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 12565 2007-06-07 13:52:17Z 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. /** defines weither empty course categories should appear in the list with the course categories */
  79. $_setting['show_empty_course_categories'] = 'true';
  80. /** defines weither the number of open courses has to appear after the course category (faculty) */
  81. /** remark: actually count are only for direct children */
  82. $_setting['show_number_of_courses'] = 'false';
  83. /** Show the back link on top of the tree */
  84. $_setting['show_back_link_on_top_of_tree'] = 'false';
  85. /** Show the course language if it is not the same as the platform lanugage */
  86. $_setting['show_different_course_language'] = 'true';
  87. /** @todo remove this piece of code because this is not used */
  88. if (isset ($_user['user_id']))
  89. {
  90. $nameTools = api_get_setting('siteName');
  91. }
  92. /*
  93. ==============================================================================
  94. LOGIN
  95. ==============================================================================
  96. */
  97. /**
  98. * @todo This piece of code should probably move to local.inc.php where the actual login / logout procedure is handled.
  99. * @todo consider removing this piece of code because does nothing.
  100. */
  101. if ($_GET["submitAuth"] == 1)
  102. {
  103. // nice lie!!!
  104. echo "Attempted breakin - sysadmins notified.";
  105. session_destroy();
  106. die();
  107. }
  108. /**
  109. * @todo This piece of code should probably move to local.inc.php where the actual login procedure is handled.
  110. * @todo check if this code is used. I think this code is never executed because after clicking the submit button
  111. * the code does the stuff in local.inc.php and then redirects to index.php or user_portal.php depending
  112. * on api_get_setting('page_after_login')
  113. */
  114. if ($_POST["submitAuth"])
  115. {
  116. // the user is already authenticated, we now find the last login of the user.
  117. if (isset ($_user['user_id']))
  118. {
  119. $sql_last_login = "SELECT UNIX_TIMESTAMP(login_date)
  120. FROM $track_login_table
  121. WHERE login_user_id = '".$_user['user_id']."'
  122. ORDER BY login_date DESC LIMIT 1";
  123. $result_last_login = api_sql_query($sql_last_login, __FILE__, __LINE__);
  124. if (!$result_last_login)
  125. if (mysql_num_rows($result_last_login) > 0)
  126. {
  127. $user_last_login_datetime = mysql_fetch_array($result_last_login);
  128. $user_last_login_datetime = $user_last_login_datetime[0];
  129. api_session_register('user_last_login_datetime');
  130. }
  131. mysql_free_result($result_last_login);
  132. //event_login();
  133. if (api_is_platform_admin())
  134. {
  135. // decode all open event informations and fill the track_c_* tables
  136. include (api_get_path(LIBRARY_PATH)."stats.lib.inc.php");
  137. decodeOpenInfos();
  138. }
  139. }
  140. } // end login -- if($_POST["submitAuth"])
  141. else
  142. {
  143. // only if login form was not sent because if the form is sent the user was already on the page.
