964 lines
No EOL
35 KiB
PHP
964 lines
No EOL
35 KiB
PHP
<?php
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/**
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* This file is concerned pretty entirely, as you see from its name, with
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* logging in and out members, and the validation of that.
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*
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* Simple Machines Forum (SMF)
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*
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* @package SMF
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* @author Simple Machines https://www.simplemachines.org
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* @copyright 2022 Simple Machines and individual contributors
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* @license https://www.simplemachines.org/about/smf/license.php BSD
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*
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* @version 2.1.3
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*/
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if (!defined('SMF'))
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die('No direct access...');
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/**
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* Ask them for their login information. (shows a page for the user to type
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* in their username and password.)
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* It caches the referring URL in $_SESSION['login_url'].
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* It is accessed from ?action=login.
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*
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* Uses Login template and language file with the login sub-template.
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*/
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function Login()
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{
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global $txt, $context, $scripturl, $user_info;
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// You are already logged in, go take a tour of the boards
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if (!empty($user_info['id']))
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{
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// This came from a valid hashed return url. Or something that knows our secrets...
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if (!empty($_REQUEST['return_hash']) && !empty($_REQUEST['return_to']) && hash_hmac('sha1', un_htmlspecialchars($_REQUEST['return_to']), get_auth_secret()) == $_REQUEST['return_hash'])
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redirectexit(un_htmlspecialchars($_REQUEST['return_to']));
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else
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redirectexit();
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}
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// We need to load the Login template/language file.
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loadLanguage('Login');
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loadTemplate('Login');
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$context['sub_template'] = 'login';
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/* This is true when:
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* We have a valid header indicating a JQXHR request. This is not sent during a cross domain request.
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* OR we have found:
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* 1. valid cors host
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* 2. A header indicating a SMF request
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* 3. The url has a ajax in either the GET or POST
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* These are not intended for security, but ensuring the request is intended for a JQXHR response.
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*/
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if (
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(
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!empty($_SERVER['HTTP_X_REQUESTED_WITH'])
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&& $_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest'
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)
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||
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(
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!empty($context['valid_cors_found'])
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&& !empty($_SERVER['HTTP_X_SMF_AJAX'])
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&& isset($_REQUEST['ajax'])
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)
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)
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{
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$context['from_ajax'] = true;
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$context['template_layers'] = array();
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}
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// Get the template ready.... not really much else to do.
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$context['page_title'] = $txt['login'];
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$context['default_username'] = &$_REQUEST['u'];
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$context['default_password'] = '';
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$context['never_expire'] = false;
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// Add the login chain to the link tree.
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$context['linktree'][] = array(
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'url' => $scripturl . '?action=login',
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'name' => $txt['login'],
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);
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// Set the login URL - will be used when the login process is done (but careful not to send us to an attachment).
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if (isset($_SESSION['old_url']) && strpos($_SESSION['old_url'], 'dlattach') === false && preg_match('~(board|topic)[=,]~', $_SESSION['old_url']) != 0)
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$_SESSION['login_url'] = $_SESSION['old_url'];
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// This came from a valid hashed return url. Or something that knows our secrets...
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elseif (!empty($_REQUEST['return_hash']) && !empty($_REQUEST['return_to']) && hash_hmac('sha1', un_htmlspecialchars($_REQUEST['return_to']), get_auth_secret()) == $_REQUEST['return_hash'])
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$_SESSION['login_url'] = un_htmlspecialchars($_REQUEST['return_to']);
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elseif (isset($_SESSION['login_url']) && strpos($_SESSION['login_url'], 'dlattach') !== false)
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unset($_SESSION['login_url']);
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// Create a one time token.
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createToken('login');
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}
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/**
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* Actually logs you in.
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* What it does:
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* - checks credentials and checks that login was successful.
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* - it employs protection against a specific IP or user trying to brute force
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* a login to an account.
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* - upgrades password encryption on login, if necessary.
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* - after successful login, redirects you to $_SESSION['login_url'].
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* - accessed from ?action=login2, by forms.
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* On error, uses the same templates Login() uses.
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*/
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function Login2()
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{
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global $txt, $scripturl, $user_info, $user_settings, $smcFunc;
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global $cookiename, $modSettings, $context, $sourcedir, $maintenance;
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// Check to ensure we're forcing SSL for authentication
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if (!empty($modSettings['force_ssl']) && empty($maintenance) && !httpsOn())
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fatal_lang_error('login_ssl_required', false);
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// Load cookie authentication stuff.
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require_once($sourcedir . '/Subs-Auth.php');
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/* This is true when:
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* We have a valid header indicating a JQXHR request. This is not sent during a cross domain request.
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* OR we have found:
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* 1. valid cors host
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* 2. A header indicating a SMF request
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* 3. The url has a ajax in either the GET or POST
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* These are not intended for security, but ensuring the request is intended for a JQXHR response.
