/** * @description MeshCentral Intel(R) AMT APF over websocket server * @author Ylian Saint-Hilaire/Joko Sastriawan * @copyright Intel Corporation 2018-2019 * @license Apache-2.0 * @version v0.0.1 */ /*jslint node: true */ /*jshint node: true */ /*jshint strict:false */ /*jshint -W097 */ /*jshint esversion: 6 */ "use strict"; // Construct a Intel AMT APF server object module.exports.CreateApfServer = function (parent, db, args) { var obj = {}; obj.parent = parent; obj.db = db; obj.args = args; obj.apfConnections = {}; const constants = (require('crypto').constants ? require('crypto').constants : require('constants')); // require('constants') is deprecated in Node 11.10, use require('crypto').constants instead. const common = require("./common.js"); const net = require("net"); const MAX_IDLE = 90000; // 90 seconds max idle time, higher than the typical KEEP-ALIVE periode of 60 seconds const APFProtocol = { UNKNOWN: 0, DISCONNECT: 1, SERVICE_REQUEST: 5, SERVICE_ACCEPT: 6, USERAUTH_REQUEST: 50, USERAUTH_FAILURE: 51, USERAUTH_SUCCESS: 52, GLOBAL_REQUEST: 80, REQUEST_SUCCESS: 81, REQUEST_FAILURE: 82, CHANNEL_OPEN: 90, CHANNEL_OPEN_CONFIRMATION: 91, CHANNEL_OPEN_FAILURE: 92, CHANNEL_WINDOW_ADJUST: 93, CHANNEL_DATA: 94, CHANNEL_CLOSE: 97, PROTOCOLVERSION: 192, KEEPALIVE_REQUEST: 208, KEEPALIVE_REPLY: 209, KEEPALIVE_OPTIONS_REQUEST: 210, KEEPALIVE_OPTIONS_REPLY: 211 }; /* const APFDisconnectCode = { HOST_NOT_ALLOWED_TO_CONNECT: 1, PROTOCOL_ERROR: 2, KEY_EXCHANGE_FAILED: 3, RESERVED: 4, MAC_ERROR: 5, COMPRESSION_ERROR: 6, SERVICE_NOT_AVAILABLE: 7, PROTOCOL_VERSION_NOT_SUPPORTED: 8, HOST_KEY_NOT_VERIFIABLE: 9, CONNECTION_LOST: 10, BY_APPLICATION: 11, TOO_MANY_CONNECTIONS: 12, AUTH_CANCELLED_BY_USER: 13, NO_MORE_AUTH_METHODS_AVAILABLE: 14, INVALID_CREDENTIALS: 15, CONNECTION_TIMED_OUT: 16, BY_POLICY: 17, TEMPORARILY_UNAVAILABLE: 18 }; const APFChannelOpenFailCodes = { ADMINISTRATIVELY_PROHIBITED: 1, CONNECT_FAILED: 2, UNKNOWN_CHANNEL_TYPE: 3, RESOURCE_SHORTAGE: 4, }; */ const APFChannelOpenFailureReasonCode = { AdministrativelyProhibited: 1, ConnectFailed: 2, UnknownChannelType: 3, ResourceShortage: 4, }; // Stat counters var connectionCount = 0; var userAuthRequestCount = 0; var incorrectPasswordCount = 0; var meshNotFoundCount = 0; var unknownNodeCount = 0; var unknownMeshIdCount = 0; var addedDeviceCount = 0; var ciraTimeoutCount = 0; var protocolVersionCount = 0; var badUserNameLengthCount = 0; var channelOpenCount = 0; var channelOpenConfirmCount = 0; var channelOpenFailCount = 0; var channelCloseCount = 0; var disconnectCommandCount = 0; var socketClosedCount = 0; var socketErrorCount = 0; var maxDomainDevicesReached = 0; // Return statistics about this APF server obj.getStats = function () { return { apfConnections: Object.keys(obj.apfConnections).length, connectionCount: connectionCount, userAuthRequestCount: userAuthRequestCount, incorrectPasswordCount: incorrectPasswordCount, meshNotFoundCount: meshNotFoundCount, unknownNodeCount: unknownNodeCount, unknownMeshIdCount: unknownMeshIdCount, addedDeviceCount: addedDeviceCount, apfTimeoutCount: ciraTimeoutCount, protocolVersionCount: protocolVersionCount, badUserNameLengthCount: badUserNameLengthCount, channelOpenCount: channelOpenCount, channelOpenConfirmCount: channelOpenConfirmCount, channelOpenFailCount: channelOpenFailCount, channelCloseCount: channelCloseCount, disconnectCommandCount: disconnectCommandCount, socketClosedCount: socketClosedCount, socketErrorCount: socketErrorCount, maxDomainDevicesReached : maxDomainDevicesReached }; } obj.onConnection = function(socket) { connectionCount++; // treat APS over WS like tlsoffload APF socket.tag = { first: true, clientCert: null, accumulator: "", activetunnels: 0, boundPorts: [], socket: socket, host: null, nextchannelid: 4, channels: {}, nextsourceport: 0 }; parent.debug('apf', "New APF