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access.php
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access.php
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<?php
/**
* ownCloud – LDAP Access
*
* @author Arthur Schiwon
* @copyright 2012, 2013 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\lib;
use OCA\User_LDAP\Mapping\AbstractMapping;
/**
* Class Access
* @package OCA\user_ldap\lib
*/
class Access extends LDAPUtility implements user\IUserTools {
/**
* @var \OCA\user_ldap\lib\Connection
*/
public $connection;
public $userManager;
//never ever check this var directly, always use getPagedSearchResultState
protected $pagedSearchedSuccessful;
/**
* @var string[] $cookies an array of returned Paged Result cookies
*/
protected $cookies = array();
/**
* @var string $lastCookie the last cookie returned from a Paged Results
* operation, defaults to an empty string
*/
protected $lastCookie = '';
/**
* @var AbstractMapping $userMapper
*/
protected $userMapper;
/**
* @var AbstractMapping $userMapper
*/
protected $groupMapper;
public function __construct(Connection $connection, ILDAPWrapper $ldap,
user\Manager $userManager) {
parent::__construct($ldap);
$this->connection = $connection;
$this->userManager = $userManager;
$this->userManager->setLdapAccess($this);
}
/**
* sets the User Mapper
* @param AbstractMapping $mapper
*/
public function setUserMapper(AbstractMapping $mapper) {
$this->userMapper = $mapper;
}
/**
* returns the User Mapper
* @throws \Exception
* @return AbstractMapping
*/
public function getUserMapper() {
if(is_null($this->userMapper)) {
throw new \Exception('UserMapper was not assigned to this Access instance.');
}
return $this->userMapper;
}
/**
* sets the Group Mapper
* @param AbstractMapping $mapper
*/
public function setGroupMapper(AbstractMapping $mapper) {
$this->groupMapper = $mapper;
}
/**
* returns the Group Mapper
* @throws \Exception
* @return AbstractMapping
*/
public function getGroupMapper() {
if(is_null($this->groupMapper)) {
throw new \Exception('GroupMapper was not assigned to this Access instance.');
}
return $this->groupMapper;
}
/**
* @return bool
*/
private function checkConnection() {
return ($this->connection instanceof Connection);
}
/**
* returns the Connection instance
* @return \OCA\user_ldap\lib\Connection
*/
public function getConnection() {
return $this->connection;
}
/**
* reads a given attribute for an LDAP record identified by a DN
* @param string $dn the record in question
* @param string $attr the attribute that shall be retrieved
* if empty, just check the record's existence
* @param string $filter
* @return array|false an array of values on success or an empty
* array if $attr is empty, false otherwise
*/
public function readAttribute($dn, $attr, $filter = 'objectClass=*') {
if(!$this->checkConnection()) {
\OCP\Util::writeLog('user_ldap',
'No LDAP Connector assigned, access impossible for readAttribute.',
\OCP\Util::WARN);
return false;
}
$cr = $this->connection->getConnectionResource();
if(!$this->ldap->isResource($cr)) {
//LDAP not available
\OCP\Util::writeLog('user_ldap', 'LDAP resource not available.', \OCP\Util::DEBUG);
return false;
}
//Cancel possibly running Paged Results operation, otherwise we run in
//LDAP protocol errors
$this->abandonPagedSearch();
// openLDAP requires that we init a new Paged Search. Not needed by AD,
// but does not hurt either.
$pagingSize = intval($this->connection->ldapPagingSize);
// 0 won't result in replies, small numbers may leave out groups
// (cf. #12306), 500 is default for paging and should work everywhere.
