mirror of
https://github.com/Ylianst/MeshCentral.git
synced 2024-12-24 22:25:52 -05:00
1263 lines
78 KiB
JavaScript
1263 lines
78 KiB
JavaScript
/**
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* @description MeshCentral MeshAgent communication module
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* @author Ylian Saint-Hilaire & Bryan Roe
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* @copyright Intel Corporation 2018-2019
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* @license Apache-2.0
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* @version v0.0.1
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*/
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/*xjslint node: true */
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/*xjslint plusplus: true */
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/*xjslint maxlen: 256 */
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/*jshint node: true */
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/*jshint strict: false */
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/*jshint esversion: 6 */
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"use strict";
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// Construct a MeshAgent object, called upon connection
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module.exports.CreateMeshAgent = function (parent, db, ws, req, args, domain) {
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const forge = parent.parent.certificateOperations.forge;
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const common = parent.parent.common;
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const agentUpdateBlockSize = 65531;
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var obj = {};
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obj.domain = domain;
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obj.authenticated = 0;
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obj.receivedCommands = 0;
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obj.agentCoreCheck = 0;
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obj.remoteaddr = (req.ip.startsWith('::ffff:')) ? (req.ip.substring(7)) : req.ip;
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obj.remoteaddrport = obj.remoteaddr + ':' + ws._socket.remotePort;
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obj.nonce = parent.crypto.randomBytes(48).toString('binary');
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ws._socket.setKeepAlive(true, 240000); // Set TCP keep alive, 4 minutes
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//obj.nodeid = null;
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//obj.meshid = null;
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//obj.dbNodeKey = null;
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//obj.dbMeshKey = null;
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//obj.connectTime = null;
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//obj.agentInfo = null;
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// Send a message to the mesh agent
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obj.send = function (data, func) { try { if (typeof data == 'string') { ws.send(Buffer.from(data, 'binary'), func); } else { ws.send(data, func); } } catch (e) { } };
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// Disconnect this agent
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obj.close = function (arg) {
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obj.authenticated = -1;
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if ((arg == 1) || (arg == null)) { try { ws.close(); if (obj.nodeid != null) { parent.parent.debug(1, 'Soft disconnect ' + obj.nodeid + ' (' + obj.remoteaddrport + ')'); } } catch (e) { console.log(e); } } // Soft close, close the websocket
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if (arg == 2) { try { ws._socket._parent.end(); if (obj.nodeid != null) { parent.parent.debug(1, 'Hard disconnect ' + obj.nodeid + ' (' + obj.remoteaddrport + ')'); } } catch (e) { console.log(e); } } // Hard close, close the TCP socket
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// If arg == 3, don't communicate with this agent anymore, but don't disconnect (Duplicate agent).
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// If this is a recovery agent, don't bother with all this clean up.
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if ((obj.agentInfo.capabilities & 0x40) == 0) {
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// Remove this agent from the webserver list
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if (parent.wsagents[obj.dbNodeKey] == obj) {
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delete parent.wsagents[obj.dbNodeKey];
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parent.parent.ClearConnectivityState(obj.dbMeshKey, obj.dbNodeKey, 1);
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}
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// Get the current mesh
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const mesh = parent.meshes[obj.dbMeshKey];
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// If this is a temporary or recovery agent, or all devices in this group are temporary, remove the agent (0x20 = Temporary, 0x40 = Recovery)
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if (((obj.agentInfo) && (obj.agentInfo.capabilities) && (obj.agentInfo.capabilities & 0x20)) || ((mesh) && (mesh.flags) && (mesh.flags & 1))) {
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// Delete this node including network interface information and events
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db.Remove(obj.dbNodeKey); // Remove node with that id
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db.Remove('if' + obj.dbNodeKey); // Remove interface information
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db.Remove('nt' + obj.dbNodeKey); // Remove notes
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db.Remove('lc' + obj.dbNodeKey); // Remove last connect time
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db.RemoveSMBIOS(obj.dbNodeKey); // Remove SMBios data
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db.RemoveAllNodeEvents(obj.dbNodeKey); // Remove all events for this node
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db.removeAllPowerEventsForNode(obj.dbNodeKey); // Remove all power events for this node
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// Event node deletion
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parent.parent.DispatchEvent(['*', obj.dbMeshKey], obj, { etype: 'node', action: 'removenode', nodeid: obj.dbNodeKey, domain: domain.id, nolog: 1 });
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// Disconnect all connections if needed
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const state = parent.parent.GetConnectivityState(obj.dbNodeKey);
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if ((state != null) && (state.connectivity != null)) {
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if ((state.connectivity & 1) != 0) { parent.wsagents[obj.dbNodeKey].close(); } // Disconnect mesh agent
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if ((state.connectivity & 2) != 0) { parent.parent.mpsserver.close(parent.parent.mpsserver.ciraConnections[obj.dbNodeKey]); } // Disconnect CIRA connection
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}
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} else {
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// Update the last connect time
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if (obj.authenticated == 2) { db.Set({ _id: 'lc' + obj.dbNodeKey, type: 'lastconnect', domain: domain.id, time: obj.connectTime, addr: obj.remoteaddrport }); }
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}
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}
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// If we where updating the agent, clean that up.
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if (obj.agentUpdate != null) {
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if (obj.agentUpdate.fd) { try { parent.fs.close(obj.agentUpdate.fd); } catch (ex) { } }
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parent.parent.taskLimiter.completed(obj.agentUpdate.taskid); // Indicate this task complete
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delete obj.agentUpdate.buf;
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delete obj.agentUpdate;
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}
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// Perform aggressive cleanup
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if (obj.nonce) { delete obj.nonce; }
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if (obj.nodeid) { delete obj.nodeid; }
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if (obj.unauth) { delete obj.unauth; }
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if (obj.remoteaddr) { delete obj.remoteaddr; }
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if (obj.remoteaddrport) { delete obj.remoteaddrport; }
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if (obj.meshid) { delete obj.meshid; }
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if (obj.dbNodeKey) { delete obj.dbNodeKey; }
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if (obj.dbMeshKey) { delete obj.dbMeshKey; }
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if (obj.connectTime) { delete obj.connectTime; }
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if (obj.agentInfo) { delete obj.agentInfo; }
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if (obj.agentExeInfo) { delete obj.agentExeInfo; }
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ws.removeAllListeners(["message", "close", "error"]);
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};
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// When data is received from the mesh agent web socket
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ws.on('message', function (msg) {
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if (msg.length < 2) return;
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if (typeof msg == 'object') { msg = msg.toString('binary'); } // TODO: Could change this entire method to use Buffer instead of binary string
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if (obj.authenticated == 2) { // We are authenticated
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if ((obj.agentUpdate == null) && (msg.charCodeAt(0) == 123)) { processAgentData(msg); } // Only process JSON messages if meshagent update is not in progress
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if (msg.length < 2) return;
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const cmdid = common.ReadShort(msg, 0);
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if (cmdid == 11) { // MeshCommand_CoreModuleHash
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if (msg.length == 4) { ChangeAgentCoreInfo({ "caps": 0 }); } // If the agent indicated that no core is running, clear the core information string.
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// Mesh core hash, sent by agent with the hash of the current mesh core.
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// If we are using a custom core, don't try to update it.
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if (obj.agentCoreCheck == 1000) {
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obj.send(common.ShortToStr(16) + common.ShortToStr(0)); // MeshCommand_CoreOk. Indicates to the agent that the core is ok. Start it if it's not already started.
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agentCoreIsStable();
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return;
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}
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// Get the current meshcore hash
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const agentMeshCoreHash = (msg.length == 52) ? msg.substring(4, 52) : null;
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// If the agent indicates this is a custom core, we are done.
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if ((agentMeshCoreHash != null) && (agentMeshCoreHash == '\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0')) {
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obj.agentCoreCheck = 0;
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obj.send(common.ShortToStr(16) + common.ShortToStr(0)); // MeshCommand_CoreOk. Indicates to the agent that the core is ok. Start it if it's not already started.
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agentCoreIsStable();
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return;
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}
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// We need to check if the core is current. Figure out what core we need.
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var corename;
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if (obj.agentCoreCheck == 1001) {
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// If the user asked, use the recovery core.
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corename = parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId].rcore;
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} else if (obj.agentInfo.capabilities & 0x40) {
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// If this is a recovery agent, use the agent recovery core.
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corename = parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId].arcore;
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} else {
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// This is the normal core for this agent type.
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corename = parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId].core;
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}
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// If we have a core, use it.
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if (corename != null) {
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const meshcorehash = parent.parent.defaultMeshCoresHash[corename];
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if (agentMeshCoreHash != meshcorehash) {
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if ((obj.agentCoreCheck < 5) || (obj.agentCoreCheck == 1001)) {
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if (meshcorehash == null) {
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// Clear the core
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obj.send(common.ShortToStr(10) + common.ShortToStr(0)); // MeshCommand_CoreModule, ask mesh agent to clear the core
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parent.parent.debug(1, 'Clearing core');
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} else {
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// Update new core
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//obj.send(common.ShortToStr(10) + common.ShortToStr(0) + meshcorehash + parent.parent.defaultMeshCores[corename]); // MeshCommand_CoreModule, start core update
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//parent.parent.debug(1, 'Updating code ' + corename);
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// Update new core with task limiting so not to flood the server. This is a high priority task.
