mirror of
https://github.com/Ylianst/MeshCentral.git
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378 lines
23 KiB
JavaScript
378 lines
23 KiB
JavaScript
/**
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* @description MeshCentral v1 legacy Swarm Server, used to update agents and get them on MeshCentral2
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* @author Ylian Saint-Hilaire
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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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/*jslint node: true */
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/*jshint node: true */
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/*jshint strict:false */
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/*jshint -W097 */
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/*jshint esversion: 6 */
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"use strict";
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// Construct a legacy Swarm Server server object
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module.exports.CreateSwarmServer = function (parent, db, args, certificates) {
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var obj = {};
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obj.parent = parent;
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obj.db = db;
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obj.args = args;
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obj.certificates = certificates;
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obj.legacyAgentConnections = {};
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obj.migrationAgents = {};
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const common = require('./common.js');
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//const net = require('net');
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const tls = require('tls');
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const forge = require('node-forge');
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const LegacyMeshProtocol = {
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NODEPUSH: 1, // Used to send a node block to another peer.
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NODEPULL: 2, // Used to send a pull block to another peer.
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NODENOTIFY: 3, // Used to indicate the node ID to other peers.
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NODECHALLENGE: 4, // Used to challenge a node identity.
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NODECRESPONSE: 5, // Used to respond to a node challenge.
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TARGETSTATUS: 6, // Used to send the peer connection status list.
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LOCALEVENT: 7, // Used to send local events to subscribers.
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AESCRYPTO: 8, // Used to send an encrypted block of data.
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SESSIONKEY: 9, // Used to send a session key to a remote node.
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SYNCSTART: 10, // Used to send kick off the SYNC request, send the start NodeID.
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SYNCMETADATA: 11, // Used to send a sequence of NodeID & serial numbers.
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SYNCREQUEST: 12, // Used to send a sequence of NodeID's to request.
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NODEID: 13, // Used to send the NodeID in the clear. Used for multicast.
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AGENTID: 14, // Used to send the AgentID & version to the other node.
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PING: 15, // Used to query a target for the presence of the mesh agent (PB_NODEID response expected).
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SETUPADMIN: 16, // Used to set the trusted mesh identifier, this code can only be used from local settings file.
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POLICY: 17, // Used to send a policy block to another peer.
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POLICYSECRET: 18, // Used to encode the PKCS12 private key of a policy block.
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EVENTMASK: 19, // Used by the mesh service to change the event mask.
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RECONNECT: 20, // Used by the mesh service to indicate disconnect & reconnection after n seconds.
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GETSTATE: 21, // Used by the mesh service to obtain agent state.
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CERTENCRYPTED: 22, // Used to send a certificate encrypted message to a node.
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GETCOOKIE: 23, // Used to request a certificate encryption anti-replay cookie.
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COOKIE: 24, // Used to carry an anti-replay cookie to a requestor.
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SESSIONCKEY: 25, // Used to send a session key to a remote console.
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INTERFACE: 26, // Used to send a local interface blob to a management console.
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MULTICAST: 27, // Used by the mesh service to cause the agent to send a multicast.
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SELFEXE: 28, // Used to transfer our own agent executable.
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LEADERBADGE: 29, // User to send a leadership badge.
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NODEINFO: 30, // Used to indicate a block information update to the web service.
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TARGETEVENT: 31, // Used to send a single target update event.
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DEBUG: 33, // Used to send debug information to web service.
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TCPRELAY: 34, // Used to operate mesh leader TCP relay sockets
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CERTSIGNED: 35, // Used to send a certificate signed message to a node.
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ERRORCODE: 36, // Used to notify of an error.
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MESSAGE: 37, // Used to route messages between nodes.
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CMESSAGE: 38, // Used to embed a interface identifier along with a PB_MESSAGE.
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EMESSAGE: 39, // Used to embed a target encryption certificate along with a MESSAGE or CMESSAGE.
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SEARCH: 40, // Used to send a custom search to one or more remote nodes.
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MESSAGERELAY: 41, // Used by no-certificate consoles to send hopping messages to nodes.
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USERINPUT: 42, // Used to send user keyboard input to a target computer
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APPID: 43, // Used to send a block of data to a specific application identifier.
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APPSUBSCRIBE: 44, // Used to perform local app subscription to an agent.
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APPDIRECT: 45, // Used to send message directly to remote applications.
