732 lines
24 KiB
PHP
732 lines
24 KiB
PHP
<?php
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/**
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* ownCloud – LDAP Connection
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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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class Connection extends LDAPUtility {
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private $ldapConnectionRes = null;
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private $configPrefix;
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private $configID;
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private $configured = false;
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//whether connection should be kept on __destruct
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private $dontDestruct = false;
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//cache handler
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protected $cache;
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//settings
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protected $config = array(
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'ldapHost' => null,
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'ldapPort' => null,
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'ldapBackupHost' => null,
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'ldapBackupPort' => null,
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'ldapBase' => null,
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'ldapBaseUsers' => null,
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'ldapBaseGroups' => null,
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'ldapAgentName' => null,
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'ldapAgentPassword' => null,
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'ldapTLS' => null,
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'ldapNoCase' => null,
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'turnOffCertCheck' => null,
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'ldapIgnoreNamingRules' => null,
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'ldapUserDisplayName' => null,
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'ldapUserFilter' => null,
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'ldapGroupFilter' => null,
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'ldapGroupDisplayName' => null,
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'ldapGroupMemberAssocAttr' => null,
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'ldapLoginFilter' => null,
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'ldapQuotaAttribute' => null,
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'ldapQuotaDefault' => null,
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'ldapEmailAttribute' => null,
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'ldapCacheTTL' => null,
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'ldapUuidUserAttribute' => 'auto',
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'ldapUuidGroupAttribute' => 'auto',
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'ldapOverrideUuidAttribute' => null,
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'ldapOverrideMainServer' => false,
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'ldapConfigurationActive' => false,
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'ldapAttributesForUserSearch' => null,
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'ldapAttributesForGroupSearch' => null,
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'homeFolderNamingRule' => null,
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'hasPagedResultSupport' => false,
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'ldapExpertUsernameAttr' => null,
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'ldapExpertUUIDUserAttr' => null,
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'ldapExpertUUIDGroupAttr' => null,
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);
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/**
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* @brief Constructor
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* @param $configPrefix a string with the prefix for the configkey column (appconfig table)
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* @param $configID a string with the value for the appid column (appconfig table) or null for on-the-fly connections
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*/
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public function __construct(ILDAPWrapper $ldap, $configPrefix = '', $configID = 'user_ldap') {
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parent::__construct($ldap);
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$this->configPrefix = $configPrefix;
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$this->configID = $configID;
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$memcache = new \OC\Memcache\Factory();
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if($memcache->isAvailable()) {
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$this->cache = $memcache->create();
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} else {
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$this->cache = \OC_Cache::getGlobalCache();
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}
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$this->config['hasPagedResultSupport'] =
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$this->ldap->hasPagedResultSupport();
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}
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public function __destruct() {
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if(!$this->dontDestruct &&
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$this->ldap->isResource($this->ldapConnectionRes)) {
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@$this->ldap->unbind($this->ldapConnectionRes);
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};
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}
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/**
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* @brief defines behaviour when the instance is cloned
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*/