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obj.agentCoreUpdatePending = true;
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parent.parent.taskLimiter.launch(function (argument, taskid, taskLimiterQueue) {
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if (obj.authenticated == 2) {
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// Send the updated code.
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delete obj.agentCoreUpdatePending;
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obj.send(common.ShortToStr(10) + common.ShortToStr(0) + argument.hash + argument.core, function () { parent.parent.taskLimiter.completed(taskid); }); // MeshCommand_CoreModule, start core update
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parent.parent.debug(1, 'Updating code ' + argument.name);
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agentCoreIsStable();
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} else {
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// This agent is probably disconnected, nothing to do.
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parent.parent.taskLimiter.completed(taskid);
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}
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}, { hash: meshcorehash, core: parent.parent.defaultMeshCores[corename], name: corename }, 0);
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}
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obj.agentCoreCheck++;
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}
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} else {
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obj.agentCoreCheck = 0;
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obj.send(common.ShortToStr(16) + common.ShortToStr(0)); // MeshCommand_CoreOk. Indicates to the agent that the core is ok. Start it if it's not already started.
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agentCoreIsStable(); // No updates needed, agent is ready to go.
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}
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}
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/*
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// TODO: Check if we have a mesh specific core. If so, use that.
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var agentMeshCoreHash = null;
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if (msg.length == 52) { agentMeshCoreHash = msg.substring(4, 52); }
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if ((agentMeshCoreHash != parent.parent.defaultMeshCoreHash) && (agentMeshCoreHash != parent.parent.defaultMeshCoreNoMeiHash)) {
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if (obj.agentCoreCheck < 5) { // This check is in place to avoid a looping core update.
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if (parent.parent.defaultMeshCoreHash == null) {
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// Update no core
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obj.send(common.ShortToStr(10) + common.ShortToStr(0)); // Command 10, ask mesh agent to clear the core
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} else {
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// Update new core
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if (parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId].amt == true) {
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obj.send(common.ShortToStr(10) + common.ShortToStr(0) + parent.parent.defaultMeshCoreHash + parent.parent.defaultMeshCore); // Command 10, ask mesh agent to set the core (with MEI support)
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} else {
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obj.send(common.ShortToStr(10) + common.ShortToStr(0) + parent.parent.defaultMeshCoreNoMeiHash + parent.parent.defaultMeshCoreNoMei); // Command 10, ask mesh agent to set the core (No MEI)
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}
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}
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obj.agentCoreCheck++;
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}
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} else {
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obj.agentCoreCheck = 0;
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}
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*/
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}
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else if (cmdid == 12) { // MeshCommand_AgentHash
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if ((msg.length == 52) && (obj.agentExeInfo != null) && (obj.agentExeInfo.update == true)) {
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const agenthash = msg.substring(4);
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if ((agenthash != obj.agentExeInfo.hash) && (agenthash != '\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0')) {
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// Mesh agent update required, do it using task limiter so not to flood the network. Medium priority task.
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parent.parent.taskLimiter.launch(function (argument, taskid, taskLimiterQueue) {
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if (obj.authenticated != 2) { parent.parent.taskLimiter.completed(taskid); return; } // If agent disconnection, complete and exit now.
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if (obj.nodeid != null) { parent.parent.debug(1, 'Agent update required, NodeID=0x' + obj.nodeid.substring(0, 16) + ', ' + obj.agentExeInfo.desc); }
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if (obj.agentExeInfo.data == null) {
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// Read the agent from disk
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parent.fs.open(obj.agentExeInfo.path, 'r', function (err, fd) {
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if (obj.agentExeInfo == null) return; // Agent disconnected during this call.
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if (err) { return console.error(err); }
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obj.agentUpdate = { ptr: 0, buf: Buffer.alloc(agentUpdateBlockSize + 4), fd: fd, taskid: taskid };
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// MeshCommand_CoreModule, ask mesh agent to clear the core.
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// The new core will only be sent after the agent updates.
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obj.send(common.ShortToStr(10) + common.ShortToStr(0));
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// We got the agent file open on the server side, tell the agent we are sending an update starting with the SHA384 hash of the result
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//console.log("Agent update file open.");
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obj.send(common.ShortToStr(13) + common.ShortToStr(0)); // Command 13, start mesh agent download
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// Send the first mesh agent update data block
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obj.agentUpdate.buf[0] = 0;
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obj.agentUpdate.buf[1] = 14;
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obj.agentUpdate.buf[2] = 0;
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obj.agentUpdate.buf[3] = 1;
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parent.fs.read(obj.agentUpdate.fd, obj.agentUpdate.buf, 4, agentUpdateBlockSize, obj.agentUpdate.ptr, function (err, bytesRead, buffer) {
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if ((err != null) || (bytesRead == 0)) {
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// Error reading the agent file, stop here.
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try { parent.fs.close(obj.agentUpdate.fd); } catch (ex) { }
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parent.parent.taskLimiter.completed(obj.agentUpdate.taskid); // Indicate this task complete
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delete obj.agentUpdate.buf;
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delete obj.agentUpdate;
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} else {
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// Send the first block to the agent
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obj.agentUpdate.ptr += bytesRead;
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//console.log("Agent update send first block: " + bytesRead);
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obj.send(obj.agentUpdate.buf); // Command 14, mesh agent first data block
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}
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});
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});
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} else {
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// Send the agent from RAM
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obj.agentUpdate = { ptr: 0, buf: Buffer.alloc(agentUpdateBlockSize + 4), taskid: taskid };
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// MeshCommand_CoreModule, ask mesh agent to clear the core.
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// The new core will only be sent after the agent updates.
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obj.send(common.ShortToStr(10) + common.ShortToStr(0));
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// We got the agent file open on the server side, tell the agent we are sending an update starting with the SHA384 hash of the result
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obj.send(common.ShortToStr(13) + common.ShortToStr(0)); // Command 13, start mesh agent download
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// Send the first mesh agent update data block
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obj.agentUpdate.buf[0] = 0;
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obj.agentUpdate.buf[1] = 14;
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obj.agentUpdate.buf[2] = 0;
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obj.agentUpdate.buf[3] = 1;
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const len = Math.min(agentUpdateBlockSize, obj.agentExeInfo.data.length - obj.agentUpdate.ptr);
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if (len > 0) {
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// Send the first block
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obj.agentExeInfo.data.copy(obj.agentUpdate.buf, 4, obj.agentUpdate.ptr, obj.agentUpdate.ptr + len);
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obj.agentUpdate.ptr += len;
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obj.send(obj.agentUpdate.buf); // Command 14, mesh agent first data block
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} else {
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// Error
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parent.parent.taskLimiter.completed(obj.agentUpdate.taskid); // Indicate this task complete
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delete obj.agentUpdate.buf;
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delete obj.agentUpdate;
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}
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}
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}, null, 1);
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} else {
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// Check the mesh core, if the agent is capable of running one
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if (((obj.agentInfo.capabilities & 16) != 0) && (parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId].core != null)) {
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obj.send(common.ShortToStr(11) + common.ShortToStr(0)); // Command 11, ask for mesh core hash.
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}
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}
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}
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}
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else if (cmdid == 14) { // MeshCommand_AgentBinaryBlock
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if ((msg.length == 4) && (obj.agentUpdate != null)) {
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const status = common.ReadShort(msg, 2);
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if (status == 1) {
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if (obj.agentExeInfo.data == null) {
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// Read the agent from disk
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parent.fs.read(obj.agentUpdate.fd, obj.agentUpdate.buf, 4, agentUpdateBlockSize, obj.agentUpdate.ptr, function (err, bytesRead, buffer) {
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if ((obj.agentExeInfo == null) || (obj.agentUpdate == null)) return; // Agent disconnected during this async call.
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if ((err != null) || (bytesRead < 0)) {
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// Error reading the agent file, stop here.
