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/*
* Copyright (C) 2014 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 com.android.tv.settings.users;
import android.app.ActivityManager;
import android.app.Service;
import android.app.UserSwitchObserver;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.os.IBinder;
import android.os.RemoteException;
import android.os.UserHandle;
import android.os.UserManager;
import android.util.Log;
import com.android.tv.settings.library.users.RestrictedProfileModel;
public class UserSwitchListenerService extends Service {
private static final boolean DEBUG = false;
private static final String TAG = "RestrictedProfile";
private static final String RESTRICTED_PROFILE_LAUNCHER_ENTRY_ACTIVITY =
"com.android.tv.settings.users.RestrictedProfileActivityLauncherEntry";
private static final String SHARED_PREFERENCES_NAME = "RestrictedProfileSharedPreferences";
private static final String
ON_BOOT_USER_ID_PREFERENCE = "UserSwitchOnBootBroadcastReceiver.userId";
private final UserSwitchObserver mUserSwitchObserver = new UserSwitchObserver() {
@Override
public void onUserSwitchComplete(int newUserId) {
if (DEBUG) {
Log.d(TAG, "user has been foregrounded: " + newUserId);
}
setBootUser(UserSwitchListenerService.this, newUserId);
}
};
public static class BootReceiver extends BroadcastReceiver {
@Override
public void onReceive(final Context context, Intent intent) {
int bootUserId = getBootUser(context);
if (DEBUG) {
Log.d(TAG, "boot completed, user is " + UserHandle.myUserId()
+ " boot user id: " + bootUserId);
}
if (UserManager.get(context).isSystemUser()) {
if (UserHandle.myUserId() != bootUserId) {
switchUserNow(bootUserId);
}
}
onUserCreatedOrDeleted(context);
}
}
/** The UserSwitchListenerService is only ever needed when there is a restricted profile. */
private static boolean hasRestrictedProfile(Context context) {
return new RestrictedProfileModel(context).getUser() != null;
}
/**
* Enable or disable the restricted profile launcher entry activity as well as the
* {@link UserSwitchListenerService} depending on whether there is a restricted profile.
*/
public static void onUserCreatedOrDeleted(final Context context) {
final boolean restrictedProfile = hasRestrictedProfile(context);
if (DEBUG) {
Log.d(TAG, "updating restricted profile : " + restrictedProfile);
}
context.getPackageManager().setComponentEnabledSetting(new ComponentName(context,
RESTRICTED_PROFILE_LAUNCHER_ENTRY_ACTIVITY), restrictedProfile
? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
: PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
PackageManager.DONT_KILL_APP);
if (restrictedProfile) {
context.startServiceAsUser(new Intent(context, UserSwitchListenerService.class),
UserHandle.SYSTEM);
} else {
context.stopServiceAsUser(new Intent(context, UserSwitchListenerService.class),
UserHandle.SYSTEM);
}
}
static void setBootUser(Context context, int userId) {
SharedPreferences.Editor editor = context.getSharedPreferences(SHARED_PREFERENCES_NAME,
Context.MODE_PRIVATE).edit();
editor.putInt(ON_BOOT_USER_ID_PREFERENCE, userId);
editor.apply();
}
static int getBootUser(Context context) {
SharedPreferences prefs = context.getSharedPreferences(SHARED_PREFERENCES_NAME,
Context.MODE_PRIVATE);
return prefs.getInt(ON_BOOT_USER_ID_PREFERENCE, UserHandle.USER_SYSTEM);
}
private static void switchUserNow(int userId) {
try {
ActivityManager.getService().switchUser(userId);
} catch (RemoteException re) {
Log.e(TAG, "Caught exception while switching user! ", re);
}
}
@Override
public void onCreate() {
super.onCreate();
try {
ActivityManager.getService().registerUserSwitchObserver(
mUserSwitchObserver,
UserSwitchListenerService.class.getName());
} catch (RemoteException e) {
Log.e(TAG, "Caught exception while registering UserSwitchObserver", e);
}
}
@Override
public void onDestroy() {
try {
ActivityManager.getService().unregisterUserSwitchObserver(mUserSwitchObserver);
} catch (RemoteException e) {
// Not much we can do here
}
super.onDestroy();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
if (!hasRestrictedProfile(this)) {
stopSelf();
Log.w(TAG, "no restricted profiles found! Immediately finishing "
+ UserSwitchListenerService.class.getSimpleName());
}
return START_STICKY;
}
@Override
public IBinder onBind(Intent intent) {
return null;
}
}
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