index.php 20 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 12813 2007-07-31 08:16:06Z elixir_julian $
  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. $user_selected_language=$_SESSION['user_language_choice'];
  165. }
  166. elseif(!empty($_SESSION['_user']['language'])){
  167. $user_selected_language=$_SESSION['_user']['language'];
  168. }
  169. else{
  170. $user_selected_language=get_setting('platformLanguage');
  171. }
  172. if(!file_exists('home/home_news_'.$user_selected_language.'.html'))
  173. {
  174. $home_top_temp=file('home/home_top.html');
  175. $home_top_temp=implode('',$home_top_temp);
  176. $open=str_replace('{rel_path}',api_get_path(REL_PATH),$home_top_temp);
  177. echo $open;
  178. }
  179. else
  180. {
  181. if(file_exists('home/home_top_'.$user_selected_language.'.html')){
  182. include('home/home_top_'.$user_selected_language.'.html');
  183. }
  184. else{
  185. include('home/home_top.html');
  186. }
  187. }
  188. }
  189. // Display System announcements
  190. $announcement = $_GET['announcement'] ? $_GET['announcement'] : -1;
  191. $announcement = intval($announcement);
  192. SystemAnnouncementManager :: display_announcements(VISIBLE_GUEST, $announcement);
  193. // Display courses and category list
  194. if (!$page_included)
  195. {
  196. if (api_get_setting('display_categories_on_homepage') == 'true')
  197. {
  198. echo '<div class="home_cats">';
  199. display_anonymous_course_list();
  200. echo '</div>';
  201. }
  202. }
  203. echo '</div>';
  204. // display right menu: language form, login section + useful weblinks
  205. echo '<div class="menu" id="menu">';
  206. display_anonymous_right_menu();
  207. echo '</div>';
  208. /*
  209. ==============================================================================
  210. FOOTER
  211. ==============================================================================
  212. */
  213. Display :: display_footer();
  214. /**
  215. * This function handles the logout and is called whenever there is a $_GET['logout']
  216. *
  217. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
  218. */
  219. function logout()
  220. {
  221. // variable initialisation
  222. $query_string='';
  223. if(!empty($_SESSION['user_language_choice']))
  224. {
  225. $query_string='?language='.$_SESSION['user_language_choice'];
  226. }
  227. // Database table definition
  228. $tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
  229. // selecting the last login of the user
  230. $uid = intval($_GET['uid']);
  231. $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";
  232. $q_last_connection=mysql_query($sql_last_connection);
  233. $i_id_last_connection=mysql_result($q_last_connection,0,"login_id");
  234. $s_sql_update_logout_date="UPDATE $tbl_track_login SET logout_date=NOW() WHERE login_id='$i_id_last_connection'";
  235. api_sql_query($s_sql_update_logout_date);
  236. LoginDelete($uid, $_configuration['statistics_database']);
  237. api_session_destroy();
  238. header("Location: index.php$query_string");
  239. exit();
  240. }
  241. /**
  242. * This function checks if there are courses that are open to the world in the platform course categories (=faculties)
  243. *
  244. * @param unknown_type $category
  245. * @return boolean
  246. */
  247. function category_has_open_courses($category)
  248. {
  249. $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
  250. $sql_query = "SELECT * FROM $main_course_table WHERE category_code='$category'";
  251. $sql_result = api_sql_query($sql_query, __FILE__, __LINE__);
  252. while ($course = mysql_fetch_array($sql_result))
  253. {
  254. if ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)
  255. {
  256. return true; //at least one open course
  257. }
  258. }
  259. return false;
  260. }
  261. function display_create_course_link()
  262. {
  263. echo "<li><a href=\"main/create_course/add_course.php\">".get_lang("CourseCreate")."</a></li>";
  264. }
  265. function display_edit_course_list_links()
  266. {
  267. echo "<li><a href=\"main/auth/courses.php\">".get_lang("CourseManagement")."</a></li>";
  268. }
  269. /**
  270. * Displays the right-hand menu for anonymous users:
  271. * login form, useful links, help section
  272. * Warning: function defines globals
  273. * @version 1.0.1
  274. * @todo does $_plugins need to be global?
