index.php 40 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. * @todo check the different @todos in this page and really do them
  7. * @todo check if the news management works as expected
  8. */
  9. // Only this script should have this constant defined. This is used to activate the javascript that
  10. // gives the login name automatic focus in header.inc.html.
  11. /** @todo Couldn't this be done using the $HtmlHeadXtra array? */
  12. define('DOKEOS_HOMEPAGE', true);
  13. $language_file = array('courses', 'index');
  14. /* Flag forcing the 'current course' reset, as we're not inside a course anymore. */
  15. // Maybe we should change this into an api function? an example: Coursemanager::unset();
  16. $cidReset = true;
  17. /* Included libraries */
  18. /** @todo Make all the library files consistent, use filename.lib.php and not filename.lib.inc.php. */
  19. require_once 'main/inc/global.inc.php';
  20. require_once api_get_path(LIBRARY_PATH).'course.lib.php';
  21. require_once api_get_path(LIBRARY_PATH).'events.lib.inc.php';
  22. require_once api_get_path(LIBRARY_PATH).'system_announcements.lib.php';
  23. require_once api_get_path(LIBRARY_PATH).'groupmanager.lib.php';
  24. require_once api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php';
  25. require_once 'main/chat/chat_functions.lib.php';
  26. $loginFailed = isset($_GET['loginFailed']) ? true : isset($loginFailed);
  27. $setting_show_also_closed_courses = api_get_setting('show_closed_courses') == 'true';
  28. // The section (for the tabs).
  29. $this_section = SECTION_CAMPUS;
  30. unset($_SESSION['this_section']);//for hmtl editor repository
  31. /* Action Handling */
  32. /** @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?
  33. * 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
  34. * 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
  35. * will see it.
  36. */
  37. $my_user_id = api_get_user_id();
  38. if (!empty($_GET['logout'])) {
  39. logout();
  40. }
  41. /* Table definitions */
  42. $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
  43. $main_category_table = Database :: get_main_table(TABLE_MAIN_CATEGORY);
  44. $track_login_table = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
  45. /* Constants and CONFIGURATION parameters */
  46. /** @todo these configuration settings should move to the Chamilo config settings. */
  47. /** Defines wether or not anonymous visitors can see a list of the courses on the Chamilo homepage that are open to the world. */
  48. $_setting['display_courses_to_anonymous_users'] = 'true';
  49. /** @todo Remove this piece of code because this is not used. */
  50. if (isset($_user['user_id'])) {
  51. $nameTools = api_get_setting('siteName');
  52. }
  53. /* LOGIN */
  54. /**
  55. * @todo This piece of code should probably move to local.inc.php where the actual login / logout procedure is handled.
  56. * @todo Consider removing this piece of code because does nothing.
  57. */
  58. if (isset($_GET['submitAuth']) && $_GET['submitAuth'] == 1) {
  59. // nice lie!!!
  60. echo 'Attempted breakin - sysadmins notified.';
  61. session_destroy();
  62. die();
  63. }
  64. // Delete session neccesary for legal terms
  65. if (api_get_setting('allow_terms_conditions') == 'true') {
  66. unset($_SESSION['update_term_and_condition']);
  67. unset($_SESSION['info_current_user']);
  68. }
  69. /**
  70. * @todo This piece of code should probably move to local.inc.php where the actual login procedure is handled.
  71. * @todo Check if this code is used. I think this code is never executed because after clicking the submit button
  72. * the code does the stuff in local.inc.php and then redirects to index.php or user_portal.php depending
  73. * on api_get_setting('page_after_login').
  74. */
  75. if (!empty($_POST['submitAuth'])) {
  76. // The user has been already authenticated, we are now to find the last login of the user.
  77. if (isset ($_user['user_id'])) {
  78. $sql_last_login = "SELECT UNIX_TIMESTAMP(login_date)
  79. FROM $track_login_table
  80. WHERE login_user_id = '".$_user['user_id']."'
  81. ORDER BY login_date DESC LIMIT 1";
  82. $result_last_login = Database::query($sql_last_login);
  83. if (!$result_last_login) {
  84. if (Database::num_rows($result_last_login) > 0) {
  85. $user_last_login_datetime = Database::fetch_array($result_last_login);
  86. $user_last_login_datetime = $user_last_login_datetime[0];
  87. api_session_register('user_last_login_datetime');
  88. }
  89. }
  90. Database::free_result($result_last_login);
  91. //event_login();
  92. if (api_is_platform_admin()) {
  93. // decode all open event informations and fill the track_c_* tables
  94. include api_get_path(LIBRARY_PATH).'stats.lib.inc.php';
  95. decodeOpenInfos();
  96. }
  97. }
  98. } // End login -- if ($_POST['submitAuth'])
  99. else {
  100. // Only if login form was not sent because if the form is sent the user was already on the page.
  101. event_open();
  102. }
  103. // The header.
  104. $header_title = get_lang('Homepage');
  105. $sitename = api_get_setting('siteName');
  106. if (!empty($sitename)) {
  107. $header_title = null;
  108. }
  109. Display::display_header($header_title);
  110. /* MAIN CODE */
  111. echo '<div class="maincontent" id="content">';
  112. // Plugins for loginpage_main AND campushomepage_main.