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*/
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if (
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(
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!empty($_SERVER['HTTP_X_REQUESTED_WITH'])
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&& $_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest'
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)
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||
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(
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!empty($context['valid_cors_found'])
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&& !empty($_SERVER['HTTP_X_SMF_AJAX'])
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&& isset($_REQUEST['ajax'])
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)
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)
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{
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$context['from_ajax'] = true;
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$context['template_layers'] = array();
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}
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if (isset($_GET['sa']) && $_GET['sa'] == 'salt' && !$user_info['is_guest'])
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{
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// First check for 2.1 json-format cookie in $_COOKIE
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if (isset($_COOKIE[$cookiename]) && preg_match('~^{"0":\d+,"1":"[0-9a-f]*","2":\d+~', $_COOKIE[$cookiename]) === 1)
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list (,, $timeout) = $smcFunc['json_decode']($_COOKIE[$cookiename], true);
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// Try checking for 2.1 json-format cookie in $_SESSION
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elseif (isset($_SESSION['login_' . $cookiename]) && preg_match('~^{"0":\d+,"1":"[0-9a-f]*","2":\d+~', $_SESSION['login_' . $cookiename]) === 1)
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list (,, $timeout) = $smcFunc['json_decode']($_SESSION['login_' . $cookiename]);
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// Next, try checking for 2.0 serialized string cookie in $_COOKIE
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elseif (isset($_COOKIE[$cookiename]) && preg_match('~^a:[34]:\{i:0;i:\d+;i:1;s:(0|40):"([a-fA-F0-9]{40})?";i:2;[id]:\d+;~', $_COOKIE[$cookiename]) === 1)
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list (,, $timeout) = safe_unserialize($_COOKIE[$cookiename]);
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// Last, see if you need to fall back on checking for 2.0 serialized string cookie in $_SESSION
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elseif (isset($_SESSION['login_' . $cookiename]) && preg_match('~^a:[34]:\{i:0;i:\d+;i:1;s:(0|40):"([a-fA-F0-9]{40})?";i:2;[id]:\d+;~', $_SESSION['login_' . $cookiename]) === 1)
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list (,, $timeout) = safe_unserialize($_SESSION['login_' . $cookiename]);
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else
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{
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loadLanguage('Errors');
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trigger_error($txt['login_no_session_cookie'], E_USER_ERROR);
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}
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$user_settings['password_salt'] = bin2hex($smcFunc['random_bytes'](16));
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updateMemberData($user_info['id'], array('password_salt' => $user_settings['password_salt']));
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// Preserve the 2FA cookie?
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if (!empty($modSettings['tfa_mode']) && !empty($_COOKIE[$cookiename . '_tfa']))
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{
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list (,, $exp) = $smcFunc['json_decode']($_COOKIE[$cookiename . '_tfa'], true);
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setTFACookie((int) $exp - time(), $user_info['password_salt'], hash_salt($user_settings['tfa_backup'], $user_settings['password_salt']));
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}
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setLoginCookie((int) $timeout - time(), $user_info['id'], hash_salt($user_settings['passwd'], $user_settings['password_salt']));
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redirectexit('action=login2;sa=check;member=' . $user_info['id'], $context['server']['needs_login_fix']);
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}
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// Double check the cookie...
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elseif (isset($_GET['sa']) && $_GET['sa'] == 'check')
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{
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// Strike! You're outta there!
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if ($_GET['member'] != $user_info['id'])
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fatal_lang_error('login_cookie_error', false);
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$user_info['can_mod'] = allowedTo('access_mod_center') || (!$user_info['is_guest'] && ($user_info['mod_cache']['gq'] != '0=1' || $user_info['mod_cache']['bq'] != '0=1' || ($modSettings['postmod_active'] && !empty($user_info['mod_cache']['ap']))));
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// Some whitelisting for login_url...
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if (empty($_SESSION['login_url']))
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redirectexit(empty($user_settings['tfa_secret']) ? '' : 'action=logintfa');
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elseif (!empty($_SESSION['login_url']) && (strpos($_SESSION['login_url'], 'http://') === false && strpos($_SESSION['login_url'], 'https://') === false))
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{
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unset($_SESSION['login_url']);
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redirectexit(empty($user_settings['tfa_secret']) ? '' : 'action=logintfa');
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}
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elseif (!empty($user_settings['tfa_secret']))
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{
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redirectexit('action=logintfa');
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}
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else
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{
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// Best not to clutter the session data too much...
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$temp = $_SESSION['login_url'];
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unset($_SESSION['login_url']);
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redirectexit($temp);
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}
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}
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// Beyond this point you are assumed to be a guest trying to login.
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if (!$user_info['is_guest'])
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redirectexit();
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// Are you guessing with a script?
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checkSession();
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validateToken('login');
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spamProtection('login');
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// Set the login_url if it's not already set (but careful not to send us to an attachment).
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if ((empty($_SESSION['login_url']) && isset($_SESSION['old_url']) && strpos($_SESSION['old_url'], 'dlattach') === false && preg_match('~(board|topic)[=,]~', $_SESSION['old_url']) != 0) || (isset($_GET['quicklogin']) && isset($_SESSION['old_url']) && strpos($_SESSION['old_url'], 'login') === false))
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$_SESSION['login_url'] = $_SESSION['old_url'];
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// Been guessing a lot, haven't we?
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if (isset($_SESSION['failed_login']) && $_SESSION['failed_login'] >= $modSettings['failed_login_threshold'] * 3)
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fatal_lang_error('login_threshold_fail', 'login');
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// Set up the cookie length. (if it's invalid, just fall through and use the default.)
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if (isset($_POST['cookieneverexp']) || (!empty($_POST['cookielength']) && $_POST['cookielength'] == -1))
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$modSettings['cookieTime'] = 3153600;
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elseif (!empty($_POST['cookielength']) && ($_POST['cookielength'] >= 1 && $_POST['cookielength'] <= 3153600))
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$modSettings['cookieTime'] = (int) $_POST['cookielength'];
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loadLanguage('Login');
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// Load the template stuff.
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loadTemplate('Login');
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$context['sub_template'] = 'login';
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// Create a one time token.
