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gecko-dev/dom/geolocation/nsGeolocation.cpp

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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/. */
#include "nsGeolocation.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/PermissionMessageUtils.h"
#include "mozilla/Preferences.h"
#include "mozilla/Services.h"
#include "mozilla/Telemetry.h"
#include "mozilla/UniquePtr.h"
#include "mozilla/Unused.h"
#include "mozilla/WeakPtr.h"
#include "mozilla/EventStateManager.h"
#include "nsComponentManagerUtils.h"
#include "nsContentPermissionHelper.h"
#include "nsContentUtils.h"
#include "nsGlobalWindow.h"
#include "nsIDocument.h"
#include "nsINamed.h"
#include "nsIObserverService.h"
#include "nsIScriptError.h"
#include "nsPIDOMWindow.h"
#include "nsServiceManagerUtils.h"
#include "nsThreadUtils.h"
#include "nsXULAppAPI.h"
class nsIPrincipal;
#ifdef MOZ_WIDGET_ANDROID
#include "AndroidLocationProvider.h"
#endif
#ifdef MOZ_GPSD
#include "GpsdLocationProvider.h"
#endif
#ifdef MOZ_WIDGET_COCOA
#include "CoreLocationLocationProvider.h"
#endif
#ifdef XP_WIN
#include "WindowsLocationProvider.h"
#include "mozilla/WindowsVersion.h"
#endif
// Some limit to the number of get or watch geolocation requests
// that a window can make.
#define MAX_GEO_REQUESTS_PER_WINDOW 1500
// This preference allows to override the "secure context" by
// default policy.
#define PREF_GEO_SECURITY_ALLOWINSECURE "geo.security.allowinsecure"
using mozilla::Unused; // <snicker>
using namespace mozilla;
using namespace mozilla::dom;
class nsGeolocationRequest final
: public nsIContentPermissionRequest
, public nsIGeolocationUpdate
, public SupportsWeakPtr<nsGeolocationRequest>
{
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_NSICONTENTPERMISSIONREQUEST
NS_DECL_NSIGEOLOCATIONUPDATE
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsGeolocationRequest, nsIContentPermissionRequest)
nsGeolocationRequest(Geolocation* aLocator,
GeoPositionCallback aCallback,
GeoPositionErrorCallback aErrorCallback,
UniquePtr<PositionOptions>&& aOptions,
uint8_t aProtocolType,
nsIEventTarget* aMainThreadTarget,
bool aWatchPositionRequest = false,
bool aIsHandlingUserInput = false,
int32_t aWatchId = 0);
MOZ_DECLARE_WEAKREFERENCE_TYPENAME(nsGeolocationRequest)
void Shutdown();
void SendLocation(nsIDOMGeoPosition* aLocation);
bool WantsHighAccuracy() {return !mShutdown && mOptions && mOptions->mEnableHighAccuracy;}
void SetTimeoutTimer();
void StopTimeoutTimer();
void NotifyErrorAndShutdown(uint16_t);
nsIPrincipal* GetPrincipal();
bool IsWatch() { return mIsWatchPositionRequest; }
int32_t WatchId() { return mWatchId; }
private:
virtual ~nsGeolocationRequest();
class TimerCallbackHolder final : public nsITimerCallback
, public nsINamed
{
public:
NS_DECL_ISUPPORTS
NS_DECL_NSITIMERCALLBACK
explicit TimerCallbackHolder(nsGeolocationRequest* aRequest)
: mRequest(aRequest)
{}
NS_IMETHOD GetName(nsACString& aName) override
{
aName.AssignLiteral("nsGeolocationRequest::TimerCallbackHolder");
return NS_OK;
}
private:
~TimerCallbackHolder() = default;
WeakPtr<nsGeolocationRequest> mRequest;
};
void Notify();
bool mIsWatchPositionRequest;
nsCOMPtr<nsITimer> mTimeoutTimer;
GeoPositionCallback mCallback;
GeoPositionErrorCallback mErrorCallback;
UniquePtr<PositionOptions> mOptions;
bool mIsHandlingUserInput;
RefPtr<Geolocation> mLocator;
int32_t mWatchId;
bool mShutdown;
nsCOMPtr<nsIContentPermissionRequester> mRequester;
uint8_t mProtocolType;
nsCOMPtr<nsIEventTarget> mMainThreadTarget;
};
static UniquePtr<PositionOptions>
CreatePositionOptionsCopy(const PositionOptions& aOptions)
{
UniquePtr<PositionOptions> geoOptions = MakeUnique<PositionOptions>();
geoOptions->mEnableHighAccuracy = aOptions.mEnableHighAccuracy;
geoOptions->mMaximumAge = aOptions.mMaximumAge;
geoOptions->mTimeout = aOptions.mTimeout;
return geoOptions;
}
class RequestPromptEvent : public Runnable
{
public:
RequestPromptEvent(nsGeolocationRequest* aRequest, nsWeakPtr aWindow)
: mozilla::Runnable("RequestPromptEvent")
, mRequest(aRequest)
, mWindow(aWindow)
{
}
NS_IMETHOD Run() override
{
nsCOMPtr<nsPIDOMWindowInner> window = do_QueryReferent(mWindow);
nsContentPermissionUtils::AskPermission(mRequest, window);
return NS_OK;
}
private:
RefPtr<nsGeolocationRequest> mRequest;
nsWeakPtr mWindow;
};
class RequestAllowEvent : public Runnable
{
public:
RequestAllowEvent(int allow, nsGeolocationRequest* request)
: mozilla::Runnable("RequestAllowEvent")
, mAllow(allow)
, mRequest(request)
{
}
NS_IMETHOD Run() override {
if (mAllow) {
mRequest->Allow(JS::UndefinedHandleValue);
} else {
mRequest->Cancel();
}
return NS_OK;
}
private:
bool mAllow;
RefPtr<nsGeolocationRequest> mRequest;
};
class RequestSendLocationEvent : public Runnable
{
public:
RequestSendLocationEvent(nsIDOMGeoPosition* aPosition,
nsGeolocationRequest* aRequest)
: mozilla::Runnable("RequestSendLocationEvent")
, mPosition(aPosition)
, mRequest(aRequest)
{
}
