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/*
* Copyright (c) 2012-2018 Arne Schwabe
* Distributed under the GNU GPL v2 with additional terms. For full terms see the file doc/LICENSE.txt
*/
package de.blinkt.openvpn.core;
import android.annotation.SuppressLint;
import android.content.Context;
import android.net.*;
import android.os.Build;
import android.provider.Settings;
import android.text.TextUtils;
import java.net.Inet4Address;
import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.Vector;
import de.blinkt.openvpn.R;
public class NetworkUtils {
public static Vector<String> getLocalNetworks(Context c, boolean ipv6) {
ConnectivityManager conn = (ConnectivityManager) c.getSystemService(Context.CONNECTIVITY_SERVICE);
Vector<String> nets = new Vector<>();
Network[] networks = conn.getAllNetworks();
for (Network network : networks) {
NetworkInfo ni = conn.getNetworkInfo(network);
LinkProperties li = conn.getLinkProperties(network);
NetworkCapabilities nc = conn.getNetworkCapabilities(network);
// Ignore network if it has no capabilities
if (nc == null)
continue;
// Skip VPN networks like ourselves
if (nc.hasTransport(NetworkCapabilities.TRANSPORT_VPN))
continue;
// Also skip mobile networks
if (nc.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR))
continue;
for (LinkAddress la : li.getLinkAddresses()) {
if ((la.getAddress() instanceof Inet4Address && !ipv6) ||
(la.getAddress() instanceof Inet6Address && ipv6)) {
//nets.add(la.toString());
NetworkSpace.IpAddress ipaddress;
if (la.getAddress() instanceof Inet6Address)
ipaddress = new NetworkSpace.IpAddress((Inet6Address) la.getAddress(), la.getPrefixLength(), true);
else
ipaddress = new NetworkSpace.IpAddress(new CIDRIP(la.getAddress().getHostAddress(), la.getPrefixLength()), true);
nets.add(ipaddress.toString());
}
}
}
return nets;
}
@SuppressLint("HardwareIds")
public static String getFakeMacAddrFromSAAID(Context c) {
char[] HEX_ARRAY = "0123456789ABCDEF".toCharArray();
String saaid = Settings.Secure.getString(c.getContentResolver(),
Settings.Secure.ANDROID_ID);
if (saaid == null)
return null;
StringBuilder ret = new StringBuilder();
if (saaid.length() >= 6) {
byte[] sb = saaid.getBytes();
for (int b = 0; b <= 6; b++) {
if (b != 0)
ret.append(":");
int v = sb[b] & 0xFF;
ret.append(HEX_ARRAY[v >>> 4]);
ret.append(HEX_ARRAY[v & 0x0F]);
}
}
return ret.toString();
}
}
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