1 /*
2  * Copyright (C) 2020 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.server.tv;
17 
18 import static org.hamcrest.Matchers.not;
19 import static org.junit.Assert.assertFalse;
20 import static org.junit.Assert.assertTrue;
21 import static org.mockito.ArgumentMatchers.anyInt;
22 import static org.mockito.ArgumentMatchers.anyString;
23 import static org.mockito.Mockito.reset;
24 import static org.mockito.Mockito.when;
25 import static org.mockito.hamcrest.MockitoHamcrest.argThat;
26 
27 import android.Manifest;
28 import android.content.Context;
29 import android.content.pm.PackageManager;
30 import android.content.pm.ServiceInfo;
31 import android.content.res.Resources;
32 import android.os.Handler;
33 import android.os.Looper;
34 
35 import androidx.test.filters.SmallTest;
36 
37 import org.junit.Before;
38 import org.junit.Test;
39 import org.mockito.Mock;
40 import org.mockito.MockitoAnnotations;
41 
42 @SmallTest
43 public class TvRemoteProviderWatcherTest {
44     private static final String TV_REMOTE_SERVICE_PACKAGE_NAME =
45             "com.google.android.tv.remote.service";
46 
47     @Mock
48     Context mMockContext;
49     @Mock
50     PackageManager mMockPackageManager;
51     @Mock
52     Resources mMockResources;
53 
54     private TvRemoteProviderWatcher mTvRemoteProviderWatcher;
55 
56     @Before
setUp()57     public void setUp() throws Exception {
58         MockitoAnnotations.initMocks(this);
59 
60         if (Looper.myLooper() == null) {
61             Looper.prepare();
62         }
63 
64         when(mMockContext.getPackageManager()).thenReturn(mMockPackageManager);
65         when(mMockContext.getResources()).thenReturn(mMockResources);
66 
67         when(mMockResources.getString(com.android.internal.R.string.config_tvRemoteServicePackage))
68                 .thenReturn(TV_REMOTE_SERVICE_PACKAGE_NAME);
69 
70 
71         when(mMockPackageManager.checkPermission(
72                 argThat(not(Manifest.permission.TV_VIRTUAL_REMOTE_CONTROLLER)),
73                 anyString())).thenReturn(
74                 PackageManager.PERMISSION_DENIED);
75 
76         when(mMockPackageManager.checkPermission(
77                 anyString(),
78                 argThat(not(TV_REMOTE_SERVICE_PACKAGE_NAME)))).thenReturn(
79                 PackageManager.PERMISSION_DENIED);
80 
81         when(mMockPackageManager.checkPermission(Manifest.permission.TV_VIRTUAL_REMOTE_CONTROLLER,
82                 TV_REMOTE_SERVICE_PACKAGE_NAME)).thenReturn(PackageManager.PERMISSION_GRANTED);
83 
84         mTvRemoteProviderWatcher = new TvRemoteProviderWatcher(mMockContext, new Object());
85     }
86 
87     @Test
acceptsValidCsvPackageName()88     public void acceptsValidCsvPackageName() {
89         // Test intentionally includes empty spacing for a more complex test
90         when(mMockResources.getString(com.android.internal.R.string.config_tvRemoteServicePackage))
91             .thenReturn(",,foo,  " + TV_REMOTE_SERVICE_PACKAGE_NAME + ",bar, baz,,");
92 
93         // Re-create the object since package name is loaded in the constructor
94         TvRemoteProviderWatcher watcher =
95                 new TvRemoteProviderWatcher(
96                         mMockContext, new Object(), new Handler(Looper.getMainLooper()));
97         assertTrue(watcher.verifyServiceTrusted(createTvServiceInfo()));
98     }
99 
100     @Test
rejectsInvalidCsvPackageName()101     public void rejectsInvalidCsvPackageName() {
102         // Checks include empty strings to validate that processing as well
103         when(mMockResources.getString(com.android.internal.R.string.config_tvRemoteServicePackage))
104             .thenReturn(",,foo,,  ,bar,   baz,,");
105 
106         // Re-create the object since package name is loaded in the constructor
107         TvRemoteProviderWatcher watcher =
108                 new TvRemoteProviderWatcher(
109                         mMockContext, new Object(), new Handler(Looper.getMainLooper()));
110         assertFalse(watcher.verifyServiceTrusted(createTvServiceInfo()));
111     }
112 
113     @Test
tvServiceIsTrusted()114     public void tvServiceIsTrusted() {
115         assertTrue(mTvRemoteProviderWatcher.verifyServiceTrusted(createTvServiceInfo()));
116     }
117 
118     @Test
permissionIsRequired()119     public void permissionIsRequired() {
120         ServiceInfo serviceInfo = createTvServiceInfo();
121         serviceInfo.permission = null;
122 
123         assertFalse(mTvRemoteProviderWatcher.verifyServiceTrusted(serviceInfo));
124     }
125 
126     @Test
permissionMustBeBindRemote()127     public void permissionMustBeBindRemote() {
128         ServiceInfo serviceInfo = createTvServiceInfo();
129         serviceInfo.permission = Manifest.permission.BIND_TV_INPUT;
130         assertFalse(mTvRemoteProviderWatcher.verifyServiceTrusted(serviceInfo));
131     }
132 
133     @Test
packageNameMustMatch()134     public void packageNameMustMatch() {
135         ServiceInfo serviceInfo = createTvServiceInfo();
136         serviceInfo.packageName = "some.random.package";
137         assertFalse(mTvRemoteProviderWatcher.verifyServiceTrusted(serviceInfo));
138     }
139 
140     @Test
packageManagerPermissionIsRequired()141     public void packageManagerPermissionIsRequired() {
142         reset(mMockPackageManager);
143         when(mMockPackageManager.checkPermission(anyString(), anyString())).thenReturn(
144                 PackageManager.PERMISSION_DENIED);
145 
146         assertFalse(mTvRemoteProviderWatcher.verifyServiceTrusted(createTvServiceInfo()));
147     }
148 
149     @Test
whitelistingPackageNameIsRequired()150     public void whitelistingPackageNameIsRequired() {
151         reset(mMockResources);
152         when(mMockResources.getString(anyInt())).thenReturn("");
153         TvRemoteProviderWatcher watcher =
154                 new TvRemoteProviderWatcher(
155                         mMockContext, new Object(), new Handler(Looper.getMainLooper()));
156         assertFalse(watcher.verifyServiceTrusted(createTvServiceInfo()));
157     }
158 
createTvServiceInfo()159     private ServiceInfo createTvServiceInfo() {
160         ServiceInfo serviceInfo = new ServiceInfo();
161 
162         serviceInfo.name = "ATV Remote Service";
163         serviceInfo.packageName = TV_REMOTE_SERVICE_PACKAGE_NAME;
164         serviceInfo.permission = Manifest.permission.BIND_TV_REMOTE_SERVICE;
165 
166         return serviceInfo;
167     }
168 }
169