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- <?php
- /*
- DOKEOS - elearning and course management software
- For a full list of contributors, see documentation/credits.html
- This program is free software; you can redistribute it and/or
- modify it under the terms of the GNU General Public License
- as published by the Free Software Foundation; either version 2
- of the License, or (at your option) any later version.
- See "documentation/licence.html" more details.
- Contact:
- Dokeos
- Rue des Palais 44 Paleizenstraat
- B-1030 Brussels - Belgium
- Tel. +32 (2) 211 34 56
- */
- /**
- * @package dokeos.main
- * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University, Refactoring
- * @version $Id: index.php 13120 2007-09-20 05:51:07Z yannoo $
- * @todo check the different @todos in this page and really do them
- * @todo check if the news management works as expected
- */
- // only this script should have this constant defined. This is used to activate the javascript that
- // gives the login name automatic focus in header.inc.html.
- /** @todo Couldn't this be done using the $HtmlHeadXtra array? */
- define('DOKEOS_HOMEPAGE', true);
- // the language file
- $language_file = array ('courses', 'index');
- /* Flag forcing the 'current course' reset, as we're not inside a course anymore */
- // maybe we should change this into an api function? an example: Coursemanager::unset();
- $cidReset = true;
- /*
- -----------------------------------------------------------
- Included libraries
- -----------------------------------------------------------
- */
- /** @todo make all the library files consistent use filename.lib.php and not filename.lib.inc.php */
- require_once ('./main/inc/global.inc.php');
- include_once (api_get_path(LIBRARY_PATH).'course.lib.php');
- include_once (api_get_path(LIBRARY_PATH).'debug.lib.inc.php');
- include_once (api_get_path(LIBRARY_PATH).'events.lib.inc.php');
- include_once (api_get_path(LIBRARY_PATH).'system_announcements.lib.php');
- include_once (api_get_path(LIBRARY_PATH).'groupmanager.lib.php');
- include_once (api_get_path(LIBRARY_PATH).'formvalidator/FormValidator.class.php');
- $loginFailed = isset($_GET['loginFailed']) ? true : isset($loginFailed);
- // the section (for the tabs)
- $this_section = SECTION_CAMPUS;
- /*
- -----------------------------------------------------------
- Action Handling
- -----------------------------------------------------------
- */
- /** @todo wouldn't it make more sense if this would be done in local.inc.php so that local.inc.php become the only place where authentication is done?
- * by doing this you could logout from any page instead of only from index.php. From the moment there is a logout=true in the url you will be logged out
- * this can be usefull when you are on an open course and you need to log in to edit something and you immediately want to check how anonymous users
- * will see it.
- */
- if ($_GET['logout'])
- {
- logout();
- }
- /*
- -----------------------------------------------------------
- Table definitions
- -----------------------------------------------------------
- */
- $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
- $main_category_table = Database :: get_main_table(TABLE_MAIN_CATEGORY);
- $track_login_table = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
- /*
- -----------------------------------------------------------
- Constants and CONFIGURATION parameters
- -----------------------------------------------------------
- */
- /** @todo these configuration settings should move to the dokeos config settings */
- /** defines wether or not anonymous visitors can see a list of the courses on the Dokeos homepage that are open to the world */
- $_setting['display_courses_to_anonymous_users'] = 'true';
- /** @todo remove this piece of code because this is not used */
- if (isset ($_user['user_id']))
- {
- $nameTools = api_get_setting('siteName');
- }
- /*
- ==============================================================================
- LOGIN
- ==============================================================================
- */
- /**
- * @todo This piece of code should probably move to local.inc.php where the actual login / logout procedure is handled.
- * @todo consider removing this piece of code because does nothing.
- */
- if ($_GET["submitAuth"] == 1)
- {
- // nice lie!!!
- echo "Attempted breakin - sysadmins notified.";
- session_destroy();
- die();
- }
- /**
- * @todo This piece of code should probably move to local.inc.php where the actual login procedure is handled.
- * @todo check if this code is used. I think this code is never executed because after clicking the submit button
- * the code does the stuff in local.inc.php and then redirects to index.php or user_portal.php depending
- * on api_get_setting('page_after_login')
- */
- if ($_POST["submitAuth"])
- {
- // the user is already authenticated, we now find the last login of the user.
- if (isset ($_user['user_id']))
- {
- $sql_last_login = "SELECT UNIX_TIMESTAMP(login_date)
- FROM $track_login_table
- WHERE login_user_id = '".$_user['user_id']."'
