gecko-dev/dom/ipc/ContentParent.h

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_ContentParent_h
#define mozilla_dom_ContentParent_h
#include "mozilla/dom/PContentParent.h"
#include "mozilla/dom/nsIContentParent.h"
#include "mozilla/gfx/gfxVarReceiver.h"
#include "mozilla/gfx/GPUProcessListener.h"
#include "mozilla/Attributes.h"
#include "mozilla/FileUtils.h"
#include "mozilla/HalTypes.h"
#include "mozilla/LinkedList.h"
#include "mozilla/MemoryReportingProcess.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/TimeStamp.h"
#include "mozilla/UniquePtr.h"
#include "ContentProcessHost.h"
#include "nsDataHashtable.h"
#include "nsPluginTags.h"
#include "nsFrameMessageManager.h"
#include "nsHashKeys.h"
#include "nsIInterfaceRequestor.h"
#include "nsIObserver.h"
#include "nsIThreadInternal.h"
#include "nsIDOMGeoPositionCallback.h"
#include "nsIDOMGeoPositionErrorCallback.h"
#include "nsRefPtrHashtable.h"
#include "PermissionMessageUtils.h"
#include "DriverCrashGuard.h"
#define CHILD_PROCESS_SHUTDOWN_MESSAGE NS_LITERAL_STRING("child-process-shutdown")
// These must match the similar ones in E10SUtils.jsm.
// Process names as reported by about:memory are defined in
// ContentChild:RecvRemoteType. Add your value there too or it will be called
// "Web Content".
#define DEFAULT_REMOTE_TYPE "web"
#define FILE_REMOTE_TYPE "file"
#define EXTENSION_REMOTE_TYPE "extension"
#define PRIVILEGED_REMOTE_TYPE "privileged"
// This must start with the DEFAULT_REMOTE_TYPE above.
#define LARGE_ALLOCATION_REMOTE_TYPE "webLargeAllocation"
class nsConsoleService;
class nsIContentProcessInfo;
class nsICycleCollectorLogSink;
class nsIDumpGCAndCCLogsCallback;
class nsITabParent;
class nsITimer;
class ParentIdleListener;
class nsIWidget;
namespace mozilla {
class PRemoteSpellcheckEngineParent;
#if defined(XP_LINUX) && defined(MOZ_CONTENT_SANDBOX)
class SandboxBroker;
class SandboxBrokerPolicyFactory;
#endif
class PreallocatedProcessManagerImpl;
using mozilla::loader::PScriptCacheParent;
namespace embedding {
class PrintingParent;
}
namespace ipc {
class CrashReporterHost;
class OptionalURIParams;
class PFileDescriptorSetParent;
class URIParams;
class TestShellParent;
#ifdef FUZZING
class ProtocolFuzzerHelper;
#endif
} // namespace ipc
namespace jsipc {
class PJavaScriptParent;
} // namespace jsipc
namespace layers {
struct TextureFactoryIdentifier;
} // namespace layers
namespace layout {
class PRenderFrameParent;
} // namespace layout
namespace dom {
class Element;
class TabParent;
class ClonedMessageData;
class MemoryReport;
class TabContext;
class ContentBridgeParent;
class GetFilesHelper;
class MemoryReportRequestHost;
class ContentParent final : public PContentParent
, public nsIContentParent
, public nsIObserver
, public nsIDOMGeoPositionCallback
, public nsIDOMGeoPositionErrorCallback
, public nsIInterfaceRequestor
, public gfx::gfxVarReceiver
, public mozilla::LinkedListElement<ContentParent>
, public gfx::GPUProcessListener
, public mozilla::MemoryReportingProcess
{
typedef mozilla::ipc::OptionalURIParams OptionalURIParams;
typedef mozilla::ipc::PFileDescriptorSetParent PFileDescriptorSetParent;
typedef mozilla::ipc::TestShellParent TestShellParent;
typedef mozilla::ipc::URIParams URIParams;
typedef mozilla::ipc::PrincipalInfo PrincipalInfo;
typedef mozilla::dom::ClonedMessageData ClonedMessageData;
friend class ContentProcessHost;
friend class mozilla::PreallocatedProcessManagerImpl;
#ifdef FUZZING
friend class mozilla::ipc::ProtocolFuzzerHelper;
#endif
public:
virtual bool IsContentParent() const override { return true; }
/**
* Create a subprocess suitable for use later as a content process.
*/
static already_AddRefed<ContentParent> PreallocateProcess();
/**
* Start up the content-process machinery. This might include
* scheduling pre-launch tasks.
*/
static void StartUp();
/** Shut down the content-process machinery. */
static void ShutDown();
static uint32_t GetPoolSize(const nsAString& aContentProcessType);
static uint32_t GetMaxProcessCount(const nsAString& aContentProcessType);
static bool IsMaxProcessCountReached(const nsAString& aContentProcessType);
static void ReleaseCachedProcesses();
/**
* Picks a random content parent from |aContentParents| with a given |aOpener|
* respecting the index limit set by |aMaxContentParents|.
* Returns null if non available.
*/
static already_AddRefed<ContentParent>
MinTabSelect(const nsTArray<ContentParent*>& aContentParents,
ContentParent* aOpener,
int32_t maxContentParents);
/**
* Get or create a content process for:
* 1. browser iframe
* 2. remote xul <browser>
* 3. normal iframe
*/
static already_AddRefed<ContentParent>
GetNewOrUsedBrowserProcess(const nsAString& aRemoteType,
hal::ProcessPriority aPriority =
hal::ProcessPriority::PROCESS_PRIORITY_FOREGROUND,
ContentParent* aOpener = nullptr,
bool aPreferUsed = false);
/**
* Get or create a content process for a JS plugin. aPluginID is the id of the JS plugin
* (@see nsFakePlugin::mId). There is a maximum of one process per JS plugin.
*/
static already_AddRefed<ContentParent>
GetNewOrUsedJSPluginProcess(uint32_t aPluginID,
const hal::ProcessPriority& aPriority);
/**
* Get or create a content process for the given TabContext. aFrameElement
* should be the frame/iframe element with which this process will
* associated.
