raising warning flag on firewalld-default feature

[Kevin Kofler]

Przemek Klosowski wrote:
> Remember also that data is code: any config files could be seen as tiny
> specialized interpreted languages, so it's not like you can avoid
> interpretation anyway.

That's a bad view of things, it leads to WTFs like PolicyKit using rules 
written in JavaScript. A simple key-value store is not and should not be 
Turing-complete, or even anywhere near Turing-complete. The logic needs to 
be in the native code, not in the configuration.

> Perhaps embracing scripting in system components would have a desirable
> side effect of more uniform config file syntax because it's just easier to
> use some standard form like JSON or XML..

Just standardize on one of the many C-based INI-style file parsing 
libraries.

        Kevin Kofler