NS_IMETHOD Run() override {
mRequest->SendLocation(mPosition);
return NS_OK;
}
private:
nsCOMPtr<nsIDOMGeoPosition> mPosition;
RefPtr<nsGeolocationRequest> mRequest;
RefPtr<Geolocation> mLocator;
};
////////////////////////////////////////////////////
// PositionError
////////////////////////////////////////////////////
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(PositionError)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMGeoPositionError)
NS_INTERFACE_MAP_ENTRY(nsIDOMGeoPositionError)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(PositionError, mParent)
NS_IMPL_CYCLE_COLLECTING_ADDREF(PositionError)
NS_IMPL_CYCLE_COLLECTING_RELEASE(PositionError)
PositionError::PositionError(Geolocation* aParent, int16_t aCode)
: mCode(aCode)
, mParent(aParent)
{
}
PositionError::~PositionError() = default;
NS_IMETHODIMP
PositionError::GetCode(int16_t *aCode)
{
NS_ENSURE_ARG_POINTER(aCode);
*aCode = Code();
return NS_OK;
}
NS_IMETHODIMP
PositionError::GetMessage(nsAString& aMessage)
{
switch (mCode)
{
case nsIDOMGeoPositionError::PERMISSION_DENIED:
aMessage = NS_LITERAL_STRING("User denied geolocation prompt");
break;
case nsIDOMGeoPositionError::POSITION_UNAVAILABLE:
aMessage = NS_LITERAL_STRING("Unknown error acquiring position");
break;
case nsIDOMGeoPositionError::TIMEOUT:
aMessage = NS_LITERAL_STRING("Position acquisition timed out");
break;
default:
break;
}
return NS_OK;
}
Geolocation*
PositionError::GetParentObject() const
{
return mParent;
}
JSObject*
PositionError::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return PositionErrorBinding::Wrap(aCx, this, aGivenProto);
}
void
PositionError::NotifyCallback(const GeoPositionErrorCallback& aCallback)
{
nsAutoMicroTask mt;
if (aCallback.HasWebIDLCallback()) {
PositionErrorCallback* callback = aCallback.GetWebIDLCallback();
if (callback) {
callback->Call(*this);
}
} else {
nsIDOMGeoPositionErrorCallback* callback = aCallback.GetXPCOMCallback();
if (callback) {
callback->HandleEvent(this);
}
}
}
////////////////////////////////////////////////////
// nsGeolocationRequest
////////////////////////////////////////////////////
nsGeolocationRequest::nsGeolocationRequest(Geolocation* aLocator,
GeoPositionCallback aCallback,
GeoPositionErrorCallback aErrorCallback,
UniquePtr<PositionOptions>&& aOptions,
uint8_t aProtocolType,
nsIEventTarget* aMainThreadTarget,
bool aWatchPositionRequest,
bool aIsHandlingUserInput,
int32_t aWatchId)
: mIsWatchPositionRequest(aWatchPositionRequest),
mCallback(Move(aCallback)),
mErrorCallback(Move(aErrorCallback)),
mOptions(Move(aOptions)),
mIsHandlingUserInput(aIsHandlingUserInput),
mLocator(aLocator),
mWatchId(aWatchId),
mShutdown(false),
mProtocolType(aProtocolType),
mMainThreadTarget(aMainThreadTarget)
{
if (nsCOMPtr<nsPIDOMWindowInner> win =
do_QueryReferent(mLocator->GetOwner())) {
mRequester = new nsContentPermissionRequester(win);
}
}
nsGeolocationRequest::~nsGeolocationRequest()
{
StopTimeoutTimer();
}
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsGeolocationRequest)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIContentPermissionRequest)
NS_INTERFACE_MAP_ENTRY(nsIContentPermissionRequest)
NS_INTERFACE_MAP_ENTRY(nsIGeolocationUpdate)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsGeolocationRequest)
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsGeolocationRequest)
NS_IMPL_CYCLE_COLLECTION(nsGeolocationRequest, mCallback, mErrorCallback, mLocator)
void
nsGeolocationRequest::Notify()
{
SetTimeoutTimer();
NotifyErrorAndShutdown(nsIDOMGeoPositionError::TIMEOUT);
}
void
nsGeolocationRequest::NotifyErrorAndShutdown(uint16_t aErrorCode)
{
MOZ_ASSERT(!mShutdown, "timeout after shutdown");
if (!mIsWatchPositionRequest) {
Shutdown();
mLocator->RemoveRequest(this);
}
NotifyError(aErrorCode);
}
NS_IMETHODIMP
nsGeolocationRequest::GetPrincipal(nsIPrincipal * *aRequestingPrincipal)
{
NS_ENSURE_ARG_POINTER(aRequestingPrincipal);
nsCOMPtr<nsIPrincipal> principal = mLocator->GetPrincipal();
principal.forget(aRequestingPrincipal);
return NS_OK;
}
NS_IMETHODIMP
nsGeolocationRequest::GetTypes(nsIArray** aTypes)
{
nsTArray<nsString> emptyOptions;
return nsContentPermissionUtils::CreatePermissionArray(NS_LITERAL_CSTRING("geolocation"),
NS_LITERAL_CSTRING("unused"),
emptyOptions,
aTypes);
}
NS_IMETHODIMP
nsGeolocationRequest::GetWindow(mozIDOMWindow** aRequestingWindow)
{
NS_ENSURE_ARG_POINTER(aRequestingWindow);
nsCOMPtr<nsPIDOMWindowInner> window = do_QueryReferent(mLocator->GetOwner());
window.forget(aRequestingWindow);
return NS_OK;
}
NS_IMETHODIMP
nsGeolocationRequest::GetElement(nsIDOMElement * *aRequestingElement)
{
NS_ENSURE_ARG_POINTER(aRequestingElement);
*aRequestingElement = nullptr;
return NS_OK;
}
NS_IMETHODIMP
nsGeolocationRequest::GetIsHandlingUserInput(bool* aIsHandlingUserInput)
{
*aIsHandlingUserInput = mIsHandlingUserInput;
return NS_OK;
}
NS_IMETHODIMP
nsGeolocationRequest::Cancel()
{
if (mRequester) {
// Record the number of denied requests for regular web content.
