global.inc.php 25 KB

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  1. <?php
  2. /* For licensing terms, see /license.txt */
  3. /**
  4. * It is recommended that ALL Chamilo scripts include this important file.
  5. * This script manages
  6. * - http get, post, post_files, session, server-vars extraction into global namespace;
  7. * (which doesn't occur anymore when servertype config setting is set to test,
  8. * and which will disappear completely in Dokeos 1.6.1)
  9. * - include of /conf/configuration.php;
  10. * - include of several libraries: main_api, database, display, text, security;
  11. * - selecting the main database;
  12. * - include of language files.
  13. *
  14. * @package chamilo.include
  15. * @todo isn't configuration.php renamed to configuration.inc.php yet?
  16. * @todo use the $_configuration array for all the needed variables
  17. * @todo remove the code that displays the button that links to the install page
  18. * but use a redirect immediately. By doing so the $already_installed variable can be removed.
  19. * @todo make it possible to enable / disable the tracking through the Chamilo config page.
  20. *
  21. */
  22. // Showing/hiding error codes in global error messages.
  23. define('SHOW_ERROR_CODES', false);
  24. // Determine the directory path where this current file lies.
  25. // This path will be useful to include the other intialisation files.
  26. $includePath = dirname(__FILE__);
  27. // @todo Isn't this file renamed to configuration.inc.php yet?
  28. // Include the main Chamilo platform configuration file.
  29. $main_configuration_file_path = $includePath.'/conf/configuration.php';
  30. $already_installed = false;
  31. if (file_exists($main_configuration_file_path)) {
  32. require_once $main_configuration_file_path;
  33. $already_installed = true;
  34. } else {
  35. $_configuration = array();
  36. }
  37. //Redirects to the main/install/ page
  38. if (!$already_installed) {
  39. $global_error_code = 2;
  40. // The system has not been installed yet.
  41. require $includePath.'/global_error_message.inc.php';
  42. die();
  43. }
  44. // Ensure that _configuration is in the global scope before loading
  45. // main_api.lib.php. This is particularly helpful for unit tests
  46. if (!isset($GLOBALS['_configuration'])) {
  47. $GLOBALS['_configuration'] = $_configuration;
  48. }
  49. // Code for trnasitional purposes, it can be removed right before the 1.8.7 release.
  50. if (empty($_configuration['system_version'])) {
  51. $_configuration['system_version'] = $_configuration['dokeos_version'];
  52. $_configuration['system_stable'] = $_configuration['dokeos_stable'];
  53. $_configuration['software_url'] = 'http://www.chamilo.org/';
  54. }
  55. // For backward compatibility.
  56. $_configuration['dokeos_version'] = $_configuration['system_version'];
  57. $_configuration['dokeos_stable'] = $_configuration['system_stable'];
  58. // Include the main Chamilo platform library file.
  59. require_once $includePath.'/lib/main_api.lib.php';
  60. //Check the PHP version
  61. api_check_php_version($includePath.'/');
  62. // Specification for usernames:
  63. // 1. ASCII-letters, digits, "." (dot), "_" (underscore) are acceptable, 40 characters maximum length.
  64. // 2. Empty username is formally valid, but it is reserved for the anonymous user.
  65. // 3. Checking the login_is_email portal setting in order to accept 100 chars maximum
  66. $default_username_length = 40;
  67. if (api_get_setting('login_is_email') == 'true') {
  68. $default_username_length = 100;
  69. }
  70. define('USERNAME_MAX_LENGTH', $default_username_length);
  71. // Do not over-use this variable. It is only for this script's local use.
  72. $lib_path = api_get_path(LIBRARY_PATH);
  73. // Fix bug in IIS that doesn't fill the $_SERVER['REQUEST_URI'].
  74. api_request_uri();
  75. // Add the path to the pear packages to the include path
  76. ini_set('include_path', api_create_include_path_setting());
  77. // This is for compatibility with MAC computers.
