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<?php
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/**
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* This script initiates a videoconference session, calling the BigBlueButton
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* API
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* @package chamilo.plugin.bigbluebutton
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*/
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/**
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* BigBlueButton-Chamilo connector class
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*/
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class bbb {
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var $url;
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var $salt;
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var $api;
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var $user_complete_name = null;
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var $protocol = 'http://';
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var $debug = false;
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var $logout_url = null;
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var $plugin_enabled = false;
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/**
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* Constructor (generates a connection to the API and the Chamilo settings
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* required for the connection to the videoconference server)
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*/
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function __construct() {
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// initialize video server settings from global settings
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$plugin = BBBPlugin::create();
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$bbb_plugin = $plugin->get('tool_enable');
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$bbb_host = $plugin->get('host');
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$bbb_salt = $plugin->get('salt');
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//$course_code = api_get_course_id();
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$this->logout_url = api_get_path(WEB_PLUGIN_PATH).'bbb/listing.php';
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$this->table = Database::get_main_table('plugin_bbb_meeting');
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if ($bbb_plugin == true) {
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$user_info = api_get_user_info();
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$this->user_complete_name = $user_info['complete_name'];
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$this->salt = $bbb_salt;
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$info = parse_url($bbb_host);
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$this->url = $bbb_host.'/bigbluebutton/';
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if (isset($info['scheme'])) {
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$this->protocol = $info['scheme'].'://';
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$this->url = str_replace($this->protocol, '', $this->url);
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}
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// Setting BBB api
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define('CONFIG_SECURITY_SALT', $this->salt);
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define('CONFIG_SERVER_BASE_URL', $this->url);
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$this->api = new BigBlueButtonBN();
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$this->plugin_enabled = true;
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}
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}
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/**
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* Checks whether a user is teacher in the current course
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* @return bool True if the user can be considered a teacher in this course, false otherwise
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*/
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function is_teacher() {
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return api_is_course_admin() || api_is_coach() || api_is_platform_admin();
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}
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/*
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* See this file in you BBB to set up default values
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/var/lib/tomcat6/webapps/bigbluebutton/WEB-INF/classes/bigbluebutton.properties
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*
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More record information:
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http://code.google.com/p/bigbluebutton/wiki/RecordPlaybackSpecification
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# Default maximum number of users a meeting can have.
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# Doesn't get enforced yet but is the default value when the create
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# API doesn't pass a value.
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defaultMaxUsers=20
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# Default duration of the meeting in minutes.
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# Current default is 0 (meeting doesn't end).
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defaultMeetingDuration=0
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# Remove the meeting from memory when the end API is called.
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# This allows 3rd-party apps to recycle the meeting right-away
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# instead of waiting for the meeting to expire (see below).
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removeMeetingWhenEnded=false
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# The number of minutes before the system removes the meeting from memory.
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defaultMeetingExpireDuration=1
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# The number of minutes the system waits when a meeting is created and when
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# a user joins. If after this period, a user hasn't joined, the meeting is
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# removed from memory.
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defaultMeetingCreateJoinDuration=5
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*
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*/
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function create_meeting($params) {
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$params['c_id'] = api_get_course_int_id();
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$course_code = api_get_course_id();
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$attende_password = $params['attendee_pw'] = isset($params['moderator_pw']) ? $params['moderator_pw'] : api_get_course_id();
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$moderator_password = $params['moderator_pw'] = isset($params['moderator_pw']) ? $params['moderator_pw'] : $this->get_mod_meeting_password();
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$params['record'] = api_get_course_setting('big_blue_button_record_and_store', $course_code) == 1 ? true : false;
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$max = api_get_course_setting('big_blue_button_max_students_allowed', $course_code);
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$max = isset($max) ? $max : -1;
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$params['status'] = 1;
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if ($this->debug) error_log("enter create_meeting ".print_r($params, 1));
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$params['created_at'] = api_get_utc_datetime();
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$id = Database::insert($this->table, $params);
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if ($id) {
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if ($this->debug) error_log("create_meeting: $id ");
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$meeting_name = isset($params['meeting_name']) ? $params['meeting_name'] : api_get_course_id();
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$welcome_msg = isset($params['welcome_msg']) ? $params['welcome_msg'] : null;
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$record = isset($params['record']) && $params['record'] ? 'true' : 'false';
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$duration = isset($params['duration']) ? intval($params['duration']) : 0;
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$duration = 30;
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$bbb_params = array(
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'meetingId' => $id, // REQUIRED
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'meetingName' => $meeting_name, // REQUIRED
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'attendeePw' => $attende_password, // Match this value in getJoinMeetingURL() to join as attendee.
