LogInOut.php 27 KB

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  1. <?php
  2. /**
  3. * This file is concerned pretty entirely, as you see from its name, with
  4. * logging in and out members, and the validation of that.
  5. *
  6. * Simple Machines Forum (SMF)
  7. *
  8. * @package SMF
  9. * @author Simple Machines http://www.simplemachines.org
  10. * @copyright 2012 Simple Machines Forum contributors
  11. * @license http://www.simplemachines.org/about/smf/license.php BSD
  12. *
  13. * @version 2.1 Alpha 1
  14. */
  15. if (!defined('SMF'))
  16. die('Hacking attempt...');
  17. /**
  18. * Ask them for their login information. (shows a page for the user to type
  19. * in their username and password.)
  20. * It caches the referring URL in $_SESSION['login_url'].
  21. * It is accessed from ?action=login.
  22. * @uses Login template and language file with the login sub-template.
  23. * @uses the protocol_login sub-template in the Wireless template,
  24. * if you are using a wireless device
  25. */
  26. function Login()
  27. {
  28. global $txt, $context, $scripturl, $user_info;
  29. // You are already logged in, go take a tour of the boards
  30. if (!empty($user_info['id']))
  31. redirectexit();
  32. // In wireless? If so, use the correct sub template.
  33. if (WIRELESS)
  34. $context['sub_template'] = WIRELESS_PROTOCOL . '_login';
  35. // Otherwise, we need to load the Login template/language file.
  36. else
  37. {
  38. loadLanguage('Login');
  39. loadTemplate('Login');
  40. $context['sub_template'] = 'login';
  41. }
  42. // Get the template ready.... not really much else to do.
  43. $context['page_title'] = $txt['login'];
  44. $context['default_username'] = &$_REQUEST['u'];
  45. $context['default_password'] = '';
  46. $context['never_expire'] = false;
  47. // Add the login chain to the link tree.
  48. $context['linktree'][] = array(
  49. 'url' => $scripturl . '?action=login',
  50. 'name' => $txt['login'],
  51. );
  52. // Set the login URL - will be used when the login process is done (but careful not to send us to an attachment).
  53. if (isset($_SESSION['old_url']) && strpos($_SESSION['old_url'], 'dlattach') === false && preg_match('~(board|topic)[=,]~', $_SESSION['old_url']) != 0)
  54. $_SESSION['login_url'] = $_SESSION['old_url'];
  55. else
  56. unset($_SESSION['login_url']);
  57. // Create a one time token.
  58. createToken('login');
  59. }
  60. /**
  61. * Actually logs you in.
  62. * What it does:
  63. * - checks credentials and checks that login was successful.
  64. * - it employs protection against a specific IP or user trying to brute force
  65. * a login to an account.
  66. * - upgrades password encryption on login, if necessary.
  67. * - after successful login, redirects you to $_SESSION['login_url'].
  68. * - accessed from ?action=login2, by forms.
  69. * On error, uses the same templates Login() uses.
  70. */
  71. function Login2()
  72. {
  73. global $txt, $scripturl, $user_info, $user_settings, $smcFunc;
  74. global $cookiename, $maintenance, $modSettings, $context, $sc, $sourcedir;
  75. // Load cookie authentication stuff.
  76. require_once($sourcedir . '/Subs-Auth.php');
  77. if (isset($_GET['sa']) && $_GET['sa'] == 'salt' && !$user_info['is_guest'])
  78. {
  79. if (isset($_COOKIE[$cookiename]) && preg_match('~^a:[34]:\{i:0;(i:\d{1,6}|s:[1-8]:"\d{1,8}");i:1;s:(0|40):"([a-fA-F0-9]{40})?";i:2;[id]:\d{1,14};(i:3;i:\d;)?\}$~', $_COOKIE[$cookiename]) === 1)
  80. list (, , $timeout) = @unserialize($_COOKIE[$cookiename]);
  81. elseif (isset($_SESSION['login_' . $cookiename]))
  82. list (, , $timeout) = @unserialize($_SESSION['login_' . $cookiename]);
  83. else
  84. trigger_error('Login2(): Cannot be logged in without a session or cookie', E_USER_ERROR);
  85. $user_settings['password_salt'] = substr(md5(mt_rand()), 0, 4);
  86. updateMemberData($user_info['id'], array('password_salt' => $user_settings['password_salt']));
  87. setLoginCookie($timeout - time(), $user_info['id'], sha1($user_settings['passwd'] . $user_settings['password_salt']));
  88. redirectexit('action=login2;sa=check;member=' . $user_info['id'], $context['server']['needs_login_fix']);
  89. }
  90. // Double check the cookie...
