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https://github.com/Ylianst/MeshCentral.git
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Merge pull request #530 from jsastriawan/add_mqtt
Added MQTT support over WSS and multiplexed with MPS
This commit is contained in:
Ylian Saint-Hilaire
GitHub
commit
baff9c690a
@ -27,6 +27,7 @@ function CreateMeshCentralServer(config, args) {
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obj.redirserver = null;
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obj.mpsserver = null;
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obj.apfserver = null;
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obj.mqttbroker = null;
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obj.swarmserver = null;
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obj.mailserver = null;
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obj.amtEventHandler = null;
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@ -823,6 +824,9 @@ function CreateMeshCentralServer(config, args) {
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// Create APF server to hook into webserver
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obj.apfserver = require('./apfserver.js').CreateApfServer(obj, obj.db, obj.args);
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// Create MQTT Broker to hook into webserver and mpsserver
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obj.mqttbroker = require("./mqttbroker.js").CreateMQTTBroker(obj,obj.db,obj.args);
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// Start the web server and if needed, the redirection web server.
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obj.webserver = require('./webserver.js').CreateWebServer(obj, obj.db, obj.args, obj.certificates);
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if (obj.redirserver != null) { obj.redirserver.hookMainWebServer(obj.certificates); }
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63
mpsserver.js
63
mpsserver.js
@ -159,6 +159,44 @@ module.exports.CreateMpsServer = function (parent, db, args, certificates) {
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};
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}
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// required for TLS piping to MQTT broker
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function SerialTunnel(options) {
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var obj = new require('stream').Duplex(options);
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obj.forwardwrite = null;
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obj.updateBuffer = function (chunk) { this.push(chunk); };
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obj._write = function (chunk, encoding, callback) { if (obj.forwardwrite != null) { obj.forwardwrite(chunk); } else { console.err("Failed to fwd _write."); } if (callback) callback(); }; // Pass data written to forward
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obj._read = function (size) { }; // Push nothing, anything to read should be pushed from updateBuffer()
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return obj;
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}
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function getMQTTPacketLength(chunk) {
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var packet_len = 0;
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if (chunk.readUInt8(0)==16) {
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if (chunk.readUInt8(1) < 128 ) {
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packet_len += chunk.readUInt8(1) + 2;
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} else {
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// continuation bit, get real value and do next
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packet_len += (chunk.readUInt8(1) & 0x7F) + 2;
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if (chunk.readUInt8(2) < 128) {
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packet_len += 1 + chunk.readUInt8(2) * 128;
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} else {
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packet_len += 1 + (chunk.readUInt8(2) & 0x7F) * 128;
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if (chunk.readUInt8(3) < 128) {
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packet_len += 1 + chunk.readUInt8(3) * 128 * 128;
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} else {
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packet_len += 1 + (chunk.readUInt8(3) & 0x7F) * 128 * 128;
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if (chunk.readUInt8(4) < 128) {
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packet_len += 1 + chunk.readUInt8(4) * 128 * 128 * 128;
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} else {
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packet_len += 1 + (chunk.readUInt8(4) & 0x7F) * 128* 128 * 128;
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}
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}
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}
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}
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}
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return packet_len;
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}
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function onConnection(socket) {
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connectionCount++;
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if (obj.args.mpstlsoffload) {
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@ -182,6 +220,31 @@ module.exports.CreateMpsServer = function (parent, db, args, certificates) {
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if (socket.tag.accumulator.length < 3) return;
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//if (!socket.tag.clientCert.subject) { console.log("MPS Connection, no client cert: " + socket.remoteAddress); socket.write('HTTP/1.1 200 OK\r\nContent-Type: text/plain\r\nConnection: close\r\n\r\nMeshCentral2 MPS server.\r\nNo client certificate given.'); socket.end(); return; }
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if (socket.tag.accumulator.substring(0, 3) == "GET") { if (args.mpsdebug) { console.log("MPS Connection, HTTP GET detected: " + socket.remoteAddress); } socket.write("HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n<!DOCTYPE html><html><head><meta charset=\"UTF-8\"></head><body>MeshCentral2 MPS server.<br />Intel® AMT computers should connect here.</body></html>"); socket.end(); return; }
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var chunk = Buffer.from(socket.tag.accumulator,"binary");
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var packet_len = 0;
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if (chunk.readUInt8(0)==16) {
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packet_len = getMQTTPacketLength(chunk);
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}
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if (chunk.readUInt8(0)==16 && (socket.tag.accumulator.length < packet_len )) return;// minimum MQTT detection
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// check if it is MQTT, need more initial packet to probe
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if (chunk.readUInt8(0) == 16 && ((chunk.slice(4, 8).toString() === "MQTT") || (chunk.slice(5, 9).toString() === "MQTT")
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|| (chunk.slice(6, 10).toString() === "MQTT") || (chunk.slice(7, 11).toString() === "MQTT"))) {
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parent.debug("mps", "MQTT connection detected.");
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socket.removeAllListeners("data");
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socket.removeAllListeners("close");
