diff options
Diffstat (limited to 'apps/user_ldap/lib/Connection.php')
-rw-r--r-- | apps/user_ldap/lib/Connection.php | 681 |
1 files changed, 411 insertions, 270 deletions
diff --git a/apps/user_ldap/lib/Connection.php b/apps/user_ldap/lib/Connection.php index c73a35e6bf1..336179ac341 100644 --- a/apps/user_ldap/lib/Connection.php +++ b/apps/user_ldap/lib/Connection.php @@ -1,70 +1,106 @@ <?php + /** - * @copyright Copyright (c) 2016, ownCloud, Inc. - * - * @author Arthur Schiwon <blizzz@arthur-schiwon.de> - * @author Bart Visscher <bartv@thisnet.nl> - * @author Brent Bloxam <brent.bloxam@gmail.com> - * @author Jarkko Lehtoranta <devel@jlranta.com> - * @author Joas Schilling <coding@schilljs.com> - * @author Jörn Friedrich Dreyer <jfd@butonic.de> - * @author Lukas Reschke <lukas@statuscode.ch> - * @author Lyonel Vincent <lyonel@ezix.org> - * @author Morris Jobke <hey@morrisjobke.de> - * @author Robin Appelman <robin@icewind.nl> - * @author Robin McCorkell <robin@mccorkell.me.uk> - * @author Roeland Jago Douma <roeland@famdouma.nl> - * @author root <root@localhost.localdomain> - * @author Victor Dubiniuk <dubiniuk@owncloud.com> - * @author Xuanwo <xuanwo@yunify.com> - * - * @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/> - * + * SPDX-FileCopyrightText: 2016-2024 Nextcloud GmbH and Nextcloud contributors + * SPDX-FileCopyrightText: 2016 ownCloud, Inc. + * SPDX-License-Identifier: AGPL-3.0-only */ - namespace OCA\User_LDAP; use OC\ServerNotAvailableException; +use OCA\User_LDAP\Exceptions\ConfigurationIssueException; +use OCP\ICache; +use OCP\ICacheFactory; +use OCP\IL10N; +use OCP\Server; +use OCP\Util; +use Psr\Log\LoggerInterface; /** - * magic properties (incomplete) + * magic properties * responsible for LDAP connections in context with the provided configuration * - * @property string ldapHost - * @property string ldapPort holds the port number - * @property string ldapUserFilter - * @property string ldapUserDisplayName - * @property string ldapUserDisplayName2 - * @property boolean turnOnPasswordChange - * @property boolean hasPagedResultSupport - * @property string[] ldapBaseUsers - * @property int|null ldapPagingSize holds an integer - * @property bool|mixed|void ldapGroupMemberAssocAttr - * @property string ldapUuidUserAttribute - * @property string ldapUuidGroupAttribute - * @property string ldapExpertUUIDUserAttr - * @property string ldapExpertUUIDGroupAttr + * @property string $ldapHost + * @property string $ldapPort + * @property string $ldapBackupHost + * @property string $ldapBackupPort + * @property string $ldapBackgroundHost + * @property string $ldapBackgroundPort + * @property array|'' $ldapBase + * @property array|'' $ldapBaseUsers + * @property array|'' $ldapBaseGroups + * @property string $ldapAgentName + * @property string $ldapAgentPassword + * @property string $ldapTLS + * @property string $turnOffCertCheck + * @property string $ldapIgnoreNamingRules + * @property string $ldapUserDisplayName + * @property string $ldapUserDisplayName2 + * @property string $ldapUserAvatarRule + * @property string $ldapGidNumber + * @property array|'' $ldapUserFilterObjectclass + * @property array|'' $ldapUserFilterGroups + * @property string $ldapUserFilter + * @property string $ldapUserFilterMode + * @property string $ldapGroupFilter + * @property string $ldapGroupFilterMode + * @property array|'' $ldapGroupFilterObjectclass + * @property array|'' $ldapGroupFilterGroups + * @property string $ldapGroupDisplayName + * @property string $ldapGroupMemberAssocAttr + * @property string $ldapLoginFilter + * @property string $ldapLoginFilterMode + * @property string $ldapLoginFilterEmail + * @property string $ldapLoginFilterUsername + * @property array|'' $ldapLoginFilterAttributes + * @property string $ldapQuotaAttribute + * @property string $ldapQuotaDefault + * @property string $ldapEmailAttribute + * @property string $ldapCacheTTL + * @property string $ldapUuidUserAttribute + * @property string $ldapUuidGroupAttribute + * @property string $ldapOverrideMainServer + * @property string $ldapConfigurationActive + * @property array|'' $ldapAttributesForUserSearch + * @property array|'' $ldapAttributesForGroupSearch + * @property string $ldapExperiencedAdmin + * @property string $homeFolderNamingRule + * @property string $hasMemberOfFilterSupport + * @property string $useMemberOfToDetectMembership + * @property string $ldapExpertUsernameAttr + * @property string $ldapExpertUUIDUserAttr + * @property string $ldapExpertUUIDGroupAttr + * @property string $markRemnantsAsDisabled + * @property string $lastJpegPhotoLookup + * @property string $ldapNestedGroups + * @property string $ldapPagingSize + * @property string $turnOnPasswordChange + * @property string $ldapDynamicGroupMemberURL + * @property string $ldapDefaultPPolicyDN + * @property string $ldapExtStorageHomeAttribute + * @property string $ldapMatchingRuleInChainState + * @property string $ldapConnectionTimeout + * @property string $ldapAttributePhone + * @property string $ldapAttributeWebsite + * @property string $ldapAttributeAddress + * @property string $ldapAttributeTwitter + * @property string $ldapAttributeFediverse + * @property string $ldapAttributeOrganisation + * @property string $ldapAttributeRole + * @property string $ldapAttributeHeadline + * @property string $ldapAttributeBiography + * @property string $ldapAdminGroup + * @property string $ldapAttributeBirthDate + * @property string $ldapAttributePronouns */ class Connection extends LDAPUtility { - private $ldapConnectionRes = null; - private $configPrefix; - private $configID; - private $configured = false; - private $hasPagedResultSupport = true; - //whether connection should be kept on __destruct - private $dontDestruct = false; + private ?\LDAP\Connection $ldapConnectionRes = null; + private bool $configured = false; + + /** + * @var bool whether connection should be kept on __destruct + */ + private bool $dontDestruct = false; /** * @var bool runtime flag that indicates whether supported primary groups are available @@ -76,44 +112,60 @@ class Connection extends LDAPUtility { */ public $hasGidNumber = true; - //cache handler - protected $cache; + /** + * @var ICache|null + */ + protected $cache = null; - /** @var Configuration settings handler **/ + /** @var Configuration settings handler * */ protected $configuration; + /** + * @var bool + */ protected $doNotValidate = false; + /** + * @var bool + */ protected $ignoreValidation = false; /** + * @var array{sum?: string, result?: bool} + */ + protected $bindResult = []; + + protected LoggerInterface $logger; + private IL10N $l10n; + + /** * Constructor - * @param ILDAPWrapper $ldap * @param string $configPrefix a string with the prefix for the configkey column (appconfig table) * @param string|null $configID a string with the value for the appid column (appconfig table) or null for on-the-fly connections */ - public function __construct(ILDAPWrapper $ldap, $configPrefix = '', $configID = 'user_ldap') { + public function __construct( + ILDAPWrapper $ldap, + private string $configPrefix = '', + private ?string $configID = 'user_ldap', + ) { parent::__construct($ldap); - $this->configPrefix = $configPrefix; - $this->configID = $configID; - $this->configuration = new Configuration($configPrefix, - !is_null($configID)); - $memcache = \OC::$server->getMemCacheFactory(); - if($memcache->isAvailable()) { + $this->configuration = new Configuration($this->configPrefix, !is_null($this->configID)); + $memcache = Server::get(ICacheFactory::class); + if ($memcache->isAvailable()) { $this->cache = $memcache->createDistributed(); } - $helper = new Helper(\OC::$server->getConfig()); + $helper = Server::get(Helper::class); $this->doNotValidate = !in_array($this->configPrefix, $helper->getServerConfigurationPrefixes()); - $this->hasPagedResultSupport = - intval($this->configuration->ldapPagingSize) !== 0 - || $this->ldap->hasPagedResultSupport(); + $this->logger = Server::get(LoggerInterface::class); + $this->l10n = Util::getL10N('user_ldap'); } public function __destruct() { - if(!