHashPropertyBag> props = new nsHashPropertyBag();
props->SetPropertyAsUint64(u"childID"_ns, mChildID);
if (AbnormalShutdown == why) {
glean::subprocess::abnormal_abort.Get("content"_ns).Add(1);
props->SetPropertyAsBool(u"abnormal"_ns, true);
nsAutoString dumpID;
// 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) {
#if defined(XP_MACOSX)
RefPtr<nsAvailableMemoryWatcherBase> memWatcher;
memWatcher = nsAvailableMemoryWatcherBase::GetSingleton();
memWatcher->AddChildAnnotations(mCrashReporter);
#endif
mCrashReporter->GenerateCrashReport();
}
if (mCrashReporter->HasMinidump()) {
dumpID = mCrashReporter->MinidumpID();
}
} else {
HandleOrphanedMinidump(&dumpID);
}
if (!dumpID.IsEmpty()) {
props->SetPropertyAsAString(u"dumpID"_ns, dumpID);
}
}
nsAutoString cpId;
cpId.AppendInt(static_cast<uint64_t>(this->ChildID()));
obs->NotifyObservers((nsIPropertyBag2*)props, "ipc:content-shutdown",
cpId.get());
}
// Remove any and all idle listeners.
if (mIdleListeners.Length() > 0) {
nsCOMPtr<nsIUserIdleService> idleService =
do_GetService("@mozilla.org/widget/useridleservice;1");
if (idleService) {
RefPtr<ParentIdleListener> listener;
for (const auto& lentry : mIdleListeners) {
listener = static_cast<ParentIdleListener*>(lentry.get());
idleService->RemoveIdleObserver(listener, listener->mTime);
}
}
mIdleListeners.Clear();
}
MOZ_LOG(ContentParent::GetLog(), LogLevel::Verbose,
("destroying Subprocess in ActorDestroy: ContentParent %p "
"mSubprocess %p handle %" PRIuPTR,
this, mSubprocess,
mSubprocess ? (uintptr_t)mSubprocess->GetChildProcessHandle() : -1));
if (GetCurrentSerialEventTarget()) {
GetCurrentSerialEventTarget()->Dispatch(NS_NewRunnableFunction(
"DelayedDeleteSubprocessRunnable", [subprocess = mSubprocess] {
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("destroyed Subprocess in ActorDestroy: Subprocess %p handle "
"%" PRIuPTR,
subprocess,
subprocess ? (uintptr_t)subprocess->GetChildProcessHandle()
: -1));
subprocess->Destroy();
}));
}
mSubprocess = nullptr;
ContentProcessManager* cpm = ContentProcessManager::GetSingleton();
if (cpm) {
cpm->RemoveContentProcess(this->ChildID());
}
if (mDriverCrashGuard) {
mDriverCrashGuard->NotifyCrashed();
}
// Unregister all the BlobURLs registered by the ContentChild.
BlobURLProtocolHandler::RemoveDataEntriesPerContentParent(ChildID());
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
AssertNotInPool();
#endif
// As this process is going away, ensure that every BrowsingContext hosted by
// it has been detached, and every BrowsingContextGroup has been fully
// unsubscribed.
BrowsingContext::DiscardFromContentParent(this);
const nsTHashSet<RefPtr<BrowsingContextGroup>> groups = std::move(mGroups);
for (const auto& group : groups) {
group->Unsubscribe(this);
}
MOZ_DIAGNOSTIC_ASSERT(mGroups.IsEmpty());
mPendingLoadStates.Clear();
}
UniqueContentParentKeepAlive ContentParent::TryAddKeepAlive(
uint64_t aBrowserId) {
UniqueContentParentKeepAlive keepAlive =
UniqueContentParentKeepAliveFromThreadsafe(
mThreadsafeHandle->TryAddKeepAlive(aBrowserId));
// If we successfully added a KeepAlive, we can cancel any pending
// MaybeBeginShutDown call (as it will no longer begin process shutdown due to
// outstanding KeepAlives).
// This is just an optimization and the MaybeBeginShutDown call will be a
// no-op if it is called with the KeepAlive held.
if (keepAlive && mMaybeBeginShutdownRunner) {
mMaybeBeginShutdownRunner->Cancel();
mMaybeBeginShutdownRunner = nullptr;
}
return keepAlive;
}
UniqueContentParentKeepAlive ContentParent::AddKeepAlive(uint64_t aBrowserId) {
UniqueContentParentKeepAlive keepAlive = TryAddKeepAlive(aBrowserId);
MOZ_DIAGNOSTIC_ASSERT(keepAlive, "ContentParent is already dead");
return keepAlive;
}
void ContentParent::RemoveKeepAlive(uint64_t aBrowserId) {
AssertIsOnMainThread();
{
RecursiveMutexAutoLock lock(mThreadsafeHandle->mMutex);
auto entry = mThreadsafeHandle->mKeepAlivesPerBrowserId.Lookup(aBrowserId);
MOZ_RELEASE_ASSERT(entry, "No KeepAlive for this BrowserId");
if (!--entry.Data()) {
entry.Remove();
}
}
MaybeBeginShutDown();
}
void ContentParent::MaybeBeginShutDown(bool aImmediate,
bool aIgnoreKeepAlivePref) {
AssertIsOnMainThread();
MOZ_ASSERT(!aIgnoreKeepAlivePref || aImmediate,
"aIgnoreKeepAlivePref requires aImmediate");
// Don't bother waiting, even if `aImmediate` is not true, if the process
// can no longer be re-used (e.g. because it is dead, or we're in shutdown).
bool immediate =
aImmediate || IsDead() ||
AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdownConfirmed) ||
StaticPrefs::dom_ipc_processReuse_unusedGraceMs() == 0;
// Clean up any scheduled idle task unless we schedule a new one.
auto cancelIdleTask = MakeScopeExit([&] {
if (mMaybeBeginShutdownRunner) {
mMaybeBeginShutdownRunner->Cancel();
mMaybeBeginShutdownRunner = nullptr;
}
});
{
RecursiveMutexAutoLock lock(mThreadsafeHandle->mMutex);
// If we still have keepalives or are still launching, we're not shutting
// down. Return.
if (IsLaunching() ||
!mThreadsafeHandle->mKeepAlivesPerBrowserId.IsEmpty()) {
return;
}
// If we're not in main process shutdown, we might want to keep some content
// processes alive for performance reasons (e.g. test runs and privileged
// content process for some about: pages). We don't want to alter behavior
// if the pref is not set, so default to 0.
if (!aIgnoreKeepAlivePref && mIsInPool && !mRemoteType.Contains('=') &&
!AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdownConfirmed)) {
auto* contentParents = sBrowserContentParents->Get(mRemoteType);
MOZ_RELEASE_ASSERT(
contentParents,
"mIsInPool, yet no entry for mRemoteType in sBrowserContentParents?");
nsAutoCString keepAlivePref("dom.ipc.keepProcessesAlive.");
keepAlivePref.Append(mRemoteType);
int32_t processesToKeepAlive = 0;
if (NS_SUCCEEDED(Preferences::GetInt(keepAlivePref.get(),
&processesToKeepAlive)) &&
contentParents->Length() <=
static_cast<size_t>(processesToKeepAlive)) {
// We're keeping this process alive even though there are no keepalives
// for it due to the keepalive pref.
return;
}
}
if (immediate) {
// We're not keeping this process alive, begin shutdown.
mThreadsafeHandle->mShutdownStarted = true;
}
}
// If we're not beginning shutdown immediately, make sure an idle task runner
// is scheduled to call us back. This delay is intended to avoid unnecessary
// process churn when a process becomes momentarily unused (which can happen
// frequently when running tests).
if (!immediate) {
// We want an idle task to call us back, don't cancel it.
cancelIdleTask.release();
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("MaybeBeginShutDown(%d) would begin shutdown, %s", OtherChildID(),
mMaybeBeginShutdownRunner ? "already delayed" : "delaying"));
if (!mMaybeBeginShutdownRunner) {
TimeDuration startDelay = TimeDuration::FromMilliseconds(
StaticPrefs::dom_ipc_processReuse_unusedGraceMs());
TimeDuration maxDelay = startDelay + TimeDuration::FromSeconds(1);
mMaybeBeginShutdownRunner = IdleTaskRunner::Create(
[self = RefPtr{this}](TimeStamp) -> bool {
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("MaybeBeginShutDown(%d) resuming after delay",
self->OtherChildID()));
self->MaybeBeginShutDown(/* aImmediate */ true);
return true;
},
"ContentParent::IdleMaybeBeginShutdown", startDelay, maxDelay,
/* aMinimumUsefulBudget */ TimeDuration::FromMilliseconds(3),
/* aRepeating */ false, [] { return false; });
}
return;
}
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("MaybeBeginShutDown(%d) shutdown starting (%u bps)", OtherChildID(),
ManagedPBrowserParent().Count()));
MarkAsDead();
SignalImpendingShutdownToContentJS();
if (ManagedPBrowserParent().Count() > 0) {
// We still have PBrowser instances which have not been shut down.
// Wait for them to be destroyed before we follow-through and shut down this
// process, but start a shutdown timer to kill them if this takes too long.
StartSendShutdownTimer();
} else {
// All tabs are dead, we can fully begin shutting down.
AsyncSendShutDownMessage();
}
}
void ContentParent::StartSendShutdownTimer() {
if (mSendShutdownTimer || !CanSend()) {
return;
}
uint32_t timeoutSecs = StaticPrefs::dom_ipc_tabs_shutdownTimeoutSecs();
if (timeoutSecs > 0) {
NS_NewTimerWithFuncCallback(getter_AddRefs(mSendShutdownTimer),
ContentParent::SendShutdownTimerCallback, this,
timeoutSecs * 1000, nsITimer::TYPE_ONE_SHOT,
"dom::ContentParent::StartSendShutdownTimer");
MOZ_ASSERT(mSendShutdownTimer);
}
}
void ContentParent::StartForceKillTimer() {
if (mForceKillTimer || !CanSend()) {
return;
}
uint32_t timeoutSecs = StaticPrefs::dom_ipc_tabs_shutdownTimeoutSecs();
if (timeoutSecs > 0) {
NS_NewTimerWithFuncCallback(getter_AddRefs(mForceKillTimer),
ContentParent::ForceKillTimerCallback, this,
timeoutSecs * 1000, nsITimer::TYPE_ONE_SHOT,
"dom::ContentParent::StartForceKillTimer");
MOZ_ASSERT(mForceKillTimer);
}
}
TestShellParent* ContentParent::CreateTestShell() {
RefPtr<TestShellParent> actor = new TestShellParent();
if (!SendPTestShellConstructor(actor)) {
return nullptr;
}
return actor;
}
bool ContentParent::DestroyTestShell(TestShellParent* aTestShell) {
return PTestShellParent::Send__delete__(aTestShell);
}
TestShellParent* ContentParent::GetTestShellSingleton() {
PTestShellParent* p = LoneManagedOrNullAsserts(ManagedPTestShellParent());
return static_cast<TestShellParent*>(p);
}
#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
// Append the sandbox command line parameters that are not static. i.e.,
// parameters that can be different for different child processes.
void ContentParent::AppendDynamicSandboxParams(
std::vector<std::string>& aArgs) {
// For file content processes
if (GetRemoteType() == FILE_REMOTE_TYPE) {
MacSandboxInfo::AppendFileAccessParam(aArgs, true);
}
}
// Generate the static sandbox command line parameters and store
// them in the provided params vector to be used each time a new
// content process is launched.
static void CacheSandboxParams(std::vector<std::string>& aCachedParams) {
// This must only be called once and we should
// be starting with an empty list of parameters.
MOZ_ASSERT(aCachedParams.empty());
MacSandboxInfo info;
info.type = MacSandboxType_Content;
info.level = GetEffectiveContentSandboxLevel();
// Sandbox logging
if (Preferences::GetBool("security.sandbox.logging.enabled") ||
PR_GetEnv("MOZ_SANDBOX_LOGGING")) {
info.shouldLog = true;
}
// Audio access
if (!StaticPrefs::media_cubeb_sandbox()) {
info.hasAudio = true;
}
// Window server access. If the disconnect-windowserver pref is not
// "true" or out-of-process WebGL is not enabled, allow window server
// access in the sandbox policy.
if (!Preferences::GetBool(
"security.sandbox.content.mac.disconnect-windowserver") ||
!Preferences::GetBool("webgl.out-of-process")) {
info.hasWindowServer = true;
}
// .app path (normalized)
nsAutoCString appPath;
if (!nsMacUtilsImpl::GetAppPath(appPath)) {
MOZ_CRASH("Failed to get app dir paths");
}
info.appPath = appPath.get();
// TESTING_READ_PATH1
nsAutoCString testingReadPath1;
Preferences::GetCString("security.sandbox.content.mac.testing_read_path1",
testingReadPath1);
if (!testingReadPath1.IsEmpty()) {
info.testingReadPath1 = testingReadPath1.get();
}
// TESTING_READ_PATH2
nsAutoCString testingReadPath2;
Preferences::GetCString("security.sandbox.content.mac.testing_read_path2",
testingReadPath2);
if (!testingReadPath2.IsEmpty()) {
info.testingReadPath2 = testingReadPath2.get();
}
// TESTING_READ_PATH3, TESTING_READ_PATH4. In non-packaged builds,
// these are used to whitelist the repo dir and object dir respectively.
nsresult rv;
if (!mozilla::IsPackagedBuild()) {
// Repo dir
nsCOMPtr<nsIFile> repoDir;
rv = nsMacUtilsImpl::GetRepoDir(getter_AddRefs(repoDir));
if (NS_FAILED(rv)) {
MOZ_CRASH("Failed to get path to repo dir");
}
nsCString repoDirPath;
Unused << repoDir->GetNativePath(repoDirPath);
info.testingReadPath3 = repoDirPath.get();
// Object dir
nsCOMPtr<nsIFile> objDir;
rv = nsMacUtilsImpl::GetObjDir(getter_AddRefs(objDir));
if (NS_FAILED(rv)) {
MOZ_CRASH("Failed to get path to build object dir");
}
nsCString objDirPath;
Unused << objDir->GetNativePath(objDirPath);
info.testingReadPath4 = objDirPath.get();
}
// DEBUG_WRITE_DIR
# ifdef DEBUG
// For bloat/leak logging or when a content process dies intentionally
// (|NoteIntentionalCrash|) for tests, it wants to log that it did this.
