gecko/hal/sandbox/SandboxHal.cpp

968 lines
22 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set sw=2 ts=8 et ft=cpp : */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "Hal.h"
#include "HalLog.h"
#include "mozilla/AppProcessChecker.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/hal_sandbox/PHalChild.h"
#include "mozilla/hal_sandbox/PHalParent.h"
#include "mozilla/dom/TabParent.h"
#include "mozilla/dom/TabChild.h"
#include "mozilla/dom/battery/Types.h"
#include "mozilla/dom/network/Types.h"
#include "mozilla/dom/ScreenOrientation.h"
#include "mozilla/Observer.h"
#include "mozilla/unused.h"
#include "WindowIdentifier.h"
using namespace mozilla;
using namespace mozilla::dom;
using namespace mozilla::hal;
namespace mozilla {
namespace hal_sandbox {
static bool sHalChildDestroyed = false;
bool
HalChildDestroyed()
{
return sHalChildDestroyed;
}
static PHalChild* sHal;
static PHalChild*
Hal()
{
if (!sHal) {
sHal = ContentChild::GetSingleton()->SendPHalConstructor();
}
return sHal;
}
void
Vibrate(const nsTArray<uint32_t>& pattern, const WindowIdentifier &id)
{
HAL_LOG("Vibrate: Sending to parent process.");
AutoInfallibleTArray<uint32_t, 8> p(pattern);
WindowIdentifier newID(id);
newID.AppendProcessID();
Hal()->SendVibrate(p, newID.AsArray(), TabChild::GetFrom(newID.GetWindow()));
}
void
CancelVibrate(const WindowIdentifier &id)
{
HAL_LOG("CancelVibrate: Sending to parent process.");
WindowIdentifier newID(id);
newID.AppendProcessID();
Hal()->SendCancelVibrate(newID.AsArray(), TabChild::GetFrom(newID.GetWindow()));
}
void
EnableBatteryNotifications()
{
Hal()->SendEnableBatteryNotifications();
}
void
DisableBatteryNotifications()
{
Hal()->SendDisableBatteryNotifications();
}
void
GetCurrentBatteryInformation(BatteryInformation* aBatteryInfo)
{
Hal()->SendGetCurrentBatteryInformation(aBatteryInfo);
}
void
EnableNetworkNotifications()
{
Hal()->SendEnableNetworkNotifications();
}
void
DisableNetworkNotifications()
{
Hal()->SendDisableNetworkNotifications();
}
void
GetCurrentNetworkInformation(NetworkInformation* aNetworkInfo)
{
Hal()->SendGetCurrentNetworkInformation(aNetworkInfo);
}
void
EnableScreenConfigurationNotifications()
{
Hal()->SendEnableScreenConfigurationNotifications();
}
void
DisableScreenConfigurationNotifications()
{
Hal()->SendDisableScreenConfigurationNotifications();
}
void
GetCurrentScreenConfiguration(ScreenConfiguration* aScreenConfiguration)
{
Hal()->SendGetCurrentScreenConfiguration(aScreenConfiguration);
}
bool
LockScreenOrientation(const dom::ScreenOrientationInternal& aOrientation)
{
bool allowed;
Hal()->SendLockScreenOrientation(aOrientation, &allowed);
return allowed;
}
void
UnlockScreenOrientation()
{
Hal()->SendUnlockScreenOrientation();
}
bool
GetScreenEnabled()
{
bool enabled = false;
Hal()->SendGetScreenEnabled(&enabled);
return enabled;
}
void
SetScreenEnabled(bool aEnabled)
{
Hal()->SendSetScreenEnabled(aEnabled);
}
bool
GetKeyLightEnabled()
{
bool enabled = false;
Hal()->SendGetKeyLightEnabled(&enabled);
return enabled;
}
void
SetKeyLightEnabled(bool aEnabled)
{
Hal()->SendSetKeyLightEnabled(aEnabled);
}
bool
GetCpuSleepAllowed()
{
bool allowed = true;
Hal()->SendGetCpuSleepAllowed(&allowed);
return allowed;
}
void
SetCpuSleepAllowed(bool aAllowed)
{
Hal()->SendSetCpuSleepAllowed(aAllowed);
}
double
GetScreenBrightness()
