index.php 21 KB

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  1. <?php
  2. /*
  3. DOKEOS - elearning and course management software
  4. For a full list of contributors, see documentation/credits.html
  5. This program is free software; you can redistribute it and/or
  6. modify it under the terms of the GNU General Public License
  7. as published by the Free Software Foundation; either version 2
  8. of the License, or (at your option) any later version.
  9. See "documentation/licence.html" more details.
  10. Contact:
  11. Dokeos
  12. Rue des Palais 44 Paleizenstraat
  13. B-1030 Brussels - Belgium
  14. Tel. +32 (2) 211 34 56
  15. */
  16. /**
  17. * @package dokeos.main
  18. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University, Refactoring
  19. * @version $Id: index.php 13120 2007-09-20 05:51:07Z yannoo $
  20. * @todo check the different @todos in this page and really do them
  21. * @todo check if the news management works as expected
  22. */
  23. // only this script should have this constant defined. This is used to activate the javascript that
  24. // gives the login name automatic focus in header.inc.html.
  25. /** @todo Couldn't this be done using the $HtmlHeadXtra array? */
  26. define('DOKEOS_HOMEPAGE', true);
  27. // the language file
  28. $language_file = array ('courses', 'index');
  29. /* Flag forcing the 'current course' reset, as we're not inside a course anymore */
  30. // maybe we should change this into an api function? an example: Coursemanager::unset();
  31. $cidReset = true;
  32. /*
  33. -----------------------------------------------------------
  34. Included libraries
  35. -----------------------------------------------------------
  36. */
  37. /** @todo make all the library files consistent use filename.lib.php and not filename.lib.inc.php */
  38. require_once ('./main/inc/global.inc.php');
  39. include_once (api_get_path(LIBRARY_PATH).'course.lib.php');
  40. include_once (api_get_path(LIBRARY_PATH).'debug.lib.inc.php');
  41. include_once (api_get_path(LIBRARY_PATH).'events.lib.inc.php');
  42. include_once (api_get_path(LIBRARY_PATH).'system_announcements.lib.php');
  43. include_once (api_get_path(LIBRARY_PATH).'groupmanager.lib.php');
  44. include_once (api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php');
  45. $loginFailed = isset($_GET['loginFailed']) ? true : isset($loginFailed);
  46. // the section (for the tabs)
  47. $this_section = SECTION_CAMPUS;
  48. /*
  49. -----------------------------------------------------------
  50. Action Handling
  51. -----------------------------------------------------------
  52. */
  53. /** @todo wouldn't it make more sense if this would be done in local.inc.php so that local.inc.php become the only place where authentication is done?
  54. * by doing this you could logout from any page instead of only from index.php. From the moment there is a logout=true in the url you will be logged out
  55. * this can be usefull when you are on an open course and you need to log in to edit something and you immediately want to check how anonymous users
  56. * will see it.
  57. */
  58. if ($_GET['logout'])
  59. {
  60. logout();
  61. }
  62. /*
  63. -----------------------------------------------------------
  64. Table definitions
  65. -----------------------------------------------------------
  66. */
  67. $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
  68. $main_category_table = Database :: get_main_table(TABLE_MAIN_CATEGORY);
  69. $track_login_table = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
  70. /*
  71. -----------------------------------------------------------
  72. Constants and CONFIGURATION parameters
  73. -----------------------------------------------------------
  74. */
  75. /** @todo these configuration settings should move to the dokeos config settings */
  76. /** defines wether or not anonymous visitors can see a list of the courses on the Dokeos homepage that are open to the world */
  77. $_setting['display_courses_to_anonymous_users'] = 'true';
  78. /** @todo remove this piece of code because this is not used */
  79. if (isset ($_user['user_id']))
  80. {
  81. $nameTools = api_get_setting('siteName');
  82. }
  83. /*
  84. ==============================================================================
  85. LOGIN
  86. ==============================================================================
  87. */
  88. /**
  89. * @todo This piece of code should probably move to local.inc.php where the actual login / logout procedure is handled.
  90. * @todo consider removing this piece of code because does nothing.
  91. */
  92. if ($_GET["submitAuth"] == 1)
  93. {
  94. // nice lie!!!