*/
static TabParent*
CreateBrowser(const TabContext& aContext,
Element* aFrameElement,
ContentParent* aOpenerContentParent,
TabParent* aSameTabGroupAs,
uint64_t aNextTabParentId);
static void GetAll(nsTArray<ContentParent*>& aArray);
static void GetAllEvenIfDead(nsTArray<ContentParent*>& aArray);
static void BroadcastStringBundle(const StringBundleDescriptor&);
const nsAString& GetRemoteType() const;
virtual void DoGetRemoteType(nsAString& aRemoteType, ErrorResult& aError) const override
{
aRemoteType = GetRemoteType();
}
enum CPIteratorPolicy {
eLive,
eAll
};
class ContentParentIterator {
private:
ContentParent* mCurrent;
CPIteratorPolicy mPolicy;
public:
ContentParentIterator(CPIteratorPolicy aPolicy, ContentParent* aCurrent)
: mCurrent(aCurrent),
mPolicy(aPolicy)
{
}
ContentParentIterator begin()
{
// Move the cursor to the first element that matches the policy.
while (mPolicy != eAll && mCurrent && !mCurrent->mIsAlive) {
mCurrent = mCurrent->LinkedListElement<ContentParent>::getNext();
}
return *this;
}
ContentParentIterator end()
{
return ContentParentIterator(mPolicy, nullptr);
}
const ContentParentIterator& operator++()
{
MOZ_ASSERT(mCurrent);
do {
mCurrent = mCurrent->LinkedListElement<ContentParent>::getNext();
} while (mPolicy != eAll && mCurrent && !mCurrent->mIsAlive);
return *this;
}
bool operator!=(const ContentParentIterator& aOther)
{
MOZ_ASSERT(mPolicy == aOther.mPolicy);
return mCurrent != aOther.mCurrent;
}
ContentParent* operator*()
{
return mCurrent;
}
};
static ContentParentIterator AllProcesses(CPIteratorPolicy aPolicy)
{
ContentParent* first =
sContentParents ? sContentParents->getFirst() : nullptr;
return ContentParentIterator(aPolicy, first);
}
static bool IgnoreIPCPrincipal();
static void NotifyUpdatedDictionaries();
static void NotifyUpdatedFonts();
#if defined(XP_WIN)
/**
* Windows helper for firing off an update window request to a plugin
* instance.
*
* aWidget - the eWindowType_plugin_ipc_chrome widget associated with
* this plugin window.
*/
static void SendAsyncUpdate(nsIWidget* aWidget);
#endif
// Let managees query if it is safe to send messages.
bool IsDestroyed() const { return !mIPCOpen; }
virtual mozilla::ipc::IPCResult RecvCreateChildProcess(const IPCTabContext& aContext,
const hal::ProcessPriority& aPriority,
const TabId& aOpenerTabId,
const TabId& aTabId,
ContentParentId* aCpId,
bool* aIsForBrowser) override;
virtual mozilla::ipc::IPCResult RecvBridgeToChildProcess(const ContentParentId& aCpId,
Endpoint<PContentBridgeParent>* aEndpoint) override;
virtual mozilla::ipc::IPCResult RecvCreateGMPService() override;
virtual mozilla::ipc::IPCResult RecvLoadPlugin(const uint32_t& aPluginId, nsresult* aRv,
uint32_t* aRunID,
Endpoint<PPluginModuleParent>* aEndpoint) override;
virtual mozilla::ipc::IPCResult RecvMaybeReloadPlugins() override;
virtual mozilla::ipc::IPCResult RecvConnectPluginBridge(const uint32_t& aPluginId,
nsresult* aRv,
Endpoint<PPluginModuleParent>* aEndpoint) override;
virtual mozilla::ipc::IPCResult RecvUngrabPointer(const uint32_t& aTime) override;
virtual mozilla::ipc::IPCResult RecvRemovePermission(const IPC::Principal& aPrincipal,
const nsCString& aPermissionType,
nsresult* aRv) override;
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(ContentParent, nsIObserver)
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_NSIOBSERVER
NS_DECL_NSIDOMGEOPOSITIONCALLBACK
NS_DECL_NSIDOMGEOPOSITIONERRORCALLBACK
NS_DECL_NSIINTERFACEREQUESTOR
/**
* MessageManagerCallback methods that we override.
*/
virtual bool DoLoadMessageManagerScript(const nsAString& aURL,
bool aRunInGlobalScope) override;
virtual nsresult DoSendAsyncMessage(JSContext* aCx,
const nsAString& aMessage,
StructuredCloneData& aData,
JS::Handle<JSObject *> aCpows,
nsIPrincipal* aPrincipal) override;
/** Notify that a tab is beginning its destruction sequence. */
static void NotifyTabDestroying(const TabId& aTabId,
const ContentParentId& aCpId);
/** Notify that a tab was destroyed during normal operation. */
void NotifyTabDestroyed(const TabId& aTabId,
bool aNotifiedDestroying);
TestShellParent* CreateTestShell();
bool DestroyTestShell(TestShellParent* aTestShell);
TestShellParent* GetTestShellSingleton();
jsipc::CPOWManager* GetCPOWManager() override;
static void
UnregisterRemoteFrame(const TabId& aTabId,
const ContentParentId& aCpId,
bool aMarkedDestroying);
void ReportChildAlreadyBlocked();
bool RequestRunToCompletion();
void UpdateCookieStatus(nsIChannel *aChannel);
bool IsAvailable() const
{
return mIsAvailable;
}
bool IsAlive() const override;
virtual bool IsForBrowser() const override
{
return mIsForBrowser;
}
virtual bool IsForJSPlugin() const override
{
return mJSPluginID != nsFakePluginTag::NOT_JSPLUGIN;
}
ContentProcessHost* Process() const
{
return mSubprocess;
}
ContentParent* Opener() const
{
return mOpener;
}
nsIContentProcessInfo* ScriptableHelper() const
{
return mScriptableHelper;
}
bool NeedsPermissionsUpdate(const nsACString& aPermissionKey) const;
/**
* Kill our subprocess and make sure it dies. Should only be used
* in emergency situations since it bypasses the normal shutdown
* process.
*
* WARNING: aReason appears in telemetry, so any new value passed in requires
* data review.
*/
void KillHard(const char* aWhy);
ContentParentId ChildID() const override { return mChildID; }
/**
* Get a user-friendly name for this ContentParent. We make no guarantees
* about this name: It might not be unique, apps can spoof special names,
* etc. So please don't use this name to make any decisions about the
* ContentParent based on the value returned here.
