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simplify getGroups, fixing wrong chunking logic #21123

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Merged
rullzer merged 1 commit into from
May 27, 2020
Merged

simplify getGroups, fixing wrong chunking logic #21123

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57 changes: 7 additions & 50 deletions apps/user_ldap/lib/Group_LDAP.php
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Original file line number Diff line number Diff line change
Expand Up @@ -1015,16 +1015,19 @@ public function countUsersInGroup($gid, $search = '') {
}

/**
* get a list of all groups
* get a list of all groups using a paged search
*
* @param string $search
* @param $limit
* @param int $limit
* @param int $offset
* @return array with group names
*
* Returns a list with all groups (used by getGroups)
* Returns a list with all groups
* Uses a paged search if available to override a
* server side search limit.
* (active directory has a limit of 1000 by default)
*/
protected function getGroupsChunk($search = '', $limit = -1, $offset = 0) {
public function getGroups($search = '', $limit = -1, $offset = 0) {
if (!$this->enabled) {
return [];
}
Expand Down Expand Up @@ -1057,52 +1060,6 @@ protected function getGroupsChunk($search = '', $limit = -1, $offset = 0) {
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 [];
}
$search = $this->access->escapeFilterPart($search, true);
$pagingSize = (int)$this->access->connection->ldapPagingSize;
if ($pagingSize <= 0) {
return $this->getGroupsChunk($search, $limit, $offset);
}
$maxGroups = 100000; // limit max results (just for safety reasons)
if ($limit > -1) {
$overallLimit = min($limit + $offset, $maxGroups);
} else {
$overallLimit = $maxGroups;
}
$chunkOffset = $offset;
$allGroups = [];
while ($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: ' . $chunkLimit . ')', ILogger::DEBUG);
if ($nread) {
$allGroups = array_merge($allGroups, $ldapGroups);
$chunkOffset += $nread;
}
if ($nread < $chunkLimit) {
break;
}
}
return $allGroups;
}

/**
* @param string $group
* @return bool
Expand Down