Merge "Handle exact alarm permission state changes" into sc-dev am: cd140900ed (a3bbe5e6) · Commits · e / os / android_frameworks_base

apex/jobscheduler/service/java/com/android/server/alarm/AlarmManagerService.java

+236 −49

Original line number	Diff line number	Diff line
		@@ -136,6 +136,8 @@ import com.android.server.JobSchedulerBackgroundThread;
		import com.android.server.LocalServices;
		import com.android.server.SystemService;
		import com.android.server.SystemServiceManager;
		import com.android.server.pm.parsing.pkg.AndroidPackage;
		import com.android.server.pm.permission.PermissionManagerService;
		import com.android.server.pm.permission.PermissionManagerServiceInternal;
		import com.android.server.usage.AppStandbyInternal;
		import com.android.server.usage.AppStandbyInternal.AppIdleStateChangeListener;
		@@ -215,9 +217,18 @@ public class AlarmManagerService extends SystemService {

		final Object mLock = new Object();

		/** Immutable set of app ids that have requested SCHEDULE_EXACT_ALARM permission.*/
		/** Immutable set of app ids requesting {@link Manifest.permission#SCHEDULE_EXACT_ALARM} */
		@VisibleForTesting
		volatile Set<Integer> mExactAlarmCandidates = Collections.emptySet();

		/**
		* A map from uid to the last op-mode we have seen for
		* {@link AppOpsManager#OP_SCHEDULE_EXACT_ALARM}
		*/
		@VisibleForTesting
		@GuardedBy("mLock")
		SparseIntArray mLastOpScheduleExactAlarm = new SparseIntArray();

		// List of alarms per uid deferred due to user applied background restrictions on the source app
		SparseArray<ArrayList<Alarm>> mPendingBackgroundAlarms = new SparseArray<>();
		private long mNextWakeup;
		@@ -522,6 +533,9 @@ public class AlarmManagerService extends SystemService {
		static final String KEY_MIN_DEVICE_IDLE_FUZZ = "min_device_idle_fuzz";
		@VisibleForTesting
		static final String KEY_MAX_DEVICE_IDLE_FUZZ = "max_device_idle_fuzz";
		@VisibleForTesting
		static final String KEY_KILL_ON_SCHEDULE_EXACT_ALARM_REVOKED =
		"kill_on_schedule_exact_alarm_revoked";

		private static final long DEFAULT_MIN_FUTURITY = 5 * 1000;
		private static final long DEFAULT_MIN_INTERVAL = 60 * 1000;
		@@ -564,6 +578,8 @@ public class AlarmManagerService extends SystemService {
		private static final long DEFAULT_MIN_DEVICE_IDLE_FUZZ = 2 * 60_000;
		private static final long DEFAULT_MAX_DEVICE_IDLE_FUZZ = 15 * 60_000;

		private static final boolean DEFAULT_KILL_ON_SCHEDULE_EXACT_ALARM_REVOKED = true;

		// Minimum futurity of a new alarm
		public long MIN_FUTURITY = DEFAULT_MIN_FUTURITY;

		@@ -644,6 +660,13 @@ public class AlarmManagerService extends SystemService {
		*/
		public long MAX_DEVICE_IDLE_FUZZ = DEFAULT_MAX_DEVICE_IDLE_FUZZ;

		/**
		* Whether or not to kill app when the permission
		* {@link Manifest.permission#SCHEDULE_EXACT_ALARM} is revoked.
		*/
		public boolean KILL_ON_SCHEDULE_EXACT_ALARM_REVOKED =
		DEFAULT_KILL_ON_SCHEDULE_EXACT_ALARM_REVOKED;

		private long mLastAllowWhileIdleWhitelistDuration = -1;
		private int mVersion = 0;

