mirror of
https://github.com/Ylianst/MeshCentral.git
synced 2024-08-15 19:50:44 +03:00
Added auto agent crash dump server upload option.
This commit is contained in:
Ylian Saint-Hilaire
parent
5e7bc1d210
commit
815fa1b0bb
@ -959,6 +959,7 @@ function createMeshCore(agent) {
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break;
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}
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case 'coredump':
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// Set the current agent coredump situation.
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if (data.value === true) {
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// TODO: This replace() below is not ideal, would be better to remove the .exe at the end instead of replace.
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process.coreDumpLocation = (process.platform == 'win32') ? (process.execPath.replace('.exe', '.dmp')) : (process.execPath + '.dmp');
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@ -967,12 +968,12 @@ function createMeshCore(agent) {
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}
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break;
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case 'getcoredump':
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// Ask the agent if a core dump is currently available, if yes, also return the hash of the agent.
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var r = { action: 'getcoredump', value: (process.coreDumpLocation != null) };
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if (process.platform == 'win32') {
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r.exists = r.value ? fs.existsSync(process.coreDumpLocation) : false;
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} else {
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r.exists = (r.value && (process.cwd() != '//')) ? fs.existsSync(process.cwd() + 'core') : false;
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}
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var coreDumpPath = null;
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if (process.platform == 'win32') { coreDumpPath = process.coreDumpLocation; } else { coreDumpPath = (process.cwd() != '//') ? fs.existsSync(process.cwd() + 'core') : null; }
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if ((coreDumpPath != null) && (fs.existsSync(coreDumpPath))) { r.exists = (db.Get('CoreDumpTime') != require('fs').statSync(coreDumpPath).mtime); }
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if (r.exists == true) { r.agenthashhex = getSHA384FileHash(process.execPath).toString('hex'); }
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mesh.SendCommand(JSON.stringify(r));
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default:
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// Unknown action, ignore it.
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@ -1913,6 +1914,17 @@ function createMeshCore(agent) {
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}
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break;
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}
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case 'markcoredump': {
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// If we are asking for the coredump file, set the right path.
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var coreDumpPath = null;
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if (process.platform == 'win32') {
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if (fs.existsSync(process.coreDumpLocation)) { coreDumpPath = process.coreDumpLocation; }
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} else {
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if ((process.cwd() != '//') && fs.existsSync(process.cwd() + 'core')) { coreDumpPath = process.cwd() + 'core'; }
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}
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if (coreDumpPath != null) { db.Put('CoreDumpTime', require('fs').statSync(coreDumpPath).mtime); }
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break;
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}
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case 'rename': {
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// Rename a file or folder
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var oldfullpath = obj.path.join(cmd.path, cmd.oldname);
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@ -1925,13 +1937,20 @@ function createMeshCore(agent) {
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// Download a file
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var sendNextBlock = 0;
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if (cmd.sub == 'start') { // Setup the download
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if ((cmd.path == null) && (cmd.ask == 'coredump')) { // If we are asking for the coredump file, set the right path.
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if (process.platform == 'win32') {
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if (fs.existsSync(process.coreDumpLocation)) { cmd.path = process.coreDumpLocation; }
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} else {
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if ((process.cwd() != '//') && fs.existsSync(process.cwd() + 'core')) { cmd.path = process.cwd() + 'core'; }
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}
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}
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MeshServerLog('Download: \"' + cmd.path + '\"', this.httprequest);
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if (this.filedownload != null) { this.write({ action: 'download', sub: 'cancel', id: this.filedownload.id }); delete this.filedownload; }
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if ((cmd.path == null) || (this.filedownload != null)) { this.write({ action: 'download', sub: 'cancel', id: this.filedownload.id }); delete this.filedownload; }
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this.filedownload = { id: cmd.id, path: cmd.path, ptr: 0 }
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try { this.filedownload.f = fs.openSync(this.filedownload.path, 'rbN'); } catch (e) { this.write({ action: 'download', sub: 'cancel', id: this.filedownload.id }); delete this.filedownload; }
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if (this.filedownload) { this.write({ action: 'download', sub: 'start', id: cmd.id }); }
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} else if ((this.filedownload != null) && (cmd.id == this.filedownload.id)) { // Download commands
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if (cmd.sub == 'startack') { sendNextBlock = 8; } else if (cmd.sub == 'stop') { delete this.filedownload; } else if (cmd.sub == 'ack') { sendNextBlock = 1; }
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if (cmd.sub == 'startack') { sendNextBlock = ((typeof cmd.ack == 'number') ? cmd.ack : 8); } else if (cmd.sub == 'stop') { delete this.filedownload; } else if (cmd.sub == 'ack') { sendNextBlock = 1; }
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}
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// Send the next download block(s)
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while (sendNextBlock > 0) {
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@ -2278,7 +2297,7 @@ function createMeshCore(agent) {
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}
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case 'coredump':
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if (args['_'].length != 1) {
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response = "Proper usage: coredump on|off|status"; // Display usage
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response = "Proper usage: coredump on|off|status|clear"; // Display usage
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} else {
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switch (args['_'][0].toLowerCase())
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{
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@ -2300,6 +2319,10 @@ function createMeshCore(agent) {
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}
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}
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break;
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case 'clear':
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db.Put('CoreDumpTime', null);
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response = 'coredump db cleared';
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break;
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default:
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response = "Proper usage: coredump on|off|status"; // Display usage
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break;
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@ -1375,6 +1375,7 @@ module.exports.CreateMeshAgent = function (parent, db, ws, req, args, domain) {
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//console.log('CoreDump for agent ' + obj.remoteaddrport);
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obj.coreDumpPresent = true;
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// TODO: We need to look at getting the dump uploaded to the server.