// This method is only called when the user explicitly denies the request,
// and is not called when the page is simply unloaded, or similar.
Telemetry::Accumulate(Telemetry::GEOLOCATION_REQUEST_GRANTED, mProtocolType);
}
if (mLocator->ClearPendingRequest(this)) {
return NS_OK;
}
NotifyError(nsIDOMGeoPositionError::PERMISSION_DENIED);
return NS_OK;
}
NS_IMETHODIMP
nsGeolocationRequest::Allow(JS::HandleValue aChoices)
{
MOZ_ASSERT(aChoices.isUndefined());
if (mRequester) {
// Record the number of granted requests for regular web content.
Telemetry::Accumulate(Telemetry::GEOLOCATION_REQUEST_GRANTED, mProtocolType + 10);
// Record whether a location callback is fulfilled while the owner window
// is not visible.
bool isVisible = false;
nsCOMPtr<nsPIDOMWindowInner> window = mLocator->GetParentObject();
if (window) {
nsCOMPtr<nsIDocument> doc = window->GetDoc();
isVisible = doc && !doc->Hidden();
}
if (IsWatch()) {
mozilla::Telemetry::Accumulate(mozilla::Telemetry::GEOLOCATION_WATCHPOSITION_VISIBLE, isVisible);
} else {
mozilla::Telemetry::Accumulate(mozilla::Telemetry::GEOLOCATION_GETCURRENTPOSITION_VISIBLE, isVisible);
}
}
if (mLocator->ClearPendingRequest(this)) {
return NS_OK;
}
RefPtr<nsGeolocationService> gs = nsGeolocationService::GetGeolocationService();
bool canUseCache = false;
CachedPositionAndAccuracy lastPosition = gs->GetCachedPosition();
if (lastPosition.position) {
DOMTimeStamp cachedPositionTime_ms;
lastPosition.position->GetTimestamp(&cachedPositionTime_ms);
// check to see if we can use a cached value
// if the user has specified a maximumAge, return a cached value.
if (mOptions && mOptions->mMaximumAge > 0) {
uint32_t maximumAge_ms = mOptions->mMaximumAge;
bool isCachedWithinRequestedAccuracy = WantsHighAccuracy() <= lastPosition.isHighAccuracy;
bool isCachedWithinRequestedTime =
DOMTimeStamp(PR_Now() / PR_USEC_PER_MSEC - maximumAge_ms) <= cachedPositionTime_ms;
canUseCache = isCachedWithinRequestedAccuracy && isCachedWithinRequestedTime;
}
}
gs->UpdateAccuracy(WantsHighAccuracy());
if (canUseCache) {
// okay, we can return a cached position
// getCurrentPosition requests serviced by the cache
// will now be owned by the RequestSendLocationEvent
Update(lastPosition.position);
// After Update is called, getCurrentPosition finishes it's job.
if (!mIsWatchPositionRequest) {
return NS_OK;
}
} else {
// if it is not a watch request and timeout is 0,
// invoke the errorCallback (if present) with TIMEOUT code
if (mOptions && mOptions->mTimeout == 0 && !mIsWatchPositionRequest) {
NotifyError(nsIDOMGeoPositionError::TIMEOUT);
return NS_OK;
}
}
// Kick off the geo device, if it isn't already running
nsresult rv = gs->StartDevice(GetPrincipal());
if (NS_FAILED(rv)) {
// Location provider error
NotifyError(nsIDOMGeoPositionError::POSITION_UNAVAILABLE);
return NS_OK;
}
if (mIsWatchPositionRequest || !canUseCache) {
// let the locator know we're pending
// we will now be owned by the locator
mLocator->NotifyAllowedRequest(this);
}
SetTimeoutTimer();
return NS_OK;
}
NS_IMETHODIMP
nsGeolocationRequest::GetRequester(nsIContentPermissionRequester** aRequester)
{
NS_ENSURE_ARG_POINTER(aRequester);
nsCOMPtr<nsIContentPermissionRequester> requester = mRequester;
requester.forget(aRequester);
return NS_OK;
}
void
nsGeolocationRequest::SetTimeoutTimer()
{
MOZ_ASSERT(!mShutdown, "set timeout after shutdown");
StopTimeoutTimer();
if (mOptions && mOptions->mTimeout != 0 && mOptions->mTimeout != 0x7fffffff) {
RefPtr<TimerCallbackHolder> holder = new TimerCallbackHolder(this);
NS_NewTimerWithCallback(getter_AddRefs(mTimeoutTimer),
holder, mOptions->mTimeout, nsITimer::TYPE_ONE_SHOT);
}
}
void
nsGeolocationRequest::StopTimeoutTimer()
{
if (mTimeoutTimer) {
mTimeoutTimer->Cancel();
mTimeoutTimer = nullptr;
}
}
void
nsGeolocationRequest::SendLocation(nsIDOMGeoPosition* aPosition)
{
if (mShutdown) {
// Ignore SendLocationEvents issued before we were cleared.