  91. elseif (isset($_GET['sa']) && $_GET['sa'] == 'check')
  92. {
  93. // Strike! You're outta there!
  94. if ($_GET['member'] != $user_info['id'])
  95. fatal_lang_error('login_cookie_error', false);
  96. $user_info['can_mod'] = allowedTo('access_mod_center') || (!$user_info['is_guest'] && ($user_info['mod_cache']['gq'] != '0=1' || $user_info['mod_cache']['bq'] != '0=1' || ($modSettings['postmod_active'] && !empty($user_info['mod_cache']['ap']))));
  97. if ($user_info['can_mod'] && isset($user_settings['openid_uri']) && empty($user_settings['openid_uri']))
  98. {
  99. $_SESSION['moderate_time'] = time();
  100. unset($_SESSION['just_registered']);
  101. }
  102. // Some whitelisting for login_url...
  103. if (empty($_SESSION['login_url']))
  104. redirectexit();
  105. elseif (!empty($_SESSION['login_url']) && (strpos('http://', $_SESSION['login_url']) === false && strpos('https://', $_SESSION['login_url']) === false))
  106. {
  107. unset ($_SESSION['login_url']);
  108. redirectexit();
  109. }
  110. else
  111. {
  112. // Best not to clutter the session data too much...
  113. $temp = $_SESSION['login_url'];
  114. unset($_SESSION['login_url']);
  115. redirectexit($temp);
  116. }
  117. }
  118. // Beyond this point you are assumed to be a guest trying to login.
  119. if (!$user_info['is_guest'])
  120. redirectexit();
  121. // Are you guessing with a script?
  122. checkSession('post');
  123. $tk = validateToken('login');
  124. spamProtection('login');
  125. // Set the login_url if it's not already set (but careful not to send us to an attachment).
  126. if ((empty($_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))
  127. $_SESSION['login_url'] = $_SESSION['old_url'];
  128. // Been guessing a lot, haven't we?
  129. if (isset($_SESSION['failed_login']) && $_SESSION['failed_login'] >= $modSettings['failed_login_threshold'] * 3)
  130. fatal_lang_error('login_threshold_fail', 'critical');
  131. // Set up the cookie length. (if it's invalid, just fall through and use the default.)
  132. if (isset($_POST['cookieneverexp']) || (!empty($_POST['cookielength']) && $_POST['cookielength'] == -1))
  133. $modSettings['cookieTime'] = 3153600;
  134. elseif (!empty($_POST['cookielength']) && ($_POST['cookielength'] >= 1 || $_POST['cookielength'] <= 525600))
  135. $modSettings['cookieTime'] = (int) $_POST['cookielength'];
  136. loadLanguage('Login');
  137. // Load the template stuff - wireless or normal.
  138. if (WIRELESS)
  139. $context['sub_template'] = WIRELESS_PROTOCOL . '_login';
  140. else
  141. {
  142. loadTemplate('Login');
  143. $context['sub_template'] = 'login';
  144. }
  145. // Set up the default/fallback stuff.
  146. $context['default_username'] = isset($_POST['user']) ? preg_replace('~&amp;#(\\d{1,7}|x[0-9a-fA-F]{1,6});~', '&#\\1;', htmlspecialchars($_POST['user'])) : '';
  147. $context['default_password'] = '';
  148. $context['never_expire'] = $modSettings['cookieTime'] == 525600 || $modSettings['cookieTime'] == 3153600;
  149. $context['login_errors'] = array($txt['error_occured']);
  150. $context['page_title'] = $txt['login'];
  151. // Add the login chain to the link tree.
