702 lines
21 KiB
PHP
702 lines
21 KiB
PHP
<?php
|
||
|
||
/**
|
||
* ownCloud – LDAP group backend
|
||
*
|
||
* @author Arthur Schiwon
|
||
* @copyright 2012 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;
|
||
|
||
use OCA\user_ldap\lib\Access;
|
||
use OCA\user_ldap\lib\BackendUtility;
|
||
|
||
class GROUP_LDAP extends BackendUtility implements \OCP\GroupInterface {
|
||
protected $enabled = false;
|
||
|
||
/**
|
||
* @var string[] $cachedGroupMembers array of users with gid as key
|
||
*/
|
||
protected $cachedGroupMembers = array();
|
||
|
||
/**
|
||
* @var string[] $cachedGroupsByMember array of groups with uid as key
|
||
*/
|
||
protected $cachedGroupsByMember = array();
|
||
|
||
public function __construct(Access $access) {
|
||
parent::__construct($access);
|
||
$filter = $this->access->connection->ldapGroupFilter;
|
||
$gassoc = $this->access->connection->ldapGroupMemberAssocAttr;
|
||
if(!empty($filter) && !empty($gassoc)) {
|
||
$this->enabled = true;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* 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, $gid) {
|
||
if(!$this->enabled) {
|
||
return false;
|
||
}
|
||
$cacheKey = 'inGroup'.$uid.':'.$gid;
|
||
if($this->access->connection->isCached($cacheKey)) {
|
||
return $this->access->connection->getFromCache($cacheKey);
|
||
}
|
||
|
||
$userDN = $this->access->username2dn($uid);
|
||
|
||
if(isset($this->cachedGroupMembers[$gid])) {
|
||
$isInGroup = in_array($userDN, $this->cachedGroupMembers[$gid]);
|
||
return $isInGroup;
|
||
}
|
||
|
||
$cacheKeyMembers = 'inGroup-members:'.$gid;
|
||
if($this->access->connection->isCached($cacheKeyMembers)) {
|
||
$members = $this->access->connection->getFromCache($cacheKeyMembers);
|
||
$this->cachedGroupMembers[$gid] = $members;
|
||
$isInGroup = in_array($userDN, $members);
|
||
$this->access->connection->writeToCache($cacheKey, $isInGroup);
|
||
return $isInGroup;
|
||
}
|
||
|
||
$groupDN = $this->access->groupname2dn($gid);
|
||
// just in case
|
||
if(!$groupDN || !$userDN) {
|
||
$this->access->connection->writeToCache($cacheKey, false);
|
||
return false;
|
||
}
|
||
|
||
//check primary group first
|
||
if($gid === $this->getUserPrimaryGroup($userDN)) {
|
||
$this->access->connection->writeToCache($cacheKey, true);
|
||
return true;
|
||
}
|
||
|
||
//usually, LDAP attributes are said to be case insensitive. But there are exceptions of course.
|
||
$members = $this->_groupMembers($groupDN);
|
||
$members = array_keys($members); // uids are returned as keys
|
||
if(!is_array($members) || count($members) === 0) {
|
||
$this->access->connection->writeToCache($cacheKey, false);
|
||
return false;
|
||
}
|
||
|
||
//extra work if we don't get back user DNs
|
||
if(strtolower($this->access->connection->ldapGroupMemberAssocAttr) === 'memberuid') {
|
||
$dns = array();
|
||
$filterParts = array();
|
||
$bytes = 0;
|
||
foreach($members as $mid) {
|
||
$filter = str_replace('%uid', $mid, $this->access->connection->ldapLoginFilter);
|
||
$filterParts[] = $filter;
|
||
$bytes += strlen($filter);
|
||
if($bytes >= 9000000) {
|
||
// AD has a default input buffer of 10 MB, we do not want
|
||
// to take even the chance to exceed it
|
||
$filter = $this->access->combineFilterWithOr($filterParts);
|
||
$bytes = 0;
|
||
$filterParts = array();
|
||
$users = $this->access->fetchListOfUsers($filter, 'dn', count($filterParts));
|
||
$dns = array_merge($dns, $users);
|
||
}
|
||
}
|
||
if(count($filterParts) > 0) {
|
||
$filter = $this->access->combineFilterWithOr($filterParts);
|
||
$users = $this->access->fetchListOfUsers($filter, 'dn', count($filterParts));
|
||
$dns = array_merge($dns, $users);
|
||
}
|
||
$members = $dns;
|
||
}
|
||
|
||
