<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Amf

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Auth.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

/** @see Zend_Amf_Auth_Abstract */

require_once 'Zend/Amf/Auth/Abstract.php';

/** @see Zend_Acl */

require_once 'Zend/Acl.php';

/** @see Zend_Auth_Result */

require_once 'Zend/Auth/Result.php';

/**

 * This class implements authentication against XML file with roles for Flex Builder.

 *

 * @package    Zend_Amf

 * @subpackage Adobe

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Amf_Adobe_Auth extends Zend_Amf_Auth_Abstract

{

    /**

     * ACL for authorization

     *

     * @var Zend_Acl

     */

    protected $_acl;

    /**

     * Username/password array

     *

     * @var array

     */

    protected $_users = array();

    /**

     * Create auth adapter

     *

     * @param string $rolefile File containing XML with users and roles

     */

    public function __construct($rolefile)

    {

        $this->_acl = new Zend_Acl();

        $xml = simplexml_load_file($rolefile);

/*

Roles file format:

 <roles>

   <role id=”admin”>

        <user name=”user1” password=”pwd”/>

    </role>

   <role id=”hr”>

        <user name=”user2” password=”pwd2”/>

    </role>

</roles>

*/

        foreach($xml->role as $role) {

            $this->_acl->addRole(new Zend_Acl_Role((string)$role["id"]));

            foreach($role->user as $user) {

                $this->_users[(string)$user["name"]] = array("password" => (string)$user["password"],

                                                             "role" => (string)$role["id"]);

            }

        }

    }

    /**

     * Get ACL with roles from XML file

     *

     * @return Zend_Acl

     */

    public function getAcl()

    {

        return $this->_acl;

    }

    /**

     * Perform authentication

     *

     * @throws Zend_Auth_Adapter_Exception

     * @return Zend_Auth_Result

     * @see Zend_Auth_Adapter_Interface#authenticate()

     */

    public function authenticate()

    {

        if (empty($this->_username) ||

            empty($this->_password)) {

            /**

             * @see Zend_Auth_Adapter_Exception

             */

            require_once 'Zend/Auth/Adapter/Exception.php';

            throw new Zend_Auth_Adapter_Exception('Username/password should be set');

        }

        if(!isset($this->_users[$this->_username])) {

            return new Zend_Auth_Result(Zend_Auth_Result::FAILURE_IDENTITY_NOT_FOUND,

                null,

                array('Username not found')

                );

        }

        $user = $this->_users[$this->_username];

        if($user["password"] != $this->_password) {

            return new Zend_Auth_Result(Zend_Auth_Result::FAILURE_CREDENTIAL_INVALID,

                null,

                array('Authentication failed')

                );

        }

        $id = new stdClass();

        $id->role = $user["role"];

        $id->name = $this->_username;

        return new Zend_Auth_Result(Zend_Auth_Result::SUCCESS, $id);

    }

}