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View File Name : Peclsasl.php

<?php
/**
 * Copyright 2004-2017 Horde LLC (http://www.horde.org/)
 *
 * See the enclosed file COPYING for license information (LGPL). If you did
 * not receive this file, see http://www.horde.org/licenses/lgpl21.
 *
 * @author   Jon Parise <jon@horde.org>
 * @category Horde
 * @license  http://www.horde.org/licenses/lgpl21 LGPL-2.1
 * @package  Auth
 */

/**
 * The Horde_Auth_Peclsasl:: class provides a SASL-based implementation of the
 * Horde authentication system.
 *
 * SASL is the Simple Authentication and Security Layer (as defined by RFC
 * 2222). It provides a system for adding plugable authenticating support to
 * connection-based protocols.
 *
 * This driver relies on the PECL sasl package:
 *   http://pecl.php.net/package/sasl
 *
 * @author    Jon Parise <jon@horde.org>
 * @category  Horde
 * @copyright 2004-2017 Horde LLC
 * @license   http://www.horde.org/licenses/lgpl21 LGPL-2.1
 * @package   Auth
 */
class Horde_Auth_Peclsasl extends Horde_Auth_Base
{
    /**
     * Constructor.
     *
     * @param array $params  Optional parameters:
     * <pre>
     * 'app' - (string) The name of the authenticating application.
     *         DEFAULT: horde
     * 'service' - (string) The name of the SASL service to use when
     *             authenticating.
     *             DEFAULT: php
     * </pre>
     *
     * @throws Horde_Auth_Exception
     */
    public function __construct(array $params = array())
    {
        if (!Horde_Util::extensionExists('sasl')) {
            throw new Horde_Auth_Exception('Horde_Auth_Peclsasl:: requires the sasl PECL extension to be loaded.');
        }

        $params = array_merge(array(
            'app' => 'horde',
            'service' => 'php'
        ), $params);

        parent::__construct($params);

        sasl_server_init($this->_params['app']);
    }

    /**
     * Find out if a set of login credentials are valid.
     *
     * @param string $userId      The userId to check.
     * @param array $credentials  An array of login credentials.
     *
     * @throws Horde_Auth_Exception
     */
    protected function _authenticate($userId, $credentials)
    {
        if (empty($credentials['password'])) {
            throw new Horde_Auth_Exception('', Horde_Auth::REASON_BADLOGIN);
        }

        $conn = sasl_server_new($this->_params['service']);
        if (!is_resource($conn)) {
            throw new Horde_Auth_Exception('Failed to create new SASL connection.');
        }

        if (!sasl_checkpass($conn, $userId, $credentials['password'])) {
            throw new Horde_Auth_Exception(sasl_errdetail($conn));
        }
    }

}