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gecko/dom/ipc/ContentChild.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set sw=4 ts=8 et 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/. */
#ifdef MOZ_WIDGET_GTK
#include <gtk/gtk.h>
#endif
#ifdef MOZ_WIDGET_QT
#include "nsQAppInstance.h"
#endif
#include "ContentChild.h"
#include "BlobChild.h"
#include "CrashReporterChild.h"
#include "TabChild.h"
#include "mozilla/Attributes.h"
#ifdef ACCESSIBILITY
#include "mozilla/a11y/DocAccessibleChild.h"
#endif
#include "mozilla/Preferences.h"
#include "mozilla/dom/ContentBridgeChild.h"
#include "mozilla/dom/ContentBridgeParent.h"
#include "mozilla/dom/DOMStorageIPC.h"
#include "mozilla/dom/ExternalHelperAppChild.h"
#include "mozilla/dom/PCrashReporterChild.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/asmjscache/AsmJSCache.h"
#include "mozilla/dom/asmjscache/PAsmJSCacheEntryChild.h"
#include "mozilla/dom/nsIContentChild.h"
#include "mozilla/hal_sandbox/PHalChild.h"
#include "mozilla/ipc/BackgroundChild.h"
#include "mozilla/ipc/FileDescriptorSetChild.h"
#include "mozilla/ipc/FileDescriptorUtils.h"
#include "mozilla/ipc/GeckoChildProcessHost.h"
#include "mozilla/ipc/TestShellChild.h"
#include "mozilla/layers/CompositorChild.h"
#include "mozilla/layers/ImageBridgeChild.h"
#include "mozilla/layers/PCompositorChild.h"
#include "mozilla/layers/SharedBufferManagerChild.h"
#include "mozilla/net/NeckoChild.h"
#include "mozilla/plugins/PluginModuleParent.h"
#if defined(MOZ_CONTENT_SANDBOX)
#if defined(XP_WIN)
#define TARGET_SANDBOX_EXPORTS
#include "mozilla/sandboxTarget.h"
#include "nsDirectoryServiceDefs.h"
#elif defined(XP_LINUX) || defined(XP_MACOSX)
#include "mozilla/Sandbox.h"
#endif
#endif
#include "mozilla/unused.h"
#include "mozInlineSpellChecker.h"
#include "nsIConsoleListener.h"
#include "nsICycleCollectorListener.h"
#include "nsIIPCBackgroundChildCreateCallback.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIMemoryReporter.h"
#include "nsIMemoryInfoDumper.h"
#include "nsIMutable.h"
#include "nsIObserverService.h"
#include "nsIScriptSecurityManager.h"
#include "nsScreenManagerProxy.h"
#include "nsMemoryInfoDumper.h"
#include "nsServiceManagerUtils.h"
#include "nsStyleSheetService.h"
#include "nsXULAppAPI.h"
#include "nsIScriptError.h"
#include "nsIConsoleService.h"
#include "nsJSEnvironment.h"
#include "SandboxHal.h"
#include "nsDebugImpl.h"
#include "nsHashPropertyBag.h"
#include "nsLayoutStylesheetCache.h"
#include "nsIJSRuntimeService.h"
#include "nsThreadManager.h"
#include "nsAnonymousTemporaryFile.h"
#include "nsISpellChecker.h"
#include "nsClipboardProxy.h"
#include "IHistory.h"
#include "nsNetUtil.h"
#include "base/message_loop.h"
#include "base/process_util.h"
#include "base/task.h"
#include "nsChromeRegistryContent.h"
#include "nsFrameMessageManager.h"
#include "nsIGeolocationProvider.h"
#include "mozilla/dom/PMemoryReportRequestChild.h"
#include "mozilla/dom/PCycleCollectWithLogsChild.h"
#ifdef MOZ_PERMISSIONS
#include "nsIScriptSecurityManager.h"
#include "nsPermission.h"
#include "nsPermissionManager.h"
#endif
#include "PermissionMessageUtils.h"
#if defined(MOZ_WIDGET_ANDROID)
#include "APKOpen.h"
#endif
#if defined(MOZ_WIDGET_GONK)
#include "nsVolume.h"
#include "nsVolumeService.h"
#include "SpeakerManagerService.h"
#endif
#ifdef XP_WIN
#include <process.h>
#define getpid _getpid
#endif
#ifdef MOZ_X11
#include "mozilla/X11Util.h"
#endif
#ifdef ACCESSIBILITY
#include "nsIAccessibilityService.h"
#endif
#ifdef MOZ_NUWA_PROCESS
#include <setjmp.h>
#include "ipc/Nuwa.h"
#endif
#include "mozilla/dom/File.h"
#include "mozilla/dom/cellbroadcast/CellBroadcastIPCService.h"
#include "mozilla/dom/mobileconnection/MobileConnectionChild.h"
#include "mozilla/dom/mobilemessage/SmsChild.h"
#include "mozilla/dom/devicestorage/DeviceStorageRequestChild.h"
#include "mozilla/dom/PFileSystemRequestChild.h"
#include "mozilla/dom/FileSystemTaskBase.h"
#include "mozilla/dom/bluetooth/PBluetoothChild.h"
#include "mozilla/dom/PFMRadioChild.h"
#include "mozilla/ipc/InputStreamUtils.h"
#ifdef MOZ_WEBSPEECH
#include "mozilla/dom/PSpeechSynthesisChild.h"
#endif
#include "ProcessUtils.h"
#include "StructuredCloneUtils.h"
#include "URIUtils.h"
#include "nsContentUtils.h"
#include "nsIPrincipal.h"
#include "nsDeviceStorage.h"
#include "AudioChannelService.h"
#include "JavaScriptChild.h"
#include "mozilla/dom/DataStoreService.h"
#include "mozilla/dom/telephony/PTelephonyChild.h"
#include "mozilla/dom/time/DateCacheCleaner.h"
#include "mozilla/dom/voicemail/VoicemailIPCService.h"
#include "mozilla/net/NeckoMessageUtils.h"
#include "mozilla/RemoteSpellCheckEngineChild.h"
using namespace base;
using namespace mozilla;
using namespace mozilla::docshell;
using namespace mozilla::dom::bluetooth;
using namespace mozilla::dom::cellbroadcast;
using namespace mozilla::dom::devicestorage;
using namespace mozilla::dom::ipc;
using namespace mozilla::dom::mobileconnection;
using namespace mozilla::dom::mobilemessage;
using namespace mozilla::dom::telephony;
using namespace mozilla::dom::voicemail;
using namespace mozilla::embedding;
using namespace mozilla::hal_sandbox;
using namespace mozilla::ipc;
using namespace mozilla::layers;
using namespace mozilla::net;
using namespace mozilla::jsipc;
#if defined(MOZ_WIDGET_GONK)
using namespace mozilla::system;
#endif
using namespace mozilla::widget;
#ifdef MOZ_NUWA_PROCESS
static bool sNuwaForking = false;
// The size of the reserved stack (in unsigned ints). It's used to reserve space
// to push sigsetjmp() in NuwaCheckpointCurrentThread() to higher in the stack
// so that after it returns and do other work we don't garble the stack we want
// to preserve in NuwaCheckpointCurrentThread().
#define RESERVED_INT_STACK 128
// A sentinel value for checking whether RESERVED_INT_STACK is large enough.
#define STACK_SENTINEL_VALUE 0xdeadbeef
#endif
namespace mozilla {
namespace dom {
class MemoryReportRequestChild : public PMemoryReportRequestChild,
public nsIRunnable
{
public:
NS_DECL_ISUPPORTS
MemoryReportRequestChild(uint32_t aGeneration, bool aAnonymize,
const MaybeFileDesc& aDMDFile);
NS_IMETHOD Run();
private:
virtual ~MemoryReportRequestChild();
uint32_t mGeneration;
bool mAnonymize;
FileDescriptor mDMDFile;
};
NS_IMPL_ISUPPORTS(MemoryReportRequestChild, nsIRunnable)
MemoryReportRequestChild::MemoryReportRequestChild(
uint32_t aGeneration, bool aAnonymize, const MaybeFileDesc& aDMDFile)
: mGeneration(aGeneration), mAnonymize(aAnonymize)
{
MOZ_COUNT_CTOR(MemoryReportRequestChild);
if (aDMDFile.type() == MaybeFileDesc::TFileDescriptor) {
mDMDFile = aDMDFile.get_FileDescriptor();
}
}
MemoryReportRequestChild::~MemoryReportRequestChild()
{
MOZ_COUNT_DTOR(MemoryReportRequestChild);
}
// IPC sender for remote GC/CC logging.