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public function __clone() {
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//a cloned instance inherits the connection resource. It may use it,
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//but it may not disconnect it
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$this->dontDestruct = true;
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}
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public function __get($name) {
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if(!$this->configured) {
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$this->readConfiguration();
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}
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if(isset($this->config[$name])) {
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return $this->config[$name];
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}
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}
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public function __set($name, $value) {
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$changed = false;
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//only few options are writable
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if($name === 'ldapUuidUserAttribute' || $name === 'ldapUuidGroupAttribute') {
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\OCP\Util::writeLog('user_ldap', 'Set config '.$name.' to '.$value, \OCP\Util::DEBUG);
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$this->config[$name] = $value;
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if(!empty($this->configID)) {
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\OCP\Config::setAppValue($this->configID, $this->configPrefix.$name, $value);
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}
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$changed = true;
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}
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if($changed) {
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$this->validateConfiguration();
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}
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}
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/**
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* @brief initializes the LDAP backend
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* @param $force read the config settings no matter what
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*
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* initializes the LDAP backend
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*/
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public function init($force = false) {
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$this->readConfiguration($force);
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$this->establishConnection();
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}
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/**
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* Returns the LDAP handler
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*/
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public function getConnectionResource() {
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if(!$this->ldapConnectionRes) {
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$this->init();
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} else if(!$this->ldap->isResource($this->ldapConnectionRes)) {
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$this->ldapConnectionRes = null;
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$this->establishConnection();
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}
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if(is_null($this->ldapConnectionRes)) {
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\OCP\Util::writeLog('user_ldap', 'Connection could not be established', \OCP\Util::ERROR);
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}
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return $this->ldapConnectionRes;
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}
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private function getCacheKey($key) {
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$prefix = 'LDAP-'.$this->configID.'-'.$this->configPrefix.'-';
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if(is_null($key)) {
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return $prefix;
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}
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return $prefix.md5($key);
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}
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public function getFromCache($key) {
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if(!$this->configured) {
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$this->readConfiguration();
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}
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if(!$this->config['ldapCacheTTL']) {
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return null;
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}
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if(!$this->isCached($key)) {
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return null;
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}
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$key = $this->getCacheKey($key);
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return unserialize(base64_decode($this->cache->get($key)));
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}
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public function isCached($key) {
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if(!$this->configured) {
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$this->readConfiguration();
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}
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if(!$this->config['ldapCacheTTL']) {
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return false;
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}
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$key = $this->getCacheKey($key);
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return $this->cache->hasKey($key);
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}