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try { parent.fs.close(obj.agentUpdate.fd); } catch (ex) { }
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parent.parent.taskLimiter.completed(obj.agentUpdate.taskid); // Indicate this task complete
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delete obj.agentUpdate.buf;
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delete obj.agentUpdate;
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} else {
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// Send the next block to the agent
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obj.agentUpdate.ptr += bytesRead;
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//console.log("Agent update send next block", obj.agentUpdate.ptr, bytesRead);
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if (bytesRead == agentUpdateBlockSize) { obj.send(obj.agentUpdate.buf); } else { obj.send(obj.agentUpdate.buf.slice(0, bytesRead + 4)); } // Command 14, mesh agent next data block
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if (bytesRead < agentUpdateBlockSize) {
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//console.log("Agent update sent from disk.");
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obj.send(common.ShortToStr(13) + common.ShortToStr(0) + obj.agentExeInfo.hash); // Command 13, end mesh agent download, send agent SHA384 hash
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try { parent.fs.close(obj.agentUpdate.fd); } catch (ex) { }
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parent.parent.taskLimiter.completed(obj.agentUpdate.taskid); // Indicate this task complete
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delete obj.agentUpdate.buf;
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delete obj.agentUpdate;
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}
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}
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});
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} else {
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// Send the agent from RAM
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const len = Math.min(agentUpdateBlockSize, obj.agentExeInfo.data.length - obj.agentUpdate.ptr);
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if (len > 0) {
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obj.agentExeInfo.data.copy(obj.agentUpdate.buf, 4, obj.agentUpdate.ptr, obj.agentUpdate.ptr + len);
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if (len == agentUpdateBlockSize) { obj.send(obj.agentUpdate.buf); } else { obj.send(obj.agentUpdate.buf.slice(0, len + 4)); } // Command 14, mesh agent next data block
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obj.agentUpdate.ptr += len;
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}
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if (obj.agentUpdate.ptr == obj.agentExeInfo.data.length) {
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//console.log("Agent update sent from RAM.");
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obj.send(common.ShortToStr(13) + common.ShortToStr(0) + obj.agentExeInfo.hash); // Command 13, end mesh agent download, send agent SHA384 hash
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parent.parent.taskLimiter.completed(obj.agentUpdate.taskid); // Indicate this task complete
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delete obj.agentUpdate.buf;
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delete obj.agentUpdate;
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}
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}
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}
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}
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}
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else if (cmdid == 15) { // MeshCommand_AgentTag
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var tag = msg.substring(2);
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while (tag.charCodeAt(tag.length - 1) == 0) { tag = tag.substring(0, tag.length - 1); } // Remove end-of-line zeros.
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ChangeAgentTag(tag);
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}
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} else if (obj.authenticated < 2) { // We are not authenticated
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const cmd = common.ReadShort(msg, 0);
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if (cmd == 1) {
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// Agent authentication request
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if ((msg.length != 98) || ((obj.receivedCommands & 1) != 0)) return;
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obj.receivedCommands += 1; // Agent can't send the same command twice on the same connection ever. Block DOS attack path.
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if (args.ignoreagenthashcheck === true) {
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// Send the agent web hash back to the agent
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obj.send(common.ShortToStr(1) + msg.substring(2, 50) + obj.nonce); // Command 1, hash + nonce. Use the web hash given by the agent.
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} else {
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|
// Check that the server hash matches our own web certificate hash (SHA384)
|
|
if ((getWebCertHash(domain) != msg.substring(2, 50)) && (getWebCertFullHash(domain) != msg.substring(2, 50))) {
|
|
console.log('Agent bad web cert hash (Agent:' + (Buffer.from(msg.substring(2, 50), 'binary').toString('hex').substring(0, 10)) + ' != Server:' + (Buffer.from(getWebCertHash(domain), 'binary').toString('hex').substring(0, 10)) + ' or ' + (new Buffer(getWebCertFullHash(domain), 'binary').toString('hex').substring(0, 10)) + '), holding connection (' + obj.remoteaddrport + ').');
|
|
console.log('Agent reported web cert hash:' + (Buffer.from(msg.substring(2, 50), 'binary').toString('hex')) + '.');
|
|
return;
|
|
}
|
|
}
|
|
|
|
// Use our server private key to sign the ServerHash + AgentNonce + ServerNonce
|
|
obj.agentnonce = msg.substring(50, 98);
|
|
|
|
// Check if we got the agent auth confirmation
|
|
if ((obj.receivedCommands & 8) == 0) {
|
|
// If we did not get an indication that the agent already validated this server, send the server signature.
|
|
if (obj.useSwarmCert == true) {
|
|
// Perform the hash signature using older swarm server certificate
|
|
parent.parent.certificateOperations.acceleratorPerformSignature(1, msg.substring(2) + obj.nonce, obj, function (obj2, signature) {
|
|
// Send back our certificate + signature
|
|
obj2.send(common.ShortToStr(2) + common.ShortToStr(parent.swarmCertificateAsn1.length) + parent.swarmCertificateAsn1 + signature); // Command 2, certificate + signature
|
|
});
|
|
} else {
|
|
// Perform the hash signature using the server agent certificate
|
|
parent.parent.certificateOperations.acceleratorPerformSignature(0, msg.substring(2) + obj.nonce, obj, function (obj2, signature) {
|
|
// Send back our certificate + signature
|
|
obj2.send(common.ShortToStr(2) + common.ShortToStr(parent.agentCertificateAsn1.length) + parent.agentCertificateAsn1 + signature); // Command 2, certificate + signature
|
|
});
|
|
}
|
|
}
|
|
|
|
// Check the agent signature if we can
|
|
if (obj.unauthsign != null) {
|
|
if (processAgentSignature(obj.unauthsign) == false) { console.log('Agent connected with bad signature, holding connection (' + obj.remoteaddrport + ').'); return; } else { completeAgentConnection(); }
|
|
}
|
|
}
|
|
else if (cmd == 2) {
|
|
// Agent certificate
|
|
if ((msg.length < 4) || ((obj.receivedCommands & 2) != 0)) return;
|
|
obj.receivedCommands += 2; // Agent can't send the same command twice on the same connection ever. Block DOS attack path.
|
|
|
|
// Decode the certificate
|
|
const certlen = common.ReadShort(msg, 2);
|
|
obj.unauth = {};
|
|
try { obj.unauth.nodeid = Buffer.from(forge.pki.getPublicKeyFingerprint(forge.pki.certificateFromAsn1(forge.asn1.fromDer(msg.substring(4, 4 + certlen))).publicKey, { md: forge.md.sha384.create() }).data, 'binary').toString('base64').replace(/\+/g, '@').replace(/\//g, '$'); } catch (ex) { console.log(ex); return; }
|
|
obj.unauth.nodeCertPem = '-----BEGIN CERTIFICATE-----\r\n' + Buffer.from(msg.substring(4, 4 + certlen), 'binary').toString('base64') + '\r\n-----END CERTIFICATE-----';
|
|
|
|
// Check the agent signature if we can
|
|
if (obj.agentnonce == null) { obj.unauthsign = msg.substring(4 + certlen); } else { if (processAgentSignature(msg.substring(4 + certlen)) == false) { console.log('Agent connected with bad signature, holding connection (' + obj.remoteaddrport + ').'); return; } }
|
|
completeAgentConnection();
|
|
}
|
|
else if (cmd == 3) {
|
|
// Agent meshid
|
|
if ((msg.length < 72) || ((obj.receivedCommands & 4) != 0)) return;
|
|
obj.receivedCommands += 4; // Agent can't send the same command twice on the same connection ever. Block DOS attack path.
|
|
|
|
// Set the meshid
|
|
obj.agentInfo = {};
|
|
obj.agentInfo.infoVersion = common.ReadInt(msg, 2);
|
|
obj.agentInfo.agentId = common.ReadInt(msg, 6);
|
|
obj.agentInfo.agentVersion = common.ReadInt(msg, 10);
|
|
obj.agentInfo.platformType = common.ReadInt(msg, 14);
|
|
if (obj.agentInfo.platformType > 6 || obj.agentInfo.platformType < 1) { obj.agentInfo.platformType = 1; }
|
|
if (msg.substring(50, 66) == '\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0') {
|
|
obj.meshid = Buffer.from(msg.substring(18, 50), 'binary').toString('hex'); // Older HEX MeshID
|
|
} else {
|
|
obj.meshid = Buffer.from(msg.substring(18, 66), 'binary').toString('base64').replace(/\+/g, '@').replace(/\//g, '$'); // New Base64 MeshID
|
|
}
|
|
//console.log('MeshID', obj.meshid);
|
|
obj.agentInfo.capabilities = common.ReadInt(msg, 66);
|
|
const computerNameLen = common.ReadShort(msg, 70);
|
|
obj.agentInfo.computerName = msg.substring(72, 72 + computerNameLen);
|
|
obj.dbMeshKey = 'mesh/' + domain.id + '/' + obj.meshid;
|
|
completeAgentConnection();
|
|
} else if (cmd == 4) {
|
|
if ((msg.length < 2) || ((obj.receivedCommands & 8) != 0)) return;
|
|
obj.receivedCommands += 8; // Agent can't send the same command twice on the same connection ever. Block DOS attack path.
|
|
// Agent already authenticated the server, wants to skip the server signature - which is great for server performance.
|
|
} else if (cmd == 5) {
|
|
// ServerID. Agent is telling us what serverid it expects. Useful if we have many server certificates.
|
|
if ((msg.substring(2, 34) == parent.swarmCertificateHash256) || (msg.substring(2, 50) == parent.swarmCertificateHash384)) { obj.useSwarmCert = true; }
|
|
}
|
|
}
|
|
});
|
|
|
|
// If error, do nothing
|
|
ws.on('error', function (err) { console.log('AGENT WSERR: ' + err); obj.close(0); });
|
|
|
|
// If the mesh agent web socket is closed, clean up.
