index.php 36 KB

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  1. <?php
  2. /* For licensing terms, see /license.txt */
  3. /**
  4. * @package chamilo.main
  5. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University, Refactoring
  6. * @version $Id: index.php 22368 2009-07-24 23:25:57Z iflorespaz $
  7. * @todo check the different @todos in this page and really do them
  8. * @todo check if the news management works as expected
  9. */
  10. // Only this script should have this constant defined. This is used to activate the javascript that
  11. // gives the login name automatic focus in header.inc.html.
  12. /** @todo Couldn't this be done using the $HtmlHeadXtra array? */
  13. define('DOKEOS_HOMEPAGE', true);
  14. $language_file = array('courses', 'index');
  15. /* Flag forcing the 'current course' reset, as we're not inside a course anymore */
  16. // Maybe we should change this into an api function? an example: Coursemanager::unset();
  17. $cidReset = true;
  18. /* Included libraries */
  19. /** @todo make all the library files consistent, use filename.lib.php and not filename.lib.inc.php */
  20. require_once 'main/inc/global.inc.php';
  21. require_once api_get_path(LIBRARY_PATH).'course.lib.php';
  22. require_once api_get_path(LIBRARY_PATH).'events.lib.inc.php';
  23. require_once api_get_path(LIBRARY_PATH).'system_announcements.lib.php';
  24. require_once api_get_path(LIBRARY_PATH).'groupmanager.lib.php';
  25. require_once api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php';
  26. require_once 'main/chat/chat_functions.lib.php';
  27. $loginFailed = isset($_GET['loginFailed']) ? true : isset($loginFailed);
  28. $setting_show_also_closed_courses = api_get_setting('show_closed_courses') == 'true';
  29. // the section (for the tabs)
  30. $this_section = SECTION_CAMPUS;
  31. unset($_SESSION['this_section']);//for hmtl editor repository
  32. /* Action Handling */
  33. /** @todo Wouldn't it make more sense if this would be done in local.inc.php so that local.inc.php become the only place where authentication is done?
  34. * by doing this you could logout from any page instead of only from index.php. From the moment there is a logout=true in the url you will be logged out
  35. * this can be usefull when you are on an open course and you need to log in to edit something and you immediately want to check how anonymous users
  36. * will see it.
  37. */
  38. $my_user_id = api_get_user_id();
  39. if (!empty($_GET['logout'])) {
  40. logout();
  41. }
  42. /* Table definitions */
  43. $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
  44. $main_category_table = Database :: get_main_table(TABLE_MAIN_CATEGORY);
  45. $track_login_table = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
  46. /* Constants and CONFIGURATION parameters */
  47. /** @todo these configuration settings should move to the dokeos config settings */
  48. /** defines wether or not anonymous visitors can see a list of the courses on the Dokeos homepage that are open to the world */
  49. $_setting['display_courses_to_anonymous_users'] = 'true';
  50. /** @todo remove this piece of code because this is not used */
  51. if (isset($_user['user_id'])) {
  52. $nameTools = api_get_setting('siteName');
  53. }
  54. /* LOGIN */
  55. /**
  56. * @todo This piece of code should probably move to local.inc.php where the actual login / logout procedure is handled.
  57. * @todo consider removing this piece of code because does nothing.
  58. */
  59. if (isset($_GET['submitAuth']) && $_GET['submitAuth'] == 1) {
  60. // nice lie!!!
  61. echo 'Attempted breakin - sysadmins notified.';
  62. session_destroy();
  63. die();
  64. }
  65. // Delete session neccesary for legal terms
  66. if (api_get_setting('allow_terms_conditions') == 'true') {
  67. unset($_SESSION['update_term_and_condition']);
  68. unset($_SESSION['info_current_user']);
  69. }
  70. /**
  71. * @todo This piece of code should probably move to local.inc.php where the actual login procedure is handled.
  72. * @todo check if this code is used. I think this code is never executed because after clicking the submit button
  73. * the code does the stuff in local.inc.php and then redirects to index.php or user_portal.php depending
  74. * on api_get_setting('page_after_login')
  75. */
  76. if (!empty($_POST['submitAuth'])) {
  77. // the user is already authenticated, we now find the last login of the user.
