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Added MQTT authentication.

This commit is contained in:
Ylian Saint-Hilaire 2019-10-05 14:24:40 -07:00
parent 69e721e5cf
commit 1db0899a7d
6 changed files with 123 additions and 13 deletions
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15
certoperations.js
View File

@ -241,6 +241,21 @@ module.exports.CertificateOperations = function (parent) {
return obj.pki.getPublicKeyFingerprint(publickey, { encoding: "hex", md: obj.forge.md.sha384.create() });
};
// Return the SHA384 hash of the certificate, return hex
obj.getCertHashSha1 = function (cert) {
try {
var md = obj.forge.md.sha1.create();
md.update(obj.forge.asn1.toDer(obj.pki.certificateToAsn1(obj.pki.certificateFromPem(cert))).getBytes());
return md.digest().toHex();
} catch (ex) {
// If this is not an RSA certificate, hash the raw PKCS7 out of the PEM file
var x1 = cert.indexOf('-----BEGIN CERTIFICATE-----'), x2 = cert.indexOf('-----END CERTIFICATE-----');
if ((x1 >= 0) && (x2 > x1)) {
return obj.crypto.createHash('sha1').update(Buffer.from(cert.substring(x1 + 27, x2), 'base64')).digest('hex');
} else { console.log('ERROR: Unable to decode certificate.'); return null; }
}
};
// Return the SHA384 hash of the certificate, return hex
obj.getCertHash = function (cert) {
try {

2
meshcentral.js
View File

@ -826,7 +826,7 @@ function CreateMeshCentralServer(config, args) {
obj.apfserver = require('./apfserver.js').CreateApfServer(obj, obj.db, obj.args);
// Create MQTT Broker to hook into webserver and mpsserver
if (obj.config.settings.mqtt != null) { obj.mqttbroker = require("./mqttbroker.js").CreateMQTTBroker(obj, obj.db, obj.args); }
if ((typeof obj.config.settings.mqtt == 'object') && (typeof obj.config.settings.mqtt.auth == 'object') && (typeof obj.config.settings.mqtt.auth.keyid == 'string') && (typeof obj.config.settings.mqtt.auth.key == 'string')) { obj.mqttbroker = require("./mqttbroker.js").CreateMQTTBroker(obj, obj.db, obj.args); }
// Start the web server and if needed, the redirection web server.
obj.webserver = require('./webserver.js').CreateWebServer(obj, obj.db, obj.args, obj.certificates);

48
meshuser.js
View File

@ -2876,6 +2876,54 @@ module.exports.CreateMeshUser = function (parent, db, ws, req, args, domain, use
}
break;
}
case 'getmqttlogin': {
var err = null;
if (parent.parent.mqttbroker == null) { err = 'MQTT not supported on this server'; }
if (common.validateString(command.nodeid, 1, 1024) == false) { err = 'Invalid nodeid'; } // Check the nodeid
// Handle any errors
if (err != null) { if (command.responseid != null) { try { ws.send(JSON.stringify({ action: 'getmqttlogin', responseid: command.responseid, result: err })); } catch (ex) { } } break; }
var nodeid = command.nodeid;
if ((nodeid.split('/').length == 3) && (nodeid.split('/')[1] == domain.id)) { // Validate the domain, operation only valid for current domain
// Get the device
db.Get(nodeid, function (err, nodes) {
if ((nodes == null) || (nodes.length != 1)) { if (command.responseid != null) { try { ws.send(JSON.stringify({ action: 'getmqttlogin', responseid: command.responseid, result: 'Invalid node id' })); } catch (ex) { } return; } }
var node = nodes[0];
// Get the device group for this node
var mesh = parent.meshes[node.meshid];
if (mesh) {
// Check if this user has rights to do this
if ((mesh.links[user._id] != null) && (mesh.links[user._id].rights == 0xFFFFFFFF)) {
var token = parent.parent.mqttbroker.generateLogin(mesh._id, node._id);
var r = { action: 'getmqttlogin', responseid: command.responseid, nodeid: node._id, user: token.user, pass: token.pass };
const serverName = parent.getWebServerName(domain);
// Add MPS URL
if (parent.parent.mpsserver != null) {
r.mpsCertHashSha384 = parent.parent.certificateOperations.getCertHash(parent.parent.mpsserver.certificates.mps.cert);
r.mpsCertHashSha1 = parent.parent.certificateOperations.getCertHashSha1(parent.parent.mpsserver.certificates.mps.cert);
r.mpsUrl = 'mqtts://' + serverName + ':' + ((args.mpsaliasport != null) ? args.mpsaliasport : args.mpsport) + '/';
}
// Add WS URL
var xdomain = (domain.dns == null) ? domain.id : '';
if (xdomain != '') xdomain += "/";
var httpsPort = ((args.aliasport == null) ? args.port : args.aliasport); // Use HTTPS alias port is specified
r.wsUrl = "ws" + (args.notls ? '' : 's') + "://" + serverName + ":" + httpsPort + "/" + xdomain + "mqtt.ashx";
r.wsTrustedCert = parent.isTrustedCert(domain);
try { ws.send(JSON.stringify(r)); } catch (ex) { }
} else {
if (command.responseid != null) { try { ws.send(JSON.stringify({ action: 'getmqttlogin', responseid: command.responseid, result: 'Unable to perform this operation' })); } catch (ex) { } }
}
}
});
}
break;
}
case 'amt': {
if (common.validateString(command.nodeid, 1, 1024) == false) break; // Check nodeid
if (common.validateInt(command.mode, 0, 3) == false) break; // Check connection mode