|
|
ws.on('close', function (req) {
|
|
if (obj.nodeid != null) {
|
|
const agentId = (obj.agentInfo && obj.agentInfo.agentId) ? obj.agentInfo.agentId : 'Unknown';
|
|
//console.log('Agent disconnect ' + obj.nodeid + ' (' + obj.remoteaddrport + ') id=' + agentId);
|
|
parent.parent.debug(1, 'Agent disconnect ' + obj.nodeid + ' (' + obj.remoteaddrport + ') id=' + agentId);
|
|
|
|
// Log the agent disconnection
|
|
if (parent.wsagentsDisconnections[obj.nodeid] == null) {
|
|
parent.wsagentsDisconnections[obj.nodeid] = 1;
|
|
} else {
|
|
parent.wsagentsDisconnections[obj.nodeid] = ++parent.wsagentsDisconnections[obj.nodeid];
|
|
}
|
|
}
|
|
obj.close(0);
|
|
});
|
|
// ws._socket._parent.on('close', function (req) { if (obj.nodeid != null) { parent.parent.debug(1, 'Agent TCP disconnect ' + obj.nodeid + ' (' + obj.remoteaddrport + ')'); } });
|
|
|
|
// Start authenticate the mesh agent by sending a auth nonce & server TLS cert hash.
|
|
// Send 384 bits SHA384 hash of TLS cert public key + 384 bits nonce
|
|
if (args.ignoreagenthashcheck !== true) {
|
|
obj.send(common.ShortToStr(1) + getWebCertHash(domain) + obj.nonce); // Command 1, hash + nonce
|
|
}
|
|
|
|
// Return the mesh for this device, in some cases, we may auto-create the mesh.
|
|
function getMeshAutoCreate() {
|
|
var mesh = parent.meshes[obj.dbMeshKey];
|
|
if ((mesh == null) && (typeof domain.orphanagentuser == 'string')) {
|
|
const adminUser = parent.users['user/' + domain.id + '/' + domain.orphanagentuser.toLowerCase()];
|
|
if ((adminUser != null) && (adminUser.siteadmin == 0xFFFFFFFF)) {
|
|
// Mesh name is hex instead of base64
|
|
const meshname = obj.meshid.substring(0, 18);
|
|
|
|
// Create a new mesh for this device
|
|
const links = {};
|
|
links[adminUser._id] = { name: adminUser.name, rights: 0xFFFFFFFF };
|
|
mesh = { type: 'mesh', _id: obj.dbMeshKey, name: meshname, mtype: 2, desc: '', domain: domain.id, links: links };
|
|
db.Set(common.escapeLinksFieldName(mesh));
|
|
parent.meshes[obj.dbMeshKey] = mesh;
|
|
|
|
if (adminUser.links == null) adminUser.links = {};
|
|
adminUser.links[obj.dbMeshKey] = { rights: 0xFFFFFFFF };
|
|
db.SetUser(adminUser);
|
|
parent.parent.DispatchEvent(['*', obj.dbMeshKey, adminUser._id], obj, { etype: 'mesh', username: adminUser.name, meshid: obj.dbMeshKey, name: meshname, mtype: 2, desc: '', action: 'createmesh', links: links, msg: 'Mesh created: ' + obj.meshid, domain: domain.id });
|
|
}
|
|
} else {
|
|
if ((mesh != null) && (mesh.deleted != null) && (mesh.links)) {
|
|
// Must un-delete this mesh
|
|
var ids = ['*', mesh._id];
|
|
|
|
// See if users still exists, if so, add links to the mesh
|
|
for (var userid in mesh.links) {
|
|
const user = parent.users[userid];
|
|
if (user) {
|
|
if (user.links == null) { user.links = {}; }
|
|
if (user.links[mesh._id] == null) {
|
|
user.links[mesh._id] = { rights: mesh.links[userid].rights };
|
|
ids.push(user._id);
|
|
db.SetUser(user);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Send out an event indicating this mesh was "created"
|
|
parent.parent.DispatchEvent(ids, obj, { etype: 'mesh', meshid: mesh._id, name: mesh.name, mtype: mesh.mtype, desc: mesh.desc, action: 'createmesh', links: mesh.links, msg: 'Mesh undeleted: ' + mesh._id, domain: domain.id });
|
|
|
|
// Mark the mesh as active
|
|
delete mesh.deleted;
|
|
db.Set(common.escapeLinksFieldName(mesh));
|
|
}
|
|
}
|
|
return mesh;
|
|
}
|
|
|
|
// Once we get all the information about an agent, run this to hook everything up to the server
|
|
function completeAgentConnection() {
|
|
if ((obj.authenticated != 1) || (obj.meshid == null) || obj.pendingCompleteAgentConnection || (obj.agentInfo == null)) { return; }
|
|
obj.pendingCompleteAgentConnection = true;
|
|
|
|
if (obj.agentInfo.capabilities & 0x40) {
|
|
// This is a recovery agent
|
|
obj.send(common.ShortToStr(11) + common.ShortToStr(0)); // Command 11, ask for mesh core hash.
|
|
return;
|
|
}
|
|
|
|
// Check if we have too many agent sessions
|
|
if (typeof domain.limits.maxagentsessions == 'number') {
|
|
// Count the number of agent sessions for this domain
|
|
var domainAgentSessionCount = 0;
|
|
for (var i in parent.wsagents) { if (parent.wsagents[i].domain.id == domain.id) { domainAgentSessionCount++; } }
|
|
|
|
// Check if we have too many user sessions
|
|
if (domainAgentSessionCount >= domain.limits.maxagentsessions) { return; } // Too many, hold the connection.
|
|
}
|
|
|
|
/*
|
|
// Check that the mesh exists
|
|
var mesh = parent.meshes[obj.dbMeshKey];
|
|
if (mesh == null) {
|
|
var holdConnection = true;
|
|
if (typeof domain.orphanagentuser == 'string') {
|
|
var adminUser = parent.users['user/' + domain.id + '/' + args.orphanagentuser];
|
|
if ((adminUser != null) && (adminUser.siteadmin == 0xFFFFFFFF)) {
|
|
// Create a new mesh for this device
|
|
holdConnection = false;
|
|
var links = {};
|
|
links[user._id] = { name: adminUser.name, rights: 0xFFFFFFFF };
|
|
mesh = { type: 'mesh', _id: obj.dbMeshKey, name: obj.meshid, mtype: 2, desc: '', domain: domain.id, links: links };
|
|
db.Set(common.escapeLinksFieldName(mesh));
|
|
parent.meshes[obj.meshid] = mesh;
|
|
parent.parent.AddEventDispatch([obj.meshid], ws);
|
|
|
|
if (adminUser.links == null) user.links = {};
|
|
adminUser.links[obj.meshid] = { rights: 0xFFFFFFFF };
|
|
//adminUser.subscriptions = parent.subscribe(adminUser._id, ws);
|
|
db.SetUser(user);
|
|
parent.parent.DispatchEvent(['*', meshid, user._id], obj, { etype: 'mesh', username: user.name, meshid: obj.meshid, name: obj.meshid, mtype: 2, desc: '', action: 'createmesh', links: links, msg: 'Mesh created: ' + obj.meshid, domain: domain.id });
|
|
}
|
|
}
|
|
|
|
if (holdConnection == true) {
|
|
// If we disconnect, the agent will just reconnect. We need to log this or tell agent to connect in a few hours.
|
|
console.log('Agent connected with invalid domain/mesh, holding connection (' + obj.remoteaddrport + ', ' + obj.dbMeshKey + ').');
|
|
return;
|
|
}
|
|
}
|
|
if (mesh.mtype != 2) { console.log('Agent connected with invalid mesh type, holding connection (' + obj.remoteaddrport + ').'); return; } // If we disconnect, the agnet will just reconnect. We need to log this or tell agent to connect in a few hours.
|
|
*/
|
|
|
|
// Check that the node exists
|
|
db.Get(obj.dbNodeKey, function (err, nodes) {
|
|
if (obj.agentInfo == null) { return; }
|
|
var device;
|
|
|
|
// See if this node exists in the database
|
|
if (nodes.length == 0) {
|
|
// This device does not exist, use the meshid given by the device
|
|
|
|
// See if this mesh exists, if it does not we may want to create it.
|
|
const mesh = getMeshAutoCreate();
|
|
|
|
// Check if the mesh exists
|
|
if (mesh == null) {
|
|
// If we disconnect, the agent will just reconnect. We need to log this or tell agent to connect in a few hours.
|
|
console.log('Agent connected with invalid domain/mesh, holding connection (' + obj.remoteaddrport + ', ' + obj.dbMeshKey + ').');
|
|
return;
|
|
}
|
|
|
|
// Check if the mesh is the right type
|
|
if (mesh.mtype != 2) {
|
|
// If we disconnect, the agent will just reconnect. We need to log this or tell agent to connect in a few hours.
|
|
console.log('Agent connected with invalid mesh type, holding connection (' + obj.remoteaddrport + ').');
|
|
return;
|
|
}
|
|
|
|
// Mark when this device connected
|
|
obj.connectTime = Date.now();
|
|
db.Set({ _id: 'lc' + obj.dbNodeKey, type: 'lastconnect', domain: domain.id, time: obj.connectTime, addr: obj.remoteaddrport });
|
|
|
|
// This node does not exist, create it.