  152. $context['linktree'][] = array(
  153. 'url' => $scripturl . '?action=login',
  154. 'name' => $txt['login'],
  155. );
  156. if (!empty($_POST['openid_identifier']) && !empty($modSettings['enableOpenID']))
  157. {
  158. require_once($sourcedir . '/Subs-OpenID.php');
  159. if (($open_id = smf_openID_validate($_POST['openid_identifier'])) !== 'no_data')
  160. return $open_id;
  161. }
  162. // You forgot to type your username, dummy!
  163. if (!isset($_POST['user']) || $_POST['user'] == '')
  164. {
  165. $context['login_errors'] = array($txt['need_username']);
  166. return;
  167. }
  168. // Hmm... maybe 'admin' will login with no password. Uhh... NO!
  169. if ((!isset($_POST['passwrd']) || $_POST['passwrd'] == '') && (!isset($_POST['hash_passwrd']) || strlen($_POST['hash_passwrd']) != 40))
  170. {
  171. $context['login_errors'] = array($txt['no_password']);
  172. return;
  173. }
  174. // No funky symbols either.
  175. if (preg_match('~[<>&"\'=\\\]~', preg_replace('~(&#(\\d{1,7}|x[0-9a-fA-F]{1,6});)~', '', $_POST['user'])) != 0)
  176. {
  177. $context['login_errors'] = array($txt['error_invalid_characters_username']);
  178. return;
  179. }
  180. // Are we using any sort of integration to validate the login?
  181. if (in_array('retry', call_integration_hook('integrate_validate_login', array($_POST['user'], isset($_POST['hash_passwrd']) && strlen($_POST['hash_passwrd']) == 40 ? $_POST['hash_passwrd'] : null, $modSettings['cookieTime'])), true))
  182. {
  183. $context['login_errors'] = array($txt['login_hash_error']);
  184. $context['disable_login_hashing'] = true;
  185. return;
  186. }
  187. // Load the data up!
  188. $request = $smcFunc['db_query']('', '
  189. SELECT passwd, id_member, id_group, lngfile, is_activated, email_address, additional_groups, member_name, password_salt,
  190. openid_uri, passwd_flood
  191. FROM {db_prefix}members
  192. WHERE ' . ($smcFunc['db_case_sensitive'] ? 'LOWER(member_name) = LOWER({string:user_name})' : 'member_name = {string:user_name}') . '
  193. LIMIT 1',
  194. array(
  195. 'user_name' => $smcFunc['db_case_sensitive'] ? strtolower($_POST['user']) : $_POST['user'],
  196. )
  197. );
  198. // Probably mistyped or their email, try it as an email address. (member_name first, though!)
  199. if ($smcFunc['db_num_rows']($request) == 0 && strpos($_POST['user'], '@') !== false)
  200. {
  201. $smcFunc['db_free_result']($request);
  202. $request = $smcFunc['db_query']('', '
  203. SELECT passwd, id_member, id_group, lngfile, is_activated, email_address, additional_groups, member_name, password_salt, openid_uri,
  204. passwd_flood
  205. FROM {db_prefix}members
  206. WHERE email_address = {string:user_name}
  207. LIMIT 1',
  208. array(
  209. 'user_name' => $_POST['user'],
  210. )
  211. );
  212. }
  213. // Let them try again, it didn't match anything...
  214. if ($smcFunc['db_num_rows']($request) == 0)
  215. {
  216. $context['login_errors'] = array($txt['username_no_exist']);
  217. return;
  218. }
  219. $user_settings = $smcFunc['db_fetch_assoc']($request);
  220. $smcFunc['db_free_result']($request);
  221. // Figure out the password using SMF's encryption - if what they typed is right.
  222. if (isset($_POST['hash_passwrd']) && strlen($_POST['hash_passwrd']) == 40)
  223. {
  224. // Needs upgrading?
  225. if (strlen($user_settings['passwd']) != 40)
  226. {
  227. $context['login_errors'] = array($txt['login_hash_error']);
  228. $context['disable_login_hashing'] = true;
  229. unset($user_settings);
  230. return;
  231. }
  232. // Challenge passed.
  233. elseif ($_POST['hash_passwrd'] == sha1($user_settings['passwd'] . $sc . $tk))
  234. $sha_passwd = $user_settings['passwd'];
  235. else
  236. {
  237. // Don't allow this!