$isInGroup = in_array($userDN, $members);
|
||
$this->access->connection->writeToCache($cacheKey, $isInGroup);
|
||
$this->access->connection->writeToCache($cacheKeyMembers, $members);
|
||
$this->cachedGroupMembers[$gid] = $members;
|
||
|
||
return $isInGroup;
|
||
}
|
||
|
||
/**
|
||
* @param string $dnGroup
|
||
* @param array|null &$seen
|
||
* @return array|mixed|null
|
||
*/
|
||
private function _groupMembers($dnGroup, &$seen = null) {
|
||
if ($seen === null) {
|
||
$seen = array();
|
||
}
|
||
$allMembers = array();
|
||
if (array_key_exists($dnGroup, $seen)) {
|
||
// avoid loops
|
||
return array();
|
||
}
|
||
// used extensively in cron job, caching makes sense for nested groups
|
||
$cacheKey = '_groupMembers'.$dnGroup;
|
||
if($this->access->connection->isCached($cacheKey)) {
|
||
return $this->access->connection->getFromCache($cacheKey);
|
||
}
|
||
$seen[$dnGroup] = 1;
|
||
$members = $this->access->readAttribute($dnGroup, $this->access->connection->ldapGroupMemberAssocAttr,
|
||
$this->access->connection->ldapGroupFilter);
|
||
if (is_array($members)) {
|
||
foreach ($members as $memberDN) {
|
||
$allMembers[$memberDN] = 1;
|
||
$nestedGroups = $this->access->connection->ldapNestedGroups;
|
||
if (!empty($nestedGroups)) {
|
||
$subMembers = $this->_groupMembers($memberDN, $seen);
|
||
if ($subMembers) {
|
||
$allMembers = array_merge($allMembers, $subMembers);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
$this->access->connection->writeToCache($cacheKey, $allMembers);
|
||
return $allMembers;
|
||
}
|
||
|
||
/**
|
||
* translates a primary group ID into an ownCloud internal name
|
||
* @param string $gid as given by primaryGroupID on AD
|
||
* @param string $dn a DN that belongs to the same domain as the group
|
||
* @return string|bool
|
||
*/
|
||
public function primaryGroupID2Name($gid, $dn) {
|
||
$cacheKey = 'primaryGroupIDtoName';
|
||
if($this->access->connection->isCached($cacheKey)) {
|
||
$groupNames = $this->access->connection->getFromCache($cacheKey);
|
||
if(isset($groupNames[$gid])) {
|
||
return $groupNames[$gid];
|
||
}
|
||
}
|
||
|
||
$domainObjectSid = $this->access->getSID($dn);
|
||
if($domainObjectSid === false) {
|
||
return false;
|
||
}
|
||
|
||
//we need to get the DN from LDAP
|
||
$filter = $this->access->combineFilterWithAnd(array(
|
||
$this->access->connection->ldapGroupFilter,
|
||
'objectsid=' . $domainObjectSid . '-' . $gid
|
||
));
|
||
$result = $this->access->searchGroups($filter, array('dn'), 1);
|
||
if(empty($result)) {
|
||
return false;
|
||
}
|
||
$dn = $result[0];
|
||
|
||
//and now the group name
|
||
//NOTE once we have separate ownCloud group IDs and group names we can
|
||
//directly read the display name attribute instead of the DN
|
||
$name = $this->access->dn2groupname($dn);
|
||
|
||
$this->access->connection->writeToCache($cacheKey, $name);
|
||
|
||
return $name;
|
||
}
|
||
|
||
/**
|
||
* returns the entry's primary group ID
|
||
* @param string $dn
|
||
* @param string $attribute
|
||
* @return string|bool
|
||
*/
|
||
private function getEntryGroupID($dn, $attribute) {
|
||
$value = $this->access->readAttribute($dn, $attribute);
|
||
if(is_array($value) && !empty($value)) {
|
||
return $value[0];
|
||
}
|
||
return false;
|
||
}
|
||
|
||
/**
|
||
* returns the group's primary ID
|
||
* @param string $dn
|
||
* @return string|bool
|
||
*/
|
||
public function getGroupPrimaryGroupID($dn) {
|
||
return $this->getEntryGroupID($dn, 'primaryGroupToken');
|
||
}
|
||
|
||
/**
|
||
* returns the user's primary group ID
|
||
* @param string $dn
|
||
* @return string|bool
|
||
*/
|
||
public function getUserPrimaryGroupIDs($dn) {
|
||
return $this->getEntryGroupID($dn, 'primaryGroupID');
|
||
}
|
||
|
||
/**
