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- <?php // $Id: index.php 22368 2009-07-24 23:25:57Z iflorespaz $
-
- /*
- ==============================================================================
- Dokeos - elearning and course management software
- Copyright (c) 2004-2009 Dokeos SPRL
- Copyright (c) 2003 Ghent University (UGent)
- Copyright (c) 2001 Universite catholique de Louvain (UCL)
- Copyright (c) various contributors
- For a full list of contributors, see "credits.txt".
- The full license can be read in "license.txt".
- 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 the GNU General Public License for more details.
- Contact address: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium
- Mail: info@dokeos.com
- ==============================================================================
- */
- /**
- * @package dokeos.main
- * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University, Refactoring
- * @version $Id: index.php 22368 2009-07-24 23:25:57Z iflorespaz $
- * @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');
- require_once 'main/chat/chat_functions.lib.php';
- $loginFailed = isset($_GET['loginFailed']) ? true : isset($loginFailed);
- $setting_show_also_closed_courses = (api_get_setting('show_closed_courses')=='true') ? true : false;
- // 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.
- */
- $my_user_id=api_get_user_id();
- if (!empty($_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'])) {
- $nameTools = api_get_setting('siteName');
- }
- /*
- ==============================================================================
- LOGIN
- ==============================================================================
- */
- /**
- * @todo This piece of code should probably move to local.inc.php where the actual login / logout procedure is handled.
- * @todo consider removing this piece of code because does nothing.
- */
- if (isset($_GET['submitAuth']) && $_GET['submitAuth'] == 1) {
- // nice lie!!!
- echo 'Attempted breakin - sysadmins notified.';
- session_destroy();
- die();
- }
- //Delete session neccesary for legal terms
- if (get_setting('allow_terms_conditions')=='true') {
- unset($_SESSION['update_term_and_condition']);
- unset($_SESSION['info_current_user']);
- }
- /**
- * @todo This piece of code should probably move to local.inc.php where the actual login procedure is handled.
- * @todo check if this code is used. I think this code is never executed because after clicking the submit button
- * the code does the stuff in local.inc.php and then redirects to index.php or user_portal.php depending
- * on api_get_setting('page_after_login')
- */
- if (!empty($_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 (!$result_last_login)
- if (Database::num_rows($result_last_login) > 0) {
- $user_last_login_datetime = Database::fetch_array($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');
- }
- $home= 'home/';
- if ($_configuration['multiple_access_urls']==true) {
- $access_url_id = api_get_current_access_url_id();
- if ($access_url_id != -1){
- $url_info = api_get_access_url($access_url_id);
- // "http://" and the final "/" replaced
- $url = substr($url_info['url'],7,strlen($url_info['url'])-8);
- $clean_url = replace_dangerous_char($url);
- $clean_url = str_replace('/','-',$clean_url);
- $clean_url = $clean_url.'/';
- $home_old = 'home/';
- $home= 'home/'.$clean_url;
- }
- }
- // Including the page for the news
- $page_included = false;
- if (!empty ($_GET['include']) && preg_match('/^[a-zA-Z0-9_-]*\.html$/',$_GET['include'])) {
- 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_'.$user_selected_language.'.html')) {
- if (file_exists($home.'home_top.html'))
- $home_top_temp=file($home.'home_top.html');
- else {
- $home_top_temp=file($home_old.'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')) {
- $home_top_temp = file_get_contents($home.'home_top_'.$user_selected_language.'.html');
- } else {
- $home_top_temp = file_get_contents($home.'home_top.html');
- }
- $open=str_replace('{rel_path}',api_get_path(REL_PATH),$home_top_temp);
- echo $open;
- }
- }
- // Display System announcements
- $announcement = isset($_GET['announcement']) ? $_GET['announcement'] : -1;
- $announcement = intval($announcement);
- if (isset($_user['user_id'])) {
- $visibility = api_is_allowed_to_create_course() ? VISIBLE_TEACHER : VISIBLE_STUDENT;
- SystemAnnouncementManager :: display_announcements($visibility, $announcement);
- } else {
- 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";
- $q_last_connection=api_sql_query($sql_last_connection);
- if (Database::num_rows($q_last_connection)>0) {
- $i_id_last_connection=Database::result($q_last_connection,0,"login_id");
- }
-
- if (!isset($_SESSION['login_as'])) {
- $current_date=date('Y-m-d H:i:s',time());
- $s_sql_update_logout_date="UPDATE $tbl_track_login SET logout_date='".$current_date."' 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);
- }
- }
- }
- }
- exit_of_chat($uid);
- api_session_destroy();
- header("Location: index.php$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) {
- global $setting_show_also_closed_courses;
-
- $user_identified = (api_get_user_id()>0 && !api_is_anonymous());
- $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 ($course = Database::fetch_array($sql_result)) {