  238. validatePasswordFlood($user_settings['id_member'], $user_settings['passwd_flood']);
  239. $_SESSION['failed_login'] = isset($_SESSION['failed_login']) ? ($_SESSION['failed_login'] + 1) : 1;
  240. if ($_SESSION['failed_login'] >= $modSettings['failed_login_threshold'])
  241. redirectexit('action=reminder');
  242. else
  243. {
  244. log_error($txt['incorrect_password'] . ' - <span class="remove">' . $user_settings['member_name'] . '</span>', 'user');
  245. $context['disable_login_hashing'] = true;
  246. $context['login_errors'] = array($txt['incorrect_password']);
  247. unset($user_settings);
  248. return;
  249. }
  250. }
  251. }
  252. else
  253. $sha_passwd = sha1(strtolower($user_settings['member_name']) . un_htmlspecialchars($_POST['passwrd']));
  254. // Bad password! Thought you could fool the database?!
  255. if ($user_settings['passwd'] != $sha_passwd)
  256. {
  257. // Let's be cautious, no hacking please. thanx.
  258. validatePasswordFlood($user_settings['id_member'], $user_settings['passwd_flood']);
  259. // Maybe we were too hasty... let's try some other authentication methods.
  260. $other_passwords = array();
  261. // None of the below cases will be used most of the time (because the salt is normally set.)
  262. if (!empty($modSettings['enable_password_conversion']) && $user_settings['password_salt'] == '')
  263. {
  264. // YaBB SE, Discus, MD5 (used a lot), SHA-1 (used some), SMF 1.0.x, IkonBoard, and none at all.
  265. $other_passwords[] = crypt($_POST['passwrd'], substr($_POST['passwrd'], 0, 2));
  266. $other_passwords[] = crypt($_POST['passwrd'], substr($user_settings['passwd'], 0, 2));
  267. $other_passwords[] = md5($_POST['passwrd']);
  268. $other_passwords[] = sha1($_POST['passwrd']);
  269. $other_passwords[] = md5_hmac($_POST['passwrd'], strtolower($user_settings['member_name']));
  270. $other_passwords[] = md5($_POST['passwrd'] . strtolower($user_settings['member_name']));
  271. $other_passwords[] = md5(md5($_POST['passwrd']));
  272. $other_passwords[] = $_POST['passwrd'];
  273. // This one is a strange one... MyPHP, crypt() on the MD5 hash.
  274. $other_passwords[] = crypt(md5($_POST['passwrd']), md5($_POST['passwrd']));
  275. // Snitz style - SHA-256. Technically, this is a downgrade, but most PHP configurations don't support sha256 anyway.
  276. if (strlen($user_settings['passwd']) == 64 && function_exists('mhash') && defined('MHASH_SHA256'))
  277. $other_passwords[] = bin2hex(mhash(MHASH_SHA256, $_POST['passwrd']));
  278. // phpBB3 users new hashing. We now support it as well ;).
  279. $other_passwords[] = phpBB3_password_check($_POST['passwrd'], $user_settings['passwd']);
  280. // APBoard 2 Login Method.
  281. $other_passwords[] = md5(crypt($_POST['passwrd'], 'CRYPT_MD5'));
  282. }
  283. // The hash should be 40 if it's SHA-1, so we're safe with more here too.
  284. elseif (!empty($modSettings['enable_password_conversion']) && strlen($user_settings['passwd']) == 32)
  285. {
  286. // vBulletin 3 style hashing? Let's welcome them with open arms \o/.
  287. $other_passwords[] = md5(md5($_POST['passwrd']) . stripslashes($user_settings['password_salt']));
  288. // Hmm.. p'raps it's Invision 2 style?
  289. $other_passwords[] = md5(md5($user_settings['password_salt']) . md5($_POST['passwrd']));
  290. // Some common md5 ones.
  291. $other_passwords[] = md5($user_settings['password_salt'] . $_POST['passwrd']);
  292. $other_passwords[] = md5($_POST['passwrd'] . $user_settings['password_salt']);
  293. }
  294. elseif (strlen($user_settings['passwd']) == 40)
  295. {
  296. // Maybe they are using a hash from before the password fix.
  297. $other_passwords[] = sha1(strtolower($user_settings['member_name']) . un_htmlspecialchars($_POST['passwrd']));
  298. // BurningBoard3 style of hashing.