// Allow writing to this location.
nsAutoCString bloatLogDirPath;
if (NS_SUCCEEDED(nsMacUtilsImpl::GetBloatLogDir(bloatLogDirPath))) {
info.debugWriteDir = bloatLogDirPath.get();
}
# endif // DEBUG
info.AppendAsParams(aCachedParams);
}
// Append sandboxing command line parameters.
void ContentParent::AppendSandboxParams(std::vector<std::string>& aArgs) {
MOZ_ASSERT(sMacSandboxParams != nullptr);
// An empty sMacSandboxParams indicates this is the
// first invocation and we don't have cached params yet.
if (sMacSandboxParams->empty()) {
CacheSandboxParams(*sMacSandboxParams);
MOZ_ASSERT(!sMacSandboxParams->empty());
}
// Append cached arguments.
aArgs.insert(aArgs.end(), sMacSandboxParams->begin(),
sMacSandboxParams->end());
// Append remaining arguments.
AppendDynamicSandboxParams(aArgs);
}
#endif // XP_MACOSX && MOZ_SANDBOX
bool ContentParent::BeginSubprocessLaunch(ProcessPriority aPriority) {
AUTO_PROFILER_LABEL("ContentParent::LaunchSubprocess", OTHER);
// Ensure we will not rush through our shutdown phases while launching.
// LaunchSubprocessReject will remove them in case of failure,
// otherwise ActorDestroy will take care.
AddShutdownBlockers();
if (!ContentProcessManager::GetSingleton()) {
MOZ_ASSERT(false, "Unable to acquire ContentProcessManager singleton!");
return false;
}
geckoargs::ChildProcessArgs extraArgs;
geckoargs::sIsForBrowser.Put(IsForBrowser(), extraArgs);
geckoargs::sNotForBrowser.Put(!IsForBrowser(), extraArgs);
// Prefs information is passed via anonymous shared memory to avoid bloating
// the command line.
// Instantiate the pref serializer. It will be cleaned up in
// `LaunchSubprocessReject`/`LaunchSubprocessResolve`.
mPrefSerializer = MakeUnique<mozilla::ipc::SharedPreferenceSerializer>();
if (!mPrefSerializer->SerializeToSharedMemory(GeckoProcessType_Content,
GetRemoteType())) {
NS_WARNING("SharedPreferenceSerializer::SerializeToSharedMemory failed");
MarkAsDead();
return false;
}
mPrefSerializer->AddSharedPrefCmdLineArgs(*mSubprocess, extraArgs);
// The JS engine does some computation during the initialization which can be
// shared across processes. We add command line arguments to pass a file
// handle and its content length, to minimize the startup time of content
// processes.
::mozilla::ipc::ExportSharedJSInit(*mSubprocess, extraArgs);
// Register ContentParent as an observer for changes to any pref
// whose prefix matches the empty string, i.e. all of them. The
// observation starts here in order to capture pref updates that
// happen during async launch.
Preferences::AddStrongObserver(this, "");
geckoargs::sSafeMode.Put(gSafeMode, extraArgs);
#if defined(XP_MACOSX) && defined(MOZ_SANDBOX)
if (IsContentSandboxEnabled()) {
AppendSandboxParams(extraArgs.mArgs);
mSubprocess->DisableOSActivityMode();
}
#endif
nsCString parentBuildID(mozilla::PlatformBuildID());
geckoargs::sParentBuildID.Put(parentBuildID.get(), extraArgs);
#ifdef MOZ_WIDGET_GTK
// This is X11-only pending a solution for WebGL in Wayland mode.
if (StaticPrefs::dom_ipc_avoid_gtk() && widget::GdkIsX11Display()) {
mSubprocess->SetEnv("MOZ_HEADLESS", "1");
}
#endif
mLaunchYieldTS = TimeStamp::Now();
return mSubprocess->AsyncLaunch(std::move(extraArgs));
}
void ContentParent::LaunchSubprocessReject() {
NS_WARNING("failed to launch child in the parent");
MOZ_LOG(ContentParent::GetLog(), LogLevel::Verbose,
("failed to launch child in the parent"));
// Now that communication with the child is complete, we can cleanup
// the preference serializer.
mPrefSerializer = nullptr;
if (mIsAPreallocBlocker) {
PreallocatedProcessManager::RemoveBlocker(mRemoteType, this);
mIsAPreallocBlocker = false;
}
MarkAsDead();
RemoveShutdownBlockers();
}
bool ContentParent::LaunchSubprocessResolve(bool aIsSync,
ProcessPriority aPriority) {
AUTO_PROFILER_LABEL("ContentParent::LaunchSubprocess::resolve", OTHER);
if (mLaunchResolved) {
// We've already been called, return.
MOZ_ASSERT(sCreatedFirstContentProcess);
MOZ_ASSERT(!mPrefSerializer);
MOZ_ASSERT(mLifecycleState != LifecycleState::LAUNCHING);
return mLaunchResolvedOk;
}
mLaunchResolved = true;
// Now that communication with the child is complete, we can cleanup
// the preference serializer.
mPrefSerializer = nullptr;
const auto launchResumeTS = TimeStamp::Now();
if (profiler_thread_is_being_profiled_for_markers()) {
nsPrintfCString marker("Process start%s for %u",
mIsAPreallocBlocker ? " (immediate)" : "",
(unsigned int)ChildID());
PROFILER_MARKER_TEXT(
mIsAPreallocBlocker ? ProfilerString8View("Process Immediate Launch")
: ProfilerString8View("Process Launch"),
DOM, MarkerTiming::Interval(mLaunchTS, launchResumeTS), marker);
}
if (!sCreatedFirstContentProcess) {
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
obs->NotifyObservers(nullptr, "ipc:first-content-process-created", nullptr);
sCreatedFirstContentProcess = true;
}
mSubprocess->TakeInitialEndpoint().Bind(this);
ContentProcessManager* cpm = ContentProcessManager::GetSingleton();
if (!cpm) {
NS_WARNING("immediately shutting-down caused by our shutdown");
ShutDownProcess(SEND_SHUTDOWN_MESSAGE);
return false;
}
cpm->AddContentProcess(this);
#ifdef MOZ_CODE_COVERAGE
Unused << SendShareCodeCoverageMutex(
CodeCoverageHandler::Get()->GetMutexHandle());
#endif
// We must be in the LAUNCHING state still. If we've somehow already been
// marked as DEAD, fail the process launch, and immediately begin tearing down
// the content process.
if (IsDead()) {
NS_WARNING("immediately shutting-down already-dead process");
ShutDownProcess(SEND_SHUTDOWN_MESSAGE);
return false;
}
MOZ_ASSERT(mLifecycleState == LifecycleState::LAUNCHING);
mLifecycleState = LifecycleState::ALIVE;
if (!InitInternal(aPriority)) {
NS_WARNING("failed to initialize child in the parent");
// We've already called Open() by this point, so we need to close the
// channel to avoid leaking the process.
ShutDownProcess(SEND_SHUTDOWN_MESSAGE);
return false;
}
mHangMonitorActor = ProcessHangMonitor::AddProcess(this);
// Set a reply timeout for CPOWs.
SetReplyTimeoutMs(StaticPrefs::dom_ipc_cpow_timeout());
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
nsAutoString cpId;
cpId.AppendInt(static_cast<uint64_t>(this->ChildID()));
obs->NotifyObservers(static_cast<nsIObserver*>(this),
"ipc:content-initializing", cpId.get());
}
Init();
mLifecycleState = LifecycleState::INITIALIZED;
if (aIsSync) {
glean::dom_contentprocess::sync_launch.AccumulateRawDuration(
TimeStamp::Now() - mLaunchTS);
} else {
glean::dom_contentprocess::launch_total.AccumulateRawDuration(
TimeStamp::Now() - mLaunchTS);
glean::dom_contentprocess::launch_mainthread.AccumulateRawDuration(
(mLaunchYieldTS - mLaunchTS) + (TimeStamp::Now() - launchResumeTS));
}
mLaunchResolvedOk = true;
return true;
}
static bool IsFileContent(const nsACString& aRemoteType) {
return aRemoteType == FILE_REMOTE_TYPE;
}
ContentParent::ContentParent(const nsACString& aRemoteType)
: mSubprocess(new GeckoChildProcessHost(GeckoProcessType_Content,
IsFileContent(aRemoteType))),
mLaunchTS(TimeStamp::Now()),
mLaunchYieldTS(mLaunchTS),
mActivateTS(mLaunchTS),
mIsAPreallocBlocker(false),
mRemoteType(aRemoteType),
mChildID(mSubprocess->GetChildID()),
mGeolocationWatchID(-1),
mThreadsafeHandle(
new ThreadsafeContentParentHandle(this, mChildID, mRemoteType)),
mLifecycleState(LifecycleState::LAUNCHING),
mIsForBrowser(!mRemoteType.IsEmpty()),
mCalledClose(false),
mCalledKillHard(false),
mCreatedPairedMinidumps(false),
mShutdownPending(false),
mLaunchResolved(false),
mLaunchResolvedOk(false),
mIsRemoteInputEventQueueEnabled(false),
mIsInputPriorityEventEnabled(false),
mIsInPool(false),
mGMPCreated(false),
mClipboardContentAnalysisCreated(false),
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
mBlockShutdownCalled(false),
#endif
mHangMonitorActor(nullptr) {
MOZ_ASSERT(NS_IsMainThread(), "Wrong thread!");
mRemoteTypeIsolationPrincipal =
CreateRemoteTypeIsolationPrincipal(aRemoteType);
// Insert ourselves into the global linked list of ContentParent objects.
if (!sContentParents) {
sContentParents = new LinkedList<ContentParent>();
}
sContentParents->insertBack(this);
mMessageManager = nsFrameMessageManager::NewProcessMessageManager(true);
#if defined(XP_WIN)
// 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
MOZ_LOG(ContentParent::GetLog(), LogLevel::Verbose,
("CreateSubprocess: ContentParent %p mSubprocess %p childID %d", this,
mSubprocess, mSubprocess->GetChildID()));
}
ContentParent::~ContentParent() {
if (mSendShutdownTimer) {
mSendShutdownTimer->Cancel();
}
if (mForceKillTimer) {
mForceKillTimer->Cancel();
}
AssertIsOnMainThread();
// Clear the weak reference from the threadsafe handle back to this actor.
mThreadsafeHandle->mWeakActor = nullptr;
if (mIsAPreallocBlocker) {
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("Removing blocker on ContentProcess destruction"));
PreallocatedProcessManager::RemoveBlocker(mRemoteType, this);
mIsAPreallocBlocker = false;
}
// We should be removed from all these lists in ActorDestroy.
AssertNotInPool();
// Normally mSubprocess is destroyed in ActorDestroy, but that won't
// happen if the process wasn't launched or if it failed to launch.
if (mSubprocess) {
MOZ_LOG(
ContentParent::GetLog(), LogLevel::Verbose,
("DestroySubprocess: ContentParent %p mSubprocess %p handle %" PRIuPTR,
this, mSubprocess,
mSubprocess ? (uintptr_t)mSubprocess->GetChildProcessHandle() : -1));
mSubprocess->Destroy();
}
}
bool ContentParent::InitInternal(ProcessPriority aInitialPriority) {
// We can't access the locale service after shutdown has started. Since we
// can't init the process without it, and since we're going to be canceling
// whatever load attempt that initiated this process creation anyway, just
// bail out now if shutdown has already started.
if (PastShutdownPhase(ShutdownPhase::XPCOMShutdown)) {
return false;
}
XPCOMInitData xpcomInit;
MOZ_LOG(ContentParent::GetLog(), LogLevel::Debug,
("ContentParent::InitInternal: %p", (void*)this));
nsCOMPtr<nsIIOService> io(do_GetIOService());
MOZ_ASSERT(io, "No IO service?");
DebugOnly<nsresult> 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<nsICaptivePortalService> cps =
do_GetService(NS_CAPTIVEPORTAL_CONTRACTID);
if (cps) {
cps->GetState(&xpcomInit.captivePortalState());
}
if (StaticPrefs::fission_processProfileName()) {
nsCOMPtr<nsIToolkitProfileService> profileSvc =
do_GetService(NS_PROFILESERVICE_CONTRACTID);
if (profileSvc) {
nsCOMPtr<nsIToolkitProfile> currentProfile;
nsresult rv =
profileSvc->GetCurrentProfile(getter_AddRefs(currentProfile));
if (NS_SUCCEEDED(rv) && currentProfile) {
currentProfile->GetName(mProfile);
}
}
}
nsIBidiKeyboard* bidi = nsContentUtils::GetBidiKeyboard();
xpcomInit.isLangRTL() = false;
xpcomInit.haveBidiKeyboards() = false;
if (bidi) {
bidi->IsLangRTL(&xpcomInit.isLangRTL());
bidi->GetHaveBidiKeyboards(&xpcomInit.haveBidiKeyboards());
}
RefPtr<mozSpellChecker> spellChecker(mozSpellChecker::Create());
MOZ_ASSERT(spellChecker, "No spell checker?");
spellChecker->GetDictionaryList(&xpcomInit.dictionaries());
LocaleService::GetInstance()->GetAppLocalesAsBCP47(xpcomInit.appLocales());
LocaleService::GetInstance()->GetRequestedLocales(
xpcomInit.requestedLocales());
L10nRegistry::GetParentProcessFileSourceDescriptors(
xpcomInit.l10nFileSources());
nsCOMPtr<nsIClipboard> clipboard(
do_GetService("@mozilla.org/widget/clipboard;1"));
MOZ_ASSERT(clipboard, "No clipboard?");
MOZ_ASSERT(
clipboard->IsClipboardTypeSupported(nsIClipboard::kGlobalClipboard),
"We should always support the global clipboard.");
xpcomInit.clipboardCaps().supportsSelectionClipboard() =
clipboard->IsClipboardTypeSupported(nsIClipboard::kSelectionClipboard);
xpcomInit.clipboardCaps().supportsFindClipboard() =
clipboard->IsClipboardTypeSupported(nsIClipboard::kFindClipboard);
xpcomInit.clipboardCaps().supportsSelectionCache() =
clipboard->IsClipboardTypeSupported(nsIClipboard::kSelectionCache);
// 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 (ParentProcessMessageManager* mm =
nsFrameMessageManager::sParentProcessManager) {
AutoJSAPI jsapi;
if (NS_WARN_IF(!jsapi.Init(xpc::PrivilegedJunkScope()))) {
MOZ_CRASH();
}
JS::Rooted<JS::Value> 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.
