hardlounge/src/identification.js

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"use strict";
const fs = require("fs");
const net = require("net");
const colors = require("colors/safe");
const Helper = require("./helper");
class Identification {
constructor(startedCallback) {
this.connectionId = 0;
this.connections = new Map();
if (typeof Helper.config.oidentd === "string") {
this.oidentdFile = Helper.expandHome(Helper.config.oidentd);
log.info(`Oidentd file: ${colors.green(this.oidentdFile)}`);
this.refresh();
}
if (Helper.config.identd.enable) {
if (this.oidentdFile) {
log.warn("Using both identd and oidentd at the same time, this is most likely not intended.");
}
var server = net.createServer(this.serverConnection.bind(this));
server.listen({
port: Helper.config.identd.port || 113,
host: Helper.config.bind || Helper.config.host,
}, () => {
var address = server.address();
log.info(`Identd server available on ${colors.green(address.address + ":" + address.port)}`);
startedCallback(this);
});
} else {
startedCallback(this);
}
}
serverConnection(socket) {
socket.on("data", (data) => {
this.respondToIdent(socket, data);
socket.end();
});
}
respondToIdent(socket, data) {
data = data.toString().split(",");
const lport = parseInt(data[0]);
const fport = parseInt(data[1]);
if (lport < 1 || fport < 1 || lport > 65535 || fport > 65535) {
return;
}
for (var connection of this.connections.values()) {
if (connection.socket.remoteAddress === socket.remoteAddress
&& connection.socket.remotePort === fport
&& connection.socket.localPort === lport
&& connection.socket.localAddress === socket.localAddress) {
return socket.write(`${lport}, ${fport} : USERID : UNIX : ${connection.user}\r\n`);
}
}
socket.write(`${lport}, ${fport} : ERROR : NO-USER\r\n`);
}
addSocket(socket, user) {
const id = ++this.connectionId;
this.connections.set(id, {socket: socket, user: user});
if (this.oidentdFile) {
this.refresh();
}
return id;
}
removeSocket(id) {
this.connections.delete(id);
if (this.oidentdFile) {
this.refresh();
}
}
refresh() {
let file = "# Warning: file generated by The Lounge: changes will be overwritten!\n";
this.connections.forEach((connection) => {
file += `to ${connection.socket.remoteAddress}`
+ ` lport ${connection.socket.localPort}`
+ ` from ${connection.socket.localAddress}`
+ ` fport ${connection.socket.remotePort}`
+ ` { reply "${connection.user}" }\n`;
});
fs.writeFile(this.oidentdFile, file, {flag: "w+"}, function(err) {
if (err) {
log.error("Failed to update oidentd file!", err);
}
});
}
}
module.exports = Identification;