  299. if (!empty($modSettings['enable_password_conversion']))
  300. $other_passwords[] = sha1($user_settings['password_salt'] . sha1($user_settings['password_salt'] . sha1($_POST['passwrd'])));
  301. // Perhaps we converted to UTF-8 and have a valid password being hashed differently.
  302. if ($context['character_set'] == 'utf8' && !empty($modSettings['previousCharacterSet']) && $modSettings['previousCharacterSet'] != 'utf8')
  303. {
  304. // Try iconv first, for no particular reason.
  305. if (function_exists('iconv'))
  306. $other_passwords['iconv'] = sha1(strtolower(iconv('UTF-8', $modSettings['previousCharacterSet'], $user_settings['member_name'])) . un_htmlspecialchars(iconv('UTF-8', $modSettings['previousCharacterSet'], $_POST['passwrd'])));
  307. // Say it aint so, iconv failed!
  308. if (empty($other_passwords['iconv']) && function_exists('mb_convert_encoding'))
  309. $other_passwords[] = sha1(strtolower(mb_convert_encoding($user_settings['member_name'], 'UTF-8', $modSettings['previousCharacterSet'])) . un_htmlspecialchars(mb_convert_encoding($_POST['passwrd'], 'UTF-8', $modSettings['previousCharacterSet'])));
  310. }
  311. }
  312. // SMF's sha1 function can give a funny result on Linux (Not our fault!). If we've now got the real one let the old one be valid!
  313. if (stripos(PHP_OS, 'win') !== 0)
  314. {
  315. require_once($sourcedir . '/Subs-Compat.php');
  316. $other_passwords[] = sha1_smf(strtolower($user_settings['member_name']) . un_htmlspecialchars($_POST['passwrd']));
  317. }
  318. // Allows mods to easily extend the $other_passwords array
  319. call_integration_hook('integrate_other_passwords', array($other_passwords));
  320. // Whichever encryption it was using, let's make it use SMF's now ;).
  321. if (in_array($user_settings['passwd'], $other_passwords))
  322. {
  323. $user_settings['passwd'] = $sha_passwd;
  324. $user_settings['password_salt'] = substr(md5(mt_rand()), 0, 4);
  325. // Update the password and set up the hash.
  326. updateMemberData($user_settings['id_member'], array('passwd' => $user_settings['passwd'], 'password_salt' => $user_settings['password_salt'], 'passwd_flood' => ''));
  327. }
  328. // Okay, they for sure didn't enter the password!
  329. else
  330. {
  331. // They've messed up again - keep a count to see if they need a hand.
  332. $_SESSION['failed_login'] = isset($_SESSION['failed_login']) ? ($_SESSION['failed_login'] + 1) : 1;
  333. // Hmm... don't remember it, do you? Here, try the password reminder ;).
  334. if ($_SESSION['failed_login'] >= $modSettings['failed_login_threshold'])
  335. redirectexit('action=reminder');
  336. // We'll give you another chance...
  337. else
  338. {
  339. // Log an error so we know that it didn't go well in the error log.
  340. log_error($txt['incorrect_password'] . ' - <span class="remove">' . $user_settings['member_name'] . '</span>', 'user');
  341. $context['login_errors'] = array($txt['incorrect_password']);
  342. return;
  343. }
  344. }
  345. }
  346. elseif (!empty($user_settings['passwd_flood']))
  347. {
  348. // Let's be sure they weren't a little hacker.
  349. validatePasswordFlood($user_settings['id_member'], $user_settings['passwd_flood'], true);
  350. // If we got here then we can reset the flood counter.
  351. updateMemberData($user_settings['id_member'], array('passwd_flood' => ''));
  352. }
  353. // Correct password, but they've got no salt; fix it!
  354. if ($user_settings['password_salt'] == '')
  355. {
  356. $user_settings['password_salt'] = substr(md5(mt_rand()), 0, 4);
  357. updateMemberData($user_settings['id_member'], array('password_salt' => $user_settings['password_salt']));
  358. }
  359. // Check their activation status.
  360. if (!checkActivation())
  361. return;
  362. DoLogin();
  363. }
  364. /**
  365. * Check activation status of the current user.