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public function writeToCache($key, $value) {
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if(!$this->configured) {
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$this->readConfiguration();
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}
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if(!$this->config['ldapCacheTTL']
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|| !$this->config['ldapConfigurationActive']) {
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return null;
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}
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$key = $this->getCacheKey($key);
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$value = base64_encode(serialize($value));
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$this->cache->set($key, $value, $this->config['ldapCacheTTL']);
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}
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public function clearCache() {
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$this->cache->clear($this->getCacheKey(null));
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}
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private function getValue($varname) {
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static $defaults;
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if(is_null($defaults)) {
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$defaults = $this->getDefaults();
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}
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return \OCP\Config::getAppValue($this->configID,
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$this->configPrefix.$varname,
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$defaults[$varname]);
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}
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private function setValue($varname, $value) {
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\OCP\Config::setAppValue($this->configID,
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$this->configPrefix.$varname,
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$value);
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}
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/**
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* Special handling for reading Base Configuration
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*
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* @param $base the internal name of the config key
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* @param $value the value stored for the base
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*/
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private function readBase($base, $value) {
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if(empty($value)) {
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$value = '';
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} else {
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$value = preg_split('/\r\n|\r|\n/', $value);
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}
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$this->config[$base] = $value;
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}
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/**
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* Caches the general LDAP configuration.
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*/
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private function readConfiguration($force = false) {
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if((!$this->configured || $force) && !is_null($this->configID)) {
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$v = 'getValue';
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$this->config['ldapHost'] = $this->$v('ldap_host');
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$this->config['ldapBackupHost'] = $this->$v('ldap_backup_host');
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$this->config['ldapPort'] = $this->$v('ldap_port');
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$this->config['ldapBackupPort'] = $this->$v('ldap_backup_port');
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$this->config['ldapOverrideMainServer']
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= $this->$v('ldap_override_main_server');
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$this->config['ldapAgentName'] = $this->$v('ldap_dn');
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$this->config['ldapAgentPassword']
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= base64_decode($this->$v('ldap_agent_password'));
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$this->readBase('ldapBase', $this->$v('ldap_base'));
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$this->readBase('ldapBaseUsers', $this->$v('ldap_base_users'));
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$this->readBase('ldapBaseGroups', $this->$v('ldap_base_groups'));
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$this->config['ldapTLS'] = $this->$v('ldap_tls');
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$this->config['ldapNoCase'] = $this->$v('ldap_nocase');
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$this->config['turnOffCertCheck']
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= $this->$v('ldap_turn_off_cert_check');
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$this->config['ldapUserDisplayName']
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= mb_strtolower($this->$v('ldap_display_name'), 'UTF-8');
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$this->config['ldapUserFilter']
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= $this->$v('ldap_userlist_filter');
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$this->config['ldapGroupFilter'] = $this->$v('ldap_group_filter');
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$this->config['ldapLoginFilter'] = $this->$v('ldap_login_filter');
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$this->config['ldapGroupDisplayName']
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= mb_strtolower($this->$v('ldap_group_display_name'), 'UTF-8');
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$this->config['ldapQuotaAttribute']
