335 lines
9.0 KiB
PHP
335 lines
9.0 KiB
PHP
<?php
|
||
/**
|
||
* @copyright Copyright (c) 2016, ownCloud, Inc.
|
||
*
|
||
* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
|
||
* @author Brice Maron <brice@bmaron.net>
|
||
* @author Christoph Wurst <christoph@winzerhof-wurst.at>
|
||
* @author Joas Schilling <coding@schilljs.com>
|
||
* @author Jörn Friedrich Dreyer <jfd@butonic.de>
|
||
* @author Lukas Reschke <lukas@statuscode.ch>
|
||
* @author Morris Jobke <hey@morrisjobke.de>
|
||
* @author Roeland Jago Douma <roeland@famdouma.nl>
|
||
* @author Roger Szabo <roger.szabo@web.de>
|
||
* @author root <root@localhost.localdomain>
|
||
* @author Thomas Müller <thomas.mueller@tmit.eu>
|
||
* @author Vincent Petry <pvince81@owncloud.com>
|
||
* @author Vinicius Cubas Brand <vinicius@eita.org.br>
|
||
*
|
||
* @license AGPL-3.0
|
||
*
|
||
* This code is free software: you can redistribute it and/or modify
|
||
* it under the terms of the GNU Affero General Public License, version 3,
|
||
* as published by the Free Software Foundation.
|
||
*
|
||
* This program 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, version 3,
|
||
* along with this program. If not, see <http://www.gnu.org/licenses/>
|
||
*
|
||
*/
|
||
|
||
namespace OCA\User_LDAP;
|
||
|
||
use OC\Cache\CappedMemoryCache;
|
||
use OCP\IConfig;
|
||
|
||
class Helper {
|
||
|
||
/** @var IConfig */
|
||
private $config;
|
||
|
||
/** @var CappedMemoryCache */
|
||
protected $sanitizeDnCache;
|
||
|
||
/**
|
||
* Helper constructor.
|
||
*
|
||
* @param IConfig $config
|
||
*/
|
||
public function __construct(IConfig $config) {
|
||
$this->config = $config;
|
||
$this->sanitizeDnCache = new CappedMemoryCache(10000);
|
||
}
|
||
|
||
/**
|
||
* returns prefixes for each saved LDAP/AD server configuration.
|
||
*
|
||
* @param bool $activeConfigurations optional, whether only active configuration shall be
|
||
* retrieved, defaults to false
|
||
* @return array with a list of the available prefixes
|
||
*
|
||
* Configuration prefixes are used to set up configurations for n LDAP or
|
||
* AD servers. Since configuration is stored in the database, table
|
||
* appconfig under appid user_ldap, the common identifiers in column
|
||
* 'configkey' have a prefix. The prefix for the very first server
|
||
* configuration is empty.
|
||
* Configkey Examples:
|
||
* Server 1: ldap_login_filter
|
||
* Server 2: s1_ldap_login_filter
|
||
* Server 3: s2_ldap_login_filter
|
||
*
|
||
* The prefix needs to be passed to the constructor of Connection class,
|
||
* except the default (first) server shall be connected to.