  95. echo "Attempted breakin - sysadmins notified.";
  96. session_destroy();
  97. die();
  98. }
  99. /**
  100. * @todo This piece of code should probably move to local.inc.php where the actual login procedure is handled.
  101. * @todo check if this code is used. I think this code is never executed because after clicking the submit button
  102. * the code does the stuff in local.inc.php and then redirects to index.php or user_portal.php depending
  103. * on api_get_setting('page_after_login')
  104. */
  105. if ($_POST["submitAuth"])
  106. {
  107. // the user is already authenticated, we now find the last login of the user.
  108. if (isset ($_user['user_id']))
  109. {
  110. $sql_last_login = "SELECT UNIX_TIMESTAMP(login_date)
  111. FROM $track_login_table
  112. WHERE login_user_id = '".$_user['user_id']."'
  113. ORDER BY login_date DESC LIMIT 1";
  114. $result_last_login = api_sql_query($sql_last_login, __FILE__, __LINE__);
  115. if (!$result_last_login)
  116. if (mysql_num_rows($result_last_login) > 0)
  117. {
  118. $user_last_login_datetime = mysql_fetch_array($result_last_login);
  119. $user_last_login_datetime = $user_last_login_datetime[0];
  120. api_session_register('user_last_login_datetime');
  121. }
  122. mysql_free_result($result_last_login);
  123. //event_login();
  124. if (api_is_platform_admin())
  125. {
  126. // decode all open event informations and fill the track_c_* tables
  127. include (api_get_path(LIBRARY_PATH)."stats.lib.inc.php");
  128. decodeOpenInfos();
  129. }
  130. }
  131. } // end login -- if($_POST["submitAuth"])
  132. else
  133. {
  134. // only if login form was not sent because if the form is sent the user was already on the page.
  135. event_open();
  136. }
  137. // the header
  138. Display :: display_header('', 'dokeos');
  139. /*
  140. ==============================================================================
  141. MAIN CODE
  142. ==============================================================================
  143. */
  144. echo '<div class="maincontent" id="content">';
  145. // Plugins for loginpage_main AND campushomepage_main
  146. if (!api_get_user_id())
  147. {
  148. api_plugin('loginpage_main');
  149. }
  150. else
  151. {
  152. api_plugin('campushomepage_main');
  153. }
  154. // Including the page for the news
  155. $page_included = false;
  156. if (!empty ($_GET['include']) && !strstr($_GET['include'], '/') && !strstr($_GET['include'], '\\') && strstr($_GET['include'], '.html'))
  157. {
  158. include ('./home/'.$_GET['include']);
  159. $page_included = true;
  160. }
  161. else
  162. {
  163. if(!empty($_SESSION['user_language_choice']))
  164. {
  165. $user_selected_language=$_SESSION['user_language_choice'];
  166. }
  167. elseif(!empty($_SESSION['_user']['language']))
  168. {
  169. $user_selected_language=$_SESSION['_user']['language'];
  170. }
  171. else
  172. {
  173. $user_selected_language=get_setting('platformLanguage');
  174. }
  175. if(!file_exists('home/home_news_'.$user_selected_language.'.html'))
  176. {
  177. $home_top_temp=file('home/home_top.html');
  178. $home_top_temp=implode('',$home_top_temp);
  179. $open=str_replace('{rel_path}',api_get_path(REL_PATH),$home_top_temp);
  180. echo $open;
  181. }
  182. else
  183. {
  184. if(file_exists('home/home_top_'.$user_selected_language.'.html'))
  185. {
  186. include('home/home_top_'.$user_selected_language.'.html');
  187. }
  188. else
  189. {
  190. include('home/home_top.html');
  191. }
  192. }
  193. }
  194. // Display System announcements
  195. $announcement = $_GET['announcement'] ? $_GET['announcement'] : -1;
  196. $announcement = intval($announcement);
  197. SystemAnnouncementManager :: display_announcements(VISIBLE_GUEST, $announcement);
  198. // Display courses and category list
  199. if (!$page_included)
  200. {
  201. if (api_get_setting('display_categories_on_homepage') == 'true')
  202. {
  203. echo '<div class="home_cats">';