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'moderatorPw' => $moderator_password, // Match this value in getJoinMeetingURL() to join as moderator.
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'welcomeMsg' => $welcome_msg, // ''= use default. Change to customize.
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'dialNumber' => '', // The main number to call into. Optional.
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'voiceBridge' => '12345', // PIN to join voice. Required.
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'webVoice' => '', // Alphanumeric to join voice. Optional.
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'logoutUrl' => $this->logout_url,
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'maxParticipants' => $max, // Optional. -1 = unlimitted. Not supported in BBB. [number]
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'record' => $record, // New. 'true' will tell BBB to record the meeting.
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'duration' => $duration, // Default = 0 which means no set duration in minutes. [number]
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//'meta_category' => '', // Use to pass additional info to BBB server. See API docs.
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);
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if ($this->debug) error_log("create_meeting params: ".print_r($bbb_params,1));
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$result = $this->api->createMeetingWithXmlResponseArray($bbb_params);
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if (isset($result) && (string)$result['returncode'] == 'SUCCESS') {
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if ($this->debug) error_log("create_meeting result: ".print_r($result,1));
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return $this->join_meeting($meeting_name);
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}
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return $this->logout;
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}
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}
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/**
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* Tells whether the given meeting exists and is running
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* (using course code as name)
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* @param string Meeting name (usually the course code)
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* @return bool True if meeting exists, false otherwise
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* @assert ('') === false
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* @assert ('abcdefghijklmnopqrstuvwxyzabcdefghijklmno') === false
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*/
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function meeting_exists($meeting_name) {
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if (empty($meeting_name)) { return false; }
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$course_id = api_get_course_int_id();
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$meeting_data = Database::select('*', $this->table, array('where' => array('c_id = ? AND meeting_name = ? AND status = 1 ' => array($course_id, $meeting_name))), 'first');
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if ($this->debug) error_log("meeting_exists ".print_r($meeting_data,1));
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if (empty($meeting_data)) {
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return false;
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} else {
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return true;
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}
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}
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/**
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* Returns a meeting "join" URL
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* @param string The name of the meeting (usually the course code)
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* @return mixed The URL to join the meeting, or false on error
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* @todo implement moderator pass
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* @assert ('') === false
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* @assert ('abcdefghijklmnopqrstuvwxyzabcdefghijklmno') === false
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*/
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function join_meeting($meeting_name) {
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if (empty($meeting_name)) { return false; }
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$pass = $this->get_user_meeting_password();
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$meeting_data = Database::select('*', $this->table, array('where' => array('meeting_name = ? AND status = 1 ' => $meeting_name)), 'first');
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if (empty($meeting_data)) {
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if ($this->debug) error_log("meeting does not exist: $meeting_name ");
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return false;
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}
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$meeting_is_running_info = $this->api->isMeetingRunningWithXmlResponseArray($meeting_data['id']);
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$meeting_is_running = $meeting_is_running_info['running'] == 'true' ? true : false;
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if ($this->debug) error_log("meeting is running: ".$meeting_is_running);
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$params = array(
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'meetingId' => $meeting_data['id'], // -- REQUIRED - The unique id for the meeting
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'password' => $this->get_mod_meeting_password() // -- REQUIRED - The moderator password for the meeting
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);
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$meeting_info_exists = $this->get_meeting_info($params);
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if (isset($meeting_is_running) && $meeting_info_exists) {
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$joinParams = array(
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'meetingId' => $meeting_data['id'], // -- REQUIRED - A unique id for the meeting
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'username' => $this->user_complete_name, //-- REQUIRED - The name that will display for the user in the meeting
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'password' => $pass, //-- REQUIRED - The attendee or moderator password, depending on what's passed here
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//'createTime' => api_get_utc_datetime(), //-- OPTIONAL - string. Leave blank ('') unless you set this correctly.
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'userID' => api_get_user_id(), //-- OPTIONAL - string
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'webVoiceConf' => '' // -- OPTIONAL - string
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);
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$url = $this->api->getJoinMeetingURL($joinParams);
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$url = $this->protocol.$url;
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} else {
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$url = $this->logout_url;
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}
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if ($this->debug) error_log("return url :".$url);
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return $url;
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}
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/**
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* Get information about the given meeting
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* @param array ...?
