Re: Find MAC Address in PHP

On 4/23/07, Davi <davividal@siscompar.com.br> wrote:

Em Domingo 22 Abril 2007 03:12, Richard Lynch escreveu: On Fri, April 20, 2007 3:00 pm, Nathaniel Hall wrote:

<?php $MAC = system("arp 192.168.200.254"); echo $MAC; ?> does not give me any output. I have copied arp to a place that the apache user can execute from and ensured arp is executable.

Use exec and the extra args to get error codes. ARP is a root-command... =]

Ok, maybe it's because i've builded my own Linux, and didn't wanted to have any security, but /sbin/arp has chmod value 755 on my system, and so, i can execute it with any user.

Can you run 'arp' and get what you want from command line? As web-user? No.

i can :)

Can you 'su' to PHP user and *then* run it and get what you want? Hum... Not at all... You need to enter the root password... How can you do that? sudo sounds a little better... But... How about security?

Hmm, that would mean that you have to store your root password in your PHP script ... I don't prefer that, maybe you could use it on a development server, but don't use it on production server ;)

If not, you can't do that. And with a shell-script outputting the MAC to a .txt temp file, reading it from the PHP script? BTW, have a look at suPHP [1]... =] [1] - http://www.howtoforge.com/suphp_debian_etch_ispconfig

That's really a big job to install :( Tijnema