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APPREQACK: 46, // Used to request an ack message.
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APPACK: 47, // Used to ack a received message.
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SERVERECHO: 48, // Server will echo this message, used for testing.
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KVMINFO: 49, // Used to send local KVM slave process information to mesh agent.
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REMOTEWAKE: 50, // Used to send remote wake information to server.
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NEWCONNECTTOKEN: 51, // Used to send a new connection token to the Swarm Server.
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WIFISCAN: 52, // Used to send visible WIFI AP's to the server.
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AMTPROVISIONING: 53, // Used by the agent to send Intel AMT provisioning information to the server.
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ANDROIDCOMMAND: 54, // Send a Android OS specific command (Android only).
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NODEAPPDATA: 55, // Used to send application specific data block to the server for storage.
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PROXY: 56, // Used to indicate the currently used proxy setting string.
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FILEOPERATION: 57, // Used to perform short file operations.
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APPSUBSCRIBERS: 58, // Used request and send to the mesh server the list of subscribed applications
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CUSTOM: 100, // Message containing application specific data.
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USERAUTH: 1000, // Authenticate a user to the swarm server.
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USERMESH: 1001, // Request or return the mesh list for this console.
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USERMESHS: 1002, // Send mesh overview information to the console.
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USERNODES: 1003, // Send node overview information to the console.
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JUSERMESHS: 1004, // Send mesh overview information to the console in JSON format.
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JUSERNODES: 1005, // Send node overview information to the console in JSON format.
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USERPOWERSTATE: 1006, // Used to send a power command from the console to the server.
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JMESHPOWERTIMELINE: 1007, // Send the power timeline for all nodes in a mesh.
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JMESHPOWERSUMMARY: 1008, // Send the power summary for sum of all nodes in a mesh.
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USERCOMMAND: 1009, // Send a user admin text command to and from the server.
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POWERBLOCK: 1010, // Request/Response of block of power state information.
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MESHACCESSCHANGE: 1011, // Notify a console of a change in accessible meshes.
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COOKIEAUTH: 1012, // Authenticate a user using a crypto cookie.
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NODESTATECHANGE: 1013, // Indicates a node has changed power state.
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JUSERNODE: 1014, // Send node overview information to the console in JSON format.
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AMTWSMANEVENT: 1015, // Intel AMT WSMAN event sent to consoles.
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ROUTINGCOOKIE: 1016, // Used by a console to request a routing cookie.
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JCOLLABORATION: 1017, // Request/send back JSON collaboration state.
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JRELATIONS: 1018, // Request/send back JSON relations state.
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SETCOLLABSTATE: 1019, // Set the collaboration state for this session.
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ADDRELATION: 1020, // Request that a new relation be added.
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DELETERELATION: 1021, // Request a relation be deleted.
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ACCEPTRELATION: 1022, // Request relation invitation be accepted.
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RELATIONCHANGEEVENT: 1023, // Notify that a relation has changed.
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COLLBCHANGEEVENT: 1024, // Notify that a collaboration state has change.
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MULTICONSOLEMESSAGE: 1025, // Send a message to one or more console id's.
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CONSOLEID: 1026, // Notify a console of it's console id.
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CHANGERELATIONDATA: 1027, // Request that relation data be changed.
