index.php 41 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('CHAMILO_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 (!api_get_user_id()) {
  107. $header_title = null;
  108. }*/
  109. $header_title = null;
  110. if (!api_is_anonymous()) {
  111. $header_title = " ";
  112. }
  113. Display::display_header($header_title);
  114. /* MAIN CODE */
  115. echo '<div class="maincontent" id="content">';
  116. // Plugins for loginpage_main AND campushomepage_main.
  117. if (!api_get_user_id()) {
  118. api_plugin('loginpage_main');
  119. } else {
  120. api_plugin('campushomepage_main');
  121. }
  122. $home = 'home/';
  123. if (api_get_multiple_access_url()) {
  124. $access_url_id = api_get_current_access_url_id();
  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. // if $clean_url == "localhost/" means that the multiple URL was not well configured we don't rename the $home variable
  132. if ($clean_url != 'localhost/')
  133. $home = 'home/'.$clean_url;
  134. }
  135. // Including the page for the news
  136. $page_included = false;
  137. if (!empty($_GET['include']) && preg_match('/^[a-zA-Z0-9_-]*\.html$/', $_GET['include'])) {
  138. $open = @(string)file_get_contents(api_get_path(SYS_PATH).$home.$_GET['include']);
  139. $open = api_to_system_encoding($open, api_detect_encoding(strip_tags($open)));
  140. echo $open;
  141. $page_included = true;
  142. } else {
  143. if (!empty($_SESSION['user_language_choice'])) {
  144. $user_selected_language = $_SESSION['user_language_choice'];
  145. } elseif (!empty($_SESSION['_user']['language'])) {
  146. $user_selected_language = $_SESSION['_user']['language'];
  147. } else {
  148. $user_selected_language = api_get_setting('platformLanguage');
  149. }
  150. if (!file_exists($home.'home_news_'.$user_selected_language.'.html')) {
  151. if (file_exists($home.'home_top.html')) {
  152. $home_top_temp = file($home.'home_top.html');
  153. } else {
  154. $home_top_temp = file($home_old.'home_top.html');
  155. }
  156. $home_top_temp = implode('', $home_top_temp);
  157. } else {
  158. if (file_exists($home.'home_top_'.$user_selected_language.'.html')) {
  159. $home_top_temp = file_get_contents($home.'home_top_'.$user_selected_language.'.html');
  160. } else {
  161. $home_top_temp = file_get_contents($home.'home_top.html');
  162. }
  163. }
  164. if (trim($home_top_temp) == '' && api_is_platform_admin()) {
  165. $home_top_temp = get_lang('PortalHomepageDefaultIntroduction');
  166. }
  167. $open = str_replace('{rel_path}', api_get_path(REL_PATH), $home_top_temp);
  168. $open = api_to_system_encoding($open, api_detect_encoding(strip_tags($open)));
  169. echo $open;
  170. }
  171. // Display courses and category list.
  172. if (!$page_included) {
  173. // Display System announcements
  174. $announcement = isset($_GET['announcement']) ? $_GET['announcement'] : -1;
  175. $announcement = intval($announcement);
  176. if (isset($_user['user_id'])) {
  177. $visibility = api_is_allowed_to_create_course() ? VISIBLE_TEACHER : VISIBLE_STUDENT;
  178. SystemAnnouncementManager :: display_announcements($visibility, $announcement);
  179. } else {
  180. SystemAnnouncementManager :: display_announcements(VISIBLE_GUEST, $announcement);
  181. }
  182. if (api_get_setting('display_categories_on_homepage') == 'true') {
  183. echo '<div class="home_cats">';
  184. display_anonymous_course_list();
  185. echo '</div>';
  186. }
  187. }
  188. echo '</div>';
  189. echo '<div id="menu-wrapper">';
  190. if (!api_is_anonymous()) {
  191. // @todo move all this in a class/function
  192. //Always show the user image
  193. $img_array = UserManager::get_user_picture_path_by_id(api_get_user_id(), 'web', true, true);
  194. $no_image = false;
  195. if ($img_array['file'] == 'unknown.jpg') {
  196. $no_image = true;
  197. }
  198. $img_array = UserManager::get_picture_user(api_get_user_id(), $img_array['file'], 50, USER_IMAGE_SIZE_MEDIUM, ' width="90" height="90" ');
  199. $profile_content ='<div id="social_widget">';
  200. $profile_content .= '<div id="social_widget_image">';
  201. if (api_get_setting('allow_social_tool') == 'true') {
  202. if (!$no_image) {
  203. $profile_content .='<a href="'.api_get_path(WEB_PATH).'main/social/home.php"><img src="'.$img_array['file'].'" '.$img_array['style'].' border="1"></a>';
  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. } else {
  208. $profile_content .='<a href="'.api_get_path(WEB_PATH).'main/auth/profile.php"><img title="'.get_lang('EditProfile').'" src="'.$img_array['file'].'" '.$img_array['style'].' border="1"></a>';
  209. }
  210. $profile_content .= ' </div></div>';
  211. if (api_get_setting('allow_message_tool') == 'true') {
  212. require_once api_get_path(LIBRARY_PATH).'message.lib.php';
  213. require_once api_get_path(LIBRARY_PATH).'social.lib.php';
  214. require_once api_get_path(LIBRARY_PATH).'group_portal_manager.lib.php';
  215. // New messages.
