#!/usr/bin/php
<?php
error_reporting(0);

function Help()
{
        echo "\n Returns Traceroute information against specified host.";
        echo "\n\n";
        echo "-h [Hostname] (Required)\n";
        echo "-s [Expected Return IP Address to Search For]\n";
        echo "\n\n";
}

for ($counter = 0; $counter < count($_SERVER['argv']); $counter++)
{
    if (strtolower($_SERVER['argv'][$counter]) == "-h")
        $hostname = ($_SERVER['argv'][$counter+1]);
    if (strtolower($_SERVER['argv'][$counter]) == "-c")
        $critical = ($_SERVER['argv'][$counter+1]);
    if (strtolower($_SERVER['argv'][$counter]) == "-w")
        $warning = ($_SERVER['argv'][$counter+1]);
    if (strtolower($_SERVER['argv'][$counter]) == "-s")
        $searchfor = ($_SERVER['argv'][$counter+1]);

}

if (!($_SERVER['argc'] > 1))
{
        Help();
        die("\n\n");

}

exec ("traceroute $hostname", $out, $output);
system ("killall -q traceroute", $errorvar); // Kill all traceroute processes in case of a stall.  Or can use echo traceroute to execute without shell

// Go through each line of output and see if $searchfor is in there
$result = 0;

foreach ($out as $output)
{
        $pos = strpos($output, $searchfor);
        //if ($pos === true)
        if ($pos)
        {
                //echo "Setting result to True\n";
                $result = $result+1;
        }
}

if ($result>0)
{
        echo "OK.  $searchfor found in traceroute to $hostname.\n";
        exit(0);
}
else
{
        echo "CRITICAL.  $searchfor not found in traceroute to $hostname.\n";
         exit(2);
}
?>