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<?php
#CMS - CMS Made Simple
#(c)2007 - 2008 by Michelangelo Turillo (mturillo@gmail.com)
# Copyright (c) 2004 - 2005, Olaf Lederer
#This project's homepage is: http://cmsmadesimple.sf.net
#
#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

function smarty_cms_function_whois($params, &$smarty)
{
	global $gCms;
	$pageinfo = &$gCms->variables['pageinfo'];
	$config = &$gCms->GetConfig();
	if (isset($pageinfo) && $pageinfo->content_id == -1)
	{
		#We've a custom error message...  set a current timestamp
		return "404 Error";
	}
	else
	{
		$result = CreateForm();
		return $result;
	}
}

function smarty_cms_help_function_whois() {
	?>
	<h3>What does this do?</h3>
	<p>Prints the whois of a domain.</p>
	<h3>How do I use it?</h3>
	<p>Just insert the tag into your template/page like: <code>{whois}</code></p>
	<h3>What parameters does it take?</h3>
	<p>None at this time.</p>
	<?php
}

function smarty_cms_about_function_whois() {
	?>
	<p>Author: Michelangelo Turillo <mturillo@gmail.com></p>
	<p>Version: 1.0</p>
	<p>
	Change History:<br/>
	None
	</p>
	<?php
}

function CreateForm()
{

	// ADD HERE A SERVER 
	$servers['eu']['address'] = "whois.eu";
	$servers['eu']['free'] = "not found in database";
	$servers['eu']['param'] = "";

	$servers['it']['address'] = "whois.nic.it";
	$servers['it']['free'] = "not found in database";
	$servers['it']['param'] = "";

	$servers['com']['address'] = "whois.crsnic.net";
	$servers['com']['free'] = "No match for";
	$servers['com']['param'] = "";

	$servers['net']['address'] = "whois.crsnic.net";
	$servers['net']['free'] = "No match for";
	$servers['net']['param'] = "";

	$servers['org']['address'] = "whois.pir.org";
	$servers['org']['free'] = "NOT FOUND";
	$servers['org']['param'] = "";

	$servers['name']['address'] = "whois.nic.name";
	$servers['name']['free'] = "No match";
	$servers['name']['param'] = "";

	$servers['biz']['address'] = "whois.nic.biz";
	$servers['biz']['free'] = "Not found";
	$servers['biz']['param'] = "";

	$servers['info']['address'] = "whois.afilias.net";
	$servers['info']['free'] = "NOT FOUND";
	$servers['info']['param'] = "";

	$servers['nl']['address'] = "whois.domain-registry.nl";
	$servers['nl']['free'] = "is free";
	$servers['nl']['param'] = "is "; // is used only for free check

	$servers['be']['address'] = "whois.dns.be";
	$servers['be']['free'] = "free";
	$servers['be']['param'] = "";

	$servers['de']['address'] = "whois.denic.de";
	$servers['de']['free'] = "not found in database";
	$servers['de']['param'] = "-T dn "; // required!!

	// error_reporting(E_ALL);
	$my_whois = new Whois_domain;
	$my_whois->possible_tlds = array_keys($servers); // this is the array from the included server list

	if (isset($_POST['submit'])) {
		$my_whois->tld = $_POST['tld'];
		$my_whois->domain = $_POST['domain'];
		$my_whois->free_string = $servers[$_POST['tld']]['free'];
		$my_whois->whois_server = $servers[$_POST['tld']]['address'];
		$my_whois->whois_param = $servers[$_POST['tld']]['param'];
		$my_whois->full_info = (isset($_POST['all_info'])) ? $_POST['all_info'] : "no"; // between "no" and "yes" to get all whois information
		$my_whois->process();
	}

	$result = '<h2>Check availability of Domain name</h2><p>Check if the domain is already taken.<br>If the result for a query is negative that a standard message is given. <br><br>Enter here the name for a domain name what you want to check<br>and select the type of tld you want to check.</p>
	  <form action="http://' . $_SERVER['SERVER_NAME']  . $_SERVER['PHP_SELF'] ."?". $_SERVER['QUERY_STRING'] . '" method="post" name="form">
	    http://www.<input type="text" name="domain" size="14" maxlength="63" value="';
		$result .= (isset($_POST['domain'])) ? $_POST['domain'] : ""; 
		$result .='">.';
	    $result .= $my_whois->create_tld_select(); // this method generates the select menu woth all tld\'s 
	    $result .='<br><br>
	    Show all info? <input name="all_info" type="checkbox" value="yes">
	    <input name="submit" type="submit" value="Whois">		  
	  </form>
	  
