PHP api_is_anonymous函数代码示例

/**
 * @param int $userId
 */
function preventMultipleLogin($userId)
{
    $table = Database::get_main_table(TABLE_STATISTIC_TRACK_E_ONLINE);
    $userId = intval($userId);
    if (api_get_settings('prevent_multiple_simultaneous_login') === 'true') {
        if (!empty($userId) && !api_is_anonymous()) {
            $isFirstLogin = Session::read('first_user_login');
            if (empty($isFirstLogin)) {
                $sql = "SELECT login_id FROM {$table}\n                        WHERE login_user_id = " . $userId . " LIMIT 1";
                $result = Database::query($sql);
                $loginData = array();
                if (Database::num_rows($result)) {
                    $loginData = Database::fetch_array($result);
                }
                $userIsReallyOnline = user_is_online($userId);
                // Trying double login.
                if (!empty($loginData) && $userIsReallyOnline == true) {
                    session_regenerate_id();
                    Session::destroy();
                    header('Location: ' . api_get_path(WEB_PATH) . 'index.php?loginFailed=1&error=multiple_connection_not_allowed');
                    exit;
                } else {
                    // First time
                    Session::write('first_user_login', 1);
                }
            }
        }
    }
}

 /**
  * True if portfolios are enabled. False otherwise.
  * 
  * @return boolean 
  */
 public static function is_enabled()
 {
     if (api_is_anonymous()) {
         return false;
     }
     $user_id = api_get_user_id();
     if (empty($user_id)) {
         return false;
     }
     $portfolios = self::all();
     if (count($portfolios) == 0) {
         return false;
     }
     return true;
 }

 /**
  *
  * @return string
  */
 public function indexAction(Application $app, $id)
 {
     $actions = null;
     if (api_is_platform_admin()) {
         $actions = '<a href="' . api_get_path(WEB_PATH) . 'main/admin/system_announcements.php">' . \Display::return_icon('edit.png', get_lang('EditSystemAnnouncement'), array(), 32) . '</a>';
     }
     if (api_is_anonymous()) {
         $visibility = \SystemAnnouncementManager::VISIBLE_GUEST;
     } else {
         $visibility = api_is_allowed_to_create_course() ? \SystemAnnouncementManager::VISIBLE_TEACHER : \SystemAnnouncementManager::VISIBLE_STUDENT;
     }
     $content = \SystemAnnouncementManager::display_announcements_slider($visibility, $id);
     $app['template']->assign('content', $content);
     $app['template']->assign('actions', $actions);
     $response = $app['template']->renderLayout('layout_1_col.tpl');
     return new Response($response, 200, array());
 }