  113. if (!api_get_user_id()) {
  114. api_plugin('loginpage_main');
  115. } else {
  116. api_plugin('campushomepage_main');
  117. }
  118. $home = 'home/';
  119. if ($_configuration['multiple_access_urls']) {
  120. $access_url_id = api_get_current_access_url_id();
  121. if ($access_url_id != -1){
  122. $url_info = api_get_access_url($access_url_id);
  123. $url = api_remove_trailing_slash(preg_replace('/https?:\/\//i', '', $url_info['url']));
  124. $clean_url = replace_dangerous_char($url);
  125. $clean_url = str_replace('/', '-', $clean_url);
  126. $clean_url .= '/';
  127. $home_old = 'home/';
  128. $home = 'home/'.$clean_url;
  129. }
  130. }
  131. // Including the page for the news
  132. $page_included = false;
  133. if (!empty($_GET['include']) && preg_match('/^[a-zA-Z0-9_-]*\.html$/', $_GET['include'])) {
  134. $open = @(string)file_get_contents(api_get_path(SYS_PATH).$home.$_GET['include']);
  135. $open = api_to_system_encoding($open, api_detect_encoding(strip_tags($open)));
  136. echo $open;
  137. $page_included = true;
  138. } else {
  139. if (!empty($_SESSION['user_language_choice'])) {
  140. $user_selected_language = $_SESSION['user_language_choice'];
  141. } elseif (!empty($_SESSION['_user']['language'])) {
  142. $user_selected_language = $_SESSION['_user']['language'];
  143. } else {
  144. $user_selected_language = api_get_setting('platformLanguage');
  145. }
  146. if (!file_exists($home.'home_news_'.$user_selected_language.'.html')) {
  147. if (file_exists($home.'home_top.html')) {
  148. $home_top_temp = file($home.'home_top.html');
  149. } else {
  150. $home_top_temp = file($home_old.'home_top.html');
  151. }
  152. $home_top_temp = implode('', $home_top_temp);
  153. } else {
  154. if (file_exists($home.'home_top_'.$user_selected_language.'.html')) {
  155. $home_top_temp = file_get_contents($home.'home_top_'.$user_selected_language.'.html');
  156. } else {
  157. $home_top_temp = file_get_contents($home.'home_top.html');
  158. }
  159. }
  160. if (trim($home_top_temp) == '' && api_is_platform_admin()) {
  161. $home_top_temp = get_lang('PortalHomepageDefaultIntroduction');
  162. }
  163. $open = str_replace('{rel_path}', api_get_path(REL_PATH), $home_top_temp);
  164. $open = api_to_system_encoding($open, api_detect_encoding(strip_tags($open)));
  165. echo $open;
  166. }
  167. // Display courses and category list.
  168. if (!$page_included) {
  169. // Display System announcements
  170. $announcement = isset($_GET['announcement']) ? $_GET['announcement'] : -1;
  171. $announcement = intval($announcement);
  172. if (isset($_user['user_id'])) {
  173. $visibility = api_is_allowed_to_create_course() ? VISIBLE_TEACHER : VISIBLE_STUDENT;
  174. SystemAnnouncementManager :: display_announcements($visibility, $announcement);
  175. } else {
  176. SystemAnnouncementManager :: display_announcements(VISIBLE_GUEST, $announcement);
  177. }
  178. if (api_get_setting('display_categories_on_homepage') == 'true') {
  179. echo '<div class="home_cats">';
  180. display_anonymous_course_list();
  181. echo '</div>';
  182. }
  183. }
  184. echo '</div>';
  185. echo '<div id="menu-wrapper">';
  186. if (!api_is_anonymous()) {
  187. // @todo move all this in a class/function
  188. if (api_get_setting('allow_social_tool') == 'true' && api_get_setting('allow_message_tool') == 'true') {
  189. //Always show the user image
  190. $img_array = UserManager::get_user_picture_path_by_id(api_get_user_id(), 'web', true, true);
  191. $no_image = false;
  192. if ($img_array['file'] == 'unknown.jpg') {
  193. $no_image = true;
  194. }
  195. $img_array = UserManager::get_picture_user(api_get_user_id(), $img_array['file'], 50, USER_IMAGE_SIZE_MEDIUM, ' width="90" height="90" ');
  196. $profile_content .='<div id="social_widget">';
  197. $profile_content .= '<div id="social_widget_image">';
  198. if (api_get_setting('allow_social_tool') == 'true') {
  199. if (!$no_image) {
  200. $profile_content .='<a href="'.api_get_path(WEB_PATH).'main/social/home.php"><img src="'.$img_array['file'].'" '.$img_array['style'].' border="1"></a>';
  201. } else {
  202. $profile_content .='<a href="'.api_get_path(WEB_PATH).'main/auth/profile.php"><img title="'.get_lang('EditProfile').'" src="'.$img_array['file'].'" '.$img_array['style'].' border="1"></a>';
  203. }
  204. } else {
  205. $profile_content .='<a href="'.api_get_path(WEB_PATH).'main/auth/profile.php"><img title="'.get_lang('EditProfile').'" src="'.$img_array['file'].'" '.$img_array['style'].' border="1"></a>';
  206. }
  207. $profile_content .= ' </div></div>';
  208. require_once api_get_path(LIBRARY_PATH).'message.lib.php';
  209. require_once api_get_path(LIBRARY_PATH).'social.lib.php';
  210. require_once api_get_path(LIBRARY_PATH).'group_portal_manager.lib.php';
  211. // New messages.