|
|
device = { type: 'node', mtype: mesh.mtype, _id: obj.dbNodeKey, icon: obj.agentInfo.platformType, meshid: obj.dbMeshKey, name: obj.agentInfo.computerName, rname: obj.agentInfo.computerName, domain: domain.id, agent: { ver: obj.agentInfo.agentVersion, id: obj.agentInfo.agentId, caps: obj.agentInfo.capabilities }, host: null };
|
|
db.Set(device);
|
|
|
|
// Event the new node
|
|
if (obj.agentInfo.capabilities & 0x20) {
|
|
// This is a temporary agent, don't log.
|
|
parent.parent.DispatchEvent(['*', obj.dbMeshKey], obj, { etype: 'node', action: 'addnode', node: device, domain: domain.id, nolog: 1 });
|
|
} else {
|
|
parent.parent.DispatchEvent(['*', obj.dbMeshKey], obj, { etype: 'node', action: 'addnode', node: device, msg: ('Added device ' + obj.agentInfo.computerName + ' to mesh ' + mesh.name), domain: domain.id });
|
|
}
|
|
} else {
|
|
device = nodes[0];
|
|
|
|
// This device exists, meshid given by the device must be ignored, use the server side one.
|
|
if (device.meshid != obj.dbMeshKey) {
|
|
obj.dbMeshKey = device.meshid;
|
|
obj.meshid = device.meshid.split('/')[2];
|
|
}
|
|
|
|
// See if this mesh exists, if it does not we may want to create it.
|
|
const mesh = getMeshAutoCreate();
|
|
|
|
// Check if the mesh exists
|
|
if (mesh == null) {
|
|
// If we disconnect, the agent will just reconnect. We need to log this or tell agent to connect in a few hours.
|
|
console.log('Agent connected with invalid domain/mesh, holding connection (' + obj.remoteaddrport + ', ' + obj.dbMeshKey + ').');
|
|
return;
|
|
}
|
|
|
|
// Check if the mesh is the right type
|
|
if (mesh.mtype != 2) {
|
|
// If we disconnect, the agent will just reconnect. We need to log this or tell agent to connect in a few hours.
|
|
console.log('Agent connected with invalid mesh type, holding connection (' + obj.remoteaddrport + ').');
|
|
return;
|
|
}
|
|
|
|
// Mark when this device connected
|
|
obj.connectTime = Date.now();
|
|
db.Set({ _id: 'lc' + obj.dbNodeKey, type: 'lastconnect', domain: domain.id, time: obj.connectTime, addr: obj.remoteaddrport });
|
|
|
|
// Device already exists, look if changes have occured
|
|
var changes = [], change = 0, log = 0;
|
|
if (device.agent == null) { device.agent = { ver: obj.agentInfo.agentVersion, id: obj.agentInfo.agentId, caps: obj.agentInfo.capabilities }; change = 1; }
|
|
if (device.rname != obj.agentInfo.computerName) { device.rname = obj.agentInfo.computerName; change = 1; changes.push('computer name'); }
|
|
if (device.agent.ver != obj.agentInfo.agentVersion) { device.agent.ver = obj.agentInfo.agentVersion; change = 1; changes.push('agent version'); }
|
|
if (device.agent.id != obj.agentInfo.agentId) { device.agent.id = obj.agentInfo.agentId; change = 1; changes.push('agent type'); }
|
|
if ((device.agent.caps & 24) != (obj.agentInfo.capabilities & 24)) { device.agent.caps = obj.agentInfo.capabilities; change = 1; changes.push('agent capabilities'); } // If agent console or javascript support changes, update capabilities
|
|
if (mesh.flags && (mesh.flags & 2) && (device.name != obj.agentInfo.computerName)) { device.name = obj.agentInfo.computerName; change = 1; } // We want the server name to be sync'ed to the hostname
|
|
|
|
if (change == 1) {
|
|
db.Set(device);
|
|
|
|
// If this is a temporary device, don't log changes
|
|
if (obj.agentInfo.capabilities & 0x20) { log = 0; }
|
|
|
|
// Event the node change
|
|
var event = { etype: 'node', action: 'changenode', nodeid: obj.dbNodeKey, domain: domain.id };
|
|
if (log == 0) { event.nolog = 1; } else { event.msg = 'Changed device ' + device.name + ' from group ' + mesh.name + ': ' + changes.join(', '); }
|
|
const device2 = common.Clone(device);
|
|
if (device2.intelamt && device2.intelamt.pass) delete device2.intelamt.pass; // Remove the Intel AMT password before eventing this.
|
|
event.node = device;
|
|
parent.parent.DispatchEvent(['*', device.meshid], obj, event);
|
|
}
|
|
}
|
|
|
|
// Check if this agent is already connected
|
|
const dupAgent = parent.wsagents[obj.dbNodeKey];
|
|
parent.wsagents[obj.dbNodeKey] = obj;
|
|
if (dupAgent) {
|
|
// Close the duplicate agent
|
|
if (obj.nodeid != null) { parent.parent.debug(1, 'Duplicate agent ' + obj.nodeid + ' (' + obj.remoteaddrport + ')'); }
|
|
dupAgent.close(3);
|
|
} else {
|
|
// Indicate the agent is connected
|
|
parent.parent.SetConnectivityState(obj.dbMeshKey, obj.dbNodeKey, obj.connectTime, 1, 1);
|
|
}
|
|
|
|
// We are done, ready to communicate with this agent
|
|
delete obj.pendingCompleteAgentConnection;
|
|
obj.authenticated = 2;
|
|
|
|
// Check how many times this agent disconnected in the last few minutes.
|
|
const disconnectCount = parent.wsagentsDisconnections[obj.nodeid];
|
|
if (disconnectCount > 6) {
|
|
console.log('Agent in big trouble: NodeId=' + obj.nodeid + ', IP=' + obj.remoteaddrport + ', Agent=' + obj.agentInfo.agentId + '.');
|
|
// TODO: Log or do something to recover?
|
|
return;
|
|
}
|
|
|
|
// Command 4, inform mesh agent that it's authenticated.
|
|
obj.send(common.ShortToStr(4));
|
|
|
|
if (disconnectCount > 4) {
|
|
// Too many disconnections, this agent has issues. Just clear the core.
|
|
obj.send(common.ShortToStr(10) + common.ShortToStr(0));
|
|
//console.log('Agent in trouble: NodeId=' + obj.nodeid + ', IP=' + obj.remoteaddrport + ', Agent=' + obj.agentInfo.agentId + '.');
|
|
// TODO: Log or do something to recover?
|
|
return;
|
|
}
|
|
|
|
// Not sure why, but in rare cases, obj.agentInfo is undefined here.
|
|
if ((obj.agentInfo == null) || (typeof obj.agentInfo.capabilities != 'number')) { return; } // This is an odd case.
|
|
|
|
// Check if we need to make an native update check
|
|
obj.agentExeInfo = parent.parent.meshAgentBinaries[obj.agentInfo.agentId];
|
|
const corename = parent.parent.meshAgentsArchitectureNumbers[obj.agentInfo.agentId].core;
|
|
if (corename == null) { obj.send(common.ShortToStr(10) + common.ShortToStr(0)); } // MeshCommand_CoreModule, ask mesh agent to clear the core
|
|
|
|
if ((obj.agentExeInfo != null) && (obj.agentExeInfo.update == true)) {
|
|
// Ask the agent for it's executable binary hash
|
|
obj.send(common.ShortToStr(12) + common.ShortToStr(0));
|
|
} else {
|
|
// Check the mesh core, if the agent is capable of running one
|
|
if (((obj.agentInfo.capabilities & 16) != 0) && (corename != null)) {
|
|
obj.send(common.ShortToStr(11) + common.ShortToStr(0)); // Command 11, ask for mesh core hash.
|
|
} else {
|
|
agentCoreIsStable(); // No updates needed, agent is ready to go.