SystemFontList fontList;
gfxPlatform::GetPlatform()->ReadSystemFontList(&fontList);
const FullLookAndFeel& lnf = *RemoteLookAndFeel::ExtractData();
// If the shared fontlist is in use, collect its shmem block handles to pass
// to the child.
nsTArray<ReadOnlySharedMemoryHandle> sharedFontListBlocks;
gfxPlatformFontList::PlatformFontList()->ShareFontListToProcess(
&sharedFontListBlocks, OtherPid());
// Content processes have no permission to access profile directory, so we
// send the file URL instead.
auto* sheetCache = GlobalStyleSheetCache::Singleton();
if (StyleSheet* ucs = sheetCache->GetUserContentSheet()) {
xpcomInit.userContentSheetURL() = ucs->GetSheetURI();
} else {
xpcomInit.userContentSheetURL() = nullptr;
}
// 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<nsIGfxInfo> gfxInfo = components::GfxInfo::Service();
if (gfxInfo) {
GfxInfoBase* gfxInfoRaw = static_cast<GfxInfoBase*>(gfxInfo.get());
xpcomInit.gfxFeatureStatus() = gfxInfoRaw->GetAllFeatures();
}
// Send the dynamic scalar definitions to the new process.
TelemetryIPC::GetDynamicScalarDefinitions(xpcomInit.dynamicScalarDefs());
for (auto const& [location, supported] : sCodecsSupported) {
Unused << SendUpdateMediaCodecsSupported(location, supported);
}
// Must send screen info before send initialData
ScreenManager& screenManager = ScreenManager::GetSingleton();
screenManager.CopyScreensToRemote(this);
// Send the UA sheet shared memory buffer and the address it is mapped at.
Maybe<ReadOnlySharedMemoryHandle> sharedUASheetHandle;
uintptr_t sharedUASheetAddress = sheetCache->GetSharedMemoryAddress();
if (ReadOnlySharedMemoryHandle handle = sheetCache->CloneHandle()) {
sharedUASheetHandle.emplace(std::move(handle));
} else {
sharedUASheetAddress = 0;
}
bool isReadyForBackgroundProcessing = false;
#if defined(XP_WIN)
RefPtr<DllServices> dllSvc(DllServices::Get());
isReadyForBackgroundProcessing = dllSvc->IsReadyForBackgroundProcessing();
#endif
xpcomInit.perfStatsMask() = PerfStats::GetCollectionMask();
nsCOMPtr<nsIDNSService> dns = do_GetService(NS_DNSSERVICE_CONTRACTID);
dns->GetTrrDomain(xpcomInit.trrDomain());
nsIDNSService::ResolverMode mode;
dns->GetCurrentTrrMode(&mode);
xpcomInit.trrMode() = mode;
xpcomInit.trrModeFromPref() =
static_cast<nsIDNSService::ResolverMode>(StaticPrefs::network_trr_mode());
Unused << SendSetXPCOMProcessAttributes(
xpcomInit, initialData, lnf, fontList, std::move(sharedUASheetHandle),
sharedUASheetAddress, std::move(sharedFontListBlocks),
isReadyForBackgroundProcessing);
ipc::WritableSharedMap* sharedData =
nsFrameMessageManager::sParentProcessManager->SharedData();
sharedData->Flush();
sharedData->SendTo(this);
nsCOMPtr<nsIChromeRegistry> registrySvc = nsChromeRegistry::GetService();
nsChromeRegistryChrome* chromeRegistry =
static_cast<nsChromeRegistryChrome*>(registrySvc.get());
chromeRegistry->SendRegisteredChrome(this);
nsCOMPtr<nsIStringBundleService> stringBundleService =
components::StringBundle::Service();
stringBundleService->SendContentBundles(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);
nsCString sourceURL(gAppData->sourceURL);
nsCString updateURL(gAppData->updateURL);
// Sending all information to content process.
Unused << SendAppInfo(version, buildID, name, UAName, ID, vendor, sourceURL,
updateURL);
}
// 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, mProfile);
if (mRemoteType != PREALLOC_REMOTE_TYPE) {
StartRemoteWorkerService();
}
ScriptPreloader::InitContentChild(*this);
// Initialize the message manager (and load delayed scripts) now that we
// have established communications with the child.
mMessageManager->InitWithCallback(this);
mMessageManager->SetOsPid(Pid());
// 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<PCompositorManagerChild> compositor;
Endpoint<PImageBridgeChild> imageBridge;
Endpoint<PVRManagerChild> vrBridge;
Endpoint<PRemoteDecoderManagerChild> videoManager;
AutoTArray<uint32_t, 3> namespaces;
if (!gpm->CreateContentBridges(OtherEndpointProcInfo(), &compositor,
&imageBridge, &vrBridge, &videoManager,
mChildID, &namespaces)) {
// This can fail if we've already started shutting down the compositor
MOZ_ASSERT(AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdown));
return false;
}
Unused << SendInitRendering(std::move(compositor), std::move(imageBridge),
std::move(vrBridge), std::move(videoManager),
namespaces);
gpm->AddListener(this);
if (StaticPrefs::media_rdd_process_enabled()) {
// Ensure the RDD process has been started.
RDDProcessManager* rdd = RDDProcessManager::Get();
rdd->LaunchRDDProcess();
}
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()) {
Unused << SendLoadAndRegisterSheet(sheet->GetSheetURI(),
nsIStyleSheetService::AGENT_SHEET);
}
for (StyleSheet* sheet : *sheetService->UserStyleSheets()) {
Unused << SendLoadAndRegisterSheet(sheet->GetSheetURI(),
nsIStyleSheetService::USER_SHEET);
}
for (StyleSheet* sheet : *sheetService->AuthorStyleSheets()) {
Unused << SendLoadAndRegisterSheet(sheet->GetSheetURI(),
nsIStyleSheetService::AUTHOR_SHEET);
}
}
#ifdef MOZ_SANDBOX
bool shouldSandbox = true;
Maybe<FileDescriptor> brokerFd;
// 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. Always send SetProcessSandbox message on macOS.
# if !defined(XP_MACOSX)
shouldSandbox = IsContentSandboxEnabled();
# endif
# ifdef XP_LINUX
if (shouldSandbox) {
MOZ_ASSERT(!mSandboxBroker);
bool isFileProcess = mRemoteType == FILE_REMOTE_TYPE;
UniquePtr<SandboxBroker::Policy> policy =
sSandboxBrokerPolicyFactory->GetContentPolicy(Pid(), isFileProcess);
if (policy) {
brokerFd = Some(FileDescriptor());
mSandboxBroker =
SandboxBroker::Create(std::move(policy), Pid(), brokerFd.ref());
if (!mSandboxBroker) {
KillHard("SandboxBroker::Create failed");
return false;
}
MOZ_ASSERT(brokerFd.ref().IsValid());
}
}
# endif
if (shouldSandbox && !SendSetProcessSandbox(brokerFd)) {
KillHard("SandboxInitFailed");
}
#endif
// Ensure that the default set of permissions are avaliable in the content
// process before we try to load any URIs in it.
//
// NOTE: All default permissions has to be transmitted to the child process
EnsurePermissionsByKey(""_ns, ""_ns);
{
nsTArray<BlobURLRegistrationData> registrations;
BlobURLProtocolHandler::ForEachBlobURL([&](BlobImpl* aBlobImpl,
nsIPrincipal* aPrincipal,
const nsCString& aPartitionKey,
const nsACString& aURI,
bool aRevoked) {
// We send all moz-extension Blob URL's to all content processes
// because content scripts mean that a moz-extension can live in any
// process. Same thing for system principal Blob URLs. Content Blob
// URL's are sent for content principals on-demand by
// AboutToLoadHttpDocumentForChild and RemoteWorkerManager.
if (!BlobURLProtocolHandler::IsBlobURLBroadcastPrincipal(aPrincipal)) {
return true;
}
IPCBlob ipcBlob;
nsresult rv = IPCBlobUtils::Serialize(aBlobImpl, ipcBlob);
if (NS_WARN_IF(NS_FAILED(rv))) {
return false;
}
registrations.AppendElement(BlobURLRegistrationData(
nsCString(aURI), ipcBlob, WrapNotNull(aPrincipal),
nsCString(aPartitionKey), aRevoked));
rv = TransmitPermissionsForPrincipal(aPrincipal);
Unused << NS_WARN_IF(NS_FAILED(rv));
return true;
});
if (!registrations.IsEmpty()) {
Unused << SendInitBlobURLs(registrations);
}
}
// Send down { Parent, Window }ActorOptions at startup to content process.
RefPtr<JSActorService> actorSvc = JSActorService::GetSingleton();
if (actorSvc) {
nsTArray<JSProcessActorInfo> contentInfos;
actorSvc->GetJSProcessActorInfos(contentInfos);
nsTArray<JSWindowActorInfo> windowInfos;
actorSvc->GetJSWindowActorInfos(windowInfos);
Unused << SendInitJSActorInfos(contentInfos, windowInfos);
}
// Begin subscribing to any BrowsingContextGroups which were hosted by this
// process before it finished launching.
for (const auto& group : mGroups) {
group->Subscribe(this);
}
MaybeEnableRemoteInputEventQueue();
return true;
}
bool ContentParent::IsAlive() const {
return mLifecycleState == LifecycleState::ALIVE ||
mLifecycleState == LifecycleState::INITIALIZED;
}
bool ContentParent::IsInitialized() const {
return mLifecycleState == LifecycleState::INITIALIZED;
}
int32_t ContentParent::Pid() const {
if (!mSubprocess) {
return -1;
}
auto pid = mSubprocess->GetChildProcessId();
if (pid == 0) {
return -1;
}
return ReleaseAssertedCast<int32_t>(pid);
}
void ContentParent::OnCompositorUnexpectedShutdown() {
GPUProcessManager* gpm = GPUProcessManager::Get();
Endpoint<PCompositorManagerChild> compositor;
Endpoint<PImageBridgeChild> imageBridge;
Endpoint<PVRManagerChild> vrBridge;
Endpoint<PRemoteDecoderManagerChild> videoManager;
AutoTArray<uint32_t, 3> namespaces;
if (!gpm->CreateContentBridges(OtherEndpointProcInfo(), &compositor,
&imageBridge, &vrBridge, &videoManager,
mChildID, &namespaces)) {
MOZ_ASSERT(AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdown));
return;
}
Unused << SendReinitRendering(std::move(compositor), std::move(imageBridge),
std::move(vrBridge), std::move(videoManager),
namespaces);
}
void ContentParent::OnCompositorDeviceReset() {
Unused << SendReinitRenderingForDeviceReset();
}
void ContentParent::MaybeEnableRemoteInputEventQueue() {
MOZ_ASSERT(!mIsRemoteInputEventQueueEnabled);
mIsRemoteInputEventQueueEnabled = true;
Unused << SendSetInputEventQueueEnabled();
SetInputPriorityEventEnabled(true);
}
void ContentParent::SetInputPriorityEventEnabled(bool aEnabled) {
if (!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();
}
void ContentParent::OnVarChanged(const GfxVarUpdate& aVar) {
if (!CanSend()) {
return;
}
Unused << SendVarUpdate(aVar);
}
mozilla::ipc::IPCResult ContentParent::RecvSetClipboard(
const IPCTransferable& aTransferable,
const nsIClipboard::ClipboardType& aWhichClipboard,
const MaybeDiscarded<WindowContext>& aRequestingWindowContext) {
// aRequestingPrincipal is allowed to be nullptr here.
if (!ValidatePrincipal(aTransferable.dataPrincipal(),
{ValidatePrincipalOptions::AllowNullPtr,
ValidatePrincipalOptions::AllowExpanded,
ValidatePrincipalOptions::AllowSystem})) {
LogAndAssertFailedPrincipalValidationInfo(aTransferable.dataPrincipal(),
__func__);
}
nsresult rv;
nsCOMPtr<nsIClipboard> clipboard(do_GetService(kCClipboardCID, &rv));
NS_ENSURE_SUCCESS(rv, IPC_OK());
nsCOMPtr<nsITransferable> trans =
do_CreateInstance("@mozilla.org/widget/transferable;1", &rv);
NS_ENSURE_SUCCESS(rv, IPC_OK());
trans->Init(nullptr);
rv = nsContentUtils::IPCTransferableToTransferable(
aTransferable, true /* aAddDataFlavor */, trans,
true /* aFilterUnknownFlavors */);
NS_ENSURE_SUCCESS(rv, IPC_OK());
// OK if this is null
RefPtr<WindowGlobalParent> window;
if (!aRequestingWindowContext.IsDiscarded()) {
window = aRequestingWindowContext.get_canonical();
}
clipboard->SetData(trans, nullptr, aWhichClipboard, window);
return IPC_OK();
}
/* static */ Result<nsCOMPtr<nsITransferable>, nsresult>
ContentParent::CreateClipboardTransferable(const nsTArray<nsCString>& aTypes) {
nsresult rv;
nsCOMPtr<nsITransferable> trans =
do_CreateInstance("@mozilla.org/widget/transferable;1", &rv);
if (NS_FAILED(rv)) {
return Err(rv);
}
MOZ_TRY(trans->Init(nullptr));
// The private flag is only used to prevent the data from being cached to the
// disk. The flag is not exported to the IPCDataTransfer object.