  216. $number_of_new_messages = MessageManager::get_new_messages();
  217. // New contact invitations.
  218. $number_of_new_messages_of_friend = SocialManager::get_message_number_invitation_by_user_id(api_get_user_id());
  219. // New group invitations sent by a moderator.
  220. $group_pending_invitations = GroupPortalManager::get_groups_by_user(api_get_user_id(), GROUP_USER_PERMISSION_PENDING_INVITATION, false);
  221. $group_pending_invitations = count($group_pending_invitations);
  222. $total_invitations = $number_of_new_messages_of_friend + $group_pending_invitations;
  223. $cant_msg = '';
  224. if ($number_of_new_messages > 0) {
  225. $cant_msg = ' ('.$number_of_new_messages.')';
  226. }
  227. $profile_content .= '<div class="clear"></div>';
  228. $profile_content .= '<div class="message-content"><ul class="menulist">';
  229. $link = '';
  230. if (api_get_setting('allow_social_tool') == 'true') {
  231. $link = '?f=social';
  232. }
  233. $profile_content .= '<li><a href="'.api_get_path(WEB_PATH).'main/messages/inbox.php'.$link.'" class="message-body">'.get_lang('Inbox').$cant_msg.' </a></li>';
  234. $profile_content .= '<li><a href="'.api_get_path(WEB_PATH).'main/messages/new_message.php'.$link.'" class="message-body">'.get_lang('Compose').' </a></li>';
  235. if (api_get_setting('allow_social_tool') == 'true') {
  236. if ($total_invitations == 0) {
  237. $total_invitations = '';
  238. } else {
  239. $total_invitations = ' ('.$total_invitations.')';
  240. }
  241. $profile_content .= '<li><a href="'.api_get_path(WEB_PATH).'main/social/invitations.php" class="message-body">'.get_lang('PendingInvitations').' '.$total_invitations.' </a></li>';
  242. }
  243. $profile_content .= '</ul>';
  244. $profile_content .= '</div>';
  245. }
  246. //Profile content
  247. echo show_right_block(get_lang('Profile'), $profile_content);
  248. }
  249. // Display right menu: language form, login section + useful weblinks.
  250. display_anonymous_right_menu();
  251. echo '</div>';
  252. /* Footer */
  253. Display :: display_footer();
  254. /* Functions */
  255. /**
  256. * This function handles the logout and is called whenever there is a $_GET['logout']
  257. *
  258. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
  259. */
  260. function logout() {
  261. global $_configuration, $extAuthSource;
  262. // Variable initialisation.
  263. $query_string = '';
  264. if (!empty($_SESSION['user_language_choice'])) {
  265. $query_string = '?language='.$_SESSION['user_language_choice'];
  266. }
  267. // Database table definition.
  268. $tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
  269. // Selecting the last login of the user.
  270. $uid = intval($_GET['uid']);
  271. $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";
  272. $q_last_connection = Database::query($sql_last_connection);
  273. if (Database::num_rows($q_last_connection) > 0) {
  274. $i_id_last_connection = Database::result($q_last_connection, 0, 'login_id');
  275. }
  276. if (!isset($_SESSION['login_as'])) {
  277. $current_date = date('Y-m-d H:i:s', time());
  278. $s_sql_update_logout_date = "UPDATE $tbl_track_login SET logout_date='".$current_date."' WHERE login_id='$i_id_last_connection'";
  279. Database::query($s_sql_update_logout_date);
  280. }
  281. LoginDelete($uid); // From inc/lib/online.inc.php - removes the "online" status.
  282. // The following code enables the use of an external logout function.