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
// Take a basic Intel AMT policy and add all server information to it, making it ready to send to this agent.
|
|
function completeIntelAmtPolicy(amtPolicy) {
|
|
if (amtPolicy == null) return null;
|
|
if (amtPolicy.type == 2) {
|
|
// Add server root certificate
|
|
if (parent.parent.certificates.rootex == null) { parent.parent.certificates.rootex = parent.parent.certificates.root.cert.split('-----BEGIN CERTIFICATE-----').join('').split('-----END CERTIFICATE-----').join('').split('\r').join('').split('\n').join(''); }
|
|
amtPolicy.rootcert = parent.parent.certificates.rootex;
|
|
}
|
|
if ((amtPolicy.cirasetup == 2) && (parent.parent.mpsserver != null) && (parent.parent.certificates.AmtMpsName != null) && (args.lanonly != true) && (args.mpsport != 0)) {
|
|
// Add server CIRA settings
|
|
amtPolicy.ciraserver = {
|
|
name: parent.parent.certificates.AmtMpsName,
|
|
port: (typeof args.mpsaliasport == 'number' ? args.mpsaliasport : args.mpsport),
|
|
user: obj.meshid.replace(/\@/g, 'X').replace(/\$/g, 'X').substring(0, 16),
|
|
pass: args.mpspass ? args.mpspass : 'A@xew9rt', // If the MPS password is not set, just use anything. TODO: Use the password as an agent identifier?
|
|
home: ['sdlwerulis3wpj95dfj'] // Use a random FQDN to not have any home network.
|
|
};
|
|
if (Array.isArray(args.ciralocalfqdn)) { amtPolicy.ciraserver.home = args.ciralocalfqdn; }
|
|
}
|
|
return amtPolicy;
|
|
}
|
|
|
|
// Send Intel AMT policy
|
|
obj.sendUpdatedIntelAmtPolicy = function (policy) {
|
|
if (obj.agentExeInfo && (obj.agentExeInfo.amt == true)) { // Only send Intel AMT policy to agents what could have AMT.
|
|
if (policy == null) { var mesh = parent.meshes[obj.dbMeshKey]; if (mesh == null) return; policy = mesh.amt; }
|
|
if (policy != null) { try { obj.send(JSON.stringify({ action: 'amtPolicy', amtPolicy: completeIntelAmtPolicy(common.Clone(policy)) })); } catch (ex) { } }
|
|
}
|
|
}
|
|
|
|
function recoveryAgentCoreIsStable(mesh) {
|
|
// Recovery agent is doing ok, lets perform main agent checking.
|
|
//console.log('recoveryAgentCoreIsStable()');
|
|
|
|
// Fetch the the real agent nodeid
|
|
db.Get('da' + obj.dbNodeKey, function (err, nodes) {
|
|
if (nodes.length == 1) {
|
|
obj.realNodeKey = nodes[0].raid;
|
|
obj.send(JSON.stringify({ action: 'diagnostic', value: { command: 'query', value: obj.realNodeKey } }));
|
|
} else {
|
|
obj.send(JSON.stringify({ action: 'diagnostic', value: { command: 'query', value: null } }));
|
|
}
|
|
});
|
|
}
|
|
|
|
function agentCoreIsStable() {
|
|
// Check that the mesh exists
|
|
const mesh = parent.meshes[obj.dbMeshKey];
|
|
if (mesh == null) {
|
|
// TODO: Mark this agent as part of a mesh that does not exists.
|
|
return; // Probably not worth doing anything else. Hold this agent.
|
|
}
|
|
|
|
// Fetch the the real agent nodeid
|
|
db.Get('ra' + obj.dbNodeKey, function (err, nodes) {
|
|
if (nodes.length == 1) {
|
|
obj.diagnosticNodeKey = nodes[0].daid;
|
|
obj.send(JSON.stringify({ action: 'diagnostic', value: { command: 'query', value: obj.diagnosticNodeKey } }));
|
|
}
|
|
});
|
|
|
|
// Check if this is a recovery agent
|
|
if (obj.agentInfo.capabilities & 0x40) { recoveryAgentCoreIsStable(mesh); return; }
|
|
|
|
// Send Intel AMT policy
|
|
if (obj.agentExeInfo && (obj.agentExeInfo.amt == true) && (mesh.amt != null)) { // Only send Intel AMT policy to agents what could have AMT.
|
|
try { obj.send(JSON.stringify({ action: 'amtPolicy', amtPolicy: completeIntelAmtPolicy(common.Clone(mesh.amt)) })); } catch (ex) { }
|
|
}
|
|
|
|
// Do this if IP location is enabled on this domain TODO: Set IP location per device group?
|
|
if (domain.iplocation == true) {
|
|
// Check if we already have IP location information for this node
|
|
db.Get('iploc_' + obj.remoteaddr, function (err, iplocs) {
|
|
if (iplocs.length == 1) {
|
|
// We have a location in the database for this remote IP
|
|
const iploc = nodes[0], x = {};
|
|
if ((iploc != null) && (iploc.ip != null) && (iploc.loc != null)) {
|
|
x.publicip = iploc.ip;
|
|
x.iploc = iploc.loc + ',' + (Math.floor((new Date(iploc.date)) / 1000));
|
|
ChangeAgentLocationInfo(x);
|
|
}
|
|
} else {
|
|
// Check if we need to ask for the IP location
|
|
var doIpLocation = 0;
|
|
if (device.iploc == null) {
|
|
doIpLocation = 1;
|
|
} else {
|
|
const loc = device.iploc.split(',');
|
|
if (loc.length < 3) {
|
|
doIpLocation = 2;
|
|
} else {
|
|
var t = new Date((parseFloat(loc[2]) * 1000)), now = Date.now();
|
|
t.setDate(t.getDate() + 20);
|
|
if (t < now) { doIpLocation = 3; }
|
|
}
|
|
}
|
|
|
|
// If we need to ask for IP location, see if we have the quota to do it.
|
|
if (doIpLocation > 0) {
|
|
db.getValueOfTheDay('ipLocationRequestLimitor', 10, function (ipLocationLimitor) {
|
|
if (ipLocationLimitor.value > 0) {
|
|
ipLocationLimitor.value--;
|
|
db.Set(ipLocationLimitor);
|
|
obj.send(JSON.stringify({ action: 'iplocation' }));
|
|
}
|
|
});
|
|
}
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
// Get the web certificate private key hash for the specified domain
|
|
function getWebCertHash(domain) {
|
|
const hash = parent.webCertificateHashs[domain.id];
|
|
if (hash != null) return hash;
|
|
return parent.webCertificateHash;
|
|
}
|
|
|
|
// Get the web certificate hash for the specified domain
|
|
function getWebCertFullHash(domain) {
|
|
const hash = parent.webCertificateFullHashs[domain.id];
|
|
if (hash != null) return hash;
|
|
return parent.webCertificateFullHash;
|
|
}
|
|
|
|
// Verify the agent signature
|
|
function processAgentSignature(msg) {
|
|
if (args.ignoreagenthashcheck !== true) {
|
|
var verified = false;
|
|
|
|
if (msg.length != 384) {
|
|
// Verify a PKCS7 signature.
|
|
var msgDer = null;
|
|
try { msgDer = forge.asn1.fromDer(forge.util.createBuffer(msg, 'binary')); } catch (ex) { }
|
|
if (msgDer != null) {
|
|
try {
|
|
var p7 = forge.pkcs7.messageFromAsn1(msgDer);
|
|
var sig = p7.rawCapture.signature;
|
|
|
|
// Verify with key hash
|
|
var buf = Buffer.from(getWebCertHash(domain) + obj.nonce + obj.agentnonce, 'binary');
|
|
var verifier = parent.crypto.createVerify('RSA-SHA384');
|
|
verifier.update(buf);
|
|
verified = verifier.verify(obj.unauth.nodeCertPem, sig, 'binary');
|
|
if (verified == false) {
|
|
// Verify with full hash
|
|
buf = Buffer.from(getWebCertFullHash(domain) + obj.nonce + obj.agentnonce, 'binary');
|
|
verifier = parent.crypto.createVerify('RSA-SHA384');
|
|
verifier.update(buf);
|
|
verified = verifier.verify(obj.unauth.nodeCertPem, sig, 'binary');
|
|
}
|
|
if (verified == false) { return false; } // Not a valid signature
|
|
} catch (ex) { };
|
|
}
|
|
}
|
|
|
|
if (verified == false) {
|
|
// Verify the RSA signature. This is the fast way, without using forge.
|
|
const verify = parent.crypto.createVerify('SHA384');
|
|
verify.end(Buffer.from(getWebCertHash(domain) + obj.nonce + obj.agentnonce, 'binary')); // Test using the private key hash
|
|
if (verify.verify(obj.unauth.nodeCertPem, Buffer.from(msg, 'binary')) !== true) {
|
|
const verify2 = parent.crypto.createVerify('SHA384');
|
|
verify2.end(Buffer.from(getWebCertFullHash(domain) + obj.nonce + obj.agentnonce, 'binary')); // Test using the full cert hash
|
|
if (verify2.verify(obj.unauth.nodeCertPem, Buffer.from(msg, 'binary')) !== true) { return false; }
|
|
}
|
|
}
|
|
}
|
|
|
|
// Connection is a success, clean up
|
|
obj.nodeid = obj.unauth.nodeid;
|
|
obj.dbNodeKey = 'node/' + domain.id + '/' + obj.nodeid;
|
|
delete obj.nonce;
|
|
delete obj.agentnonce;
|
|
delete obj.unauth;
|
|
delete obj.receivedCommands;
|
|
if (obj.unauthsign) delete obj.unauthsign;
|
|
parent.parent.debug(1, 'Verified agent connection to ' + obj.nodeid + ' (' + obj.remoteaddrport + ').');
|
|
obj.authenticated = 1;
|
|
return true;
|
|
}
|
|
|
|
// Process incoming agent JSON data
|
|
function processAgentData(msg) {
|
|
var i, str = msg.toString('utf8'), command = null;
|
|
if (str[0] == '{') {
|
|
try { command = JSON.parse(str); } catch (ex) { console.log('Unable to parse agent JSON (' + obj.remoteaddrport + '): ' + str, ex); return; } // If the command can't be parsed, ignore it.
|
|
if (typeof command != 'object') { return; }
|
|
switch (command.action) {
|
|
case 'msg':
|
|
{
|
|
// Route a message.
