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login.php
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login.php
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<?php
/***************************************************************************
* login.php
* -------------------
* begin : Saturday, Feb 13, 2001
* copyright : (C) 2001 The phpBB Group
* email : [email protected]
*
* $Id: login.php,v 1.47.2.20 2005/10/30 15:17:13 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
{
$sid = '';
}
//
// CBACK CrackerTracker Visual Login Confirmation
// visual confirmation code Generator taken from phpBB (c) phpBB Group
//
if ( isset($HTTP_GET_VARS['mode']) || isset($HTTP_POST_VARS['mode']) )
{
$mode = ( isset($HTTP_GET_VARS['mode']) ) ? $HTTP_GET_VARS['mode'] : $HTTP_POST_VARS['mode'];
$mode = htmlspecialchars($mode);
if ( $mode == 'confirm' )
{
if ( $userdata['session_logged_in'] )
{
exit;
}
include($phpbb_root_path . 'ctracker/ct_confirm.'.$phpEx);
exit;
}
}
//
// Now we check if the User is trying to Log in if he already has used one attempt or not
// if not we disable the Visual Confirmation Code and with this we allow a normal login without any Confirmation
// if the User tried to log in once we just continue with the normal Script and then we show the Visible Code every time the user
// tries to log in before checking Password or anything.
// Well OK its more DB gaming but many users want comfort AND security so let's do it ;-)
//
if(!empty($HTTP_POST_VARS['username']) && $ctracker_config['loginfeature'] == 1)
{
$secure_username = '';
$secure_username = isset($HTTP_POST_VARS['username']) ? phpbb_clean_username($HTTP_POST_VARS['username']) : '';
$sql = "SELECT ct_logintry FROM " . USERS_TABLE . " WHERE username = '" . str_replace("\\'", "''", $secure_username) . "'";
if ( !($result = $db->sql_query($sql)) )
{
message_die(GENERAL_ERROR, 'Error in obtaining userdata', '', __LINE__, __FILE__, $sql);
}
if( $row = $db->sql_fetchrow($result) )
{
if($row['ct_logintry'] == 0)
{
$ctracker_config['loginfeature'] = 0;
}
}
}
else
{
$ctracker_config['loginfeature'] = 0;
}
if ( $ctracker_config['loginfeature'] == 1 && !$userdata['session_logged_in'] && !empty($HTTP_POST_VARS['confirm_id']) && !empty($HTTP_POST_VARS['confirm_code']))
{
$confirm_id = htmlspecialchars($HTTP_POST_VARS['confirm_id']); if (!preg_match('/^[A-Za-z0-9]+$/', $confirm_id))
{
$confirm_id = '';
}
$sql = 'SELECT code
FROM ' . CTVISKEY . "
WHERE confirm_id = '$confirm_id'
AND session_id = '" . $userdata['session_id'] . "'";
if (!($result = $db->sql_query($sql)))
{
message_die(GENERAL_ERROR, 'Could not obtain confirmation code', __LINE__, __FILE__, $sql);
}
if ($row = $db->sql_fetchrow($result))
{
if ($row['code'] != $HTTP_POST_VARS['confirm_code'])
{
message_die(GENERAL_MESSAGE, $lang['ct_forum_sl1']);
}
else
{
$sql = 'DELETE FROM ' . CTVISKEY . "
WHERE confirm_id = '$confirm_id'
AND session_id = '" . $userdata['session_id'] . "'";
if (!$db->sql_query($sql))
{
message_die(GENERAL_ERROR, 'Could not delete confirmation code', __LINE__, __FILE__, $sql);
}
}
}
else
{
message_die(GENERAL_MESSAGE, $lang['ct_forum_sl1']);
}
$db->sql_freeresult($result);
}
$vcheck_need = FALSE;
$vcheck_login = TRUE;
if($ctracker_config['loginfeature'] == 1 )
{
$vcheck_need = TRUE;
$vcheck_login = FALSE;
}
if (($vcheck_need = FALSE || $userdata['session_logged_in']) or (isset($HTTP_GET_VARS['logout']) || !empty($HTTP_POST_VARS['confirm_id']) && !empty($HTTP_POST_VARS['confirm_code'])))
