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Updated all agents except macOS and FreeBSD. New agents support compression.

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This commit is contained in:
Ylian Saint-Hilaire 2020-07-21 16:20:17 -07:00
parent d7df370215
commit 81d442f8ad
24 changed files with 64 additions and 3501 deletions
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agents/MeshCmd-signed.exe
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agents/MeshCmd64-signed.exe
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agents/meshcore.js
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@ -1189,20 +1189,22 @@ function createMeshCore(agent) {
var tunnel = tunnels[this.httprequest.index];
if (tunnel == null) return; // Stop duplicate calls.
// Sent tunnel statistics to the server
// Sent tunnel statistics to the server, only send this if compression was used.
if (this.bytesSent_uncompressed.toString() != this.bytesSent_actual.toString()) {
mesh.SendCommand({
action: 'tunnelCloseStats',
url: tunnel.url,
userid: tunnel.userid,
protocol: tunnel.protocol,
sessionid: tunnel.sessionid,
sent: this.bytesSent_uncompressed + '',
sentActual: this.bytesSent_actual + '',
sent: this.bytesSent_uncompressed.toString(),
sentActual: this.bytesSent_actual.toString(),
sentRatio: this.bytesSent_ratio,
received: this.bytesReceived_uncompressed + '',
receivedActual: this.bytesReceived_actual + '',
received: this.bytesReceived_uncompressed.toString(),
receivedActual: this.bytesReceived_actual.toString(),
receivedRatio: this.bytesReceived_ratio
});
}
//sendConsoleText("Tunnel #" + this.httprequest.index + " closed. Sent -> " + this.bytesSent_uncompressed + ' bytes (uncompressed), ' + this.bytesSent_actual + ' bytes (actual), ' + this.bytesSent_ratio + '% compression', this.httprequest.sessionid);
delete tunnels[this.httprequest.index];
@ -1340,7 +1342,7 @@ function createMeshCore(agent) {
var consentMessage = this.httprequest.username + " requesting remote terminal access. Grant access?", consentTitle = 'MeshCentral';
if (this.httprequest.soptions != null) {
if (this.httprequest.soptions.consentTitle != null) { consentTitle = this.httprequest.soptions.consentTitle; }
if (this.httprequest.soptions.consentMsgTerminal != null) { consentMessage = this.httprequest.soptions.consentMsgTerminal.replace('{0}', this.httprequest.username); }
if (this.httprequest.soptions.consentMsgTerminal != null) { consentMessage = this.httprequest.soptions.consentMsgTerminal.replace('{0}', this.httprequest.realname).replace('{1}', this.httprequest.username); }
}
this.httprequest.tpromise._consent = require('message-box').create(consentTitle, consentMessage, 30);
this.httprequest.tpromise._consent.retPromise = this.httprequest.tpromise;
@ -1547,7 +1549,7 @@ function createMeshCore(agent) {
var notifyMessage = this.ws.httprequest.username + " started a remote terminal session.", notifyTitle = "MeshCentral";
if (this.ws.httprequest.soptions != null) {
if (this.ws.httprequest.soptions.notifyTitle != null) { notifyTitle = this.ws.httprequest.soptions.notifyTitle; }
if (this.ws.httprequest.soptions.notifyMsgTerminal != null) { notifyMessage = this.ws.httprequest.soptions.notifyMsgTerminal.replace('{0}', this.ws.httprequest.username); }
if (this.ws.httprequest.soptions.notifyMsgTerminal != null) { notifyMessage = this.ws.httprequest.soptions.notifyMsgTerminal.replace('{0}', this.ws.httprequest.realname).replace('{1}', this.ws.httprequest.username); }
}
try { require('toaster').Toast(notifyTitle, notifyMessage); } catch (ex) { }
}

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agents/meshcore.txt
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10
meshagent.js
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@ -179,7 +179,9 @@ module.exports.CreateMeshAgent = function (parent, db, ws, req, args, domain) {
var taskLimiterOptions = { hash: meshcorehash, core: parent.parent.defaultMeshCores[corename], name: corename };
// If the agent supports compression, sent the core compressed.
if ((obj.agentInfo.capabilities & 0x80) && (parent.parent.defaultMeshCoresDeflate[corename])) { args.core = parent.parent.defaultMeshCoresDeflate[corename]; }
if ((obj.agentInfo.capabilities & 0x80) && (parent.parent.defaultMeshCoresDeflate[corename])) {
args.core = parent.parent.defaultMeshCoresDeflate[corename];
}
// Update new core with task limiting so not to flood the server. This is a high priority task.
obj.agentCoreUpdatePending = true;
@ -297,12 +299,10 @@ module.exports.CreateMeshAgent = function (parent, db, ws, req, args, domain) {
// Send compressed data
obj.agentUpdate.agentUpdateData = obj.agentExeInfo.zdata;
obj.agentUpdate.agentUpdateHash = obj.agentExeInfo.zhash;
//console.log('Sending compressed update agent', obj.agentExeInfo.zhashhex);
} else {
// Send uncompressed data
obj.agentUpdate.agentUpdateData = obj.agentExeInfo.data;
obj.agentUpdate.agentUpdateHash = obj.agentExeInfo.hash;
//console.log('Sending uncompressed update agent', obj.agentExeInfo.hashhex);
}
const len = Math.min(parent.parent.agentUpdateBlockSize, obj.agentUpdate.agentUpdateData.length - obj.agentUpdate.ptr);
@ -1415,6 +1415,10 @@ module.exports.CreateMeshAgent = function (parent, db, ws, req, args, domain) {
case 'tunnelCloseStats': {
// TODO: This this extra stats from the tunnel, you can merge this into the tunnel event in the database.
//console.log(command);
// Event the session closed compression data.
var event = { etype: 'node', action: 'sessioncompression', nodeid: obj.dbNodeKey, domain: domain.id, sent: command.sent, sentActual: command.sentActual, msg: 'Agent closed session with ' + command.sentRatio + '% agent to server compression. Sent: ' + command.sent + ', Compressed: ' + command.sentActual + '.' };
parent.parent.DispatchEvent(parent.CreateMeshDispatchTargets(obj.dbMeshKey, [obj.dbNodeKey]), obj, event);
break;
}
case 'plugin': {