*/
void FriendlyName(nsAString& aName, bool aAnonymize = false);
virtual void OnChannelError() override;
virtual mozilla::ipc::IPCResult
RecvInitCrashReporter(Shmem&& aShmem, const NativeThreadId& aThreadId) override;
virtual PNeckoParent* AllocPNeckoParent() override;
virtual mozilla::ipc::IPCResult RecvPNeckoConstructor(PNeckoParent* aActor) override
{
return PContentParent::RecvPNeckoConstructor(aActor);
}
virtual PPrintingParent* AllocPPrintingParent() override;
virtual bool DeallocPPrintingParent(PPrintingParent* aActor) override;
#if defined(NS_PRINTING)
/**
* @return the PrintingParent for this ContentParent.
*/
already_AddRefed<embedding::PrintingParent> GetPrintingParent();
#endif
virtual mozilla::ipc::IPCResult
RecvInitStreamFilter(const uint64_t& aChannelId,
const nsString& aAddonId,
InitStreamFilterResolver&& aResolver) override;
virtual PChildToParentStreamParent* AllocPChildToParentStreamParent() override;
virtual bool
DeallocPChildToParentStreamParent(PChildToParentStreamParent* aActor) override;
virtual PParentToChildStreamParent*
SendPParentToChildStreamConstructor(PParentToChildStreamParent*) override;
virtual PFileDescriptorSetParent*
SendPFileDescriptorSetConstructor(const FileDescriptor&) override;
virtual PParentToChildStreamParent* AllocPParentToChildStreamParent() override;
virtual bool
DeallocPParentToChildStreamParent(PParentToChildStreamParent* aActor) override;
virtual PHalParent* AllocPHalParent() override;
virtual mozilla::ipc::IPCResult RecvPHalConstructor(PHalParent* aActor) override
{
return PContentParent::RecvPHalConstructor(aActor);
}
virtual PHeapSnapshotTempFileHelperParent*
AllocPHeapSnapshotTempFileHelperParent() override;
virtual PJavaScriptParent*
AllocPJavaScriptParent() override;
virtual mozilla::ipc::IPCResult
RecvPJavaScriptConstructor(PJavaScriptParent* aActor) override
{
return PContentParent::RecvPJavaScriptConstructor(aActor);
}
virtual PRemoteSpellcheckEngineParent* AllocPRemoteSpellcheckEngineParent() override;
virtual mozilla::ipc::IPCResult RecvRecordingDeviceEvents(const nsString& aRecordingStatus,
const nsString& aPageURL,
const bool& aIsAudio,
const bool& aIsVideo) override;
bool CycleCollectWithLogs(bool aDumpAllTraces,
nsICycleCollectorLogSink* aSink,
nsIDumpGCAndCCLogsCallback* aCallback);
virtual mozilla::ipc::IPCResult RecvUnregisterRemoteFrame(const TabId& aTabId,
const ContentParentId& aCpId,
const bool& aMarkedDestroying) override;
virtual mozilla::ipc::IPCResult RecvNotifyTabDestroying(const TabId& aTabId,
const ContentParentId& aCpId) override;
nsTArray<TabContext> GetManagedTabContext();
virtual POfflineCacheUpdateParent*
AllocPOfflineCacheUpdateParent(const URIParams& aManifestURI,
const URIParams& aDocumentURI,
const PrincipalInfo& aLoadingPrincipalInfo,
const bool& aStickDocument) override;
virtual mozilla::ipc::IPCResult
RecvPOfflineCacheUpdateConstructor(POfflineCacheUpdateParent* aActor,
const URIParams& aManifestURI,
const URIParams& aDocumentURI,
const PrincipalInfo& aLoadingPrincipal,
const bool& stickDocument) override;
virtual bool
DeallocPOfflineCacheUpdateParent(POfflineCacheUpdateParent* aActor) override;
virtual mozilla::ipc::IPCResult RecvSetOfflinePermission(const IPC::Principal& principal) override;
virtual mozilla::ipc::IPCResult RecvFinishShutdown() override;
void MaybeInvokeDragSession(TabParent* aParent);
virtual PContentPermissionRequestParent*
AllocPContentPermissionRequestParent(const InfallibleTArray<PermissionRequest>& aRequests,
const IPC::Principal& aPrincipal,
const bool& aIsTrusted,
const TabId& aTabId) override;
virtual bool
DeallocPContentPermissionRequestParent(PContentPermissionRequestParent* actor) override;
virtual bool HandleWindowsMessages(const Message& aMsg) const override;
void ForkNewProcess(bool aBlocking);
virtual mozilla::ipc::IPCResult
RecvCreateWindow(PBrowserParent* aThisTabParent,
PBrowserParent* aNewTab,
layout::PRenderFrameParent* aRenderFrame,
const uint32_t& aChromeFlags,
const bool& aCalledFromJS,
const bool& aPositionSpecified,
const bool& aSizeSpecified,
const OptionalURIParams& aURIToLoad,
const nsCString& aFeatures,
const nsCString& aBaseURI,
const float& aFullZoom,
const IPC::Principal& aTriggeringPrincipal,
const uint32_t& aReferrerPolicy,
CreateWindowResolver&& aResolve) override;
virtual mozilla::ipc::IPCResult RecvCreateWindowInDifferentProcess(
PBrowserParent* aThisTab,
const uint32_t& aChromeFlags,
const bool& aCalledFromJS,
const bool& aPositionSpecified,
const bool& aSizeSpecified,
const OptionalURIParams& aURIToLoad,
const nsCString& aFeatures,
const nsCString& aBaseURI,
const float& aFullZoom,
const nsString& aName,
const IPC::Principal& aTriggeringPrincipal,
const uint32_t& aReferrerPolicy) override;
static bool AllocateLayerTreeId(TabParent* aTabParent, layers::LayersId* aId);
static void
BroadcastBlobURLRegistration(const nsACString& aURI,
BlobImpl* aBlobImpl,
nsIPrincipal* aPrincipal,
ContentParent* aIgnoreThisCP = nullptr);
static void
BroadcastBlobURLUnregistration(const nsACString& aURI,
ContentParent* aIgnoreThisCP = nullptr);
virtual mozilla::ipc::IPCResult
RecvStoreAndBroadcastBlobURLRegistration(const nsCString& aURI,
const IPCBlob& aBlob,
const Principal& aPrincipal) override;
virtual mozilla::ipc::IPCResult
RecvUnstoreAndBroadcastBlobURLUnregistration(const nsCString& aURI) override;
virtual mozilla::ipc::IPCResult
RecvGetA11yContentId(uint32_t* aContentId) override;
virtual mozilla::ipc::IPCResult
RecvA11yHandlerControl(const uint32_t& aPid,
const IHandlerControlHolder& aHandlerControl) override;
virtual int32_t Pid() const override;
// PURLClassifierParent.
