limit size of note

src/note/routes.rs

@@ -41,6 +41,9 @@ async fn create(note: web::Json<Note>) -> impl Responder {
   let mut n = note.into_inner();
   let id = generate_id();
   let bad_req = HttpResponse::BadRequest().finish();
+  if n.contents.chars().count() > 8192 {
+    return bad_req;
+  }
   if n.views == None && n.expiration == None {
     return bad_req;
   }