  78. if (isset ($_user['user_id'])) {
  79. $sql_last_login = "SELECT UNIX_TIMESTAMP(login_date)
  80. FROM $track_login_table
  81. WHERE login_user_id = '".$_user['user_id']."'
  82. ORDER BY login_date DESC LIMIT 1";
  83. $result_last_login = Database::query($sql_last_login);
  84. if (!$result_last_login) {
  85. if (Database::num_rows($result_last_login) > 0) {
  86. $user_last_login_datetime = Database::fetch_array($result_last_login);
  87. $user_last_login_datetime = $user_last_login_datetime[0];
  88. api_session_register('user_last_login_datetime');
  89. }
  90. }
  91. Database::free_result($result_last_login);
  92. //event_login();
  93. if (api_is_platform_admin()) {
  94. // decode all open event informations and fill the track_c_* tables
  95. include api_get_path(LIBRARY_PATH).'stats.lib.inc.php';
  96. decodeOpenInfos();
  97. }
  98. }
  99. } // end login -- if ($_POST['submitAuth'])
  100. else {
  101. // only if login form was not sent because if the form is sent the user was already on the page.
  102. event_open();
  103. }
  104. // the header
  105. $header_title = get_lang('Homepage');
  106. $sitename = api_get_setting('siteName');
  107. if (!empty($sitename)) {
  108. $header_title = null;
  109. }
  110. Display::display_header($header_title);
  111. /*
  112. MAIN CODE
  113. */
  114. echo '<div class="maincontent" id="content">';
  115. // Plugins for loginpage_main AND campushomepage_main
  116. if (!api_get_user_id()) {
  117. api_plugin('loginpage_main');
  118. } else {
  119. api_plugin('campushomepage_main');
  120. }
  121. $home = 'home/';
  122. if ($_configuration['multiple_access_urls']) {
  123. $access_url_id = api_get_current_access_url_id();
  124. if ($access_url_id != -1){
  125. $url_info = api_get_access_url($access_url_id);
  126. $url = api_remove_trailing_slash(preg_replace('/https?:\/\//i', '', $url_info['url']));
  127. $clean_url = replace_dangerous_char($url);
  128. $clean_url = str_replace('/', '-', $clean_url);
  129. $clean_url .= '/';
  130. $home_old = 'home/';
  131. $home = 'home/'.$clean_url;
  132. }
  133. }
  134. // Including the page for the news
  135. $page_included = false;
  136. if (!empty($_GET['include']) && preg_match('/^[a-zA-Z0-9_-]*\.html$/', $_GET['include'])) {
  137. $open = @(string)file_get_contents(api_get_path(SYS_PATH).$home.$_GET['include']);
  138. $open = api_to_system_encoding($open, api_detect_encoding(strip_tags($open)));
  139. echo $open;
  140. $page_included = true;
  141. } else {
  142. if (!empty($_SESSION['user_language_choice'])) {
  143. $user_selected_language = $_SESSION['user_language_choice'];
  144. } elseif (!empty($_SESSION['_user']['language'])) {
  145. $user_selected_language = $_SESSION['_user']['language'];
  146. } else {
  147. $user_selected_language = api_get_setting('platformLanguage');
  148. }
  149. if (!file_exists($home.'home_news_'.$user_selected_language.'.html')) {
  150. if (file_exists($home.'home_top.html')) {
  151. $home_top_temp = file($home.'home_top.html');
  152. } else {
  153. $home_top_temp = file($home_old.'home_top.html');
  154. }
  155. $home_top_temp = implode('', $home_top_temp);
  156. } else {
  157. if (file_exists($home.'home_top_'.$user_selected_language.'.html')) {
  158. $home_top_temp = file_get_contents($home.'home_top_'.$user_selected_language.'.html');
  159. } else {
  160. $home_top_temp = file_get_contents($home.'home_top.html');
  161. }
  162. }
  163. if(trim($home_top_temp)=='') {
  164. $home_top_temp = get_lang('PortalHomepageDefaultIntroduction');
  165. }
  166. $open = str_replace('{rel_path}', api_get_path(REL_PATH), $home_top_temp);
  167. $open = api_to_system_encoding($open, api_detect_encoding(strip_tags($open)));
  168. echo $open;
  169. }
  170. // Display System announcements
  171. $announcement = isset($_GET['announcement']) ? $_GET['announcement'] : -1;
  172. $announcement = intval($announcement);
  173. if (isset($_user['user_id'])) {
  174. $visibility = api_is_allowed_to_create_course() ? VISIBLE_TEACHER : VISIBLE_STUDENT;
  175. SystemAnnouncementManager :: display_announcements($visibility, $announcement);
  176. } else {
  177. SystemAnnouncementManager :: display_announcements(VISIBLE_GUEST, $announcement);
  178. }
  179. // Display courses and category list
  180. if (!$page_included) {
  181. if (api_get_setting('display_categories_on_homepage') == 'true') {
  182. echo '<div class="home_cats">';
  183. display_anonymous_course_list();
  184. echo '</div>';
  185. }
  186. }
  187. echo '</div>';
  188. // Display right menu: language form, login section + useful weblinks
  189. echo '<div class="menu" id="menu">';
  190. display_anonymous_right_menu();
