Merge "[Roll Forward] Block background custom toasts" (5cf5c3fe) · Commits · e / os / android_frameworks_base

core/java/android/app/INotificationManager.aidl

+2 −0

Original line number	Diff line number	Diff line
		@@ -44,6 +44,8 @@ interface INotificationManager
		void cancelAllNotifications(String pkg, int userId);

		void clearData(String pkg, int uid, boolean fromApp);
		// TODO: Replace parameter (ITransientNotification callback) with (CharSequence text)
		void enqueueTextToast(String pkg, ITransientNotification callback, int duration, int displayId);
		@UnsupportedAppUsage
		void enqueueToast(String pkg, ITransientNotification callback, int duration, int displayId);
		@UnsupportedAppUsage

core/java/android/widget/Toast.java

+9 −1

Original line number	Diff line number	Diff line
		@@ -100,6 +100,8 @@ public class Toast {
		@UnsupportedAppUsage
		int mDuration;
		View mNextView;
		// TODO(b/128611929): Remove this and check for null view when toast creation is in the system
		boolean mIsCustomToast = false;

		/**
		* Construct an empty Toast object. You must call {@link #setView} before you
		@@ -140,7 +142,11 @@ public class Toast {
		final int displayId = mContext.getDisplayId();

		try {
		if (mIsCustomToast) {
		service.enqueueToast(pkg, tn, mDuration, displayId);
		} else {
		service.enqueueTextToast(pkg, tn, mDuration, displayId);
		}
		} catch (RemoteException e) {
		// Empty
		}
		@@ -160,6 +166,7 @@ public class Toast {
		* @see #getView
		*/
		public void setView(View view) {
		mIsCustomToast = true;
		mNextView = view;
		}

		@@ -168,6 +175,7 @@ public class Toast {
		* @see #setView
		*/
		public View getView() {
		mIsCustomToast = true;
		return mNextView;
		}

services/core/Android.bp

+4 −0

Original line number	Diff line number	Diff line
		@@ -118,6 +118,10 @@ java_library_static {
		"dnsresolver_aidl_interface-V2-java",
		"netd_event_listener_interface-java",
		],

		plugins: [
		"compat-changeid-annotation-processor",
		],
		}

		java_genrule {

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

+64 −10

Original line number	Diff line number	Diff line
		@@ -131,6 +131,7 @@ import android.app.role.RoleManager;
		import android.app.usage.UsageEvents;
		import android.app.usage.UsageStatsManagerInternal;
		import android.companion.ICompanionDeviceManager;
		import android.compat.annotation.ChangeId;
		import android.content.BroadcastReceiver;
		import android.content.ComponentName;
		import android.content.ContentProvider;
		@@ -216,6 +217,7 @@ import android.widget.Toast;
		import com.android.internal.R;
		import com.android.internal.annotations.GuardedBy;
		import com.android.internal.annotations.VisibleForTesting;
		import com.android.internal.compat.IPlatformCompat;
		import com.android.internal.config.sysui.SystemUiDeviceConfigFlags;
		import com.android.internal.logging.MetricsLogger;
		import com.android.internal.logging.nano.MetricsProto;
		@@ -236,6 +238,7 @@ import com.android.server.EventLogTags;
		import com.android.server.IoThread;
		import com.android.server.LocalServices;
		import com.android.server.SystemService;
		import com.android.server.UiThread;
		import com.android.server.lights.Light;
		import com.android.server.lights.LightsManager;
		import com.android.server.notification.ManagedServices.ManagedServiceInfo;
		@@ -355,6 +358,15 @@ public class NotificationManagerService extends SystemService {
		private static final int REQUEST_CODE_TIMEOUT = 1;
		private static final String SCHEME_TIMEOUT = "timeout";
		private static final String EXTRA_KEY = "key";

		/**
		* Apps targeting R+ that post custom toasts in the background will have those blocked. Apps can
		* still post toasts created with {@link Toast#makeText(Context, CharSequence, int)} and its
		* variants while in the background.
		*/
		@ChangeId
		private static final long CHANGE_BACKGROUND_CUSTOM_TOAST_BLOCK = 128611929L;

		private IActivityManager mAm;
		private ActivityManager mActivityManager;
		private IPackageManager mPackageManager;
		@@ -372,9 +384,11 @@ public class NotificationManagerService extends SystemService {
		private UriGrantsManagerInternal mUgmInternal;
		private RoleObserver mRoleObserver;
		private UserManager mUm;
		private IPlatformCompat mPlatformCompat;

		final IBinder mForegroundToken = new Binder();
		private WorkerHandler mHandler;
		private Handler mUiHandler;
		private final HandlerThread mRankingThread = new HandlerThread("ranker",
		Process.THREAD_PRIORITY_BACKGROUND);

