1 /*
2  * Copyright 2015, 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.managedprovisioning.task;
18 
19 import android.content.Context;
20 import android.content.pm.UserInfo;
21 import android.os.UserHandle;
22 import android.os.UserManager;
23 
24 import com.android.internal.annotations.VisibleForTesting;
25 import com.android.managedprovisioning.analytics.MetricsWriterFactory;
26 import com.android.managedprovisioning.analytics.ProvisioningAnalyticsTracker;
27 import com.android.managedprovisioning.common.ManagedProvisioningSharedPreferences;
28 import com.android.managedprovisioning.common.ProvisionLogger;
29 import com.android.managedprovisioning.common.SettingsFacade;
30 import com.android.managedprovisioning.model.ProvisioningParams;
31 
32 /**
33  * Disables user addition for all users on the device.
34  */
35 public class DisallowAddUserTask extends AbstractProvisioningTask {
36     private final boolean mIsHeadlessSystemUserMode;
37     private final UserManager mUserManager;
38 
DisallowAddUserTask( Context context, ProvisioningParams params, Callback callback)39     public DisallowAddUserTask(
40             Context context,
41             ProvisioningParams params,
42             Callback callback) {
43         this(UserManager.isHeadlessSystemUserMode(), context, params, callback,
44                 new ProvisioningAnalyticsTracker(
45                         MetricsWriterFactory.getMetricsWriter(context, new SettingsFacade()),
46                         new ManagedProvisioningSharedPreferences(context)));
47     }
48 
49     @VisibleForTesting
DisallowAddUserTask(boolean headlessSystemUser, Context context, ProvisioningParams params, Callback callback, ProvisioningAnalyticsTracker provisioningAnalyticsTracker)50     public DisallowAddUserTask(boolean headlessSystemUser,
51             Context context,
52             ProvisioningParams params,
53             Callback callback,
54             ProvisioningAnalyticsTracker provisioningAnalyticsTracker) {
55         super(context, params, callback, provisioningAnalyticsTracker);
56         mIsHeadlessSystemUserMode = headlessSystemUser;
57         mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
58     }
59 
60     @Override
run(int userId)61     public void run(int userId) {
62         ProvisionLogger.logi("Running as user " + userId
63                 + (mIsHeadlessSystemUserMode ? " on headless system user mode" : ""));
64         if (mIsHeadlessSystemUserMode) {
65             if (userId != UserHandle.USER_SYSTEM) {
66                 // It shouldn't happen, but it doesn't hurt to log...
67                 ProvisionLogger.loge("App NOT running as system user on headless system user mode");
68             }
69             ProvisionLogger.logi("Not setting DISALLOW_ADD_USER on headless system user mode.");
70             success();
71             return;
72         }
73 
74         for (UserInfo userInfo : mUserManager.getUsers()) {
75             UserHandle userHandle = userInfo.getUserHandle();
76             if (!mUserManager.hasUserRestriction(UserManager.DISALLOW_ADD_USER, userHandle)) {
77                 mUserManager.setUserRestriction(UserManager.DISALLOW_ADD_USER, true, userHandle);
78                 ProvisionLogger.logi("DISALLOW_ADD_USER restriction set on user: " + userInfo.id);
79             }
80         }
81         success();
82     }
83 
84 }
85