return;
}
if (mOptions && mOptions->mMaximumAge > 0) {
DOMTimeStamp positionTime_ms;
aPosition->GetTimestamp(&positionTime_ms);
const uint32_t maximumAge_ms = mOptions->mMaximumAge;
const bool isTooOld =
DOMTimeStamp(PR_Now() / PR_USEC_PER_MSEC - maximumAge_ms) > positionTime_ms;
if (isTooOld) {
return;
}
}
RefPtr<mozilla::dom::Position> wrapped;
if (aPosition) {
nsCOMPtr<nsIDOMGeoPositionCoords> coords;
aPosition->GetCoords(getter_AddRefs(coords));
if (coords) {
wrapped = new mozilla::dom::Position(ToSupports(mLocator), aPosition);
}
}
if (!wrapped) {
NotifyError(nsIDOMGeoPositionError::POSITION_UNAVAILABLE);
return;
}
if (!mIsWatchPositionRequest) {
// Cancel timer and position updates in case the position
// callback spins the event loop
Shutdown();
}
nsAutoMicroTask mt;
if (mCallback.HasWebIDLCallback()) {
PositionCallback* callback = mCallback.GetWebIDLCallback();
MOZ_ASSERT(callback);
callback->Call(*wrapped);
} else {
nsIDOMGeoPositionCallback* callback = mCallback.GetXPCOMCallback();
MOZ_ASSERT(callback);
callback->HandleEvent(aPosition);
}
if (mIsWatchPositionRequest && !mShutdown) {
SetTimeoutTimer();
}
MOZ_ASSERT(mShutdown || mIsWatchPositionRequest,
"non-shutdown getCurrentPosition request after callback!");
}
nsIPrincipal*
nsGeolocationRequest::GetPrincipal()
{
if (!mLocator) {
return nullptr;
}
return mLocator->GetPrincipal();
}
NS_IMETHODIMP
nsGeolocationRequest::Update(nsIDOMGeoPosition* aPosition)
{
nsCOMPtr<nsIRunnable> ev = new RequestSendLocationEvent(aPosition, this);
mMainThreadTarget->Dispatch(ev.forget());
return NS_OK;
}
NS_IMETHODIMP
nsGeolocationRequest::NotifyError(uint16_t aErrorCode)
{
MOZ_ASSERT(NS_IsMainThread());
RefPtr<PositionError> positionError = new PositionError(mLocator, aErrorCode);
positionError->NotifyCallback(mErrorCallback);
return NS_OK;
}
void
nsGeolocationRequest::Shutdown()
{
MOZ_ASSERT(!mShutdown, "request shutdown twice");
mShutdown = true;
StopTimeoutTimer();
// If there are no other high accuracy requests, the geolocation service will
// notify the provider to switch to the default accuracy.
if (mOptions && mOptions->mEnableHighAccuracy) {
RefPtr<nsGeolocationService> gs = nsGeolocationService::GetGeolocationService();
if (gs) {
gs->UpdateAccuracy();
}
}
}
////////////////////////////////////////////////////
// nsGeolocationRequest::TimerCallbackHolder
////////////////////////////////////////////////////
NS_IMPL_ISUPPORTS(nsGeolocationRequest::TimerCallbackHolder,
nsITimerCallback,
nsINamed)
NS_IMETHODIMP
nsGeolocationRequest::TimerCallbackHolder::Notify(nsITimer*)
{
if (mRequest && mRequest->mLocator) {
RefPtr<nsGeolocationRequest> request(mRequest);
request->Notify();
}
return NS_OK;
}
////////////////////////////////////////////////////
// nsGeolocationService
////////////////////////////////////////////////////
NS_INTERFACE_MAP_BEGIN(nsGeolocationService)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIGeolocationUpdate)
NS_INTERFACE_MAP_ENTRY(nsIGeolocationUpdate)
NS_INTERFACE_MAP_ENTRY(nsIObserver)
NS_INTERFACE_MAP_END
NS_IMPL_ADDREF(nsGeolocationService)
NS_IMPL_RELEASE(nsGeolocationService)
static bool sGeoEnabled = true;
static int32_t sProviderTimeout = 6000; // Time, in milliseconds, to wait for the location provider to spin up.
