269 lines
8.1 KiB
PHP
269 lines
8.1 KiB
PHP
<?php
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/**
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* ownCloud – LDAP group backend
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*
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* @author Arthur Schiwon
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* @copyright 2012 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_LDAP extends lib\Access implements \OCP\GroupInterface {
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protected $enabled = false;
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public function setConnector(lib\Connection &$connection) {
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parent::setConnector($connection);
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if(empty($this->connection->ldapGroupFilter) || empty($this->connection->ldapGroupMemberAssocAttr)) {
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$this->enabled = false;
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}
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$this->enabled = true;
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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, $gid) {
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if(!$this->enabled) {
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return false;
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}
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if($this->connection->isCached('inGroup'.$uid.':'.$gid)) {
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return $this->connection->getFromCache('inGroup'.$uid.':'.$gid);
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}
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$dn_user = $this->username2dn($uid);
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$dn_group = $this->groupname2dn($gid);
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// just in case
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if(!$dn_group || !$dn_user) {
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$this->connection->writeToCache('inGroup'.$uid.':'.$gid, false);
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return false;
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}
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//usually, LDAP attributes are said to be case insensitive. But there are exceptions of course.
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$members = $this->readAttribute($dn_group, $this->connection->ldapGroupMemberAssocAttr);
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if(!$members) {
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$this->connection->writeToCache('inGroup'.$uid.':'.$gid, false);
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return false;
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}
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//extra work if we don't get back user DNs
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//TODO: this can be done with one LDAP query
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if(strtolower($this->connection->ldapGroupMemberAssocAttr) == 'memberuid') {
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$dns = array();
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foreach($members as $mid) {
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$filter = str_replace('%uid', $mid, $this->connection->ldapLoginFilter);
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$ldap_users = $this->fetchListOfUsers($filter, 'dn');
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if(count($ldap_users) < 1) {
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continue;
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}
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$dns[] = $ldap_users[0];
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}
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$members = $dns;
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}
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$isInGroup = in_array($dn_user, $members);
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$this->connection->writeToCache('inGroup'.$uid.':'.$gid, $isInGroup);
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return $isInGroup;
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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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if(!$this->enabled) {
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return array();
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}
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if($this->connection->isCached('getUserGroups'.$uid)) {
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return $this->connection->getFromCache('getUserGroups'.$uid);
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}
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$userDN = $this->username2dn($uid);
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if(!$userDN) {
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$this->connection->writeToCache('getUserGroups'.$uid, array());
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return array();
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}
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//uniqueMember takes DN, memberuid the uid, so we need to distinguish
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if((strtolower($this->connection->ldapGroupMemberAssocAttr) == 'uniquemember')
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|| (strtolower($this->connection->ldapGroupMemberAssocAttr) == 'member')
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) {
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$uid = $userDN;
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} else if(strtolower($this->connection->ldapGroupMemberAssocAttr) == 'memberuid') {
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$result = $this->readAttribute($userDN, 'uid');
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$uid = $result[0];
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} else {
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// just in case
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$uid = $userDN;
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}
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$filter = $this->combineFilterWithAnd(array(
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$this->connection->ldapGroupFilter,
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$this->connection->ldapGroupMemberAssocAttr.'='.$uid
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));
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$groups = $this->fetchListOfGroups($filter, array($this->connection->ldapGroupDisplayName,'dn'));
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$groups = array_unique($this->ownCloudGroupNames($groups), SORT_LOCALE_STRING);
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$this->connection->writeToCache('getUserGroups'.$uid, $groups);
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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, $offset = 0) {
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if(!$this->enabled) {
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return array();
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}
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$this->groupSearch = $search;
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if($this->connection->isCached('usersInGroup'.$gid)) {
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$groupUsers = $this->connection->getFromCache('usersInGroup'.$gid);
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if(!empty($this->groupSearch)) {
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$groupUsers = array_filter($groupUsers, array($this, 'groupMatchesFilter'));
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}
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if($limit == -1) {
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$limit = null;
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}
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return array_slice($groupUsers, $offset, $limit);
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}
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$groupDN = $this->groupname2dn($gid);
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if(!$groupDN) {
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$this->connection->writeToCache('usersInGroup'.$gid, array());
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return array();
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}
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$members = $this->readAttribute($groupDN, $this->connection->ldapGroupMemberAssocAttr);
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if(!$members) {
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$this->connection->writeToCache('usersInGroup'.$gid, array());
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return array();
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}
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$result = array();
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$isMemberUid = (strtolower($this->connection->ldapGroupMemberAssocAttr) == 'memberuid');
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foreach($members as $member) {
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if($isMemberUid) {
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$filter = \OCP\Util::mb_str_replace('%uid', $member, $this->connection->ldapLoginFilter, 'UTF-8');
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$ldap_users = $this->fetchListOfUsers($filter, 'dn');
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if(count($ldap_users) < 1) {
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continue;
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}
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$result[] = $this->dn2username($ldap_users[0]);
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continue;
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} else {
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if($ocname = $this->dn2username($member)) {
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$result[] = $ocname;
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}
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}
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}
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if(!$isMemberUid) {
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$result = array_intersect($result, \OCP\User::getUsers());
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}
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$groupUsers = array_unique($result, SORT_LOCALE_STRING);
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$this->connection->writeToCache('usersInGroup'.$gid, $groupUsers);
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if(!empty($this->groupSearch)) {
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$groupUsers = array_filter($groupUsers, array($this, 'groupMatchesFilter'));
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}
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if($limit == -1) {
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$limit = null;
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}
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return array_slice($groupUsers, $offset, $limit);
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}
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/**
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* @brief get a list of all groups
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* @returns array with group names
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*
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* Returns a list with all groups
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*/
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public function getGroups($search = '', $limit = -1, $offset = 0) {
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if(!$this->enabled) {
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return array();
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}
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if($this->connection->isCached('getGroups')) {
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$ldap_groups = $this->connection->getFromCache('getGroups');
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} else {
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$ldap_groups = $this->fetchListOfGroups($this->connection->ldapGroupFilter, array($this->connection->ldapGroupDisplayName, 'dn'));
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$ldap_groups = $this->ownCloudGroupNames($ldap_groups);
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$this->connection->writeToCache('getGroups', $ldap_groups);
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}
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$this->groupSearch = $search;
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if(!empty($this->groupSearch)) {
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$ldap_groups = array_filter($ldap_groups, array($this, 'groupMatchesFilter'));
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}
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if($limit = -1) {
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$limit = null;
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}
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return array_slice($ldap_groups, $offset, $limit);
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}
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public function groupMatchesFilter($group) {
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return (strripos($group, $this->groupSearch) !== false);
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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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if($this->connection->isCached('groupExists'.$gid)) {
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return $this->connection->getFromCache('groupExists'.$gid);
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}
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//getting dn, if false the group does not exist. If dn, it may be mapped only, requires more checking.
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$dn = $this->groupname2dn($gid);
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if(!$dn) {
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$this->connection->writeToCache('groupExists'.$gid, false);
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return false;
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}
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//if group really still exists, we will be able to read its objectclass
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$objcs = $this->readAttribute($dn, 'objectclass');
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if(!$objcs || empty($objcs)) {
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$this->connection->writeToCache('groupExists'.$gid, false);
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return false;
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}
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$this->connection->writeToCache('groupExists'.$gid, true);
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return true;
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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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//always returns false, because possible actions are modifying actions. We do not write to LDAP, at least for now.
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return false;
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}
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} |