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* @return mixed Array of information on success, false on error
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* @assert (array()) === false
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*/
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function get_meeting_info($params) {
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try {
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$result = $this->api->getMeetingInfoWithXmlResponseArray($params);
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if ($result == null) {
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if ($this->debug) error_log("Failed to get any response. Maybe we can't contact the BBB server.");
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} else {
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return $result;
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}
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} catch (Exception $e) {
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if ($this->debug) error_log('Caught exception: ', $e->getMessage(), "\n");
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}
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return false;
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}
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/**
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* Gets all the course meetings saved in the plugin_bbb_meeting table
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* @return array Array of current open meeting rooms
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*/
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function get_course_meetings() {
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$pass = $this->get_user_meeting_password();
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$meeting_list = Database::select('*', $this->table, array('where' => array('c_id = ? ' => api_get_course_int_id())));
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$new_meeting_list = array();
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$item = array();
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foreach ($meeting_list as $meeting_db) {
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$meeting_bbb = $this->get_meeting_info(array('meetingId' => $meeting_db['id'], 'password' => $pass));
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$meeting_bbb['end_url'] = api_get_self().'?action=end&id='.$meeting_db['id'];
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if ((string)$meeting_bbb['returncode'] == 'FAILED') {
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if ($meeting_db['status'] == 1 && $this->is_teacher()) {
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$this->end_meeting($meeting_db['id']);
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}
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} else {
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$meeting_bbb['add_to_calendar_url'] = api_get_self().'?action=add_to_calendar&id='.$meeting_db['id'].'&start='.api_strtotime($meeting_db['created_at']);
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}
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$record_array = array();
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if ($meeting_db['record'] == 1) {
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$recordingParams = array(
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'meetingId' => $meeting_db['id'], //-- OPTIONAL - comma separate if multiple ids
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);
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//To see the recording list in your BBB server do: bbb-record --list
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$records = $this->api->getRecordingsWithXmlResponseArray($recordingParams);
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if (!empty($records)) {
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$count = 1;
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if (isset($records['message']) && !empty($records['message'])) {
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if ($records['messageKey'] == 'noRecordings') {
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$record_array[] = get_lang('NoRecording');
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} else {
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//$record_array[] = $records['message'];
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}
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} else {
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foreach ($records as $record) {
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if (is_array($record) && isset($record['recordId'])) {
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$url = Display::url(get_lang('ViewRecord'), $record['playbackFormatUrl'], array('target' => '_blank'));
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if ($this->is_teacher()) {
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$url .= Display::url(Display::return_icon('link.gif',get_lang('CopyToLinkTool')), api_get_self().'?action=copy_record_to_link_tool&id='.$meeting_db['id'].'&record_id='.$record['recordId']);
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$url .= Display::url(Display::return_icon('agenda.png',get_lang('AddToCalendar')), api_get_self().'?action=add_to_calendar&id='.$meeting_db['id'].'&start='.api_strtotime($meeting_db['created_at']).'&url='.$record['playbackFormatUrl']);
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$url .= Display::url(Display::return_icon('delete.png',get_lang('Delete')), api_get_self().'?action=delete_record&id='.$record['recordId']);
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}
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//$url .= api_get_self().'?action=publish&id='.$record['recordID'];
