Mercurial > eldonilo > lightstring
view lightstring.js @ 105:fb50311997b5
Add EventEmitter.js lib
author | Sonny Piers <sonny.piers@gmail.com> |
---|---|
date | Wed, 13 Jun 2012 12:48:06 +0200 |
parents | f14558915187 |
children | c06ec02217ee |
line wrap: on
line source
'use strict'; /** Copyright (c) 2011, Sonny Piers <sonny at fastmail dot net> Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted, provided that the above copyright notice and this permission notice appear in all copies. THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ var Lightstring = { /** * @namespace Holds XMPP namespaces. * @description http://xmpp.org/xmpp-protocols/protocol-namespaces */ ns: { streams: 'http://etherx.jabber.org/streams', jabber_client: 'jabber:client', xmpp_stanzas: 'urn:ietf:params:xml:ns:xmpp-stanzas' }, /** * @namespace Holds XMPP stanza builders. */ stanzas: { stream: { open: function(aService) { return "<stream:stream to='" + aService + "'" + " xmlns='" + Lightstring.ns['jabber_client'] + "'" + " xmlns:stream='" + Lightstring.ns['streams'] + "'" + " version='1.0'>"; }, close: function() { return "</stream:stream>"; } }, errors: { iq: function(from, id, type, error) { return "<iq to='" + from + "'" + " id='" + id + "'" + " type='error'>" + "<error type='" + type + "'>" + "<" + error + " xmlns='" + Lightstring.ns['xmpp_stanzas'] + "'/>" + //TODO: allow text content. //TODO: allow text and payload. "</error>" + "</iq>"; } } }, /** * @namespace Holds Lightstring plugins */ plugins: {}, /** * @private */ parser: new DOMParser(), /** * @private */ serializer: new XMLSerializer(), /** * @function Transforms a XML string to a DOM object. * @param {String} aString XML string. * @return {Object} Domified XML. */ XML2DOM: function(aString) { var DOM = null; try { DOM = this.parser.parseFromString(aString, 'text/xml').documentElement; } catch (e) { //TODO: error } finally { return DOM; }; }, /** * @function Transforms a DOM object to a XML string. * @param {Object} aString DOM object. * @return {String} Stringified DOM. */ DOM2XML: function(aElement) { var XML = null; try { XML = this.serializer.serializeToString(aElement); } catch (e) { //TODO: error } finally { return XML; }; }, /** * @function Get an unique identifier. * @param {String} [aString] Prefix to put before the identifier. * @return {String} Identifier. */ newId: (function() { var id = 1024; return function(prefix) { if (typeof prefix === 'string') return prefix + id++; return '' + id++; }; })() }; /** * @constructor Creates a new Lightstring connection * @param {String} [aService] The connection manager URL. * @memberOf Lightstring */ Lightstring.Connection = function(aService) { if (aService) this.service = aService; /** * @namespace Holds connection events handlers */ this.handlers = {}; /** * @namespace Holds connection iq callbacks */ this.callbacks = {}; }; Lightstring.Connection.prototype = new EventEmitter(); /** * @function Create and open a websocket then go though the XMPP authentification process. * @param {String} [aJid] The JID (Jabber id) to use. * @param {String} [aPassword] The associated password. */ Lightstring.Connection.prototype.connect = function(aJid, aPassword) { this.emit('connecting'); this.jid = new Lightstring.JID(aJid); if (aPassword) this.password = aPassword; if (!this.jid.bare) return; //TODO: error if (!this.service) return; //TODO: error function getProtocol(aURL) { var a = document.createElement('a'); a.href = aURL; return a.protocol.replace(':', ''); } var protocol = getProtocol(this.service); if (protocol.match('http')) this.connection = new Lightstring.BOSHConnection(this.service); else if (protocol.match('ws')) this.connection = new Lightstring.WebSocketConnection(this.service); this.connection.open(); var