mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-05 08:35:26 +00:00
459 lines
12 KiB
C++
459 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsXULAppAPI.h"
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#include "mozilla/dom/ContentChild.h"
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#include "mozilla/Telemetry.h"
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#include "nsISettingsService.h"
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#include "nsGeolocation.h"
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#include "nsGeolocationSettings.h"
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#include "nsDOMClassInfoID.h"
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#include "nsComponentManagerUtils.h"
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#include "nsServiceManagerUtils.h"
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#include "nsContentUtils.h"
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#include "nsContentPermissionHelper.h"
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#include "nsIDocument.h"
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#include "nsIObserverService.h"
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#include "nsPIDOMWindow.h"
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#include "nsThreadUtils.h"
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#include "mozilla/Services.h"
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#include "mozilla/unused.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/ClearOnShutdown.h"
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#include "mozilla/dom/PermissionMessageUtils.h"
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#include "mozilla/dom/SettingChangeNotificationBinding.h"
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#include "nsJSUtils.h"
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#include "prdtoa.h"
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#define GEO_ALA_TYPE_VALUE_PRECISE "precise"
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#define GEO_ALA_TYPE_VALUE_APPROX "blur"
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#define GEO_ALA_TYPE_VALUE_FIXED "user-defined"
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#define GEO_ALA_TYPE_VALUE_NONE "no-location"
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using mozilla::unused;
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using namespace mozilla;
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using namespace mozilla::dom;
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NS_IMPL_ISUPPORTS(nsGeolocationSettings, nsIObserver)
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StaticRefPtr<nsGeolocationSettings> nsGeolocationSettings::sSettings;
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already_AddRefed<nsGeolocationSettings>
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nsGeolocationSettings::GetGeolocationSettings()
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{
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// this singleton is only needed in the parent process...
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if (XRE_GetProcessType() == GeckoProcessType_Content) {
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return nullptr;
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}
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nsRefPtr<nsGeolocationSettings> result;
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if (nsGeolocationSettings::sSettings) {
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result = nsGeolocationSettings::sSettings;
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return result.forget();
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}
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result = new nsGeolocationSettings();
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if (NS_FAILED(result->Init())) {
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return nullptr;
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}
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ClearOnShutdown(&nsGeolocationSettings::sSettings);
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nsGeolocationSettings::sSettings = result;
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return result.forget();
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}
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nsresult nsGeolocationSettings::Init()
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{
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// query for the current settings...
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nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
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if (!obs) {
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return NS_ERROR_FAILURE;
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}
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// hook up observers
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obs->AddObserver(this, "quit-application", false);
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obs->AddObserver(this, "mozsettings-changed", false);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsGeolocationSettings::Observe(nsISupports* aSubject,
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const char* aTopic,
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const char16_t* aData)
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{
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// remove observers
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if (!strcmp("quit-application", aTopic)) {
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nsCOMPtr<nsIObserverService> obs = services::GetObserverService();
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if (obs) {
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obs->RemoveObserver(this, "quit-application");
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obs->RemoveObserver(this, "mozsettings-changed");
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}
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return NS_OK;
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}
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if (!strcmp("mozsettings-changed", aTopic)) {
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HandleMozsettingsChanged(aSubject);
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return NS_OK;
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}
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return NS_ERROR_FAILURE;
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}
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GeolocationSetting
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nsGeolocationSettings::LookupGeolocationSetting(int32_t aWatchID)
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{
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nsCString *origin;
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if (!mCurrentWatches.Get(aWatchID, &origin) || !origin) {
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return mGlobalSetting;
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}
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// if there is no per-app setting for the given origin, this will
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// set gb == nullptr
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GeolocationSetting const * const gb =
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mPerOriginSettings.Get(NS_ConvertUTF8toUTF16(*origin));
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// return a copy of the per-app or global settings
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return gb ? *gb : mGlobalSetting;
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}
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void
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nsGeolocationSettings::HandleGeolocationSettingsChange(const nsAString& aKey,
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const JS::Value& aVal)