- ORDER BY login_date DESC LIMIT 1";
- $result_last_login = api_sql_query($sql_last_login, __FILE__, __LINE__);
- if (!$result_last_login)
- if (mysql_num_rows($result_last_login) > 0)
- {
- $user_last_login_datetime = mysql_fetch_array($result_last_login);
- $user_last_login_datetime = $user_last_login_datetime[0];
- api_session_register('user_last_login_datetime');
- }
- mysql_free_result($result_last_login);
- //event_login();
- if (api_is_platform_admin())
- {
- // decode all open event informations and fill the track_c_* tables
- include (api_get_path(LIBRARY_PATH)."stats.lib.inc.php");
- decodeOpenInfos();
- }
- }
- } // end login -- if($_POST["submitAuth"])
- else
- {
- // only if login form was not sent because if the form is sent the user was already on the page.
- event_open();
- }
- // the header
- Display :: display_header('', 'dokeos');
- /*
- ==============================================================================
- MAIN CODE
- ==============================================================================
- */
- echo '<div class="maincontent" id="content">';
- // Plugins for loginpage_main AND campushomepage_main
- if (!api_get_user_id())
- {
- api_plugin('loginpage_main');
- }
- else
- {
- api_plugin('campushomepage_main');
- }
- // Including the page for the news
- $page_included = false;
- if (!empty ($_GET['include']) && !strstr($_GET['include'], '/') && !strstr($_GET['include'], '\\') && strstr($_GET['include'], '.html'))
- {
- include ('./home/'.$_GET['include']);
- $page_included = true;
- }
- else
- {
-
- if(!empty($_SESSION['user_language_choice']))
- {
- $user_selected_language=$_SESSION['user_language_choice'];
- }
- elseif(!empty($_SESSION['_user']['language']))
- {
- $user_selected_language=$_SESSION['_user']['language'];
- }
- else
- {
- $user_selected_language=get_setting('platformLanguage');
- }
-
- if(!file_exists('home/home_news_'.$user_selected_language.'.html'))
- {
- $home_top_temp=file('home/home_top.html');
- $home_top_temp=implode('',$home_top_temp);
- $open=str_replace('{rel_path}',api_get_path(REL_PATH),$home_top_temp);
- echo $open;
- }
- else
- {
- if(file_exists('home/home_top_'.$user_selected_language.'.html'))
- {
- include('home/home_top_'.$user_selected_language.'.html');
- }
- else
- {
- include('home/home_top.html');
- }
- }
- }
- // Display System announcements
- $announcement = $_GET['announcement'] ? $_GET['announcement'] : -1;
- $announcement = intval($announcement);
- SystemAnnouncementManager :: display_announcements(VISIBLE_GUEST, $announcement);
- // Display courses and category list
- if (!$page_included)
- {
- if (api_get_setting('display_categories_on_homepage') == 'true')
- {
- echo '<div class="home_cats">';
- display_anonymous_course_list();
- echo '</div>';
- }
- }
- echo '</div>';
- // display right menu: language form, login section + useful weblinks
- echo '<div class="menu" id="menu">';
- display_anonymous_right_menu();
- echo '</div>';
- /*
- ==============================================================================
- FOOTER
- ==============================================================================
- */
- Display :: display_footer();
- /**
- * This function handles the logout and is called whenever there is a $_GET['logout']
- *
- * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University
- */
- function logout()
- {
- global $_configuration, $extAuthSource;
- // variable initialisation
- $query_string='';
- if(!empty($_SESSION['user_language_choice']))
- {
- $query_string='?language='.$_SESSION['user_language_choice'];
- }
- // Database table definition
- $tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
- // selecting the last login of the user
- $uid = intval($_GET['uid']);
- $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";
- $q_last_connection=mysql_query($sql_last_connection);
- $i_id_last_connection=mysql_result($q_last_connection,0,"login_id");
- $s_sql_update_logout_date="UPDATE $tbl_track_login SET logout_date=NOW() WHERE login_id='$i_id_last_connection'";
- api_sql_query($s_sql_update_logout_date);
- LoginDelete($uid, $_configuration['statistics_database']); //from inc/lib/online.inc.php - removes the "online" status
-
- //the following code enables the use of an external logout function.
