diff options
| -rw-r--r-- | media/java/android/media/session/MediaSession.java | 8 | ||||
| -rw-r--r-- | services/core/java/com/android/server/media/MediaSessionRecord.java | 33 |
2 files changed, 38 insertions, 3 deletions
diff --git a/media/java/android/media/session/MediaSession.java b/media/java/android/media/session/MediaSession.java index 84ecc06d172f..09eff9e4e13a 100644 --- a/media/java/android/media/session/MediaSession.java +++ b/media/java/android/media/session/MediaSession.java @@ -297,9 +297,11 @@ public final class MediaSession { * class that should receive media buttons. This allows restarting playback after the session * has been stopped. If your app is started in this way an {@link Intent#ACTION_MEDIA_BUTTON} * intent will be sent to the broadcast receiver. - * <p> - * Note: The given {@link android.content.BroadcastReceiver} should belong to the same package - * as the context that was given when creating {@link MediaSession}. + * + * <p>Note: The given {@link android.content.BroadcastReceiver} should belong to the same + * package as the context that was given when creating {@link MediaSession}. + * + * <p>Calls with invalid or non-existent receivers will be ignored. * * @param broadcastReceiver the component name of the BroadcastReceiver class */ diff --git a/services/core/java/com/android/server/media/MediaSessionRecord.java b/services/core/java/com/android/server/media/MediaSessionRecord.java index 5c28ddd47f23..b459cfe6b44e 100644 --- a/services/core/java/com/android/server/media/MediaSessionRecord.java +++ b/services/core/java/com/android/server/media/MediaSessionRecord.java @@ -16,14 +16,19 @@ package com.android.server.media; +import android.Manifest; +import android.annotation.NonNull; import android.annotation.Nullable; +import android.annotation.RequiresPermission; import android.app.PendingIntent; import android.content.ComponentName; import android.content.ContentProvider; import android.content.ContentResolver; import android.content.Context; import android.content.Intent; +import android.content.pm.PackageManager; import android.content.pm.ParceledListSlice; +import android.content.pm.ResolveInfo; import android.media.AudioAttributes; import android.media.AudioManager; import android.media.AudioSystem; @@ -54,6 +59,7 @@ import android.os.Process; import android.os.RemoteException; import android.os.ResultReceiver; import android.os.SystemClock; +import android.os.UserHandle; import android.text.TextUtils; import android.util.EventLog; import android.util.Log; @@ -895,6 +901,22 @@ public class MediaSessionRecord implements IBinder.DeathRecipient, MediaSessionR } }; + @RequiresPermission(Manifest.permission.INTERACT_ACROSS_USERS) + private static boolean componentNameExists( + @NonNull ComponentName componentName, @NonNull Context context, int userId) { + Intent mediaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON); + mediaButtonIntent.addFlags(Intent.FLAG_RECEIVER_FOREGROUND); + mediaButtonIntent.setComponent(componentName); + + UserHandle userHandle = UserHandle.of(userId); + PackageManager pm = context.getPackageManager(); + + List<ResolveInfo> resolveInfos = + pm.queryBroadcastReceiversAsUser( + mediaButtonIntent, /* flags */ 0, userHandle); + return !resolveInfos.isEmpty(); + } + private final class SessionStub extends ISession.Stub { @Override public void destroySession() throws RemoteException { @@ -965,6 +987,7 @@ public class MediaSessionRecord implements IBinder.DeathRecipient, MediaSessionR } @Override + @RequiresPermission(Manifest.permission.INTERACT_ACROSS_USERS) public void setMediaButtonBroadcastReceiver(ComponentName receiver) throws RemoteException { final long token = Binder.clearCallingIdentity(); try { @@ -980,6 +1003,16 @@ public class MediaSessionRecord implements IBinder.DeathRecipient, MediaSessionR != 0) { return; } + + if (!componentNameExists(receiver, mContext, mUserId)) { + Log.w( + TAG, + "setMediaButtonBroadcastReceiver(): " + + "Ignoring invalid component name=" + + receiver); + return; + } + mMediaButtonReceiverHolder = MediaButtonReceiverHolder.create(mUserId, receiver); mService.onMediaButtonReceiverChanged(MediaSessionRecord.this); } finally { |