ConnectivityChangeReceiver.java

/**
 * Detect the connectivity changes (for roaming and LAN subnet changes)
 * 
 * Copyright (C) 2011-2012  Umakanthan Chandran
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * @author Umakanthan Chandran
 * @version 1.0
 */
package dev.ukanth.ufirewall.broadcast;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;

import dev.ukanth.ufirewall.Api;
import dev.ukanth.ufirewall.InterfaceTracker;
import dev.ukanth.ufirewall.log.Log;
import dev.ukanth.ufirewall.log.LogService;
import dev.ukanth.ufirewall.util.G;

public class ConnectivityChangeReceiver extends BroadcastReceiver {

	public static final String TAG = "AFWall";

	// These are marked "@hide" in WifiManager.java
	public static final String WIFI_AP_STATE_CHANGED_ACTION = "android.net.wifi.WIFI_AP_STATE_CHANGED";
	public static final String EXTRA_WIFI_AP_STATE = "wifi_state";
	public static final String EXTRA_PREVIOUS_WIFI_AP_STATE = "previous_wifi_state";
	public static final int WIFI_AP_STATE_DISABLING = 10;
	public static final int WIFI_AP_STATE_DISABLED = 11;
	public static final int WIFI_AP_STATE_ENABLING = 12;
	public static final int WIFI_AP_STATE_ENABLED = 13;
	public static final int WIFI_AP_STATE_FAILED = 14;

	@Override
	public void onReceive(final Context context, Intent intent) {
		if (intent.getAction().equals(WIFI_AP_STATE_CHANGED_ACTION)) {
			int newState = intent.getIntExtra(EXTRA_WIFI_AP_STATE, -1);
			int oldState = intent.getIntExtra(EXTRA_PREVIOUS_WIFI_AP_STATE, -1);
			Log.d(TAG, "OS reported AP state change: " + oldState + " -> " + newState);
		}
		// NOTE: this gets called for wifi/3G/tether/roam changes but not VPN connect/disconnect
		// This will prevent applying rules when the user disable the option in preferences. This is for low end devices
		
		if(G.activeRules()){
			InterfaceTracker.applyRulesOnChange(context, InterfaceTracker.CONNECTIVITY_CHANGE);
		}
		final Intent logIntent = new Intent(context, LogService.class);
		if(G.enableLogService()){
			 //check if the firewall is enabled
			if(!Api.isEnabled(context) || !InterfaceTracker.isNetworkUp(context)) {
				//make sure kill all the klog ripper
				context.stopService(logIntent);
			} else{
				//restart the service
				context.stopService(logIntent);
				context.startService(logIntent);
			}
		 } else {
				//no internet - stop the service
			 context.stopService(logIntent);
		 }
	}
	
	
}