| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.android.settingslib; |
| |
| import android.app.ActivityManager; |
| import android.content.ComponentName; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.content.res.Resources; |
| import android.net.ConnectivityManager; |
| import android.net.wifi.WifiManager; |
| import android.os.SystemProperties; |
| import android.os.UserHandle; |
| import android.provider.Settings; |
| |
| public class TetherUtil { |
| |
| // Types of tethering. |
| public static final int TETHERING_INVALID = -1; |
| public static final int TETHERING_WIFI = 0; |
| public static final int TETHERING_USB = 1; |
| public static final int TETHERING_BLUETOOTH = 2; |
| |
| // Extras used for communicating with the TetherService. |
| public static final String EXTRA_ADD_TETHER_TYPE = "extraAddTetherType"; |
| public static final String EXTRA_REM_TETHER_TYPE = "extraRemTetherType"; |
| public static final String EXTRA_SET_ALARM = "extraSetAlarm"; |
| /** |
| * Tells the service to run a provision check now. |
| */ |
| public static final String EXTRA_RUN_PROVISION = "extraRunProvision"; |
| /** |
| * Enables wifi tethering if the provision check is successful. Used by |
| * QS to enable tethering. |
| */ |
| public static final String EXTRA_ENABLE_WIFI_TETHER = "extraEnableWifiTether"; |
| |
| public static ComponentName TETHER_SERVICE = ComponentName.unflattenFromString(Resources |
| .getSystem().getString(com.android.internal.R.string.config_wifi_tether_enable)); |
| |
| public static boolean setWifiTethering(boolean enable, Context context) { |
| final WifiManager wifiManager = |
| (WifiManager) context.getSystemService(Context.WIFI_SERVICE); |
| final ContentResolver cr = context.getContentResolver(); |
| /** |
| * Disable Wifi if enabling tethering |
| */ |
| int wifiState = wifiManager.getWifiState(); |
| if (enable && ((wifiState == WifiManager.WIFI_STATE_ENABLING) || |
| (wifiState == WifiManager.WIFI_STATE_ENABLED))) { |
| wifiManager.setWifiEnabled(false); |
| Settings.Global.putInt(cr, Settings.Global.WIFI_SAVED_STATE, 1); |
| } |
| |
| boolean success = wifiManager.setWifiApEnabled(null, enable); |
| /** |
| * If needed, restore Wifi on tether disable |
| */ |
| if (!enable) { |
| int wifiSavedState = Settings.Global.getInt(cr, Settings.Global.WIFI_SAVED_STATE, 0); |
| if (wifiSavedState == 1) { |
| wifiManager.setWifiEnabled(true); |
| Settings.Global.putInt(cr, Settings.Global.WIFI_SAVED_STATE, 0); |
| } |
| } |
| return success; |
| } |
| |
| public static boolean isWifiTetherEnabled(Context context) { |
| WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE); |
| return wifiManager.getWifiApState() == WifiManager.WIFI_AP_STATE_ENABLED; |
| } |
| |
| public static boolean isProvisioningNeeded(Context context) { |
| // Keep in sync with other usage of config_mobile_hotspot_provision_app. |
| // ConnectivityManager#enforceTetherChangePermission |
| String[] provisionApp = context.getResources().getStringArray( |
| com.android.internal.R.array.config_mobile_hotspot_provision_app); |
| if (SystemProperties.getBoolean("net.tethering.noprovisioning", false) |
| || provisionApp == null) { |
| return false; |
| } |
| return (provisionApp.length == 2); |
| } |
| |
| public static boolean isTetheringSupported(Context context) { |
| final ConnectivityManager cm = |
| (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE); |
| final boolean isSecondaryUser = ActivityManager.getCurrentUser() != UserHandle.USER_OWNER; |
| return !isSecondaryUser && cm.isTetheringSupported(); |
| } |
| |
| } |