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createToken('login');
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// Set up the default/fallback stuff.
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$context['default_username'] = isset($_POST['user']) ? preg_replace('~&#(\\d{1,7}|x[0-9a-fA-F]{1,6});~', '&#\\1;', $smcFunc['htmlspecialchars']($_POST['user'])) : '';
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$context['default_password'] = '';
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$context['never_expire'] = $modSettings['cookieTime'] <= 525600;
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$context['login_errors'] = array($txt['error_occured']);
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$context['page_title'] = $txt['login'];
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// Add the login chain to the link tree.
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$context['linktree'][] = array(
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'url' => $scripturl . '?action=login',
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'name' => $txt['login'],
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);
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// You forgot to type your username, dummy!
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if (!isset($_POST['user']) || $_POST['user'] == '')
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{
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$context['login_errors'] = array($txt['need_username']);
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return;
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}
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// Hmm... maybe 'admin' will login with no password. Uhh... NO!
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if (!isset($_POST['passwrd']) || $_POST['passwrd'] == '')
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{
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$context['login_errors'] = array($txt['no_password']);
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return;
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}
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// No funky symbols either.
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if (preg_match('~[<>&"\'=\\\]~', preg_replace('~(&#(\\d{1,7}|x[0-9a-fA-F]{1,6});)~', '', $_POST['user'])) != 0)
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{
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$context['login_errors'] = array($txt['error_invalid_characters_username']);
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return;
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}
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// And if it's too long, trim it back.
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if ($smcFunc['strlen']($_POST['user']) > 80)
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{
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$_POST['user'] = $smcFunc['substr']($_POST['user'], 0, 79);
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$context['default_username'] = preg_replace('~&#(\\d{1,7}|x[0-9a-fA-F]{1,6});~', '&#\\1;', $smcFunc['htmlspecialchars']($_POST['user']));
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}
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// Are we using any sort of integration to validate the login?
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if (in_array('retry', call_integration_hook('integrate_validate_login', array($_POST['user'], isset($_POST['passwrd']) ? $_POST['passwrd'] : null, $modSettings['cookieTime'])), true))
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{
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$context['login_errors'] = array($txt['incorrect_password']);
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return;
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}
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// Load the data up!
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$request = $smcFunc['db_query']('', '
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SELECT passwd, id_member, id_group, lngfile, is_activated, email_address, additional_groups, member_name, password_salt,
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passwd_flood, tfa_secret
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FROM {db_prefix}members
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WHERE ' . ($smcFunc['db_case_sensitive'] ? 'LOWER(member_name) = LOWER({string:user_name})' : 'member_name = {string:user_name}') . '
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LIMIT 1',
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array(
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'user_name' => $smcFunc['db_case_sensitive'] ? strtolower($_POST['user']) : $_POST['user'],
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)
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);
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// Probably mistyped or their email, try it as an email address. (member_name first, though!)
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if ($smcFunc['db_num_rows']($request) == 0 && strpos($_POST['user'], '@') !== false)
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{
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$smcFunc['db_free_result']($request);
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$request = $smcFunc['db_query']('', '
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SELECT passwd, id_member, id_group, lngfile, is_activated, email_address, additional_groups, member_name, password_salt,
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passwd_flood, tfa_secret
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FROM {db_prefix}members
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WHERE email_address = {string:user_name}
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LIMIT 1',
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array(
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'user_name' => $_POST['user'],
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)
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);
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}
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// Let them try again, it didn't match anything...
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if ($smcFunc['db_num_rows']($request) == 0)
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{
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$context['login_errors'] = array($txt['username_no_exist']);
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return;
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}
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$user_settings = $smcFunc['db_fetch_assoc']($request);
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$smcFunc['db_free_result']($request);
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// Bad password! Thought you could fool the database?!
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if (!hash_verify_password($user_settings['member_name'], un_htmlspecialchars($_POST['passwrd']), $user_settings['passwd']))
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{
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// Let's be cautious, no hacking please. thanx.
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validatePasswordFlood($user_settings['id_member'], $user_settings['member_name'], $user_settings['passwd_flood']);
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// Maybe we were too hasty... let's try some other authentication methods.
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$other_passwords = array();
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// None of the below cases will be used most of the time (because the salt is normally set.)
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if (!empty($modSettings['enable_password_conversion']) && $user_settings['password_salt'] == '')
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{
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// YaBB SE, Discus, MD5 (used a lot), SHA-1 (used some), SMF 1.0.x, IkonBoard, and none at all.
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$other_passwords[] = crypt($_POST['passwrd'], substr($_POST['passwrd'], 0, 2));
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$other_passwords[] = crypt($_POST['passwrd'], substr($user_settings['passwd'], 0, 2));
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$other_passwords[] = md5($_POST['passwrd']);
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$other_passwords[] = sha1($_POST['passwrd']);
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$other_passwords[] = md5_hmac($_POST['passwrd'], strtolower($user_settings['member_name']));
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$other_passwords[] = md5($_POST['passwrd'] . strtolower($user_settings['member_name']));
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$other_passwords[] = md5(md5($_POST['passwrd']));
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$other_passwords[] = $_POST['passwrd'];
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$other_passwords[] = crypt($_POST['passwrd'], $user_settings['passwd']);
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// This one is a strange one... MyPHP, crypt() on the MD5 hash.
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$other_passwords[] = crypt(md5($_POST['passwrd']), md5($_POST['passwrd']));
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// Snitz style - SHA-256. Technically, this is a downgrade, but most PHP configurations don't support sha256 anyway.