  191. echo '</div>';
  192. /*
  193. Footer
  194. */
  195. Display :: display_footer();
  196. /*
  197. Functions
  198. */
  199. /**
  200. * This function handles the logout and is called whenever there is a $_GET['logout']
  201. *
  202. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
  203. */
  204. function logout() {
  205. global $_configuration, $extAuthSource;
  206. // variable initialisation
  207. $query_string = '';
  208. if (!empty($_SESSION['user_language_choice'])) {
  209. $query_string = '?language='.$_SESSION['user_language_choice'];
  210. }
  211. // Database table definition
  212. $tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
  213. // selecting the last login of the user
  214. $uid = intval($_GET['uid']);
  215. $sql_last_connection = "SELECT login_id, login_date FROM $tbl_track_login WHERE login_user_id='$uid' ORDER BY login_date DESC LIMIT 0,1";
  216. $q_last_connection = Database::query($sql_last_connection);
  217. if (Database::num_rows($q_last_connection) > 0) {
  218. $i_id_last_connection = Database::result($q_last_connection, 0, 'login_id');
  219. }
  220. if (!isset($_SESSION['login_as'])) {
  221. $current_date = date('Y-m-d H:i:s', time());
  222. $s_sql_update_logout_date = "UPDATE $tbl_track_login SET logout_date='".$current_date."' WHERE login_id='$i_id_last_connection'";
  223. Database::query($s_sql_update_logout_date);
  224. }
  225. LoginDelete($uid, $_configuration['statistics_database']); //from inc/lib/online.inc.php - removes the "online" status
  226. //the following code enables the use of an external logout function.
  227. //example: define a $extAuthSource['ldap']['logout']="file.php" in configuration.php
  228. // then a function called ldap_logout() inside that file
  229. // (using *authent_name*_logout as the function name) and the following code
  230. // will find and execute it
  231. $uinfo = api_get_user_info($uid);
  232. if (($uinfo['auth_source'] != PLATFORM_AUTH_SOURCE) && is_array($extAuthSource)) {
  233. if (is_array($extAuthSource[$uinfo['auth_source']])) {
  234. $subarray = $extAuthSource[$uinfo['auth_source']];
  235. if (!empty($subarray['logout']) && file_exists($subarray['logout'])) {
  236. include_once ($subarray['logout']);
  237. $logout_function = $uinfo['auth_source'].'_logout';
  238. if (function_exists($logout_function)) {
  239. $logout_function($uinfo);
  240. }
  241. }
  242. }
  243. }
  244. exit_of_chat($uid);
  245. api_session_destroy();
  246. header("Location: index.php$query_string");
  247. exit();
  248. }
  249. /**
  250. * This function checks if there are courses that are open to the world in the platform course categories (=faculties)
  251. *
  252. * @param unknown_type $category
  253. * @return boolean
  254. */
  255. function category_has_open_courses($category) {
  256. global $setting_show_also_closed_courses;
  257. $user_identified = (api_get_user_id() > 0 && !api_is_anonymous());
  258. $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
  259. $sql_query = "SELECT * FROM $main_course_table WHERE category_code='$category'";
  260. $sql_result = Database::query($sql_query);
  261. while ($course = Database::fetch_array($sql_result)) {
  262. if (!$setting_show_also_closed_courses) {
  263. if ((api_get_user_id() > 0
  264. && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
  265. || ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)) {
  266. return true; //at least one open course
  267. }
  268. } else {
  269. if (isset($course['visibility'])) {
  270. return true; //at least one course (does not matter weither it's open or not because $setting_show_also_closed_courses = true
  271. }
  272. }
  273. }
  274. return false;
  275. }
  276. /**
  277. * Display create course link
  278. */
  279. function display_create_course_link() {
  280. echo '<li><a href="main/create_course/add_course.php">'.
  281. (api_get_setting('course_validation') == 'true' ? get_lang('CreateCourseRequest') : get_lang('CourseCreate')).'</a></li>';
  282. }
  283. /**
  284. * Display edit course list links
  285. */
  286. function display_edit_course_list_links() {
  287. echo '<li><a href="main/auth/courses.php">'.get_lang('CourseManagement').'</a></li>';
  288. }
  289. /**
  290. * Display dashboard link
  291. */
  292. function display_dashboard_link() {
  293. echo '<li><a href="main/dashboard/index.php">'.get_lang('Dashboard').'</a></li>';
  294. }
  295. /**
  296. * Displays the right-hand menu for anonymous users:
  297. * login form, useful links, help section
  298. * Warning: function defines globals
  299. * @version 1.0.1
  300. * @todo does $_plugins need to be global?