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meshcentral-config-schema.json
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@ -51,6 +51,7 @@
"selfUpdate": { "type": "boolean", "default": false, "description": "When true, this server will attempt to self-update everyday after midnight." },
"browserPing": { "type": "integer", "minimum": 1, "description": "When specified, sends data to the browser at x seconds interval and expects a response from the browser." },
"browserPong": { "type": "integer", "minimum": 1, "description": "When specified, sends data to the browser at x seconds interval." },
"agentsInRam": { "type": "boolean", "default": false, "description": "Loads all agent binaries in RAM for faster agent updates." },
"agentPing": { "type": "integer", "minimum": 1, "description": "When specified, sends data to the agent at x seconds interval and expects a response from the agent." },
"agentPong": { "type": "integer", "minimum": 1, "description": "When specified, sends data to the agent at x seconds interval." },
"agentIdleTimeout": { "type": "integer", "minimum": 1 },

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meshcentral.js
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@ -649,14 +649,12 @@ function CreateMeshCentralServer(config, args) {
if (typeof obj.args.tlsoffload == 'string') { obj.args.tlsoffload = obj.args.tlsoffload.split(' ').join('').split(','); }
// Check if WebSocket compression is supported. It's broken in NodeJS v11.11 to v12.15
if ((obj.args.wscompression == true) || (obj.args.agentwscompression == true)) {
const verSplit = process.version.substring(1).split('.');
var ver = parseInt(verSplit[0]) + (parseInt(verSplit[1]) / 100);
if ((ver >= 11.11) && (ver <= 12.15)) {
if ((obj.args.wscompression === true) || (obj.args.agentwscompression === true)) { addServerWarning('WebSocket compression is disabled, this feature is broken in NodeJS v11.11 to v12.15.'); }
obj.args.wscompression = obj.args.agentwscompression = false;
obj.config.settings.wscompression = obj.config.settings.agentwscompression = false;
addServerWarning('WebSocket compression is disabled, this feature is broken in NodeJS v11.11 to v12.15.');
}
}
// Local console tracing
@ -2218,6 +2216,37 @@ function CreateMeshCentralServer(config, args) {
} else {
// Load the agent as-is
obj.meshAgentBinaries[archid].data = obj.fs.readFileSync(agentpath);
// Compress the agent using ZIP
var archive = require('archiver')('zip', { level: 9 }); // Sets the compression method.
const onZipData = function onZipData(buffer) { onZipData.x.zacc.push(buffer); }
const onZipEnd = function onZipEnd() {
// Concat all the buffer for create compressed zip agent
var concatData = Buffer.concat(onZipData.x.zacc);
delete onZipData.x.zacc;
// Hash the compressed binary
var hash = obj.crypto.createHash('sha384').update(concatData);
onZipData.x.zhash = hash.digest('binary');
onZipData.x.zhashhex = Buffer.from(onZipData.x.zhash, 'binary').toString('hex');
// Set the agent
onZipData.x.zdata = concatData;
onZipData.x.zsize = concatData.length;
console.log('Packed', onZipData.x.size, onZipData.x.zsize);
}
const onZipError = function onZipError() { delete onZipData.x.zacc; }
obj.meshAgentBinaries[archid].zacc = [];
onZipData.x = obj.meshAgentBinaries[archid];
onZipEnd.x = obj.meshAgentBinaries[archid];
onZipError.x = obj.meshAgentBinaries[archid];
archive.on('data', onZipData);
archive.on('end', onZipEnd);
archive.on('error', onZipError);
archive.append(obj.meshAgentBinaries[archid].data, { name: 'meshagent' });
archive.finalize();
}
}

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sample-config-advanced.json
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@ -40,6 +40,7 @@
"_compression": true,
"_wscompression": false,
"_agentwscompression": true,
"_agentsInRam": false,
"_webRTC": false,
"_nice404": false,
"_clickOnce": false,