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if (strlen($user_settings['passwd']) == 64 && function_exists('mhash') && defined('MHASH_SHA256'))
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$other_passwords[] = bin2hex(mhash(MHASH_SHA256, $_POST['passwrd']));
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// phpBB3 users new hashing. We now support it as well ;).
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$other_passwords[] = phpBB3_password_check($_POST['passwrd'], $user_settings['passwd']);
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// APBoard 2 Login Method.
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$other_passwords[] = md5(crypt($_POST['passwrd'], 'CRYPT_MD5'));
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}
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// If the salt is set let's try some other options
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elseif (!empty($modSettings['enable_password_conversion']) && $user_settings['password_salt'] != '')
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{
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// PHPBB 3 check this function exists in PHP 5.5 or higher
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if (function_exists('password_verify'))
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$other_passwords[] = password_verify($_POST['passwrd'],$user_settings['password_salt']);
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// PHP-Fusion
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$other_passwords[] = hash_hmac('sha256', $_POST['passwrd'], $user_settings['password_salt']);
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// MyBB
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$other_passwords[] = md5(md5($user_settings['password_salt']) . md5($_POST['passwrd']));
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}
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// The hash should be 40 if it's SHA-1, so we're safe with more here too.
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elseif (!empty($modSettings['enable_password_conversion']) && strlen($user_settings['passwd']) == 32)
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{
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// vBulletin 3 style hashing? Let's welcome them with open arms \o/.
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$other_passwords[] = md5(md5($_POST['passwrd']) . stripslashes($user_settings['password_salt']));
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// Hmm.. p'raps it's Invision 2 style?
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$other_passwords[] = md5(md5($user_settings['password_salt']) . md5($_POST['passwrd']));
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// Some common md5 ones.
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$other_passwords[] = md5($user_settings['password_salt'] . $_POST['passwrd']);
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$other_passwords[] = md5($_POST['passwrd'] . $user_settings['password_salt']);
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}
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elseif (strlen($user_settings['passwd']) == 40)
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{
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// Maybe they are using a hash from before the password fix.
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// This is also valid for SMF 1.1 to 2.0 style of hashing, changed to bcrypt in SMF 2.1
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$other_passwords[] = sha1(strtolower($user_settings['member_name']) . un_htmlspecialchars($_POST['passwrd']));
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// BurningBoard3 style of hashing.
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if (!empty($modSettings['enable_password_conversion']))
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$other_passwords[] = sha1($user_settings['password_salt'] . sha1($user_settings['password_salt'] . sha1($_POST['passwrd'])));
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// PunBB
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$other_passwords[] = sha1($user_settings['password_salt'] . sha1($_POST['passwrd']));
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|
|
// Perhaps we converted to UTF-8 and have a valid password being hashed differently.
|
|
if ($context['character_set'] == 'UTF-8' && !empty($modSettings['previousCharacterSet']) && $modSettings['previousCharacterSet'] != 'utf8')
|
|
{
|
|
// Try iconv first, for no particular reason.
|
|
if (function_exists('iconv'))
|
|
$other_passwords['iconv'] = sha1(strtolower(iconv('UTF-8', $modSettings['previousCharacterSet'], $user_settings['member_name'])) . un_htmlspecialchars(iconv('UTF-8', $modSettings['previousCharacterSet'], $_POST['passwrd'])));
|
|
|
|
// Say it aint so, iconv failed!
|
|
if (empty($other_passwords['iconv']) && function_exists('mb_convert_encoding'))
|
|
$other_passwords[] = sha1(strtolower(mb_convert_encoding($user_settings['member_name'], 'UTF-8', $modSettings['previousCharacterSet'])) . un_htmlspecialchars(mb_convert_encoding($_POST['passwrd'], 'UTF-8', $modSettings['previousCharacterSet'])));
|
|
}
|
|
}
|
|
|
|
// SMF's sha1 function can give a funny result on Linux (Not our fault!). If we've now got the real one let the old one be valid!
|
|
if (stripos(PHP_OS, 'win') !== 0 && strlen($user_settings['passwd']) < hash_length())
|
|
{
|
|
require_once($sourcedir . '/Subs-Compat.php');
|
|
$other_passwords[] = sha1_smf(strtolower($user_settings['member_name']) . un_htmlspecialchars($_POST['passwrd']));
|
|
}
|
|
|
|
// Allows mods to easily extend the $other_passwords array
|
|
call_integration_hook('integrate_other_passwords', array(&$other_passwords));
|
|
|
|
// Whichever encryption it was using, let's make it use SMF's now ;).
|
|
if (in_array($user_settings['passwd'], $other_passwords))
|
|
{
|
|
$user_settings['passwd'] = hash_password($user_settings['member_name'], un_htmlspecialchars($_POST['passwrd']));
|
|
$user_settings['password_salt'] = bin2hex($smcFunc['random_bytes'](16));
|
|
|
|
// Update the password and set up the hash.
|
|
updateMemberData($user_settings['id_member'], array('passwd' => $user_settings['passwd'], 'password_salt' => $user_settings['password_salt'], 'passwd_flood' => ''));
|
|
}
|
|
// Okay, they for sure didn't enter the password!
|
|
else
|
|
{
|
|
// They've messed up again - keep a count to see if they need a hand.
|
|
$_SESSION['failed_login'] = isset($_SESSION['failed_login']) ? ($_SESSION['failed_login'] + 1) : 1;
|
|
|
|
// Hmm... don't remember it, do you? Here, try the password reminder ;).