class CycleCollectWithLogsChild MOZ_FINAL
: public PCycleCollectWithLogsChild
, public nsICycleCollectorLogSink
{
public:
NS_DECL_ISUPPORTS
CycleCollectWithLogsChild(const FileDescriptor& aGCLog,
const FileDescriptor& aCCLog)
{
mGCLog = FileDescriptorToFILE(aGCLog, "w");
mCCLog = FileDescriptorToFILE(aCCLog, "w");
}
NS_IMETHOD Open(FILE** aGCLog, FILE** aCCLog) MOZ_OVERRIDE
{
if (NS_WARN_IF(!mGCLog) || NS_WARN_IF(!mCCLog)) {
return NS_ERROR_FAILURE;
}
*aGCLog = mGCLog;
*aCCLog = mCCLog;
return NS_OK;
}
NS_IMETHOD CloseGCLog() MOZ_OVERRIDE
{
MOZ_ASSERT(mGCLog);
fclose(mGCLog);
mGCLog = nullptr;
SendCloseGCLog();
return NS_OK;
}
NS_IMETHOD CloseCCLog() MOZ_OVERRIDE
{
MOZ_ASSERT(mCCLog);
fclose(mCCLog);
mCCLog = nullptr;
SendCloseCCLog();
return NS_OK;
}
NS_IMETHOD GetFilenameIdentifier(nsAString& aIdentifier) MOZ_OVERRIDE
{
return UnimplementedProperty();
}
NS_IMETHOD SetFilenameIdentifier(const nsAString& aIdentifier) MOZ_OVERRIDE
{
return UnimplementedProperty();
}
NS_IMETHOD GetProcessIdentifier(int32_t *aIdentifier) MOZ_OVERRIDE
{
return UnimplementedProperty();
}
NS_IMETHOD SetProcessIdentifier(int32_t aIdentifier) MOZ_OVERRIDE
{
return UnimplementedProperty();
}
NS_IMETHOD GetGcLog(nsIFile** aPath) MOZ_OVERRIDE
{
return UnimplementedProperty();
}
NS_IMETHOD GetCcLog(nsIFile** aPath) MOZ_OVERRIDE
{
return UnimplementedProperty();
}
private:
~CycleCollectWithLogsChild()
{
if (mGCLog) {
fclose(mGCLog);
mGCLog = nullptr;
}
if (mCCLog) {
fclose(mCCLog);
mCCLog = nullptr;
}
// The XPCOM refcount drives the IPC lifecycle; see also
// DeallocPCycleCollectWithLogsChild.
unused << Send__delete__(this);
}
nsresult UnimplementedProperty()
{
MOZ_ASSERT(false, "This object is a remote GC/CC logger;"
" this property isn't meaningful.");
return NS_ERROR_UNEXPECTED;
}
FILE* mGCLog;
FILE* mCCLog;
};
NS_IMPL_ISUPPORTS(CycleCollectWithLogsChild, nsICycleCollectorLogSink);
class AlertObserver
{
public:
AlertObserver(nsIObserver *aObserver, const nsString& aData)
: mObserver(aObserver)
, mData(aData)
{
}
~AlertObserver() {}
bool ShouldRemoveFrom(nsIObserver* aObserver,
const nsString& aData) const
{
return (mObserver == aObserver &&
mData == aData);
}
bool Observes(const nsString& aData) const
{
return mData.Equals(aData);
}
bool Notify(const nsCString& aType) const
{
mObserver->Observe(nullptr, aType.get(), mData.get());
return true;
}
private:
nsCOMPtr<nsIObserver> mObserver;
nsString mData;
};
class ConsoleListener MOZ_FINAL : public nsIConsoleListener
{
public:
explicit ConsoleListener(ContentChild* aChild)
: mChild(aChild) {}
NS_DECL_ISUPPORTS
NS_DECL_NSICONSOLELISTENER
private:
~ConsoleListener() {}
ContentChild* mChild;
friend class ContentChild;
};
NS_IMPL_ISUPPORTS(ConsoleListener, nsIConsoleListener)
NS_IMETHODIMP
ConsoleListener::Observe(nsIConsoleMessage* aMessage)
{
if (!mChild)
return NS_OK;
nsCOMPtr<nsIScriptError> scriptError = do_QueryInterface(aMessage);
if (scriptError) {
nsString msg, sourceName, sourceLine;
nsXPIDLCString category;
uint32_t lineNum, colNum, flags;
nsresult rv = scriptError->GetErrorMessage(msg);
NS_ENSURE_SUCCESS(rv, rv);
rv = scriptError->GetSourceName(sourceName);
NS_ENSURE_SUCCESS(rv, rv);
rv = scriptError->GetSourceLine(sourceLine);
NS_ENSURE_SUCCESS(rv, rv);
// Before we send the error to the parent process (which
// involves copying the memory), truncate any long lines. CSS
// errors in particular share the memory for long lines with
// repeated errors, but the IPC communication we're about to do
// will break that sharing, so we better truncate now.
if (sourceLine.Length() > 1000) {
sourceLine.Truncate(1000);
}
rv = scriptError->GetCategory(getter_Copies(category));
NS_ENSURE_SUCCESS(rv, rv);
rv = scriptError->GetLineNumber(&lineNum);
NS_ENSURE_SUCCESS(rv, rv);
rv = scriptError->GetColumnNumber(&colNum);
NS_ENSURE_SUCCESS(rv, rv);
rv = scriptError->GetFlags(&flags);
NS_ENSURE_SUCCESS(rv, rv);
mChild->SendScriptError(msg, sourceName, sourceLine,
lineNum, colNum, flags, category);
return NS_OK;
}
nsXPIDLString msg;
nsresult rv = aMessage->GetMessageMoz(getter_Copies(msg));
NS_ENSURE_SUCCESS(rv, rv);
mChild->SendConsoleMessage(msg);
return NS_OK;
}
class SystemMessageHandledObserver MOZ_FINAL : public nsIObserver
{
~SystemMessageHandledObserver() {}
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIOBSERVER
void Init();
};
void SystemMessageHandledObserver::Init()
{
nsCOMPtr<nsIObserverService> os =
mozilla::services::GetObserverService();
if (os) {
os->AddObserver(this, "handle-system-messages-done",
/* ownsWeak */ false);
}
}
NS_IMETHODIMP
SystemMessageHandledObserver::Observe(nsISupports* aSubject,
const char* aTopic,
const char16_t* aData)
{
if (ContentChild::GetSingleton()) {
ContentChild::GetSingleton()->SendSystemMessageHandled();
}
return NS_OK;
}
NS_IMPL_ISUPPORTS(SystemMessageHandledObserver, nsIObserver)
class BackgroundChildPrimer MOZ_FINAL :
public nsIIPCBackgroundChildCreateCallback
{
public:
BackgroundChildPrimer()
{ }
NS_DECL_ISUPPORTS
private:
~BackgroundChildPrimer()
{ }
virtual void
ActorCreated(PBackgroundChild* aActor) MOZ_OVERRIDE
{
MOZ_ASSERT(aActor, "Failed to create a PBackgroundChild actor!");
}
virtual void
ActorFailed() MOZ_OVERRIDE
{
MOZ_CRASH("Failed to create a PBackgroundChild actor!");
}
};
NS_IMPL_ISUPPORTS(BackgroundChildPrimer, nsIIPCBackgroundChildCreateCallback)
ContentChild* ContentChild::sSingleton;
// Performs initialization that is not fork-safe, i.e. that must be done after
// forking from the Nuwa process.
static void
InitOnContentProcessCreated()
{
#ifdef MOZ_NUWA_PROCESS
// Wait until we are forked from Nuwa
if (IsNuwaProcess()) {
return;
}
#endif
// This will register cross-process observer.
mozilla::dom::time::InitializeDateCacheCleaner();
}
#if defined(MOZ_TASK_TRACER) && defined(MOZ_NUWA_PROCESS)
static void
ReinitTaskTracer(void* /*aUnused*/)
{
mozilla::tasktracer::InitTaskTracer(
mozilla::tasktracer::FORKED_AFTER_NUWA);
}
#endif
ContentChild::ContentChild()
: mID(uint64_t(-1))
#ifdef ANDROID
,mScreenSize(0, 0)
#endif
, mCanOverrideProcessName(true)
, mIsAlive(true)
{
// This process is a content process, so it's clearly running in
// multiprocess mode!
nsDebugImpl::SetMultiprocessMode("Child");
}
ContentChild::~ContentChild()
{
}
NS_INTERFACE_MAP_BEGIN(ContentChild)
NS_INTERFACE_MAP_ENTRY(nsIContentChild)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
#if defined(XP_MACOSX) && defined(MOZ_CONTENT_SANDBOX)
static bool
GetAppPaths(nsCString &aAppPath, nsCString &aAppBinaryPath)
{
nsAutoCString appPath;
nsAutoCString appBinaryPath(
(CommandLine::ForCurrentProcess()->argv()[0]).c_str());
nsAutoCString::const_iterator start, end;
appBinaryPath.BeginReading(start);
appBinaryPath.EndReading(end);
if (RFindInReadable(NS_LITERAL_CSTRING(".app/Contents/MacOS/"), start, end)) {
end = start;
++end; ++end; ++end; ++end;
appBinaryPath.BeginReading(start);
appPath.Assign(Substring(start, end));
} else {
return false;
}
nsCOMPtr<nsIFile> app, appBinary;
nsresult rv = NS_NewLocalFile(NS_ConvertUTF8toUTF16(appPath),
true, getter_AddRefs(app));
if (NS_FAILED(rv)) {
return false;
}
rv = NS_NewLocalFile(NS_ConvertUTF8toUTF16(appBinaryPath),
true, getter_AddRefs(appBinary));
if (NS_FAILED(rv)) {
return false;
}
bool isLink;
app->IsSymlink(&isLink);
if (isLink) {
app->GetNativeTarget(aAppPath);
} else {
app->GetNativePath(aAppPath);
}
appBinary->IsSymlink(&isLink);
if (isLink) {
appBinary->GetNativeTarget(aAppBinaryPath);
} else {
appBinary->GetNativePath(aAppBinaryPath);
}
return true;
}
void
ContentChild::OnChannelConnected(int32_t aPid)
{
nsAutoCString appPath, appBinaryPath;
if (!GetAppPaths(appPath, appBinaryPath)) {
MOZ_CRASH("Error resolving child process path");
}
MacSandboxInfo info;
info.type = MacSandboxType_Content;
info.appPath.Assign(appPath);
info.appBinaryPath.Assign(appBinaryPath);
nsAutoCString err;
if (!mozilla::StartMacSandbox(info, err)) {
NS_WARNING(err.get());
MOZ_CRASH("sandbox_init() failed");
}
}
#endif
bool
ContentChild::Init(MessageLoop* aIOLoop,
base::ProcessHandle aParentHandle,
IPC::Channel* aChannel)
{
#ifdef MOZ_WIDGET_GTK
// sigh
gtk_init(nullptr, nullptr);
#endif
#ifdef MOZ_WIDGET_QT
// sigh, seriously
nsQAppInstance::AddRef();
#endif
#ifdef MOZ_X11
// Do this after initializing GDK, or GDK will install its own handler.