 private function get_announcements($username, $course_code, $announcement_id = 0)
 {
     $session_id = api_get_session_id();
     $condition_session = api_get_session_condition($session_id);
     $announcement_id = $announcement_id == 0 ? "" : "AND announcement.id=" . $announcement_id;
     $user_id = UserManager::get_user_id_from_username($username);
     //$listOfCourses = CourseManager::get_course_information_by_id($course_id);
     $course_info = CourseManager::get_course_information($course_code);
     $course_db = $course_info['db_name'];
     $tbl_item_property = Database::get_course_table(TABLE_ITEM_PROPERTY, $course_db);
     $tbl_announcement = Database::get_course_table(TABLE_ANNOUNCEMENT, $course_db);
     $maximum = '12';
     $group_memberships = GroupManager::get_group_ids($course_info['real_id'], $user_id);
     if (api_get_group_id() == 0) {
         $cond_user_id = " AND ( ip.to_user_id='" . $user_id . "'" . "OR ip.to_group_id IN (0, " . implode(", ", $group_memberships) . ")) ";
     } else {
         $cond_user_id = " AND ( ip.to_user_id='" . $user_id . "'" . "OR ip.to_group_id IN (0, " . api_get_group_id() . ")) ";
     }
     // the user is member of several groups => display personal announcements AND his group announcements AND the general announcements
     if (is_array($group_memberships) && count($group_memberships) > 0) {
         $sql = "SELECT\n                            announcement.*, ip.visibility, ip.to_group_id, ip.insert_user_id\n                            FROM {$tbl_announcement} announcement, {$tbl_item_property} ip\n                            WHERE announcement.id = ip.ref\n                            AND ip.tool='announcement'\n                            AND ip.visibility='1'\n                            {$announcement_id}\n                            {$cond_user_id}\n                            {$condition_session}\n                            GROUP BY ip.ref\n                            ORDER BY display_order DESC\n                            LIMIT 0,{$maximum}";
     } else {
         // the user is not member of any group
         // this is an identified user => show the general announcements AND his personal announcements
         if ($user_id) {
             if (api_get_course_setting('allow_user_edit_announcement') && !api_is_anonymous()) {
                 $cond_user_id = " AND (ip.lastedit_user_id = '" . api_get_user_id() . "' OR ( ip.to_user_id='" . $user_id . "' OR ip.to_group_id='0')) ";
             } else {
                 $cond_user_id = " AND ( ip.to_user_id='" . $user_id . "' OR ip.to_group_id='0') ";
             }
             $sql = "SELECT\n                                    announcement.*, ip.visibility, ip.to_group_id, ip.insert_user_id\n                                    FROM {$tbl_announcement} announcement, {$tbl_item_property} ip\n                                    WHERE announcement.id = ip.ref\n                                    AND ip.tool='announcement'\n                                    AND ip.visibility='1'\n                                    {$announcement_id}\n                                    {$cond_user_id}\n                                    {$condition_session}\n                                    GROUP BY ip.ref\n                                    ORDER BY display_order DESC\n                                    LIMIT 0,{$maximum}";
         } else {
             if (api_get_course_setting('allow_user_edit_announcement')) {
                 $cond_user_id = " AND (ip.lastedit_user_id = '" . api_get_user_id() . "' OR ip.to_group_id='0') ";
             } else {
                 $cond_user_id = " AND ip.to_group_id='0' ";
             }
             // the user is not identiefied => show only the general announcements
             $sql = "SELECT\n                                    announcement.*, ip.visibility, ip.to_group_id, ip.insert_user_id\n                                    FROM {$tbl_announcement} announcement, {$tbl_item_property} ip\n                                    WHERE announcement.id = ip.ref\n                                    AND ip.tool='announcement'\n                                    AND ip.visibility='1'\n                                    AND ip.to_group_id='0'\n                                    {$announcement_id}\n                                    {$condition_session}\n                                    GROUP BY ip.ref\n                                    ORDER BY display_order DESC\n                                    LIMIT 0,{$maximum}";
         }
     }
     $result = Database::query($sql);
     return $result;
 }

<?php

// Show the CAS button to login using CAS
require_once api_get_path(SYS_PATH) . 'main/auth/cas/authcas.php';
$_template['show_message'] = false;
if (api_is_anonymous()) {
    $_template['cas_activated'] = api_is_cas_activated();
    $_template['cas_configured'] = cas_configured();
    $_template['show_message'] = true;
    // the default title
    $button_label = "Connexion via CAS";
    if (!empty($plugin_info['settings']['add_cas_login_button_cas_button_label'])) {
        $button_label = api_htmlentities($plugin_info['settings']['add_cas_login_button_cas_button_label']);
    }
    // the comm
    $comm_label = api_htmlentities($plugin_info['settings']['add_cas_login_button_cas_button_comment']);
    // URL of the image
    $url_label = $plugin_info['settings']['add_cas_login_button_cas_image_url'];
    $_template['button_label'] = $button_label;
    $_template['comm_label'] = $comm_label;
    $_template['url_label'] = $url_label;
}

    static function display_notes()
    {

        global $_user;
        if (!$_GET['direction']) {
            $sort_direction = 'ASC';
            $link_sort_direction = 'DESC';
        } elseif ($_GET['direction'] == 'ASC') {
            $sort_direction = 'ASC';
            $link_sort_direction = 'DESC';
        } else {
            $sort_direction = 'DESC';
            $link_sort_direction = 'ASC';
        }