  78. ini_set('auto_detect_line_endings', '1');
  79. // Include the libraries that are necessary everywhere
  80. require_once dirname(__FILE__).'/autoload.inc.php';
  81. require_once $lib_path.'database.lib.php';
  82. //require_once $lib_path.'template.lib.php'; moved to autoload
  83. //require_once $lib_path.'display.lib.php';
  84. require_once $lib_path.'text.lib.php';
  85. //require_once $lib_path.'image.lib.php'; moved to autoload
  86. require_once $lib_path.'array.lib.php';
  87. //require_once $lib_path.'security.lib.php'; moved to autoload
  88. require_once $lib_path.'events.lib.inc.php';
  89. //require_once $lib_path.'debug.lib.php'; moved to autoload
  90. //require_once $lib_path.'rights.lib.php'; moved to autoload
  91. require_once $lib_path.'model.lib.php';
  92. //require_once $lib_path.'sortable_table.class.php'; moved to autoload
  93. //require_once $lib_path.'usermanager.lib.php'; moved to autoload
  94. //require_once $lib_path.'message.lib.php'; moved to autoload
  95. //require_once $lib_path.'social.lib.php'; moved to autoload
  96. //require_once $lib_path.'notification.lib.php'; moved to autoload
  97. require_once $lib_path.'course.lib.php';
  98. //require_once $lib_path.'sessionmanager.lib.php'; moved to autoload
  99. //require_once $lib_path.'tracking.lib.php'; moved to autoload
  100. //require_once $lib_path.'formvalidator/FormValidator.class.php'; moved to autoload
  101. require_once $lib_path.'online.inc.php';
  102. //Here we load the new Doctrine class (just for tests)
  103. //require_once $lib_path.'db.lib.php';
  104. //$db = new db();
  105. /* DATABASE CONNECTION */
  106. // @todo: this shouldn't be done here. It should be stored correctly during installation.
  107. if (empty($_configuration['statistics_database']) && $already_installed) {
  108. $_configuration['statistics_database'] = $_configuration['main_database'];
  109. }
  110. global $database_connection;
  111. // Connect to the server database and select the main chamilo database.
  112. if (!($conn_return = @Database::connect(
  113. array(
  114. 'server' => $_configuration['db_host'],
  115. 'username' => $_configuration['db_user'],
  116. 'password' => $_configuration['db_password'],
  117. 'persistent' => $_configuration['db_persistent_connection'] // When $_configuration['db_persistent_connection'] is set, it is expected to be a boolean type.
  118. )))) {
  119. $global_error_code = 3;
  120. // The database server is not available or credentials are invalid.
  121. require $includePath.'/global_error_message.inc.php';
  122. die();
  123. }
  124. if (!$_configuration['db_host']) {
  125. $global_error_code = 4;
  126. // A configuration option about database server is missing.
  127. require $includePath.'/global_error_message.inc.php';
  128. die();
  129. }
  130. /* RETRIEVING ALL THE CHAMILO CONFIG SETTINGS FOR MULTIPLE URLs FEATURE*/
  131. if (!empty($_configuration['multiple_access_urls'])) {
  132. $_configuration['access_url'] = 1;
  133. $access_urls = api_get_access_urls();
  134. $protocol = ((!empty($_SERVER['HTTPS']) && strtoupper($_SERVER['HTTPS']) != 'OFF') ? 'https' : 'http').'://';
  135. $request_url1 = $protocol.$_SERVER['SERVER_NAME'].'/';
  136. $request_url2 = $protocol.$_SERVER['HTTP_HOST'].'/';
  137. foreach ($access_urls as & $details) {
  138. if ($request_url1 == $details['url'] or $request_url2 == $details['url']) {
  139. $_configuration['access_url'] = $details['id'];
  140. }
  141. }
  142. } else {
  143. $_configuration['access_url'] = 1;
  144. }
  145. // The system has not been designed to use special SQL modes that were introduced since MySQL 5.
