isolated-vm
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999cdb81ea
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3 changed files with 69 additions and 116 deletions
112
index.js
112
index.js
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@ -1,57 +1,89 @@
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const { Isolate } = require('isolated-vm')
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const { Server } = require('socket.io')
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const { Worker } = require('worker_threads')
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const path = require('path')
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const util = require('util')
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const { stylize } = require('./colors')
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const randomstring = require('randomstring')
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const ChatMessage = require('prismarine-chat')('1.20.1')
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const mc = require('minecraft-protocol')
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const moment = require('moment-timezone')
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const crypto = require('crypto')
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const nbt = require('prismarine-nbt')
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const BRIDGE_PREFIX = 'function:'
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const io = new Server(3069)
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io.on('connection', (socket) => {
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let worker
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let functions
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let isFirst = true
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let proxy
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let jsonArray
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const handler = {
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get (target, prop) {
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if (!target[prop]) throw new Error(`Function "${prop}" not available`)
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function reset () {
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worker = new Worker(path.join(__dirname, 'vm.js'))
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return (...args) => target[prop](...args)
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}
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}
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worker.on('message', (msg) => {
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switch (msg.type) {
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case 'socketEmit':
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socket.emit(...msg.data)
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socket.on('setFunctions', (jsonArray) => {
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const parsed = JSON.parse(jsonArray)
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break
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case 'socketOnce':
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socket.once(...msg.data)
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functions = {}
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break
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for (const eachFuntion of parsed) {
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functions[eachFuntion] = (...args) => {
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socket.emit(BRIDGE_PREFIX + eachFuntion, ...args)
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return new Promise((resolve) => {
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socket.once(`functionOutput:${eachFuntion}`, (message, parseJSON) => {
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if (parseJSON) resolve(JSON.parse(message))
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else resolve(message)
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})
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})
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}
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}
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proxy = new Proxy(functions, handler)
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resetVM()
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})
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const isolate = new Isolate({ memoryLimit: 256 })
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let context
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async function resetVM () {
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context = await isolate.createContext()
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// TODO: fix
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// const global = context.global
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// await global.set('this', global.derefInto())
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// await global.set('global', global.derefInto())
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// await global.set('bridge', () => { return proxy })
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// await global.set('randomstring', () => randomstring)
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// await global.set('ChatMessage', () => ChatMessage)
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// await global.set('mc', () => mc)
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// await global.set('moment', () => moment)
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// await global.set('crypto', () => crypto)
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// await global.set('nbt', () => nbt)
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}
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resetVM()
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socket.on('runCode', async (transactionId, code) => {
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try {
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const output = await context.eval(code, { timeout: 3000 })
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socket.emit('codeOutput', transactionId, false, util.inspect(output, { stylize }))
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} catch (e) {
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socket.emit('codeOutput', transactionId, true, e.toString())
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}
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})
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// ohio
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if (!isFirst) {
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worker.postMessage({ type: 'setFunctions', jsonArray })
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} else isFirst = false
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}
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reset()
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socket.on('setFunctions', (_jsonArray) => {
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jsonArray = _jsonArray
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worker.postMessage({ type: 'setFunctions', jsonArray })
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})
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socket.on('runCode', (transactionId, code) => {
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worker.postMessage({ type: 'runCode', code })
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worker.on('message', ({ type, error, output }) => {
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if (type !== 'codeOutput') return
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socket.emit('codeOutput', transactionId, error, output)
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})
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})
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socket.on('reset', reset)
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socket.on('reset', resetVM)
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})
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process.on('uncaughtException', (e) => {
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@ -10,6 +10,7 @@
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"author": "",
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"license": "ISC",
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"dependencies": {
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"isolated-vm": "^4.6.0",
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"minecraft-protocol": "^1.43.1",
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"moment": "^2.29.4",
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"moment-timezone": "^0.5.43",
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80
vm.js
80
vm.js
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@ -1,80 +0,0 @@
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const { parentPort } = require('worker_threads')
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const { VM } = require('vm2')
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const randomstring = require('randomstring')
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const ChatMessage = require('prismarine-chat')('1.20.1')
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const mc = require('minecraft-protocol')
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const moment = require('moment-timezone')
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const crypto = require('crypto')
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const nbt = require('prismarine-nbt')
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const util = require('util')
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const { stylize } = require('./colors')
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const BRIDGE_PREFIX = 'function:'
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let proxy
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let vm
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const handler = {
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get (target, prop) {
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if (!target[prop]) throw new Error(`Function "${prop}" not available`)
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return (...args) => target[prop](...args)
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}
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}
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let functions
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parentPort.on('message', (msg) => {
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switch (msg.type) {
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case 'setFunctions':
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const parsed = JSON.parse(msg.jsonArray)
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functions = {}
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for (const eachFuntion of parsed) {
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functions[eachFuntion] = (...args) => {
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parentPort.postMessage({ type: 'socketEmit', data: [BRIDGE_PREFIX + eachFuntion, ...args] })
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// how do i make thjis work
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// return new Promise((resolve) => {
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// parentPort.postMessage({ type: 'socketOnce', data: [`functionOutput:${eachFuntion}`, (message, parseJSON) => {
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// if (parseJSON) resolve(JSON.parse(message))
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// else resolve(message)
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// }]})
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// })
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}
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}
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proxy = new Proxy(functions, handler)
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vm = new VM({
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timeout: 500,
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sandbox: {
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get bridge () { return proxy },
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randomstring,
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ChatMessage,
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mc,
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moment,
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crypto,
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nbt
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}
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})
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break
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case 'runCode':
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try {
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const output = vm.run(msg.code)
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parentPort.postMessage({ type: 'codeOutput', output: util.inspect(output, { stylize }), error: false })
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} catch (e) {
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parentPort.postMessage({ type: 'codeOutput', output: e.toString(), error: true })
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}
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break
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}
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})
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process.on('uncaughtException', (e) => {
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console.log(`Caught an uncaught exception in the worker!\n${e.stack}`)
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})
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