connection"); parent.debug('apf',"WS Extensions:"+socket.extensions); parent.debug('apf',"WS Binary type:"+socket.binaryType); //socket._socket.on('data', function(chunk) { console.log(chunk.toString('hex'))}); // Setup the APF keep alive timer // Websocket does not have timout // socket.setTimeout(MAX_IDLE); //socket.on("timeout", () => { ciraTimeoutCount++; parent.debug('apf', "APF timeout, disconnecting."); try { socket.terminate(); } catch (e) { } }); //use on message instead because of websocket socket.on("message", function (data) { // use the same debug flag like APF if (obj.args.debug) { var buf = Buffer.from(data, "binary"); console.log("APF <-- (" + buf.length + "):" + buf.toString('hex')); } // Print out received bytes socket.tag.accumulator += data.toString("binary"); // append as binary string try { // Parse all of the APF data we can var l = 0; do { l = ProcessCommand(socket); if (l > 0) { socket.tag.accumulator = socket.tag.accumulator.substring(l); } } while (l > 0); if (l < 0) { socket.terminate(); } } catch (e) { console.log(e); } }); // Process one AFP command function ProcessCommand(socket) { var cmd = socket.tag.accumulator.charCodeAt(0); var len = socket.tag.accumulator.length; var data = socket.tag.accumulator; if (len == 0) { return 0; } switch (cmd) { case APFProtocol.KEEPALIVE_REQUEST: { if (len < 5) return 0; parent.debug('apfcmd', 'KEEPALIVE_REQUEST'); SendKeepAliveReply(socket, common.ReadInt(data, 1)); return 5; } case APFProtocol.KEEPALIVE_REPLY: { if (len < 5) return 0; parent.debug('apfcmd', 'KEEPALIVE_REPLY'); return 5; } case APFProtocol.PROTOCOLVERSION: { if (len < 93) return 0; protocolVersionCount++; socket.tag.MajorVersion = common.ReadInt(data, 1); socket.tag.MinorVersion = common.ReadInt(data, 5); socket.tag.SystemId = guidToStr(common.rstr2hex(data.substring(13, 29))).toLowerCase(); parent.debug('apfcmd', 'PROTOCOLVERSION', socket.tag.MajorVersion, socket.tag.MinorVersion, socket.tag.SystemId); return 93; } case APFProtocol.USERAUTH_REQUEST: { if (len < 13) return 0; userAuthRequestCount++; var usernameLen = common.ReadInt(data, 1); var username = data.substring(5, 5 + usernameLen); var serviceNameLen = common.ReadInt(data, 5 + usernameLen); var serviceName = data.substring(9 + usernameLen, 9 + usernameLen + serviceNameLen); var methodNameLen = common.ReadInt(data, 9 + usernameLen + serviceNameLen); var methodName = data.substring(13 + usernameLen + serviceNameLen, 13 + usernameLen + serviceNameLen + methodNameLen); var passwordLen = 0, password = null; if (methodName == 'password') { passwordLen = common.ReadInt(data, 14 + usernameLen + serviceNameLen + methodNameLen); password = data.substring(18 + usernameLen + serviceNameLen + methodNameLen, 18 + usernameLen + serviceNameLen + methodNameLen + passwordLen); } //console.log('APF:USERAUTH_REQUEST user=' + username + ', service=' + serviceName + ', method=' + methodName + ', password=' + password); parent.debug('apfcmd', 'USERAUTH_REQUEST user=' + username + ', service=' + serviceName + ', method=' + methodName + ', password=' + password); // Check the APF password if ((args.mpspass != null) && (password != args.mpspass)) { incorrectPasswordCount++; parent.debug('apf', 'Incorrect password', username, password); SendUserAuthFail(socket); return -1; } // Check the APF username, which should be the start of the MeshID. if (usernameLen != 16) { badUserNameLengthCount++; parent.debug('apf', 'Username length not 16', username, password); SendUserAuthFail(socket); return -1; } var meshIdStart = '/' + username, mesh = null; if (obj.parent.webserver.meshes) { for (var i in obj.parent.webserver.meshes) { if (obj.parent.webserver.meshes[i]._id.replace(/\@/g, 'X').replace(/\$/g, 'X').indexOf(meshIdStart) > 0) { mesh = obj.parent.webserver.meshes[i]; break; } } } if (mesh == null) { meshNotFoundCount++; parent.debug('apf', 'Mesh