/*
* Copyright 2018 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package androidx.media;
import android.content.Context;
import androidx.annotation.RequiresApi;
@RequiresApi(28)
class MediaSessionManagerImplApi28 extends MediaSessionManagerImplApi21 {
android.media.session.MediaSessionManager mObject;
MediaSessionManagerImplApi28(Context context) {
super(context);
mObject = (android.media.session.MediaSessionManager) context
.getSystemService(Context.MEDIA_SESSION_SERVICE);
}
@Override
public boolean isTrustedForMediaControl(MediaSessionManager.RemoteUserInfoImpl userInfo) {
// Don't use framework's isTrustedForMediaControl().
// In P, framework's isTrustedForMediaControl() does the sanity check whether the UID, PID,
// and package name match. In MediaSession/MediaController, Context#getPackageName() is
// used by MediaController to tell MediaSession the package name.
// However, UID, PID and Context#getPackageName() may not match if a activity/service runs
// on the another app's process by specifying android:process in the AndroidManifest.xml.
// In that case, sanity check will always fail.
// Alternative way is to use Context#getOpPackageName() for sending the package name,
// but it's hidden so we cannot use it.
return super.isTrustedForMediaControl(userInfo);
}
/**
* This extends {@link RemoteUserInfoImplBase} on purpose not to use frameworks' equals() and
* hashCode() implementation for two reasons:
*
* 1. To override PID checks when one of them are unknown.
* PID can be unknown between MediaBrowserCompat / MediaBrowserServiceCompat
* 2. To skip checking hidden binder.
* Framework's {@link android.media.session.MediaSessionManager.RemoteUserInfo} also checks
* internal binder to distinguish multiple {@link android.media.session.MediaController}
* and {@link android.media.browse.MediaBrowser} in a process. However, when the binders in
* both RemoteUserInfos are {@link null}, framework's equal() specially handles the case
* and returns {@code false}. This cause two issues that we need to workaround.
* Issue a) RemoteUserInfos created by key events are considered as all different.
* issue b) RemoteUserInfos created with public constructors are considers as all
* different.
*/
static final class RemoteUserInfoImplApi28 extends RemoteUserInfoImplBase {
final android.media.session.MediaSessionManager.RemoteUserInfo mObject;
RemoteUserInfoImplApi28(String packageName, int pid, int uid) {
super(packageName, pid, uid);
mObject = new android.media.session.MediaSessionManager.RemoteUserInfo(
packageName, pid, uid);
}
RemoteUserInfoImplApi28(
android.media.session.MediaSessionManager.RemoteUserInfo remoteUserInfo) {
super(remoteUserInfo.getPackageName(), remoteUserInfo.getPid(),
remoteUserInfo.getUid());
mObject = remoteUserInfo;
}
}
}