XRE_InstallX11ErrorHandler();
#endif
#ifdef MOZ_NUWA_PROCESS
SetTransport(aChannel);
#endif
NS_ASSERTION(!sSingleton, "only one ContentChild per child");
// Once we start sending IPC messages, we need the thread manager to be
// initialized so we can deal with the responses. Do that here before we
// try to construct the crash reporter.
nsresult rv = nsThreadManager::get()->Init();
if (NS_WARN_IF(NS_FAILED(rv))) {
return false;
}
if (!Open(aChannel, aParentHandle, aIOLoop)) {
return false;
}
sSingleton = this;
// Make sure there's an nsAutoScriptBlocker on the stack when dispatching
// urgent messages.
GetIPCChannel()->BlockScripts();
#ifdef MOZ_X11
// Send the parent our X socket to act as a proxy reference for our X
// resources.
int xSocketFd = ConnectionNumber(DefaultXDisplay());
SendBackUpXResources(FileDescriptor(xSocketFd));
#endif
#ifdef MOZ_CRASHREPORTER
SendPCrashReporterConstructor(CrashReporter::CurrentThreadId(),
XRE_GetProcessType());
#endif
GetCPOWManager();
SendGetProcessAttributes(&mID, &mIsForApp, &mIsForBrowser);
InitProcessAttributes();
#if defined(MOZ_TASK_TRACER) && defined (MOZ_NUWA_PROCESS)
if (IsNuwaProcess()) {
NuwaAddConstructor(ReinitTaskTracer, nullptr);
}
#endif
return true;
}
void
ContentChild::InitProcessAttributes()
{
#ifdef MOZ_WIDGET_GONK
#ifdef MOZ_NUWA_PROCESS
if (IsNuwaProcess()) {
SetProcessName(NS_LITERAL_STRING("(Nuwa)"), false);
return;
}
#endif
if (mIsForApp && !mIsForBrowser) {
SetProcessName(NS_LITERAL_STRING("(Preallocated app)"), false);
} else {
SetProcessName(NS_LITERAL_STRING("Browser"), false);
}
#else
SetProcessName(NS_LITERAL_STRING("Web Content"), true);
#endif
}
void
ContentChild::SetProcessName(const nsAString& aName, bool aDontOverride)
{
if (!mCanOverrideProcessName) {
return;
}
char* name;
if ((name = PR_GetEnv("MOZ_DEBUG_APP_PROCESS")) &&
aName.EqualsASCII(name)) {
#ifdef OS_POSIX
printf_stderr("\n\nCHILDCHILDCHILDCHILD\n [%s] debug me @%d\n\n", name, getpid());
sleep(30);
#elif defined(OS_WIN)
// Windows has a decent JIT debugging story, so NS_DebugBreak does the
// right thing.
NS_DebugBreak(NS_DEBUG_BREAK,
"Invoking NS_DebugBreak() to debug child process",
nullptr, __FILE__, __LINE__);
#endif
}
mProcessName = aName;
mozilla::ipc::SetThisProcessName(NS_LossyConvertUTF16toASCII(aName).get());
if (aDontOverride) {
mCanOverrideProcessName = false;
}
}
void
ContentChild::GetProcessName(nsAString& aName)
{
aName.Assign(mProcessName);
}
bool
ContentChild::IsAlive()
{
return mIsAlive;
}
void
ContentChild::GetProcessName(nsACString& aName)
{
aName.Assign(NS_ConvertUTF16toUTF8(mProcessName));
}
/* static */ void
ContentChild::AppendProcessId(nsACString& aName)
{
if (!aName.IsEmpty()) {
aName.Append(' ');
}
unsigned pid = getpid();
aName.Append(nsPrintfCString("(pid %u)", pid));
}
void
ContentChild::InitXPCOM()
{
// Do this as early as possible to get the parent process to initialize the
// background thread since we'll likely need database information very soon.
BackgroundChild::Startup();
nsCOMPtr<nsIIPCBackgroundChildCreateCallback> callback =
new BackgroundChildPrimer();
if (!BackgroundChild::GetOrCreateForCurrentThread(callback)) {
MOZ_CRASH("Failed to create PBackgroundChild!");
}
BlobChild::Startup(BlobChild::FriendKey());
nsCOMPtr<nsIConsoleService> svc(do_GetService(NS_CONSOLESERVICE_CONTRACTID));
if (!svc) {
NS_WARNING("Couldn't acquire console service");
return;
}
mConsoleListener = new ConsoleListener(this);
if (NS_FAILED(svc->RegisterListener(mConsoleListener)))
NS_WARNING("Couldn't register console listener for child process");
bool isOffline;
ClipboardCapabilities clipboardCaps;
SendGetXPCOMProcessAttributes(&isOffline, &mAvailableDictionaries, &clipboardCaps);
RecvSetOffline(isOffline);
nsCOMPtr<nsIClipboard> clipboard(do_GetService("@mozilla.org/widget/clipboard;1"));
if (nsCOMPtr<nsIClipboardProxy> clipboardProxy = do_QueryInterface(clipboard)) {
clipboardProxy->SetCapabilities(clipboardCaps);
}
DebugOnly<FileUpdateDispatcher*> observer = FileUpdateDispatcher::GetSingleton();
NS_ASSERTION(observer, "FileUpdateDispatcher is null");
// This object is held alive by the observer service.
nsRefPtr<SystemMessageHandledObserver> sysMsgObserver =
new SystemMessageHandledObserver();
sysMsgObserver->Init();
InitOnContentProcessCreated();
}
a11y::PDocAccessibleChild*
ContentChild::AllocPDocAccessibleChild(PDocAccessibleChild*, const uint64_t&)
{
MOZ_ASSERT(false, "should never call this!");
return nullptr;
}
bool
ContentChild::DeallocPDocAccessibleChild(a11y::PDocAccessibleChild* aChild)
{
#ifdef ACCESSIBILITY
delete static_cast<mozilla::a11y::DocAccessibleChild*>(aChild);
#endif
return true;
}
PMemoryReportRequestChild*
ContentChild::AllocPMemoryReportRequestChild(const uint32_t& aGeneration,
const bool &aAnonymize,
const bool &aMinimizeMemoryUsage,
const MaybeFileDesc& aDMDFile)
{
MemoryReportRequestChild *actor =
new MemoryReportRequestChild(aGeneration, aAnonymize, aDMDFile);
actor->AddRef();
return actor;
}
// This is just a wrapper for InfallibleTArray<MemoryReport> that implements
// nsISupports, so it can be passed to nsIMemoryReporter::CollectReports.
class MemoryReportsWrapper MOZ_FINAL : public nsISupports {
~MemoryReportsWrapper() {}
public:
NS_DECL_ISUPPORTS
explicit MemoryReportsWrapper(InfallibleTArray<MemoryReport>* r) : mReports(r) { }
InfallibleTArray<MemoryReport> *mReports;
};
NS_IMPL_ISUPPORTS0(MemoryReportsWrapper)
class MemoryReportCallback MOZ_FINAL : public nsIMemoryReporterCallback
{
public:
NS_DECL_ISUPPORTS
explicit MemoryReportCallback(const nsACString& aProcess)
: mProcess(aProcess)
{
}
NS_IMETHOD Callback(const nsACString &aProcess, const nsACString &aPath,
int32_t aKind, int32_t aUnits, int64_t aAmount,
const nsACString &aDescription,
nsISupports *aiWrappedReports)
{
MemoryReportsWrapper *wrappedReports =
static_cast<MemoryReportsWrapper *>(aiWrappedReports);
MemoryReport memreport(mProcess, nsCString(aPath), aKind, aUnits,
aAmount, nsCString(aDescription));
wrappedReports->mReports->AppendElement(memreport);
return NS_OK;
}
private:
~MemoryReportCallback() {}
const nsCString mProcess;
};
NS_IMPL_ISUPPORTS(
MemoryReportCallback
, nsIMemoryReporterCallback
)
bool
ContentChild::RecvPMemoryReportRequestConstructor(
PMemoryReportRequestChild* aChild,
const uint32_t& aGeneration,
const bool& aAnonymize,
const bool& aMinimizeMemoryUsage,
const MaybeFileDesc& aDMDFile)
{
MemoryReportRequestChild *actor =
static_cast<MemoryReportRequestChild*>(aChild);
nsresult rv;
if (aMinimizeMemoryUsage) {
nsCOMPtr<nsIMemoryReporterManager> mgr = do_GetService("@mozilla.org/memory-reporter-manager;1");
rv = mgr->MinimizeMemoryUsage(actor);
// mgr will eventually call actor->Run()
} else {
rv = actor->Run();
}
return !NS_WARN_IF(NS_FAILED(rv));
}
NS_IMETHODIMP MemoryReportRequestChild::Run()
{
ContentChild *child = static_cast<ContentChild*>(Manager());
nsCOMPtr<nsIMemoryReporterManager> mgr = do_GetService("@mozilla.org/memory-reporter-manager;1");
InfallibleTArray<MemoryReport> reports;
nsCString process;
child->GetProcessName(process);
child->AppendProcessId(process);
// Run the reporters. The callback will turn each measurement into a
// MemoryReport.
