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nsGeolocation.cpp
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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 "nsXULAppAPI.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/Telemetry.h"
#include "nsISettingsService.h"
#include "nsGeolocation.h"
#include "nsGeoGridFuzzer.h"
#include "nsGeolocationSettings.h"
#include "nsDOMClassInfoID.h"
#include "nsComponentManagerUtils.h"
#include "nsServiceManagerUtils.h"
#include "nsContentUtils.h"
#include "nsContentPermissionHelper.h"
#include "nsIDocument.h"
#include "nsIObserverService.h"
#include "nsPIDOMWindow.h"
#include "nsThreadUtils.h"
#include "mozilla/Services.h"
#include "mozilla/unused.h"
#include "mozilla/Preferences.h"
#include "mozilla/ClearOnShutdown.h"
#include "mozilla/dom/PermissionMessageUtils.h"
#include "mozilla/dom/SettingChangeNotificationBinding.h"
#include "nsJSUtils.h"
#include "prdtoa.h"
class nsIPrincipal;
#ifdef MOZ_ENABLE_QT5GEOPOSITION
#include "QTMLocationProvider.h"
#endif
#ifdef MOZ_WIDGET_ANDROID
#include "AndroidLocationProvider.h"
#endif
#ifdef MOZ_WIDGET_GONK
#include "GonkGPSGeolocationProvider.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
// the geolocation enabled setting
#define GEO_SETTINGS_ENABLED "geolocation.enabled"
using mozilla::unused; // <snicker>
using namespace mozilla;
using namespace mozilla::dom;
class nsGeolocationRequest final
: public nsIContentPermissionRequest
, public nsITimerCallback
, public nsIGeolocationUpdate
{
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_NSICONTENTPERMISSIONREQUEST
NS_DECL_NSITIMERCALLBACK
NS_DECL_NSIGEOLOCATIONUPDATE
NS_DECL_CYCLE_COLLECTION_CLASS_AMBIGUOUS(nsGeolocationRequest, nsIContentPermissionRequest)
nsGeolocationRequest(Geolocation* aLocator,
const GeoPositionCallback& aCallback,
const GeoPositionErrorCallback& aErrorCallback,
PositionOptions* aOptions,
bool aWatchPositionRequest = false,
int32_t aWatchId = 0);
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();
already_AddRefed<nsIDOMGeoPosition> AdjustedLocation(nsIDOMGeoPosition*);
bool mIsWatchPositionRequest;
nsCOMPtr<nsITimer> mTimeoutTimer;
GeoPositionCallback mCallback;
GeoPositionErrorCallback mErrorCallback;
nsAutoPtr<PositionOptions> mOptions;
RefPtr<Geolocation> mLocator;
int32_t mWatchId;
bool mShutdown;
nsCOMPtr<nsIContentPermissionRequester> mRequester;
};
static PositionOptions*
CreatePositionOptionsCopy(const PositionOptions& aOptions)
{
nsAutoPtr<PositionOptions> geoOptions(new PositionOptions());
geoOptions->mEnableHighAccuracy = aOptions.mEnableHighAccuracy;
geoOptions->mMaximumAge = aOptions.mMaximumAge;
geoOptions->mTimeout = aOptions.mTimeout;
return geoOptions.forget();
}
class GeolocationSettingsCallback : public nsISettingsServiceCallback
{
virtual ~GeolocationSettingsCallback() {
MOZ_COUNT_DTOR(GeolocationSettingsCallback);
}
public:
NS_DECL_ISUPPORTS
GeolocationSettingsCallback() {
MOZ_COUNT_CTOR(GeolocationSettingsCallback);
}
NS_IMETHOD Handle(const nsAString& aName, JS::Handle<JS::Value> aResult) override
{
MOZ_ASSERT(NS_IsMainThread());
if (aName.EqualsASCII(GEO_SETTINGS_ENABLED)) {
// The geolocation is enabled by default:
bool value = true;
if (aResult.isBoolean()) {
value = aResult.toBoolean();
}
GPSLOG("%s set to %s",
NS_ConvertUTF16toUTF8(aName).get(),
(value ? "ENABLED" : "DISABLED"));
MozSettingValue(value);
} else {
RefPtr<nsGeolocationSettings> gs = nsGeolocationSettings::GetGeolocationSettings();
if (gs) {
gs->HandleGeolocationSettingsChange(aName, aResult);
}
}
return NS_OK;
}
NS_IMETHOD HandleError(const nsAString& aName) override
{
if (aName.EqualsASCII(GEO_SETTINGS_ENABLED)) {
GPSLOG("Unable to get value for '" GEO_SETTINGS_ENABLED "'");
// Default it's enabled:
MozSettingValue(true);
} else {
RefPtr<nsGeolocationSettings> gs = nsGeolocationSettings::GetGeolocationSettings();