|
|
// If this command has a sessionid, that is the target.
|
|
if (command.sessionid != null) {
|
|
if (typeof command.sessionid != 'string') break;
|
|
var splitsessionid = command.sessionid.split('/');
|
|
// Check that we are in the same domain and the user has rights over this node.
|
|
if ((splitsessionid[0] == 'user') && (splitsessionid[1] == domain.id)) {
|
|
// Check if this user has rights to get this message
|
|
//if (mesh.links[user._id] == null || ((mesh.links[user._id].rights & 16) == 0)) return; // TODO!!!!!!!!!!!!!!!!!!!!!
|
|
|
|
// See if the session is connected. If so, go ahead and send this message to the target node
|
|
var ws = parent.wssessions2[command.sessionid];
|
|
if (ws != null) {
|
|
command.nodeid = obj.dbNodeKey; // Set the nodeid, required for responses.
|
|
delete command.sessionid; // Remove the sessionid, since we are sending to that sessionid, so it's implyed.
|
|
try { ws.send(JSON.stringify(command)); } catch (ex) { }
|
|
} else if (parent.parent.multiServer != null) {
|
|
// See if we can send this to a peer server
|
|
var serverid = parent.wsPeerSessions2[command.sessionid];
|
|
if (serverid != null) {
|
|
command.fromNodeid = obj.dbNodeKey;
|
|
parent.parent.multiServer.DispatchMessageSingleServer(command, serverid);
|
|
}
|
|
}
|
|
}
|
|
} else if (command.userid != null) { // If this command has a userid, that is the target.
|
|
if (typeof command.userid != 'string') break;
|
|
var splituserid = command.userid.split('/');
|
|
// Check that we are in the same domain and the user has rights over this node.
|
|
if ((splituserid[0] == 'user') && (splituserid[1] == domain.id)) {
|
|
// Check if this user has rights to get this message
|
|
//if (mesh.links[user._id] == null || ((mesh.links[user._id].rights & 16) == 0)) return; // TODO!!!!!!!!!!!!!!!!!!!!!
|
|
|
|
// See if the session is connected
|
|
var sessions = parent.wssessions[command.userid];
|
|
|
|
// Go ahead and send this message to the target node
|
|
if (sessions != null) {
|
|
command.nodeid = obj.dbNodeKey; // Set the nodeid, required for responses.
|
|
delete command.userid; // Remove the userid, since we are sending to that userid, so it's implyed.
|
|
for (i in sessions) { sessions[i].send(JSON.stringify(command)); }
|
|
}
|
|
|
|
if (parent.parent.multiServer != null) {
|
|
// TODO: Add multi-server support
|
|
}
|
|
}
|
|
} else { // Route this command to the mesh
|
|
command.nodeid = obj.dbNodeKey;
|
|
var cmdstr = JSON.stringify(command);
|
|
for (var userid in parent.wssessions) { // Find all connected users for this mesh and send the message
|
|
var user = parent.users[userid];
|
|
if ((user != null) && (user.links != null)) {
|
|
var rights = user.links[obj.dbMeshKey];
|
|
if (rights != null) { // TODO: Look at what rights are needed for message routing
|
|
var xsessions = parent.wssessions[userid];
|
|
// Send the message to all users on this server
|
|
for (i in xsessions) { try { xsessions[i].send(cmdstr); } catch (e) { } }
|
|
}
|
|
}
|
|
}
|
|
|
|
// Send the message to all users of other servers
|
|
if (parent.parent.multiServer != null) {
|
|
delete command.nodeid;
|
|
command.fromNodeid = obj.dbNodeKey;
|
|
command.meshid = obj.dbMeshKey;
|
|
parent.parent.multiServer.DispatchMessage(command);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case 'coreinfo':
|
|
{
|
|
// Sent by the agent to update agent information
|
|
ChangeAgentCoreInfo(command);
|
|
break;
|
|
}
|
|
case 'smbios':
|
|
{
|
|
// Store the RAW SMBios table of this computer
|
|
// We store SMBIOS information as a string because we don't want the MongoDB to attempt to store all of the sub-documents seperatly.
|
|
// If an agent sends an insanely large SMBIOS table, don't store it.
|
|
try {
|
|
var smbiosstr = JSON.stringify(command.value);
|
|
if (smbiosstr.length < 65535) { db.SetSMBIOS({ _id: obj.dbNodeKey, domain: domain.id, time: new Date(), value: smbiosstr }); }
|
|
} catch (ex) { }
|
|
|
|
// Event the node interface information change (This is a lot of traffic, probably don't need this).
|
|
//parent.parent.DispatchEvent(['*', obj.meshid], obj, { action: 'smBiosChange', nodeid: obj.dbNodeKey, domain: domain.id, smbios: command.value, nolog: 1 });
|
|
|
|
break;
|
|
}
|
|
case 'netinfo':
|
|
{
|
|
// Sent by the agent to update agent network interface information
|
|
delete command.action;
|
|
command.updateTime = Date.now();
|
|
command._id = 'if' + obj.dbNodeKey;
|
|
command.type = 'ifinfo';
|
|
db.Set(command);
|
|
|
|
// Event the node interface information change
|
|
parent.parent.DispatchEvent(['*', obj.meshid], obj, { action: 'ifchange', nodeid: obj.dbNodeKey, domain: domain.id, nolog: 1 });
|
|
|
|
break;
|
|
}
|
|
case 'iplocation':
|
|
{
|
|
// Sent by the agent to update location information
|
|
if ((command.type == 'publicip') && (command.value != null) && (typeof command.value == 'object') && (command.value.ip) && (command.value.loc)) {
|
|
var x = {};
|
|
x.publicip = command.value.ip;
|
|
x.iploc = command.value.loc + ',' + (Math.floor(Date.now() / 1000));
|
|
ChangeAgentLocationInfo(x);
|
|
command.value._id = 'iploc_' + command.value.ip;
|
|
command.value.type = 'iploc';
|
|
command.value.date = Date.now();
|
|
db.Set(command.value); // Store the IP to location data in the database
|
|
// Sample Value: { ip: '192.55.64.246', city: 'Hillsboro', region: 'Oregon', country: 'US', loc: '45.4443,-122.9663', org: 'AS4983 Intel Corporation', postal: '97123' }
|
|
}
|
|
break;
|
|
}
|
|
case 'mc1migration':
|
|
{
|
|
if (command.oldnodeid.length != 64) break;
|
|
const oldNodeKey = 'node//' + command.oldnodeid.toLowerCase();
|
|
db.Get(oldNodeKey, function (err, nodes) {
|
|
if (nodes.length != 1) return;
|
|
const node = nodes[0];
|
|
if (node.meshid == obj.dbMeshKey) {
|
|
// Update the device name & host
|
|
const newNode = { "name": node.name };
|
|
if (node.intelamt != null) { newNode.intelamt = node.intelamt; }
|
|
ChangeAgentCoreInfo(newNode);
|
|
|
|
// Delete this node including network interface information and events
|
|
db.Remove(node._id);
|
|
db.Remove('if' + node._id);
|
|
|
|
// Event node deletion
|
|
const change = 'Migrated device ' + node.name;
|
|
parent.parent.DispatchEvent(['*', node.meshid], obj, { etype: 'node', action: 'removenode', nodeid: node._id, msg: change, domain: node.domain });
|
|
}
|
|
});
|
|
break;
|
|
}
|
|
case 'openUrl':
|
|
{
|
|
// Sent by the agent to return the status of a open URL action.
|
|
// Nothing is done right now.
|
|
break;
|
|
}
|
|
case 'getScript':
|
|
{
|
|
// Used by the agent to get configuration scripts.
|
|
if (command.type == 1) {
|
|
parent.getCiraConfigurationScript(obj.dbMeshKey, function (script) {
|
|
obj.send(JSON.stringify({ action: 'getScript', type: 1, script: script.toString() }));
|
|
});
|
|
} else if (command.type == 2) {
|
|
parent.getCiraCleanupScript(function (script) {
|
|
obj.send(JSON.stringify({ action: 'getScript', type: 2, script: script.toString() }));
|
|
});
|
|
}
|
|
break;
|
|
}
|
|
case 'diagnostic':
|
|
{
|
|
if (typeof command.value == 'object') {
|
|
switch (command.value.command) {
|
|
case 'register': {
|
|
// Only main agent can do this
|
|
if (((obj.agentInfo.capabilities & 0x40) == 0) && (typeof command.value.command.value == 'string') && (command.value.command.value.length == 64)) {
|
|
// Store links to diagnostic agent id
|
|
var daNodeKey = 'node/' + domain.id + '/' + command.value.command.value;
|
|
db.Set({ _id: 'da' + daNodeKey, domain: domain.id, time: obj.connectTime, raid: obj.dbNodeKey }); // DiagnosticAgent --> Agent
|
|
db.Set({ _id: 'ra' + obj.dbNodeKey, domain: domain.id, time: obj.connectTime, daid: daNodeKey }); // Agent --> DiagnosticAgent
|
|
}
|
|
break;
|
|
}
|
|
case 'query': {
|
|
// Only the diagnostic agent can do
|
|
if ((obj.agentInfo.capabilities & 0x40) != 0) {
|
|
// Return nodeid of main agent + connection status
|
|
db.Get('da' + obj.dbNodeKey, function (err, nodes) {
|
|
if (nodes.length == 1) {
|
|
obj.realNodeKey = nodes[0].raid;
|
|
obj.send(JSON.stringify({ action: 'diagnostic', value: { command: 'query', value: obj.realNodeKey } }));
|
|
} else {
|
|
obj.send(JSON.stringify({ action: 'diagnostic', value: { command: 'query', value: null } }));
|
|
}
|
|
});
|
|
}
|
|
break;
|
|
}
|
|
case 'log': {
|
|
// Only the diagnostic agent can do
|
|
if (((obj.agentInfo.capabilities & 0x40) != 0) && (typeof command.value.command.value == 'string') && (command.value.command.value.length < 256)) {
|
|
// Log a value in the event log of the main again
|
|
var event = { etype: 'node', action: 'diagnostic', nodeid: obj.dbNodeKey, domain: domain.id, msg: command.value.command.value };
|
|
parent.parent.DispatchEvent(['*', obj.dbMeshKey], obj, event);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
default: {
|
|
console.log('Unknown agent action (' + obj.remoteaddrport + '): ' + command.action + '.');
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Change the current core information string and event it
|
|
function ChangeAgentCoreInfo(command) {
|
|
if (obj.agentInfo.capabilities & 0x40) return;
|
|
if ((command == null) || (command == null)) return; // Safety, should never happen.
