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 package com.android.settings.biometrics.combination;
17 
18 import static android.provider.Settings.Secure.BIOMETRIC_APP_ENABLED;
19 
20 import android.app.admin.DevicePolicyManager;
21 import android.content.Context;
22 import android.hardware.face.FaceManager;
23 import android.hardware.fingerprint.FingerprintManager;
24 import android.provider.Settings;
25 
26 import com.android.settings.Utils;
27 import com.android.settings.core.TogglePreferenceController;
28 import com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
29 import com.android.settingslib.RestrictedLockUtilsInternal;
30 
31 /**
32  * Preference controller that controls whether the biometrics authentication to be used in apps.
33  */
34 public class BiometricSettingsAppPreferenceController extends TogglePreferenceController {
35     private static final int ON = 1;
36     private static final int OFF = 0;
37     private static final int DEFAULT = ON;
38 
39     private int mUserId;
40     private FaceManager mFaceManager;
41     private FingerprintManager mFingerprintManager;
42 
BiometricSettingsAppPreferenceController(Context context, String key)43     public BiometricSettingsAppPreferenceController(Context context, String key) {
44         super(context, key);
45         mFaceManager = Utils.getFaceManagerOrNull(context);
46         mFingerprintManager = Utils.getFingerprintManagerOrNull(context);
47     }
48 
getRestrictingAdmin()49     protected EnforcedAdmin getRestrictingAdmin() {
50         return RestrictedLockUtilsInternal.checkIfKeyguardFeaturesDisabled(mContext,
51                 DevicePolicyManager.KEYGUARD_DISABLE_BIOMETRICS, mUserId);
52     }
53 
setUserId(int userId)54     public void setUserId(int userId) {
55         mUserId = userId;
56     }
57 
58     @Override
isChecked()59     public boolean isChecked() {
60         return Settings.Secure.getIntForUser(mContext.getContentResolver(), BIOMETRIC_APP_ENABLED,
61                 DEFAULT, mUserId) == ON;
62     }
63 
64     @Override
setChecked(boolean isChecked)65     public boolean setChecked(boolean isChecked) {
66         return Settings.Secure.putIntForUser(mContext.getContentResolver(), BIOMETRIC_APP_ENABLED,
67                 isChecked ? ON : OFF, mUserId);
68     }
69 
70     @Override
getAvailabilityStatus()71     public int getAvailabilityStatus() {
72         if (!Utils.isMultipleBiometricsSupported(mContext)) {
73             return UNSUPPORTED_ON_DEVICE;
74         }
75         if (mFaceManager == null || mFingerprintManager == null) {
76             return AVAILABLE_UNSEARCHABLE;
77         }
78         // This preference will be available only if the user has registered either face auth
79         // or fingerprint.
80         final boolean hasFaceEnrolledUser = mFaceManager.hasEnrolledTemplates(mUserId);
81         final boolean hasFingerprintEnrolledUser =
82                 mFingerprintManager.hasEnrolledTemplates(mUserId);
83         if (hasFaceEnrolledUser || hasFingerprintEnrolledUser) {
84             return AVAILABLE;
85         } else {
86             return AVAILABLE_UNSEARCHABLE;
87         }
88     }
89 
90     @Override
isSliceable()91     public final boolean isSliceable() {
92         return false;
93     }
94 
95     @Override
getSliceHighlightMenuRes()96     public int getSliceHighlightMenuRes() {
97         // not needed since it's not sliceable
98         return NO_RES;
99     }
100 }
101