global.inc.php 18 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505
  1. <?php
  2. /**
  3. ==============================================================================
  4. * It is recommended that ALL dokeos 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 dokeos.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 Dokeos config page.
  20. *
  21. ==============================================================================
  22. */
  23. // Showing/hiding error codes in global error messages.
  24. define('SHOW_ERROR_CODES', false);
  25. // PHP version requirement.
  26. define('REQUIRED_PHP_VERSION', '5');
  27. // Determine the directory path where this current file lies.
  28. // This path will be useful to include the other intialisation files.
  29. $includePath = dirname(__FILE__);
  30. // PHP version check.
  31. if (!function_exists('version_compare') || version_compare(phpversion(), REQUIRED_PHP_VERSION, '<')) {
  32. $global_error_code = 1;
  33. // Incorrect PHP version.
  34. require $includePath.'/global_error_message.inc.php';
  35. die();
  36. }
  37. // @todo Isn't this file renamed to configuration.inc.php yet?
  38. // Include the main Dokeos platform configuration file.
  39. $main_configuration_file_path = $includePath.'/conf/configuration.php';
  40. $already_installed = false;
  41. if (file_exists($main_configuration_file_path)) {
  42. require_once $main_configuration_file_path;
  43. $already_installed = true;
  44. } else {
  45. $_configuration = array();
  46. }
  47. // Ensure that _configuration is in the global scope before loading
  48. // main_api.lib.php. This is particularly helpful for unit tests
  49. if (!isset($GLOBALS['_configuration'])) {
  50. $GLOBALS['_configuration'] = $_configuration;
  51. }
  52. // Include the main Dokeos platform library file.
  53. require_once $includePath.'/lib/main_api.lib.php';
  54. // Do not over-use this variable. It is only for this script's local use.
  55. $lib_path = api_get_path(LIBRARY_PATH);
  56. // Start session.
  57. api_session_start($already_installed);
  58. if (!$already_installed) {
  59. $global_error_code = 2;
  60. // The system has not been installed yet.
  61. require $includePath.'/global_error_message.inc.php';
  62. die();
  63. }
  64. // Fix bug in IIS that doesn't fill the $_SERVER['REQUEST_URI'].
  65. api_request_uri();
  66. // Add the path to the pear packages to the include path
  67. ini_set('include_path', api_create_include_path_setting());
  68. // This is for compatibility with MAC computers.
  69. ini_set('auto_detect_line_endings', '1');
  70. // Include the libraries that are necessary everywhere
  71. require_once $lib_path.'database.lib.php';
  72. require_once $lib_path.'display.lib.php';
  73. require_once $lib_path.'text.lib.php';
  74. require_once $lib_path.'security.lib.php';
  75. require_once $lib_path.'events.lib.inc.php';
  76. // @todo: this shouldn't be done here. It should be stored correctly during installation.
  77. if (empty($_configuration['statistics_database']) && $already_installed) {
  78. $_configuration['statistics_database'] = $_configuration['main_database'];
  79. }
  80. // Connect to the server database and select the main dokeos database.
  81. if (!($dokeos_database_connection = @mysql_connect($_configuration['db_host'], $_configuration['db_user'], $_configuration['db_password']))) {
  82. $global_error_code = 3;
  83. // The database server is not available or credentials are invalid.
  84. require $includePath.'/global_error_message.inc.php';
  85. die();
  86. }
  87. if (!$_configuration['db_host']) {
  88. $global_error_code = 4;
  89. // A configuration option about database server is missing.
  90. require $includePath.'/global_error_message.inc.php';
  91. die();
  92. }
  93. // The Dokeos system has not been designed to use special SQL modes that were introduced since MySQL 5.
  94. Database::query("set session sql_mode='';", __FILE__, __LINE__);
  95. if (!mysql_select_db($_configuration['main_database'], $dokeos_database_connection)) {
  96. $global_error_code = 5;
  97. // Connection to the main Dokeos database is impossible, it might be missing or restricted or its configuration option might be incorrect.