not found', username, password); SendUserAuthFail(socket); return -1; } // If this is a agent-less mesh, use the device guid 3 times as ID. if (mesh.mtype == 1) { // Intel AMT GUID (socket.tag.SystemId) will be used as NodeID var systemid = socket.tag.SystemId.split('-').join(''); var nodeid = Buffer.from(systemid + systemid + systemid, 'hex').toString('base64').replace(/\+/g, '@').replace(/\//g, '$'); var domain = obj.parent.config.domains[mesh.domain]; socket.tag.domain = domain; socket.tag.domainid = mesh.domain; socket.tag.name = ''; socket.tag.nodeid = 'node/' + mesh.domain + '/' + nodeid; // Turn 16bit systemid guid into 48bit nodeid that is base64 encoded socket.tag.meshid = mesh._id; socket.tag.connectTime = Date.now(); obj.db.Get(socket.tag.nodeid, function (err, nodes) { if ((nodes == null) || (nodes.length !== 1)) { // Check if we already have too many devices for this domain if (domain.limits && (typeof domain.limits.maxdevices == 'number')) { db.isMaxType(domain.limits.maxdevices, 'node', mesh.domain, function (ismax, count) { if (ismax == true) { // Too many devices in this domain. maxDomainDevicesReached++; console.log('Too many devices on this domain to accept the APF connection. meshid: ' + socket.tag.meshid); socket.terminate(); } else { // We are under the limit, create the new device. // Node is not in the database, add it. Credentials will be empty until added by the user. var device = { type: 'node', mtype: 1, _id: socket.tag.nodeid, meshid: socket.tag.meshid, name: socket.tag.name, host: null, domain: mesh.domain, intelamt: { user: '', pass: '', tls: 0, state: 2 } }; obj.db.Set(device); // Event the new node addedDeviceCount++; var device2 = common.Clone(device); if (device2.intelamt.pass != null) delete device2.intelamt.pass; // Remove the Intel AMT password before eventing this. var change = 'APF added device ' + socket.tag.name + ' to group ' + mesh.name; obj.parent.DispatchEvent(['*', socket.tag.meshid], obj, { etype: 'node', action: 'addnode', node: device2, msg: change, domain: mesh.domain }); // Add the connection to the APF connection list obj.apfConnections[socket.tag.nodeid] = socket; // send connectivuty update type 8 for APF obj.parent.SetConnectivityState(socket.tag.meshid, socket.tag.nodeid, socket.tag.connectTime, 8, 7); // TODO: Right now report power state as "present" (7) until we can poll. SendUserAuthSuccess(socket); // Notify the auth success on the APF connection } }); return; } else { // Node is not in the database, add it. Credentials will be empty until added by the user. var device = { type: 'node', mtype: 1, _id: socket.tag.nodeid, meshid: socket.tag.meshid, name: socket.tag.name, host: null, domain: mesh.domain, intelamt: { user: '', pass: '', tls: 0, state: 2 } }; obj.db.Set(device); // Event the new node addedDeviceCount++; var device2 = common.Clone(device); if (device2.intelamt.pass != null) delete device2.intelamt.pass; // Remove the Intel AMT password before eventing this. var change = 'APF added device ' + socket.tag.name + ' to group ' + mesh.name; obj.parent.DispatchEvent(['*', socket.tag.meshid], obj, { etype: 'node', action: 'addnode', node: device2, msg: change, domain: mesh.domain }); } } else { // Node is already present var node = nodes[0]; if ((node.intelamt != null) && (node.intelamt.state == 2)) { socket.tag.host = node.intelamt.host; } } // Add the connection to the APF connection list obj.apfConnections[socket.tag.nodeid] = socket; obj.parent.SetConnectivityState(socket.tag.meshid, socket.tag.nodeid, socket.tag.connectTime, 8, 7); // TODO: Right now report power state as "present" (7) until we can poll. SendUserAuthSuccess(socket); // Notify the auth success on the APF connection }); } else if (mesh.mtype == 2) { // If this is a agent mesh, search the mesh for this device UUID // Intel AMT GUID (socket.tag.SystemId) will be used to search the node obj.db.getAmtUuidNode(mesh._id, socket.tag.SystemId, function (err, nodes) { // TODO: May need to optimize this request with indexes if ((nodes == null) || (nodes.length !