  283. // Example: define a $extAuthSource['ldap']['logout'] = 'file.php' in configuration.php.
  284. // Then a function called ldap_logout() inside that file
  285. // (using *authent_name*_logout as the function name) and the following code
  286. // will find and execute it.
  287. $uinfo = api_get_user_info($uid);
  288. if (($uinfo['auth_source'] != PLATFORM_AUTH_SOURCE) && is_array($extAuthSource)) {
  289. if (is_array($extAuthSource[$uinfo['auth_source']])) {
  290. $subarray = $extAuthSource[$uinfo['auth_source']];
  291. if (!empty($subarray['logout']) && file_exists($subarray['logout'])) {
  292. include_once ($subarray['logout']);
  293. $logout_function = $uinfo['auth_source'].'_logout';
  294. if (function_exists($logout_function)) {
  295. $logout_function($uinfo);
  296. }
  297. }
  298. }
  299. }
  300. exit_of_chat($uid);
  301. api_session_destroy();
  302. header("Location: index.php$query_string");
  303. exit();
  304. }
  305. /**
  306. * This function checks if there are courses that are open to the world in the platform course categories (=faculties)
  307. *
  308. * @param unknown_type $category
  309. * @return boolean
  310. */
  311. function category_has_open_courses($category) {
  312. global $setting_show_also_closed_courses;
  313. $user_identified = (api_get_user_id() > 0 && !api_is_anonymous());
  314. $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
  315. $sql_query = "SELECT * FROM $main_course_table WHERE category_code='$category'";
  316. $sql_result = Database::query($sql_query);
  317. while ($course = Database::fetch_array($sql_result)) {
  318. if (!$setting_show_also_closed_courses) {
  319. if ((api_get_user_id() > 0
  320. && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
  321. || ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)) {
  322. return true; //at least one open course
  323. }
  324. } else {
  325. if (isset($course['visibility'])) {
  326. return true; // At least one course (it does not matter weither it's open or not because $setting_show_also_closed_courses = true).
  327. }
  328. }
  329. }
  330. return false;
  331. }
  332. /**
  333. * Display create course link
  334. */
  335. function display_create_course_link() {
  336. echo '<li><a href="main/create_course/add_course.php">'.
  337. (api_get_setting('course_validation') == 'true' ? get_lang('CreateCourseRequest') : get_lang('CourseCreate')).'</a></li>';
  338. }
  339. /**
  340. * Display edit course list links
  341. */
  342. function display_edit_course_list_links() {
  343. echo '<li><a href="main/auth/courses.php">'.get_lang('CourseManagement').'</a></li>';
  344. }
  345. /**
  346. * Display dashboard link
  347. */
  348. function display_dashboard_link() {
  349. echo '<li><a href="main/dashboard/index.php">'.get_lang('Dashboard').'</a></li>';
  350. }
  351. /**
  352. * Displays the right-hand menu for anonymous users:
  353. * login form, useful links, help section
  354. * Warning: function defines globals
  355. * @version 1.0.1
  356. * @todo does $_plugins need to be global?
  357. */
  358. function display_anonymous_right_menu() {
  359. global $loginFailed, $_plugins, $_user, $menu_navigation, $home, $home_old;
  360. $platformLanguage = api_get_setting('platformLanguage');
  361. $sys_path = api_get_path(SYS_PATH);
  362. $user_selected_language = api_get_interface_language();
  363. $display_add_course_link= api_is_allowed_to_create_course() && ($_SESSION['studentview'] != 'studentenview');
  364. $current_user_id = api_get_user_id();
  365. if (!empty($current_user_id)) {
  366. // tabs that are deactivated are added here
  367. $show_menu = false;
  368. $show_create_link = false;
  369. $show_course_link = false;
  370. if ($display_add_course_link) {
  371. //display_create_course_link();
  372. $show_menu = true;
  373. $show_create_link = true;
  374. }
  375. if (api_is_platform_admin() || api_is_course_admin() || api_is_allowed_to_create_course()) {
  376. $show_menu = true;
  377. $show_course_link = true;
  378. } else {
  379. if (api_get_setting('allow_students_to_browse_courses') == 'true') {
  380. $show_menu = true;
  381. $show_course_link = true;
  382. }
  383. }
  384. if ($show_menu && ($show_create_link || $show_course_link )) {
  385. $show_menu = true;
  386. } else {
  387. $show_menu = false;
  388. }
  389. }
  390. if (!($current_user_id) || api_is_anonymous($current_user_id) || $show_menu) {
  391. echo '<div class="menu" id="menu">';
  392. }
  393. if (!($current_user_id) || api_is_anonymous($current_user_id) ) {
  394. // Only display if the user isn't logged in.
