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 */
16package com.android.settingslib;
17
18import android.content.Context;
19import android.net.wifi.WifiManager;
20import android.os.SystemProperties;
21import android.telephony.CarrierConfigManager;
22
23public class TetherUtil {
24
25    public static boolean setWifiTethering(boolean enable, Context context) {
26        final WifiManager wifiManager =
27                (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
28        return wifiManager.setWifiApEnabled(null, enable);
29    }
30
31    private static boolean isEntitlementCheckRequired(Context context) {
32        final CarrierConfigManager configManager = (CarrierConfigManager) context
33             .getSystemService(Context.CARRIER_CONFIG_SERVICE);
34        return configManager.getConfig().getBoolean(CarrierConfigManager
35             .KEY_REQUIRE_ENTITLEMENT_CHECKS_BOOL);
36    }
37
38    public static boolean isProvisioningNeeded(Context context) {
39        // Keep in sync with other usage of config_mobile_hotspot_provision_app.
40        // ConnectivityManager#enforceTetherChangePermission
41        String[] provisionApp = context.getResources().getStringArray(
42                com.android.internal.R.array.config_mobile_hotspot_provision_app);
43        if (SystemProperties.getBoolean("net.tethering.noprovisioning", false)
44                || provisionApp == null) {
45            return false;
46        }
47        // Check carrier config for entitlement checks
48        if (isEntitlementCheckRequired(context) == false) {
49            return false;
50        }
51        return (provisionApp.length == 2);
52    }
53}
54