diff options
| -rw-r--r-- | src/frontends/android/src/org/strongswan/android/logic/CharonVpnService.java | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/frontends/android/src/org/strongswan/android/logic/CharonVpnService.java b/src/frontends/android/src/org/strongswan/android/logic/CharonVpnService.java index d66a5517d..6b454654a 100644 --- a/src/frontends/android/src/org/strongswan/android/logic/CharonVpnService.java +++ b/src/frontends/android/src/org/strongswan/android/logic/CharonVpnService.java @@ -17,9 +17,13 @@ package org.strongswan.android.logic; +import java.net.InetAddress; +import java.net.NetworkInterface; +import java.net.SocketException; import java.security.cert.CertificateEncodingException; import java.security.cert.X509Certificate; import java.util.ArrayList; +import java.util.Enumeration; import org.strongswan.android.data.VpnProfile; import org.strongswan.android.data.VpnProfileDataSource; @@ -399,6 +403,39 @@ public class CharonVpnService extends VpnService implements Runnable */ public native void deinitializeCharon(); + /** + * Helper function that retrieves a local IPv4 address. + * + * @return string representation of an IPv4 address, or null if none found + */ + private static String getLocalIPv4Address() + { + try + { + Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); + while (en.hasMoreElements()) + { + NetworkInterface intf = en.nextElement(); + + Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); + while (enumIpAddr.hasMoreElements()) + { + InetAddress inetAddress = enumIpAddr.nextElement(); + if (!inetAddress.isLoopbackAddress() && inetAddress.getAddress().length == 4) + { + return inetAddress.getHostAddress().toString(); + } + } + } + } + catch (SocketException ex) + { + ex.printStackTrace(); + return null; + } + return null; + } + /* * The libraries are extracted to /data/data/org.strongswan.android/... * during installation. |