1 /*
2  * Copyright (C) 2021 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.car.settings.enterprise;
18 
19 import android.app.admin.DeviceAdminInfo;
20 import android.app.admin.DevicePolicyManager;
21 import android.car.drivingstate.CarUxRestrictions;
22 import android.content.ComponentName;
23 import android.content.Context;
24 import android.content.pm.PackageManager;
25 import android.content.res.Resources;
26 import android.os.UserManager;
27 
28 import androidx.annotation.Nullable;
29 import androidx.preference.Preference;
30 
31 import com.android.car.settings.common.FragmentController;
32 import com.android.car.settings.common.Logger;
33 import com.android.car.settings.common.PreferenceController;
34 
35 /**
36  * Base class for controllers in the enterprise module.
37  */
38 abstract class BaseEnterprisePreferenceController<P extends Preference>
39         extends PreferenceController<P> {
40 
41     protected final Logger mLogger = new Logger(getClass());
42 
43     protected final DevicePolicyManager mDpm;
44     protected final PackageManager mPm;
45     protected final UserManager mUm;
46 
47     private final boolean mHasFeature;
48 
BaseEnterprisePreferenceController(Context context, String preferenceKey, FragmentController fragmentController, CarUxRestrictions uxRestrictions)49     protected BaseEnterprisePreferenceController(Context context, String preferenceKey,
50             FragmentController fragmentController, CarUxRestrictions uxRestrictions) {
51         super(context, preferenceKey, fragmentController, uxRestrictions);
52 
53         mHasFeature = context.getPackageManager()
54                 .hasSystemFeature(PackageManager.FEATURE_DEVICE_ADMIN);
55 
56         mDpm = context.getSystemService(DevicePolicyManager.class);
57         mPm = context.getPackageManager();
58         mUm = context.getSystemService(UserManager.class);
59     }
60 
61     @Override
getPreferenceType()62     protected Class<P> getPreferenceType() {
63         return (Class<P>) Preference.class;
64     }
65 
66     @Override
getAvailabilityStatus()67     protected int getAvailabilityStatus() {
68         return mHasFeature ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
69     }
70 
isProfileOrDeviceOwner(ComponentName admin)71     final boolean isProfileOrDeviceOwner(ComponentName admin) {
72         return admin.equals(mDpm.getProfileOwner())
73                 || admin.equals(mDpm.getDeviceOwnerComponentOnCallingUser());
74     }
75 
76     @Nullable
getDescription(DeviceAdminInfo deviceAdminInfo)77     protected final CharSequence getDescription(DeviceAdminInfo deviceAdminInfo) {
78         try {
79             return deviceAdminInfo.loadDescription(mPm);
80         } catch (Resources.NotFoundException e) {
81             mLogger.v("No description for "
82                     + deviceAdminInfo.getComponent().flattenToShortString());
83         }
84         return null;
85     }
86 }
87