$maxResults = $pagingSize < 20 ? $pagingSize : 500;
$this->initPagedSearch($filter, array($dn), array($attr), $maxResults, 0);
$dn = $this->DNasBaseParameter($dn);
$rr = @$this->ldap->read($cr, $dn, $filter, array($attr));
if(!$this->ldap->isResource($rr)) {
if(!empty($attr)) {
//do not throw this message on userExists check, irritates
\OCP\Util::writeLog('user_ldap', 'readAttribute failed for DN '.$dn, \OCP\Util::DEBUG);
}
//in case an error occurs , e.g. object does not exist
return false;
}
if (empty($attr)) {
\OCP\Util::writeLog('user_ldap', 'readAttribute: '.$dn.' found', \OCP\Util::DEBUG);
return array();
}
$er = $this->ldap->firstEntry($cr, $rr);
if(!$this->ldap->isResource($er)) {
//did not match the filter, return false
return false;
}
//LDAP attributes are not case sensitive
$result = \OCP\Util::mb_array_change_key_case(
$this->ldap->getAttributes($cr, $er), MB_CASE_LOWER, 'UTF-8');
$attr = mb_strtolower($attr, 'UTF-8');
if(isset($result[$attr]) && $result[$attr]['count'] > 0) {
$values = array();
for($i=0;$i<$result[$attr]['count'];$i++) {
if($this->resemblesDN($attr)) {
$values[] = $this->sanitizeDN($result[$attr][$i]);
} elseif(strtolower($attr) === 'objectguid' || strtolower($attr) === 'guid') {
$values[] = $this->convertObjectGUID2Str($result[$attr][$i]);
} else {
$values[] = $result[$attr][$i];
}
}
return $values;
}
\OCP\Util::writeLog('user_ldap', 'Requested attribute '.$attr.' not found for '.$dn, \OCP\Util::DEBUG);
return false;
}
/**
* checks whether the given attributes value is probably a DN
* @param string $attr the attribute in question
* @return boolean if so true, otherwise false
*/
private function resemblesDN($attr) {
$resemblingAttributes = array(
'dn',
'uniquemember',
'member'
);
return in_array($attr, $resemblingAttributes);
}
/**
* checks whether the given string is probably a DN
* @param string $string
* @return boolean
*/
public function stringResemblesDN($string) {
$r = $this->ldap->explodeDN($string, 0);
// if exploding a DN succeeds and does not end up in
// an empty array except for $r[count] being 0.
return (is_array($r) && count($r) > 1);
}
/**
* sanitizes a DN received from the LDAP server
* @param array $dn the DN in question
* @return array the sanitized DN
*/
private function sanitizeDN($dn) {
//treating multiple base DNs
if(is_array($dn)) {
$result = array();
foreach($dn as $singleDN) {
$result[] = $this->sanitizeDN($singleDN);
}
return $result;
}
//OID sometimes gives back DNs with whitespace after the comma
// a la "uid=foo, cn=bar, dn=..." We need to tackle this!
$dn = preg_replace('/([^\\\]),(\s+)/u', '\1,', $dn);
//make comparisons and everything work
$dn = mb_strtolower($dn, 'UTF-8');
//escape DN values according to RFC 2253 – this is already done by ldap_explode_dn
//to use the DN in search filters, \ needs to be escaped to \5c additionally
//to use them in bases, we convert them back to simple backslashes in readAttribute()
$replacements = array(
'\,' => '\5c2C',
'\=' => '\5c3D',
'\+' => '\5c2B',
'\<' => '\5c3C',
'\>' => '\5c3E',
'\;' => '\5c3B',
'\"' => '\5c22',
'\#' => '\5c23',
'(' => '\28',
')' => '\29',
'*' => '\2A',
);
$dn = str_replace(array_keys($replacements), array_values($replacements), $dn);
return $dn;
}
/**
* returns a DN-string that is cleaned from not domain parts, e.g.
* cn=foo,cn=bar,dc=foobar,dc=server,dc=org
* becomes dc=foobar,dc=server,dc=org
* @param string $dn
* @return string
*/
public function getDomainDNFromDN($dn) {
$allParts = $this->ldap->explodeDN($dn, 0);
if($allParts === false) {
//not a valid DN
return '';
}
$domainParts = array();
$dcFound = false;
foreach($allParts as $part) {
if(!$dcFound && strpos($part, 'dc=') === 0) {
$dcFound = true;
}
if($dcFound) {
$domainParts[] = $part;
}
}
$domainDN = implode(',', $domainParts);
return $domainDN;
}
/**
* returns the LDAP DN for the given internal ownCloud name of the group
* @param string $name the ownCloud name in question
* @return string|false LDAP DN on success, otherwise false
*/
public function groupname2dn($name) {
return $this->groupMapper->getDNbyName($name);
}
/**
* returns the LDAP DN for the given internal ownCloud name of the user
* @param string $name the ownCloud name in question
* @return string with the LDAP DN on success, otherwise false
*/
public function username2dn($name) {
$fdn = $this->userMapper->getDNbyName($name);