  366. */
  367. function checkActivation()
  368. {
  369. global $context, $txt, $scripturl, $user_settings, $modSettings;
  370. if (!isset($context['login_errors']))
  371. $context['login_errors'] = array();
  372. // What is the true activation status of this account?
  373. $activation_status = $user_settings['is_activated'] > 10 ? $user_settings['is_activated'] - 10 : $user_settings['is_activated'];
  374. // Check if the account is activated - COPPA first...
  375. if ($activation_status == 5)
  376. {
  377. $context['login_errors'][] = $txt['coppa_no_concent'] . ' <a href="' . $scripturl . '?action=coppa;member=' . $user_settings['id_member'] . '">' . $txt['coppa_need_more_details'] . '</a>';
  378. return false;
  379. }
  380. // Awaiting approval still?
  381. elseif ($activation_status == 3)
  382. fatal_lang_error('still_awaiting_approval', 'user');
  383. // Awaiting deletion, changed their mind?
  384. elseif ($activation_status == 4)
  385. {
  386. if (isset($_REQUEST['undelete']))
  387. {
  388. updateMemberData($user_settings['id_member'], array('is_activated' => 1));
  389. updateSettings(array('unapprovedMembers' => ($modSettings['unapprovedMembers'] > 0 ? $modSettings['unapprovedMembers'] - 1 : 0)));
  390. }
  391. else
  392. {
  393. $context['disable_login_hashing'] = true;
  394. $context['login_errors'][] = $txt['awaiting_delete_account'];
  395. $context['login_show_undelete'] = true;
  396. return false;
  397. }
  398. }
  399. // Standard activation?
  400. elseif ($activation_status != 1)
  401. {
  402. log_error($txt['activate_not_completed1'] . ' - <span class="remove">' . $user_settings['member_name'] . '</span>', false);
  403. $context['login_errors'][] = $txt['activate_not_completed1'] . ' <a href="' . $scripturl . '?action=activate;sa=resend;u=' . $user_settings['id_member'] . '">' . $txt['activate_not_completed2'] . '</a>';
  404. return false;
  405. }
  406. return true;
  407. }
  408. /**
  409. * Perform the logging in. (set cookie, call hooks, etc)
  410. */
  411. function DoLogin()
  412. {
  413. global $txt, $scripturl, $user_info, $user_settings, $smcFunc;
  414. global $cookiename, $maintenance, $modSettings, $context, $sourcedir;
  415. // Load cookie authentication stuff.
  416. require_once($sourcedir . '/Subs-Auth.php');
  417. // Call login integration functions.
  418. call_integration_hook('integrate_login', array($user_settings['member_name'], isset($_POST['hash_passwrd']) && strlen($_POST['hash_passwrd']) == 40 ? $_POST['hash_passwrd'] : null, $modSettings['cookieTime']));
  419. // Get ready to set the cookie...
  420. $username = $user_settings['member_name'];
  421. $user_info['id'] = $user_settings['id_member'];
  422. // Bam! Cookie set. A session too, just in case.
  423. setLoginCookie(60 * $modSettings['cookieTime'], $user_settings['id_member'], sha1($user_settings['passwd'] . $user_settings['password_salt']));
  424. // Reset the login threshold.
  425. if (isset($_SESSION['failed_login']))
  426. unset($_SESSION['failed_login']);
  427. $user_info['is_guest'] = false;
  428. $user_settings['additional_groups'] = explode(',', $user_settings['additional_groups']);
  429. $user_info['is_admin'] = $user_settings['id_group'] == 1 || in_array(1, $user_settings['additional_groups']);
  430. // Are you banned?
  431. is_not_banned(true);
  432. // An administrator, set up the login so they don't have to type it again.
  433. if ($user_info['is_admin'] && isset($user_settings['openid_uri']) && empty($user_settings['openid_uri']))
  434. {
  435. $_SESSION['admin_time'] = time();
  436. unset($_SESSION['just_registered']);
  437. }
  438. // Don't stick the language or theme after this point.
  439. unset($_SESSION['language'], $_SESSION['id_theme']);
  440. // First login?
