/*
* Created by Angel Leon (@gubatron), Alden Torres (aldenml)
* Copyright (c) 2011, 2012, FrostWire(TM). All rights reserved.
*
* 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/>.
*/
package com.bt.download.android.gui;
import java.io.IOException;
import java.lang.reflect.Field;
import java.net.InetAddress;
import android.app.Application;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.net.wifi.WifiManager;
import android.util.Log;
import com.bt.download.android.core.ConfigurationManager;
import com.bt.download.android.core.Constants;
import com.bt.download.android.core.CoreRuntimeException;
import com.frostwire.util.ByteUtils;
/**
* @author gubatron
* @author aldenml
*
*/
public final class NetworkManager {
private static final String TAG = "FW.NetworkManager";
private static Field inetAddressHostNameField;
// The following constants are from the android sdk source code
// It does not matter if some constants are from a newer android version,
// since only the latest phone can go to the specified state.
/**
* Current network is UMTS - aka GSM's 3G (AT&T)
*/
private static final int NETWORK_TYPE_UMTS = 3;
/**
* Current network is EVDO revision B - aka CDMA's 3G (Verizon)
*/
private static final int NETWORK_TYPE_EVDO_B = 12;
/**
* Verizon's 4G LTE (as seen on the Thunderbolt)
*/
private static final int NETWORK_TYPE_4G_LTE = 13;
/**
* Verizon's 4G eHRPD
* http://developer.motorola.com/docstools/library/detecting-and-using-lte-networks/
*/
private static final int NETWORK_TYPE_4G_EHRPD = 14;
/**
* The Default WiMAX data connection. When active, all data traffic
* will use this connection by default. Should not coexist with other
* default connections.
*/
private static final int TYPE_WIMAX = 6;
private final Application context;
private int listeningPort;
static {
try {
inetAddressHostNameField = InetAddress.class.getDeclaredField("hostName");
inetAddressHostNameField.setAccessible(true);
} catch (Throwable e) {
Log.e(TAG, "Error getting inetAddressHostNameField", e);
}
}
private static NetworkManager instance;
public synchronized static void create(Application context) {
if (instance != null) {
return;
}
instance = new NetworkManager(context);
}
public static NetworkManager instance() {
if (instance == null) {
throw new CoreRuntimeException("NetworkManager not created");
}
return instance;
}
private NetworkManager(Application context) {
this.context = context;
if (ConfigurationManager.instance().getBoolean(Constants.PREF_KEY_NETWORK_USE_RANDOM_LISTENING_PORT)) {
listeningPort = ByteUtils.randomInt(40000, 49999);
} else {
listeningPort = Constants.GENERIC_LISTENING_PORT;
}
}
public int getListeningPort() {
return listeningPort;
}
public boolean isDataUp() {
// boolean logic trick, since sometimes android reports WIFI and MOBILE up at the same time
return (isDataWIFIUp() != isDataMobileUp()) || isDataWiMAXUp();
}
public boolean isDataMobileUp() {
ConnectivityManager connectivityManager = getConnectivityManager();
NetworkInfo networkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
return networkInfo != null && networkInfo.isAvailable() && networkInfo.isConnected();
}
public boolean isData3GUp() {
ConnectivityManager connectivityManager = getConnectivityManager();
NetworkInfo networkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
return networkInfo != null && networkInfo.isAvailable() && (networkInfo.getSubtype() == NETWORK_TYPE_UMTS || networkInfo.getSubtype() == NETWORK_TYPE_EVDO_B) && networkInfo.isConnected();
}
public boolean isDataWIFIUp() {
ConnectivityManager connectivityManager = getConnectivityManager();
NetworkInfo networkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
return networkInfo != null && networkInfo.isAvailable() && networkInfo.isConnected();
}
public boolean isDataWiMAXUp() {
ConnectivityManager connectivityManager = getConnectivityManager();
NetworkInfo networkInfo = connectivityManager.getNetworkInfo(TYPE_WIMAX);
return networkInfo != null && networkInfo.isAvailable() && networkInfo.isConnected();
}
public boolean isData4GUp() {
ConnectivityManager connectivityManager = getConnectivityManager();
NetworkInfo networkInfo = connectivityManager.getNetworkInfo(ConnectivityManager.TYPE_MOBILE);
return networkInfo != null && networkInfo.isAvailable() && (networkInfo.getSubtype() == NETWORK_TYPE_4G_LTE || networkInfo.getSubtype() == NETWORK_TYPE_4G_EHRPD) && networkInfo.isConnected();
}
public WifiManager getWifiManager() {
return (WifiManager) context.getSystemService(Application.WIFI_SERVICE);
}
public InetAddress getMulticastInetAddress() throws IOException {
WifiManager wifi = getWifiManager();
int intaddr = wifi.getConnectionInfo().getIpAddress();
byte[] byteaddr = new byte[] { (byte) (intaddr & 0xff), (byte) (intaddr >> 8 & 0xff), (byte) (intaddr >> 16 & 0xff), (byte) (intaddr >> 24 & 0xff) };
return InetAddress.getByAddress(byteaddr);
}
private ConnectivityManager getConnectivityManager() {
return (ConnectivityManager) context.getSystemService(Application.CONNECTIVITY_SERVICE);
}
}