  146. Database::query("set session sql_mode='';");
  147. if (!Database::select_db($_configuration['main_database'], $database_connection)) {
  148. $global_error_code = 5;
  149. // Connection to the main Chamilo database is impossible, it might be missing or restricted or its configuration option might be incorrect.
  150. require $includePath.'/global_error_message.inc.php';
  151. die();
  152. }
  153. /* Initialization of the default encodings */
  154. // The platform's character set must be retrieved at this early moment.
  155. $sql = "SELECT selected_value FROM settings_current WHERE variable = 'platform_charset';";
  156. $result = Database::query($sql);
  157. while ($row = @Database::fetch_array($result)) {
  158. $charset = $row[0];
  159. }
  160. if (empty($charset)) {
  161. $charset = 'UTF-8';
  162. }
  163. // Preserving the value of the global variable $charset.
  164. $charset_initial_value = $charset;
  165. // Initialization of the internationalization library.
  166. api_initialize_internationalization();
  167. // Initialization of the default encoding that will be used by the multibyte string routines in the internationalization library.
  168. api_set_internationalization_default_encoding($charset);
  169. //setting_gettext();
  170. // Initialization of the database encoding to be used.
  171. Database::query("SET SESSION character_set_server='utf8';");
  172. Database::query("SET SESSION collation_server='utf8_general_ci';");
  173. if (api_is_utf8($charset)) {
  174. // See Bug #1802: For UTF-8 systems we prefer to use "SET NAMES 'utf8'" statement in order to avoid a bizarre problem with Chinese language.
  175. Database::query("SET NAMES 'utf8';");
  176. } else {
  177. Database::query("SET CHARACTER SET '" . Database::to_db_encoding($charset) . "';");
  178. }
  179. // Start session after the internationalization library has been initialized.
  180. Chamilo::session()->start($already_installed);
  181. // Remove quotes added by PHP - get_magic_quotes_gpc() is deprecated in PHP 5 see #2970
  182. if (function_exists('get_magic_quotes_gpc') && get_magic_quotes_gpc()) {
  183. array_walk_recursive_limited($_GET, 'stripslashes', true);
  184. array_walk_recursive_limited($_POST, 'stripslashes', true);
  185. array_walk_recursive_limited($_COOKIE, 'stripslashes', true);
  186. array_walk_recursive_limited($_REQUEST, 'stripslashes', true);
  187. }
  188. // access_url == 1 is the default chamilo location
  189. if ($_configuration['access_url'] != 1) {
  190. $url_info = api_get_access_url($_configuration['access_url']);
  191. if ($url_info['active'] == 1) {
  192. $settings_by_access = & api_get_settings(null, 'list', $_configuration['access_url'], 1);
  193. foreach ($settings_by_access as & $row) {
  194. if (empty($row['variable'])) {
  195. $row['variable'] = 0;
  196. }
  197. if (empty($row['subkey'])) {
  198. $row['subkey'] = 0;
  199. }
  200. if (empty($row['category'])) {
  201. $row['category'] = 0;
  202. }
  203. $settings_by_access_list[$row['variable']][$row['subkey']][$row['category']] = $row;
  204. }
  205. }
  206. }
  207. $result = & api_get_settings(null, 'list', 1);
  208. foreach ($result as & $row) {
  209. if ($_configuration['access_url'] != 1) {
  210. if ($url_info['active'] == 1) {
  211. $var = empty($row['variable']) ? 0 : $row['variable'];
  212. $subkey = empty($row['subkey']) ? 0 : $row['subkey'];
  213. $category = empty($row['category']) ? 0 : $row['category'];
  214. }
  215. if ($row['access_url_changeable'] == 1 && $url_info['active'] == 1) {