nsresult nsGeolocationService::Init()
{
Preferences::AddIntVarCache(&sProviderTimeout, "geo.timeout", sProviderTimeout);
Preferences::AddBoolVarCache(&sGeoEnabled, "geo.enabled", sGeoEnabled);
if (!sGeoEnabled) {
return NS_ERROR_FAILURE;
}
if (XRE_IsContentProcess()) {
return NS_OK;
}
// geolocation service can be enabled -> now register observer
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
if (!obs) {
return NS_ERROR_FAILURE;
}
obs->AddObserver(this, "xpcom-shutdown", false);
#ifdef MOZ_WIDGET_ANDROID
mProvider = new AndroidLocationProvider();
#endif
#ifdef MOZ_WIDGET_GTK
#ifdef MOZ_GPSD
if (Preferences::GetBool("geo.provider.use_gpsd", false)) {
mProvider = new GpsdLocationProvider();
}
#endif
#endif
#ifdef MOZ_WIDGET_COCOA
if (Preferences::GetBool("geo.provider.use_corelocation", true)) {
mProvider = new CoreLocationLocationProvider();
}
#endif
#ifdef XP_WIN
if (Preferences::GetBool("geo.provider.ms-windows-location", false) &&
IsWin8OrLater()) {
mProvider = new WindowsLocationProvider();
}
#endif
if (Preferences::GetBool("geo.provider.use_mls", false)) {
mProvider = do_CreateInstance("@mozilla.org/geolocation/mls-provider;1");
}
// Override platform-specific providers with the default (network)
// provider while testing. Our tests are currently not meant to exercise
// the provider, and some tests rely on the network provider being used.
// "geo.provider.testing" is always set for all plain and browser chrome
// mochitests, and also for xpcshell tests.
if (!mProvider || Preferences::GetBool("geo.provider.testing", false)) {
nsCOMPtr<nsIGeolocationProvider> geoTestProvider =
do_GetService(NS_GEOLOCATION_PROVIDER_CONTRACTID);
if (geoTestProvider) {
mProvider = geoTestProvider;
}
}
return NS_OK;
}
nsGeolocationService::~nsGeolocationService() = default;
NS_IMETHODIMP
nsGeolocationService::Observe(nsISupports* aSubject,
const char* aTopic,
const char16_t* aData)
{
if (!strcmp("xpcom-shutdown", aTopic)) {
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
if (obs) {
obs->RemoveObserver(this, "xpcom-shutdown");
}
for (uint32_t i = 0; i< mGeolocators.Length(); i++) {
mGeolocators[i]->Shutdown();
}
StopDevice();
return NS_OK;
}
if (!strcmp("timer-callback", aTopic)) {
// decide if we can close down the service.
for (uint32_t i = 0; i< mGeolocators.Length(); i++)
if (mGeolocators[i]->HasActiveCallbacks()) {
SetDisconnectTimer();
return NS_OK;
}
// okay to close up.
StopDevice();
Update(nullptr);
return NS_OK;
}
return NS_ERROR_FAILURE;
}
NS_IMETHODIMP
nsGeolocationService::Update(nsIDOMGeoPosition *aSomewhere)
{
if (aSomewhere) {
SetCachedPosition(aSomewhere);
}
for (uint32_t i = 0; i< mGeolocators.Length(); i++) {
mGeolocators[i]->Update(aSomewhere);
}
return NS_OK;
}
NS_IMETHODIMP
nsGeolocationService::NotifyError(uint16_t aErrorCode)
{
for (uint32_t i = 0; i < mGeolocators.Length(); i++) {
mGeolocators[i]->NotifyError(aErrorCode);
}
return NS_OK;
}
void
nsGeolocationService::SetCachedPosition(nsIDOMGeoPosition* aPosition)
{
mLastPosition.position = aPosition;
mLastPosition.isHighAccuracy = mHigherAccuracy;
}
CachedPositionAndAccuracy
nsGeolocationService::GetCachedPosition()
{
return mLastPosition;
}
nsresult
nsGeolocationService::StartDevice(nsIPrincipal *aPrincipal)
{
if (!sGeoEnabled) {
return NS_ERROR_NOT_AVAILABLE;
}
// We do not want to keep the geolocation devices online
// indefinitely.
// Close them down after a reasonable period of inactivivity.
SetDisconnectTimer();
if (XRE_IsContentProcess()) {
ContentChild* cpc = ContentChild::GetSingleton();
cpc->SendAddGeolocationListener(IPC::Principal(aPrincipal),
HighAccuracyRequested());
return NS_OK;
}
// Start them up!