  204. display_anonymous_course_list();
  205. echo '</div>';
  206. }
  207. }
  208. echo '</div>';
  209. // display right menu: language form, login section + useful weblinks
  210. echo '<div class="menu" id="menu">';
  211. display_anonymous_right_menu();
  212. echo '</div>';
  213. /*
  214. ==============================================================================
  215. FOOTER
  216. ==============================================================================
  217. */
  218. Display :: display_footer();
  219. /**
  220. * This function handles the logout and is called whenever there is a $_GET['logout']
  221. *
  222. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
  223. */
  224. function logout()
  225. {
  226. global $_configuration, $extAuthSource;
  227. // variable initialisation
  228. $query_string='';
  229. if(!empty($_SESSION['user_language_choice']))
  230. {
  231. $query_string='?language='.$_SESSION['user_language_choice'];
  232. }
  233. // Database table definition
  234. $tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
  235. // selecting the last login of the user
  236. $uid = intval($_GET['uid']);
  237. $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";
  238. $q_last_connection=mysql_query($sql_last_connection);
  239. $i_id_last_connection=mysql_result($q_last_connection,0,"login_id");
  240. $s_sql_update_logout_date="UPDATE $tbl_track_login SET logout_date=NOW() WHERE login_id='$i_id_last_connection'";
  241. api_sql_query($s_sql_update_logout_date);
  242. LoginDelete($uid, $_configuration['statistics_database']); //from inc/lib/online.inc.php - removes the "online" status
  243. //the following code enables the use of an external logout function.
  244. //example: define a $extAuthSource['ldap']['logout']="file.php" in configuration.php
  245. // then a function called ldap_logout() inside that file
  246. // (using *authent_name*_logout as the function name) and the following code
  247. // will find and execute it
  248. $uinfo = api_get_user_info($uid);
  249. if(($uinfo['auth_source'] != PLATFORM_AUTH_SOURCE) && is_array($extAuthSource))
  250. {
  251. if(is_array($extAuthSource[$uinfo['auth_source']]))
  252. {
  253. $subarray = $extAuthSource[$uinfo['auth_source']];
  254. if(!empty($subarray['logout']) && file_exists($subarray['logout']))
  255. {
  256. include_once($subarray['logout']);
  257. $logout_function = $uinfo['auth_source'].'_logout';
  258. if(function_exists($logout_function))
  259. {
  260. $logout_function($uinfo);
  261. }
  262. }
  263. }
  264. }
  265. api_session_destroy();
  266. header("Location: index.php$query_string");
  267. exit();
  268. }
  269. /**
  270. * This function checks if there are courses that are open to the world in the platform course categories (=faculties)
  271. *
  272. * @param unknown_type $category
  273. * @return boolean
  274. */
  275. function category_has_open_courses($category)
  276. {
  277. $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
  278. $sql_query = "SELECT * FROM $main_course_table WHERE category_code='$category'";
  279. $sql_result = api_sql_query($sql_query, __FILE__, __LINE__);
  280. while ($course = mysql_fetch_array($sql_result))
  281. {
  282. if ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)
  283. {
  284. return true; //at least one open course
  285. }
  286. }
  287. return false;
  288. }
  289. function display_create_course_link()
  290. {
  291. echo "<li><a href=\"main/create_course/add_course.php\">".get_lang("CourseCreate")."</a></li>";
  292. }
  293. function display_edit_course_list_links()
  294. {
  295. echo "<li><a href=\"main/auth/courses.php\">".get_lang("CourseManagement")."</a></li>";
  296. }
  297. /**
  298. * Displays the right-hand menu for anonymous users:
  299. * login form, useful links, help section
  300. * Warning: function defines globals
  301. * @version 1.0.1
  302. * @todo does $_plugins need to be global?
