<?php
# Lifter007: TODO
# Lifter003: TODO
# Lifter010: TODO
// +---------------------------------------------------------------------------+
// This file is part of Stud.IP
// StudipAuthStandard.class.php
// Basic Stud.IP authentication, using the Stud.IP database
//
// Copyright (c) 2003 André Noack <noack@data-quest.de>
// Suchi & Berg GmbH <info@data-quest.de>
// +---------------------------------------------------------------------------+
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or any later version.
// +---------------------------------------------------------------------------+
// 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 General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
// +---------------------------------------------------------------------------+

/**
* Basic Stud.IP authentication, using the Stud.IP database
*
* Basic Stud.IP authentication, using the Stud.IP database
*
* @access   public
* @author   André Noack <noack@data-quest.de>
* @package
*/
class StudipAuthStandard extends StudipAuthAbstract
{

    var $bad_char_regex =  false;

    /**
    *
    *
    *
    * @access public
    *
    */
    function isAuthenticated($username, $password)
    {
        $user = User::findByUsername($username);
        if (!$user || !$password || mb_strlen($password) > 72) {
            $this->error_msg= _('Ungültige Benutzername/Passwort-Kombination!') ;
            return false;
        } elseif ($user->username !== $username) {
            $this->error_msg = _('Bitte achten Sie auf korrekte Groß-Kleinschreibung beim Username!');
            return false;
        } elseif (!is_null($user->auth_plugin) && $user->auth_plugin !== 'standard') {
            $this->error_msg = sprintf(_('Dieser Benutzername wird bereits über %s authentifiziert!'),$user->auth_plugin) ;
            return false;
        } else {
            $pass = $user->password;   // Password is stored as a md5 hash
        }
        $hasher = UserManagement::getPwdHasher();
        $old_style_check = (strlen($pass) === 32 && md5($password) === $pass);
        $migrated_check = $hasher->CheckPassword(md5($password), $pass);
        $check = $hasher->CheckPassword($password, $pass);
        $old_encoding_check = $hasher->CheckPassword(legacy_studip_utf8decode($password), $pass);

        if (($migrated_check || $old_style_check || $old_encoding_check) && !$check) {
            // time to convert the password
            $user->password = $hasher->HashPassword($password);
            $user->store();
        }

        if (!($check || $migrated_check || $old_style_check || $old_encoding_check)) {
            $this->error_msg= _('Das Passwort ist falsch!');
            return false;
        } else {
            return true;
        }
    }

    function isUsedUsername($username)
    {
        return User::findByUsername($username) ? true : false;
    }

}