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      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 android.system.helpers;
     18 
     19 import android.app.DownloadManager;
     20 import android.bluetooth.BluetoothAdapter;
     21 import android.content.Context;
     22 import android.net.ConnectivityManager;
     23 import android.net.Network;
     24 import android.net.NetworkInfo;
     25 import android.net.wifi.WifiInfo;
     26 import android.net.wifi.WifiManager;
     27 import android.support.test.InstrumentationRegistry;
     28 import android.system.helpers.CommandsHelper;
     29 import android.telecom.TelecomManager;
     30 import android.telephony.TelephonyManager;
     31 import android.util.Log;
     32 import java.io.IOException;
     33 import java.net.HttpURLConnection;
     34 import java.net.URL;
     35 import junit.framework.Assert;
     36 
     37 /**
     38  * Implement common helper methods for connectivity.
     39  */
     40 public class ConnectivityHelper {
     41     private static final String TAG = ConnectivityHelper.class.getSimpleName();
     42     private final static String DEFAULT_PING_SITE = "http://www.google.com";
     43 
     44     public static final int TIMEOUT = 1000;
     45     private static ConnectivityHelper sInstance = null;
     46     private Context mContext = null;
     47     private CommandsHelper mCommandsHelper = null;
     48 
     49     public ConnectivityHelper() {
     50         mContext = InstrumentationRegistry.getTargetContext();
     51         mCommandsHelper = CommandsHelper.getInstance();
     52     }
     53 
     54     public static ConnectivityHelper getInstance() {
     55         if (sInstance == null) {
     56             sInstance = new ConnectivityHelper();
     57         }
     58         return sInstance;
     59     }
     60 
     61     public TelecomManager getTelecomManager() {
     62         return (TelecomManager) mContext.getSystemService(Context.TELECOM_SERVICE);
     63     }
     64 
     65     public WifiManager getWifiManager() {
     66         return (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);
     67     }
     68 
     69     public ConnectivityManager getConnectivityManager() {
     70         return (ConnectivityManager) (ConnectivityManager) mContext
     71                 .getSystemService(Context.CONNECTIVITY_SERVICE);
     72     }
     73 
     74     public DownloadManager getDownloadManager() {
     75         return (DownloadManager) (DownloadManager) mContext
     76                 .getSystemService(Context.DOWNLOAD_SERVICE);
     77     }
     78 
     79     public BluetoothAdapter getBluetoothAdapter() {
     80         return BluetoothAdapter.getDefaultAdapter();
     81     }
     82 
     83    /**
     84      * Checks if device connection is active either through wifi or mobile data by sending an HTTP
     85      * request, check for HTTP_OK
     86      */
     87     public boolean isConnected() throws InterruptedException {
     88         int counter = 7;
     89         long TIMEOUT_MS = TIMEOUT;
     90         HttpURLConnection conn = null;
     91         while (--counter > 0) {
     92             try{
     93                 URL url = new URL(DEFAULT_PING_SITE);
     94                 conn = (HttpURLConnection) url.openConnection();
     95                 conn.setRequestMethod("GET");
     96                 conn.setConnectTimeout(TIMEOUT * 60); // 1 minute
     97                 conn.setReadTimeout(TIMEOUT * 60); // 1 minute
     98                 Log.i(TAG, "connection response code is " + conn.getResponseCode());
     99                 Log.i(TAG, " counter = " + counter);
    100                 return true;
    101             } catch (IOException ex) {
    102                 // Wifi being flaky in the lab, test retries 10 times to connect to google.com
    103                 // as IOException is throws connection isn't made and response stream is null
    104                 // so for retrying purpose, exception hasn't been rethrown
    105                 Log.i(TAG, ex.getMessage());
    106             } finally {
    107                 if (conn != null) {
    108                     conn.disconnect();
    109                 }
    110             }
