1 /*
2  * Copyright (C) 2015 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.settingslib;
17 
18 import android.content.Context;
19 import android.os.SystemProperties;
20 import android.support.annotation.VisibleForTesting;
21 import android.telephony.CarrierConfigManager;
22 
23 public class TetherUtil {
24 
25     @VisibleForTesting
isEntitlementCheckRequired(Context context)26     static boolean isEntitlementCheckRequired(Context context) {
27         final CarrierConfigManager configManager = (CarrierConfigManager) context
28              .getSystemService(Context.CARRIER_CONFIG_SERVICE);
29         if (configManager == null || configManager.getConfig() == null) {
30             // return service default
31             return true;
32         }
33         return configManager.getConfig().getBoolean(CarrierConfigManager
34              .KEY_REQUIRE_ENTITLEMENT_CHECKS_BOOL);
35     }
36 
isProvisioningNeeded(Context context)37     public static boolean isProvisioningNeeded(Context context) {
38         // Keep in sync with other usage of config_mobile_hotspot_provision_app.
39         // ConnectivityManager#enforceTetherChangePermission
40         String[] provisionApp = context.getResources().getStringArray(
41                 com.android.internal.R.array.config_mobile_hotspot_provision_app);
42         if (SystemProperties.getBoolean("net.tethering.noprovisioning", false)
43                 || provisionApp == null) {
44             return false;
45         }
46         // Check carrier config for entitlement checks
47         if (isEntitlementCheckRequired(context) == false) {
48             return false;
49         }
50         return (provisionApp.length == 2);
51     }
52 }
53