<?php
/* For licensing terms, see /license.txt */
/**
* @package chamilo.main
* @author Patrick Cool < patrick.cool @ UGent . be > , Ghent University, Refactoring
* @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('CHAMILO_HOMEPAGE', true);
$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';
require_once api_get_path(LIBRARY_PATH).'course.lib.php';
require_once api_get_path(LIBRARY_PATH).'events.lib.inc.php';
require_once api_get_path(LIBRARY_PATH).'system_announcements.lib.php';
require_once api_get_path(LIBRARY_PATH).'groupmanager.lib.php';
require_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';
// The section (for the tabs).
$this_section = SECTION_CAMPUS;
unset($_SESSION['this_section']);//for hmtl editor repository
/* 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 Chamilo config settings. */
/** Defines wether or not anonymous visitors can see a list of the courses on the Chamilo 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']) & & $_GET['submitAuth'] == 1) {
// nice lie!!!
echo 'Attempted breakin - sysadmins notified.';
session_destroy();
die();
}
// Delete session neccesary for legal terms
if (api_get_setting('allow_terms_conditions') == 'true') {
unset($_SESSION['update_term_and_condition']);
unset($_SESSION['info_current_user']);
}
//If we are not logged in and customapages activated
if (!api_get_user_id() & & api_get_setting('use_custom_pages') == 'true' ){
require_once api_get_path(LIBRARY_PATH).'custompages.lib.php';
CustomPages::displayPage('index-unlogged');
}
/**
* @todo This piece of code should probably move to local.inc.php where the actual login procedure is handled.
* @todo Check if this code is used. I think this code is never executed because after clicking the submit button
* the code does the stuff in local.inc.php and then redirects to index.php or user_portal.php depending
* on api_get_setting('page_after_login').
*/
if (!empty($_POST['submitAuth'])) {
// The user has been already authenticated, we are now to 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";
$result_last_login = Database::query($sql_last_login);
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 = $user_last_login_datetime[0];
api_session_register('user_last_login_datetime');
}
}
Database::free_result($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 ($_POST['submitAuth'])
else {
// Only if login form was not sent because if the form is sent the user was already on the page.
event_open();
}
// The header.
/*$header_title = get_lang('Homepage');
//$sitename = api_get_setting('siteName');
if (!api_get_user_id()) {
$header_title = null;
}*/
$header_title = null;
if (!api_is_anonymous()) {
$header_title = " ";
}
Display::display_header($header_title);
/* 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']) {
$access_url_id = api_get_current_access_url_id();
if ($access_url_id != -1){
$url_info = api_get_access_url($access_url_id);
$url = api_remove_trailing_slash(preg_replace('/https?:\/\//i', '', $url_info['url']));
$clean_url = replace_dangerous_char($url);
$clean_url = str_replace('/', '-', $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'])) {
$open = @(string)file_get_contents(api_get_path(SYS_PATH).$home.$_GET['include']);
$open = api_to_system_encoding($open, api_detect_encoding(strip_tags($open)));
echo $open;
$page_included = true;
} else {
if (!empty($_SESSION['user_language_choice'])) {
$user_selected_language = $_SESSION['user_language_choice'];
} elseif (!empty($_SESSION['_user']['language'])) {
$user_selected_language = $_SESSION['_user']['language'];
} else {
$user_selected_language = api_get_setting('platformLanguage');
}
if (!file_exists($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('', $home_top_temp);
} else {
if (file_exists($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');
}
}
if (trim($home_top_temp) == '' & & api_is_platform_admin()) {
$home_top_temp = get_lang('PortalHomepageDefaultIntroduction');
}
$open = str_replace('{rel_path}', api_get_path(REL_PATH), $home_top_temp);
$open = api_to_system_encoding($open, api_detect_encoding(strip_tags($open)));
echo $open;
}
// Display courses and category list.
if (!$page_included) {
// 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);
}
if (api_get_setting('display_categories_on_homepage') == 'true') {
echo '< div class = "home_cats" > ';
display_anonymous_course_list();
echo '< / div > ';
}
}
echo '< / div > ';
echo '< div id = "menu-wrapper" > ';
if (!api_is_anonymous()) {
// @todo move all this in a class/function
//Always show the user image
$img_array = UserManager::get_user_picture_path_by_id(api_get_user_id(), 'web', true, true);
$no_image = false;
if ($img_array['file'] == 'unknown.jpg') {
$no_image = true;
}
$img_array = UserManager::get_picture_user(api_get_user_id(), $img_array['file'], 50, USER_IMAGE_SIZE_MEDIUM, ' width="90" height="90" ');
$profile_content .='< div id = "social_widget" > ';
$profile_content .= '< div id = "social_widget_image" > ';
if (api_get_setting('allow_social_tool') == 'true') {
if (!$no_image) {
$profile_content .='< a href = "'.api_get_path(WEB_PATH).'main/social/home.php" > < img src = "'.$img_array['file'].'" ' . $ img_array [ ' style ' ] . ' border = "1" > < / a > ';
} else {
$profile_content .='< a href = "'.api_get_path(WEB_PATH).'main/auth/profile.php" > < img title = "'.get_lang('EditProfile').'" src = "'.$img_array['file'].'" ' . $ img_array [ ' style ' ] . ' border = "1" > < / a > ';
}
} else {
$profile_content .='< a href = "'.api_get_path(WEB_PATH).'main/auth/profile.php" > < img title = "'.get_lang('EditProfile').'" src = "'.$img_array['file'].'" ' . $ img_array [ ' style ' ] . ' border = "1" > < / a > ';
}
$profile_content .= ' < / div > < / div > ';
if (api_get_setting('allow_message_tool') == 'true') {
require_once api_get_path(LIBRARY_PATH).'message.lib.php';
require_once api_get_path(LIBRARY_PATH).'social.lib.php';
require_once api_get_path(LIBRARY_PATH).'group_portal_manager.lib.php';
// New messages.