$this->dontDestruct && $this->ldap->isResource($this->ldapConnectionRes)) { + if (!$this->dontDestruct && $this->ldap->isResource($this->ldapConnectionRes)) { @$this->ldap->unbind($this->ldapConnectionRes); - }; + $this->bindResult = []; + } } /** @@ -121,24 +173,19 @@ class Connection extends LDAPUtility { */ public function __clone() { $this->configuration = new Configuration($this->configPrefix, - !is_null($this->configID)); + !is_null($this->configID)); + if (count($this->bindResult) !== 0 && $this->bindResult['result'] === true) { + $this->bindResult = []; + } $this->ldapConnectionRes = null; $this->dontDestruct = true; } - /** - * @param string $name - * @return bool|mixed - */ - public function __get($name) { - if(!$this->configured) { + public function __get(string $name) { + if (!$this->configured) { $this->readConfiguration(); } - if($name === 'hasPagedResultSupport') { - return $this->hasPagedResultSupport; - } - return $this->configuration->$name; } @@ -151,7 +198,7 @@ class Connection extends LDAPUtility { $before = $this->configuration->$name; $this->configuration->$name = $value; $after = $this->configuration->$name; - if($before !== $after) { + if ($before !== $after) { if ($this->configID !== '' && $this->configID !== null) { $this->configuration->saveConfiguration(); } @@ -160,6 +207,15 @@ class Connection extends LDAPUtility { } /** + * @param string $rule + * @return array + * @throws \RuntimeException + */ + public function resolveRule($rule) { + return $this->configuration->resolveRule($rule); + } + + /** * sets whether the result of the configuration validation shall * be ignored when establishing the connection. Used by the Wizard * in early configuration state. @@ -179,17 +235,17 @@ class Connection extends LDAPUtility { } /** - * Returns the LDAP handler + * @return \LDAP\Connection The LDAP resource */ - public function getConnectionResource() { - if(!$this->ldapConnectionRes) { + public function getConnectionResource(): \LDAP\Connection { + if (!$this->ldapConnectionRes) { $this->init(); - } else if(!$this->ldap->isResource($this->ldapConnectionRes)) { - $this->ldapConnectionRes = null; - $this->establishConnection(); } - if(is_null($this->ldapConnectionRes)) { - \OCP\Util::writeLog('user_ldap', 'No LDAP Connection to server ' . $this->configuration->ldapHost, \OCP\Util::ERROR); + if (is_null($this->ldapConnectionRes)) { + $this->logger->error( + 'No LDAP Connection to server ' . $this->configuration->ldapHost, + ['app' => 'user_ldap'] + ); throw new ServerNotAvailableException('Connection to LDAP server could not be established'); } return $this->ldapConnectionRes; @@ -198,23 +254,23 @@ class Connection extends LDAPUtility { /** * resets the connection resource */ - public function resetConnectionResource() { - if(!is_null($this->ldapConnectionRes)) { + public function resetConnectionResource(): void { + if (!is_null($this->ldapConnectionRes)) { @$this->ldap->unbind($this->ldapConnectionRes); $this->ldapConnectionRes = null; + $this->bindResult = []; } } /** * @param string|null $key - * @return string */ - private function getCacheKey($key) { - $prefix = 'LDAP-'.$this->configID.'-'.$this->configPrefix.'-'; - if(is_null($key)) { + private function getCacheKey($key): string { + $prefix = 'LDAP-' . $this->configID . '-' . $this->configPrefix . '-'; + if (is_null($key)) { return $prefix; } - return $prefix.md5($key); + return $prefix . hash('sha256', $key); } /** @@ -222,39 +278,42 @@ class Connection extends LDAPUtility { * @return mixed|null */ public function getFromCache($key) { - if(!$this->configured) { + if (!$this->configured) { $this->readConfiguration(); } - if(is_null($this->cache) || !$this->configuration->ldapCacheTTL) { + if (is_null($this->cache) || !