  395. api_display_language_form(true);
  396. echo '<br />';
  397. display_login_form();
  398. if ($loginFailed) {
  399. echo '<br />';
  400. handle_login_failed();
  401. }
  402. if (api_get_setting('allow_lostpassword') == 'true' || api_get_setting('allow_registration') == 'true') {
  403. echo '<div class="menusection"><span class="menusectioncaption">'.get_lang('MenuUser').'</span><ul class="menulist">';
  404. if (api_get_setting('allow_registration') != 'false') {
  405. echo '<li><a href="main/auth/inscription.php">'.get_lang('Reg').'</a></li>';
  406. }
  407. if (api_get_setting('allow_lostpassword') == 'true') {
  408. display_lost_password_info();
  409. }
  410. echo '</ul></div>';
  411. }
  412. if (api_number_of_plugins('loginpage_menu') > 0) {
  413. echo '<div class="note" style="background: none">';
  414. api_plugin('loginpage_menu');
  415. echo '</div>';
  416. }
  417. }
  418. // My Account section.
  419. if ($show_menu) {
  420. echo '<div class="menusection">';
  421. echo '<span class="menusectioncaption">'.get_lang('MenuUser').'</span>';
  422. echo '<ul class="menulist">';
  423. if ($show_create_link) {
  424. display_create_course_link();
  425. }
  426. if ($show_course_link) {
  427. if (!api_is_drh() && !api_is_session_admin()) {
  428. display_edit_course_list_links();
  429. } else {
  430. display_dashboard_link();
  431. }
  432. }
  433. echo '</ul></div>';
  434. }
  435. if (!($current_user_id) || api_is_anonymous($current_user_id) || $show_menu) {
  436. echo '</div>';
  437. }
  438. // Notice
  439. $home_notice = @(string)file_get_contents($sys_path.$home.'home_notice_'.$user_selected_language.'.html');
  440. if (empty($home_notice)) {
  441. $home_notice = @(string)file_get_contents($sys_path.$home.'home_notice.html');
  442. }
  443. if (!empty($home_notice)) {
  444. $home_notice = api_to_system_encoding($home_notice, api_detect_encoding(strip_tags($home_notice)));
  445. echo show_right_block('', $home_notice, 'note');
  446. }
  447. if (isset($_SESSION['_user']['user_id']) && $_SESSION['_user']['user_id'] != 0) {
  448. // Deleting the myprofile link.
  449. if (api_get_setting('allow_social_tool') == 'true') {
  450. unset($menu_navigation['myprofile']);
  451. }
  452. if (!empty($menu_navigation)) {
  453. $content = '<ul class="menulist">';
  454. foreach ($menu_navigation as $section => $navigation_info) {
  455. $current = $section == $GLOBALS['this_section'] ? ' id="current"' : '';
  456. $content .='<li'.$current.'><a href="'.$navigation_info['url'].'" target="_self">'.$navigation_info['title'].'</a></li>';
  457. }
  458. $content .= '</ul>';
  459. echo show_right_block(get_lang('MainNavigation'), $content);
  460. }
  461. }
  462. // Help section.
  463. /* Hide right menu "general" and other parts on anonymous right menu. */
  464. if (!isset($user_selected_language)) {
  465. $user_selected_language = $platformLanguage;
  466. }
  467. $home_menu = @(string)file_get_contents($sys_path.$home.'home_menu_'.$user_selected_language.'.html');
  468. if (!empty($home_menu)) {
  469. $home_menu_content .= '<ul class="menulist">';
  470. $home_menu_content .= api_to_system_encoding($home_menu, api_detect_encoding(strip_tags($home_menu)));
  471. $home_menu_content .= '</ul>';
  472. echo show_right_block(get_lang('MenuGeneral'), $home_menu_content);
  473. }
  474. //Plugin
  475. if ($_user['user_id'] && api_number_of_plugins('campushomepage_menu') > 0) {
  476. ob_start();
  477. api_plugin('campushomepage_menu');
  478. $plugin_content = ob_get_contents();
  479. ob_end_clean();
  480. echo show_right_block('', $plugin_content);
  481. }
  482. }
  483. /**
  484. * Reacts on a failed login:
  485. * Displays an explanation with a link to the registration form.
