«

I need to write a program to find mac address of a remote computer, is
this possible? How?

(Jay) wrote in
news: om:

> I need to write a program to find mac address of a remote computer, is
> this possible? How?

You cannot do this without platform-specific code which is off-topic here.
The C language does not provide networking support.

--
- Mark ->
--

Jay wrote:
>
> I need to write a program to find mac address of a remote computer, is
> this possible? How?

arp?

/david

--
Andre, a simple peasant, had only one thing on his mind as he crept
along the East wall: 'Andre, creep... Andre, creep... Andre, creep.'
-- unknown

Jay wrote:
> I need to write a program to find mac address of a remote computer, is
> this possible? How?

It is possible, but you don't need to write a program, since
there is http://www.tcpdump.org.

Jirka

>I need to write a program to find mac address of a remote computer, is
>this possible? How?

Ping between both computers and run "arp" on one side if you got Linux or
similar.

In < > Jan Engelhardt <> writes:

>>I need to write a program to find mac address of a remote computer, is
>>this possible? How?
>
>Ping between both computers and run "arp" on one side if you got Linux or
>similar.

And you'll get the MAC address of the router, if the machines are not on
the same subnet.

Dan
--
Dan Pop
DESY Zeuthen, RZ group
Email:

Jay wrote:
> I need to write a program to find mac address of a remote computer, is
> this possible? How?

#include <stdio.h>

int main(void)
{
char mac_address[257];

printf("Enter the MAC address of the remote computer: ");
fflush(stdin);

fgets(mac_address,sizeof(mac_address), stdin);
if (mac_address[strlen(mac_address) - 1] == '\n')
mac_address[strlen(mac_address) - 1] = 0;

printf("The MAC address of the remote computer is %s\n",
mac_address);

return 0;
}



--
Lew Pitcher

Master Codewright and JOAT-in-training
Registered Linux User #112576 (http://counter.li.org/)
Slackware - Because I know what I'm doing.

Lew Pitcher <> scribbled the following:
> Jay wrote:
>> I need to write a program to find mac address of a remote computer, is
>> this possible? How?

> #include <stdio.h>

> int main(void)
> {
> char mac_address[257];

> printf("Enter the MAC address of the remote computer: ");
> fflush(stdin);
^^^^^^^^^^^^^
Undefined behaviour. Because of this, the program might completely
fail to display the given MAC address.

> fgets(mac_address,sizeof(mac_address), stdin);
> if (mac_address[strlen(mac_address) - 1] == '\n')
> mac_address[strlen(mac_address) - 1] = 0;

> printf("The MAC address of the remote computer is %s\n",
> mac_address);

> return 0;
> }

--
/-- Joona Palaste () ---------------------------\
| Kingpriest of "The Flying Lemon Tree" G++ FR FW+ M- #108 D+ ADA N+++|
| http://www.helsinki.fi/~palaste W++ B OP+ |
\----------------------------------------- Finland rules! ------------/
"Insanity is to be shared."
- Tailgunner

Joona I Palaste wrote:
> Lew Pitcher <> scribbled the following:
>
>>Jay wrote:
>>
>>>I need to write a program to find mac address of a remote computer, is
>>>this possible? How?

>> printf("Enter the MAC address of the remote computer: ");
>> fflush(stdin);
>
> ^^^^^^^^^^^^^
> Undefined behaviour. Because of this, the program might completely
> fail to display the given MAC address.

Da*n, caught out by a typo. Of course, I meant
fflush(stdout);
but I transcribed it incorrectly.


--

Lew Pitcher, IT Consultant, Application Architecture
Enterprise Technology Solutions, TD Bank Financial Group

(Opinions expressed here are my own, not my employer's)

Originally posted by Jay

> I need to write a program to find mac address of a remote computer, is

> this possible? How?



If you can run a remote shell on the machine, you can run ifconfig and
parse the result with grep from the standard output.



> rsh remoteHost sbin/ifconfig | grep "^eth0"

eth0 Link encap:Ethernet HWaddr 00:0D:29:A8:80:44



You can use cut or awk to extract the MAC hardware address.


--
PeterW


Posted via http://dbforums.com