Merge "Fix allowlist token issues" into udc-dev (ef34c77b) · Commits · e / os / android_frameworks_base

core/java/android/app/Notification.java

+37 −11

Original line number	Diff line number	Diff line
		@@ -2598,8 +2598,11 @@ public class Notification implements Parcelable
		if (mAllowlistToken == null) {
		mAllowlistToken = processAllowlistToken;
		}
		// Propagate this token to all pending intents that are unmarshalled from the parcel.
		// Propagate this token to all pending intents that are unmarshalled from the parcel,
		// or keep the one we're already propagating, if that's the case.
		if (!parcel.hasClassCookie(PendingIntent.class)) {
		parcel.setClassCookie(PendingIntent.class, mAllowlistToken);
		}

		when = parcel.readLong();
		creationTime = parcel.readLong();
		@@ -3058,10 +3061,25 @@ public class Notification implements Parcelable
		}
		});
		}
		try {
		boolean mustClearCookie = false;
		if (!parcel.hasClassCookie(Notification.class)) {
		// This is the "root" notification, and not an "inner" notification (including
		// publicVersion or anything else that might be embedded in extras). So we want
		// to use its token for every inner notification (might be null).
		parcel.setClassCookie(Notification.class, mAllowlistToken);
		mustClearCookie = true;
		}
		try {
		// IMPORTANT: Add marshaling code in writeToParcelImpl as we
		// want to intercept all pending events written to the parcel.
		writeToParcelImpl(parcel, flags);
		} finally {
		if (mustClearCookie) {
		parcel.removeClassCookie(Notification.class, mAllowlistToken);
		}
		}

		synchronized (this) {
		// Must be written last!
		parcel.writeArraySet(allPendingIntents);
		@@ -3076,7 +3094,10 @@ public class Notification implements Parcelable
		private void writeToParcelImpl(Parcel parcel, int flags) {
		parcel.writeInt(1);

		parcel.writeStrongBinder(mAllowlistToken);
		// Always use the same token as the root notification (might be null).
		IBinder rootNotificationToken = (IBinder) parcel.getClassCookie(Notification.class);
		parcel.writeStrongBinder(rootNotificationToken);

		parcel.writeLong(when);
		parcel.writeLong(creationTime);
		if (mSmallIcon == null && icon != 0) {
		@@ -3469,16 +3490,21 @@ public class Notification implements Parcelable
		* Sets the token used for background operations for the pending intents associated with this
		* notification.
		*
		* This token is automatically set during deserialization for you, you usually won't need to
		* call this unless you want to change the existing token, if any.
		* Note: Should <em>only</em> be invoked by NotificationManagerService, since this is normally
		* populated by unparceling (and also used there). Any other usage is suspect.
		*
		* @hide
		*/
		public void clearAllowlistToken() {
		mAllowlistToken = null;
		public void overrideAllowlistToken(IBinder token) {
		mAllowlistToken = token;
		if (publicVersion != null) {
		publicVersion.clearAllowlistToken();
		publicVersion.overrideAllowlistToken(token);
		}
		}

		/** @hide */
		public IBinder getAllowlistToken() {
		return mAllowlistToken;
		}

		/**

core/java/android/os/Parcel.java

+22 −0

Original line number	Diff line number	Diff line
		@@ -815,6 +815,28 @@ public final class Parcel {
		return mClassCookies != null ? mClassCookies.get(clz) : null;
		}

		/** @hide */
		public void removeClassCookie(Class clz, Object expectedCookie) {
		if (mClassCookies != null) {
		Object removedCookie = mClassCookies.remove(clz);
		if (removedCookie != expectedCookie) {
		Log.wtf(TAG, "Expected to remove " + expectedCookie + " (with key=" + clz
		+ ") but instead removed " + removedCookie);
		}
		} else {
		Log.wtf(TAG, "Expected to remove " + expectedCookie + " (with key=" + clz
		+ ") but no cookies were present");
		}
		}

		/**
		* Whether {@link #setClassCookie} has been called with the specified {@code clz}.
		* @hide
		*/
		public boolean hasClassCookie(Class clz) {
		return mClassCookies != null && mClassCookies.containsKey(clz);
		}

		/** @hide */
		public final void adoptClassCookies(Parcel from) {
		mClassCookies = from.mClassCookies;

core/tests/coretests/src/android/os/ParcelTest.java

+49 −0

Original line number	Diff line number	Diff line
		@@ -16,18 +16,23 @@

		package android.os;

		import static com.google.common.truth.Truth.assertThat;

		import static org.junit.Assert.assertEquals;
		import static org.junit.Assert.assertFalse;
		import static org.junit.Assert.assertThrows;
		import static org.junit.Assert.assertTrue;

		import android.platform.test.annotations.Presubmit;
		import android.util.Log;

		import androidx.test.runner.AndroidJUnit4;

		import org.junit.Test;
		import org.junit.runner.RunWith;

		import java.util.ArrayList;

