1 /*
2  * Copyright (C) 2022 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.biometrics.face;
18 
19 import android.app.admin.DevicePolicyManager;
20 import android.content.Context;
21 import android.hardware.biometrics.BiometricAuthenticator;
22 import android.hardware.face.FaceManager;
23 import android.os.UserManager;
24 
25 import com.android.settings.R;
26 import com.android.settings.Settings;
27 import com.android.settings.Utils;
28 import com.android.settings.biometrics.ParentalControlsUtils;
29 import com.android.settingslib.RestrictedLockUtils.EnforcedAdmin;
30 import com.android.settingslib.RestrictedLockUtilsInternal;
31 
32 /**
33  * Utilities for face details shared between Security Settings and Safety Center.
34  */
35 public class FaceStatusUtils {
36 
37     private final int mUserId;
38     private final Context mContext;
39     private final FaceManager mFaceManager;
40 
FaceStatusUtils(Context context, FaceManager faceManager, int userId)41     public FaceStatusUtils(Context context, FaceManager faceManager, int userId) {
42         mContext = context;
43         mFaceManager = faceManager;
44         mUserId = userId;
45     }
46 
47     /**
48      * Returns whether the face settings entity should be shown.
49      */
isAvailable()50     public boolean isAvailable() {
51         return !Utils.isMultipleBiometricsSupported(mContext) && Utils.hasFaceHardware(mContext);
52     }
53 
54     /**
55      * Returns the {@link EnforcedAdmin} if parental consent is required to change face settings.
56      *
57      * @return null if face settings does not require a parental consent.
58      */
getDisablingAdmin()59     public EnforcedAdmin getDisablingAdmin() {
60         return ParentalControlsUtils.parentConsentRequired(
61                 mContext, BiometricAuthenticator.TYPE_FACE);
62     }
63 
64     /**
65      * Returns the title of face settings entity.
66      */
getTitle()67     public String getTitle() {
68         UserManager userManager = mContext.getSystemService(UserManager.class);
69         if (userManager != null && userManager.isProfile()) {
70             return mContext.getString(
71                     Utils.isPrivateProfile(mUserId, mContext)
72                             ? R.string.private_space_face_unlock_title
73                             : R.string.security_settings_face_profile_preference_title);
74         } else {
75             return mContext.getString(R.string.security_settings_face_preference_title);
76         }
77     }
78 
79     /**
80      * Returns the summary of face settings entity.
81      */
getSummary()82     public String getSummary() {
83         if (shouldShowDisabledByAdminStr()) {
84             return mContext.getString(
85                     com.android.settingslib.widget.restricted.R.string.disabled_by_admin);
86         } else {
87             return mContext.getResources().getString(hasEnrolled()
88                 ? R.string.security_settings_face_preference_summary
89                 : R.string.security_settings_face_preference_summary_none);
90         }
91     }
92 
93     /**
94      * Returns the class name of the Settings page corresponding to face settings.
95      */
getSettingsClassName()96     public String getSettingsClassName() {
97         return hasEnrolled() ? Settings.FaceSettingsInternalActivity.class.getName()
98                 : FaceEnrollIntroductionInternal.class.getName();
99     }
100 
101     /**
102      * Returns whether at least one face template has been enrolled.
103      */
hasEnrolled()104     public boolean hasEnrolled() {
105         return mFaceManager.hasEnrolledTemplates(mUserId);
106     }
107 
108     /**
109      * Indicates if the face feature is enabled or disabled by the Device Admin.
110      */
shouldShowDisabledByAdminStr()111     private boolean shouldShowDisabledByAdminStr() {
112         return RestrictedLockUtilsInternal.checkIfKeyguardFeaturesDisabled(
113                 mContext, DevicePolicyManager.KEYGUARD_DISABLE_FACE, mUserId) != null;
114     }
115 }
116