if (gs) {
gs->HandleGeolocationSettingsError(aName);
}
}
return NS_OK;
}
void MozSettingValue(const bool aValue)
{
RefPtr<nsGeolocationService> gs = nsGeolocationService::GetGeolocationService();
if (gs) {
gs->HandleMozsettingValue(aValue);
}
}
};
NS_IMPL_ISUPPORTS(GeolocationSettingsCallback, nsISettingsServiceCallback)
class RequestPromptEvent : public nsRunnable
{
public:
RequestPromptEvent(nsGeolocationRequest* aRequest, nsWeakPtr aWindow)
: mRequest(aRequest)
, mWindow(aWindow)
{
}
NS_IMETHOD Run()
{
nsCOMPtr<nsPIDOMWindow> window = do_QueryReferent(mWindow);
nsContentPermissionUtils::AskPermission(mRequest, window);
return NS_OK;
}
private:
RefPtr<nsGeolocationRequest> mRequest;
nsWeakPtr mWindow;
};
class RequestAllowEvent : public nsRunnable
{
public:
RequestAllowEvent(int allow, nsGeolocationRequest* request)
: mAllow(allow),
mRequest(request)
{
}
NS_IMETHOD Run() {
if (mAllow) {
mRequest->Allow(JS::UndefinedHandleValue);
} else {
mRequest->Cancel();
}
return NS_OK;
}
private:
bool mAllow;
RefPtr<nsGeolocationRequest> mRequest;
};
class RequestSendLocationEvent : public nsRunnable
{
public:
RequestSendLocationEvent(nsIDOMGeoPosition* aPosition,
nsGeolocationRequest* aRequest)
: mPosition(aPosition),
mRequest(aRequest)
{
}
NS_IMETHOD Run() {
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(){}
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) {
ErrorResult err;
callback->Call(*this, err);
}
} else {
nsIDOMGeoPositionErrorCallback* callback = aCallback.GetXPCOMCallback();
if (callback) {
callback->HandleEvent(this);
}
}
}
////////////////////////////////////////////////////
// nsGeolocationRequest
////////////////////////////////////////////////////
nsGeolocationRequest::nsGeolocationRequest(Geolocation* aLocator,
const GeoPositionCallback& aCallback,
const GeoPositionErrorCallback& aErrorCallback,
PositionOptions* aOptions,
bool aWatchPositionRequest,
int32_t aWatchId)
: mIsWatchPositionRequest(aWatchPositionRequest),
mCallback(aCallback),
mErrorCallback(aErrorCallback),
mOptions(aOptions),
mLocator(aLocator),
mWatchId(aWatchId),
mShutdown(false)
{
nsCOMPtr<nsIDOMWindow> win = do_QueryReferent(mLocator->GetOwner());
if (win) {
nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(win);
if (window) {
mRequester = new nsContentPermissionRequester(window);
}
}
}
nsGeolocationRequest::~nsGeolocationRequest()
{
}
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsGeolocationRequest)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIContentPermissionRequest)
NS_INTERFACE_MAP_ENTRY(nsIContentPermissionRequest)
NS_INTERFACE_MAP_ENTRY(nsITimerCallback)
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)
NS_IMETHODIMP
nsGeolocationRequest::Notify(nsITimer* aTimer)
{
StopTimeoutTimer();
NotifyErrorAndShutdown(nsIDOMGeoPositionError::TIMEOUT);
return NS_OK;
}
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(nsIDOMWindow * *aRequestingWindow)
{
NS_ENSURE_ARG_POINTER(aRequestingWindow);
nsCOMPtr<nsIDOMWindow> 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::Cancel()
{
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 (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);
} else {
// 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()
{
StopTimeoutTimer();
int32_t timeout;
if (mOptions && (timeout = mOptions->mTimeout) != 0) {
if (timeout < 0) {
timeout = 0;
} else if (timeout < 10) {
timeout = 10;
}
mTimeoutTimer = do_CreateInstance("@mozilla.org/timer;1");
mTimeoutTimer->InitWithCallback(this, timeout, nsITimer::TYPE_ONE_SHOT);
}
}
void
nsGeolocationRequest::StopTimeoutTimer()
{
if (mTimeoutTimer) {
mTimeoutTimer->Cancel();
mTimeoutTimer = nullptr;
}
}
static already_AddRefed<nsIDOMGeoPosition>
SynthesizeLocation(DOMTimeStamp aTimestamp, double aLatitude, double aLongitude)
{
// return a position at sea level, N heading, 0 speed, 0 error.