  212. $number_of_new_messages = MessageManager::get_new_messages();
  213. // New contact invitations.
  214. $number_of_new_messages_of_friend = SocialManager::get_message_number_invitation_by_user_id(api_get_user_id());
  215. // New group invitations sent by a moderator.
  216. $group_pending_invitations = GroupPortalManager::get_groups_by_user(api_get_user_id(), GROUP_USER_PERMISSION_PENDING_INVITATION, false);
  217. $group_pending_invitations = count($group_pending_invitations);
  218. $total_invitations = $number_of_new_messages_of_friend + $group_pending_invitations;
  219. $cant_msg = '';
  220. if ($number_of_new_messages > 0) {
  221. $cant_msg = ' ('.$number_of_new_messages.')';
  222. }
  223. $profile_content .= '<div class="clear"></div>';
  224. $profile_content .= '<div class="message-content"><ul class="menulist">';
  225. $link = '';
  226. if (api_get_setting('show_tabs', 'social') == 'true') {
  227. $link = '?f=social';
  228. }
  229. $profile_content .= '<li><a href="'.api_get_path(WEB_PATH).'main/messages/inbox.php'.$link.'" class="message-body">'.get_lang('Inbox').$cant_msg.' </a></li>';
  230. $profile_content .= '<li><a href="'.api_get_path(WEB_PATH).'main/messages/new_message.php'.$link.'" class="message-body">'.get_lang('Compose').' </a></li>';
  231. if ($total_invitations == 0) {
  232. $total_invitations = '';
  233. } else {
  234. $total_invitations = ' ('.$total_invitations.')';
  235. }
  236. $profile_content .= '<li><a href="'.api_get_path(WEB_PATH).'main/social/invitations.php" class="message-body">'.get_lang('PendingInvitations').' '.$total_invitations.' </a></li>';
  237. $profile_content .= '</ul>';
  238. $profile_content .= '</div>';
  239. }
  240. //Profile content
  241. echo show_right_block(get_lang('Profile'), $profile_content);
  242. }
  243. // Display right menu: language form, login section + useful weblinks.
  244. echo '<div class="menu" id="menu">';
  245. display_anonymous_right_menu();
  246. echo '</div>';
  247. echo '</div>';
  248. /* Footer */
  249. Display :: display_footer();
  250. /* Functions */
  251. /**
  252. * This function handles the logout and is called whenever there is a $_GET['logout']
  253. *
  254. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
  255. */
  256. function logout() {
  257. global $_configuration, $extAuthSource;
  258. // Variable initialisation.
  259. $query_string = '';
  260. if (!empty($_SESSION['user_language_choice'])) {
  261. $query_string = '?language='.$_SESSION['user_language_choice'];
  262. }
  263. // Database table definition.
  264. $tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
  265. // Selecting the last login of the user.
  266. $uid = intval($_GET['uid']);
  267. $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";
  268. $q_last_connection = Database::query($sql_last_connection);
  269. if (Database::num_rows($q_last_connection) > 0) {
  270. $i_id_last_connection = Database::result($q_last_connection, 0, 'login_id');
  271. }
  272. if (!isset($_SESSION['login_as'])) {
  273. $current_date = date('Y-m-d H:i:s', time());
  274. $s_sql_update_logout_date = "UPDATE $tbl_track_login SET logout_date='".$current_date."' WHERE login_id='$i_id_last_connection'";
  275. Database::query($s_sql_update_logout_date);
  276. }
  277. LoginDelete($uid, $_configuration['statistics_database']); // From inc/lib/online.inc.php - removes the "online" status.
  278. // The following code enables the use of an external logout function.
  279. // Example: define a $extAuthSource['ldap']['logout'] = 'file.php' in configuration.php.
  280. // Then a function called ldap_logout() inside that file
  281. // (using *authent_name*_logout as the function name) and the following code
  282. // will find and execute it.