$this->configuration->ldapCacheTTL) { return null; } $key = $this->getCacheKey($key); - return json_decode(base64_decode($this->cache->get($key)), true); + return json_decode(base64_decode($this->cache->get($key) ?? ''), true); + } + + public function getConfigPrefix(): string { + return $this->configPrefix; } /** * @param string $key * @param mixed $value - * - * @return string */ - public function writeToCache($key, $value) { - if(!$this->configured) { + public function writeToCache($key, $value, ?int $ttlOverride = null): void { + if (!$this->configured) { $this->readConfiguration(); } - if(is_null($this->cache) + if (is_null($this->cache) || !$this->configuration->ldapCacheTTL || !$this->configuration->ldapConfigurationActive) { - return null; + return; } - $key = $this->getCacheKey($key); + $key = $this->getCacheKey($key); $value = base64_encode(json_encode($value)); - $this->cache->set($key, $value, $this->configuration->ldapCacheTTL); + $ttl = $ttlOverride ?? $this->configuration->ldapCacheTTL; + $this->cache->set($key, $value, $ttl); } public function clearCache() { - if(!is_null($this->cache)) { + if (!is_null($this->cache)) { $this->cache->clear($this->getCacheKey(null)); } } @@ -262,11 +321,10 @@ class Connection extends LDAPUtility { /** * Caches the general LDAP configuration. * @param bool $force optional. true, if the re-read should be forced. defaults - * to false. - * @return null + * to false. */ - private function readConfiguration($force = false) { - if((!$this->configured || $force) && !is_null($this->configID)) { + private function readConfiguration(bool $force = false): void { + if ((!$this->configured || $force) && !is_null($this->configID)) { $this->configuration->readConfiguration(); $this->configured = $this->validateConfiguration(); } @@ -276,16 +334,17 @@ class Connection extends LDAPUtility { * set LDAP configuration with values delivered by an array, not read from configuration * @param array $config array that holds the config parameters in an associated array * @param array &$setParameters optional; array where the set fields will be given to - * @return boolean true if config validates, false otherwise. Check with $setParameters for detailed success on single parameters + * @param bool $throw if true, throw ConfigurationIssueException with details instead of returning false + * @return bool true if config validates, false otherwise. Check with $setParameters for detailed success on single parameters */ - public function setConfiguration($config, &$setParameters = null) { - if(is_null($setParameters)) { - $setParameters = array(); + public function setConfiguration(array $config, ?array &$setParameters = null, bool $throw = false): bool { + if (is_null($setParameters)) { + $setParameters = []; } $this->doNotValidate = false; $this->configuration->setConfiguration($config, $setParameters); - if(count($setParameters) > 0) { - $this->configured = $this->validateConfiguration(); + if (count($setParameters) > 0) { + $this->configured = $this->validateConfiguration($throw); } @@ -310,11 +369,11 @@ class Connection extends LDAPUtility { $this->readConfiguration(); $config = $this->configuration->getConfiguration(); $cta = $this->configuration->getConfigTranslationArray(); - $result = array(); - foreach($cta as $dbkey => $configkey) { - switch($configkey) { + $result = []; + foreach ($cta as $dbkey => $configkey) { + switch ($configkey) { case 'homeFolderNamingRule': - if(strpos($config[$configkey], 'attr:') === 0) { + if (str_starts_with($config[$configkey], 'attr:')) { $result[$dbkey] = substr($config[$configkey], 5); } else { $result[$dbkey] = ''; @@ -325,10 +384,11 @@ class Connection extends LDAPUtility { case 'ldapBaseGroups': case 'ldapAttributesForUserSearch': case 'ldapAttributesForGroupSearch': - if(is_array($config[$configkey])) { + if (is_array($config[$configkey])) { $result[$dbkey] = implode("\n", $config[$configkey]); break; } //else follows default + // no break default: $result[$dbkey] = $config[$configkey]; } @@ -336,78 +396,77 @@ class Connection extends LDAPUtility { return $result; } - private function doSoftValidation() { + private