Re: How to get MAC address for local machine?

[Phil Hanna]

U¿ytkownik Shripathi Kamath napisa³:

Oh... Sorry about that
This "not necessarily" seemed to be referring to "Sounds like you need some
JNI and platform specific code".

Operating system specific, of course, but this works for Windows NT:

import java.io.*;
import java.net.*;
import java.util.*;
import java.util.regex.*;

public class GetMac
{
public static void main(String[] args)
throws IOException
{
String address = new GetMac().getMacAddress();
System.out.println(address);
}

public String getMacAddress() throws IOException
{
String macAddress = null;
String command = "ipconfig /all";
Process pid = Runtime.getRuntime().exec(command);
BufferedReader in =
new BufferedReader(
new InputStreamReader(pid.getInputStream()));
while (true) {
String line = in.readLine();
if (line == null)
break;
Pattern p = Pattern.compile(".*Physical Address.*: (.*)");
Matcher m = p.matcher(line);
if (m.matches()) {
macAddress = m.group(1);
break;
}
}
in.close();
return macAddress;
}
}

 

[Roedy Green]

Pattern p = Pattern.compile(".*Physical Address.*: (.*)");

I did a look for a Windows api call to find the MAC but came up blank.
If I could find one, it would be pretty easy to do a JNI which would
be faster that the exec method, and would not be subject to IPCONFIG
wording changes.

 

[Rene]

I did a look for a Windows api call to find the MAC but came up blank.
If I could find one, it would be pretty easy to do a JNI which would
be faster that the exec method, and would not be subject to IPCONFIG
wording changes.

Maybe http://members.cox.net/preston.bannister/software/Win32_GetMAC.html
helps you.

 

[Rene]

I did a look for a Windows api call to find the MAC but came up blank.
If I could find one, it would be pretty easy to do a JNI which would
be faster that the exec method, and would not be subject to IPCONFIG
wording changes.

Bah me again.

Best solution seems to be here:
http://www.codeguru.com/network/GetMAC.html

(method number three) since apparently Microsoft stopped using the MAC
address starting with Windows 2000 in its UUIDs.

Btw, the pages were found using google search with: "win32 api call get mac
address"

HTH.

CU

Rene

 

[Rene]

This is the technique the recommends. The catch is when I went to
implement it, I discovered my Borland C++ v 5 does not have the
necessary include libraries to define IP_ADAPTER_INFO

Does
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/iphlp/iphl
p/ip_adapter_info.asp help?

CU

Rene

 

[Roedy Green]

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/iphlp/iphl
p/ip_adapter_info.asp help?

It would help, but that just defines many more types. I also need the
prototypes for the methods too. Perhaps all this could be gleaned
from docs and recreated. The proper way is to find a compiler with
these *.h files built in or a downloadable package with the all
included.

I was only prepared to dedicate a few hours to the project, not days,
since I have no need of the result myself and I don't think it has any
commercial potential.

 

[Roedy Green]

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/iphlp/iphl
p/ip_adapter_info.asp help?

we need a copy of iptypes.h for a start.