  301. */
  302. function display_anonymous_right_menu() {
  303. global $loginFailed, $_plugins, $_user, $menu_navigation;
  304. $platformLanguage = api_get_setting('platformLanguage');
  305. $sys_path = api_get_path(SYS_PATH);
  306. if (!($_user['user_id']) || api_is_anonymous($_user['user_id']) ) { // Only display if the user isn't logged in
  307. api_display_language_form(true);
  308. echo '<br />';
  309. display_login_form();
  310. if ($loginFailed) {
  311. echo '<br />';
  312. handle_login_failed();
  313. }
  314. if (api_get_setting('allow_lostpassword') == 'true' || api_get_setting('allow_registration') == 'true') {
  315. echo '<div class="menusection"><span class="menusectioncaption">'.get_lang('MenuUser').'</span><ul class="menulist">';
  316. if (api_get_setting('allow_registration') != 'false') {
  317. echo '<li><a href="main/auth/inscription.php">'.get_lang('Reg').'</a></li>';
  318. }
  319. if (api_get_setting('allow_lostpassword') == 'true') {
  320. display_lost_password_info();
  321. }
  322. echo '</ul></div>';
  323. }
  324. if (api_number_of_plugins('loginpage_menu') > 0) {
  325. echo '<div class="note" style="background: none">';
  326. api_plugin('loginpage_menu');
  327. echo '</div>';
  328. }
  329. }
  330. // My Account section
  331. if (isset($_SESSION['_user']['user_id']) && $_SESSION['_user']['user_id'] != 0) {
  332. // tabs that are deactivated are added here
  333. $show_menu = false;
  334. $show_create_link = false;
  335. $show_course_link = false;
  336. $display_add_course_link = api_is_allowed_to_create_course() && ($_SESSION['studentview'] != 'studentenview');
  337. if ($display_add_course_link) {
  338. //display_create_course_link();
  339. $show_menu = true;
  340. $show_create_link = true;
  341. }
  342. if (api_is_platform_admin() || api_is_course_admin() || api_is_allowed_to_create_course()) {
  343. $show_menu = true;
  344. $show_course_link = true;
  345. } else {
  346. if (api_get_setting('allow_students_to_browse_courses') == 'true') {
  347. $show_menu = true;
  348. $show_course_link = true;
  349. }
  350. }
  351. if ($show_menu) {
  352. echo '<div class="menusection">';
  353. echo '<span class="menusectioncaption">'.get_lang('MenuUser').'</span>';
  354. echo '<ul class="menulist">';
  355. if ($show_create_link) {
  356. display_create_course_link();
  357. }
  358. if ($show_course_link) {
  359. if (!api_is_drh() && !api_is_session_admin()) {
  360. display_edit_course_list_links();
  361. } else {
  362. display_dashboard_link();
  363. }
  364. }
  365. echo '</ul></div>';
  366. }
  367. // Deleting the myprofile link
  368. if (api_get_setting('allow_social_tool') == 'true') {
  369. unset($menu_navigation['myprofile']);
  370. }
  371. if (!empty($menu_navigation)) {
  372. echo '<div class="menusection">';
  373. echo '<span class="menusectioncaption">'.get_lang('MainNavigation').'</span>';
  374. echo '<ul class="menulist">';
  375. foreach ($menu_navigation as $section => $navigation_info) {
  376. $current = $section == $GLOBALS['this_section'] ? ' id="current"' : '';
  377. echo '<li'.$current.'><a href="'.$navigation_info['url'].'" target="_self">'.$navigation_info['title'].'</a></li>', "\n";
  378. }
  379. echo '</ul></div>';
  380. }
  381. }
  382. // Help section
  383. /*** Hide right menu "general" and other parts on anonymous right menu *****/
  384. $user_selected_language = api_get_interface_language();
  385. global $home, $home_old;
  386. if (!isset($user_selected_language)) {
  387. $user_selected_language = $platformLanguage;
  388. }
  389. $home_menu = @(string)file_get_contents($sys_path.$home.'home_menu_'.$user_selected_language.'.html');
  390. if (empty($home_menu)) {
  391. $home_menu = @(string)file_get_contents($sys_path.$home_old.'home_menu_'.$user_selected_language.'.html');
  392. }
  393. if (empty($home_menu)) {
  394. $home_menu = @(string)file_get_contents($sys_path.$home.'home_menu.html');
  395. }
  396. if (empty($home_menu)) {
  397. $home_menu = @(string)file_get_contents($sys_path.$home_old.'home_menu.html');
  398. }
  399. if (!empty($home_menu)) {
  400. echo '<div class="menusection">', '<span class="menusectioncaption">'.get_lang('MenuGeneral').'</span>';
  401. echo '<ul class="menulist">';
  402. $home_menu = api_to_system_encoding($home_menu, api_detect_encoding(strip_tags($home_menu)));
  403. echo $home_menu;
  404. echo '</ul></div>';
  405. }
  406. if ($_user['user_id'] && api_number_of_plugins('campushomepage_menu') > 0) {
  407. echo '<div class="note" style="background: none">';
  408. api_plugin('campushomepage_menu');
  409. echo '</div>';
  410. }
  411. // includes for any files to be displayed below anonymous right menu
  412. $home_notice = @(string)file_get_contents($sys_path.$home.'home_notice_'.$user_selected_language.'.html');
  413. if (empty($home_notice)) {
  414. $home_notice = @(string)file_get_contents($sys_path.$home.'home_notice.html');
  415. }
  416. if (!empty($home_notice)) {
  417. echo '<div class="note">';
  418. $home_notice = api_to_system_encoding($home_notice, api_detect_encoding(strip_tags($home_notice)));
  419. echo $home_notice;
  420. echo '</div>';
  421. }
  422. }
  423. /**
  424. * Reacts on a failed login:
  425. * Displays an explanation with a link to the registration form.