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= $this->$v('ldap_quota_attr');
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$this->config['ldapQuotaDefault']
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= $this->$v('ldap_quota_def');
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$this->config['ldapEmailAttribute']
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= $this->$v('ldap_email_attr');
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$this->config['ldapGroupMemberAssocAttr']
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= $this->$v('ldap_group_member_assoc_attribute');
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$this->config['ldapIgnoreNamingRules']
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= \OCP\Config::getSystemValue('ldapIgnoreNamingRules', false);
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$this->config['ldapCacheTTL'] = $this->$v('ldap_cache_ttl');
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$this->config['ldapUuidUserAttribute']
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= $this->$v('ldap_uuid_user_attribute');
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$this->config['ldapUuidGroupAttribute']
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= $this->$v('ldap_uuid_group_attribute');
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$this->config['ldapOverrideUuidAttribute']
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= $this->$v('ldap_override_uuid_attribute');
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$this->config['homeFolderNamingRule']
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= $this->$v('home_folder_naming_rule');
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$this->config['ldapConfigurationActive']
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= $this->$v('ldap_configuration_active');
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$this->config['ldapAttributesForUserSearch']
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= preg_split('/\r\n|\r|\n/', $this->$v('ldap_attributes_for_user_search'));
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$this->config['ldapAttributesForGroupSearch']
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= preg_split('/\r\n|\r|\n/', $this->$v('ldap_attributes_for_group_search'));
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$this->config['ldapExpertUsernameAttr']
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= $this->$v('ldap_expert_username_attr');
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$this->config['ldapExpertUUIDUserAttr']
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= $this->$v('ldap_expert_uuid_user_attr');
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$this->config['ldapExpertUUIDGroupAttr']
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= $this->$v('ldap_expert_uuid_group_attr');
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$this->configured = $this->validateConfiguration();
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}
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}
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/**
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* @return returns an array that maps internal variable names to database fields
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*/
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private function getConfigTranslationArray() {
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static $array = array(
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'ldap_host'=>'ldapHost',
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'ldap_port'=>'ldapPort',
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'ldap_backup_host'=>'ldapBackupHost',
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'ldap_backup_port'=>'ldapBackupPort',
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'ldap_override_main_server' => 'ldapOverrideMainServer',
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'ldap_dn'=>'ldapAgentName',
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'ldap_agent_password'=>'ldapAgentPassword',
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'ldap_base'=>'ldapBase',
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'ldap_base_users'=>'ldapBaseUsers',
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'ldap_base_groups'=>'ldapBaseGroups',
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'ldap_userlist_filter'=>'ldapUserFilter',
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'ldap_login_filter'=>'ldapLoginFilter',
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'ldap_group_filter'=>'ldapGroupFilter',
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'ldap_display_name'=>'ldapUserDisplayName',
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'ldap_group_display_name'=>'ldapGroupDisplayName',
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'ldap_tls'=>'ldapTLS',
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'ldap_nocase'=>'ldapNoCase',
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'ldap_quota_def'=>'ldapQuotaDefault',
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'ldap_quota_attr'=>'ldapQuotaAttribute',
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'ldap_email_attr'=>'ldapEmailAttribute',
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'ldap_group_member_assoc_attribute'=>'ldapGroupMemberAssocAttr',
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'ldap_cache_ttl'=>'ldapCacheTTL',
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'home_folder_naming_rule' => 'homeFolderNamingRule',
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'ldap_turn_off_cert_check' => 'turnOffCertCheck',
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'ldap_configuration_active' => 'ldapConfigurationActive',
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'ldap_attributes_for_user_search' => 'ldapAttributesForUserSearch',
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'ldap_attributes_for_group_search' => 'ldapAttributesForGroupSearch',
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'ldap_expert_username_attr' => 'ldapExpertUsernameAttr',
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'ldap_expert_uuid_user_attr' => 'ldapExpertUUIDUserAttr',
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'ldap_expert_uuid_group_attr' => 'ldapExpertUUIDGroupAttr',
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);
