1 files changed, 197 insertions, 0 deletions
diff --git a/apps/user_ldap/lib/Group_Proxy.php b/apps/user_ldap/lib/Group_Proxy.php
new file mode 100644
index 00000000000..333a74bab22
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+++ b/apps/user_ldap/lib/Group_Proxy.php
@@ -0,0 +1,197 @@
+<?php
+/**
+ * @author Arthur Schiwon <blizzz@owncloud.com>
+ * @author Christopher Schäpers <kondou@ts.unde.re>
+ * @author Morris Jobke <hey@morrisjobke.de>
+ * @author Robin McCorkell <robin@mccorkell.me.uk>
+ *
+ * @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;
+
+class Group_Proxy extends Proxy implements \OCP\GroupInterface {
+	private $backends = array();
+	private $refBackend = null;
+
+	/**
+	 * Constructor
+	 * @param string[] $serverConfigPrefixes array containing the config Prefixes
+	 */
+	public function __construct($serverConfigPrefixes, ILDAPWrapper $ldap) {
+		parent::__construct($ldap);
+		foreach($serverConfigPrefixes as $configPrefix) {
+			$this->backends[$configPrefix] =
+				new \OCA\User_LDAP\Group_LDAP($this->getAccess($configPrefix));
+			if(is_null($this->refBackend)) {
+				$this->refBackend = &$this->backends[$configPrefix];
+			}
+		}
+	}
+
+	/**
+	 * Tries the backends one after the other until a positive result is returned from the specified method
+	 * @param string $gid the gid connected to the request
+	 * @param string $method the method of the group backend that shall be called
+	 * @param array $parameters an array of parameters to be passed
+	 * @return mixed, the result of the method or false
+	 */
+	protected function walkBackends($gid, $method, $parameters) {
+		$cacheKey = $this->getGroupCacheKey($gid);
+		foreach($this->backends as $configPrefix => $backend) {
+			if($result = call_user_func_array(array($backend, $method), $parameters)) {
+				$this->writeToCache($cacheKey, $configPrefix);
+				return $result;
+			}
+		}
+		return false;
+	}
+
+	/**
+	 * Asks the backend connected to the server that supposely takes care of the gid from the request.
+	 * @param string $gid the gid connected to the request
+	 * @param string $method the method of the group backend that shall be called
+	 * @param array $parameters an array of parameters to be passed
+	 * @param mixed $passOnWhen the result matches this variable
+	 * @return mixed, the result of the method or false
+	 */
+	protected function callOnLastSeenOn($gid, $method, $parameters, $passOnWhen) {
+		$cacheKey = $this->getGroupCacheKey($gid);;
+		$prefix = $this->getFromCache($cacheKey);
+		//in case the uid has been found in the past, try this stored connection first
+		if(!is_null($prefix)) {
+			if(isset($this->backends[$prefix])) {
+				$result = call_user_func_array(array($this->backends[$prefix], $method), $parameters);
+				if($result === $passOnWhen) {
+					//not found here, reset cache to null if group vanished
+					//because sometimes methods return false with a reason
+					$groupExists = call_user_func_array(
+						array($this->backends[$prefix], 'groupExists'),
+						array($gid)
+					);
+					if(!$groupExists) {
+						$this->writeToCache($cacheKey, null);
+					}
+				}
+				return $result;
+			}
+		}
+		return false;
+	}
+
+	/**
+	 * is user in group?
+	 * @param string $uid uid of the user
+	 * @param string $gid gid of the group
+	 * @return bool
+	 *
+	 * Checks whether the user is member of a group or not.
+	 */
+	public function inGroup($uid, $gid) {
+		return $this->handleRequest($gid, 'inGroup', array($uid, $gid));
+	}
+
+	/**
+	 * Get all groups a user belongs to
+	 * @param string $uid Name of the user
+	 * @return string[] with group names
+	 *
+	 * This function fetches all groups a user belongs to. It does not check
+	 * if the user exists at all.
+	 */
+	public function getUserGroups($uid) {
+		$groups = array();
+
+		foreach($this->backends as $backend) {
+			$backendGroups = $backend->getUserGroups($uid);
+			if (is_array($backendGroups)) {
+				$groups = array_merge($groups, $backendGroups);
+			}
+		}
+
+		return $groups;
+	}
+
+	/**
+	 * get a list of all users in a group
+	 * @return string[] with user ids
+	 */
+	public function usersInGroup($gid, $search = '', $limit = -1, $offset = 0) {
+		$users = array();
+
+		foreach($this->backends as $backend) {
+			$backendUsers = $backend->usersInGroup($gid, $search, $limit, $offset);
+			if (is_array($backendUsers)) {
+				$users = array_merge($users, $backendUsers);
+			}
+		}
+
+		return $users;
+	}
+
+	/**
+	 * returns the number of users in a group, who match the search term
+	 * @param string $gid the internal group name
+	 * @param string $search optional, a search string
+	 * @return int|bool
+	 */
+	public function countUsersInGroup($gid, $search = '') {
+		return $this->handleRequest(
+			$gid, 'countUsersInGroup', array($gid, $search));
+	}
+
+	/**
+	 * get a list of all groups
+	 * @return string[] with group names
+	 *
+	 * Returns a list with all groups
+	 */
+	public function getGroups($search = '', $limit = -1, $offset = 0) {
+		$groups = array();
+
+		foreach($this->backends as $backend) {
+			$backendGroups = $backend->getGroups($search, $limit, $offset);
+			if (is_array($backendGroups)) {
+				$groups = array_merge($groups, $backendGroups);
+			}
+		}
+
+		return $groups;
+	}
+
+	/**
+	 * check if a group exists
+	 * @param string $gid
+	 * @return bool
+	 */
+	public function groupExists($gid) {
+		return $this->handleRequest($gid, 'groupExists', array($gid));
+	}
+
+	/**
+	 * Check if backend implements actions
+	 * @param int $actions bitwise-or'ed actions
+	 * @return boolean
+	 *
+	 * Returns the supported actions as int to be
+	 * compared with OC_USER_BACKEND_CREATE_USER etc.
+	 */
+	public function implementsActions($actions) {
+		//it's the same across all our user backends obviously
+		return $this->refBackend->implementsActions($actions);
+	}
+}