--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/xmpp.js Tue Feb 02 23:31:00 2010 +0000
@@ -0,0 +1,319 @@
+// Node libs
+var tcp = require("tcp");
+
+// External libs
+var xml = require("./node-xml");
+var sha1 = require("./sha1");
+
+// This lib
+var xmpp = exports;
+
+// Wraps a function so that its 'this' is always 'context' when called
+var recontext = function (context, f) { return function () { return f.apply(context, arguments); }; };
+
+xmpp.xmlns = {
+ streams: "http://etherx.jabber.org/streams",
+ component_accept: "jabber:component:accept"
+};
+
+xmpp.Status = {
+ ERROR: 0,
+ CONNECTING: 1,
+ CONNFAIL: 2,
+ AUTHENTICATING: 3,
+ AUTHFAIL: 4,
+ CONNECTED: 5,
+ DISCONNECTED: 6,
+ DISCONNECTING: 7,
+};
+
+xmpp.LogLevel = {
+ DEBUG: 0,
+ INFO: 1,
+ WARN: 2,
+ ERROR: 3,
+ FATAL: 4
+};
+/** XMPPStream: Takes a parser, eats bytes, fires callbacks on stream events **/
+xmpp.Stream = function (callbacks)
+{
+ this.callbacks = callbacks;
+ var stream = this;
+ var stanza;
+ this.parser = new xml.SaxParser(function (cb)
+ {
+ cb.onStartElementNS(function (tagname, attr_arr, prefix, uri, namespaces)
+ {
+ var attr = {xmlns:uri};
+ for(var i=0;i<attr_arr.length;i++)
+ attr[attr_arr[i][0]] = attr_arr[i][1];
+ for(var i=0;i<namespaces.length;i++)
+ if(namespaces[i][0].length > 0)
+ attr["xmlns:"+namespaces[i][0]] = namespaces[i][1];
+ if(!stanza)
+ {
+ if(stream.opened)
+ stanza = xmpp.stanza(tagname, attr);
+ else if(tagname == "stream" && uri == xmpp.xmlns.streams)
+ {
+ stream.opened = true;
+ callbacks.opened(attr);
+ }
+ else
+ {
+ callbacks.error("no-stream");
+ }
+ }
+ else
+ {
+ stanza.c(tagname, attr);
+ }
+
+ });
+
+ cb.onEndElementNS(function(tagname) {
+ if(stanza)
+ if(stanza.last_node.length == 1)
+ {
+ callbacks.stanza(stanza);
+ stanza = null;
+ }
+ else
+ stanza.up();
+ else
+ {
+ stream.opened = false;
+ callbacks.closed();
+ }
+ });
+
+ cb.onCharacters(function(chars) {
+ if(stanza)
+ stanza.t(chars);
+ });
+ });
+
+ this.data = function (data)
+ {
+ return this.parser.parseString(data);
+ }
+
+ return this;
+};
+
+
+/** Connection: Takes host/port, manages stream **/
+xmpp.Connection = function (host, port)
+{
+ this.host = host || "localhost";
+ this.port = port || 5347;
+
+ this.socket = tcp.createConnection();
+
+ this.stream = new xmpp.Stream({
+ opened: recontext(this, this._stream_opened),
+ stanza: recontext(this, this._handle_stanza),
+ closed: recontext(this, this._stream_closed)
+ });
+
+ return this;
+};
+
+exports.Connection.prototype = {
+ connect: function (jid, pass, callback)
+ {
+ this.jid = jid;
+ this.password = pass;
+ this.connect_callback = callback;
+
+ var conn = this;
+ this.socket.addListener("connect", recontext(this, conn._socket_connected));
+ this.socket.addListener("disconnect", recontext(this, conn._socket_disconnected));
+ this.socket.addListener("receive", recontext(this, conn._socket_received));
+
+ // Connect TCP socket
+ this.socket.connect(this.port, this.host);
+
+ this._setStatus(xmpp.Status.CONNECTING);
+ },
+
+ send: function (data)
+ {
+ this.debug("SND: "+data);
+ this.socket.send(data.toString());
+ },
+
+ // Update the status of the connection, call connect_callback
+ _setStatus: function (status, condition)
+ {
+ this.status = status;
+ this.connect_callback(status, condition);
+ },
+
+ // Socket listeners, called on TCP-level events
+ _socket_connected: function ()
+ {
+ this.info("CONNECTED.");
+ this.send("<stream:stream xmlns='jabber:component:accept' xmlns:stream='http://etherx.jabber.org/streams' to='"+this.jid+"'>");