nsRefPtr<MemoryReportsWrapper> wrappedReports =
new MemoryReportsWrapper(&reports);
nsRefPtr<MemoryReportCallback> cb = new MemoryReportCallback(process);
mgr->GetReportsForThisProcessExtended(cb, wrappedReports, mAnonymize,
FileDescriptorToFILE(mDMDFile, "wb"));
bool sent = Send__delete__(this, mGeneration, reports);
return sent ? NS_OK : NS_ERROR_FAILURE;
}
bool
ContentChild::RecvAudioChannelNotify()
{
nsRefPtr<AudioChannelService> service =
AudioChannelService::GetAudioChannelService();
if (service) {
service->Notify();
}
return true;
}
bool
ContentChild::RecvDataStoreNotify(const uint32_t& aAppId,
const nsString& aName,
const nsString& aManifestURL)
{
nsRefPtr<DataStoreService> service = DataStoreService::GetOrCreate();
if (NS_WARN_IF(!service)) {
return false;
}
nsresult rv = service->EnableDataStore(aAppId, aName, aManifestURL);
if (NS_WARN_IF(NS_FAILED(rv))) {
return false;
}
return true;
}
bool
ContentChild::DeallocPMemoryReportRequestChild(PMemoryReportRequestChild* actor)
{
static_cast<MemoryReportRequestChild*>(actor)->Release();
return true;
}
PCycleCollectWithLogsChild*
ContentChild::AllocPCycleCollectWithLogsChild(const bool& aDumpAllTraces,
const FileDescriptor& aGCLog,
const FileDescriptor& aCCLog)
{
CycleCollectWithLogsChild* actor = new CycleCollectWithLogsChild(aGCLog, aCCLog);
// Return actor with refcount 0, which is safe because it has a non-XPCOM type.
return actor;
}
bool
ContentChild::RecvPCycleCollectWithLogsConstructor(PCycleCollectWithLogsChild* aActor,
const bool& aDumpAllTraces,
const FileDescriptor& aGCLog,
const FileDescriptor& aCCLog)
{
// Take a reference here, where the XPCOM type is regained.
nsRefPtr<CycleCollectWithLogsChild> sink = static_cast<CycleCollectWithLogsChild*>(aActor);
nsCOMPtr<nsIMemoryInfoDumper> dumper = do_GetService("@mozilla.org/memory-info-dumper;1");
dumper->DumpGCAndCCLogsToSink(aDumpAllTraces, sink);
// The actor's destructor is called when the last reference goes away...
return true;
}
bool
ContentChild::DeallocPCycleCollectWithLogsChild(PCycleCollectWithLogsChild* /* aActor */)
{
// ...so when we get here, there's nothing for us to do.
//
// Also, we're already in ~CycleCollectWithLogsChild (q.v.) at
// this point, so we shouldn't touch the actor in any case.
return true;
}
mozilla::plugins::PPluginModuleParent*
ContentChild::AllocPPluginModuleParent(mozilla::ipc::Transport* aTransport,
base::ProcessId aOtherProcess)
{
return plugins::PluginModuleContentParent::Create(aTransport, aOtherProcess);
}
PContentBridgeChild*
ContentChild::AllocPContentBridgeChild(mozilla::ipc::Transport* aTransport,
base::ProcessId aOtherProcess)
{
return ContentBridgeChild::Create(aTransport, aOtherProcess);
}
PContentBridgeParent*
ContentChild::AllocPContentBridgeParent(mozilla::ipc::Transport* aTransport,
base::ProcessId aOtherProcess)
{
MOZ_ASSERT(!mLastBridge);
mLastBridge = static_cast<ContentBridgeParent*>(
ContentBridgeParent::Create(aTransport, aOtherProcess));
return mLastBridge;
}
PCompositorChild*
ContentChild::AllocPCompositorChild(mozilla::ipc::Transport* aTransport,
base::ProcessId aOtherProcess)
{
return CompositorChild::Create(aTransport, aOtherProcess);
}
PSharedBufferManagerChild*
ContentChild::AllocPSharedBufferManagerChild(mozilla::ipc::Transport* aTransport,
base::ProcessId aOtherProcess)
{
return SharedBufferManagerChild::StartUpInChildProcess(aTransport, aOtherProcess);
}
PImageBridgeChild*
ContentChild::AllocPImageBridgeChild(mozilla::ipc::Transport* aTransport,
base::ProcessId aOtherProcess)
{
return ImageBridgeChild::StartUpInChildProcess(aTransport, aOtherProcess);
}
PBackgroundChild*
ContentChild::AllocPBackgroundChild(Transport* aTransport,
ProcessId aOtherProcess)
{
return BackgroundChild::Alloc(aTransport, aOtherProcess);
}
#if defined(XP_WIN) && defined(MOZ_CONTENT_SANDBOX)
static void
SetUpSandboxEnvironment()
{
// Set up a low integrity temp directory. This only makes sense if the
// delayed integrity level for the content process is INTEGRITY_LEVEL_LOW.
nsresult rv;
nsCOMPtr<nsIProperties> directoryService =
do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID, &rv);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
nsCOMPtr<nsIFile> lowIntegrityTemp;
rv = directoryService->Get(NS_WIN_LOW_INTEGRITY_TEMP, NS_GET_IID(nsIFile),
getter_AddRefs(lowIntegrityTemp));
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
// Undefine returns a failure if the property is not already set.
unused << directoryService->Undefine(NS_OS_TEMP_DIR);
rv = directoryService->Set(NS_OS_TEMP_DIR, lowIntegrityTemp);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
// Set TEMP and TMP environment variables.
nsAutoString lowIntegrityTempPath;
rv = lowIntegrityTemp->GetPath(lowIntegrityTempPath);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
bool setOK = SetEnvironmentVariableW(L"TEMP", lowIntegrityTempPath.get());
NS_WARN_IF_FALSE(setOK, "Failed to set TEMP to low integrity temp path");
setOK = SetEnvironmentVariableW(L"TMP", lowIntegrityTempPath.get());
NS_WARN_IF_FALSE(setOK, "Failed to set TMP to low integrity temp path");
}
void
ContentChild::CleanUpSandboxEnvironment()
{
nsresult rv;
nsCOMPtr<nsIProperties> directoryService =
do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID, &rv);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
nsCOMPtr<nsIFile> lowIntegrityTemp;
rv = directoryService->Get(NS_WIN_LOW_INTEGRITY_TEMP, NS_GET_IID(nsIFile),
getter_AddRefs(lowIntegrityTemp));
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
// Don't check the return value as the directory will only have been created
// if it has been used.
unused << lowIntegrityTemp->Remove(/* aRecursive */ true);
}
#endif
bool
ContentChild::RecvSetProcessSandbox()
{
// We may want to move the sandbox initialization somewhere else
// at some point; see bug 880808.
#if defined(MOZ_CONTENT_SANDBOX)
#if defined(XP_LINUX)
#if defined(MOZ_WIDGET_GONK) && ANDROID_VERSION >= 19
// For B2G >= KitKat, sandboxing is mandatory; this has already
// been enforced by ContentParent::StartUp().