  426. *
  427. * @version 1.0.1
  428. */
  429. function handle_login_failed() {
  430. if (!isset($_GET['error'])) {
  431. $message = get_lang('InvalidId');
  432. if (api_is_self_registration_allowed()) {
  433. $message = get_lang('InvalidForSelfRegistration');
  434. }
  435. } else {
  436. switch ($_GET['error']) {
  437. case '':
  438. $message = get_lang('InvalidId');
  439. if (api_is_self_registration_allowed()) {
  440. $message = get_lang('InvalidForSelfRegistration');
  441. }
  442. break;
  443. case 'account_expired':
  444. $message = get_lang('AccountExpired');
  445. break;
  446. case 'account_inactive':
  447. $message = get_lang('AccountInactive');
  448. break;
  449. case 'user_password_incorrect':
  450. $message = get_lang('InvalidId');
  451. break;
  452. case 'access_url_inactive':
  453. $message = get_lang('AccountURLInactive');
  454. break;
  455. }
  456. }
  457. echo '<div id="login_fail">'.$message.'</div>';
  458. }
  459. /**
  460. * Adds a form to let users login
  461. * @version 1.1
  462. */
  463. function display_login_form() {
  464. $form = new FormValidator('formLogin');
  465. $form->addElement('text', 'login', get_lang('UserName'), array('size' => 17));
  466. $form->addElement('password', 'password', get_lang('Pass'), array('size' => 17));
  467. $form->addElement('style_submit_button','submitAuth', get_lang('LoginEnter'), array('class' => 'login'));
  468. $renderer =& $form->defaultRenderer();
  469. $renderer->setElementTemplate('<div><label>{label}</label></div><div>{element}</div>');
  470. $form->display();
  471. if (api_get_setting('openid_authentication') == 'true') {
  472. include_once 'main/auth/openid/login.php';
  473. echo '<div>'.openid_form().'</div>';
  474. }
  475. }
  476. /**
  477. * Displays a link to the lost password section
  478. */
  479. function display_lost_password_info() {
  480. echo '<li><a href="main/auth/lostPassword.php">'.get_lang('LostPassword').'</a></li>';
  481. }
  482. /**
  483. * Display list of courses in a category.
  484. * (for anonymous users)
  485. *
  486. * @version 1.1
  487. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University - refactoring and code cleaning
  488. */
  489. function display_anonymous_course_list() {
  490. $ctok = $_SESSION['sec_token'];
  491. $stok = Security::get_token();
  492. //init
  493. $user_identified = (api_get_user_id() > 0 && !api_is_anonymous());
  494. $web_course_path = api_get_path(WEB_COURSE_PATH);
  495. $category = Database::escape_string($_GET['category']);
  496. global $setting_show_also_closed_courses;
  497. // Database table definitions
  498. $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
  499. $main_category_table = Database :: get_main_table(TABLE_MAIN_CATEGORY);
  500. $platformLanguage = api_get_setting('platformLanguage');
  501. //get list of courses in category $category
  502. $sql_get_course_list = "SELECT * FROM $main_course_table cours
  503. WHERE category_code = '".Database::escape_string($_GET['category'])."'
  504. ORDER BY title, UPPER(visual_code)";
  505. //showing only the courses of the current access_url_id
  506. global $_configuration;
  507. if ($_configuration['multiple_access_urls']) {
  508. $url_access_id = api_get_current_access_url_id();
  509. if ($url_access_id != -1) {
  510. $tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
  511. $sql_get_course_list = "SELECT * FROM $main_course_table as course INNER JOIN $tbl_url_rel_course as url_rel_course
  512. ON (url_rel_course.course_code=course.code)
  513. WHERE access_url_id = $url_access_id AND category_code = '".Database::escape_string($_GET['category'])."' ORDER BY title, UPPER(visual_code)";
  514. }
  515. }
  516. // Removed: AND cours.visibility='".COURSE_VISIBILITY_OPEN_WORLD."'
