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<?php
/**
* @author Arthur Schiwon <blizzz@owncloud.com>
* @author Brice Maron <brice@bmaron.net>
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
* @author Lukas Reschke <lukas@owncloud.com>
* @author Morris Jobke <hey@morrisjobke.de>
* @author Thomas Müller <thomas.mueller@tmit.eu>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @copyright Copyright (c) 2016, ownCloud, Inc.
* @license AGPL-3.0
*
* This code is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, version 3,
* as published by the Free Software Foundation.
*
* 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License, version 3,
* along with this program. If not, see <http://www.gnu.org/licenses/>
*
*/
namespace OCA\user_ldap\lib;
use OCA\user_ldap\User_Proxy;
class Helper {
/**
* returns prefixes for each saved LDAP/AD server configuration.
* @param bool $activeConfigurations optional, whether only active configuration shall be
* retrieved, defaults to false
* @return array with a list of the available prefixes
*
* Configuration prefixes are used to set up configurations for n LDAP or
* AD servers. Since configuration is stored in the database, table
* appconfig under appid user_ldap, the common identifiers in column
* 'configkey' have a prefix. The prefix for the very first server
* configuration is empty.
* Configkey Examples:
* Server 1: ldap_login_filter
* Server 2: s1_ldap_login_filter
* Server 3: s2_ldap_login_filter
*
* The prefix needs to be passed to the constructor of Connection class,
* except the default (first) server shall be connected to.
*
*/
public function getServerConfigurationPrefixes($activeConfigurations = false) {
$referenceConfigkey = 'ldap_configuration_active';
$sql = '
SELECT DISTINCT `configkey`
FROM `*PREFIX*appconfig`
WHERE `appid` = \'user_ldap\'
AND `configkey` LIKE ?
';
if($activeConfigurations) {
if (\OC::$server->getConfig()->getSystemValue( 'dbtype', 'sqlite' ) === 'oci') {
//FIXME oracle hack: need to explicitly cast CLOB to CHAR for comparison
$sql .= ' AND to_char(`configvalue`)=\'1\'';
} else {
$sql .= ' AND `configvalue` = \'1\'';
}
}
$stmt = \OCP\DB::prepare($sql);
$serverConfigs = $stmt->execute(array('%'.$referenceConfigkey))->fetchAll();
$prefixes = array();
foreach($serverConfigs as $serverConfig) {
$len = strlen($serverConfig['configkey']) - strlen($referenceConfigkey);
$prefixes[] = substr($serverConfig['configkey'], 0, $len);
}
return $prefixes;
}
/**
*
* determines the host for every configured connection
* @return array an array with configprefix as keys
*
*/
public function getServerConfigurationHosts() {
$referenceConfigkey = 'ldap_host';
$query = '
SELECT DISTINCT `configkey`, `configvalue`
FROM `*PREFIX*appconfig`
WHERE `appid` = \'user_ldap\'
AND `configkey` LIKE ?
';
$query = \OCP\DB::prepare($query);
$configHosts = $query->execute(array('%'.$referenceConfigkey))->fetchAll();
$result = array();
foreach($configHosts as $configHost) {
$len = strlen($configHost['configkey']) - strlen($referenceConfigkey);
$prefix = substr($configHost['configkey'], 0, $len);
$result[$prefix] = $configHost['configvalue'];
}
return $result;
}
/**
* deletes a given saved LDAP/AD server configuration.
* @param string $prefix the configuration prefix of the config to delete
* @return bool true on success, false otherwise
*/
public function deleteServerConfiguration($prefix) {
if(!in_array($prefix, self::getServerConfigurationPrefixes())) {
return false;
}
$saveOtherConfigurations = '';
if(empty($prefix)) {
$saveOtherConfigurations = 'AND `configkey` NOT LIKE \'s%\'';
}
$query = \OCP\DB::prepare('
DELETE
FROM `*PREFIX*appconfig`
WHERE `configkey` LIKE ?
'.$saveOtherConfigurations.'
AND `appid` = \'user_ldap\'
AND `configkey` NOT IN (\'enabled\', \'installed_version\', \'types\', \'bgjUpdateGroupsLastRun\')
');
$delRows = $query->execute(array($prefix.'%'));
if(\OCP\DB::isError($delRows)) {
return false;
}
if($delRows === 0) {
return false;
}
return true;
}
/**
* checks whether there is one or more disabled LDAP configurations
* @throws \Exception
* @return bool
*/
public function haveDisabledConfigurations() {
$all = $this->getServerConfigurationPrefixes(false);
$active = $this->getServerConfigurationPrefixes(true);
if(!is_array($all) || !is_array($active)) {
throw new \Exception('Unexpected Return Value');
}
return count($all) !== count($active) || count($all) === 0;
}
/**
* extracts the domain from a given URL
* @param string $url the URL
* @return string|false domain as string on success, false otherwise
*/
public function getDomainFromURL($url) {
$uinfo = parse_url($url);
if(!is_array($uinfo)) {
return false;
}
$domain = false;
if(isset($uinfo['host'])) {
$domain = $uinfo['host'];
} else if(isset($uinfo['path'])) {
$domain = $uinfo['path'];
}
return $domain;
}
/**
* listens to a hook thrown by server2server sharing and replaces the given
* login name by a username, if it matches an LDAP user.
*
* @param array $param
* @throws \Exception
*/
public static function loginName2UserName($param) {
if(!isset($param['uid'])) {
throw new \Exception('key uid is expected to be set in $param');
}
//ain't it ironic?
$helper = new Helper();
$configPrefixes = $helper->getServerConfigurationPrefixes(true);
$ldapWrapper = new LDAP();
$ocConfig = \OC::$server->getConfig();
$userBackend = new User_Proxy(
$configPrefixes, $ldapWrapper, $ocConfig
);
$uid = $userBackend->loginName2UserName($param['uid'] );
if($uid !== false) {
$param['uid'] = $uid;
}
}
}
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