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                <?php  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // This file is part of Moodle - http://moodle.org/  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                //  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Moodle is free software: you can redistribute it and/or modify  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // it under the terms of the GNU General Public License as published by  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // the Free Software Foundation, either version 3 of the License, or  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // (at your option) any later version.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                //  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // Moodle is distributed in the hope that it will be useful,  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // but WITHOUT ANY WARRANTY; without even the implied warranty of  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // GNU General Public License for more details.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                //  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // You should have received a copy of the GNU General Public License  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * The mod_bigbluebuttonbn locallib/notifier.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @package   mod_bigbluebuttonbn  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @copyright 2017 - present, Blindside Networks Inc  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @author    Jesus Federico  (jesus [at] blindsidenetworks [dt] com)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace mod_bigbluebuttonbn\locallib;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                defined('MOODLE_INTERNAL') || die(); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                require_once($CFG->dirroot . '/mod/bigbluebuttonbn/locallib.php');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Helper class for sending notifications.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @copyright 2010 onwards, Blindside Networks Inc  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @license   http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                class notifier { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Starts the notification process.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param object $context  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param object $bigbluebuttonbn  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $action  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function notification_process($context, $bigbluebuttonbn, $action) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        global $USER;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // Prepare message.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $msg = (object) array();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // Build the message_body.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $msg->action = $action;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $msg->activity_type = '';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $msg->activity_title = $bigbluebuttonbn->name;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // Add the meeting details to the message_body.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $msg->action = ucfirst($action);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $msg->activity_description = '';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (!empty($bigbluebuttonbn->intro)) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $msg->activity_description = trim($bigbluebuttonbn->intro);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $msg->activity_openingtime = bigbluebuttonbn_format_activity_time($bigbluebuttonbn->openingtime);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $msg->activity_closingtime = bigbluebuttonbn_format_activity_time($bigbluebuttonbn->closingtime);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $msg->activity_owner = fullname($USER);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // Send notification to all users enrolled.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        self::notification_send($context, $USER, $bigbluebuttonbn, self::notification_msg_html($msg));  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Prepares html message body.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param object $msg  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    public static function notification_msg_html($msg) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $messagetext = '<p>'.$msg->activity_type.' "'.$msg->activity_title.'" '.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            get_string('email_body_notification_meeting_has_been', 'bigbluebuttonbn').' '.$msg->action.'.</p>'."\n"; | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $messagetext .= '<p><b>'.$msg->activity_title.'</b> '.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            get_string('email_body_notification_meeting_details', 'bigbluebuttonbn').':'."\n"; | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $messagetext .= '<table border="0" style="margin: 5px 0 0 20px"><tbody>'."\n";  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $messagetext .= '<tr><td style="font-weight:bold;color:#555;">'.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            get_string('email_body_notification_meeting_title', 'bigbluebuttonbn').': </td><td>'."\n"; | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $messagetext .= $msg->activity_title.'</td></tr>'."\n";  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $messagetext .= '<tr><td style="font-weight:bold;color:#555;">'.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            get_string('email_body_notification_meeting_description', 'bigbluebuttonbn').': </td><td>'."\n"; | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $messagetext .= $msg->activity_description.'</td></tr>'."\n";  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $messagetext .= '<tr><td style="font-weight:bold;color:#555;">'.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            get_string('email_body_notification_meeting_start_date', 'bigbluebuttonbn').': </td><td>'."\n"; | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $messagetext .= $msg->activity_openingtime.'</td></tr>'."\n";  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $messagetext .= '<tr><td style="font-weight:bold;color:#555;">'.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            get_string('email_body_notification_meeting_end_date', 'bigbluebuttonbn').': </td><td>'."\n"; | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $messagetext .= $msg->activity_closingtime.'</td></tr>'."\n";  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $messagetext .= '<tr><td style="font-weight:bold;color:#555;">'.$msg->action.' '.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                            get_string('email_body_notification_meeting_by', 'bigbluebuttonbn').': </td><td>'."\n"; | 
            
            
                                                                        
                            
            
                                    
            
            
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                        $messagetext .= $msg->activity_owner.'</td></tr></tbody></table></p>'."\n";  | 
            
            
                                                                        
                            
            
                                    
            
            
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                        return $messagetext;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Sends the message.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param object $context  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param object $sender  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param object $bigbluebuttonbn  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $message  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return void  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function notification_send($context, $sender, $bigbluebuttonbn, $message = '') { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        global $DB;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $course = $DB->get_record('course', array('id' => $bigbluebuttonbn->course), '*', MUST_EXIST); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // Complete message.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $msg = (object) array();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $msg->user_name = fullname($sender);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $msg->user_email = $sender->email;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $msg->course_name = $course->fullname;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $message .= '<p><hr/><br/>'.get_string('email_footer_sent_by', 'bigbluebuttonbn').' '. | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $msg->user_name.'('.$msg->user_email.') '; | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $message .= get_string('email_footer_sent_from', 'bigbluebuttonbn').' '.$msg->course_name.'.</p>'; | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        // Process the message sending.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        foreach (self::users_to_notify($context, $instance) as $user) { | 
            
                            
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                            if ($user->id != $sender->id) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                message_post_message($sender, $user, $message, FORMAT_HTML);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    125
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                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    126
                 | 
                                    
                                                     | 
                
                 | 
                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    127
                 | 
                                    
                                                     | 
                
                 | 
                     * Define users to be notified.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    128
                 | 
                                    
                                                     | 
                
                 | 
                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    129
                 | 
                                    
                                                     | 
                
                 | 
                     * @param object $context  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    130
                 | 
                                    
                                                     | 
                
                 | 
                     * @param object $course  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    131
                 | 
                                    
                                                     | 
                
                 | 
                     * @return array  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    132
                 | 
                                    
                                                     | 
                
                 | 
                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    133
                 | 
                                    
                                                     | 
                
                 | 
                    public static function users_to_notify($context, $course) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    134
                 | 
                                    
                                                     | 
                
                 | 
                        $users = (array) get_enrolled_users($context, '', 0, 'u.*', null, 0, 0, true);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    135
                 | 
                                    
                                                     | 
                
                 | 
                        $modinfo = get_fast_modinfo($course);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    136
                 | 
                                    
                                                     | 
                
                 | 
                        $coursemodule = $modinfo->get_cm($context->instanceid);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    137
                 | 
                                    
                                                     | 
                
                 | 
                        $info = new \core_availability\info_module($coursemodule);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    138
                 | 
                                    
                                                     | 
                
                 | 
                        $filtered = $info->filter_user_list($users);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    139
                 | 
                                    
                                                     | 
                
                 | 
                        return $filtered;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    140
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    141
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    142
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                        
This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.