        // action links
        echo '<div class="actions">';
        if (!api_is_anonymous()) {
            if (api_get_session_id() == 0)
                echo '<a href="index.php?' . api_get_cidreq() . '&amp;action=addnote">' . Display::return_icon('new_note.png', get_lang('NoteAddNew'), '', '32') . '</a>';
            elseif (api_is_allowed_to_session_edit(false, true)) {
                echo '<a href="index.php?' . api_get_cidreq() . '&amp;action=addnote">' . Display::return_icon('new_note.png', get_lang('NoteAddNew'), '', '32') . '</a>';
            }
        } else {
            echo '<a href="javascript:void(0)">' . Display::return_icon('new_note.png', get_lang('NoteAddNew'), '', '32') . '</a>';
        }

        echo '<a href="index.php?' . api_get_cidreq() . '&amp;action=changeview&amp;view=creation_date&amp;direction=' . $link_sort_direction . '">' . Display::return_icon('notes_order_by_date_new.png', get_lang('OrderByCreationDate'), '', '32') . '</a>';
        echo '<a href="index.php?' . api_get_cidreq() . '&amp;action=changeview&amp;view=update_date&amp;direction=' . $link_sort_direction . '">' . Display::return_icon('notes_order_by_date_mod.png', get_lang('OrderByModificationDate'), '', '32') . '</a>';
        echo '<a href="index.php?' . api_get_cidreq() . '&amp;action=changeview&amp;view=title&amp;direction=' . $link_sort_direction . '">' . Display::return_icon('notes_order_by_title.png', get_lang('OrderByTitle'), '', '32') . '</a>';
        echo '</div>';

        if (!in_array($_SESSION['notebook_view'], array('creation_date', 'update_date', 'title'))) {
            $_SESSION['notebook_view'] = 'creation_date';
        }

        // Database table definition
        $t_notebook = Database :: get_course_table(TABLE_NOTEBOOK);
        $order_by = "";
        if ($_SESSION['notebook_view'] == 'creation_date' || $_SESSION['notebook_view'] == 'update_date') {
            $order_by = " ORDER BY " . $_SESSION['notebook_view'] . " $sort_direction ";
        } else {
            $order_by = " ORDER BY " . $_SESSION['notebook_view'] . " $sort_direction ";
        }

        //condition for the session
        $session_id = api_get_session_id();
        $condition_session = api_get_session_condition($session_id);

        $cond_extra = ($_SESSION['notebook_view'] == 'update_date') ? " AND update_date <> '0000-00-00 00:00:00'" : " ";
        $course_id = api_get_course_int_id();

        $sql = "SELECT * FROM $t_notebook WHERE c_id = $course_id AND user_id = '" . api_get_user_id() . "' $condition_session $cond_extra $order_by";
        $result = Database::query($sql);
        while ($row = Database::fetch_array($result)) {
            //validacion when belongs to a session
            $session_img = api_get_session_image($row['session_id'], $_user['status']);
            $creation_date = api_get_local_time($row['creation_date'], null, date_default_timezone_get());
            $update_date = api_get_local_time($row['update_date'], null, date_default_timezone_get());
            echo '<div class="sectiontitle">';
            echo '<span style="float: right;"> (' . get_lang('CreationDate') . ': ' . date_to_str_ago($creation_date) . '&nbsp;&nbsp;<span class="dropbox_date">' . $creation_date . '</span>';
            if ($row['update_date'] <> $row['creation_date']) {
                echo ', ' . get_lang('UpdateDate') . ': ' . date_to_str_ago($update_date) . '&nbsp;&nbsp;<span class="dropbox_date">' . $update_date . '</span>';
            }
            echo ')</span>';
            echo $row['title'] . $session_img;
            echo '</div>';
            echo '<div class="sectioncomment">' . $row['description'] . '</div>';
            echo '<div>';
            echo '<a href="' . api_get_self() . '?action=editnote&amp;notebook_id=' . $row['notebook_id'] . '">' . Display::return_icon('edit.png', get_lang('Edit'), '', ICON_SIZE_SMALL) . '</a>';
            echo '<a href="' . api_get_self() . '?action=deletenote&amp;notebook_id=' . $row['notebook_id'] . '" onclick="return confirmation(\'' . $row['title'] . '\');">' . Display::return_icon('delete.png', get_lang('Delete'), '', ICON_SIZE_SMALL) . '</a>';
            echo '</div>';
        }
    }

