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<?php
/**
* Database auth plug-in for phpBB3
*
* Authentication plug-ins is largely down to Sergey Kanareykin, our thanks to him.
*
* This is for authentication via the integrated user table
*
* @package login
* @version $Id$
* @copyright (c) 2005 phpBB Group
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
*
*/
/**
* Login function
*/
function login_db(&$username, &$password)
{
global $db, $config;
$sql = 'SELECT user_id, username, user_password, user_passchg, user_pass_convert, user_email, user_type, user_login_attempts
FROM ' . USERS_TABLE . "
WHERE username_clean = '" . $db->sql_escape(utf8_clean_string($username)) . "'";
$result = $db->sql_query($sql);
$row = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
if (!$row)
{
return array(
'status' => LOGIN_ERROR_USERNAME,
'error_msg' => 'LOGIN_ERROR_USERNAME',
'user_row' => array('user_id' => ANONYMOUS),
);
}
// If there are too much login attempts, we need to check for an confirm image
// Every auth module is able to define what to do by itself...
if ($config['max_login_attempts'] && $row['user_login_attempts'] >= $config['max_login_attempts'])
{
$confirm_id = request_var('confirm_id', '');
$confirm_code = request_var('confirm_code', '');
// Visual Confirmation handling
if (!$confirm_id)
{
return array(
'status' => LOGIN_ERROR_ATTEMPTS,
'error_msg' => 'LOGIN_ERROR_ATTEMPTS',
'user_row' => $row,
);
}
else
{
global $user;
$sql = 'SELECT code
FROM ' . CONFIRM_TABLE . "
WHERE confirm_id = '" . $db->sql_escape($confirm_id) . "'
AND session_id = '" . $db->sql_escape($user->session_id) . "'
AND confirm_type = " . CONFIRM_LOGIN;
$result = $db->sql_query($sql);
$confirm_row = $db->sql_fetchrow($result);
$db->sql_freeresult($result);
if ($confirm_row)
{
if (strcasecmp($confirm_row['code'], $confirm_code) === 0)
{
$sql = 'DELETE FROM ' . CONFIRM_TABLE . "
WHERE confirm_id = '" . $db->sql_escape($confirm_id) . "'
AND session_id = '" . $db->sql_escape($user->session_id) . "'
AND confirm_type = " . CONFIRM_LOGIN;
$db->sql_query($sql);
}
else
{
return array(
'status' => LOGIN_ERROR_ATTEMPTS,
'error_msg' => 'CONFIRM_CODE_WRONG',
'user_row' => $row,
);
}
}
else
{
return array(
'status' => LOGIN_ERROR_ATTEMPTS,
'error_msg' => 'CONFIRM_CODE_WRONG',
'user_row' => $row,
);
}
}
}
// If the password convert flag is set we need to convert it
if ($row['user_pass_convert'])
{
// in phpBB2 passwords were used exactly as they were sent, with addslashes applied
$password_old_format = isset($_REQUEST['password']) ? (string) $_REQUEST['password'] : '';
$password_old_format = (!STRIP) ? addslashes($password_old_format) : $password_old_format;
$password_new_format = '';
set_var($password_new_format, stripslashes($password_old_format), 'string');
if ($password == $password_new_format)
{
if (!function_exists('utf8_to_cp1252'))
{
global $phpbb_root_path, $phpEx;
include($phpbb_root_path . 'includes/utf/data/recode_basic.' . $phpEx);
}
// cp1252 is phpBB2's default encoding, characters outside ASCII range might work when converted into that encoding
if (md5($password_old_format) == $row['user_password'] || md5(utf8_to_cp1252($password_old_format)) == $row['user_password'])
{
// Update the password in the users table to the new format and remove user_pass_convert flag
$sql = 'UPDATE ' . USERS_TABLE . '
SET user_password = \'' . $db->sql_escape(md5($password_new_format)) . '\',
user_pass_convert = 0
WHERE user_id = ' . $row['user_id'];
$db->sql_query($sql);
$row['user_pass_convert'] = 0;
$row['user_password'] = md5($password_new_format);
}
else if (preg_match('/[\x80-\xFF]/', $password_old_format))
{
// Although we weren't able to convert this password we have to
// increase login attempt count to make sure this cannot be exploited
$sql = 'UPDATE ' . USERS_TABLE . '
SET user_login_attempts = user_login_attempts + 1
WHERE user_id = ' . $row['user_id'];
$db->sql_query($sql);
return array(
'status' => LOGIN_ERROR_PASSWORD_CONVERT,
'error_msg' => 'LOGIN_ERROR_PASSWORD_CONVERT',
'user_row' => $row,
);
}
}
}
// Check password ...
if (!$row['user_pass_convert'] && md5($password) == $row['user_password'])
{
if ($row['user_login_attempts'] != 0)
{
// Successful, reset login attempts (the user passed all stages)
$sql = 'UPDATE ' . USERS_TABLE . '
SET user_login_attempts = 0
WHERE user_id = ' . $row['user_id'];
$db->sql_query($sql);
}
// User inactive...
if ($row['user_type'] == USER_INACTIVE || $row['user_type'] == USER_IGNORE)
{
return array(
'status' => LOGIN_ERROR_ACTIVE,
'error_msg' => 'ACTIVE_ERROR',
'user_row' => $row,
);
}
// Successful login... set user_login_attempts to zero...
return array(
'status' => LOGIN_SUCCESS,
'error_msg' => false,
'user_row' => $row,
);
}
// Password incorrect - increase login attempts
$sql = 'UPDATE ' . USERS_TABLE . '
SET user_login_attempts = user_login_attempts + 1
WHERE user_id = ' . $row['user_id'];
$db->sql_query($sql);
// Give status about wrong password...
return array(
'status' => LOGIN_ERROR_PASSWORD,
'error_msg' => 'LOGIN_ERROR_PASSWORD',
'user_row' => $row,
);
}
?>
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