  517. $sql_result_courses = Database::query($sql_get_course_list);
  518. while ($course_result = Database::fetch_array($sql_result_courses)) {
  519. $course_list[] = $course_result;
  520. }
  521. $platform_visible_courses = '';
  522. // $setting_show_also_closed_courses
  523. if($user_identified) {
  524. if ($setting_show_also_closed_courses) {
  525. $platform_visible_courses = '';
  526. } else {
  527. $platform_visible_courses = " AND (t3.visibility='".COURSE_VISIBILITY_OPEN_WORLD."' OR t3.visibility='".COURSE_VISIBILITY_OPEN_PLATFORM."' )";
  528. }
  529. } else {
  530. if ($setting_show_also_closed_courses) {
  531. $platform_visible_courses = '';
  532. } else {
  533. $platform_visible_courses = " AND (t3.visibility='".COURSE_VISIBILITY_OPEN_WORLD."' )";
  534. }
  535. }
  536. $sqlGetSubCatList = "
  537. SELECT t1.name,t1.code,t1.parent_id,t1.children_count,COUNT(DISTINCT t3.code) AS nbCourse
  538. FROM $main_category_table t1
  539. LEFT JOIN $main_category_table t2 ON t1.code=t2.parent_id
  540. LEFT JOIN $main_course_table t3 ON (t3.category_code=t1.code $platform_visible_courses)
  541. WHERE t1.parent_id ". (empty ($category) ? "IS NULL" : "='$category'")."
  542. GROUP BY t1.name,t1.code,t1.parent_id,t1.children_count ORDER BY t1.tree_pos, t1.name";
  543. // Showing only the category of courses of the current access_url_id
  544. global $_configuration;
  545. if ($_configuration['multiple_access_urls']) {
  546. $url_access_id = api_get_current_access_url_id();
  547. if ($url_access_id != -1) {
  548. $tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
  549. $sqlGetSubCatList = "
  550. SELECT t1.name,t1.code,t1.parent_id,t1.children_count,COUNT(DISTINCT t3.code) AS nbCourse
  551. FROM $main_category_table t1
  552. LEFT JOIN $main_category_table t2 ON t1.code=t2.parent_id
  553. LEFT JOIN $main_course_table t3 ON (t3.category_code=t1.code $platform_visible_courses)
  554. INNER JOIN $tbl_url_rel_course as url_rel_course
  555. ON (url_rel_course.course_code=t3.code)
  556. WHERE access_url_id = $url_access_id AND t1.parent_id ".(empty($category) ? "IS NULL" : "='$category'")."
  557. GROUP BY t1.name,t1.code,t1.parent_id,t1.children_count ORDER BY t1.tree_pos, t1.name";
  558. }
  559. }
  560. $resCats = Database::query($sqlGetSubCatList);
  561. $thereIsSubCat = false;
  562. if (Database::num_rows($resCats) > 0) {
  563. $htmlListCat = '<h4 style="margin-top: 0px;">'.get_lang('CatList').'</h4><ul>';
  564. while ($catLine = Database::fetch_array($resCats)) {
  565. if ($catLine['code'] != $category) {
  566. $category_has_open_courses = category_has_open_courses($catLine['code']);
  567. if ($category_has_open_courses) {
  568. // The category contains courses accessible to anonymous visitors
  569. $htmlListCat .= '<li>';
  570. $htmlListCat .= '<a href="'.api_get_self().'?category='.$catLine['code'].'">'.$catLine['name'].'</a>';
  571. if (api_get_setting('show_number_of_courses') == 'true') {
  572. $htmlListCat .= ' ('.$catLine['nbCourse'].' '.get_lang('Courses').')';
  573. }
  574. $htmlListCat .= "</li>\n";
  575. $thereIsSubCat = true;
  576. } elseif ($catLine['children_count'] > 0) {
  577. // The category has children, subcategories
  578. $htmlListCat .= '<li>';
  579. $htmlListCat .= '<a href="'.api_get_self().'?category='.$catLine['code'].'">'.$catLine['name'].'</a>';
  580. $htmlListCat .= "</li>\n";
  581. $thereIsSubCat = true;