  283. $uinfo = api_get_user_info($uid);
  284. if (($uinfo['auth_source'] != PLATFORM_AUTH_SOURCE) && is_array($extAuthSource)) {
  285. if (is_array($extAuthSource[$uinfo['auth_source']])) {
  286. $subarray = $extAuthSource[$uinfo['auth_source']];
  287. if (!empty($subarray['logout']) && file_exists($subarray['logout'])) {
  288. include_once ($subarray['logout']);
  289. $logout_function = $uinfo['auth_source'].'_logout';
  290. if (function_exists($logout_function)) {
  291. $logout_function($uinfo);
  292. }
  293. }
  294. }
  295. }
  296. exit_of_chat($uid);
  297. api_session_destroy();
  298. header("Location: index.php$query_string");
  299. exit();
  300. }
  301. /**
  302. * This function checks if there are courses that are open to the world in the platform course categories (=faculties)
  303. *
  304. * @param unknown_type $category
  305. * @return boolean
  306. */
  307. function category_has_open_courses($category) {
  308. global $setting_show_also_closed_courses;
  309. $user_identified = (api_get_user_id() > 0 && !api_is_anonymous());
  310. $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
  311. $sql_query = "SELECT * FROM $main_course_table WHERE category_code='$category'";
  312. $sql_result = Database::query($sql_query);
  313. while ($course = Database::fetch_array($sql_result)) {
  314. if (!$setting_show_also_closed_courses) {
  315. if ((api_get_user_id() > 0
  316. && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
  317. || ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)) {
  318. return true; //at least one open course
  319. }
  320. } else {
  321. if (isset($course['visibility'])) {
  322. return true; // At least one course (it does not matter weither it's open or not because $setting_show_also_closed_courses = true).
  323. }
  324. }
  325. }
  326. return false;
  327. }
  328. /**
  329. * Display create course link
  330. */
  331. function display_create_course_link() {
  332. echo '<li><a href="main/create_course/add_course.php">'.
  333. (api_get_setting('course_validation') == 'true' ? get_lang('CreateCourseRequest') : get_lang('CourseCreate')).'</a></li>';
  334. }
  335. /**
  336. * Display edit course list links
  337. */
  338. function display_edit_course_list_links() {
  339. echo '<li><a href="main/auth/courses.php">'.get_lang('CourseManagement').'</a></li>';
  340. }
  341. /**
  342. * Display dashboard link
  343. */
  344. function display_dashboard_link() {
  345. echo '<li><a href="main/dashboard/index.php">'.get_lang('Dashboard').'</a></li>';
  346. }
  347. /**
  348. * Displays the right-hand menu for anonymous users:
  349. * login form, useful links, help section
  350. * Warning: function defines globals
  351. * @version 1.0.1
  352. * @todo does $_plugins need to be global?
  353. */
  354. function display_anonymous_right_menu() {
  355. global $loginFailed, $_plugins, $_user, $menu_navigation;
  356. $platformLanguage = api_get_setting('platformLanguage');
  357. $sys_path = api_get_path(SYS_PATH);
  358. if (!($_user['user_id']) || api_is_anonymous($_user['user_id']) ) { // Only display if the user isn't logged in.
  359. api_display_language_form(true);
  360. echo '<br />';
  361. display_login_form();
  362. if ($loginFailed) {
  363. echo '<br />';
  364. handle_login_failed();
  365. }
  366. if (api_get_setting('allow_lostpassword') == 'true' || api_get_setting('allow_registration') == 'true') {
  367. echo '<div class="menusection"><span class="menusectioncaption">'.get_lang('MenuUser').'</span><ul class="menulist">';
  368. if (api_get_setting('allow_registration') != 'false') {
  369. echo '<li><a href="main/auth/inscription.php">'.get_lang('Reg').'</a></li>';
  370. }
  371. if (api_get_setting('allow_lostpassword') == 'true') {
  372. display_lost_password_info();
  373. }
  374. echo '</ul></div>';
  375. }
  376. if (api_number_of_plugins('loginpage_menu') > 0) {
  377. echo '<div class="note" style="background: none">';
  378. api_plugin('loginpage_menu');
  379. echo '</div>';
  380. }
  381. }
  382. // My Account section.
  383. if (isset($_SESSION['_user']['user_id']) && $_SESSION['_user']['user_id'] != 0) {
  384. // tabs that are deactivated are added here
  385. $show_menu = false;
  386. $show_create_link = false;
  387. $show_course_link = false;
  388. $display_add_course_link = api_is_allowed_to_create_course() && ($_SESSION['studentview'] != 'studentenview');
  389. if ($display_add_course_link) {
  390. //display_create_course_link();
  391. $show_menu = true;
  392. $show_create_link = true;
  393. }
  394. if (api_is_platform_admin() || api_is_course_admin() || api_is_allowed_to_create_course()) {
  395. $show_menu = true;
  396. $show_course_link = true;
  397. } else {
  398. if (api_get_setting('allow_students_to_browse_courses') == 'true') {
  399. $show_menu = true;
  400. $show_course_link = true;
  401. }
  402. }
  403. if ($show_menu) {
  404. echo '<div class="menusection">';
  405. echo '<span class="menusectioncaption">'.get_lang('MenuUser').'</span>';
  406. echo '<ul class="menulist">';
  407. if ($show_create_link) {
  408. display_create_course_link();
  409. }
  410. if ($show_course_link) {
  411. if (!api_is_drh() && !api_is_session_admin()) {
  412. display_edit_course_list_links();
  413. } else {
  414. display_dashboard_link();
  415. }
  416. }
  417. echo '</ul></div>';
  418. }
  419. // Deleting the myprofile link.