             $my_file_comment = Database::escape_string($_REQUEST['file_comment']);
             store_edited_agenda_item($my_id_attach, $my_file_comment);
             display_agenda_items();
         } else {
             $id = (int) $_GET['id'];
             show_add_form($id);
         }
     } else {
         display_agenda_items();
     }
     break;
 case "delete":
     $id = (int) $_GET['id'];
     if (!(api_is_course_coach() && !api_is_element_in_the_session(TOOL_AGENDA, $id))) {
         // a coach can only delete an element belonging to his session
         if (api_is_allowed_to_edit() && !api_is_anonymous()) {
             if (!empty($id)) {
                 $res_del = delete_agenda_item($id);
                 if ($res_del) {
                     Display::display_normal_message(get_lang("AgendaDeleteSuccess"));
                 }
             }
         }
     }
     display_agenda_items();
     break;
 case "showhide":
     $id = (int) $_GET['id'];
     if (!(api_is_course_coach() && !api_is_element_in_the_session(TOOL_AGENDA, $id))) {
         // a coach can only delete an element belonging to his session
         showhide_agenda_item($id);

                    } else {
                        echo '<a href="' . api_get_self() . '?' . api_get_cidreq() . '&amp;forum=' . Security::remove_XSS($my_forum) . '&amp;action=delete&amp;content=thread&id=' . $row['thread_id'] . $origin_string . "\" onclick=\"javascript:if(!confirm('" . addslashes(api_htmlentities(get_lang('DeleteCompleteThread'), ENT_QUOTES)) . "')) return false;\">" . Display::return_icon('delete.png', get_lang('Delete'), array(), ICON_SIZE_SMALL) . '</a>';
                    }
                    display_visible_invisible_icon('thread', $row['thread_id'], $row['visibility'], array('forum' => $my_forum, 'origin' => $origin, 'gidReq' => $groupId));
                    display_lock_unlock_icon('thread', $row['thread_id'], $row['locked'], array('forum' => $my_forum, 'origin' => $origin, 'gidReq' => api_get_group_id()));
                    echo '<a href="viewforum.php?' . api_get_cidreq() . '&amp;forum=' . Security::remove_XSS($my_forum) . '&amp;action=move&thread=' . $row['thread_id'] . $origin_string . '">' . Display::return_icon('move.png', get_lang('MoveThread'), array(), ICON_SIZE_SMALL) . '</a>';
                }
            }
            $iconnotify = 'send_mail.gif';
            if (is_array(isset($_SESSION['forum_notification']['thread']) ? $_SESSION['forum_notification']['thread'] : null)) {
                if (in_array($row['thread_id'], $_SESSION['forum_notification']['thread'])) {
                    $iconnotify = 'send_mail_checked.gif';
                }
            }
            $icon_liststd = 'user.png';
            if (!api_is_anonymous() && api_is_allowed_to_session_edit(false, true)) {
                echo '<a href="' . api_get_self() . '?' . api_get_cidreq() . '&amp;forum=' . Security::remove_XSS($my_forum) . '&amp;origin=' . $origin . '&amp;action=notify&amp;content=thread&id=' . $row['thread_id'] . '">' . Display::return_icon($iconnotify, get_lang('NotifyMe')) . '</a>';
            }
            if (api_is_allowed_to_edit(null, true) && $origin != 'learnpath') {
                echo '<a href="' . api_get_self() . '?' . api_get_cidreq() . '&amp;forum=' . Security::remove_XSS($my_forum) . '&amp;origin=' . $origin . '&amp;action=liststd&amp;content=thread&id=' . $row['thread_id'] . '">' . Display::return_icon($icon_liststd, get_lang('StudentList'), array(), ICON_SIZE_SMALL) . '</a>';
            }
            echo '</td></tr>';
        }
        $counter++;
    }
}
echo '</table>';
echo isset($table_list) ? $table_list : '';
/* FOOTER */
if ($origin != 'learnpath') {
    Display::display_footer();