|
|
|
|
// Check that the mesh exists
|
|
const mesh = parent.meshes[obj.dbMeshKey];
|
|
if (mesh == null) return;
|
|
|
|
// Get the node and change it if needed
|
|
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;
|
|
const device = nodes[0];
|
|
if (device.agent) {
|
|
var changes = [], change = 0, log = 0;
|
|
|
|
//if (command.users) { console.log(command.users); }
|
|
|
|
// Check if anything changes
|
|
if (command.name && (command.name != device.name)) { change = 1; log = 1; device.name = command.name; changes.push('name'); }
|
|
if ((command.caps != null) && (device.agent.core != command.value)) { if ((command.value == null) && (device.agent.core != null)) { delete device.agent.core; } else { device.agent.core = command.value; } change = 1; } // Don't save this as an event to the db.
|
|
if ((command.caps != null) && ((device.agent.caps & 0xFFFFFFE7) != (command.caps & 0xFFFFFFE7))) { device.agent.caps = ((device.agent.caps & 24) + (command.caps & 0xFFFFFFE7)); change = 1; } // Allow Javascript on the agent to change all capabilities except console and javascript support, Don't save this as an event to the db.
|
|
if ((command.osdesc != null) && (device.osdesc != command.osdesc)) { device.osdesc = command.osdesc; change = 1; changes.push('os desc'); } // Don't save this as an event to the db.
|
|
if (device.ip != obj.remoteaddr) { device.ip = obj.remoteaddr; change = 1; }
|
|
if (command.intelamt) {
|
|
if (!device.intelamt) { device.intelamt = {}; }
|
|
if ((command.intelamt.ver != null) && (device.intelamt.ver != command.intelamt.ver)) { changes.push('AMT version'); device.intelamt.ver = command.intelamt.ver; change = 1; log = 1; }
|
|
if ((command.intelamt.state != null) && (device.intelamt.state != command.intelamt.state)) { changes.push('AMT state'); device.intelamt.state = command.intelamt.state; change = 1; log = 1; }
|
|
if ((command.intelamt.flags != null) && (device.intelamt.flags != command.intelamt.flags)) {
|
|
if (device.intelamt.flags) { changes.push('AMT flags (' + device.intelamt.flags + ' --> ' + command.intelamt.flags + ')'); } else { changes.push('AMT flags (' + command.intelamt.flags + ')'); }
|
|
device.intelamt.flags = command.intelamt.flags; change = 1; log = 1;
|
|
}
|
|
if ((command.intelamt.host != null) && (device.intelamt.host != command.intelamt.host)) { changes.push('AMT host'); device.intelamt.host = command.intelamt.host; change = 1; log = 1; }
|
|
if ((command.intelamt.uuid != null) && (device.intelamt.uuid != command.intelamt.uuid)) { changes.push('AMT uuid'); device.intelamt.uuid = command.intelamt.uuid; change = 1; log = 1; }
|
|
if ((command.intelamt.user != null) && (device.intelamt.user != command.intelamt.user)) { changes.push('AMT user'); device.intelamt.user = command.intelamt.user; change = 1; log = 1; }
|
|
if ((command.intelamt.pass != null) && (device.intelamt.pass != command.intelamt.pass)) { changes.push('AMT pass'); device.intelamt.pass = command.intelamt.pass; change = 1; log = 1; }
|
|
}
|
|
if ((command.users != null) && (device.users != command.users)) { device.users = command.users; change = 1; } // Don't save this to the db.
|
|
if ((mesh.mtype == 2) && (!args.wanonly)) {
|
|
// In WAN mode, the hostname of a computer is not important. Don't log hostname changes.
|
|
if (device.host != obj.remoteaddr) { device.host = obj.remoteaddr; change = 1; changes.push('host'); }
|
|
// TODO: Check that the agent has an interface that is the same as the one we got this websocket connection on. Only set if we have a match.
|
|
}
|
|
|
|
// If there are changes, event the new device
|
|
if (change == 1) {
|
|
// Save to the database
|
|
db.Set(device);
|
|
|
|
// Event the node change
|
|
var event = { etype: 'node', action: 'changenode', nodeid: obj.dbNodeKey, domain: domain.id };
|
|
if (changes.length > 0) { event.msg = 'Changed device ' + device.name + ' from group ' + mesh.name + ': ' + changes.join(', '); }
|
|
if ((log == 0) || (obj.agentInfo.capabilities & 0x20) || (changes.length == 0)) { event.nolog = 1; } // If this is a temporary device, don't log changes
|
|
var device2 = common.Clone(device);
|
|
if (device2.intelamt && device2.intelamt.pass) { delete device2.intelamt.pass; } // Remove the Intel AMT password before eventing this.
|
|
event.node = device;
|
|
parent.parent.DispatchEvent(['*', device.meshid], obj, event);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
// Change the current core information string and event it
|
|
function ChangeAgentLocationInfo(command) {
|
|
if (obj.agentInfo.capabilities & 0x40) return;
|
|
if ((command == null) || (command == null)) { return; } // Safety, should never happen.
|
|
|
|
// Check that the mesh exists
|
|
const mesh = parent.meshes[obj.dbMeshKey];
|
|
if (mesh == null) return;
|
|
|
|
// Get the node and change it if needed
|
|
db.Get(obj.dbNodeKey, function (err, nodes) {
|
|
if (nodes.length != 1) { return; }
|
|
const device = nodes[0];
|
|
if (device.agent) {
|
|
var changes = [], change = 0;
|
|
|
|
// Check if anything changes
|
|
if ((command.publicip) && (device.publicip != command.publicip)) { device.publicip = command.publicip; change = 1; changes.push('public ip'); }
|
|
if ((command.iploc) && (device.iploc != command.iploc)) { device.iploc = command.iploc; change = 1; changes.push('ip location'); }
|
|
|
|
// If there are changes, save and event
|
|
if (change == 1) {
|
|
db.Set(device);
|
|
|
|
// Event the node change
|
|
var event = { etype: 'node', action: 'changenode', nodeid: obj.dbNodeKey, domain: domain.id, msg: 'Changed device ' + device.name + ' from group ' + mesh.name + ': ' + changes.join(', ') };
|
|
if (obj.agentInfo.capabilities & 0x20) { event.nolog = 1; } // If this is a temporary device, don't log changes
|
|
var device2 = common.Clone(device);
|
|
if (device2.intelamt && device2.intelamt.pass) { delete device2.intelamt.pass; } // Remove the Intel AMT password before eventing this.
|
|
event.node = device;
|
|
parent.parent.DispatchEvent(['*', device.meshid], obj, event);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
// Update the mesh agent tab in the database
|
|
function ChangeAgentTag(tag) {
|
|
if (obj.agentInfo.capabilities & 0x40) return;
|
|
if (tag.length == 0) { tag = null; }
|
|
// Get the node and change it if needed
|
|
db.Get(obj.dbNodeKey, function (err, nodes) {
|
|
if (nodes.length != 1) return;
|
|
const device = nodes[0];
|
|
if (device.agent) {
|
|
if (device.agent.tag != tag) {
|
|
device.agent.tag = tag;
|
|
db.Set(device);
|
|
|
|
// Event the node change
|
|
var event = { etype: 'node', action: 'changenode', nodeid: obj.dbNodeKey, domain: domain.id, nolog: 1 };
|
|
var device2 = common.Clone(device);
|
|
if (device2.intelamt && device2.intelamt.pass) delete device2.intelamt.pass; // Remove the Intel AMT password before eventing this.
|
|
event.node = device;
|
|
parent.parent.DispatchEvent(['*', device.meshid], obj, event);
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
return obj;
|
|
};
|