// The flag is set because we are not sure whether the clipboard data is used
// in a private browsing context. The transferable is only used in this scope,
// so the cache would not reduce memory consumption anyway.
trans->SetIsPrivateData(true);
// Fill out flavors for transferable
for (uint32_t t = 0; t < aTypes.Length(); t++) {
MOZ_TRY(trans->AddDataFlavor(aTypes[t].get()));
}
return std::move(trans);
}
mozilla::ipc::IPCResult ContentParent::RecvGetClipboard(
nsTArray<nsCString>&& aTypes,
const nsIClipboard::ClipboardType& aWhichClipboard,
const MaybeDiscarded<WindowContext>& aRequestingWindowContext,
IPCTransferableDataOrError* aTransferableDataOrError) {
nsresult rv;
// We expect content processes to always pass a non-null window so Content
// Analysis can analyze it. (if Content Analysis is active)
// There may be some cases when a window is closing, etc., in
// which case returning no clipboard content should not be a problem.
if (aRequestingWindowContext.IsDiscarded()) {
NS_WARNING(
"discarded window passed to RecvGetClipboard(); returning no clipboard "
"content");
*aTransferableDataOrError = NS_ERROR_FAILURE;
return IPC_OK();
}
if (aRequestingWindowContext.IsNull()) {
return IPC_FAIL(this, "passed null window to RecvGetClipboard()");
}
RefPtr<WindowGlobalParent> window = aRequestingWindowContext.get_canonical();
// Retrieve clipboard
nsCOMPtr<nsIClipboard> clipboard(do_GetService(kCClipboardCID, &rv));
if (NS_FAILED(rv)) {
*aTransferableDataOrError = rv;
return IPC_OK();
}
// Create transferable
auto result = CreateClipboardTransferable(aTypes);
if (result.isErr()) {
*aTransferableDataOrError = result.unwrapErr();
return IPC_OK();
}
// Get data from clipboard
nsCOMPtr<nsITransferable> trans = result.unwrap();
rv = clipboard->GetData(trans, aWhichClipboard, window);
if (NS_FAILED(rv)) {
*aTransferableDataOrError = rv;
return IPC_OK();
}
IPCTransferableData transferableData;
nsContentUtils::TransferableToIPCTransferableData(
trans, &transferableData, true /* aInSyncMessage */, this);
*aTransferableDataOrError = std::move(transferableData);
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvEmptyClipboard(
const nsIClipboard::ClipboardType& aWhichClipboard) {
nsresult rv;
nsCOMPtr<nsIClipboard> clipboard(do_GetService(kCClipboardCID, &rv));
NS_ENSURE_SUCCESS(rv, IPC_OK());
clipboard->EmptyClipboard(aWhichClipboard);
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvClipboardHasType(
nsTArray<nsCString>&& aTypes,
const nsIClipboard::ClipboardType& aWhichClipboard, bool* aHasType) {
nsresult rv;
nsCOMPtr<nsIClipboard> clipboard(do_GetService(kCClipboardCID, &rv));
NS_ENSURE_SUCCESS(rv, IPC_OK());
clipboard->HasDataMatchingFlavors(aTypes, aWhichClipboard, aHasType);
return IPC_OK();
}
namespace {
static Result<ClipboardReadRequest, nsresult> CreateClipboardReadRequest(
ContentParent& aContentParent,
nsIClipboardDataSnapshot& aClipboardDataSnapshot) {
nsTArray<nsCString> flavors;
nsresult rv = aClipboardDataSnapshot.GetFlavorList(flavors);
if (NS_FAILED(rv)) {
return Err(rv);
}
auto requestParent = MakeNotNull<RefPtr<ClipboardReadRequestParent>>(
&aContentParent, &aClipboardDataSnapshot);
// Open a remote endpoint for our PClipboardReadRequest actor.
ManagedEndpoint<PClipboardReadRequestChild> childEndpoint =
aContentParent.OpenPClipboardReadRequestEndpoint(requestParent);
if (NS_WARN_IF(!childEndpoint.IsValid())) {
return Err(NS_ERROR_FAILURE);
}
return ClipboardReadRequest(std::move(childEndpoint), std::move(flavors));
}
class ClipboardGetCallback final : public nsIClipboardGetDataSnapshotCallback {
public:
ClipboardGetCallback(
ContentParent* aContentParent,
ContentParent::GetClipboardDataSnapshotResolver&& aResolver)
: mContentParent(aContentParent), mResolver(std::move(aResolver)) {}
// This object will never be held by a cycle-collected object, so it doesn't
// need to be cycle-collected despite holding alive cycle-collected objects.
NS_DECL_ISUPPORTS
// nsIClipboardGetDataSnapshotCallback
NS_IMETHOD OnSuccess(
nsIClipboardDataSnapshot* aClipboardDataSnapshot) override {
MOZ_ASSERT(mContentParent);
MOZ_ASSERT(aClipboardDataSnapshot);
auto result =
CreateClipboardReadRequest(*mContentParent, *aClipboardDataSnapshot);
if (result.isErr()) {
return OnError(result.unwrapErr());
}
mResolver(result.unwrap());
return NS_OK;
}
NS_IMETHOD OnError(nsresult aResult) override {
mResolver(aResult);
return NS_OK;
}
protected:
~ClipboardGetCallback() = default;
RefPtr<ContentParent> mContentParent;
ContentParent::GetClipboardDataSnapshotResolver mResolver;
};
NS_IMPL_ISUPPORTS(ClipboardGetCallback, nsIClipboardGetDataSnapshotCallback)
} // namespace
mozilla::ipc::IPCResult ContentParent::RecvGetClipboardDataSnapshot(
nsTArray<nsCString>&& aTypes,
const nsIClipboard::ClipboardType& aWhichClipboard,
const MaybeDiscarded<WindowContext>& aRequestingWindowContext,
mozilla::NotNull<nsIPrincipal*> aRequestingPrincipal,
GetClipboardDataSnapshotResolver&& aResolver) {
if (!ValidatePrincipal(aRequestingPrincipal,
{ValidatePrincipalOptions::AllowSystem,
ValidatePrincipalOptions::AllowExpanded})) {
LogAndAssertFailedPrincipalValidationInfo(aRequestingPrincipal, __func__);
}
// If the requesting context has been discarded, cancel the paste.
if (aRequestingWindowContext.IsDiscarded()) {
aResolver(NS_ERROR_NOT_AVAILABLE);
return IPC_OK();
}
RefPtr<WindowGlobalParent> requestingWindow =
aRequestingWindowContext.get_canonical();
if (requestingWindow && requestingWindow->GetContentParent() != this) {
return IPC_FAIL(
this, "attempt to paste into WindowContext loaded in another process");
}
nsresult rv;
// Retrieve clipboard
nsCOMPtr<nsIClipboard> clipboard(do_GetService(kCClipboardCID, &rv));
if (NS_FAILED(rv)) {
aResolver(rv);
return IPC_OK();
}
auto callback = MakeRefPtr<ClipboardGetCallback>(this, std::move(aResolver));
rv = clipboard->GetDataSnapshot(aTypes, aWhichClipboard, requestingWindow,
aRequestingPrincipal, callback);
if (NS_FAILED(rv)) {
callback->OnError(rv);
return IPC_OK();
}
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvGetClipboardDataSnapshotSync(
nsTArray<nsCString>&& aTypes,
const nsIClipboard::ClipboardType& aWhichClipboard,
const MaybeDiscarded<WindowContext>& aRequestingWindowContext,
ClipboardReadRequestOrError* aRequestOrError) {
// If the requesting context has been discarded, cancel the paste.
if (aRequestingWindowContext.IsDiscarded()) {
*aRequestOrError = NS_ERROR_FAILURE;
return IPC_OK();
}
RefPtr<WindowGlobalParent> requestingWindow =
aRequestingWindowContext.get_canonical();
if (requestingWindow && requestingWindow->GetContentParent() != this) {
return IPC_FAIL(
this, "attempt to paste into WindowContext loaded in another process");
}
nsCOMPtr<nsIClipboard> clipboard(do_GetService(kCClipboardCID));
if (!clipboard) {
*aRequestOrError = NS_ERROR_FAILURE;
return IPC_OK();
}
nsCOMPtr<nsIClipboardDataSnapshot> clipboardDataSnapshot;
nsresult rv =
clipboard->GetDataSnapshotSync(aTypes, aWhichClipboard, requestingWindow,
getter_AddRefs(clipboardDataSnapshot));
if (NS_FAILED(rv)) {
*aRequestOrError = rv;
return IPC_OK();
}
auto result = CreateClipboardReadRequest(*this, *clipboardDataSnapshot);
if (result.isErr()) {
*aRequestOrError = result.unwrapErr();
return IPC_OK();
}
*aRequestOrError = result.unwrap();
return IPC_OK();
}
already_AddRefed<PClipboardWriteRequestParent>
ContentParent::AllocPClipboardWriteRequestParent(
const nsIClipboard::ClipboardType& aClipboardType,
const MaybeDiscarded<WindowContext>& aSettingWindowContext) {
WindowContext* settingWindowContext = nullptr;
if (!aSettingWindowContext.IsDiscarded()) {
settingWindowContext = aSettingWindowContext.get();
}
RefPtr<ClipboardWriteRequestParent> request =
MakeAndAddRef<ClipboardWriteRequestParent>(this);
request->Init(aClipboardType, settingWindowContext);
return request.forget();
}
mozilla::ipc::IPCResult ContentParent::RecvGetIconForExtension(
const nsACString& aFileExt, const uint32_t& aIconSize,
nsTArray<uint8_t>* 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::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.
if (mIsAPreallocBlocker) {
MOZ_LOG(
ContentParent::GetLog(), LogLevel::Verbose,
("RecvFirstIdle %p: Removing Blocker for %s", this, mRemoteType.get()));
PreallocatedProcessManager::RemoveBlocker(mRemoteType, this);
mIsAPreallocBlocker = false;
}
return IPC_OK();
}
already_AddRefed<nsDocShellLoadState> ContentParent::TakePendingLoadStateForId(
uint64_t aLoadIdentifier) {
return mPendingLoadStates.Extract(aLoadIdentifier).valueOr(nullptr).forget();
}
void ContentParent::StorePendingLoadState(nsDocShellLoadState* aLoadState) {
MOZ_DIAGNOSTIC_ASSERT(
!mPendingLoadStates.Contains(aLoadState->GetLoadIdentifier()),
"The same nsDocShellLoadState was sent to the same content process "
"twice? This will mess with cross-process tracking of loads");
mPendingLoadStates.InsertOrUpdate(aLoadState->GetLoadIdentifier(),
aLoadState);
}
mozilla::ipc::IPCResult ContentParent::RecvCleanupPendingLoadState(
uint64_t aLoadIdentifier) {
mPendingLoadStates.Remove(aLoadIdentifier);
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_CONCRETE(ContentParent)
NS_INTERFACE_MAP_ENTRY(nsIDOMProcessParent)
NS_INTERFACE_MAP_ENTRY(nsIObserver)
NS_INTERFACE_MAP_ENTRY(nsIDOMGeoPositionCallback)
NS_INTERFACE_MAP_ENTRY(nsIDOMGeoPositionErrorCallback)
NS_INTERFACE_MAP_ENTRY(nsIAsyncShutdownBlocker)
NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMProcessParent)
NS_INTERFACE_MAP_END
class RequestContentJSInterruptRunnable final : public Runnable {
public:
explicit RequestContentJSInterruptRunnable(PProcessHangMonitorParent* aActor)
: Runnable("dom::RequestContentJSInterruptRunnable"),
mHangMonitorActor(aActor) {}
NS_IMETHOD Run() override {
MOZ_ASSERT(mHangMonitorActor);
Unused << mHangMonitorActor->SendRequestContentJSInterrupt();
return NS_OK;
}
private:
// The end-of-life of ContentParent::mHangMonitorActor is bound to
// ContentParent::ActorDestroy and then HangMonitorParent::Shutdown
// dispatches a shutdown runnable to this queue and waits for it to be
// executed. So the runnable needs not to care about keeping it alive,
// as it is surely dispatched earlier than the
// HangMonitorParent::ShutdownOnThread.
RefPtr<PProcessHangMonitorParent> mHangMonitorActor;
};
void ContentParent::SignalImpendingShutdownToContentJS() {
if (!mIsSignaledImpendingShutdown &&
!AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdown)) {
MaybeLogBlockShutdownDiagnostics(
this, "BlockShutdown: NotifyImpendingShutdown.", __FILE__, __LINE__);
NotifyImpendingShutdown();
mIsSignaledImpendingShutdown = true;
if (mHangMonitorActor &&
StaticPrefs::dom_abort_script_on_child_shutdown()) {
MaybeLogBlockShutdownDiagnostics(
this, "BlockShutdown: RequestContentJSInterrupt.", __FILE__,
__LINE__);
RefPtr<RequestContentJSInterruptRunnable> r =
new RequestContentJSInterruptRunnable(mHangMonitorActor);
ProcessHangMonitor::Get()->Dispatch(r.forget());
}
}
}
// Async shutdown blocker
NS_IMETHODIMP
ContentParent::BlockShutdown(nsIAsyncShutdownClient* aClient) {
if (!AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdown)) {
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
mBlockShutdownCalled = true;
#endif
// This will make our process unusable for normal content, so we need to
// ensure we won't get re-used by GetUsedBrowserProcess as we have not yet
// done MarkAsDead.
PreallocatedProcessManager::Erase(this);
{
RecursiveMutexAutoLock lock(mThreadsafeHandle->mMutex);
mThreadsafeHandle->mShutdownStarted = true;
}
// Our real shutdown has not yet started. Just notify the impending
// shutdown and eventually cancel content JS.
SignalImpendingShutdownToContentJS();
if (sAppShutdownConfirmedClient) {
Unused << sAppShutdownConfirmedClient->RemoveBlocker(this);
}
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
mBlockShutdownCalled = false;
#endif
return NS_OK;
}
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
// We register two final shutdown blockers and both would call us, but if
// things go well we will unregister both as (delayed) reaction to the first
// call we get and thus never receive a second call. Thus we believe that we
// will get called only once except for quit-application-granted, which is
// handled above.
MOZ_ASSERT(!mBlockShutdownCalled);
mBlockShutdownCalled = true;
#endif
if (CanSend()) {
MaybeLogBlockShutdownDiagnostics(this, "BlockShutdown: CanSend.", __FILE__,
__LINE__);
// Make sure that our process will get scheduled.
ProcessPriorityManager::SetProcessPriority(this,
PROCESS_PRIORITY_FOREGROUND);
// The normal shutdown sequence is to send a shutdown message
// to the child and then just wait for ActorDestroy which will
// cleanup everything and remove our blockers.
if (!ShutDownProcess(SEND_SHUTDOWN_MESSAGE)) {
KillHard("Failed to send Shutdown message. Destroying the process...");
return NS_OK;
}
} else if (IsLaunching()) {
MaybeLogBlockShutdownDiagnostics(
this, "BlockShutdown: !CanSend && IsLaunching.", __FILE__, __LINE__);
// If we get here while we are launching, we must wait for the child to
// be able to react on our commands. Mark this process as dead. This
// will make bail out LaunchSubprocessResolve and kick off the normal
// shutdown sequence.