  216. if (isset($settings_by_access_list[$var]) &&
  217. $settings_by_access_list[$var][$subkey][$category]['selected_value'] != '') {
  218. if ($row['subkey'] == null) {
  219. $_setting[$row['variable']] = $settings_by_access_list[$var][$subkey][$category]['selected_value'];
  220. } else {
  221. $_setting[$row['variable']][$row['subkey']] = $settings_by_access_list[$var][$subkey][$category]['selected_value'];
  222. }
  223. } else {
  224. if ($row['subkey'] == null) {
  225. $_setting[$row['variable']] = $row['selected_value'];
  226. } else {
  227. $_setting[$row['variable']][$row['subkey']] = $row['selected_value'];
  228. }
  229. }
  230. } else {
  231. if ($row['subkey'] == null) {
  232. $_setting[$row['variable']] = $row['selected_value'];
  233. } else {
  234. $_setting[$row['variable']][$row['subkey']] = $row['selected_value'];
  235. }
  236. }
  237. } else {
  238. if ($row['subkey'] == null) {
  239. $_setting[$row['variable']] = $row['selected_value'];
  240. } else {
  241. $_setting[$row['variable']][$row['subkey']] = $row['selected_value'];
  242. }
  243. }
  244. }
  245. $result = & api_get_settings('Plugins', 'list', $_configuration['access_url']);
  246. $_plugins = array();
  247. foreach ($result as & $row) {
  248. $key = & $row['variable'];
  249. if (is_string($_setting[$key])) {
  250. $_setting[$key] = array();
  251. }
  252. $_setting[$key][] = $row['selected_value'];
  253. $_plugins[$key][] = $row['selected_value'];
  254. }
  255. // Load allowed tag definitions for kses and/or HTMLPurifier.
  256. require_once $lib_path.'formvalidator/Rule/allowed_tags.inc.php';
  257. // Load HTMLPurifier.
  258. //require_once $lib_path.'htmlpurifier/library/HTMLPurifier.auto.php'; // It will be loaded later, in a lazy manner.
  259. // Before we call local.inc.php, let's define a global $this_section variable
  260. // which will then be usable from the banner and header scripts
  261. $this_section = SECTION_GLOBAL;
  262. // include the local (contextual) parameters of this course or section
  263. require $includePath.'/local.inc.php';
  264. //Include Chamilo Mail conf this is added here because the api_get_setting works
  265. //Fixes bug in Chamilo 1.8.7.1 array was not set
  266. $administrator['email'] = isset($administrator['email']) ? $administrator['email'] : 'admin@example.com';
  267. $administrator['name'] = isset($administrator['name']) ? $administrator['name'] : 'Admin';
  268. $mail_conf = api_get_path(CONFIGURATION_PATH).'mail.conf.php';
  269. if (file_exists($mail_conf)) {
  270. require_once $mail_conf;
  271. }
  272. // ===== "who is logged in?" module section =====
  273. // check and modify the date of user in the track.e.online table
  274. if (!$x = strpos($_SERVER['PHP_SELF'], 'whoisonline.php')) {
  275. LoginCheck(isset($_user['user_id']) ? $_user['user_id'] : '');
  276. }
  277. // ===== end "who is logged in?" module section =====
  278. if (api_get_setting('server_type') == 'test') {
  279. /*
  280. Server type is test
  281. - high error reporting level
  282. - only do addslashes on $_GET and $_POST
  283. */
  284. if (IS_PHP_53) {
  285. error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  286. } else {
  287. error_reporting(E_ALL & ~E_NOTICE);
  288. }
  289. } else {
  290. /*
  291. Server type is not test
  292. - normal error reporting level
  293. - full fake register globals block
  294. */
  295. error_reporting(E_COMPILE_ERROR | E_ERROR | E_CORE_ERROR);
  296. // TODO: These obsolete variables $HTTP_* to be check whether they are actually used.