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{
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if (aKey.EqualsASCII(GEO_ALA_ENABLED)) {
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HandleGeolocationAlaEnabledChange(aVal);
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} else if (aKey.EqualsASCII(GEO_ALA_TYPE)) {
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mGlobalSetting.HandleTypeChange(aVal);
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#ifdef MOZ_APPROX_LOCATION
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} else if (aKey.EqualsASCII(GEO_ALA_APPROX_DISTANCE)) {
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mGlobalSetting.HandleApproxDistanceChange(aVal);
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#endif
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} else if (aKey.EqualsASCII(GEO_ALA_FIXED_COORDS)) {
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mGlobalSetting.HandleFixedCoordsChange(aVal);
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} else if (aKey.EqualsASCII(GEO_ALA_APP_SETTINGS)) {
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HandleGeolocationPerOriginSettingsChange(aVal);
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} else if (aKey.EqualsASCII(GEO_ALA_ALWAYS_PRECISE)) {
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HandleGeolocationAlwaysPreciseChange(aVal);
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}
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}
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void
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nsGeolocationSettings::HandleMozsettingsChanged(nsISupports* aSubject)
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{
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MOZ_ASSERT(NS_IsMainThread());
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RootedDictionary<SettingChangeNotification> setting(nsContentUtils::RootingCx());
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if (!WrappedJSToDictionary(aSubject, setting)) {
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return;
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}
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GPSLOG("mozsettings changed: %s", NS_ConvertUTF16toUTF8(setting.mKey).get());
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// and handle the geolocation settings change...
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HandleGeolocationSettingsChange(setting.mKey, setting.mValue);
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}
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void
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nsGeolocationSettings::HandleGeolocationSettingsError(const nsAString& aName)
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{
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if (aName.EqualsASCII(GEO_ALA_ENABLED)) {
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GPSLOG("Unable to get value for '" GEO_ALA_ENABLED "'");
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} else if (aName.EqualsASCII(GEO_ALA_TYPE)) {
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GPSLOG("Unable to get value for '" GEO_ALA_TYPE "'");
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#ifdef MOZ_APPROX_LOCATION
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} else if (aName.EqualsASCII(GEO_ALA_APPROX_DISTANCE)) {
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GPSLOG("Unable to get value for '" GEO_ALA_APPROX_DISTANCE "'");
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#endif
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} else if (aName.EqualsASCII(GEO_ALA_FIXED_COORDS)) {
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GPSLOG("Unable to get value for '" GEO_ALA_FIXED_COORDS "'");
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} else if (aName.EqualsASCII(GEO_ALA_APP_SETTINGS)) {
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GPSLOG("Unable to get value for '" GEO_ALA_APP_SETTINGS "'");
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} else if (aName.EqualsASCII(GEO_ALA_ALWAYS_PRECISE)) {
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GPSLOG("Unable to get value for '" GEO_ALA_ALWAYS_PRECISE "'");
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}
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}
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void
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nsGeolocationSettings::PutWatchOrigin(int32_t aWatchID,
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const nsCString& aOrigin)
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{
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if (aWatchID < 0) {
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return;
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}
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GPSLOG("mapping watch ID %d to origin %s", aWatchID, aOrigin.get());
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mCurrentWatches.Put(static_cast<uint32_t>(aWatchID), new nsCString(aOrigin));
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}
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void
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nsGeolocationSettings::RemoveWatchOrigin(int32_t aWatchID)
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{
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GPSLOG("unmapping watch ID %d", aWatchID);
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mCurrentWatches.Remove(static_cast<uint32_t>(aWatchID));
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}
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void
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nsGeolocationSettings::GetWatchOrigin(int32_t aWatchID, nsCString& aOrigin)
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{
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nsCString *str;
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if (!mCurrentWatches.Get(aWatchID, &str) || !str) {
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return;
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}
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aOrigin = *str;
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GPSLOG("returning origin %s for watch ID %d", aOrigin.get(), aWatchID);
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}
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void
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nsGeolocationSettings::HandleGeolocationAlaEnabledChange(const JS::Value& aVal)
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{
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if (!aVal.isBoolean()) {
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return;
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}
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mAlaEnabled = aVal.toBoolean();
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}
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void
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nsGeolocationSettings::HandleGeolocationPerOriginSettingsChange(const JS::Value& aVal)
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{
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if (!aVal.isObject()) {
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return;
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}
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// clear the hash table
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mPerOriginSettings.Clear();
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// enumerate the array
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AutoJSAPI jsapi;
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jsapi.Init();
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JSContext* cx = jsapi.cx();
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JS::Rooted<JSObject*> obj(cx, &aVal.toObject());
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JS::AutoIdArray ids(cx, JS_Enumerate(cx, obj));
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// if we get no ids then the exception list is empty and we can return here.
