Merge "Disallow deletion of channels with FGS notifications" (0130f64d) · Commits · e / os / android_frameworks_base

core/java/android/app/ActivityManagerInternal.java

+15 −0

Original line number	Diff line number	Diff line
		@@ -438,6 +438,21 @@ public abstract class ActivityManagerInternal {
		*/
		public abstract boolean hasRunningForegroundService(int uid, int foregroundServiceType);

		/**
		* Returns {@code true} if the given notification channel currently has a
		* notification associated with a foreground service. This is an AMS check
		* because that is the source of truth for the FGS state.
		*/
		public abstract boolean hasForegroundServiceNotification(String pkg, @UserIdInt int userId,
		String channelId);

		/**
		* If the given app has any FGSs whose notifications are in the given channel,
		* stop them.
		*/
		public abstract void stopForegroundServicesForChannel(String pkg, @UserIdInt int userId,
		String channelId);

		/**
		* Registers the specified {@code processObserver} to be notified of future changes to
		* process state.

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

+40 −0

Original line number	Diff line number	Diff line
		@@ -135,6 +135,7 @@ import java.text.SimpleDateFormat;
		import java.util.ArrayList;
		import java.util.Comparator;
		import java.util.List;
		import java.util.Objects;
		import java.util.Set;
		import java.util.function.Predicate;

		@@ -586,6 +587,45 @@ public final class ActiveServices {
		return smap != null ? smap.mStartingBackground.size() >= mMaxStartingBackground : false;
		}

		boolean hasForegroundServiceNotificationLocked(String pkg, int userId, String channelId) {
		final ServiceMap smap = mServiceMap.get(userId);
		if (smap != null) {
		for (int i = 0; i < smap.mServicesByInstanceName.size(); i++) {
		final ServiceRecord sr = smap.mServicesByInstanceName.valueAt(i);
		if (sr.appInfo.packageName.equals(pkg) && sr.isForeground) {
		if (Objects.equals(sr.foregroundNoti.getChannelId(), channelId)) {
		if (DEBUG_FOREGROUND_SERVICE) {
		Slog.d(TAG_SERVICE, "Channel u" + userId + "/pkg=" + pkg
		+ "/channelId=" + channelId
		+ " has fg service notification");
		}
		return true;
		}
		}
		}
		}
		return false;
		}

		void stopForegroundServicesForChannelLocked(String pkg, int userId, String channelId) {
		final ServiceMap smap = mServiceMap.get(userId);
		if (smap != null) {
		for (int i = 0; i < smap.mServicesByInstanceName.size(); i++) {
		final ServiceRecord sr = smap.mServicesByInstanceName.valueAt(i);
		if (sr.appInfo.packageName.equals(pkg) && sr.isForeground) {
		if (Objects.equals(sr.foregroundNoti.getChannelId(), channelId)) {
		if (DEBUG_FOREGROUND_SERVICE) {
		Slog.d(TAG_SERVICE, "Stopping FGS u" + userId + "/pkg=" + pkg
		+ "/channelId=" + channelId
		+ " for conversation channel clear");
		}
		stopServiceLocked(sr, false);
		}
		}
		}
		}
		}

		private ServiceMap getServiceMapLocked(int callingUser) {
		ServiceMap smap = mServiceMap.get(callingUser);
		if (smap == null) {

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

+16 −0

Original line number	Diff line number	Diff line
		@@ -15769,6 +15769,22 @@ public class ActivityManagerService extends IActivityManager.Stub
		}
		}

		@Override
		public boolean hasForegroundServiceNotification(String pkg, int userId,
		String channelId) {
		synchronized (ActivityManagerService.this) {
		return mServices.hasForegroundServiceNotificationLocked(pkg, userId, channelId);
		}
		}

		@Override
		public void stopForegroundServicesForChannel(String pkg, int userId,
		String channelId) {
		synchronized (ActivityManagerService.this) {
		mServices.stopForegroundServicesForChannelLocked(pkg, userId, channelId);
		}
		}

		@Override
		public void registerProcessObserver(IProcessObserver processObserver) {
		ActivityManagerService.this.registerProcessObserver(processObserver);

services/core/java/com/android/server/notification/NotificationManagerService.java

+33 −7

Original line number	Diff line number	Diff line
		@@ -3544,15 +3544,30 @@ public class NotificationManagerService extends SystemService {
		pkg, uid, channelId, conversationId, true, includeDeleted);
		}