- if ($setting_show_also_closed_courses == false) {
- if ((api_get_user_id()>0
- and $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
- or ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)) {
- return true; //at least one open course
- }
- } else {
- if(isset($course['visibility'])){
- return true; //at least one course (does not matter weither it's open or not because $setting_show_also_closed_courses = true
- }
- }
- }
- 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']) or api_is_anonymous($_user['user_id']) ) { // only display if the user isn't logged in
- api_display_language_form(true);
- echo '<br />';
- display_login_form();
- if ($loginFailed) {
- echo '<br />';
- 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>';
- }
- }
- // My Account section
- if (isset($_SESSION['_user']['user_id']) && $_SESSION['_user']['user_id']!=0) {
- // tabs that are deactivated are added here
- $show_menu=false;
- $show_create_link=false;
- $show_course_link=false;
-
- $display_add_course_link = api_is_allowed_to_create_course() && ($_SESSION["studentview"] != "studentenview");
-
- if ($display_add_course_link) {
- //display_create_course_link();
- $show_menu=true;
- $show_create_link=true;
- }
-
- if (api_is_platform_admin() || api_is_course_admin() || api_is_allowed_to_create_course()) {
- $show_menu=true;
- $show_course_link=true;
- } else {
- if (api_get_setting('allow_students_to_browse_courses')=='true') {
- $show_menu=true;
- $show_course_link=true;
- }
- }
-
- if ($show_menu){
- echo "<div class=\"menusection\">";
- echo "<span class=\"menusectioncaption\">".get_lang("MenuUser")."</span>";
- echo "<ul class=\"menulist\">";
- if ($show_create_link)
- display_create_course_link();
- if ($show_course_link)
- display_edit_course_list_links();
- echo "</ul>";
- echo "</div>";
- }
-
- 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="'.$navigation_info['url'].'" target="_self">'.$navigation_info['title'].'</a>';
- echo '</li>';
- echo "\n";
- }
- echo "</ul>";
- echo '</div>';
- }
- }
-
- // help section
- /*** hide right menu "general" and other parts on anonymous right menu *****/
-
- $user_selected_language = api_get_interface_language();
- global $home, $home_old;
- if (!isset ($user_selected_language))
- {
- $user_selected_language = $platformLanguage;
- }
- if (!file_exists($home.'home_menu_'.$user_selected_language.'.html') && file_exists($home.'home_menu.html') && file_get_contents($home.'home_menu.html')!='')
- {
- echo "<div class=\"menusection\">", "<span class=\"menusectioncaption\">".get_lang("MenuGeneral")."</span>";
- echo "<ul class=\"menulist\">";
- if (file_exists($home.'home_menu.html'))
- include ($home.'home_menu.html');
- else {
- include ($home_old.'home_menu.html');
- }
- echo '</ul>';
- echo '</div>';
- }
- elseif(file_exists($home.'home_menu_'.$user_selected_language.'.html') && file_get_contents($home.'home_menu_'.$user_selected_language.'.html')!='')
- {
- echo "<div class=\"menusection\">", "<span class=\"menusectioncaption\">".get_lang("MenuGeneral")."</span>";
- echo "<ul class=\"menulist\">";
- include($home.'home_menu_'.$user_selected_language.'.html');
- echo '</ul>';
- echo '</div>';
- }
-
- if ($_user['user_id'] && api_number_of_plugins('campushomepage_menu') > 0) {
- echo '<div class="note" style="background: none">';
- api_plugin('campushomepage_menu');
- echo '</div>';
- }
-
- // includes for any files to be displayed below anonymous right menu
-
- if (!file_exists($home.'home_notice_'.$user_selected_language.'.html') && file_exists($home.'home_notice.html') && file_get_contents($home.'home_notice.html')!='') {
- echo '<div class="note">';
- if (file_exists($home.'home_notice.html'))
- include ($home.'home_notice.html');
- else {
- include ($home_old.'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() {
- if (!isset($_GET['error'])) {
- $message = get_lang("InvalidId");
- if (api_is_self_registration_allowed()) {
- $message = get_lang("InvalidForSelfRegistration");
- }
- } else {
- switch ($_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;
- case 'access_url_inactive':
- $message=get_lang('AccountURLInactive');
- break;
- }
- }
- echo "<div id=\"login_fail\">".$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'=>17));
- $form->addElement('password','password',get_lang('Pass'),array('size'=>17));
- $form->addElement('style_submit_button','submitAuth',get_lang('langEnter'), array('class'=>'login'));
- $renderer =& $form->defaultRenderer();
- $renderer->setElementTemplate('<div><label>{label}</label></div><div>{element}</div>');
- $form->display();
- if (api_get_setting('openid_authentication')=='true') {
- include_once('main/auth/openid/login.php');
- echo '<div>'.openid_form().'</div>';
- }
- }
- /**
- * 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() {
- $ctok = $_SESSION['sec_token'];
- $stok = Security::get_token();
-
- //init
- $user_identified = (api_get_user_id()>0 && !api_is_anonymous());
- $web_course_path = api_get_path(WEB_COURSE_PATH);
- $category = Database::escape_string($_GET['category']);
- global $setting_show_also_closed_courses;
- // 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 $main_course_table cours
- WHERE category_code = '".Database::escape_string($_GET["category"])."'