  275. */
  276. function display_anonymous_right_menu()
  277. {
  278. global $loginFailed, $_plugins, $_user;
  279. $platformLanguage = api_get_setting('platformLanguage');
  280. if ( !($_user['user_id']) ) // only display if the user isn't logged in
  281. {
  282. api_display_language_form();
  283. echo '<br />';
  284. display_login_form();
  285. if ($loginFailed)
  286. {
  287. handle_login_failed();
  288. }
  289. if (api_get_setting('allow_lostpassword') == 'true' OR api_get_setting('allow_registration') == 'true')
  290. {
  291. echo '<div class="menusection"><span class="menusectioncaption">'.get_lang('MenuUser').'</span><ul class="menulist">';
  292. if (get_setting('allow_registration') <> 'false')
  293. {
  294. echo '<li><a href="main/auth/inscription.php">'.get_lang('Reg').'</a></li>';
  295. }
  296. if (get_setting('allow_lostpassword') == 'true')
  297. {
  298. display_lost_password_info();
  299. }
  300. echo '</ul></div>';
  301. }
  302. if(api_number_of_plugins('loginpage_menu') > 0)
  303. {
  304. echo '<div class="note" style="background: none">';
  305. api_plugin('loginpage_menu');
  306. echo '</div>';
  307. }
  308. }
  309. /*** hide right menu "general" and other parts on anonymous right menu *****/
  310. echo "<div class=\"menusection\">", "<span class=\"menusectioncaption\">".get_lang("MenuGeneral")."</span>";
  311. echo "<ul class=\"menulist\">";
  312. $user_selected_language = api_get_interface_language();
  313. if (!isset ($user_selected_language))
  314. $user_selected_language = $platformLanguage;
  315. if(!file_exists('home/home_menu_'.$user_selected_language.'.html'))
  316. {
  317. include ('home/home_menu.html');
  318. }
  319. else
  320. {
  321. include('home/home_menu_'.$user_selected_language.'.html');
  322. }
  323. echo '</ul>';
  324. echo '</div>';
  325. if ($_user['user_id'] && api_number_of_plugins('campushomepage_menu') > 0)
  326. {
  327. echo '<div class="note" style="background: none">';
  328. api_plugin('campushomepage_menu');
  329. echo '</div>';
  330. }
  331. /**
  332. * User section
  333. */
  334. if(isset($_SESSION['_user']['user_id']) && $_SESSION['_user']['user_id']!=0){
  335. echo "<div class=\"menusection\">";
  336. echo "<span class=\"menusectioncaption\">".get_lang("MenuUser")."</span>";
  337. echo "<ul class=\"menulist\">";
  338. $display_add_course_link = api_is_allowed_to_create_course() && ($_SESSION["studentview"] != "studentenview");
  339. if ($display_add_course_link)
  340. display_create_course_link();
  341. display_edit_course_list_links();
  342. $navigation=array();
  343. // Link to my profile
  344. $navigation['myprofile']['url'] = api_get_path(WEB_CODE_PATH).'auth/profile.php'.(!empty($_course['path']) ? '?coursePath='.$_course['path'].'&amp;courseCode='.$_course['official_code'] : '' );
  345. $navigation['myprofile']['title'] = get_lang('ModifyProfile');
  346. // Link to my agenda
  347. $navigation['myagenda']['url'] = api_get_path(WEB_CODE_PATH).'calendar/myagenda.php'.(!empty($_course['path']) ? '?coursePath='.$_course['path'].'&amp;courseCode='.$_course['official_code'] : '' );
  348. $navigation['myagenda']['title'] = get_lang('MyAgenda');
  349. foreach($navigation as $section => $navigation_info)
  350. {
  351. $current = ($section == $GLOBALS['this_section'] ? ' id="current"' : '');
  352. echo '<li'.$current.'>';
  353. echo '<a href="'.$navigation_info['url'].'" target="_top">'.$navigation_info['title'].'</a>';
  354. echo '</li>';
  355. echo "\n";
  356. }
  357. echo "</ul>";
  358. echo "</div>";
  359. }
  360. /**** use this comment to hide notice file section from right menu ****
  361. echo '<div class="note">';
  362. // includes for any files to be displayed below anonymous right menu
  363. if(!file_exists('home/home_notice_'.$user_selected_language.'.html'))
  364. {
  365. include ('home/home_notice.html');
  366. }
  367. else
  368. {
  369. include('home/home_notice_'.$user_selected_language.'.html');
  370. }
  371. echo '</div>';
  372. **** end of hide various right menu items on anonymous right menu ****/
  373. }
  374. /**
  375. * Reacts on a failed login:
  376. * displays an explanation with
  377. * a link to the registration form.