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$count++;
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$record_array[] = $url;
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} else {
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/*if (is_array($record) && isset($record['recordID']) && isset($record['playbacks'])) {
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//Fix the bbb timestamp
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//$record['startTime'] = substr($record['startTime'], 0, strlen($record['startTime']) -3);
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//$record['endTime'] = substr($record['endTime'], 0, strlen($record['endTime']) -3);
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//.' - '.api_convert_and_format_date($record['startTime']).' - '.api_convert_and_format_date($record['endTime'])
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foreach($record['playbacks'] as $item) {
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$url = Display::url(get_lang('ViewRecord'), $item['url'], array('target' => '_blank'));
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//$url .= Display::url(get_lang('DeleteRecord'), api_get_self().'?action=delete_record&'.$record['recordID']);
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if ($this->is_teacher()) {
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$url .= Display::url(Display::return_icon('link.gif',get_lang('CopyToLinkTool')), api_get_self().'?action=copy_record_to_link_tool&id='.$meeting_db['id'].'&record_id='.$record['recordID']);
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$url .= Display::url(Display::return_icon('agenda.png',get_lang('AddToCalendar')), api_get_self().'?action=add_to_calendar&id='.$meeting_db['id'].'&start='.api_strtotime($meeting_db['created_at']).'&url='.$item['url']);
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$url .= Display::url(Display::return_icon('delete.png',get_lang('Delete')), api_get_self().'?action=delete_record&id='.$record['recordID']);
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}
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//$url .= api_get_self().'?action=publish&id='.$record['recordID'];
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$count++;
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$record_array[] = $url;
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}
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}*/
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}
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}
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}
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}
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//var_dump($record_array);
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$item['show_links'] = implode('<br />', $record_array);
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}
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$item['created_at'] = api_convert_and_format_date($meeting_db['created_at']);
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//created_at
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$item['publish_url'] = api_get_self().'?action=publish&id='.$meeting_db['id'];
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$item['unpublish_url'] = api_get_self().'?action=unpublish&id='.$meeting_db['id'];
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|
|
if ($meeting_db['status'] == 1) {
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|
$joinParams = array(
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'meetingId' => $meeting_db['id'], //-- REQUIRED - A unique id for the meeting
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|
'username' => $this->user_complete_name, //-- REQUIRED - The name that will display for the user in the meeting
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|
|
'password' => $pass, //-- REQUIRED - The attendee or moderator password, depending on what's passed here
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|
'createTime' => '', //-- OPTIONAL - string. Leave blank ('') unless you set this correctly.
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|
|
'userID' => '', // -- OPTIONAL - string
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|
|
'webVoiceConf' => '' // -- OPTIONAL - string
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|
|
);
|
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|
|
$item['go_url'] = $this->protocol.$this->api->getJoinMeetingURL($joinParams);
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|
|
}
|
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|
|
$item = array_merge($item, $meeting_db, $meeting_bbb);
|
|
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|
|
$new_meeting_list[] = $item;
|
|
|
|
|
}
|
|
|
|
|
return $new_meeting_list;
|
|
|
|
|
}
|
|
|
|
|
/**
|
|
|
|
|
* Function disabled
|
|
|
|
|
*/
|
|
|
|
|
function publish_meeting($id) {
|
|
|
|
|
//return BigBlueButtonBN::setPublishRecordings($id, 'true', $this->url, $this->salt);
|
|
|
|
|
}
|
|
|
|
|
/**
|
|
|
|
|
* Function disabled
|
|
|
|
|
*/
|
|
|
|
|
function unpublish_meeting($id) {
|
|
|
|
|
//return BigBlueButtonBN::setPublishRecordings($id, 'false', $this->url, $this->salt);
|
|
|
|
|
}
|
|
|
|
|
/**
|
|
|
|
|
* Closes a meeting (usually when the user click on the close button from
|
|
|
|
|
* the conferences listing.
|
|
|
|
|
* @param string The name of the meeting (usually the course code)
|
|
|
|
|
* @return void
|
|
|
|
|
* @assert (0) === false
|
|
|
|
|
*/
|
|
|
|
|
function end_meeting($id) {
|
|
|
|
|
if (empty($id)) { return false; }
|
|
|
|
|
$pass = $this->get_user_meeting_password();
|
|
|
|
|
$endParams = array(
|
|
|
|
|
'meetingId' => $id, // REQUIRED - We have to know which meeting to end.
|
|
|
|
|
'password' => $pass, // REQUIRED - Must match moderator pass for meeting.