  420. if (api_get_setting('allow_social_tool') == 'true') {
  421. unset($menu_navigation['myprofile']);
  422. }
  423. if (!empty($menu_navigation)) {
  424. echo '<div class="menusection">';
  425. echo '<span class="menusectioncaption">'.get_lang('MainNavigation').'</span>';
  426. echo '<ul class="menulist">';
  427. foreach ($menu_navigation as $section => $navigation_info) {
  428. $current = $section == $GLOBALS['this_section'] ? ' id="current"' : '';
  429. echo '<li'.$current.'><a href="'.$navigation_info['url'].'" target="_self">'.$navigation_info['title'].'</a></li>', "\n";
  430. }
  431. echo '</ul></div>';
  432. }
  433. }
  434. // Help section.
  435. /* Hide right menu "general" and other parts on anonymous right menu. */
  436. $user_selected_language = api_get_interface_language();
  437. global $home, $home_old;
  438. if (!isset($user_selected_language)) {
  439. $user_selected_language = $platformLanguage;
  440. }
  441. $home_menu = @(string)file_get_contents($sys_path.$home.'home_menu_'.$user_selected_language.'.html');
  442. /*if (empty($home_menu)) {
  443. $home_menu = @(string)file_get_contents($sys_path.$home_old.'home_menu_'.$user_selected_language.'.html');
  444. }
  445. if (empty($home_menu)) {
  446. $home_menu = @(string)file_get_contents($sys_path.$home.'home_menu.html');
  447. }
  448. if (empty($home_menu)) {
  449. $home_menu = @(string)file_get_contents($sys_path.$home_old.'home_menu.html');
  450. }*/
  451. if (!empty($home_menu)) {
  452. echo '<div class="menusection">', '<span class="menusectioncaption">'.get_lang('MenuGeneral').'</span>';
  453. echo '<ul class="menulist">';
  454. $home_menu = api_to_system_encoding($home_menu, api_detect_encoding(strip_tags($home_menu)));
  455. echo $home_menu;
  456. echo '</ul></div>';
  457. }
  458. if ($_user['user_id'] && api_number_of_plugins('campushomepage_menu') > 0) {
  459. echo '<div class="note" style="background: none">';
  460. api_plugin('campushomepage_menu');
  461. echo '</div>';
  462. }
  463. // Includes for any files to be displayed below anonymous right menu.
  464. $home_notice = @(string)file_get_contents($sys_path.$home.'home_notice_'.$user_selected_language.'.html');
  465. if (empty($home_notice)) {
  466. $home_notice = @(string)file_get_contents($sys_path.$home.'home_notice.html');
  467. }
  468. if (!empty($home_notice)) {
  469. echo '<div class="note">';
  470. $home_notice = api_to_system_encoding($home_notice, api_detect_encoding(strip_tags($home_notice)));
  471. echo $home_notice;
  472. echo '</div>';
  473. }
  474. }
  475. /**
  476. * Reacts on a failed login:
  477. * Displays an explanation with a link to the registration form.
  478. *
  479. * @version 1.0.1
  480. */
  481. function handle_login_failed() {
  482. if (!isset($_GET['error'])) {
  483. $message = get_lang('InvalidId');
  484. if (api_is_self_registration_allowed()) {
  485. $message = get_lang('InvalidForSelfRegistration');
  486. }
  487. } else {
  488. switch ($_GET['error']) {
  489. case '':
  490. $message = get_lang('InvalidId');
  491. if (api_is_self_registration_allowed()) {
  492. $message = get_lang('InvalidForSelfRegistration');
  493. }
  494. break;
  495. case 'account_expired':
  496. $message = get_lang('AccountExpired');
  497. break;
  498. case 'account_inactive':
  499. $message = get_lang('AccountInactive');
  500. break;
  501. case 'user_password_incorrect':
  502. $message = get_lang('InvalidId');
  503. break;
  504. case 'access_url_inactive':
  505. $message = get_lang('AccountURLInactive');
  506. break;
  507. }
  508. }
  509. echo '<div id="login_fail">'.$message.'</div>';
  510. }
  511. /**
  512. * Adds a form to let users login
  513. * @version 1.1
  514. */
  515. function display_login_form() {
  516. $form = new FormValidator('formLogin');
  517. $form->addElement('text', 'login', get_lang('UserName'), array('size' => 17));
  518. $form->addElement('password', 'password', get_lang('Pass'), array('size' => 17));
  519. $form->addElement('style_submit_button','submitAuth', get_lang('LoginEnter'), array('class' => 'login'));
  520. $renderer =& $form->defaultRenderer();
  521. $renderer->setElementTemplate('<div><label>{label}</label></div><div>{element}</div>');
  522. $form->display();
  523. if (api_get_setting('openid_authentication') == 'true') {
  524. include_once 'main/auth/openid/login.php';
  525. echo '<div>'.openid_form().'</div>';
  526. }
  527. }
  528. /**
  529. * Displays a link to the lost password section
  530. */
  531. function display_lost_password_info() {
  532. echo '<li><a href="main/auth/lostPassword.php">'.get_lang('LostPassword').'</a></li>';
  533. }
  534. /**
  535. * Display list of courses in a category.