MOZ_ASSERT(CanSandboxContentProcess());
#else
// Otherwise, sandboxing is best-effort.
if (!CanSandboxContentProcess()) {
return true;
}
#endif
SetContentProcessSandbox();
#elif defined(XP_WIN)
nsAdoptingString contentSandboxPref =
Preferences::GetString("browser.tabs.remote.sandbox");
if (contentSandboxPref.EqualsLiteral("on")
|| contentSandboxPref.EqualsLiteral("warn")) {
mozilla::SandboxTarget::Instance()->StartSandbox();
SetUpSandboxEnvironment();
}
#endif
#endif
return true;
}
bool
ContentChild::RecvSpeakerManagerNotify()
{
#ifdef MOZ_WIDGET_GONK
// Only notify the process which has the SpeakerManager instance.
nsRefPtr<SpeakerManagerService> service =
SpeakerManagerService::GetSpeakerManagerService();
if (service) {
service->Notify();
}
return true;
#endif
return false;
}
static CancelableTask* sFirstIdleTask;
static void FirstIdle(void)
{
MOZ_ASSERT(sFirstIdleTask);
sFirstIdleTask = nullptr;
ContentChild::GetSingleton()->SendFirstIdle();
}
mozilla::jsipc::PJavaScriptChild *
ContentChild::AllocPJavaScriptChild()
{
MOZ_ASSERT(!ManagedPJavaScriptChild().Length());
return nsIContentChild::AllocPJavaScriptChild();
}
bool
ContentChild::DeallocPJavaScriptChild(PJavaScriptChild *aChild)
{
return nsIContentChild::DeallocPJavaScriptChild(aChild);
}
PBrowserChild*
ContentChild::AllocPBrowserChild(const TabId& aTabId,
const IPCTabContext& aContext,
const uint32_t& aChromeFlags,
const ContentParentId& aCpID,
const bool& aIsForApp,
const bool& aIsForBrowser)
{
return nsIContentChild::AllocPBrowserChild(aTabId,
aContext,
aChromeFlags,
aCpID,
aIsForApp,
aIsForBrowser);
}
bool
ContentChild::SendPBrowserConstructor(PBrowserChild* aActor,
const TabId& aTabId,
const IPCTabContext& aContext,
const uint32_t& aChromeFlags,
const ContentParentId& aCpID,
const bool& aIsForApp,
const bool& aIsForBrowser)
{
return PContentChild::SendPBrowserConstructor(aActor,
aTabId,
aContext,
aChromeFlags,
aCpID,
aIsForApp,
aIsForBrowser);
}
bool
ContentChild::RecvPBrowserConstructor(PBrowserChild* aActor,
const TabId& aTabId,
const IPCTabContext& aContext,
const uint32_t& aChromeFlags,
const ContentParentId& aCpID,
const bool& aIsForApp,
const bool& aIsForBrowser)
{
// This runs after AllocPBrowserChild() returns and the IPC machinery for this
// PBrowserChild has been set up.
nsCOMPtr<nsIObserverService> os = services::GetObserverService();
if (os) {
nsITabChild* tc =
static_cast<nsITabChild*>(static_cast<TabChild*>(aActor));
os->NotifyObservers(tc, "tab-child-created", nullptr);
}
static bool hasRunOnce = false;
if (!hasRunOnce) {
hasRunOnce = true;
MOZ_ASSERT(!sFirstIdleTask);
sFirstIdleTask = NewRunnableFunction(FirstIdle);
MessageLoop::current()->PostIdleTask(FROM_HERE, sFirstIdleTask);
// Redo InitProcessAttributes() when the app or browser is really
// launching so the attributes will be correct.
mID = aCpID;
mIsForApp = aIsForApp;
mIsForBrowser = aIsForBrowser;
InitProcessAttributes();
}
return true;
}
void
ContentChild::GetAvailableDictionaries(InfallibleTArray<nsString>& aDictionaries)
{
aDictionaries = mAvailableDictionaries;
}
PFileDescriptorSetChild*
ContentChild::AllocPFileDescriptorSetChild(const FileDescriptor& aFD)
{
return new FileDescriptorSetChild(aFD);
}
bool
ContentChild::DeallocPFileDescriptorSetChild(PFileDescriptorSetChild* aActor)
{
delete static_cast<FileDescriptorSetChild*>(aActor);
return true;
}
bool
ContentChild::DeallocPBrowserChild(PBrowserChild* aIframe)
{
return nsIContentChild::DeallocPBrowserChild(aIframe);
}
PBlobChild*
ContentChild::AllocPBlobChild(const BlobConstructorParams& aParams)
{
return nsIContentChild::AllocPBlobChild(aParams);
}
mozilla::PRemoteSpellcheckEngineChild *
ContentChild::AllocPRemoteSpellcheckEngineChild()
{
NS_NOTREACHED("Default Constructor for PRemoteSpellcheckEngineChild should never be called");
return nullptr;
}
bool
ContentChild::DeallocPRemoteSpellcheckEngineChild(PRemoteSpellcheckEngineChild *child)
{
delete child;
return true;
}
bool
ContentChild::DeallocPBlobChild(PBlobChild* aActor)
{
return nsIContentChild::DeallocPBlobChild(aActor);
}
PBlobChild*
ContentChild::SendPBlobConstructor(PBlobChild* aActor,
const BlobConstructorParams& aParams)
{
return PContentChild::SendPBlobConstructor(aActor, aParams);
}
PCrashReporterChild*
ContentChild::AllocPCrashReporterChild(const mozilla::dom::NativeThreadId& id,
const uint32_t& processType)
{
#ifdef MOZ_CRASHREPORTER
return new CrashReporterChild();
#else
return nullptr;
#endif
}
bool
ContentChild::DeallocPCrashReporterChild(PCrashReporterChild* crashreporter)
{
delete crashreporter;
return true;
}
PHalChild*
ContentChild::AllocPHalChild()
{
return CreateHalChild();
}
bool
ContentChild::DeallocPHalChild(PHalChild* aHal)
{
delete aHal;
return true;
}
asmjscache::PAsmJSCacheEntryChild*
ContentChild::AllocPAsmJSCacheEntryChild(
const asmjscache::OpenMode& aOpenMode,
const asmjscache::WriteParams& aWriteParams,
const IPC::Principal& aPrincipal)
{
NS_NOTREACHED("Should never get here!");
return nullptr;
}
bool
ContentChild::DeallocPAsmJSCacheEntryChild(PAsmJSCacheEntryChild* aActor)
{
asmjscache::DeallocEntryChild(aActor);
return true;
}
PTestShellChild*
ContentChild::AllocPTestShellChild()
{
return new TestShellChild();
}
bool
ContentChild::DeallocPTestShellChild(PTestShellChild* shell)
{
delete shell;
return true;
}
jsipc::JavaScriptShared*
ContentChild::GetCPOWManager()
{
if (ManagedPJavaScriptChild().Length()) {
return static_cast<JavaScriptChild*>(ManagedPJavaScriptChild()[0]);
}
JavaScriptChild* actor = static_cast<JavaScriptChild*>(SendPJavaScriptConstructor());
return actor;
}
bool
ContentChild::RecvPTestShellConstructor(PTestShellChild* actor)
{
return true;
}
PDeviceStorageRequestChild*
ContentChild::AllocPDeviceStorageRequestChild(const DeviceStorageParams& aParams)
{
return new DeviceStorageRequestChild();
}
bool
ContentChild::DeallocPDeviceStorageRequestChild(PDeviceStorageRequestChild* aDeviceStorage)
{
delete aDeviceStorage;
return true;
}
PFileSystemRequestChild*
ContentChild::AllocPFileSystemRequestChild(const FileSystemParams& aParams)
{
NS_NOTREACHED("Should never get here!");
return nullptr;
}
bool
ContentChild::DeallocPFileSystemRequestChild(PFileSystemRequestChild* aFileSystem)
{
mozilla::dom::FileSystemTaskBase* child =
static_cast<mozilla::dom::FileSystemTaskBase*>(aFileSystem);
// The reference is increased in FileSystemTaskBase::Start of
// FileSystemTaskBase.cpp. We should decrease it after IPC.
NS_RELEASE(child);
return true;
}
PMobileConnectionChild*
ContentChild::SendPMobileConnectionConstructor(PMobileConnectionChild* aActor,
const uint32_t& aClientId)
{
#ifdef MOZ_B2G_RIL
// Add an extra ref for IPDL. Will be released in
// ContentChild::DeallocPMobileConnectionChild().
static_cast<MobileConnectionChild*>(aActor)->AddRef();
return PContentChild::SendPMobileConnectionConstructor(aActor, aClientId);
#else
MOZ_CRASH("No support for mobileconnection on this platform!");;
#endif
}
PMobileConnectionChild*
ContentChild::AllocPMobileConnectionChild(const uint32_t& aClientId)
{
#ifdef MOZ_B2G_RIL
NS_NOTREACHED("No one should be allocating PMobileConnectionChild actors");
return nullptr;
#else
MOZ_CRASH("No support for mobileconnection on this platform!");;
#endif
}
bool
ContentChild::DeallocPMobileConnectionChild(PMobileConnectionChild* aActor)
{
#ifdef MOZ_B2G_RIL
// MobileConnectionChild is refcounted, must not be freed manually.
static_cast<MobileConnectionChild*>(aActor)->Release();
return true;
#else
MOZ_CRASH("No support for mobileconnection on this platform!");
#endif
}
PNeckoChild*
ContentChild::AllocPNeckoChild()
{
return new NeckoChild();
}
bool
ContentChild::DeallocPNeckoChild(PNeckoChild* necko)
{
delete necko;
return true;
}
PPrintingChild*
ContentChild::AllocPPrintingChild()
{
// The ContentParent should never attempt to allocate the
// nsPrintingPromptServiceProxy, which implements PPrintingChild. Instead,
// the nsPrintingPromptServiceProxy service is requested and instantiated
// via XPCOM, and the constructor of nsPrintingPromptServiceProxy sets up
// the IPC connection.
NS_NOTREACHED("Should never get here!");
return nullptr;
}
bool
ContentChild::DeallocPPrintingChild(PPrintingChild* printing)
{
return true;
}
PScreenManagerChild*
ContentChild::AllocPScreenManagerChild(uint32_t* aNumberOfScreens,
float* aSystemDefaultScale,
bool* aSuccess)
{
// The ContentParent should never attempt to allocate the
// nsScreenManagerProxy. Instead, the nsScreenManagerProxy
// service is requested and instantiated via XPCOM, and the
// constructor of nsScreenManagerProxy sets up the IPC connection.