RefPtr<nsGeoPosition> pos = new nsGeoPosition(aLatitude, aLongitude,
0.0, 0.0, 0.0, 0.0, 0.0,
aTimestamp);
return pos.forget();
}
already_AddRefed<nsIDOMGeoPosition>
nsGeolocationRequest::AdjustedLocation(nsIDOMGeoPosition *aPosition)
{
nsCOMPtr<nsIDOMGeoPosition> pos = aPosition;
if (XRE_IsContentProcess()) {
GPSLOG("child process just copying position");
return pos.forget();
}
// get the settings cache
RefPtr<nsGeolocationSettings> gs = nsGeolocationSettings::GetGeolocationSettings();
if (!gs) {
return pos.forget();
}
// make sure ALA is enabled
if (!gs->IsAlaEnabled()) {
GPSLOG("ALA is disabled, returning precise location");
return pos.forget();
}
// look up the geolocation settings via the watch ID
DOMTimeStamp ts(PR_Now() / PR_USEC_PER_MSEC);
GeolocationSetting setting = gs->LookupGeolocationSetting(mWatchId);
switch (setting.GetType()) {
case GEO_ALA_TYPE_PRECISE:
GPSLOG("returning precise location watch ID: %d", mWatchId);
return pos.forget();
#ifdef MOZ_APPROX_LOCATION
case GEO_ALA_TYPE_APPROX:
GPSLOG("returning approximate location for watch ID: %d", mWatchId);
return nsGeoGridFuzzer::FuzzLocation(setting, aPosition);
#endif
case GEO_ALA_TYPE_FIXED:
GPSLOG("returning fixed location for watch ID:: %d", mWatchId);
// use "now" as time stamp
return SynthesizeLocation(ts, setting.GetFixedLatitude(),
setting.GetFixedLongitude());
case GEO_ALA_TYPE_NONE:
GPSLOG("returning no location for watch ID: %d", mWatchId);
// return nullptr so no location callback happens
return nullptr;
}
return 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<Position> wrapped;
if (aPosition) {
nsCOMPtr<nsIDOMGeoPositionCoords> coords;
aPosition->GetCoords(getter_AddRefs(coords));
if (coords) {
#ifdef MOZ_GPS_DEBUG
double lat = 0.0, lon = 0.0;
coords->GetLatitude(&lat);
coords->GetLongitude(&lon);
GPSLOG("returning coordinates: %f, %f", lat, lon);
#endif
wrapped = new 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()) {
ErrorResult err;
PositionCallback* callback = mCallback.GetWebIDLCallback();
MOZ_ASSERT(callback);
callback->Call(*wrapped, err);
} else {
nsIDOMGeoPositionCallback* callback = mCallback.GetXPCOMCallback();
MOZ_ASSERT(callback);
callback->HandleEvent(aPosition);
}
StopTimeoutTimer();
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<nsIDOMGeoPosition> pos = AdjustedLocation(aPosition);
nsCOMPtr<nsIRunnable> ev = new RequestSendLocationEvent(pos, this);
NS_DispatchToMainThread(ev);
return NS_OK;
}
NS_IMETHODIMP
nsGeolocationRequest::LocationUpdatePending()
{
if (!mTimeoutTimer) {
SetTimeoutTimer();
}
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;
if (mTimeoutTimer) {
mTimeoutTimer->Cancel();
mTimeoutTimer = nullptr;
}
// 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();
}
}
}
////////////////////////////////////////////////////
// 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 bool sGeoInitPending = 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()) {
sGeoInitPending = false;
return NS_OK;
}
// check if the geolocation service is enable from settings
nsCOMPtr<nsISettingsService> settings =
do_GetService("@mozilla.org/settingsService;1");
if (settings) {
nsCOMPtr<nsISettingsServiceLock> settingsLock;
nsresult rv = settings->CreateLock(nullptr, getter_AddRefs(settingsLock));
NS_ENSURE_SUCCESS(rv, rv);
RefPtr<GeolocationSettingsCallback> callback = new GeolocationSettingsCallback();
rv = settingsLock->Get(GEO_SETTINGS_ENABLED, callback);
NS_ENSURE_SUCCESS(rv, rv);
// look up the geolocation settings
callback = new GeolocationSettingsCallback();
rv = settingsLock->Get(GEO_ALA_ENABLED, callback);
NS_ENSURE_SUCCESS(rv, rv);
