<?php
// $Id: auth_ads.php 1029 2007-09-09 03:49:25Z phppp $
// auth_ads.php - Authentification class for Active Directory
//  ------------------------------------------------------------------------ //
//                XOOPS - PHP Content Management System                      //
//                    Copyright (c) 2000 XOOPS.org                           //
//                       <http://www.xoops.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.                                      //
//                                                                           //
//  You may not change or alter any portion of this comment or credits       //
//  of supporting developers from this source code or any supporting         //
//  source code which is considered copyrighted (c) material of the          //
//  original comment or credit authors.                                      //
//                                                                           //
//  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 //
//  ------------------------------------------------------------------------ //

/**
 * Authentification class for Active Directory
 *  
 * @package     kernel
 * @subpackage  auth
 * @author	    Pierre-Eric MENUET	<pemphp@free.fr>
 * @copyright	copyright (c) 2000-2003 XOOPS.org
 */
include_once XOOPS_ROOT_PATH . '/class/auth/auth_ldap.php';
 
class XoopsAuthAds extends XoopsAuthLdap {

   	/**
  	 * Authentication Service constructor
  	 */
    function XoopsAuthAds (&$dao) {
  		parent::XoopsAuthLdap($dao);
    }

    /**
  	 *  Authenticate  user again LDAP directory (Bind)
  	 *  2 options : 
  	 * 		Authenticate directly with uname in the DN
  	 * 		Authenticate with manager, search the dn
  	 *
  	 * @param string $uname Username
  	 * @param string $pwd Password
  	 *
  	 * @return bool
  	 */	
    function authenticate($uname, $pwd = null) {
        $authenticated = false;
        if (!extension_loaded('ldap')) {
            $this->setErrors(0, _AUTH_LDAP_EXTENSION_NOT_LOAD);
            return $authenticated;
        }
        $this->_ds = ldap_connect($this->ldap_server, $this->ldap_port);
        if ($this->_ds) {
            ldap_set_option($this->_ds, LDAP_OPT_PROTOCOL_VERSION, $this->ldap_version);
            ldap_set_option($this->_ds, LDAP_OPT_REFERRALS, 0);
            if ($this->ldap_use_TLS) { // We use TLS secure connection
	   			if (!ldap_start_tls($this->_ds))
					$this->setErrors(0, _AUTH_LDAP_START_TLS_FAILED);
            }            
            // If the uid is not in the DN we proceed to a search
            // The uid is not always in the dn
            $userUPN = $this->getUPN($uname);
            if (!$userUPN) return false;
            // We bind as user to test the credentials         
            $authenticated = ldap_bind($this->_ds, $userUPN, $this->cp1252_to_utf8(stripslashes($pwd)));
            if ($authenticated) {
            	// We load the Xoops User database
            	$dn = $this->getUserDN($uname);
            	if ($dn)
            		return $this->loadXoopsUser($dn, $uname, $pwd);
            	else return false;                
            } else $this->setErrors(ldap_errno($this->_ds), ldap_err2str(ldap_errno($this->_ds)) . '(' . $userUPN . ')');
        }
        else {
            $this->setErrors(0, _AUTH_LDAP_SERVER_NOT_FOUND);              
        }
        @ldap_close($this->_ds);
        return $authenticated;
    }

    /**
  	 *  Return the UPN = userPrincipalName (Active Directory)
  	 *  userPrincipalName = guyt@CP.com    Often abbreviated to UPN, and 
  	 *  looks like an email address.  Very useful for logging on especially in 
  	 *  a large Forest.   Note UPN must be unique in the forest.
  	 * 
  	 *  @return userDN or false
  	 */	    
    function getUPN($uname) {
    	$userDN = false;
	    $userDN = $uname."@".$this->ldap_domain_name;
	    return $userDN;
    }
      
} // end class

?>