function doSoftValidation(): void { //if User or Group Base are not set, take over Base DN setting - foreach(array('ldapBaseUsers', 'ldapBaseGroups') as $keyBase) { + foreach (['ldapBaseUsers', 'ldapBaseGroups'] as $keyBase) { $val = $this->configuration->$keyBase; - if(empty($val)) { + if (empty($val)) { $this->configuration->$keyBase = $this->configuration->ldapBase; } } - foreach(array('ldapExpertUUIDUserAttr' => 'ldapUuidUserAttribute', - 'ldapExpertUUIDGroupAttr' => 'ldapUuidGroupAttribute') - as $expertSetting => $effectiveSetting) { + foreach (['ldapExpertUUIDUserAttr' => 'ldapUuidUserAttribute', + 'ldapExpertUUIDGroupAttr' => 'ldapUuidGroupAttribute'] as $expertSetting => $effectiveSetting) { $uuidOverride = $this->configuration->$expertSetting; - if(!empty($uuidOverride)) { + if (!empty($uuidOverride)) { $this->configuration->$effectiveSetting = $uuidOverride; } else { $uuidAttributes = Access::UUID_ATTRIBUTES; array_unshift($uuidAttributes, 'auto'); - if(!in_array($this->configuration->$effectiveSetting, - $uuidAttributes) - && (!is_null($this->configID))) { + if (!in_array($this->configuration->$effectiveSetting, $uuidAttributes) + && !is_null($this->configID)) { $this->configuration->$effectiveSetting = 'auto'; $this->configuration->saveConfiguration(); - \OCP\Util::writeLog('user_ldap', - 'Illegal value for the '. - $effectiveSetting.', '.'reset to '. - 'autodetect.', \OCP\Util::INFO); + $this->logger->info( + 'Illegal value for the ' . $effectiveSetting . ', reset to autodetect.', + ['app' => 'user_ldap'] + ); } - } } - $backupPort = intval($this->configuration->ldapBackupPort); + $backupPort = (int)$this->configuration->ldapBackupPort; if ($backupPort <= 0) { - $this->configuration->backupPort = $this->configuration->ldapPort; + $this->configuration->ldapBackupPort = $this->configuration->ldapPort; } //make sure empty search attributes are saved as simple, empty array - $saKeys = array('ldapAttributesForUserSearch', - 'ldapAttributesForGroupSearch'); - foreach($saKeys as $key) { + $saKeys = ['ldapAttributesForUserSearch', + 'ldapAttributesForGroupSearch']; + foreach ($saKeys as $key) { $val = $this->configuration->$key; - if(is_array($val) && count($val) === 1 && empty($val[0])) { - $this->configuration->$key = array(); + if (is_array($val) && count($val) === 1 && empty($val[0])) { + $this->configuration->$key = []; } } - if((stripos($this->configuration->ldapHost, 'ldaps://') === 0) + if ((stripos((string)$this->configuration->ldapHost, 'ldaps://') === 0) && $this->configuration->ldapTLS) { - $this->configuration->ldapTLS = false; - \OCP\Util::writeLog('user_ldap', - 'LDAPS (already using secure connection) and '. - 'TLS do not work together. Switched off TLS.', - \OCP\Util::INFO); + $this->configuration->ldapTLS = (string)false; + $this->logger->info( + 'LDAPS (already using secure connection) and TLS do not work together. Switched off TLS.', + ['app' => 'user_ldap'] + ); } } /** - * @return bool + * @throws ConfigurationIssueException */ - private function doCriticalValidation() { - $configurationOK = true; - $errorStr = 'Configuration Error (prefix '. - strval($this->configPrefix).'): '; - + private function doCriticalValidation(): void { //options that shall not be empty - $options = array('ldapHost', 'ldapPort', 'ldapUserDisplayName', - 'ldapGroupDisplayName', 'ldapLoginFilter'); - foreach($options as $key) { + $options = ['ldapHost', 'ldapUserDisplayName', + 'ldapGroupDisplayName', 'ldapLoginFilter']; + + //ldapPort should not be empty either unless ldapHost is pointing to a socket + if (!$this->configuration->usesLdapi()) { + $options[] = 'ldapPort'; + } + + foreach ($options as $key) { $val = $this->configuration->$key; - if(empty($val)) { - switch($key) { + if (empty($val)) { + switch ($key) { case 'ldapHost': $subj = 'LDAP Host'; break; @@ -427,58 +486,87 @@ class Connection extends LDAPUtility { $subj = $key; break; } - $configurationOK = false; - \OCP\Util::writeLog('user_ldap', - $errorStr.'No '.