add LDAP User and Group proxies to suppoer multiple servers
This commit is contained in:
Arthur Schiwon
parent
fab5817f67
commit
09c54722a8
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@ -0,0 +1,178 @@
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<?php
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/**
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* ownCloud
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*
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* @author Artuhr Schiwon
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* @copyright 2013 Arthur Schiwon blizzz@owncloud.com
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OCA\user_ldap;
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class Group_Proxy extends lib\Proxy implements \OCP\GroupInterface {
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private $backends = array();
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private $refBackend = null;
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/**
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* @brief Constructor
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* @param $serverConfigPrefixes array containing the config Prefixes
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*/
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public function __construct($serverConfigPrefixes) {
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parent::__construct();
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foreach($serverConfigPrefixes as $configPrefix) {
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$this->backends[$configPrefix] = new \OCA\user_ldap\GROUP_LDAP();
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$connector = $this->getConnector($configPrefix);
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$this->backends[$configPrefix]->setConnector($connector);
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if(is_null($this->refBackend)) {
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$this->refBackend = &$this->backends[$configPrefix];
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}
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}
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}
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/**
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* @brief Tries the backends one after the other until a positive result is returned from the specified method
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* @param $gid string, the gid connected to the request
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* @param $method string, the method of the group backend that shall be called
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* @param $parameters an array of parameters to be passed
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* @return mixed, the result of the method or false
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*/
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protected function walkBackends($gid, $method, $parameters) {
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$cacheKey = $this->getGroupCacheKey($gid);
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foreach($this->backends as $configPrefix => $backend) {
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if($result = call_user_func_array(array($backend, $method), $parameters)) {
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$this->writeToCache($cacheKey, $configPrefix);
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return $result;
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}
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}
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return false;
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}
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/**
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* @brief Asks the backend connected to the server that supposely takes care of the gid from the request.
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* @param $gid string, the gid connected to the request
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* @param $method string, the method of the group backend that shall be called
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* @param $parameters an array of parameters to be passed
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* @return mixed, the result of the method or false
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*/
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protected function callOnLastSeenOn($gid, $method, $parameters) {
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$cacheKey = $this->getGroupCacheKey($gid);;
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$prefix = $this->getFromCache($cacheKey);
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//in case the uid has been found in the past, try this stored connection first
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if(!is_null($prefix)) {
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if(isset($this->backends[$prefix])) {
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$result = call_user_func_array(array($this->backends[$prefix], $method), $parameters);
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if(!$result) {
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//not found here, reset cache to null
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$this->writeToCache($cacheKey, null);
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}
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return $result;
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}
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}
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return false;
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}
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/**
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* @brief is user in group?
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* @param $uid uid of the user
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* @param $gid gid of the group
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* @returns true/false
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*
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* Checks whether the user is member of a group or not.
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*/
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public function inGroup($uid, $gid) {
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return $this->handleRequest($gid, 'inGroup', array($uid, $gid));
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}
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/**
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* @brief Get all groups a user belongs to
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* @param $uid Name of the user
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* @returns array with group names
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*
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* This function fetches all groups a user belongs to. It does not check
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* if the user exists at all.
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*/
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public function getUserGroups($uid) {
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$groups = array();
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foreach($this->backends as $backend) {
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$backendGroups = $backend->getUserGroups($uid);
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if (is_array($backendGroups)) {
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$groups = array_merge($groups, $backendGroups);
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}
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}
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return $groups;
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}
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/**
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* @brief get a list of all users in a group
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* @returns array with user ids
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*/
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public function usersInGroup($gid, $search = '', $limit = -1, $offset = 0) {
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$users = array();
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foreach($this->backends as $backend) {
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$backendUsers = $backend->usersInGroup($gid, $search, $limit, $offset);
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if (is_array($backendUsers)) {
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$users = array_merge($users, $backendUsers);
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}
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}
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return $users;
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}
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/**
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* @brief get a list of all groups
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* @returns array with group names
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*
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* Returns a list with all groups
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*/
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public function getGroups($search = '', $limit = -1, $offset = 0) {
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$groups = array();
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foreach($this->backends as $backend) {
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$backendGroups = $backend->getGroups($search, $limit, $offset);
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if (is_array($backendGroups)) {
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$groups = array_merge($groups, $backendGroups);
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}
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}
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return $groups;
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}
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/**
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* check if a group exists
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* @param string $gid
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* @return bool
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*/
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public function groupExists($gid) {
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return $this->handleRequest($gid, 'groupExists', array($gid));
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}
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/**
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* @brief Check if backend implements actions
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* @param $actions bitwise-or'ed actions
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* @returns boolean
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*
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* Returns the supported actions as int to be
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* compared with OC_USER_BACKEND_CREATE_USER etc.
