mirror of
https://github.com/Ylianst/MeshCentral.git
synced 2024-11-24 15:43:00 +03:00
334 lines
16 KiB
JavaScript
334 lines
16 KiB
JavaScript
/**
|
|
* @description MeshCentral MeshAgent
|
|
* @author Ylian Saint-Hilaire
|
|
* @copyright Intel Corporation 2019-2021
|
|
* @license Apache-2.0
|
|
* @version v0.0.1
|
|
*/
|
|
|
|
var fs = require('fs');
|
|
var path = require('path');
|
|
|
|
var worker = null;
|
|
const NodeJSVer = Number(process.version.match(/^v(\d+\.\d+)/)[1]);
|
|
var directRun = (require.main === module);
|
|
function log() { if (directRun) { console.log(...arguments); } /*else { if (worker != null) { worker.parentPort.postMessage({ msg: arguments[0] }); } } */ }
|
|
if (directRun && (NodeJSVer >= 12)) { const xworker = require('worker_threads'); try { if (xworker.isMainThread == false) { worker = xworker; } } catch (ex) { log(ex); } }
|
|
function start() { startEx(process.argv); }
|
|
if (directRun) { setup(); }
|
|
|
|
function setup() { InstallModules(['image-size'], start); }
|
|
function start() { startEx(process.argv); }
|
|
function startEx(argv) {
|
|
if (argv.length > 2) { indexFile(argv[2]); } else {
|
|
log("MeshCentral Session Recodings Processor");
|
|
log("This tool will index a .mcrec file so that the player can seek thru the file.");
|
|
log("");
|
|
log(" Usage: node mcrec [file]");
|
|
}
|
|
}
|
|
|
|
function indexFile(infile) {
|
|
var state = { recFileName: null, recFile: null, recFileSize: 0, recFilePtr: 0 };
|
|
if (fs.existsSync(infile) == false) { log("Missing file: " + infile); return; }
|
|
state.recFileName = infile;
|
|
state.recFileSize = fs.statSync(infile).size;
|
|
if (state.recFileSize < 32) { log("Invalid file: " + infile); return; }
|
|
log("Processing file: " + infile + ", " + state.recFileSize + " bytes.");
|
|
state.recFile = fs.openSync(infile, 'r+');
|
|
state.indexTime = 10; // Interval between indexes in seconds
|
|
state.lastIndex = 0; // Last time an index was writen in seconds
|
|
state.indexes = [];
|
|
state.width = 0;
|
|
state.height = 0;
|
|
state.basePtr = null;
|
|
readLastBlock(state, function (state, result, time, extras) {
|
|
if (result == false) { log("Invalid file: " + infile); return; }
|
|
if (extras != null) { log("File already indexed: " + infile); return; }
|
|
state.lastTimeStamp = time;
|
|
readNextBlock(state, processBlock);
|
|
});
|
|
}
|
|
|
|
function createIndex(state, ptr) {
|
|
var index = [];
|
|
for (var i in state.screen) { if (index.indexOf(state.screen[i]) == -1) { index.push(state.screen[i]); } }
|
|
index.sort(function (a, b) { return a - b });
|
|
index.unshift(state.height);
|
|
index.unshift(state.width);
|
|
index.unshift(ptr - state.basePtr);
|
|
state.indexes.push(index); // Index = [ Ptr, Width, Height, Block Pointers... ]
|
|
//log('Index', state.lastIndex, index.length);
|
|
//log('Index', index);
|
|
state.lastIndex += 10;
|
|
}
|
|
|
|
function processBlock(state, block, err) {
|
|
if (err != null) {
|
|
// Error reading the next block, exit now.
|
|
fs.close(state.recFile, function () {
|
|
for (var i in state) { delete state[i]; } // Clear the state.
|
|
log("Error.");
|
|
});
|
|
return;
|
|
}
|
|
if (block == null) {
|
|
// We are done, close this file.
|
|
writeIndex(state, function () {
|
|
fs.close(state.recFile, function () {
|
|
for (var i in state) { delete state[i]; } // Clear the state.