virtual PURLClassifierParent*
AllocPURLClassifierParent(const Principal& aPrincipal,
const bool& aUseTrackingProtection,
bool* aSuccess) override;
virtual mozilla::ipc::IPCResult
RecvPURLClassifierConstructor(PURLClassifierParent* aActor,
const Principal& aPrincipal,
const bool& aUseTrackingProtection,
bool* aSuccess) override;
// PURLClassifierLocalParent.
virtual PURLClassifierLocalParent*
AllocPURLClassifierLocalParent(const URIParams& aURI,
const nsCString& aTables) override;
virtual mozilla::ipc::IPCResult
RecvPURLClassifierLocalConstructor(PURLClassifierLocalParent* aActor,
const URIParams& aURI,
const nsCString& aTables) override;
virtual PLoginReputationParent*
AllocPLoginReputationParent(const URIParams& aURI) override;
virtual mozilla::ipc::IPCResult
RecvPLoginReputationConstructor(PLoginReputationParent* aActor,
const URIParams& aURI) override;
virtual bool
DeallocPLoginReputationParent(PLoginReputationParent* aActor) override;
virtual bool SendActivate(PBrowserParent* aTab) override
{
return PContentParent::SendActivate(aTab);
}
virtual bool SendDeactivate(PBrowserParent* aTab) override
{
return PContentParent::SendDeactivate(aTab);
}
virtual bool
DeallocPURLClassifierLocalParent(PURLClassifierLocalParent* aActor) override;
virtual bool
DeallocPURLClassifierParent(PURLClassifierParent* aActor) override;
virtual mozilla::ipc::IPCResult
RecvClassifyLocal(const URIParams& aURI,
const nsCString& aTables,
nsresult* aRv,
nsTArray<nsCString>* aResults) override;
// Use the PHangMonitor channel to ask the child to repaint a tab.
void PaintTabWhileInterruptingJS(TabParent* aTabParent, bool aForceRepaint, uint64_t aLayerObserverEpoch);
// This function is called when we are about to load a document from an
// HTTP(S), FTP or wyciwyg channel for a content process. It is a useful
// place to start to kick off work as early as possible in response to such
// document loads.
nsresult AboutToLoadHttpFtpWyciwygDocumentForChild(nsIChannel* aChannel);
nsresult TransmitPermissionsForPrincipal(nsIPrincipal* aPrincipal);
void OnCompositorDeviceReset() override;
virtual PClientOpenWindowOpParent*
AllocPClientOpenWindowOpParent(const ClientOpenWindowArgs& aArgs) override;
virtual bool
DeallocPClientOpenWindowOpParent(PClientOpenWindowOpParent* aActor) override;
static hal::ProcessPriority GetInitialProcessPriority(Element* aFrameElement);
// Control the priority of the IPC messages for input events.
void SetInputPriorityEventEnabled(bool aEnabled);
bool IsInputPriorityEventEnabled()
{
return mIsInputPriorityEventEnabled;
}
static bool IsInputEventQueueSupported();
protected:
void OnChannelConnected(int32_t pid) override;
virtual void ActorDestroy(ActorDestroyReason why) override;
bool ShouldContinueFromReplyTimeout() override;
void OnVarChanged(const GfxVarUpdate& aVar) override;
void OnCompositorUnexpectedShutdown() override;
private:
/**
* A map of the remote content process type to a list of content parents
* currently available to host *new* tabs/frames of that type.
*
* If a content process is identified as troubled or dead, it will be
* removed from this list, but will still be in the sContentParents list for
* the GetAll/GetAllEvenIfDead APIs.
*/
static nsClassHashtable<nsStringHashKey, nsTArray<ContentParent*>>* sBrowserContentParents;
static nsTArray<ContentParent*>* sPrivateContent;
static nsDataHashtable<nsUint32HashKey, ContentParent*> *sJSPluginContentParents;
static StaticAutoPtr<LinkedList<ContentParent> > sContentParents;
static ContentBridgeParent* CreateContentBridgeParent(const TabContext& aContext,
const hal::ProcessPriority& aPriority,
const TabId& aOpenerTabId,
const TabId& aTabId);
// Hide the raw constructor methods since we don't want client code
// using them.
virtual PBrowserParent* SendPBrowserConstructor(
PBrowserParent* actor,
const TabId& aTabId,
const TabId& aSameTabGroupsAs,
const IPCTabContext& context,
const uint32_t& chromeFlags,
const ContentParentId& aCpId,
const bool& aIsForBrowser) override;
using PContentParent::SendPTestShellConstructor;
// Set aLoadUri to true to load aURIToLoad and to false to only create the
// window. aURIToLoad should always be provided, if available, to ensure
// compatibility with GeckoView.
mozilla::ipc::IPCResult
CommonCreateWindow(PBrowserParent* aThisTab,
bool aSetOpener,
const uint32_t& aChromeFlags,
const bool& aCalledFromJS,
const bool& aPositionSpecified,
const bool& aSizeSpecified,
nsIURI* aURIToLoad,
const nsCString& aFeatures,
const nsCString& aBaseURI,
const float& aFullZoom,
uint64_t aNextTabParentId,
const nsString& aName,
nsresult& aResult,
nsCOMPtr<nsITabParent>& aNewTabParent,
bool* aWindowIsNew,
nsIPrincipal* aTriggeringPrincipal,
uint32_t aReferrerPolicy,
bool aLoadUri);
FORWARD_SHMEM_ALLOCATOR_TO(PContentParent)
explicit ContentParent(int32_t aPluginID)
: ContentParent(nullptr, EmptyString(), aPluginID)
{}
ContentParent(ContentParent* aOpener,
const nsAString& aRemoteType)
: ContentParent(aOpener, aRemoteType, nsFakePluginTag::NOT_JSPLUGIN)
{}
ContentParent(ContentParent* aOpener,
const nsAString& aRemoteType,
int32_t aPluginID);
// Launch the subprocess and associated initialization.