{
double brightness = 0;
Hal()->SendGetScreenBrightness(&brightness);
return brightness;
}
void
SetScreenBrightness(double aBrightness)
{
Hal()->SendSetScreenBrightness(aBrightness);
}
void
AdjustSystemClock(int64_t aDeltaMilliseconds)
{
Hal()->SendAdjustSystemClock(aDeltaMilliseconds);
}
void
SetTimezone(const nsCString& aTimezoneSpec)
{
Hal()->SendSetTimezone(nsCString(aTimezoneSpec));
}
nsCString
GetTimezone()
{
nsCString timezone;
Hal()->SendGetTimezone(&timezone);
return timezone;
}
int32_t
GetTimezoneOffset()
{
int32_t timezoneOffset;
Hal()->SendGetTimezoneOffset(&timezoneOffset);
return timezoneOffset;
}
void
EnableSystemClockChangeNotifications()
{
Hal()->SendEnableSystemClockChangeNotifications();
}
void
DisableSystemClockChangeNotifications()
{
Hal()->SendDisableSystemClockChangeNotifications();
}
void
EnableSystemTimezoneChangeNotifications()
{
Hal()->SendEnableSystemTimezoneChangeNotifications();
}
void
DisableSystemTimezoneChangeNotifications()
{
Hal()->SendDisableSystemTimezoneChangeNotifications();
}
void
Reboot()
{
NS_RUNTIMEABORT("Reboot() can't be called from sandboxed contexts.");
}
void
PowerOff()
{
NS_RUNTIMEABORT("PowerOff() can't be called from sandboxed contexts.");
}
void
StartForceQuitWatchdog(ShutdownMode aMode, int32_t aTimeoutSecs)
{
NS_RUNTIMEABORT("StartForceQuitWatchdog() can't be called from sandboxed contexts.");
}
void
EnableSensorNotifications(SensorType aSensor) {
Hal()->SendEnableSensorNotifications(aSensor);
}
void
DisableSensorNotifications(SensorType aSensor) {
Hal()->SendDisableSensorNotifications(aSensor);
}
void
EnableWakeLockNotifications()
{
Hal()->SendEnableWakeLockNotifications();
}
void
DisableWakeLockNotifications()
{
Hal()->SendDisableWakeLockNotifications();
}
void
ModifyWakeLock(const nsAString &aTopic,
WakeLockControl aLockAdjust,
WakeLockControl aHiddenAdjust,
uint64_t aProcessID)
{
MOZ_ASSERT(aProcessID != CONTENT_PROCESS_ID_UNKNOWN);
Hal()->SendModifyWakeLock(nsString(aTopic), aLockAdjust, aHiddenAdjust, aProcessID);
}
void
GetWakeLockInfo(const nsAString &aTopic, WakeLockInformation *aWakeLockInfo)
{
Hal()->SendGetWakeLockInfo(nsString(aTopic), aWakeLockInfo);
}
void
EnableSwitchNotifications(SwitchDevice aDevice)
{
Hal()->SendEnableSwitchNotifications(aDevice);
}
void
DisableSwitchNotifications(SwitchDevice aDevice)
{
Hal()->SendDisableSwitchNotifications(aDevice);
}
SwitchState
GetCurrentSwitchState(SwitchDevice aDevice)
{
SwitchState state;
Hal()->SendGetCurrentSwitchState(aDevice, &state);
return state;
}
void
NotifySwitchStateFromInputDevice(SwitchDevice aDevice, SwitchState aState)
{
unused << aDevice;
unused << aState;
NS_RUNTIMEABORT("Only the main process may notify switch state change.");
}
bool
EnableAlarm()
{
NS_RUNTIMEABORT("Alarms can't be programmed from sandboxed contexts. Yet.");
return false;
}
void
DisableAlarm()
{
NS_RUNTIMEABORT("Alarms can't be programmed from sandboxed contexts. Yet.");
}
bool
SetAlarm(int32_t aSeconds, int32_t aNanoseconds)
{
NS_RUNTIMEABORT("Alarms can't be programmed from sandboxed contexts. Yet.");
return false;
}
void
SetProcessPriority(int aPid, ProcessPriority aPriority, uint32_t aLRU)
{
NS_RUNTIMEABORT("Only the main process may set processes' priorities.");
}
void
SetCurrentThreadPriority(ThreadPriority aThreadPriority)
{
