Add background location throttling whitelist support. (2f1f7e8d) · Commits · e / os / android_frameworks_base

core/java/android/provider/Settings.java

+7 −0

Original line number	Diff line number	Diff line
		@@ -7608,6 +7608,13 @@ public final class Settings {
		public static final String LOCATION_BACKGROUND_THROTTLE_INTERVAL_MS =
		"location_background_throttle_interval_ms";

		/**
		* Packages that are whitelisted for background throttling (throttling will not be applied).
		* @hide
		*/
		public static final String LOCATION_BACKGROUND_THROTTLE_PACKAGE_WHITELIST =
		"location_background_throttle_package_whitelist";

		/**
		* Whether TV will switch to MHL port when a mobile device is plugged in.
		* (0 = false, 1 = true)

services/core/java/com/android/server/LocationManagerService.java

+50 −18

Original line number	Diff line number	Diff line
		@@ -132,6 +132,8 @@ public class LocationManagerService extends ILocationManager.Stub {
		private static final String FUSED_LOCATION_SERVICE_ACTION =
		"com.android.location.service.FusedLocationProvider";

		private static final String GMSCORE_PACKAGE = "com.android.google.gms";

		private static final int MSG_LOCATION_CHANGED = 1;

		private static final long NANOS_PER_MILLI = 1000000L;
		@@ -140,7 +142,7 @@ public class LocationManagerService extends ILocationManager.Stub {
		private static final long HIGH_POWER_INTERVAL_MS = 5 * 60 * 1000;

		// default background throttling interval if not overriden in settings
		private static final long DEFAULT_BACKGROUND_THROTTLE_INTERVAL_MS = 30 * 1000;
		private static final long DEFAULT_BACKGROUND_THROTTLE_INTERVAL_MS = 10 * 60 * 1000;

		// Location Providers may sometimes deliver location updates
		// slightly faster that requested - provide grace period so
		@@ -214,10 +216,13 @@ public class LocationManagerService extends ILocationManager.Stub {
		private final HashMap<String, Location> mLastLocationCoarseInterval =
		new HashMap<>();

		// all providers that operate over proxy, for authorizing incoming location
		// all providers that operate over proxy, for authorizing incoming location and whitelisting
		// throttling
		private final ArrayList<LocationProviderProxy> mProxyProviders =
		new ArrayList<>();

		private String[] mBackgroundThrottlePackageWhitelist = new String[]{};

		// current active user on the device - other users are denied location data
		private int mCurrentUserId = UserHandle.USER_SYSTEM;
		private int[] mCurrentUserProfiles = new int[] { UserHandle.USER_SYSTEM };
		@@ -359,6 +364,26 @@ public class LocationManagerService extends ILocationManager.Stub {
		}
		}
		}, UserHandle.USER_ALL);
		mContext.getContentResolver().registerContentObserver(
		Settings.Global.getUriFor(
		Settings.Global.LOCATION_BACKGROUND_THROTTLE_PACKAGE_WHITELIST),
		true,
		new ContentObserver(mLocationHandler) {
		@Override
		public void onChange(boolean selfChange) {
		synchronized (mLock) {
		String setting = Settings.Global.getString(
		mContext.getContentResolver(),
		Settings.Global.LOCATION_BACKGROUND_THROTTLE_PACKAGE_WHITELIST);
		if (setting == null) {
		setting = "";
		}

		mBackgroundThrottlePackageWhitelist = setting.split(",");
		updateProvidersLocked();
		}
		}
		}, UserHandle.USER_ALL);
		mPackageMonitor.register(mContext, mLocationHandler.getLooper(), true);

		// listen for user change
		@@ -1066,19 +1091,6 @@ public class LocationManagerService extends ILocationManager.Stub {
		mProvidersByName.remove(provider.getName());
		}

		private boolean isOverlayProviderPackageLocked(String packageName) {
		for (LocationProviderInterface provider : mProviders) {
		if (provider instanceof LocationProviderProxy) {
		if (packageName.equals(
		((LocationProviderProxy) provider).getConnectedPackageName())) {
		return true;
		}
		}
		}

		return false;
		}

		/**
		* Returns "true" if access to the specified location provider is allowed by the current
		* user's settings. Access to all location providers is forbidden to non-location-provider
		@@ -1542,8 +1554,28 @@ public class LocationManagerService extends ILocationManager.Stub {
		p.setRequest(providerRequest, worksource);
		}

		private boolean isThrottlingExemptLocked(Receiver recevier) {
		return isOverlayProviderPackageLocked(recevier.mPackageName);
		private boolean isThrottlingExemptLocked(Receiver receiver) {
		if (receiver.mUid == Process.SYSTEM_UID) {
		return true;
		}

		if (receiver.mPackageName.equals(GMSCORE_PACKAGE)) {
		return true;
		}

		for (LocationProviderProxy provider : mProxyProviders) {
		if (receiver.mPackageName.equals(provider.getConnectedPackageName())) {
		return true;
		}
		}

		for (String whitelistedPackage : mBackgroundThrottlePackageWhitelist) {
		if (receiver.mPackageName.equals(whitelistedPackage)) {
		return true;
		}
		}

		return false;
		}

		private class UpdateRecord {
		@@ -1766,7 +1798,7 @@ public class LocationManagerService extends ILocationManager.Stub {
		if (D) Log.d(TAG, "request " + Integer.toHexString(System.identityHashCode(receiver))
		+ " " + name + " " + request + " from " + packageName + "(" + uid + " "
		+ (record.mIsForegroundUid ? "foreground" : "background")
		+ (isOverlayProviderPackageLocked(receiver.mPackageName) ? " [whitelisted]" : "") + ")");
		+ (isThrottlingExemptLocked(receiver) ? " [whitelisted]" : "") + ")");

		UpdateRecord oldRecord = receiver.mUpdateRecords.put(name, record);
		if (oldRecord != null) {