		@@ -816,6 +839,11 @@ public class AlarmManagerService extends SystemService {
		deviceIdleFuzzBoundariesUpdated = true;
		}
		break;
		case KEY_KILL_ON_SCHEDULE_EXACT_ALARM_REVOKED:
		KILL_ON_SCHEDULE_EXACT_ALARM_REVOKED = properties.getBoolean(
		KEY_KILL_ON_SCHEDULE_EXACT_ALARM_REVOKED,
		DEFAULT_KILL_ON_SCHEDULE_EXACT_ALARM_REVOKED);
		break;
		default:
		if (name.startsWith(KEY_PREFIX_STANDBY_QUOTA) && !standbyQuotaUpdated) {
		// The quotas need to be updated in order, so we can't just rely
		@@ -830,17 +858,24 @@ public class AlarmManagerService extends SystemService {
		}

		private void updateExactAlarmDenyList(String[] newDenyList) {
		final Set<String> newSet = Collections.unmodifiableSet(new ArraySet<>(newDenyList));
		final Set<String> removed = new ArraySet<>(EXACT_ALARM_DENY_LIST);
		final Set<String> added = new ArraySet<>(newDenyList);

		added.removeAll(EXACT_ALARM_DENY_LIST);
		removed.removeAll(newSet);
		if (added.size() > 0) {
		mHandler.obtainMessage(AlarmHandler.EXACT_ALARM_DENY_LIST_PACKAGES_ADDED, added)
		.sendToTarget();
		}
		if (removed.size() > 0) {
		mHandler.obtainMessage(AlarmHandler.EXACT_ALARM_DENY_LIST_PACKAGES_REMOVED, removed)
		.sendToTarget();
		}
		if (newDenyList.length == 0) {
		EXACT_ALARM_DENY_LIST = Collections.emptySet();
		} else {
		final Set<String> oldSet = EXACT_ALARM_DENY_LIST;
		final Set<String> newlyAdded = new ArraySet<>(newDenyList);
		EXACT_ALARM_DENY_LIST = Collections.unmodifiableSet(new ArraySet<>(newlyAdded));
		newlyAdded.removeAll(oldSet);
		if (newlyAdded.size() > 0) {
		mHandler.obtainMessage(AlarmHandler.EXACT_ALARM_DENY_LIST_CHANGED, newlyAdded)
		.sendToTarget();
		}
		EXACT_ALARM_DENY_LIST = newSet;
		}
		}

		@@ -1007,6 +1042,20 @@ public class AlarmManagerService extends SystemService {
		pw.print(KEY_EXACT_ALARM_DENY_LIST, EXACT_ALARM_DENY_LIST);
		pw.println();

		pw.print(KEY_MIN_DEVICE_IDLE_FUZZ);
		pw.print("=");
		TimeUtils.formatDuration(MIN_DEVICE_IDLE_FUZZ, pw);
		pw.println();

		pw.print(KEY_MAX_DEVICE_IDLE_FUZZ);
		pw.print("=");
		TimeUtils.formatDuration(MAX_DEVICE_IDLE_FUZZ, pw);
		pw.println();

		pw.print(KEY_KILL_ON_SCHEDULE_EXACT_ALARM_REVOKED,
		KILL_ON_SCHEDULE_EXACT_ALARM_REVOKED);
		pw.println();

		pw.decreaseIndent();
		}

		@@ -1667,16 +1716,57 @@ public class AlarmManagerService extends SystemService {
		void refreshExactAlarmCandidates() {
		final String[] candidates = mLocalPermissionManager.getAppOpPermissionPackages(
		Manifest.permission.SCHEDULE_EXACT_ALARM);
		final Set<Integer> appIds = new ArraySet<>(candidates.length);
		final Set<Integer> newAppIds = new ArraySet<>(candidates.length);
		for (final String candidate : candidates) {
		final int uid = mPackageManagerInternal.getPackageUid(candidate,
		PackageManager.MATCH_ANY_USER, USER_SYSTEM);
		if (uid > 0) {
		appIds.add(UserHandle.getAppId(uid));
		newAppIds.add(UserHandle.getAppId(uid));
		}
		}
		final ArraySet<Integer> removed = new ArraySet<>(mExactAlarmCandidates);
		removed.removeAll(newAppIds);
		// This code is only called on package_added and boot. The set {removed} is only expected to
		// be non-empty when a package was updated and it removed the permission from its manifest.
		for (int i = 0; i < removed.size(); i++) {
		final int removedAppId = removed.valueAt(i);
		synchronized (mLock) {
		Slog.i(TAG, "App id " + removedAppId + " lost SCHEDULE_EXACT_ALARM on update");

