Miscellaneous
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<?
/*
Copyright (c) 2001, Martyn Allan
All rights reserved.
Usage:
// To setup:
$whois = new whois;
$whois->setDomain($domain); // $domain is the domain you wish to lookup.
$whois->find;
$whois->lookup;
$whois->ip_lookup; // If you are looking up an ip.
// To view:
echo $whois->server; // The whois server used to get the info.
echo $whois->header; // The Information recieved from "whois.crsnic.net" (for com,net,org,edu Domains and IP's only).
echo $whois->nomatch; // Did not find a match in "whois.crsnic.net".
echo $whois->domain; // The domain.
echo $whois->ip; // The ip (If you are looking up an ip).
echo $whois->body; // The info on the domain.
echo $whois->ipbody; // The info on the ip.
*/
function OutStr ($string_haystack, $needle_start, $needle_finish, $pos_add=0) {
if (strpos ($string_haystack, $needle_start)) {
$start = strpos ($string_haystack, $needle_start)+$pos_add;
$count = strpos ($string_haystack, $needle_finish, $start)-$start;
return substr ($string_haystack, $start, $count);
}
}
class whois {
var $server, $header, $body, $ipbody, $domain, $ip, $step, $nomatch;
function setDomain ($lookup) {
$this->domain = $lookup;
$this->step = 1;
}
function find () {
if ($this->step >= 1) {
$lookup = $this->domain;
$tld = array_reverse (explode ('.', $lookup));
$this->nomatch = false;
if (preg_match ("/d{1,3}/", $tld[0])) {
$this->ip = $lookup;
}
if (preg_match ("/com|net|org|edu|d{1,3}/i", $tld[0])):
$whois = "whois.crsnic.net"; // rs.internic.net is an alternative address.
$fp = fsockopen ($whois, 43, &$errno, &$errstr, 30);
if (!$fp) {
printf ("Error: %s (%s)", $errstr, $errno);
$this->header = 0;
return;
}
$lookup .= "n";
fputs ($fp, $lookup);
$this->header = fread ($fp, 16384);
fclose ($fp);
if (strpos ($this->header, "No match for")) {
$this->nomatch = true;
return;
}
$look_a = strtolower (OutStr ($this->header, "Server Name:", "n", 13));
$look_b = strtolower (OutStr ($this->header, "Domain Name:", "n", 13));
if ($look_a) {
$look_p = array_reverse (explode ('.', $look_a));
$this->domain = $look_p[1].".".$look_p[0];
}
if ($look_b) {
$this->domain = $look_b;
}
$this->server = strtolower (OutStr ($this->header, "Whois Server:", "n", 14));
else:
$this->header = '';
$this->server = strtolower ($tld[0]).".whois-servers.net";
endif;
$this->step = 2;
}
}
function lookup () {
if ($this->step >= 2) {
$lookup = $this->domain;
$whois = $this->server;
$fp = fsockopen ($whois, 43, &$errno, &$errstr, 30);
if (!$fp) {
printf ("Error: %s (%s)", $errstr, $errno);
$this->body = 0;
return;
}
$lookup .= "n";
fputs ($fp, $lookup);
$this->body .= fread ($fp, 16384);
fclose ($fp);
$this->step = 3;
}
}
function ip_lookup () {
if ($this->ip) {
$lookup = $this->ip;
$whois = "whois.arin.net";
$fp = fsockopen ($whois, 43, &$errno, &$errstr, 30);
if (!$fp) {
printf ("Error: %s (%s)", $errstr, $errno);
$this->ipbody = 0;
return;
}
$lookup .= "n";
fputs ($fp, $lookup);
$this->ipbody .= fread ($fp, 16384);
fclose ($fp);
$this->step = 4;
}
}
}
?>
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Usage Example
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<? require("whois.inc"); ?>
<form method="POST" action="<? echo $PHP_SELF; ?>">
<input type="text" name="lookup">
<input type="submit" value="lookup">
</form>
<?
if($REQUEST_METHOD == "POST"){
$whois = new whois;
$whois->setDomain($lookup);
$whois->find();
if (!$whois->nomatch) $whois->lookup();
if ($whois->ip) $whois->ip_lookup();
printf("<pre>%sn%sn%s</pre>n", $whois->header, $whois->body, $whois->ipbody);
}
?>
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