jiti-meet/modules/xmpp/moderator.js

435 lines
15 KiB
JavaScript

/* global $, $iq, APP, config, messageHandler,
roomName, sessionTerminated, Strophe, Util */
var XMPPEvents = require("../../service/xmpp/XMPPEvents");
var Settings = require("../settings/Settings");
var AuthenticationEvents
= require("../../service/authentication/AuthenticationEvents");
/**
* Contains logic responsible for enabling/disabling functionality available
* only to moderator users.
*/
var connection = null;
var focusUserJid;
function createExpBackoffTimer(step) {
var count = 1;
return function (reset) {
// Reset call
if (reset) {
count = 1;
return;
}
// Calculate next timeout
var timeout = Math.pow(2, count - 1);
count += 1;
return timeout * step;
};
}
var getNextTimeout = createExpBackoffTimer(1000);
var getNextErrorTimeout = createExpBackoffTimer(1000);
// External authentication stuff
var externalAuthEnabled = false;
// Sip gateway can be enabled by configuring Jigasi host in config.js or
// it will be enabled automatically if focus detects the component through
// service discovery.
var sipGatewayEnabled;
var eventEmitter = null;
var Moderator = {
isModerator: function () {
return connection && connection.emuc.isModerator();
},
isPeerModerator: function (peerJid) {
return connection &&
connection.emuc.getMemberRole(peerJid) === 'moderator';
},
isExternalAuthEnabled: function () {
return externalAuthEnabled;
},
isSipGatewayEnabled: function () {
return sipGatewayEnabled;
},
setConnection: function (con) {
connection = con;
},
init: function (xmpp, emitter) {
this.xmppService = xmpp;
eventEmitter = emitter;
sipGatewayEnabled =
config.hosts && config.hosts.call_control !== undefined;
// Message listener that talks to POPUP window
function listener(event) {
if (event.data && event.data.sessionId) {
if (event.origin !== window.location.origin) {
console.warn("Ignoring sessionId from different origin: " +
event.origin);
return;
}
localStorage.setItem('sessionId', event.data.sessionId);
// After popup is closed we will authenticate
}
}
// Register
if (window.addEventListener) {
window.addEventListener("message", listener, false);
} else {
window.attachEvent("onmessage", listener);
}
},
onMucMemberLeft: function (jid) {
console.info("Someone left is it focus ? " + jid);
var resource = Strophe.getResourceFromJid(jid);
if (resource === 'focus' && !this.xmppService.sessionTerminated) {
console.info(
"Focus has left the room - leaving conference");
//hangUp();
// We'd rather reload to have everything re-initialized
// FIXME: show some message before reload
location.reload();
}
},
setFocusUserJid: function (focusJid) {
if (!focusUserJid) {
focusUserJid = focusJid;
console.info("Focus jid set to: " + focusUserJid);
}
},
getFocusUserJid: function () {
return focusUserJid;
},
getFocusComponent: function () {
// Get focus component address
var focusComponent = config.hosts.focus;
// If not specified use default: 'focus.domain'
if (!focusComponent) {
focusComponent = 'focus.' + config.hosts.domain;
}
return focusComponent;
},
createConferenceIq: function (roomName) {
// Generate create conference IQ
var elem = $iq({to: Moderator.getFocusComponent(), type: 'set'});
// Session Id used for authentication
var sessionId = localStorage.getItem('sessionId');
var machineUID = Settings.getSettings().uid;
console.info(
"Session ID: " + sessionId + " machine UID: " + machineUID);
elem.c('conference', {
xmlns: 'http://jitsi.org/protocol/focus',
room: roomName,
'machine-uid': machineUID
});
if (sessionId) {
elem.attrs({ 'session-id': sessionId});
