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Workaround a race condition on meshagent sending coreinfo messages.

This commit is contained in:
Ylian Saint-Hilaire 2018-11-25 12:59:42 -08:00
parent 35245805fb
commit 532743dd1b
5 changed files with 57 additions and 59 deletions
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agents/MeshAgentOSXPackager.zip
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109
agents/meshcore.js
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@ -58,9 +58,10 @@ function createMeshCore(agent) {
*/
// MeshAgent JavaScript Core Module. This code is sent to and running on the mesh agent.
obj.meshCoreInfo = "MeshCore v6";
obj.meshCoreCapabilities = 14; // Capability bitmask: 1 = Desktop, 2 = Terminal, 4 = Files, 8 = Console, 16 = JavaScript
obj.loggedInUsers = null;
var meshCoreObj = { "action": "coreinfo", "value": "MeshCore v6", "caps": 14 }; // Capability bitmask: 1 = Desktop, 2 = Terminal, 4 = Files, 8 = Console, 16 = JavaScript
// Get the operating system description string
try { require('os').name().then(function (v) { meshCoreObj.osdesc = v; }); } catch (ex) { }
var meshServerConnectionState = 0;
var tunnels = {};
@ -90,19 +91,15 @@ function createMeshCore(agent) {
childProcess = require('child_process');
if (mesh.hasKVM == 1) { // if the agent is compiled with KVM support
// Check if this computer supports a desktop
try { if ((process.platform == 'win32') || (process.platform == 'darwin') || (require('monitor-info').kvm_x11_support)) { obj.meshCoreCapabilities |= 1; } } catch (ex) { }
try { if ((process.platform == 'win32') || (process.platform == 'darwin') || (require('monitor-info').kvm_x11_support)) { meshCoreObj.caps |= 1; } } catch (ex) { }
}
} else {
// Running in nodejs
obj.meshCoreInfo += '-NodeJS';
obj.meshCoreCapabilities = 8;
meshCoreObj.value += '-NodeJS';
meshCoreObj.caps = 8;
mesh = agent.getMeshApi();
}
// Get the operating system description string
var osDesc = null;
try { require('os').name().then(function (v) { osDesc = v; if (mesh.isControlChannelConnected) { mesh.SendCommand({ "action": "coreinfo", "value": obj.meshCoreInfo, "osdesc": osDesc }); } }); } catch (ex) { }
/*
var AMTScanner = require("AMTScanner");
var scan = new AMTScanner();
@ -139,31 +136,33 @@ function createMeshCore(agent) {
// Fetch the SMBios Tables
var SMBiosTables = null;
var SMBiosTablesRaw = null;
require('smbios').get(function (data) {
if (data != null) {
SMBiosTablesRaw = data;
SMBiosTables = require('smbios').parse(data)
if (mesh.isControlChannelConnected) { mesh.SendCommand({ "action": "smbios", "value": SMBiosTablesRaw }); }
try {
require('smbios').get(function (data) {
if (data != null) {
SMBiosTablesRaw = data;
SMBiosTables = require('smbios').parse(data)
if (mesh.isControlChannelConnected) { mesh.SendCommand({ "action": "smbios", "value": SMBiosTablesRaw }); }
// If SMBios tables say that AMT is present, try to connect MEI
if (SMBiosTables.amtInfo && (SMBiosTables.amtInfo.AMT == true)) {
// Try to load up the MEI module
try {
var amtMeiLib = require('amt-mei');
amtMei = new amtMeiLib();
amtMei.on('error', function (e) { amtMeiLib = null; amtMei = null; amtMeiConnected = -1; });
amtMeiConnected = 2;
sendPeriodicServerUpdate(1);
} catch (ex) { amtMeiLib = null; amtMei = null; amtMeiConnected = -1; }
// If SMBios tables say that AMT is present, try to connect MEI
if (SMBiosTables.amtInfo && (SMBiosTables.amtInfo.AMT == true)) {
// Try to load up the MEI module
try {
var amtMeiLib = require('amt-mei');
amtMei = new amtMeiLib();
amtMei.on('error', function (e) { amtMeiLib = null; amtMei = null; amtMeiConnected = -1; });
amtMeiConnected = 2;
sendPeriodicServerUpdate(1);
} catch (ex) { amtMeiLib = null; amtMei = null; amtMeiConnected = -1; }
}
}
}
});
});
} catch (ex) { sendConsoleText(ex); }
// Try to load up the WIFI scanner
try {
var wifiScannerLib = require('wifi-scanner');