{
$vcheck_login = TRUE;
}
if(( $vcheck_login == TRUE ) and( isset($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);
$db->sql_query('UPDATE ' . USERS_TABLE . ' SET ct_logintry = 0 WHERE user_id = ' . $row['user_id']);
// 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);
}
if ($row['user_id'] != ANONYMOUS)
{
$sql = 'UPDATE ' . USERS_TABLE . '
SET ct_logintry = 1
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"))
{
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"))
{
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 = '';
//
// CBACK CrackerTracker Login Confirmation
// Confirmation Generator Taken from phpBB (C) phpBB Group
//
$confirm_image = '';
if( $ctracker_config['loginfeature'] == 1 && !$userdata['session_logged_in'])
{
$sql = 'SELECT session_id
FROM ' . SESSIONS_TABLE;
if (!($result = $db->sql_query($sql)))
{
message_die(GENERAL_ERROR, 'Could not select session data', '', __LINE__, __FILE__, $sql);
}
if ($row = $db->sql_fetchrow($result))
{
$confirm_sql = '';
do
{
$confirm_sql .= (($confirm_sql != '') ? ', ' : '') . "'" . $row['session_id'] . "'";
}
while ($row = $db->sql_fetchrow($result));
$sql = 'DELETE FROM ' . CTVISKEY . "
WHERE session_id NOT IN ($confirm_sql)";
if (!$db->sql_query($sql))
{
message_die(GENERAL_ERROR, 'Could not delete stale confirm data', '', __LINE__, __FILE__, $sql);
}
}
$db->sql_freeresult($result);
$confirm_chars = array('A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '1', '2', '3', '4', '5', '6', '7', '8', '9');
list($usec, $sec) = explode(' ', microtime());
mt_srand($sec * $usec);
$max_chars = count($confirm_chars) - 1;
$code = '';
for ($i = 0; $i < 6; $i++)
{
$code .= $confirm_chars[mt_rand(0, $max_chars)];
}
$confirm_id = md5(uniqid($user_ip));
$sql = 'INSERT INTO ' . CTVISKEY . " (confirm_id, session_id, code)
VALUES ('$confirm_id', '". $userdata['session_id'] . "', '$code')";
if (!$db->sql_query($sql))
{
message_die(GENERAL_ERROR, 'Could not insert new confirm code information', '', __LINE__, __FILE__, $sql);
}
unset($code);
$confirm_image = (@extension_loaded('zlib')) ? '<img src="' . append_sid("login.$phpEx?mode=confirm&id=$confirm_id") . '" alt="" title="" />' : '<img src="' . append_sid("login.$phpEx?mode=confirm&id=$confirm_id&c=1") . '" alt="" title="" /><img src="' . append_sid("login.$phpEx?mode=confirm&id=$confirm_id&c=2") . '" alt="" title="" /><img src="' . append_sid("login.$phpEx?mode=confirm&id=$confirm_id&c=3") . '" alt="" title="" /><img src="' . append_sid("login.$phpEx?mode=confirm&id=$confirm_id&c=4") . '" alt="" title="" /><img src="' . append_sid("login.$phpEx?mode=confirm&id=$confirm_id&c=5") . '" alt="" title="" /><img src="' . append_sid("login.$phpEx?mode=confirm&id=$confirm_id&c=6") . '" alt="" title="" />';
$hidden_form_fields .= '<input type="hidden" name="confirm_id" value="' . $confirm_id . '" />';
$template->assign_block_vars('switch_confirm', array());
}
if( isset($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'],
'CONFIRM_IMG' => $confirm_image,
'L_CONFIRM_CODE' => $lang['ct_forum_slo'],
'U_SEND_PASSWORD' => append_sid("profile.$phpEx?mode=sendpassword"),
'S_HIDDEN_FIELDS' => $s_hidden_fields . $hidden_form_fields)
);
$template->pparse('body');
include($phpbb_root_path . 'includes/page_tail.'.$phpEx);
}
else
{
redirect(append_sid("index.$phpEx", true));
}
}
?>