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if (!ids)
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return;
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// go through all of the objects in the exceptions dictionary
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for (size_t i = 0; i < ids.length(); i++) {
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JS::RootedId id(cx);
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id = ids[i];
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JS::RootedValue v(cx);
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if (!JS_IdToValue(cx, id, &v) || !v.isString())
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continue;
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JS::RootedString str(cx, v.toString());
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if (!str)
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continue;
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// get the origin for the app
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nsString origin;
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if (!AssignJSString(cx, origin, str))
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continue;
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// if it is an app that is always precise, skip it
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if (mAlwaysPreciseApps.Contains(origin))
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continue;
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// get the app setting object
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JS::RootedValue propertyValue(cx);
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if (!JS_GetPropertyById(cx, obj, id, &propertyValue) || !propertyValue.isObject())
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continue;
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JS::RootedObject settingObj(cx, &propertyValue.toObject());
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GeolocationSetting *settings = new GeolocationSetting(origin);
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GPSLOG("adding exception for %s", NS_ConvertUTF16toUTF8(origin).get());
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// get the geolocation type
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JS::RootedValue fm(cx);
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if (JS_GetProperty(cx, settingObj, "type", &fm)) {
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settings->HandleTypeChange(fm);
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}
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#ifdef MOZ_APPROX_LOCATION
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// get the approximate distance if there is one
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JS::RootedValue distance(cx);
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if (JS_GetProperty(cx, settingObj, "distance", &distance)) {
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settings->HandleApproxDistanceChange(distance);
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}
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#endif
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// get and parse the coords, if any
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JS::RootedValue coords(cx);
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if (JS_GetProperty(cx, settingObj, "coords", &coords)) {
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settings->HandleFixedCoordsChange(coords);
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}
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// add the per-app setting object to the hashtable
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mPerOriginSettings.Put(origin, settings);
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}
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}
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void
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nsGeolocationSettings::HandleGeolocationAlwaysPreciseChange(const JS::Value& aVal)
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{
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if (!aVal.isObject()) {
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return;
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}
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// clear the list of apps that are always precise
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mAlwaysPreciseApps.Clear();
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AutoJSAPI jsapi;
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jsapi.Init();
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JSContext* cx = jsapi.cx();
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JS::Rooted<JSObject*> obj(cx, &aVal.toObject());
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if (!JS_IsArrayObject(cx, obj)) {
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return;
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}
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uint32_t length;
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if (!JS_GetArrayLength(cx, obj, &length)) {
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return;
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}
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// process the list of apps...
