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<?php
/*
** Copyright (C) 2001-2025 Zabbix SIA
**
** This program is free software: you can redistribute it and/or modify it under the terms of
** the GNU Affero General Public License as published by the Free Software Foundation, version 3.
**
** 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 along with this program.
** If not, see <https://www.gnu.org/licenses/>.
**/
/**
* A class for validating LDAP credentials.
*/
class CLdapAuthValidator extends CValidator {
/**
* Initialized LDAP service instance to test user credentials.
*
* @var CLdap
*/
public $ldap;
/**
* Checks if the given user name and password are valid.
*
* The $value array must have the following attributes:
* - username - user name
* - password - password
*
* @param array $value
*
* @return bool
*/
public function validate($value) {
$status = $this->ldap->checkCredentials($value['username'], $value['password']);
if (!$status) {
$this->setError($this->ldap->error);
}
return $status;
}
/**
* Return error message.
*
* @return string
*/
public function getError() {
$error = parent::getError();
$messages = [
CLdap::ERR_PHP_EXTENSION => _('PHP LDAP extension missing.'),
CLdap::ERR_SERVER_UNAVAILABLE => _('Cannot connect to LDAP server.'),
CLdap::ERR_BIND_FAILED => _('Cannot bind to LDAP server.'),
CLdap::ERR_BIND_ANON_FAILED => _('Cannot bind anonymously to LDAP server.'),
CLdap::ERR_OPT_PROTOCOL_FAILED => _('Setting LDAP protocol failed.'),
CLdap::ERR_OPT_TLS_FAILED => _('Starting TLS failed.'),
CLdap::ERR_OPT_REFERRALS_FAILED => _('Setting LDAP referrals to "Off" failed.'),
CLdap::ERR_OPT_DEREF_FAILED => _('Setting LDAP dereferencing mode failed.'),
CLdap::ERR_BIND_DNSTRING_UNAVAILABLE => _('Cannot bind to LDAP server.'),
CLdap::ERR_USER_NOT_FOUND => _('Incorrect user name or password or account is temporarily blocked.')
];
return array_key_exists($error, $messages) ? $messages[$error] : '';
}
/**
* Check if connection error.
*
* @return bool
*/
public function isConnectionError() {
return (parent::getError() !== CLdap::ERR_USER_NOT_FOUND);
}
}
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