|
|
if ($_SESSION['failed_login'] >= $modSettings['failed_login_threshold'])
|
|
redirectexit('action=reminder');
|
|
// We'll give you another chance...
|
|
else
|
|
{
|
|
// Log an error so we know that it didn't go well in the error log.
|
|
log_error($txt['incorrect_password'] . ' - <span class="remove">' . $user_settings['member_name'] . '</span>', 'user');
|
|
|
|
$context['login_errors'] = array($txt['incorrect_password']);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
elseif (!empty($user_settings['passwd_flood']))
|
|
{
|
|
// Let's be sure they weren't a little hacker.
|
|
validatePasswordFlood($user_settings['id_member'], $user_settings['member_name'], $user_settings['passwd_flood'], true);
|
|
|
|
// If we got here then we can reset the flood counter.
|
|
updateMemberData($user_settings['id_member'], array('passwd_flood' => ''));
|
|
}
|
|
|
|
// Correct password, but they've got no salt; fix it!
|
|
if (strlen($user_settings['password_salt']) < 32)
|
|
{
|
|
$user_settings['password_salt'] = bin2hex($smcFunc['random_bytes'](16));
|
|
updateMemberData($user_settings['id_member'], array('password_salt' => $user_settings['password_salt']));
|
|
}
|
|
|
|
// Check their activation status.
|
|
if (!checkActivation())
|
|
return;
|
|
|
|
DoLogin();
|
|
}
|
|
|
|
/**
|
|
* Allows the user to enter their Two-Factor Authentication code
|
|
*/
|
|
function LoginTFA()
|
|
{
|
|
global $sourcedir, $txt, $context, $user_info, $modSettings, $scripturl;
|
|
|
|
if (!$user_info['is_guest'] || empty($context['tfa_member']) || empty($modSettings['tfa_mode']))
|
|
fatal_lang_error('no_access', false);
|
|
|
|
loadLanguage('Profile');
|
|
require_once($sourcedir . '/Class-TOTP.php');
|
|
|
|
$member = $context['tfa_member'];
|
|
|
|
// Prevent replay attacks by limiting at least 2 minutes before they can log in again via 2FA
|
|
if (time() - $member['last_login'] < 120)
|
|
fatal_lang_error('tfa_wait', false);
|
|
|
|
$totp = new \TOTP\Auth($member['tfa_secret']);
|
|
$totp->setRange(1);
|
|
|
|
/* This is true when:
|
|
* We have a valid header indicating a JQXHR request. This is not sent during a cross domain request.
|
|
* OR we have found:
|
|
* 1. valid cors host
|
|
* 2. A header indicating a SMF request
|
|
* 3. The url has a ajax in either the GET or POST
|
|
* These are not intended for security, but ensuring the request is intended for a JQXHR response.
|
|
*/
|
|
if (
|
|
(
|
|
!empty($_SERVER['HTTP_X_REQUESTED_WITH'])
|
|
&& $_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest'
|
|
)
|
|
||
|
|
(
|
|
!empty($context['valid_cors_found'])
|
|
&& !empty($_SERVER['HTTP_X_SMF_AJAX'])
|
|
&& isset($_REQUEST['ajax'])
|
|
)
|
|
)
|
|
{
|
|
$context['from_ajax'] = true;
|
|
$context['template_layers'] = array();
|
|
}
|
|
|
|
if (!empty($_POST['tfa_code']) && empty($_POST['tfa_backup']))
|
|
{
|
|
// Check to ensure we're forcing SSL for authentication
|
|
if (!empty($modSettings['force_ssl']) && empty($maintenance) && !httpsOn())
|
|
fatal_lang_error('login_ssl_required', false);
|
|
|
|
$code = $_POST['tfa_code'];
|
|
|
|
if (strlen($code) == $totp->getCodeLength() && $totp->validateCode($code))
|
|
{
|
|
updateMemberData($member['id_member'], array('last_login' => time()));
|
|
|
|
setTFACookie(3153600, $member['id_member'], hash_salt($member['tfa_backup'], $member['password_salt']));
|
|
redirectexit();
|
|
}
|
|
else
|
|
{
|
|
validatePasswordFlood($member['id_member'], $member['member_name'], $member['passwd_flood'], false, true);
|
|
|
|
$context['tfa_error'] = true;
|
|
$context['tfa_value'] = $_POST['tfa_code'];
|
|
}
|
|
}
|
|
elseif (!empty($_POST['tfa_backup']))
|
|
{
|
|
// Check to ensure we're forcing SSL for authentication
|
|
if (!empty($modSettings['force_ssl']) && empty($maintenance) && !httpsOn())
|
|
fatal_lang_error('login_ssl_required', false);
|
|
|
|
$backup = $_POST['tfa_backup'];
|
|
|
|
if (hash_verify_password($member['member_name'], $backup, $member['tfa_backup']))
|
|
{
|
|
// Get rid of their current TFA settings
|
|
updateMemberData($member['id_member'], array(
|
|
'tfa_secret' => '',
|
|
'tfa_backup' => '',
|
|
'last_login' => time(),
|
|
));
|
|
setTFACookie(3153600, $member['id_member'], hash_salt($member['tfa_backup'], $member['password_salt']));
|
|
redirectexit('action=profile;area=tfasetup;backup');
|
|
}
|
|
else
|
|
{
|
|
validatePasswordFlood($member['id_member'], $member['member_name'], $member['passwd_flood'], false, true);
|
|
|
|
$context['tfa_backup_error'] = true;
|
|
$context['tfa_value'] = $_POST['tfa_code'];
|
|
$context['tfa_backup_value'] = $_POST['tfa_backup'];
|
|
}
|
|
}
|
|
|
|
loadTemplate('Login');
|
|
$context['sub_template'] = 'login_tfa';
|
|
$context['page_title'] = $txt['login'];
|
|
$context['tfa_url'] = $scripturl . '?action=logintfa';
|
|
}
|
|
|
|
/**
|
|
* Check activation status of the current user.