40
mqttbroker.js
View File

@ -16,26 +16,46 @@ module.exports.CreateMQTTBroker = function (parent, db, args) {
obj.handle = obj.aedes.handle;
obj.connections = {}; // NodesID --> client array
// Generate a username and password for MQTT login
obj.generateLogin = function (meshid, nodeid) {
const meshidsplit = meshid.split('/'), nodeidsplit = nodeid.split('/');
const xmeshid = meshidsplit[2], xnodeid = nodeidsplit[2], xdomainid = meshidsplit[1];
const username = 'MCAuth1:' + xnodeid + ':' + xmeshid + ':' + xdomainid;
const nonce = Buffer.from(parent.crypto.randomBytes(9), 'binary').toString('base64');
return { meshid: meshid, nodeid: nodeid, user: username, pass: parent.config.settings.mqtt.auth.keyid + ':' + nonce + ':' + parent.crypto.createHash('sha384').update(username + ':' + nonce + ':' + parent.config.settings.mqtt.auth.key).digest("base64") };
}
// Connection Authentication
obj.aedes.authenticate = function (client, username, password, callback) {
// TODO: add authentication handler
obj.parent.debug("mqtt", "Authentication with " + username + ":" + password + ":" + client.id + ", " + client.conn.xtransport + "://" + cleanRemoteAddr(client.conn.xip));
obj.parent.debug("mqtt", "Authentication User:" + username + ", Pass:" + password.toString() + ", ClientID:" + client.id + ", " + client.conn.xtransport + "://" + cleanRemoteAddr(client.conn.xip));
// Parse the username and password
var usersplit = username.split(':');
if (usersplit.length != 5) { callback(null, false); return; }
var passsplit = password.toString().split(':');
if ((usersplit.length !== 4) || (passsplit.length !== 3)) { obj.parent.debug("mqtt", "Invalid user/pass format, " + client.conn.xtransport + "://" + cleanRemoteAddr(client.conn.xip)); callback(null, false); return; }
if (usersplit[0] !== 'MCAuth1') { obj.parent.debug("mqtt", "Invalid auth method, " + client.conn.xtransport + "://" + cleanRemoteAddr(client.conn.xip)); callback(null, false); return; }
// Check authentication
if (passsplit[0] !== parent.config.settings.mqtt.auth.keyid) { obj.parent.debug("mqtt", "Invalid auth keyid, " + client.conn.xtransport + "://" + cleanRemoteAddr(client.conn.xip)); callback(null, false); return; }
if (parent.crypto.createHash('sha384').update(username + ':' + passsplit[1] + ':' + parent.config.settings.mqtt.auth.key).digest("base64") !== passsplit[2]) { obj.parent.debug("mqtt", "Invalid password, " + client.conn.xtransport + "://" + cleanRemoteAddr(client.conn.xip)); callback(null, false); return; }
