ee168a121d
add ldap-search command to occ Conflicts: apps/user_ldap/appinfo/register_command.php LDAP search filter creation changes: 1. do not prepend * wildcard to search terms. Will result in faster search, but you don't find "foobar" when looking for "bar" 2. advanced behaviour when search string contains a space and multiple search attributes are present. The search string is split into single words. The resulting filter requires that each word at least appears once in any search attribute. This is supposed to return better results in big LDAPs. trim search string before passing it on
1572 lines
48 KiB
PHP
1572 lines
48 KiB
PHP
<?php
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/**
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* ownCloud – LDAP Access
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*
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* @author Arthur Schiwon
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* @copyright 2012, 2013 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\lib;
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/**
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* Class Access
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* @package OCA\user_ldap\lib
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*/
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class Access extends LDAPUtility implements user\IUserTools {
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/**
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* @var \OCA\user_ldap\lib\Connection
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*/
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public $connection;
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public $userManager;
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//never ever check this var directly, always use getPagedSearchResultState
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protected $pagedSearchedSuccessful;
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/**
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* @var string[] $cookies an array of returned Paged Result cookies
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*/
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protected $cookies = array();
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/**
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* @var string $lastCookie the last cookie returned from a Paged Results
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* operation, defaults to an empty string
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*/
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protected $lastCookie = '';
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public function __construct(Connection $connection, ILDAPWrapper $ldap,
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user\Manager $userManager) {
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parent::__construct($ldap);
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$this->connection = $connection;
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$this->userManager = $userManager;
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$this->userManager->setLdapAccess($this);
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}
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/**
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* @return bool
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*/
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private function checkConnection() {
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return ($this->connection instanceof Connection);
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}
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/**
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* returns the Connection instance
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* @return \OCA\user_ldap\lib\Connection
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*/
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public function getConnection() {
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return $this->connection;
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}
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/**
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* reads a given attribute for an LDAP record identified by a DN
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* @param string $dn the record in question
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* @param string $attr the attribute that shall be retrieved
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* if empty, just check the record's existence
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* @param string $filter
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* @return array|false an array of values on success or an empty
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* array if $attr is empty, false otherwise
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*/
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public function readAttribute($dn, $attr, $filter = 'objectClass=*') {
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if(!$this->checkConnection()) {
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\OCP\Util::writeLog('user_ldap',
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'No LDAP Connector assigned, access impossible for readAttribute.',
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\OCP\Util::WARN);
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return false;
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}
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$cr = $this->connection->getConnectionResource();
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if(!$this->ldap->isResource($cr)) {
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//LDAP not available
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\OCP\Util::writeLog('user_ldap', 'LDAP resource not available.', \OCP\Util::DEBUG);
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return false;
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}
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//Cancel possibly running Paged Results operation, otherwise we run in
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//LDAP protocol errors
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$this->abandonPagedSearch();
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// openLDAP requires that we init a new Paged Search. Not needed by AD,
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// but does not hurt either.
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$this->initPagedSearch($filter, array($dn), array($attr), 1, 0);
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$dn = $this->DNasBaseParameter($dn);
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$rr = @$this->ldap->read($cr, $dn, $filter, array($attr));
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if(!$this->ldap->isResource($rr)) {
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if(!empty($attr)) {
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//do not throw this message on userExists check, irritates
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\OCP\Util::writeLog('user_ldap', 'readAttribute failed for DN '.$dn, \OCP\Util::DEBUG);
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}
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//in case an error occurs , e.g. object does not exist
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return false;
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}
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if (empty($attr)) {
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\OCP\Util::writeLog('user_ldap', 'readAttribute: '.$dn.' found', \OCP\Util::DEBUG);
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return array();
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}
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$er = $this->ldap->firstEntry($cr, $rr);
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if(!$this->ldap->isResource($er)) {
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//did not match the filter, return false
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return false;
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}
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//LDAP attributes are not case sensitive
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$result = \OCP\Util::mb_array_change_key_case(
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$this->ldap->getAttributes($cr, $er), MB_CASE_LOWER, 'UTF-8');
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$attr = mb_strtolower($attr, 'UTF-8');
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if(isset($result[$attr]) && $result[$attr]['count'] > 0) {
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$values = array();
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for($i=0;$i<$result[$attr]['count'];$i++) {
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if($this->resemblesDN($attr)) {
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$values[] = $this->sanitizeDN($result[$attr][$i]);
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} elseif(strtolower($attr) === 'objectguid' || strtolower($attr) === 'guid') {
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$values[] = $this->convertObjectGUID2Str($result[$attr][$i]);
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} else {
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$values[] = $result[$attr][$i];
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}
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}
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return $values;
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}
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\OCP\Util::writeLog('user_ldap', 'Requested attribute '.$attr.' not found for '.$dn, \OCP\Util::DEBUG);
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return false;
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}
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/**
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* checks whether the given attributes value is probably a DN
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* @param string $attr the attribute in question
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* @return boolean if so true, otherwise false
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*/
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private function resemblesDN($attr) {
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$resemblingAttributes = array(
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'dn',
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'uniquemember',
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'member'
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);
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return in_array($attr, $resemblingAttributes);
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}
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/**
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* checks whether the given string is probably a DN
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* @param string $string
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* @return boolean
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*/
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public function stringResemblesDN($string) {
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$r = $this->ldap->explodeDN($string, 0);
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// if exploding a DN succeeds and does not end up in
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// an empty array except for $r[count] being 0.