|
|
*/
|
|
function checkActivation()
|
|
{
|
|
global $context, $txt, $scripturl, $user_settings, $modSettings;
|
|
|
|
if (!isset($context['login_errors']))
|
|
$context['login_errors'] = array();
|
|
|
|
// What is the true activation status of this account?
|
|
$activation_status = $user_settings['is_activated'] > 10 ? $user_settings['is_activated'] - 10 : $user_settings['is_activated'];
|
|
|
|
// Check if the account is activated - COPPA first...
|
|
if ($activation_status == 5)
|
|
{
|
|
$context['login_errors'][] = $txt['coppa_no_consent'] . ' <a href="' . $scripturl . '?action=coppa;member=' . $user_settings['id_member'] . '">' . $txt['coppa_need_more_details'] . '</a>';
|
|
return false;
|
|
}
|
|
// Awaiting approval still?
|
|
elseif ($activation_status == 3)
|
|
fatal_lang_error('still_awaiting_approval', 'user');
|
|
// Awaiting deletion, changed their mind?
|
|
elseif ($activation_status == 4)
|
|
{
|
|
if (isset($_REQUEST['undelete']))
|
|
{
|
|
updateMemberData($user_settings['id_member'], array('is_activated' => 1));
|
|
updateSettings(array('unapprovedMembers' => ($modSettings['unapprovedMembers'] > 0 ? $modSettings['unapprovedMembers'] - 1 : 0)));
|
|
}
|
|
else
|
|
{
|
|
$context['disable_login_hashing'] = true;
|
|
$context['login_errors'][] = $txt['awaiting_delete_account'];
|
|
$context['login_show_undelete'] = true;
|
|
return false;
|
|
}
|
|
}
|
|
// Standard activation?
|
|
elseif ($activation_status != 1)
|
|
{
|
|
log_error($txt['activate_not_completed1'] . ' - <span class="remove">' . $user_settings['member_name'] . '</span>', 'user');
|
|
|
|
$context['login_errors'][] = $txt['activate_not_completed1'] . ' <a href="' . $scripturl . '?action=activate;sa=resend;u=' . $user_settings['id_member'] . '">' . $txt['activate_not_completed2'] . '</a>';
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Perform the logging in. (set cookie, call hooks, etc)
|
|
*/
|
|
function DoLogin()
|
|
{
|
|
global $user_info, $user_settings, $smcFunc;
|
|
global $maintenance, $modSettings, $context, $sourcedir;
|
|
|
|
// Load cookie authentication stuff.
|
|
require_once($sourcedir . '/Subs-Auth.php');
|
|
|
|
// Call login integration functions.
|
|
call_integration_hook('integrate_login', array($user_settings['member_name'], null, $modSettings['cookieTime']));
|
|
|
|
// Get ready to set the cookie...
|
|
$user_info['id'] = $user_settings['id_member'];
|
|
|
|
// Bam! Cookie set. A session too, just in case.
|
|
setLoginCookie(60 * $modSettings['cookieTime'], $user_settings['id_member'], hash_salt($user_settings['passwd'], $user_settings['password_salt']));
|
|
|
|
// Reset the login threshold.
|
|
if (isset($_SESSION['failed_login']))
|
|
unset($_SESSION['failed_login']);
|
|
|
|
$user_info['is_guest'] = false;
|
|
$user_settings['additional_groups'] = explode(',', $user_settings['additional_groups']);
|
|
$user_info['is_admin'] = $user_settings['id_group'] == 1 || in_array(1, $user_settings['additional_groups']);
|
|
|
|
// Are you banned?
|
|
is_not_banned(true);
|
|
|
|
// Don't stick the language or theme after this point.
|
|
unset($_SESSION['language'], $_SESSION['id_theme']);
|
|
|
|
// First login?
|
|
$request = $smcFunc['db_query']('', '
|
|
SELECT last_login
|
|
FROM {db_prefix}members
|
|
WHERE id_member = {int:id_member}
|
|
AND last_login = 0',
|
|
array(
|
|
'id_member' => $user_info['id'],
|
|
)
|
|
);
|
|
if ($smcFunc['db_num_rows']($request) == 1)
|
|
$_SESSION['first_login'] = true;
|
|
else
|
|
unset($_SESSION['first_login']);
|
|
$smcFunc['db_free_result']($request);
|
|
|
|
// You've logged in, haven't you?
|
|
$update = array('member_ip' => $user_info['ip'], 'member_ip2' => $_SERVER['BAN_CHECK_IP']);
|
|
if (empty($user_settings['tfa_secret']))
|
|
$update['last_login'] = time();
|
|
updateMemberData($user_info['id'], $update);
|
|
|
|
// Get rid of the online entry for that old guest....
|
|
$smcFunc['db_query']('', '
|
|
DELETE FROM {db_prefix}log_online
|
|
WHERE session = {string:session}',
|
|
array(
|
|
'session' => 'ip' . $user_info['ip'],
|
|
)
|
|
);
|
|
$_SESSION['log_time'] = 0;
|
|
|
|
// Log this entry, only if we have it enabled.