// Setup the identifiers
var xnodeid = usersplit[1];
const xnodeid = usersplit[1];
var xmeshid = usersplit[2];
var xdomainid = usersplit[3];
const xdomainid = usersplit[3];
// Check the domain
if ((typeof client.conn.xdomain == 'object') && (xdomainid != client.conn.xdomain.id)) { obj.parent.debug("mqtt", "Invalid domain connection, " + client.conn.xtransport + "://" + cleanRemoteAddr(client.conn.xip)); callback(null, false); return; }
// Convert meshid from HEX to Base64 if needed
if (xmeshid.length == 96) { xmeshid = Buffer.from(xmeshid, 'hex').toString('base64'); }
if ((xmeshid.length != 64) || (xnodeid.length != 64)) { callback(null, false); return; }
if (xmeshid.length === 96) { xmeshid = Buffer.from(xmeshid, 'hex').toString('base64'); }
if ((xmeshid.length !== 64) || (xnodeid.length != 64)) { callback(null, false); return; }
client.xdbNodeKey = 'node/' + xdomainid + '/' + xnodeid;
client.xdbMeshKey = 'mesh/' + xdomainid + '/' + xmeshid;
//console.log(obj.generateLogin(client.xdbMeshKey, client.xdbNodeKey));
// Check if this node exists in the database
db.Get(client.xdbNodeKey, function (err, nodes) {
if ((nodes == null) || (nodes.length != 1)) { callback(null, false); return; } // Node does not exist
@ -75,6 +95,7 @@ module.exports.CreateMQTTBroker = function (parent, db, args) {
// Check if a client can publish a packet
obj.aedes.authorizePublish = function (client, packet, callback) {
// TODO: add authorized publish control
//console.log(packet);
obj.parent.debug("mqtt", "AuthorizePublish, " + client.conn.xtransport + "://" + cleanRemoteAddr(client.conn.xip));
callback(null);
}
@ -82,13 +103,14 @@ module.exports.CreateMQTTBroker = function (parent, db, args) {
// Check if a client can publish a packet
obj.aedes.authorizeSubscribe = function (client, sub, callback) {
// TODO: add subscription control here
obj.parent.debug("mqtt", "AuthorizeSubscribe, " + client.conn.xtransport + "://" + cleanRemoteAddr(client.conn.xip));
obj.parent.debug("mqtt", "AuthorizeSubscribe \"" + sub.topic + "\", " + client.conn.xtransport + "://" + cleanRemoteAddr(client.conn.xip));
callback(null, sub);
}
// Check if a client can publish a packet
// Check if a client can forward a packet
obj.aedes.authorizeForward = function (client, packet) {
// TODO: add forwarding control
//console.log(packet);
obj.parent.debug("mqtt", "AuthorizeForward, " + client.conn.xtransport + "://" + cleanRemoteAddr(client.conn.xip));
//return packet;
return packet;