NS_NOTREACHED("Should never get here!");
return nullptr;
}
bool
ContentChild::DeallocPScreenManagerChild(PScreenManagerChild* aService)
{
// nsScreenManagerProxy is AddRef'd in its constructor.
nsScreenManagerProxy *child = static_cast<nsScreenManagerProxy*>(aService);
child->Release();
return true;
}
PExternalHelperAppChild*
ContentChild::AllocPExternalHelperAppChild(const OptionalURIParams& uri,
const nsCString& aMimeContentType,
const nsCString& aContentDisposition,
const uint32_t& aContentDispositionHint,
const nsString& aContentDispositionFilename,
const bool& aForceSave,
const int64_t& aContentLength,
const OptionalURIParams& aReferrer,
PBrowserChild* aBrowser)
{
ExternalHelperAppChild *child = new ExternalHelperAppChild();
child->AddRef();
return child;
}
bool
ContentChild::DeallocPExternalHelperAppChild(PExternalHelperAppChild* aService)
{
ExternalHelperAppChild *child = static_cast<ExternalHelperAppChild*>(aService);
child->Release();
return true;
}
PCellBroadcastChild*
ContentChild::AllocPCellBroadcastChild()
{
MOZ_CRASH("No one should be allocating PCellBroadcastChild actors");
}
PCellBroadcastChild*
ContentChild::SendPCellBroadcastConstructor(PCellBroadcastChild* aActor)
{
aActor = PContentChild::SendPCellBroadcastConstructor(aActor);
if (aActor) {
static_cast<CellBroadcastIPCService*>(aActor)->AddRef();
}
return aActor;
}
bool
ContentChild::DeallocPCellBroadcastChild(PCellBroadcastChild* aActor)
{
static_cast<CellBroadcastIPCService*>(aActor)->Release();
return true;
}
PSmsChild*
ContentChild::AllocPSmsChild()
{
return new SmsChild();
}
bool
ContentChild::DeallocPSmsChild(PSmsChild* aSms)
{
delete aSms;
return true;
}
PTelephonyChild*
ContentChild::AllocPTelephonyChild()
{
MOZ_CRASH("No one should be allocating PTelephonyChild actors");
}
bool
ContentChild::DeallocPTelephonyChild(PTelephonyChild* aActor)
{
delete aActor;
return true;
}
PVoicemailChild*
ContentChild::AllocPVoicemailChild()
{
MOZ_CRASH("No one should be allocating PVoicemailChild actors");
}
PVoicemailChild*
ContentChild::SendPVoicemailConstructor(PVoicemailChild* aActor)
{
aActor = PContentChild::SendPVoicemailConstructor(aActor);
if (aActor) {
static_cast<VoicemailIPCService*>(aActor)->AddRef();
}
return aActor;
}
bool
ContentChild::DeallocPVoicemailChild(PVoicemailChild* aActor)
{
static_cast<VoicemailIPCService*>(aActor)->Release();
return true;
}
PStorageChild*
ContentChild::AllocPStorageChild()
{
NS_NOTREACHED("We should never be manually allocating PStorageChild actors");
return nullptr;
}
bool
ContentChild::DeallocPStorageChild(PStorageChild* aActor)
{
DOMStorageDBChild* child = static_cast<DOMStorageDBChild*>(aActor);
child->ReleaseIPDLReference();
return true;
}
PBluetoothChild*
ContentChild::AllocPBluetoothChild()
{
#ifdef MOZ_B2G_BT
MOZ_CRASH("No one should be allocating PBluetoothChild actors");
#else
MOZ_CRASH("No support for bluetooth on this platform!");
#endif
}
bool
ContentChild::DeallocPBluetoothChild(PBluetoothChild* aActor)
{
#ifdef MOZ_B2G_BT
delete aActor;
return true;
#else
MOZ_CRASH("No support for bluetooth on this platform!");
#endif
}
PFMRadioChild*
ContentChild::AllocPFMRadioChild()
{
#ifdef MOZ_B2G_FM
NS_RUNTIMEABORT("No one should be allocating PFMRadioChild actors");
return nullptr;
#else
NS_RUNTIMEABORT("No support for FMRadio on this platform!");
return nullptr;
#endif
}
bool
ContentChild::DeallocPFMRadioChild(PFMRadioChild* aActor)
{
#ifdef MOZ_B2G_FM
delete aActor;
return true;
#else
NS_RUNTIMEABORT("No support for FMRadio on this platform!");
return false;
#endif
}
PSpeechSynthesisChild*
ContentChild::AllocPSpeechSynthesisChild()
{
#ifdef MOZ_WEBSPEECH
MOZ_CRASH("No one should be allocating PSpeechSynthesisChild actors");
#else
return nullptr;
#endif
}
bool
ContentChild::DeallocPSpeechSynthesisChild(PSpeechSynthesisChild* aActor)
{
#ifdef MOZ_WEBSPEECH
delete aActor;
return true;
#else
return false;
#endif
}
bool
ContentChild::RecvRegisterChrome(const InfallibleTArray<ChromePackage>& packages,
const InfallibleTArray<ResourceMapping>& resources,
const InfallibleTArray<OverrideMapping>& overrides,
const nsCString& locale,
const bool& reset)
{
nsCOMPtr<nsIChromeRegistry> registrySvc = nsChromeRegistry::GetService();
nsChromeRegistryContent* chromeRegistry =
static_cast<nsChromeRegistryContent*>(registrySvc.get());
chromeRegistry->RegisterRemoteChrome(packages, resources, overrides,
locale, reset);
return true;
}
bool
ContentChild::RecvRegisterChromeItem(const ChromeRegistryItem& item)
{
nsCOMPtr<nsIChromeRegistry> registrySvc = nsChromeRegistry::GetService();
nsChromeRegistryContent* chromeRegistry =
static_cast<nsChromeRegistryContent*>(registrySvc.get());
switch (item.type()) {
case ChromeRegistryItem::TChromePackage:
chromeRegistry->RegisterPackage(item.get_ChromePackage());
break;
case ChromeRegistryItem::TOverrideMapping:
chromeRegistry->RegisterOverride(item.get_OverrideMapping());
break;
case ChromeRegistryItem::TResourceMapping:
chromeRegistry->RegisterResource(item.get_ResourceMapping());
break;
default:
MOZ_ASSERT(false, "bad chrome item");
return false;
}
return true;
}
bool
ContentChild::RecvSetOffline(const bool& offline)
{
nsCOMPtr<nsIIOService> io (do_GetIOService());
NS_ASSERTION(io, "IO Service can not be null");
io->SetOffline(offline);
return true;
}
void
ContentChild::ActorDestroy(ActorDestroyReason why)
{
if (AbnormalShutdown == why) {
NS_WARNING("shutting down early because of crash!");
QuickExit();
}
#ifndef DEBUG
// In release builds, there's no point in the content process
// going through the full XPCOM shutdown path, because it doesn't
// keep persistent state.
QuickExit();
#endif
if (sFirstIdleTask) {
sFirstIdleTask->Cancel();
}
mAlertObservers.Clear();
mIdleObservers.Clear();
nsCOMPtr<nsIConsoleService> svc(do_GetService(NS_CONSOLESERVICE_CONTRACTID));
if (svc) {
svc->UnregisterListener(mConsoleListener);
mConsoleListener->mChild = nullptr;
}
mIsAlive = false;
XRE_ShutdownChildProcess();
}
void
ContentChild::ProcessingError(Result what)
{
switch (what) {
case MsgDropped:
QuickExit();
case MsgNotKnown:
NS_RUNTIMEABORT("aborting because of MsgNotKnown");
case MsgNotAllowed:
NS_RUNTIMEABORT("aborting because of MsgNotAllowed");
case MsgPayloadError:
NS_RUNTIMEABORT("aborting because of MsgPayloadError");
case MsgProcessingError:
NS_RUNTIMEABORT("aborting because of MsgProcessingError");
case MsgRouteError:
NS_RUNTIMEABORT("aborting because of MsgRouteError");
case MsgValueError:
NS_RUNTIMEABORT("aborting because of MsgValueError");
default:
NS_RUNTIMEABORT("not reached");
}
}
void
ContentChild::QuickExit()
{
NS_WARNING("content process _exit()ing");
_exit(0);
}
nsresult
ContentChild::AddRemoteAlertObserver(const nsString& aData,
nsIObserver* aObserver)
{
NS_ASSERTION(aObserver, "Adding a null observer?");
mAlertObservers.AppendElement(new AlertObserver(aObserver, aData));
return NS_OK;
}
bool
ContentChild::RecvSystemMemoryAvailable(const uint64_t& aGetterId,
const uint32_t& aMemoryAvailable)
{
nsRefPtr<Promise> p = dont_AddRef(reinterpret_cast<Promise*>(aGetterId));
if (!aMemoryAvailable) {
p->MaybeReject(NS_ERROR_NOT_AVAILABLE);
return true;
}
p->MaybeResolve((int)aMemoryAvailable);
return true;
}
bool
ContentChild::RecvPreferenceUpdate(const PrefSetting& aPref)
{
Preferences::SetPreference(aPref);
return true;
}
bool
ContentChild::RecvNotifyAlertsObserver(const nsCString& aType, const nsString& aData)
{
for (uint32_t i = 0; i < mAlertObservers.Length();
/*we mutate the array during the loop; ++i iff no mutation*/) {
AlertObserver* observer = mAlertObservers[i];
if (observer->Observes(aData) && observer->Notify(aType)) {
// if aType == alertfinished, this alert is done. we can
// remove the observer.
