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      1 /*
      2  * Copyright (C) 2014 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.tv.settings.users;
     18 
     19 import android.app.ActivityManagerNative;
     20 import android.app.IUserSwitchObserver;
     21 import android.app.Service;
     22 import android.content.BroadcastReceiver;
     23 import android.content.ComponentName;
     24 import android.content.Context;
     25 import android.content.Intent;
     26 import android.content.SharedPreferences;
     27 import android.content.pm.PackageManager;
     28 import android.os.IBinder;
     29 import android.os.IRemoteCallback;
     30 import android.os.RemoteException;
     31 import android.os.UserHandle;
     32 import android.os.UserManager;
     33 import android.util.Log;
     34 
     35 public class UserSwitchListenerService extends Service {
     36 
     37     private static final boolean DEBUG = false;
     38     private static final String TAG = "RestrictedProfile";
     39 
     40     private static final String RESTRICTED_PROFILE_LAUNCHER_ENTRY_ACTIVITY =
     41             "com.android.tv.settings.users.RestrictedProfileActivityLauncherEntry";
     42     private static final String SHARED_PREFERENCES_NAME = "RestrictedProfileSharedPreferences";
     43     private static final String
     44             ON_BOOT_USER_ID_PREFERENCE = "UserSwitchOnBootBroadcastReceiver.userId";
     45 
     46     public static class BootReceiver extends BroadcastReceiver {
     47         @Override
     48         public void onReceive(final Context context, Intent intent) {
     49 
     50             boolean isOwner = UserHandle.myUserId() == UserHandle.USER_OWNER;
     51 
     52             if (isOwner) {
     53                 context.startService(new Intent(context, UserSwitchListenerService.class));
     54                 int bootUserId = getBootUser(context);
     55                 if (DEBUG) {
     56                     Log.d(TAG,
     57                             "boot completed, user is " + UserHandle.myUserId()
     58                             + " boot user id: "
     59                             + bootUserId);
     60                 }
     61                 if (UserHandle.myUserId() != bootUserId) {
     62                     RestrictedProfileDialogFragment.switchUserNow(bootUserId);
     63                 }
     64             }
     65 
     66             updateLaunchPoint(context, null != RestrictedProfileDialogFragment.findRestrictedUser(
     67                     (UserManager) context.getSystemService(Context.USER_SERVICE)));
     68         }
     69     }
     70 
     71     static void updateLaunchPoint(Context context, boolean enableLaunchPoint) {
     72         if (DEBUG) {
     73             Log.d(TAG, "updating launch point: " + enableLaunchPoint);
     74         }
     75 
     76         PackageManager pm = context.getPackageManager();
     77         ComponentName compName = new ComponentName(context,
     78                 RESTRICTED_PROFILE_LAUNCHER_ENTRY_ACTIVITY);
     79         pm.setComponentEnabledSetting(compName,
     80                 enableLaunchPoint ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
     81                         : PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
     82                 PackageManager.DONT_KILL_APP);
     83     }
     84 
     85     static void setBootUser(Context context, int userId) {
     86         SharedPreferences.Editor editor = context.getSharedPreferences(SHARED_PREFERENCES_NAME,
     87                 Context.MODE_PRIVATE).edit();
     88         editor.putInt(ON_BOOT_USER_ID_PREFERENCE, userId);
     89         editor.apply();
     90     }
     91 
     92     static int getBootUser(Context context) {
     93         SharedPreferences prefs = context.getSharedPreferences(SHARED_PREFERENCES_NAME,
     94                 Context.MODE_PRIVATE);
     95         return prefs.getInt(ON_BOOT_USER_ID_PREFERENCE, UserHandle.USER_OWNER);
     96     }
     97 
     98     @Override
     99     public void onCreate() {
    100         super.onCreate();
    101         try {
    102             ActivityManagerNative.getDefault().registerUserSwitchObserver(
    103                     new IUserSwitchObserver.Stub() {
    104                         @Override
    105                         public void onUserSwitching(int newUserId, IRemoteCallback reply) {
    106                         }
    107 
    108                         @Override
    109                         public void onUserSwitchComplete(int newUserId) throws RemoteException {
    110                             if (DEBUG) {
    111                                 Log.d(TAG, "user has been foregrounded: " + newUserId);
    112                             }
    113                             setBootUser(UserSwitchListenerService.this, newUserId);
    114                         }
    115 
    116                         @Override
    117                         public void onForegroundProfileSwitch(int profileId)
    118                             throws RemoteException {
    119                         }
    120                     });
    121         } catch (RemoteException e) {
    122         }
    123     }
    124 
    125     @Override
    126     public int onStartCommand(Intent intent, int flags, int startId) {
    127         return START_STICKY;
    128     }
    129 
    130     @Override
    131     public IBinder onBind(Intent intent) {
    132         return null;
    133     }
    134 }
    135