  486. *
  487. * @version 1.0.1
  488. */
  489. function handle_login_failed() {
  490. if (!isset($_GET['error'])) {
  491. $message = get_lang('InvalidId');
  492. if (api_is_self_registration_allowed()) {
  493. $message = get_lang('InvalidForSelfRegistration');
  494. }
  495. } else {
  496. switch ($_GET['error']) {
  497. case '':
  498. $message = get_lang('InvalidId');
  499. if (api_is_self_registration_allowed()) {
  500. $message = get_lang('InvalidForSelfRegistration');
  501. }
  502. break;
  503. case 'account_expired':
  504. $message = get_lang('AccountExpired');
  505. break;
  506. case 'account_inactive':
  507. $message = get_lang('AccountInactive');
  508. break;
  509. case 'user_password_incorrect':
  510. $message = get_lang('InvalidId');
  511. break;
  512. case 'access_url_inactive':
  513. $message = get_lang('AccountURLInactive');
  514. break;
  515. }
  516. }
  517. echo '<div id="login_fail">'.$message.'</div>';
  518. }
  519. /**
  520. * Adds a form to let users login
  521. * @version 1.1
  522. */
  523. function display_login_form() {
  524. $form = new FormValidator('formLogin');
  525. $form->addElement('text', 'login', get_lang('UserName'), array('size' => 17));
  526. $form->addElement('password', 'password', get_lang('Pass'), array('size' => 17));
  527. $form->addElement('style_submit_button','submitAuth', get_lang('LoginEnter'), array('class' => 'login'));
  528. $renderer =& $form->defaultRenderer();
  529. $renderer->setElementTemplate('<div><label>{label}</label></div><div>{element}</div>');
  530. $form->display();
  531. if (api_get_setting('openid_authentication') == 'true') {
  532. include_once 'main/auth/openid/login.php';
  533. echo '<div>'.openid_form().'</div>';
  534. }
  535. }
  536. /**
  537. * Displays a link to the lost password section
  538. */
  539. function display_lost_password_info() {
  540. echo '<li><a href="main/auth/lostPassword.php">'.get_lang('LostPassword').'</a></li>';
  541. }
  542. /**
  543. * Display list of courses in a category.
  544. * (for anonymous users)
  545. *
  546. * @version 1.1
  547. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University - refactoring and code cleaning
  548. */
  549. function display_anonymous_course_list() {
  550. $ctok = $_SESSION['sec_token'];
  551. $stok = Security::get_token();
  552. // Initialization.
  553. $user_identified = (api_get_user_id() > 0 && !api_is_anonymous());
  554. $web_course_path = api_get_path(WEB_COURSE_PATH);
  555. $category = Database::escape_string($_GET['category']);
  556. global $setting_show_also_closed_courses;
  557. // Database table definitions.
  558. $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
  559. $main_category_table = Database :: get_main_table(TABLE_MAIN_CATEGORY);
  560. $platformLanguage = api_get_setting('platformLanguage');
  561. // Get list of courses in category $category.
  562. $sql_get_course_list = "SELECT * FROM $main_course_table cours
  563. WHERE category_code = '".Database::escape_string($_GET['category'])."'
  564. ORDER BY title, UPPER(visual_code)";
  565. // Showing only the courses of the current access_url_id.
  566. global $_configuration;
  567. if ($_configuration['multiple_access_urls']) {
  568. $url_access_id = api_get_current_access_url_id();
  569. if ($url_access_id != -1) {
  570. $tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
  571. $sql_get_course_list = "SELECT * FROM $main_course_table as course INNER JOIN $tbl_url_rel_course as url_rel_course
  572. ON (url_rel_course.course_code=course.code)
  573. WHERE access_url_id = $url_access_id AND category_code = '".Database::escape_string($_GET['category'])."' ORDER BY title, UPPER(visual_code)";
  574. }
  575. }
  576. // Removed: AND cours.visibility='".COURSE_VISIBILITY_OPEN_WORLD."'