    111             Thread.sleep(TIMEOUT_MS);
    112             TIMEOUT_MS = 2 * TIMEOUT_MS;
    113         }
    114         Log.i(TAG, " counter = " + counter);
    115         return false;
    116     }
    117 
    118     /**
    119      * Disconnects and disables network
    120      * @return true/false
    121      */
    122     public int disconnectWifi() {
    123         Assert.assertTrue("Wifi not disconnected", getWifiManager().disconnect());
    124         int netId = getWifiManager().getConnectionInfo().getNetworkId();
    125         getWifiManager().disableNetwork(netId);
    126         getWifiManager().saveConfiguration();
    127         return netId;
    128     }
    129 
    130     /**
    131      * Ensures wifi is enabled in device
    132      * @throws InterruptedException
    133      */
    134     public void ensureWifiEnabled() throws InterruptedException {
    135         // Device already connected to wifi as part of tradefed setup
    136         if (!getWifiManager().isWifiEnabled()) {
    137             getWifiManager().enableNetwork(getWifiManager().getConnectionInfo().getNetworkId(),
    138                     true);
    139             int counter = 5;
    140             while (--counter > 0 && !getWifiManager().isWifiEnabled()) {
    141                 Thread.sleep(TIMEOUT * 5);
    142             }
    143         }
    144         Assert.assertTrue("Wifi should be enabled by now", getWifiManager().isWifiEnabled());
    145     }
    146 
    147     /**
    148      * Checks whether device has wifi connection for data service
    149      * @return true/false
    150      */
    151     public boolean hasWifiData() {
    152         NetworkInfo netInfo = getConnectivityManager().getActiveNetworkInfo();
    153         Assert.assertNotNull(netInfo);
    154         return (netInfo.getType() == ConnectivityManager.TYPE_WIFI);
    155     }
    156 
    157     /**
    158      * Checks whether device has mobile connection for data service
    159      * @return true/false
    160      */
    161     public boolean hasMobileData() {
    162         NetworkInfo netInfo = getConnectivityManager().getActiveNetworkInfo();
    163         Assert.assertNotNull(netInfo);
    164         return (netInfo.getType() == ConnectivityManager.TYPE_MOBILE);
    165     }
    166 
    167     /**
    168      * Checks whether device has sim
    169      * @return true/false
    170      */
    171     public boolean hasDeviceSim() {
    172         TelephonyManager telMgr = (TelephonyManager) mContext
    173                 .getSystemService(mContext.TELEPHONY_SERVICE);
    174         return (telMgr.getSimState() == TelephonyManager.SIM_STATE_READY);
    175     }
    176 
    177     /**
    178      * Get connected wifi SSID.
    179      * @return connected wifi SSID
    180      */
    181     public String getCurrentWifiSSID() {
    182         WifiInfo connectionInfo = getWifiManager().getConnectionInfo();
    183         if (connectionInfo != null) {
    184             return connectionInfo.getSSID();
    185         }
    186         return null;
    187     }
    188 
    189     /**
    190      * Ensure bluetooth is enabled on device.
    191      * @throws InterruptedException
    192      */
    193     public void ensureBluetoothEnabled() throws InterruptedException {
    194         if (!getBluetoothAdapter().isEnabled()) {
    195             getBluetoothAdapter().enable();
    196         }
    197         int counter = 5;
    198         while (--counter > 0 && !getBluetoothAdapter().isEnabled()) {
    199             Thread.sleep(TIMEOUT * 2);
    200         }
    201     }
    202 
    203     /**
    204      * Check whether device has mobile data available.
    205      * @return true/false
    206      */
    207     public boolean mobileDataAvailable() {
    208         Network[] networkArray = getConnectivityManager().getAllNetworks();
    209         for (Network net: networkArray) {
    210             if (getConnectivityManager().getNetworkInfo(net).getType()
    211                     == ConnectivityManager.TYPE_MOBILE) {
    212                 return true;
    213             }
    214         }
    215         return false;
    216     }
    217 }
    218