  98. require $includePath.'/global_error_message.inc.php';
  99. die();
  100. }
  101. /*
  102. --------------------------------------------
  103. Initialization of the default encodings
  104. --------------------------------------------
  105. */
  106. // The platform's character set must be retrieved at this early moment.
  107. $sql = "SELECT selected_value FROM settings_current WHERE variable = 'platform_charset';";
  108. $result = Database::query($sql, __FILE__, __LINE__);
  109. while ($row = @Database::fetch_array($result)) {
  110. $charset = $row[0];
  111. }
  112. if (empty($charset)) {
  113. $charset = 'ISO-8859-15';
  114. }
  115. // Preserving the value of the global variable $charset.
  116. $charset_initial_value = $charset;
  117. // Initialization of the internationalization library.
  118. api_initialize_internationalization();
  119. // Initialization of the default encoding that will be used by the multibyte string routines in the internationalization library.
  120. api_set_internationalization_default_encoding($charset);
  121. /*
  122. --------------------------------------------
  123. RETRIEVING ALL THE DOKEOS CONFIG SETTINGS
  124. --------------------------------------------
  125. */
  126. if (!empty($_configuration['multiple_access_urls'])) {
  127. $_configuration['access_url'] = 1;
  128. $access_urls = api_get_access_urls();
  129. $protocol = ((!empty($_SERVER['HTTPS']) && strtoupper($_SERVER['HTTPS']) != 'OFF') ? 'https' : 'http').'://';
  130. $request_url1 = $protocol.$_SERVER['SERVER_NAME'].'/';
  131. $request_url2 = $protocol.$_SERVER['HTTP_HOST'].'/';
  132. foreach ($access_urls as $details) {
  133. if ($request_url1 == $details['url'] or $request_url2 == $details['url']) {
  134. $_configuration['access_url'] = $details['id'];
  135. }
  136. }
  137. } else {
  138. $_configuration['access_url'] = 1;
  139. }
  140. // access_url == 1 is the default dokeos location
  141. if ($_configuration['access_url'] != 1) {
  142. $url_info = api_get_access_url($_configuration['access_url']);
  143. if ($url_info['active'] == 1) {
  144. $settings_by_access = api_get_settings(null, 'list', $_configuration['access_url'], 1);
  145. foreach ($settings_by_access as $row) {
  146. if (empty($row['variable'])) {
  147. $row['variable'] = 0;
  148. }
  149. if (empty($row['subkey'])) {
  150. $row['subkey'] = 0;
  151. }
  152. if (empty($row['category'])) {
  153. $row['category'] = 0;
  154. }
  155. $settings_by_access_list[$row['variable']][$row['subkey']][$row['category']] = $row;
  156. }
  157. }
  158. }
  159. $result = api_get_settings(null, 'list', 1);
  160. foreach ($result as $row) {
  161. if ($_configuration['access_url'] != 1) {
  162. if ($url_info['active'] == 1) {
  163. $var = empty($row['variable']) ? 0 : $row['variable'];
  164. $subkey = empty($row['subkey']) ? 0 : $row['subkey'];
  165. $category = empty($row['category']) ? 0 : $row['category'];
  166. }
  167. if ($row['access_url_changeable'] == 1 && $url_info['active'] == 1) {
  168. if ($settings_by_access_list[$var][$subkey][$category]['selected_value'] != '') {
  169. if ($row['subkey'] == null) {
  170. $_setting[$row['variable']]= $settings_by_access_list[$var][$subkey][$category]['selected_value'];
  171. } else {
  172. $_setting[$row['variable']][$row['subkey']] = $settings_by_access_list[$var][$subkey][$category]['selected_value'];
  173. }
  174. } else {
  175. if ($row['subkey'] == null) {
  176. $_setting[$row['variable']] = $row['selected_value'];
  177. } else {
  178. $_setting[$row['variable']][$row['subkey']] = $row['selected_value'];
  179. }
  180. }
