Code files

Chapter08/anticipating-malicious-input/app/index-fixed.js

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+'use strict'
+
+const express = require('express')
+const app = express()
+
+app.get('/', (req, res) => {
+  pretendDbQuery(() => {
+    var msg = req.query.msg
+
+    if (Array.isArray(msg)) msg = msg.pop()
+
+    const yelling = (msg || '').toUpperCase()
+    res.send(yelling)
+  })
+})
+
+app.listen(3000)
+
+function pretendDbQuery (cb) {
+  setTimeout(cb, 0)
+}