  582. }
  583. /************************************************************************
  584. end changed code to eliminate the (0 courses) after empty categories
  585. ************************************************************************/
  586. elseif (api_get_setting('show_empty_course_categories') == 'true') {
  587. $htmlListCat .= '<li>';
  588. $htmlListCat .= $catLine['name'];
  589. $htmlListCat .= "</li>\n";
  590. $thereIsSubCat = true;
  591. } //else don't set thereIsSubCat to true to avoid printing things if not requested
  592. } else {
  593. $htmlTitre = '<p>';
  594. if (api_get_setting('show_back_link_on_top_of_tree') == 'true') {
  595. $htmlTitre .= '<a href="'.api_get_self().'">&lt;&lt; '.get_lang('BackToHomePage').'</a>';
  596. }
  597. if (!is_null($catLine['parent_id']) || (api_get_setting('show_back_link_on_top_of_tree') != 'true' && !is_null($catLine['code']))) {
  598. $htmlTitre .= '<a href="'.api_get_self().'?category='.$catLine['parent_id'].'">&lt;&lt; '.get_lang('Up').'</a>';
  599. }
  600. $htmlTitre .= "</p>\n";
  601. if ($category != "" && !is_null($catLine['code'])) {
  602. $htmlTitre .= '<h3>'.$catLine['name']."</h3>\n";
  603. } else {
  604. $htmlTitre .= '<h3>'.get_lang('Categories')."</h3>\n";
  605. }
  606. }
  607. }
  608. $htmlListCat .= "</ul>\n";
  609. }
  610. echo $htmlTitre;
  611. if ($thereIsSubCat) {
  612. echo $htmlListCat;
  613. }
  614. while ($categoryName = Database::fetch_array($resCats)) {
  615. echo '<h3>', $categoryName['name'], "</h3>\n";
  616. }
  617. $numrows = Database::num_rows($sql_result_courses);
  618. $courses_list_string = '';
  619. $courses_shown = 0;
  620. if ($numrows > 0) {
  621. if ($thereIsSubCat) {
  622. $courses_list_string .= "<hr size=\"1\" noshade=\"noshade\">\n";
  623. }
  624. $courses_list_string .= '<h4 style="margin-top: 0px;">'.get_lang('CourseList')."</h4>\n<ul>\n";
  625. if (api_get_user_id()) {
  626. $courses_of_user = get_courses_of_user(api_get_user_id());
  627. }
  628. foreach ($course_list as $course) {
  629. // $setting_show_also_closed_courses
  630. if (!$setting_show_also_closed_courses) {
  631. // If we do not show the closed courses
  632. // we only show the courses that are open to the world (to everybody)
  633. // and the courses that are open to the platform (if the current user is a registered user
  634. if( ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM) || ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)) {
  635. $courses_shown++;
  636. $courses_list_string .= "<li>\n";
  637. $courses_list_string .= '<a href="'.$web_course_path.$course['directory'].'/">'.$course['title'].'</a><br />';
  638. if (api_get_setting('display_coursecode_in_courselist') == 'true') {
  639. $courses_list_string .= $course['visual_code'];
  640. }
  641. if (api_get_setting('display_coursecode_in_courselist') == 'true' && api_get_setting('display_teacher_in_courselist') == 'true') {
  642. $courses_list_string .= ' - ';
  643. }
  644. if (api_get_setting('display_teacher_in_courselist') == 'true') {
  645. $courses_list_string .= $course['tutor_name'];
  646. }
  647. if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] != api_get_setting('platformLanguage')) {
  648. $courses_list_string .= ' - '.$course['course_language'];
  649. }
  650. $courses_list_string .= "</li>\n";
  651. }
  652. }
  653. // We DO show the closed courses.
