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/*
* WebSockets IRC client
* Copyright (C) 2011 Joel Martin
* Licensed under LGPL-3 (see LICENSE.txt)
*
* Includes VT100.js from:
* http://code.google.com/p/sshconsole
* Which was modified from:
* http://fzort.org/bi/o.php#vt100_js
* IRC Client protocol:
* http://www.faqs.org/rfcs/rfc2812.html
*/
function IRC(target, connect_callback, disconnect_callback) {
var that = {}, // Public API interface
vt100, ws, sQ = [],
state = "unconnected",
irc_nick, irc_channel,
termType = "VT100";
Array.prototype.pushStr = function (str) {
var n = str.length;
for (var i=0; i < n; i++) {
this.push(str.charCodeAt(i));
}
}
function do_send() {
if (sQ.length > 0) {
Util.Debug("Sending " + sQ);
ws.send(sQ);
sQ = [];
}
}
function do_recv() {
console.log(">> do_recv");
var rQ, rQi, i;
while (ws.rQlen() > 1) {
rQ = ws.get_rQ();
rQi = ws.get_rQi();
for (i = rQi; i < rQ.length; i++) {
if (rQ[i] === 10) {
break;
}
}
if (i >= rQ.length) {
// No line break found
break;
}
recvMsg(ws.rQshiftStr((i-rQi) + 1));
}
//console.log("<< do_recv");
}
// Handle an IRC message
function recvMsg(msg) {
Util.Debug(">> recvMsg('" + msg + "')");
var tokens = msg.split(' '), in_params = true,
prefix, command, params = [], trailing = [];
Util.Info(" tokens: " + tokens);
if (tokens[0].charAt(0) === ":") {
prefix = tokens.shift();
}
command = tokens.shift();
while (tokens.length > 0) {
if (tokens[0].charAt(0) === ":") {
in_params = false;
}
if (in_params) {
params.push(tokens.shift());
} else {
trailing.push(tokens.shift());
}
}
Util.Info(" prefix: " + prefix);
Util.Info(" command: " + command);
Util.Info(" params: " + params);
Util.Info(" trailing: " + trailing);
// Show raw received
vt100.write(msg);
switch (command) {
case "004":
state = "registered";
vt100.write("Joining channel #" + irc_channel);
sendCmd("JOIN #" + irc_channel);
break;
case "JOIN":
state = "joined";
vt100.write("Joined channel #" + irc_channel);
break;
}
Util.Debug("<< recvMsg('" + msg + "')");
}
function sendCmd(msg) {
Util.Info("Sending: " + msg);
sQ.pushStr(msg + "\r\n");
do_send();
}
that.sendMsg = function(msg) {
// TODO parse into message
sendCmd("PRIVMSG #" + irc_channel + " :" + msg);
}
that.connect = function(host, port, encrypt, nick, channel) {
var host = host,
port = port,
scheme = "ws://", uri;
irc_nick = nick;
irc_channel = channel;
Util.Debug(">> connect");
if ((!host) || (!port)) {
alert("must set host and port");
return false;
}
if (ws) {
ws.close();
}
if (encrypt) {
scheme = "wss://";
}
uri = scheme + host + ":" + port;
Util.Info("connecting to " + uri);
ws.open(uri);
Util.Debug("<< connect");
return true;
}
that.disconnect = function() {
Util.Debug(">> disconnect");
if (ws) {
ws.close();
}
disconnect_callback();
Util.Debug("<< disconnect");
}
function constructor() {
/* Initialize Websock object */
ws = new Websock();
ws.on('message', do_recv);
ws.on('open', function(e) {
Util.Info(">> WebSockets.onopen");
// Send registration commands
state = "connected";
sendCmd("NICK " + irc_nick);
// TODO: how to determine this?
sendCmd("USER joelm 0 * :Joel Martin");
connect_callback();
Util.Info("<< WebSockets.onopen");
});
ws.on('close', function(e) {
Util.Info(">> WebSockets.onclose");
that.disconnect();
Util.Info("<< WebSockets.onclose");
});
ws.on('error', function(e) {
Util.Info(">> WebSockets.onerror");
that.disconnect();
Util.Info("<< WebSockets.onerror");
});
/* Initialize the terminal emulator/renderer */
vt100 = new VT100(80, 24, target);
// Show cursor
vt100.curs_set(true, false);
/*
* Override VT100 I/O routines
*/
// Set handler for sending characters
vt100.getch(
function send_chr(chr, vt) {
var i;
Util.Debug(">> send_chr: " + chr);
for (i = 0; i < chr.length; i++) {
sQ.push(chr.charCodeAt(i));
}
do_send();
vt100.getch(send_chr);
}
);
vt100.debug = function(message) {
Util.Debug(message + "\n");
}
vt100.warn = function(message) {
Util.Warn(message + "\n");
}
vt100.curs_set = function(vis, grab, eventist)
{
this.debug("curs_set:: vis: " + vis + ", grab: " + grab);
if (vis !== undefined)
this.cursor_vis_ = (vis > 0);
}
return that;
}
return constructor(); // Return the public API interface
} // End of Telnet()
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