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<?php

/***************************************************************************

 *                                login.php

 *                            -------------------

 *   begin                : Saturday, Feb 13, 2001

 *   copyright            : (C) 2001 The phpBB Group

 *   email                : support@phpbb.com

 *

 *   $Id$

 *

 *

 ***************************************************************************/

/***************************************************************************

 *

 *   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

 *   (at your option) any later version.

 *

 ***************************************************************************/

//

// Allow people to reach login page if

// board is shut down

//

define("IN_LOGIN", true);

define('IN_PHPBB', true);

$phpbb_root_path = './';

include($phpbb_root_path . 'extension.inc');

include($phpbb_root_path . 'common.'.$phpEx);

//

// Set page ID for session management

//

$userdata = session_pagestart($user_ip, PAGE_LOGIN);

init_userprefs($userdata);

//

// End session management

//

$header_location = ( @preg_match('/Microsoft|WebSTAR|Xitami/', getenv('SERVER_SOFTWARE')) ) ? 'Refresh: 0; URL=' : 'Location: ';

if( isset($HTTP_POST_VARS['login']) || isset($HTTP_GET_VARS['login']) || isset($HTTP_POST_VARS['logout']) || isset($HTTP_GET_VARS['logout']) )

{

        //

        // This appears to work for IIS5 CGI under Win2K. Uses getenv

        // since this doesn't exist for ISAPI mode and therefore the

        // normal Location redirector is used in preference

        //

        if( ( isset($HTTP_POST_VARS['login']) || isset($HTTP_GET_VARS['login']) ) && !$userdata['session_logged_in'] )

        {

                $username = isset($HTTP_POST_VARS['username']) ? $HTTP_POST_VARS['username'] : '';

                $password = isset($HTTP_POST_VARS['password']) ? $HTTP_POST_VARS['password'] : '';

                $sql = "SELECT user_id, username, user_password, user_active, user_level

                        FROM " . USERS_TABLE . "

                        WHERE username = '" . str_replace("\'", "''", $username) . "'";

                if ( !($result = $db->sql_query($sql)) )

                {

                        message_die(GENERAL_ERROR, 'Error in obtaining userdata', '', __LINE__, __FILE__, $sql);

                }

                if( $row = $db->sql_fetchrow($result) )

                {

                        if( $row['user_level'] != ADMIN && $board_config['board_disable'] )

                        {

                                header($header_location . append_sid("index.$phpEx", true));

                                exit;

                        }

                        else

                        {

                                if( md5($password) == $row['user_password'] && $row['user_active'] )

                                {

                                        $autologin = ( isset($HTTP_POST_VARS['autologin']) ) ? TRUE : 0;

                                        $session_id = session_begin($row['user_id'], $user_ip, PAGE_INDEX, FALSE, $autologin);

                                        if( $session_id )

                                        {

                                                if( !empty($HTTP_POST_VARS['redirect']) )

                                                {

                                                        header($header_location . append_sid($HTTP_POST_VARS['redirect'], true));

                                                        exit;

                                                }

                                                else

                                                {

                                                        header($header_location . append_sid("index.$phpEx", true));

                                                        exit;

                                                }

                                        }

                                        else

                                        {

                                                message_die(CRITICAL_ERROR, "Couldn't start session : login", "", __LINE__, __FILE__);

                                        }

                                }

                                else

                                {

                                        $redirect = ( !empty($HTTP_POST_VARS['redirect']) ) ? $HTTP_POST_VARS['redirect'] : '';

                                        $template->assign_vars(array(

                                                'META' => '<meta http-equiv="refresh" content="3;url=' . append_sid("login.$phpEx?redirect=$redirect") . '">')

                                        );

                                        $message = $lang['Error_login'] . '<br /><br />' . sprintf($lang['Click_return_login'], '<a href="' . append_sid("login.$phpEx?redirect=$redirect") . '">', '</a>') . '<br /><br />' .  sprintf($lang['Click_return_index'], '<a href="' . append_sid("index.$phpEx") . '">', '</a>');

                                        message_die(GENERAL_MESSAGE, $message);