  181. } else {
  182. if ($row['subkey'] == null) {
  183. $_setting[$row['variable']] = $row['selected_value'];
  184. } else {
  185. $_setting[$row['variable']][$row['subkey']] = $row['selected_value'];
  186. }
  187. }
  188. } else {
  189. if ($row['subkey'] == null) {
  190. $_setting[$row['variable']] = $row['selected_value'];
  191. } else {
  192. $_setting[$row['variable']][$row['subkey']] = $row['selected_value'];
  193. }
  194. }
  195. }
  196. $result = api_get_settings('Plugins', 'list', $_configuration['access_url']);
  197. $_plugins = array();
  198. foreach ($result as $row) {
  199. $key = $row['variable'];
  200. if (is_string($_setting[$key])) {
  201. $_setting[$key] = array();
  202. }
  203. $_setting[$key][] = $row['selected_value'];
  204. $_plugins[$key][] = $row['selected_value'];
  205. }
  206. //load array Kses for Htmlpurifier
  207. require_once $lib_path.'formvalidator/Rule/allowed_tags.inc.php';
  208. //load htmpurifier
  209. require_once $lib_path.'htmlpurifier/library/HTMLPurifier.auto.php';
  210. // include the local (contextual) parameters of this course or section
  211. require $includePath.'/local.inc.php';
  212. // ===== "who is logged in?" module section =====
  213. require_once $lib_path.'online.inc.php';
  214. // check and modify the date of user in the track.e.online table
  215. if (!$x = strpos($_SERVER['PHP_SELF'], 'whoisonline.php')) {
  216. LoginCheck(isset($_user['user_id']) ? $_user['user_id'] : '', $_configuration['statistics_database']);
  217. }
  218. // ===== end "who is logged in?" module section =====
  219. if (api_get_setting('server_type') == 'test') {
  220. /*
  221. --------------------------------------------
  222. Server type is test
  223. - high error reporting level
  224. - only do addslashes on $_GET and $_POST
  225. --------------------------------------------
  226. */
  227. if (IS_PHP_53) {
  228. error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
  229. } else {
  230. error_reporting(E_ALL & ~E_NOTICE);
  231. }
  232. //error_reporting(E_ALL);
  233. //Addslashes to all $_GET variables
  234. foreach ($_GET as $key => $val) {
  235. if (!ini_get('magic_quotes_gpc')) {
  236. if (is_string($val)) {
  237. $_GET[$key] = addslashes($val);
  238. }
  239. }
  240. }
  241. //Addslashes to all $_POST variables
  242. foreach ($_POST as $key => $val) {
  243. if (!ini_get('magic_quotes_gpc')) {
  244. if (is_string($val)) {
  245. $_POST[$key] = addslashes($val);
  246. }
  247. }
  248. }
  249. } else {
  250. /*
  251. --------------------------------------------
  252. Server type is not test
  253. - normal error reporting level
  254. - full fake register globals block
  255. --------------------------------------------
  256. */
  257. error_reporting(E_COMPILE_ERROR | E_ERROR | E_CORE_ERROR);
  258. // TODO: These obsolete variables $HTTP_* to be check whether they are actually used.
  259. if (!isset($HTTP_GET_VARS)) { $HTTP_GET_VARS = $_GET; }
  260. if (!isset($HTTP_POST_VARS)) { $HTTP_POST_VARS = $_POST; }
  261. if (!isset($HTTP_POST_FILES)) { $HTTP_POST_FILES = $_FILES; }
  262. if (!isset($HTTP_SESSION_VARS)) { $HTTP_SESSION_VARS = $_SESSION; }
  263. if (!isset($HTTP_SERVER_VARS)) { $HTTP_SERVER_VARS = $_SERVER; }
  264. // Register SESSION variables into $GLOBALS
  265. if (sizeof($HTTP_SESSION_VARS)) {
  266. if (!is_array($_SESSION)) {
  267. $_SESSION = array();
  268. }
  269. foreach ($HTTP_SESSION_VARS as $key => $val) {
  270. $_SESSION[$key] = $HTTP_SESSION_VARS[$key];
  271. $GLOBALS[$key] = $HTTP_SESSION_VARS[$key];
  272. }
  273. }
  274. // Register SERVER variables into $GLOBALS