|
|
log("Done.");
|
|
});
|
|
});
|
|
return;
|
|
}
|
|
var elapseMilliSeconds = 0;
|
|
if (state.startTime != null) { elapseMilliSeconds = (block.time - state.startTime); }
|
|
var flagBinary = (block.flags & 1) != 0;
|
|
var flagUser = (block.flags & 2) != 0;
|
|
|
|
// Start indexing at the first type 2 block
|
|
if ((state.basePtr == null) && (block.type == 2)) { state.basePtr = block.ptr; state.startTime = block.time; }
|
|
|
|
// Check if we need to create one or more indexes
|
|
while (((state.lastIndex + state.indexTime) * 1000) < elapseMilliSeconds) { createIndex(state, block.ptr); }
|
|
|
|
if (block.type == 1) {
|
|
// Metadata
|
|
state.metadata = JSON.parse(block.data.toString());
|
|
if (state.metadata.indexInterval != null) { log("This file is already indexed."); return; }
|
|
if (state.metadata.protocol != 2) { log("Only remote desktop sessions can currently be indexed."); return; }
|
|
state.metadataFlags = block.flags;
|
|
state.metadataTime = block.time;
|
|
state.recFileProtocol = state.metadata.protocol;
|
|
state.dataStartPtr = state.recFilePtr;
|
|
if (typeof state.recFileProtocol == 'string') { state.recFileProtocol = parseInt(state.recFileProtocol); }
|
|
} else if ((block.type == 2) && flagBinary && !flagUser) {
|
|
// Device --> User data
|
|
if (state.recFileProtocol == 1) {
|
|
// MeshCentral Terminal
|
|
// TODO
|
|
log('Terminal');
|
|
} else if (state.recFileProtocol == 2) {
|
|
// MeshCentral Remote Desktop
|
|
// TODO
|
|
if (block.data.length >= 4) {
|
|
var command = block.data.readUInt16BE(0);
|
|
var cmdsize = block.data.readUInt16BE(2);
|
|
if ((command == 27) && (cmdsize == 8)) {
|
|
// Jumbo packet
|
|
if (block.data.length >= 12) {
|
|
command = block.data.readUInt16BE(8);
|
|
cmdsize = block.data.readUInt32BE(4);
|
|
if (block.data.length == (cmdsize + 8)) {
|
|
block.data = block.data.slice(8, block.data.length);
|
|
} else {
|
|
console.log('TODO-PARTIAL-JUMBO', command, cmdsize, block.data.length);
|
|
return; // TODO
|
|
}
|
|
}
|
|
}
|
|
|
|
switch (command) {
|
|
case 3: // Tile
|
|
var x = block.data.readUInt16BE(4);
|
|
var y = block.data.readUInt16BE(6);
|
|
var dimensions = require('image-size')(block.data.slice(8));
|
|
//log("Tile", x, y, dimensions.width, dimensions.height, block.ptr);
|
|
//console.log(elapseSeconds);
|
|
|
|
// Update the screen with the correct pointers.
|
|
var sx = x/16, sy = y/16, sw = dimensions.width/16, sh = dimensions.height/16;
|
|
for (var i = 0; i < sw; i++) {
|
|
for (var j = 0; j < sh; j++) {
|
|
var k = ((state.swidth * (j + sy)) + (i + sx));
|
|
state.screen[k] = (block.ptr - state.basePtr);
|
|
}
|
|
}
|
|
|
|
break;
|
|
case 4: // Tile copy
|
|
var x = block.data.readUInt16BE(4);
|
|
var y = block.data.readUInt16BE(6);
|
|
//log("TileCopy", x, y);
|
|
break;
|
|
case 7: // Screen Size, clear the screen state and computer the tile count
|
|
state.width = block.data.readUInt16BE(4);
|
|
state.height = block.data.readUInt16BE(6);
|
|
state.swidth = state.width / 16;
|
|
state.sheight = state.height / 16;
|
|
if (Math.floor(state.swidth) != state.swidth) { state.swidth = Math.floor(state.swidth) + 1; }
|
|
if (Math.floor(state.sheight) != state.sheight) { state.sheight = Math.floor(state.sheight) + 1; }
|
|
state.screen = {};
|
|
//log("ScreenSize", state.width, state.height, state.swidth, state.sheight, state.swidth * state.sheight);
|
|
break;
|
|
}
|
|
|
|
//log('Desktop', command, cmdsize);
|
|
}
|
|
} else if (state.recFileProtocol == 101) {
|
|
// Intel AMT KVM
|
|
// TODO
|
|
log('AMTKVM');
|
|
}
|
|
} else if ((block.type == 2) && flagBinary && flagUser) {
|
|
// User --> Device data
|
|
if (state.recFileProtocol == 101) {
|
|
// Intel AMT KVM
|
|
//if (rstr2hex(data) == '0000000008080001000700070003050200000000') { amtDesktop.bpp = 1; } // Switch to 1 byte per pixel.