|
||
*
|
||
*/
|
||
public function getServerConfigurationPrefixes($activeConfigurations = false) {
|
||
$referenceConfigkey = 'ldap_configuration_active';
|
||
|
||
$keys = $this->getServersConfig($referenceConfigkey);
|
||
|
||
$prefixes = [];
|
||
foreach ($keys as $key) {
|
||
if ($activeConfigurations && $this->config->getAppValue('user_ldap', $key, '0') !== '1') {
|
||
continue;
|
||
}
|
||
|
||
$len = strlen($key) - strlen($referenceConfigkey);
|
||
$prefixes[] = substr($key, 0, $len);
|
||
}
|
||
asort($prefixes);
|
||
|
||
return $prefixes;
|
||
}
|
||
|
||
/**
|
||
*
|
||
* determines the host for every configured connection
|
||
*
|
||
* @return array an array with configprefix as keys
|
||
*
|
||
*/
|
||
public function getServerConfigurationHosts() {
|
||
$referenceConfigkey = 'ldap_host';
|
||
|
||
$keys = $this->getServersConfig($referenceConfigkey);
|
||
|
||
$result = [];
|
||
foreach ($keys as $key) {
|
||
$len = strlen($key) - strlen($referenceConfigkey);
|
||
$prefix = substr($key, 0, $len);
|
||
$result[$prefix] = $this->config->getAppValue('user_ldap', $key);
|
||
}
|
||
|
||
return $result;
|
||
}
|
||
|
||
/**
|
||
* return the next available configuration prefix
|
||
*
|
||
* @return string
|
||
*/
|
||
public function getNextServerConfigurationPrefix() {
|
||
$serverConnections = $this->getServerConfigurationPrefixes();
|
||
|
||
if (count($serverConnections) === 0) {
|
||
return 's01';
|
||
}
|
||
|
||
sort($serverConnections);
|
||
$lastKey = array_pop($serverConnections);
|
||
$lastNumber = (int)str_replace('s', '', $lastKey);
|
||
return 's' . str_pad($lastNumber + 1, 2, '0', STR_PAD_LEFT);
|
||
}
|
||
|
||
private function getServersConfig($value) {
|
||
$regex = '/' . $value . '$/S';
|
||
|
||
$keys = $this->config->getAppKeys('user_ldap');
|
||
$result = [];
|
||
foreach ($keys as $key) {
|
||
if (preg_match($regex, $key) === 1) {
|
||
$result[] = $key;
|
||
}
|
||
}
|
||
|
||
return $result;
|
||
}
|
||
|
||
/**
|
||
* deletes a given saved LDAP/AD server configuration.
|
||
*
|
||
* @param string $prefix the configuration prefix of the config to delete
|
||
* @return bool true on success, false otherwise
|
||
*/
|
||
public function deleteServerConfiguration($prefix) {
|
||
if (!in_array($prefix, self::getServerConfigurationPrefixes())) {
|
||
return false;
|
||
}
|
||
|
||
$saveOtherConfigurations = '';
|
||
if (empty($prefix)) {
|
||
$saveOtherConfigurations = 'AND `configkey` NOT LIKE \'s%\'';
|
||
}
|
||
|
||
$query = \OC_DB::prepare('
|
||
DELETE
|
||
FROM `*PREFIX*appconfig`
|
||
WHERE `configkey` LIKE ?
|
||
' . $saveOtherConfigurations . '
|
||
AND `appid` = \'user_ldap\'
|
||
AND `configkey` NOT IN (\'enabled\', \'installed_version\', \'types\', \'bgjUpdateGroupsLastRun\')
|
||
');
|
||
$delRows = $query->execute([$prefix . '%']);
|
||
|
||
if ($delRows === null) {
|
||
return false;
|
||
}
|
||
|
||
if ($delRows === 0) {
|
||
return false;
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/**
|
||
* checks whether there is one or more disabled LDAP configurations
|
||
*
|
||
* @return bool
|
||
* @throws \Exception
|
||
*/
|
||
public function haveDisabledConfigurations() {
|
||
$all = $this->getServerConfigurationPrefixes(false);
|
||
$active = $this->getServerConfigurationPrefixes(true);
|
||
|
||
if (!is_array($all) || !is_array($active)) {
|
||
throw new \Exception('Unexpected Return Value');
|
||
}
|
||
|
||
return count($all) !== count($active) || count($all) === 0;
|
||
}
|
||
|
||
/**
|
||
* extracts the domain from a given URL
|
||
*
|
||