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*/
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public function implementsActions($actions) {
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//it's the same across all our user backends obviously
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return $this->refBackend->implementsActions($actions);
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}
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}
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@ -0,0 +1,104 @@
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<?php
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/**
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* ownCloud – LDAP Backend Proxy
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*
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* @author Arthur Schiwon
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* @copyright 2013 Arthur Schiwon blizzz@owncloud.com
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OCA\user_ldap\lib;
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abstract class Proxy {
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static private $connectors = array();
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public function __construct() {
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$this->cache = \OC_Cache::getGlobalCache();
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}
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private function addConnector($configPrefix) {
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self::$connectors[$configPrefix] = new \OCA\user_ldap\lib\Connection($configPrefix);
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}
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protected function getConnector($configPrefix) {
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if(!isset(self::$connectors[$configPrefix])) {
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$this->addConnector($configPrefix);
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}
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return self::$connectors[$configPrefix];
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}
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protected function getConnectors() {
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return self::$connectors;
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}
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protected function getUserCacheKey($uid) {
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return 'user-'.$uid.'-lastSeenOn';
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}
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protected function getGroupCacheKey($gid) {
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return 'group-'.$gid.'-lastSeenOn';
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}
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abstract protected function callOnLastSeenOn($id, $method, $parameters);
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abstract protected function walkBackends($id, $method, $parameters);
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/**
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* @brief Takes care of the request to the User backend
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* @param $uid string, the uid connected to the request
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* @param $method string, the method of the user backend that shall be called
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* @param $parameters an array of parameters to be passed
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* @return mixed, the result of the specified method
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*/
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protected function handleRequest($id, $method, $parameters) {
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if(!$result = $this->callOnLastSeenOn($id, $method, $parameters)) {
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$result = $this->walkBackends($id, $method, $parameters);
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}
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return $result;
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}
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private function getCacheKey($key) {
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$prefix = 'LDAP-Proxy-';
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if(is_null($key)) {
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return $prefix;
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}
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return $prefix.md5($key);
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}
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public function getFromCache($key) {
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if(!$this->isCached($key)) {
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return null;
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}
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$key = $this->getCacheKey($key);
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return unserialize(base64_decode($this->cache->get($key)));
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}
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public function isCached($key) {
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$key = $this->getCacheKey($key);
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return $this->cache->hasKey($key);
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}
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public function writeToCache($key, $value) {
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$key = $this->getCacheKey($key);
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$value = base64_encode(serialize($value));
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$this->cache->set($key, $value, '2592000');
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}
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public function clearCache() {
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$this->cache->clear($this->getCacheKey(null));
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}
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}
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@ -0,0 +1,159 @@
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<?php
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/**
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* ownCloud
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*
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* @author Artuhr Schiwon
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* @copyright 2013 Arthur Schiwon blizzz@owncloud.com
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
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* License as published by the Free Software Foundation; either
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* version 3 of the License, or any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU AFFERO GENERAL PUBLIC LICENSE for more details.