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
if (!obs) {
return NS_ERROR_FAILURE;
}
if (!mProvider) {
return NS_ERROR_FAILURE;
}
nsresult rv;
if (NS_FAILED(rv = mProvider->Startup()) ||
NS_FAILED(rv = mProvider->Watch(this))) {
NotifyError(nsIDOMGeoPositionError::POSITION_UNAVAILABLE);
return rv;
}
obs->NotifyObservers(mProvider,
"geolocation-device-events",
u"starting");
return NS_OK;
}
void
nsGeolocationService::SetDisconnectTimer()
{
if (!mDisconnectTimer) {
mDisconnectTimer = NS_NewTimer();
} else {
mDisconnectTimer->Cancel();
}
mDisconnectTimer->Init(this,
sProviderTimeout,
nsITimer::TYPE_ONE_SHOT);
}
bool
nsGeolocationService::HighAccuracyRequested()
{
for (uint32_t i = 0; i < mGeolocators.Length(); i++) {
if (mGeolocators[i]->HighAccuracyRequested()) {
return true;
}
}
return false;
}
void
nsGeolocationService::UpdateAccuracy(bool aForceHigh)
{
bool highRequired = aForceHigh || HighAccuracyRequested();
if (XRE_IsContentProcess()) {
ContentChild* cpc = ContentChild::GetSingleton();
if (cpc->IsAlive()) {
cpc->SendSetGeolocationHigherAccuracy(highRequired);
}
return;
}
mProvider->SetHighAccuracy(!mHigherAccuracy && highRequired);
mHigherAccuracy = highRequired;
}
void
nsGeolocationService::StopDevice()
{
if (mDisconnectTimer) {
mDisconnectTimer->Cancel();
mDisconnectTimer = nullptr;
}
if (XRE_IsContentProcess()) {
ContentChild* cpc = ContentChild::GetSingleton();
cpc->SendRemoveGeolocationListener();
return; // bail early
}
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
if (!obs) {
return;
}
if (!mProvider) {
return;
}
mHigherAccuracy = false;
mProvider->Shutdown();
obs->NotifyObservers(mProvider,
"geolocation-device-events",
u"shutdown");
}
StaticRefPtr<nsGeolocationService> nsGeolocationService::sService;
already_AddRefed<nsGeolocationService>
nsGeolocationService::GetGeolocationService()
{
RefPtr<nsGeolocationService> result;
if (nsGeolocationService::sService) {
result = nsGeolocationService::sService;
return result.forget();
}
result = new nsGeolocationService();
if (NS_FAILED(result->Init())) {
return nullptr;
}
ClearOnShutdown(&nsGeolocationService::sService);
nsGeolocationService::sService = result;
return result.forget();
}
void
nsGeolocationService::AddLocator(Geolocation* aLocator)
{
mGeolocators.AppendElement(aLocator);
}
void
nsGeolocationService::RemoveLocator(Geolocation* aLocator)
{
mGeolocators.RemoveElement(aLocator);
}
////////////////////////////////////////////////////
// Geolocation
////////////////////////////////////////////////////
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Geolocation)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDOMGeoGeolocation)
NS_INTERFACE_MAP_ENTRY(nsIDOMGeoGeolocation)
NS_INTERFACE_MAP_ENTRY(nsIGeolocationUpdate)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(Geolocation)
NS_IMPL_CYCLE_COLLECTING_RELEASE(Geolocation)
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(Geolocation,
mPendingCallbacks,
mWatchingCallbacks,
mPendingRequests)
Geolocation::Geolocation()
: mProtocolType(ProtocolType::OTHER)
, mLastWatchId(0)
{
}
Geolocation::~Geolocation()
{
if (mService) {
Shutdown();
}
}
nsresult
Geolocation::Init(nsPIDOMWindowInner* aContentDom)
{
// Remember the window
if (aContentDom) {
mOwner = do_GetWeakReference(aContentDom);
if (!mOwner) {
return NS_ERROR_FAILURE;
}
// Grab the principal of the document
nsCOMPtr<nsIDocument> doc = aContentDom->GetDoc();
if (!doc) {
return NS_ERROR_FAILURE;
}
mPrincipal = doc->NodePrincipal();
nsCOMPtr<nsIURI> uri;
nsresult rv = mPrincipal->GetURI(getter_AddRefs(uri));
NS_ENSURE_SUCCESS(rv, rv);
if (uri) {
bool isHttp;
rv = uri->SchemeIs("http", &isHttp);
NS_ENSURE_SUCCESS(rv, rv);
bool isHttps;
rv = uri->SchemeIs("https", &isHttps);
NS_ENSURE_SUCCESS(rv, rv);
// Store the protocol to send via telemetry later.
if (isHttp) {
mProtocolType = ProtocolType::HTTP;
} else if (isHttps) {
mProtocolType = ProtocolType::HTTPS;
}
}
}
// If no aContentDom was passed into us, we are being used
// by chrome/c++ and have no mOwner, no mPrincipal, and no need
// to prompt.
mService = nsGeolocationService::GetGeolocationService();
if (mService) {
mService->AddLocator(this);
}
return NS_OK;
}
void
Geolocation::Shutdown()
{
// Release all callbacks
mPendingCallbacks.Clear();
