1 /*
2  * Copyright (C) 2019 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.server.locksettings.recoverablekeystore.storage;
18 
19 import static org.mockito.ArgumentMatchers.eq;
20 import static org.mockito.Mockito.times;
21 import static org.mockito.Mockito.verify;
22 import static org.mockito.Mockito.when;
23 
24 import android.content.Context;
25 import android.os.UserHandle;
26 import android.os.UserManager;
27 
28 import androidx.test.InstrumentationRegistry;
29 import androidx.test.filters.SmallTest;
30 import androidx.test.runner.AndroidJUnit4;
31 
32 import org.junit.Before;
33 import org.junit.Test;
34 import org.junit.runner.RunWith;
35 import org.mockito.Mock;
36 import org.mockito.MockitoAnnotations;
37 
38 import java.util.ArrayList;
39 import java.util.HashMap;
40 import java.util.List;
41 import java.util.Map;
42 
43 @SmallTest
44 @RunWith(AndroidJUnit4.class)
45 public class CleanupManagerTest {
46     private static final int USER_ID = 10;
47     private static final int USER_ID_2 = 20;
48     private static final int UID = 1234;
49     private static final long USER_SERIAL_NUMBER = 101L;
50     private static final long USER_SERIAL_NUMBER_2 = 202L;
51 
52     private Context mContext;
53     private CleanupManager mManager;
54 
55     @Mock private RecoverableKeyStoreDb mDatabase;
56     @Mock private RecoverySnapshotStorage mRecoverySnapshotStorage;
57     @Mock private UserManager mUserManager;
58     @Mock private ApplicationKeyStorage mApplicationKeyStorage;
59 
60     @Before
setUp()61     public void setUp() throws Exception {
62         MockitoAnnotations.initMocks(this);
63         mContext = InstrumentationRegistry.getTargetContext();
64         mManager = new CleanupManager(mContext, mRecoverySnapshotStorage, mDatabase, mUserManager,
65                 mApplicationKeyStorage);
66     }
67 
68     @Test
registerRecoveryAgent_unknownUser_storesInDb()69     public void registerRecoveryAgent_unknownUser_storesInDb() throws Exception {
70         when(mDatabase.getUserSerialNumbers()).thenReturn(new HashMap<>());
71         when(mUserManager.getSerialNumberForUser(eq(UserHandle.of(USER_ID))))
72                 .thenReturn(USER_SERIAL_NUMBER);
73         when(mUserManager.getSerialNumberForUser(eq(UserHandle.of(USER_ID_2))))
74                 .thenReturn(USER_SERIAL_NUMBER_2);
75 
76         mManager.registerRecoveryAgent(USER_ID, UID);
77         mManager.registerRecoveryAgent(USER_ID_2, UID);
78 
79         verify(mDatabase).setUserSerialNumber(USER_ID, USER_SERIAL_NUMBER);
80         verify(mDatabase).setUserSerialNumber(USER_ID_2, USER_SERIAL_NUMBER_2);
81 
82     }
83 
84     @Test
registerRecoveryAgent_registersSameUser_doesntChangeDb()85     public void registerRecoveryAgent_registersSameUser_doesntChangeDb() throws Exception {
86         when(mDatabase.getUserSerialNumbers()).thenReturn(new HashMap<>());
87         when(mUserManager.getSerialNumberForUser(eq(UserHandle.of(USER_ID))))
88                 .thenReturn(USER_SERIAL_NUMBER);
89 
90         mManager.registerRecoveryAgent(USER_ID, UID);
91         mManager.registerRecoveryAgent(USER_ID, UID); // ignored.
92 
93         verify(mDatabase, times(1)).setUserSerialNumber(USER_ID, USER_SERIAL_NUMBER);
94     }
95 
96     @Test
verifyKnownUsers_newSerialNumber_deletesData()97     public void verifyKnownUsers_newSerialNumber_deletesData() throws Exception {
98         Map knownSerialNumbers = new HashMap<>();
99         knownSerialNumbers.put(USER_ID, USER_SERIAL_NUMBER);
100         when(mDatabase.getUserSerialNumbers()).thenReturn(knownSerialNumbers);
101         List<Integer> recoveryAgents = new ArrayList<>();
102         recoveryAgents.add(UID);
103         when(mDatabase.getRecoveryAgents(USER_ID)).thenReturn(recoveryAgents);
104 
105         when(mUserManager.getSerialNumberForUser(eq(UserHandle.of(USER_ID))))
106                 .thenReturn(USER_SERIAL_NUMBER_2); // new value
107 
108 
109         mManager.verifyKnownUsers();
110 
111         verify(mDatabase).removeUserFromAllTables(USER_ID);
112         verify(mDatabase).setUserSerialNumber(USER_ID, USER_SERIAL_NUMBER_2);
113         verify(mRecoverySnapshotStorage).remove(UID);
114     }
115 }
116 
117