121 lines
2.6 KiB
JavaScript
121 lines
2.6 KiB
JavaScript
"use strict";
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const log = require("./log");
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const fs = require("fs");
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const net = require("net");
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const colors = require("chalk");
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const Helper = require("./helper");
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class Identification {
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constructor(startedCallback) {
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this.connectionId = 0;
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this.connections = new Map();
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if (typeof Helper.config.oidentd === "string") {
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this.oidentdFile = Helper.expandHome(Helper.config.oidentd);
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log.info(`Oidentd file: ${colors.green(this.oidentdFile)}`);
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this.refresh();
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}
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if (Helper.config.identd.enable) {
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if (this.oidentdFile) {
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log.warn(
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"Using both identd and oidentd at the same time, this is most likely not intended."
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);
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}
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const server = net.createServer(this.serverConnection.bind(this));
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server.on("error", (err) => log.error(`Identd server error: ${err}`));
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server.listen(
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{
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port: Helper.config.identd.port || 113,
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host: Helper.config.bind,
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},
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() => {
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const address = server.address();
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log.info(
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`Identd server available on ${colors.green(
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address.address + ":" + address.port
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)}`
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);
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startedCallback(this);
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}
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);
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} else {
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startedCallback(this);
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}
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}
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serverConnection(socket) {
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socket.on("error", (err) => log.error(`Identd socket error: ${err}`));
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socket.on("data", (data) => {
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this.respondToIdent(socket, data);
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socket.end();
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});
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}
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respondToIdent(socket, data) {
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data = data.toString().split(",");
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const lport = parseInt(data[0], 10) || 0;
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const fport = parseInt(data[1], 10) || 0;
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if (lport < 1 || fport < 1 || lport > 65535 || fport > 65535) {
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return;
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}
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for (const connection of this.connections.values()) {
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if (connection.socket.remotePort === fport && connection.socket.localPort === lport) {
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return socket.write(
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`${lport}, ${fport} : USERID : TheLounge : ${connection.user}\r\n`
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);
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}
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}
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socket.write(`${lport}, ${fport} : ERROR : NO-USER\r\n`);
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}
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addSocket(socket, user) {
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const id = ++this.connectionId;
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this.connections.set(id, {socket, user});
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if (this.oidentdFile) {
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this.refresh();
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}
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return id;
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}
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removeSocket(id) {
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this.connections.delete(id);
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if (this.oidentdFile) {
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this.refresh();
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}
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}
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refresh() {
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let file = "# Warning: file generated by The Lounge: changes will be overwritten!\n";
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this.connections.forEach((connection) => {
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file +=
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`fport ${connection.socket.remotePort}` +
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` lport ${connection.socket.localPort}` +
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` { reply "${connection.user}" }\n`;
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});
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fs.writeFile(this.oidentdFile, file, {flag: "w+"}, function(err) {
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if (err) {
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log.error("Failed to update oidentd file!", err);
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}
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});
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}
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}
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module.exports = Identification;
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