  577. $sql_result_courses = Database::query($sql_get_course_list);
  578. while ($course_result = Database::fetch_array($sql_result_courses)) {
  579. $course_list[] = $course_result;
  580. }
  581. $platform_visible_courses = '';
  582. // $setting_show_also_closed_courses
  583. if ($user_identified) {
  584. if ($setting_show_also_closed_courses) {
  585. $platform_visible_courses = '';
  586. } else {
  587. $platform_visible_courses = " AND (t3.visibility='".COURSE_VISIBILITY_OPEN_WORLD."' OR t3.visibility='".COURSE_VISIBILITY_OPEN_PLATFORM."' )";
  588. }
  589. } else {
  590. if ($setting_show_also_closed_courses) {
  591. $platform_visible_courses = '';
  592. } else {
  593. $platform_visible_courses = " AND (t3.visibility='".COURSE_VISIBILITY_OPEN_WORLD."' )";
  594. }
  595. }
  596. $sqlGetSubCatList = "
  597. SELECT t1.name,t1.code,t1.parent_id,t1.children_count,COUNT(DISTINCT t3.code) AS nbCourse
  598. FROM $main_category_table t1
  599. LEFT JOIN $main_category_table t2 ON t1.code=t2.parent_id
  600. LEFT JOIN $main_course_table t3 ON (t3.category_code=t1.code $platform_visible_courses)
  601. WHERE t1.parent_id ". (empty ($category) ? "IS NULL" : "='$category'")."
  602. GROUP BY t1.name,t1.code,t1.parent_id,t1.children_count ORDER BY t1.tree_pos, t1.name";
  603. // Showing only the category of courses of the current access_url_id.
  604. global $_configuration;
  605. if ($_configuration['multiple_access_urls']) {
  606. $url_access_id = api_get_current_access_url_id();
  607. if ($url_access_id != -1) {
  608. $tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
  609. $sqlGetSubCatList = "
  610. SELECT t1.name,t1.code,t1.parent_id,t1.children_count,COUNT(DISTINCT t3.code) AS nbCourse
  611. FROM $main_category_table t1
  612. LEFT JOIN $main_category_table t2 ON t1.code=t2.parent_id
  613. LEFT JOIN $main_course_table t3 ON (t3.category_code=t1.code $platform_visible_courses)
  614. INNER JOIN $tbl_url_rel_course as url_rel_course
  615. ON (url_rel_course.course_code=t3.code)
  616. WHERE access_url_id = $url_access_id AND t1.parent_id ".(empty($category) ? "IS NULL" : "='$category'")."
  617. GROUP BY t1.name,t1.code,t1.parent_id,t1.children_count ORDER BY t1.tree_pos, t1.name";
  618. }
  619. }
  620. $resCats = Database::query($sqlGetSubCatList);
  621. $thereIsSubCat = false;
  622. if (Database::num_rows($resCats) > 0) {
  623. $htmlListCat = '<h4 style="margin-top: 0px;">'.get_lang('CatList').'</h4><ul>';
  624. while ($catLine = Database::fetch_array($resCats)) {
  625. if ($catLine['code'] != $category) {
  626. $category_has_open_courses = category_has_open_courses($catLine['code']);
  627. if ($category_has_open_courses) {
  628. // The category contains courses accessible to anonymous visitors.
  629. $htmlListCat .= '<li>';
  630. $htmlListCat .= '<a href="'.api_get_self().'?category='.$catLine['code'].'">'.$catLine['name'].'</a>';
  631. if (api_get_setting('show_number_of_courses') == 'true') {
  632. $htmlListCat .= ' ('.$catLine['nbCourse'].' '.get_lang('Courses').')';
  633. }
  634. $htmlListCat .= "</li>\n";
  635. $thereIsSubCat = true;
  636. } elseif ($catLine['children_count'] > 0) {
  637. // The category has children, subcategories.
  638. $htmlListCat .= '<li>';
  639. $htmlListCat .= '<a href="'.api_get_self().'?category='.$catLine['code'].'">'.$catLine['name'].'</a>';
  640. $htmlListCat .= "</li>\n";
  641. $thereIsSubCat = true;
  642. }
  643. /* End changed code to eliminate the (0 courses) after empty categories. */
  644. elseif (api_get_setting('show_empty_course_categories') == 'true') {
  645. $htmlListCat .= '<li>';
  646. $htmlListCat .= $catLine['name'];
  647. $htmlListCat .= "</li>\n";
  648. $thereIsSubCat = true;
  649. } // Else don't set thereIsSubCat to true to avoid printing things if not requested.