// Returns false if the process fails to start.
bool LaunchSubprocess(hal::ProcessPriority aInitialPriority = hal::PROCESS_PRIORITY_FOREGROUND);
// Common initialization after sub process launch.
void InitInternal(ProcessPriority aPriority);
virtual ~ContentParent();
void Init();
// Some information could be sent to content very early, it
// should be send from this function. This function should only be
// called after the process has been transformed to browser.
void ForwardKnownInfo();
/**
* We might want to reuse barely used content processes if certain criteria are met.
*/
bool TryToRecycle();
/**
* Removing it from the static array so it won't be returned for new tabs in
* GetNewOrUsedBrowserProcess.
*/
void RemoveFromList();
/**
* Decide whether the process should be kept alive even when it would normally
* be shut down, for example when all its tabs are closed.
*/
bool ShouldKeepProcessAlive() const;
/**
* Mark this ContentParent as "troubled". This means that it is still alive,
* but it won't be returned for new tabs in GetNewOrUsedBrowserProcess.
*/
void MarkAsTroubled();
/**
* Mark this ContentParent as dead for the purposes of Get*().
* This method is idempotent.
*/
void MarkAsDead();
/**
* How we will shut down this ContentParent and its subprocess.
*/
enum ShutDownMethod
{
// Send a shutdown message and wait for FinishShutdown call back.
SEND_SHUTDOWN_MESSAGE,
// Close the channel ourselves and let the subprocess clean up itself.
CLOSE_CHANNEL,
// Close the channel with error and let the subprocess clean up itself.
CLOSE_CHANNEL_WITH_ERROR,
};
/**
* Exit the subprocess and vamoose. After this call IsAlive()
* will return false and this ContentParent will not be returned
* by the Get*() funtions. However, the shutdown sequence itself
* may be asynchronous.
*
* If aMethod is CLOSE_CHANNEL_WITH_ERROR and this is the first call
* to ShutDownProcess, then we'll close our channel using CloseWithError()
* rather than vanilla Close(). CloseWithError() indicates to IPC that this
* is an abnormal shutdown (e.g. a crash).
*/
void ShutDownProcess(ShutDownMethod aMethod);
// Perform any steps necesssary to gracefully shtudown the message
// manager and null out mMessageManager.
void ShutDownMessageManager();
// Start the force-kill timer on shutdown.
void StartForceKillTimer();
void OnGenerateMinidumpComplete(bool aDumpResult);
// Ensure that the permissions for the giben Permission key are set in the
// content process.
//
// See nsIPermissionManager::GetPermissionsForKey for more information on
// these keys.
void EnsurePermissionsByKey(const nsCString& aKey);
static void ForceKillTimerCallback(nsITimer* aTimer, void* aClosure);
static bool AllocateLayerTreeId(ContentParent* aContent,
TabParent* aTopLevel, const TabId& aTabId,
layers::LayersId* aId);
/**
* Get or create the corresponding content parent array to |aContentProcessType|.
*/
static nsTArray<ContentParent*>& GetOrCreatePool(const nsAString& aContentProcessType);
virtual mozilla::ipc::IPCResult RecvInitBackground(Endpoint<mozilla::ipc::PBackgroundParent>&& aEndpoint) override;
mozilla::ipc::IPCResult RecvAddMemoryReport(const MemoryReport& aReport) override;
mozilla::ipc::IPCResult RecvFinishMemoryReport(const uint32_t& aGeneration) override;
mozilla::ipc::IPCResult RecvAddPerformanceMetrics(const nsID& aID, nsTArray<PerformanceInfo>&& aMetrics) override;
virtual bool
DeallocPJavaScriptParent(mozilla::jsipc::PJavaScriptParent*) override;
virtual bool
DeallocPRemoteSpellcheckEngineParent(PRemoteSpellcheckEngineParent*) override;
virtual PBrowserParent* AllocPBrowserParent(const TabId& aTabId,
const TabId& aSameTabGroupAs,
const IPCTabContext& aContext,
const uint32_t& aChromeFlags,
const ContentParentId& aCpId,
const bool& aIsForBrowser) override;
virtual bool DeallocPBrowserParent(PBrowserParent* frame) override;
virtual mozilla::ipc::IPCResult
RecvPBrowserConstructor(PBrowserParent* actor,
const TabId& tabId,
const TabId& sameTabGroupAs,
const IPCTabContext& context,
const uint32_t& chromeFlags,
const ContentParentId& cpId,
const bool& isForBrowser) override;
virtual PIPCBlobInputStreamParent*
SendPIPCBlobInputStreamConstructor(PIPCBlobInputStreamParent* aActor,
const nsID& aID,
const uint64_t& aSize) override;
virtual PIPCBlobInputStreamParent*
AllocPIPCBlobInputStreamParent(const nsID& aID,
const uint64_t& aSize) override;
virtual bool
DeallocPIPCBlobInputStreamParent(PIPCBlobInputStreamParent* aActor) override;
virtual mozilla::ipc::IPCResult RecvIsSecureURI(const uint32_t& aType, const URIParams& aURI,
const uint32_t& aFlags,
const OriginAttributes& aOriginAttributes,
bool* aIsSecureURI) override;
virtual mozilla::ipc::IPCResult RecvAccumulateMixedContentHSTS(const URIParams& aURI,
const bool& aActive,
const OriginAttributes& aOriginAttributes) override;
virtual bool DeallocPHalParent(PHalParent*) override;
virtual bool
DeallocPHeapSnapshotTempFileHelperParent(PHeapSnapshotTempFileHelperParent*) override;
virtual PCycleCollectWithLogsParent*
AllocPCycleCollectWithLogsParent(const bool& aDumpAllTraces,
const FileDescriptor& aGCLog,
const FileDescriptor& aCCLog) override;
virtual bool
DeallocPCycleCollectWithLogsParent(PCycleCollectWithLogsParent* aActor) override;
virtual PTestShellParent* AllocPTestShellParent() override;
virtual bool DeallocPTestShellParent(PTestShellParent* shell) override;
virtual PScriptCacheParent*
AllocPScriptCacheParent(const FileDescOrError& cacheFile,
const bool& wantCacheData) override;
virtual bool DeallocPScriptCacheParent(PScriptCacheParent* shell) override;
virtual bool DeallocPNeckoParent(PNeckoParent* necko) override;
virtual PPSMContentDownloaderParent*