wifiScanner = new wifiScannerLib();
wifiScanner.on('accessPoint', function (data) { sendConsoleText(JSON.stringify(data)); });
wifiScanner.on('accessPoint', function (data) { sendConsoleText(data); });
} catch (ex) { wifiScannerLib = null; wifiScanner = null; }
// Get our location (lat/long) using our public IP address
@ -931,8 +930,8 @@ function createMeshCore(agent) {
case 'border':
{
if ((args['_'].length == 1) && (args['_'][0] == 'on')) {
if (obj.loggedInUsers.length > 0) {
obj.borderManager.Start(obj.loggedInUsers[0]);
if (meshCoreObj.users.length > 0) {
obj.borderManager.Start(meshCoreObj.users[0]);
response = 'Border blinking is on.';
} else {
response = 'Cannot turn on border blinking, no logged in users.';
@ -946,11 +945,10 @@ function createMeshCore(agent) {
}
break;
*/
case 'users':
{
if (obj.loggedInUsers == null) { response = 'Active users are unknown.'; } else { response = 'Active Users: ' + obj.loggedInUsers.join(', ') + '.'; }
}
case 'users': {
if (meshCoreObj.users == null) { response = 'Active users are unknown.'; } else { response = 'Active Users: ' + meshCoreObj.users.join(', ') + '.'; }
break;
}
case 'toast': {
if (process.platform == 'win32') {
if (args['_'].length < 1) { response = 'Proper usage: toast "message"'; } else {
@ -1023,9 +1021,9 @@ function createMeshCore(agent) {
break;
}
case 'info': { // Return information about the agent and agent core module
response = 'Current Core: ' + obj.meshCoreInfo + '.\r\nAgent Time: ' + Date() + '.\r\nUser Rights: 0x' + rights.toString(16) + '.\r\nPlatform: ' + process.platform + '.\r\nCapabilities: ' + obj.meshCoreCapabilities + '.\r\nServer URL: ' + mesh.ServerUrl + '.';
response = 'Current Core: ' + meshCoreObj.value + '.\r\nAgent Time: ' + Date() + '.\r\nUser Rights: 0x' + rights.toString(16) + '.\r\nPlatform: ' + process.platform + '.\r\nCapabilities: ' + meshCoreObj.caps + '.\r\nServer URL: ' + mesh.ServerUrl + '.';
if (amtLmsState >= 0) { response += '\r\nBuilt-in LMS: ' + ['Disabled', 'Connecting..', 'Connected'][amtLmsState] + '.'; }
if (osDesc) { response += '\r\nOS: ' + osDesc + '.'; }
if (meshCoreObj.osdesc) { response += '\r\nOS: ' + meshCoreObj.osdesc + '.'; }
response += '\r\nModules: ' + addedModules.join(', ') + '.';
response += '\r\nServer Connection: ' + mesh.isControlChannelConnected + ', State: ' + meshServerConnectionState + '.';
response += '\r\lastMeInfo: ' + lastMeInfo + '.';
@ -1048,18 +1046,20 @@ function createMeshCore(agent) {
if (args['_'].length == 0) {
response = 'Proper usage: sendcaps (number)'; // Display correct command usage
} else {
var flags = { "action": "coreinfo", "value": obj.meshCoreInfo, "caps": parseInt(args['_'][0]) };
mesh.SendCommand(flags);
response = JSON.stringify(flags);
meshCoreObj.caps = parseInt(args['_'][0]);
mesh.SendCommand(meshCoreObj);
response = JSON.stringify(meshCoreObj);
}
break;
}
case 'sendosdesc': { // Send OS description
var os = osDesc;
if (args['_'].length > 0) { os = args['_'][0]; }
var flags = { "action": "coreinfo", "value": obj.meshCoreInfo, "osdesc": os };
mesh.SendCommand(flags);
response = JSON.stringify(flags);
if (args['_'].length > 0) {
meshCoreObj.osdesc = args['_'][0];
mesh.SendCommand(meshCoreObj);
response = JSON.stringify(meshCoreObj);
} else {
response = 'Proper usage: sendosdesc [os description]'; // Display correct command usage
}
break;
}
case 'args': { // Displays parsed command arguments
@ -1362,17 +1362,12 @@ function createMeshCore(agent) {
var oldNodeId = db.Get('OldNodeId');
if (oldNodeId != null) { mesh.SendCommand({ action: 'mc1migration', oldnodeid: oldNodeId }); }
// Update the server with basic info
var r = { "action": "coreinfo", "value": obj.meshCoreInfo, "caps": obj.meshCoreCapabilities };
if (osDesc != null) { r.osdesc = osDesc; }
mesh.SendCommand(r);
// Update the server with basic info, logged in users and more.