MarkAsDead();
} else {
MOZ_ASSERT(IsDead());
if (!IsDead()) {
MaybeLogBlockShutdownDiagnostics(
this, "BlockShutdown: !!! !CanSend && !IsLaunching && !IsDead !!!",
__FILE__, __LINE__);
} else {
MaybeLogBlockShutdownDiagnostics(
this, "BlockShutdown: !CanSend && !IsLaunching && IsDead.", __FILE__,
__LINE__);
}
// Nothing left we can do. We must assume that we race with an ongoing
// process shutdown, such that we can expect our shutdown blockers to be
// removed normally.
}
return NS_OK;
}
NS_IMETHODIMP
ContentParent::GetName(nsAString& aName) {
aName.AssignLiteral("ContentParent:");
aName.AppendPrintf(" id=%p", this);
return NS_OK;
}
NS_IMETHODIMP
ContentParent::GetState(nsIPropertyBag** aResult) {
auto props = MakeRefPtr<nsHashPropertyBag>();
props->SetPropertyAsACString(u"remoteTypePrefix"_ns,
RemoteTypePrefix(mRemoteType));
*aResult = props.forget().downcast<nsIWritablePropertyBag>().take();
return NS_OK;
}
static void InitShutdownClients() {
if (!sXPCOMShutdownClient) {
nsresult rv;
nsCOMPtr<nsIAsyncShutdownService> svc = services::GetAsyncShutdownService();
if (!svc) {
return;
}
nsCOMPtr<nsIAsyncShutdownClient> client;
// TODO: It seems as if getPhase from AsyncShutdown.sys.mjs does not check
if (!AppShutdown::IsInOrBeyond(ShutdownPhase::XPCOMWillShutdown)) {
rv = svc->GetXpcomWillShutdown(getter_AddRefs(client));
if (NS_SUCCEEDED(rv)) {
sXPCOMShutdownClient = client.forget();
ClearOnShutdown(&sXPCOMShutdownClient);
}
}
if (!AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdown)) {
rv = svc->GetProfileBeforeChange(getter_AddRefs(client));
if (NS_SUCCEEDED(rv)) {
sProfileBeforeChangeClient = client.forget();
ClearOnShutdown(&sProfileBeforeChangeClient);
}
}
if (!AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdownConfirmed)) {
rv = svc->GetAppShutdownConfirmed(getter_AddRefs(client));
if (NS_SUCCEEDED(rv)) {
sAppShutdownConfirmedClient = client.forget();
ClearOnShutdown(&sAppShutdownConfirmedClient);
}
}
}
}
void ContentParent::AddShutdownBlockers() {
InitShutdownClients();
MOZ_ASSERT(sXPCOMShutdownClient);
MOZ_ASSERT(sProfileBeforeChangeClient);
if (sXPCOMShutdownClient) {
sXPCOMShutdownClient->AddBlocker(
this, NS_LITERAL_STRING_FROM_CSTRING(__FILE__), __LINE__, u""_ns);
}
if (sProfileBeforeChangeClient) {
sProfileBeforeChangeClient->AddBlocker(
this, NS_LITERAL_STRING_FROM_CSTRING(__FILE__), __LINE__, u""_ns);
}
if (sAppShutdownConfirmedClient) {
sAppShutdownConfirmedClient->AddBlocker(
this, NS_LITERAL_STRING_FROM_CSTRING(__FILE__), __LINE__, u""_ns);
}
}
void ContentParent::RemoveShutdownBlockers() {
MOZ_ASSERT(sXPCOMShutdownClient);
MOZ_ASSERT(sProfileBeforeChangeClient);
MaybeLogBlockShutdownDiagnostics(this, "RemoveShutdownBlockers", __FILE__,
__LINE__);
#ifdef MOZ_DIAGNOSTIC_ASSERT_ENABLED
mBlockShutdownCalled = false;
#endif
if (sXPCOMShutdownClient) {
Unused << sXPCOMShutdownClient->RemoveBlocker(this);
}
if (sProfileBeforeChangeClient) {
Unused << sProfileBeforeChangeClient->RemoveBlocker(this);
}
if (sAppShutdownConfirmedClient) {
Unused << sAppShutdownConfirmedClient->RemoveBlocker(this);
}
}
NS_IMETHODIMP
ContentParent::Observe(nsISupports* aSubject, const char* aTopic,
const char16_t* aData) {
if (IsDead() || !mSubprocess) {
return NS_OK;
}
if (!strcmp(aTopic, "nsPref:changed")) {
// We know prefs are ASCII here.
NS_LossyConvertUTF16toASCII strData(aData);
Pref pref(strData, /* isLocked */ false,
/* isSanitized */ false, Nothing(), Nothing());
Preferences::GetPreference(&pref, GeckoProcessType_Content,
GetRemoteType());
// This check is a bit of a hack. We want to avoid sending excessive
// preference updates to subprocesses for performance reasons, but we
// We're going to hijack the sanitization mechanism to accomplish our goal
// but it imposes the following complications:
// 1) It doesn't avoid sending anything to other (non-web-content)
// subprocesses so we're not getting any perf gains there
// 2) It confuses the subprocesses w.r.t. sanitization. The point of
// sending a preference update of a sanitized preference is so that
// content process knows when it's asked to resolve a sanitized
// preference, and it can send telemetry and/or crash. With this
// change, a sanitized pref that is created during the browser session
// will not be sent to the content process, and therefore the content
// process won't know it should telemetry/crash on access - it'll just
// silently fail to resolve it. After browser restart, the sanitized
// pref will be populated into the content process via the shared pref
// map and _then_ if it is accessed, the content process will crash.
// We're seeing good telemetry/crash rates right now, so we're okay with
// this limitation.
if (pref.isSanitized()) {
return NS_OK;
}
if (IsInitialized()) {
MOZ_ASSERT(mQueuedPrefs.IsEmpty());
if (!SendPreferenceUpdate(pref)) {
return NS_ERROR_NOT_AVAILABLE;
}
} else {
MOZ_ASSERT(!IsDead());
mQueuedPrefs.AppendElement(pref);
}
return NS_OK;
}
if (!IsAlive()) {
return NS_OK;
}
// listening for memory pressure event
if (!strcmp(aTopic, "memory-pressure")) {
Unused << SendFlushMemory(nsDependentString(aData));
} else if (!strcmp(aTopic, "application-background")) {
Unused << SendApplicationBackground();
} else if (!strcmp(aTopic, "application-foreground")) {
Unused << SendApplicationForeground();
} else if (!strcmp(aTopic, NS_IPC_IOSERVICE_SET_OFFLINE_TOPIC)) {
NS_ConvertUTF16toUTF8 dataStr(aData);
const char* offline = dataStr.get();
if (!SendSetOffline(!strcmp(offline, "true"))) {
return NS_ERROR_NOT_AVAILABLE;
}
} else if (!strcmp(aTopic, NS_IPC_IOSERVICE_SET_CONNECTIVITY_TOPIC)) {
if (!SendSetConnectivity(u"true"_ns.Equals(aData))) {
return NS_ERROR_NOT_AVAILABLE;
}
} else if (!strcmp(aTopic, NS_IPC_CAPTIVE_PORTAL_SET_STATE)) {
nsCOMPtr<nsICaptivePortalService> 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;
}
} 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.
Unused << SendActivateA11y(
nsAccessibilityService::GetActiveCacheDomains());
} 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<nsCString> appLocales;
LocaleService::GetInstance()->GetAppLocalesAsBCP47(appLocales);
Unused << SendUpdateAppLocales(appLocales);
} else if (!strcmp(aTopic, "intl:requested-locales-changed")) {
nsTArray<nsCString> requestedLocales;
LocaleService::GetInstance()->GetRequestedLocales(requestedLocales);
Unused << SendUpdateRequestedLocales(requestedLocales);
} else if (!strcmp(aTopic, "cookie-changed") ||
!strcmp(aTopic, "private-cookie-changed")) {
MOZ_ASSERT(aSubject, "cookie changed notification must have subject.");
nsCOMPtr<nsICookieNotification> notification = do_QueryInterface(aSubject);
MOZ_ASSERT(notification,
"cookie changed notification must have nsICookieNotification.");
nsICookieNotification::Action action = notification->GetAction();
PNeckoParent* neckoParent = LoneManagedOrNullAsserts(ManagedPNeckoParent());
if (!neckoParent) {
return NS_OK;
}
PCookieServiceParent* csParent =
LoneManagedOrNullAsserts(neckoParent->ManagedPCookieServiceParent());
if (!csParent) {
return NS_OK;
}
auto* cs = static_cast<CookieServiceParent*>(csParent);
MOZ_ASSERT(mCookieInContentListCache.IsEmpty());
if (action == nsICookieNotification::COOKIES_BATCH_DELETED) {
nsCOMPtr<nsIArray> cookieList;
DebugOnly<nsresult> rv =
notification->GetBatchDeletedCookies(getter_AddRefs(cookieList));
NS_ASSERTION(NS_SUCCEEDED(rv) && cookieList, "couldn't get cookie list");
cs->RemoveBatchDeletedCookies(cookieList);
return NS_OK;
}
if (action == nsICookieNotification::ALL_COOKIES_CLEARED) {
cs->RemoveAll();
return NS_OK;
}
// Do not push these cookie updates to the same process they originated
// from.
if (cs->ProcessingCookie()) {
return NS_OK;
}
nsCOMPtr<nsICookie> xpcCookie;
nsresult rv = notification->GetCookie(getter_AddRefs(xpcCookie));
NS_ASSERTION(NS_SUCCEEDED(rv) && xpcCookie, "couldn't get cookie");
// only broadcast the cookie change to content processes that need it
const Cookie& cookie = xpcCookie->AsCookie();
// do not send cookie if content process does not have similar cookie
if (!cs->ContentProcessHasCookie(cookie)) {
return NS_OK;
}
nsID* operationID = nullptr;
rv = notification->GetOperationID(&operationID);
if (NS_WARN_IF(NS_FAILED(rv))) {
return NS_OK;
}
if (action == nsICookieNotification::COOKIE_DELETED) {
cs->RemoveCookie(cookie, operationID);
} else if (action == nsICookieNotification::COOKIE_ADDED ||
action == nsICookieNotification::COOKIE_CHANGED) {
cs->AddCookie(cookie, operationID);
}
} else if (!strcmp(aTopic, NS_NETWORK_LINK_TYPE_TOPIC)) {
UpdateNetworkLinkType();
} else if (!strcmp(aTopic, "network:socket-process-crashed")) {
Unused << SendSocketProcessCrashed();
} else if (!strcmp(aTopic, DEFAULT_TIMEZONE_CHANGED_OBSERVER_TOPIC)) {
Unused << SendSystemTimezoneChanged();
} else if (!strcmp(aTopic, NS_NETWORK_TRR_MODE_CHANGED_TOPIC)) {
nsCOMPtr<nsIDNSService> dns = do_GetService(NS_DNSSERVICE_CONTRACTID);
nsIDNSService::ResolverMode mode;
dns->GetCurrentTrrMode(&mode);
nsIDNSService::ResolverMode modeFromPref =
static_cast<nsIDNSService::ResolverMode>(
StaticPrefs::network_trr_mode());
if (modeFromPref > nsIDNSService::MODE_TRROFF) {
modeFromPref = nsIDNSService::MODE_TRROFF;
}
Unused << SendSetTRRMode(mode, modeFromPref);
}
return NS_OK;
}
void ContentParent::UpdateNetworkLinkType() {
nsresult rv;
nsCOMPtr<nsINetworkLinkService> nls =
do_GetService(NS_NETWORK_LINK_SERVICE_CONTRACTID, &rv);
if (NS_FAILED(rv)) {
return;
}
uint32_t linkType = nsINetworkLinkService::LINK_TYPE_UNKNOWN;
rv = nls->GetLinkType(&linkType);
if (NS_FAILED(rv)) {
return;
}
Unused << SendNetworkLinkTypeChange(linkType);
}
NS_IMETHODIMP
ContentParent::GetInterface(const nsIID& aIID, void** aResult) {
NS_ENSURE_ARG_POINTER(aResult);
if (aIID.Equals(NS_GET_IID(nsIMessageSender))) {
nsCOMPtr<nsIMessageSender> mm = GetMessageManager();
mm.forget(aResult);
return NS_OK;
}
return NS_NOINTERFACE;
}
mozilla::ipc::IPCResult ContentParent::RecvInitBackground(
Endpoint<PBackgroundStarterParent>&& aEndpoint) {
if (!BackgroundParent::AllocStarter(this, std::move(aEndpoint))) {
NS_WARNING("BackgroundParent::Alloc failed");
}
return IPC_OK();
}
bool ContentParent::CanOpenBrowser(const IPCTabContext& aContext) {
// (PopupIPCTabContext lets the child process prove that it has access to
// the app it's trying to open.)
