From 487832e662ada98f00df9067a180b0a4c8b83df3 Mon Sep 17 00:00:00 2001
From: NagyZoltanPeter <113987313+NagyZoltanPeter@users.noreply.github.com>
Date: Tue, 7 Apr 2026 14:24:51 +0200
Subject: [PATCH] Add pre-check of options used in config Json for
 logos-delivery-api pre-createNode, treat unrecognized options as error

---
 liblogosdelivery/logos_delivery_api/node_api.nim | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/liblogosdelivery/logos_delivery_api/node_api.nim b/liblogosdelivery/logos_delivery_api/node_api.nim
index cd644abd7..3555b096d 100644
--- a/liblogosdelivery/logos_delivery_api/node_api.nim
+++ b/liblogosdelivery/logos_delivery_api/node_api.nim
@@ -1,4 +1,4 @@
-import std/[json, strutils]
+import std/[json, strutils, sets]
 import chronos, chronicles, results, confutils, confutils/std/net, ffi
 import
   waku/factory/waku,
@@ -28,6 +28,16 @@ registerReqFFI(CreateNodeRequest, ctx: ptr FFIContext[Waku]):
           " configJson string: " & $configJson
       )
 
+    # Collect known fields
+    var knownFields = initHashSet[string]()
+    for confField, _ in fieldPairs(conf):
+      knownFields.incl(confField)
+    # Check for unknown keys
+    for key in jsonNode.keys:
+      if key notin knownFields:
+        error "Invalid configuration option found.", option = key
+        return err("Invalid configuration option found: " & key)
+
     for confField, confValue in fieldPairs(conf):
       if jsonNode.contains(confField):
         let formattedString = ($jsonNode[confField]).strip(chars = {'\"'})