1 /*
2  * Copyright (C) 2017 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.settings.development;
18 
19 import android.content.Context;
20 import android.os.UserHandle;
21 import android.os.UserManager;
22 import android.service.persistentdata.PersistentDataBlockManager;
23 import android.util.Log;
24 
25 public class OemUnlockUtils {
26     private static final String TAG = "OemUnlockUtils";
27 
28     /**
29      * Returns whether or not this device is able to be OEM unlocked.
30      */
isOemUnlockEnabled(Context context)31     static boolean isOemUnlockEnabled(Context context) {
32         PersistentDataBlockManager manager = (PersistentDataBlockManager)
33                 context.getSystemService(Context.PERSISTENT_DATA_BLOCK_SERVICE);
34         return manager.getOemUnlockEnabled();
35     }
36 
37     /**
38      * Allows enabling or disabling OEM unlock on this device. OEM unlocked
39      * devices allow users to flash other OSes to them.
40      */
setOemUnlockEnabled(Context context, boolean enabled)41     static void setOemUnlockEnabled(Context context, boolean enabled) {
42         try {
43             PersistentDataBlockManager manager = (PersistentDataBlockManager)
44                     context.getSystemService(Context.PERSISTENT_DATA_BLOCK_SERVICE);
45             manager.setOemUnlockEnabled(enabled);
46         } catch (SecurityException e) {
47             Log.e(TAG, "Fail to set oem unlock.", e);
48         }
49     }
50 
51     /**
52      * Returns {@code true} if OEM unlock is disallowed by user restriction
53      * {@link UserManager#DISALLOW_FACTORY_RESET} or {@link UserManager#DISALLOW_OEM_UNLOCK}.
54      * Otherwise, returns {@code false}.
55      */
isOemUnlockAllowed(UserManager um)56     static boolean isOemUnlockAllowed(UserManager um) {
57         final UserHandle userHandle = UserHandle.of(UserHandle.myUserId());
58         return !(um.hasBaseUserRestriction(UserManager.DISALLOW_OEM_UNLOCK, userHandle)
59                 || um.hasBaseUserRestriction(UserManager.DISALLOW_FACTORY_RESET, userHandle));
60     }
61 }
62