NS_RUNTIMEABORT("Setting current thread priority cannot be called from sandboxed contexts.");
}
void
SetThreadPriority(PlatformThreadId aThreadId,
ThreadPriority aThreadPriority)
{
NS_RUNTIMEABORT("Setting thread priority cannot be called from sandboxed contexts.");
}
void
EnableFMRadio(const hal::FMRadioSettings& aSettings)
{
NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
}
void
DisableFMRadio()
{
NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
}
void
FMRadioSeek(const hal::FMRadioSeekDirection& aDirection)
{
NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
}
void
GetFMRadioSettings(FMRadioSettings* aSettings)
{
NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
}
void
SetFMRadioFrequency(const uint32_t aFrequency)
{
NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
}
uint32_t
GetFMRadioFrequency()
{
NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
return 0;
}
bool
IsFMRadioOn()
{
NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
return false;
}
uint32_t
GetFMRadioSignalStrength()
{
NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
return 0;
}
void
CancelFMRadioSeek()
{
NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
}
bool
EnableRDS(uint32_t aMask)
{
NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
return false;
}
void
DisableRDS()
{
NS_RUNTIMEABORT("FM radio cannot be called from sandboxed contexts.");
}
void
FactoryReset(FactoryResetReason& aReason)
{
if (aReason == FactoryResetReason::Normal) {
Hal()->SendFactoryReset(NS_LITERAL_STRING("normal"));
} else if (aReason == FactoryResetReason::Wipe) {
Hal()->SendFactoryReset(NS_LITERAL_STRING("wipe"));
} else if (aReason == FactoryResetReason::Root) {
Hal()->SendFactoryReset(NS_LITERAL_STRING("root"));
}
}
void
StartDiskSpaceWatcher()
{
NS_RUNTIMEABORT("StartDiskSpaceWatcher() can't be called from sandboxed contexts.");
}
void
StopDiskSpaceWatcher()
{
NS_RUNTIMEABORT("StopDiskSpaceWatcher() can't be called from sandboxed contexts.");
}
bool IsHeadphoneEventFromInputDev()
{
NS_RUNTIMEABORT("IsHeadphoneEventFromInputDev() cannot be called from sandboxed contexts.");
return false;
}
class HalParent : public PHalParent
, public BatteryObserver
, public NetworkObserver
, public ISensorObserver
, public WakeLockObserver
, public ScreenConfigurationObserver
, public SwitchObserver
, public SystemClockChangeObserver
, public SystemTimezoneChangeObserver
{
public:
virtual void
ActorDestroy(ActorDestroyReason aWhy) override
{
// NB: you *must* unconditionally unregister your observer here,
// if it *may* be registered below.
hal::UnregisterBatteryObserver(this);
hal::UnregisterNetworkObserver(this);
hal::UnregisterScreenConfigurationObserver(this);
for (int32_t sensor = SENSOR_UNKNOWN + 1;
sensor < NUM_SENSOR_TYPE; ++sensor) {
hal::UnregisterSensorObserver(SensorType(sensor), this);
}
hal::UnregisterWakeLockObserver(this);
hal::UnregisterSystemClockChangeObserver(this);
hal::UnregisterSystemTimezoneChangeObserver(this);
for (int32_t switchDevice = SWITCH_DEVICE_UNKNOWN + 1;
switchDevice < NUM_SWITCH_DEVICE; ++switchDevice) {
hal::UnregisterSwitchObserver(SwitchDevice(switchDevice), this);
}
}
virtual bool
RecvVibrate(InfallibleTArray<unsigned int>&& pattern,
InfallibleTArray<uint64_t>&& id,
PBrowserParent *browserParent) override
{
// We give all content vibration permission.