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return (is_array($r) && count($r) > 1);
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}
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/**
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* sanitizes a DN received from the LDAP server
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* @param array $dn the DN in question
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* @return array the sanitized DN
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*/
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private function sanitizeDN($dn) {
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//treating multiple base DNs
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if(is_array($dn)) {
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$result = array();
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foreach($dn as $singleDN) {
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$result[] = $this->sanitizeDN($singleDN);
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}
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return $result;
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}
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//OID sometimes gives back DNs with whitespace after the comma
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// a la "uid=foo, cn=bar, dn=..." We need to tackle this!
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$dn = preg_replace('/([^\\\]),(\s+)/u', '\1,', $dn);
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//make comparisons and everything work
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$dn = mb_strtolower($dn, 'UTF-8');
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//escape DN values according to RFC 2253 – this is already done by ldap_explode_dn
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//to use the DN in search filters, \ needs to be escaped to \5c additionally
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//to use them in bases, we convert them back to simple backslashes in readAttribute()
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$replacements = array(
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'\,' => '\5c2C',
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'\=' => '\5c3D',
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'\+' => '\5c2B',
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'\<' => '\5c3C',
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'\>' => '\5c3E',
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'\;' => '\5c3B',
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'\"' => '\5c22',
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'\#' => '\5c23',
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'(' => '\28',
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')' => '\29',
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'*' => '\2A',
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);
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$dn = str_replace(array_keys($replacements), array_values($replacements), $dn);
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return $dn;
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}
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/**
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* returns a DN-string that is cleaned from not domain parts, e.g.
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* cn=foo,cn=bar,dc=foobar,dc=server,dc=org
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* becomes dc=foobar,dc=server,dc=org
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* @param string $dn
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* @return string
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*/
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public function getDomainDNFromDN($dn) {
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$allParts = $this->ldap->explodeDN($dn, 0);
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if($allParts === false) {
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//not a valid DN
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return '';
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}
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$domainParts = array();
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$dcFound = false;
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foreach($allParts as $part) {
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if(!$dcFound && strpos($part, 'dc=') === 0) {
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$dcFound = true;
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}
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if($dcFound) {
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$domainParts[] = $part;
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}
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}
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$domainDN = implode(',', $domainParts);
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return $domainDN;
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}
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/**
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* gives back the database table for the query
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* @param bool $isUser
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* @return string
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*/
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private function getMapTable($isUser) {
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if($isUser) {
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return '*PREFIX*ldap_user_mapping';
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} else {
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return '*PREFIX*ldap_group_mapping';
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}
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}
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/**
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* returns the LDAP DN for the given internal ownCloud name of the group
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* @param string $name the ownCloud name in question
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* @return string with the LDAP DN on success, otherwise false
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*/
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public function groupname2dn($name) {
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$dn = $this->ocname2dn($name, false);
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if($dn) {
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return $dn;
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}
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return false;
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}
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/**
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* returns the LDAP DN for the given internal ownCloud name of the user
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* @param string $name the ownCloud name in question
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* @return string with the LDAP DN on success, otherwise false
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*/
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public function username2dn($name) {
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$dn = $this->ocname2dn($name, true);
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//Check whether the DN belongs to the Base, to avoid issues on multi-
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//server setups
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if($dn && $this->isDNPartOfBase($dn, $this->connection->ldapBaseUsers)) {
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return $dn;
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}
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return false;
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}
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/**
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* returns the LDAP DN for the given internal ownCloud name
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* @param string $name the ownCloud name in question
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* @param boolean $isUser is it a user? otherwise group
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* @return string with the LDAP DN on success, otherwise false
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*/
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private function ocname2dn($name, $isUser) {
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$table = $this->getMapTable($isUser);
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$query = \OCP\DB::prepare('
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SELECT `ldap_dn`
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FROM `'.$table.'`
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WHERE `owncloud_name` = ?