$subj.' given!', - \OCP\Util::WARN); + throw new ConfigurationIssueException( + 'No ' . $subj . ' given!', + $this->l10n->t('Mandatory field "%s" left empty', $subj), + ); } } //combinations $agent = $this->configuration->ldapAgentName; $pwd = $this->configuration->ldapAgentPassword; - if ( - ($agent === '' && $pwd !== '') - || ($agent !== '' && $pwd === '') - ) { - \OCP\Util::writeLog('user_ldap', - $errorStr.'either no password is given for the '. - 'user agent or a password is given, but not an '. - 'LDAP agent.', - \OCP\Util::WARN); - $configurationOK = false; + if ($agent === '' && $pwd !== '') { + throw new ConfigurationIssueException( + 'A password is given, but not an LDAP agent', + $this->l10n->t('A password is given, but not an LDAP agent'), + ); + } + if ($agent !== '' && $pwd === '') { + throw new ConfigurationIssueException( + 'No password is given for the user agent', + $this->l10n->t('No password is given for the user agent'), + ); } $base = $this->configuration->ldapBase; $baseUsers = $this->configuration->ldapBaseUsers; $baseGroups = $this->configuration->ldapBaseGroups; - if(empty($base) && empty($baseUsers) && empty($baseGroups)) { - \OCP\Util::writeLog('user_ldap', - $errorStr.'Not a single Base DN given.', - \OCP\Util::WARN); - $configurationOK = false; + if (empty($base)) { + throw new ConfigurationIssueException( + 'Not a single Base DN given', + $this->l10n->t('No LDAP base DN was given'), + ); + } + + if (!empty($baseUsers) && !$this->checkBasesAreValid($baseUsers, $base)) { + throw new ConfigurationIssueException( + 'User base is not in root base', + $this->l10n->t('User base DN is not a subnode of global base DN'), + ); } - if(mb_strpos($this->configuration->ldapLoginFilter, '%uid', 0, 'UTF-8') - === false) { - \OCP\Util::writeLog('user_ldap', - $errorStr.'login filter does not contain %uid '. - 'place holder.', - \OCP\Util::WARN); - $configurationOK = false; + if (!empty($baseGroups) && !$this->checkBasesAreValid($baseGroups, $base)) { + throw new ConfigurationIssueException( + 'Group base is not in root base', + $this->l10n->t('Group base DN is not a subnode of global base DN'), + ); } - return $configurationOK; + if (mb_strpos((string)$this->configuration->ldapLoginFilter, '%uid', 0, 'UTF-8') === false) { + throw new ConfigurationIssueException( + 'Login filter does not contain %uid placeholder.', + $this->l10n->t('Login filter does not contain %s placeholder.', ['%uid']), + ); + } + } + + /** + * Checks that all bases are subnodes of one of the root bases + */ + private function checkBasesAreValid(array $bases, array $rootBases): bool { + foreach ($bases as $base) { + $ok = false; + foreach ($rootBases as $rootBase) { + if (str_ends_with($base, $rootBase)) { + $ok = true; + break; + } + } + if (!$ok) { + return false; + } + } + return true; } /** * Validates the user specified configuration * @return bool true if configuration seems OK, false otherwise */ - private function validateConfiguration() { - - if($this->doNotValidate) { + private function validateConfiguration(bool $throw = false): bool { + if ($this->doNotValidate) { //don't do a validation if it is a new configuration with pure //default values. Will be allowed on changes via __set or //setConfiguration @@ -491,83 +579,94 @@ class Connection extends LDAPUtility { //second step: critical checks. If left empty or filled wrong, mark as //not configured and give a warning. - return $this->doCriticalValidation(); + try { + $this->doCriticalValidation(); + return true; + } catch (ConfigurationIssueException $e) { + if ($throw) { + throw $e; + } + $this->logger->warning( + 'Configuration Error (prefix ' . $this->configPrefix . '): ' . $e->getMessage(), + ['exception' => $e] + ); + return false; + } } /** * Connects and Binds to LDAP + * + * @throws ServerNotAvailableException */ - private function establishConnection() { - if(!$this->configuration->ldapConfigurationActive) { + private function establishConnection(): ?bool { + if (!