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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/bigbluebutton.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * @package   mod_bigbluebuttonbn  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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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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                 * @author    Jesus Federico  (jesus [at] blindsidenetworks [dt] com)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                namespace mod_bigbluebuttonbn\locallib;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                use context_module;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                defined('MOODLE_INTERNAL') || die(); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                global $CFG;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                require_once($CFG->dirroot . '/mod/bigbluebuttonbn/locallib.php');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                 * Wrapper for executing http requests on a BigBlueButton server.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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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 bigbluebutton { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Returns the right URL for the action specified.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param string $action  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array  $data  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param array  $metadata  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function action_url($action = '', $data = array(), $metadata = array()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $baseurl = self::sanitized_url() . $action . '?';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $metadata = array_combine(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            array_map(  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                function($k) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                    return 'meta_' . $k;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                                , array_keys($metadata)  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            ),  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $metadata  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        );  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $params = http_build_query($data + $metadata, '', '&');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $baseurl . $params . '&checksum=' . sha1($action . $params . self::sanitized_secret());  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Makes sure the url used doesn't is in the format required.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function sanitized_url() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $serverurl = trim(config::get('server_url')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (substr($serverurl, -1) == '/') { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $serverurl = rtrim($serverurl, '/');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (substr($serverurl, -4) == '/api') { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $serverurl = rtrim($serverurl, '/api');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $serverurl . '/api/';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Makes sure the shared_secret used doesn't have trailing white characters.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function sanitized_secret() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return trim(config::get('shared_secret')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Returns the BigBlueButton server root URL.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return string  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function root() { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $pserverurl = parse_url(trim(config::get('server_url'))); | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $pserverurlport = "";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        if (isset($pserverurl['port'])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                            $pserverurlport = ":" . $pserverurl['port'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return $pserverurl['scheme'] . "://" . $pserverurl['host'] . $pserverurlport . "/";  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * Get BBB session information from viewinstance  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param object $viewinstance  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return mixed  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \coding_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \dml_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \moodle_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \require_login_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \required_capability_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    public static function build_bbb_session_fromviewinstance($viewinstance) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $cm = $viewinstance['cm'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $course = $viewinstance['course'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        $bigbluebuttonbn = $viewinstance['bigbluebuttonbn'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                        return self::build_bbb_session($cm, $course, $bigbluebuttonbn);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                    123
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                     * Get BBB session from parameters  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param \course_modinfo $cm  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param object $course  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @param object $bigbluebuttonbn  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @return mixed  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \coding_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \dml_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \moodle_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \require_login_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
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                     * @throws \required_capability_exception  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
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                    134
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                     */  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    135
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                 | 
                    public static function build_bbb_session($cm, $course, $bigbluebuttonbn) { | 
            
            
                                                                        
                            
            
                                    
            
            
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                    136
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                 | 
                        global $CFG;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    137
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                 | 
                        $context = context_module::instance($cm->id);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    138
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                 | 
                        require_login($course->id, false, $cm, true, true);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    139
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                        require_capability('mod/bigbluebuttonbn:join', $context); | 
            
            
                                                                        
                            
            
                                    
            
            
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                    140
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                    141
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                        // Add view event.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    142
                 | 
                                    
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                 | 
                        bigbluebuttonbn_event_log(\mod_bigbluebuttonbn\event\events::$events['view'], $bigbluebuttonbn);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    143
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                    144
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                 | 
                        // Create array bbbsession with configuration for BBB server.  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    145
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                 | 
                        $bbbsession['course'] = $course;  | 
            