- //example: define a $extAuthSource['ldap']['logout']="file.php" in configuration.php
- // then a function called ldap_logout() inside that file
- // (using *authent_name*_logout as the function name) and the following code
- // will find and execute it
- $uinfo = api_get_user_info($uid);
- if(($uinfo['auth_source'] != PLATFORM_AUTH_SOURCE) && is_array($extAuthSource))
- {
- if(is_array($extAuthSource[$uinfo['auth_source']]))
- {
- $subarray = $extAuthSource[$uinfo['auth_source']];
- if(!empty($subarray['logout']) && file_exists($subarray['logout']))
- {
- include_once($subarray['logout']);
- $logout_function = $uinfo['auth_source'].'_logout';
- if(function_exists($logout_function))
- {
- $logout_function($uinfo);
- }
- }
- }
- }
- api_session_destroy();
- header("Location: index.php$query_string");
- exit();
- }
- /**
- * This function checks if there are courses that are open to the world in the platform course categories (=faculties)
- *
- * @param unknown_type $category
- * @return boolean
- */
- function category_has_open_courses($category)
- {
- $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
- $sql_query = "SELECT * FROM $main_course_table WHERE category_code='$category'";
- $sql_result = api_sql_query($sql_query, __FILE__, __LINE__);
- while ($course = mysql_fetch_array($sql_result))
- {
- if ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)
- {
- return true; //at least one open course
- }
- }
- return false;
- }
- function display_create_course_link()
- {
- echo "<li><a href=\"main/create_course/add_course.php\">".get_lang("CourseCreate")."</a></li>";
- }
- function display_edit_course_list_links()
- {
- echo "<li><a href=\"main/auth/courses.php\">".get_lang("CourseManagement")."</a></li>";
- }
- /**
- * Displays the right-hand menu for anonymous users:
- * login form, useful links, help section
- * Warning: function defines globals
- * @version 1.0.1
- * @todo does $_plugins need to be global?
- */
- function display_anonymous_right_menu()
- {
- global $loginFailed, $_plugins, $_user, $menu_navigation;
- $platformLanguage = api_get_setting('platformLanguage');
- if ( !($_user['user_id']) ) // only display if the user isn't logged in
- {
- api_display_language_form();
- echo '<br />';
- display_login_form();
- if ($loginFailed)
- {
- handle_login_failed();
- }
- if (api_get_setting('allow_lostpassword') == 'true' OR api_get_setting('allow_registration') == 'true')
- {
- echo '<div class="menusection"><span class="menusectioncaption">'.get_lang('MenuUser').'</span><ul class="menulist">';
- if (get_setting('allow_registration') <> 'false')
- {
- echo '<li><a href="main/auth/inscription.php">'.get_lang('Reg').'</a></li>';
- }
- if (get_setting('allow_lostpassword') == 'true')
- {
- display_lost_password_info();
- }
- echo '</ul></div>';
- }
- if(api_number_of_plugins('loginpage_menu') > 0)
- {
- echo '<div class="note" style="background: none">';
- api_plugin('loginpage_menu');
- echo '</div>';
- }
- }
- /*** hide right menu "general" and other parts on anonymous right menu *****/
- echo "<div class=\"menusection\">", "<span class=\"menusectioncaption\">".get_lang("MenuGeneral")."</span>";
- echo "<ul class=\"menulist\">";
- $user_selected_language = api_get_interface_language();
- if (!isset ($user_selected_language))
- $user_selected_language = $platformLanguage;
- if(!file_exists('home/home_menu_'.$user_selected_language.'.html'))
- {
- include ('home/home_menu.html');
- }
- else
- {
- include('home/home_menu_'.$user_selected_language.'.html');
- }
- echo '</ul>';
- echo '</div>';
- if ($_user['user_id'] && api_number_of_plugins('campushomepage_menu') > 0)
- {
- echo '<div class="note" style="background: none">';
- api_plugin('campushomepage_menu');
- echo '</div>';
- }
- /**
- * User section
- */
- if(isset($_SESSION['_user']['user_id']) && $_SESSION['_user']['user_id']!=0)
- {
- // tabs that are deactivated are added here
- if (!empty($menu_navigation))
- {
- echo "<div class=\"menusection\">";
- echo "<span class=\"menusectioncaption\">".get_lang("MainNavigation")."</span>";
- echo "<ul class=\"menulist\">";
- foreach($menu_navigation as $section => $navigation_info)
- {
- $current = ($section == $GLOBALS['this_section'] ? ' id="current"' : '');
- echo '<li'.$current.'>';
- echo '<a href="'.$navigation_info['url'].'" target="_top">'.$navigation_info['title'].'</a>';
- echo '</li>';
- echo "\n";
- }
- echo "</ul>";
- echo '</div>';
- }
- echo "<div class=\"menusection\">";
- echo "<span class=\"menusectioncaption\">".get_lang("MenuUser")."</span>";
- echo "<ul class=\"menulist\">";
- $display_add_course_link = api_is_allowed_to_create_course() && ($_SESSION["studentview"] != "studentenview");
- if ($display_add_course_link)
- display_create_course_link();
- display_edit_course_list_links();
- echo "</ul>";
- echo "</div>";
- }
-
- // includes for any files to be displayed below anonymous right menu
- if(!file_exists('home/home_notice_'.$user_selected_language.'.html') && file_get_contents('home/home_notice.html')!='')
- {
- echo '<div class="note">';
- include ('home/home_notice.html');
- echo '</div>';
- }
- elseif(file_exists('home/home_notice_'.$user_selected_language.'.html') && file_get_contents('home/home_notice_'.$user_selected_language.'.html')!='')
- {
- echo '<div class="note">';
- include('home/home_notice_'.$user_selected_language.'.html');
- echo '</div>';
- }
-
- }
- /**
- * Reacts on a failed login:
- * displays an explanation with
- * a link to the registration form.
