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.server.wifi.util;
18 
19 import android.Manifest;
20 import android.app.ActivityManager;
21 import android.content.Context;
22 
23 /**
24  * A wifi permissions dependency class to wrap around external
25  * calls to static methods that enable testing.
26  */
27 public class WifiPermissionsWrapper {
28     private static final String TAG = "WifiPermissionsWrapper";
29     private final Context mContext;
30 
WifiPermissionsWrapper(Context context)31     public WifiPermissionsWrapper(Context context) {
32         mContext = context;
33     }
34 
getCurrentUser()35     public int getCurrentUser() {
36         return ActivityManager.getCurrentUser();
37     }
38 
39     /**
40      * Determine if a UID has a permission.
41      * @param permissionType permission string
42      * @param uid to get permission for
43      * @return Permissions setting
44      */
getUidPermission(String permissionType, int uid)45     public int getUidPermission(String permissionType, int uid) {
46         // We don't care about pid, pass in -1
47         return mContext.checkPermission(permissionType, -1, uid);
48     }
49 
50     /**
51      * Determines if the caller has the override wifi config permission.
52      *
53      * @param uid to check the permission for
54      * @return int representation of success or denied
55      */
getOverrideWifiConfigPermission(int uid)56     public int getOverrideWifiConfigPermission(int uid) {
57         return getUidPermission(android.Manifest.permission.OVERRIDE_WIFI_CONFIG, uid);
58     }
59 
60     /**
61      * Determines if the caller has local mac address permission.
62      *
63      * @param uid to check the permission for
64      * @return int representation of success or denied
65      */
getLocalMacAddressPermission(int uid)66     public int getLocalMacAddressPermission(int uid) {
67         return getUidPermission(Manifest.permission.LOCAL_MAC_ADDRESS, uid);
68     }
69 }
70