|
||
* returns a list of users that have the given group as primary group
|
||
*
|
||
* @param string $groupDN
|
||
* @param $limit
|
||
* @param int $offset
|
||
* @return string[]
|
||
*/
|
||
public function getUsersInPrimaryGroup($groupDN, $limit = -1, $offset = 0) {
|
||
$groupID = $this->getGroupPrimaryGroupID($groupDN);
|
||
if($groupID === false) {
|
||
return array();
|
||
}
|
||
|
||
$filter = $this->access->combineFilterWithAnd(array(
|
||
$this->access->connection->ldapUserFilter,
|
||
'primaryGroupID=' . $groupID
|
||
));
|
||
|
||
$users = $this->access->fetchListOfUsers(
|
||
$filter,
|
||
array($this->access->connection->ldapUserDisplayName, 'dn'),
|
||
$limit,
|
||
$offset
|
||
);
|
||
|
||
return $users;
|
||
}
|
||
|
||
/**
|
||
* gets the primary group of a user
|
||
* @param string $dn
|
||
* @return string
|
||
*/
|
||
public function getUserPrimaryGroup($dn) {
|
||
$groupID = $this->getUserPrimaryGroupIDs($dn);
|
||
if($groupID !== false) {
|
||
$groupName = $this->primaryGroupID2Name($groupID, $dn);
|
||
if($groupName !== false) {
|
||
return $groupName;
|
||
}
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
/**
|
||
* Get all groups a user belongs to
|
||
* @param string $uid Name of the user
|
||
* @return array with group names
|
||
*
|
||
* This function fetches all groups a user belongs to. It does not check
|
||
* if the user exists at all.
|
||
*/
|
||
public function getUserGroups($uid) {
|
||
if(!$this->enabled) {
|
||
return array();
|
||
}
|
||
$cacheKey = 'getUserGroups'.$uid;
|
||
if($this->access->connection->isCached($cacheKey)) {
|
||
return $this->access->connection->getFromCache($cacheKey);
|
||
}
|
||
$userDN = $this->access->username2dn($uid);
|
||
if(!$userDN) {
|
||
$this->access->connection->writeToCache($cacheKey, array());
|
||
return array();
|
||
}
|
||
|
||
//uniqueMember takes DN, memberuid the uid, so we need to distinguish
|
||
if((strtolower($this->access->connection->ldapGroupMemberAssocAttr) === 'uniquemember')
|
||
|| (strtolower($this->access->connection->ldapGroupMemberAssocAttr) === 'member')
|
||
) {
|
||
$uid = $userDN;
|
||
} else if(strtolower($this->access->connection->ldapGroupMemberAssocAttr) === 'memberuid') {
|
||
$result = $this->access->readAttribute($userDN, 'uid');
|
||
if ($result === false) {
|
||
\OCP\Util::writeLog('user_ldap', 'No uid attribute found for DN ' . $userDN . ' on '.
|
||
$this->access->connection->ldapHost, \OCP\Util::DEBUG);
|
||
}
|
||
$uid = $result[0];
|
||
} else {
|
||
// just in case
|
||
$uid = $userDN;
|
||
}
|
||
|
||
if(isset($this->cachedGroupsByMember[$uid])) {
|
||
$groups = $this->cachedGroupsByMember[$uid];
|
||
} else {
|
||
$groups = array_values($this->getGroupsByMember($uid));
|
||
$groups = $this->access->ownCloudGroupNames($groups);
|
||
$this->cachedGroupsByMember[$uid] = $groups;
|
||
}
|
||
|
||
$primaryGroup = $this->getUserPrimaryGroup($userDN);
|
||
if($primaryGroup !== false) {
|
||
$groups[] = $primaryGroup;
|
||
}
|
||
|
||
$groups = array_unique($groups, SORT_LOCALE_STRING);
|
||
$this->access->connection->writeToCache($cacheKey, $groups);
|
||
|
||
return $groups;
|
||
}
|
||
|
||
/**
|
||
* @param string $dn
|
||
* @param array|null &$seen
|
||
* @return array
|
||
*/
|
||
private function getGroupsByMember($dn, &$seen = null) {
|
||
if ($seen === null) {
|
||
$seen = array();
|
||
}
|
||
$allGroups = array();
|
||
if (array_key_exists($dn, $seen)) {
|
||
// avoid loops
|
||
return array();
|
||
}
|
||
$seen[$dn] = true;
|
||
$filter = $this->access->combineFilterWithAnd(array(
|
||
$this->access->connection->ldapGroupFilter,
|
||
$this->access->connection->ldapGroupMemberAssocAttr.'='.$dn
|
||
));
|
||
$groups = $this->access->fetchListOfGroups($filter,
