<?php
//
// +---------------------------------------------------------------------------+
// | Nitro :: Condition                                                        |
// +---------------------------------------------------------------------------+
// | Copyright (c) 2003 June Systems BV                                        |
// +---------------------------------------------------------------------------+
// | This source file is copyrighted by June Systems BV, the Netherlands       |
// | If you would like to use this file in your projects, please contact       |
// | hide@address.com                                                     |
// +---------------------------------------------------------------------------+
// | Authors: Siggi Oskarsson <hide@address.com>                          |
// +---------------------------------------------------------------------------+
//
// $Id: Condition.inc.php 229 2008-04-17 09:20:31Z oli $
//
// This file contains the Condition functions and classes for Nitro
//

/**
 * This file contains the prototype Backend module definition
 *
 * @package	Nitro
 * @subpackage	Base
 * @author 		Siggi Oskarsson
 * @version 	$Revision: 1.4 $
 * @copyright	2004 June Systems BV
 */

/**
 * Check condition given
 *
 * This function uses the condition class to check whether the given
 * condition is true or not. It creates its own condition object if
 * it does not exist yet and globalizes it for later use.
 *
 * @param	string	$Condition	Condition to check for validity
 */
function CheckCondition($Condition) {
	global $__NitroCondition;
	if (!is_object($__NitroCondition)) {
		$__NitroCondition = new NitroCondition();
	}
	return $__NitroCondition->CheckCondition($Condition);
}

/**
 * Nitro condition class
 *
 * @package	Nitro
 * @subpackage	Base
 */
class NitroCondition {
	var $PageID;
	var $PageIDString;
	var $Site;
	var $TopLevelDomain;
	var $Domain;
	var $Host;
	var $RemoteURL;
	var $RemoteTopLevelDomain;
	var $RemoteDomain;
	var $RemoteHost;


	/**
	 * Nitro condition class constructor
	 *
	 * This function initializes the condition object and sets most of
	 * the values that can be used in condition checking.
	 * Properties set include:
	 * - PageID
	 * - PageIDString
	 * - Site (www.foobar.com)
	 * - TLD (com)
	 * - Domain (foobar.com)
	 * - Host (www.foobar.com), same as Site
	 * - RemoteURL, remote address of user
	 * - RemoteTLD, remote TLD of user
	 * - RemoteDomain, remote domain of user
	 * - RemoteHost, remote host of user
	 *
	 * @access	public
	 */
	function NitroCondition() {
		$this->PageID = "";
		$this->PageIDString = "";
		$this->Site = $_SERVER["HTTP_HOST"];
		$Domains = explode(".", $this->Site);
		$this->TopLevelDomain = array_pop($Domains);
		$this->Domain = array_pop($Domains).".".$this->TopLevelDomain;
		$this->Host = implode(".", $Domains);

		$this->RemoteURL = gethostbyaddr ($_SERVER["REMOTE_ADDR"]);
		$Domains = explode(".", $this->RemoteURL);
		$this->RemoteTopLevelDomain = array_pop($Domains);
		$this->RemoteDomain = array_pop($Domains).".".$this->RemoteTopLevelDomain;
		$this->RemoteHost = implode(".", $Domains);
	}
	
	/**
	 * Evaluate condition
	 *
	 * This function calls the eval function on the condition to evaluate
	 * if it is true or false.
	 */
	function CheckCondition($Condition) {
		return eval("return ".$Condition.";");
	}
	
	function GetConfiguration() {
		$RV = Array("Host" => "Host",
								"Domain" => "Domain",
								"TopLevelDomain" => "Top Level Domain"
								);
	}
}
?>