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');
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$record = $query->execute(array($name))->fetchOne();
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return $record;
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}
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/**
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* returns the internal ownCloud name for the given LDAP DN of the group, false on DN outside of search DN or failure
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* @param string $dn the dn of the group object
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* @param string $ldapName optional, the display name of the object
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* @return string with the name to use in ownCloud, false on DN outside of search DN
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*/
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public function dn2groupname($dn, $ldapName = null) {
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//To avoid bypassing the base DN settings under certain circumstances
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//with the group support, check whether the provided DN matches one of
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//the given Bases
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if(!$this->isDNPartOfBase($dn, $this->connection->ldapBaseGroups)) {
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return false;
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}
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return $this->dn2ocname($dn, $ldapName, false);
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}
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/**
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* returns the internal ownCloud name for the given LDAP DN of the user, false on DN outside of search DN or failure
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* @param string $dn the dn of the user object
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* @param string $ldapName optional, the display name of the object
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* @return string with with the name to use in ownCloud
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*/
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public function dn2username($dn, $ldapName = null) {
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//To avoid bypassing the base DN settings under certain circumstances
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//with the group support, check whether the provided DN matches one of
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//the given Bases
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if(!$this->isDNPartOfBase($dn, $this->connection->ldapBaseUsers)) {
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return false;
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}
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return $this->dn2ocname($dn, $ldapName, true);
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}
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/**
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* returns an internal ownCloud name for the given LDAP DN, false on DN outside of search DN
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* @param string $dn the dn of the user object
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* @param string $ldapName optional, the display name of the object
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* @param bool $isUser optional, whether it is a user object (otherwise group assumed)
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* @return string with with the name to use in ownCloud
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*/
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public function dn2ocname($dn, $ldapName = null, $isUser = true) {
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$table = $this->getMapTable($isUser);
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if($isUser) {
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$fncFindMappedName = 'findMappedUser';
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$nameAttribute = $this->connection->ldapUserDisplayName;
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} else {
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$fncFindMappedName = 'findMappedGroup';
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$nameAttribute = $this->connection->ldapGroupDisplayName;
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}
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//let's try to retrieve the ownCloud name from the mappings table
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$ocName = $this->$fncFindMappedName($dn);
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if($ocName) {
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return $ocName;
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}
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//second try: get the UUID and check if it is known. Then, update the DN and return the name.
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$uuid = $this->getUUID($dn, $isUser);
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if($uuid) {
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$query = \OCP\DB::prepare('
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SELECT `owncloud_name`
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FROM `'.$table.'`
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WHERE `directory_uuid` = ?
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');
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$component = $query->execute(array($uuid))->fetchOne();
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if($component) {
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$query = \OCP\DB::prepare('
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UPDATE `'.$table.'`
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SET `ldap_dn` = ?
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WHERE `directory_uuid` = ?
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');
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$query->execute(array($dn, $uuid));
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return $component;
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}
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} else {
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//If the UUID can't be detected something is foul.
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\OCP\Util::writeLog('user_ldap', 'Cannot determine UUID for '.$dn.'. Skipping.', \OCP\Util::INFO);
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return false;
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}
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if(is_null($ldapName)) {
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$ldapName = $this->readAttribute($dn, $nameAttribute);
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if(!isset($ldapName[0]) && empty($ldapName[0])) {
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\OCP\Util::writeLog('user_ldap', 'No or empty name for '.$dn.'.', \OCP\Util::INFO);
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return false;
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}
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$ldapName = $ldapName[0];
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}
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if($isUser) {
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$usernameAttribute = $this->connection->ldapExpertUsernameAttr;
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if(!emptY($usernameAttribute)) {
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$username = $this->readAttribute($dn, $usernameAttribute);
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$username = $username[0];
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} else {
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$username = $uuid;
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}
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$intName = $this->sanitizeUsername($username);
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} else {
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$intName = $ldapName;
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}
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//a new user/group! Add it only if it doesn't conflict with other backend's users or existing groups
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//disabling Cache is required to avoid that the new user is cached as not-existing in fooExists check
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//NOTE: mind, disabling cache affects only this instance! Using it
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// outside of core user management will still cache the user as non-existing.
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$originalTTL = $this->connection->ldapCacheTTL;
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$this->connection->setConfiguration(array('ldapCacheTTL' => 0));
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if(($isUser && !\OCP\User::userExists($intName))
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|| (!$isUser && !\OC_Group::groupExists($intName))) {
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if($this->mapComponent($dn, $intName, $isUser)) {
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$this->connection->setConfiguration(array('ldapCacheTTL' => $originalTTL));
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return $intName;
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}
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}
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$this->connection->setConfiguration(array('ldapCacheTTL' => $originalTTL));
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$altName = $this->createAltInternalOwnCloudName($intName, $isUser);
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if($this->mapComponent($dn, $altName, $isUser)) {
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return $altName;
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}
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//if everything else did not help..
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\OCP\Util::writeLog('user_ldap', 'Could not create unique name for '.$dn.'.', \OCP\Util::INFO);
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return false;
|
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}
|
||
|
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/**
|
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* gives back the user names as they are used ownClod internally
|
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* @param array $ldapUsers an array with the ldap Users result in style of array ( array ('dn' => foo, 'uid' => bar), ... )
|
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* @return array an array with the user names to use in ownCloud
|
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*
|
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* gives back the user names as they are used ownClod internally
|
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*/
|
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public function ownCloudUserNames($ldapUsers) {
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return $this->ldap2ownCloudNames($ldapUsers, true);
|
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}
|
||
|
||
/**
|
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* gives back the group names as they are used ownClod internally
|
||
* @param array $ldapGroups an array with the ldap Groups result in style of array ( array ('dn' => foo, 'cn' => bar), ... )
|
||
* @return array an array with the group names to use in ownCloud
|
||
*
|
||
* gives back the group names as they are used ownClod internally
|
||
*/
|
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public function ownCloudGroupNames($ldapGroups) {
|
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return $this->ldap2ownCloudNames($ldapGroups, false);
|
||
}
|
||
|
||
/**
|
||
* @param string $dn
|
||
* @return bool|string
|
||
*/
|
||
private function findMappedUser($dn) {
|
||
static $query = null;
|
||
if(is_null($query)) {
|
||
$query = \OCP\DB::prepare('
|
||
SELECT `owncloud_name`
|
||
FROM `'.$this->getMapTable(true).'`
|
||
WHERE `ldap_dn` = ?'
