secure webui: require token auth on /webui page

pkg/nodes/registry_server.go

@@ -120,6 +120,10 @@ func (s *RegistryServer) handleWebUI(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, "method not allowed", http.StatusMethodNotAllowed)
 		return
 	}
+	if !s.checkAuth(r) {
+		http.Error(w, "unauthorized", http.StatusUnauthorized)
+		return
+	}
 	w.Header().Set("Content-Type", "text/html; charset=utf-8")
 	_, _ = w.Write([]byte(webUIHTML))
 }