  275. if (sizeof($HTTP_SERVER_VARS)) {
  276. $_SERVER = array();
  277. foreach ($HTTP_SERVER_VARS as $key => $val) {
  278. $_SERVER[$key] = $HTTP_SERVER_VARS[$key];
  279. if (!isset($_SESSION[$key]) && $key != 'includePath' && $key != 'rootSys' && $key!= 'clarolineRepositorySys' && $key!= 'lang_path' && $key!= 'extAuthSource' && $key!= 'thisAuthSource' && $key!= 'main_configuration_file_path' && $key!= 'phpDigIncCn' && $key!= 'drs') {
  280. $GLOBALS[$key]=$HTTP_SERVER_VARS[$key];
  281. }
  282. }
  283. }
  284. }
  285. /*
  286. -----------------------------------------------------------
  287. LOAD LANGUAGE FILES SECTION
  288. -----------------------------------------------------------
  289. */
  290. // if we use the javascript version (without go button) we receive a get
  291. // if we use the non-javascript version (with the go button) we receive a post
  292. $user_language = '';
  293. if (!empty($_GET['language'])) {
  294. $user_language = $_GET['language'];
  295. }
  296. if (!empty($_POST['language_list'])) {
  297. $user_language = str_replace('index.php?language=', '', $_POST['language_list']);
  298. }
  299. // Include all files (first english and then current interface language)
  300. $langpath = api_get_path(SYS_CODE_PATH).'lang/';
  301. /* This will only work if we are in the page to edit a sub_language */
  302. if (api_get_self() == api_get_path(REL_PATH).'main/admin/sub_language.php' || api_get_self() == api_get_path(REL_PATH).'main/admin/sub_language_ajax.inc.php') {
  303. require_once '../admin/sub_language.class.php';
  304. // getting the arrays of files i.e notification, trad4all, etc
  305. $language_files_to_load = SubLanguageManager::get_all_data_of_dokeos_folder(api_get_path(SYS_LANG_PATH).'english', true);
  306. //getting parent info
  307. $parent_language = SubLanguageManager::get_all_information_of_language(intval($_REQUEST['id']));
  308. //getting sub language info
  309. $sub_language = SubLanguageManager::get_all_information_of_language(intval($_REQUEST['sub_language_id']));
  310. $english_language_array = $parent_language_array = $sub_language_array = array();
  311. foreach ($language_files_to_load as $language_file_item) {
  312. $lang_list_pre = array_keys($GLOBALS);
  313. include $langpath.'english/'.$language_file_item.'.inc.php'; //loading english
  314. $lang_list_post = array_keys($GLOBALS);
  315. $lang_list_result = array_diff($lang_list_post, $lang_list_pre);
  316. unset($lang_list_pre);
  317. // ------ english language array
  318. $english_language_array[$language_file_item] = compact($lang_list_result);
  319. //cleaning the variables
  320. foreach($lang_list_result as $item) {
  321. unset(${$item});
  322. }
  323. $parent_file = $langpath.$parent_language['dokeos_folder'].'/'.$language_file_item.'.inc.php';
  324. if (is_file($parent_file)) {
  325. include $parent_file;
  326. }
  327. // ------ parent language array
  328. $parent_language_array[$language_file_item] = compact($lang_list_result);
  329. //cleaning the variables
  330. foreach($lang_list_result as $item) {
  331. unset(${$item});
  332. }
  333. $sub_file = $langpath.$sub_language['dokeos_folder'].'/'.$language_file_item.'.inc.php';
  334. if (is_file($sub_file)) {
  335. include $sub_file;
  336. }
  337. // ------ sub language array
  338. $sub_language_array[$language_file_item] = compact($lang_list_result);
  339. //cleaning the variables
  340. foreach($lang_list_result as $item) {
  341. unset(${$item});
  342. }
  343. }
  344. }
  345. // Checking if we have a valid language. If not we set it to the platform language.