$this->configuration->ldapConfigurationActive) { return null; } static $phpLDAPinstalled = true; - if(!$phpLDAPinstalled) { + if (!$phpLDAPinstalled) { return false; } - if(!$this->ignoreValidation && !$this->configured) { - \OCP\Util::writeLog('user_ldap', - 'Configuration is invalid, cannot connect', - \OCP\Util::WARN); + if (!$this->ignoreValidation && !$this->configured) { + $this->logger->warning( + 'Configuration is invalid, cannot connect', + ['app' => 'user_ldap'] + ); return false; } - if(!$this->ldapConnectionRes) { - if(!$this->ldap->areLDAPFunctionsAvailable()) { + if (!$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); + $this->logger->error( + 'function ldap_connect is not available. Make sure that the PHP ldap module is installed.', + ['app' => 'user_ldap'] + ); return false; } - if($this->configuration->turnOffCertCheck) { - if(putenv('LDAPTLS_REQCERT=never')) { - \OCP\Util::writeLog('user_ldap', - 'Turned off SSL certificate validation successfully.', - \OCP\Util::DEBUG); - } else { - \OCP\Util::writeLog('user_ldap', - 'Could not turn off SSL certificate validation.', - \OCP\Util::WARN); - } - } - $isOverrideMainServer = ($this->configuration->ldapOverrideMainServer - || $this->getFromCache('overrideMainServer')); - $isBackupHost = (trim($this->configuration->ldapBackupHost) !== ""); + $hasBackupHost = (trim($this->configuration->ldapBackupHost ?? '') !== ''); + $hasBackgroundHost = (trim($this->configuration->ldapBackgroundHost ?? '') !== ''); + $useBackgroundHost = (\OC::$CLI && $hasBackgroundHost); + $overrideCacheKey = ($useBackgroundHost ? 'overrideBackgroundServer' : 'overrideMainServer'); + $forceBackupHost = ($this->configuration->ldapOverrideMainServer || $this->getFromCache($overrideCacheKey)); $bindStatus = false; - $error = -1; - try { - if (!$isOverrideMainServer) { - $this->doConnect($this->configuration->ldapHost, - $this->configuration->ldapPort); - $bindStatus = $this->bind(); - $error = $this->ldap->isResource($this->ldapConnectionRes) ? - $this->ldap->errno($this->ldapConnectionRes) : -1; - } - if($bindStatus === true) { - return $bindStatus; - } - } catch (ServerNotAvailableException $e) { - if(!$isBackupHost) { - throw $e; + if (!$forceBackupHost) { + try { + $host = $this->configuration->ldapHost ?? ''; + $port = $this->configuration->ldapPort ?? ''; + if ($useBackgroundHost) { + $host = $this->configuration->ldapBackgroundHost ?? ''; + $port = $this->configuration->ldapBackgroundPort ?? ''; + } + $this->doConnect($host, $port); + return $this->bind(); + } catch (ServerNotAvailableException $e) { + if (!$hasBackupHost) { + throw $e; + } } + $this->logger->warning( + 'Main LDAP not reachable, connecting to backup: {msg}', + [ + 'app' => 'user_ldap', + 'msg' => $e->getMessage(), + 'exception' => $e, + ] + ); } - //if LDAP server is not reachable, try the Backup (Replica!) Server - if($isBackupHost && ($error !== 0 || $isOverrideMainServer)) { - $this->doConnect($this->configuration->ldapBackupHost, - $this->configuration->ldapBackupPort); - $bindStatus = $this->bind(); - $error = $this->ldap->isResource($this->ldapConnectionRes) ? - $this->ldap->errno($this->ldapConnectionRes) : -1; - if($bindStatus && $error === 0 && !$this->getFromCache('overrideMainServer')) { - //when bind to backup server succeeded and failed to main server, - //skip contacting him until next cache refresh - $this->writeToCache('overrideMainServer', true); - } + // if LDAP server is not reachable, try the Backup (Replica!) Server + $this->doConnect($this->configuration->ldapBackupHost ?? '', $this->configuration->ldapBackupPort ?? ''); + $this->bindResult = []; + $bindStatus = $this->bind(); + $error = $this->ldap->isResource($this->ldapConnectionRes) + ? $this->ldap->errno($this->ldapConnectionRes) : -1; + if ($bindStatus && $error === 0 && !