  536. * (for anonymous users)
  537. *
  538. * @version 1.1
  539. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University - refactoring and code cleaning
  540. */
  541. function display_anonymous_course_list() {
  542. $ctok = $_SESSION['sec_token'];
  543. $stok = Security::get_token();
  544. // Initialization.
  545. $user_identified = (api_get_user_id() > 0 && !api_is_anonymous());
  546. $web_course_path = api_get_path(WEB_COURSE_PATH);
  547. $category = Database::escape_string($_GET['category']);
  548. global $setting_show_also_closed_courses;
  549. // Database table definitions.
  550. $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
  551. $main_category_table = Database :: get_main_table(TABLE_MAIN_CATEGORY);
  552. $platformLanguage = api_get_setting('platformLanguage');
  553. // Get list of courses in category $category.
  554. $sql_get_course_list = "SELECT * FROM $main_course_table cours
  555. WHERE category_code = '".Database::escape_string($_GET['category'])."'
  556. ORDER BY title, UPPER(visual_code)";
  557. // Showing only the courses of the current access_url_id.
  558. global $_configuration;
  559. if ($_configuration['multiple_access_urls']) {
  560. $url_access_id = api_get_current_access_url_id();
  561. if ($url_access_id != -1) {
  562. $tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
  563. $sql_get_course_list = "SELECT * FROM $main_course_table as course INNER JOIN $tbl_url_rel_course as url_rel_course
  564. ON (url_rel_course.course_code=course.code)
  565. WHERE access_url_id = $url_access_id AND category_code = '".Database::escape_string($_GET['category'])."' ORDER BY title, UPPER(visual_code)";
  566. }
  567. }
  568. // Removed: AND cours.visibility='".COURSE_VISIBILITY_OPEN_WORLD."'
  569. $sql_result_courses = Database::query($sql_get_course_list);
  570. while ($course_result = Database::fetch_array($sql_result_courses)) {
  571. $course_list[] = $course_result;
  572. }
  573. $platform_visible_courses = '';
  574. // $setting_show_also_closed_courses
  575. if ($user_identified) {
  576. if ($setting_show_also_closed_courses) {
  577. $platform_visible_courses = '';
  578. } else {
  579. $platform_visible_courses = " AND (t3.visibility='".COURSE_VISIBILITY_OPEN_WORLD."' OR t3.visibility='".COURSE_VISIBILITY_OPEN_PLATFORM."' )";
  580. }
  581. } else {
  582. if ($setting_show_also_closed_courses) {
  583. $platform_visible_courses = '';
  584. } else {
  585. $platform_visible_courses = " AND (t3.visibility='".COURSE_VISIBILITY_OPEN_WORLD."' )";
  586. }
  587. }
  588. $sqlGetSubCatList = "
  589. SELECT t1.name,t1.code,t1.parent_id,t1.children_count,COUNT(DISTINCT t3.code) AS nbCourse
  590. FROM $main_category_table t1
  591. LEFT JOIN $main_category_table t2 ON t1.code=t2.parent_id
  592. LEFT JOIN $main_course_table t3 ON (t3.category_code=t1.code $platform_visible_courses)
  593. WHERE t1.parent_id ". (empty ($category) ? "IS NULL" : "='$category'")."
  594. GROUP BY t1.name,t1.code,t1.parent_id,t1.children_count ORDER BY t1.tree_pos, t1.name";
  595. // Showing only the category of courses of the current access_url_id.
  596. global $_configuration;
  597. if ($_configuration['multiple_access_urls']) {
  598. $url_access_id = api_get_current_access_url_id();
  599. if ($url_access_id != -1) {
  600. $tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
  601. $sqlGetSubCatList = "
  602. SELECT t1.name,t1.code,t1.parent_id,t1.children_count,COUNT(DISTINCT t3.code) AS nbCourse
  603. FROM $main_category_table t1
  604. LEFT JOIN $main_category_table t2 ON t1.code=t2.parent_id
  605. LEFT JOIN $main_course_table t3 ON (t3.category_code=t1.code $platform_visible_courses)
  606. INNER JOIN $tbl_url_rel_course as url_rel_course
  607. ON (url_rel_course.course_code=t3.code)
  608. WHERE access_url_id = $url_access_id AND t1.parent_id ".(empty($category) ? "IS NULL" : "='$category'")."
  609. GROUP BY t1.name,t1.code,t1.parent_id,t1.children_count ORDER BY t1.tree_pos, t1.name";
  610. }
  611. }
  612. $resCats = Database::query($sqlGetSubCatList);
  613. $thereIsSubCat = false;
  614. if (Database::num_rows($resCats) > 0) {
  615. $htmlListCat = '<h4 style="margin-top: 0px;">'.get_lang('CatList').'</h4><ul>';
  616. while ($catLine = Database::fetch_array($resCats)) {
  617. if ($catLine['code'] != $category) {
  618. $category_has_open_courses = category_has_open_courses($catLine['code']);
  619. if ($category_has_open_courses) {
  620. // The category contains courses accessible to anonymous visitors.
