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package se.leap.bitmaskclient.tethering;
import android.content.Context;
import android.content.IntentFilter;
import android.net.ConnectivityManager;
import android.net.wifi.WifiManager;
import java.lang.reflect.Method;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.util.Enumeration;
public class TetheringObserver {
private static TetheringObserver instance;
private boolean isWifiTetheringEnabled;
private boolean isUsbTetheringEnabled;
private WifiManager wifiManager;
private ConnectivityManager connectivityManager;
private TetheringBroadcastReceiver broadcastReceiver;
private TetheringObserver() {
}
public static void init(Context context) {
if (instance == null) {
instance = new TetheringObserver();
instance.broadcastReceiver = new TetheringBroadcastReceiver();
IntentFilter intentFilter = new IntentFilter("android.net.wifi.WIFI_AP_STATE_CHANGED");
intentFilter.addAction("android.net.conn.TETHER_STATE_CHANGED");
context.getApplicationContext().registerReceiver(instance.broadcastReceiver, intentFilter);
instance.wifiManager = (WifiManager) context.getApplicationContext().getSystemService(Context.WIFI_SERVICE);
instance.setWifiTetheringEnabled(instance.isWifiApEnabled());
instance.connectivityManager = (ConnectivityManager) context.getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
}
}
private boolean isWifiApEnabled() {
try {
Method method = instance.wifiManager.getClass().getMethod("getWifiApState");
int tmp = ((Integer) method.invoke(wifiManager));
return WifiHotspotState.WIFI_AP_STATE_ENABLED.ordinal() == tmp % 10;
} catch (Exception e) {
return false;
}
}
private boolean getUsbTetheringState() {
try {
for(Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();) {
NetworkInterface networkInterface = en.nextElement();
for(Enumeration<InetAddress> enumIpAddr = networkInterface.getInetAddresses(); enumIpAddr.hasMoreElements();){
InetAddress inetAddress = enumIpAddr.nextElement();
if(!networkInterface.isLoopback()){
if(networkInterface.getName().contains("rndis") || networkInterface.getName().contains("usb")){
return true;
}
}
}
}
} catch(Exception e){
e.printStackTrace();
}
return false;
}
public static TetheringObserver getInstance() {
if (instance == null) {
throw new RuntimeException("Call init() first!");
}
return instance;
}
void setWifiTetheringEnabled(boolean enabled) {
isWifiTetheringEnabled = enabled;
}
public boolean isWifiTetheringEnabled() {
return isWifiTetheringEnabled;
}
void updateUsbTetheringState() {
isUsbTetheringEnabled = getUsbTetheringState();
}
public boolean isUsbTetheringEnabled() {
return isUsbTetheringEnabled;
}
}
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