* @param string $url the URL
|
||
* @return string|false domain as string on success, false otherwise
|
||
*/
|
||
public function getDomainFromURL($url) {
|
||
$uinfo = parse_url($url);
|
||
if (!is_array($uinfo)) {
|
||
return false;
|
||
}
|
||
|
||
$domain = false;
|
||
if (isset($uinfo['host'])) {
|
||
$domain = $uinfo['host'];
|
||
} elseif (isset($uinfo['path'])) {
|
||
$domain = $uinfo['path'];
|
||
}
|
||
|
||
return $domain;
|
||
}
|
||
|
||
/**
|
||
*
|
||
* Set the LDAPProvider in the config
|
||
*
|
||
*/
|
||
public function setLDAPProvider() {
|
||
$current = \OC::$server->getConfig()->getSystemValue('ldapProviderFactory', null);
|
||
if (is_null($current)) {
|
||
\OC::$server->getConfig()->setSystemValue('ldapProviderFactory', LDAPProviderFactory::class);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* sanitizes a DN received from the LDAP server
|
||
*
|
||
* @param array $dn the DN in question
|
||
* @return array|string the sanitized DN
|
||
*/
|
||
public function sanitizeDN($dn) {
|
||
//treating multiple base DNs
|
||
if (is_array($dn)) {
|
||
$result = [];
|
||
foreach ($dn as $singleDN) {
|
||
$result[] = $this->sanitizeDN($singleDN);
|
||
}
|
||
return $result;
|
||
}
|
||
|
||
if (!is_string($dn)) {
|
||
throw new \LogicException('String expected ' . \gettype($dn) . ' given');
|
||
}
|
||
|
||
if (($sanitizedDn = $this->sanitizeDnCache->get($dn)) !== null) {
|
||
return $sanitizedDn;
|
||
}
|
||
|
||
//OID sometimes gives back DNs with whitespace after the comma
|
||
// a la "uid=foo, cn=bar, dn=..." We need to tackle this!
|
||
$sanitizedDn = preg_replace('/([^\\\]),(\s+)/u', '\1,', $dn);
|
||
|
||
//make comparisons and everything work
|
||
$sanitizedDn = mb_strtolower($sanitizedDn, '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 = [
|
||
'\,' => '\5c2C',
|
||
'\=' => '\5c3D',
|
||
'\+' => '\5c2B',
|
||
'\<' => '\5c3C',
|
||
'\>' => '\5c3E',
|
||
'\;' => '\5c3B',
|
||
'\"' => '\5c22',
|
||
'\#' => '\5c23',
|
||
'(' => '\28',
|
||
')' => '\29',
|
||
'*' => '\2A',
|
||
];
|
||
$sanitizedDn = str_replace(array_keys($replacements), array_values($replacements), $sanitizedDn);
|
||
$this->sanitizeDnCache->set($dn, $sanitizedDn);
|
||
|
||
return $sanitizedDn;
|
||
}
|
||
|
||
/**
|
||
* 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 $dn the DN
|
||
* @return string
|
||
*/
|
||
public function DNasBaseParameter($dn) {
|
||
return str_ireplace('\\5c', '\\', $dn);
|
||
}
|
||
|
||
/**
|
||
* listens to a hook thrown by server2server sharing and replaces the given
|
||
* login name by a username, if it matches an LDAP user.
|
||
*
|
||
* @param array $param
|
||
* @throws \Exception
|
||
*/
|
||
public static function loginName2UserName($param) {
|
||
if (!isset($param['uid'])) {
|
||
throw new \Exception('key uid is expected to be set in $param');
|
||
}
|
||
|
||
//ain't it ironic?
|
||
$helper = new Helper(\OC::$server->getConfig());
|
||
|
||
$configPrefixes = $helper->getServerConfigurationPrefixes(true);
|
||
$ldapWrapper = new LDAP();
|
||
$ocConfig = \OC::$server->getConfig();
|
||
$notificationManager = \OC::$server->getNotificationManager();
|
||
|
||
$userSession = \OC::$server->getUserSession();
|
||
$userPluginManager = \OC::$server->query(UserPluginManager::class);
|
||
|
||
$userBackend = new User_Proxy(
|
||
$configPrefixes, $ldapWrapper, $ocConfig, $notificationManager, $userSession, $userPluginManager
|
||
);
|
||
$uid = $userBackend->loginName2UserName($param['uid']);
|
||
if ($uid !== false) {
|
||
$param['uid'] = $uid;
|
||
}
|
||
}
|
||
}
|