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<?php
/**
* ownCloud – LDAP lib
*
* @author Arthur Schiwon
* @copyright 2012 Arthur Schiwon blizzz@owncloud.com
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 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 AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
define('LDAP_GROUP_MEMBER_ASSOC_ATTR','memberUid');
//needed to unbind, because we use OC_LDAP only statically
class OC_LDAP_DESTRUCTOR {
public function __destruct() {
OC_LDAP::destruct();
}
}
class OC_LDAP {
static protected $ldapConnectionRes = false;
static protected $configured = false;
//cached settings
static protected $ldapHost;
static protected $ldapPort;
static protected $ldapBase;
static protected $ldapAgentName;
static protected $ldapAgentPassword;
static protected $ldapTLS;
static protected $ldapNoCase;
// user and group settings, that are needed in both backends
static public $ldapUserDisplayName;
static public function init() {
self::readConfiguration();
self::establishConnection();
}
static public function destruct() {
@ldap_unbind(self::$ldapConnectionRes);
}
static public function conf($key) {
$availableProperties = array(
'ldapUserDisplayName',
);
if(in_array($key, $availableProperties)) {
return self::$$key;
}
}
/**
* @brief executes an LDAP search
* @param $filter the LDAP filter for the search
* @param $attr optional, when a certain attribute shall be filtered out
* @returns array with the search result
*
* Executes an LDAP search
*/
static public function search($filter, $attr = null) {
$sr = ldap_search(self::getConnectionResource(), self::$ldapBase, $filter);
$findings = ldap_get_entries(self::getConnectionResource(), $sr );
if(!is_null($attr)) {
$selection = array();
foreach($findings as $item) {
if(isset($item[strtolower($attr)])) {
$selection[] = $item[strtolower($attr)][0];
}
}
return $selection;
}
return $findings;
}
/**
* @brief combines the input filters with AND
* @param $filters array, the filters to connect
* @returns the combined filter
*
* Combines Filter arguments with AND
*/
static public function combineFilterWithAnd($filters) {
return self::combineFilter($filters,'&');
}
/**
* @brief combines the input filters with AND
* @param $filters array, the filters to connect
* @returns the combined filter
*
* Combines Filter arguments with AND
*/
static public function combineFilterWithOr($filters) {
return self::combineFilter($filters,'|');
}
/**
* @brief combines the input filters with given operator
* @param $filters array, the filters to connect
* @param $operator either & or |
* @returns the combined filter
*
* Combines Filter arguments with AND
*/
static private function combineFilter($filters, $operator) {
$combinedFilter = '('.$operator;
foreach($filters as $filter) {
if(substr($filter,0,1) != '(') {
$filter = '('.$filter.')';
}
$combinedFilter.=$filter;
}
$combinedFilter.=')';
return $combinedFilter;
}
/**
* Returns the LDAP handler
*/
static private function getConnectionResource() {
if(!self::$ldapConnectionRes) {
self::init();
}
return self::$ldapConnectionRes;
}
/**
* Caches the general LDAP configuration.
*/
static private function readConfiguration() {
if(!self::$configured) {
self::$ldapHost = OC_Appconfig::getValue('user_ldap', 'ldap_host', '');
self::$ldapPort = OC_Appconfig::getValue('user_ldap', 'ldap_port', OC_USER_BACKEND_LDAP_DEFAULT_PORT);
self::$ldapAgentName = OC_Appconfig::getValue('user_ldap', 'ldap_dn','');
self::$ldapAgentPassword = OC_Appconfig::getValue('user_ldap', 'ldap_password','');
self::$ldapBase = OC_Appconfig::getValue('user_ldap', 'ldap_base','');
self::$ldapTLS = OC_Appconfig::getValue('user_ldap', 'ldap_tls',0);
self::$ldapNoCase = OC_Appconfig::getValue('user_ldap', 'ldap_nocase', 0);
self::$ldapUserDisplayName = OC_Appconfig::getValue('user_ldap', 'ldap_display_name', OC_USER_BACKEND_LDAP_DEFAULT_DISPLAY_NAME);
if(
!empty(self::$ldapHost)
&& !empty(self::$ldapPort)
&& (
(!empty(self::$ldapAgentName) && !empty(self::$ldapAgentPassword))
|| ( empty(self::$ldapAgentName) && empty(self::$ldapAgentPassword))
)
&& !empty(self::$ldapBase)
&& !empty(self::$ldapUserDisplayName)
)
{
self::$configured = true;
}
}
}
/**
* Connects and Binds to LDAP
*/
static private function establishConnection() {
if(!self::$configured) {
return false;
}
if(!self::$ldapConnectionRes) {
self::$ldapConnectionRes = ldap_connect(self::$ldapHost, self::$ldapPort);
if(ldap_set_option(self::$ldapConnectionRes, LDAP_OPT_PROTOCOL_VERSION, 3)) {
if(ldap_set_option(self::$ldapConnectionRes, LDAP_OPT_REFERRALS, 0)) {
if(self::$ldapTLS) {
ldap_start_tls(self::$ldapConnectionRes);
}
}
}
$ldapLogin = @ldap_bind(self::$ldapConnectionRes, self::$ldapAgentName, self::$ldapAgentPassword );
if(!$ldapLogin) {
return false;
}
}
}
}
|