|
|
}
|
|
}
|
|
|
|
//console.log(block);
|
|
readNextBlock(state, processBlock);
|
|
}
|
|
|
|
function writeIndex(state, func) {
|
|
// Add the new indexes in extra metadata at the end of the file.
|
|
var extraMetadata = {};
|
|
extraMetadata.indexInterval = state.indexTime;
|
|
extraMetadata.indexStartTime = state.startTime;
|
|
extraMetadata.indexes = state.indexes;
|
|
recordingEntry(state.recFile, 4, 0, state.lastTimeStamp, JSON.stringify(extraMetadata), function (state, len) {
|
|
recordingEntry(state.recFile, 3, 0, state.recFileSize - 32, 'MeshCentralMCNDX', function (state) {
|
|
func(state);
|
|
}, state, state.recFileSize - 32 + len);
|
|
}, state, state.recFileSize - 32);
|
|
}
|
|
|
|
// Record a new entry in a recording log
|
|
function recordingEntry(fd, type, flags, time, data, func, tag, position) {
|
|
try {
|
|
if (typeof data == 'string') {
|
|
// String write
|
|
var blockData = Buffer.from(data), header = Buffer.alloc(16); // Header: Type (2) + Flags (2) + Size(4) + Time(8)
|
|
header.writeInt16BE(type, 0); // Type (1 = Header, 2 = Network Data, 3 = End, 4 = Extra Metadata)
|
|
header.writeInt16BE(flags, 2); // Flags (1 = Binary, 2 = User)
|
|
header.writeInt32BE(blockData.length, 4); // Size
|
|
header.writeIntBE(time, 10, 6); // Time
|
|
var block = Buffer.concat([header, blockData]);
|
|
if (typeof position == 'number') {
|
|
fs.write(fd, block, 0, block.length, position, function () { func(tag, block.length); });
|
|
} else {
|
|
fs.write(fd, block, 0, block.length, function () { func(tag, block.length); });
|
|
}
|
|
} else {
|
|
// Binary write
|
|
var header = Buffer.alloc(16); // Header: Type (2) + Flags (2) + Size(4) + Time(8)
|
|
header.writeInt16BE(type, 0); // Type (1 = Header, 2 = Network Data, 3 = End, 4 = Extra Metadata)
|
|
header.writeInt16BE(flags | 1, 2); // Flags (1 = Binary, 2 = User)
|
|
header.writeInt32BE(data.length, 4); // Size
|
|
header.writeIntBE(time, 10, 6); // Time
|
|
var block = Buffer.concat([header, data]);
|
|
if (typeof position == 'number') {
|
|
fs.write(fd, block, 0, block.length, position, function () { func(tag, block.length); });
|
|
} else {
|
|
fs.write(fd, block, 0, block.length, function () { func(tag, block.length); });
|
|
}
|
|
}
|
|
} catch (ex) { console.log(ex); func(tag); }
|
|
}
|
|
|
|
function readLastBlock(state, func) {
|
|
var buf = Buffer.alloc(32);
|
|
fs.read(state.recFile, buf, 0, 32, state.recFileSize - 32, function (err, bytesRead, buf) {
|
|
var type = buf.readUInt16BE(0); // Type (1 = Header, 2 = Network Data)
|
|
var flags = buf.readUInt16BE(2); // Flags (1 = Binary, 2 = User)
|
|
var size = buf.readUInt32BE(4); // Size
|
|
var time = buf.readUIntBE(10, 6); // Time
|
|
var magic = buf.toString('utf8', 16, 32);
|
|
if ((type == 3) && (size == 16) && (magic == 'MeshCentralMCNDX')) {
|
|
// Extra metadata present, lets read it.