  297. if (!isset($HTTP_GET_VARS)) { $HTTP_GET_VARS = $_GET; }
  298. if (!isset($HTTP_POST_VARS)) { $HTTP_POST_VARS = $_POST; }
  299. if (!isset($HTTP_POST_FILES)) { $HTTP_POST_FILES = $_FILES; }
  300. if (!isset($HTTP_SESSION_VARS)) { $HTTP_SESSION_VARS = $_SESSION; }
  301. if (!isset($HTTP_SERVER_VARS)) { $HTTP_SERVER_VARS = $_SERVER; }
  302. // Register SESSION variables into $GLOBALS
  303. if (sizeof($HTTP_SESSION_VARS)) {
  304. if (!is_array($_SESSION)) {
  305. $_SESSION = array();
  306. }
  307. foreach ($HTTP_SESSION_VARS as $key => $val) {
  308. $_SESSION[$key] = $HTTP_SESSION_VARS[$key];
  309. $GLOBALS[$key] = $HTTP_SESSION_VARS[$key];
  310. }
  311. }
  312. // Register SERVER variables into $GLOBALS
  313. if (sizeof($HTTP_SERVER_VARS)) {
  314. $_SERVER = array();
  315. foreach ($HTTP_SERVER_VARS as $key => $val) {
  316. $_SERVER[$key] = $HTTP_SERVER_VARS[$key];
  317. if (!isset($_SESSION[$key]) && $key != 'includePath' && $key != 'rootSys' && $key!= 'lang_path' && $key!= 'extAuthSource' && $key!= 'thisAuthSource' && $key!= 'main_configuration_file_path' && $key!= 'phpDigIncCn' && $key!= 'drs') {
  318. $GLOBALS[$key]=$HTTP_SERVER_VARS[$key];
  319. }
  320. }
  321. }
  322. }
  323. /* LOAD LANGUAGE FILES SECTION */
  324. // if we use the javascript version (without go button) we receive a get
  325. // if we use the non-javascript version (with the go button) we receive a post
  326. $user_language = '';
  327. if (!empty($_GET['language'])) {
  328. $user_language = $_GET['language'];
  329. }
  330. if (!empty($_POST['language_list'])) {
  331. $user_language = str_replace('index.php?language=', '', $_POST['language_list']);
  332. }
  333. // Include all files (first english and then current interface language)
  334. $langpath = api_get_path(SYS_LANG_PATH);
  335. /* This will only work if we are in the page to edit a sub_language */
  336. if (isset($this_script) && $this_script == 'sub_language') {
  337. require_once '../admin/sub_language.class.php';
  338. // getting the arrays of files i.e notification, trad4all, etc
  339. $language_files_to_load = SubLanguageManager:: get_lang_folder_files_list(api_get_path(SYS_LANG_PATH).'english', true);
  340. //getting parent info
  341. $parent_language = SubLanguageManager::get_all_information_of_language($_REQUEST['id']);
  342. //getting sub language info
  343. $sub_language = SubLanguageManager::get_all_information_of_language($_REQUEST['sub_language_id']);
  344. $english_language_array = $parent_language_array = $sub_language_array = array();
  345. foreach ($language_files_to_load as $language_file_item) {
  346. $lang_list_pre = array_keys($GLOBALS);
  347. //loading english
  348. $path = $langpath.'english/'.$language_file_item.'.inc.php';
  349. if (file_exists($path)) {
  350. include $path;
  351. }
  352. $lang_list_post = array_keys($GLOBALS);
  353. $lang_list_result = array_diff($lang_list_post, $lang_list_pre);
  354. unset($lang_list_pre);
  355. // english language array
  356. $english_language_array[$language_file_item] = compact($lang_list_result);
  357. //cleaning the variables
  358. foreach ($lang_list_result as $item) {
  359. unset(${$item});
  360. }
  361. $parent_file = $langpath.$parent_language['dokeos_folder'].'/'.$language_file_item.'.inc.php';
  362. if (file_exists($parent_file) && is_file($parent_file)) {
  363. include_once $parent_file;
  364. }
  365. // parent language array
  366. $parent_language_array[$language_file_item] = compact($lang_list_result);
  367. //cleaning the variables
  368. foreach($lang_list_result as $item) {
  369. unset(${$item});
  370. }
  371. $sub_file = $langpath.$sub_language['dokeos_folder'].'/'.$language_file_item.'.inc.php';
  372. if (file_exists($sub_file) && is_file($sub_file)) {
  373. include $sub_file;
  374. }
  375. // sub language array
  376. $sub_language_array[$language_file_item] = compact($lang_list_result);
  377. //cleaning the variables
  378. foreach($lang_list_result as $item) {
  379. unset(${$item});
  380. }
  381. }
  382. }
  383. // Checking if we have a valid language. If not we set it to the platform language.
