1 /*
2  * Copyright (C) 2016 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.users;
18 
19 import android.app.admin.DevicePolicyManager;
20 import android.content.Context;
21 import android.content.pm.UserInfo;
22 import android.os.UserHandle;
23 import android.os.UserManager;
24 import android.provider.Settings;
25 
26 import com.android.settings.R;
27 import com.android.settings.Utils;
28 import com.android.settingslib.RestrictedLockUtils;
29 import com.android.settingslib.RestrictedLockUtilsInternal;
30 
31 public class UserCapabilities {
32     boolean mEnabled = true;
33     boolean mCanAddUser = true;
34     boolean mCanAddRestrictedProfile;
35     boolean mIsMain;
36     boolean mIsAdmin;
37     boolean mIsGuest;
38     boolean mIsEphemeral;
39     boolean mUserSwitcherEnabled;
40     boolean mCanAddGuest;
41     boolean mDisallowAddUser;
42     boolean mDisallowAddUserSetByAdmin;
43     boolean mDisallowSwitchUser;
44     RestrictedLockUtils.EnforcedAdmin mEnforcedAdmin;
45 
UserCapabilities()46     private UserCapabilities() {
47     }
48 
create(Context context)49     public static UserCapabilities create(Context context) {
50         UserManager userManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
51         UserCapabilities caps = new UserCapabilities();
52 
53         if (!UserManager.supportsMultipleUsers() || Utils.isMonkeyRunning()) {
54             caps.mEnabled = false;
55             return caps;
56         }
57 
58         final UserInfo myUserInfo = userManager.getUserInfo(UserHandle.myUserId());
59         caps.mIsGuest = myUserInfo.isGuest();
60         caps.mIsAdmin = myUserInfo.isAdmin();
61         caps.mIsMain = myUserInfo.isMain();
62         caps.mIsEphemeral = myUserInfo.isEphemeral();
63         DevicePolicyManager dpm = (DevicePolicyManager) context.getSystemService(
64                 Context.DEVICE_POLICY_SERVICE);
65 
66         boolean offerRestricted =
67                 context.getResources().getBoolean(R.bool.config_offer_restricted_profiles);
68         caps.mCanAddRestrictedProfile =
69                 offerRestricted && !dpm.isDeviceManaged() && userManager.isUserTypeEnabled(
70                         UserManager.USER_TYPE_FULL_RESTRICTED);
71 
72         caps.updateAddUserCapabilities(context);
73         return caps;
74     }
75 
updateAddUserCapabilities(Context context)76     public void updateAddUserCapabilities(Context context) {
77         final UserManager userManager =
78                 (UserManager) context.getSystemService(Context.USER_SERVICE);
79         mEnforcedAdmin = RestrictedLockUtilsInternal.checkIfRestrictionEnforced(context,
80                 UserManager.DISALLOW_ADD_USER, UserHandle.myUserId());
81         final boolean hasBaseUserRestriction = RestrictedLockUtilsInternal.hasBaseUserRestriction(
82                 context, UserManager.DISALLOW_ADD_USER, UserHandle.myUserId());
83         mDisallowAddUserSetByAdmin = mEnforcedAdmin != null && !hasBaseUserRestriction;
84         mDisallowAddUser = (mEnforcedAdmin != null || hasBaseUserRestriction);
85         mUserSwitcherEnabled = userManager.isUserSwitcherEnabled();
86         mCanAddUser = true;
87         if (!mIsAdmin
88                 || UserManager.getMaxSupportedUsers() < 2
89                 || !UserManager.supportsMultipleUsers()
90                 || mDisallowAddUser
91                 || (!userManager.isUserTypeEnabled(UserManager.USER_TYPE_FULL_SECONDARY)
92                     && !mCanAddRestrictedProfile)) {
93             mCanAddUser = false;
94         }
95 
96         final boolean canAddUsersWhenLocked = mIsAdmin || Settings.Global.getInt(
97                 context.getContentResolver(), Settings.Global.ADD_USERS_WHEN_LOCKED, 0) == 1;
98         mCanAddGuest = !mIsGuest && !mDisallowAddUser && canAddUsersWhenLocked
99                 && userManager.isUserTypeEnabled(UserManager.USER_TYPE_FULL_GUEST);
100 
101         mDisallowSwitchUser = userManager.hasUserRestriction(UserManager.DISALLOW_USER_SWITCH);
102     }
103 
isAdmin()104     public boolean isAdmin() {
105         return mIsAdmin;
106     }
107 
disallowAddUser()108     public boolean disallowAddUser() {
109         return mDisallowAddUser;
110     }
111 
disallowAddUserSetByAdmin()112     public boolean disallowAddUserSetByAdmin() {
113         return mDisallowAddUserSetByAdmin;
114     }
115 
getEnforcedAdmin()116     public RestrictedLockUtils.EnforcedAdmin getEnforcedAdmin() {
117         return mEnforcedAdmin;
118     }
119 
120 
121     @Override
toString()122     public String toString() {
123         return "UserCapabilities{" +
124                 "mEnabled=" + mEnabled +
125                 ", mCanAddUser=" + mCanAddUser +
126                 ", mCanAddRestrictedProfile=" + mCanAddRestrictedProfile +
127                 ", mIsAdmin=" + mIsAdmin +
128                 ", mIsGuest=" + mIsGuest +
129                 ", mCanAddGuest=" + mCanAddGuest +
130                 ", mDisallowAddUser=" + mDisallowAddUser +
131                 ", mEnforcedAdmin=" + mEnforcedAdmin +
132                 ", mDisallowSwitchUser=" + mDisallowSwitchUser +
133                 ", mDisallowAddUserSetByAdmin=" + mDisallowAddUserSetByAdmin +
134                 ", mUserSwitcherEnabled=" + mUserSwitcherEnabled +
135                 '}';
136     }
137 }
138