- ORDER BY title, UPPER(visual_code)";
-
- //showing only the courses of the current access_url_id
- global $_configuration;
- if ($_configuration['multiple_access_urls']==true) {
- $url_access_id = api_get_current_access_url_id();
- if ($url_access_id !=-1) {
- $tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
- $sql_get_course_list="SELECT * FROM $main_course_table as course INNER JOIN $tbl_url_rel_course as url_rel_course
- ON (url_rel_course.course_code=course.code)
- WHERE access_url_id = $url_access_id AND category_code = '".Database::escape_string($_GET["category"])."' ORDER BY title, UPPER(visual_code)";
- }
- }
-
- //removed: AND cours.visibility='".COURSE_VISIBILITY_OPEN_WORLD."'
- $sql_result_courses = api_sql_query($sql_get_course_list, __FILE__, __LINE__);
- while ($course_result = Database::fetch_array($sql_result_courses)) {
- $course_list[] = $course_result;
- }
- $platform_visible_courses = '';
- // $setting_show_also_closed_courses
- if($user_identified) {
- if ($setting_show_also_closed_courses) {
- $platform_visible_courses = '';
- } else {
- $platform_visible_courses = " AND (t3.visibility='".COURSE_VISIBILITY_OPEN_WORLD."' OR t3.visibility='".COURSE_VISIBILITY_OPEN_PLATFORM."' )";
- }
- } else {
- if ($setting_show_also_closed_courses) {
- $platform_visible_courses = '';
- } else {
- $platform_visible_courses = " AND (t3.visibility='".COURSE_VISIBILITY_OPEN_WORLD."' )";
- }
- }
- $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 $platform_visible_courses)
- WHERE t1.parent_id ". (empty ($category) ? "IS NULL" : "='$category'")."
- GROUP BY t1.name,t1.code,t1.parent_id,t1.children_count ORDER BY t1.tree_pos, t1.name";
-
-
- //showing only the category of courses of the current access_url_id
- global $_configuration;
- if ($_configuration['multiple_access_urls']==true) {
- $url_access_id = api_get_current_access_url_id();
- if ($url_access_id !=-1) {
- $tbl_url_rel_course = Database::get_main_table(TABLE_MAIN_ACCESS_URL_REL_COURSE);
- $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 $platform_visible_courses)
- INNER JOIN $tbl_url_rel_course as url_rel_course
- ON (url_rel_course.course_code=t3.code)
- WHERE access_url_id = $url_access_id AND t1.parent_id ". (empty ($category) ? "IS NULL" : "='$category'")."
- GROUP BY t1.name,t1.code,t1.parent_id,t1.children_count ORDER BY t1.tree_pos, t1.name";
- }
- }
-
- $resCats = api_sql_query($sqlGetSubCatList, __FILE__, __LINE__);
- $thereIsSubCat = false;
- if (Database::num_rows($resCats) > 0) {
- $htmlListCat = "<h4 style=\"margin-top: 0px;\">".get_lang("CatList")."</h4>"."<ul>";
- while ($catLine = Database::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 = Database::fetch_array($resCats)) {
- echo "<h3>", $categoryName['name'], "</h3>\n";
- }
- $numrows = Database::num_rows($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";
-
- if (api_get_user_id()) {
- $courses_of_user = get_courses_of_user(api_get_user_id());
- }
-
- foreach ($course_list AS $course) {
- // $setting_show_also_closed_courses
-
- if ($setting_show_also_closed_courses==false) {
- // if we do not show the closed courses
- // we only show the courses that are open to the world (to everybody)
- // and the courses that are open to the platform (if the current user is a registered user
- if( ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM) OR ($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><br />";
- if (get_setting("display_coursecode_in_courselist") == "true") {
- $courses_list_string .= $course['visual_code'];
- }
- if (get_setting("display_coursecode_in_courselist") == "true" AND get_setting("display_teacher_in_courselist") == "true") {
- $courses_list_string .= " - ";
- }
- if (get_setting("display_teacher_in_courselist") == "true") {
- $courses_list_string .= $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";
- }
- }
- // we DO show the closed courses.