  144. event_open();
  145. }
  146. // the header
  147. Display :: display_header('', 'dokeos');
  148. /*
  149. ==============================================================================
  150. MAIN CODE
  151. ==============================================================================
  152. */
  153. echo '<div class="maincontent" id="content">';
  154. // Plugins for loginpage_main AND campushomepage_main
  155. if (!api_get_user_id())
  156. {
  157. api_plugin('loginpage_main');
  158. }
  159. else
  160. {
  161. api_plugin('campushomepage_main');
  162. }
  163. // Including the page for the news
  164. $page_included = false;
  165. if (!empty ($_GET['include']) && !strstr($_GET['include'], '/') && !strstr($_GET['include'], '\\') && strstr($_GET['include'], '.html'))
  166. {
  167. include ('./home/'.$_GET['include']);
  168. $page_included = true;
  169. }
  170. else
  171. {
  172. if(!empty($_SESSION['user_language_choice'])){
  173. $user_selected_language=$_SESSION['user_language_choice'];
  174. }
  175. elseif(!empty($_SESSION['_user']['language'])){
  176. $user_selected_language=$_SESSION['_user']['language'];
  177. }
  178. else{
  179. $user_selected_language=get_setting('platformLanguage');
  180. }
  181. if(!file_exists('home/home_news_'.$user_selected_language.'.html'))
  182. {
  183. $home_top_temp=file('home/home_top.html');
  184. $home_top_temp=implode('',$home_top_temp);
  185. $open=str_replace('{rel_path}',api_get_path(REL_PATH),$home_top_temp);
  186. echo $open;
  187. }
  188. else
  189. {
  190. if(file_exists('home/home_top_'.$user_selected_language.'.html')){
  191. include('home/home_top_'.$user_selected_language.'.html');
  192. }
  193. else{
  194. include('home/home_top.html');
  195. }
  196. }
  197. }
  198. // Display System announcements
  199. $announcement = $_GET['announcement'] ? $_GET['announcement'] : -1;
  200. $announcement = intval($announcement);
  201. SystemAnnouncementManager :: display_announcements(VISIBLE_GUEST, $announcement);
  202. // Display courses and category list
  203. if (!$page_included)
  204. {
  205. if (api_get_setting('display_courses_to_anonymous_users') == 'true')
  206. {
  207. echo '<div class="home_cats">';
  208. display_anonymous_course_list();
  209. echo '</div>';
  210. }
  211. }
  212. echo '</div>';
  213. // display right menu: language form, login section + useful weblinks
  214. echo '<div class="menu" id="menu">';
  215. display_anonymous_right_menu();
  216. echo '</div>';
  217. /*
  218. ==============================================================================
  219. FOOTER
  220. ==============================================================================
  221. */
  222. Display :: display_footer();
  223. /**
  224. * This function handles the logout and is called whenever there is a $_GET['logout']
  225. *
  226. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
  227. */
  228. function logout()
  229. {
  230. // variable initialisation
  231. $query_string='';
  232. if(!empty($_SESSION['user_language_choice']))
  233. {
  234. $query_string='?language='.$_SESSION['user_language_choice'];
  235. }
  236. // Database table definition
  237. $tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
  238. // selecting the last login of the user
  239. $uid = intval($_GET['uid']);
  240. $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";
  241. $q_last_connection=mysql_query($sql_last_connection);
  242. $i_id_last_connection=mysql_result($q_last_connection,0,"login_id");
  243. $s_sql_update_logout_date="UPDATE $tbl_track_login SET logout_date=NOW() WHERE login_id='$i_id_last_connection'";
  244. api_sql_query($s_sql_update_logout_date);
  245. LoginDelete($uid, $_configuration['statistics_database']);
  246. api_session_destroy();
  247. header("Location: index.php$query_string");
  248. exit();
  249. }
  250. /**
  251. * This function checks if there are courses that are open to the world in the platform course categories (=faculties)
  252. *
  253. * @param unknown_type $category
  254. * @return boolean
  255. */
  256. function category_has_open_courses($category)
  257. {
  258. $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
  259. $sql_query = "SELECT * FROM $main_course_table WHERE category_code='$category'";
  260. $sql_result = api_sql_query($sql_query, __FILE__, __LINE__);
  261. while ($course = mysql_fetch_array($sql_result))
  262. {
  263. if ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)
  264. {
  265. return true; //at least one open course
  266. }
  267. }
  268. return false;
  269. }
  270. function display_create_course_link()
  271. {
  272. echo "<li><a href=\"main/create_course/add_course.php\">".get_lang("CourseCreate")."</a></li>";
  273. }
  274. function display_edit_course_list_links()
  275. {
  276. echo "<li><a href=\"main/auth/courses.php\">".get_lang("CourseManagement")."</a></li>";
  277. }
  278. /**
  279. * Displays the right-hand menu for anonymous users:
  280. * login form, useful links, help section
  281. * Warning: function defines globals
  282. * @version 1.0.1
  283. * @todo does $_plugins need to be global?
