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<?php
/**
* ownCloud – LDAP Backend Proxy
*
* @author Arthur Schiwon
* @copyright 2013 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/>.
*
*/
namespace OCA\user_ldap\lib;
use OCA\user_ldap\lib\Access;
use OCA\User_LDAP\Mapping\UserMapping;
use OCA\User_LDAP\Mapping\GroupMapping;
abstract class Proxy {
static private $accesses = array();
private $ldap = null;
/**
* @param ILDAPWrapper $ldap
*/
public function __construct(ILDAPWrapper $ldap) {
$this->ldap = $ldap;
$this->cache = \OC\Cache::getGlobalCache();
}
/**
* @param string $configPrefix
*/
private function addAccess($configPrefix) {
static $ocConfig;
static $fs;
static $log;
static $avatarM;
static $userMap;
static $groupMap;
static $db;
if(is_null($fs)) {
$ocConfig = \OC::$server->getConfig();
$fs = new FilesystemHelper();
$log = new LogWrapper();
$avatarM = \OC::$server->getAvatarManager();
$db = \OC::$server->getDatabaseConnection();
$userMap = new UserMapping($db);
$groupMap = new GroupMapping($db);
}
$userManager =
new user\Manager($ocConfig, $fs, $log, $avatarM, new \OCP\Image(), $db);
$connector = new Connection($this->ldap, $configPrefix);
$access = new Access($connector, $this->ldap, $userManager);
$access->setUserMapper($userMap);
$access->setGroupMapper($groupMap);
self::$accesses[$configPrefix] = $access;
}
/**
* @param string $configPrefix
* @return mixed
*/
protected function getAccess($configPrefix) {
if(!isset(self::$accesses[$configPrefix])) {
$this->addAccess($configPrefix);
}
return self::$accesses[$configPrefix];
}
/**
* @param string $uid
* @return string
*/
protected function getUserCacheKey($uid) {
return 'user-'.$uid.'-lastSeenOn';
}
/**
* @param string $gid
* @return string
*/
protected function getGroupCacheKey($gid) {
return 'group-'.$gid.'-lastSeenOn';
}
/**
* @param string $id
* @param string $method
* @param array $parameters
* @param bool $passOnWhen
* @return mixed
*/
abstract protected function callOnLastSeenOn($id, $method, $parameters, $passOnWhen);
/**
* @param string $id
* @param string $method
* @param array $parameters
* @return mixed
*/
abstract protected function walkBackends($id, $method, $parameters);
/**
* Takes care of the request to the User backend
* @param string $id
* @param string $method string, the method of the user backend that shall be called
* @param array $parameters an array of parameters to be passed
* @param bool $passOnWhen
* @return mixed, the result of the specified method
*/
protected function handleRequest($id, $method, $parameters, $passOnWhen = false) {
$result = $this->callOnLastSeenOn($id, $method, $parameters, $passOnWhen);
if($result === $passOnWhen) {
$result = $this->walkBackends($id, $method, $parameters);
}
return $result;
}
/**
* @param string|null $key
* @return string
*/
private function getCacheKey($key) {
$prefix = 'LDAP-Proxy-';
if(is_null($key)) {
return $prefix;
}
return $prefix.md5($key);
}
/**
* @param string $key
* @return mixed|null
*/
public function getFromCache($key) {
if(!$this->isCached($key)) {
return null;
}
$key = $this->getCacheKey($key);
return unserialize(base64_decode($this->cache->get($key)));
}
/**
* @param string $key
* @return bool
*/
public function isCached($key) {
$key = $this->getCacheKey($key);
return $this->cache->hasKey($key);
}
/**
* @param string $key
* @param mixed $value
*/
public function writeToCache($key, $value) {
$key = $this->getCacheKey($key);
$value = base64_encode(serialize($value));
$this->cache->set($key, $value, '2592000');
}
public function clearCache() {
$this->cache->clear($this->getCacheKey(null));
}
}
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