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socket.setNoDelay(true);
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socket.serialtunnel = SerialTunnel();
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socket.on('data', function(b) { socket.serialtunnel.updateBuffer(Buffer.from(b,'binary'))});
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socket.serialtunnel.forwardwrite = function(b) { socket.write(b,"binary")}
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socket.on("close", function() { socket.serialtunnel.emit('end');});
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//pass socket wrapper to mqtt broker
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parent.mqttbroker.handle(socket.serialtunnel);
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socket.unshift(socket.tag.accumulator);
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return;
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}
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socket.tag.first = false;
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// Setup this node with certificate authentication
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54
mqttbroker.js
Normal file
54
mqttbroker.js
Normal file
@ -0,0 +1,54 @@
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/**
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* @description MQTT broker reference implementation based on AEDES
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* @author Joko Banu Sastriawan
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* @copyright Intel Corporation 2018-2019
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* @license Apache-2.0
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* @version v0.0.1
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*/
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module.exports.CreateMQTTBroker = function (parent, db, args) {
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// internal objects container
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var obj = {}
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obj.parent = parent;
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obj.db = db;
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obj.args = args;
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obj.aedes = require("aedes")();
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// argument parsing -- tbd
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// event handling and filtering
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// authentication filter
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obj.aedes.authenticate = function (client, username, password, callback) {
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// accept all user
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// TODO: add authentication handler
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obj.parent.debug("mqtt","Authentication with "+username+":"+password);
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callback(null, true);
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}
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// check if a client can publish a packet
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obj.aedes.authorizePublish = function (client, packet, callback) {
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//TODO: add authorized publish control
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obj.parent.debug("mqtt","AuthorizePublish");
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callback(null);
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}
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// check if a client can publish a packet
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obj.aedes.authorizeSubscribe = function (client, sub, callback) {
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//TODO: add subscription control here
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obj.parent.debug("mqtt","AuthorizeSubscribe");
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callback(null, sub);
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}
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// check if a client can publish a packet
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obj.aedes.authorizeForward = function (client, packet) {
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//TODO: add forwarding control
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obj.parent.debug("mqtt","AuthorizeForward");
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return packet;
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}
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obj.handle = obj.aedes.handle;
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return obj;
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}
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@ -27,6 +27,7 @@
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"sample-config.json"
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],
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"dependencies": {
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"aedes": "^0.39.0",
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"archiver": "^3.0.0",
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"body-parser": "^1.19.0",
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"cbor": "4.1.5",
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@ -39,9 +40,11 @@
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"ipcheck": "^0.1.0",
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"meshcentral": "*",
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"minimist": "^1.2.0",
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"mqtt": "^3.0.0",
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"multiparty": "^4.2.1",
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"nedb": "^1.8.0",
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"node-forge": "^0.8.4",
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"otplib": "^11.0.1",
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"ws": "^6.2.1",
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"xmldom": "^0.1.27",
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"yauzl": "^2.10.0"
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10
webserver.js
10
webserver.js
@ -3323,6 +3323,16 @@ module.exports.CreateWebServer = function (parent, db, args, certificates) {
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try { obj.meshAgentHandler.CreateMeshAgent(obj, obj.db, ws, req, obj.args, domain); } catch (e) { console.log(e); }
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});
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// MQTT broker over websocket
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obj.app.ws(url+'mqtt.ashx', function (ws, req) {
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var ser = SerialTunnel();
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ws.on('message', function(b) { ser.updateBuffer(Buffer.from(b,'binary'))});
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ser.forwardwrite = function(b) { ws.send(b,"binary")}
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ws.on("close", function() { ser.emit('end');});
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//pass socket wrapper to mqtt broker
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obj.parent.mqttbroker.handle(ser);
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})
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// Memory Tracking
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if (typeof obj.args.memorytracking == 'number') {
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obj.app.get(url + 'memorytracking.csv', function (req, res) {
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