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SETUSERDATA: 1028, // Set user data
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GETUSERDATA: 1029, // Get user data
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SERVERAUTH: 1030, // Used to verify the certificate of the server
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USERAUTH2: 1031, // Authenticate a user to the swarm server (Uses SHA1 SALT)
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GUESTREMOTEDESKTOP: 2001, // Guest usage: Remote Desktop
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GUESTWEBRTCMESH: 2002 // Guest usage: WebRTC Mesh
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};
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obj.server = tls.createServer({ key: certificates.swarmserver.key, cert: certificates.swarmserver.cert, requestCert: true, rejectUnauthorized: false }, onConnection);
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obj.server.listen(args.swarmport, function () { console.log('MeshCentral Legacy Swarm Server running on ' + certificates.CommonName + ':' + args.swarmport + '.'); obj.parent.updateServerState('swarm-port', args.swarmport); }).on('error', function (err) { console.error('ERROR: MeshCentral Swarm Server server port ' + args.swarmport + ' is not available.'); if (args.exactports) { process.exit(); } });
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loadMigrationAgents();
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// Load all migration agents along with full executable in memory
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function loadMigrationAgents() {
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var migrationAgentsDir = null, migrationAgentsPath = obj.parent.path.join(obj.parent.datapath, 'migrationagents');
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try { migrationAgentsDir = obj.parent.fs.readdirSync(migrationAgentsPath); } catch (e) { }
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if (migrationAgentsDir != null) {
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for (var i in migrationAgentsDir) {
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if (migrationAgentsDir[i].toLowerCase().startsWith('meshagent-')) {
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var migrationAgentName = obj.parent.path.join(migrationAgentsPath, migrationAgentsDir[i]);
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var agentInfo = migrationAgentsDir[i].substring(10).split('.');
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var agentVersion = parseInt(agentInfo[0]);
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var agentArch = parseInt(agentInfo[1]);
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var agentBinary = obj.parent.fs.readFileSync(migrationAgentName);
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if (obj.migrationAgents[agentArch] == null) { obj.migrationAgents[agentArch] = {}; }
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if (obj.migrationAgents[agentArch][agentVersion] == null) { obj.migrationAgents[agentArch][agentVersion] = { arch: agentArch, ver: agentVersion, path: migrationAgentName, binary: agentBinary }; }
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}
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}
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}
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}
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// Called when a legacy agent connects to this server
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function onConnection(socket) {
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// Check for blocked IP address
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if (checkSwarmIpAddress(socket, obj.args.swarmallowedip) == false) { Debug(1, "SWARM:New blocked agent connection"); return; }
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socket.tag = { first: true, clientCert: socket.getPeerCertificate(true), accumulator: "", socket: socket };
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socket.setEncoding('binary');
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socket.pingTimer = setInterval(function () { obj.SendCommand(socket, LegacyMeshProtocol.PING); }, 20000);
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Debug(1, 'SWARM:New legacy agent connection');
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socket.addListener("data", function (data) {
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if (args.swarmdebug) { var buf = Buffer.from(data, "binary"); console.log('SWARM <-- (' + buf.length + '):' + buf.toString('hex')); } // Print out received bytes
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socket.tag.accumulator += data;
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// Detect if this is an HTTPS request, if it is, return a simple answer and disconnect. This is useful for debugging access to the MPS port.
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if (socket.tag.first == true) {
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if (socket.tag.accumulator.length < 3) return;
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if (socket.tag.accumulator.substring(0, 3) == 'GET') { /*console.log("Swarm Connection, HTTP GET detected: " + socket.remoteAddress);*/ socket.write('HTTP/1.1 200 OK\r\nContent-Type: text/html\r\nConnection: close\r\n\r\n<!DOCTYPE html><html><head><meta charset="UTF-8"></head><body>MeshCentral2 legacy swarm server.<br />MeshCentral1 mesh agents should connect here for updates.</body></html>'); socket.end(); return; }
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socket.tag.first = false;
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}
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// A client certificate is required
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if (!socket.tag.clientCert.subject) { /*console.log("Swarm Connection, no client cert: " + socket.remoteAddress);*/ socket.write('HTTP/1.1 200 OK\r\nContent-Type: text/plain\r\nConnection: close\r\n\r\nMeshCentral2 legacy swarm server.\r\nNo client certificate given.'); socket.end(); return; }
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try {
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// Parse all of the APF data we can
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var l = 0;
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do { l = ProcessCommand(socket); if (l > 0) { socket.tag.accumulator = socket.tag.accumulator.substring(l); } } while (l > 0);
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if (l < 0) { socket.end(); }
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} catch (e) {
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console.log(e);
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}
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});
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// Process one AFP command
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function ProcessCommand(socket) {
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if (socket.tag.accumulator.length < 4) return 0;
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var cmd = common.ReadShort(socket.tag.accumulator, 0);
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var len = common.ReadShort(socket.tag.accumulator, 2);
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if (len > socket.tag.accumulator.length) return 0;
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var data = socket.tag.accumulator.substring(4, len);
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//console.log('Swarm: Cmd=' + cmd + ', Len=' + len + '.');
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switch (cmd) {
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case LegacyMeshProtocol.NODEPUSH: {
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Debug(3, 'Swarm:NODEPUSH');
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var nodeblock = obj.decodeNodeBlock(data);
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if ((nodeblock != null) && (nodeblock.agenttype != null) && (nodeblock.agentversion != null)) {
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Debug(3, 'Swarm:NODEPUSH:' + JSON.stringify(nodeblock));
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// Figure out what is the next agent version we need.
