[Webdev] traceroute back to client

[Donncha O Caoimh]

Did the following yesterday evening:
----------trace.php----------
<?php
 if (isset($GLOBALS["REMOTE_HOST"]) && !empty($GLOBALS["REMOTE_HOST"]))
    $host = $GLOBALS["REMOTE_HOST"];
 else
    if (isset($GLOBALS["REMOTE_ADDR"]) &&
!empty($GLOBALS["REMOTE_ADDR"]))
       $host = $GLOBALS["REMOTE_ADDR"];
$traceroute = "/usr/sbin/traceroute";
$out = "Finding path to $host\n\n";
print "$out<BR>";
for( $t = 1; $t < 4 ; $t++ ) {
  $out = $out. "Attempt $t:\n";
  print "Attempt $t:<BR>";
  print "<PRE>";
  exec( "$traceroute $host", $output );
  $output = implode( "\n", $output );
  print $output;
  flush();
  print "</PRE>";
  $out = $out.$output."\n\n";
  print "<BR>";
}
mail( "admin at somesite.com", "Traceroute from our site for $host", $out
);

----------trace.php----------


Donncha O Caoimh wrote:
> 
> Not wanting to reinvent the wheel, has anyone written or come across
> some php code to traceroute or ping back to the web user and tell them
> about their connection?