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if (typeof command.agenthashhex == 'string') { obj.RequestCoreDump(command.agenthashhex); }
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}
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break;
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}
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@ -1555,6 +1556,13 @@ module.exports.CreateMeshAgent = function (parent, db, ws, req, args, domain) {
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});
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}
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// Request that the core dump file on this agent be uploaded to the server
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obj.RequestCoreDump = function (agenthashhex) {
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if (agenthashhex.length > 16) { agenthashhex = agenthashhex.substring(0, 16); }
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const cookie = parent.parent.encodeCookie({ a: 'aft', b: 'coredump', c: obj.agentInfo.agentId + '-' + agenthashhex + '-' + obj.nodeid + '.dmp' }, parent.parent.loginCookieEncryptionKey);
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obj.send('{"action":"msg","type":"tunnel","value":"*/' + (((domain.dns == null) && (domain.id != '')) ? (domain.id + '/') : '') + 'agenttransfer.ashx?c=' + cookie + '","rights":"4294967295"}');
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}
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// Generate a random Intel AMT password
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function checkAmtPassword(p) { return (p.length > 7) && (/\d/.test(p)) && (/[a-z]/.test(p)) && (/[A-Z]/.test(p)) && (/\W/.test(p)); }
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function getRandomAmtPassword() { var p; do { p = Buffer.from(parent.crypto.randomBytes(9), 'binary').toString('base64').split('/').join('@'); } while (checkAmtPassword(p) == false); return p; }
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96
webserver.js
96
webserver.js
@ -2998,9 +2998,9 @@ module.exports.CreateWebServer = function (parent, db, args, certificates) {
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// See if we need to create the folder
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var domainx = 'domain';
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if (domain.id.length > 0) { domainx = 'domain-' + usersplit[1]; }
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try { obj.fs.mkdirSync(obj.parent.filespath); } catch (e) { }
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try { obj.fs.mkdirSync(obj.parent.path.join(obj.parent.filespath, domainx)); } catch (e) { }
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try { obj.fs.mkdirSync(xfile.fullpath); } catch (e) { }
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try { obj.fs.mkdirSync(obj.parent.filespath); } catch (ex) { }
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try { obj.fs.mkdirSync(obj.parent.path.join(obj.parent.filespath, domainx)); } catch (ex) { }
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try { obj.fs.mkdirSync(xfile.fullpath); } catch (ex) { }
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// Upload method where all the file data is within the fields.
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var names = fields.name[0].split('*'), sizes = fields.size[0].split('*'), types = fields.type[0].split('*'), datas = fields.data[0].split('*');
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@ -3423,7 +3423,7 @@ module.exports.CreateWebServer = function (parent, db, args, certificates) {
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}
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});
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}
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}
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// Handle a Intel AMT activation request
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function handleAmtActivateWebSocket(ws, req) {
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@ -3614,6 +3614,90 @@ module.exports.CreateWebServer = function (parent, db, args, certificates) {
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ws.on('close', function (req) { });
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}
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// Setup agent to/from server file transfer handler
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function handleAgentFileTransfer(ws, req) {
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var domain = checkAgentIpAddress(ws, req);
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if (domain == null) { parent.debug('web', 'Got agent file transfer connection with bad domain or blocked IP address ' + req.clientIp + ', dropping.'); ws.close(); return; }
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if (req.query.c == null) { parent.debug('web', 'Got agent file transfer connection without a cookie from ' + req.clientIp + ', dropping.'); ws.close(); return; }
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var c = obj.parent.decodeCookie(req.query.c, obj.parent.loginCookieEncryptionKey, 10); // 10 minute timeout
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if ((c == null) || (c.a != 'aft')) { parent.debug('web', 'Got agent file transfer connection with invalid cookie from ' + req.clientIp + ', dropping.'); ws.close(); return; }
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ws.xcmd = c.b; ws.xarg = c.c, ws.xfilelen = 0;
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ws.send('c'); // Indicate connection of the tunnel. In this case, we are the termination point.