that = this; this.connection.once('open', function() { that.emit('open'); }); this.connection.on('out', function(stanza) { that.emit('out', stanza); }); this.connection.on('in', function(stanza) { var stanza = new Lightstring.Stanza(stanza); //FIXME: node-xmpp-bosh sends a self-closing stream:stream tag; it is wrong! that.emit('stanza', stanza); if (!stanza.DOM) return; var name = stanza.DOM.localName; //Authentication //FIXME SASL mechanisms and XMPP features can be both in a stream:features if (name === 'features') { //SASL mechanisms if (stanza.DOM.firstChild.localName === 'mechanisms') { stanza.mechanisms = []; var nodes = stanza.DOM.getElementsByTagName('mechanism'); for (var i = 0; i < nodes.length; i++) stanza.mechanisms.push(nodes[i].textContent); that.emit('mechanisms', stanza); } //XMPP features else { //TODO: stanza.features that.emit('features', stanza); } } else if (name === 'challenge') { that.emit('challenge', stanza); } else if (name === 'failure') { that.emit('failure', stanza); } else if (name === 'success') { that.emit('success', stanza); } //Iq callbacks else if (name === 'iq') { var payload = stanza.DOM.firstChild; if (payload) that.emit('iq/' + payload.namespaceURI + ':' + payload.localName, stanza); var id = stanza.DOM.getAttribute('id'); if (!(id && id in that.callbacks)) return; var type = stanza.DOM.getAttribute('type'); if (type !== 'result' && type !== 'error') return; //TODO: warning var callback = that.callbacks[id]; if (type === 'result' && callback.success) callback.success.call(that, stanza); else if (type === 'error' && callback.error) callback.error.call(that, stanza); delete that.callbacks[id]; } else if (name === 'presence' || name === 'message') { that.emit(name, stanza); } }); }; /** * @function Send a message. * @param {String|Object} aStanza The message to send. * @param {Function} [aCallback] Executed on answer. (stanza must be iq) */ Lightstring.Connection.prototype.send = function(aStanza, aSuccess, aError) { if (!(aStanza instanceof Lightstring.Stanza)) var stanza = new Lightstring.Stanza(aStanza); else var stanza = aStanza; if (!stanza) return; if (stanza.DOM.tagName === 'iq') { var type = stanza.DOM.getAttribute('type'); if (type !== 'get' || type !== 'set') ; //TODO: error var callback = {success: aSuccess, error: aError}; var id = stanza.DOM.getAttribute('id'); if (!id) { var id = Lightstring.newId('sendiq:'); stanza.DOM.setAttribute('id', id); } this.callbacks[id] = callback; } else if (aSuccess || aError) ; //TODO: warning (no callback without iq) //FIXME this.socket.send(stanza.XML); (need some work on Lightstring.Stanza) var fixme = Lightstring.DOM2XML(stanza.DOM); stanza.XML = fixme; this.connection.send(fixme); this.emit('output', stanza); }; /** * @function Closes the XMPP stream and the socket. */ Lightstring.Connection.prototype.disconnect = function() { this.emit('disconnecting'); var stream = Lightstring.stanzas.stream.close(); this.socket.send(stream); this.emit('XMLOutput', stream); this.socket.close(); }; Lightstring.Connection.prototype.load = function() { for (var i = 0; i < arguments.length; i++) { var name = arguments[i]; if (!(name in Lightstring.plugins)) continue; //TODO: error var plugin = Lightstring.plugins[name]; //Namespaces for (var ns in plugin.namespaces) Lightstring.ns[ns] = plugin.namespaces[ns]; //Stanzas Lightstring.stanzas[name] = {}; for (var stanza in plugin.stanzas) Lightstring.stanzas[name][stanza] = plugin.stanzas[stanza]; //Handlers for (var handler in plugin.handlers) this.on(handler, plugin.handlers[handler]); //Methods this[name] = {}; for (var method in plugin.methods) this[name][method] = plugin.methods[method].bind(this); if (plugin.init) plugin.init.apply(this); } };