feat: api.verifyAndReceive({id, name, payload, signature})

Author: gr2m

index.js

@@ -4,6 +4,7 @@ const createEventHandler = require('./event-handler')
 const middleware = require('./middleware/middleware')
 const sign = require('./sign')
 const verify = require('./verify')
+const verifyAndReceive = require('./middleware/verify-and-receive')
 
 function createWebhooksApi (options) {
   if (!options || !options.secret) {
@@ -16,14 +17,13 @@ function createWebhooksApi (options) {
     secret: options.secret
   }
 
-  const webhooksMiddleware = middleware.bind(null, state)
-
   return {
     sign: sign.bind(null, options.secret),
     verify: verify.bind(null, options.secret),
     on: state.eventHandler.on,
     removeListener: state.eventHandler.removeListener,
     receive: state.eventHandler.receive,
-    middleware: webhooksMiddleware
+    middleware: middleware.bind(null, state),
+    verifyAndReceive: verifyAndReceive.bind(null, state)
   }
 }

middleware/verify-and-receive.js

@@ -0,0 +1,22 @@
+module.exports = verifyAndReceive
+
+const verify = require('../verify')
+
+function verifyAndReceive (state, event) {
+  const matchesSignature = verify(state.secret, event.payload, event.signature)
+
+  if (!matchesSignature) {
+    const error = new Error('signature does not match event payload and secret')
+
+    error.event = event
+    error.status = 400
+
+    return state.eventHandler.receive(error)
+  }
+
+  return state.eventHandler.receive({
+    id: event.id,
+    name: event.name,
+    payload: event.payload
+  })
+}