  284. */
  285. function display_anonymous_right_menu()
  286. {
  287. global $loginFailed, $_plugins, $_user;
  288. $platformLanguage = api_get_setting('platformLanguage');
  289. if ( !($_user['user_id']) ) // only display if the user isn't logged in
  290. {
  291. api_display_language_form();
  292. echo '<br />';
  293. display_login_form();
  294. if ($loginFailed)
  295. {
  296. handle_login_failed();
  297. }
  298. if (api_get_setting('allow_lostpassword') == 'true' OR api_get_setting('allow_registration') == 'true')
  299. {
  300. echo '<div class="menusection"><span class="menusectioncaption">'.get_lang('MenuUser').'</span><ul class="menulist">';
  301. if (get_setting('allow_registration') <> 'false')
  302. {
  303. echo '<li><a href="main/auth/inscription.php">'.get_lang('Reg').'</a></li>';
  304. }
  305. if (get_setting('allow_lostpassword') == 'true')
  306. {
  307. display_lost_password_info();
  308. }
  309. echo '</ul></div>';
  310. }
  311. if(api_number_of_plugins('loginpage_menu') > 0)
  312. {
  313. echo '<div class="note" style="background: none">';
  314. api_plugin('loginpage_menu');
  315. echo '</div>';
  316. }
  317. }
  318. /*** hide right menu "general" and other parts on anonymous right menu *****/
  319. echo "<div class=\"menusection\">", "<span class=\"menusectioncaption\">".get_lang("MenuGeneral")."</span>";
  320. echo "<ul class=\"menulist\">";
  321. $user_selected_language = api_get_interface_language();
  322. if (!isset ($user_selected_language))
  323. $user_selected_language = $platformLanguage;
  324. if(!file_exists('home/home_menu_'.$user_selected_language.'.html'))
  325. {
  326. include ('home/home_menu.html');
  327. }
  328. else
  329. {
  330. include('home/home_menu_'.$user_selected_language.'.html');
  331. }
  332. echo '</ul>';
  333. echo '</div>';
  334. if ($_user['user_id'] && api_number_of_plugins('campushomepage_menu') > 0)
  335. {
  336. echo '<div class="note" style="background: none">';
  337. api_plugin('campushomepage_menu');
  338. echo '</div>';
  339. }
  340. /**
  341. * User section
  342. */
  343. if(isset($_SESSION['_user']['user_id']) && $_SESSION['_user']['user_id']!=0){
  344. echo "<div class=\"menusection\">";
  345. echo "<span class=\"menusectioncaption\">".get_lang("MenuUser")."</span>";
  346. echo "<ul class=\"menulist\">";
  347. $display_add_course_link = api_is_allowed_to_create_course() && ($_SESSION["studentview"] != "studentenview");
  348. if ($display_add_course_link)
  349. display_create_course_link();
  350. display_edit_course_list_links();
  351. $navigation=array();
  352. // Link to my profile
  353. $navigation['myprofile']['url'] = api_get_path(WEB_CODE_PATH).'auth/profile.php'.(!empty($_course['path']) ? '?coursePath='.$_course['path'].'&amp;courseCode='.$_course['official_code'] : '' );
  354. $navigation['myprofile']['title'] = get_lang('ModifyProfile');
  355. // Link to my agenda
  356. $navigation['myagenda']['url'] = api_get_path(WEB_CODE_PATH).'calendar/myagenda.php'.(!empty($_course['path']) ? '?coursePath='.$_course['path'].'&amp;courseCode='.$_course['official_code'] : '' );
  357. $navigation['myagenda']['title'] = get_lang('MyAgenda');
  358. foreach($navigation as $section => $navigation_info)
  359. {
  360. $current = ($section == $GLOBALS['this_section'] ? ' id="current"' : '');
  361. echo '<li'.$current.'>';
  362. echo '<a href="'.$navigation_info['url'].'" target="_top">'.$navigation_info['title'].'</a>';
  363. echo '</li>';
  364. echo "\n";
  365. }
  366. echo "</ul>";
  367. echo "</div>";
  368. }
  369. /**** use this comment to hide notice file section from right menu ****
  370. echo '<div class="note">';
  371. // includes for any files to be displayed below anonymous right menu
  372. if(!file_exists('home/home_notice_'.$user_selected_language.'.html'))
  373. {
  374. include ('home/home_notice.html');
  375. }
  376. else
  377. {
  378. include('home/home_notice_'.$user_selected_language.'.html');
  379. }
  380. echo '</div>';
  381. **** end of hide various right menu items on anonymous right menu ****/
  382. }
  383. /**
  384. * Reacts on a failed login:
  385. * displays an explanation with
  386. * a link to the registration form.
