Feature #1304

1 files changed, 148 insertions, 0 deletions

diff --git a/vdrmanager/src/org/fueri/reeldroid/network/DeviceManager.java b/vdrmanager/src/org/fueri/reeldroid/network/DeviceManager.java
new file mode 100644
index 0000000..59e9e3a
--- /dev/null
+++ b/vdrmanager/src/org/fueri/reeldroid/network/DeviceManager.java
@@ -0,0 +1,148 @@
+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 wifiStatus = (conMgr
+				.getNetworkInfo(ConnectivityManager.TYPE_WIFI)).isConnected();
+
+		if (wifiStatus == 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) + ".";
+
+	}
+
+}