91 lines
2.6 KiB
JavaScript
91 lines
2.6 KiB
JavaScript
const { Isolate } = require('isolated-vm')
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const { Server } = require('socket.io')
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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 functions
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let proxy
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const handler = {
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get (target, prop) {
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if (!target[prop]) throw new Error(`Function "${prop}" not available`)
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return (...args) => target[prop](...args)
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}
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}
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socket.on('setFunctions', (jsonArray) => {
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const parsed = JSON.parse(jsonArray)
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functions = {}
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for (const eachFuntion of parsed) {
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functions[eachFuntion] = (...args) => {
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socket.emit(BRIDGE_PREFIX + eachFuntion, ...args)
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return new Promise((resolve) => {
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socket.once(`functionOutput:${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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socket.on('reset', resetVM)
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})
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process.on('uncaughtException', (e) => {
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console.log(`Caught an uncaught exception!\n${e.stack}`)
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})
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