  387. *
  388. * @version 1.0.1
  389. */
  390. function handle_login_failed()
  391. {
  392. switch ($_GET['error'])
  393. {
  394. case '':
  395. $message = get_lang("InvalidId");
  396. if (api_is_self_registration_allowed())
  397. {
  398. $message = get_lang("InvalidForSelfRegistration");
  399. }
  400. break;
  401. case 'account_expired':
  402. $message=get_lang('AccountExpired');
  403. break;
  404. case 'account_inactive':
  405. $message=get_lang('AccountInactive');
  406. break;
  407. case 'user_password_incorrect':
  408. $message=get_lang('InvalidId');
  409. break;
  410. }
  411. echo "<div id=\"login_fail\">".$message."</div>";
  412. }
  413. /**
  414. * Adds a form to let users login
  415. * @version 1.1
  416. */
  417. function display_login_form()
  418. {
  419. $form = new FormValidator('formLogin');
  420. $form->addElement('text','login',get_lang('UserName'),array('size'=>15));
  421. $form->addElement('password','password',get_lang('Pass'),array('size'=>15));
  422. $form->addElement('submit','submitAuth',get_lang('Ok'));
  423. $renderer =& $form->defaultRenderer();
  424. $renderer->setElementTemplate('<div><label>{label}</label></div><div>{element}</div>');
  425. $form->display();
  426. }
  427. /**
  428. * Displays a link to the lost password section
  429. */
  430. function display_lost_password_info()
  431. {
  432. echo "<li><a href=\"main/auth/lostPassword.php\">".get_lang("LostPassword")."</a></li>";
  433. }
  434. /**
  435. * Display list of courses in a category.
  436. * (for anonymous users)
  437. *
  438. * @version 1.1
  439. * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University - refactoring and code cleaning
  440. */
  441. function display_anonymous_course_list()
  442. {
  443. //init
  444. $web_course_path = api_get_path(WEB_COURSE_PATH);
  445. $category = $_GET["category"];
  446. // Database table definitions
  447. $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
  448. $main_category_table = Database :: get_main_table(TABLE_MAIN_CATEGORY);
  449. $platformLanguage = api_get_setting('platformLanguage');
  450. //get list of courses in category $category
  451. $sql_get_course_list = "SELECT * FROM $main_course_table cours
  452. WHERE category_code = '".mysql_real_escape_string($_GET["category"])."'
  453. ORDER BY UPPER(visual_code)";
  454. //removed: AND cours.visibility='".COURSE_VISIBILITY_OPEN_WORLD."'
  455. $sql_result_courses = api_sql_query($sql_get_course_list, __FILE__, __LINE__);
  456. while ($course_result = mysql_fetch_array($sql_result_courses))
  457. {
  458. $course_list[] = $course_result;
  459. }
  460. $sqlGetSubCatList = "