		@Presubmit
		@RunWith(AndroidJUnit4.class)
		public class ParcelTest {
		@@ -246,4 +251,48 @@ public class ParcelTest {
		assertThrows(IllegalArgumentException.class, () -> Parcel.compareData(pA, -1, pB, iB, 0));
		assertThrows(IllegalArgumentException.class, () -> Parcel.compareData(pA, 0, pB, -1, 0));
		}

		@Test
		public void testClassCookies() {
		Parcel p = Parcel.obtain();
		assertThat(p.hasClassCookie(ParcelTest.class)).isFalse();

		p.setClassCookie(ParcelTest.class, "string_cookie");
		assertThat(p.hasClassCookie(ParcelTest.class)).isTrue();
		assertThat(p.getClassCookie(ParcelTest.class)).isEqualTo("string_cookie");

		p.removeClassCookie(ParcelTest.class, "string_cookie");
		assertThat(p.hasClassCookie(ParcelTest.class)).isFalse();
		assertThat(p.getClassCookie(ParcelTest.class)).isEqualTo(null);

		p.setClassCookie(ParcelTest.class, "to_be_discarded_cookie");
		p.recycle();
		assertThat(p.getClassCookie(ParcelTest.class)).isNull();
		}

		@Test
		public void testClassCookies_removeUnexpected() {
		Parcel p = Parcel.obtain();

		assertLogsWtf(() -> p.removeClassCookie(ParcelTest.class, "not_present"));

		p.setClassCookie(ParcelTest.class, "value");

		assertLogsWtf(() -> p.removeClassCookie(ParcelTest.class, "different"));
		assertThat(p.getClassCookie(ParcelTest.class)).isNull(); // still removed

		p.recycle();
		}

		private static void assertLogsWtf(Runnable test) {
		ArrayList<Log.TerribleFailure> wtfs = new ArrayList<>();
		Log.TerribleFailureHandler oldHandler = Log.setWtfHandler(
		(tag, what, system) -> wtfs.add(what));
		try {
		test.run();
		} finally {
		Log.setWtfHandler(oldHandler);
		}
		assertThat(wtfs).hasSize(1);
		}
		}

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

+16 −2

Original line number	Diff line number	Diff line
		@@ -667,7 +667,7 @@ public class NotificationManagerService extends SystemService {

		private static final int MY_UID = Process.myUid();
		private static final int MY_PID = Process.myPid();
		private static final IBinder ALLOWLIST_TOKEN = new Binder();
		static final IBinder ALLOWLIST_TOKEN = new Binder();
		protected RankingHandler mRankingHandler;
		private long mLastOverRateLogTime;
		private float mMaxPackageEnqueueRate = DEFAULT_MAX_NOTIFICATION_ENQUEUE_RATE;
		@@ -4472,7 +4472,7 @@ public class NotificationManagerService extends SystemService {
		// Remove background token before returning notification to untrusted app, this
		// ensures the app isn't able to perform background operations that are
		// associated with notification interactions.
		notification.clearAllowlistToken();
		notification.overrideAllowlistToken(null);
		return new StatusBarNotification(
		sbn.getPackageName(),
		sbn.getOpPkg(),
		@@ -6713,6 +6713,15 @@ public class NotificationManagerService extends SystemService {
		+ " trying to post for invalid pkg " + pkg + " in user " + incomingUserId);
		}

		IBinder allowlistToken = notification.getAllowlistToken();
		if (allowlistToken != null && allowlistToken != ALLOWLIST_TOKEN) {
		throw new SecurityException(
		"Unexpected allowlist token received from " + callingUid);
		}
		// allowlistToken is populated by unparceling, so it can be null if the notification was
		// posted from inside system_server. Ensure it's the expected value.
		notification.overrideAllowlistToken(ALLOWLIST_TOKEN);

		checkRestrictedCategories(notification);

		// Notifications passed to setForegroundService() have FLAG_FOREGROUND_SERVICE,
		@@ -7776,6 +7785,11 @@ public class NotificationManagerService extends SystemService {
		*/
		private boolean enqueueNotification() {
		synchronized (mNotificationLock) {
		// allowlistToken is populated by unparceling, so it will be absent if the
		// EnqueueNotificationRunnable is created directly by NMS (as we do for group
		// summaries) instead of via notify(). Fix that.
		r.getNotification().overrideAllowlistToken(ALLOWLIST_TOKEN);

		final long snoozeAt =
		mSnoozeHelper.getSnoozeTimeForUnpostedNotification(
		r.getUser().getIdentifier(),

services/tests/uiservicestests/src/com/android/server/notification/NotificationManagerServiceTest.java

+346 −3

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