mqtt logging: allocate _path according to string length

2023-02-07 19:27:42 +01:00
parent 7848dde274
commit ad648cc22d
1 changed files with 2 additions and 3 deletions
--- a/networkDevices/W5500Device.cpp
+++ b/networkDevices/W5500Device.cpp
@@ -57,11 +57,10 @@ void W5500Device::initialize()

    if(_preferences->getBool(preference_mqtt_log_enabled))
    {
-        _path = new char[200];
-        memset(_path, 0, sizeof(_path));
-
        String pathStr = _preferences->getString(preference_mqtt_lock_path);
        pathStr.concat(mqtt_topic_log);
+        _path = new char[pathStr.length() + 1];
+        memset(_path, 0, sizeof(_path));
        strcpy(_path, pathStr.c_str());
        Log = new MqttLogger(this, _path, MqttLoggerMode::MqttAndSerial);
    }