|
||
);
|
||
}
|
||
$res = $query->execute(array($dn))->fetchOne();
|
||
if($res) {
|
||
return $res;
|
||
}
|
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return false;
|
||
}
|
||
|
||
/**
|
||
* @param string $dn
|
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* @return bool|string
|
||
*/
|
||
private function findMappedGroup($dn) {
|
||
static $query = null;
|
||
if(is_null($query)) {
|
||
$query = \OCP\DB::prepare('
|
||
SELECT `owncloud_name`
|
||
FROM `'.$this->getMapTable(false).'`
|
||
WHERE `ldap_dn` = ?'
|
||
);
|
||
}
|
||
$res = $query->execute(array($dn))->fetchOne();
|
||
if($res) {
|
||
return $res;
|
||
}
|
||
return 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) {
|
||
$query = \OCP\DB::prepare('
|
||
SELECT `owncloud_name`
|
||
FROM `'.$this->getMapTable(false).'`
|
||
WHERE `owncloud_name` LIKE ?
|
||
');
|
||
|
||
$usedNames = array();
|
||
$res = $query->execute(array($name.'_%'));
|
||
while($row = $res->fetchRow()) {
|
||
$usedNames[] = $row['owncloud_name'];
|
||
}
|
||
if(!($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;
|
||
}
|
||
|
||
/**
|
||
* retrieves all known groups from the mappings table
|
||
* @return array with the results
|
||
*
|
||
* retrieves all known groups from the mappings table
|
||
*/
|
||
private function mappedGroups() {
|
||
return $this->mappedComponents(false);
|
||
}
|
||
|
||
/**
|
||
* retrieves all known users from the mappings table
|
||
* @return array with the results
|
||
*
|
||
* retrieves all known users from the mappings table
|
||
*/
|
||
private function mappedUsers() {
|
||
return $this->mappedComponents(true);
|
||
}
|
||
|
||
/**
|
||
* @param boolean $isUsers
|
||
* @return array
|
||
*/
|
||
private function mappedComponents($isUsers) {
|
||
$table = $this->getMapTable($isUsers);
|
||
|
||
$query = \OCP\DB::prepare('
|
||
SELECT `ldap_dn`, `owncloud_name`
|
||
FROM `'. $table . '`'
|
||
);
|
||
|
||
return $query->execute()->fetchAll();
|
||
}
|
||
|
||
/**
|
||
* inserts a new user or group into the mappings table
|
||
* @param string $dn the record in question
|
||
* @param string $ocName the name to use in ownCloud
|
||
* @param bool $isUser is it a user or a group?
|
||
* @return bool true on success, false otherwise
|
||
*
|
||
* inserts a new user or group into the mappings table
|
||
*/
|
||
private function mapComponent($dn, $ocName, $isUser = true) {
|
||
$table = $this->getMapTable($isUser);
|
||
|
||
$sqlAdjustment = '';
|
||
$dbType = \OCP\Config::getSystemValue('dbtype');
|
||
if($dbType === 'mysql' || $dbType == 'oci') {
|
||
$sqlAdjustment = 'FROM DUAL';
|
||
}
|
||
|
||
$insert = \OCP\DB::prepare('
|
||
INSERT INTO `'.$table.'` (`ldap_dn`, `owncloud_name`, `directory_uuid`)
|
||
SELECT ?,?,?
|
||
'.$sqlAdjustment.'
|
||
WHERE NOT EXISTS (
|
||
SELECT 1
|
||
FROM `'.$table.'`
|
||
WHERE `ldap_dn` = ?
|
||
OR `owncloud_name` = ?)