//Check whether the DN belongs to the Base, to avoid issues on multi-
//server setups
if(is_string($fdn) && $this->isDNPartOfBase($fdn, $this->connection->ldapBaseUsers)) {
return $fdn;
}
return false;
}
/**
public function ocname2dn($name, $isUser) {
* returns the internal ownCloud name for the given LDAP DN of the group, false on DN outside of search DN or failure
* @param string $fdn the dn of the group object
* @param string $ldapName optional, the display name of the object
* @return string with the name to use in ownCloud, false on DN outside of search DN
*/
public function dn2groupname($fdn, $ldapName = null) {
//To avoid bypassing the base DN settings under certain circumstances
//with the group support, check whether the provided DN matches one of
//the given Bases
if(!$this->isDNPartOfBase($fdn, $this->connection->ldapBaseGroups)) {
return false;
}
return $this->dn2ocname($fdn, $ldapName, false);
}
/**
* returns the internal ownCloud name for the given LDAP DN of the user, false on DN outside of search DN or failure
* @param string $dn the dn of the user object
* @param string $ldapName optional, the display name of the object
* @return string with with the name to use in ownCloud
*/
public function dn2username($fdn, $ldapName = null) {
//To avoid bypassing the base DN settings under certain circumstances
//with the group support, check whether the provided DN matches one of
//the given Bases
if(!$this->isDNPartOfBase($fdn, $this->connection->ldapBaseUsers)) {
return false;
}
return $this->dn2ocname($fdn, $ldapName, true);
}
/**
* returns an internal ownCloud name for the given LDAP DN, false on DN outside of search DN
* @param string $dn the dn of the user object
* @param string $ldapName optional, the display name of the object
* @param bool $isUser optional, whether it is a user object (otherwise group assumed)
* @return string with with the name to use in ownCloud
*/
public function dn2ocname($fdn, $ldapName = null, $isUser = true) {
if($isUser) {
$mapper = $this->getUserMapper();
$nameAttribute = $this->connection->ldapUserDisplayName;
} else {
$mapper = $this->getGroupMapper();
$nameAttribute = $this->connection->ldapGroupDisplayName;
}
//let's try to retrieve the ownCloud name from the mappings table
$ocName = $mapper->getNameByDN($fdn);
if(is_string($ocName)) {
return $ocName;
}
//second try: get the UUID and check if it is known. Then, update the DN and return the name.
$uuid = $this->getUUID($fdn, $isUser);
if(is_string($uuid)) {
$ocName = $mapper->getNameByUUID($uuid);
if(is_string($ocName)) {
$mapper->setDNbyUUID($fdn, $uuid);
return $ocName;
}
} else {
//If the UUID can't be detected something is foul.
\OCP\Util::writeLog('user_ldap', 'Cannot determine UUID for '.$fdn.'. Skipping.', \OCP\Util::INFO);
return false;
}
if(is_null($ldapName)) {
$ldapName = $this->readAttribute($fdn, $nameAttribute);
if(!isset($ldapName[0]) && empty($ldapName[0])) {
\OCP\Util::writeLog('user_ldap', 'No or empty name for '.$fdn.'.', \OCP\Util::INFO);
return false;
}
$ldapName = $ldapName[0];
}
if($isUser) {
$usernameAttribute = $this->connection->ldapExpertUsernameAttr;
if(!empty($usernameAttribute)) {
$username = $this->readAttribute($fdn, $usernameAttribute);
$username = $username[0];
} else {
$username = $uuid;
}
$intName = $this->sanitizeUsername($username);
} else {
$intName = $ldapName;
}
//a new user/group! Add it only if it doesn't conflict with other backend's users or existing groups
//disabling Cache is required to avoid that the new user is cached as not-existing in fooExists check
//NOTE: mind, disabling cache affects only this instance! Using it
// outside of core user management will still cache the user as non-existing.
$originalTTL = $this->connection->ldapCacheTTL;
$this->connection->setConfiguration(array('ldapCacheTTL' => 0));
if(($isUser && !\OCP\User::userExists($intName))
|| (!$isUser && !\OC_Group::groupExists($intName))) {
if($mapper->map($fdn, $intName, $uuid)) {
$this->connection->setConfiguration(array('ldapCacheTTL' => $originalTTL));
return $intName;
}
}
$this->connection->setConfiguration(array('ldapCacheTTL' => $originalTTL));
$altName = $this->createAltInternalOwnCloudName($intName, $isUser);
if(is_string($altName) && $mapper->map($fdn, $altName, $uuid)) {
return $altName;
}
//if everything else did not help..
