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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// RFC1413-ish identification server for ChatZilla
// One Ident Server is used for all networks. When multiple networks are in the
// process of connecting, it won't stop listening until they're all done.
function IdentServer(parent)
{
this.responses = new Array();
this.listening = false;
this.dns = getService("@mozilla.org/network/dns-service;1","nsIDNSService");
this.parent = parent;
this.eventPump = parent.eventPump;
}
IdentServer.prototype.start =
function ident_start()
{
if (this.listening)
return true;
if (!this.socket)
this.socket = new CBSConnection();
if (!this.socket.listen(113, this))
return false;
this.listening = true;
return true;
}
IdentServer.prototype.stop =
function ident_stop()
{
if (!this.socket || !this.listening)
return;
// No need to destroy socket, listen() will work again.
this.socket.close();
this.listening = false;
}
IdentServer.prototype.addNetwork =
function ident_add(net, serv)
{
var addr, dnsRecord = this.dns.resolve(serv.hostname, 0);
while (dnsRecord.hasMore())
{
addr = dnsRecord.getNextAddrAsString();
this.responses.push({net: net, ip: addr, port: serv.port,
username: net.INITIAL_NAME || net.INITIAL_NICK});
}
if (this.responses.length == 0)
return false;
// Start the ident server if necessary.
if (!this.listening)
return this.start();
return true;
}
IdentServer.prototype.removeNetwork =
function ident_remove(net)
{
var newResponses = new Array();
for (var i = 0; i < this.responses.length; ++i)
{
if (this.responses[i].net != net)
newResponses.push(this.responses[i]);
}
this.responses = newResponses;
// Only stop listening if responses is empty - no networks need us anymore.
if (this.responses.length == 0)
this.stop();
}
IdentServer.prototype.onSocketAccepted =
function ident_gotconn(serv, transport)
{
// Using the listening CBSConnection to accept would stop it listening.
// A new CBSConnection does exactly what we want.
var connection = new CBSConnection();
connection.accept(transport);
connection.startAsyncRead(new IdentListener(this, connection));
}
function IdentListener(server, connection)
{
this.server = server;
this.connection = connection;
}
IdentListener.prototype.onStreamDataAvailable =
function ident_listener_sda(request, inStream, sourceOffset, count)
{
var ev = new CEvent("ident-listener", "data-available", this,
"onDataAvailable");
ev.line = this.connection.readData(0, count);
this.server.eventPump.routeEvent(ev);
}
IdentListener.prototype.onStreamClose =
function ident_listener_sclose(status)
{
}
IdentListener.prototype.onDataAvailable =
function ident_listener_dataavailable(e)
{
var incomplete = (e.line.substr(-2) != "\r\n");
var lines = e.line.split(/\r\n/);
if (this.savedLine)
{
lines[0] = this.savedLine + lines[0];
this.savedLine = "";
}
if (incomplete)
this.savedLine = lines.pop()
for (var i in lines)
{
var ev = new CEvent("ident-listener", "rawdata", this, "onRawData");
ev.line = lines[i];
this.server.eventPump.routeEvent(ev);
}
}
IdentListener.prototype.onRawData =
function ident_listener_rawdata(e)
{
var ports = e.line.match(/(\d+) *, *(\d+)/);
// <port-on-server> , <port-on-client>
// (where "server" is the ident server)
if (!ports)
{
this.connection.disconnect(); // same meaning as "ERROR : UNKNOWN-ERROR"
return;
}
e.type = "parsedrequest";
e.destObject = this;
e.destMethod = "onParsedRequest";
e.localPort = ports[1];
e.remotePort = ports[2];
}
IdentListener.prototype.onParsedRequest =
function ident_listener_request(e)
{
function response(str)
{
return e.localPort + " , " + e.remotePort + " : " + str + "\r\n";
};
function validPort(p)
{
return (p >= 1) && (p <= 65535);
};
if (!validPort(e.localPort) || !validPort(e.remotePort))
{
this.connection.sendData(response("ERROR : INVALID-PORT"));
this.connection.disconnect();
return;
}
var found, responses = this.server.responses;
for (var i = 0; i < responses.length; ++i)
{
if ((e.remotePort == responses[i].port) &&
(this.connection._transport.host == responses[i].ip))
{
// charset defaults to US-ASCII
// anything except an OS username should use OTHER
// however, ircu sucks, so we can't do that.
this.connection.sendData(response("USERID : CHATZILLA :" +
responses[i].username));
found = true;
break;
}
}
if (!found)
this.connection.sendData(response("ERROR : NO-USER"));
// Spec gives us a choice: drop the connection, or listen for more queries.
// Since IRC servers will only ever want one name, we disconnect.
this.connection.disconnect();
}
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