system()

[johnUG]

hi all,
I am currently using the system() method to do a traceroute

eg $path="/usr/sbin/traceroute" .argv[1];
system($path);

when I key in certain address like www.singnet.com eg

php filename.php www.singnet.com I get alot of for quite a period of time. My concern here is how do I stop the execution when I encouter long period of . I have tried using set_time all those function but they are not applicable to method like system() ...... can anyone advise me on how to kill the external process when certain time is up.... thanks a million

John

[swr]

My traceroute has -w and -q flags... yours may too. "traceroute -w 2 -q 1 someaddress". That won't solve your problem the way you want, but it will alleviate it at least.

Be sure to properly sanitize the host argument to traceroute. The example you posted does not, and would allow anyone on the internet access to a command shell on your web server by specifying a "host" of (for example) "www.example.com; rm -rf /".