\OCP\Util::writeLog('user_ldap', 'Could not create unique name for '.$fdn.'.', \OCP\Util::INFO);
return false;
}
/**
* gives back the user names as they are used ownClod internally
* @param array $ldapUsers an array with the ldap Users result in style of array ( array ('dn' => foo, 'uid' => bar), ... )
* @return array an array with the user names to use in ownCloud
*
* gives back the user names as they are used ownClod internally
*/
public function ownCloudUserNames($ldapUsers) {
return $this->ldap2ownCloudNames($ldapUsers, true);
}
/**
* gives back the group names as they are used ownClod internally
* @param array $ldapGroups an array with the ldap Groups result in style of array ( array ('dn' => foo, 'cn' => bar), ... )
* @return array an array with the group names to use in ownCloud
*
* gives back the group names as they are used ownClod internally
*/
public function ownCloudGroupNames($ldapGroups) {
return $this->ldap2ownCloudNames($ldapGroups, false);
}
/**
* @param array $ldapObjects
* @param bool $isUsers
* @return array
*/
private function ldap2ownCloudNames($ldapObjects, $isUsers) {
if($isUsers) {
$nameAttribute = $this->connection->ldapUserDisplayName;
} else {
$nameAttribute = $this->connection->ldapGroupDisplayName;
}
$ownCloudNames = array();
foreach($ldapObjects as $ldapObject) {
$nameByLDAP = isset($ldapObject[$nameAttribute]) ? $ldapObject[$nameAttribute] : null;
$ocName = $this->dn2ocname($ldapObject['dn'], $nameByLDAP, $isUsers);
if($ocName) {
$ownCloudNames[] = $ocName;
if($isUsers) {
//cache the user names so it does not need to be retrieved
//again later (e.g. sharing dialogue).
$this->cacheUserExists($ocName);
$this->cacheUserDisplayName($ocName, $nameByLDAP);
}
}
continue;
}
return $ownCloudNames;
}
/**
* caches a user as existing
* @param string $ocName the internal ownCloud username
*/
public function cacheUserExists($ocName) {
$this->connection->writeToCache('userExists'.$ocName, true);
}
/**
* caches the user display name
* @param string $ocName the internal ownCloud username
* @param string $displayName the display name
*/
public function cacheUserDisplayName($ocName, $displayName) {
$cacheKeyTrunk = 'getDisplayName';
$this->connection->writeToCache($cacheKeyTrunk.$ocName, $displayName);
}
/**
* creates a unique name for internal ownCloud use for users. Don't call it directly.
* @param string $name the display name of the object
* @return string with with the name to use in ownCloud or false if unsuccessful
*
* Instead of using this method directly, call
* createAltInternalOwnCloudName($name, true)
*/
private function _createAltInternalOwnCloudNameForUsers($name) {
$attempts = 0;
//while loop is just a precaution. If a name is not generated within
//20 attempts, something else is very wrong. Avoids infinite loop.
while($attempts < 20){
$altName = $name . '_' . rand(1000,9999);
if(!\OCP\User::userExists($altName)) {
return $altName;
}
$attempts++;
}
return false;
}
/**
* creates a unique name for internal ownCloud use for groups. Don't call it directly.
* @param string $name the display name of the object
* @return string with with the name to use in ownCloud or false if unsuccessful.
*
* Instead of using this method directly, call
* createAltInternalOwnCloudName($name, false)
*
* Group names are also used as display names, so we do a sequential
* numbering, e.g. Developers_42 when there are 41 other groups called
* "Developers"
*/
private function _createAltInternalOwnCloudNameForGroups($name) {
$usedNames = $this->groupMapper->getNamesBySearch($name.'_%');
if(!($usedNames) || count($usedNames) === 0) {
$lastNo = 1; //will become name_2
} else {
natsort($usedNames);
$lastName = array_pop($usedNames);
$lastNo = intval(substr($lastName, strrpos($lastName, '_') + 1));
}
$altName = $name.'_'.strval($lastNo+1);
unset($usedNames);
$attempts = 1;
while($attempts < 21){
// Check to be really sure it is unique
// while loop is just a precaution. If a name is not generated within
// 20 attempts, something else is very wrong. Avoids infinite loop.
if(!\OC_Group::groupExists($altName)) {
return $altName;
}
$altName = $name . '_' . ($lastNo + $attempts);
$attempts++;
}
return false;
}
/**
* creates a unique name for internal ownCloud use.