mWatchingCallbacks.Clear();
if (mService) {
mService->RemoveLocator(this);
mService->UpdateAccuracy();
}
mService = nullptr;
mPrincipal = nullptr;
}
nsPIDOMWindowInner*
Geolocation::GetParentObject() const {
nsCOMPtr<nsPIDOMWindowInner> window = do_QueryReferent(mOwner);
return window.get();
}
bool
Geolocation::HasActiveCallbacks()
{
return mPendingCallbacks.Length() || mWatchingCallbacks.Length();
}
bool
Geolocation::HighAccuracyRequested()
{
for (uint32_t i = 0; i < mWatchingCallbacks.Length(); i++) {
if (mWatchingCallbacks[i]->WantsHighAccuracy()) {
return true;
}
}
for (uint32_t i = 0; i < mPendingCallbacks.Length(); i++) {
if (mPendingCallbacks[i]->WantsHighAccuracy()) {
return true;
}
}
return false;
}
void
Geolocation::RemoveRequest(nsGeolocationRequest* aRequest)
{
bool requestWasKnown =
(mPendingCallbacks.RemoveElement(aRequest) !=
mWatchingCallbacks.RemoveElement(aRequest));
Unused << requestWasKnown;
}
NS_IMETHODIMP
Geolocation::Update(nsIDOMGeoPosition *aSomewhere)
{
if (!WindowOwnerStillExists()) {
Shutdown();
return NS_OK;
}
if (aSomewhere) {
nsCOMPtr<nsIDOMGeoPositionCoords> coords;
aSomewhere->GetCoords(getter_AddRefs(coords));
if (coords) {
double accuracy = -1;
coords->GetAccuracy(&accuracy);
mozilla::Telemetry::Accumulate(mozilla::Telemetry::GEOLOCATION_ACCURACY_EXPONENTIAL, accuracy);
}
}
for (uint32_t i = mPendingCallbacks.Length(); i > 0; i--) {
mPendingCallbacks[i-1]->Update(aSomewhere);
RemoveRequest(mPendingCallbacks[i-1]);
}
// notify everyone that is watching
for (uint32_t i = 0; i < mWatchingCallbacks.Length(); i++) {
mWatchingCallbacks[i]->Update(aSomewhere);
}
return NS_OK;
}
NS_IMETHODIMP
Geolocation::NotifyError(uint16_t aErrorCode)
{
if (!WindowOwnerStillExists()) {
Shutdown();
return NS_OK;
}
mozilla::Telemetry::Accumulate(mozilla::Telemetry::GEOLOCATION_ERROR, true);
for (uint32_t i = mPendingCallbacks.Length(); i > 0; i--) {
mPendingCallbacks[i-1]->NotifyErrorAndShutdown(aErrorCode);
//NotifyErrorAndShutdown() removes the request from the array
}
// notify everyone that is watching
for (uint32_t i = 0; i < mWatchingCallbacks.Length(); i++) {
mWatchingCallbacks[i]->NotifyErrorAndShutdown(aErrorCode);
}
return NS_OK;
}
bool
Geolocation::IsAlreadyCleared(nsGeolocationRequest* aRequest)
{
for (uint32_t i = 0, length = mClearedWatchIDs.Length(); i < length; ++i) {
if (mClearedWatchIDs[i] == aRequest->WatchId()) {
return true;
}
}
return false;
}
bool
Geolocation::ShouldBlockInsecureRequests() const
{
if (Preferences::GetBool(PREF_GEO_SECURITY_ALLOWINSECURE, false)) {
return false;
}
nsCOMPtr<nsPIDOMWindowInner> win = do_QueryReferent(mOwner);
if (!win) {
return false;
}
nsCOMPtr<nsIDocument> doc = win->GetDoc();
if (!doc) {
return false;
}
if (!nsGlobalWindowInner::Cast(win)->IsSecureContext()) {
nsContentUtils::ReportToConsole(nsIScriptError::errorFlag,
NS_LITERAL_CSTRING("DOM"), doc,
nsContentUtils::eDOM_PROPERTIES,
"GeolocationInsecureRequestIsForbidden");
return true;
}
return false;
}
bool
Geolocation::ClearPendingRequest(nsGeolocationRequest* aRequest)
{
if (aRequest->IsWatch() && this->IsAlreadyCleared(aRequest)) {
this->NotifyAllowedRequest(aRequest);
this->ClearWatch(aRequest->WatchId());
return true;
}
return false;
}
void
Geolocation::GetCurrentPosition(PositionCallback& aCallback,
PositionErrorCallback* aErrorCallback,
const PositionOptions& aOptions,
CallerType aCallerType,
ErrorResult& aRv)
{
nsresult rv = GetCurrentPosition(GeoPositionCallback(&aCallback),
GeoPositionErrorCallback(aErrorCallback),
Move(CreatePositionOptionsCopy(aOptions)),
aCallerType);
if (NS_FAILED(rv)) {
aRv.Throw(rv);
}
}
static nsIEventTarget* MainThreadTarget(Geolocation* geo)
{
nsCOMPtr<nsPIDOMWindowInner> window = do_QueryReferent(geo->GetOwner());
if (!window) {
return GetMainThreadEventTarget();
}
return nsGlobalWindowInner::Cast(window)->EventTargetFor(mozilla::TaskCategory::Other);
}
nsresult
Geolocation::GetCurrentPosition(GeoPositionCallback callback,
GeoPositionErrorCallback errorCallback,
UniquePtr<PositionOptions>&& options,
CallerType aCallerType)
{
if (mPendingCallbacks.Length() > MAX_GEO_REQUESTS_PER_WINDOW) {
return NS_ERROR_NOT_AVAILABLE;
}
// After this we hand over ownership of options to our nsGeolocationRequest.
// Count the number of requests per protocol/scheme.
