<?php
/**
 * @file includes/ldap.inc
 * @brief LDAP Library
 * @author Kenneth Smith <hide@address.com>
 *
 * Modularized Information Environment (MIE)
 * Copyright (C) 2005-2006 by Kenneth Smith. All rights reserved.
 *
 * 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.
 *
 * 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.
 */

defined('VALIE_MIE') || die(_('Direct access not allowed'));
defined('LDAP_INC') && exit;
define('LDAP_INC', true);

class LDAP{
	public $base;
	public $option;
	public $link;

	function __construct($_url, $_option = array()) {
		$this->base = parse_url($_url);
		$this->base['dn'] = isset($this->base['path']) ? basename($this->base['path']) : '';
		$this->option = $_option;
		$this->link = null;
	}

	function __destruct() {
		$this->close();
	}

	function open() {
		if($this->link) {
			return $this->link;
		}
		if(isset($this->base['port'])) {
			if(!$this->link = ldap_connect($this->base['host'], $this->base['port'])) {
				die(ldap_error($this->link));
			}
		}
		else{
			if(!$this->link = ldap_connect($this->base['host'])) {
				die(ldap_error($this->link));
			}
		}
		if(isset($this->option['protocol'])) {
			if(!ldap_set_option($this->link, LDAP_OPT_PROTOCOL_VERSION, $this->option['protocol'])) {
				die(ldap_error($this->link));
			}
		}
		if(isset($this->base['user']) && isset($this->base['pass'])) {
			if(!ldap_bind($this->link, $this->base['user'], $this->base['pass'])) {
				die(ldap_error($this->link));
			}
		}
	}

	function close() {
		if($this->link == null)return;
		if(!ldap_close($this->link)) {
			die(ldap_error($this->link));
		}
		$this->link = null;
	}

	function bind($_bind_dn, $_bind_pw) {
		$this->open();
		error_reporting(0);
		return @ldap_bind($this->link, $_bind_dn, $_bind_pw);
	}

	function get_dn($_criteria) {
		$this->open();
		$search = ldap_search($this->link, $this->base['dn'], $_criteria);
		if(ldap_count_entries($this->link, $search) != 1) {
			return;
		}
		return ldap_get_dn($this->link, ldap_first_entry($this->link, $search));
	}

	function entries($_criteria) {
		$this->open();
		return ldap_count_entries($this->link, ldap_search($this->link, $this->base['dn'], $_criteria));
	}

	function search($_criteria, $_maximum = 0) {
		$this->open();
		$entry = ldap_first_entry($this->link, ldap_search($this->link, $this->base['dn'], $_criteria));
		if(!$entry) {
			return;
		}
		$cnt = 0;
		do {
			$ret[$cnt] = ldap_get_attributes($this->link, $entry);
			$cnt++;
			if($cnt == $_maximum) {
				break;
			}
		}while($entry = ldap_next_entry($this->link, $entry));
		return $ret;
	}
}

?>