|
||
');
|
||
|
||
//feed the DB
|
||
$insRows = $insert->execute(array($dn, $ocName,
|
||
$this->getUUID($dn, $isUser), $dn,
|
||
$ocName));
|
||
|
||
if(\OCP\DB::isError($insRows)) {
|
||
return false;
|
||
}
|
||
|
||
if($insRows === 0) {
|
||
return false;
|
||
}
|
||
|
||
if($isUser) {
|
||
//make sure that email address is retrieved prior to login, so user
|
||
//will be notified when something is shared with him
|
||
$this->userManager->get($ocName)->update();
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* @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 $input, the provided value
|
||
* @return string the escaped string
|
||
*/
|
||
public function escapeFilterPart($input) {
|
||
$search = array('*', '\\', '(', ')');
|
||
$replace = array('\\*', '\\\\', '\\(', '\\)');
|
||
return str_replace($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) {
|
||
$combinedFilter = '('.$operator;
|
||
foreach($filters as $filter) {
|
||
if(!empty($filter) && $filter[0] !== '(') {
|
||
$filter = '('.$filter.')';
|
||
}
|
||
$combinedFilter.=$filter;
|
||
}
|
||
$combinedFilter.=')';
|
||
return $combinedFilter;
|
||
}
|
||
|
||
/**
|
||
* creates a filter part for to perform search for users
|
||
* @param string $search the search term
|
||
* @return string the final filter part to use in LDAP searches
|
||
*/
|
||
public function getFilterPartForUserSearch($search) {
|
||
return $this->getFilterPartForSearch($search,
|
||
$this->connection->ldapAttributesForUserSearch,
|
||
$this->connection->ldapUserDisplayName);
|
||
}
|
||
|
||
/**
|
||
* creates a filter part for to perform search for groups
|
||
* @param string $search the search term
|
||
* @return string the final filter part to use in LDAP searches
|
||
*/
|
||
public function getFilterPartForGroupSearch($search) {
|
||
return $this->getFilterPartForSearch($search,
|
||
$this->connection->ldapAttributesForGroupSearch,
|
||
$this->connection->ldapGroupDisplayName);
|
||
}
|
||
|
||
/**
|
||
* creates a filter part for searches by splitting up the given search
|
||
* string into single words
|
||
* @param string $search the search term
|
||
* @param string[] $searchAttributes needs to have at least two attributes,
|
||
* otherwise it does not make sense :)
|
||
* @return string the final filter part to use in LDAP searches
|
||
* @throws \Exception
|
||
*/
|
||
private function getAdvancedFilterPartForSearch($search, $searchAttributes) {
|
||
if(!is_array($searchAttributes) || count($searchAttributes) < 2) {
|
||
throw new \Exception('searchAttributes must be an array with at least two string');
|
||
}
|
||
$searchWords = explode(' ', trim($search));
|
||
$wordFilters = array();
|
||
foreach($searchWords as $word) {
|
||
$word .= '*';
|
||
//every word needs to appear at least once
|
||
$wordMatchOneAttrFilters = array();
|
||
foreach($searchAttributes as $attr) {
|
||
$wordMatchOneAttrFilters[] = $attr . '=' . $word;
|
||
}
|
||
$wordFilters[] = $this->combineFilterWithOr($wordMatchOneAttrFilters);
|
||
}
|
||
return $this->combineFilterWithAnd($wordFilters);
|
||
}
|
||
|
||
/**
|
||
* creates a filter part for searches
|
||
* @param string $search the search term
|
||
* @param string[]|null $searchAttributes
|
||
* @param string $fallbackAttribute a fallback attribute in case the user
|
||
* did not define search attributes. Typically the display name attribute.
|
||
* @return string the final filter part to use in LDAP searches
|
||
*/
|
||
private function getFilterPartForSearch($search, $searchAttributes, $fallbackAttribute) {
|
||
$filter = array();
|
||
$haveMultiSearchAttributes = (is_array($searchAttributes) && count($searchAttributes) > 0);
|
||
if($haveMultiSearchAttributes && strpos(trim($search), ' ') !== false) {
|
||
try {
|
||
return $this->getAdvancedFilterPartForSearch($search, $searchAttributes);
|
||
} catch(\Exception $e) {
|
||
\OCP\Util::writeLog(
|
||
'user_ldap',
|
||
'Creating advanced filter for search failed, falling back to simple method.',
|
||
\OCP\Util::INFO
|
||
);
|
||
}
|
||
}
|
||
$search = empty($search) ? '*' : $search.'*';
|
||
if(!is_array($searchAttributes) || count($searchAttributes) === 0) {
|
||
if(empty($fallbackAttribute)) {
|
||
return '';
|
||
}
|
||
