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libs/middleware/index.js

@@ -0,0 +1,15 @@
+const config = require('../../config')
+const crypto = require('crypto')
+
+const verifyLine = async (c, n) => {
+  if (!('request' in c) || !('raw' in c.request)) return c.throw(400, 'body not found')
+  let xSignature = c.get('x-line-signature') || ''
+  if (typeof xSignature !== 'string' || xSignature.length === 0) return c.throw(400, 'signature not found')
+  let signature = crypto.createHmac('SHA256', config.line.secret).update(c.request.raw).digest('base64')
+  if (signature !== xSignature) return c.throw(403, 'signature not match')
+  return n()
+}
+
+module.exports = {
+  verifyLine
+}