<?php
/***************************************************************************
* login.php
* -------------------
* begin : Saturday, Feb 13, 2001
* copyright : (C) 2001 The phpBB Group
* email : support@phpbb.com
*
* $Id: login.php,v 1.47.2.25 2006/12/16 13:11:24 acydburn Exp $
*
*
***************************************************************************/
/***************************************************************************
*
* 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($userdata);
//
// End session management
//
// session id check
if (!empty($HTTP_POST_VARS['sid']) || !empty($HTTP_GET_VARS['sid']))
{
$sid = (!empty($HTTP_POST_VARS['sid'])) ? $HTTP_POST_VARS['sid'] : $HTTP_GET_VARS['sid'];
}
else
{
$sid = '';
}
if( isset($HTTP_POST_VARS['login']) || isset($HTTP_GET_VARS['login']) || isset($HTTP_POST_VARS['logout']) || isset($HTTP_GET_VARS['logout']) )
{
if( ( isset($HTTP_POST_VARS['login']) || isset($HTTP_GET_VARS['login']) ) && (!$userdata['session_logged_in'] || isset($HTTP_POST_VARS['admin'])) )
{
$username = isset($HTTP_POST_VARS['username']) ? phpbb_clean_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, user_login_tries, user_last_login_try
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 && $board_config['board_disable'] )
{
redirect(append_sid("index.$phpEx", true));
}
else
{
// If the last login is more than x minutes ago, then reset the login tries/time
if ($row['user_last_login_try'] && $board_config['login_reset_time'] && $row['user_last_login_try'] < (time() - ($board_config['login_reset_time'] * 60)))
{
$db->sql_query('UPDATE ' . USERS_TABLE . ' SET user_login_tries = 0, user_last_login_try = 0 WHERE user_id = ' . $row['user_id']);
$row['user_last_login_try'] = $row['user_login_tries'] = 0;
}
// Check to see if user is allowed to login again... if his tries are exceeded
if ($row['user_last_login_try'] && $board_config['login_reset_time'] && $board_config['max_login_attempts'] &&
$row['user_last_login_try'] >= (time() - ($board_config['login_reset_time'] * 60)) && $row['user_login_tries'] >= $board_config['max_login_attempts'] && $userdata['user_level'] != ADMIN)
{
message_die(GENERAL_MESSAGE, sprintf($lang['Login_attempts_exceeded'], $board_config['max_login_attempts'], $board_config['login_reset_time']));
}
if( md5($password) == $row['user_password'] && $row['user_active'] )
{
$autologin = ( isset($HTTP_POST_VARS['autologin']) ) ? TRUE : 0;
$admin = (isset($HTTP_POST_VARS['admin'])) ? 1 : 0;
$session_id = session_begin($row['user_id'], $user_ip, PAGE_INDEX, FALSE, $autologin, $admin);
// Reset login tries
$db->sql_query('UPDATE ' . USERS_TABLE . ' SET user_login_tries = 0, user_last_login_try = 0 WHERE user_id = ' . $row['user_id']);
if( $session_id )
{
$url = ( !empty($HTTP_POST_VARS['redirect']) ) ? str_replace('&', '&', htmlspecialchars($HTTP_POST_VARS['redirect'])) : "index.$phpEx";
redirect(append_sid($url, true));
}
else
{
message_die(CRITICAL_ERROR, "Couldn't start session : login", "", __LINE__, __FILE__);
}
}
// Only store a failed login attempt for an active user - inactive users can't login even with a correct password
elseif( $row['user_active'] )
{
// Save login tries and last login
if ($row['user_id'] != ANONYMOUS)
{
$sql = 'UPDATE ' . USERS_TABLE . '
SET user_login_tries = user_login_tries + 1, user_last_login_try = ' . time() . '
WHERE user_id = ' . $row['user_id'];