|
|
extraMetadata = null;
|
|
var buf2 = Buffer.alloc(16);
|
|
fs.read(state.recFile, buf2, 0, 16, time, function (err, bytesRead, buf2) {
|
|
var xtype = buf2.readUInt16BE(0); // Type (1 = Header, 2 = Network Data, 3 = End, 4 = Extra Metadata)
|
|
var xflags = buf2.readUInt16BE(2); // Flags (1 = Binary, 2 = User)
|
|
var xsize = buf2.readUInt32BE(4); // Size
|
|
var xtime = buf.readUIntBE(10, 6); // Time
|
|
var buf3 = Buffer.alloc(xsize);
|
|
fs.read(state.recFile, buf3, 0, xsize, time + 16, function (err, bytesRead, buf3) {
|
|
func(state, true, xtime, JSON.parse(buf3.toString()));
|
|
});
|
|
});
|
|
} else {
|
|
// No extra metadata or fail
|
|
func(state, (type == 3) && (size == 16) && (magic == 'MeshCentralMCREC'), time, null);
|
|
}
|
|
});
|
|
}
|
|
|
|
function readNextBlock(state, func) {
|
|
if ((state.recFilePtr + 16) > state.recFileSize) { func(state, null); return; }
|
|
var r = {}, buf = Buffer.alloc(16);
|
|
fs.read(state.recFile, buf, 0, 16, state.recFilePtr, function (err, bytesRead, buf) {
|
|
if (bytesRead != 16) { func(state, null, true); return; } // Error
|
|
try {
|
|
r.type = buf.readUInt16BE(0); // Type (1 = Header, 2 = Network Data, 3 = End, 4 = Extra Metadata)
|
|
r.flags = buf.readUInt16BE(2); // Flags (1 = Binary, 2 = User)
|
|
r.size = buf.readUInt32BE(4); // Size
|
|
r.time = buf.readUIntBE(10, 6); // Time
|
|
r.date = new Date(r.time);
|
|
r.ptr = state.recFilePtr;
|
|
if ((state.recFilePtr + 16 + r.size) > state.recFileSize) { func(state, null, true); return; } // Error
|
|
if (r.size == 0) {
|
|
r.data = null;
|
|
func(state, r);
|
|
} else {
|
|
r.data = Buffer.alloc(r.size);
|
|
fs.read(state.recFile, r.data, 0, r.size, state.recFilePtr + 16, function (err, bytesRead, buf) {
|
|
state.recFilePtr += (16 + r.size);
|
|
func(state, r);
|
|
});
|
|
}
|
|
} catch (ex) { func(state, null, true); return; } // Error
|
|
});
|
|
}
|
|
|
|
function isNumber(x) { return (('' + parseInt(x)) === x) || (('' + parseFloat(x)) === x); }
|
|
function format(format) { var args = Array.prototype.slice.call(arguments, 1); return format.replace(/{(\d+)}/g, function (match, number) { return typeof args[number] != 'undefined' ? args[number] : match; }); };
|
|
|
|
// Check if a list of modules are present and install any missing ones
|
|
var InstallModuleChildProcess = null;
|
|
var previouslyInstalledModules = {};
|
|
function InstallModules(modules, func) {
|
|
var missingModules = [];
|
|
if (previouslyInstalledModules == null) { previouslyInstalledModules = {}; }
|
|
if (modules.length > 0) {
|
|
for (var i in modules) {
|
|
try {
|
|
var xxmodule = require(modules[i]);
|
|
} catch (e) {
|
|
if (previouslyInstalledModules[modules[i]] !== true) { missingModules.push(modules[i]); }
|
|
}
|
|
}
|
|
if (missingModules.length > 0) { InstallModule(missingModules.shift(), InstallModules, modules, func); } else { func(); }
|
|
}
|
|
}
|
|
|
|
// Check if a module is present and install it if missing
|
|
function InstallModule(modulename, func, tag1, tag2) {
|
|
log('Installing ' + modulename + '...');
|
|
var child_process = require('child_process');
|
|
var parentpath = __dirname;
|
|
|
|
// Get the working directory
|
|
if ((__dirname.endsWith('/node_modules/meshcentral')) || (__dirname.endsWith('\\node_modules\\meshcentral')) || (__dirname.endsWith('/node_modules/meshcentral/')) || (__dirname.endsWith('\\node_modules\\meshcentral\\'))) { parentpath = require('path').join(__dirname, '../..'); }
|
|
|
|
// Looks like we need to keep a global reference to the child process object for this to work correctly.
|
|
InstallModuleChildProcess = child_process.exec('npm install --no-optional --save ' + modulename, { maxBuffer: 512000, timeout: 120000, cwd: parentpath }, function (error, stdout, stderr) {
|
|
InstallModuleChildProcess = null;
|
|
if ((error != null) && (error != '')) {
|
|
log('ERROR: Unable to install required module "' + modulename + '". May not have access to npm, or npm may not have suffisent rights to load the new module. Try "npm install ' + modulename + '" to manualy install this module.\r\n');
|
|
process.exit();
|
|
return;
|
|
}
|
|
previouslyInstalledModules[modulename] = true;
|
|
func(tag1, tag2);
|
|
return;
|
|
});
|
|
}
|
|
|
|
// Export table
|
|
module.exports.startEx = startEx;
|
|
module.exports.indexFile = indexFile; |