24
views/default.handlebars
View File

@ -2274,6 +2274,24 @@
QV('agentInvitationLinkDiv', true);
break;
}
case 'getmqttlogin': {
if ((currentNode == null) || (currentNode._id != message.nodeid) || (xxdialogMode != null)) return;
var x = "These settings can be used to connect MQTT for this device.<br /><br />";
delete message.action;
delete message.nodeid;
x += '<textarea readonly=readonly style=width:100%;resize:none;height:100px;overflow:auto;font-size:12px readonly>' + JSON.stringify(message) + '</textarea>';
/*
x += addHtmlValue('Username', '<input style=width:230px readonly value="' + message.user + '" />');
x += addHtmlValue('Password', '<input style=width:230px readonly value="' + message.pass + '" />');
x += addHtmlValue('WS URL', '<input style=width:230px readonly value="' + message.wsUrl + '" />');
if (message.mpsUrl && message.mpsCertHash) {
x += addHtmlValue('MPS URL', '<input style=width:230px readonly value="' + message.mpsUrl + '" />');
x += addHtmlValue('MPS Cert Hash', '<input style=width:230px readonly value="' + message.mpsCertHash + '" />');
}
*/
setDialogMode(2, "MQTT Credentials", 1, null, x);
break;
}
case 'stopped': { // Server is stopping.
// Disconnect
autoReconnect = false;
@ -4280,6 +4298,9 @@
x += '<a href=# onclick=p10clickOnce("' + node._id + '","WSCP",22) title="Requires Microsoft ClickOnce support in your browser.">WinSCP</a>&nbsp;';
}
}
// MQTT options
if ((meshrights == 0xFFFFFFFF) && (features & 0x00400000)) { x += '<a href=# onclick=p10showMqttLoginDialog("' + node._id + '") title="Get MQTT login credentials for this device.">MQTT Login</a>&nbsp;'; }
x += '</div><br>'
QH('p10html3', x);
@ -4664,6 +4685,9 @@
setDialogMode(2, "MeshCentral Router", 1, null, x, "fileDownload");
}
// Request MQTT login credentials
function p10showMqttLoginDialog(nodeid) { meshserver.send({ action: 'getmqttlogin', nodeid: nodeid }); }
// Show MeshCmd dialog
function p10showMeshCmdDialog(mode, nodeid) {
if (xxdialogMode) return;

7
webserver.js
View File

@ -1505,6 +1505,7 @@ module.exports.CreateWebServer = function (parent, db, args, certificates) {
if ((domain.auth == 'sspi') || (domain.auth == 'ldap')) { features += 0x00080000; } // LDAP or SSPI in use, warn that users must login first before adding a user to a group.
if (domain.amtacmactivation) { features += 0x00100000; } // Intel AMT ACM activation/upgrade is possible
if (domain.usernameisemail) { features += 0x00200000; } // Username is email address
if (parent.mqttbroker != null) { features += 0x00400000; } // This server supports MQTT channels
// Create a authentication cookie
const authCookie = obj.parent.encodeCookie({ userid: user._id, domainid: domain.id, ip: cleanRemoteAddr(req.ip) }, obj.parent.loginCookieEncryptionKey);
@ -1617,7 +1618,7 @@ module.exports.CreateWebServer = function (parent, db, args, certificates) {
}
// Return true if it looks like we are using a real TLS certificate.
function isTrustedCert(domain) {
obj.isTrustedCert = function(domain) {
if (obj.args.notls == true) return false; // We are not using TLS, so not trusted cert.
if ((domain != null) && (typeof domain.trustedcert == 'boolean')) return domain.trustedcert; // If the status of the cert specified, use that.
if (typeof obj.args.trustedcert == 'boolean') return obj.args.trustedcert; // If the status of the cert specified, use that.
@ -2886,7 +2887,7 @@ module.exports.CreateWebServer = function (parent, db, args, certificates) {
res.set({ 'Cache-Control': 'no-cache, no-store, must-revalidate', 'Pragma': 'no-cache', 'Expires': '0', 'Content-Type': 'text/plain', 'Content-Disposition': 'attachment; filename="' + scriptInfo.rname + '"' });
var data = scriptInfo.data;
var cmdoptions = { wgetoptionshttp: '', wgetoptionshttps: '', curloptionshttp: '-L ', curloptionshttps: '-L ' }
if (isTrustedCert(domain) != true) {
if (obj.isTrustedCert(domain) != true) {
cmdoptions.wgetoptionshttps += '--no-check-certificate ';
cmdoptions.curloptionshttps += '-k ';
}
@ -3350,7 +3351,7 @@ module.exports.CreateWebServer = function (parent, db, args, certificates) {
// For example: https://localhost/createLoginToken.ashx?user=admin&pass=admin&a=3
// It's not advised to use this to create login tokens since the URL is often logged and you got credentials in the URL.
// Since it's bad, it's only offered when an untrusted certificate is used as a way to help developers get started.
if (isTrustedCert() == false) {
if (obj.isTrustedCert() == false) {
obj.app.get(url + 'createLoginToken.ashx', function (req, res) {
// A web socket session can be authenticated in many ways (Default user, session, user/pass and cookie). Check authentication here.
if ((req.query.user != null) && (req.query.pass != null)) {