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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.content.Context;
import android.net.*;
import android.os.Build;
import android.text.TextUtils;
import android.util.Log;
import androidx.core.net.ConnectivityManagerCompat;
import java.net.Inet4Address;
import java.net.Inet6Address;
import java.util.Vector;
public class NetworkUtils {
private static final String TAG = NetworkUtils.class.getSimpleName();
public static Vector<String> getLocalNetworks(Context c, boolean ipv6) {
Vector<String> nets = new Vector<>();
ConnectivityManager conn = (ConnectivityManager) c.getSystemService(Context.CONNECTIVITY_SERVICE);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
Network[] networks = conn.getAllNetworks();
for (Network network : networks) {
NetworkInfo ni = conn.getNetworkInfo(network);
LinkProperties li = conn.getLinkProperties(network);
NetworkCapabilities nc = conn.getNetworkCapabilities(network);
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());
}
}
} else {
// Old Android Version, use native utils via ifconfig instead
// Add local network interfaces
if (ipv6)
return nets;
String[] localRoutes = NativeUtils.getIfconfig();
// The format of mLocalRoutes is kind of broken because I don't really like JNI
for (int i = 0; i < localRoutes.length; i += 3) {
String intf = localRoutes[i];
String ipAddr = localRoutes[i + 1];
String netMask = localRoutes[i + 2];
if (intf == null || intf.equals("lo") ||
intf.startsWith("tun") || intf.startsWith("rmnet"))
continue;
if (ipAddr == null || netMask == null) {
VpnStatus.logError("Local routes are broken?! (Report to author) " + TextUtils.join("|", localRoutes));
continue;
}
nets.add(ipAddr + "/" + CIDRIP.calculateLenFromMask(netMask));
}
}
return nets;
}
public static boolean isConnectedToWifi(Context context) {
ConnectivityManager connManager = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.LOLLIPOP_MR1) {
NetworkInfo wifi = connManager.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
Log.d(TAG, "isConnectedToWifi (<=LOLLIPOP_MR1): " + wifi.isConnected());
return wifi.isConnected();
} else if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.O_MR1) {
NetworkInfo[] netInfos = connManager.getAllNetworkInfo();
for (NetworkInfo netInfo : netInfos) {
if (netInfo != null && netInfo.getType() == ConnectivityManager.TYPE_WIFI) {
Log.d(TAG, "isConnectedToWifi (<= Build.VERSION_CODES.O_MR1): " + netInfo.isConnected());
return netInfo.isConnected();
}
}
} else {
NetworkInfo netInfo = connManager.getActiveNetworkInfo();
if(netInfo != null) {
NetworkCapabilities networkCapabilities = connManager.getNetworkCapabilities(connManager.getActiveNetwork());
Log.d(TAG, "isConnectedToWifi (> Build.VERSION_CODES.O_MR1): " + networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI));
return networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI);
}
}
return false;
}
}
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