  378. *
  379. * @version 1.0.1
  380. */
  381. function handle_login_failed()
  382. {
  383. switch ($_GET['error'])
  384. {
  385. case '':
  386. $message = get_lang("InvalidId");
  387. if (api_is_self_registration_allowed())
  388. {
  389. $message = get_lang("InvalidForSelfRegistration");
  390. }
  391. break;
  392. case 'account_expired':
  393. $message=get_lang('AccountExpired');
  394. break;
  395. case 'account_inactive':
  396. $message=get_lang('AccountInactive');
  397. break;
  398. case 'user_password_incorrect':
  399. $message=get_lang('InvalidId');
  400. break;
  401. }
  402. echo "<div id=\"login_fail\">".$message."</div>";
  403. }
  404. /**
  405. * Adds a form to let users login
  406. * @version 1.1
  407. */
  408. function display_login_form()
  409. {
  410. $form = new FormValidator('formLogin');
  411. $form->addElement('text','login',get_lang('UserName'),array('size'=>15));
  412. $form->addElement('password','password',get_lang('Pass'),array('size'=>15));
  413. $form->addElement('submit','submitAuth',get_lang('Ok'));
  414. $renderer =& $form->defaultRenderer();
  415. $renderer->setElementTemplate('<div><label>{label}</label></div><div>{element}</div>');
  416. $form->display();
  417. }
  418. /**
  419. * Displays a link to the lost password section
  420. */
  421. function display_lost_password_info()
  422. {
  423. echo "<li><a href=\"main/auth/lostPassword.php\">".get_lang("LostPassword")."</a></li>";
  424. }
  425. /**
  426. * Display list of courses in a category.
  427. * (for anonymous users)
  428. *
  429. * @version 1.1
  430. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University - refactoring and code cleaning
  431. */
  432. function display_anonymous_course_list()
  433. {
  434. //init
  435. $web_course_path = api_get_path(WEB_COURSE_PATH);
  436. $category = $_GET["category"];
  437. // Database table definitions
  438. $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
  439. $main_category_table = Database :: get_main_table(TABLE_MAIN_CATEGORY);
  440. $platformLanguage = api_get_setting('platformLanguage');
  441. //get list of courses in category $category
  442. $sql_get_course_list = "SELECT * FROM $main_course_table cours
  443. WHERE category_code = '".mysql_real_escape_string($_GET["category"])."'
  444. ORDER BY UPPER(visual_code)";
  445. //removed: AND cours.visibility='".COURSE_VISIBILITY_OPEN_WORLD."'
  446. $sql_result_courses = api_sql_query($sql_get_course_list, __FILE__, __LINE__);
  447. while ($course_result = mysql_fetch_array($sql_result_courses))
  448. {
  449. $course_list[] = $course_result;
  450. }
  451. $sqlGetSubCatList = "