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return $array;
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}
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/**
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* @brief set LDAP configuration with values delivered by an array, not read from configuration
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* @param $config array that holds the config parameters in an associated array
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* @param &$setParameters optional; array where the set fields will be given to
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* @return true if config validates, false otherwise. Check with $setParameters for detailed success on single parameters
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*/
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public function setConfiguration($config, &$setParameters = null) {
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if(!is_array($config)) {
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return false;
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}
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$params = $this->getConfigTranslationArray();
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foreach($config as $parameter => $value) {
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if(($parameter === 'homeFolderNamingRule'
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|| (isset($params[$parameter])
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&& $params[$parameter] === 'homeFolderNamingRule'))
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&& !empty($value)) {
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$value = 'attr:'.$value;
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} else if (strpos($parameter, 'ldapBase') !== false
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|| (isset($params[$parameter])
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&& strpos($params[$parameter], 'ldapBase') !== false)) {
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$this->readBase($params[$parameter], $value);
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if(is_array($setParameters)) {
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$setParameters[] = $parameter;
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}
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continue;
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}
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if(isset($this->config[$parameter])) {
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$this->config[$parameter] = $value;
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if(is_array($setParameters)) {
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$setParameters[] = $parameter;
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}
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} else if(isset($params[$parameter])) {
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$this->config[$params[$parameter]] = $value;
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if(is_array($setParameters)) {
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$setParameters[] = $params[$parameter];
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}
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}
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}
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$this->configured = $this->validateConfiguration();
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return $this->configured;
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}
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/**
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* @brief saves the current Configuration in the database
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*/
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public function saveConfiguration() {
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$trans = array_flip($this->getConfigTranslationArray());
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foreach($this->config as $key => $value) {
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\OCP\Util::writeLog('user_ldap', 'LDAP: storing key '.$key.
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' value '.print_r($value, true), \OCP\Util::DEBUG);
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switch ($key) {
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case 'ldapAgentPassword':
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$value = base64_encode($value);
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break;
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case 'ldapBase':
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case 'ldapBaseUsers':
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case 'ldapBaseGroups':
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case 'ldapAttributesForUserSearch':
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case 'ldapAttributesForGroupSearch':
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if(is_array($value)) {
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$value = implode("\n", $value);
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}
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break;
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case 'ldapIgnoreNamingRules':
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case 'ldapOverrideUuidAttribute':
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case 'ldapUuidUserAttribute':
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case 'ldapUuidGroupAttribute':
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case 'hasPagedResultSupport':
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continue 2;
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}
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if(is_null($value)) {
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$value = '';
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}
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$this->setValue($trans[$key], $value);
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}
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$this->clearCache();
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}
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/**