|
||
array($this->access->connection->ldapGroupDisplayName, 'dn'));
|
||
if (is_array($groups)) {
|
||
foreach ($groups as $groupobj) {
|
||
$groupDN = $groupobj['dn'];
|
||
$allGroups[$groupDN] = $groupobj;
|
||
$nestedGroups = $this->access->connection->ldapNestedGroups;
|
||
if (!empty($nestedGroups)) {
|
||
$supergroups = $this->getGroupsByMember($groupDN, $seen);
|
||
if (is_array($supergroups) && (count($supergroups)>0)) {
|
||
$allGroups = array_merge($allGroups, $supergroups);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
return $allGroups;
|
||
}
|
||
|
||
/**
|
||
* get a list of all users in a group
|
||
*
|
||
* @param string $gid
|
||
* @param string $search
|
||
* @param int $limit
|
||
* @param int $offset
|
||
* @return array with user ids
|
||
*/
|
||
public function usersInGroup($gid, $search = '', $limit = -1, $offset = 0) {
|
||
if(!$this->enabled) {
|
||
return array();
|
||
}
|
||
if(!$this->groupExists($gid)) {
|
||
return array();
|
||
}
|
||
$cacheKey = 'usersInGroup-'.$gid.'-'.$search.'-'.$limit.'-'.$offset;
|
||
// check for cache of the exact query
|
||
$groupUsers = $this->access->connection->getFromCache($cacheKey);
|
||
if(!is_null($groupUsers)) {
|
||
return $groupUsers;
|
||
}
|
||
|
||
// check for cache of the query without limit and offset
|
||
$groupUsers = $this->access->connection->getFromCache('usersInGroup-'.$gid.'-'.$search);
|
||
if(!is_null($groupUsers)) {
|
||
$groupUsers = array_slice($groupUsers, $offset, $limit);
|
||
$this->access->connection->writeToCache($cacheKey, $groupUsers);
|
||
return $groupUsers;
|
||
}
|
||
|
||
if($limit === -1) {
|
||
$limit = null;
|
||
}
|
||
$groupDN = $this->access->groupname2dn($gid);
|
||
if(!$groupDN) {
|
||
// group couldn't be found, return empty resultset
|
||
$this->access->connection->writeToCache($cacheKey, array());
|
||
return array();
|
||
}
|
||
|
||
$members = array_keys($this->_groupMembers($groupDN));
|
||
if(!$members) {
|
||
//in case users could not be retrieved, return empty result set
|
||
$this->access->connection->writeToCache($cacheKey, array());
|
||
return array();
|
||
}
|
||
|
||
$groupUsers = array();
|
||
$isMemberUid = (strtolower($this->access->connection->ldapGroupMemberAssocAttr) === 'memberuid');
|
||
foreach($members as $member) {
|
||
if($isMemberUid) {
|
||
//we got uids, need to get their DNs to 'translate' them to user names
|
||
$filter = $this->access->combineFilterWithAnd(array(
|
||
\OCP\Util::mb_str_replace('%uid', $member,
|
||
$this->access->connection->ldapLoginFilter, 'UTF-8'),
|
||
$this->access->getFilterPartForUserSearch($search)
|
||
));
|
||
$ldap_users = $this->access->fetchListOfUsers($filter, 'dn');
|
||
if(count($ldap_users) < 1) {
|
||
continue;
|
||
}
|
||
$groupUsers[] = $this->access->dn2username($ldap_users[0]);
|
||
} else {
|
||
//we got DNs, check if we need to filter by search or we can give back all of them
|
||
if(!empty($search)) {
|
||
if(!$this->access->readAttribute($member,
|
||
$this->access->connection->ldapUserDisplayName,
|
||
$this->access->getFilterPartForUserSearch($search))) {
|
||
continue;
|
||
}
|
||
}
|
||
// dn2username will also check if the users belong to the allowed base
|
||
if($ocname = $this->access->dn2username($member)) {
|
||
$groupUsers[] = $ocname;
|
||
}
|
||
}
|
||
}
|
||
|
||
natsort($groupUsers);
|
||
$this->access->connection->writeToCache('usersInGroup-'.$gid.'-'.$search, $groupUsers);
|
||
$groupUsers = array_slice($groupUsers, $offset, $limit);
|
||
|
||
//and get users that have the group as primary
|
||
$primaryUsers = $this->getUsersInPrimaryGroup($groupDN, $limit, $offset);
|
||
$groupUsers = array_unique(array_merge($groupUsers, $primaryUsers));
|
||
|
||