== 1)) { // New APF connection for unknown node, disconnect. unknownNodeCount++; console.log('APF connection for unknown node. groupid: ' + mesh._id + ', uuid: ' + socket.tag.SystemId); socket.terminate(); return; } // Node is present var node = nodes[0]; if ((node.intelamt != null) && (node.intelamt.state == 2)) { socket.tag.host = node.intelamt.host; } socket.tag.nodeid = node._id; socket.tag.meshid = mesh._id; socket.tag.connectTime = Date.now(); // Add the connection to the APF connection list obj.apfConnections[socket.tag.nodeid] = socket; obj.parent.SetConnectivityState(socket.tag.meshid, socket.tag.nodeid, socket.tag.connectTime, 8, 7); // TODO: Right now report power state as "present" (7) until we can poll. SendUserAuthSuccess(socket); // Notify the auth success on the APF connection }); } else { // Unknown mesh type // New APF connection for unknown node, disconnect. unknownMeshIdCount++; console.log('APF connection to a unknown group type. groupid: ' + socket.tag.meshid); socket.terminate(); return; } return 18 + usernameLen + serviceNameLen + methodNameLen + passwordLen; } case APFProtocol.SERVICE_REQUEST: { if (len < 5) return 0; var xserviceNameLen = common.ReadInt(data, 1); if (len < 5 + xserviceNameLen) return 0; var xserviceName = data.substring(5, 5 + xserviceNameLen); parent.debug('apfcmd', 'SERVICE_REQUEST', xserviceName); if (xserviceName == "pfwd@amt.intel.com") { SendServiceAccept(socket, "pfwd@amt.intel.com"); } if (xserviceName == "auth@amt.intel.com") { SendServiceAccept(socket, "auth@amt.intel.com"); } return 5 + xserviceNameLen; } case APFProtocol.GLOBAL_REQUEST: { if (len < 14) return 0; var requestLen = common.ReadInt(data, 1); if (len < 14 + requestLen) return 0; var request = data.substring(5, 5 + requestLen); //var wantResponse = data.charCodeAt(5 + requestLen); if (request == "tcpip-forward") { var addrLen = common.ReadInt(data, 6 + requestLen); if (len < 14 + requestLen + addrLen) return 0; var addr = data.substring(10 + requestLen, 10 + requestLen + addrLen); var port = common.ReadInt(data, 10 + requestLen + addrLen); parent.debug('apfcmd', 'GLOBAL_REQUEST', request, addr + ':' + port); ChangeHostname(socket, addr, socket.tag.SystemId); if (socket.tag.boundPorts.indexOf(port) == -1) { socket.tag.boundPorts.push(port); } SendTcpForwardSuccessReply(socket, port); return 14 + requestLen + addrLen; } if (request == "cancel-tcpip-forward") { var addrLen = common.ReadInt(data, 6 + requestLen); if (len < 14 + requestLen + addrLen) return 0; var addr = data.substring(10 + requestLen, 10 + requestLen + addrLen); var port = common.ReadInt(data, 10 + requestLen + addrLen); parent.debug('apfcmd', 'GLOBAL_REQUEST', request, addr + ':' + port); var portindex = socket.tag.boundPorts.indexOf(port); if (portindex >= 0) { socket.tag.boundPorts.splice(portindex, 1); } SendTcpForwardCancelReply(socket); return 14 + requestLen + addrLen; } if (request == "udp-send-to@amt.intel.com") { var addrLen = common.ReadInt(data, 6 + requestLen); if (len < 26 + requestLen + addrLen) return 0; var addr = data.substring(10 + requestLen, 10 + requestLen + addrLen); var port = common.ReadInt(data, 10 + requestLen + addrLen); var oaddrLen = common.ReadInt(data, 14 + requestLen + addrLen); if (len < 26 + requestLen + addrLen + oaddrLen) return 0; var oaddr = data.substring(18 + requestLen, 18 + requestLen + addrLen); var oport = common.ReadInt(data, 18 + requestLen + addrLen + oaddrLen); var datalen = common.ReadInt(data, 22 + requestLen + addrLen + oaddrLen); if (len < 26 + requestLen + addrLen + oaddrLen + datalen) return 0; parent.debug('apfcmd', 'GLOBAL_REQUEST', request, addr + ':' + port, oaddr + ':' + oport, datalen); // TODO return 26 + requestLen + addrLen + oaddrLen + datalen; } return 6 + requestLen; } case APFProtocol.CHANNEL_OPEN: { if (len < 33) return 0; var ChannelTypeLength = common.ReadInt(data, 1); if (len < (33 + ChannelTypeLength)) return 0; // Decode channel identifiers and window size var ChannelType = data.substring(5, 5 + ChannelTypeLength); var SenderChannel = common.ReadInt(data, 5 + ChannelTypeLength); var WindowSize = common.ReadInt(data, 9 + ChannelTypeLength); // Decode the target var TargetLen = common.ReadInt(data, 17 + ChannelTypeLength); if (len < (33 + ChannelTypeLength + TargetLen)) return 0; var Target = data.substring(21 + ChannelTypeLength, 21 + ChannelTypeLength + TargetLen); var TargetPort = common.ReadInt(data, 21 + ChannelTypeLength + TargetLen); // Decode the source var SourceLen = common.ReadInt(data, 25 + ChannelTypeLength + TargetLen); if (len < (33 + ChannelTypeLength + TargetLen + SourceLen)) return 0; var Source = data.substring(29 + ChannelTypeLength + TargetLen, 29 + ChannelTypeLength + TargetLen + SourceLen); var SourcePort = common.ReadInt(data, 29 + ChannelTypeLength + TargetLen + SourceLen); channelOpenCount++; parent.debug('apfcmd', 'CHANNEL_OPEN', ChannelType, SenderChannel, WindowSize, Target + ':' + TargetPort, Source + ':' + SourcePort); // Check if we understand this channel type //if (ChannelType.toLowerCase() == "direct-tcpip") { // We don't understand this channel type, send an error back SendChannelOpenFailure(socket, SenderChannel, APFChannelOpenFailureReasonCode.UnknownChannelType); return 33 + ChannelTypeLength + TargetLen + SourceLen; } /* // This is a correct connection. Lets get it setup var MeshAmtEventEndpoint = { ServerChannel: GetNextBindId(), AmtChannel: SenderChannel, MaxWindowSize: 2048, CurrentWindowSize:2048, SendWindow: WindowSize, InfoHeader: "Target: " + Target + ":" + TargetPort + ", Source: " + Source + ":" + SourcePort}; // TODO: Connect this socket for a WSMAN event SendChannelOpenConfirmation(socket, SenderChannel, MeshAmtEventEndpoint.ServerChannel, MeshAmtEventEndpoint.MaxWindowSize); */ return 33 + ChannelTypeLength + TargetLen + SourceLen; } case APFProtocol.CHANNEL_OPEN_CONFIRMATION: { if (len < 17) return 0; var RecipientChannel = common.ReadInt(data, 1); var SenderChannel = common.ReadInt(data, 5); var WindowSize = common.ReadInt(data, 9); socket.tag.activetunnels++; var cirachannel = socket.tag.channels[RecipientChannel]; if (cirachannel == null) { /*console.log("APF Error in CHANNEL_OPEN_CONFIRMATION: Unable to find channelid " + RecipientChannel);*/ return 17; } cirachannel.amtchannelid = SenderChannel; cirachannel.sendcredits = cirachannel.amtCiraWindow = WindowSize; channelOpenConfirmCount++; parent.debug('apfcmd', 'CHANNEL_OPEN_CONFIRMATION', RecipientChannel, SenderChannel, WindowSize); if (cirachannel.closing == 1) { // Close this channel SendChannelClose(cirachannel.socket, cirachannel.amtchannelid); } else { cirachannel.state = 2; // Send any pending data if (cirachannel.sendBuffer != null) { if (cirachannel.sendBuffer.length <= cirachannel.sendcredits) { // Send the entire pending buffer SendChannelData(cirachannel.socket, cirachannel.amtchannelid, cirachannel.sendBuffer); cirachannel.sendcredits -= cirachannel.sendBuffer.length; delete cirachannel.sendBuffer; if (cirachannel.onSendOk) { cirachannel.onSendOk(cirachannel); } } else { // Send a part of the pending buffer SendChannelData(cirachannel.socket, cirachannel.amtchannelid, cirachannel.sendBuffer.substring(0, cirachannel.sendcredits)); cirachannel.sendBuffer = cirachannel.sendBuffer.substring(cirachannel.sendcredits); cirachannel.sendcredits = 0; } } // Indicate the channel is open if (cirachannel.onStateChange) { cirachannel.onStateChange(cirachannel, cirachannel.state); } } return 17; } case APFProtocol.CHANNEL_OPEN_FAILURE: { if (len < 