AllocPPSMContentDownloaderParent(const uint32_t& aCertType) override;
virtual bool
DeallocPPSMContentDownloaderParent(PPSMContentDownloaderParent* aDownloader) override;
virtual PExternalHelperAppParent*
AllocPExternalHelperAppParent(const OptionalURIParams& aUri,
const nsCString& aMimeContentType,
const nsCString& aContentDisposition,
const uint32_t& aContentDispositionHint,
const nsString& aContentDispositionFilename,
const bool& aForceSave,
const int64_t& aContentLength,
const bool& aWasFileChannel,
const OptionalURIParams& aReferrer,
PBrowserParent* aBrowser) override;
virtual bool
DeallocPExternalHelperAppParent(PExternalHelperAppParent* aService) override;
virtual PHandlerServiceParent* AllocPHandlerServiceParent() override;
virtual bool DeallocPHandlerServiceParent(PHandlerServiceParent*) override;
virtual PMediaParent* AllocPMediaParent() override;
virtual bool DeallocPMediaParent(PMediaParent* aActor) override;
virtual PPresentationParent* AllocPPresentationParent() override;
virtual bool DeallocPPresentationParent(PPresentationParent* aActor) override;
virtual mozilla::ipc::IPCResult RecvPPresentationConstructor(PPresentationParent* aActor) override;
virtual PSpeechSynthesisParent* AllocPSpeechSynthesisParent() override;
virtual bool
DeallocPSpeechSynthesisParent(PSpeechSynthesisParent* aActor) override;
virtual mozilla::ipc::IPCResult
RecvPSpeechSynthesisConstructor(PSpeechSynthesisParent* aActor) override;
virtual PWebBrowserPersistDocumentParent*
AllocPWebBrowserPersistDocumentParent(PBrowserParent* aBrowser,
const uint64_t& aOuterWindowID) override;
virtual bool
DeallocPWebBrowserPersistDocumentParent(PWebBrowserPersistDocumentParent* aActor) override;
virtual mozilla::ipc::IPCResult RecvGetGfxVars(InfallibleTArray<GfxVarUpdate>* aVars) override;
virtual mozilla::ipc::IPCResult RecvReadFontList(InfallibleTArray<FontListEntry>* retValue) override;
virtual mozilla::ipc::IPCResult RecvSetClipboard(const IPCDataTransfer& aDataTransfer,
const bool& aIsPrivateData,
const IPC::Principal& aRequestingPrincipal,
const uint32_t& aContentPolicyType,
const int32_t& aWhichClipboard) override;
virtual mozilla::ipc::IPCResult RecvGetClipboard(nsTArray<nsCString>&& aTypes,
const int32_t& aWhichClipboard,
IPCDataTransfer* aDataTransfer) override;
virtual mozilla::ipc::IPCResult RecvEmptyClipboard(const int32_t& aWhichClipboard) override;
virtual mozilla::ipc::IPCResult RecvClipboardHasType(nsTArray<nsCString>&& aTypes,
const int32_t& aWhichClipboard,
bool* aHasType) override;
virtual mozilla::ipc::IPCResult RecvGetExternalClipboardFormats(const int32_t& aWhichClipboard,
const bool& aPlainTextOnly,
nsTArray<nsCString>* aTypes) override;
virtual mozilla::ipc::IPCResult RecvPlaySound(const URIParams& aURI) override;
virtual mozilla::ipc::IPCResult RecvBeep() override;
virtual mozilla::ipc::IPCResult RecvPlayEventSound(const uint32_t& aEventId) override;
virtual mozilla::ipc::IPCResult RecvGetSystemColors(const uint32_t& colorsCount,
InfallibleTArray<uint32_t>* colors) override;
virtual mozilla::ipc::IPCResult RecvGetIconForExtension(const nsCString& aFileExt,
const uint32_t& aIconSize,
InfallibleTArray<uint8_t>* bits) override;
virtual mozilla::ipc::IPCResult RecvGetShowPasswordSetting(bool* showPassword) override;
virtual mozilla::ipc::IPCResult RecvStartVisitedQuery(const URIParams& uri) override;
virtual mozilla::ipc::IPCResult RecvVisitURI(const URIParams& uri,
const OptionalURIParams& referrer,
const uint32_t& flags) override;
virtual mozilla::ipc::IPCResult RecvSetURITitle(const URIParams& uri,
const nsString& title) override;
bool HasNotificationPermission(const IPC::Principal& aPrincipal);
virtual mozilla::ipc::IPCResult RecvShowAlert(nsIAlertNotification* aAlert) override;
virtual mozilla::ipc::IPCResult RecvCloseAlert(const nsString& aName,
const IPC::Principal& aPrincipal) override;
virtual mozilla::ipc::IPCResult RecvDisableNotifications(const IPC::Principal& aPrincipal) override;
virtual mozilla::ipc::IPCResult RecvOpenNotificationSettings(const IPC::Principal& aPrincipal) override;
virtual mozilla::ipc::IPCResult RecvLoadURIExternal(const URIParams& uri,
PBrowserParent* windowContext) override;
virtual mozilla::ipc::IPCResult RecvExtProtocolChannelConnectParent(const uint32_t& registrarId) override;
virtual mozilla::ipc::IPCResult RecvSyncMessage(const nsString& aMsg,
const ClonedMessageData& aData,
InfallibleTArray<CpowEntry>&& aCpows,
const IPC::Principal& aPrincipal,
nsTArray<StructuredCloneData>* aRetvals) override;
virtual mozilla::ipc::IPCResult RecvRpcMessage(const nsString& aMsg,
const ClonedMessageData& aData,
InfallibleTArray<CpowEntry>&& aCpows,
const IPC::Principal& aPrincipal,
nsTArray<StructuredCloneData>* aRetvals) override;
virtual mozilla::ipc::IPCResult RecvAsyncMessage(const nsString& aMsg,
InfallibleTArray<CpowEntry>&& aCpows,
const IPC::Principal& aPrincipal,
const ClonedMessageData& aData) override;
virtual mozilla::ipc::IPCResult RecvAddGeolocationListener(const IPC::Principal& aPrincipal,
const bool& aHighAccuracy) override;
virtual mozilla::ipc::IPCResult RecvRemoveGeolocationListener() override;
virtual mozilla::ipc::IPCResult RecvSetGeolocationHigherAccuracy(const bool& aEnable) override;
virtual mozilla::ipc::IPCResult RecvConsoleMessage(const nsString& aMessage) override;
virtual mozilla::ipc::IPCResult RecvScriptError(const nsString& aMessage,
const nsString& aSourceName,
const nsString& aSourceLine,
const uint32_t& aLineNumber,
const uint32_t& aColNumber,
const uint32_t& aFlags,
const nsCString& aCategory,
const bool& aIsFromPrivateWindow) override;
virtual mozilla::ipc::IPCResult RecvScriptErrorWithStack(const nsString& aMessage,
const nsString& aSourceName,