                            
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                    146
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                        $bbbsession['coursename'] = $course->fullname;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    147
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                 | 
                        $bbbsession['cm'] = $cm;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    148
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                        $bbbsession['bigbluebuttonbn'] = $bigbluebuttonbn;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    149
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                 | 
                        self::view_bbbsession_set($context, $bbbsession);  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    150
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                    151
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                        $serverversion = bigbluebuttonbn_get_server_version();  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    152
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                        $bbbsession['serverversion'] = (string) $serverversion;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    153
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                    154
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                        // Operation URLs.  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    155
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                                                     | 
                
                 | 
                        $bbbsession['bigbluebuttonbnURL'] = $CFG->wwwroot . '/mod/bigbluebuttonbn/view.php?id=' . $cm->id;  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    156
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                 | 
                        $bbbsession['logoutURL'] = $CFG->wwwroot . '/mod/bigbluebuttonbn/bbb_view.php?action=logout&id=' . $cm->id .  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    157
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                 | 
                            '&bn=' . $bbbsession['bigbluebuttonbn']->id;  | 
            
            
                                                                        
                            
            
                                    
            
            
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                    158
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                 | 
                        $bbbsession['recordingReadyURL'] = $CFG->wwwroot . '/mod/bigbluebuttonbn/bbb_broker.php?action=recording_' .  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    159
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                 | 
                            'ready&bigbluebuttonbn=' . $bbbsession['bigbluebuttonbn']->id;  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    160
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                                                     | 
                
                 | 
                        $bbbsession['meetingEventsURL'] = $CFG->wwwroot . '/mod/bigbluebuttonbn/bbb_broker.php?action=meeting' .  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    161
                 | 
                                    
                                                     | 
                
                 | 
                            '_events&bigbluebuttonbn=' . $bbbsession['bigbluebuttonbn']->id;  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    162
                 | 
                                    
                                                     | 
                
                 | 
                        $bbbsession['joinURL'] = $CFG->wwwroot . '/mod/bigbluebuttonbn/bbb_view.php?action=join&id=' . $cm->id .  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    163
                 | 
                                    
                                                     | 
                
                 | 
                            '&bn=' . $bbbsession['bigbluebuttonbn']->id;  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    164
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                | 
                    165
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                                                     | 
                
                 | 
                        return $bbbsession;  | 
            
            
                                                                        
                            
            
                                    
            
            
                | 
                    166
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    167
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                | 
                    168
                 | 
                                    
                                                     | 
                
                 | 
                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    169
                 | 
                                    
                                                     | 
                
                 | 
                     * Build standard array with configurations required for BBB server.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    170
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                 | 
                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    171
                 | 
                                    
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                 | 
                     * @param \context $context  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    172
                 | 
                                    
                                                     | 
                
                 | 
                     * @param array $session  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    173
                 | 
                                    
                                                     | 
                
                 | 
                     * @throws \coding_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    174
                 | 
                                    
                                                     | 
                
                 | 
                     * @throws \dml_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    175
                 | 
                                    
                                                     | 
                
                 | 
                     */  | 
            
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
                | 
                    176
                 | 
                                    
                                                     | 
                
                View Code Duplication | 
                    public static function view_bbbsession_set($context, &$session) { | 
            
                            
                    | 
                        
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                    177
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                | 
                    178
                 | 
                                    
                                                     | 
                
                 | 
                        global $CFG, $USER;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    179
                 | 
                                    
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                | 
                    180
                 | 
                                    
                                                     | 
                
                 | 
                        $session['username'] = fullname($USER);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    181
                 | 
                                    
                                                     | 
                
                 | 
                        $session['userID'] = $USER->id;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    182
                 | 
                                    
                                                     | 
                
                 | 
                        $session['administrator'] = is_siteadmin($session['userID']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    183
                 | 
                                    
                                                     | 
                
                 | 
                        $participantlist = bigbluebuttonbn_get_participant_list($session['bigbluebuttonbn'], $context);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    184
                 | 
                                    
                                                     | 
                
                 | 
                        $session['moderator'] = bigbluebuttonbn_is_moderator($context, $participantlist);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    185
                 | 
                                    
                                                     | 
                
                 | 
                        $session['managerecordings'] = ($session['administrator']  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    186
                 | 
                                    