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ws.send('5'); // Indicate we want to perform file transfers (5 = Files).
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if (ws.xcmd == 'coredump') {
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// Check the agent core dump folder if not already present.
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var coreDumpPath = obj.path.join(parent.datapath, 'coredumps');
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if (obj.fs.existsSync(coreDumpPath) == false) { try { obj.fs.mkdirSync(coreDumpPath); } catch (ex) { } }
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ws.xfilepath = obj.path.join(parent.datapath, 'coredumps', ws.xarg);
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ws.xid = 'coredump';
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ws.send(JSON.stringify({ action: 'download', sub: 'start', ask: 'coredump', id: 'coredump' })); // Ask for a directory (test)
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}
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// When data is received from the web socket, echo it back
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ws.on('message', function (data) {
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if (typeof data == 'string') {
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// Control message
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var cmd = null;
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try { cmd = JSON.parse(data); } catch (ex) { }
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if ((cmd == null) || (cmd.action != 'download') || (cmd.sub == null)) return;
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switch (cmd.sub) {
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case 'start': {
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// Perform an async file open
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var callback = function onFileOpen(err, fd) {
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onFileOpen.xws.xfile = fd;
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onFileOpen.xws.send(JSON.stringify({ action: 'download', sub: 'startack', id: onFileOpen.xws.xid, ack: 1 })); // Ask for a directory (test)
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};
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callback.xws = this;
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obj.fs.open(this.xfilepath, 'w', callback)
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break;
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}
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}
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} else {
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// Binary message
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if (data.length < 4) return;
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var flags = data.readInt32BE(0);
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if ((data.length > 4)) {
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// Write the file
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this.xfilelen += (data.length - 4);
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try {
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var callback = function onFileDataWritten(err, bytesWritten, buffer) {
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if (onFileDataWritten.xflags & 1) {
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// End of file
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parent.debug('web', "Completed downloads of agent dumpfile, " + onFileDataWritten.xws.xfilelen + " bytes.");
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if (onFileDataWritten.xws.xfile) { try { obj.fs.close(onFileDataWritten.xws.xfile, function (err) { }); } catch (ex) { } }
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onFileDataWritten.xws.send(JSON.stringify({ action: 'markcoredump' })); // Ask to delete the core dump file
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try { onFileDataWritten.xws.close(); } catch (ex) { }
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} else {
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// Send ack
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onFileDataWritten.xws.send(JSON.stringify({ action: 'download', sub: 'ack', id: onFileDataWritten.xws.xid })); // Ask for a directory (test)
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}
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};
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callback.xws = this;
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callback.xflags = flags;
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obj.fs.write(this.xfile, data, 4, data.length - 4, callback);
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} catch (ex) { }
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} else {
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if (flags & 1) {
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// End of file
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parent.debug('web', "Completed downloads of agent dumpfile, " + this.xfilelen + " bytes.");
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if (this.xfile) { try { obj.fs.close(this.xfile, function (err) { }); } catch (ex) { } }
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this.send(JSON.stringify({ action: 'markcoredump' })); // Ask to delete the core dump file
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try { this.close(); } catch (ex) { }
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} else {
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// Send ack
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this.send(JSON.stringify({ action: 'download', sub: 'ack', id: this.xid })); // Ask for a directory (test)
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}
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}
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}
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});
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// If error, do nothing.
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ws.on('error', function (err) { console.log('Agent file transfer server error from ' + req.clientIp + ', ' + err.toString().split('\r')[0] + '.'); });
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// If closed, do nothing
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ws.on('close', function (req) { });
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}
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// Handle the web socket echo request, just echo back the data sent
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function handleEchoWebSocket(ws, req) {
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const domain = checkUserIpAddress(ws, req);
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@ -4428,6 +4512,7 @@ module.exports.CreateWebServer = function (parent, db, args, certificates) {
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obj.app.get(url + 'player.htm', handlePlayerRequest);
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obj.app.get(url + 'player', handlePlayerRequest);
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obj.app.ws(url + 'amtactivate', handleAmtActivateWebSocket);
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obj.app.ws(url + 'agenttransfer.ashx', handleAgentFileTransfer); // Setup agent to/from server file transfer handler
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obj.app.ws(url + 'meshrelay.ashx', function (ws, req) {
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PerformWSSessionAuth(ws, req, true, function (ws1, req1, domain, user, cookie) {
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if (((parent.config.settings.desktopmultiplex === true) || (domain.desktopmultiplex === true)) && (req.query.p == 2)) {
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@ -4830,6 +4915,9 @@ module.exports.CreateWebServer = function (parent, db, args, certificates) {
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}
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});
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});
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// Setup agent to/from server file transfer handler
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obj.agentapp.ws(url + 'agenttransfer.ashx', handleAgentFileTransfer); // Setup agent to/from server file transfer handler
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}
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// Memory Tracking
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