$this->access->connection->writeToCache($cacheKey, $groupUsers);
|
||
|
||
return $groupUsers;
|
||
}
|
||
|
||
/**
|
||
* 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 = '') {
|
||
$cacheKey = 'countUsersInGroup-'.$gid.'-'.$search;
|
||
if(!$this->enabled || !$this->groupExists($gid)) {
|
||
return false;
|
||
}
|
||
$groupUsers = $this->access->connection->getFromCache($cacheKey);
|
||
if(!is_null($groupUsers)) {
|
||
return $groupUsers;
|
||
}
|
||
|
||
$groupDN = $this->access->groupname2dn($gid);
|
||
if(!$groupDN) {
|
||
// group couldn't be found, return empty result set
|
||
$this->access->connection->writeToCache($cacheKey, false);
|
||
return false;
|
||
}
|
||
|
||
$members = array_keys($this->_groupMembers($groupDN));
|
||
if(!$members) {
|
||
//in case users could not be retrieved, return empty result set
|
||
$this->access->connection->writeToCache($cacheKey, false);
|
||
return false;
|
||
}
|
||
|
||
if(empty($search)) {
|
||
$groupUsers = count($members);
|
||
$this->access->connection->writeToCache($cacheKey, $groupUsers);
|
||
return $groupUsers;
|
||
}
|
||
$isMemberUid =
|
||
(strtolower($this->access->connection->ldapGroupMemberAssocAttr)
|
||
=== 'memberuid');
|
||
|
||
//we need to apply the search filter
|
||
//alternatives that need to be checked:
|
||
//a) get all users by search filter and array_intersect them
|
||
//b) a, but only when less than 1k 10k ?k users like it is
|
||
//c) put all DNs|uids in a LDAP filter, combine with the search string
|
||
// and let it count.
|
||
//For now this is not important, because the only use of this method
|
||
//does not supply a search string
|
||
$groupUsers = array();
|
||
foreach($members as $member) {
|
||
if($isMemberUid) {
|
||
//we got uids, need to get their DNs to 'translate' them to user names
|
||
$filter = $this->access->combineFilterWithAnd(array(
|
||
\OCP\Util::mb_str_replace('%uid', $member,
|
||
$this->access->connection->ldapLoginFilter, 'UTF-8'),
|
||
$this->access->getFilterPartForUserSearch($search)
|
||
));
|
||
$ldap_users = $this->access->fetchListOfUsers($filter, 'dn');
|
||
if(count($ldap_users) < 1) {
|
||
continue;
|
||
}
|
||
$groupUsers[] = $this->access->dn2username($ldap_users[0]);
|
||
} else {
|
||
//we need to apply the search filter now
|
||
if(!$this->access->readAttribute($member,
|
||
$this->access->connection->ldapUserDisplayName,
|
||
$this->access->getFilterPartForUserSearch($search))) {
|
||
continue;
|
||
}
|
||
// dn2username will also check if the users belong to the allowed base
|
||
if($ocname = $this->access->dn2username($member)) {
|
||
$groupUsers[] = $ocname;
|
||
}
|
||
}
|
||
}
|
||
|
||
//and get users that have the group as primary
|
||
$primaryUsers = $this->getUsersInPrimaryGroup($groupDN);
|
||
$groupUsers = array_unique(array_merge($groupUsers, $primaryUsers));
|
||
|
||
return count($groupUsers);
|
||
}
|
||
|
||
/**
|
||
* get a list of all groups
|
||
*
|
||
* @param string $search
|
||
* @param $limit
|
||
* @param int $offset
|
||
* @return array with group names
|
||
*
|
||
* Returns a list with all groups (used by getGroups)
|
||
*/
|
||
protected function getGroupsChunk($search = '', $limit = -1, $offset = 0) {
|
||
if(!$this->enabled) {
|
||
return array();
|
||
}
|
||
$cacheKey = 'getGroups-'.$search.'-'.$limit.'-'.$offset;
|
||
|
||
//Check cache before driving unnecessary searches
|
||
\OCP\Util::writeLog('user_ldap', 'getGroups '.$cacheKey, \OCP\Util::DEBUG);
|
||
$ldap_groups = $this->access->connection->getFromCache($cacheKey);
|
||
if(!is_null($ldap_groups)) {
|
||
return $ldap_groups;
|
||
}
|
||
|
||
// if we'd pass -1 to LDAP search, we'd end up in a Protocol
|
||
// error. With a limit of 0, we get 0 results. So we pass null.