  621. $htmlListCat .= '<li>';
  622. $htmlListCat .= '<a href="'.api_get_self().'?category='.$catLine['code'].'">'.$catLine['name'].'</a>';
  623. if (api_get_setting('show_number_of_courses') == 'true') {
  624. $htmlListCat .= ' ('.$catLine['nbCourse'].' '.get_lang('Courses').')';
  625. }
  626. $htmlListCat .= "</li>\n";
  627. $thereIsSubCat = true;
  628. } elseif ($catLine['children_count'] > 0) {
  629. // The category has children, subcategories.
  630. $htmlListCat .= '<li>';
  631. $htmlListCat .= '<a href="'.api_get_self().'?category='.$catLine['code'].'">'.$catLine['name'].'</a>';
  632. $htmlListCat .= "</li>\n";
  633. $thereIsSubCat = true;
  634. }
  635. /* End changed code to eliminate the (0 courses) after empty categories. */
  636. elseif (api_get_setting('show_empty_course_categories') == 'true') {
  637. $htmlListCat .= '<li>';
  638. $htmlListCat .= $catLine['name'];
  639. $htmlListCat .= "</li>\n";
  640. $thereIsSubCat = true;
  641. } // Else don't set thereIsSubCat to true to avoid printing things if not requested.
  642. } else {
  643. $htmlTitre = '<p>';
  644. if (api_get_setting('show_back_link_on_top_of_tree') == 'true') {
  645. $htmlTitre .= '<a href="'.api_get_self().'">&lt;&lt; '.get_lang('BackToHomePage').'</a>';
  646. }
  647. if (!is_null($catLine['parent_id']) || (api_get_setting('show_back_link_on_top_of_tree') != 'true' && !is_null($catLine['code']))) {
  648. $htmlTitre .= '<a href="'.api_get_self().'?category='.$catLine['parent_id'].'">&lt;&lt; '.get_lang('Up').'</a>';
  649. }
  650. $htmlTitre .= "</p>\n";
  651. if ($category != "" && !is_null($catLine['code'])) {
  652. $htmlTitre .= '<h3>'.$catLine['name']."</h3>\n";
  653. } else {
  654. $htmlTitre .= '<h3>'.get_lang('Categories')."</h3>\n";
  655. }
  656. }
  657. }
  658. $htmlListCat .= "</ul>\n";
  659. }
  660. echo $htmlTitre;
  661. if ($thereIsSubCat) {
  662. echo $htmlListCat;
  663. }
  664. while ($categoryName = Database::fetch_array($resCats)) {
  665. echo '<h3>', $categoryName['name'], "</h3>\n";
  666. }
  667. $numrows = Database::num_rows($sql_result_courses);
  668. $courses_list_string = '';
  669. $courses_shown = 0;
  670. if ($numrows > 0) {
  671. if ($thereIsSubCat) {
  672. $courses_list_string .= "<hr size=\"1\" noshade=\"noshade\">\n";
  673. }
  674. $courses_list_string .= '<h4 style="margin-top: 0px;">'.get_lang('CourseList')."</h4>\n<ul>\n";
  675. if (api_get_user_id()) {
  676. $courses_of_user = get_courses_of_user(api_get_user_id());
  677. }
  678. foreach ($course_list as $course) {
  679. // $setting_show_also_closed_courses
  680. if (!$setting_show_also_closed_courses) {
  681. // If we do not show the closed courses
  682. // we only show the courses that are open to the world (to everybody)
  683. // and the courses that are open to the platform (if the current user is a registered user.
  684. if( ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM) || ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)) {
  685. $courses_shown++;
  686. $courses_list_string .= "<li>\n";
  687. $courses_list_string .= '<a href="'.$web_course_path.$course['directory'].'/">'.$course['title'].'</a><br />';
  688. if (api_get_setting('display_coursecode_in_courselist') == 'true') {
  689. $courses_list_string .= $course['visual_code'];
  690. }
  691. if (api_get_setting('display_coursecode_in_courselist') == 'true' && api_get_setting('display_teacher_in_courselist') == 'true') {
  692. $courses_list_string .= ' - ';
  693. }
  694. if (api_get_setting('display_teacher_in_courselist') == 'true') {
  695. $courses_list_string .= $course['tutor_name'];
  696. }
  697. if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] != api_get_setting('platformLanguage')) {
  698. $courses_list_string .= ' - '.$course['course_language'];
  699. }
  700. $courses_list_string .= "</li>\n";
  701. }
  702. }
  703. // We DO show the closed courses.
  704. // The course is accessible if (link to the course homepage):
  705. // 1. the course is open to the world (doesn't matter if the user is logged in or not): $course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD);
  706. // 2. the user is logged in and the course is open to the world or open to the platform: ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM);
  707. // 3. the user is logged in and the user is subscribed to the course and the course visibility is not COURSE_VISIBILITY_CLOSED;
  708. // 4. the user is logged in and the user is course admin of te course (regardless of the course visibility setting);
  709. // 5. the user is the platform admin api_is_platform_admin().