* @param string $name the display name of the object
* @param boolean $isUser whether name should be created for a user (true) or a group (false)
* @return string with with the name to use in ownCloud or false if unsuccessful
*/
private function createAltInternalOwnCloudName($name, $isUser) {
$originalTTL = $this->connection->ldapCacheTTL;
$this->connection->setConfiguration(array('ldapCacheTTL' => 0));
if($isUser) {
$altName = $this->_createAltInternalOwnCloudNameForUsers($name);
} else {
$altName = $this->_createAltInternalOwnCloudNameForGroups($name);
}
$this->connection->setConfiguration(array('ldapCacheTTL' => $originalTTL));
return $altName;
}
/**
* @param string $filter
* @param string|string[] $attr
* @param int $limit
* @param int $offset
* @return array
*/
public function fetchListOfUsers($filter, $attr, $limit = null, $offset = null) {
return $this->fetchList($this->searchUsers($filter, $attr, $limit, $offset), (count($attr) > 1));
}
/**
* @param string $filter
* @param string|string[] $attr
* @param int $limit
* @param int $offset
* @return array
*/
public function fetchListOfGroups($filter, $attr, $limit = null, $offset = null) {
return $this->fetchList($this->searchGroups($filter, $attr, $limit, $offset), (count($attr) > 1));
}
/**
* @param array $list
* @param bool $manyAttributes
* @return array
*/
private function fetchList($list, $manyAttributes) {
if(is_array($list)) {
if($manyAttributes) {
return $list;
} else {
return array_unique($list, SORT_LOCALE_STRING);
}
}
//error cause actually, maybe throw an exception in future.
return array();
}
/**
* executes an LDAP search, optimized for Users
* @param string $filter the LDAP filter for the search
* @param string|string[] $attr optional, when a certain attribute shall be filtered out
* @param integer $limit
* @param integer $offset
* @return array with the search result
*
* Executes an LDAP search
*/
public function searchUsers($filter, $attr = null, $limit = null, $offset = null) {
return $this->search($filter, $this->connection->ldapBaseUsers, $attr, $limit, $offset);
}
/**
* @param string $filter
* @param string|string[] $attr
* @param int $limit
* @param int $offset
* @return false|int
*/
public function countUsers($filter, $attr = array('dn'), $limit = null, $offset = null) {
return $this->count($filter, $this->connection->ldapBaseUsers, $attr, $limit, $offset);
}
/**
* executes an LDAP search, optimized for Groups
* @param string $filter the LDAP filter for the search
* @param string|string[] $attr optional, when a certain attribute shall be filtered out
* @param integer $limit
* @param integer $offset
* @return array with the search result
*
* Executes an LDAP search
*/
public function searchGroups($filter, $attr = null, $limit = null, $offset = null) {
return $this->search($filter, $this->connection->ldapBaseGroups, $attr, $limit, $offset);
}
/**
* returns the number of available groups
* @param string $filter the LDAP search filter
* @param string[] $attr optional
* @param int|null $limit
* @param int|null $offset
* @return int|bool
*/
public function countGroups($filter, $attr = array('dn'), $limit = null, $offset = null) {
return $this->count($filter, $this->connection->ldapBaseGroups, $attr, $limit, $offset);
}
/**
* retrieved. Results will according to the order in the array.
* @param int $limit optional, maximum results to be counted
* @param int $offset optional, a starting point
* @return array|false array with the search result as first value and pagedSearchOK as
* second | false if not successful
*/
private function executeSearch($filter, $base, &$attr = null, $limit = null, $offset = null) {
if(!is_null($attr) && !is_array($attr)) {
$attr = array(mb_strtolower($attr, 'UTF-8'));
}
// See if we have a resource, in case not cancel with message
$cr = $this->connection->getConnectionResource();
if(!$this->ldap->isResource($cr)) {
// Seems like we didn't find any resource.
// Return an empty array just like before.
\OCP\Util::writeLog('user_ldap', 'Could not search, because resource is missing.', \OCP\Util::DEBUG);
return false;
}
//check whether paged search should be attempted
$pagedSearchOK = $this->initPagedSearch($filter, $base, $attr, intval($limit), $offset);
$linkResources = array_pad(array(), count($base), $cr);
$sr = $this->ldap->search($linkResources, $base, $filter, $attr);
$error = $this->ldap->errno($cr);
if(!is_array($sr) || $error !== 0) {
\OCP\Util::writeLog('user_ldap',
'Error when searching: '.$this->ldap->error($cr).