}
if (config.hosts.bridge !== undefined) {
elem.c(
'property',
{ name: 'bridge', value: config.hosts.bridge})
.up();
}
// Tell the focus we have Jigasi configured
if (config.hosts.call_control !== undefined) {
elem.c(
'property',
{ name: 'call_control', value: config.hosts.call_control})
.up();
}
if (config.channelLastN !== undefined) {
elem.c(
'property',
{ name: 'channelLastN', value: config.channelLastN})
.up();
}
if (config.adaptiveLastN !== undefined) {
elem.c(
'property',
{ name: 'adaptiveLastN', value: config.adaptiveLastN})
.up();
}
if (config.adaptiveSimulcast !== undefined) {
elem.c(
'property',
{ name: 'adaptiveSimulcast', value: config.adaptiveSimulcast})
.up();
}
if (config.openSctp !== undefined) {
elem.c(
'property',
{ name: 'openSctp', value: config.openSctp})
.up();
}
if(config.startAudioMuted !== undefined)
{
elem.c(
'property',
{ name: 'startAudioMuted', value: config.startAudioMuted})
.up();
}
if(config.startVideoMuted !== undefined)
{
elem.c(
'property',
{ name: 'startVideoMuted', value: config.startVideoMuted})
.up();
}
elem.c(
'property',
{ name: 'simulcastMode', value: 'rewriting'})
.up();
elem.up();
return elem;
},
parseSessionId: function (resultIq) {
var sessionId = $(resultIq).find('conference').attr('session-id');
if (sessionId) {
console.info('Received sessionId: ' + sessionId);
localStorage.setItem('sessionId', sessionId);
}
},
parseConfigOptions: function (resultIq) {
Moderator.setFocusUserJid(
$(resultIq).find('conference').attr('focusjid'));
var authenticationEnabled
= $(resultIq).find(
'>conference>property' +
'[name=\'authentication\'][value=\'true\']').length > 0;
console.info("Authentication enabled: " + authenticationEnabled);
externalAuthEnabled = $(resultIq).find(
'>conference>property' +
'[name=\'externalAuth\'][value=\'true\']').length > 0;
console.info('External authentication enabled: ' + externalAuthEnabled);
if (!externalAuthEnabled) {
// We expect to receive sessionId in 'internal' authentication mode
Moderator.parseSessionId(resultIq);
}
var authIdentity = $(resultIq).find('>conference').attr('identity');
eventEmitter.emit(AuthenticationEvents.IDENTITY_UPDATED,
authenticationEnabled, authIdentity);
// Check if focus has auto-detected Jigasi component(this will be also
// included if we have passed our host from the config)
if ($(resultIq).find(
'>conference>property' +
'[name=\'sipGatewayEnabled\'][value=\'true\']').length) {
sipGatewayEnabled = true;
}
console.info("Sip gateway enabled: " + sipGatewayEnabled);
},
// FIXME: we need to show the fact that we're waiting for the focus
// to the user(or that focus is not available)
allocateConferenceFocus: function (roomName, callback) {
// Try to use focus user JID from the config
Moderator.setFocusUserJid(config.focusUserJid);
// Send create conference IQ
var iq = Moderator.createConferenceIq(roomName);
var self = this;
connection.sendIQ(
iq,
function (result) {
// Setup config options
Moderator.parseConfigOptions(result);
if ('true' === $(result).find('conference').attr('ready')) {
// Reset both timers
getNextTimeout(true);
getNextErrorTimeout(true);
// Exec callback
callback();
} else {
var waitMs = getNextTimeout();
console.info("Waiting for the focus... " + waitMs);
// Reset error timeout
getNextErrorTimeout(true);
window.setTimeout(
function () {
Moderator.allocateConferenceFocus(
roomName, callback);
}, waitMs);
}
},
function (error) {
// Invalid session ? remove and try again
// without session ID to get a new one
var invalidSession
= $(error).find('>error>session-invalid').length;
