From 09ad65e2e41432e2b9c5282de1d862ca8f942c1d Mon Sep 17 00:00:00 2001
From: fredlcore <github@code-it.de>
Date: Thu, 5 Dec 2024 18:35:32 +0800
Subject: [PATCH] Bugfix

---
 BSB_LAN/include/mqtt_handler.h | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/BSB_LAN/include/mqtt_handler.h b/BSB_LAN/include/mqtt_handler.h
index 940923fa..c14bed7b 100644
--- a/BSB_LAN/include/mqtt_handler.h
+++ b/BSB_LAN/include/mqtt_handler.h
@@ -378,8 +378,14 @@ void mqtt_callback(char* topic, byte* passed_payload, unsigned int length) {
       default: {setmode = 2;break;}
     }
     param = parsingStringToParameter(payload);
-    payload=strchr(payload,'=');
-    payload++;
+    if (setmode < 2) {
+      payload=strchr(payload,'=');
+      if (payload == NULL) {
+        printFmtToDebug("MQTT message does not contain '=', discarding...\r\n");
+        return;
+      }
+      payload++;
+    }
   } else {
     printFmtToDebug("MQTT message not recognized: %s - %s\r\n", topic, payload);
     return;