		final Predicate<Alarm> whichAlarms = a -> {
		if (UserHandle.getAppId(a.uid) != removedAppId \|\| a.windowLength != 0) {
		return false;
		}
		if (!isExactAlarmChangeEnabled(a.packageName, UserHandle.getUserId(a.uid))) {
		return false;
		}
		return a.alarmClock != null \|\| !isExemptFromExactAlarmPermission(a.uid);
		};
		removeAlarmsInternalLocked(whichAlarms, REMOVE_REASON_EXACT_PERMISSION_REVOKED);
		}
		}
		// No need to lock. Assignment is always atomic.
		mExactAlarmCandidates = Collections.unmodifiableSet(appIds);
		mExactAlarmCandidates = Collections.unmodifiableSet(newAppIds);
		}

		@Override
		public void onUserStarting(TargetUser user) {
		super.onUserStarting(user);
		final int userId = user.getUserIdentifier();
		mHandler.post(() -> {
		for (final int appId : mExactAlarmCandidates) {
		final int uid = UserHandle.getUid(userId, appId);
		final AndroidPackage androidPackage = mPackageManagerInternal.getPackage(uid);
		// It will be null if it is not installed on the starting user.
		if (androidPackage != null) {
		final int mode = mAppOps.checkOpNoThrow(AppOpsManager.OP_SCHEDULE_EXACT_ALARM,
		uid, androidPackage.getPackageName());
		synchronized (mLock) {
		mLastOpScheduleExactAlarm.put(uid, mode);
		}
		}
		}
		});
		}

		@Override
		@@ -1706,17 +1796,44 @@ public class AlarmManagerService extends SystemService {
		@Override
		public void opChanged(int op, int uid, String packageName)
		throws RemoteException {
		if (op != AppOpsManager.OP_SCHEDULE_EXACT_ALARM) {
		final int userId = UserHandle.getUserId(uid);
		if (op != AppOpsManager.OP_SCHEDULE_EXACT_ALARM
		\|\| !isExactAlarmChangeEnabled(packageName, userId)) {
		return;
		}
		if (!hasScheduleExactAlarmInternal(packageName, uid)) {

		final boolean requested = mExactAlarmCandidates.contains(
		UserHandle.getAppId(uid));
		final boolean denyListed =
		mConstants.EXACT_ALARM_DENY_LIST.contains(packageName);

		final int newMode = mAppOps.checkOpNoThrow(
		AppOpsManager.OP_SCHEDULE_EXACT_ALARM, uid, packageName);

		final int oldMode;
		synchronized (mLock) {
		final int index = mLastOpScheduleExactAlarm.indexOfKey(uid);
		if (index < 0) {
		oldMode = AppOpsManager.opToDefaultMode(
		AppOpsManager.OP_SCHEDULE_EXACT_ALARM);
		mLastOpScheduleExactAlarm.put(uid, newMode);
		} else {
		oldMode = mLastOpScheduleExactAlarm.valueAt(index);
		mLastOpScheduleExactAlarm.setValueAt(index, newMode);
		}
		}

		final boolean hadPermission = getScheduleExactAlarmState(requested,
		denyListed, oldMode);
		final boolean hasPermission = getScheduleExactAlarmState(requested,
		denyListed, newMode);

