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package se.leap.bitmaskclient.tethering;
import android.content.Context;
import android.content.IntentFilter;
import android.net.wifi.WifiManager;
import java.lang.reflect.Method;
import java.net.NetworkInterface;
import java.util.Enumeration;
import se.leap.bitmaskclient.utils.Cmd;
public class TetheringStateManager {
private static final String TAG = TetheringStateManager.class.getSimpleName();
private static TetheringStateManager instance;
private WifiManager wifiManager;
private TetheringStateManager() { }
public static TetheringStateManager getInstance() {
if (instance == null) {
instance = new TetheringStateManager();
}
return instance;
}
public void init(Context context) {
TetheringBroadcastReceiver broadcastReceiver = new TetheringBroadcastReceiver();
IntentFilter intentFilter = new IntentFilter("android.net.conn.TETHER_STATE_CHANGED");
intentFilter.addAction("android.net.wifi.WIFI_AP_STATE_CHANGED");
context.getApplicationContext().registerReceiver(broadcastReceiver, intentFilter);
instance.wifiManager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
updateWifiTetheringState();
updateUsbTetheringState();
updateBluetoothTetheringState();
}
private static boolean isWifiApEnabled() {
try {
Method method = instance.wifiManager.getClass().getMethod("getWifiApState");
int tmp = ((Integer) method.invoke(instance.wifiManager));
return WifiHotspotState.WIFI_AP_STATE_ENABLED.ordinal() == tmp % 10;
} catch (Exception e) {
return false;
}
}
private static boolean getUsbTetheringState() {
try {
for(Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface networkInterface = en.nextElement();
if(!networkInterface.isLoopback()){
if(networkInterface.getName().contains("rndis") || networkInterface.getName().contains("usb")){
return true;
}
}
}
} catch(Exception e){
e.printStackTrace();
}
return false;
}
// Check whether Bluetooth tethering is enabled.
private static boolean isBluetoothTetheringEnabled() {
StringBuilder log = new StringBuilder();
boolean hasBtPan = false;
try {
hasBtPan = Cmd.runBlockingCmd(new String[] {"ifconfig bt-pan"}, log) == 0;
//Log.d(TAG, "ifconfig result: " + log.toString());
} catch (Exception e) {
e.printStackTrace();
}
return hasBtPan;
}
static void updateUsbTetheringState() {
TetheringObservable.setUsbTethering(getUsbTetheringState());
}
static void updateBluetoothTetheringState() {
TetheringObservable.setBluetoothTethering(isBluetoothTetheringEnabled());
}
static void updateWifiTetheringState() {
TetheringObservable.setWifiTethering(isWifiApEnabled());
}
}
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