  346. $valid_languages = api_get_languages();
  347. if (!in_array($user_language, $valid_languages['folder'])) {
  348. $user_language = api_get_setting('platformLanguage');
  349. }
  350. if (in_array($user_language, $valid_languages['folder']) && (isset($_GET['language']) || isset($_POST['language_list']))) {
  351. $user_selected_language = $user_language; // $_GET['language'];
  352. $_SESSION['user_language_choice'] = $user_selected_language;
  353. $platformLanguage = $user_selected_language;
  354. } else {
  355. $platformLanguage = api_get_setting('platformLanguage');
  356. }
  357. if (isset($_SESSION['user_language_choice'])) {
  358. $language_interface = $_SESSION['user_language_choice'];
  359. } else {
  360. $language_interface = api_get_setting('platformLanguage');
  361. }
  362. if (isset($_user['language'])) {
  363. $language_interface = $_user['language'];
  364. }
  365. if ($_course['language']) {
  366. $language_interface = $_course['language'];
  367. }
  368. // Sometimes the variable $language_interface is changed
  369. // temporarily for achieving translation in different language.
  370. // We need to save the genuine value of this variable and
  371. // to use it within the function get_lang(...).
  372. $language_interface_initial_value = $language_interface;
  373. /*
  374. * Include all necessary language files
  375. * - trad4all
  376. * - notification
  377. * - custom tool language files
  378. */
  379. $language_files = array();
  380. $language_files[] = 'trad4all';
  381. $language_files[] = 'notification';
  382. $language_files[] = 'accessibility';
  383. if (isset($language_file)) {
  384. if (!is_array($language_file)) {
  385. $language_files[] = $language_file;
  386. } else {
  387. $language_files = array_merge($language_files, $language_file);
  388. }
  389. }
  390. if (is_array($language_files)) {
  391. if (api_get_setting('allow_use_sub_language') == 'true') {
  392. foreach ($language_files as $index => $language_file) {
  393. include $langpath.'english/'.$language_file.'.inc.php';
  394. $langfile = $langpath.$language_interface.'/'.$language_file.'.inc.php';
  395. $tbl_admin_languages = Database :: get_main_table(TABLE_MAIN_LANGUAGE);
  396. $sql_sub_language = 'SELECT dokeos_folder FROM '.$tbl_admin_languages.' WHERE parent_id=(SELECT id FROM '.$tbl_admin_languages.' WHERE dokeos_folder="'.Database::escape_string($language_interface).'" AND ISNULL(parent_id))';
  397. $rs_sub_language = Database::query($sql_sub_language,__FILE__,__LINE__);
  398. $num_row_sub_language = Database::num_rows($rs_sub_language);
  399. if (file_exists($langfile)) {
  400. include $langfile;
  401. for ($i = 0; $i < $num_row_sub_language; $i++) {
  402. $row_sub_language = Database::result($rs_sub_language, $i, 'dokeos_folder');
  403. $sub_langfile = $langpath.$row_sub_language.'/'.$language_file.'.inc.php';
  404. if (file_exists($sub_langfile)) {
  405. include $sub_langfile;
  406. }
  407. }
  408. }
  409. }
  410. } else {
  411. foreach ($language_files as $index => $language_file) {
  412. include $langpath.'english/'.$language_file.'.inc.php';
  413. $langfile = $langpath.$language_interface.'/'.$language_file.'.inc.php';
  414. if (file_exists($langfile)) {
  415. include $langfile;
  416. }
  417. }
  418. }
  419. }
  420. // The global variable $charset has been defined in a language file too (trad4all.inc.php), this is legacy situation.
  421. // So, we have to reassign this variable again in order to keep its value right.
  422. $charset = $charset_initial_value;
  423. //Update of the logout_date field in the table track_e_login (needed for the calculation of the total connection time)
  424. if ($_configuration['tracking_enabled'] && !isset($_SESSION['login_as']) && isset($_user)) {
  425. // if $_SESSION['login_as'] is set, then the user is an admin logged as the user
  426. $tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
  427. $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";
  428. $q_last_connection = Database::query($sql_last_connection);
  429. if (Database::num_rows($q_last_connection) > 0) {
  430. $i_id_last_connection = Database::result($q_last_connection, 0, 'login_id');
  431. $s_sql_update_logout_date = "UPDATE $tbl_track_login SET logout_date=NOW() WHERE login_id='$i_id_last_connection'";
  432. Database::query($s_sql_update_logout_date);
  433. }
  434. }