$number_of_new_messages = MessageManager::get_new_messages();
// New contact invitations.
$number_of_new_messages_of_friend = SocialManager::get_message_number_invitation_by_user_id(api_get_user_id());
// New group invitations sent by a moderator.
$group_pending_invitations = GroupPortalManager::get_groups_by_user(api_get_user_id(), GROUP_USER_PERMISSION_PENDING_INVITATION, false);
$group_pending_invitations = count($group_pending_invitations);
$total_invitations = $number_of_new_messages_of_friend + $group_pending_invitations;
$cant_msg = '';
if ($number_of_new_messages > 0) {
$cant_msg = ' ('.$number_of_new_messages.')';
}
$profile_content .= '< div class = "clear" > < / div > ';
$profile_content .= '< div class = "message-content" > < ul class = "menulist" > ';
$link = '';
if (api_get_setting('allow_social_tool') == 'true') {
$link = '?f=social';
}
$profile_content .= '< li > < a href = "'.api_get_path(WEB_PATH).'main/messages/inbox.php'.$link.'" class = "message-body" > '.get_lang('Inbox').$cant_msg.' < / a > < / li > ';
$profile_content .= '< li > < a href = "'.api_get_path(WEB_PATH).'main/messages/new_message.php'.$link.'" class = "message-body" > '.get_lang('Compose').' < / a > < / li > ';
if (api_get_setting('allow_social_tool') == 'true') {
if ($total_invitations == 0) {
$total_invitations = '';
} else {
$total_invitations = ' ('.$total_invitations.')';
}
$profile_content .= '< li > < a href = "'.api_get_path(WEB_PATH).'main/social/invitations.php" class = "message-body" > '.get_lang('PendingInvitations').' '.$total_invitations.' < / a > < / li > ';
}
$profile_content .= '< / ul > ';
$profile_content .= '< / div > ';
}
//Profile content
echo show_right_block(get_lang('Profile'), $profile_content);
}
// Display right menu: language form, login section + useful weblinks.
display_anonymous_right_menu();
echo '< / div > ';
/* Footer */
Display :: display_footer();
/* Functions */
/**
* 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";
$q_last_connection = Database::query($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='$i_id_last_connection'";
Database::query($s_sql_update_logout_date);
}
LoginDelete($uid); // 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'";
$sql_result = Database::query($sql_query);
while ($course = Database::fetch_array($sql_result)) {
if (!$setting_show_also_closed_courses) {
if ((api_get_user_id() > 0
& & $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
|| ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD)) {
return true; //at least one open course
}
} else {
if (isset($course['visibility'])) {
return true; // At least one course (it does not matter weither it's open or not because $setting_show_also_closed_courses = true).
}
}
}
return false;
}
/**
* Display create course link
*/
function display_create_course_link() {
echo '< li > < a href = "main/create_course/add_course.php" > '.
(api_get_setting('course_validation') == 'true' ? get_lang('CreateCourseRequest') : get_lang('CourseCreate')).'< / a > < / li > ';
}
/**
* Display edit course list links
*/
function display_edit_course_list_links() {
echo '< li > < a href = "main/auth/courses.php" > '.get_lang('CourseManagement').'< / a > < / li > ';
}
/**
* Display dashboard link
*/
function display_dashboard_link() {
echo '< li > < a href = "main/dashboard/index.php" > '.get_lang('Dashboard').'< / 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, $home, $home_old;
$platformLanguage = api_get_setting('platformLanguage');
$sys_path = api_get_path(SYS_PATH);
$user_selected_language = api_get_interface_language();
echo '< div class = "menu" id = "menu" > ';
if (!($_user['user_id']) || 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' || api_get_setting('allow_registration') == 'true') {
echo '< div class = "menusection" > < span class = "menusectioncaption" > '.get_lang('MenuUser').'< / span > < ul class = "menulist" > ';
if (api_get_setting('allow_registration') != 'false') {
echo '< li > < a href = "main/auth/inscription.php" > '.get_lang('Reg').'< / a > < / li > ';
}
if (api_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) {
if (!api_is_drh() & & !api_is_session_admin()) {
display_edit_course_list_links();
} else {
display_dashboard_link();
}
}
echo '< / ul > < / div > ';
}
}
echo '< / div > ';
// Notice
$home_notice = @(string)file_get_contents($sys_path.$home.'home_notice_'.$user_selected_language.'.html');
if (empty($home_notice)) {
$home_notice = @(string)file_get_contents($sys_path.$home.'home_notice.html');
}
if (!empty($home_notice)) {
$home_notice = api_to_system_encoding($home_notice, api_detect_encoding(strip_tags($home_notice)));
echo show_right_block('', $home_notice, 'note');
}
if (isset($_SESSION['_user']['user_id']) & & $_SESSION['_user']['user_id'] != 0) {
// Deleting the myprofile link.
