[fix] 3 detail bugs

Author: github-actions[bot]

pages/api/signature/[...slug].ts

@@ -1,10 +1,12 @@
 import { createKoaRouter, withKoaRouter } from 'next-ssr-middleware';
 
+import { safeAPI } from '../core';
+
 export const config = { api: { bodyParser: false } };
 
 const router = createKoaRouter(import.meta.url);
 
-router.post('/verification', async context => {
+router.post('/verification', safeAPI, async context => {
   const { algorithm, publicKey, value, signature } = Reflect.get(context.request, 'body');
 
   const rawAlgorithm = JSON.parse(atob(algorithm)),

pages/signature.tsx

@@ -24,7 +24,7 @@ export default class SignaturePage extends ObservedComponent<RouteProps, typeof
     const { route } = this.observedProps;
     const { valueName, algorithmName, publicKeyName, signatureName, value } = route.query,
       { algorithm, publicKey } = this.signatureStore;
-    const signature = this.signatureStore.signatureMap[value + ''] || {};
+    const signature = this.signatureStore.signatureMap[value + ''];
 
     return buildURLData({
       [valueName + '']: value,
@@ -53,7 +53,11 @@ export default class SignaturePage extends ObservedComponent<RouteProps, typeof
 
         <h1 className="my-5 text-truncate">{title}</h1>
 
-        <iframe className="border-0 w-100 vh-100" src={`${iframeLink}?${this.linkData}`} />
+        <iframe
+          className="border-0 w-100 vh-100"
+          sandbox="allow-scripts allow-same-origin allow-forms"
+          src={`${iframeLink}?${this.linkData}`}
+        />
       </Container>
     );
   }