		// Returns 'true' if the given channel has a notification associated
		// with an active foreground service.
		private void enforceDeletingChannelHasNoFgService(String pkg, int userId,
		String channelId) {
		if (mAmi.hasForegroundServiceNotification(pkg, userId, channelId)) {
		Slog.w(TAG, "Package u" + userId + "/" + pkg
		+ " may not delete notification channel '"
		+ channelId + "' with fg service");
		throw new SecurityException("Not allowed to delete channel " + channelId
		+ " with a foreground service");
		}
		}

		@Override
		public void deleteNotificationChannel(String pkg, String channelId) {
		checkCallerIsSystemOrSameApp(pkg);
		final int callingUid = Binder.getCallingUid();
		final int callingUser = UserHandle.getUserId(callingUid);
		if (NotificationChannel.DEFAULT_CHANNEL_ID.equals(channelId)) {
		throw new IllegalArgumentException("Cannot delete default channel");
		}
		enforceDeletingChannelHasNoFgService(pkg, callingUser, channelId);
		cancelAllNotificationsInt(MY_UID, MY_PID, pkg, channelId, 0, 0, true,
		UserHandle.getUserId(callingUid), REASON_CHANNEL_BANNED, null);
		callingUser, REASON_CHANNEL_BANNED, null);
		mPreferencesHelper.deleteNotificationChannel(pkg, callingUid, channelId);
		mListeners.notifyNotificationChannelChanged(pkg,
		UserHandle.getUserHandleForUid(callingUid),
		@@ -3565,19 +3580,23 @@ public class NotificationManagerService extends SystemService {
		public void deleteConversationNotificationChannels(String pkg, int uid,
		String conversationId) {
		checkCallerIsSystem();
		final int callingUid = Binder.getCallingUid();
		List<NotificationChannel> channels =
		mPreferencesHelper.getNotificationChannelsByConversationId(
		pkg, uid, conversationId);
		if (!channels.isEmpty()) {
		// Preflight for fg service notifications in these channels: do nothing
		// unless they're all eligible
		final int appUserId = UserHandle.getUserId(uid);
		for (NotificationChannel nc : channels) {
		final String channelId = nc.getId();
		mAmi.stopForegroundServicesForChannel(pkg, appUserId, channelId);
		cancelAllNotificationsInt(MY_UID, MY_PID, pkg, nc.getId(), 0, 0, true,
		UserHandle.getUserId(callingUid), REASON_CHANNEL_BANNED, null);
		mPreferencesHelper.deleteNotificationChannel(pkg, callingUid, nc.getId());
		appUserId, REASON_CHANNEL_BANNED, null);
		mPreferencesHelper.deleteNotificationChannel(pkg, uid, channelId);
		mListeners.notifyNotificationChannelChanged(pkg,
		UserHandle.getUserHandleForUid(callingUid),
		UserHandle.getUserHandleForUid(uid),
		mPreferencesHelper.getNotificationChannel(
		pkg, callingUid, nc.getId(), true),
		pkg, uid, channelId, true),
		NOTIFICATION_CHANNEL_OR_GROUP_DELETED);
		}
		handleSavePolicyFile();
		@@ -3608,13 +3627,20 @@ public class NotificationManagerService extends SystemService {
		NotificationChannelGroup groupToDelete =
		mPreferencesHelper.getNotificationChannelGroup(groupId, pkg, callingUid);
		if (groupToDelete != null) {
		// Preflight for allowability
		final int userId = UserHandle.getUserId(callingUid);
		List<NotificationChannel> groupChannels = groupToDelete.getChannels();
		for (int i = 0; i < groupChannels.size(); i++) {
		enforceDeletingChannelHasNoFgService(pkg, userId,
		groupChannels.get(i).getId());
		}
		List<NotificationChannel> deletedChannels =
		mPreferencesHelper.deleteNotificationChannelGroup(pkg, callingUid, groupId);
		for (int i = 0; i < deletedChannels.size(); i++) {
		final NotificationChannel deletedChannel = deletedChannels.get(i);
		cancelAllNotificationsInt(MY_UID, MY_PID, pkg, deletedChannel.getId(), 0, 0,
		true,
		UserHandle.getUserId(Binder.getCallingUid()), REASON_CHANNEL_BANNED,
		userId, REASON_CHANNEL_BANNED,
		null);
		mListeners.notifyNotificationChannelChanged(pkg,
		UserHandle.getUserHandleForUid(callingUid),