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package org.fueri.reeldroid.network;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.ArrayList;
import java.util.List;
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
/***
*
* DeviceManager singleton
*
* @author Patrick Fürlinger fueri@fueri.ch
*
* 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/>.
*
*
*
*/
public class DeviceManager {
private static final int MAX_PING_TIMEOUT_MS = 40;
public static interface ProgressListener {
void publish(String currentIP);
}
/**
*
* @param defaultPort
* @return
*/
public static List<String> findVDRHosts(Context context,
Integer defaultPort, ProgressListener listener) {
if (defaultPort == null) {
defaultPort = 6420;
}
List<String> list = new ArrayList<String>();
ConnectivityManager conMgr = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
WifiManager wifiManager = (WifiManager) context
.getSystemService(Context.WIFI_SERVICE);
boolean netStatus = conMgr
.getNetworkInfo(ConnectivityManager.TYPE_WIFI).isConnected()
|| conMgr.getNetworkInfo(ConnectivityManager.TYPE_ETHERNET)
.isConnected();
if (netStatus == false) {
return list;
}
WifiInfo wifiInfo = wifiManager.getConnectionInfo();
String baseIp = intToBaseIp(wifiInfo.getIpAddress());
for (Integer i = 1; i <= 254; i++) {
InetAddress ia;
try {
String ipHost = baseIp + i.toString();
if (listener != null) {
listener.publish(ipHost);
}
ia = InetAddress.getByName(ipHost);
if (findHost(ia, defaultPort, MAX_PING_TIMEOUT_MS) == false) {
continue;
}
list.add(ipHost);
} catch (UnknownHostException e) {
}
}
return list;
}
/**
*
* @param ip
* @param port
* @return
*/
public static boolean findHost(String ip, int port, int pingTimeout) {
InetAddress ia = null;
try {
ia = InetAddress.getByName(ip);
} catch (UnknownHostException e) {
return false;
}
return findHost(ia, port, pingTimeout);
}
/**
*
* @param ip
* @param port
* @return
*/
public static boolean findHost(InetAddress ip, int port, int pingTimeout) {
try {
InetAddress address = ip;
boolean reachable = address.isReachable(pingTimeout);
if (reachable == false) {
return false;
}
Socket socket = new Socket();
socket.connect(new InetSocketAddress(ip, port), 1000);
socket.close();
return true;
} catch (Exception e) {
return false;
}
}
/**
* return base ip as a string.
*
* @param ip_address
* @return String
*/
public static String intToBaseIp(int ip_address) {
return (ip_address & 0xFF) + "." + ((ip_address >> 8) & 0xFF) + "."
+ ((ip_address >> 16) & 0xFF) + ".";
}
}
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