$filter[] = $fallbackAttribute . '=' . $search;
|
||
} else {
|
||
foreach($searchAttributes as $attribute) {
|
||
$filter[] = $attribute . '=' . $search;
|
||
}
|
||
}
|
||
if(count($filter) === 1) {
|
||
return '('.$filter[0].')';
|
||
}
|
||
return $this->combineFilterWithOr($filter);
|
||
}
|
||
|
||
/**
|
||
* returns the filter used for counting users
|
||
* @return string
|
||
*/
|
||
public function getFilterForUserCount() {
|
||
$filter = $this->combineFilterWithAnd(array(
|
||
$this->connection->ldapUserFilter,
|
||
$this->connection->ldapUserDisplayName . '=*'
|
||
));
|
||
|
||
return $filter;
|
||
}
|
||
|
||
/**
|
||
* @param string $name
|
||
* @param string $password
|
||
* @return bool
|
||
*/
|
||
public function areCredentialsValid($name, $password) {
|
||
$name = $this->DNasBaseParameter($name);
|
||
$testConnection = clone $this->connection;
|
||
$credentials = array(
|
||
'ldapAgentName' => $name,
|
||
'ldapAgentPassword' => $password
|
||
);
|
||
if(!$testConnection->setConfiguration($credentials)) {
|
||
return false;
|
||
}
|
||
$result=$testConnection->bind();
|
||
$this->connection->bind();
|
||
return $result;
|
||
}
|
||
|
||
/**
|
||
* auto-detects the directory's UUID attribute
|
||
* @param string $dn a known DN used to check against
|
||
* @param bool $isUser
|
||
* @param bool $force the detection should be run, even if it is not set to auto
|
||
* @return bool true on success, false otherwise
|
||
*/
|
||
private function detectUuidAttribute($dn, $isUser = true, $force = false) {
|
||
if($isUser) {
|
||
$uuidAttr = 'ldapUuidUserAttribute';
|
||
$uuidOverride = $this->connection->ldapExpertUUIDUserAttr;
|
||
} else {
|
||
$uuidAttr = 'ldapUuidGroupAttribute';
|
||
$uuidOverride = $this->connection->ldapExpertUUIDGroupAttr;
|
||
}
|
||
|
||
if(($this->connection->$uuidAttr !== 'auto') && !$force) {
|
||
return true;
|
||
}
|
||
|
||
if(!empty($uuidOverride) && !$force) {
|
||
$this->connection->$uuidAttr = $uuidOverride;
|
||
return true;
|
||
}
|
||
|
||
// for now, supported attributes are entryUUID, nsuniqueid, objectGUID, ipaUniqueID
|
||
$testAttributes = array('entryuuid', 'nsuniqueid', 'objectguid', 'guid', 'ipauniqueid');
|
||
|
||
foreach($testAttributes as $attribute) {
|
||
$value = $this->readAttribute($dn, $attribute);
|
||
if(is_array($value) && isset($value[0]) && !empty($value[0])) {
|
||
\OCP\Util::writeLog('user_ldap',
|
||
'Setting '.$attribute.' as '.$uuidAttr,
|
||
\OCP\Util::DEBUG);
|
||
$this->connection->$uuidAttr = $attribute;
|
||
return true;
|
||
}
|
||
}
|
||
\OCP\Util::writeLog('user_ldap',
|
||
'Could not autodetect the UUID attribute',
|
||
\OCP\Util::ERROR);
|
||
|
||
return false;
|
||
}
|
||
|
||
/**
|
||
* @param string $dn
|
||
* @param bool $isUser
|
||
* @return array|bool|false
|
||
*/
|
||
public function getUUID($dn, $isUser = true) {
|
||
if($isUser) {
|
||
$uuidAttr = 'ldapUuidUserAttribute';
|
||
$uuidOverride = $this->connection->ldapExpertUUIDUserAttr;
|
||
} else {
|
||
$uuidAttr = 'ldapUuidGroupAttribute';
|
||
$uuidOverride = $this->connection->ldapExpertUUIDGroupAttr;
|
||
}
|
||
|
||
$uuid = false;
|
||
if($this->detectUuidAttribute($dn, $isUser)) {
|
||
$uuid = $this->readAttribute($dn, $this->connection->$uuidAttr);
|
||
if( !is_array($uuid)
|
||
&& !empty($uuidOverride)
|
||
&& $this->detectUuidAttribute($dn, $isUser, true)) {
|
||
$uuid = $this->readAttribute($dn,
|
||
$this->connection->$uuidAttr);
|
||
}
|
||
if(is_array($uuid) && isset($uuid[0]) && !empty($uuid[0])) {
|
||
$uuid = $uuid[0];
|
||
}
|
||
}
|
||
|
||
return $uuid;
|
||
}
|
||
|
||
/**
|
||
* converts a binary ObjectGUID into a string representation
|
||
* @param string $oguid the ObjectGUID in it's binary form as retrieved from AD
|
||
* @return string
|
||
* @link http://www.php.net/manual/en/function.ldap-get-values-len.php#73198
|
||
*/
|
||
private function convertObjectGUID2Str($oguid) {
|
||
$hex_guid = bin2hex($oguid);
|
||
$hex_guid_to_guid_str = '';
|
||
for($k = 1; $k <= 4; ++$k) {
|
||
$hex_guid_to_guid_str .= substr($hex_guid, 8 - 2 * $k, 2);
|
||
}
|
||
$hex_guid_to_guid_str .= '-';
|
||
for($k = 1; $k <= 2; ++$k) {
|
||
$hex_guid_to_guid_str .= substr($hex_guid, 12 - 2 * $k, 2);
|
||
}
|
||
$hex_guid_to_guid_str .= '-';
|
||
for($k = 1; $k <= 2; ++$k) {
