fix MQTT crash (#3127)

2024-01-24 14:01:50 -06:00
parent 4ae5443c3b
commit f2c04c5504
1 changed files with 4 additions and 1 deletions
@@ -131,7 +131,10 @@ void MQTT::onReceive(char *topic, byte *payload, size_t length)
        }
        delete json_value;
    } else {
-        if (!pb_decode_from_bytes(payload, length, &meshtastic_ServiceEnvelope_msg, &e)) {
+        if (length == 0) {
+            LOG_WARN("Empty MQTT payload received, topic %s!\n", topic);
+            return;
+        } else if (!pb_decode_from_bytes(payload, length, &meshtastic_ServiceEnvelope_msg, &e)) {
            LOG_ERROR("Invalid MQTT service envelope, topic %s, len %u!\n", topic, length);
            return;
        } else {