const nsString& aSourceLine,
const uint32_t& aLineNumber,
const uint32_t& aColNumber,
const uint32_t& aFlags,
const nsCString& aCategory,
const bool& aIsFromPrivateWindow,
const ClonedMessageData& aStack) override;
private:
mozilla::ipc::IPCResult RecvScriptErrorInternal(const nsString& aMessage,
const nsString& aSourceName,
const nsString& aSourceLine,
const uint32_t& aLineNumber,
const uint32_t& aColNumber,
const uint32_t& aFlags,
const nsCString& aCategory,
const bool& aIsFromPrivateWindow,
const ClonedMessageData* aStack = nullptr);
public:
virtual mozilla::ipc::IPCResult RecvPrivateDocShellsExist(const bool& aExist) override;
virtual mozilla::ipc::IPCResult RecvFirstIdle() override;
virtual mozilla::ipc::IPCResult RecvDeviceReset() override;
virtual mozilla::ipc::IPCResult RecvKeywordToURI(const nsCString& aKeyword,
nsString* aProviderName,
RefPtr<nsIInputStream>* aPostData,
OptionalURIParams* aURI) override;
virtual mozilla::ipc::IPCResult RecvNotifyKeywordSearchLoading(const nsString &aProvider,
const nsString &aKeyword) override;
virtual mozilla::ipc::IPCResult RecvCopyFavicon(const URIParams& aOldURI,
const URIParams& aNewURI,
const IPC::Principal& aLoadingPrincipal,
const bool& aInPrivateBrowsing) override;
virtual void ProcessingError(Result aCode, const char* aMsgName) override;
virtual mozilla::ipc::IPCResult RecvAllocateLayerTreeId(const ContentParentId& aCpId,
const TabId& aTabId,
layers::LayersId* aId) override;
virtual mozilla::ipc::IPCResult RecvDeallocateLayerTreeId(const ContentParentId& aCpId,
const layers::LayersId& aId) override;
virtual mozilla::ipc::IPCResult RecvGraphicsError(const nsCString& aError) override;
virtual mozilla::ipc::IPCResult
RecvBeginDriverCrashGuard(const uint32_t& aGuardType,
bool* aOutCrashed) override;
virtual mozilla::ipc::IPCResult RecvEndDriverCrashGuard(const uint32_t& aGuardType) override;
virtual mozilla::ipc::IPCResult RecvAddIdleObserver(const uint64_t& observerId,
const uint32_t& aIdleTimeInS) override;
virtual mozilla::ipc::IPCResult RecvRemoveIdleObserver(const uint64_t& observerId,
const uint32_t& aIdleTimeInS) override;
virtual mozilla::ipc::IPCResult
RecvBackUpXResources(const FileDescriptor& aXSocketFd) override;
virtual mozilla::ipc::IPCResult
RecvRequestAnonymousTemporaryFile(const uint64_t& aID) override;
virtual mozilla::ipc::IPCResult
RecvCreateAudioIPCConnection(CreateAudioIPCConnectionResolver&& aResolver) override;
virtual mozilla::ipc::IPCResult
RecvKeygenProcessValue(const nsString& oldValue, const nsString& challenge,
const nsString& keytype, const nsString& keyparams,
nsString* newValue) override;
virtual mozilla::ipc::IPCResult
RecvKeygenProvideContent(nsString* aAttribute,
nsTArray<nsString>* aContent) override;
virtual PFileDescriptorSetParent*
AllocPFileDescriptorSetParent(const mozilla::ipc::FileDescriptor&) override;
virtual bool
DeallocPFileDescriptorSetParent(PFileDescriptorSetParent*) override;
virtual PWebrtcGlobalParent* AllocPWebrtcGlobalParent() override;
virtual bool DeallocPWebrtcGlobalParent(PWebrtcGlobalParent *aActor) override;
virtual mozilla::ipc::IPCResult RecvUpdateDropEffect(const uint32_t& aDragAction,
const uint32_t& aDropEffect) override;
virtual mozilla::ipc::IPCResult RecvShutdownProfile(const nsCString& aProfile) override;
virtual mozilla::ipc::IPCResult RecvGetGraphicsDeviceInitData(ContentDeviceData* aOut) override;
virtual mozilla::ipc::IPCResult RecvGetAndroidSystemInfo(AndroidSystemInfo* aInfo) override;
virtual mozilla::ipc::IPCResult RecvNotifyBenchmarkResult(const nsString& aCodecName,
const uint32_t& aDecodeFPS) override;
virtual mozilla::ipc::IPCResult RecvNotifyPushObservers(const nsCString& aScope,
const IPC::Principal& aPrincipal,
const nsString& aMessageId) override;
virtual mozilla::ipc::IPCResult RecvNotifyPushObserversWithData(const nsCString& aScope,
const IPC::Principal& aPrincipal,
const nsString& aMessageId,
InfallibleTArray<uint8_t>&& aData) override;
virtual mozilla::ipc::IPCResult RecvNotifyPushSubscriptionChangeObservers(const nsCString& aScope,
const IPC::Principal& aPrincipal) override;
virtual mozilla::ipc::IPCResult RecvNotifyPushSubscriptionModifiedObservers(const nsCString& aScope,
const IPC::Principal& aPrincipal) override;
virtual mozilla::ipc::IPCResult RecvNotifyLowMemory() override;
virtual mozilla::ipc::IPCResult RecvGetFilesRequest(const nsID& aID,
const nsString& aDirectoryPath,
const bool& aRecursiveFlag) override;
virtual mozilla::ipc::IPCResult RecvDeleteGetFilesRequest(const nsID& aID) override;
virtual mozilla::ipc::IPCResult
RecvFileCreationRequest(const nsID& aID, const nsString& aFullPath,
const nsString& aType, const nsString& aName,
const bool& aLastModifiedPassed,
const int64_t& aLastModified,
const bool& aExistenceCheck,
const bool& aIsFromNsIFile) override;
virtual mozilla::ipc::IPCResult RecvAccumulateChildHistograms(
InfallibleTArray<HistogramAccumulation>&& aAccumulations) override;
virtual mozilla::ipc::IPCResult RecvAccumulateChildKeyedHistograms(
InfallibleTArray<KeyedHistogramAccumulation>&& aAccumulations) override;
virtual mozilla::ipc::IPCResult RecvUpdateChildScalars(
InfallibleTArray<ScalarAction>&& aScalarActions) override;
virtual mozilla::ipc::IPCResult RecvUpdateChildKeyedScalars(
InfallibleTArray<KeyedScalarAction>&& aScalarActions) override;
virtual mozilla::ipc::IPCResult RecvRecordChildEvents(
nsTArray<ChildEventData>&& events) override;
virtual mozilla::ipc::IPCResult RecvRecordDiscardedData(
const DiscardedData& aDiscardedData) override;
virtual mozilla::ipc::IPCResult RecvBHRThreadHang(
const HangDetails& aHangDetails) override;
// Notify the ContentChild to enable the input event prioritization when
// initializing.
