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Put in the groundwork for web relay with multiple relay DNS names.

This commit is contained in:
Ylian Saint-Hilaire 2022-07-10 01:32:11 -07:00
parent 1bec66a241
commit a0ea6ead09
4 changed files with 25 additions and 19 deletions
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5
apprelays.js
View File

@ -69,7 +69,7 @@ function SerialTunnel(options) {
}
// Construct a Web relay object
module.exports.CreateWebRelaySession = function (parent, db, req, args, domain, userid, nodeid, addr, port, appid) {
module.exports.CreateWebRelaySession = function (parent, db, req, args, domain, userid, nodeid, addr, port, appid, sessionid) {
const obj = {};
obj.parent = parent;
obj.lastOperation = Date.now();
@ -79,6 +79,7 @@ module.exports.CreateWebRelaySession = function (parent, db, req, args, domain,
obj.addr = addr;
obj.port = port;
obj.appid = appid;
obj.sessionid = sessionid;
var pendingRequests = [];
var nextTunnelId = 1;
var tunnels = {};
@ -199,7 +200,7 @@ module.exports.CreateWebRelaySession = function (parent, db, req, args, domain,
for (var i in pendingRequests) { if (pendingRequests[i][2] == true) { pendingRequests[i][1].close(); } else { pendingRequests[i][1].end(); } }
// Notify of session closure
if (obj.onclose) { obj.onclose(obj.userid + '/' + obj.sessionId); }
if (obj.onclose) { obj.onclose(obj.sessionid); }
// Cleanup
delete obj.userid;

6
meshcentral.js
View File

@ -1649,8 +1649,12 @@ function CreateMeshCentralServer(config, args) {
obj.webserver = require('./webserver.js').CreateWebServer(obj, obj.db, obj.args, obj.certificates, obj.StartEx5);
if (obj.redirserver != null) { obj.redirserver.hookMainWebServer(obj.certificates); }
// Change RelayDNS to a array of strings
if (typeof obj.args.relaydns == 'string') { obj.args.relaydns = [obj.args.relaydns]; }
if (obj.common.validateStrArray(obj.args.relaydns, 1) == false) { delete obj.args.relaydns; }
// Start the HTTP relay web server if needed
if ((typeof obj.args.relaydns != 'string') && (typeof obj.args.relayport == 'number') && (obj.args.relayport != 0)) {
if ((obj.args.relaydns != null) && (typeof obj.args.relayport == 'number') && (obj.args.relayport != 0)) {
obj.webrelayserver = require('./webrelayserver.js').CreateWebRelayServer(obj, obj.db, obj.args, obj.certificates, function () { });
}

2
webrelayserver.js
View File

@ -207,7 +207,7 @@ module.exports.CreateWebRelayServer = function (parent, db, args, certificates,
if (xrelaySession != null) { xrelaySession.close(); delete relaySessions[req.session.userid + '/' + req.session.x]; }
// Create a web relay session
const relaySession = require('./apprelays.js').CreateWebRelaySession(obj, db, req, args, domain, userid, nodeid, addr, port, appid);
const relaySession = require('./apprelays.js').CreateWebRelaySession(obj, db, req, args, domain, userid, nodeid, addr, port, appid, xrelaySession);
relaySession.onclose = function (sessionId) {
// Remove the relay session
delete relaySessions[sessionId];