  303. */
  304. function display_anonymous_right_menu()
  305. {
  306. global $loginFailed, $_plugins, $_user, $menu_navigation;
  307. $platformLanguage = api_get_setting('platformLanguage');
  308. if ( !($_user['user_id']) ) // only display if the user isn't logged in
  309. {
  310. api_display_language_form();
  311. echo '<br />';
  312. display_login_form();
  313. if ($loginFailed)
  314. {
  315. handle_login_failed();
  316. }
  317. if (api_get_setting('allow_lostpassword') == 'true' OR api_get_setting('allow_registration') == 'true')
  318. {
  319. echo '<div class="menusection"><span class="menusectioncaption">'.get_lang('MenuUser').'</span><ul class="menulist">';
  320. if (get_setting('allow_registration') <> 'false')
  321. {
  322. echo '<li><a href="main/auth/inscription.php">'.get_lang('Reg').'</a></li>';
  323. }
  324. if (get_setting('allow_lostpassword') == 'true')
  325. {
  326. display_lost_password_info();
  327. }
  328. echo '</ul></div>';
  329. }
  330. if(api_number_of_plugins('loginpage_menu') > 0)
  331. {
  332. echo '<div class="note" style="background: none">';
  333. api_plugin('loginpage_menu');
  334. echo '</div>';
  335. }
  336. }
  337. /*** hide right menu "general" and other parts on anonymous right menu *****/
  338. echo "<div class=\"menusection\">", "<span class=\"menusectioncaption\">".get_lang("MenuGeneral")."</span>";
  339. echo "<ul class=\"menulist\">";
  340. $user_selected_language = api_get_interface_language();
  341. if (!isset ($user_selected_language))
  342. $user_selected_language = $platformLanguage;
  343. if(!file_exists('home/home_menu_'.$user_selected_language.'.html'))
  344. {
  345. include ('home/home_menu.html');
  346. }
  347. else
  348. {
  349. include('home/home_menu_'.$user_selected_language.'.html');
  350. }
  351. echo '</ul>';
  352. echo '</div>';
  353. if ($_user['user_id'] && api_number_of_plugins('campushomepage_menu') > 0)
  354. {
  355. echo '<div class="note" style="background: none">';
  356. api_plugin('campushomepage_menu');
  357. echo '</div>';
  358. }
  359. /**
  360. * User section
  361. */
  362. if(isset($_SESSION['_user']['user_id']) && $_SESSION['_user']['user_id']!=0)
  363. {
  364. // tabs that are deactivated are added here
  365. if (!empty($menu_navigation))
  366. {
  367. echo "<div class=\"menusection\">";
  368. echo "<span class=\"menusectioncaption\">".get_lang("MainNavigation")."</span>";
  369. echo "<ul class=\"menulist\">";
  370. foreach($menu_navigation as $section => $navigation_info)
  371. {
  372. $current = ($section == $GLOBALS['this_section'] ? ' id="current"' : '');
  373. echo '<li'.$current.'>';
  374. echo '<a href="'.$navigation_info['url'].'" target="_top">'.$navigation_info['title'].'</a>';
  375. echo '</li>';
  376. echo "\n";
  377. }
  378. echo "</ul>";
  379. echo '</div>';
  380. }
  381. echo "<div class=\"menusection\">";
  382. echo "<span class=\"menusectioncaption\">".get_lang("MenuUser")."</span>";
  383. echo "<ul class=\"menulist\">";
  384. $display_add_course_link = api_is_allowed_to_create_course() && ($_SESSION["studentview"] != "studentenview");
  385. if ($display_add_course_link)
  386. display_create_course_link();
  387. display_edit_course_list_links();
  388. echo "</ul>";
  389. echo "</div>";
  390. }
  391. // includes for any files to be displayed below anonymous right menu
  392. if(!file_exists('home/home_notice_'.$user_selected_language.'.html') && file_get_contents('home/home_notice.html')!='')
  393. {
  394. echo '<div class="note">';
  395. include ('home/home_notice.html');
  396. echo '</div>';
  397. }
  398. elseif(file_exists('home/home_notice_'.$user_selected_language.'.html') && file_get_contents('home/home_notice_'.$user_selected_language.'.html')!='')
  399. {
  400. echo '<div class="note">';
  401. include('home/home_notice_'.$user_selected_language.'.html');
  402. echo '</div>';
  403. }
  404. }
  405. /**
  406. * Reacts on a failed login:
  407. * displays an explanation with
  408. * a link to the registration form.
