<?php
  /**************************************************************************\
  * phpGroupWare API - Auth from LDAP                                        *
  * This file written by Lars Kneschke <kneschke@phpgroupware.org>           *
  * and Joseph Engo <jengo@phpgroupware.org>                                 *
  * Authentication based on LDAP Server                                      *
  * Copyright (C) 2000, 2001 Joseph Engo                                     *
  * -------------------------------------------------------------------------*
  * This library is part of the phpGroupWare API                             *
  * http://www.phpgroupware.org/api                                          * 
  * ------------------------------------------------------------------------ *
  * This library 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 2.1 of the License,         *
  * or any later version.                                                    *
  * This library 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 this library; if not, write to the Free Software Foundation,  *
  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA            *
  \**************************************************************************/

  /* $Id$ */
  
	class auth
	{
		function authenticate($username, $passwd) {
			global $phpgw_info, $phpgw;
			//  error_reporting MUST be set to zero, otherwise you'll get nasty LDAP errors with a bad login/pass...
			//  these are just "warnings" and can be ignored.....
			error_reporting(0); 

			$ldap = ldap_connect($phpgw_info['server']['ldap_host']);

			// find the dn for this uid, the uid is not always in the dn
			$sri = ldap_search($ldap, $phpgw_info['server']['ldap_context'], 'uid='.$username);
			$allValues = ldap_get_entries($ldap, $sri);
			if($allValues['count'] > 0)
			{
				// we only care about the first dn
				$userDN = $allValues[0]['dn'];

				// generate a bogus password to pass if the user doesn't give us one 
				// this gets around systems that are anonymous search enabled 
				if (empty($passwd)) $passwd = crypt(microtime()); 
					// try to bind as the user with user suplied password
					if (ldap_bind($ldap,$userDN, $passwd)) return True;
				}

				// Turn error reporting back to normal
				error_reporting(7);

				// dn not found or password wrong
				return False;
	}

	function change_password($old_passwd, $new_passwd, $_account_id="") 
	{
		global $phpgw_info, $phpgw;

		if ("" == $_account_id)
		{
			$_account_id = $phpgw_info['user']['account_id'];
		}

		$ds = $phpgw->common->ldapConnect();
		$sri = ldap_search($ds, $phpgw_info["server"]["ldap_context"], "uidnumber=$_account_id");
		$allValues = ldap_get_entries($ds, $sri);


		$entry['userpassword'] = $phpgw->common->encrypt_password($new_passwd);
		$dn = $allValues[0]["dn"];

		if (!@ldap_modify($ds, $dn, $entry)) 
		{
			return false;
		}

		return $encrypted_passwd;
	}

	function update_lastlogin($account_id, $ip)
	{
		global $phpgw;

		$account_id = get_account_id($account_id);
		$now = time();

		$phpgw->db->query("update phpgw_accounts set account_lastloginfrom='"
			. "$ip', account_lastlogin='" . $now
			. "' where account_id='$account_id'",__LINE__,__FILE__);
	}
}
?>