- // the course is accessible if (link to the course homepage)
- // 1. the course is open to the world (doesn't matter if the user is logged in or not): $course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)
- // 2. the user is logged in and the course is open to the world or open to the platform: ($user_identified && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
- // 3. the user is logged in and the user is subscribed to the course and the course visibility is not COURSE_VISIBILITY_CLOSED
- // 4. the user is logged in and the user is course admin of te course (regardless of the course visibility setting)
- // 5. the user is the platform admin api_is_platform_admin()
- //
- else {
- $courses_shown++;
- $courses_list_string .= "<li>\n";
- if ( $course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD
- OR ($user_identified AND $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
- OR ($user_identified AND key_exists($course['code'],$courses_of_user) AND $course['visibility'] <> COURSE_VISIBILITY_CLOSED)
- OR $courses_of_user[$course['code']]['status'] == '1'
- OR api_is_platform_admin()) {
- $courses_list_string .= "<a href=\"".$web_course_path.$course['directory']."/\">";
- }
- $courses_list_string .= $course['title'];
- if ( $course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD
- OR ($user_identified AND $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
- OR ($user_identified AND key_exists($course['code'],$courses_of_user) AND $course['visibility'] <> COURSE_VISIBILITY_CLOSED)
- OR $courses_of_user[$course['code']]['status'] == '1'
- OR api_is_platform_admin()) {
- $courses_list_string .="</a><br />";
- }
- if (get_setting("display_coursecode_in_courselist") == "true") {
- $courses_list_string .= $course['visual_code'];
- }
- if (get_setting("display_coursecode_in_courselist") == "true" AND get_setting("display_teacher_in_courselist") == "true") {
- $courses_list_string .= " - ";
- }
- if (get_setting("display_teacher_in_courselist") == "true")
- {
- $courses_list_string .= $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'];
- }
- if (api_get_setting('show_different_course_language') == 'true' && $course['course_language'] <> api_get_setting('platformLanguage')) {
- $courses_list_string .= ' - '.$course['course_language'];
- }
- // We display a subscription link if
- // 1. it is allowed to register for the course and if the course is not already in the courselist of the user and if the user is identiefied
- // 2
- if ($user_identified AND !key_exists($course['code'],$courses_of_user)) {
- if ($course['subscribe'] == '1') {
- $courses_list_string .= "<form action=\"main/auth/courses.php?action=subscribe&category=".$_GET['category']."\" method=\"post\">";
- $courses_list_string .= '<input type="hidden" name="sec_token" value="'.$stok.'">';
- $courses_list_string .= "<input type=\"hidden\" name=\"subscribe\" value=\"".$course['code']."\" />";
- $courses_list_string .= "<input type=\"image\" name=\"unsub\" src=\"main/img/enroll.gif\" alt=\"".get_lang("Subscribe")."\" />".get_lang("Subscribe")."</form>";
- } else {
- $courses_list_string .= '<br />'.get_lang("SubscribingNotAllowed");
- }
- }
- $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> ", Display :: return_icon('back.png', get_lang('BackToHomePage')),get_lang("BackToHomePage"), "</a>", "</p>\n";
- }
- }
- /**
- * retrieves all the courses that the user has already subscribed to
- * @author Patrick Cool <patrick.cool@UGent.be>, Ghent University, Belgium
- * @param int $user_id: the id of the user
- * @return array an array containing all the information of the courses of the given user
- */
- function get_courses_of_user($user_id) {
- $table_course = Database::get_main_table(TABLE_MAIN_COURSE);
- $table_course_user = Database::get_main_table(TABLE_MAIN_COURSE_USER);
- // Secondly we select the courses that are in a category (user_course_cat<>0) and sort these according to the sort of the category
- $user_id = intval($user_id);
- $sql_select_courses="SELECT course.code k, course.visual_code vc, course.subscribe subscr, course.unsubscribe unsubscr,
- course.title i, course.tutor_name t, course.db_name db, course.directory dir, course_rel_user.status status,
- course_rel_user.sort sort, course_rel_user.user_course_cat user_course_cat
- FROM $table_course course,
- $table_course_user course_rel_user
- WHERE course.code = course_rel_user.course_code
- AND course_rel_user.user_id = '".$user_id."'
- ORDER BY course_rel_user.sort ASC";
- $result = api_sql_query($sql_select_courses,__FILE__,__LINE__);
- while ($row=Database::fetch_array($result)) {
- // we only need the database name of the course
- $courses[$row['k']] = array("db"=> $row['db'], "code" => $row['k'], "visual_code" => $row['vc'], "title" => $row['i'], "directory" => $row['dir'], "status" => $row['status'], "tutor" => $row['t'], "subscribe" => $row['subscr'], "unsubscribe" => $row['unsubscr'], "sort" => $row['sort'], "user_course_category" => $row['user_course_cat']);
- }
- return $courses;
- }
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