78 lines
2.0 KiB
JavaScript
78 lines
2.0 KiB
JavaScript
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var _ = require("lodash");
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var net = require("net");
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var Helper = require("./helper");
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function Identd() {
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// used to store who is connecting...
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this.connections = [];
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this.server = null;
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this.config = {
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enabled: false,
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port: 30113,
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default: "shout"
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};
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};
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Identd.prototype.respond = function(remoteIp, localPort, remotePort) {
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// Build the first part (always the same)
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var response = localPort + ", " + remotePort + " : ";
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var connection = _.where(this.connections, {"remoteIp": remoteIp, "remotePort": remotePort, "localPort": localPort});
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if (connection.length > 0) {
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// We have some connections, but we only want the first
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connection = _.first(connection);
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response += " USERID : UNIX : " + connection.username;
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// We're done with that connection. Remove it
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this.removeConnection(connection);
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} else {
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response += " ERROR : NOUSER";
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}
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// responses must end with CR+LF
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return response + "\r\n";
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};
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Identd.prototype.parse = function(request) {
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// myPort, theirPort\r\n
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request = request.split(/,\s*/);
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if (request.length == 2) {
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var localPort = parseInt(request[0]),
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remotePort = parseInt(request[1]);
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}
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return [localPort, remotePort];
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};
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Identd.prototype.start = function(config) {
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_.merge(this.config, config.identd);
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if (this.config.enabled) {
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var self = this;
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// create the server
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this.server = net.createServer(function(socket) {
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socket.on('data', function(data) {
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var parsed = this.parse(data);
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// parse and generate a response
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var response = this.respond(socket.remoteAddress, parsed[0], parsed[1]);
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socket.write(response);
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socket.end();
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});
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});
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console.log("Starting identd on " + this.config.port);
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this.server.listen(this.config.port);
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}
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return self;
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};
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Identd.prototype.addConnection = function(connection) {
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if (this.config.enabled)
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this.connections.push(connection);
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};
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Identd.prototype.removeConnection = function(connection) {
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if (this.config.enabled)
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this.connections = _.without(this.connections, connection);
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};
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module.exports = new Identd().start(Helper.getConfig());
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