- *
- * @version 1.0.1
- */
- function handle_login_failed()
- {
- switch ($_GET['error'])
- {
- case '':
- $message = get_lang("InvalidId");
- if (api_is_self_registration_allowed())
- {
- $message = get_lang("InvalidForSelfRegistration");
- }
- break;
- case 'account_expired':
- $message=get_lang('AccountExpired');
- break;
- case 'account_inactive':
- $message=get_lang('AccountInactive');
- break;
- case 'user_password_incorrect':
- $message=get_lang('InvalidId');
- break;
- }
- echo "<div id=\"login_fail\">".$message."</div>";
- }
- /**
- * Adds a form to let users login
- * @version 1.1
- */
- function display_login_form()
- {
- $form = new FormValidator('formLogin');
- $form->addElement('text','login',get_lang('UserName'),array('size'=>15));
- $form->addElement('password','password',get_lang('Pass'),array('size'=>15));
- $form->addElement('submit','submitAuth',get_lang('Ok'));
- $renderer =& $form->defaultRenderer();
- $renderer->setElementTemplate('<div><label>{label}</label></div><div>{element}</div>');
- $form->display();
- }
- /**
- * Displays a link to the lost password section
- */
- function display_lost_password_info()
- {
- echo "<li><a href=\"main/auth/lostPassword.php\">".get_lang("LostPassword")."</a></li>";
- }
- /**
- * Display list of courses in a category.
- * (for anonymous users)
- *
- * @version 1.1
- * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University - refactoring and code cleaning
- */
- function display_anonymous_course_list()
- {
- //init
- $web_course_path = api_get_path(WEB_COURSE_PATH);
- $category = $_GET["category"];
- // Database table definitions
- $main_course_table = Database :: get_main_table(TABLE_MAIN_COURSE);
- $main_category_table = Database :: get_main_table(TABLE_MAIN_CATEGORY);
- $platformLanguage = api_get_setting('platformLanguage');
- //get list of courses in category $category
- $sql_get_course_list = "SELECT * FROM $main_course_table cours
- WHERE category_code = '".mysql_real_escape_string($_GET["category"])."'
- ORDER BY UPPER(visual_code)";
- //removed: AND cours.visibility='".COURSE_VISIBILITY_OPEN_WORLD."'
- $sql_result_courses = api_sql_query($sql_get_course_list, __FILE__, __LINE__);
- while ($course_result = mysql_fetch_array($sql_result_courses))
- {
- $course_list[] = $course_result;
- }
- $sqlGetSubCatList = "
- SELECT t1.name,t1.code,t1.parent_id,t1.children_count,COUNT(DISTINCT t3.code) AS nbCourse
- FROM $main_category_table t1
- LEFT JOIN $main_category_table t2 ON t1.code=t2.parent_id
- LEFT JOIN $main_course_table t3 ON (t3.category_code=t1.code AND t3.visibility='".COURSE_VISIBILITY_OPEN_WORLD."')
- WHERE t1.parent_id ". (empty ($category) ? "IS NULL" : "='$category'")."