                                                     | 
                
                 | 
                            || has_capability('mod/bigbluebuttonbn:managerecordings', $context)); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    187
                 | 
                                    
                                                     | 
                
                 | 
                        $session['importrecordings'] = ($session['managerecordings']);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    188
                 | 
                                    
                                                     | 
                
                 | 
                        $session['modPW'] = $session['bigbluebuttonbn']->moderatorpass;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    189
                 | 
                                    
                                                     | 
                
                 | 
                        $session['viewerPW'] = $session['bigbluebuttonbn']->viewerpass;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    190
                 | 
                                    
                                                     | 
                
                 | 
                        $session['meetingid'] = $session['bigbluebuttonbn']->meetingid.'-'.$session['course']->id.'-'.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    191
                 | 
                                    
                                                     | 
                
                 | 
                            $session['bigbluebuttonbn']->id;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    192
                 | 
                                    
                                                     | 
                
                 | 
                        $session['meetingname'] = $session['bigbluebuttonbn']->name;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    193
                 | 
                                    
                                                     | 
                
                 | 
                        $session['meetingdescription'] = $session['bigbluebuttonbn']->intro;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    194
                 | 
                                    
                                                     | 
                
                 | 
                        $session['userlimit'] = intval((int) config::get('userlimit_default')); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    195
                 | 
                                    
                                                     | 
                
                 | 
                        if ((boolean) config::get('userlimit_editable')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    196
                 | 
                                    
                                                     | 
                
                 | 
                            $session['userlimit'] = intval($session['bigbluebuttonbn']->userlimit);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    197
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    198
                 | 
                                    
                                                     | 
                
                 | 
                        $session['voicebridge'] = $session['bigbluebuttonbn']->voicebridge;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    199
                 | 
                                    
                                                     | 
                
                 | 
                        if ($session['bigbluebuttonbn']->voicebridge > 0) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    200
                 | 
                                    
                                                     | 
                
                 | 
                            $session['voicebridge'] = 70000 + $session['bigbluebuttonbn']->voicebridge;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    201
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    202
                 | 
                                    
                                                     | 
                
                 | 
                        $session['wait'] = $session['bigbluebuttonbn']->wait;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    203
                 | 
                                    
                                                     | 
                
                 | 
                        $session['record'] = $session['bigbluebuttonbn']->record;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    204
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    205
                 | 
                                    
                                                     | 
                
                 | 
                        $session['recordallfromstart'] = $CFG->bigbluebuttonbn_recording_all_from_start_default;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    206
                 | 
                                    
                                                     | 
                
                 | 
                        if ($CFG->bigbluebuttonbn_recording_all_from_start_editable) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    207
                 | 
                                    
                                                     | 
                
                 | 
                            $session['recordallfromstart'] = $session['bigbluebuttonbn']->recordallfromstart;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    208
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    209
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    210
                 | 
                                    
                                                     | 
                
                 | 
                        $session['recordhidebutton'] = $CFG->bigbluebuttonbn_recording_hide_button_default;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    211
                 | 
                                    
                                                     | 
                
                 | 
                        if ($CFG->bigbluebuttonbn_recording_hide_button_editable) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    212
                 | 
                                    
                                                     | 
                
                 | 
                            $session['recordhidebutton'] = $session['bigbluebuttonbn']->recordhidebutton;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    213
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    214
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    215
                 | 
                                    
                                                     | 
                
                 | 
                        $session['welcome'] = $session['bigbluebuttonbn']->welcome;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    216
                 | 
                                    
                                                     | 
                
                 | 
                        if (!isset($session['welcome']) || $session['welcome'] == '') { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    217
                 | 
                                    
                                                     | 
                
                 | 
                            $session['welcome'] = get_string('mod_form_field_welcome_default', 'bigbluebuttonbn'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    218
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    219
                 | 
                                    