		if (hadPermission && !hasPermission) {
		mHandler.obtainMessage(AlarmHandler.REMOVE_EXACT_ALARMS,
		uid, 0, packageName).sendToTarget();
		} else {
		// TODO(b/187206399) Make sure this won't be sent, if the app
		// already had the appop previously.
		} else if (!hadPermission && hasPermission) {
		sendScheduleExactAlarmPermissionStateChangedBroadcast(
		packageName, UserHandle.getUserId(uid));
		packageName, userId);
		}
		}
		});
		@@ -2256,12 +2373,28 @@ public class AlarmManagerService extends SystemService {
		}
		}

		private static boolean getScheduleExactAlarmState(boolean requested, boolean denyListed,
		int appOpMode) {
		if (!requested) {
		return false;
		}
		if (appOpMode == AppOpsManager.MODE_DEFAULT) {
		return !denyListed;
		}
		return appOpMode == AppOpsManager.MODE_ALLOWED;
		}

		boolean hasScheduleExactAlarmInternal(String packageName, int uid) {
		// Not using getScheduleExactAlarmState as this can avoid some calls to AppOpsService.
		// Not using #mLastOpScheduleExactAlarm as it may contain stale values.
		// No locking needed as all internal containers being queried are immutable.

		final long start = mStatLogger.getTime();
		final boolean hasPermission;
		// No locking needed as all internal containers being queried are immutable.
		if (!mExactAlarmCandidates.contains(UserHandle.getAppId(uid))) {
		hasPermission = false;
		} else if (!isExactAlarmChangeEnabled(packageName, UserHandle.getUserId(uid))) {
		hasPermission = false;
		} else {
		final int mode = mAppOps.checkOpNoThrow(AppOpsManager.OP_SCHEDULE_EXACT_ALARM, uid,
		packageName);
		@@ -2368,8 +2501,7 @@ public class AlarmManagerService extends SystemService {
		} else if (exact \|\| allowWhileIdle) {
		final boolean needsPermission;
		boolean lowerQuota;
		if (CompatChanges.isChangeEnabled(AlarmManager.REQUIRE_EXACT_ALARM_PERMISSION,
		callingPackage, UserHandle.of(callingUserId))) {
		if (isExactAlarmChangeEnabled(callingPackage, callingUserId)) {
		needsPermission = exact;
		lowerQuota = !exact;
		idleOptions = exact ? mOptsWithFgs.toBundle() : mOptsWithoutFgs.toBundle();
		@@ -2524,6 +2656,11 @@ public class AlarmManagerService extends SystemService {
		}
		};

		private static boolean isExactAlarmChangeEnabled(String packageName, int userId) {
		return CompatChanges.isChangeEnabled(AlarmManager.REQUIRE_EXACT_ALARM_PERMISSION,
		packageName, UserHandle.of(userId));
		}

		void dumpImpl(IndentingPrintWriter pw) {
		synchronized (mLock) {
		pw.println("Current Alarm Manager state:");
		@@ -2672,6 +2809,17 @@ public class AlarmManagerService extends SystemService {
		pw.println();
		pw.println("App ids requesting SCHEDULE_EXACT_ALARM: " + mExactAlarmCandidates);

		pw.println();
		pw.print("Last OP_SCHEDULE_EXACT_ALARM: [");
		for (int i = 0; i < mLastOpScheduleExactAlarm.size(); i++) {
		if (i > 0) {
		pw.print(", ");
		}
		UserHandle.formatUid(pw, mLastOpScheduleExactAlarm.keyAt(i));
		pw.print(":" + AppOpsManager.modeToName(mLastOpScheduleExactAlarm.valueAt(i)));
		}
		pw.println("]");

		pw.println();
		pw.println("Next alarm clock information: ");
		pw.increaseIndent();
		@@ -3362,30 +3510,58 @@ public class AlarmManagerService extends SystemService {
		}