                echo '</td>';
                echo '<td class="td_actions">';
                if (api_is_allowed_to_edit(false, true) && !($forum['session_id'] == 0 && intval(isset($_SESSION['id_session']) ? $_SESSION['id_session'] : null) != 0)) {
                    echo '<a href="' . api_get_self() . '?' . api_get_cidreq() . '&amp;forumcategory=' . Security::remove_XSS($_GET['forumcategory']) . '&amp;action=edit&amp;content=forum&amp;id=' . $forum['forum_id'] . '">' . Display::return_icon('edit.png', get_lang('Edit'), array(), ICON_SIZE_SMALL) . '</a>';
                    echo '<a href="' . api_get_self() . '?' . api_get_cidreq() . '&amp;forumcategory=' . Security::remove_XSS($_GET['forumcategory']) . '&amp;action=delete&amp;content=forum&amp;id=' . $forum['forum_id'] . "\" onclick=\"javascript:if(!confirm('" . addslashes(api_htmlentities(get_lang('DeleteForum'), ENT_QUOTES)) . "')) return false;\">" . Display::return_icon('delete.png', get_lang('Delete'), array(), ICON_SIZE_SMALL) . '</a>';
                    display_visible_invisible_icon('forum', $forum['forum_id'], $forum['visibility'], array('forumcategory' => $_GET['forumcategory']));
                    display_lock_unlock_icon('forum', $forum['forum_id'], $forum['locked'], array('forumcategory' => $_GET['forumcategory']));
                    display_up_down_icon('forum', $forum['forum_id'], $forums_in_category);
                }
                $iconnotify = 'send_mail.gif';
                if (is_array(isset($_SESSION['forum_notification']['forum']) ? $_SESSION['forum_notification']['forum'] : null)) {
                    if (in_array($forum['forum_id'], $_SESSION['forum_notification']['forum'])) {
                        $iconnotify = 'send_mail_checked.gif';
                    }
                }
                if (!api_is_anonymous()) {
                    echo '<a href="' . api_get_self() . '?' . api_get_cidreq() . '&amp;forumcategory=' . Security::remove_XSS($_GET['forumcategory']) . '&amp;action=notify&amp;content=forum&amp;id=' . $forum['forum_id'] . '">' . Display::return_icon($iconnotify, get_lang('NotifyMe')) . '</a>';
                }
                echo '</td></tr>';
            }
        }
    }
    if (count($forum_list) == 0) {
        echo '<tr><td>' . get_lang('NoForumInThisCategory') . '</td></tr>';
    }
    echo '</table>';
}
/* FOOTER */
if ($origin != 'learnpath') {
    Display::display_footer();
}