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for (uint32_t i = 0; i < length; ++i) {
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JS::RootedValue value(cx);
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if (!JS_GetElement(cx, obj, i, &value) || !value.isString()) {
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continue;
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}
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nsString origin;
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if (!AssignJSString(cx, origin, value.toString())) {
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continue;
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}
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GPSLOG("adding always precise for %s", NS_ConvertUTF16toUTF8(origin).get());
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// add the origin to the list of apps that will always receive
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// precise location information
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mAlwaysPreciseApps.AppendElement(origin);
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}
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}
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void
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GeolocationSetting::HandleTypeChange(const JS::Value& aVal)
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{
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AutoJSAPI jsapi;
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jsapi.Init();
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JSContext* cx = jsapi.cx();
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nsString str;
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if (!aVal.isString() || !AssignJSString(cx, str, aVal.toString())) {
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return;
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}
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GeolocationFuzzMethod fm = GEO_ALA_TYPE_DEFAULT;
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if (str.EqualsASCII(GEO_ALA_TYPE_VALUE_PRECISE)) {
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fm = GEO_ALA_TYPE_PRECISE;
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} else if (str.EqualsASCII(GEO_ALA_TYPE_VALUE_APPROX)) {
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#ifdef MOZ_APPROX_LOCATION
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fm = GEO_ALA_TYPE_APPROX;
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#else
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// we are loading a profile from a build with MOZ_APPROX_LOCATION
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// enabled, then we need to force the type to a sane value
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fm = GEO_ALA_TYPE_NONE;
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#endif
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} else if (str.EqualsASCII(GEO_ALA_TYPE_VALUE_FIXED)) {
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fm = GEO_ALA_TYPE_FIXED;
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} else if (str.EqualsASCII(GEO_ALA_TYPE_VALUE_NONE)) {
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fm = GEO_ALA_TYPE_NONE;
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}
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if ((fm >= GEO_ALA_TYPE_FIRST) && (fm <= GEO_ALA_TYPE_LAST)) {
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GPSLOG("changing type for %s to %s (%d)",
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(mOrigin.IsEmpty() ? "global" : NS_ConvertUTF16toUTF8(mOrigin).get()),
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NS_ConvertUTF16toUTF8(str).get(),
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static_cast<int>(fm));
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mFuzzMethod = fm;
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}
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// based on the new type, we need to clean up the other settings
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switch (mFuzzMethod) {
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case GEO_ALA_TYPE_PRECISE:
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case GEO_ALA_TYPE_NONE:
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#ifdef MOZ_APPROX_LOCATION
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mDistance = 0;
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#endif
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mLatitude = 0.0;
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mLongitude = 0.0;
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break;
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#ifdef MOZ_APPROX_LOCATION
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case GEO_ALA_TYPE_APPROX:
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mLatitude = 0.0;
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mLongitude = 0.0;
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break;
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#endif
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case GEO_ALA_TYPE_FIXED:
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#ifdef MOZ_APPROX_LOCATION
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mDistance = 0;
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#endif
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break;
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}
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}
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#ifdef MOZ_APPROX_LOCATION
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void
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GeolocationSetting::HandleApproxDistanceChange(const JS::Value& aVal)
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{
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if (!aVal.isInt32()) {
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return;
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}
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GPSLOG("changing approx distance for %s to %d",
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(mOrigin.IsEmpty() ? "global" : NS_ConvertUTF16toUTF8(mOrigin).get()),
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aVal.toInt32());
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// set the approximate distance
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mDistance = aVal.toInt32();
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}
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#endif
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void
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GeolocationSetting::HandleFixedCoordsChange(const JS::Value& aVal)
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{
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AutoJSAPI jsapi;
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jsapi.Init();
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JSContext* cx = jsapi.cx();
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nsString str;
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if (!aVal.isString() || !AssignJSString(cx, str, aVal.toString()) || str.IsEmpty()) {
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return;
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}
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// parse the string and store the global lat/lon
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// the @ character is present in the GPS coord strings we receive
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int32_t const comma = str.Find(",");
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if ( (str.CharAt(0) != '@') || (comma == -1) ) {
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return;
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}
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nsresult rv;
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nsString slat(Substring(str, 1, comma));
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nsString slon(Substring(str, comma + 1));
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double lat = slat.ToDouble(&rv);
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NS_ENSURE_SUCCESS(rv,);
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double lon = slon.ToDouble(&rv);
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NS_ENSURE_SUCCESS(rv,);
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mLatitude = lat;
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mLongitude = lon;
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GPSLOG("changing coords for %s to %s (%f, %f)",
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(mOrigin.IsEmpty() ? "global" : NS_ConvertUTF16toUTF8(mOrigin).get()),
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NS_ConvertUTF16toUTF8(str).get(),
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mLatitude, mLongitude);
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}
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