                                }

                        }

                }

                else

                {

                        $redirect = ( !empty($HTTP_POST_VARS['redirect']) ) ? $HTTP_POST_VARS['redirect'] : "";

                        $template->assign_vars(array(

                                'META' => '<meta http-equiv="refresh" content="3;url=' . append_sid("login.$phpEx?redirect=$redirect") . '">')

                        );

                        $message = $lang['Error_login'] . '<br /><br />' . sprintf($lang['Click_return_login'], '<a href="' . append_sid("login.$phpEx?redirect=$redirect") . '">', '</a>') . '<br /><br />' .  sprintf($lang['Click_return_index'], '<a href="' . append_sid("index.$phpEx") . '">', '</a>');

                        message_die(GENERAL_MESSAGE, $message);

                }

        }

        else if( ( isset($HTTP_GET_VARS['logout']) || isset($HTTP_POST_VARS['logout']) ) && $userdata['session_logged_in'] )

        {

                if( $userdata['session_logged_in'] )

                {

                        session_end($userdata['session_id'], $userdata['user_id']);

                }

                if( !empty($HTTP_POST_VARS['redirect']) )

                {

                        header($header_location . append_sid($HTTP_POST_VARS['redirect'], true));

                        exit;

                }

                else

                {

                        header($header_location . append_sid("index.$phpEx", true));

                        exit;

                }

        }

        else

        {

                if( !empty($HTTP_POST_VARS['redirect']) )

                {

                        header($header_location . append_sid($HTTP_POST_VARS['redirect'], true));

                        exit;

                }

                else

                {

                        header($header_location . append_sid("index.$phpEx", true));

                        exit;

                }

        }

}

else

{

        //

        // Do a full login page dohickey if

        // user not already logged in

        //

        if( !$userdata['session_logged_in'] )

        {

                $page_title = $lang['Login'];

                include($phpbb_root_path . 'includes/page_header.'.$phpEx);

                $template->set_filenames(array(

                        'body' => 'login_body.tpl')

                );

                if( isset($HTTP_POST_VARS['redirect']) || isset($HTTP_GET_VARS['redirect']) )

                {

                        $forward_to = $HTTP_SERVER_VARS['QUERY_STRING'];

                        if( preg_match("/^redirect=(.*)$/si", $forward_to, $forward_matches) )

                        {

                                $forward_to = ( !empty($forward_matches[3]) ) ? $forward_matches[3] : $forward_matches[1];

                                $forward_match = explode('&', $forward_to);

                                if(count($forward_match) > 1)

                                {

                                        $forward_page = '';

                                        for($i = 1; $i < count($forward_match); $i++)

                                        {

                                                if( !ereg("sid=", $forward_match[$i]) )

                                                {

                                                        if( $forward_page != '' )

                                                        {

                                                                $forward_page .= '&';

                                                        }

                                                        $forward_page .= $forward_match[$i];

                                                }

                                        }

                                        $forward_page = $forward_match[0] . '?' . $forward_page;

                                }

                                else

                                {

                                        $forward_page = $forward_match[0];

                                }

                        }

                }

                else

                {

                        $forward_page = '';

                }

                $username = ( $userdata['user_id'] != ANONYMOUS ) ? $userdata['username'] : '';

                $s_hidden_fields = '<input type="hidden" name="redirect" value="' . $forward_page . '" />';

                make_jumpbox('viewforum.'.$phpEx, $forum_id);

                $template->assign_vars(array(

                        'USERNAME' => $username,

                        'L_ENTER_PASSWORD' => $lang['Enter_password'],

                        'L_SEND_PASSWORD' => $lang['Forgotten_password'],

                        'U_SEND_PASSWORD' => append_sid("profile.$phpEx?mode=sendpassword"),

                        'S_HIDDEN_FIELDS' => $s_hidden_fields)

                );

                $template->pparse('body');

                include($phpbb_root_path . 'includes/page_tail.'.$phpEx);

        }

        else

        {

                header($header_location . append_sid("index.$phpEx", true));

                exit;

        }

}

?>