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Added Intel AMT scanning using TCP connections

This commit is contained in:
Ylian Saint-Hilaire 2018-05-17 16:30:04 -07:00
parent cda8a54b0b
commit 37f73a2bb7
2 changed files with 34 additions and 10 deletions
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42
amtscanner.js
View File

@ -11,6 +11,7 @@ module.exports.CreateAmtScanner = function (parent) {
var obj = {};
obj.active = false;
obj.parent = parent;
obj.net = require('net');
obj.dns = require('dns');
obj.dgram = require('dgram');
obj.common = require('./common.js');
@ -107,26 +108,34 @@ module.exports.CreateAmtScanner = function (parent) {
// Look for all AMT computers that may be locally reachable and poll their presence
obj.performScan = function () {
//console.log('performScan');
if (obj.action == false) { return false; }
obj.parent.db.getLocalAmtNodes(function (err, docs) {
for (var i in obj.scanTable) { obj.scanTable[i].present = false; }
if (err == null && docs.length > 0) {
for (var i in docs) {
var doc = docs[i];
var host = doc.host.toLowerCase();
var doc = docs[i], host = doc.host.toLowerCase();
if ((host != '127.0.0.1') && (host != '::1') && (host != 'localhost')) { // Don't scan localhost
var scaninfo = obj.scanTable[doc._id];
if (scaninfo == undefined) {
var tag = obj.nextTag++;
obj.scanTableTags[tag] = obj.scanTable[doc._id] = scaninfo = { nodeinfo: doc, present: true, tag: tag, state: 0 };
//console.log('Scan ' + host + ', state=' + scaninfo.state + ', delta=' + delta);
} else {
scaninfo.present = true;
if (scaninfo.state == 1) {
var delta = Date.now() - scaninfo.lastpong;
if (delta > PeriodicScanTimeout) { // More than 10 seconds without a response, mark the node as unknown state
scaninfo.state = 0;
obj.parent.ClearConnectivityState(scaninfo.nodeinfo.meshid, scaninfo.nodeinfo._id, 4); // Clear connectivity state
}
var delta = Date.now() - scaninfo.lastpong;
//console.log('Rescan ' + host + ', state=' + scaninfo.state + ', delta=' + delta);
if ((scaninfo.state == 1) && (delta >= PeriodicScanTimeout)) {
// More than 2 minutes without a response, mark the node as unknown state
scaninfo.state = 0;
obj.parent.ClearConnectivityState(scaninfo.nodeinfo.meshid, scaninfo.nodeinfo._id, 4); // Clear connectivity state
} else if ((scaninfo.tcp == null) && ((scaninfo.state == 0) || isNaN(delta) || (delta > PeriodicScanTime))) {
// More than 30 seconds without a response, try TCP detection
obj.checkTcpPresence(host, (doc.intelamt.tls == 1) ? 16993 : 16992, scaninfo, function (tag, result) {
if (result == false) return;
tag.lastpong = Date.now();
if (tag.state == 0) { tag.state = 1; obj.parent.SetConnectivityState(tag.nodeinfo.meshid, tag.nodeinfo._id, tag.lastpong, 4, 7); } // Report power state as "present" (7).
});
}
}
// Start scanning this node
@ -146,7 +155,7 @@ module.exports.CreateAmtScanner = function (parent) {
return true;
}
// Check the presense of a specific Intel AMT computer
// Check the presense of a specific Intel AMT computer using RMCP
obj.checkAmtPresence = function (host, tag) {
var serverid = Math.floor(tag / 255);
var servertag = (tag % 255);
@ -286,5 +295,20 @@ module.exports.CreateAmtScanner = function (parent) {
return false;
}
// Check that we can connect TCP to a given port
obj.checkTcpPresence = function (host, port, scaninfo, func) {
//console.log('checkTcpPresence(' + host + ':' + port + ')');
var client = new obj.net.Socket();
client.scaninfo = scaninfo;
client.func = func;
client.setTimeout(10000);
client.connect(port, host, function () { if (this.scaninfo.tcp != null) { delete this.scaninfo.tcp; try { this.destroy(); } catch (ex) { } this.func(this.scaninfo, true); } });
client.on('data', function (data) { });
client.on('close', function () { if (this.scaninfo.tcp != null) { delete this.scaninfo.tcp; try { this.destroy(); } catch (ex) { } this.func(this.scaninfo, false); } });
client.on('error', function () { if (this.scaninfo.tcp != null) { delete this.scaninfo.tcp; try { this.destroy(); } catch (ex) { } this.func(this.scaninfo, false); } });
client.on('timeout', function () { if (this.scaninfo.tcp != null) { delete this.scaninfo.tcp; try { this.destroy(); } catch (ex) { } this.func(this.scaninfo, false); } });
scaninfo.tcp = client;
}
return obj;
}

2
package.json
View File

@ -1,6 +1,6 @@
{
"name": "meshcentral",
"version": "0.1.7-l",
"version": "0.1.7-m",
"keywords": [
"Remote Management",
"Intel AMT",