';
}
}
$login_form_tmp = $login_form;
if ($use_template)
$this->tpl->assign('login_block', $login_form);
//@todo remove this return
return $login_form;
}
function return_announcements($show_slide = true) {
// Display System announcements
$announcement = isset($_GET['announcement']) ? $_GET['announcement'] : -1;
$announcement = intval($announcement);
if (isset($_user['user_id'])) {
$visibility = api_is_allowed_to_create_course() ? VISIBLE_TEACHER : VISIBLE_STUDENT;
if ($show_slide) {
$announcements = SystemAnnouncementManager :: display_announcements_slider($visibility, $announcement);
} else {
$announcements = SystemAnnouncementManager :: get_all_announcements($visibility, $announcement);
}
} else {
if ($show_slide) {
$announcements = SystemAnnouncementManager :: display_announcements_slider(VISIBLE_GUEST, $announcement);
} else {
$announcements = SystemAnnouncementManager :: get_all_announcements(VISIBLE_GUEST, $announcement);
}
}
return $announcements;
}
/**
* This function handles the logout and is called whenever there is a $_GET['logout']
*
* @author Patrick Cool , 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;
}
/**
* 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');
$display_add_course_link = api_is_allowed_to_create_course() && ($_SESSION['studentview'] != 'studentenview');
$current_user_id = api_get_user_id();
echo self::set_login_form(false);
echo self::return_teacher_link();
echo self::return_notice();
//Plugin
echo self::return_plugin_campushomepage();
}
function return_teacher_link() {
$html = '';
if (!empty($this->user_id)) {
// tabs that are deactivated are added here
$show_menu = false;
$show_create_link = false;
$show_course_link = false;
if ($display_add_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 && ($show_create_link || $show_course_link )) {
$show_menu = true;
} else {
$show_menu = false;
}
}
// My Account section
if ($show_menu) {
$html .= '
';
$html .= self::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.$this->home.'home_menu_'.$user_selected_language.'.html');
if (!empty($home_menu)) {
$home_menu_content .= '
';
$html .= self::show_right_block(get_lang('MenuGeneral'), $home_menu_content);
}
return $html;
}
function return_plugin_campushomepage() {
$html = '';
if (api_get_user_id() && api_number_of_plugins('campushomepage_menu') > 0) {
ob_start();
api_plugin('campushomepage_menu');
$plugin_content = ob_get_contents();
ob_end_clean();
$html = self::show_right_block('', $plugin_content);
}
return $html;
}
/**
* Reacts on a failed login:
* Displays an explanation with a link to the registration form.
*
* @version 1.0.1
*/
function handle_login_failed() {
if (!isset($_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':
$message = get_lang('AccountURLInactive');
break;
}
}
return '
'.$message.'
';
}
/**
* Display list of courses in a category.
* (for anonymous users)
*
* @version 1.1
* @author Patrick Cool , 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) {
$htmlListCat = '
'.get_lang('CatList').'
';
while ($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 .= '
\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 .= "
\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++;
$courses_list_string .= "
\n";
if ($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 .= '';
}
$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 .= ' ';
}
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 .= '';
} else {
$courses_list_string .= ' '.get_lang('SubscribingNotAllowed');
}
}
$courses_list_string .= "
\n";
}
}
$courses_list_string .= "
\n";
} else {
//echo '
', get_lang('_No_course_publicly_available'), "
\n";
}
if ($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 '
', "\n";
}
}
/**
* retrieves all the courses that the user has already subscribed to
* @author Patrick Cool , 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.= '