Telemetry::Accumulate(Telemetry::GEOLOCATION_GETCURRENTPOSITION_SECURE_ORIGIN,
static_cast<uint8_t>(mProtocolType));
nsIEventTarget* target = MainThreadTarget(this);
RefPtr<nsGeolocationRequest> request =
new nsGeolocationRequest(this, Move(callback), Move(errorCallback),
Move(options), static_cast<uint8_t>(mProtocolType), target,
false, EventStateManager::IsHandlingUserInput());
if (!sGeoEnabled || ShouldBlockInsecureRequests() ||
nsContentUtils::ResistFingerprinting(aCallerType)) {
nsCOMPtr<nsIRunnable> ev = new RequestAllowEvent(false, request);
target->Dispatch(ev.forget());
return NS_OK;
}
if (!mOwner && aCallerType != CallerType::System) {
return NS_ERROR_FAILURE;
}
if (mOwner) {
if (!RegisterRequestWithPrompt(request)) {
return NS_ERROR_NOT_AVAILABLE;
}
return NS_OK;
}
if (aCallerType != CallerType::System) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIRunnable> ev = new RequestAllowEvent(true, request);
target->Dispatch(ev.forget());
return NS_OK;
}
int32_t
Geolocation::WatchPosition(PositionCallback& aCallback,
PositionErrorCallback* aErrorCallback,
const PositionOptions& aOptions,
CallerType aCallerType,
ErrorResult& aRv)
{
int32_t ret = 0;
nsresult rv = WatchPosition(GeoPositionCallback(&aCallback),
GeoPositionErrorCallback(aErrorCallback),
Move(CreatePositionOptionsCopy(aOptions)),
aCallerType,
&ret);
if (NS_FAILED(rv)) {
aRv.Throw(rv);
}
return ret;
}
NS_IMETHODIMP
Geolocation::WatchPosition(nsIDOMGeoPositionCallback *aCallback,
nsIDOMGeoPositionErrorCallback *aErrorCallback,
UniquePtr<PositionOptions>&& aOptions,
int32_t* aRv)
{
NS_ENSURE_ARG_POINTER(aCallback);
return WatchPosition(GeoPositionCallback(aCallback),
GeoPositionErrorCallback(aErrorCallback),
Move(aOptions), CallerType::System,
aRv);
}
nsresult
Geolocation::WatchPosition(GeoPositionCallback aCallback,
GeoPositionErrorCallback aErrorCallback,
UniquePtr<PositionOptions>&& aOptions,
CallerType aCallerType,
int32_t* aRv)
{
if (mWatchingCallbacks.Length() > MAX_GEO_REQUESTS_PER_WINDOW) {
return NS_ERROR_NOT_AVAILABLE;
}
// Count the number of requests per protocol/scheme.
Telemetry::Accumulate(Telemetry::GEOLOCATION_WATCHPOSITION_SECURE_ORIGIN,
static_cast<uint8_t>(mProtocolType));
// The watch ID:
*aRv = mLastWatchId++;
nsIEventTarget* target = MainThreadTarget(this);
RefPtr<nsGeolocationRequest> request =
new nsGeolocationRequest(this, Move(aCallback), Move(aErrorCallback),
Move(aOptions),
static_cast<uint8_t>(mProtocolType), target, true,
EventStateManager::IsHandlingUserInput(), *aRv);
if (!sGeoEnabled || ShouldBlockInsecureRequests() ||
nsContentUtils::ResistFingerprinting(aCallerType)) {
nsCOMPtr<nsIRunnable> ev = new RequestAllowEvent(false, request);
target->Dispatch(ev.forget());
return NS_OK;
}
if (!mOwner && aCallerType != CallerType::System) {
return NS_ERROR_FAILURE;
}
if (mOwner) {
if (!RegisterRequestWithPrompt(request))
return NS_ERROR_NOT_AVAILABLE;
return NS_OK;
}
if (aCallerType != CallerType::System) {
return NS_ERROR_FAILURE;
}
request->Allow(JS::UndefinedHandleValue);
return NS_OK;
}
NS_IMETHODIMP
Geolocation::ClearWatch(int32_t aWatchId)
{
if (aWatchId < 0) {
return NS_OK;
}
if (!mClearedWatchIDs.Contains(aWatchId)) {
mClearedWatchIDs.AppendElement(aWatchId);
}
for (uint32_t i = 0, length = mWatchingCallbacks.Length(); i < length; ++i) {
if (mWatchingCallbacks[i]->WatchId() == aWatchId) {
mWatchingCallbacks[i]->Shutdown();
RemoveRequest(mWatchingCallbacks[i]);
mClearedWatchIDs.RemoveElement(aWatchId);
break;
}
}
// make sure we also search through the pending requests lists for
// watches to clear...
for (uint32_t i = 0, length = mPendingRequests.Length(); i < length; ++i) {
if (mPendingRequests[i]->IsWatch() &&
(mPendingRequests[i]->WatchId() == aWatchId)) {
mPendingRequests[i]->Shutdown();
mPendingRequests.RemoveElementAt(i);
break;
}
}
return NS_OK;
}
bool
Geolocation::WindowOwnerStillExists()
{
// an owner was never set when Geolocation
// was created, which means that this object
// is being used without a window.
if (mOwner == nullptr) {
return true;
}
nsCOMPtr<nsPIDOMWindowInner> window = do_QueryReferent(mOwner);
if (window) {
nsPIDOMWindowOuter* outer = window->GetOuterWindow();
if (!outer || outer->GetCurrentInnerWindow() != window ||
outer->Closed()) {
return false;
}
}
return true;
}
void
Geolocation::NotifyAllowedRequest(nsGeolocationRequest* aRequest)
{
if (aRequest->IsWatch()) {
mWatchingCallbacks.AppendElement(aRequest);
} else {
mPendingCallbacks.AppendElement(aRequest);
}
}
bool
Geolocation::RegisterRequestWithPrompt(nsGeolocationRequest* request)
{
nsIEventTarget* target = MainThreadTarget(this);
if (Preferences::GetBool("geo.prompt.testing", false)) {
bool allow = Preferences::GetBool("geo.prompt.testing.allow", false);
nsCOMPtr<nsIRunnable> ev = new RequestAllowEvent(allow, request);
target->Dispatch(ev.forget());
return true;
}
nsCOMPtr<nsIRunnable> ev = new RequestPromptEvent(request, mOwner);
target->Dispatch(ev.forget());
return true;
}
JSObject*
Geolocation::WrapObject(JSContext *aCtx, JS::Handle<JSObject*> aGivenProto)
{
return GeolocationBinding::Wrap(aCtx, this, aGivenProto);
}
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