' code '.$this->ldap->errno($cr),
\OCP\Util::ERROR);
\OCP\Util::writeLog('user_ldap', 'Attempt for Paging? '.print_r($pagedSearchOK, true), \OCP\Util::ERROR);
return false;
}
return array($sr, $pagedSearchOK);
}
/**
* processes an LDAP paged search operation
* @param array $sr the array containing the LDAP search resources
* @param string $filter the LDAP filter for the search
* @param array $base an array containing the LDAP subtree(s) that shall be searched
* @param int $iFoundItems number of results in the search operation
* @param int $limit maximum results to be counted
* @param int $offset a starting point
* @param bool $pagedSearchOK whether a paged search has been executed
* @param bool $skipHandling required for paged search when cookies to
* prior results need to be gained
* @return array|false array with the search result as first value and pagedSearchOK as
* second | false if not successful
*/
private function processPagedSearchStatus($sr, $filter, $base, $iFoundItems, $limit, $offset, $pagedSearchOK, $skipHandling) {
if($pagedSearchOK) {
$cr = $this->connection->getConnectionResource();
foreach($sr as $key => $res) {
$cookie = null;
if($this->ldap->controlPagedResultResponse($cr, $res, $cookie)) {
$this->setPagedResultCookie($base[$key], $filter, $limit, $offset, $cookie);
}
}
//browsing through prior pages to get the cookie for the new one
if($skipHandling) {
return;
}
// if count is bigger, then the server does not support
// paged search. Instead, he did a normal search. We set a
// flag here, so the callee knows how to deal with it.
if($iFoundItems <= $limit) {
$this->pagedSearchedSuccessful = true;
}
} else {
if(!is_null($limit)) {
\OCP\Util::writeLog('user_ldap', 'Paged search was not available', \OCP\Util::INFO);
}
}
}
/**
* executes an LDAP search, but counts the results only
* @param string $filter the LDAP filter for the search
* @param array $base an array containing the LDAP subtree(s) that shall be searched
* @param string|string[] $attr optional, array, one or more attributes that shall be
* retrieved. Results will according to the order in the array.
* @param int $limit optional, maximum results to be counted
* @param int $offset optional, a starting point
* @param bool $skipHandling indicates whether the pages search operation is
* completed
* @return int|false Integer or false if the search could not be initialized
*
*/
private function count($filter, $base, $attr = null, $limit = null, $offset = null, $skipHandling = false) {
\OCP\Util::writeLog('user_ldap', 'Count filter: '.print_r($filter, true), \OCP\Util::DEBUG);
$limitPerPage = intval($this->connection->ldapPagingSize);
if(!is_null($limit) && $limit < $limitPerPage && $limit > 0) {
$limitPerPage = $limit;
}
$counter = 0;
$count = null;
$this->connection->getConnectionResource();
do {
$continue = false;
$search = $this->executeSearch($filter, $base, $attr,
$limitPerPage, $offset);
if($search === false) {
return $counter > 0 ? $counter : false;
}
list($sr, $pagedSearchOK) = $search;
$count = $this->countEntriesInSearchResults($sr, $limitPerPage, $continue);
$counter += $count;
$this->processPagedSearchStatus($sr, $filter, $base, $count, $limitPerPage,
$offset, $pagedSearchOK, $skipHandling);
$offset += $limitPerPage;
} while($continue && (is_null($limit) || $limit <= 0 || $limit > $counter));
return $counter;
}
/**
* @param array $searchResults
* @param int $limit
* @param bool $hasHitLimit
* @return int
*/
private function countEntriesInSearchResults($searchResults, $limit, &$hasHitLimit) {
$cr = $this->connection->getConnectionResource();
$counter = 0;
foreach($searchResults as $res) {
$count = intval($this->ldap->countEntries($cr, $res));
$counter += $count;
if($count > 0 && $count === $limit) {
$hasHitLimit = true;
}
}
return $counter;
}
/**
* Executes an LDAP search
* @param string $filter the LDAP filter for the search
* @param array $base an array containing the LDAP subtree(s) that shall be searched
* @param string|string[] $attr optional, array, one or more attributes that shall be
* @param int $limit
* @param int $offset
* @param bool $skipHandling
* @return array with the search result
*/
private function search($filter, $base, $attr = null, $limit = null, $offset = null, $skipHandling = false) {
if($limit <= 0) {
//otherwise search will fail
$limit = null;
}
$search = $this->executeSearch($filter, $base, $attr, $limit, $offset);
if($search === false) {
return array();
}
list($sr, $pagedSearchOK) = $search;
$cr = $this->connection->getConnectionResource();
if($skipHandling) {
//i.e. result do not need to be fetched, we just need the cookie
//thus pass 1 or any other value as $iFoundItems because it is not
//used
$this->processPagedSearchStatus($sr, $filter, $base, 1, $limit,
$offset, $pagedSearchOK,
$skipHandling);
return array();
}
// Do the server-side sorting
foreach(array_reverse($attr) as $sortAttr){
foreach($sr as $searchResource) {
$this->ldap->sort($cr, $searchResource, $sortAttr);
}
}
$findings = array();
foreach($sr as $res) {
$findings = array_merge($findings, $this->ldap->getEntries($cr , $res ));
}
$this->processPagedSearchStatus($sr, $filter, $base, $findings['count'],
$limit, $offset, $pagedSearchOK,
$skipHandling);
// if we're here, probably no connection resource is returned.