		/**
		* Called when some packages are added to the {@link Constants#EXACT_ALARM_DENY_LIST}, as this
		* may cause some of them to lose their permission.
		* Called when the {@link Constants#EXACT_ALARM_DENY_LIST}, changes with the packages that
		* either got added or deleted.
		* These packages may lose or gain the SCHEDULE_EXACT_ALARM permission.
		*
		* Note that these packages don't need to be installed on the device, but if they do have an
		* exact alarm scheduled and they lose the permission, this alarm will be canceled.
		* Note that these packages don't need to be installed on the device, but if they are and they
		* do undergo a permission change, we will handle them appropriately.
		*
		* This should not be called with the lock held as it calls out to other services.
		* This is not expected to get called frequently.
		*/
		void handlePackagesAddedToExactAlarmsDenyListLocked(ArraySet<String> packageNames) {
		Slog.w(TAG, "Packages " + packageNames + " added to the exact alarm deny list.");
		final Predicate<Alarm> whichAlarms = a -> {
		if (!packageNames.contains(a.packageName) \|\| a.windowLength != 0) {
		return false;
		void handleChangesToExactAlarmDenyList(ArraySet<String> changedPackages, boolean added) {
		Slog.w(TAG, "Packages " + changedPackages + (added ? " added to" : " removed from")
		+ " the exact alarm deny list.");

		final int[] startedUserIds = mActivityManagerInternal.getStartedUserIds();

		for (int i = 0; i < changedPackages.size(); i++) {
		final String changedPackage = changedPackages.valueAt(i);
		for (final int userId : startedUserIds) {
		final int uid = mPackageManagerInternal.getPackageUid(changedPackage, 0, userId);
		if (uid <= 0) {
		continue;
		}
		if (!isExactAlarmChangeEnabled(changedPackage, userId)) {
		continue;
		}
		final int appOpMode;
		synchronized (mLock) {
		appOpMode = mLastOpScheduleExactAlarm.get(uid,
		AppOpsManager.opToDefaultMode(AppOpsManager.OP_SCHEDULE_EXACT_ALARM));
		}
		final boolean requested = mExactAlarmCandidates.contains(UserHandle.getAppId(uid));

		// added: true => package was added to the deny list
		// added: false => package was removed from the deny list
		final boolean hadPermission = getScheduleExactAlarmState(requested, !added,
		appOpMode);
		final boolean hasPermission = getScheduleExactAlarmState(requested, added,
		appOpMode);

		if (hadPermission == hasPermission) {
		continue;
		}
		if (added) {
		synchronized (mLock) {
		removeExactAlarmsOnPermissionRevokedLocked(uid, changedPackage);
		}
		} else {
		sendScheduleExactAlarmPermissionStateChangedBroadcast(changedPackage, userId);
		}
		if (!CompatChanges.isChangeEnabled(AlarmManager.REQUIRE_EXACT_ALARM_PERMISSION,
		a.packageName, UserHandle.getUserHandleForUid(a.uid))) {
		return false;
		}
		if (a.alarmClock == null && isExemptFromExactAlarmPermission(a.uid)) {
		return false;
		}
		return !hasScheduleExactAlarmInternal(a.packageName, a.uid);
		};
		removeAlarmsInternalLocked(whichAlarms, REMOVE_REASON_EXACT_PERMISSION_REVOKED);
		}

		/**
		@@ -3396,9 +3572,7 @@ public class AlarmManagerService extends SystemService {
		*/
		void removeExactAlarmsOnPermissionRevokedLocked(int uid, String packageName) {
		Slog.w(TAG, "Package " + packageName + ", uid " + uid + " lost SCHEDULE_EXACT_ALARM!");
		if (!CompatChanges.isChangeEnabled(
		AlarmManager.REQUIRE_EXACT_ALARM_PERMISSION,
		packageName, UserHandle.getUserHandleForUid(uid))) {
		if (!isExactAlarmChangeEnabled(packageName, UserHandle.getUserId(uid))) {
		return;
		}