  654. // The course is accessible if (link to the course homepage)
  655. // 1. the course is open to the world (doesn't matter if the user is logged in or not): $course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)
  656. // 2. the user is logged in and the course is open to the world or open to the platform: ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
  657. // 3. the user is logged in and the user is subscribed to the course and the course visibility is not COURSE_VISIBILITY_CLOSED
  658. // 4. the user is logged in and the user is course admin of te course (regardless of the course visibility setting)
  659. // 5. the user is the platform admin api_is_platform_admin()
  660. //
  661. else {
  662. $courses_shown++;
  663. $courses_list_string .= "<li>\n";
  664. if ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD
  665. || ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
  666. || ($user_identified && key_exists($course['code'], $courses_of_user) && $course['visibility'] != COURSE_VISIBILITY_CLOSED)
  667. || $courses_of_user[$course['code']]['status'] == '1'
  668. || api_is_platform_admin()) {
  669. $courses_list_string .= '<a href="'.$web_course_path.$course['directory'].'/">';
  670. }
  671. $courses_list_string .= $course['title'];
  672. if ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD
  673. || ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
  674. || ($user_identified && key_exists($course['code'], $courses_of_user) && $course['visibility'] != COURSE_VISIBILITY_CLOSED)
  675. || $courses_of_user[$course['code']]['status'] == '1'
  676. || api_is_platform_admin()) {
  677. $courses_list_string .= '</a><br />';
  678. }
  679. if (api_get_setting('display_coursecode_in_courselist') == 'true') {
  680. $courses_list_string .= ' '.$course['visual_code'];
  681. }
  682. if (api_get_setting('display_coursecode_in_courselist') == 'true' && api_get_setting('display_teacher_in_courselist') == 'true') {
  683. $courses_list_string .= ' - ';
  684. }
  685. if (api_get_setting('display_teacher_in_courselist') == 'true') {
  686. $courses_list_string .= $course['tutor_name'];
  687. }
  688. if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] != api_get_setting('platformLanguage')) {
  689. $courses_list_string .= ' - '.$course['course_language'];
  690. }
  691. if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] != api_get_setting('platformLanguage')) {
  692. $courses_list_string .= ' - '.$course['course_language'];
  693. }
  694. // We display a subscription link if
  695. // 1. it is allowed to register for the course and if the course is not already in the courselist of the user and if the user is identiefied
  696. // 2
  697. if ($user_identified && !key_exists($course['code'], $courses_of_user)) {
  698. if ($course['subscribe'] == '1') {
  699. $courses_list_string .= '<form action="main/auth/courses.php?action=subscribe&category='.Security::remove_XSS($_GET['category']).'" method="post">';
  700. $courses_list_string .= '<input type="hidden" name="sec_token" value="'.$stok.'">';
  701. $courses_list_string .= '<input type="hidden" name="subscribe" value="'.$course['code'].'" />';
  702. $courses_list_string .= '<input type="image" name="unsub" src="main/img/enroll.gif" alt="'.get_lang('Subscribe').'" />'.get_lang('Subscribe').'</form>';
  703. } else {
  704. $courses_list_string .= '<br />'.get_lang('SubscribingNotAllowed');
  705. }
  706. }
  707. $courses_list_string .= "</li>\n";
  708. }
  709. }
  710. $courses_list_string .= "</ul>\n";
  711. } else {
  712. // echo '<blockquote>', get_lang('_No_course_publicly_available'), "</blockquote>\n";
  713. }
  714. if ($courses_shown > 0) { //only display the list of courses and categories if there was more than
  715. // 0 courses visible to the world (we're in the anonymous list here)
  716. echo $courses_list_string;
  717. }
  718. if ($category != '') {
  719. echo '<p><a href="'.api_get_self().'"> ', Display :: return_icon('back.png', get_lang('BackToHomePage')), get_lang('BackToHomePage'), '</a></p>', "\n";
  720. }
  721. }
  722. /**
  723. * retrieves all the courses that the user has already subscribed to
  724. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University, Belgium
  725. * @param int $user_id: the id of the user
  726. * @return array an array containing all the information of the courses of the given user
  727. */
  728. function get_courses_of_user($user_id) {
  729. $table_course = Database::get_main_table(TABLE_MAIN_COURSE);
  730. $table_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
  731. // Secondly we select the courses that are in a category (user_course_cat <> 0) and sort these according to the sort of the category
  732. $user_id = intval($user_id);
  733. $sql_select_courses = "SELECT course.code k, course.visual_code vc, course.subscribe subscr, course.unsubscribe unsubscr,
  734. course.title i, course.tutor_name t, course.db_name db, course.directory dir, course_rel_user.status status,
  735. course_rel_user.sort sort, course_rel_user.user_course_cat user_course_cat
  736. FROM $table_course course,
  737. $table_course_user course_rel_user
  738. WHERE course.code = course_rel_user.course_code
  739. AND course_rel_user.user_id = '".$user_id."'
  740. AND course_rel_user.relation_type<>".COURSE_RELATION_TYPE_RRHH."
  741. ORDER BY course_rel_user.sort ASC";
  742. $result = Database::query($sql_select_courses);
  743. $courses = array();
  744. while ($row = Database::fetch_array($result)) {
  745. // We only need the database name of the course
  746. $courses[$row['k']] = array('db' => $row['db'], 'code' => $row['k'], 'visual_code' => $row['vc'], 'title' => $row['i'], 'directory' => $row['dir'], 'status' => $row['status'], 'tutor' => $row['t'], 'subscribe' => $row['subscr'], 'unsubscribe' => $row['unsubscr'], 'sort' => $row['sort'], 'user_course_category' => $row['user_course_cat']);
  747. }
  748. return $courses;
  749. }