  384. $valid_languages = api_get_languages();
  385. if (!empty($valid_languages)) {
  386. if (!in_array($user_language, $valid_languages['folder'])) {
  387. $user_language = api_get_setting('platformLanguage');
  388. }
  389. $language_priority1 = api_get_setting('languagePriority1');
  390. $language_priority2 = api_get_setting('languagePriority2');
  391. $language_priority3 = api_get_setting('languagePriority3');
  392. $language_priority4 = api_get_setting('languagePriority4');
  393. if (in_array($user_language, $valid_languages['folder']) && (isset($_GET['language']) || isset($_POST['language_list']))) {
  394. $user_selected_language = $user_language; // $_GET['language'];
  395. $_SESSION['user_language_choice'] = $user_selected_language;
  396. $platformLanguage = $user_selected_language;
  397. }
  398. if (!empty($language_priority4) && api_get_language_from_type($language_priority4) !== false ) {
  399. $language_interface = api_get_language_from_type($language_priority4);
  400. } else {
  401. $language_interface = api_get_setting('platformLanguage');
  402. }
  403. if (!empty($language_priority3) && api_get_language_from_type($language_priority3) !== false ) {
  404. $language_interface = api_get_language_from_type($language_priority3);
  405. } else {
  406. if (isset($_SESSION['user_language_choice'])) {
  407. $language_interface = $_SESSION['user_language_choice'];
  408. }
  409. }
  410. if (!empty($language_priority2) && api_get_language_from_type($language_priority2) !== false ) {
  411. $language_interface = api_get_language_from_type($language_priority2);
  412. } else {
  413. if (isset($_user['language'])) {
  414. $language_interface = $_user['language'];
  415. }
  416. }
  417. if (!empty($language_priority1) && api_get_language_from_type($language_priority1) !== false ) {
  418. $language_interface = api_get_language_from_type($language_priority1);
  419. } else {
  420. if ($_course['language']) {
  421. $language_interface = $_course['language'];
  422. }
  423. }
  424. }
  425. // Sometimes the variable $language_interface is changed
  426. // temporarily for achieving translation in different language.
  427. // We need to save the genuine value of this variable and
  428. // to use it within the function get_lang(...).