TabParent *tabParent = TabParent::GetFrom(browserParent);
nsCOMPtr<nsIDOMWindow> window =
do_QueryInterface(tabParent->GetBrowserDOMWindow());
WindowIdentifier newID(id, window);
hal::Vibrate(pattern, newID);
return true;
}
virtual bool
RecvCancelVibrate(InfallibleTArray<uint64_t> &&id,
PBrowserParent *browserParent) override
{
TabParent *tabParent = TabParent::GetFrom(browserParent);
nsCOMPtr<nsIDOMWindow> window =
do_QueryInterface(tabParent->GetBrowserDOMWindow());
WindowIdentifier newID(id, window);
hal::CancelVibrate(newID);
return true;
}
virtual bool
RecvEnableBatteryNotifications() override {
// We give all content battery-status permission.
hal::RegisterBatteryObserver(this);
return true;
}
virtual bool
RecvDisableBatteryNotifications() override {
hal::UnregisterBatteryObserver(this);
return true;
}
virtual bool
RecvGetCurrentBatteryInformation(BatteryInformation* aBatteryInfo) override {
// We give all content battery-status permission.
hal::GetCurrentBatteryInformation(aBatteryInfo);
return true;
}
void Notify(const BatteryInformation& aBatteryInfo) override {
unused << SendNotifyBatteryChange(aBatteryInfo);
}
virtual bool
RecvEnableNetworkNotifications() override {
// We give all content access to this network-status information.
hal::RegisterNetworkObserver(this);
return true;
}
virtual bool
RecvDisableNetworkNotifications() override {
hal::UnregisterNetworkObserver(this);
return true;
}
virtual bool
RecvGetCurrentNetworkInformation(NetworkInformation* aNetworkInfo) override {
hal::GetCurrentNetworkInformation(aNetworkInfo);
return true;
}
void Notify(const NetworkInformation& aNetworkInfo) override {
unused << SendNotifyNetworkChange(aNetworkInfo);
}
virtual bool
RecvEnableScreenConfigurationNotifications() override {
// Screen configuration is used to implement CSS and DOM
// properties, so all content already has access to this.
hal::RegisterScreenConfigurationObserver(this);
return true;
}
virtual bool
RecvDisableScreenConfigurationNotifications() override {
hal::UnregisterScreenConfigurationObserver(this);
return true;
}
virtual bool
RecvGetCurrentScreenConfiguration(ScreenConfiguration* aScreenConfiguration) override {
hal::GetCurrentScreenConfiguration(aScreenConfiguration);
return true;
}
virtual bool
RecvLockScreenOrientation(const dom::ScreenOrientationInternal& aOrientation, bool* aAllowed) override
{
// FIXME/bug 777980: unprivileged content may only lock
// orientation while fullscreen. We should check whether the
// request comes from an actor in a process that might be
// fullscreen. We don't have that information currently.
*aAllowed = hal::LockScreenOrientation(aOrientation);
return true;
}
virtual bool
RecvUnlockScreenOrientation() override
{
hal::UnlockScreenOrientation();
return true;
}
void Notify(const ScreenConfiguration& aScreenConfiguration) override {
unused << SendNotifyScreenConfigurationChange(aScreenConfiguration);
}
virtual bool
RecvGetScreenEnabled(bool* aEnabled) override
{
if (!AssertAppProcessPermission(this, "power")) {
return false;
}
*aEnabled = hal::GetScreenEnabled();
return true;
}
virtual bool
RecvSetScreenEnabled(const bool& aEnabled) override
{
if (!AssertAppProcessPermission(this, "power")) {
return false;
}
hal::SetScreenEnabled(aEnabled);
return true;
}
virtual bool
RecvGetKeyLightEnabled(bool* aEnabled) override
{
if (!AssertAppProcessPermission(this, "power")) {
return false;
}
*aEnabled = hal::GetKeyLightEnabled();
return true;
}
virtual bool
RecvSetKeyLightEnabled(const bool& aEnabled) override
{
if (!AssertAppProcessPermission(this, "power")) {
return false;
}