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var nextAgentVersion = 0;
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if (nodeblock.agentversion < 201) { nextAgentVersion = 201; } // If less then 201, move to transitional MC1 agent.
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if (nodeblock.agentversion == 201) { nextAgentVersion = 202; } // If at 201, move to first MC2 agent.
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// See if we need to start the agent update
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if ((nextAgentVersion > 0) && (obj.migrationAgents[nodeblock.agenttype] != null) && (obj.migrationAgents[nodeblock.agenttype][nextAgentVersion] != null)) {
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// Start the update
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socket.tag.update = obj.migrationAgents[nodeblock.agenttype][nextAgentVersion];
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socket.tag.updatePtr = 0;
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console.log('Performing legacy agent update from ' + nodeblock.agentversion + '.' + nodeblock.agenttype + ' to ' + socket.tag.update.ver + '.' + socket.tag.update.arch + ' on ' + nodeblock.agentname + '.');
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obj.SendCommand(socket, LegacyMeshProtocol.GETSTATE, common.IntToStr(5) + common.IntToStr(0)); // agent.SendQuery(5, 0); // Start the agent download
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} else {
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console.log('No legacy agent update for ' + nodeblock.agentversion + '.' + nodeblock.agenttype + ' on ' + nodeblock.agentname + '.');
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}
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}
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break;
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}
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case LegacyMeshProtocol.AMTPROVISIONING: {
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Debug(3, 'Swarm:AMTPROVISIONING');
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obj.SendCommand(socket, LegacyMeshProtocol.AMTPROVISIONING, common.ShortToStr(1));
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break;
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}
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case LegacyMeshProtocol.GETSTATE: {
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Debug(3, 'Swarm:GETSTATE');
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if (len < 12) break;
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var statecmd = common.ReadInt(data, 0);
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//var statesync = common.ReadInt(data, 4);
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switch (statecmd) {
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case 6: { // Ask for agent block
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if (socket.tag.update != null) {
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// Send an agent block
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var l = Math.min(socket.tag.update.binary.length - socket.tag.updatePtr, 16384);
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obj.SendCommand(socket, LegacyMeshProtocol.GETSTATE, common.IntToStr(6) + common.IntToStr(socket.tag.updatePtr) + socket.tag.update.binary.toString('binary', socket.tag.updatePtr, socket.tag.updatePtr + l)); // agent.SendQuery(6, AgentFileLen + AgentBlock);
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Debug(3, 'Swarm:Sending agent block, ptr = ' + socket.tag.updatePtr + ', len = ' + l);
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socket.tag.updatePtr += l;
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if (socket.tag.updatePtr >= socket.tag.update.binary.length) {
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// Send end-of-transfer
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obj.SendCommand(socket, LegacyMeshProtocol.GETSTATE, common.IntToStr(7) + common.IntToStr(socket.tag.update.binary.length)); //agent.SendQuery(7, AgentFileLen);
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Debug(3, 'Swarm:Sending end of agent, ptr = ' + socket.tag.updatePtr);
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delete socket.tag.update;
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delete socket.tag.updatePtr;
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}
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}
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break;
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}
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default: {
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// All other state commands from the legacy agent must be ignored.