- GROUP BY t1.name,t1.code,t1.parent_id,t1.children_count ORDER BY t1.tree_pos";
- $resCats = api_sql_query($sqlGetSubCatList, __FILE__, __LINE__);
- $thereIsSubCat = false;
- if (mysql_num_rows($resCats) > 0)
- {
- $htmlListCat = "<h4 style=\"margin-top: 0px;\">".get_lang("CatList")."</h4>"."<ul>";
- while ($catLine = mysql_fetch_array($resCats))
- {
- if ($catLine['code'] != $category)
- {
- $category_has_open_courses = category_has_open_courses($catLine['code']);
- if ($category_has_open_courses)
- {
- //the category contains courses accessible to anonymous visitors
- $htmlListCat .= "<li>";
- $htmlListCat .= "<a href=\"".api_get_self()."?category=".$catLine['code']."\">".$catLine['name']."</a>";
- if (api_get_setting('show_number_of_courses') == 'true')
- {
- $htmlListCat .= " (".$catLine['nbCourse']." ".get_lang("Courses").")";
- }
- $htmlListCat .= "</li>\n";
- $thereIsSubCat = true;
- }
- elseif ($catLine['children_count'] > 0)
- {
- //the category has children, subcategories
- $htmlListCat .= "<li>";
- $htmlListCat .= "<a href=\"".api_get_self()."?category=".$catLine['code']."\">".$catLine['name']."</a>";
- $htmlListCat .= "</li>\n";
- $thereIsSubCat = true;
- }
- /************************************************************************
- end changed code to eliminate the (0 courses) after empty categories
- ************************************************************************/
- elseif (api_get_setting('show_empty_course_categories') == 'true')
- {
- $htmlListCat .= "<li>";
- $htmlListCat .= $catLine['name'];
- $htmlListCat .= "</li>\n";
- $thereIsSubCat = true;
- }//else don't set thereIsSubCat to true to avoid printing things if not requested
- }
- else
- {
- $htmlTitre = "<p>";
- if (api_get_setting('show_back_link_on_top_of_tree') == 'true')
- {
- $htmlTitre .= "<a href=\"".api_get_self()."\">"."<< ".get_lang("BackToHomePage")."</a>";
- }
- if (!is_null($catLine['parent_id']) || (api_get_setting('show_back_link_on_top_of_tree') <> 'true' && !is_null($catLine['code'])))
- {
- $htmlTitre .= "<a href=\"".api_get_self()."?category=".$catLine['parent_id']."\">"."<< ".get_lang("Up")."</a>";
- }
- $htmlTitre .= "</p>\n";
- if ($category != "" && !is_null($catLine['code']))
- {
- $htmlTitre .= "<h3>".$catLine['name']."</h3>\n";
- }
- else
- {
- $htmlTitre .= "<h3>".get_lang("Categories")."</h3>\n";
- }
- }
- }
- $htmlListCat .= "</ul>\n";
- }
- echo $htmlTitre;
- if ($thereIsSubCat)
- {
- echo $htmlListCat;
- }
- while ($categoryName = mysql_fetch_array($resCats))
- {
- echo "<h3>", $categoryName['name'], "</h3>\n";
- }
- $numrows = mysql_num_rows($sql_result_courses);
- $courses_list_string = '';
- $courses_shown = 0;
- if ($numrows > 0)
- {
- if ($thereIsSubCat)
- {
- $courses_list_string .= "<hr size=\"1\" noshade=\"noshade\">\n";
- }
- $courses_list_string .= "<h4 style=\"margin-top: 0px;\">".get_lang("CourseList")."</h4>\n"."<ul>\n";
- foreach ($course_list AS $course)
- {
- if($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD){
- $courses_shown++;
- $courses_list_string .= "<li>\n";
- $courses_list_string .= "<a href=\"".$web_course_path.$course['directory']."/\">".$course['title']."</a>";
- $courses_list_string .= "<br/>".$course['visual_code']." - ".$course['tutor_name'];
- if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] <> api_get_setting('platformLanguage'))
- {
- $courses_list_string .= ' - '.$course['course_language'];
- }
- $courses_list_string .= "</li>\n";
- }
- }
- $courses_list_string .= "</ul>\n";
- }
- else
- {
- // echo "<blockquote>",get_lang('_No_course_publicly_available'),"</blockquote>\n";
- }
- if($courses_shown > 0)
- { //only display the list of courses and categories if there was more than
- // 0 courses visible to the world (we're in the anonymous list here)
- echo $courses_list_string;
- }
- if ($category != "")
- {
- echo "<p>", "<a href=\"".api_get_self()."\"><b><<</b> ", get_lang("BackToHomePage"), "</a>", "</p>\n";
- }
- }
- ?>
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