/**
 * Get the users to display on the current page.
 */
function get_user_data($from, $number_of_items, $column, $direction)
{
    global $origin;
    global $course_info;
    global $is_western_name_order;
    global $session_id;
    $a_users = array();
    // limit
    $limit = 'LIMIT ' . intval($from) . ',' . intval($number_of_items);
    if (!in_array($direction, array('ASC', 'DESC'))) {
        $direction = 'ASC';
    }
    switch ($column) {
        case 2:
            //official code
            $order_by = 'ORDER BY user.official_code ' . $direction;
            break;
        case 3:
            if ($is_western_name_order) {
                $order_by = 'ORDER BY user.firstname ' . $direction . ', user.lastname ' . $direction;
            } else {
                $order_by = 'ORDER BY user.lastname ' . $direction . ', user.firstname ' . $direction;
            }
            break;
        case 4:
            if ($is_western_name_order) {
                $order_by = 'ORDER BY user.lastname ' . $direction . ', user.firstname ' . $direction;
            } else {
                $order_by = 'ORDER BY user.firstname ' . $direction . ', user.lastname ' . $direction;
            }
            break;
        case 5:
            //username
            $order_by = 'ORDER BY user.username ' . $direction;
            break;
        default:
            if ($is_western_name_order) {
                $order_by = 'ORDER BY user.lastname ' . $direction . ', user.firstname ' . $direction;
            } else {
                $order_by = 'ORDER BY user.firstname ' . $direction . ', user.lastname ' . $direction;
            }
            break;
    }
    $session_id = api_get_session_id();
    $course_code = api_get_course_id();
    $keyword = isset($_REQUEST['keyword']) ? $_REQUEST['keyword'] : null;
    $a_course_users = CourseManager::get_user_list_from_course_code($course_code, $session_id, $limit, $order_by, null, $keyword);
    foreach ($a_course_users as $user_id => $o_course_user) {
        $groups_name = GroupManager::get_user_group_name($user_id);
        $temp = array();
        if (api_is_allowed_to_edit(null, true)) {
            //if (api_get_setting('allow_user_course_subscription_by_course_admin') == 'true') {
            $temp[] = $user_id;
            //}
            $image_path = UserManager::get_user_picture_path_by_id($user_id, 'web', false, true);
            $user_profile = UserManager::get_picture_user($user_id, $image_path['file'], 22, USER_IMAGE_SIZE_SMALL, ' width="22" height="22" ');
            if (!api_is_anonymous()) {
                $photo = '<a href="userInfo.php?' . api_get_cidreq() . '&origin=' . $origin . '&amp;uInfo=' . $user_id . '" title="' . get_lang('Info') . '"  ><img src="' . $user_profile['file'] . '" ' . $user_profile['style'] . ' alt="' . api_get_person_name($o_course_user['firstname'], $o_course_user['lastname']) . '"  title="' . api_get_person_name($o_course_user['firstname'], $o_course_user['lastname']) . '" /></a>';
            } else {
                $photo = '<img src="' . $user_profile['file'] . '" ' . $user_profile['style'] . ' alt="' . api_get_person_name($o_course_user['firstname'], $o_course_user['lastname']) . '" title="' . api_get_person_name($o_course_user['firstname'], $o_course_user['lastname']) . '" />';
            }
            $temp[] = $photo;
            $temp[] = $o_course_user['official_code'];
            if ($is_western_name_order) {
                $temp[] = $o_course_user['firstname'];
                $temp[] = $o_course_user['lastname'];
            } else {
                $temp[] = $o_course_user['lastname'];
                $temp[] = $o_course_user['firstname'];
            }
            $temp[] = $o_course_user['username'];
            $temp[] = isset($o_course_user['role']) ? $o_course_user['role'] : null;
            //Description
            $temp[] = implode(', ', $groups_name);
            //Group
            // Status
            $default_status = '-';
            if (isset($o_course_user['status_rel']) && $o_course_user['status_rel'] == 1 || isset($o_course_user['status_session']) && $o_course_user['status_session'] == 2) {
                $default_status = get_lang('CourseManager');
            } elseif (isset($o_course_user['tutor_id']) && $o_course_user['tutor_id'] == 1) {
                $default_status = get_lang('Tutor');
            }
            $temp[] = $default_status;
            //Active
            $temp[] = $o_course_user['active'];
            //User id for actions
            $temp[] = $user_id;
        } else {
            $image_path = UserManager::get_user_picture_path_by_id($user_id, 'web', false, true);
            $image_repository = $image_path['dir'];
            $existing_image = $image_path['file'];
            if (!api_is_anonymous()) {
                $photo = '<a href="userInfo.php?' . api_get_cidreq() . '&origin=' . $origin . '&amp;uInfo=' . $user_id . '" title="' . get_lang('Info') . '"  ><img src="' . $image_repository . $existing_image . '" alt="' . api_get_person_name($o_course_user['firstname'], $o_course_user['lastname']) . '"  width="22" height="22" title="' . api_get_person_name($o_course_user['firstname'], $o_course_user['lastname']) . '" /></a>';
            } else {
                $photo = '<img src="' . $image_repository . $existing_image . '" alt="' . api_get_person_name($o_course_user['firstname'], $o_course_user['lastname']) . '"  width="22" height="22" title="' . api_get_person_name($o_course_user['firstname'], $o_course_user['lastname']) . '" />';
            }
            $temp[] = $user_id;
//.........这里部分代码省略.........