|
||
if($limit <= 0) {
|
||
$limit = null;
|
||
}
|
||
$filter = $this->access->combineFilterWithAnd(array(
|
||
$this->access->connection->ldapGroupFilter,
|
||
$this->access->getFilterPartForGroupSearch($search)
|
||
));
|
||
\OCP\Util::writeLog('user_ldap', 'getGroups Filter '.$filter, \OCP\Util::DEBUG);
|
||
$ldap_groups = $this->access->fetchListOfGroups($filter,
|
||
array($this->access->connection->ldapGroupDisplayName, 'dn'),
|
||
$limit,
|
||
$offset);
|
||
$ldap_groups = $this->access->ownCloudGroupNames($ldap_groups);
|
||
|
||
$this->access->connection->writeToCache($cacheKey, $ldap_groups);
|
||
return $ldap_groups;
|
||
}
|
||
|
||
/**
|
||
* get a list of all groups using a paged search
|
||
*
|
||
* @param string $search
|
||
* @param int $limit
|
||
* @param int $offset
|
||
* @return array with group names
|
||
*
|
||
* Returns a list with all groups
|
||
* Uses a paged search if available to override a
|
||
* server side search limit.
|
||
* (active directory has a limit of 1000 by default)
|
||
*/
|
||
public function getGroups($search = '', $limit = -1, $offset = 0) {
|
||
if(!$this->enabled) {
|
||
return array();
|
||
}
|
||
$pagingSize = $this->access->connection->ldapPagingSize;
|
||
if ((! $this->access->connection->hasPagedResultSupport)
|
||
|| empty($pagingSize)) {
|
||
return $this->getGroupsChunk($search, $limit, $offset);
|
||
}
|
||
$maxGroups = 100000; // limit max results (just for safety reasons)
|
||
if ($limit > -1) {
|
||
$overallLimit = min($limit, $maxGroups);
|
||
} else {
|
||
$overallLimit = $maxGroups;
|
||
}
|
||
$chunkOffset = $offset;
|
||
$allGroups = array();
|
||
while ($chunkOffset < $overallLimit) {
|
||
$chunkLimit = min($pagingSize, $overallLimit - $chunkOffset);
|
||
$ldapGroups = $this->getGroupsChunk($search, $chunkLimit, $chunkOffset);
|
||
$nread = count($ldapGroups);
|
||
\OCP\Util::writeLog('user_ldap', 'getGroups('.$search.'): read '.$nread.' at offset '.$chunkOffset.' (limit: '.$chunkLimit.')', \OCP\Util::DEBUG);
|
||
if ($nread) {
|
||
$allGroups = array_merge($allGroups, $ldapGroups);
|
||
$chunkOffset += $nread;
|
||
}
|
||
if ($nread < $chunkLimit) {
|
||
break;
|
||
}
|
||
}
|
||
return $allGroups;
|
||
}
|
||
|
||
/**
|
||
* @param string $group
|
||
* @return bool
|
||
*/
|
||
public function groupMatchesFilter($group) {
|
||
return (strripos($group, $this->groupSearch) !== false);
|
||
}
|
||
|
||
/**
|
||
* check if a group exists
|
||
* @param string $gid
|
||
* @return bool
|
||
*/
|
||
public function groupExists($gid) {
|
||
if($this->access->connection->isCached('groupExists'.$gid)) {
|
||
return $this->access->connection->getFromCache('groupExists'.$gid);
|
||
}
|
||
|
||
//getting dn, if false the group does not exist. If dn, it may be mapped
|
||
//only, requires more checking.
|
||
$dn = $this->access->groupname2dn($gid);
|
||
if(!$dn) {
|
||
$this->access->connection->writeToCache('groupExists'.$gid, false);
|
||
return false;
|
||
}
|
||
|
||
//if group really still exists, we will be able to read its objectclass
|
||
if(!is_array($this->access->readAttribute($dn, ''))) {
|
||
$this->access->connection->writeToCache('groupExists'.$gid, false);
|
||
return false;
|
||
}
|
||
|
||
$this->access->connection->writeToCache('groupExists'.$gid, true);
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* 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) {
|
||
return (bool)(OC_GROUP_BACKEND_COUNT_USERS & $actions);
|
||
}
|
||
}
|