  452. SELECT t1.name,t1.code,t1.parent_id,t1.children_count,COUNT(DISTINCT t3.code) AS nbCourse
  453. FROM $main_category_table t1
  454. LEFT JOIN $main_category_table t2 ON t1.code=t2.parent_id
  455. LEFT JOIN $main_course_table t3 ON (t3.category_code=t1.code AND t3.visibility='".COURSE_VISIBILITY_OPEN_WORLD."')
  456. WHERE t1.parent_id ". (empty ($category) ? "IS NULL" : "='$category'")."
  457. GROUP BY t1.name,t1.code,t1.parent_id,t1.children_count ORDER BY t1.tree_pos";
  458. $resCats = api_sql_query($sqlGetSubCatList, __FILE__, __LINE__);
  459. $thereIsSubCat = false;
  460. if (mysql_num_rows($resCats) > 0)
  461. {
  462. $htmlListCat = "<h4 style=\"margin-top: 0px;\">".get_lang("CatList")."</h4>"."<ul>";
  463. while ($catLine = mysql_fetch_array($resCats))
  464. {
  465. if ($catLine['code'] != $category)
  466. {
  467. $category_has_open_courses = category_has_open_courses($catLine['code']);
  468. if ($category_has_open_courses)
  469. {
  470. //the category contains courses accessible to anonymous visitors
  471. $htmlListCat .= "<li>";
  472. $htmlListCat .= "<a href=\"".api_get_self()."?category=".$catLine['code']."\">".$catLine['name']."</a>";
  473. if (api_get_setting('show_number_of_courses') == 'true')
  474. {
  475. $htmlListCat .= " (".$catLine['nbCourse']." ".get_lang("Courses").")";
  476. }
  477. $htmlListCat .= "</li>\n";
  478. $thereIsSubCat = true;
  479. }
  480. elseif ($catLine['children_count'] > 0)
  481. {
  482. //the category has children, subcategories
  483. $htmlListCat .= "<li>";
  484. $htmlListCat .= "<a href=\"".api_get_self()."?category=".$catLine['code']."\">".$catLine['name']."</a>";
  485. $htmlListCat .= "</li>\n";
  486. $thereIsSubCat = true;
  487. }
  488. /************************************************************************
  489. end changed code to eliminate the (0 courses) after empty categories
  490. ************************************************************************/
  491. elseif (api_get_setting('show_empty_course_categories') == 'true')
  492. {
  493. $htmlListCat .= "<li>";
  494. $htmlListCat .= $catLine['name'];
  495. $htmlListCat .= "</li>\n";
  496. $thereIsSubCat = true;
  497. }//else don't set thereIsSubCat to true to avoid printing things if not requested
  498. }
  499. else
  500. {
  501. $htmlTitre = "<p>";
  502. if (api_get_setting('show_back_link_on_top_of_tree') == 'true')
  503. {
  504. $htmlTitre .= "<a href=\"".api_get_self()."\">"."&lt;&lt; ".get_lang("BackToHomePage")."</a>";
  505. }
  506. if (!is_null($catLine['parent_id']) || (api_get_setting('show_back_link_on_top_of_tree') <> 'true' && !is_null($catLine['code'])))
  507. {
  508. $htmlTitre .= "<a href=\"".api_get_self()."?category=".$catLine['parent_id']."\">"."&lt;&lt; ".get_lang("Up")."</a>";
  509. }
  510. $htmlTitre .= "</p>\n";
  511. if ($category != "" && !is_null($catLine['code']))
  512. {
  513. $htmlTitre .= "<h3>".$catLine['name']."</h3>\n";
  514. }
  515. else
  516. {
  517. $htmlTitre .= "<h3>".get_lang("Categories")."</h3>\n";
  518. }
  519. }
  520. }
  521. $htmlListCat .= "</ul>\n";
  522. }
  523. echo $htmlTitre;
  524. if ($thereIsSubCat)
  525. {
  526. echo $htmlListCat;
  527. }
  528. while ($categoryName = mysql_fetch_array($resCats))
  529. {
  530. echo "<h3>", $categoryName['name'], "</h3>\n";
  531. }
  532. $numrows = mysql_num_rows($sql_result_courses);
  533. $courses_list_string = '';
  534. $courses_shown = 0;
  535. if ($numrows > 0)
  536. {
  537. if ($thereIsSubCat)
  538. {
  539. $courses_list_string .= "<hr size=\"1\" noshade=\"noshade\">\n";
  540. }
  541. $courses_list_string .= "<h4 style=\"margin-top: 0px;\">".get_lang("CourseList")."</h4>\n"."<ul>\n";
  542. foreach ($course_list AS $course)
  543. {
  544. if($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD){
  545. $courses_shown++;
  546. $courses_list_string .= "<li>\n";
  547. $courses_list_string .= "<a href=\"".$web_course_path.$course['directory']."/\">".$course['title']."</a>";
  548. $courses_list_string .= "<br/>".$course['visual_code']." - ".$course['tutor_name'];
  549. if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] <> api_get_setting('platformLanguage'))
  550. {
  551. $courses_list_string .= ' - '.$course['course_language'];
  552. }
  553. $courses_list_string .= "</li>\n";
  554. }
  555. }
  556. $courses_list_string .= "</ul>\n";
  557. }
  558. else
  559. {
  560. // echo "<blockquote>",get_lang('_No_course_publicly_available'),"</blockquote>\n";
  561. }
  562. if($courses_shown > 0)
  563. { //only display the list of courses and categories if there was more than
  564. // 0 courses visible to the world (we're in the anonymous list here)
  565. echo $courses_list_string;
  566. }
  567. if ($category != "")
  568. {
  569. echo "<p>", "<a href=\"".api_get_self()."\"><b>&lt;&lt;</b> ", get_lang("BackToHomePage"), "</a>", "</p>\n";
  570. }
  571. }
  572. ?>