		@@ -3409,6 +3583,11 @@ public class AlarmManagerService extends SystemService {
		return false;
		};
		removeAlarmsInternalLocked(whichAlarms, REMOVE_REASON_EXACT_PERMISSION_REVOKED);

		if (mConstants.KILL_ON_SCHEDULE_EXACT_ALARM_REVOKED) {
		PermissionManagerService.killUid(UserHandle.getAppId(uid), UserHandle.getUserId(uid),
		"schedule_exact_alarm revoked");
		}
		}

		private void removeAlarmsInternalLocked(Predicate<Alarm> whichAlarms, int reason) {
		@@ -3535,6 +3714,11 @@ public class AlarmManagerService extends SystemService {
		mRemovalHistory.removeAt(i);
		}
		}
		for (int i = mLastOpScheduleExactAlarm.size() - 1; i >= 0; i--) {
		if (UserHandle.getUserId(mLastOpScheduleExactAlarm.keyAt(i)) == userHandle) {
		mLastOpScheduleExactAlarm.removeAt(i);
		}
		}
		}

		void interactiveStateChangedLocked(boolean interactive) {
		@@ -4091,8 +4275,9 @@ public class AlarmManagerService extends SystemService {
		public static final int CHARGING_STATUS_CHANGED = 6;
		public static final int REMOVE_FOR_CANCELED = 7;
		public static final int REMOVE_EXACT_ALARMS = 8;
		public static final int EXACT_ALARM_DENY_LIST_CHANGED = 9;
		public static final int REFRESH_EXACT_ALARM_CANDIDATES = 10;
		public static final int EXACT_ALARM_DENY_LIST_PACKAGES_ADDED = 9;
		public static final int EXACT_ALARM_DENY_LIST_PACKAGES_REMOVED = 10;
		public static final int REFRESH_EXACT_ALARM_CANDIDATES = 11;

		AlarmHandler() {
		super(Looper.myLooper());
		@@ -4179,10 +4364,11 @@ public class AlarmManagerService extends SystemService {
		removeExactAlarmsOnPermissionRevokedLocked(uid, packageName);
		}
		break;
		case EXACT_ALARM_DENY_LIST_CHANGED:
		synchronized (mLock) {
		handlePackagesAddedToExactAlarmsDenyListLocked((ArraySet<String>) msg.obj);
		}
		case EXACT_ALARM_DENY_LIST_PACKAGES_ADDED:
		handleChangesToExactAlarmDenyList((ArraySet<String>) msg.obj, true);
		break;
		case EXACT_ALARM_DENY_LIST_PACKAGES_REMOVED:
		handleChangesToExactAlarmDenyList((ArraySet<String>) msg.obj, false);
		break;
		case REFRESH_EXACT_ALARM_CANDIDATES:
		refreshExactAlarmCandidates();
		@@ -4349,6 +4535,7 @@ public class AlarmManagerService extends SystemService {
		case Intent.ACTION_UID_REMOVED:
		mLastPriorityAlarmDispatch.delete(uid);
		mRemovalHistory.delete(uid);
		mLastOpScheduleExactAlarm.delete(uid);
		return;
		case Intent.ACTION_PACKAGE_REMOVED:
		if (intent.getBooleanExtra(Intent.EXTRA_REPLACING, false)) {

core/java/android/app/ActivityManagerInternal.java

+3 −0

Original line number	Diff line number	Diff line
		@@ -254,6 +254,9 @@ public abstract class ActivityManagerInternal {
		/** Returns the current user id. */
		public abstract int getCurrentUserId();

		/** Returns the currently started user ids. */
		public abstract int[] getStartedUserIds();

		/** Returns true if the user is running. */
		public abstract boolean isUserRunning(@UserIdInt int userId, int flags);

services/core/java/com/android/server/am/ActivityManagerService.java

+5 −0

Original line number	Diff line number	Diff line
		@@ -15348,6 +15348,11 @@ public class ActivityManagerService extends IActivityManager.Stub
		return mPendingIntentController.getPendingIntentFlags(target);
		}

		@Override
		public int[] getStartedUserIds() {
		return mUserController.getStartedUserArray();
		}

		@Override
		public void setPendingIntentAllowBgActivityStarts(IIntentSender target,
		IBinder allowlistToken, int flags) {