if (api_get_setting('allow_social_tool') == 'true') {
unset($menu_navigation['myprofile']);
}
if (!empty($menu_navigation)) {
$content = '< ul class = "menulist" > ';
foreach ($menu_navigation as $section => $navigation_info) {
$current = $section == $GLOBALS['this_section'] ? ' id="current"' : '';
$content .='< li ' . $ current . ' > < a href = "'.$navigation_info['url'].'" target = "_self" > '.$navigation_info['title'].'< / a > < / li > ';
}
$content .= '< / ul > ';
echo show_right_block(get_lang('MainNavigation'), $content);
}
}
// Help section.
/* Hide right menu "general" and other parts on anonymous right menu. */
if (!isset($user_selected_language)) {
$user_selected_language = $platformLanguage;
}
$home_menu = @(string)file_get_contents($sys_path.$home.'home_menu_'.$user_selected_language.'.html');
if (!empty($home_menu)) {
$home_menu_content .= '< ul class = "menulist" > ';
$home_menu_content .= api_to_system_encoding($home_menu, api_detect_encoding(strip_tags($home_menu)));
$home_menu_content .= '< / ul > ';
echo show_right_block(get_lang('MenuGeneral'), $home_menu_content);
}
//Plugin
if ($_user['user_id'] & & api_number_of_plugins('campushomepage_menu') > 0) {
ob_start();
api_plugin('campushomepage_menu');
$plugin_content = ob_get_contents();
ob_end_clean();
echo show_right_block('', $plugin_content);
}
}
/**
* Reacts on a failed login:
* Displays an explanation with a link to the registration form.
*
* @version 1.0.1
*/
function handle_login_failed() {
if (!isset($_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('LoginEnter'), 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();
// Initialization.
$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']) {
$url_access_id = api_get_current_access_url_id();
if ($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."'
$sql_result_courses = Database::query($sql_get_course_list);
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']) {
$url_access_id = api_get_current_access_url_id();
if ($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";
}
}
$resCats = Database::query($sqlGetSubCatList);
$thereIsSubCat = false;
if (Database::num_rows($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) {
// 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 & & $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM) || ($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 (api_get_setting('display_coursecode_in_courselist') == 'true') {
$courses_list_string .= $course['visual_code'];
}
if (api_get_setting('display_coursecode_in_courselist') == 'true' & & api_get_setting('display_teacher_in_courselist') == 'true') {
$courses_list_string .= ' - ';
}
if (api_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
|| ($user_identified & & $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
|| ($user_identified & & key_exists($course['code'], $courses_of_user) & & $course['visibility'] != COURSE_VISIBILITY_CLOSED)
|| $courses_of_user[$course['code']]['status'] == '1'
|| 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
|| ($user_identified & & $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM)
|| ($user_identified & & key_exists($course['code'], $courses_of_user) & & $course['visibility'] != COURSE_VISIBILITY_CLOSED)
|| $courses_of_user[$course['code']]['status'] == '1'
|| api_is_platform_admin()) {
$courses_list_string .= '< / a > < br / > ';
}
if (api_get_setting('display_coursecode_in_courselist') == 'true') {
$courses_list_string .= ' '.$course['visual_code'];
}
if (api_get_setting('display_coursecode_in_courselist') == 'true' & & api_get_setting('display_teacher_in_courselist') == 'true') {
$courses_list_string .= ' - ';
}
if (api_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 ($user_identified & & !key_exists($course['code'], $courses_of_user)) {
if ($course['subscribe'] == '1') {
$courses_list_string .= '< form action = "main/auth/courses.php?action=subscribe&category='.Security::remove_XSS($_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().'" > ', 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."'
AND course_rel_user.relation_type< >".COURSE_RELATION_TYPE_RRHH."
ORDER BY course_rel_user.sort ASC";
$result = Database::query($sql_select_courses);
$courses = array();
while ($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 $courses;
}
function show_right_block($title, $content, $class = '') {
$html = '';
$html.= '< div id = "menu" class = "menu" > ';
$html.= '< div class = "menusection '.$class.' " > ';
if (!empty($title)) {
$html.= '< span class = "menusectioncaption" > '.$title.'< / span > ';
}
$html.= $content;
$html.= '< / div > ';
$html.= '< / div > ';
return $html;
}