|
|
if (!empty($modSettings['loginHistoryDays']))
|
|
$smcFunc['db_insert']('insert',
|
|
'{db_prefix}member_logins',
|
|
array(
|
|
'id_member' => 'int', 'time' => 'int', 'ip' => 'inet', 'ip2' => 'inet',
|
|
),
|
|
array(
|
|
$user_info['id'], time(), $user_info['ip'], $user_info['ip2']
|
|
),
|
|
array(
|
|
'id_member', 'time'
|
|
)
|
|
);
|
|
|
|
// Just log you back out if it's in maintenance mode and you AREN'T an admin.
|
|
if (empty($maintenance) || allowedTo('admin_forum'))
|
|
redirectexit('action=login2;sa=check;member=' . $user_info['id'], $context['server']['needs_login_fix']);
|
|
else
|
|
redirectexit('action=logout;' . $context['session_var'] . '=' . $context['session_id'], $context['server']['needs_login_fix']);
|
|
}
|
|
|
|
/**
|
|
* Logs the current user out of their account.
|
|
* It requires that the session hash is sent as well, to prevent automatic logouts by images or javascript.
|
|
* It redirects back to $_SESSION['logout_url'], if it exists.
|
|
* It is accessed via ?action=logout;session_var=...
|
|
*
|
|
* @param bool $internal If true, it doesn't check the session
|
|
* @param bool $redirect Whether or not to redirect the user after they log out
|
|
*/
|
|
function Logout($internal = false, $redirect = true)
|
|
{
|
|
global $sourcedir, $user_info, $user_settings, $context, $smcFunc, $cookiename, $modSettings;
|
|
|
|
// They decided to cancel a logout?
|
|
if (!$internal && isset($_POST['cancel']) && isset($_GET[$context['session_var']]))
|
|
redirectexit(!empty($_SESSION['logout_return']) ? $_SESSION['logout_return'] : '');
|
|
// Prompt to logout?
|
|
elseif (!$internal && !isset($_GET[$context['session_var']]))
|
|
{
|
|
loadLanguage('Login');
|
|
loadTemplate('Login');
|
|
$context['sub_template'] = 'logout';
|
|
|
|
// This came from a valid hashed return url. Or something that knows our secrets...
|
|
if (!empty($_REQUEST['return_hash']) && !empty($_REQUEST['return_to']) && hash_hmac('sha1', un_htmlspecialchars($_REQUEST['return_to']), get_auth_secret()) == $_REQUEST['return_hash'])
|
|
{
|
|
$_SESSION['logout_url'] = un_htmlspecialchars($_REQUEST['return_to']);
|
|
$_SESSION['logout_return'] = $_SESSION['logout_url'];
|
|
}
|
|
// Setup the return address.
|
|
elseif (isset($_SESSION['old_url']))
|
|
$_SESSION['logout_return'] = $_SESSION['old_url'];
|
|
|
|
// Don't go any further.
|
|
return;
|
|
}
|
|
// Make sure they aren't being auto-logged out.
|
|
elseif (!$internal && isset($_GET[$context['session_var']]))
|
|
checkSession('get');
|
|
|
|
require_once($sourcedir . '/Subs-Auth.php');
|
|
|
|
if (isset($_SESSION['pack_ftp']))
|
|
$_SESSION['pack_ftp'] = null;
|
|
|
|
// It won't be first login anymore.
|
|
unset($_SESSION['first_login']);
|
|
|
|
// Just ensure they aren't a guest!
|
|
if (!$user_info['is_guest'])
|
|
{
|
|
// Pass the logout information to integrations.
|
|
call_integration_hook('integrate_logout', array($user_settings['member_name']));
|
|
|
|
// If you log out, you aren't online anymore :P.
|
|
$smcFunc['db_query']('', '
|
|
DELETE FROM {db_prefix}log_online
|
|
WHERE id_member = {int:current_member}',
|
|
array(
|
|
'current_member' => $user_info['id'],
|
|
)
|
|
);
|
|
}
|
|
|
|
$_SESSION['log_time'] = 0;
|
|
|
|
// Empty the cookie! (set it in the past, and for id_member = 0)
|
|
setLoginCookie(-3600, 0);
|
|
|
|
// And some other housekeeping while we're at it.
|
|
$salt = bin2hex($smcFunc['random_bytes'](16));
|
|
if (!empty($user_info['id']))
|
|
updateMemberData($user_info['id'], array('password_salt' => $salt));
|
|
|
|
if (!empty($modSettings['tfa_mode']) && !empty($user_info['id']) && !empty($_COOKIE[$cookiename . '_tfa']))
|
|
{
|
|
list (,, $exp) = $smcFunc['json_decode']($_COOKIE[$cookiename . '_tfa'], true);
|
|
setTFACookie((int) $exp - time(), $salt, hash_salt($user_settings['tfa_backup'], $salt));
|
|
}
|
|
|
|
session_destroy();
|
|
|
|
// Off to the merry board index we go!