31
webserver.js
View File

@ -88,7 +88,7 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
// Web relay sessions
var webRelayNextSessionId = 1;
var webRelaySessions = {} // RelayID --> Web Mutli-Tunnel
var webRelaySessions = {} // UserId/SessionId/Host --> Web Relay Session
var webRelayCleanupTimer = null;
// Mesh Rights
@ -2871,8 +2871,8 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
webstate: encodeURIComponent(webstate).replace(/'/g, '%27'),
amtscanoptions: amtscanoptions,
pluginHandler: (parent.pluginHandler == null) ? 'null' : parent.pluginHandler.prepExports(),
webRelayPort: ((typeof args.relaydns == 'string') ? ((typeof args.aliasport == 'number') ? args.aliasport : args.port) : ((parent.webrelayserver != null) ? ((typeof args.relayaliasport == 'number') ? args.relayaliasport : parent.webrelayserver.port) : 0)),
webRelayDns: ((typeof args.relaydns == 'string') ? args.relaydns : '')
webRelayPort: ((args.relaydns != null) ? ((typeof args.aliasport == 'number') ? args.aliasport : args.port) : ((parent.webrelayserver != null) ? ((typeof args.relayaliasport == 'number') ? args.relayaliasport : parent.webrelayserver.port) : 0)),
webRelayDns: ((args.relaydns != null) ? args.relaydns[0] : '')
}, dbGetFunc.req, domain), user);
}
xdbGetFunc.req = req;
@ -5772,7 +5772,7 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
// Handle all incoming web sockets, see if some need to be handled as web relays
obj.app.ws('/*', function (ws, req, next) {
if ((obj.webRelayRouter != null) && (req.hostname == obj.args.relaydns)) { handleWebRelayWebSocket(ws, req); return; }
if ((obj.webRelayRouter != null) && (obj.args.relaydns.indexOf(req.hostname) >= 0)) { handleWebRelayWebSocket(ws, req); return; }
return next();
});
@ -5876,7 +5876,7 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
}
// If this is a web relay connection, handle it here.
if ((obj.webRelayRouter != null) && (req.hostname == obj.args.relaydns)) {
if ((obj.webRelayRouter != null) && (obj.args.relaydns.indexOf(req.hostname) >= 0)) {
if (['GET', 'POST', 'PUT', 'HEAD'].indexOf(req.method) >= 0) { return obj.webRelayRouter(req, res); } else { res.sendStatus(404); return; }
}
@ -6580,12 +6580,12 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
// Setup web relay on this web server if needed
// We set this up when a DNS name is used as a web relay instead of a port
if (typeof obj.args.relaydns == 'string') {
if (obj.args.relaydns != null) {
obj.webRelayRouter = require('express').Router();
// This is the magic URL that will setup the relay session
obj.webRelayRouter.get('/control-redirect.ashx', function (req, res, next) {
if (req.headers.host != obj.args.relaydns) { res.sendStatus(404); return; }
if (obj.args.relaydns.indexOf(req.hostname) == -1) { res.sendStatus(404); return; }
if ((req.session.userid == null) && obj.args.user && obj.users['user//' + obj.args.user.toLowerCase()]) { req.session.userid = 'user//' + obj.args.user.toLowerCase(); } // Use a default user if needed
res.set({ 'Cache-Control': 'no-store' });
parent.debug('web', 'webRelaySetup');
@ -6613,7 +6613,8 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
const appid = parseInt(req.query.appid);
// Check to see if we already have a multi-relay session that matches exactly this device and port for this user
const xrelaySession = webRelaySessions[req.session.userid + '/' + req.session.x];
const xrelaySessionId = req.session.userid + '/' + req.session.x + '/' + req.hostname;
const xrelaySession = webRelaySessions[xrelaySessionId];
if ((xrelaySession != null) && (xrelaySession.domain.id == domain.id) && (xrelaySession.userid == userid) && (xrelaySession.nodeid == nodeid) && (xrelaySession.addr == addr) && (xrelaySession.port == port) && (xrelaySession.appid == appid)) {
// We found an exact match, we are all setup already, redirect to root
res.redirect('/');
@ -6623,11 +6624,11 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
// There is a relay session, but it's not correct, close it.
if (xrelaySession != null) {
xrelaySession.close();
delete webRelaySessions[req.session.userid + '/' + req.session.x];
delete webRelaySessions[xrelaySessionId];
}
// Create a web relay session
const relaySession = require('./apprelays.js').CreateWebRelaySession(obj, db, req, args, domain, userid, nodeid, addr, port, appid);
const relaySession = require('./apprelays.js').CreateWebRelaySession(obj, db, req, args, domain, userid, nodeid, addr, port, appid, xrelaySessionId);
relaySession.onclose = function (sessionId) {
// Remove the relay session
delete webRelaySessions[sessionId];
@ -6636,7 +6637,7 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
}
// Set the multi-tunnel session
webRelaySessions[userid + '/' + req.session.x] = relaySession;
webRelaySessions[xrelaySessionId] = relaySession;
// Setup the cleanup timer if needed
if (obj.cleanupTimer == null) { webRelayCleanupTimer = setInterval(checkWebRelaySessionsTimeout, 10000); }
@ -6701,7 +6702,7 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
// Handle an incoming request as a web relay
function handleWebRelayRequest(req, res) {
if ((req.session.userid != null) && (req.session.x != null) && (obj.destroyedSessions[req.session.userid + '/' + req.session.x] == null)) {
var relaySession = webRelaySessions[req.session.userid + '/' + req.session.x];
var relaySession = webRelaySessions[req.session.userid + '/' + req.session.x + '/' + req.hostname];
if (relaySession != null) {
// The web relay session is valid, use it
relaySession.handleRequest(req, res);
@ -6718,7 +6719,7 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
// Handle an incoming websocket connection as a web relay
function handleWebRelayWebSocket(ws, req) {
if ((req.session.userid != null) && (req.session.x != null) && (obj.destroyedSessions[req.session.userid + '/' + req.session.x] == null)) {
var relaySession = webRelaySessions[req.session.userid + '/' + req.session.x];
var relaySession = webRelaySessions[req.session.userid + '/' + req.session.x + '/' + req.hostname];
if (relaySession != null) {
// The multi-tunnel session is valid, use it
relaySession.handleWebSocket(ws, req);
@ -7184,7 +7185,7 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
} else {
obj.tcpServer = obj.tlsServer.listen(port, addr, function () {
console.log('MeshCentral HTTPS server running on ' + certificates.CommonName + ':' + port + ((typeof args.aliasport == 'number') ? (', alias port ' + args.aliasport) : '') + '.');
if (typeof args.relaydns == 'string') { console.log('MeshCentral HTTPS relay server running on ' + args.relaydns + ':' + port + ((typeof args.aliasport == 'number') ? (', alias port ' + args.aliasport) : '') + '.'); }
if (args.relaydns != null) { console.log('MeshCentral HTTPS relay server running on ' + args.relaydns[0] + ':' + port + ((typeof args.aliasport == 'number') ? (', alias port ' + args.aliasport) : '') + '.'); }
});
obj.parent.updateServerState('servername', certificates.CommonName);
}
@ -7194,7 +7195,7 @@ module.exports.CreateWebServer = function (parent, db, args, certificates, doneF
} else {
obj.tcpServer = obj.app.listen(port, addr, function () {
console.log('MeshCentral HTTP server running on port ' + port + ((typeof args.aliasport == 'number') ? (', alias port ' + args.aliasport) : '') + '.');
if (typeof args.relaydns == 'string') { console.log('MeshCentral HTTP relay server running on ' + args.relaydns + ':' + port + ((typeof args.aliasport == 'number') ? (', alias port ' + args.aliasport) : '') + '.'); }
if (args.relaydns != null) { console.log('MeshCentral HTTP relay server running on ' + args.relaydns[0] + ':' + port + ((typeof args.aliasport == 'number') ? (', alias port ' + args.aliasport) : '') + '.'); }
});
obj.parent.updateServerState('http-port', port);
if (args.aliasport != null) { obj.parent.updateServerState('http-aliasport', args.aliasport); }