class.Radius.php

<?php

/*********************************************************************
 *
 * Pure PHP radius class
 *
 * This Radius class is a radius client implementation in pure PHP
 * following the RFC 2865 rules (http://www.ietf.org/rfc/rfc2865.txt)
 *
 * This class works with at least the following RADIUS servers:
 *  - Authenex Strong Authentication System (ASAS) with two-factor authentication
 *  - FreeRADIUS, a free Radius server implementation for Linux and *nix environments
 *  - Microsoft Radius server IAS
 *  - Mideye RADIUS server (http://www.mideye.com)
 *  - Radl, a free Radius server for Windows
 *  - RSA SecurID
 *  - VASCO Middleware 3.0 server
 *  - WinRadius, Windows Radius server (free for 5 users)
 *  - ZyXEL ZyWALL OTP (Authenex ASAS branded by ZyXEL, cheaper)
 *
 *
 * LICENCE
 *
 *   Copyright (c) 2008, SysCo systemes de communication sa
 *   SysCo (tm) is a trademark of SysCo systemes de communication sa
 *   (http://www.sysco.ch/)
 *   All rights reserved.
 *
 *   This file is part of the Pure PHP radius class
 *
 *   Pure PHP radius class is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU Lesser General Public License as
 *   published by the Free Software Foundation, either version 3 of the License,
 *   or (at your option) any later version.
 *
 *   Pure PHP radius class 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 Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with Pure PHP radius class.
 *   If not, see <http://www.gnu.org/licenses/>.
 *
 *
 * @author: SysCo/al
 * @since CreationDate: 2008-01-04
 * @copyright (c) 2008 by SysCo systemes de communication sa
 * @version $LastChangedRevision: 1.2.2 $
 * @version $LastChangedDate: 2009-01-05 $
 * @version $LastChangedBy: SysCo/al $
 * @link $HeadURL: radius.class.php $
 * @link http://developer.sysco.ch/php/
 * @link developer@sysco.ch
 * Language: PHP 4.0.7 or higher
 *
 *
 * Usage
 *
 *   require_once('radius.class.php');
 *   $radius = new Radius($ip_radius_server = 'radius_server_ip_address', $shared_secret = 'radius_shared_secret'[, $radius_suffix = 'optional_radius_suffix'[, $udp_timeout = udp_timeout_in_seconds[, $authentication_port = 1812]]]);
 *   $result = $radius->Access_Request($username = 'username', $password = 'password'[, $udp_timeout = udp_timeout_in_seconds]);
 *
 *
 * Examples
 *
 *   Example 1
 *     <?php
 *         require_once('radius.class.php');
 *         $radius = new Radius('127.0.0.1', 'secret');