if (aType.Equals(nsDependentCString("alertfinished"))) {
mAlertObservers.RemoveElementAt(i);
continue;
}
}
++i;
}
return true;
}
bool
ContentChild::RecvNotifyVisited(const URIParams& aURI)
{
nsCOMPtr<nsIURI> newURI = DeserializeURI(aURI);
if (!newURI) {
return false;
}
nsCOMPtr<IHistory> history = services::GetHistoryService();
if (history) {
history->NotifyVisited(newURI);
}
return true;
}
bool
ContentChild::RecvAsyncMessage(const nsString& aMsg,
const ClonedMessageData& aData,
const InfallibleTArray<CpowEntry>& aCpows,
const IPC::Principal& aPrincipal)
{
nsRefPtr<nsFrameMessageManager> cpm = nsFrameMessageManager::sChildProcessManager;
if (cpm) {
StructuredCloneData cloneData = ipc::UnpackClonedMessageDataForChild(aData);
CpowIdHolder cpows(this, aCpows);
cpm->ReceiveMessage(static_cast<nsIContentFrameMessageManager*>(cpm.get()),
aMsg, false, &cloneData, &cpows, aPrincipal, nullptr);
}
return true;
}
bool
ContentChild::RecvGeolocationUpdate(const GeoPosition& somewhere)
{
nsCOMPtr<nsIGeolocationUpdate> gs = do_GetService("@mozilla.org/geolocation/service;1");
if (!gs) {
return true;
}
nsCOMPtr<nsIDOMGeoPosition> position = somewhere;
gs->Update(position);
return true;
}
bool
ContentChild::RecvGeolocationError(const uint16_t& errorCode)
{
nsCOMPtr<nsIGeolocationUpdate> gs = do_GetService("@mozilla.org/geolocation/service;1");
if (!gs) {
return true;
}
gs->NotifyError(errorCode);
return true;
}
bool
ContentChild::RecvUpdateDictionaryList(const InfallibleTArray<nsString>& aDictionaries)
{
mAvailableDictionaries = aDictionaries;
mozInlineSpellChecker::UpdateCanEnableInlineSpellChecking();
return true;
}
bool
ContentChild::RecvAddPermission(const IPC::Permission& permission)
{
#if MOZ_PERMISSIONS
nsCOMPtr<nsIPermissionManager> permissionManagerIface =
services::GetPermissionManager();
nsPermissionManager* permissionManager =
static_cast<nsPermissionManager*>(permissionManagerIface.get());
NS_ABORT_IF_FALSE(permissionManager,
"We have no permissionManager in the Content process !");
nsCOMPtr<nsIURI> uri;
NS_NewURI(getter_AddRefs(uri), NS_LITERAL_CSTRING("http://") + nsCString(permission.host));
NS_ENSURE_TRUE(uri, true);
nsIScriptSecurityManager* secMan = nsContentUtils::GetSecurityManager();
MOZ_ASSERT(secMan);
nsCOMPtr<nsIPrincipal> principal;
nsresult rv = secMan->GetAppCodebasePrincipal(uri, permission.appId,
permission.isInBrowserElement,
getter_AddRefs(principal));
NS_ENSURE_SUCCESS(rv, true);
// child processes don't care about modification time.
int64_t modificationTime = 0;
permissionManager->AddInternal(principal,
nsCString(permission.type),
permission.capability,
0,
permission.expireType,
permission.expireTime,
modificationTime,
nsPermissionManager::eNotify,
nsPermissionManager::eNoDBOperation);
#endif
return true;
}
bool
ContentChild::RecvScreenSizeChanged(const gfxIntSize& size)
{
#ifdef ANDROID
mScreenSize = size;
#else
NS_RUNTIMEABORT("Message currently only expected on android");
#endif
return true;
}
bool
ContentChild::RecvFlushMemory(const nsString& reason)
{
#ifdef MOZ_NUWA_PROCESS
if (IsNuwaProcess()) {
// Don't flush memory in the nuwa process: the GC thread could be frozen.
return true;
}
#endif
nsCOMPtr<nsIObserverService> os =
mozilla::services::GetObserverService();
if (os)
os->NotifyObservers(nullptr, "memory-pressure", reason.get());
return true;
}
bool
ContentChild::RecvActivateA11y()
{
#ifdef ACCESSIBILITY
// Start accessibility in content process if it's running in chrome
// process.
nsCOMPtr<nsIAccessibilityService> accService =
services::GetAccessibilityService();
#endif
return true;
}
bool
ContentChild::RecvGarbageCollect()
{
// Rebroadcast the "child-gc-request" so that workers will GC.
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
obs->NotifyObservers(nullptr, "child-gc-request", nullptr);
}
nsJSContext::GarbageCollectNow(JS::gcreason::DOM_IPC);
return true;
}
bool
ContentChild::RecvCycleCollect()
{
// Rebroadcast the "child-cc-request" so that workers will CC.
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
obs->NotifyObservers(nullptr, "child-cc-request", nullptr);
}
nsJSContext::CycleCollectNow();
return true;
}
#ifdef MOZ_NUWA_PROCESS
static void
OnFinishNuwaPreparation ()
{
MakeNuwaProcess();
}
#endif
static void
PreloadSlowThings()
{
// This fetches and creates all the built-in stylesheets.
nsLayoutStylesheetCache::UserContentSheet();
TabChild::PreloadSlowThings();
}
bool
ContentChild::RecvAppInfo(const nsCString& version, const nsCString& buildID,
const nsCString& name, const nsCString& UAName,
const nsCString& ID, const nsCString& vendor)
{
mAppInfo.version.Assign(version);
mAppInfo.buildID.Assign(buildID);
mAppInfo.name.Assign(name);
mAppInfo.UAName.Assign(UAName);
mAppInfo.ID.Assign(ID);
mAppInfo.vendor.Assign(vendor);
if (!Preferences::GetBool("dom.ipc.processPrelaunch.enabled", false)) {
return true;
}
// If we're part of the mozbrowser machinery, go ahead and start
// preloading things. We can only do this for mozbrowser because
// PreloadSlowThings() may set the docshell of the first TabChild
// inactive, and we can only safely restore it to active from
// BrowserElementChild.js.
if ((mIsForApp || mIsForBrowser)
#ifdef MOZ_NUWA_PROCESS
&& !IsNuwaProcess()
#endif
) {
PreloadSlowThings();
}
#ifdef MOZ_NUWA_PROCESS
if (IsNuwaProcess()) {
ContentChild::GetSingleton()->RecvGarbageCollect();
MessageLoop::current()->PostTask(
FROM_HERE, NewRunnableFunction(OnFinishNuwaPreparation));
}
#endif
return true;
}
bool
ContentChild::RecvLastPrivateDocShellDestroyed()
{
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
obs->NotifyObservers(nullptr, "last-pb-context-exited", nullptr);
return true;
}
bool
ContentChild::RecvFilePathUpdate(const nsString& aStorageType,
const nsString& aStorageName,
const nsString& aPath,
const nsCString& aReason)
{
nsRefPtr<DeviceStorageFile> dsf = new DeviceStorageFile(aStorageType, aStorageName, aPath);
nsString reason;
CopyASCIItoUTF16(aReason, reason);
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
obs->NotifyObservers(dsf, "file-watcher-update", reason.get());
return true;
}
bool
ContentChild::RecvFileSystemUpdate(const nsString& aFsName,
const nsString& aVolumeName,
const int32_t& aState,
const int32_t& aMountGeneration,
const bool& aIsMediaPresent,
const bool& aIsSharing,
const bool& aIsFormatting,
const bool& aIsFake,
const bool& aIsUnmounting)
{
#ifdef MOZ_WIDGET_GONK
nsRefPtr<nsVolume> volume = new nsVolume(aFsName, aVolumeName, aState,
aMountGeneration, aIsMediaPresent,
aIsSharing, aIsFormatting, aIsFake,
aIsUnmounting);
nsRefPtr<nsVolumeService> vs = nsVolumeService::GetSingleton();
if (vs) {
vs->UpdateVolume(volume);
}
#else
// Remove warnings about unused arguments
unused << aFsName;
unused << aVolumeName;
unused << aState;
unused << aMountGeneration;
unused << aIsMediaPresent;
unused << aIsSharing;
unused << aIsFormatting;
unused << aIsFake;
unused << aIsUnmounting;
#endif
return true;
}
bool
ContentChild::RecvNotifyProcessPriorityChanged(
const hal::ProcessPriority& aPriority)
{
nsCOMPtr<nsIObserverService> os = services::GetObserverService();
NS_ENSURE_TRUE(os, true);
nsRefPtr<nsHashPropertyBag> props = new nsHashPropertyBag();
props->SetPropertyAsInt32(NS_LITERAL_STRING("priority"),
static_cast<int32_t>(aPriority));
os->NotifyObservers(static_cast<nsIPropertyBag2*>(props),
"ipc:process-priority-changed", nullptr);
return true;
}
bool
ContentChild::RecvMinimizeMemoryUsage()
{
#ifdef MOZ_NUWA_PROCESS
if (IsNuwaProcess()) {
// Don't minimize memory in the nuwa process: it will perform GC, but the
// GC thread could be frozen.