	  ';

	$result .= '<p>' . ($my_whois->msg != "") ? $my_whois->msg : "";
	$result .= '</p>';

	if ($my_whois->info != "") {
		$result .= '<h2>Whois '.$my_whois->compl_domain.'?</h2><textarea id="whoisarea" rows="10" cols="50">';
		$result .= nl2br($my_whois->info);
		$result .= '</textarea>';
	}
	return $result;
}

class Whois_domain {

	var $possible_tlds;
	var $whois_server;
	var $free_string;
	var $whois_param;
	var $domain;
	var $tld;
	var $compl_domain;
	var $full_info;
	var $msg;
	var $info;
	var $os_system = "linux"; // switch between "linux" and "win"

	function Whois_domain() {
		$this->info = "";
		$this->msg = "";
	}
	function process() {
		if ($this->create_domain()) {
			if ($this->full_info == "yes") {
				$this->get_domain_info();
			} else {
				if ($this->check_only() == 1) {
					$this->msg = "The domain name: <b>".$this->compl_domain."</b> is free.";
					return true;
				} elseif ($this->check_only() == 0) {
					$this->msg = "The domain name: <b>".$this->compl_domain."</b> is registered";
					return false;
				} else {
					$this->msg = "There was something wrong, try it agian.";
				}
			}
		} else {
			$this->msg = "Only letters, numbers and hyphens (-) are valid!";
		}
	}
	function check_entry() {
		if (preg_match("/^([A-Za-z0-9]+(\-?[A-za-z0-9]*)){2,63}$/", $this->domain)) {
			return true;
		} else {
			return false;
		}
	}
	function create_tld_select() {
		$menu = "<select name=\"tld\" style=\"margin-left:0;\">\n";
		foreach ($this->possible_tlds as $val) {
			$menu .= "  <option value=\"".$val."\"";
			$menu .= (isset($_POST['tld']) && $_POST['tld'] == $val) ? " selected>" : ">";
			$menu .= $val."\n";
		}
		$menu .= "</select>\n";
		return $menu;
	}
	function create_domain() {
		if ($this->check_entry()) {
			$this->domain = strtolower($this->domain);
			$this->compl_domain = $this->domain.".".$this->tld;
			return true;
		} else {
			return false;
		}
	}
	function check_only() {
		$data = $this->get_whois_data();
		if (is_array($data)) {
			$found = 0;
			foreach ($data as $val) {
				if (eregi($this->free_string, $val)) {
					$found = 1;
				}
			}
			return $found;
		} else {
			$this->msg = "Error, please try it again.";
		}
	}
	function get_domain_info() {
		if ($this->create_domain()) {
			$data = ($this->tld == "nl") ? $this->get_whois_data(true) : $this->get_whois_data();
			if (is_array($data)) {
				foreach ($data as $val) {
					if (eregi($this->free_string, $val)) {
						$this->msg = "The domain name: <b>".$this->compl_domain."</b> is free.";
						$this->info = "";
						break;
					}
					$this->info .= $val;
				}
			} else {
				$this->msg = "Error, please try it again.";
			}
		} else {
			$this->msg = "Only letters, numbers and hyphens (-) are valid!";
		}
	}
	function get_whois_data($empty_param = false) {
		// the parameter is new since version 1.20 and is used for .nl (dutch) domains only
		if ($empty_param) {
			$this->whois_param = "";
		}
		if ($this->tld == "de") $this->os_system = "win"; // this tld must be queried with fsock otherwise it will not work
		if ($this->os_system == "win") {
			$connection = @fsockopen($this->whois_server, 43);
			if (!$connection) {
				unset($connection);
				$this->msg = "Can't connect to the server!";
				return;
			} else {
				sleep(2);
				fputs($connection, $this->whois_param.$this->compl_domain."\r\n");
				while (!feof($connection)) {
					$buffer[] = fgets($connection, 4096);
				}
				fclose($connection);
			}
		} else {
			$string = "whois -h ".$this->whois_server." \"".$this->whois_param.$this->compl_domain."\"";
			exec($string, $buffer);
		}
		if (isset($buffer)) {
			//print_r($buffer);
			return $buffer;
		} else {
			$this->msg = "Can't retrieve data from the server!";
		}
	}
}
?>