$forceBackupHost) { + //when bind to backup server succeeded and failed to main server, + //skip contacting it for 15min + $this->writeToCache($overrideCacheKey, true, 60 * 15); } return $bindStatus; @@ -578,26 +677,47 @@ class Connection extends LDAPUtility { /** * @param string $host * @param string $port - * @return bool * @throws \OC\ServerNotAvailableException */ - private function doConnect($host, $port) { + private function doConnect($host, $port): bool { if ($host === '') { return false; } - $this->ldapConnectionRes = $this->ldap->connect($host, $port); + $this->ldapConnectionRes = $this->ldap->connect($host, $port) ?: null; + + if ($this->ldapConnectionRes === null) { + throw new ServerNotAvailableException('Connection failed'); + } - if(!$this->ldap->setOption($this->ldapConnectionRes, LDAP_OPT_PROTOCOL_VERSION, 3)) { + if (!$this->ldap->setOption($this->ldapConnectionRes, LDAP_OPT_PROTOCOL_VERSION, 3)) { throw new ServerNotAvailableException('Could not set required LDAP Protocol version.'); } - if(!$this->ldap->setOption($this->ldapConnectionRes, LDAP_OPT_REFERRALS, 0)) { + if (!$this->ldap->setOption($this->ldapConnectionRes, LDAP_OPT_REFERRALS, 0)) { throw new ServerNotAvailableException('Could not disable LDAP referrals.'); } - if($this->configuration->ldapTLS) { - if(!$this->ldap->startTls($this->ldapConnectionRes)) { + if (!$this->ldap->setOption($this->ldapConnectionRes, LDAP_OPT_NETWORK_TIMEOUT, $this->configuration->ldapConnectionTimeout)) { + throw new ServerNotAvailableException('Could not set network timeout'); + } + + if ($this->configuration->ldapTLS) { + if ($this->configuration->turnOffCertCheck) { + if ($this->ldap->setOption($this->ldapConnectionRes, LDAP_OPT_X_TLS_REQUIRE_CERT, LDAP_OPT_X_TLS_NEVER)) { + $this->logger->debug( + 'Turned off SSL certificate validation successfully.', + ['app' => 'user_ldap'] + ); + } else { + $this->logger->warning( + 'Could not turn off SSL certificate validation.', + ['app' => 'user_ldap'] + ); + } + } + + if (!$this->ldap->startTls($this->ldapConnectionRes)) { throw new ServerNotAvailableException('Start TLS failed, when connecting to LDAP host ' . $host . '.'); } } @@ -609,25 +729,47 @@ class Connection extends LDAPUtility { * Binds to LDAP */ public function bind() { - if(!$this->configuration->ldapConfigurationActive) { + if (!$this->configuration->ldapConfigurationActive) { return false; } - $cr = $this->getConnectionResource(); - if(!$this->ldap->isResource($cr)) { - return false; + $cr = $this->ldapConnectionRes; + if (!$this->ldap->isResource($cr)) { + $cr = $this->getConnectionResource(); + } + + if ( + count($this->bindResult) !== 0 + && $this->bindResult['sum'] === md5($this->configuration->ldapAgentName . $this->configPrefix . $this->configuration->ldapAgentPassword) + ) { + // don't attempt to bind again with the same data as before + // bind might have been invoked via getConnectionResource(), + // but we need results specifically for e.g. user login + return $this->bindResult['result']; } + $ldapLogin = @$this->ldap->bind($cr, - $this->configuration->ldapAgentName, - $this->configuration->ldapAgentPassword); - if(!$ldapLogin) { + $this->configuration->ldapAgentName, + $this->configuration->ldapAgentPassword); + + $this->bindResult = [ + 'sum' => md5($this->configuration->ldapAgentName . $this->configPrefix . $this->configuration->ldapAgentPassword), + 'result' => $ldapLogin, + ]; + + if (!$ldapLogin) { $errno = $this->ldap->errno($cr); - \OCP\Util::writeLog('user_ldap', + $this->logger->warning( 'Bind failed: ' . $errno . ': ' . $this->ldap->error($cr), - \OCP\Util::WARN); - - // Set to failure mode, if LDAP error code is not LDAP_SUCCESS or LDAP_INVALID_CREDENTIALS - if($errno !== 0x00 && $errno !== 0x31) { + ['app' => 'user_ldap'] + ); + + // Set to failure mode, if LDAP error code is not one of + // - LDAP_SUCCESS (0) + // - LDAP_INVALID_CREDENTIALS (49) + // - LDAP_INSUFFICIENT_ACCESS (50, spotted Apple Open Directory) + // - LDAP_UNWILLING_TO_PERFORM (53, spotted eDirectory) + if (!in_array($errno, [0, 49, 50, 53], true)) { $this->ldapConnectionRes = null; } @@ -635,5 +777,4 @@ class Connection extends LDAPUtility { } return true; } - } |