// to make ownCloud behave nicely, we simply give back an empty array.
if(is_null($findings)) {
return array();
}
if(!is_null($attr)) {
$selection = array();
$multiArray = false;
if(count($attr) > 1) {
$multiArray = true;
$i = 0;
}
foreach($findings as $item) {
if(!is_array($item)) {
continue;
}
$item = \OCP\Util::mb_array_change_key_case($item, MB_CASE_LOWER, 'UTF-8');
if($multiArray) {
foreach($attr as $key) {
$key = mb_strtolower($key, 'UTF-8');
if(isset($item[$key])) {
if($key !== 'dn') {
$selection[$i][$key] = $this->resemblesDN($key) ?
$this->sanitizeDN($item[$key][0])
: $item[$key][0];
} else {
$selection[$i][$key] = $this->sanitizeDN($item[$key]);
}
}
}
$i++;
} else {
//tribute to case insensitivity
$key = mb_strtolower($attr[0], 'UTF-8');
if(isset($item[$key])) {
if($this->resemblesDN($key)) {
$selection[] = $this->sanitizeDN($item[$key]);
} else {
$selection[] = $item[$key];
}
}
}
}
$findings = $selection;
}
//we slice the findings, when
//a) paged search unsuccessful, though attempted
//b) no paged search, but limit set
if((!$this->getPagedSearchResultState()
&& $pagedSearchOK)
|| (
!$pagedSearchOK
&& !is_null($limit)
)
) {
$findings = array_slice($findings, intval($offset), $limit);
}
return $findings;
}
/**
* @param string $name
* @return bool|mixed|string
*/
public function sanitizeUsername($name) {
if($this->connection->ldapIgnoreNamingRules) {
return $name;
}
// Transliteration
// latin characters to ASCII
$name = iconv('UTF-8', 'ASCII//TRANSLIT', $name);
// Replacements
$name = \OCP\Util::mb_str_replace(' ', '_', $name, 'UTF-8');
// Every remaining disallowed characters will be removed
$name = preg_replace('/[^a-zA-Z0-9_.@-]/u', '', $name);
return $name;
}
/**
* escapes (user provided) parts for LDAP filter
* @param string $input, the provided value
* @param bool $allowAsterisk wether in * at the beginning should be preserved
* @return string the escaped string
*/
public function escapeFilterPart($input, $allowAsterisk = false) {
$asterisk = '';
if($allowAsterisk && strlen($input) > 0 && $input[0] === '*') {
$asterisk = '*';
$input = mb_substr($input, 1, null, 'UTF-8');
}
$search = array('*', '\\', '(', ')');
$replace = array('\\*', '\\\\', '\\(', '\\)');
return $asterisk . str_replace($search, $replace, $input);
}
/**
* combines the input filters with AND
* @param string[] $filters the filters to connect
* @return string the combined filter
*/
public function combineFilterWithAnd($filters) {
return $this->combineFilter($filters, '&');
}
/**
* combines the input filters with OR
* @param string[] $filters the filters to connect
* @return string the combined filter
* Combines Filter arguments with OR
*/
public function combineFilterWithOr($filters) {
return $this->combineFilter($filters, '|');
}
/**
* combines the input filters with given operator
* @param string[] $filters the filters to connect
* @param string $operator either & or |
* @return string the combined filter
*/
private function combineFilter($filters, $operator) {