dorkbox/Utilities
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Added the ability to get the IP address from a NIC on the box

Browse Source
This commit is contained in:
nathan 2015-01-16 01:05:16 +01:00
parent e2a76c15f2
commit 6492a8ffe8
1 changed files with 70 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
Dorkbox-Util/src/dorkbox/util/Sys.java
View File

@ -24,8 +24,10 @@ import java.io.OutputStream;
import java.io.Reader;
import java.io.Writer;
import java.lang.reflect.Field;
import java.net.Inet4Address;
import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.net.URL;
import java.net.UnknownHostException;
import java.security.AccessController;
@ -790,4 +792,72 @@ public class Sys {
return null;
}
/**
* Tries to retrieve the IP address from the NIC. Order is ETHx -> EMx -> WLANx
* @return null if not found
*/
public static InetAddress getIpAddressesFromNic() {
try {
Enumeration<NetworkInterface> nets = NetworkInterface.getNetworkInterfaces();
while (nets.hasMoreElements()) {
NetworkInterface nextElement = nets.nextElement();
String name = nextElement.getName();
// we only want to use ethX addresses!
if (name.startsWith("eth")) {
Enumeration<InetAddress> inetAddresses = nextElement.getInetAddresses();
while (inetAddresses.hasMoreElements()) {
InetAddress address = inetAddresses.nextElement();
// we only support IPV4 addresses.
if (!address.isLoopbackAddress() && address instanceof Inet4Address) {
return address;
}
}
}
}
// it didn't work with ethX, so try emX!
while (nets.hasMoreElements()) {
NetworkInterface nextElement = nets.nextElement();
String name = nextElement.getName();
// we only want to use wlanX addresses!
if (name.startsWith("em")) {
Enumeration<InetAddress> inetAddresses = nextElement.getInetAddresses();
while (inetAddresses.hasMoreElements()) {
InetAddress address = inetAddresses.nextElement();
// we only support IPV4 addresses.
if (!address.isLoopbackAddress() && address instanceof Inet4Address) {
return address;
}
}
}
}
// it didn't work with ethX, so try wifi!
while (nets.hasMoreElements()) {
NetworkInterface nextElement = nets.nextElement();
String name = nextElement.getName();
// we only want to use wlanX addresses!
if (name.startsWith("wlan")) {
Enumeration<InetAddress> inetAddresses = nextElement.getInetAddresses();
while (inetAddresses.hasMoreElements()) {
InetAddress address = inetAddresses.nextElement();
// we only support IPV4 addresses.
if (!address.isLoopbackAddress() && address instanceof Inet4Address) {
return address;
}
}
}
}
} catch (SocketException e) {
}
return null;
}
}