// On e10s we also allow UnsafeTabContext to allow service workers to open
// windows. This is enforced in MaybeInvalidTabContext.
if (aContext.type() != IPCTabContext::TPopupIPCTabContext) {
MOZ_CRASH_UNLESS_FUZZING(
"Unexpected IPCTabContext type. Aborting AllocPBrowserParent.");
return false;
}
if (aContext.type() == IPCTabContext::TPopupIPCTabContext) {
const PopupIPCTabContext& popupContext = aContext.get_PopupIPCTabContext();
auto* opener = BrowserParent::GetFrom(popupContext.opener().AsParent());
if (!opener) {
MOZ_CRASH_UNLESS_FUZZING(
"Got null opener from child; aborting AllocPBrowserParent.");
return false;
}
}
MaybeInvalidTabContext tc(aContext);
if (!tc.IsValid()) {
NS_ERROR(nsPrintfCString("Child passed us an invalid TabContext. (%s) "
"Aborting AllocPBrowserParent.",
tc.GetInvalidReason())
.get());
return false;
}
return true;
}
static bool CloneIsLegal(ContentParent* aCp, CanonicalBrowsingContext& aSource,
CanonicalBrowsingContext& aTarget) {
// Source and target must be in the same BCG
if (NS_WARN_IF(aSource.Group() != aTarget.Group())) {
return false;
}
// The source and target must be in different toplevel <browser>s
if (NS_WARN_IF(aSource.Top() == aTarget.Top())) {
return false;
}
// Neither source nor target must be toplevel.
if (NS_WARN_IF(aSource.IsTop()) || NS_WARN_IF(aTarget.IsTop())) {
return false;
}
// Both should be embedded by the same process.
auto* sourceEmbedder = aSource.GetParentWindowContext();
if (NS_WARN_IF(!sourceEmbedder) ||
NS_WARN_IF(sourceEmbedder->GetContentParent() != aCp)) {
return false;
}
auto* targetEmbedder = aTarget.GetParentWindowContext();
if (NS_WARN_IF(!targetEmbedder) ||
NS_WARN_IF(targetEmbedder->GetContentParent() != aCp)) {
return false;
}
// All seems sane.
return true;
}
mozilla::ipc::IPCResult ContentParent::RecvCloneDocumentTreeInto(
const MaybeDiscarded<BrowsingContext>& aSource,
const MaybeDiscarded<BrowsingContext>& aTarget, PrintData&& aPrintData) {
if (aSource.IsNullOrDiscarded() || aTarget.IsNullOrDiscarded()) {
return IPC_OK();
}
if (AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdownConfirmed)) {
// All existing processes have potentially been slated for removal already,
// such that any subsequent call to GetNewOrUsedLaunchingBrowserProcess
// (normally supposed to find an existing process here) will try to create
// a new process (but fail) that nobody would ever really use. Let's avoid
// this together with the expensive CloneDocumentTreeInto operation.
return IPC_OK();
}
RefPtr source = aSource.get_canonical();
RefPtr target = aTarget.get_canonical();
if (!CloneIsLegal(this, *source, *target)) {
return IPC_FAIL(this, "Illegal subframe clone");
}
ContentParent* cp = source->GetContentParent();
if (NS_WARN_IF(!cp)) {
return IPC_OK();
}
if (NS_WARN_IF(cp->GetRemoteType() == GetRemoteType())) {
// Wanted to switch to a target browsing context that's already local again.
//
// Dropping the switch on the floor seems fine for this case, though we
// could also try to clone the local document.
//
// If the remote type matches & it's in the same group (which was confirmed
// by CloneIsLegal), it must be the exact same process.
MOZ_DIAGNOSTIC_ASSERT(cp == this);
return IPC_OK();
}
target->CloneDocumentTreeInto(source, cp->GetRemoteType(),
std::move(aPrintData));
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvUpdateRemotePrintSettings(
const MaybeDiscarded<BrowsingContext>& aTarget, PrintData&& aPrintData) {
if (aTarget.IsNullOrDiscarded()) {
return IPC_OK();
}
auto* target = aTarget.get_canonical();
auto* bp = target->GetBrowserParent();
if (NS_WARN_IF(!bp)) {
return IPC_OK();
}
Unused << bp->SendUpdateRemotePrintSettings(aPrintData);
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvConstructPopupBrowser(
ManagedEndpoint<PBrowserParent>&& aBrowserEp,
ManagedEndpoint<PWindowGlobalParent>&& aWindowEp, const TabId& aTabId,
const IPCTabContext& aContext, const WindowGlobalInit& aInitialWindowInit,
const uint32_t& aChromeFlags) {
MOZ_ASSERT(XRE_IsParentProcess());
if (!CanOpenBrowser(aContext)) {
return IPC_FAIL(this, "CanOpenBrowser Failed");
}
RefPtr<CanonicalBrowsingContext> browsingContext =
CanonicalBrowsingContext::Get(
aInitialWindowInit.context().mBrowsingContextId);
if (!browsingContext || browsingContext->IsDiscarded()) {
return IPC_FAIL(this, "Null or discarded initial BrowsingContext");
}
if (!aInitialWindowInit.principal()) {
return IPC_FAIL(this, "Cannot create without valid initial principal");
}
if (!ValidatePrincipal(aInitialWindowInit.principal())) {
LogAndAssertFailedPrincipalValidationInfo(aInitialWindowInit.principal(),
__func__);
}
if (browsingContext->GetBrowserParent()) {
return IPC_FAIL(this, "BrowsingContext already has a BrowserParent");
}
uint32_t chromeFlags = aChromeFlags;
TabId openerTabId(0);
ContentParentId openerCpId(0);
if (aContext.type() == IPCTabContext::TPopupIPCTabContext) {
// CanOpenBrowser has ensured that the IPCTabContext is of
// type PopupIPCTabContext, and that the opener BrowserParent is
// reachable.
const PopupIPCTabContext& popupContext = aContext.get_PopupIPCTabContext();
auto* opener = BrowserParent::GetFrom(popupContext.opener().AsParent());
openerTabId = opener->GetTabId();
openerCpId = opener->Manager()->ChildID();
// We must ensure that the private browsing and remoteness flags
// match those of the opener.
nsCOMPtr<nsILoadContext> loadContext = opener->GetLoadContext();
if (!loadContext) {
return IPC_FAIL(this, "Missing Opener LoadContext");
}
if (loadContext->UsePrivateBrowsing()) {
chromeFlags |= nsIWebBrowserChrome::CHROME_PRIVATE_WINDOW;
}
if (loadContext->UseRemoteSubframes()) {
chromeFlags |= nsIWebBrowserChrome::CHROME_FISSION_WINDOW;
}
}
// And because we're allocating a remote browser, of course the
// window is remote.
chromeFlags |= nsIWebBrowserChrome::CHROME_REMOTE_WINDOW;
if (NS_WARN_IF(!browsingContext->IsOwnedByProcess(ChildID()))) {
return IPC_FAIL(this, "BrowsingContext Owned by Incorrect Process!");
}
MaybeInvalidTabContext tc(aContext);
MOZ_ASSERT(tc.IsValid());
RefPtr<WindowGlobalParent> initialWindow =
WindowGlobalParent::CreateDisconnected(aInitialWindowInit);
if (!initialWindow) {
return IPC_FAIL(this, "Failed to create WindowGlobalParent");
}
auto parent = MakeRefPtr<BrowserParent>(this, aTabId, tc.GetTabContext(),
browsingContext, chromeFlags);
// The creation of PBrowser was triggered from content process through
// window.open().
// We need to register remote frame with the child generated tab id.
ContentProcessManager* cpm = ContentProcessManager::GetSingleton();
if (!cpm || !cpm->RegisterRemoteFrame(parent)) {
return IPC_FAIL(this, "RegisterRemoteFrame Failed");
}
// Bind the created BrowserParent to IPC to actually link the actor.
if (NS_WARN_IF(!BindPBrowserEndpoint(std::move(aBrowserEp), parent))) {
return IPC_FAIL(this, "BindPBrowserEndpoint failed");
}
if (NS_WARN_IF(!parent->BindPWindowGlobalEndpoint(std::move(aWindowEp),
initialWindow))) {
return IPC_FAIL(this, "BindPWindowGlobalEndpoint failed");
}
browsingContext->SetCurrentBrowserParent(parent);
initialWindow->Init();
// When enabling input event prioritization, input events may preempt other
// normal priority IPC messages. To prevent the input events preempt
// PBrowserConstructor, we use an IPC 'RemoteIsReadyToHandleInputEvents' to
// notify parent that BrowserChild is created. In this case, PBrowser is
// initiated from content so that we can set BrowserParent as ready to handle
// input
parent->SetReadyToHandleInputEvents();
return IPC_OK();
}
mozilla::PRemoteSpellcheckEngineParent*
ContentParent::AllocPRemoteSpellcheckEngineParent() {
mozilla::RemoteSpellcheckEngineParent* parent =
new mozilla::RemoteSpellcheckEngineParent();
return parent;
}
bool ContentParent::DeallocPRemoteSpellcheckEngineParent(
PRemoteSpellcheckEngineParent* parent) {
delete parent;
return true;
}
/* static */
void ContentParent::SendShutdownTimerCallback(nsITimer* aTimer,
void* aClosure) {
auto* self = static_cast<ContentParent*>(aClosure);
self->AsyncSendShutDownMessage();
}
/* 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<ContentParent*>(aClosure);
self->KillHard("ShutDownKill");
}
void ContentParent::GeneratePairedMinidump(const char* aReason) {
// 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 unless we're
// already shutting down.
if (mCrashReporter &&
!AppShutdown::IsInOrBeyond(ShutdownPhase::AppShutdownConfirmed) &&
StaticPrefs::dom_ipc_tabs_createKillHardCrashReports_AtStartup()) {
// 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->AddAnnotationNSCString(
CrashReporter::Annotation::additional_minidumps, additionalDumps);
nsDependentCString reason(aReason);
mCrashReporter->AddAnnotationNSCString(
CrashReporter::Annotation::ipc_channel_error, reason);
// Generate the report and insert into the queue for submittal.
if (mCrashReporter->GenerateMinidumpAndPair(mSubprocess, "browser"_ns)) {
mCrashReporter->FinalizeCrashReport();
mCreatedPairedMinidumps = true;
}
}
}
void ContentParent::HandleOrphanedMinidump(nsString* aDumpId) {
if (CrashReporter::FinalizeOrphanedMinidump(
OtherPid(), GeckoProcessType_Content, aDumpId)) {
CrashReporterHost::RecordCrash(GeckoProcessType_Content,
nsICrashService::CRASH_TYPE_CRASH, *aDumpId);
} else {
NS_WARNING(nsPrintfCString("content process childid = %d pid = %" PRIPID
" crashed without leaving a minidump behind",
OtherChildID(), OtherPid())
.get());
}
}
// 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
if (mCalledKillHard) {
return;
}
mCalledKillHard = true;
if (mSendShutdownTimer) {
mSendShutdownTimer->Cancel();
mSendShutdownTimer = nullptr;
}
if (mForceKillTimer) {
mForceKillTimer->Cancel();
mForceKillTimer = nullptr;
}
RemoveShutdownBlockers();
nsCString reason = nsDependentCString(aReason);
// If we find mIsNotifiedShutdownSuccess there is no reason to blame this
// content process, most probably our parent process is just slow in
// processing its own main thread queue.
if (!mIsNotifiedShutdownSuccess) {
GeneratePairedMinidump(aReason);
} else {
reason = nsDependentCString("KillHard after IsNotifiedShutdownSuccess.");
}
glean::subprocess::kill_hard.Get(reason).Add(1);
ProcessHandle otherProcessHandle;
if (!base::OpenProcessHandle(OtherPid(), &otherProcessHandle)) {
NS_ERROR("Failed to open child process when attempting kill.");
if (CanSend()) {
GetIPCChannel()->InduceConnectionError();
}
return;
}
if (!KillProcess(otherProcessHandle, base::PROCESS_END_KILLED_BY_USER)) {
if (mCrashReporter) {
mCrashReporter->DeleteCrashReport();
}
NS_WARNING("failed to kill subprocess!");
}
if (mSubprocess) {
MOZ_LOG(
ContentParent::GetLog(), LogLevel::Verbose,
("KillHard Subprocess(%s): ContentParent %p mSubprocess %p handle "
"%" PRIuPTR,
aReason, this, mSubprocess,
mSubprocess ? (uintptr_t)mSubprocess->GetChildProcessHandle() : -1));
mSubprocess->SetAlreadyDead();
}
// After we've killed the remote process, also ensure we induce a connection
// error in the IPC channel to immediately stop all IPC communication on this
// channel.
if (CanSend()) {
GetIPCChannel()->InduceConnectionError();
}
// EnsureProcessTerminated has responsibilty for closing otherProcessHandle.
XRE_GetAsyncIOEventTarget()->Dispatch(
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("<anonymized-name>");
} else {
aName.AssignLiteral("???");
}
}
mozilla::ipc::IPCResult ContentParent::RecvInitCrashReporter(
const CrashReporter::CrashReporterInitArgs& aInitArgs) {
mCrashReporter = MakeUnique<CrashReporterHost>(GeckoProcessType_Content,
OtherPid(), aInitArgs);
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 Maybe<FileDescriptor>& aDMDFile) {
// This automatically cancels the previous request.
mMemoryReportRequest = MakeUnique<MemoryReportRequestHost>(aGeneration);
// If we run the callback in response to a reply, then by definition |this|
// is still alive, so the ref pointer is redundant, but it seems easier
// to hold a strong reference than to worry about that.