|
|
|
|
|
);
|
|
|
|
|
$this->api->endMeetingWithXmlResponseArray($endParams);
|
|
|
|
|
Database::update($this->table, array('status' => 0, 'closed_at' => api_get_utc_datetime()), array('id = ? ' => $id));
|
|
|
|
|
}
|
|
|
|
|
/**
|
|
|
|
|
* Gets the password for a specific meeting for the current user
|
|
|
|
|
* @return string A moderator password if user is teacher, or the course code otherwise
|
|
|
|
|
*/
|
|
|
|
|
function get_user_meeting_password() {
|
|
|
|
|
if ($this->is_teacher()) {
|
|
|
|
|
return $this->get_mod_meeting_password();
|
|
|
|
|
} else {
|
|
|
|
|
return api_get_course_id();
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
/**
|
|
|
|
|
* Generated a moderator password for the meeting
|
|
|
|
|
* @return string A password for the moderation of the videoconference
|
|
|
|
|
*/
|
|
|
|
|
function get_mod_meeting_password() {
|
|
|
|
|
return api_get_course_id().'mod';
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
|
* Get users online in the current course room
|
|
|
|
|
* @return int The number of users currently connected to the videoconference
|
|
|
|
|
* @assert () > -1
|
|
|
|
|
*/
|
|
|
|
|
function get_users_online_in_current_room() {
|
|
|
|
|
$course_id = api_get_course_int_id();
|
|
|
|
|
$meeting_data = Database::select('*', $this->table, array('where' => array('c_id = ? AND status = 1 ' => $course_id)), 'first');
|
|
|
|
|
if (empty($meeting_data)) {
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
$pass = $this->get_mod_meeting_password();
|
|
|
|
|
$info = $this->get_meeting_info(array('meetingId' => $meeting_data['id'], 'password' => $pass));
|
|
|
|
|
|
|
|
|
|
if (!empty($info) && isset($info['participantCount'])) {
|
|
|
|
|
return $info['participantCount'];
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
return 0;
|
|
|
|
|
}
|
|
|
|
|
/**
|
|
|
|
|
* Deletes a previous recording of a meeting
|
|
|
|
|
* @param int intergal ID of the recording
|
|
|
|
|
* @return array ?
|
|
|
|
|
* @assert () === false
|
|
|
|
|
* @todo Also delete links and agenda items created from this recording
|
|
|
|
|
*/
|
|
|
|
|
function delete_record($ids) {
|
|
|
|
|
if (empty($ids) or (is_array($ids) && count($ids)==0)) { return false; }
|
|
|
|
|
$recordingParams = array(
|
|
|
|
|
/*
|
|
|
|
|
* NOTE: Set the recordId below to a valid id after you have
|
|
|
|
|
* created a recorded meeting, and received a real recordID
|
|
|
|
|
* back from your BBB server using the
|
|
|
|
|
* getRecordingsWithXmlResponseArray method.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
// REQUIRED - We have to know which recording:
|
|
|
|
|
'recordId' => $ids,
|
|
|
|
|
);
|
|
|
|
|
return $this->api->deleteRecordingsWithXmlResponseArray($recordingParams);
|
|
|
|
|
}
|
|
|
|
|
/**
|
|
|
|
|
* Creates a link in the links tool from the given videoconference recording
|
|
|
|
|
* @param int ID of the item in the plugin_bbb_meeting table
|
|
|
|
|
* @param string Hash identifying the recording, as provided by the API
|
|
|
|
|
* @return mixed ID of the newly created link, or false on error
|
|
|
|
|
* @assert (null, null) === false
|
|
|
|
|
* @assert (1, null) === false
|
|
|
|
|
* @assert (null, 'abcdefabcdefabcdefabcdef') === false
|
|
|
|
|
*/
|
|
|
|
|
function copy_record_to_link_tool($id, $record_id) {
|
|
|
|
|
if (empty($id) or empty($record_id)) {
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
require_once api_get_path(LIBRARY_PATH).'link.lib.php';
|
|
|
|
|
$records = BigBlueButtonBN::getRecordingsArray($id, $this->url, $this->salt);
|
|
|
|
|
if (!empty($records)) {
|
|
|
|
|
foreach ($records as $record) {
|
|
|
|
|
error_log($record['recordID']);
|
|
|
|
|
if ($record['recordID'] == $record_id) {
|
|
|
|
|
if (is_array($record) && isset($record['recordID']) && isset($record['playbacks'])) {
|
|
|
|
|
foreach ($record['playbacks'] as $item) {
|
|
|
|
|
$link = new Link();
|
|
|
|
|
$params['url'] = $item['url'];
|
|
|
|
|
$params['title'] = 'bbb 1';
|
|
|
|
|
$id = $link->save($params);
|
|
|
|
|
return $id;
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
return false;
|
|
|
|
|
}
|
|
|
|
|
/**
|
|
|
|
|
* Checks if the videoconference server is running.
|
|
|
|
|
* Function currently disabled (always returns 1)
|
|
|
|
|
* @return bool True if server is running, false otherwise
|
|
|
|
|
* @assert () === false
|
|
|
|
|
*/
|
|
|
|
|
function is_server_running() {
|
|
|
|
|
return true;
|
|
|
|
|
//return BigBlueButtonBN::isServerRunning($this->protocol.$this->url);
|
|
|
|
|
}
|
|
|
|
|
}
|