void MaybeEnableRemoteInputEventQueue();
public:
void SendGetFilesResponseAndForget(const nsID& aID,
const GetFilesResponseResult& aResult);
bool SendRequestMemoryReport(const uint32_t& aGeneration,
const bool& aAnonymize,
const bool& aMinimizeMemoryUsage,
const MaybeFileDesc& aDMDFile) override;
bool CanCommunicateWith(ContentParentId aOtherProcess);
private:
// If you add strong pointers to cycle collected objects here, be sure to
// release these objects in ShutDownProcess. See the comment there for more
// details.
ContentProcessHost* mSubprocess;
const TimeStamp mLaunchTS; // used to calculate time to start content process
TimeStamp mActivateTS;
ContentParent* mOpener;
nsString mRemoteType;
ContentParentId mChildID;
int32_t mGeolocationWatchID;
// This contains the id for the JS plugin (@see nsFakePluginTag) if this is the
// ContentParent for a process containing iframes for that JS plugin.
// If this is not a ContentParent for a JS plugin then it contains the value
// nsFakePluginTag::NOT_JSPLUGIN.
int32_t mJSPluginID;
nsCString mKillHardAnnotation;
// After we initiate shutdown, we also start a timer to ensure
// that even content processes that are 100% blocked (say from
// SIGSTOP), are still killed eventually. This task enforces that
// timer.
nsCOMPtr<nsITimer> mForceKillTimer;
// How many tabs we're waiting to finish their destruction
// sequence. Precisely, how many TabParents have called
// NotifyTabDestroying() but not called NotifyTabDestroyed().
int32_t mNumDestroyingTabs;
// True only while this process is in "good health" and may be used for
// new remote tabs.
bool mIsAvailable;
// True only while remote content is being actively used from this process.
// After mIsAlive goes to false, some previously scheduled IPC traffic may
// still pass through.
bool mIsAlive;
bool mIsForBrowser;
// These variables track whether we've called Close() and KillHard() on our
// channel.
bool mCalledClose;
bool mCalledKillHard;
bool mCreatedPairedMinidumps;
bool mShutdownPending;
bool mIPCOpen;
// True if the input event queue on the main thread of the content process is
// enabled.
bool mIsRemoteInputEventQueueEnabled;
// True if we send input events with input priority. Otherwise, we send input
// events with normal priority.
bool mIsInputPriorityEventEnabled;
RefPtr<nsConsoleService> mConsoleService;
nsConsoleService* GetConsoleService();
nsCOMPtr<nsIContentProcessInfo> mScriptableHelper;
nsTArray<nsCOMPtr<nsIObserver>> mIdleListeners;
#ifdef MOZ_X11
// Dup of child's X socket, used to scope its resources to this
// object instead of the child process's lifetime.
ScopedClose mChildXSocketFdDup;
#endif
PProcessHangMonitorParent* mHangMonitorActor;
UniquePtr<gfx::DriverCrashGuard> mDriverCrashGuard;
UniquePtr<MemoryReportRequestHost> mMemoryReportRequest;
#if defined(XP_LINUX) && defined(MOZ_CONTENT_SANDBOX)
mozilla::UniquePtr<SandboxBroker> mSandboxBroker;
static mozilla::UniquePtr<SandboxBrokerPolicyFactory>
sSandboxBrokerPolicyFactory;
#endif
#ifdef NS_PRINTING
RefPtr<embedding::PrintingParent> mPrintingParent;
#endif
// This hashtable is used to run GetFilesHelper objects in the parent process.
// GetFilesHelper can be aborted by receiving RecvDeleteGetFilesRequest.
nsRefPtrHashtable<nsIDHashKey, GetFilesHelper> mGetFilesPendingRequests;
nsTHashtable<nsCStringHashKey> mActivePermissionKeys;
nsTArray<nsCString> mBlobURLs;
UniquePtr<mozilla::ipc::CrashReporterHost> mCrashReporter;
static uint64_t sNextTabParentId;
static nsDataHashtable<nsUint64HashKey, TabParent*> sNextTabParents;
};
} // namespace dom
} // namespace mozilla
class ParentIdleListener : public nsIObserver
{
friend class mozilla::dom::ContentParent;
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
ParentIdleListener(mozilla::dom::ContentParent* aParent,
uint64_t aObserver, uint32_t aTime)
: mParent(aParent), mObserver(aObserver), mTime(aTime)
{}
private:
virtual ~ParentIdleListener() {}
RefPtr<mozilla::dom::ContentParent> mParent;
uint64_t mObserver;
uint32_t mTime;
};
#endif // mozilla_dom_ContentParent_h