                                                     | 
                
                 | 
                        if ($session['bigbluebuttonbn']->record) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    220
                 | 
                                    
                                                     | 
                
                 | 
                            // Check if is enable record all from start.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    221
                 | 
                                    
                                                     | 
                
                 | 
                            if ($session['recordallfromstart']) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    222
                 | 
                                    
                                                     | 
                
                 | 
                                $session['welcome'] .= '<br><br>'.get_string('bbbrecordallfromstartwarning', | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    223
                 | 
                                    
                                                     | 
                
                 | 
                                        'bigbluebuttonbn');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    224
                 | 
                                    
                                                     | 
                
                 | 
                            } else { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    225
                 | 
                                    
                                                     | 
                
                 | 
                                $session['welcome'] .= '<br><br>'.get_string('bbbrecordwarning', 'bigbluebuttonbn'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    226
                 | 
                                    
                                                     | 
                
                 | 
                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    227
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    228
                 | 
                                    
                                                     | 
                
                 | 
                        $session['openingtime'] = $session['bigbluebuttonbn']->openingtime;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    229
                 | 
                                    
                                                     | 
                
                 | 
                        $session['closingtime'] = $session['bigbluebuttonbn']->closingtime;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    230
                 | 
                                    
                                                     | 
                
                 | 
                        $session['muteonstart'] = $session['bigbluebuttonbn']->muteonstart;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    231
                 | 
                                    
                                                     | 
                
                 | 
                        $session['context'] = $context;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    232
                 | 
                                    
                                                     | 
                
                 | 
                        $session['origin'] = 'Moodle';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    233
                 | 
                                    
                                                     | 
                
                 | 
                        $session['originVersion'] = $CFG->release;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    234
                 | 
                                    
                                                     | 
                
                 | 
                        $parsedurl = parse_url($CFG->wwwroot);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    235
                 | 
                                    
                                                     | 
                
                 | 
                        $session['originServerName'] = $parsedurl['host'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    236
                 | 
                                    
                                                     | 
                
                 | 
                        $session['originServerUrl'] = $CFG->wwwroot;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    237
                 | 
                                    
                                                     | 
                
                 | 
                        $session['originServerCommonName'] = '';  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    238
                 | 
                                    
                                                     | 
                
                 | 
                        $session['originTag'] = 'moodle-mod_bigbluebuttonbn ('.get_config('mod_bigbluebuttonbn', 'version').')'; | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    239
                 | 
                                    
                                                     | 
                
                 | 
                        $session['bnserver'] = bigbluebuttonbn_is_bn_server();  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    240
                 | 
                                    
                                                     | 
                
                 | 
                        $session['clienttype'] = config::get('clienttype_default'); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    241
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    242
                 | 
                                    
                                                     | 
                
                 | 
                        if (config::get('clienttype_editable')) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    243
                 | 
                                    
                                                     | 
                
                 | 
                            $session['clienttype'] = $session['bigbluebuttonbn']->clienttype;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    244
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    245
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    246
                 | 
                                    
                                                     | 
                
                 | 
                        if (!config::clienttype_enabled()) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    247
                 | 
                                    
                                                     | 
                
                 | 
                            $session['clienttype'] = BIGBLUEBUTTON_CLIENTTYPE_FLASH;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    248
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    249
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    250
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    251
                 | 
                                    
                                                     | 
                
                 | 
                    /**  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    252
                 | 
                                    
                                                     | 
                
                 | 
                     * Can join meeting.  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    253
                 | 
                                    
                                                     | 
                
                 | 
                     *  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    254
                 | 
                                    
                                                     | 
                
                 | 
                     * @param int $cmid  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    255
                 | 
                                    
                                                     | 
                
                 | 
                     * @return array|bool[]  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    256
                 | 
                                    
                                                     | 
                
                 | 
                     * @throws \coding_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    257
                 | 
                                    
                                                     | 
                
                 | 
                     * @throws \dml_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    258
                 | 
                                    