mesh.SendCommand(meshCoreObj);
// Send SMBios tables if present
if (SMBiosTablesRaw != null) { mesh.SendCommand({ "action": "smbios", "value": SMBiosTablesRaw }); }
// Update list of logged in users
if (obj.loggedInUsers != null) { mesh.SendCommand({ "action": "coreinfo", "v": { "users": obj.loggedInUsers } }); }
// Update the server on more advanced stuff, like Intel ME and Network Settings
meInfoStr = null;
sendPeriodicServerUpdate();
@ -1410,8 +1405,12 @@ function createMeshCore(agent) {
if (meinfo.OsHostname) { intelamt.host = meinfo.OsHostname; p = true; }
if (meinfo.UUID) { intelamt.uuid = meinfo.UUID; p = true; }
if (p == true) {
var meInfoStr = JSON.stringify({ "action": "coreinfo", "value": obj.meshCoreInfo, "intelamt": intelamt });
if (meInfoStr != lastMeInfo) { mesh.SendCommand(meInfoStr); lastMeInfo = meInfoStr; }
var meInfoStr = JSON.stringify(intelamt);
if (meInfoStr != lastMeInfo) {
meshCoreObj.intelamt = intelamt;
mesh.SendCommand(meshCoreObj);
lastMeInfo = meInfoStr;
}
}
} catch (ex) { }
});
@ -1492,8 +1491,8 @@ function createMeshCore(agent) {
var un = a[i].Domain ? (a[i].Domain + '\\' + a[i].Username) : (a[i].Username);
if (u.indexOf(un) == -1) { u.push(un); } // Only push users in the list once.
}
obj.loggedInUsers = u;
if (mesh.isControlChannelConnected) { mesh.SendCommand({ "action": "coreinfo", "users": u }); }
meshCoreObj.users = u;
mesh.SendCommand(meshCoreObj);
});
});
userSession.emit('changed');

2
meshagent.js
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@ -602,7 +602,7 @@ module.exports.CreateMeshAgent = function (parent, db, ws, req, args, domain) {
if (mesh == null) return;
// Get the node and change it if needed
obj.db.Get(obj.dbNodeKey, function (err, nodes) {
obj.db.Get(obj.dbNodeKey, function (err, nodes) { // TODO: THIS IS A BIG RACE CONDITION HERE, WE NEED TO FIX THAT. If this call is made twice at the same time on the same device, data will be missed.
if (nodes.length != 1) return;
var device = nodes[0];
if (device.agent) {

2
package.json
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@ -1,6 +1,6 @@
{
"name": "meshcentral",
"version": "0.2.3-c",
"version": "0.2.3-e",
"keywords": [
"Remote Management",
"Intel AMT",

3
views/default.handlebars
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@ -1937,8 +1937,7 @@
// If a device is no longer viewed, disconnect it.
if (multiDesktop[i].xxdelete == true) { multiDesktop[i].Stop(); delete multiDesktop[i]; }
else if (debugmode && multiDesktop[i].m && multiDesktop[i].m.onScreenSizeChange) {
// Adjust screen size change (JOKO) - This is not good.
multiDesktop[i].m.onScreenSizeChange();
mdeskAdjust(multiDesktop[i].m, multiDesktop[i].m.ScreenWidth, multiDesktop[i].m.ScreenHeight, multiDesktop[i].m.CanvasId); // Adjust screen size change
}
}
deskAdjust();