  461. SELECT t1.name,t1.code,t1.parent_id,t1.children_count,COUNT(DISTINCT t3.code) AS nbCourse
  462. FROM $main_category_table t1
  463. LEFT JOIN $main_category_table t2 ON t1.code=t2.parent_id
  464. LEFT JOIN $main_course_table t3 ON (t3.category_code=t1.code AND t3.visibility='".COURSE_VISIBILITY_OPEN_WORLD."')
  465. WHERE t1.parent_id ". (empty ($category) ? "IS NULL" : "='$category'")."
  466. GROUP BY t1.name,t1.code,t1.parent_id,t1.children_count ORDER BY t1.tree_pos";
  467. $resCats = api_sql_query($sqlGetSubCatList, __FILE__, __LINE__);
  468. $thereIsSubCat = FALSE;
  469. if (mysql_num_rows($resCats) > 0)
  470. {
  471. $htmlListCat = "<h4 style=\"margin-top: 0px;\">".get_lang("CatList")."</h4>"."<ul>";
  472. while ($catLine = mysql_fetch_array($resCats))
  473. {
  474. if ($catLine['code'] != $category)
  475. {
  476. $htmlListCat .= "<li>";
  477. $category_has_open_courses = category_has_open_courses($catLine['code']);
  478. if ($category_has_open_courses)
  479. {
  480. //the category contains courses accessible to anonymous visitors
  481. $htmlListCat .= "<a href=\"".api_get_self()."?category=".$catLine['code']."\">".$catLine['name']."</a>";
  482. if (get_setting('show_number_of_courses') == 'true')
  483. {
  484. $htmlListCat .= " (".$catLine['nbCourse']." ".get_lang("Courses").")";
  485. }
  486. }
  487. elseif ($catLine['children_count'] > 0)
  488. {
  489. //the category has children, subcategories
  490. $htmlListCat .= "<a href=\"".api_get_self()."?category=".$catLine['code']."\">".$catLine['name']."</a>";
  491. }
  492. /************************************************************************
  493. end changed code to eliminate the (0 courses) after empty categories
  494. ************************************************************************/
  495. elseif (get_setting('show_empty_course_categories') == 'true')
  496. {
  497. $htmlListCat .= $catLine['name'];
  498. }
  499. $htmlListCat .= "</li>\n";
  500. $thereIsSubCat = true;
  501. }
  502. else
  503. {
  504. $htmlTitre = "<p>";
  505. if ($_setting['show_back_link_on_top_of_tree'] == 'true')
  506. {
  507. $htmlTitre .= "<a href=\"".api_get_self()."\">"."&lt;&lt; ".get_lang("BackToHomePage")."</a>";
  508. }
  509. if (!is_null($catLine['parent_id']) || ($_setting['show_back_link_on_top_of_tree'] <> 'true' && !is_null($catLine['code'])))
  510. {
  511. $htmlTitre .= "<a href=\"".api_get_self()."?category=".$catLine['parent_id']."\">"."&lt;&lt; ".get_lang("Up")."</a>";
  512. }
  513. $htmlTitre .= "</p>\n";
  514. if ($category != "" && !is_null($catLine['code']))
  515. {
  516. $htmlTitre .= "<h3>".$catLine['name']."</h3>\n";
  517. }
  518. else
  519. {
  520. $htmlTitre .= "<h3>".get_lang("Categories")."</h3>\n";
  521. }
  522. }
  523. }
  524. $htmlListCat .= "</ul>\n";
  525. }
  526. echo $htmlTitre;
  527. if ($thereIsSubCat)
  528. {
  529. echo $htmlListCat;
  530. }
  531. while ($categoryName = mysql_fetch_array($resCats))
  532. {
  533. echo "<h3>", $categoryName['name'], "</h3>\n";
  534. }
  535. $numrows = mysql_num_rows($sql_result_courses);
  536. if ($numrows > 0)
  537. {
  538. if ($thereIsSubCat)
  539. {
  540. echo "<hr size=\"1\" noshade=\"noshade\">\n";
  541. }
  542. echo "<h4 style=\"margin-top: 0px;\">", get_lang("CourseList"), "</h4>\n", "<ul>\n";
  543. foreach ($course_list AS $course)
  544. {
  545. echo "<li>\n";
  546. echo "<a href=\"".$web_course_path.$course['directory'], "/\">", $course['title'], "</a>";
  547. echo "<br/>", $course['visual_code'], " - ", $course['tutor_name'];
  548. if ($_setting['show_different_course_language'] == 'true' && $course['course_language'] <> api_get_setting('platformLanguage'))
  549. {
  550. echo ' - '.$course['course_language'];
  551. }
  552. echo "</li>\n";
  553. }
  554. echo "</ul>\n";
  555. }
  556. else
  557. {
  558. // echo "<blockquote>",get_lang('_No_course_publicly_available'),"</blockquote>\n";
  559. }
  560. if ($category != "")
  561. {
  562. echo "<p>", "<a href=\"".api_get_self()."\"><b>&lt;&lt;</b> ", get_lang("BackToHomePage"), "</a>", "</p>\n";
  563. }
  564. }
  565. ?>