Amaia Anabitarte
131 lines
4.5 KiB
PHP
131 lines
4.5 KiB
PHP
<?php
|
|
// This file is part of Moodle - http://moodle.org/
|
|
//
|
|
// Moodle is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// Moodle is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License
|
|
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
namespace mod_bigbluebuttonbn;
|
|
|
|
use Exception;
|
|
use Firebase\JWT\JWT;
|
|
use Firebase\JWT\Key;
|
|
use mod_bigbluebuttonbn\local\config;
|
|
|
|
/**
|
|
* The broker routines
|
|
*
|
|
* @package mod_bigbluebuttonbn
|
|
* @copyright 2010 onwards, Blindside Networks Inc
|
|
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
|
|
* @author Jesus Federico (jesus [at] blindsidenetworks [dt] com)
|
|
*/
|
|
class broker {
|
|
|
|
/** @var array List of required params */
|
|
protected $requiredparams = [
|
|
'recording_ready' => [
|
|
'bigbluebuttonbn' => 'The BigBlueButtonBN instance ID must be specified.',
|
|
'signed_parameters' => 'A JWT encoded string must be included as [signed_parameters].'
|
|
],
|
|
'meeting_events' => [
|
|
'bigbluebuttonbn' => 'The BigBlueButtonBN instance ID must be specified.'
|
|
],
|
|
];
|
|
|
|
/**
|
|
* Validate the supplied list of parameters, providing feedback about any missing or incorrect values.
|
|
*
|
|
* @param array $params
|
|
* @return null|string
|
|
*/
|
|
public function validate_parameters(array $params): ?string {
|
|
if (!isset($params['action']) || empty($params['action']) ) {
|
|
return 'Parameter ['.$params['action'].'] was not included';
|
|
}
|
|
|
|
$action = strtolower($params['action']);
|
|
if (!array_key_exists($action, $this->requiredparams)) {
|
|
return "Action {$params['action']} can not be performed.";
|
|
}
|
|
return $this->validate_parameters_message($params, $this->requiredparams[$action]);
|
|
}
|
|
|
|
/**
|
|
* Check whether the specified parameter is valid.
|
|
*
|
|
* @param array $params
|
|
* @param array $requiredparams
|
|
* @return null|string
|
|
*/
|
|
protected static function validate_parameters_message(array $params, array $requiredparams): ?string {
|
|
foreach ($requiredparams as $param => $message) {
|
|
if (!array_key_exists($param, $params) || $params[$param] == '') {
|
|
return $message;
|
|
}
|
|
}
|
|
|
|
// Everything is valid.
|
|
return null;
|
|
}
|
|
|
|
/**
|
|
* Helper for responding when recording ready is performed.
|
|
*
|
|
* @param instance $instance
|
|
* @param array $params
|
|
*/
|
|
public static function recording_ready(instance $instance, array $params): void {
|
|
// Decodes the received JWT string.
|
|
try {
|
|
$decodedparameters = JWT::decode(
|
|
$params['signed_parameters'],
|
|
new Key(config::get('shared_secret'), 'HS256')
|
|
);
|
|
} catch (Exception $e) {
|
|
$error = 'Caught exception: ' . $e->getMessage();
|
|
header('HTTP/1.0 400 Bad Request. ' . $error);
|
|
return;
|
|
}
|
|
|
|
// Validations.
|
|
if (!isset($decodedparameters->record_id)) {
|
|
header('HTTP/1.0 400 Bad request. Missing record_id parameter');
|
|
return;
|
|
}
|
|
|
|
$recording = recording::get_record(['recordingid' => $decodedparameters->record_id]);
|
|
if (!isset($recording)) {
|
|
header('HTTP/1.0 400 Bad request. Invalid record_id');
|
|
return;
|
|
}
|
|
|
|
// Sends the messages.
|
|
try {
|
|
// We make sure messages are sent only once.
|
|
if ($recording->get('status') != recording::RECORDING_STATUS_NOTIFIED) {
|
|
$task = new \mod_bigbluebuttonbn\task\send_recording_ready_notification();
|
|
$task->set_instance_id($instance->get_instance_id());
|
|
|
|
\core\task\manager::queue_adhoc_task($task);
|
|
|
|
$recording->set('status', recording::RECORDING_STATUS_NOTIFIED);
|
|
$recording->update();
|
|
}
|
|
header('HTTP/1.0 202 Accepted');
|
|
} catch (Exception $e) {
|
|
$error = 'Caught exception: ' . $e->getMessage();
|
|
header('HTTP/1.0 503 Service Unavailable. ' . $error);
|
|
}
|
|
}
|
|
}
|