$db->sql_query($sql);
}
}
$redirect = ( !empty($HTTP_POST_VARS['redirect']) ) ? str_replace('&', '&', htmlspecialchars($HTTP_POST_VARS['redirect'])) : '';
$redirect = str_replace('?', '&', $redirect);
if (strstr(urldecode($redirect), "\n") || strstr(urldecode($redirect), "\r") || strstr(urldecode($redirect), ';url'))
{
message_die(GENERAL_ERROR, 'Tried to redirect to potentially insecure url.');
}
$template->assign_vars(array(
'META' => "<meta http-equiv=\"refresh\" content=\"3;url=login.$phpEx?redirect=$redirect\">")
);
$message = $lang['Error_login'] . '<br /><br />' . sprintf($lang['Click_return_login'], "<a href=\"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']) ) ? str_replace('&', '&', htmlspecialchars($HTTP_POST_VARS['redirect'])) : "";
$redirect = str_replace("?", "&", $redirect);
if (strstr(urldecode($redirect), "\n") || strstr(urldecode($redirect), "\r") || strstr(urldecode($redirect), ';url'))
{
message_die(GENERAL_ERROR, 'Tried to redirect to potentially insecure url.');
}
$template->assign_vars(array(
'META' => "<meta http-equiv=\"refresh\" content=\"3;url=login.$phpEx?redirect=$redirect\">")
);
$message = $lang['Error_login'] . '<br /><br />' . sprintf($lang['Click_return_login'], "<a href=\"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']) ) && $userdata['session_logged_in'] )
{
// session id check
if ($sid == '' || $sid != $userdata['session_id'])
{
message_die(GENERAL_ERROR, 'Invalid_session');
}
if( $userdata['session_logged_in'] )
{
session_end($userdata['session_id'], $userdata['user_id']);
}
if (!empty($HTTP_POST_VARS['redirect']) || !empty($HTTP_GET_VARS['redirect']))
{
$url = (!empty($HTTP_POST_VARS['redirect'])) ? htmlspecialchars($HTTP_POST_VARS['redirect']) : htmlspecialchars($HTTP_GET_VARS['redirect']);
$url = str_replace('&', '&', $url);
redirect(append_sid($url, true));
}
else
{
redirect(append_sid("index.$phpEx", true));
}
}
else
{
$url = ( !empty($HTTP_POST_VARS['redirect']) ) ? str_replace('&', '&', htmlspecialchars($HTTP_POST_VARS['redirect'])) : "index.$phpEx";
redirect(append_sid($url, true));
}
}
else
{
//
// Do a full login page dohickey if
// user not already logged in
//
if( !$userdata['session_logged_in'] || (isset($HTTP_GET_VARS['admin']) && $userdata['session_logged_in'] && $userdata['user_level'] == ADMIN))
{
$page_title = $lang['Login'];
include($phpbb_root_path . 'includes/page_header.'.$phpEx);
$template->set_filenames(array(
'body' => 'login_body.tpl')
);
$forward_page = '';
if( isset($HTTP_POST_VARS['redirect']) || isset($HTTP_GET_VARS['redirect']) )
{
$forward_to = $HTTP_SERVER_VARS['QUERY_STRING'];
if( preg_match("/^redirect=([a-z0-9\.#\/\?&=\+\-_]+)/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)
{
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];
}
}
}
$username = ( $userdata['user_id'] != ANONYMOUS ) ? $userdata['username'] : '';
$s_hidden_fields = '<input type="hidden" name="redirect" value="' . $forward_page . '" />';
$s_hidden_fields .= (isset($HTTP_GET_VARS['admin'])) ? '<input type="hidden" name="admin" value="1" />' : '';
make_jumpbox('viewforum.'.$phpEx);
$template->assign_vars(array(
'USERNAME' => $username,
'L_ENTER_PASSWORD' => (isset($HTTP_GET_VARS['admin'])) ? $lang['Admin_reauthenticate'] : $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.'.$phpEx);
}
else
{
redirect(append_sid("index.$phpEx", true));
}
}
?>
