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 package com.android.cts.deviceadmin;
17 
18 import android.app.admin.DevicePolicyManager;
19 import android.test.MoreAsserts;
20 
21 /**
22  * Tests that:
23  * - need to be run as device admin (as opposed to device owner) and
24  * - require resetting the password at the end.
25  *
26  * Note: when adding a new method, make sure to add a corresponding method in
27  * BaseDeviceAdminHostSideTest.
28  */
29 public class DeviceAdminPasswordTest extends BaseDeviceAdminTest {
30 
31     @Override
setUp()32     protected void setUp() throws Exception {
33         super.setUp();
34 
35         assertNotDeviceOwner();
36     }
37 
checkSetPassword_nycRestrictions_success()38     private void checkSetPassword_nycRestrictions_success() {
39         assertTrue(dpm.resetPassword("1234", /* flags= */ 0));
40     }
41 
checkSetPassword_nycRestrictions_failure()42     private void checkSetPassword_nycRestrictions_failure() {
43         try {
44             assertFalse(dpm.resetPassword("1234", /* flags= */ 0));
45             if (shouldResetPasswordThrow()) {
46                 fail("Didn't throw");
47             }
48         } catch (SecurityException e) {
49             if (!shouldResetPasswordThrow()) {
50                 fail("Shouldn't throw");
51             }
52             MoreAsserts.assertContainsRegex("Admin cannot change current password", e.getMessage());
53         }
54     }
55 
checkClearPassword_nycRestrictions_failure()56     private void checkClearPassword_nycRestrictions_failure() {
57         try {
58             assertFalse(dpm.resetPassword("", /* flags= */ 0));
59             if (shouldResetPasswordThrow()) {
60                 fail("Didn't throw");
61             }
62         } catch (SecurityException e) {
63             if (!shouldResetPasswordThrow()) {
64                 fail("Shouldn't throw");
65             }
66             MoreAsserts.assertContainsRegex("Cannot call with null password", e.getMessage());
67         }
68     }
69 
assertHasPassword()70     private void assertHasPassword() {
71         dpm.setPasswordMinimumLength(mAdminComponent, 1);
72         try {
73             assertTrue("No password set", dpm.isActivePasswordSufficient());
74         } finally {
75             dpm.setPasswordMinimumLength(mAdminComponent, 0);
76         }
77     }
78 
assertNoPassword()79     private void assertNoPassword() {
80         dpm.setPasswordMinimumLength(mAdminComponent, 1);
81         try {
82             assertFalse("Password is set", dpm.isActivePasswordSufficient());
83         } finally {
84             dpm.setPasswordMinimumLength(mAdminComponent, 0);
85         }
86     }
87 
88     /**
89      * Tests for the new restrictions on {@link DevicePolicyManager#resetPassword} introduced
90      * on NYC.
91      */
testResetPassword_nycRestrictions()92     public void testResetPassword_nycRestrictions() throws Exception {
93 
94         assertNoPassword();
95 
96         // Can't clear the password, even if there's no password set currently.
97         checkClearPassword_nycRestrictions_failure();
98 
99         assertNoPassword();
100 
101         // No password -> setting one is okay.
102         checkSetPassword_nycRestrictions_success();
103 
104         assertHasPassword();
105 
106         // But once set, DA can't change the password.
107         checkSetPassword_nycRestrictions_failure();
108 
109         assertHasPassword();
110 
111         // Still can't clear the password.
112         checkClearPassword_nycRestrictions_failure();
113 
114         assertHasPassword();
115     }
116 }
117