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.Activity;
20 import android.app.ActivityManagerNative;
21 import android.app.IUserSwitchObserver;
22 import android.app.Service;
23 import android.content.BroadcastReceiver;
24 import android.content.ComponentName;
25 import android.content.ContentResolver;
26 import android.content.Context;
27 import android.content.Intent;
28 import android.content.IntentFilter;
29 import android.content.SharedPreferences;
30 import android.content.pm.PackageManager;
31 import android.os.IBinder;
32 import android.os.IRemoteCallback;
33 import android.os.RemoteException;
34 import android.os.UserHandle;
35 import android.os.UserManager;
36 import android.provider.Settings;
37 import android.util.Log;
38 
39 public class UserSwitchListenerService extends Service {
40 
41     private static final boolean DEBUG = false;
42     private static final String TAG = "RestrictedProfile";
43 
44     private static final String RESTRICTED_PROFILE_LAUNCHER_ENTRY_ACTIVITY =
45             "com.android.tv.settings.users.RestrictedProfileActivityLauncherEntry";
46     private static final String SHARED_PREFERENCES_NAME = "RestrictedProfileSharedPreferences";
47     private static final String
48             ON_BOOT_USER_ID_PREFERENCE = "UserSwitchOnBootBroadcastReceiver.userId";
49 
50     public static class BootReceiver extends BroadcastReceiver {
51         @Override
onReceive(final Context context, Intent intent)52         public void onReceive(final Context context, Intent intent) {
53 
54             boolean isOwner = UserHandle.myUserId() == UserHandle.USER_OWNER;
55 
56             if (isOwner) {
57                 context.startService(new Intent(context, UserSwitchListenerService.class));
58                 int bootUserId = getBootUser(context);
59                 if (DEBUG) {
60                     Log.d(TAG,
61                             "boot completed, user is " + UserHandle.myUserId()
62                             + " boot user id: "
63                             + bootUserId);
64                 }
65                 if (UserHandle.myUserId() != bootUserId) {
66                     RestrictedProfileActivity.switchUserNow(bootUserId);
67                 }
68             }
69 
70             updateLaunchPoint(context, null != RestrictedProfileActivity.findRestrictedUser(
71                     (UserManager) context.getSystemService(Context.USER_SERVICE)));
72         }
73     }
74 
updateLaunchPoint(Context context, boolean enableLaunchPoint)75     static void updateLaunchPoint(Context context, boolean enableLaunchPoint) {
76         if (DEBUG) {
77             Log.d(TAG, "updating launch point: " + enableLaunchPoint);
78         }
79 
80         PackageManager pm = context.getPackageManager();
81         ComponentName compName = new ComponentName(context,
82                 RESTRICTED_PROFILE_LAUNCHER_ENTRY_ACTIVITY);
83         pm.setComponentEnabledSetting(compName,
84                 enableLaunchPoint ? PackageManager.COMPONENT_ENABLED_STATE_ENABLED
85                         : PackageManager.COMPONENT_ENABLED_STATE_DISABLED,
86                 PackageManager.DONT_KILL_APP);
87     }
88 
setBootUser(Context context, int userId)89     static void setBootUser(Context context, int userId) {
90         SharedPreferences.Editor editor = context.getSharedPreferences(SHARED_PREFERENCES_NAME,
91                 Context.MODE_PRIVATE).edit();
92         editor.putInt(ON_BOOT_USER_ID_PREFERENCE, userId);
93         editor.apply();
94     }
95 
getBootUser(Context context)96     static int getBootUser(Context context) {
97         SharedPreferences prefs = context.getSharedPreferences(SHARED_PREFERENCES_NAME,
98                 Context.MODE_PRIVATE);
99         return prefs.getInt(ON_BOOT_USER_ID_PREFERENCE, UserHandle.USER_OWNER);
100     }
101 
102     @Override
onCreate()103     public void onCreate() {
104         super.onCreate();
105         try {
106             ActivityManagerNative.getDefault().registerUserSwitchObserver(
107                     new IUserSwitchObserver.Stub() {
108                         @Override
109                         public void onUserSwitching(int newUserId, IRemoteCallback reply) {
110                         }
111 
112                         @Override
113                         public void onUserSwitchComplete(int newUserId) throws RemoteException {
114                             if (DEBUG) {
115                                 Log.d(TAG, "user has been foregrounded: " + newUserId);
116                             }
117                             setBootUser(UserSwitchListenerService.this, newUserId);
118                         }
119                     });
120         } catch (RemoteException e) {
121         }
122     }
123 
124     @Override
onStartCommand(Intent intent, int flags, int startId)125     public int onStartCommand(Intent intent, int flags, int startId) {
126         return START_STICKY;
127     }
128 
129     @Override
onBind(Intent intent)130     public IBinder onBind(Intent intent) {
131         return null;
132     }
133 }
134