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<?php
/*
Whois.php PHP classes to conduct whois queries
Copyright (C)1999,2005 easyDNS Technologies Inc. & Mark Jeftovic
Maintained by David Saez (david@ols.es)
For the most recent version of this package visit:
http://www.phpwhois.org
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
class WhoisClient {
// Recursion allowed ?
var $gtld_recurse = false;
// Default WHOIS port
var $PORT = 43;
// Maximum number of retries on connection failure
var $RETRY = 0;
// Time to wait between retries
var $SLEEP = 2;
// Read buffer size (0 == char by char)
var $BUFFER = 255;
// Communications timeout
var $STIMEOUT = 20;
// List of servers and handlers (loaded from servers.whois)
var $DATA = array();
// Array to contain all query variables
var $Query = array(
'tld' => '',
'type' => 'domain',
'string' => '',
'status',
'server'
);
/*
* Constructor function
*/
function WhoisClient () {
// Load DATA array
@require('whois.servers.php');
}
/*
* Perform lookup. Returns an array. The 'rawdata' element contains an
* array of lines gathered from the whois query. If a top level domain
* handler class was found for the domain, other elements will have been
* populated too.
*/
function GetData ($query='') {
// If domain to query passed in, use it, otherwise use domain from initialisation
$string = !empty($query) ? $query : $this->Query['string'];
$this->Query['string'] = $string;
if (!isset($this->Query['server'])) {
$this->Query['status'] = -1;
$this->Query['errstr'][] = 'No server specified';
return(array());
}
// Check if protocol is http
if (substr($this->Query['server'],0,7)=='http://' ||
substr($this->Query['server'],0,8)=='https://')
{
$output = $this->httpQuery($this->Query['server']);
}
else
{
// Connect to whois server, or return if failed
$ptr = $this->Connect();
if($ptr < 0) {
$this->Query['status'] = -1;
$this->Query['errstr'][] = 'Connect failed to: '.$this->Query['server'];
return(array());
}
stream_set_timeout($ptr,$this->STIMEOUT);
if (isset($this->WHOIS_PARAM[$this->Query['server']]))
fputs($ptr, $this->WHOIS_PARAM[$this->Query['server']].trim($string)."\r\n");
else
fputs($ptr, trim($string)."\r\n");
// Prepare to receive result
$raw = '';
$output = array();
while(!feof($ptr)) {
// If a buffer size is set, fetch line-by-line into an array
if($this->BUFFER)
$output[] = trim(fgets($ptr, $this->BUFFER));
// If not, fetch char-by-char into a string
else
$raw .= fgetc($ptr);
}
// If captured char-by-char, convert to an array of lines
if(!$this->BUFFER)
$output = explode("\n", $raw);
// Drop empty last line
unset($output[count($output)-1]);
}
// Create result and set 'rawdata'
$result = array();
$result['rawdata'] = $output;
// If we have a handler, post-process it with that
if(isSet($this->Query['handler']))
$result = $this->Process($result);
// Set whois server
$result['regyinfo']['whois'] = $this->Query['server'];
// Type defaults to domain
if (!isset($result['regyinfo']['type']))
$result['regyinfo']['type'] = 'domain';
// Add error information if any
if (isset($this->Query['errstr']))
$result['errstr'] = $this->Query['errstr'];
// If no rawdata use rawdata from first whois server
if (!isset($result['rawdata']))
$result['rawdata'] = $output;
// Fix/add nameserver information
if (method_exists($this,'FixResult') && $this->Query['tld']!='ip')
$this->FixResult($result,$string);
return($result);
}
/*
* Convert html output to plain text
*/
function httpQuery ($query) {
$lines = file($this->Query['server']);
$output = '';
$pre = '';
while (list($key, $val)=each($lines)) {
$val = trim($val);
$pos=strpos(strtoupper($val),'<PRE>');
if ($pos!==false) {
$pre = "\n";
$output.=substr($val,0,$pos)."\n";
$val = substr($val,$pos+5);
}
$pos=strpos(strtoupper($val),'</PRE>');
if ($pos!==false) {
$pre = '';
$output.=substr($val,0,$pos)."\n";
$val = substr($val,$pos+6);
}
$output.=$val.$pre;
}
$search = array (
'<BR>', '<P>', '</TITLE>',
'</H1>', '</H2>', '</H3>',
'<br>', '<p>', '</title>',
'</h1>', '</h2>', '</h3>' );
$output = str_replace($search,"\n",$output);
$output = str_replace('<TD',' <td',$output);
$output = str_replace('<td',' <td',$output);
$output = str_replace('<tr',"\n<tr",$output);
$output = str_replace('<TR',"\n<tr",$output);
$output = str_replace(' ',' ',$output);
$output = html_entity_decode($output);
$output = explode("\n",strip_tags($output));
$rawdata = array();
$null = 0;
while (list($key, $val)=each($output)) {
$val=trim($val);
if ($val=='') {
if (++$null>2) continue;
}
else $null=0;
$rawdata[]=$val;
}
return $rawdata;
}
/*
* Open a socket to the whois server.
*
* Returns a socket connection pointer on success, or -1 on failure.
*/
function Connect ($server = '') {
if ($server == '')
$server = $this->Query['server'];
// Fail if server not set
if($server == '')
return(-1);
// Get rid of protocol and/or get port
$port = $this->PORT;
$pos = strpos($server,'://');
if ($pos !== false)
$server = substr($server, $pos+3);
$pos = strpos($server,':');
if ($pos !== false)
{
$port = substr($server,$pos+1);
$server = substr($server,0,$pos);
}
// Enter connection attempt loop
$retry = 0;
while($retry <= $this->RETRY) {
// Set query status
$this->Query['status'] = 'ready';
// Connect to whois port
$ptr = @fsockopen($server, $port);
if($ptr > 0) {
$this->Query['status']='ok';
return($ptr);
}
// Failed this attempt
$this->Query['status'] = 'error';
$retry++;
// Sleep before retrying
sleep($this->SLEEP);
}
// If we get this far, it hasn't worked
return(-1);
}
/*
* Post-process result with handler class. On success, returns the result
* from the handler. On failure, returns passed in result unaltered.
*/
function Process (&$result) {
// If the handler has not already been included somehow, include it now
$HANDLER_FLAG = sprintf("__%s_HANDLER__", strtoupper($this->Query['handler']));
if(!defined($HANDLER_FLAG))
include($this->Query['file']);
// If the handler has still not been included, append to query errors list and return
if(!defined($HANDLER_FLAG)) {
$this->Query['errstr'][] = "Can't find ".$this->Query['tld'].' handler: '.$this->Query["file"];
return($result);
}
if (!$this->gtld_recurse && $this->Query['file']=='whois.gtld.php')
return $result;
// Pass result to handler
$object = $this->Query['handler'].'_handler';
$handler = new $object('');
// If handler returned an error, append it to the query errors list
if(isSet($handler->Query['errstr']))
$this->Query['errstr'][] = $handler->Query['errstr'];
// Return the result
return $handler->parse($result,$this->Query['string']);
}
}
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