+ },
+
+ _socket_disconnected: function (had_error)
+ {
+ if(this.status == xmpp.Status.CONNECTING)
+ this._setStatus(xmpp.Status.CONNFAIL);
+ elseif(this.status == xmpp.Status.CONNECTED)
+ this._setStatus(xmpp.Status.DISCONNECTED);
+ this.info("DISCONNECTED.");
+ },
+
+ _socket_received: function (data)
+ {
+ this.debug("RCV: "+data);
+ // Push to parser
+ this.stream.data(data);
+ },
+
+ // Stream listeners, called on XMPP-level events
+ _stream_opened: function (attr)
+ {
+ this.debug("STREAM: opened.");
+ this._setStatus(xmpp.Status.AUTHENTICATING);
+ var handshake = sha1.hex(attr.id + this.password);
+ this.debug("Sending authentication token...");
+ this.send("<handshake>"+handshake+"</handshake>");
+ },
+
+ _handle_stanza: function (stanza)
+ {
+ if(stanza.attr.xmlns == xmpp.xmlns.component_accept)
+ {
+ if(stanza.name == "handshake")
+ {
+ this._setStatus(xmpp.Status.CONNECTED);
+ }
+ }
+ this.debug("STANZA: "+stanza.toString());
+ },
+
+ _stream_closed: function ()
+ {
+ this.debug("STREAM: closed.");
+ this.socket.close();
+ if(this.status == xmpp.Status.CONNECTING)
+ this._setStatus(xmpp.status.CONNFAIL);
+ else
+ this._setStatus(xmpp.Status.DISCONNECTED);
+ },
+
+ _stream_error: function (condition)
+ {
+ this._setStatus(xmpp.Status.ERROR, condition);
+ },
+
+ // Logging
+ log: function (level, message) {},
+ debug: function (message) { return this.log(xmpp.LogLevel.DEBUG, message); },
+ info: function (message) { return this.log(xmpp.LogLevel.INFO , message); },
+ warn: function (message) { return this.log(xmpp.LogLevel.WARN , message); },
+ error: function (message) { return this.log(xmpp.LogLevel.ERROR, message); },
+ fatal: function (message) { return this.log(xmpp.LogLevel.FATAL, message); }
+
+};
+
+function xmlescape(s)
+{
+ return s.replace(/&/g, "&")
+ .replace(/</g, "<")
+ .replace(/>/g, ">")
+ .replace(/\"/g, """);
+}
+
+/** StanzaBuilder: Helps create and manipulate XML snippets **/
+xmpp.StanzaBuilder = function (name, attr)
+{
+ this.name = name;
+ this.attr = attr || {};
+ this.tags = [];
+ this.children = [];
+ this.last_node = [this];
+ return this;
+};
+
+xmpp.StanzaBuilder.prototype = {
+ c: function (name, attr)
+ {
+ var s = new xmpp.StanzaBuilder(name, attr);
+ var parent = this.last_node[this.last_node.length-1];
+ parent.tags.push(s);
+ parent.children.push(s);
+ this.last_node.push(s);
+ return this;
+ },
+
+ t: function (text)
+ {
+ var parent = this.last_node[this.last_node.length-1];
+ parent.children.push(text);
+ return this;
+ },
+
+ up: function ()
+ {
+ this.last_node.pop();
+ return this;
+ },
+
+ toString: function (top_tag_only)
+ {
+ var buf = [];
+ buf.push("<" + this.name);
+ for(var attr in this.attr)
+ {
+ buf.push(" " + attr + "='" + xmlescape(this.attr[attr]) + "'");
+ }
+
+ // Now add children if wanted
+ if(top_tag_only)
+ {
+ buf.push(">");
+ }
+ else if(this.children.length == 0)
+ {
+ buf.push("/>");
+ }
+ else
+ {
+ buf.push(">");
+ for(var i = 0; i<this.children.length; i++)
+ {
+ var child = this.children[i];
+ if(typeof(child) == "string")
+ buf.push(xmlescape(child));
+ else
+ buf.push(child.toString());
+ }
+ buf.push("</" + this.name + ">");
+ }
+ return buf.join("");
+ }
+}
+
+xmpp.stanza = function (name, attr)
+{
+ return new xmpp.StanzaBuilder(name, attr);
+}
+
+xmpp.message = function (attr)
+{
+ return xmpp.stanza("message", attr);
+}
+
+xmpp.presence = function (attr)
+{
+ return xmpp.stanza("presence", attr);
+}
+
+xmpp.iq = function (attr)
+{
+ return xmpp.stanza("iq", attr);
+}