  650. } else {
  651. $htmlTitre = '<p>';
  652. if (api_get_setting('show_back_link_on_top_of_tree') == 'true') {
  653. $htmlTitre .= '<a href="'.api_get_self().'">&lt;&lt; '.get_lang('BackToHomePage').'</a>';
  654. }
  655. if (!is_null($catLine['parent_id']) || (api_get_setting('show_back_link_on_top_of_tree') != 'true' && !is_null($catLine['code']))) {
  656. $htmlTitre .= '<a href="'.api_get_self().'?category='.$catLine['parent_id'].'">&lt;&lt; '.get_lang('Up').'</a>';
  657. }
  658. $htmlTitre .= "</p>\n";
  659. if ($category != "" && !is_null($catLine['code'])) {
  660. $htmlTitre .= '<h3>'.$catLine['name']."</h3>\n";
  661. } else {
  662. $htmlTitre .= '<h3>'.get_lang('Categories')."</h3>\n";
  663. }
  664. }
  665. }
  666. $htmlListCat .= "</ul>\n";
  667. }
  668. echo $htmlTitre;
  669. if ($thereIsSubCat) {
  670. echo $htmlListCat;
  671. }
  672. while ($categoryName = Database::fetch_array($resCats)) {
  673. echo '<h3>', $categoryName['name'], "</h3>\n";
  674. }
  675. $numrows = Database::num_rows($sql_result_courses);
  676. $courses_list_string = '';
  677. $courses_shown = 0;
  678. if ($numrows > 0) {
  679. if ($thereIsSubCat) {
  680. $courses_list_string .= "<hr size=\"1\" noshade=\"noshade\">\n";
  681. }
  682. $courses_list_string .= '<h4 style="margin-top: 0px;">'.get_lang('CourseList')."</h4>\n<ul>\n";
  683. if (api_get_user_id()) {
  684. $courses_of_user = get_courses_of_user(api_get_user_id());
  685. }
  686. foreach ($course_list as $course) {
  687. // $setting_show_also_closed_courses
  688. if (!$setting_show_also_closed_courses) {
  689. // If we do not show the closed courses
  690. // we only show the courses that are open to the world (to everybody)
  691. // and the courses that are open to the platform (if the current user is a registered user.
  692. if( ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM) || ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)) {
  693. $courses_shown++;
  694. $courses_list_string .= "<li>\n";
  695. $courses_list_string .= '<a href="'.$web_course_path.$course['directory'].'/">'.$course['title'].'</a><br />';
  696. if (api_get_setting('display_coursecode_in_courselist') == 'true') {
  697. $courses_list_string .= $course['visual_code'];
  698. }
  699. if (api_get_setting('display_coursecode_in_courselist') == 'true' && api_get_setting('display_teacher_in_courselist') == 'true') {
  700. $courses_list_string .= ' - ';
  701. }
  702. if (api_get_setting('display_teacher_in_courselist') == 'true') {
  703. $courses_list_string .= $course['tutor_name'];
  704. }
  705. if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] != api_get_setting('platformLanguage')) {
  706. $courses_list_string .= ' - '.$course['course_language'];
  707. }
  708. $courses_list_string .= "</li>\n";
  709. }
  710. }
  711. // We DO show the closed courses.
  712. // The course is accessible if (link to the course homepage):
  713. // 1. the course is open to the world (doesn't matter if the user is logged in or not): $course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD);
  714. // 2. the user is logged in and the course is open to the world or open to the platform: ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM);
  715. // 3. the user is logged in and the user is subscribed to the course and the course visibility is not COURSE_VISIBILITY_CLOSED;
  716. // 4. the user is logged in and the user is course admin of te course (regardless of the course visibility setting);
  717. // 5. the user is the platform admin api_is_platform_admin().