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break;
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}
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}
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break;
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}
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case LegacyMeshProtocol.APPSUBSCRIBERS: {
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Debug(3, 'Swarm:APPSUBSCRIBERS');
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break;
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}
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default: {
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Debug(1, 'Swarm:Unknown command: ' + cmd + ' of len ' + len + '.');
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}
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}
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return len;
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}
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socket.addListener("close", function () {
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Debug(1, 'Swarm:Connection closed');
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try { delete obj.ciraConnections[socket.tag.nodeid]; } catch (e) { }
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obj.parent.ClearConnectivityState(socket.tag.meshid, socket.tag.nodeid, 2);
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if (socket.pingTimer != null) { clearInterval(socket.pingTimer); delete socket.pingTimer; }
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});
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socket.addListener("error", function () {
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//console.log("Swarm Error: " + socket.remoteAddress);
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});
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}
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function getTagClass(data, tagClass, type) {
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if ((data == null) || (data.value == null)) return;
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for (var i in data.value) {
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//console.log(JSON.stringify(data.value[i]));
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if ((data.value[i].tagClass == tagClass) && (data.value[i].type == type)) {
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return data.value[i];
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}
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}
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}
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// Decode a node push block
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obj.decodeNodeBlock = function (data) {
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try {
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// Traverse the DER to get the raw data (Not sure if this works all the time)
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var info = {}, ptr = 68, der = forge.asn1.fromDer(forge.util.createBuffer(data, 'binary'));
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der = getTagClass(der, 128, 0);
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der = getTagClass(der, 0, 16);
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der = getTagClass(der, 0, 16);
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der = getTagClass(der, 128, 0);
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der = getTagClass(der, 0, 4);
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var binarydata = der.value;
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// Get the basic header values
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info.certhashhex = common.rstr2hex(binarydata.substring(0, 32)); // Hash of the complete mesh agent certificate
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info.nodeidhex = common.rstr2hex(binarydata.substring(32, 64)); // Old mesh agent nodeid
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info.serialNumber = common.ReadIntX(binarydata, 64); // Block serial number
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// Got thru the sub-blocks
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while (ptr < binarydata.length) {
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var btyp = common.ReadShort(binarydata, ptr), blen = common.ReadShort(binarydata, ptr + 2), bdata = binarydata.substring(ptr + 4, ptr + 4 + blen);
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switch (btyp) {
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case 1: { // PBST_COMPUTERINFO
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info.agenttype = common.ReadShortX(bdata, 0);
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info.agentbuild = common.ReadShortX(bdata, 2);
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info.agentversion = common.ReadIntX(bdata, 4);
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info.agentname = bdata.substring(8, 64 + 8);
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var xx = info.agentname.indexOf('\u0000');
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if (xx >= 0) { info.agentname = info.agentname.substring(0, xx); }
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info.agentosdesc = bdata.substring(64 + 8, 64 + 64 + 8);
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xx = info.agentosdesc.indexOf('\u0000');
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if (xx >= 0) { info.agentosdesc = info.agentosdesc.substring(0, xx); }
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return info;
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}
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default: {
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// All other commands from the legacy agent must be ignored.
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break;
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}
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}
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ptr += blen;
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}
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return info;
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} catch (e) {
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console.log(e);
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}
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return null;
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};
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// Disconnect legacy agent connection
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obj.close = function (socket) {
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try { socket.close(); } catch (e) { }
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try { delete obj.ciraConnections[socket.tag.nodeid]; } catch (e) { }
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obj.parent.ClearConnectivityState(socket.tag.meshid, socket.tag.nodeid, 2);
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};
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obj.SendCommand = function (socket, cmdid, data) {
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if (data == null) { data = ''; }
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Write(socket, common.ShortToStr(cmdid) + common.ShortToStr(data.length + 4) + data);
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};
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function Write(socket, data) {
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if (args.swarmdebug) {
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// Print out sent bytes
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var buf = Buffer.from(data, "binary");
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console.log('SWARM --> (' + buf.length + '):' + buf.toString('hex'));
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socket.write(buf);
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} else {
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socket.write(Buffer.from(data, "binary"));
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}
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}
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// Check if the source IP address is allowed for a given allowed list, return false if not
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function checkSwarmIpAddress(socket, allowedIpList) {
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if (allowedIpList == null) { return true; }
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try {
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var ip = socket.remoteAddress;
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if (ip) { for (var i = 0; i < allowedIpList.length; i++) { if (require('ipcheck').match(ip, allowedIpList[i])) { return true; } } }
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} catch (e) { console.log(e); }
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return false;
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}
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// Debug
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function Debug(lvl) {
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if (lvl > obj.parent.debugLevel) return;
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if (arguments.length == 2) { console.log(arguments[1]); }
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else if (arguments.length == 3) { console.log(arguments[1], arguments[2]); }
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else if (arguments.length == 4) { console.log(arguments[1], arguments[2], arguments[3]); }
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else if (arguments.length == 5) { console.log(arguments[1], arguments[2], arguments[3], arguments[4]); }
|
|
else if (arguments.length == 6) { console.log(arguments[1], arguments[2], arguments[3], arguments[4], arguments[5]); }
|
|
else if (arguments.length == 7) { console.log(arguments[1], arguments[2], arguments[3], arguments[4], arguments[5], arguments[6]); }
|
|
}
|
|
|
|
return obj;
|
|
};
|