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* @brief get the current LDAP configuration
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* @return array
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*/
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public function getConfiguration() {
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$this->readConfiguration();
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$trans = $this->getConfigTranslationArray();
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$config = array();
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foreach($trans as $dbKey => $classKey) {
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if($classKey === 'homeFolderNamingRule') {
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if(strpos($this->config[$classKey], 'attr:') === 0) {
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$config[$dbKey] = substr($this->config[$classKey], 5);
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} else {
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$config[$dbKey] = '';
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}
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continue;
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} else if((strpos($classKey, 'ldapBase') !== false
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|| strpos($classKey, 'ldapAttributes') !== false)
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&& is_array($this->config[$classKey])) {
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$config[$dbKey] = implode("\n", $this->config[$classKey]);
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continue;
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}
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$config[$dbKey] = $this->config[$classKey];
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}
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return $config;
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}
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/**
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* @brief Validates the user specified configuration
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* @returns true if configuration seems OK, false otherwise
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*/
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private function validateConfiguration() {
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// first step: "soft" checks: settings that are not really
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// necessary, but advisable. If left empty, give an info message
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if(empty($this->config['ldapBaseUsers'])) {
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\OCP\Util::writeLog('user_ldap', 'Base tree for Users is empty, using Base DN', \OCP\Util::INFO);
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$this->config['ldapBaseUsers'] = $this->config['ldapBase'];
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}
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if(empty($this->config['ldapBaseGroups'])) {
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\OCP\Util::writeLog('user_ldap', 'Base tree for Groups is empty, using Base DN', \OCP\Util::INFO);
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$this->config['ldapBaseGroups'] = $this->config['ldapBase'];
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}
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if(empty($this->config['ldapGroupFilter']) && empty($this->config['ldapGroupMemberAssocAttr'])) {
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\OCP\Util::writeLog('user_ldap',
|
||
'No group filter is specified, LDAP group feature will not be used.',
|
||
\OCP\Util::INFO);
|
||
}
|
||
$uuidAttributes = array(
|
||
'auto', 'entryuuid', 'nsuniqueid', 'objectguid', 'guid');
|
||
$uuidSettings = array(
|
||
'ldapUuidUserAttribute' => 'ldapExpertUUIDUserAttr',
|
||
'ldapUuidGroupAttribute' => 'ldapExpertUUIDGroupAttr');
|
||
$cta = array_flip($this->getConfigTranslationArray());
|
||
foreach($uuidSettings as $defaultKey => $overrideKey) {
|
||
if( !in_array($this->config[$defaultKey], $uuidAttributes)
|
||
&& is_null($this->config[$overrideKey])
|
||
&& !is_null($this->configID)) {
|
||
\OCP\Config::setAppValue($this->configID,
|
||
$this->configPrefix.$cta[$defaultKey],
|
||
'auto');
|
||
\OCP\Util::writeLog('user_ldap',
|
||
'Illegal value for'.$defaultKey.', reset to autodetect.',
|
||
\OCP\Util::DEBUG);
|
||
}
|
||
}
|
||
|
||
if(empty($this->config['ldapBackupPort'])) {
|
||
//force default
|
||
$this->config['ldapBackupPort'] = $this->config['ldapPort'];
|
||
}
|
||
foreach(array('ldapAttributesForUserSearch', 'ldapAttributesForGroupSearch') as $key) {
|
||
if(is_array($this->config[$key])
|
||
&& count($this->config[$key]) === 1
|
||
&& empty($this->config[$key][0])) {
|
||
$this->config[$key] = array();
|
||
}
|
||
}
|
||
if((strpos($this->config['ldapHost'], 'ldaps') === 0)
|
||
&& $this->config['ldapTLS']) {
|
||
$this->config['ldapTLS'] = false;
|
||
\OCP\Util::writeLog('user_ldap',
|
||
'LDAPS (already using secure connection) and TLS do not work together. Switched off TLS.',
|
||
\OCP\Util::INFO);
|
||
}
|
||
|
||
//second step: critical checks. If left empty or filled wrong, set as unconfigured and give a warning.
|
||
$configurationOK = true;
|
||
if(empty($this->config['ldapHost'])) {
|
||
\OCP\Util::writeLog('user_ldap', 'No LDAP host given, won`t connect.', \OCP\Util::WARN);
|
||
$configurationOK = false;
|
||
}
|
||
if(empty($this->config['ldapPort'])) {
|
||
\OCP\Util::writeLog('user_ldap', 'No LDAP Port given, won`t connect.', \OCP\Util::WARN);
|
||
$configurationOK = false;
|
||
}
|
||
if((empty($this->config['ldapAgentName']) && !empty($this->config['ldapAgentPassword']))
|
||
|| (!empty($this->config['ldapAgentName']) && empty($this->config['ldapAgentPassword']))) {
|
||
\OCP\Util::writeLog('user_ldap',
|
||
'Either no password given for the user agent or a password is given, but no LDAP agent; won`t connect.',
|
||
\OCP\Util::WARN);
|
||
$configurationOK = false;
|
||
}
|
||
//TODO: check if ldapAgentName is in DN form
|
||
if(empty($this->config['ldapBase'])
|
||
&& (empty($this->config['ldapBaseUsers'])
|
||
&& empty($this->config['ldapBaseGroups']))) {
|
||
\OCP\Util::writeLog('user_ldap', 'No Base DN given, won`t connect.', \OCP\Util::WARN);