|
|
if ($redirect)
|
|
{
|
|
if (empty($_SESSION['logout_url']))
|
|
redirectexit('', $context['server']['needs_login_fix']);
|
|
elseif (!empty($_SESSION['logout_url']) && (strpos($_SESSION['logout_url'], 'http://') === false && strpos($_SESSION['logout_url'], 'https://') === false))
|
|
{
|
|
unset ($_SESSION['logout_url']);
|
|
redirectexit();
|
|
}
|
|
else
|
|
{
|
|
$temp = $_SESSION['logout_url'];
|
|
unset($_SESSION['logout_url']);
|
|
|
|
redirectexit($temp, $context['server']['needs_login_fix']);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* MD5 Encryption used for older passwords. (SMF 1.0.x/YaBB SE 1.5.x hashing)
|
|
*
|
|
* @param string $data The data
|
|
* @param string $key The key
|
|
* @return string The HMAC MD5 of data with key
|
|
*/
|
|
function md5_hmac($data, $key)
|
|
{
|
|
$key = str_pad(strlen($key) <= 64 ? $key : pack('H*', md5($key)), 64, chr(0x00));
|
|
return md5(($key ^ str_repeat(chr(0x5c), 64)) . pack('H*', md5(($key ^ str_repeat(chr(0x36), 64)) . $data)));
|
|
}
|
|
|
|
/**
|
|
* Custom encryption for phpBB3 based passwords.
|
|
*
|
|
* @param string $passwd The raw (unhashed) password
|
|
* @param string $passwd_hash The hashed password
|
|
* @return string The hashed version of $passwd
|
|
*/
|
|
function phpBB3_password_check($passwd, $passwd_hash)
|
|
{
|
|
// Too long or too short?
|
|
if (strlen($passwd_hash) != 34)
|
|
return;
|
|
|
|
// Range of characters allowed.
|
|
$range = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
|
|
|
|
// Tests
|
|
$strpos = strpos($range, $passwd_hash[3]);
|
|
$count = 1 << $strpos;
|
|
$salt = substr($passwd_hash, 4, 8);
|
|
|
|
$hash = md5($salt . $passwd, true);
|
|
for (; $count != 0; --$count)
|
|
$hash = md5($hash . $passwd, true);
|
|
|
|
$output = substr($passwd_hash, 0, 12);
|
|
$i = 0;
|
|
while ($i < 16)
|
|
{
|
|
$value = ord($hash[$i++]);
|
|
$output .= $range[$value & 0x3f];
|
|
|
|
if ($i < 16)
|
|
$value |= ord($hash[$i]) << 8;
|
|
|
|
$output .= $range[($value >> 6) & 0x3f];
|
|
|
|
if ($i++ >= 16)
|
|
break;
|
|
|
|
if ($i < 16)
|
|
$value |= ord($hash[$i]) << 16;
|
|
|
|
$output .= $range[($value >> 12) & 0x3f];
|
|
|
|
if ($i++ >= 16)
|
|
break;
|
|
|
|
$output .= $range[($value >> 18) & 0x3f];
|
|
}
|
|
|
|
// Return now.
|
|
return $output;
|
|
}
|
|
|
|
/**
|
|
* This protects against brute force attacks on a member's password.
|
|
* Importantly, even if the password was right we DON'T TELL THEM!
|
|
*
|
|
* @param int $id_member The ID of the member
|
|
* @param string $member_name The name of the member.
|
|
* @param bool|string $password_flood_value False if we don't have a flood value, otherwise a string with a timestamp and number of tries separated by a |
|
|
* @param bool $was_correct Whether or not the password was correct
|
|
* @param bool $tfa Whether we're validating for two-factor authentication
|
|
*/
|
|
function validatePasswordFlood($id_member, $member_name, $password_flood_value = false, $was_correct = false, $tfa = false)
|
|
{
|
|
global $cookiename, $sourcedir;
|
|
|
|
// As this is only brute protection, we allow 5 attempts every 10 seconds.
|
|
|
|
// Destroy any session or cookie data about this member, as they validated wrong.
|
|
// Only if they're not validating for 2FA
|
|
if (!$tfa)
|
|
{
|
|
require_once($sourcedir . '/Subs-Auth.php');
|
|
setLoginCookie(-3600, 0);
|
|
|
|
if (isset($_SESSION['login_' . $cookiename]))
|
|
unset($_SESSION['login_' . $cookiename]);
|
|
}
|
|
|
|
// We need a member!
|
|
if (!$id_member)
|
|
{
|
|
// Redirect back!
|
|
redirectexit();
|
|
|
|
// Probably not needed, but still make sure...
|
|
fatal_lang_error('no_access', false);
|
|
}
|
|
|
|
// Right, have we got a flood value?
|
|
if ($password_flood_value !== false)
|
|
@list ($time_stamp, $number_tries) = explode('|', $password_flood_value);
|
|
|
|
// Timestamp or number of tries invalid?
|
|
if (empty($number_tries) || empty($time_stamp))
|
|
{
|
|
$number_tries = 0;
|
|
$time_stamp = time();
|
|
}
|
|
|
|
// They've failed logging in already
|
|
if (!empty($number_tries))
|
|
{
|
|
// Give them less chances if they failed before
|
|
$number_tries = $time_stamp < time() - 20 ? 2 : $number_tries;
|
|
|
|
// They are trying too fast, make them wait longer
|
|
if ($time_stamp < time() - 10)
|
|
$time_stamp = time();
|
|
}
|
|
|
|
$number_tries++;
|
|
|
|
// Broken the law?
|
|
if ($number_tries > 5)
|
|
fatal_lang_error('login_threshold_brute_fail', 'login', [$member_name]);
|
|
|
|
// Otherwise set the members data. If they correct on their first attempt then we actually clear it, otherwise we set it!
|
|
updateMemberData($id_member, array('passwd_flood' => $was_correct && $number_tries == 1 ? '' : $time_stamp . '|' . $number_tries));
|
|
|
|
}
|
|
|
|
?>
|