hal::SetKeyLightEnabled(aEnabled);
return true;
}
virtual bool
RecvGetCpuSleepAllowed(bool* aAllowed) override
{
if (!AssertAppProcessPermission(this, "power")) {
return false;
}
*aAllowed = hal::GetCpuSleepAllowed();
return true;
}
virtual bool
RecvSetCpuSleepAllowed(const bool& aAllowed) override
{
if (!AssertAppProcessPermission(this, "power")) {
return false;
}
hal::SetCpuSleepAllowed(aAllowed);
return true;
}
virtual bool
RecvGetScreenBrightness(double* aBrightness) override
{
if (!AssertAppProcessPermission(this, "power")) {
return false;
}
*aBrightness = hal::GetScreenBrightness();
return true;
}
virtual bool
RecvSetScreenBrightness(const double& aBrightness) override
{
if (!AssertAppProcessPermission(this, "power")) {
return false;
}
hal::SetScreenBrightness(aBrightness);
return true;
}
virtual bool
RecvAdjustSystemClock(const int64_t &aDeltaMilliseconds) override
{
if (!AssertAppProcessPermission(this, "time")) {
return false;
}
hal::AdjustSystemClock(aDeltaMilliseconds);
return true;
}
virtual bool
RecvSetTimezone(const nsCString& aTimezoneSpec) override
{
if (!AssertAppProcessPermission(this, "time")) {
return false;
}
hal::SetTimezone(aTimezoneSpec);
return true;
}
virtual bool
RecvGetTimezone(nsCString *aTimezoneSpec) override
{
if (!AssertAppProcessPermission(this, "time")) {
return false;
}
*aTimezoneSpec = hal::GetTimezone();
return true;
}
virtual bool
RecvGetTimezoneOffset(int32_t *aTimezoneOffset) override
{
if (!AssertAppProcessPermission(this, "time")) {
return false;
}
*aTimezoneOffset = hal::GetTimezoneOffset();
return true;
}
virtual bool
RecvEnableSystemClockChangeNotifications() override
{
hal::RegisterSystemClockChangeObserver(this);
return true;
}
virtual bool
RecvDisableSystemClockChangeNotifications() override
{
hal::UnregisterSystemClockChangeObserver(this);
return true;
}
virtual bool
RecvEnableSystemTimezoneChangeNotifications() override
{
hal::RegisterSystemTimezoneChangeObserver(this);
return true;
}
virtual bool
RecvDisableSystemTimezoneChangeNotifications() override
{
hal::UnregisterSystemTimezoneChangeObserver(this);
return true;
}
virtual bool
RecvEnableSensorNotifications(const SensorType &aSensor) override {
// We currently allow any content to register device-sensor
// listeners.
hal::RegisterSensorObserver(aSensor, this);
return true;
}
virtual bool
RecvDisableSensorNotifications(const SensorType &aSensor) override {
hal::UnregisterSensorObserver(aSensor, this);
return true;
}
void Notify(const SensorData& aSensorData) override {
unused << SendNotifySensorChange(aSensorData);
}
virtual bool
RecvModifyWakeLock(const nsString& aTopic,
const WakeLockControl& aLockAdjust,
const WakeLockControl& aHiddenAdjust,
const uint64_t& aProcessID) override
{
MOZ_ASSERT(aProcessID != CONTENT_PROCESS_ID_UNKNOWN);
// We allow arbitrary content to use wake locks.
hal::ModifyWakeLock(aTopic, aLockAdjust, aHiddenAdjust, aProcessID);
return true;
}
virtual bool
RecvEnableWakeLockNotifications() override
{
// We allow arbitrary content to use wake locks.
hal::RegisterWakeLockObserver(this);
return true;
}
virtual bool
RecvDisableWakeLockNotifications() override
{
hal::UnregisterWakeLockObserver(this);
return true;
}
virtual bool
RecvGetWakeLockInfo(const nsString &aTopic, WakeLockInformation *aWakeLockInfo) override
{
hal::GetWakeLockInfo(aTopic, aWakeLockInfo);
return true;
}
void Notify(const WakeLockInformation& aWakeLockInfo) override
{
unused << SendNotifyWakeLockChange(aWakeLockInfo);
}
virtual bool
RecvEnableSwitchNotifications(const SwitchDevice& aDevice) override
{
// Content has no reason to listen to switch events currently.