  718. //
  719. else {
  720. $courses_shown++;
  721. $courses_list_string .= "<li>\n";
  722. if ($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. $courses_list_string .= '<a href="'.$web_course_path.$course['directory'].'/">';
  728. }
  729. $courses_list_string .= $course['title'];
  730. if ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD
  731. || ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
  732. || ($user_identified && key_exists($course['code'], $courses_of_user) && $course['visibility'] != COURSE_VISIBILITY_CLOSED)
  733. || $courses_of_user[$course['code']]['status'] == '1'
  734. || api_is_platform_admin()) {
  735. $courses_list_string .= '</a><br />';
  736. }
  737. if (api_get_setting('display_coursecode_in_courselist') == 'true') {
  738. $courses_list_string .= ' '.$course['visual_code'];
  739. }
  740. if (api_get_setting('display_coursecode_in_courselist') == 'true' && api_get_setting('display_teacher_in_courselist') == 'true') {
  741. $courses_list_string .= ' - ';
  742. }
  743. if (api_get_setting('display_teacher_in_courselist') == 'true') {
  744. $courses_list_string .= $course['tutor_name'];
  745. }
  746. if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] != api_get_setting('platformLanguage')) {
  747. $courses_list_string .= ' - '.$course['course_language'];
  748. }
  749. if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] != api_get_setting('platformLanguage')) {
  750. $courses_list_string .= ' - '.$course['course_language'];
  751. }
  752. // We display a subscription link if:
  753. // 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
  754. // 2.
  755. if ($user_identified && !key_exists($course['code'], $courses_of_user)) {
  756. if ($course['subscribe'] == '1') {
  757. $courses_list_string .= '<form action="main/auth/courses.php?action=subscribe&category='.Security::remove_XSS($_GET['category']).'" method="post">';
  758. $courses_list_string .= '<input type="hidden" name="sec_token" value="'.$stok.'">';
  759. $courses_list_string .= '<input type="hidden" name="subscribe" value="'.$course['code'].'" />';
  760. $courses_list_string .= '<input type="image" name="unsub" src="main/img/enroll.gif" alt="'.get_lang('Subscribe').'" />'.get_lang('Subscribe').'</form>';
  761. } else {
  762. $courses_list_string .= '<br />'.get_lang('SubscribingNotAllowed');
  763. }
  764. }
  765. $courses_list_string .= "</li>\n";
  766. }
  767. }
  768. $courses_list_string .= "</ul>\n";
  769. } else {
  770. //echo '<blockquote>', get_lang('_No_course_publicly_available'), "</blockquote>\n";
  771. }
  772. if ($courses_shown > 0) { // Only display the list of courses and categories if there was more than
  773. // 0 courses visible to the world (we're in the anonymous list here).
  774. echo $courses_list_string;
  775. }
  776. if ($category != '') {
  777. echo '<p><a href="'.api_get_self().'"> ', Display :: return_icon('back.png', get_lang('BackToHomePage')), get_lang('BackToHomePage'), '</a></p>', "\n";
  778. }
  779. }
  780. /**
  781. * retrieves all the courses that the user has already subscribed to
  782. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University, Belgium
  783. * @param int $user_id: the id of the user
  784. * @return array an array containing all the information of the courses of the given user
  785. */
  786. function get_courses_of_user($user_id) {
  787. $table_course = Database::get_main_table(TABLE_MAIN_COURSE);
  788. $table_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
  789. // Secondly we select the courses that are in a category (user_course_cat <> 0) and sort these according to the sort of the category
  790. $user_id = intval($user_id);
  791. $sql_select_courses = "SELECT course.code k, course.visual_code vc, course.subscribe subscr, course.unsubscribe unsubscr,
  792. course.title i, course.tutor_name t, course.db_name db, course.directory dir, course_rel_user.status status,
  793. course_rel_user.sort sort, course_rel_user.user_course_cat user_course_cat
  794. FROM $table_course course,
  795. $table_course_user course_rel_user
  796. WHERE course.code = course_rel_user.course_code
  797. AND course_rel_user.user_id = '".$user_id."'
  798. AND course_rel_user.relation_type<>".COURSE_RELATION_TYPE_RRHH."
  799. ORDER BY course_rel_user.sort ASC";
  800. $result = Database::query($sql_select_courses);
  801. $courses = array();
  802. while ($row = Database::fetch_array($result)) {
  803. // We only need the database name of the course.
  804. $courses[$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']);
  805. }
  806. return $courses;
  807. }
  808. function show_right_block($title, $content, $class = '') {
  809. $html = '';
  810. $html.= '<div id="menu" class="menu">';
  811. $html.= '<div class="menusection '.$class.' ">';
  812. if (!empty($title)) {
  813. $html.= '<span class="menusectioncaption">'.$title.'</span>';
  814. }
  815. $html.= $content;
  816. $html.= '</div>';
  817. $html.= '</div>';
  818. return $html;
  819. }