  429. $language_interface_initial_value = $language_interface;
  430. /**
  431. * Include all necessary language files
  432. * - trad4all
  433. * - notification
  434. * - custom tool language files
  435. */
  436. $language_files = array();
  437. $language_files[] = 'trad4all';
  438. $language_files[] = 'notification';
  439. $language_files[] = 'accessibility';
  440. if (isset($language_file)) {
  441. if (!is_array($language_file)) {
  442. $language_files[] = $language_file;
  443. } else {
  444. $language_files = array_merge($language_files, $language_file);
  445. }
  446. }
  447. // if a set of language files has been properly defined
  448. if (is_array($language_files)) {
  449. // if the sub-language feature is on
  450. if (api_get_setting('allow_use_sub_language') == 'true') {
  451. require_once api_get_path(SYS_CODE_PATH).'admin/sub_language.class.php';
  452. $parent_path = SubLanguageManager::get_parent_language_path($language_interface);
  453. foreach ($language_files as $index => $language_file) {
  454. // include English
  455. include $langpath.'english/'.$language_file.'.inc.php';
  456. // prepare string for current language and its parent
  457. $lang_file = $langpath.$language_interface.'/'.$language_file.'.inc.php';
  458. $parent_lang_file = $langpath.$parent_path.'/'.$language_file.'.inc.php';
  459. // load the parent language file first
  460. if (file_exists($parent_lang_file)) {
  461. include $parent_lang_file;
  462. }
  463. // overwrite the parent language translations if there is a child
  464. if (file_exists($lang_file)) {
  465. include $lang_file;
  466. }
  467. }
  468. } else {
  469. // if the sub-languages feature is not on, then just load the
  470. // set language interface
  471. foreach ($language_files as $index => $language_file) {
  472. // include English
  473. include $langpath.'english/'.$language_file.'.inc.php';
  474. // prepare string for current language
  475. $langfile = $langpath.$language_interface.'/'.$language_file.'.inc.php';
  476. if (file_exists($langfile)) {
  477. include $langfile;
  478. }
  479. }
  480. }
  481. }
  482. // The global variable $charset has been defined in a language file too (trad4all.inc.php), this is legacy situation.
  483. // So, we have to reassign this variable again in order to keep its value right.
  484. $charset = $charset_initial_value;
  485. // The global variable $text_dir has been defined in the language file trad4all.inc.php.
  486. // For determing text direction correspondent to the current language we use now information from the internationalization library.
  487. $text_dir = api_get_text_direction();
  488. //Update of the logout_date field in the table track_e_login (needed for the calculation of the total connection time)
  489. if (!isset($_SESSION['login_as']) && isset($_user)) {
  490. // if $_SESSION['login_as'] is set, then the user is an admin logged as the user
  491. $tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
  492. $sql_last_connection = "SELECT login_id, login_date FROM $tbl_track_login WHERE login_user_id='".$_user["user_id"]."' ORDER BY login_date DESC LIMIT 0,1";
  493. $q_last_connection = Database::query($sql_last_connection);
  494. if (Database::num_rows($q_last_connection) > 0) {
  495. $i_id_last_connection = Database::result($q_last_connection, 0, 'login_id');
  496. // is the latest logout_date still relevant?
  497. $sql_logout_date = "SELECT logout_date FROM $tbl_track_login WHERE login_id=$i_id_last_connection";
  498. $q_logout_date = Database::query($sql_logout_date);
  499. $res_logout_date = convert_sql_date(Database::result($q_logout_date,0,'logout_date'));
  500. if ($res_logout_date < time() - $_configuration['session_lifetime']) {
  501. // it isn't, we should create a fresh entry
  502. event_login();
  503. // now that it's created, we can get its ID and carry on
  504. $q_last_connection = Database::query($sql_last_connection);
  505. $i_id_last_connection = Database::result($q_last_connection, 0, 'login_id');
  506. }
  507. $s_sql_update_logout_date = "UPDATE $tbl_track_login SET logout_date=NOW() WHERE login_id='$i_id_last_connection'";
  508. Database::query($s_sql_update_logout_date);
  509. }
  510. }
  511. // Add language_measure_frequency to your main/inc/conf/configuration.php in
  512. // order to generate language variables frequency measurements (you can then
  513. // see them through main/cron/lang/langstats.php)
  514. // The langstat object will then be used in the get_lang() function.
  515. // This block can be removed to speed things up a bit as it should only ever
  516. // be used in development versions.
  517. if ($_configuration['language_measure_frequency'] == 1) {
  518. require_once api_get_path(SYS_CODE_PATH).'/cron/lang/langstats.class.php';
  519. $langstats = new langstats();
  520. }
  521. //Default quota for the course documents folder
  522. $default_quota = api_get_setting('default_document_quotum');
  523. //Just in case the setting is not correctly set
  524. if (empty($default_quota)) {
  525. $default_quota = 100000000;
  526. }
  527. define('DEFAULT_DOCUMENT_QUOTA', $default_quota);