  409. *
  410. * @version 1.0.1
  411. */
  412. function handle_login_failed()
  413. {
  414. switch ($_GET['error'])
  415. {
  416. case '':
  417. $message = get_lang("InvalidId");
  418. if (api_is_self_registration_allowed())
  419. {
  420. $message = get_lang("InvalidForSelfRegistration");
  421. }
  422. break;
  423. case 'account_expired':
  424. $message=get_lang('AccountExpired');
  425. break;
  426. case 'account_inactive':
  427. $message=get_lang('AccountInactive');
  428. break;
  429. case 'user_password_incorrect':
  430. $message=get_lang('InvalidId');
  431. break;
  432. }
  433. echo "<div id=\"login_fail\">".$message."</div>";
  434. }
  435. /**
  436. * Adds a form to let users login
  437. * @version 1.1
  438. */
  439. function display_login_form()
  440. {
  441. $form = new FormValidator('formLogin');
  442. $form->addElement('text','login',get_lang('UserName'),array('size'=>15));
  443. $form->addElement('password','password',get_lang('Pass'),array('size'=>15));
  444. $form->addElement('submit','submitAuth',get_lang('Ok'));
  445. $renderer =& $form->defaultRenderer();
  446. $renderer->setElementTemplate('<div><label>{label}</label></div><div>{element}</div>');
  447. $form->display();
  448. }
  449. /**
  450. * Displays a link to the lost password section
  451. */
  452. function display_lost_password_info()
  453. {
  454. echo "<li><a href=\"main/auth/lostPassword.php\">".get_lang("LostPassword")."</a></li>";
  455. }
  456. /**
  457. * Display list of courses in a category.
  458. * (for anonymous users)
  459. *
  460. * @version 1.1
  461. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University - refactoring and code cleaning
  462. */
  463. function display_anonymous_course_list()
  464. {
  465. //init
  466. $web_course_path = api_get_path(WEB_COURSE_PATH);
  467. $category = $_GET["category"];
  468. // Database table definitions
  469. $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
  470. $main_category_table = Database :: get_main_table(TABLE_MAIN_CATEGORY);
  471. $platformLanguage = api_get_setting('platformLanguage');
  472. //get list of courses in category $category
  473. $sql_get_course_list = "SELECT * FROM $main_course_table cours
  474. WHERE category_code = '".mysql_real_escape_string($_GET["category"])."'
  475. ORDER BY UPPER(visual_code)";
  476. //removed: AND cours.visibility='".COURSE_VISIBILITY_OPEN_WORLD."'
  477. $sql_result_courses = api_sql_query($sql_get_course_list, __FILE__, __LINE__);
  478. while ($course_result = mysql_fetch_array($sql_result_courses))
  479. {
  480. $course_list[] = $course_result;
  481. }
  482. $sqlGetSubCatList = "
