136 lines
3.5 KiB
JavaScript
136 lines
3.5 KiB
JavaScript
var dgram = require('dgram');
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var net = require('net');
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const EventEmitter = require('events');
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const messages = require('./messages');
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class FindUnits extends EventEmitter {
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constructor() {
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super();
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this.finder = dgram.createSocket('udp4');
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var _this = this;
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this.finder.on('message', function (message, remote) {
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_this.foundServer(message, remote);
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}).on('close', function() {
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console.log('finder closed');
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});
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}
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search() {
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var _this = this;
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this.finder.bind(function() {
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_this.finder.setBroadcast(true);
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_this.finder.setMulticastTTL(128);
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_this.sendServerBroadcast();
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});
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}
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foundServer(message, remote) {
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console.log('Found something');
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var server = {
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address: remote.address,
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type: message.readInt32LE(0),
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port: message.readInt16LE(8),
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gatewayType: message.readUInt8(10),
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gatewaySubtype: message.readUInt8(11),
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gatewayName: message.toString('utf8', 12, 28)
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};
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console.log(' type: ' + server.type + ', host: ' + server.address + ':' + server.port + ', identified as ' + server.gatewayName);
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if (server.type === 2) {
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this.emit('serverFound', server);
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}
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}
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sendServerBroadcast() {
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var message = new Uint8Array(8);
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message[0] = 1;
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this.finder.send(message, 0, message.length, 1444, "255.255.255.255");
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console.log("Looking for ScreenLogic hosts...");
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}
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close() {
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this.finder.close();
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}
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}
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class UnitConnection extends EventEmitter {
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constructor(server) {
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super();
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this.server = server;
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this.client = new net.Socket();
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var _this = this;
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this.client.on('data', function(msg) {
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_this.onClientMessage(msg);
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}).on('close', function(had_error) {
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console.log('unit connection closed');
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});
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}
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close() {
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this.client.end();
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}
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connect() {
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console.log("connecting...");
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var _this = this;
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this.client.connect(this.server.port, this.server.address, function() {
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_this.onConnected();
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});
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}
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onConnected() {
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console.log('connected');
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console.log('sending init message...');
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this.client.write('CONNECTSERVERHOST\r\n\r\n');
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console.log('sending challenge message...');
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this.client.write(new messages.SLChallengeMessage().toBuffer());
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}
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login() {
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console.log('sending login message...');
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this.client.write(new messages.SLLoginMessage().toBuffer());
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}
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getPoolStatus() {
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console.log('sending pool status query...');
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this.client.write(new messages.SLPoolStatusMessage().toBuffer());
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}
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getControllerConfig() {
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console.log('sending controller config query...');
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this.client.write(new messages.SLControllerConfigMessage().toBuffer());
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}
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onClientMessage(msg) {
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console.log('received message of length ' + msg.length);
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var msgType = msg.readInt16LE(2);
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if (msgType === 15) {
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console.log(" it's a challenge response");
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this.login();
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} else if (msgType === 28) {
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console.log(" it's a login response");
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this.emit('loggedIn');
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} else if (msgType === 12527) {
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console.log(" it's pool status");
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this.emit('poolStatus', new messages.SLPoolStatusMessage(msg));
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} else if (msgType === 12533) {
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console.log(" it's controller configuration");
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this.emit('controllerConfig', new messages.SLControllerConfigMessage(msg));
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}
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}
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}
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/* debug print full buffer contents:
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for (const value of buf.values()) {
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console.log(value.toString(16));
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}
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*/
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module.exports = {
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FindUnits,
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UnitConnection
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}
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