RefPtr<ContentParent> self(this);
PContentParent::SendRequestMemoryReport(
aGeneration, aAnonymize, aMinimizeMemoryUsage, aDMDFile,
[&, self](const uint32_t& aGeneration2) {
if (self->mMemoryReportRequest) {
self->mMemoryReportRequest->Finish(aGeneration2);
self->mMemoryReportRequest = nullptr;
}
},
[&, self](mozilla::ipc::ResponseRejectReason) {
self->mMemoryReportRequest = nullptr;
});
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvAddMemoryReport(
const MemoryReport& aReport) {
if (mMemoryReportRequest) {
mMemoryReportRequest->RecvReport(aReport);
}
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);
}
PScriptCacheParent* ContentParent::AllocPScriptCacheParent(
const FileDescOrError& cacheFile, const bool& wantCacheData) {
return new loader::ScriptCacheParent(wantCacheData);
}
bool ContentParent::DeallocPScriptCacheParent(PScriptCacheParent* cache) {
delete static_cast<loader::ScriptCacheParent*>(cache);
return true;
}
already_AddRefed<PNeckoParent> ContentParent::AllocPNeckoParent() {
RefPtr<NeckoParent> actor = new NeckoParent();
return actor.forget();
}
mozilla::ipc::IPCResult ContentParent::RecvInitStreamFilter(
const uint64_t& aChannelId, const nsAString& aAddonId,
InitStreamFilterResolver&& aResolver) {
extensions::StreamFilterParent::Create(this, aChannelId, aAddonId)
->Then(
GetCurrentSerialEventTarget(), __func__,
[aResolver](mozilla::ipc::Endpoint<PStreamFilterChild>&& aEndpoint) {
aResolver(std::move(aEndpoint));
},
[aResolver](bool aDummy) {
aResolver(mozilla::ipc::Endpoint<PStreamFilterChild>());
});
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvAddSecurityState(
const MaybeDiscarded<WindowContext>& aContext, uint32_t aStateFlags) {
if (aContext.IsNullOrDiscarded()) {
return IPC_OK();
}
aContext.get()->AddSecurityState(aStateFlags);
return IPC_OK();
}
already_AddRefed<PExternalHelperAppParent>
ContentParent::AllocPExternalHelperAppParent(
nsIURI* uri, const mozilla::net::LoadInfoArgs& aLoadInfoArgs,
const nsACString& aMimeContentType, const nsACString& aContentDisposition,
const uint32_t& aContentDispositionHint,
const nsAString& aContentDispositionFilename, const bool& aForceSave,
const int64_t& aContentLength, const bool& aWasFileChannel,
nsIURI* aReferrer, const MaybeDiscarded<BrowsingContext>& aContext) {
RefPtr<ExternalHelperAppParent> parent = new ExternalHelperAppParent(
uri, aContentLength, aWasFileChannel, aContentDisposition,
aContentDispositionHint, aContentDispositionFilename);
return parent.forget();
}
mozilla::ipc::IPCResult ContentParent::RecvPExternalHelperAppConstructor(
PExternalHelperAppParent* actor, nsIURI* uri,
const LoadInfoArgs& loadInfoArgs, const nsACString& aMimeContentType,
const nsACString& aContentDisposition,
const uint32_t& aContentDispositionHint,
const nsAString& aContentDispositionFilename, const bool& aForceSave,
const int64_t& aContentLength, const bool& aWasFileChannel,
nsIURI* aReferrer, const MaybeDiscarded<BrowsingContext>& aContext) {
BrowsingContext* context = aContext.IsDiscarded() ? nullptr : aContext.get();
if (!static_cast<ExternalHelperAppParent*>(actor)->Init(
loadInfoArgs, aMimeContentType, aForceSave, aReferrer, context)) {
return IPC_FAIL(this, "Init failed.");
}
return IPC_OK();
}
already_AddRefed<PHandlerServiceParent>
ContentParent::AllocPHandlerServiceParent() {
RefPtr<HandlerServiceParent> actor = new HandlerServiceParent();
return actor.forget();
}
media::PMediaParent* ContentParent::AllocPMediaParent() {
return media::AllocPMediaParent();
}
bool ContentParent::DeallocPMediaParent(media::PMediaParent* aActor) {
return media::DeallocPMediaParent(aActor);
}
#ifdef MOZ_WEBSPEECH
already_AddRefed<PSpeechSynthesisParent>
ContentParent::AllocPSpeechSynthesisParent() {
if (!StaticPrefs::media_webspeech_synth_enabled()) {
return nullptr;
}
RefPtr<SpeechSynthesisParent> actor = new SpeechSynthesisParent();
return actor.forget();
}
mozilla::ipc::IPCResult ContentParent::RecvPSpeechSynthesisConstructor(
PSpeechSynthesisParent* aActor) {
if (!static_cast<SpeechSynthesisParent*>(aActor)->SendInit()) {
return IPC_FAIL(this, "SpeechSynthesisParent::SendInit failed.");
}
return IPC_OK();
}
#endif
mozilla::ipc::IPCResult ContentParent::RecvStartVisitedQueries(
const nsTArray<RefPtr<nsIURI>>& aUris) {
nsCOMPtr<IHistory> history = components::History::Service();
if (!history) {
return IPC_OK();
}
for (const auto& uri : aUris) {
if (NS_WARN_IF(!uri)) {
continue;
}
history->ScheduleVisitedQuery(uri, this);
}
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvSetURITitle(nsIURI* uri,
const nsAString& title) {
if (!uri) {
return IPC_FAIL(this, "uri must not be null.");
}
nsCOMPtr<IHistory> history = components::History::Service();
if (history) {
history->SetURITitle(uri, title);
}
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvIsSecureURI(
nsIURI* aURI, const OriginAttributes& aOriginAttributes,
bool* aIsSecureURI) {
nsCOMPtr<nsISiteSecurityService> sss(do_GetService(NS_SSSERVICE_CONTRACTID));
if (!sss) {
return IPC_FAIL(this, "Failed to get nsISiteSecurityService.");
}
if (!aURI) {
return IPC_FAIL(this, "aURI must not be null.");
}
nsresult rv = sss->IsSecureURI(aURI, aOriginAttributes, aIsSecureURI);
if (NS_FAILED(rv)) {
return IPC_FAIL(this, "IsSecureURI failed.");
}
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvAccumulateMixedContentHSTS(
nsIURI* aURI, const bool& aActive,
const OriginAttributes& aOriginAttributes) {
if (!aURI) {
return IPC_FAIL(this, "aURI must not be null.");
}
nsMixedContentBlocker::AccumulateMixedContentHSTS(aURI, aActive,
aOriginAttributes);
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvLoadURIExternal(
nsIURI* uri, nsIPrincipal* aTriggeringPrincipal,
nsIPrincipal* aRedirectPrincipal,
const MaybeDiscarded<BrowsingContext>& aContext,
bool aWasExternallyTriggered, bool aHasValidUserGestureActivation,
bool aNewWindowTarget) {
if (aContext.IsDiscarded()) {
return IPC_OK();
}
nsCOMPtr<nsIExternalProtocolService> extProtService(
do_GetService(NS_EXTERNALPROTOCOLSERVICE_CONTRACTID));
if (!extProtService) {
return IPC_OK();
}
if (!uri) {
return IPC_FAIL(this, "uri must not be null.");
}
BrowsingContext* bc = aContext.get();
extProtService->LoadURI(uri, aTriggeringPrincipal, aRedirectPrincipal, bc,
aWasExternallyTriggered,
aHasValidUserGestureActivation, aNewWindowTarget);
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvExtProtocolChannelConnectParent(
const uint64_t& registrarId) {
nsresult rv;
// First get the real channel created before redirect on the parent.
nsCOMPtr<nsIChannel> channel;
rv = NS_LinkRedirectChannels(registrarId, nullptr, getter_AddRefs(channel));
NS_ENSURE_SUCCESS(rv, IPC_OK());
nsCOMPtr<nsIParentChannel> 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();
}
mozilla::ipc::IPCResult ContentParent::RecvSyncMessage(
const nsAString& aMsg, const ClonedMessageData& aData,
nsTArray<StructuredCloneData>* aRetvals) {
AUTO_PROFILER_LABEL_DYNAMIC_LOSSY_NSSTRING("ContentParent::RecvSyncMessage",
OTHER, aMsg);
MMPrinter::Print("ContentParent::RecvSyncMessage", aMsg, aData);
RefPtr<nsFrameMessageManager> ppm = mMessageManager;
if (ppm) {
ipc::StructuredCloneData data;
ipc::UnpackClonedMessageData(aData, data);
ppm->ReceiveMessage(ppm, nullptr, aMsg, true, &data, aRetvals,
IgnoreErrors());
}
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvAsyncMessage(
const nsAString& aMsg, const ClonedMessageData& aData) {
AUTO_PROFILER_LABEL_DYNAMIC_LOSSY_NSSTRING("ContentParent::RecvAsyncMessage",
OTHER, aMsg);
MMPrinter::Print("ContentParent::RecvAsyncMessage", aMsg, aData);
RefPtr<nsFrameMessageManager> ppm = mMessageManager;
if (ppm) {
ipc::StructuredCloneData data;
ipc::UnpackClonedMessageData(aData, data);
ppm->ReceiveMessage(ppm, nullptr, aMsg, false, &data, nullptr,
IgnoreErrors());
}
return IPC_OK();
}
MOZ_CAN_RUN_SCRIPT
static int32_t AddGeolocationListener(
nsIDOMGeoPositionCallback* watcher,
nsIDOMGeoPositionErrorCallback* errorCallBack, bool highAccuracy) {
RefPtr<Geolocation> geo = Geolocation::NonWindowSingleton();
UniquePtr<PositionOptions> options = MakeUnique<PositionOptions>();
options->mTimeout = 0;
options->mMaximumAge = 0;
options->mEnableHighAccuracy = highAccuracy;
return geo->WatchPosition(watcher, errorCallBack, std::move(options));
}
mozilla::ipc::IPCResult ContentParent::RecvAddGeolocationListener(
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) {
RefPtr<Geolocation> geo = Geolocation::NonWindowSingleton();
if (geo) {
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(GeolocationPositionError* positionError) {
Unused << SendGeolocationError(positionError->Code());
return NS_OK;
}
mozilla::ipc::IPCResult ContentParent::RecvConsoleMessage(
const nsAString& aMessage) {
nsresult rv;
nsCOMPtr<nsIConsoleService> consoleService =
do_GetService(NS_CONSOLESERVICE_CONTRACTID, &rv);
if (NS_SUCCEEDED(rv)) {
RefPtr<nsConsoleMessage> msg(new nsConsoleMessage(aMessage));
msg->SetIsForwardedFromContentProcess(true);
consoleService->LogMessageWithMode(msg, nsIConsoleService::SuppressLog);
}
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvReportFrameTimingData(
const LoadInfoArgs& loadInfoArgs, const nsAString& entryName,
const nsAString& initiatorType, UniquePtr<PerformanceTimingData>&& aData) {
if (!aData) {
return IPC_FAIL(this, "aData should not be null");
}
RefPtr<WindowGlobalParent> parent =
WindowGlobalParent::GetByInnerWindowId(loadInfoArgs.innerWindowID());
if (!parent || !parent->GetContentParent()) {
return IPC_OK();
}
MOZ_ASSERT(parent->GetContentParent() != this,
"No need to bounce around if in the same process");
Unused << parent->GetContentParent()->SendReportFrameTimingData(
loadInfoArgs, entryName, initiatorType, aData);
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvScriptError(
const nsAString& aMessage, const nsACString& aSourceName,
const uint32_t& aLineNumber, const uint32_t& aColNumber,
const uint32_t& aFlags, const nsACString& aCategory,
const bool& aIsFromPrivateWindow, const uint64_t& aInnerWindowId,
const bool& aIsFromChromeContext) {
return RecvScriptErrorInternal(aMessage, aSourceName, aLineNumber, aColNumber,
aFlags, aCategory, aIsFromPrivateWindow,
aIsFromChromeContext);
}
mozilla::ipc::IPCResult ContentParent::RecvScriptErrorWithStack(
const nsAString& aMessage, const nsACString& aSourceName,
const uint32_t& aLineNumber, const uint32_t& aColNumber,
const uint32_t& aFlags, const nsACString& aCategory,
const bool& aIsFromPrivateWindow, const bool& aIsFromChromeContext,
const ClonedMessageData& aStack) {
return RecvScriptErrorInternal(aMessage, aSourceName, aLineNumber, aColNumber,
aFlags, aCategory, aIsFromPrivateWindow,
aIsFromChromeContext, &aStack);
}
mozilla::ipc::IPCResult ContentParent::RecvScriptErrorInternal(
const nsAString& aMessage, const nsACString& aSourceName,
const uint32_t& aLineNumber, const uint32_t& aColNumber,
const uint32_t& aFlags, const nsACString& aCategory,
const bool& aIsFromPrivateWindow, const bool& aIsFromChromeContext,
const ClonedMessageData* aStack) {
nsresult rv;
nsCOMPtr<nsIConsoleService> consoleService =
do_GetService(NS_CONSOLESERVICE_CONTRACTID, &rv);
if (NS_FAILED(rv)) {
return IPC_OK();
}
nsCOMPtr<nsIScriptError> msg;
if (aStack) {
StructuredCloneData data;
UnpackClonedMessageData(*aStack, data);
AutoJSAPI jsapi;
if (NS_WARN_IF(!jsapi.Init(xpc::PrivilegedJunkScope()))) {
MOZ_CRASH();
}
JSContext* cx = jsapi.cx();
JS::Rooted<JS::Value> stack(cx);
ErrorResult rv;
data.Read(cx, &stack, rv);
if (rv.Failed() || !stack.isObject()) {
rv.SuppressException();
return IPC_OK();
}
JS::Rooted<JSObject*> stackObj(cx, &stack.toObject());
if (!JS::IsUnwrappedSavedFrame(stackObj)) {
return IPC_FAIL(this, "Unexpected object");
}
JS::Rooted<JSObject*> stackGlobal(cx, JS::GetNonCCWObjectGlobal(stackObj));
msg = new nsScriptErrorWithStack(JS::NothingHandleValue, stackObj,
stackGlobal);
} else {
msg = new nsScriptError();
}
rv = msg->Init(aMessage, aSourceName, aLineNumber, aColNumber, aFlags,
aCategory, aIsFromPrivateWindow, aIsFromChromeContext);
if (NS_FAILED(rv)) return IPC_OK();
msg->SetIsForwardedFromContentProcess(true);
consoleService->LogMessageWithMode(msg, nsIConsoleService::SuppressLog);
return IPC_OK();
}
bool ContentParent::DoLoadMessageManagerScript(const nsAString& aURL,
bool aRunInGlobalScope) {
MOZ_ASSERT(!aRunInGlobalScope);
return SendLoadProcessScript(aURL);
}
nsresult ContentParent::DoSendAsyncMessage(const nsAString& aMessage,
StructuredCloneData& aData) {
ClonedMessageData data;
if (!BuildClonedMessageData(aData, data)) {