return true;
}
#endif
nsCOMPtr<nsIMemoryReporterManager> mgr =
do_GetService("@mozilla.org/memory-reporter-manager;1");
NS_ENSURE_TRUE(mgr, true);
mgr->MinimizeMemoryUsage(/* callback = */ nullptr);
return true;
}
bool
ContentChild::RecvNotifyPhoneStateChange(const nsString& aState)
{
nsCOMPtr<nsIObserverService> os = services::GetObserverService();
if (os) {
os->NotifyObservers(nullptr, "phone-state-changed", aState.get());
}
return true;
}
void
ContentChild::AddIdleObserver(nsIObserver* aObserver, uint32_t aIdleTimeInS)
{
MOZ_ASSERT(aObserver, "null idle observer");
// Make sure aObserver isn't released while we wait for the parent
aObserver->AddRef();
SendAddIdleObserver(reinterpret_cast<uint64_t>(aObserver), aIdleTimeInS);
mIdleObservers.PutEntry(aObserver);
}
void
ContentChild::RemoveIdleObserver(nsIObserver* aObserver, uint32_t aIdleTimeInS)
{
MOZ_ASSERT(aObserver, "null idle observer");
SendRemoveIdleObserver(reinterpret_cast<uint64_t>(aObserver), aIdleTimeInS);
aObserver->Release();
mIdleObservers.RemoveEntry(aObserver);
}
bool
ContentChild::RecvNotifyIdleObserver(const uint64_t& aObserver,
const nsCString& aTopic,
const nsString& aTimeStr)
{
nsIObserver* observer = reinterpret_cast<nsIObserver*>(aObserver);
if (mIdleObservers.Contains(observer)) {
observer->Observe(nullptr, aTopic.get(), aTimeStr.get());
} else {
NS_WARNING("Received notification for an idle observer that was removed.");
}
return true;
}
bool
ContentChild::RecvLoadAndRegisterSheet(const URIParams& aURI, const uint32_t& aType)
{
nsCOMPtr<nsIURI> uri = DeserializeURI(aURI);
if (!uri) {
return true;
}
nsStyleSheetService *sheetService = nsStyleSheetService::GetInstance();
if (sheetService) {
sheetService->LoadAndRegisterSheet(uri, aType);
}
return true;
}
bool
ContentChild::RecvUnregisterSheet(const URIParams& aURI, const uint32_t& aType)
{
nsCOMPtr<nsIURI> uri = DeserializeURI(aURI);
if (!uri) {
return true;
}
nsStyleSheetService *sheetService = nsStyleSheetService::GetInstance();
if (sheetService) {
sheetService->UnregisterSheet(uri, aType);
}
return true;
}
#ifdef MOZ_NUWA_PROCESS
class CallNuwaSpawn : public nsRunnable
{
public:
NS_IMETHOD Run()
{
NuwaSpawn();
if (IsNuwaProcess()) {
return NS_OK;
}
// In the new process.
ContentChild* child = ContentChild::GetSingleton();
child->SetProcessName(NS_LITERAL_STRING("(Preallocated app)"), false);
mozilla::ipc::Transport* transport = child->GetTransport();
int fd = transport->GetFileDescriptor();
transport->ResetFileDescriptor(fd);
IToplevelProtocol* toplevel = child->GetFirstOpenedActors();
while (toplevel != nullptr) {
transport = toplevel->GetTransport();
fd = transport->GetFileDescriptor();
transport->ResetFileDescriptor(fd);
toplevel = toplevel->getNext();
}
// Perform other after-fork initializations.
InitOnContentProcessCreated();
return NS_OK;
}
};
static void
DoNuwaFork()
{
NS_ASSERTION(NuwaSpawnPrepare != nullptr,
"NuwaSpawnPrepare() is not available!");
NuwaSpawnPrepare(); // NuwaSpawn will be blocked.
{
nsCOMPtr<nsIRunnable> callSpawn(new CallNuwaSpawn());
NS_DispatchToMainThread(callSpawn);
}
// IOThread should be blocked here for waiting NuwaSpawn().
NS_ASSERTION(NuwaSpawnWait != nullptr,
"NuwaSpawnWait() is not available!");
NuwaSpawnWait(); // Now! NuwaSpawn can go.
// Here, we can make sure the spawning was finished.
}
/**
* This function should keep IO thread in a stable state and freeze it
* until the spawning is finished.
*/
static void
RunNuwaFork()
{
if (NuwaCheckpointCurrentThread()) {
DoNuwaFork();
}
}
#endif
bool
ContentChild::RecvNuwaFork()
{
#ifdef MOZ_NUWA_PROCESS
if (sNuwaForking) { // No reentry.
return true;
}
sNuwaForking = true;
// We want to ensure that the PBackground actor gets cloned in the Nuwa
// process before we freeze. Also, we have to do this to avoid deadlock.
// Protocols that are "opened" (e.g. PBackground, PCompositor) block the
// main thread to wait for the IPC thread during the open operation.
// NuwaSpawnWait() blocks the IPC thread to wait for the main thread when
// the Nuwa process is forked. Unless we ensure that the two cannot happen
// at the same time then we risk deadlock. Spinning the event loop here
// guarantees the ordering is safe for PBackground.
while (!BackgroundChild::GetForCurrentThread()) {
if (NS_WARN_IF(!NS_ProcessNextEvent())) {
return false;
}
}
MessageLoop* ioloop = XRE_GetIOMessageLoop();
ioloop->PostTask(FROM_HERE, NewRunnableFunction(RunNuwaFork));
return true;
#else
return false; // Makes the underlying IPC channel abort.
#endif
}
bool
ContentChild::RecvOnAppThemeChanged()
{
nsCOMPtr<nsIObserverService> os = services::GetObserverService();
if (os) {
os->NotifyObservers(nullptr, "app-theme-changed", nullptr);
}
return true;
}
} // namespace dom
} // namespace mozilla
extern "C" {
#if defined(MOZ_NUWA_PROCESS)
NS_EXPORT void
GetProtoFdInfos(NuwaProtoFdInfo* aInfoList,
size_t aInfoListSize,
size_t* aInfoSize)
{
size_t i = 0;
mozilla::dom::ContentChild* content =
mozilla::dom::ContentChild::GetSingleton();
aInfoList[i].protoId = content->GetProtocolId();
aInfoList[i].originFd =
content->GetTransport()->GetFileDescriptor();
i++;
for (IToplevelProtocol* actor = content->GetFirstOpenedActors();
actor != nullptr;
actor = actor->getNext()) {
if (i >= aInfoListSize) {
NS_RUNTIMEABORT("Too many top level protocols!");
}
aInfoList[i].protoId = actor->GetProtocolId();
aInfoList[i].originFd =
actor->GetTransport()->GetFileDescriptor();
i++;
}
if (i > NUWA_TOPLEVEL_MAX) {
NS_RUNTIMEABORT("Too many top level protocols!");
}
*aInfoSize = i;
}
class RunAddNewIPCProcess : public nsRunnable
{
public:
RunAddNewIPCProcess(pid_t aPid,
nsTArray<mozilla::ipc::ProtocolFdMapping>& aMaps)
: mPid(aPid)
{
mMaps.SwapElements(aMaps);
}
NS_IMETHOD Run()
{
mozilla::dom::ContentChild::GetSingleton()->
SendAddNewProcess(mPid, mMaps);
MOZ_ASSERT(sNuwaForking);
sNuwaForking = false;
return NS_OK;
}
private:
pid_t mPid;
nsTArray<mozilla::ipc::ProtocolFdMapping> mMaps;
};
/**
* AddNewIPCProcess() is called by Nuwa process to tell the parent
* process that a new process is created.
*
* In the newly created process, ResetContentChildTransport() is called to
* reset fd for the IPC Channel and the session.
*/
NS_EXPORT void
AddNewIPCProcess(pid_t aPid, NuwaProtoFdInfo* aInfoList, size_t aInfoListSize)
{
nsTArray<mozilla::ipc::ProtocolFdMapping> maps;
for (size_t i = 0; i < aInfoListSize; i++) {
int _fd = aInfoList[i].newFds[NUWA_NEWFD_PARENT];
mozilla::ipc::FileDescriptor fd(_fd);
mozilla::ipc::ProtocolFdMapping map(aInfoList[i].protoId, fd);
maps.AppendElement(map);
}
nsRefPtr<RunAddNewIPCProcess> runner = new RunAddNewIPCProcess(aPid, maps);
NS_DispatchToMainThread(runner);
}
NS_EXPORT void
OnNuwaProcessReady()
{
mozilla::dom::ContentChild* content =
mozilla::dom::ContentChild::GetSingleton();
content->SendNuwaReady();
}
NS_EXPORT void
AfterNuwaFork()
{
SetCurrentProcessPrivileges(base::PRIVILEGES_DEFAULT);
}
#endif // MOZ_NUWA_PROCESS
}
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