  710. //
  711. else {
  712. $courses_shown++;
  713. $courses_list_string .= "<li>\n";
  714. if ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD
  715. || ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
  716. || ($user_identified && key_exists($course['code'], $courses_of_user) && $course['visibility'] != COURSE_VISIBILITY_CLOSED)
  717. || $courses_of_user[$course['code']]['status'] == '1'
  718. || api_is_platform_admin()) {
  719. $courses_list_string .= '<a href="'.$web_course_path.$course['directory'].'/">';
  720. }
  721. $courses_list_string .= $course['title'];
  722. if ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD
  723. || ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
  724. || ($user_identified && key_exists($course['code'], $courses_of_user) && $course['visibility'] != COURSE_VISIBILITY_CLOSED)
  725. || $courses_of_user[$course['code']]['status'] == '1'
  726. || api_is_platform_admin()) {
  727. $courses_list_string .= '</a><br />';
  728. }
  729. if (api_get_setting('display_coursecode_in_courselist') == 'true') {
  730. $courses_list_string .= ' '.$course['visual_code'];
  731. }
  732. if (api_get_setting('display_coursecode_in_courselist') == 'true' && api_get_setting('display_teacher_in_courselist') == 'true') {
  733. $courses_list_string .= ' - ';
  734. }
  735. if (api_get_setting('display_teacher_in_courselist') == 'true') {
  736. $courses_list_string .= $course['tutor_name'];
  737. }
  738. if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] != api_get_setting('platformLanguage')) {
  739. $courses_list_string .= ' - '.$course['course_language'];
  740. }
  741. if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] != api_get_setting('platformLanguage')) {
  742. $courses_list_string .= ' - '.$course['course_language'];
  743. }
  744. // We display a subscription link if:
  745. // 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
  746. // 2.
  747. if ($user_identified && !key_exists($course['code'], $courses_of_user)) {
  748. if ($course['subscribe'] == '1') {
  749. $courses_list_string .= '<form action="main/auth/courses.php?action=subscribe&category='.Security::remove_XSS($_GET['category']).'" method="post">';
  750. $courses_list_string .= '<input type="hidden" name="sec_token" value="'.$stok.'">';
  751. $courses_list_string .= '<input type="hidden" name="subscribe" value="'.$course['code'].'" />';
  752. $courses_list_string .= '<input type="image" name="unsub" src="main/img/enroll.gif" alt="'.get_lang('Subscribe').'" />'.get_lang('Subscribe').'</form>';
  753. } else {
  754. $courses_list_string .= '<br />'.get_lang('SubscribingNotAllowed');
  755. }
  756. }
  757. $courses_list_string .= "</li>\n";
  758. }
  759. }
  760. $courses_list_string .= "</ul>\n";
  761. } else {
  762. //echo '<blockquote>', get_lang('_No_course_publicly_available'), "</blockquote>\n";
  763. }
  764. if ($courses_shown > 0) { // Only display the list of courses and categories if there was more than
  765. // 0 courses visible to the world (we're in the anonymous list here).
  766. echo $courses_list_string;
  767. }
  768. if ($category != '') {
  769. echo '<p><a href="'.api_get_self().'"> ', Display :: return_icon('back.png', get_lang('BackToHomePage')), get_lang('BackToHomePage'), '</a></p>', "\n";
  770. }
  771. }
  772. /**
  773. * retrieves all the courses that the user has already subscribed to
  774. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University, Belgium
  775. * @param int $user_id: the id of the user
  776. * @return array an array containing all the information of the courses of the given user
  777. */
  778. function get_courses_of_user($user_id) {
  779. $table_course = Database::get_main_table(TABLE_MAIN_COURSE);
  780. $table_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
  781. // Secondly we select the courses that are in a category (user_course_cat <> 0) and sort these according to the sort of the category
  782. $user_id = intval($user_id);
  783. $sql_select_courses = "SELECT course.code k, course.visual_code vc, course.subscribe subscr, course.unsubscribe unsubscr,
  784. course.title i, course.tutor_name t, course.db_name db, course.directory dir, course_rel_user.status status,
  785. course_rel_user.sort sort, course_rel_user.user_course_cat user_course_cat
  786. FROM $table_course course,
  787. $table_course_user course_rel_user
  788. WHERE course.code = course_rel_user.course_code
  789. AND course_rel_user.user_id = '".$user_id."'
  790. AND course_rel_user.relation_type<>".COURSE_RELATION_TYPE_RRHH."
  791. ORDER BY course_rel_user.sort ASC";
  792. $result = Database::query($sql_select_courses);
  793. $courses = array();
  794. while ($row = Database::fetch_array($result)) {
  795. // We only need the database name of the course.
  796. $courses[$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']);
  797. }
  798. return $courses;
  799. }
  800. function show_right_block($title, $content) {
  801. $html = '';
  802. $html.= '<div id="menu" class="menu">';
  803. $html.= '<div class="menusection">';
  804. $html.= '<span class="menusectioncaption">'.$title.'</span>';
  805. $html.= $content;
  806. $html.= '</div>';
  807. $html.= '</div>';
  808. return $html;
  809. }