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*
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* You should have received a copy of the GNU Affero General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OCA\user_ldap;
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class User_Proxy extends lib\Proxy implements \OCP\UserInterface {
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private $backends = array();
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private $refBackend = null;
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/**
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* @brief Constructor
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* @param $serverConfigPrefixes array containing the config Prefixes
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*/
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public function __construct($serverConfigPrefixes) {
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parent::__construct();
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foreach($serverConfigPrefixes as $configPrefix) {
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$this->backends[$configPrefix] = new \OCA\user_ldap\USER_LDAP();
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$connector = $this->getConnector($configPrefix);
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$this->backends[$configPrefix]->setConnector($connector);
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if(is_null($this->refBackend)) {
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$this->refBackend = &$this->backends[$configPrefix];
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}
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}
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}
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/**
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* @brief Tries the backends one after the other until a positive result is returned from the specified method
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* @param $uid string, the uid connected to the request
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* @param $method string, the method of the user backend that shall be called
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* @param $parameters an array of parameters to be passed
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* @return mixed, the result of the method or false
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*/
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protected function walkBackends($uid, $method, $parameters) {
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$cacheKey = $this->getUserCacheKey($uid);
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foreach($this->backends as $configPrefix => $backend) {
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if($result = call_user_func_array(array($backend, $method), $parameters)) {
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$this->writeToCache($cacheKey, $configPrefix);
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return $result;
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}
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}
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return false;
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}
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/**
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* @brief Asks the backend connected to the server that supposely takes care of the uid from the request.
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* @param $uid string, the uid connected to the request
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* @param $method string, the method of the user backend that shall be called
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* @param $parameters an array of parameters to be passed
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* @return mixed, the result of the method or false
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*/
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protected function callOnLastSeenOn($uid, $method, $parameters) {
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$cacheKey = $this->getUserCacheKey($uid);
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$prefix = $this->getFromCache($cacheKey);
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//in case the uid has been found in the past, try this stored connection first
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if(!is_null($prefix)) {
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if(isset($this->backends[$prefix])) {
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$result = call_user_func_array(array($this->backends[$prefix], $method), $parameters);
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if(!$result) {
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//not found here, reset cache to null
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$this->writeToCache($cacheKey, null);
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}
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return $result;
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}
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}
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return false;
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}
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/**
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* @brief Check if backend implements actions
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* @param $actions bitwise-or'ed actions
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* @returns boolean
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*
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* Returns the supported actions as int to be
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* compared with OC_USER_BACKEND_CREATE_USER etc.
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*/
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public function implementsActions($actions) {
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//it's the same across all our user backends obviously
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return $this->refBackend->implementsActions($actions);
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}
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/**
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* @brief Get a list of all users
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* @returns array with all uids
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*
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* Get a list of all users.
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*/
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public function getUsers($search = '', $limit = 10, $offset = 0) {
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//we do it just as the /OC_User implementation: do not play around with limit and offset but ask all backends
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$users = array();
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foreach($this->backends as $backend) {
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$backendUsers = $backend->getUsers($search, $limit, $offset);
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if (is_array($backendUsers)) {
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$users = array_merge($users, $backendUsers);
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}
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}
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return $users;
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}
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/**
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* @brief check if a user exists
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* @param string $uid the username
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* @return boolean
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*/
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public function userExists($uid) {
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return $this->handleRequest($uid, 'userExists', array($uid));
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}
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/**
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* @brief Check if the password is correct
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* @param $uid The username
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* @param $password The password
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* @returns true/false
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*
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* Check if the password is correct without logging in the user
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*/
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public function checkPassword($uid, $password) {
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return $this->handleRequest($uid, 'checkPassword', array($uid, $password));
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}
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/**
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* @brief get the user's home directory
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* @param string $uid the username
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* @return boolean
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*/
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public function getHome($uid) {
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return $this->handleRequest($uid, 'getHome', array($uid));
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}
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/**
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* @brief delete a user
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* @param $uid The username of the user to delete
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* @returns true/false
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*
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* Deletes a user
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*/
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public function deleteUser($uid) {
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return false;
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}
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}
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