  441. $request = $smcFunc['db_query']('', '
  442. SELECT last_login
  443. FROM {db_prefix}members
  444. WHERE id_member = {int:id_member}
  445. AND last_login = 0',
  446. array(
  447. 'id_member' => $user_info['id'],
  448. )
  449. );
  450. if ($smcFunc['db_num_rows']($request) == 1)
  451. $_SESSION['first_login'] = true;
  452. else
  453. unset($_SESSION['first_login']);
  454. $smcFunc['db_free_result']($request);
  455. // You've logged in, haven't you?
  456. updateMemberData($user_info['id'], array('last_login' => time(), 'member_ip' => $user_info['ip'], 'member_ip2' => $_SERVER['BAN_CHECK_IP']));
  457. // Get rid of the online entry for that old guest....
  458. $smcFunc['db_query']('', '
  459. DELETE FROM {db_prefix}log_online
  460. WHERE session = {string:session}',
  461. array(
  462. 'session' => 'ip' . $user_info['ip'],
  463. )
  464. );
  465. $_SESSION['log_time'] = 0;
  466. // Log this entry, only if we have it enabled.
  467. if (!empty($modSettings['loginHistoryDays']))
  468. $smcFunc['db_insert']('insert',
  469. '{db_prefix}member_logins',
  470. array(
  471. 'id_member' => 'int', 'time' => 'int', 'ip' => 'string', 'ip2' => 'string',
  472. ),
  473. array(
  474. $user_info['id'], time(), $user_info['ip'], $user_info['ip2']
  475. ),
  476. array(
  477. 'id_member', 'time'
  478. )
  479. );
  480. // Just log you back out if it's in maintenance mode and you AREN'T an admin.
  481. if (empty($maintenance) || allowedTo('admin_forum'))
  482. redirectexit('action=login2;sa=check;member=' . $user_info['id'], $context['server']['needs_login_fix']);
  483. else
  484. redirectexit('action=logout;' . $context['session_var'] . '=' . $context['session_id'], $context['server']['needs_login_fix']);
  485. }
  486. /**
  487. * Logs the current user out of their account.
  488. * It requires that the session hash is sent as well, to prevent automatic logouts by images or javascript.
  489. * It redirects back to $_SESSION['logout_url'], if it exists.
  490. * It is accessed via ?action=logout;session_var=...
  491. *
  492. * @param bool $internal if true, it doesn't check the session
  493. * @param $redirect
  494. */
  495. function Logout($internal = false, $redirect = true)
  496. {
  497. global $sourcedir, $user_info, $user_settings, $context, $modSettings, $smcFunc;
  498. // Make sure they aren't being auto-logged out.
  499. if (!$internal)
  500. checkSession('get');
  501. require_once($sourcedir . '/Subs-Auth.php');
  502. if (isset($_SESSION['pack_ftp']))
  503. $_SESSION['pack_ftp'] = null;
  504. // They cannot be open ID verified any longer.
  505. if (isset($_SESSION['openid']))
  506. unset($_SESSION['openid']);
  507. // It won't be first login anymore.
  508. unset($_SESSION['first_login']);
  509. // Just ensure they aren't a guest!
  510. if (!$user_info['is_guest'])
  511. {
  512. // Pass the logout information to integrations.
  513. call_integration_hook('integrate_logout', array($user_settings['member_name']));
  514. // If you log out, you aren't online anymore :P.
  515. $smcFunc['db_query']('', '
  516. DELETE FROM {db_prefix}log_online
  517. WHERE id_member = {int:current_member}',
  518. array(
  519. 'current_member' => $user_info['id'],
  520. )
  521. );
  522. }
  523. $_SESSION['log_time'] = 0;
  524. // Empty the cookie! (set it in the past, and for id_member = 0)
  525. setLoginCookie(-3600, 0);
  526. // Off to the merry board index we go!