		@@ -1782,8 +1796,11 @@ public class NotificationManagerService extends SystemService {
		ServiceManager.getService(Context.DEVICE_IDLE_CONTROLLER));
		mDpm = dpm;
		mUm = userManager;
		mPlatformCompat = IPlatformCompat.Stub.asInterface(
		ServiceManager.getService(Context.PLATFORM_COMPAT_SERVICE));

		mHandler = new WorkerHandler(looper);
		mUiHandler = new Handler(UiThread.get().getLooper());
		String[] extractorNames;
		try {
		extractorNames = resources.getStringArray(R.array.config_notificationSignalExtractors);
		@@ -2449,10 +2466,20 @@ public class NotificationManagerService extends SystemService {
		// Toasts
		// ============================================================================

		@Override
		public void enqueueTextToast(String pkg, ITransientNotification callback, int duration,
		int displayId) {
		enqueueToast(pkg, callback, duration, displayId, false);
		}

		@Override
		public void enqueueToast(String pkg, ITransientNotification callback, int duration,
		int displayId)
		{
		int displayId) {
		enqueueToast(pkg, callback, duration, displayId, true);
		}

		private void enqueueToast(String pkg, ITransientNotification callback, int duration,
		int displayId, boolean isCustomToast) {
		if (DBG) {
		Slog.i(TAG, "enqueueToast pkg=" + pkg + " callback=" + callback
		+ " duration=" + duration + " displayId=" + displayId);
		@@ -2464,16 +2491,22 @@ public class NotificationManagerService extends SystemService {
		}

		final int callingUid = Binder.getCallingUid();
		final UserHandle callingUser = Binder.getCallingUserHandle();
		final boolean isSystemToast = isCallerSystemOrPhone()
		\|\| PackageManagerService.PLATFORM_PACKAGE_NAME.equals(pkg);
		final boolean isPackageSuspended = isPackagePaused(pkg);
		final boolean notificationsDisabledForPackage = !areNotificationsEnabledForPackage(pkg,
		callingUid);

		final boolean appIsForeground;
		long callingIdentity = Binder.clearCallingIdentity();
		try {
		final boolean appIsForeground = mActivityManager.getUidImportance(callingUid)
		appIsForeground = mActivityManager.getUidImportance(callingUid)
		== IMPORTANCE_FOREGROUND;
		} finally {
		Binder.restoreCallingIdentity(callingIdentity);
		}

		if (ENABLE_BLOCKED_TOASTS && !isSystemToast && ((notificationsDisabledForPackage
		&& !appIsForeground) \|\| isPackageSuspended)) {
		Slog.e(TAG, "Suppressing toast from package " + pkg
		@@ -2481,8 +2514,29 @@ public class NotificationManagerService extends SystemService {
		: " by user request."));
		return;
		}
		} finally {
		Binder.restoreCallingIdentity(callingIdentity);

		if (isCustomToast && !appIsForeground && !isSystemToast) {
		boolean block;
		try {
		block = mPlatformCompat.isChangeEnabledByPackageName(
		CHANGE_BACKGROUND_CUSTOM_TOAST_BLOCK, pkg,
		callingUser.getIdentifier());
		} catch (RemoteException e) {
		// Shouldn't happen have since it's a local local
		Slog.e(TAG, "Unexpected exception while checking block background custom toasts"
		+ " change", e);
		block = false;
		}
		if (block) {
		// TODO(b/144152069): Remove informative toast
		mUiHandler.post(() -> Toast.makeText(getContext(),
		"Background custom toast blocked for package " + pkg + ".\n"
		+ "See go/r-toast-block.",
		Toast.LENGTH_SHORT).show());
		Slog.w(TAG, "Blocking custom toast from package " + pkg
		+ " due to package not in the foreground");
		return;
		}
		}

		synchronized (mToastQueue) {