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<?php

/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4 foldmethod=marker: */

/**

 * Storage driver for use against RADIUS servers

 *

 * PHP versions 4 and 5

 *

 * LICENSE: This source file is subject to version 3.01 of the PHP license

 * that is available through the world-wide-web at the following URI:

 * http://www.php.net/license/3_01.txt.  If you did not receive a copy of

 * the PHP License and are unable to obtain it through the web, please

 * send a note to license@php.net so we can mail you a copy immediately.

 *

 * @category   Authentication

 * @package    Auth

 * @author     Michael Bretterklieber <michael@bretterklieber.com>

 * @author     Adam Ashley <aashley@php.net>

 * @copyright  2001-2006 The PHP Group

 * @license    http://www.php.net/license/3_01.txt  PHP License 3.01

 * @version    CVS: $Id: RADIUS.php,v 1.3 2007-11-19 15:11:00 jp_milcent Exp $

 * @link       http://pear.php.net/package/Auth

 * @since      File available since Release 1.2.0

 */

/**

 * Include Auth_Container base class

 */

require_once "Auth/Container.php";

/**

 * Include PEAR Auth_RADIUS package

 */

require_once "Auth/RADIUS.php";

/**

 * Storage driver for authenticating users against RADIUS servers.

 *

 * @category   Authentication

 * @package    Auth

 * @author     Michael Bretterklieber <michael@bretterklieber.com>

 * @author     Adam Ashley <aashley@php.net>

 * @copyright  2001-2006 The PHP Group

 * @license    http://www.php.net/license/3_01.txt  PHP License 3.01

 * @version    Release: 1.5.4  File: $Revision: 1.3 $

 * @link       http://pear.php.net/package/Auth

 * @since      Class available since Release 1.2.0

 */

class Auth_Container_RADIUS extends Auth_Container

{

    // {{{ properties

    /**

     * Contains a RADIUS object

     * @var object

     */

    var $radius;

    /**

     * Contains the authentication type

     * @var string

     */

    var $authtype;

    // }}}

    // {{{ Auth_Container_RADIUS() [constructor]

    /**

     * Constructor of the container class.

     *

     * $options can have these keys:

     * 'servers'    an array containing an array: servername, port,

     *              sharedsecret, timeout, maxtries

     * 'configfile' The filename of the configuration file

     * 'authtype'   The type of authentication, one of: PAP, CHAP_MD5,

     *              MSCHAPv1, MSCHAPv2, default is PAP

     *

     * @param  $options associative array

     * @return object Returns an error object if something went wrong

     */

    function Auth_Container_RADIUS($options)

    {

        $this->authtype = 'PAP';

        if (isset($options['authtype'])) {

            $this->authtype = $options['authtype'];

        }

        $classname = 'Auth_RADIUS_' . $this->authtype;

        if (!class_exists($classname)) {

            PEAR::raiseError("Unknown Authtype, please use one of: "

                    ."PAP, CHAP_MD5, MSCHAPv1, MSCHAPv2!", 41, PEAR_ERROR_DIE);

        }

        $this->radius = new $classname;

        if (isset($options['configfile'])) {

            $this->radius->setConfigfile($options['configfile']);

        }

        $servers = $options['servers'];

        if (is_array($servers)) {

            foreach ($servers as $server) {

                $servername     = $server[0];

                $port           = isset($server[1]) ? $server[1] : 0;

                $sharedsecret   = isset($server[2]) ? $server[2] : 'testing123';

                $timeout        = isset($server[3]) ? $server[3] : 3;

                $maxtries       = isset($server[4]) ? $server[4] : 3;

                $this->radius->addServer($servername, $port, $sharedsecret, $timeout, $maxtries);

            }

        }

        if (!$this->radius->start()) {

            PEAR::raiseError($this->radius->getError(), 41, PEAR_ERROR_DIE);

        }

    }

    // }}}

    // {{{ fetchData()

    /**

     * Authenticate

     *

     * @param  string Username

     * @param  string Password

     * @return bool   true on success, false on reject

     */

    function fetchData($username, $password, $challenge = null)

    {

        $this->log('Auth_Container_RADIUS::fetchData() called.', AUTH_LOG_DEBUG);

        switch($this->authtype) {

            case 'CHAP_MD5':

            case 'MSCHAPv1':

                if (isset($challenge)) {

                    $this->radius->challenge = $challenge;

                    $this->radius->chapid    = 1;

                    $this->radius->response  = pack('H*', $password);

                } else {

                    require_once 'Crypt/CHAP.php';

                    $classname = 'Crypt_' . $this->authtype;

                    $crpt = new $classname;

                    $crpt->password = $password;

                    $this->radius->challenge = $crpt->challenge;

                    $this->radius->chapid    = $crpt->chapid;

                    $this->radius->response  = $crpt->challengeResponse();

                }

                break;

            case 'MSCHAPv2':

                require_once 'Crypt/CHAP.php';

                $crpt = new Crypt_MSCHAPv2;

                $crpt->username = $username;

                $crpt->password = $password;

                $this->radius->challenge     = $crpt->authChallenge;

                $this->radius->peerChallenge = $crpt->peerChallenge;

                $this->radius->chapid        = $crpt->chapid;

                $this->radius->response      = $crpt->challengeResponse();

                break;

            default:

                $this->radius->password = $password;

                break;

        }

        $this->radius->username = $username;

        $this->radius->putAuthAttributes();

        $result = $this->radius->send();

        if (PEAR::isError($result)) {

            return false;

        }

        $this->radius->getAttributes();

//      just for debugging

//      $this->radius->dumpAttributes();

        return $result;

    }

    // }}}

}

?>