[vwnc] Mac address

Is there a way to get the computer's MAC address in Windows ?

Annick Fron


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On Sep 4, 2008, at 5:13 PM, Annick Fron wrote:

> Is there a way to get the computer's MAC address in Windows ?

I don't have a Windows machine here so I cannot check but I think the  
'ipconfig' command line tool shows mac addresses
(try "ipconfig /all").


Alternatively use DLLCC, here's a message with a suggested C skeleton  
program:

   http://groups.google.com/group/comp.os.ms-windows.programmer.win32/msg/beb4290fd18ed1d9


R
-



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Annick Fron wrote:
> Is there a way to get the computer's MAC address in Windows ?

A simple and quick and dirty way (not language independent
unfortunately) would be:

| proc str index str2 str3 |
proc := WinProcess new.
str := proc executeSingleCommand:   'ipconfig /all' .
index := str indexOfSubCollection: 'Physikalische Adresse' startingAt:1.
index := index + ('Physikalische Adresse'  size).

str2 := str copyFrom: index to: index + 100. "just arbitrary number"
str3 := str2 copyUpTo: Core.Character cr. "the first cr notes the end of
the line"
str3 copyFrom: ((str3 indexOf: $:) +1) to: (str3 size -1). "trim blanks"

For 'Physikalische Adresse' you have to include whatever physical
address means in your language.



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Le 4 sept. 08 à 17:29, Reinout Heeck a écrit :

>
> On Sep 4, 2008, at 5:13 PM, Annick Fron wrote:
>
>> Is there a way to get the computer's MAC address in Windows ?
>
> I don't have a Windows machine here so I cannot check but I think the
> 'ipconfig' command line tool shows mac addresses
> (try "ipconfig /all").

Yes this work using ExternalProcess ...
Thank you


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I would recommend parsing regular CSV from,

H:\>getmac /FO CSV /V

"Connection Name","Network Adapter","Physical Address","Transport Name"
"Local Area Connection","Broadcom NetXtreme 57xx Gigabit
Controller","00-19-B9-00-17-CE","\Device\Tcpip_{1CFCEB4C-2BD7-4D3F-AE5D-
DDE0462C2860}"
"VMware Network Adapter VMnet1","VMware Virtual Ethernet Adapter for
VMnet1","00-50-56-C0-00-01","\Device\Tcpip_{10B398CA-5D59-4771-9B9F-D601
DAC91331}"
"VMware Network Adapter VMnet8","VMware Virtual Ethernet Adapter for
VMnet8","00-50-56-C0-00-08","\Device\Tcpip_{B6C646D0-F1D0-46F1-A64F-4A69
D7966A98}"

Cheers,

-Boris

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Vancouver, Canada V6C 2T5
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-----Original Message-----
From: [hidden email] [mailto:[hidden email]] On
Behalf Of Claus Kick
Sent: September 4, 2008 9:12 AM
To: VW NC
Subject: Re: [vwnc] Mac address

Annick Fron wrote:
> Is there a way to get the computer's MAC address in Windows ?

A simple and quick and dirty way (not language independent
unfortunately) would be:

| proc str index str2 str3 |
proc := WinProcess new.
str := proc executeSingleCommand:   'ipconfig /all' .
index := str indexOfSubCollection: 'Physikalische Adresse' startingAt:1.
index := index + ('Physikalische Adresse'  size).

str2 := str copyFrom: index to: index + 100. "just arbitrary number"
str3 := str2 copyUpTo: Core.Character cr. "the first cr notes the end of

the line"
str3 copyFrom: ((str3 indexOf: $:) +1) to: (str3 size -1). "trim blanks"

For 'Physikalische Adresse' you have to include whatever physical
address means in your language.



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Using ifconfig or external process seems odd, somehow to me.  The problem is which interface are you looking for?  Local loopback?  The wired interface?  The wifi one?  What if you have multiple of either or all?  Additionally, parsing the output of an external command isn't without its own challenges.

I had a similar problem from a shell script, and so wrote the following C code to solve it.  The command takes a single argument, which is the interface.

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <sys/ioctl.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <net/if.h>
#include <netdb.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <fcntl.h>

int main(int argc, char **argv, char **envp)
{
        struct ifreq ifr;
        struct sockaddr_in *sin;
        int fd, i;

        if (argc == 2) {
                sin = (struct sockaddr_in *) &ifr.ifr_addr;
                bzero(&ifr, sizeof(ifr));

                if ((fd = socket(AF_INET, SOCK_STREAM, 0)) >= 0) {
                        strcpy(ifr.ifr_name, argv[1]);
                        /*
                           sin->sin_family = AF_INET;
                         */
                        if (ioctl(fd, SIOCGIFADDR, &ifr) == 0)
                                fprintf(stdout, "%s\n", inet_ntoa(sin->sin_addr));
                        // fputs("done", stdout);
                        else
                                perror("ioctl()");
                        close(fd);
                }
                else {
                        perror(argv[1]);
                        return EXIT_FAILURE;
                }
        }
        else
                fprintf(stderr, "usage: %s ifname\n", argv[0]);

        return EXIT_SUCCESS;
}

-- 
Visit <http://tggagne.blogspot.com/> for more great reading.

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