|
||
$hex_guid_to_guid_str .= substr($hex_guid, 16 - 2 * $k, 2);
|
||
}
|
||
$hex_guid_to_guid_str .= '-' . substr($hex_guid, 16, 4);
|
||
$hex_guid_to_guid_str .= '-' . substr($hex_guid, 20);
|
||
|
||
return strtoupper($hex_guid_to_guid_str);
|
||
}
|
||
|
||
/**
|
||
* gets a SID of the domain of the given dn
|
||
* @param string $dn
|
||
* @return string|bool
|
||
*/
|
||
public function getSID($dn) {
|
||
$domainDN = $this->getDomainDNFromDN($dn);
|
||
$cacheKey = 'getSID-'.$domainDN;
|
||
if($this->connection->isCached($cacheKey)) {
|
||
return $this->connection->getFromCache($cacheKey);
|
||
}
|
||
|
||
$objectSid = $this->readAttribute($domainDN, 'objectsid');
|
||
if(!is_array($objectSid) || empty($objectSid)) {
|
||
$this->connection->writeToCache($cacheKey, false);
|
||
return false;
|
||
}
|
||
$domainObjectSid = $this->convertSID2Str($objectSid[0]);
|
||
$this->connection->writeToCache($cacheKey, $domainObjectSid);
|
||
|
||
return $domainObjectSid;
|
||
}
|
||
|
||
/**
|
||
* converts a binary SID into a string representation
|
||
* @param string $sid
|
||
* @return string
|
||
*/
|
||
public function convertSID2Str($sid) {
|
||
// The format of a SID binary string is as follows:
|
||
// 1 byte for the revision level
|
||
// 1 byte for the number n of variable sub-ids
|
||
// 6 bytes for identifier authority value
|
||
// n*4 bytes for n sub-ids
|
||
//
|
||
// Example: 010400000000000515000000a681e50e4d6c6c2bca32055f
|
||
// Legend: RRNNAAAAAAAAAAAA11111111222222223333333344444444
|
||
$revision = ord($sid[0]);
|
||
$numberSubID = ord($sid[1]);
|
||
|
||
$subIdStart = 8; // 1 + 1 + 6
|
||
$subIdLength = 4;
|
||
if (strlen($sid) !== $subIdStart + $subIdLength * $numberSubID) {
|
||
// Incorrect number of bytes present.
|
||
return '';
|
||
}
|
||
|
||
// 6 bytes = 48 bits can be represented using floats without loss of
|
||
// precision (see https://gist.github.com/bantu/886ac680b0aef5812f71)
|
||
$iav = number_format(hexdec(bin2hex(substr($sid, 2, 6))), 0, '', '');
|
||
|
||
$subIDs = array();
|
||
for ($i = 0; $i < $numberSubID; $i++) {
|
||
$subID = unpack('V', substr($sid, $subIdStart + $subIdLength * $i, $subIdLength));
|
||
$subIDs[] = sprintf('%u', $subID[1]);
|
||
}
|
||
|
||
// Result for example above: S-1-5-21-249921958-728525901-1594176202
|
||
return sprintf('S-%d-%s-%s', $revision, $iav, implode('-', $subIDs));
|
||
}
|
||
|
||
/**
|
||
* converts a stored DN so it can be used as base parameter for LDAP queries, internally we store them for usage in LDAP filters
|
||
* @param string $dn the DN
|
||
* @return string
|
||
*/
|
||
private function DNasBaseParameter($dn) {
|
||
return str_ireplace('\\5c', '\\', $dn);
|
||
}
|
||
|
||
/**
|
||
* checks if the given DN is part of the given base DN(s)
|
||
* @param string $dn the DN
|
||
* @param string[] $bases array containing the allowed base DN or DNs
|
||
* @return bool
|
||
*/
|
||
public function isDNPartOfBase($dn, $bases) {
|
||
$belongsToBase = false;
|
||
$bases = $this->sanitizeDN($bases);
|
||
|
||
foreach($bases as $base) {
|
||
$belongsToBase = true;
|
||
if(mb_strripos($dn, $base, 0, 'UTF-8') !== (mb_strlen($dn, 'UTF-8')-mb_strlen($base, 'UTF-8'))) {
|
||
$belongsToBase = false;
|
||
}
|
||
if($belongsToBase) {
|
||
break;
|
||
}
|
||
}
|
||
return $belongsToBase;
|
||
}
|
||
|
||
/**
|
||
* resets a running Paged Search operation
|
||
*/
|
||
private function abandonPagedSearch() {
|
||
if($this->connection->hasPagedResultSupport) {
|
||
$cr = $this->connection->getConnectionResource();
|
||
$this->ldap->controlPagedResult($cr, 0, false, $this->lastCookie);
|
||
$this->getPagedSearchResultState();
|
||
$this->lastCookie = '';
|
||
$this->cookies = array();
|
||
}
|
||
}
|
||
|
||
/**
|
||
* get a cookie for the next LDAP paged search
|
||
* @param string $base a string with the base DN for the search
|
||
* @param string $filter the search filter to identify the correct search
|
||
* @param int $limit the limit (or 'pageSize'), to identify the correct search well
|
||
* @param int $offset the offset for the new search to identify the correct search really good
|
||
* @return string containing the key or empty if none is cached
|
||
*/
|
||
private function getPagedResultCookie($base, $filter, $limit, $offset) {