|
||
$configurationOK = false;
|
||
}
|
||
if(empty($this->config['ldapUserDisplayName'])) {
|
||
\OCP\Util::writeLog('user_ldap',
|
||
'No user display name attribute specified, won`t connect.',
|
||
\OCP\Util::WARN);
|
||
$configurationOK = false;
|
||
}
|
||
if(empty($this->config['ldapGroupDisplayName'])) {
|
||
\OCP\Util::writeLog('user_ldap',
|
||
'No group display name attribute specified, won`t connect.',
|
||
\OCP\Util::WARN);
|
||
$configurationOK = false;
|
||
}
|
||
if(empty($this->config['ldapLoginFilter'])) {
|
||
\OCP\Util::writeLog('user_ldap', 'No login filter specified, won`t connect.', \OCP\Util::WARN);
|
||
$configurationOK = false;
|
||
}
|
||
if(mb_strpos($this->config['ldapLoginFilter'], '%uid', 0, 'UTF-8') === false) {
|
||
\OCP\Util::writeLog('user_ldap',
|
||
'Login filter does not contain %uid place holder, won`t connect.',
|
||
\OCP\Util::WARN);
|
||
\OCP\Util::writeLog('user_ldap', 'Login filter was ' . $this->config['ldapLoginFilter'], \OCP\Util::DEBUG);
|
||
$configurationOK = false;
|
||
}
|
||
|
||
if(!empty($this->config['ldapExpertUUIDUserAttr'])) {
|
||
$this->config['ldapUuidUserAttribute'] = $this->config['ldapExpertUUIDUserAttr'];
|
||
}
|
||
if(!empty($this->config['ldapExpertUUIDGroupAttr'])) {
|
||
$this->config['ldapUuidGroupAttribute'] = $this->config['ldapExpertUUIDGroupAttr'];
|
||
}
|
||
|
||
return $configurationOK;
|
||
}
|
||
|
||
/**
|
||
* @returns an associative array with the default values. Keys are correspond
|
||
* to config-value entries in the database table
|
||
*/
|
||
static public function getDefaults() {
|
||
return array(
|
||
'ldap_host' => '',
|
||
'ldap_port' => '389',
|
||
'ldap_backup_host' => '',
|
||
'ldap_backup_port' => '',
|
||
'ldap_override_main_server' => '',
|
||
'ldap_dn' => '',
|
||
'ldap_agent_password' => '',
|
||
'ldap_base' => '',
|
||
'ldap_base_users' => '',
|
||
'ldap_base_groups' => '',
|
||
'ldap_userlist_filter' => 'objectClass=person',
|
||
'ldap_login_filter' => 'uid=%uid',
|
||
'ldap_group_filter' => 'objectClass=posixGroup',
|
||
'ldap_display_name' => 'cn',
|
||
'ldap_group_display_name' => 'cn',
|
||
'ldap_tls' => 1,
|
||
'ldap_nocase' => 0,
|
||
'ldap_quota_def' => '',
|
||
'ldap_quota_attr' => '',
|
||
'ldap_email_attr' => '',
|
||
'ldap_group_member_assoc_attribute' => 'uniqueMember',
|
||
'ldap_cache_ttl' => 600,
|
||
'ldap_uuid_user_attribute' => 'auto',
|
||
'ldap_uuid_group_attribute' => 'auto',
|
||
'ldap_override_uuid_attribute' => 0,
|
||
'home_folder_naming_rule' => '',
|
||
'ldap_turn_off_cert_check' => 0,
|
||
'ldap_configuration_active' => 1,
|
||
'ldap_attributes_for_user_search' => '',
|
||
'ldap_attributes_for_group_search' => '',
|
||
'ldap_expert_username_attr' => '',
|
||
'ldap_expert_uuid_user_attr' => '',
|
||
'ldap_expert_uuid_group_attr' => '',
|
||
);
|
||
}
|
||
|
||
/**
|
||
* Connects and Binds to LDAP
|
||
*/
|
||
private function establishConnection() {
|
||
if(!$this->config['ldapConfigurationActive']) {
|
||
return null;
|
||
}
|
||
static $phpLDAPinstalled = true;
|
||
if(!$phpLDAPinstalled) {
|
||
return false;
|
||
}
|
||
if(!$this->configured) {
|
||
\OCP\Util::writeLog('user_ldap', 'Configuration is invalid, cannot connect', \OCP\Util::WARN);
|
||
return false;
|
||
}
|
||
if(!$this->ldapConnectionRes) {
|
||
if(!$this->ldap->areLDAPFunctionsAvailable()) {
|
||
$phpLDAPinstalled = false;
|
||
\OCP\Util::writeLog('user_ldap',
|
||
'function ldap_connect is not available. Make sure that the PHP ldap module is installed.',
|
||
\OCP\Util::ERROR);
|
||
|
||
return false;
|
||
}
|
||
if($this->config['turnOffCertCheck']) {
|
||
if(putenv('LDAPTLS_REQCERT=never')) {
|
||
\OCP\Util::writeLog('user_ldap',
|
||
'Turned off SSL certificate validation successfully.',
|
||
\OCP\Util::WARN);
|
||
} else {
|
||
\OCP\Util::writeLog('user_ldap', 'Could not turn off SSL certificate validation.', \OCP\Util::WARN);
|
||
}
|
||
}
|
||
if(!$this->config['ldapOverrideMainServer'] && !$this->getFromCache('overrideMainServer')) {
|
||
$this->doConnect($this->config['ldapHost'], $this->config['ldapPort']);
|
||
$bindStatus = $this->bind();
|
||
$error = $this->ldap->isResource($this->ldapConnectionRes) ?
|
||
$this->ldap->errno($this->ldapConnectionRes) : -1;
|
||
} else {
|
||
$bindStatus = false;
|
||
$error = null;
|
||
}
|
||
|
||
//if LDAP server is not reachable, try the Backup (Replica!) Server
|
||
if((!$bindStatus && ($error !== 0))
|
||
|| $this->config['ldapOverrideMainServer']
|
||
|| $this->getFromCache('overrideMainServer')) {
|
||
$this->doConnect($this->config['ldapBackupHost'], $this->config['ldapBackupPort']);
|
||
$bindStatus = $this->bind();
|
||
if(!$bindStatus && $error === -1) {
|
||
//when bind to backup server succeeded and failed to main server,
|
||
//skip contacting him until next cache refresh
|
||
$this->writeToCache('overrideMainServer', true);
|
||
}
|
||
}
|
||
return $bindStatus;
|
||
}
|
||
}
|
||
|
||
private function doConnect($host, $port) {
|
||
if(empty($host)) {
|
||
return false;
|
||
}
|
||
if(strpos($host, '://') !== false) {
|
||
//ldap_connect ignores port paramater when URLs are passed
|
||
$host .= ':' . $port;
|
||
}
|
||
$this->ldapConnectionRes = $this->ldap->connect($host, $port);
|
||
if($this->ldap->setOption($this->ldapConnectionRes, LDAP_OPT_PROTOCOL_VERSION, 3)) {
|
||
if($this->ldap->setOption($this->ldapConnectionRes, LDAP_OPT_REFERRALS, 0)) {
|
||
if($this->config['ldapTLS']) {
|
||
$this->ldap->startTls($this->ldapConnectionRes);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Binds to LDAP
|
||
*/
|
||
public function bind() {
|
||
static $getConnectionResourceAttempt = false;
|
||
if(!$this->config['ldapConfigurationActive']) {
|
||
return false;
|
||
}
|
||
if($getConnectionResourceAttempt) {
|
||
$getConnectionResourceAttempt = false;
|
||
return false;
|
||
}
|
||
$getConnectionResourceAttempt = true;
|
||
$cr = $this->getConnectionResource();
|
||
$getConnectionResourceAttempt = false;
|
||
if(!$this->ldap->isResource($cr)) {
|
||
return false;
|
||
}
|
||
$ldapLogin = @$this->ldap->bind($cr,
|
||
$this->config['ldapAgentName'],
|
||
$this->config['ldapAgentPassword']);
|
||
if(!$ldapLogin) {
|
||
\OCP\Util::writeLog('user_ldap',
|
||
'Bind failed: ' . $this->ldap->errno($cr) . ': ' . $this->ldap->error($cr),
|
||
\OCP\Util::ERROR);
|
||
$this->ldapConnectionRes = null;
|
||
return false;
|
||
}
|
||
return true;
|
||
}
|
||
|
||
}
|