  527. if ($redirect)
  528. {
  529. if (empty($_SESSION['logout_url']))
  530. redirectexit('', $context['server']['needs_login_fix']);
  531. elseif (!empty($_SESSION['logout_url']) && (strpos('http://', $_SESSION['logout_url']) === false && strpos('https://', $_SESSION['logout_url']) === false))
  532. {
  533. unset ($_SESSION['logout_url']);
  534. redirectexit();
  535. }
  536. else
  537. {
  538. $temp = $_SESSION['logout_url'];
  539. unset($_SESSION['logout_url']);
  540. redirectexit($temp, $context['server']['needs_login_fix']);
  541. }
  542. }
  543. }
  544. /**
  545. * MD5 Encryption used for older passwords. (SMF 1.0.x/YaBB SE 1.5.x hashing)
  546. *
  547. * @param string $data
  548. * @param string $key
  549. * @return string, the HMAC MD5 of data with key
  550. */
  551. function md5_hmac($data, $key)
  552. {
  553. $key = str_pad(strlen($key) <= 64 ? $key : pack('H*', md5($key)), 64, chr(0x00));
  554. return md5(($key ^ str_repeat(chr(0x5c), 64)) . pack('H*', md5(($key ^ str_repeat(chr(0x36), 64)) . $data)));
  555. }
  556. /**
  557. * Custom encryption for phpBB3 based passwords.
  558. *
  559. * @param string $passwd
  560. * @param string $passwd_hash
  561. * @return string
  562. */
  563. function phpBB3_password_check($passwd, $passwd_hash)
  564. {
  565. // Too long or too short?
  566. if (strlen($passwd_hash) != 34)
  567. return;
  568. // Range of characters allowed.
  569. $range = './0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
  570. // Tests
  571. $strpos = strpos($range, $passwd_hash[3]);
  572. $count = 1 << $strpos;
  573. $count2 = $count;
  574. $salt = substr($passwd_hash, 4, 8);
  575. $hash = md5($salt . $passwd, true);
  576. for (; $count != 0; --$count)
  577. $hash = md5($hash . $passwd, true);
  578. $output = substr($passwd_hash, 0, 12);
  579. $i = 0;
  580. while ($i < 16)
  581. {
  582. $value = ord($hash[$i++]);
  583. $output .= $range[$value & 0x3f];
  584. if ($i < 16)
  585. $value |= ord($hash[$i]) << 8;
  586. $output .= $range[($value >> 6) & 0x3f];
  587. if ($i++ >= 16)
  588. break;
  589. if ($i < 16)
  590. $value |= ord($hash[$i]) << 16;
  591. $output .= $range[($value >> 12) & 0x3f];
  592. if ($i++ >= 16)
  593. break;
  594. $output .= $range[($value >> 18) & 0x3f];
  595. }
  596. // Return now.
  597. return $output;
  598. }
  599. /**
  600. * This protects against brute force attacks on a member's password.
  601. * Importantly, even if the password was right we DON'T TELL THEM!
  602. *
  603. * @param $id_member
  604. * @param $password_flood_value = false
  605. * @param $was_correct = false
  606. */
  607. function validatePasswordFlood($id_member, $password_flood_value = false, $was_correct = false)
  608. {
  609. global $smcFunc, $cookiename, $sourcedir;
  610. // As this is only brute protection, we allow 5 attempts every 10 seconds.
  611. // Destroy any session or cookie data about this member, as they validated wrong.
  612. require_once($sourcedir . '/Subs-Auth.php');
  613. setLoginCookie(-3600, 0);
  614. if (isset($_SESSION['login_' . $cookiename]))
  615. unset($_SESSION['login_' . $cookiename]);
  616. // We need a member!
  617. if (!$id_member)
  618. {
  619. // Redirect back!
  620. redirectexit();
  621. // Probably not needed, but still make sure...
  622. fatal_lang_error('no_access', false);
  623. }
  624. // Right, have we got a flood value?
  625. if ($password_flood_value !== false)
  626. @list ($time_stamp, $number_tries) = explode('|', $password_flood_value);
  627. // Timestamp invalid or non-existent?
  628. if (empty($number_tries) || $time_stamp < (time() - 10))
  629. {
  630. // If it wasn't *that* long ago, don't give them another five goes.
  631. $number_tries = !empty($number_tries) && $time_stamp < (time() - 20) ? 2 : 0;
  632. $time_stamp = time();
  633. }
  634. $number_tries++;
  635. // Broken the law?
  636. if ($number_tries > 5)
  637. fatal_lang_error('login_threshold_brute_fail', 'critical');
  638. // Otherwise set the members data. If they correct on their first attempt then we actually clear it, otherwise we set it!
  639. updateMemberData($id_member, array('passwd_flood' => $was_correct && $number_tries == 1 ? '' : $time_stamp . '|' . $number_tries));
  640. }
  641. ?>