|
||
if($offset === 0) {
|
||
return '';
|
||
}
|
||
$offset -= $limit;
|
||
//we work with cache here
|
||
$cacheKey = 'lc' . crc32($base) . '-' . crc32($filter) . '-' . intval($limit) . '-' . intval($offset);
|
||
$cookie = '';
|
||
if(isset($this->cookies[$cacheKey])) {
|
||
$cookie = $this->cookies[$cacheKey];
|
||
if(is_null($cookie)) {
|
||
$cookie = '';
|
||
}
|
||
}
|
||
return $cookie;
|
||
}
|
||
|
||
/**
|
||
* set a cookie for LDAP paged search run
|
||
* @param string $base a string with the base DN for the search
|
||
* @param string $filter the search filter to identify the correct search
|
||
* @param int $limit the limit (or 'pageSize'), to identify the correct search well
|
||
* @param int $offset the offset for the run search to identify the correct search really good
|
||
* @param string $cookie string containing the cookie returned by ldap_control_paged_result_response
|
||
* @return void
|
||
*/
|
||
private function setPagedResultCookie($base, $filter, $limit, $offset, $cookie) {
|
||
if(!empty($cookie)) {
|
||
$cacheKey = 'lc' . crc32($base) . '-' . crc32($filter) . '-' .intval($limit) . '-' . intval($offset);
|
||
$this->cookies[$cacheKey] = $cookie;
|
||
$this->lastCookie = $cookie;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Check whether the most recent paged search was successful. It flushed the state var. Use it always after a possible paged search.
|
||
* @return boolean|null true on success, null or false otherwise
|
||
*/
|
||
public function getPagedSearchResultState() {
|
||
$result = $this->pagedSearchedSuccessful;
|
||
$this->pagedSearchedSuccessful = null;
|
||
return $result;
|
||
}
|
||
|
||
/**
|
||
* Prepares a paged search, if possible
|
||
* @param string $filter the LDAP filter for the search
|
||
* @param string[] $bases an array containing the LDAP subtree(s) that shall be searched
|
||
* @param string[] $attr optional, when a certain attribute shall be filtered outside
|
||
* @param int $limit
|
||
* @param int $offset
|
||
* @return bool|true
|
||
*/
|
||
private function initPagedSearch($filter, $bases, $attr, $limit, $offset) {
|
||
$pagedSearchOK = false;
|
||
if($this->connection->hasPagedResultSupport && ($limit !== 0)) {
|
||
$offset = intval($offset); //can be null
|
||
\OCP\Util::writeLog('user_ldap',
|
||
'initializing paged search for Filter '.$filter.' base '.print_r($bases, true)
|
||
.' attr '.print_r($attr, true). ' limit ' .$limit.' offset '.$offset,
|
||
\OCP\Util::DEBUG);
|
||
//get the cookie from the search for the previous search, required by LDAP
|
||
foreach($bases as $base) {
|
||
|
||
$cookie = $this->getPagedResultCookie($base, $filter, $limit, $offset);
|
||
if(empty($cookie) && ($offset > 0)) {
|
||
// no cookie known, although the offset is not 0. Maybe cache run out. We need
|
||
// to start all over *sigh* (btw, Dear Reader, did you know LDAP paged
|
||
// searching was designed by MSFT?)
|
||
// Lukas: No, but thanks to reading that source I finally know!
|
||
$reOffset = ($offset - $limit) < 0 ? 0 : $offset - $limit;
|
||
//a bit recursive, $offset of 0 is the exit
|
||
\OCP\Util::writeLog('user_ldap', 'Looking for cookie L/O '.$limit.'/'.$reOffset, \OCP\Util::INFO);
|
||
$this->search($filter, array($base), $attr, $limit, $reOffset, true);
|
||
$cookie = $this->getPagedResultCookie($base, $filter, $limit, $offset);
|
||
//still no cookie? obviously, the server does not like us. Let's skip paging efforts.
|
||
//TODO: remember this, probably does not change in the next request...
|
||
if(empty($cookie)) {
|
||
$cookie = null;
|
||
}
|
||
}
|
||
if(!is_null($cookie)) {
|
||
//since offset = 0, this is a new search. We abandon other searches that might be ongoing.
|
||
$this->abandonPagedSearch();
|
||
$pagedSearchOK = $this->ldap->controlPagedResult(
|
||
$this->connection->getConnectionResource(), $limit,
|
||
false, $cookie);
|
||
if(!$pagedSearchOK) {
|
||
return false;
|
||
}
|
||
\OCP\Util::writeLog('user_ldap', 'Ready for a paged search', \OCP\Util::INFO);
|
||
} else {
|
||
\OCP\Util::writeLog('user_ldap',
|
||
'No paged search for us, Cpt., Limit '.$limit.' Offset '.$offset,
|
||
\OCP\Util::INFO);
|
||
}
|
||
|
||
}
|
||
}
|
||
|
||
return $pagedSearchOK;
|
||
}
|
||
|
||
}
|