17) return 0; var RecipientChannel = common.ReadInt(data, 1); var ReasonCode = common.ReadInt(data, 5); channelOpenFailCount++; parent.debug('apfcmd', 'CHANNEL_OPEN_FAILURE', RecipientChannel, ReasonCode); var cirachannel = socket.tag.channels[RecipientChannel]; if (cirachannel == null) { console.log("APF Error in CHANNEL_OPEN_FAILURE: Unable to find channelid " + RecipientChannel); return 17; } if (cirachannel.state > 0) { cirachannel.state = 0; if (cirachannel.onStateChange) { cirachannel.onStateChange(cirachannel, cirachannel.state); } delete socket.tag.channels[RecipientChannel]; } return 17; } case APFProtocol.CHANNEL_CLOSE: { if (len < 5) return 0; var RecipientChannel = common.ReadInt(data, 1); channelCloseCount++; parent.debug('apfcmd', 'CHANNEL_CLOSE', RecipientChannel); var cirachannel = socket.tag.channels[RecipientChannel]; if (cirachannel == null) { console.log("APF Error in CHANNEL_CLOSE: Unable to find channelid " + RecipientChannel); return 5; } socket.tag.activetunnels--; if (cirachannel.state > 0) { cirachannel.state = 0; if (cirachannel.onStateChange) { cirachannel.onStateChange(cirachannel, cirachannel.state); } delete socket.tag.channels[RecipientChannel]; } return 5; } case APFProtocol.CHANNEL_WINDOW_ADJUST: { if (len < 9) return 0; var RecipientChannel = common.ReadInt(data, 1); var ByteToAdd = common.ReadInt(data, 5); var cirachannel = socket.tag.channels[RecipientChannel]; if (cirachannel == null) { console.log("APF Error in CHANNEL_WINDOW_ADJUST: Unable to find channelid " + RecipientChannel); return 9; } cirachannel.sendcredits += ByteToAdd; parent.debug('apfcmd', 'CHANNEL_WINDOW_ADJUST', RecipientChannel, ByteToAdd, cirachannel.sendcredits); if (cirachannel.state == 2 && cirachannel.sendBuffer != null) { // Compute how much data we can send if (cirachannel.sendBuffer.length <= cirachannel.sendcredits) { // Send the entire pending buffer SendChannelData(cirachannel.socket, cirachannel.amtchannelid, cirachannel.sendBuffer); cirachannel.sendcredits -= cirachannel.sendBuffer.length; delete cirachannel.sendBuffer; if (cirachannel.onSendOk) { cirachannel.onSendOk(cirachannel); } } else { // Send a part of the pending buffer SendChannelData(cirachannel.socket, cirachannel.amtchannelid, cirachannel.sendBuffer.substring(0, cirachannel.sendcredits)); cirachannel.sendBuffer = cirachannel.sendBuffer.substring(cirachannel.sendcredits); cirachannel.sendcredits = 0; } } return 9; } case APFProtocol.CHANNEL_DATA: { if (len < 9) return 0; var RecipientChannel = common.ReadInt(data, 1); var LengthOfData = common.ReadInt(data, 5); if (len < (9 + LengthOfData)) return 0; parent.debug('apfcmddata', 'CHANNEL_DATA', RecipientChannel, LengthOfData); var cirachannel = socket.tag.channels[RecipientChannel]; if (cirachannel == null) { console.log("APF Error in CHANNEL_DATA: Unable to find channelid " + RecipientChannel); return 9 + LengthOfData; } cirachannel.amtpendingcredits += LengthOfData; if (cirachannel.onData) cirachannel.onData(cirachannel, data.substring(9, 9 + LengthOfData)); if (cirachannel.amtpendingcredits > (cirachannel.ciraWindow / 2)) { SendChannelWindowAdjust(cirachannel.socket, cirachannel.amtchannelid, cirachannel.amtpendingcredits); // Adjust the buffer window cirachannel.amtpendingcredits = 0; } return 9 + LengthOfData; } case APFProtocol.DISCONNECT: { if (len < 7) return 0; var ReasonCode = common.ReadInt(data, 1); disconnectCommandCount++; parent.debug('apfcmd', 'DISCONNECT', ReasonCode); try { delete obj.apfConnections[socket.tag.nodeid]; } catch (e) { } obj.parent.ClearConnectivityState(socket.tag.meshid, socket.tag.nodeid, 8); return 7; } default: { parent.debug('apfcmd', 'Unknown APF command: ' + cmd); return -1; } } } socket.addListener("close", function () { socketClosedCount++; parent.debug('apf', 'APF connection closed'); try { delete obj.apfConnections[socket.tag.nodeid]; } catch (e) { } obj.parent.ClearConnectivityState(socket.tag.meshid, socket.tag.nodeid, 8); }); socket.addListener("error", function (e) { socketErrorCount++; console.log("APF Error: " + e); }); } // Disconnect APF tunnel obj.close = function (socket) { try { socket.terminate(); } catch (e) { } try { delete obj.apfConnections[socket.tag.nodeid]; } catch (e) { } obj.parent.ClearConnectivityState(socket.tag.meshid, socket.tag.nodeid, 8); }; function SendServiceAccept(socket, service) { Write(socket, String.fromCharCode(APFProtocol.SERVICE_ACCEPT) + common.IntToStr(service.length) + service); } function SendTcpForwardSuccessReply(socket, port) { Write(socket, String.fromCharCode(APFProtocol.REQUEST_SUCCESS) + common.IntToStr(port)); } function SendTcpForwardCancelReply(socket) { Write(socket, String.fromCharCode(APFProtocol.REQUEST_SUCCESS)); } /* function SendKeepAliveRequest(socket, cookie) { Write(socket, String.fromCharCode(APFProtocol.KEEPALIVE_REQUEST) + common.IntToStr(cookie)); } */ function SendKeepAliveReply(socket, cookie) { Write(socket, String.fromCharCode(APFProtocol.KEEPALIVE_REPLY) + common.IntToStr(cookie)); } function SendChannelOpenFailure(socket, senderChannel, reasonCode) { Write(socket, String.fromCharCode(APFProtocol.CHANNEL_OPEN_FAILURE) + common.IntToStr(senderChannel) + common.IntToStr(reasonCode) + common.IntToStr(0) + common.IntToStr(0)); } /* function SendChannelOpenConfirmation(socket, recipientChannelId, senderChannelId, initialWindowSize) { Write(socket, String.fromCharCode(APFProtocol.CHANNEL_OPEN_CONFIRMATION) + common.IntToStr(recipientChannelId) + common.IntToStr(senderChannelId) + common.IntToStr(initialWindowSize) + common.IntToStr(-1)); } */ function SendChannelOpen(socket, direct, channelid, windowsize, target, targetport, source, sourceport) { var connectionType = ((direct == true) ? "direct-tcpip" : "forwarded-tcpip"); if ((target == null) || (target == null)) target = ''; // TODO: Reports of target being undefined that causes target.length to fail. This is a hack. Write(socket, String.fromCharCode(APFProtocol.CHANNEL_OPEN) + common.IntToStr(connectionType.length) + connectionType + common.IntToStr(channelid) + common.IntToStr(windowsize) + common.IntToStr(-1) + common.IntToStr(target.length) + target + common.IntToStr(targetport) + common.IntToStr(source.length) + source + common.IntToStr(sourceport)); } function SendChannelClose(socket, channelid) { Write(socket, String.fromCharCode(APFProtocol.CHANNEL_CLOSE) + common.IntToStr(channelid)); } function SendChannelData(socket, channelid, data) { Write(socket, String.fromCharCode(APFProtocol.CHANNEL_DATA) + common.IntToStr(channelid) + common.IntToStr(data.length) + data); } function SendChannelWindowAdjust(socket, channelid, bytestoadd) { parent.debug('apfcmd', 'SendChannelWindowAdjust', channelid, bytestoadd); Write(socket, String.fromCharCode(APFProtocol.CHANNEL_WINDOW_ADJUST) + common.IntToStr(channelid) + common.IntToStr(bytestoadd)); } /* function SendDisconnect(socket, reasonCode) { Write(socket, String.fromCharCode(APFProtocol.DISCONNECT) + common.IntToStr(reasonCode) + common.ShortToStr(0)); } */ function SendUserAuthFail(socket) { Write(socket, String.fromCharCode(APFProtocol.USERAUTH_FAILURE) + common.IntToStr(8) + 'password' + common.ShortToStr(0)); } function SendUserAuthSuccess(socket) { Write(socket, String.fromCharCode(APFProtocol.USERAUTH_SUCCESS)); } function Write(socket, data) { if (obj.args.debug) { // Print out sent bytes var buf = Buffer.from(data, "binary"); console.log('APF --> (' + buf.length + '):' + buf.toString('hex')); socket.send(buf); } else { socket.send(Buffer.from(data, "binary")); } } obj.SetupCiraChannel = function (socket, targetport) { var sourceport = (socket.tag.nextsourceport++ % 30000) + 1024; var cirachannel = { targetport: targetport, channelid: socket.tag.nextchannelid++, socket: socket, state: 1, sendcredits: 0, amtpendingcredits: 0, amtCiraWindow: 0, ciraWindow: 32768 }; SendChannelOpen(socket, false, cirachannel.channelid, cirachannel.ciraWindow, socket.tag.host, targetport, "1.2.3.4", sourceport); // This function writes data to this APF channel cirachannel.write = function (data) { if (cirachannel.state == 0) return false; if (cirachannel.state == 1 || cirachannel.sendcredits == 0 || cirachannel.sendBuffer != null) { // Channel is connected, but we are out of credits. Add the data to the outbound buffer. if (cirachannel.sendBuffer == null) { cirachannel.sendBuffer = data; } else { cirachannel.sendBuffer += data; } return true; } // Compute how much data we can send if (data.length <= cirachannel.sendcredits) { // Send the entire message SendChannelData(cirachannel.socket, cirachannel.amtchannelid, data); cirachannel.sendcredits -= data.length; return true; } // Send a part of the message cirachannel.sendBuffer = data.substring(cirachannel.sendcredits); SendChannelData(cirachannel.socket, cirachannel.amtchannelid, data.substring(0, cirachannel.sendcredits)); cirachannel.sendcredits = 0; return false; }; // This function closes this APF channel cirachannel.close = function () { if (cirachannel.state == 0 || cirachannel.closing == 1) return; if (cirachannel.state == 1) { cirachannel.closing = 1; cirachannel.state = 0; if (cirachannel.onStateChange) { cirachannel.onStateChange(cirachannel, cirachannel.state); } return; } cirachannel.state = 0; cirachannel.closing = 1; SendChannelClose(cirachannel.socket, cirachannel.amtchannelid); if (cirachannel.onStateChange) { cirachannel.onStateChange(cirachannel, cirachannel.state); } }; socket.tag.channels[cirachannel.channelid] = cirachannel; return cirachannel; }; function ChangeHostname(socket, host, systemid) { if (socket.tag.host === host) return; // Nothing to change socket.tag.host = host; // Change the device obj.db.Get(socket.tag.nodeid, function (err, nodes) { if ((nodes == null) || (nodes.length !== 1)) return; var node = nodes[0]; // See if any changes need to be made if ((node.intelamt != null) && (node.intelamt.host == host) && (node.name != null) && (node.name != '') && (node.intelamt.state == 2)) return; // Get the mesh for this device obj.db.Get(node.meshid, function (err, meshes) { if ((meshes == null) || (meshes.length !== 1)) return; var mesh = meshes[0]; // Ready the node change event var changes = ['host'], event = { etype: 'node', action: 'changenode', nodeid: node._id }; event.msg = +": "; // Make the change & save if (node.intelamt == null) node.intelamt = {}; node.intelamt.host = host; node.intelamt.state = 2; // TODO: this is not real AMT state if (((node.name == null) || (node.name == '')) && (host != null) && (host != '')) { node.name = host.split('.')[0]; } // If this system has no name, set it to the start of the domain name. if (((node.name == null) || (node.name == '')) && (systemid != null)) { node.name = systemid; } // If this system still has no name, set it to the system GUID. obj.db.Set(node); // Event the node change event.msg = 'APF changed device ' + node.name + ' from group ' + mesh.name + ': ' + changes.join(', '); var node2 = common.Clone(node); if (node2.intelamt && node2.intelamt.pass) delete node2.intelamt.pass; // Remove the Intel AMT password before eventing this. event.node = node2; if (obj.db.changeStream) { event.noact = 1; } // If DB change stream is active, don't use this event to change the node. Another event will come. obj.parent.DispatchEvent(['*', node.meshid], obj, event); }); }); } function guidToStr(g) { return g.substring(6, 8) + g.substring(4, 6) + g.substring(2, 4) + g.substring(0, 2) + "-" + g.substring(10, 12) + g.substring(8, 10) + "-" + g.substring(14, 16) + g.substring(12, 14) + "-" + g.substring(16, 20) + "-" + g.substring(20); } return obj; };