 /**
  * Return a link to go to the course, validating the visibility of the
  * course and the user status
  * @param int User ID
  * @param array Course details array
  * @param array  List of courses to which the user is subscribed (if not provided, will be generated)
  * @return mixed 'enter' for a link to go to the course or 'register' for a link to subscribe, or false if no access
  */
 static function get_access_link_by_user($uid, $course, $user_courses = array())
 {
     if (empty($uid) or empty($course)) {
         return false;
     }
     if (empty($user_courses)) {
         // get the array of courses to which the user is subscribed
         $user_courses = CourseManager::get_courses_list_by_user_id($uid);
         foreach ($user_courses as $k => $v) {
             $user_courses[$k] = $v['real_id'];
         }
     }
     if (!isset($course['real_id']) && empty($course['real_id'])) {
         $course = api_get_course_info($course['code']);
     }
     if ($course['visibility'] == COURSE_VISIBILITY_HIDDEN) {
         return array();
     }
     $is_admin = api_is_platform_admin_by_id($uid);
     $options = array();
     // Register button
     if (!api_is_anonymous($uid) && ($course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD || $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM) && $course['subscribe'] == SUBSCRIBE_ALLOWED && (!in_array($course['real_id'], $user_courses) || empty($user_courses))) {
         $options[] = 'register';
     }
     // Go To Course button (only if admin, if course public or if student already subscribed)
     if ($is_admin || $course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD && empty($course['registration_code']) || api_user_is_login($uid) && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM && empty($course['registration_code']) || in_array($course['real_id'], $user_courses) && $course['visibility'] != COURSE_VISIBILITY_CLOSED) {
         $options[] = 'enter';
     }
     if ($is_admin || $course['visibility'] == COURSE_VISIBILITY_OPEN_WORLD && empty($course['registration_code']) || api_user_is_login($uid) && $course['visibility'] == COURSE_VISIBILITY_OPEN_PLATFORM && empty($course['registration_code']) || in_array($course['real_id'], $user_courses) && $course['visibility'] != COURSE_VISIBILITY_CLOSED) {
         $options[] = 'enter';
     }
     if ($course['visibility'] != COURSE_VISIBILITY_HIDDEN && empty($course['registration_code']) && $course['unsubscribe'] == UNSUBSCRIBE_ALLOWED && api_user_is_login($uid) && in_array($course['real_id'], $user_courses)) {
         $options[] = 'unsubscribe';
     }
     return $options;
 }

/**
 * Check whether the user type should be exclude.
 * Such as invited or anonymous users
 * @param boolean $checkDB Optional. Whether check the user status
 * @param int $userId Options. The user id
 *
 * @return boolean
 */
function api_is_excluded_user_type($checkDB = false, $userId = 0)
{
    if ($checkDB) {
        $userId = empty($userId) ? api_get_user_id() : intval($userId);
        if ($userId == 0) {
            return true;
        }
        $userInfo = api_get_user_info($userId);
        switch ($userInfo['status']) {
            case INVITEE:
                //no break;
            //no break;
            case ANONYMOUS:
                return true;
            default:
                return false;
        }
    }
    $isInvited = api_is_invitee();
    $isAnonymous = api_is_anonymous();
    if ($isInvited || $isAnonymous) {
        return true;
    }
    return false;
}

/**
 * @param string $message
 * @param array $_course
 * @param int $group_id
 * @param int $session_id
 * @param bool $preview
 */
function saveMessage($message, $userId, $_course, $session_id, $group_id, $preview = true)
{
    $userInfo = api_get_user_info($userId);
    $fullName = $userInfo['complete_name'];
    $isMaster = (bool) api_is_course_admin();
    $document_path = api_get_path(SYS_COURSE_PATH) . $_course['path'] . '/document';
    if (!empty($group_id)) {
        $group_info = GroupManager::get_group_properties($group_id);
        $basepath_chat = $group_info['directory'] . '/chat_files';
    } else {
        $basepath_chat = '/chat_files';
    }
    $chat_path = $document_path . $basepath_chat . '/';
    if (!is_dir($chat_path)) {
        if (is_file($chat_path)) {
            @unlink($chat_path);
        }
    }
    $date_now = date('Y-m-d');
    $message = trim($message);
    $timeNow = date('d/m/y H:i:s');
    if (!empty($group_id)) {
        $basename_chat = 'messages-' . $date_now . '_gid-' . $group_id;
    } elseif (!empty($session_id)) {
        $basename_chat = 'messages-' . $date_now . '_sid-' . $session_id;
    } else {
        $basename_chat = 'messages-' . $date_now;
    }
    if (!api_is_anonymous()) {
        if (!empty($message)) {
            Emojione\Emojione::$imagePathPNG = api_get_path(WEB_LIBRARY_PATH) . 'javascript/emojione/png/';
            Emojione\Emojione::$ascii = true;
            // Parsing emojis
            $message = Emojione\Emojione::toImage($message);
            // Parsing text to understand markdown (code highlight)
            $message = MarkdownExtra::defaultTransform($message);
            // Security XSS
            $message = Security::remove_XSS($message);
            if ($preview == true) {
                return $message;
            }
            if (!file_exists($chat_path . $basename_chat . '.log.html')) {
                $doc_id = add_document($_course, $basepath_chat . '/' . $basename_chat . '.log.html', 'file', 0, $basename_chat . '.log.html');
                api_item_property_update($_course, TOOL_DOCUMENT, $doc_id, 'DocumentAdded', $userId, $group_id, null, null, null, $session_id);
                api_item_property_update($_course, TOOL_DOCUMENT, $doc_id, 'invisible', $userId, $group_id, null, null, null, $session_id);
                item_property_update_on_folder($_course, $basepath_chat, $userId);
            } else {
                $doc_id = DocumentManager::get_document_id($_course, $basepath_chat . '/' . $basename_chat . '.log.html');
            }
            $fp = fopen($chat_path . $basename_chat . '.log.html', 'a');
            $userPhoto = Usermanager::getUserPicture($userId, USER_IMAGE_SIZE_MEDIUM);
            $filePhoto = '<img class="chat-image" src="' . $userPhoto . '"/>';
            if ($isMaster) {
                fputs($fp, '<div class="message-teacher"><div class="content-message"><div class="chat-message-block-name">' . $fullName . '</div><div class="chat-message-block-content">' . $message . '</div><div class="message-date">' . $timeNow . '</div></div><div class="icon-message"></div>' . $filePhoto . '</div>' . "\n");
            } else {
                fputs($fp, '<div class="message-student">' . $filePhoto . '<div class="icon-message"></div><div class="content-message"><div class="chat-message-block-name">' . $fullName . '</div><div class="chat-message-block-content">' . $message . '</div><div class="message-date">' . $timeNow . '</div></div></div>' . "\n");
            }
            fclose($fp);
            $chat_size = filesize($chat_path . $basename_chat . '.log.html');
            update_existing_document($_course, $doc_id, $chat_size);
            item_property_update_on_folder($_course, $basepath_chat, $userId);
        }
    }
}