hal::RegisterSwitchObserver(aDevice, this);
return true;
}
virtual bool
RecvDisableSwitchNotifications(const SwitchDevice& aDevice) override
{
hal::UnregisterSwitchObserver(aDevice, this);
return true;
}
void Notify(const SwitchEvent& aSwitchEvent) override
{
unused << SendNotifySwitchChange(aSwitchEvent);
}
virtual bool
RecvGetCurrentSwitchState(const SwitchDevice& aDevice, hal::SwitchState *aState) override
{
// Content has no reason to listen to switch events currently.
*aState = hal::GetCurrentSwitchState(aDevice);
return true;
}
void Notify(const int64_t& aClockDeltaMS) override
{
unused << SendNotifySystemClockChange(aClockDeltaMS);
}
void Notify(const SystemTimezoneChangeInformation& aSystemTimezoneChangeInfo) override
{
unused << SendNotifySystemTimezoneChange(aSystemTimezoneChangeInfo);
}
virtual bool
RecvFactoryReset(const nsString& aReason) override
{
if (!AssertAppProcessPermission(this, "power")) {
return false;
}
FactoryResetReason reason = FactoryResetReason::Normal;
if (aReason.EqualsLiteral("normal")) {
reason = FactoryResetReason::Normal;
} else if (aReason.EqualsLiteral("wipe")) {
reason = FactoryResetReason::Wipe;
} else if (aReason.EqualsLiteral("root")) {
reason = FactoryResetReason::Root;
} else {
// Invalid factory reset reason. That should never happen.
return false;
}
hal::FactoryReset(reason);
return true;
}
virtual mozilla::ipc::IProtocol*
CloneProtocol(Channel* aChannel,
mozilla::ipc::ProtocolCloneContext* aCtx) override
{
ContentParent* contentParent = aCtx->GetContentParent();
nsAutoPtr<PHalParent> actor(contentParent->AllocPHalParent());
if (!actor || !contentParent->RecvPHalConstructor(actor)) {
return nullptr;
}
return actor.forget();
}
};
class HalChild : public PHalChild {
public:
virtual void
ActorDestroy(ActorDestroyReason aWhy) override
{
sHalChildDestroyed = true;
}
virtual bool
RecvNotifyBatteryChange(const BatteryInformation& aBatteryInfo) override {
hal::NotifyBatteryChange(aBatteryInfo);
return true;
}
virtual bool
RecvNotifySensorChange(const hal::SensorData &aSensorData) override;
virtual bool
RecvNotifyNetworkChange(const NetworkInformation& aNetworkInfo) override {
hal::NotifyNetworkChange(aNetworkInfo);
return true;
}
virtual bool
RecvNotifyWakeLockChange(const WakeLockInformation& aWakeLockInfo) override {
hal::NotifyWakeLockChange(aWakeLockInfo);
return true;
}
virtual bool
RecvNotifyScreenConfigurationChange(const ScreenConfiguration& aScreenConfiguration) override {
hal::NotifyScreenConfigurationChange(aScreenConfiguration);
return true;
}
virtual bool
RecvNotifySwitchChange(const mozilla::hal::SwitchEvent& aEvent) override {
hal::NotifySwitchChange(aEvent);
return true;
}
virtual bool
RecvNotifySystemClockChange(const int64_t& aClockDeltaMS) override {
hal::NotifySystemClockChange(aClockDeltaMS);
return true;
}
virtual bool
RecvNotifySystemTimezoneChange(
const SystemTimezoneChangeInformation& aSystemTimezoneChangeInfo) override {
hal::NotifySystemTimezoneChange(aSystemTimezoneChangeInfo);
return true;
}
};
bool
HalChild::RecvNotifySensorChange(const hal::SensorData &aSensorData) {
hal::NotifySensorChange(aSensorData);
return true;
}
PHalChild* CreateHalChild() {
return new HalChild();
}
PHalParent* CreateHalParent() {
return new HalParent();
}
} // namespace hal_sandbox
} // namespace mozilla