callback = new GeolocationSettingsCallback();
rv = settingsLock->Get(GEO_ALA_TYPE, callback);
NS_ENSURE_SUCCESS(rv, rv);
#ifdef MOZ_APPROX_LOCATION
callback = new GeolocationSettingsCallback();
rv = settingsLock->Get(GEO_ALA_APPROX_DISTANCE, callback);
NS_ENSURE_SUCCESS(rv, rv);
#endif
callback = new GeolocationSettingsCallback();
rv = settingsLock->Get(GEO_ALA_FIXED_COORDS, callback);
NS_ENSURE_SUCCESS(rv, rv);
callback = new GeolocationSettingsCallback();
rv = settingsLock->Get(GEO_ALA_APP_SETTINGS, callback);
NS_ENSURE_SUCCESS(rv, rv);
callback = new GeolocationSettingsCallback();
rv = settingsLock->Get(GEO_ALA_ALWAYS_PRECISE, callback);
NS_ENSURE_SUCCESS(rv, rv);
} else {
// If we cannot obtain the settings service, we continue
// assuming that the geolocation is enabled:
sGeoInitPending = false;
}
// geolocation service can be enabled -> now register observer
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
if (!obs) {
return NS_ERROR_FAILURE;
}
obs->AddObserver(this, "quit-application", false);
obs->AddObserver(this, "mozsettings-changed", false);
#ifdef MOZ_ENABLE_QT5GEOPOSITION
mProvider = new QTMLocationProvider();
#endif
#ifdef MOZ_WIDGET_ANDROID
mProvider = new AndroidLocationProvider();
#endif
#ifdef MOZ_WIDGET_GONK
// GonkGPSGeolocationProvider can be started at boot up time for initialization reasons.
// do_getService gets hold of the already initialized component and starts
// processing location requests immediately.
// do_Createinstance will create multiple instances of the provider which is not right.
// bug 993041
mProvider = do_GetService(GONK_GPS_GEOLOCATION_PROVIDER_CONTRACTID);
#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> override =
do_GetService(NS_GEOLOCATION_PROVIDER_CONTRACTID);
if (override) {
mProvider = override;
}
}
return NS_OK;
}
nsGeolocationService::~nsGeolocationService()
{
}
void
nsGeolocationService::HandleMozsettingChanged(nsISupports* aSubject)
{
// The string that we're interested in will be a JSON string that looks like:
// {"key":"gelocation.enabled","value":true}
RootedDictionary<SettingChangeNotification> setting(nsContentUtils::RootingCxForThread());
if (!WrappedJSToDictionary(aSubject, setting)) {
return;
}
if (!setting.mKey.EqualsASCII(GEO_SETTINGS_ENABLED)) {
return;
}
if (!setting.mValue.isBoolean()) {
return;
}
GPSLOG("mozsetting changed: %s == %s",
NS_ConvertUTF16toUTF8(setting.mKey).get(),
(setting.mValue.toBoolean() ? "TRUE" : "FALSE"));
HandleMozsettingValue(setting.mValue.toBoolean());
}
void
nsGeolocationService::HandleMozsettingValue(const bool aValue)
{
if (!aValue) {
// turn things off
StopDevice();
Update(nullptr);
mLastPosition.position = nullptr;
sGeoEnabled = false;
} else {
sGeoEnabled = true;
}
if (sGeoInitPending) {
sGeoInitPending = false;
for (uint32_t i = 0, length = mGeolocators.Length(); i < length; ++i) {
mGeolocators[i]->ServiceReady();
}
}
}
NS_IMETHODIMP
nsGeolocationService::Observe(nsISupports* aSubject,
const char* aTopic,
const char16_t* aData)
{
if (!strcmp("quit-application", aTopic)) {
nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
if (obs) {
obs->RemoveObserver(this, "quit-application");
obs->RemoveObserver(this, "mozsettings-changed");
}
for (uint32_t i = 0; i< mGeolocators.Length(); i++) {
mGeolocators[i]->Shutdown();
}
StopDevice();
return NS_OK;
}
if (!strcmp("mozsettings-changed", aTopic)) {
HandleMozsettingChanged(aSubject);
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::LocationUpdatePending()
{
for (uint32_t i = 0; i< mGeolocators.Length(); i++) {
mGeolocators[i]->LocationUpdatePending();
}
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()
{