         } else {
             require 'downloadfolder.inc.php';
         }
         // Launch event
         Event::event_download($document_data['url']);
         exit;
     }
     break;
 case 'export_to_pdf':
     if (api_get_setting('students_export2pdf') == 'true' || api_is_allowed_to_edit() || api_is_platform_admin()) {
         DocumentManager::export_to_pdf($document_id, $course_code);
     }
     break;
 case 'copytomyfiles':
     // Copy a file to general my files user's
     if (api_get_setting('social.allow_social_tool') == 'true' && api_get_setting('document.users_copy_files') == 'true' && api_get_user_id() != 0 && !api_is_anonymous()) {
         // Get the document data from the ID
         $document_info = DocumentManager::get_document_data_by_id($document_id, api_get_course_id(), true, $sessionId);
         if ($sessionId != 0 && !$document_info) {
             /* If there is a session defined and asking for the document
                  from the session didn't work, try it from the course
                (out of a session context)*/
             $document_info = DocumentManager::get_document_data_by_id($document_id, api_get_course_id(), 0);
         }
         $parent_id = $document_info['parent_id'];
         $my_path = UserManager::getUserPathById(api_get_user_id(), 'system');
         $user_folder = $my_path . 'my_files/';
         $my_path = null;
         if (!file_exists($user_folder)) {
             $perm = api_get_permissions_for_new_directories();
             @mkdir($user_folder, $perm, true);

<?php

// Show the CAS button to logout to your CAS session
global $_user;
$_template['show_message'] = false;
if (!api_is_anonymous() && api_get_setting('cas_activate') == 'true' && $_user['auth_source'] == CAS_AUTH_SOURCE) {
    $_template['show_message'] = true;
    // the default title
    $logout_label = "Deconnexion de CAS";
    if (!empty($plugin_info['settings']['add_cas_logout_button_cas_logout_label'])) {
        $logout_label = api_htmlentities($plugin_info['settings']['add_cas_logout_button_cas_logout_label']);
    }
    // the comm
    $logout_comment = api_htmlentities($plugin_info['settings']['add_cas_logout_button_cas_logout_comment']);
    // URL of the image
    $logout_image_url = $plugin_info['settings']['add_cas_logout_button_cas_logout_image_url'];
    $_template['logout_label'] = $logout_label;
    $_template['logout_comment'] = $logout_comment;
    $_template['logout_image_url'] = $logout_image_url;
}