                                                     | 
                
                 | 
                     * @throws \moodle_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    259
                 | 
                                    
                                                     | 
                
                 | 
                     * @throws \require_login_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    260
                 | 
                                    
                                                     | 
                
                 | 
                     * @throws \required_capability_exception  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    261
                 | 
                                    
                                                     | 
                
                 | 
                     */  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    262
                 | 
                                    
                                                     | 
                
                 | 
                    public static function can_join_meeting($cmid) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    263
                 | 
                                    
                                                     | 
                
                 | 
                        global $CFG;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    264
                 | 
                                    
                                                     | 
                
                 | 
                        $canjoin = array('can_join' => false, 'message' => ''); | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    265
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    266
                 | 
                                    
                                                     | 
                
                 | 
                        $viewinstance = bigbluebuttonbn_view_validator($cmid, null);  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    267
                 | 
                                    
                                                     | 
                
                 | 
                        if ($viewinstance) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    268
                 | 
                                    
                                                     | 
                
                 | 
                            $bbbsession = self::build_bbb_session_fromviewinstance($viewinstance);  | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    269
                 | 
                                    
                                                     | 
                
                 | 
                            if ($bbbsession) { | 
            
                            
                    | 
                        
                     | 
                     | 
                     | 
                    
                                                                                                    
                        
                         
                                                                                        
                                                                                     
                     | 
                
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    270
                 | 
                                    
                                                     | 
                
                 | 
                                require_once($CFG->dirroot . "/mod/bigbluebuttonbn/brokerlib.php");  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    271
                 | 
                                    
                                                     | 
                
                 | 
                                $info = bigbluebuttonbn_get_meeting_info($bbbsession['meetingid'], false);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    272
                 | 
                                    
                                                     | 
                
                 | 
                                $running = false;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    273
                 | 
                                    
                                                     | 
                
                 | 
                                if ($info['returncode'] == 'SUCCESS') { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    274
                 | 
                                    
                                                     | 
                
                 | 
                                    $running = ($info['running'] === 'true');  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    275
                 | 
                                    
                                                     | 
                
                 | 
                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    276
                 | 
                                    
                                                     | 
                
                 | 
                                $participantcount = 0;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    277
                 | 
                                    
                                                     | 
                
                 | 
                                if (isset($info['participantCount'])) { | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    278
                 | 
                                    
                                                     | 
                
                 | 
                                    $participantcount = $info['participantCount'];  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    279
                 | 
                                    
                                                     | 
                
                 | 
                                }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    280
                 | 
                                    
                                                     | 
                
                 | 
                                $canjoin = bigbluebuttonbn_broker_meeting_info_can_join($bbbsession, $running, $participantcount);  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    281
                 | 
                                    
                                                     | 
                
                 | 
                            }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    282
                 | 
                                    
                                                     | 
                
                 | 
                        }  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    283
                 | 
                                    
                                                     | 
                
                 | 
                        return $canjoin;  | 
            
            
                                                                                                            
                            
            
                                    
            
            
                | 
                    284
                 | 
                                    
                                                     | 
                
                 | 
                    }  | 
            
            
                                                                                                            
                                                                
            
                                    
            
            
                | 
                    285
                 | 
                                    
                                                     | 
                
                 | 
                }  | 
            
            
                                                        
            
                                    
            
            
                | 
                    286
                 | 
                                    
                                                     | 
                
                 | 
                 | 
            
            
                        
Adding an explicit array definition is generally preferable to implicit array definition as it guarantees a stable state of the code.
Let’s take a look at an example:
As you can see in this example, the array
$myArrayis initialized the first time when the foreach loop is entered. You can also see that the value of thebarkey is only written conditionally; thus, its value might result from a previous iteration.This might or might not be intended. To make your intention clear, your code more readible and to avoid accidental bugs, we recommend to add an explicit initialization $myArray = array() either outside or inside the foreach loop.