  483. SELECT t1.name,t1.code,t1.parent_id,t1.children_count,COUNT(DISTINCT t3.code) AS nbCourse
  484. FROM $main_category_table t1
  485. LEFT JOIN $main_category_table t2 ON t1.code=t2.parent_id
  486. LEFT JOIN $main_course_table t3 ON (t3.category_code=t1.code AND t3.visibility='".COURSE_VISIBILITY_OPEN_WORLD."')
  487. WHERE t1.parent_id ". (empty ($category) ? "IS NULL" : "='$category'")."
  488. GROUP BY t1.name,t1.code,t1.parent_id,t1.children_count ORDER BY t1.tree_pos";
  489. $resCats = api_sql_query($sqlGetSubCatList, __FILE__, __LINE__);
  490. $thereIsSubCat = false;
  491. if (mysql_num_rows($resCats) > 0)
  492. {
  493. $htmlListCat = "<h4 style=\"margin-top: 0px;\">".get_lang("CatList")."</h4>"."<ul>";
  494. while ($catLine = mysql_fetch_array($resCats))
  495. {
  496. if ($catLine['code'] != $category)
  497. {
  498. $category_has_open_courses = category_has_open_courses($catLine['code']);
  499. if ($category_has_open_courses)
  500. {
  501. //the category contains courses accessible to anonymous visitors
  502. $htmlListCat .= "<li>";
  503. $htmlListCat .= "<a href=\"".api_get_self()."?category=".$catLine['code']."\">".$catLine['name']."</a>";
  504. if (api_get_setting('show_number_of_courses') == 'true')
  505. {
  506. $htmlListCat .= " (".$catLine['nbCourse']." ".get_lang("Courses").")";
  507. }
  508. $htmlListCat .= "</li>\n";
  509. $thereIsSubCat = true;
  510. }
  511. elseif ($catLine['children_count'] > 0)
  512. {
  513. //the category has children, subcategories
  514. $htmlListCat .= "<li>";
  515. $htmlListCat .= "<a href=\"".api_get_self()."?category=".$catLine['code']."\">".$catLine['name']."</a>";
  516. $htmlListCat .= "</li>\n";
  517. $thereIsSubCat = true;
  518. }
  519. /************************************************************************
  520. end changed code to eliminate the (0 courses) after empty categories
  521. ************************************************************************/
  522. elseif (api_get_setting('show_empty_course_categories') == 'true')
  523. {
  524. $htmlListCat .= "<li>";
  525. $htmlListCat .= $catLine['name'];
  526. $htmlListCat .= "</li>\n";
  527. $thereIsSubCat = true;
  528. }//else don't set thereIsSubCat to true to avoid printing things if not requested
  529. }
  530. else
  531. {
  532. $htmlTitre = "<p>";
  533. if (api_get_setting('show_back_link_on_top_of_tree') == 'true')
  534. {
  535. $htmlTitre .= "<a href=\"".api_get_self()."\">"."&lt;&lt; ".get_lang("BackToHomePage")."</a>";
  536. }
  537. if (!is_null($catLine['parent_id']) || (api_get_setting('show_back_link_on_top_of_tree') <> 'true' && !is_null($catLine['code'])))
  538. {
  539. $htmlTitre .= "<a href=\"".api_get_self()."?category=".$catLine['parent_id']."\">"."&lt;&lt; ".get_lang("Up")."</a>";
  540. }
  541. $htmlTitre .= "</p>\n";
  542. if ($category != "" && !is_null($catLine['code']))
  543. {
  544. $htmlTitre .= "<h3>".$catLine['name']."</h3>\n";
  545. }
  546. else
  547. {
  548. $htmlTitre .= "<h3>".get_lang("Categories")."</h3>\n";
  549. }
  550. }
  551. }
  552. $htmlListCat .= "</ul>\n";
  553. }
  554. echo $htmlTitre;
  555. if ($thereIsSubCat)
  556. {
  557. echo $htmlListCat;
  558. }
  559. while ($categoryName = mysql_fetch_array($resCats))
  560. {
  561. echo "<h3>", $categoryName['name'], "</h3>\n";
  562. }
  563. $numrows = mysql_num_rows($sql_result_courses);
  564. $courses_list_string = '';
  565. $courses_shown = 0;
  566. if ($numrows > 0)
  567. {
  568. if ($thereIsSubCat)
  569. {
  570. $courses_list_string .= "<hr size=\"1\" noshade=\"noshade\">\n";
  571. }
  572. $courses_list_string .= "<h4 style=\"margin-top: 0px;\">".get_lang("CourseList")."</h4>\n"."<ul>\n";
  573. foreach ($course_list AS $course)
  574. {
  575. if($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD){
  576. $courses_shown++;
  577. $courses_list_string .= "<li>\n";
  578. $courses_list_string .= "<a href=\"".$web_course_path.$course['directory']."/\">".$course['title']."</a>";
  579. $courses_list_string .= "<br/>".$course['visual_code']." - ".$course['tutor_name'];
  580. if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] <> api_get_setting('platformLanguage'))
  581. {
  582. $courses_list_string .= ' - '.$course['course_language'];
  583. }
  584. $courses_list_string .= "</li>\n";
  585. }
  586. }
  587. $courses_list_string .= "</ul>\n";
  588. }
  589. else
  590. {
  591. // echo "<blockquote>",get_lang('_No_course_publicly_available'),"</blockquote>\n";
  592. }
  593. if($courses_shown > 0)
  594. { //only display the list of courses and categories if there was more than
  595. // 0 courses visible to the world (we're in the anonymous list here)
  596. echo $courses_list_string;
  597. }
  598. if ($category != "")
  599. {
  600. echo "<p>", "<a href=\"".api_get_self()."\"><b>&lt;&lt;</b> ", get_lang("BackToHomePage"), "</a>", "</p>\n";
  601. }
  602. }
  603. ?>