if (invalidSession) {
console.info("Session expired! - removing");
localStorage.removeItem("sessionId");
}
if ($(error).find('>error>graceful-shutdown').length) {
eventEmitter.emit(XMPPEvents.GRACEFUL_SHUTDOWN);
return;
}
// Check for error returned by the reservation system
var reservationErr = $(error).find('>error>reservation-error');
if (reservationErr.length) {
// Trigger error event
var errorCode = reservationErr.attr('error-code');
var errorMsg;
if ($(error).find('>error>text')) {
errorMsg = $(error).find('>error>text').text();
}
eventEmitter.emit(
XMPPEvents.RESERVATION_ERROR, errorCode, errorMsg);
return;
}
// Not authorized to create new room
if ($(error).find('>error>not-authorized').length) {
console.warn("Unauthorized to start the conference", error);
var toDomain
= Strophe.getDomainFromJid(error.getAttribute('to'));
if (toDomain !== config.hosts.anonymousdomain) {
// FIXME: "is external" should come either from
// the focus or config.js
externalAuthEnabled = true;
}
eventEmitter.emit(
XMPPEvents.AUTHENTICATION_REQUIRED,
function () {
Moderator.allocateConferenceFocus(
roomName, callback);
});
return;
}
var waitMs = getNextErrorTimeout();
console.error("Focus error, retry after " + waitMs, error);
// Show message
var focusComponent = Moderator.getFocusComponent();
var retrySec = waitMs / 1000;
// FIXME: message is duplicated ?
// Do not show in case of session invalid
// which means just a retry
if (!invalidSession) {
eventEmitter.emit(XMPPEvents.FOCUS_DISCONNECTED,
focusComponent, retrySec);
}
// Reset response timeout
getNextTimeout(true);
window.setTimeout(
function () {
Moderator.allocateConferenceFocus(roomName, callback);
}, waitMs);
}
);
},
getLoginUrl: function (roomName, urlCallback) {
var iq = $iq({to: Moderator.getFocusComponent(), type: 'get'});
iq.c('login-url', {
xmlns: 'http://jitsi.org/protocol/focus',
room: roomName,
'machine-uid': Settings.getSettings().uid
});
connection.sendIQ(
iq,
function (result) {
var url = $(result).find('login-url').attr('url');
url = url = decodeURIComponent(url);
if (url) {
console.info("Got auth url: " + url);
urlCallback(url);
} else {
console.error(
"Failed to get auth url from the focus", result);
}
},
function (error) {
console.error("Get auth url error", error);
}
);
},
getPopupLoginUrl: function (roomName, urlCallback) {
var iq = $iq({to: Moderator.getFocusComponent(), type: 'get'});
iq.c('login-url', {
xmlns: 'http://jitsi.org/protocol/focus',
room: roomName,
'machine-uid': Settings.getSettings().uid,
popup: true
});
connection.sendIQ(
iq,
function (result) {
var url = $(result).find('login-url').attr('url');
url = url = decodeURIComponent(url);
if (url) {
console.info("Got POPUP auth url: " + url);
urlCallback(url);
} else {
console.error(
"Failed to get POPUP auth url from the focus", result);
}
},
function (error) {
console.error('Get POPUP auth url error', error);
}
);
},
logout: function (callback) {
var iq = $iq({to: Moderator.getFocusComponent(), type: 'set'});
var sessionId = localStorage.getItem('sessionId');
if (!sessionId) {
callback();
return;
}
iq.c('logout', {
xmlns: 'http://jitsi.org/protocol/focus',
'session-id': sessionId
});
connection.sendIQ(
iq,
function (result) {
var logoutUrl = $(result).find('logout').attr('logout-url');
if (logoutUrl) {
logoutUrl = decodeURIComponent(logoutUrl);
}
console.info("Log out OK, url: " + logoutUrl, result);
localStorage.removeItem('sessionId');
callback(logoutUrl);
},
function (error) {
console.error("Logout error", error);
}
);
}
};
module.exports = Moderator;