return NS_ERROR_DOM_DATA_CLONE_ERR;
}
if (!SendAsyncMessage(aMessage, data)) {
return NS_ERROR_UNEXPECTED;
}
return NS_OK;
}
mozilla::ipc::IPCResult ContentParent::RecvCopyFavicon(
nsIURI* aOldURI, nsIURI* aNewURI, const bool& aInPrivateBrowsing) {
if (!aOldURI) {
return IPC_FAIL(this, "aOldURI should not be null");
}
if (!aNewURI) {
return IPC_FAIL(this, "aNewURI should not be null");
}
nsDocShell::CopyFavicon(aOldURI, aNewURI, aInPrivateBrowsing);
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvFindImageText(
IPCImage&& aImage, nsTArray<nsCString>&& aLanguages,
FindImageTextResolver&& aResolver) {
if (!TextRecognition::IsSupported() ||
!Preferences::GetBool("dom.text-recognition.enabled")) {
return IPC_FAIL(this, "Text recognition not available.");
}
RefPtr<DataSourceSurface> surf = nsContentUtils::IPCImageToSurface(aImage);
if (!surf) {
aResolver(TextRecognitionResultOrError("Failed to read image"_ns));
return IPC_OK();
}
TextRecognition::FindText(*surf, aLanguages)
->Then(
GetCurrentSerialEventTarget(), __func__,
[resolver = std::move(aResolver)](
TextRecognition::NativePromise::ResolveOrRejectValue&& aValue) {
if (aValue.IsResolve()) {
resolver(TextRecognitionResultOrError(aValue.ResolveValue()));
} else {
resolver(TextRecognitionResultOrError(aValue.RejectValue()));
}
});
return IPC_OK();
}
bool ContentParent::ShouldContinueFromReplyTimeout() {
RefPtr<ProcessHangMonitor> monitor = ProcessHangMonitor::Get();
return !monitor || !monitor->ShouldTimeOutCPOWs();
}
mozilla::ipc::IPCResult ContentParent::RecvAddIdleObserver(
const uint64_t& aObserverId, const uint32_t& aIdleTimeInS) {
nsresult rv;
nsCOMPtr<nsIUserIdleService> idleService =
do_GetService("@mozilla.org/widget/useridleservice;1", &rv);
NS_ENSURE_SUCCESS(rv, IPC_FAIL(this, "Failed to get UserIdleService."));
RefPtr<ParentIdleListener> listener =
new ParentIdleListener(this, aObserverId, aIdleTimeInS);
rv = idleService->AddIdleObserver(listener, aIdleTimeInS);
NS_ENSURE_SUCCESS(rv, IPC_FAIL(this, "AddIdleObserver failed."));
mIdleListeners.AppendElement(listener);
return IPC_OK();
}
mozilla::ipc::IPCResult ContentParent::RecvRemoveIdleObserver(
const uint64_t& aObserverId, const uint32_t& aIdleTimeInS) {
RefPtr<ParentIdleListener> listener;
for (int32_t i = mIdleListeners.Length() - 1; i >= 0; --i) {
listener = static_cast<ParentIdleListener*>(mIdleListeners[i].get());
if (listener->mObserver == aObserverId && listener->mTime == aIdleTimeInS) {
nsresult rv;
nsCOMPtr<nsIUserIdleService> idleService =
do_GetService("@mozilla.org/widget/useridleservice;1", &rv);
NS_ENSURE_SUCCESS(rv, IPC_FAIL(this, "Failed to get UserIdleService."));
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(!mChildXSocketFdDup, "Already backed up X resources??");
if (aXSocketFd.IsValid()) {
mChildXSocketFdDup = aXSocketFd.ClonePlatformHandle();
}
#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<ContentParent> 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<ContentParent> 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<nsIEventTarget> 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();
FileDescOrError result;
if (fd.IsValid()) {
result = fd;
} else {
result = NS_ERROR_FAILURE;
}
aResolver(result);
return IPC_OK();
}
already_AddRefed<extensions::PExtensionsParent>
ContentParent::AllocPExtensionsParent() {
return MakeAndAddRef<extensions::ExtensionsParent>();
}
void ContentParent::NotifyUpdatedDictionaries() {
RefPtr<mozSpellChecker> spellChecker(mozSpellChecker::Create());
MOZ_ASSERT(spellChecker, "No spell checker?");
nsTArray<nsCString> dictionaries;
spellChecker->GetDictionaryList(&dictionaries);
for (auto* cp : AllProcesses(eLive)) {
Unused << cp->SendUpdateDictionaryList(dictionaries);
}
}
void ContentParent::NotifyUpdatedFonts(bool aFullRebuild) {
if (gfxPlatformFontList::PlatformFontList()->SharedFontList()) {
for (auto* cp : AllProcesses(eLive)) {
Unused << cp->SendRebuildFontList(aFullRebuild);
}
return;
}
SystemFontList fontList;
gfxPlatform::GetPlatform()->ReadSystemFontList(&fontList);
for (auto* cp : AllProcesses(eLive)) {
Unused << cp->SendUpdateFontList(fontList);
}
}
#ifdef MOZ_WEBRTC
PWebrtcGlobalParent* ContentParent::AllocPWebrtcGlobalParent() {
return WebrtcGlobalParent::Alloc();
}
bool ContentParent::DeallocPWebrtcGlobalParent(PWebrtcGlobalParent* aActor) {
WebrtcGlobalParent::Dealloc(static_cast<WebrtcGlobalParent*>(aActor));
return true;
}
#endif
PContentPermissionRequestParent*
ContentParent::AllocPContentPermissionRequestParent(
const nsTArray<PermissionRequest>& aRequests, nsIPrincipal* aPrincipal,
nsIPrincipal* aTopLevelPrincipal, const bool& aIsHandlingUserInput,
const bool& aMaybeUnsafePermissionDelegate, const TabId& aTabId) {
RefPtr<BrowserParent> tp;
ContentProcessManager* cpm = ContentProcessManager::GetSingleton();
if (cpm) {
tp =
cpm->GetTopLevelBrowserParentByProcessAndTabId(this->ChildID(), aTabId);
}
if (!tp) {
return nullptr;
}
nsIPrincipal* topPrincipal = aTopLevelPrincipal;
if (!topPrincipal) {
nsCOMPtr<nsIPrincipal> principal = tp->GetContentPrincipal();
topPrincipal = principal;
}
return nsContentPermissionUtils::CreateContentPermissionRequestParent(
aRequests, tp->GetOwnerElement(), aPrincipal, topPrincipal,
aIsHandlingUserInput, aMaybeUnsafePermissionDelegate, aTabId);
}
bool ContentParent::DeallocPContentPermissionRequestParent(
PContentPermissionRequestParent* actor) {
nsContentPermissionUtils::NotifyRemoveContentPermissionRequestParent(actor);
delete actor;
return true;
}
already_AddRefed<PWebBrowserPersistDocumentParent>
ContentParent::AllocPWebBrowserPersistDocumentParent(
PBrowserParent* aBrowser, const MaybeDiscarded<BrowsingContext>& aContext) {
return MakeAndAddRef<WebBrowserPersistDocumentParent>();
}
mozilla::ipc::IPCResult ContentParent::CommonCreateWindow(
PBrowserParent* aThisTab, BrowsingContext& aParent, bool aSetOpener,
const uint32_t& aChromeFlags, const bool& aCalledFromJS,
const bool& aForPrinting, const bool& aForWindowDotPrint,
const bool& aIsTopLevelCreatedByWebContent, nsIURI* aURIToLoad,
const nsACString& aFeatures, const UserActivation::Modifiers& aModifiers,
BrowserParent* aNextRemoteBrowser, const nsAString& aName,
nsresult& aResult, nsCOMPtr<nsIRemoteTab>& aNewRemoteTab,
bool* aWindowIsNew, int32_t& aOpenLocation,
nsIPrincipal* aTriggeringPrincipal, nsIReferrerInfo* aReferrerInfo,
bool aLoadURI, nsIContentSecurityPolicy* aCsp,
const OriginAttributes& aOriginAttributes, bool aUserActivation,
bool aTextDirectiveUserActivation) {
// The content process should never be in charge of computing whether or
// not a window should be private - the parent will do that.
const uint32_t badFlags = nsIWebBrowserChrome::CHROME_PRIVATE_WINDOW |
nsIWebBrowserChrome::CHROME_NON_PRIVATE_WINDOW |
nsIWebBrowserChrome::CHROME_PRIVATE_LIFETIME;
if (!!(aChromeFlags & badFlags)) {
return IPC_FAIL(this, "Forbidden aChromeFlags passed");
}
RefPtr<nsOpenWindowInfo> openInfo = new nsOpenWindowInfo();
openInfo->mForceNoOpener = !aSetOpener;
openInfo->mParent = &aParent;
openInfo->mIsRemote = true;
openInfo->mIsForPrinting = aForPrinting;
openInfo->mIsForWindowDotPrint = aForWindowDotPrint;
openInfo->mNextRemoteBrowser = aNextRemoteBrowser;
openInfo->mOriginAttributes = aOriginAttributes;
openInfo->mIsTopLevelCreatedByWebContent = aIsTopLevelCreatedByWebContent;
openInfo->mHasValidUserGestureActivation = aUserActivation;
openInfo->mTextDirectiveUserActivation = aTextDirectiveUserActivation;
MOZ_ASSERT_IF(aForWindowDotPrint, aForPrinting);
RefPtr<BrowserParent> topParent = BrowserParent::GetFrom(aThisTab);
while (topParent && topParent->GetBrowserBridgeParent()) {
topParent = topParent->GetBrowserBridgeParent()->Manager();
}
RefPtr<BrowserHost> thisBrowserHost =
topParent ? topParent->GetBrowserHost() : nullptr;
MOZ_ASSERT_IF(topParent, thisBrowserHost);
RefPtr<BrowsingContext> topBC =
topParent ? topParent->GetBrowsingContext() : nullptr;
MOZ_ASSERT_IF(topParent, topBC);
// The content process should have set its remote and fission flags correctly.
if (topBC) {
if ((!!(aChromeFlags & nsIWebBrowserChrome::CHROME_REMOTE_WINDOW) !=
topBC->UseRemoteTabs()) ||
(!!(aChromeFlags & nsIWebBrowserChrome::CHROME_FISSION_WINDOW) !=
topBC->UseRemoteSubframes())) {
return IPC_FAIL(this, "Unexpected aChromeFlags passed");
}
if (!aOriginAttributes.EqualsIgnoringFPD(topBC->OriginAttributesRef())) {
return IPC_FAIL(this, "Passed-in OriginAttributes does not match opener");
}
}
nsCOMPtr<nsIContent> frame;
if (topParent) {
frame = topParent->GetOwnerElement();
}
nsCOMPtr<nsPIDOMWindowOuter> 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<nsIBrowserDOMWindow> browserDOMWin;
if (topParent) {
browserDOMWin = topParent->GetBrowserDOMWindow();
}
// If we haven't found a chrome window to open in, just use the most recently
// opened non PBM window.
if (!outerWin) {
// The parent was a private window but it's no longer available.
if (aOriginAttributes.mPrivateBrowsingId !=
nsIScriptSecurityManager::DEFAULT_PRIVATE_BROWSING_ID) {
aResult = NS_ERROR_FAILURE;
return IPC_OK();
}
outerWin = nsContentUtils::GetMostRecentNonPBWindow();
if (NS_WARN_IF(!outerWin)) {
aResult = NS_ERROR_FAILURE;
return IPC_OK();
}
if (nsGlobalWindowOuter::Cast(outerWin)->IsChromeWindow()) {
browserDOMWin =
nsGlobalWindowOuter::Cast(outerWin)->GetBrowserDOMWindow();
}
}
aOpenLocation = nsWindowWatcher::GetWindowOpenLocation(
outerWin, aChromeFlags, aModifiers, aCalledFromJS, aForPrinting);
MOZ_ASSERT(aOpenLocation == nsIBrowserDOMWindow::OPEN_NEWTAB ||
aOpenLocation == nsIBrowserDOMWindow::OPEN_NEWTAB_BACKGROUND ||
aOpenLocation == nsIBrowserDOMWindow::OPEN_NEWTAB_FOREGROUND ||
aOpenLocation == nsIBrowserDOMWindow::OPEN_NEWWINDOW ||
aOpenLocation == nsIBrowserDOMWindow::OPEN_PRINT_BROWSER);
if (NS_WARN_IF(!browserDOMWin)) {
#ifdef MOZ_GECKOVIEW
// This might be print preview, but GeckoView doesn't support yet.
aResult = NS_ERROR_FAILURE;
return IPC_OK();
#else
// Opening in the same window or headless requires an nsIBrowserDOMWindow.
aOpenLocation = nsIBrowserDOMWindow::OPEN_NEWWINDOW;
#endif
}
if (aOpenLocation == nsIBrowserDOMWindow::OPEN_NEWTAB ||
aOpenLocation == nsIBrowserDOMWindow::OPEN_NEWTAB_BACKGROUND ||
aOpenLocation == nsIBrowserDOMWindow::OPEN_NEWTAB_FOREGROUND ||
aOpenLocation == nsIBrowserDOMWindow::OPEN_PRINT_BROWSER) {
RefPtr<Element> openerElement = do_QueryObject(frame);
nsCOMPtr<nsIOpenURIInFrameParams> params =
new nsOpenURIInFrameParams(openInfo, openerElement);
params->SetReferrerInfo(aReferrerInfo);
MOZ_ASSERT(aTriggeringPrincipal, "need a valid triggeringPrincipal");
params->SetTriggeringPrincipal(aTriggeringPrincipal);
params->SetCsp(aCsp);
RefPtr<Element> el;
if (aLoadURI) {
aResult = browserDOMWin->OpenURIInFrame(aURIToLoad, params, aOpenLocation,
nsIBrowserDOMWindow::OPEN_NEW,
aName, getter_AddRefs(el));
} else {
aResult = browserDOMWin->CreateContentWindowInFrame(
aURIToLoad, params, aOpenLocation, nsIBrowserDOMWindow::OPEN_NEW,
aName, getter_AddRefs(el));
}
RefPtr<nsFrameLoaderOwner> frameLoaderOwner = do_QueryObject(el);
if (NS_SUCCEEDED(aResult) && frameLoaderOwner) {
RefPtr<nsFrameLoader> frameLoader = frameLoaderOwner->GetFrameLoader();
if (frameLoader) {
aNewRemoteTab = frameLoader->GetRemoteTab();
// 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
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.
aOpenLocation = nsIBrowserDOMWindow::OPEN_NEWWINDOW;
} else {
*aWindowIsNew = false;
}
// If we didn't retarget our window open into a new window, we should return
// now.
if (aOpenLocation != nsIBrowserDOMWindow::OPEN_NEWWINDOW) {
return IPC_OK();
}
}
nsCOMPtr<nsPIWindowWatcher> pwwatch =
do_GetService(NS_WINDOWWATCHER_CONTRACTID, &aResult);
if (NS_WARN_IF(NS_FAILED(aResult))) {
return IPC_OK();
}
WindowFeatures features;
features.Tokenize(aFeatures);
aResult = pwwatch->OpenWindowWithRemoteTab(
thisBrowserHost, features, aModifiers, aCalledFromJS, aParent.FullZoom(),
openInfo, getter_AddRefs(aNewRemoteTab));
if (NS_WARN_IF(NS_FAILED(aResult))) {
return IPC_OK();
}
MOZ_ASSERT(aNewRemoteTab);
RefPtr<BrowserHost> newBrowserHost = BrowserHost::GetFrom(aNewRemoteTab);
RefPtr<BrowserParent> newBrowserParent = newBrowserHost->GetActor();
// 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
nsCOMPtr<Element> frameElement = newBrowserHost->GetOwnerElement();
MOZ_ASSERT(frameElement);
if (nsWindowWatcher::HaveSpecifiedSize(features)) {
// We want to flush the layout anyway because of the resize to the specified
RefPtr<Document> chromeDoc = frameElement->OwnerDoc();