1 /*
2  * Copyright (C) 2023 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 android.os.test;
18 
19 import static android.permission.PermissionManager.PERMISSION_GRANTED;
20 import static android.permission.PermissionManager.PERMISSION_HARD_DENIED;
21 
22 import android.annotation.NonNull;
23 import android.content.AttributionSource;
24 import android.os.PermissionEnforcer;
25 
26 import java.util.HashSet;
27 import java.util.Set;
28 
29 /**
30  * Fake for {@link PermissionEnforcer}. Useful for tests wanting to mock the
31  * permission checks of an AIDL service. FakePermissionEnforcer may be passed
32  * to the constructor of the AIDL-generated Stub class.
33  *
34  */
35 public class FakePermissionEnforcer extends PermissionEnforcer {
36     private Set<String> mGranted;
37 
FakePermissionEnforcer()38     public FakePermissionEnforcer() {
39         mGranted = new HashSet();
40     }
41 
grant(String permission)42     public void grant(String permission) {
43         mGranted.add(permission);
44     }
45 
revoke(String permission)46     public void revoke(String permission) {
47         mGranted.remove(permission);
48     }
49 
granted(String permission)50     private boolean granted(String permission) {
51         return mGranted.contains(permission);
52     }
53 
54     @Override
checkPermission(@onNull String permission, @NonNull AttributionSource source)55     protected int checkPermission(@NonNull String permission,
56               @NonNull AttributionSource source) {
57         return granted(permission) ? PERMISSION_GRANTED : PERMISSION_HARD_DENIED;
58     }
59 
60     @Override
checkPermission(@onNull String permission, int pid, int uid)61     protected int checkPermission(@NonNull String permission, int pid, int uid) {
62         return granted(permission) ? PERMISSION_GRANTED : PERMISSION_HARD_DENIED;
63     }
64 }
65