Howto include JAAS config file in jar-file?

Hello!
I need to get the UserName and Domain from unix/windows workstations my users are working on.
For this task I use JAAS, however it forces me to create my own login-configuration which looks like this:
Test
//com.sun.security.auth.NTLoginModule sufficient debug=true;
com.sun.security.auth.module.UnixLoginModule sufficient debug=true;
}; 1.) I have to hard-code the path which is quite ugly, so is it possible to pack this configuration into a jar file and how can I tell JAAS that it can find the configuration INSIDE the jar file?
2.) To use my own configuration is very ugly. I have to if(java.os).... for every configuration because on Linux of course no NTLoginModule is found and vice versa.
It also is quite anoying that the proprietary class names are hard-coded. What if I want to run this on apple or ibm jvm?
Thanks in advance, lg Clemens

I found a solution: simply pass a URL in the property and jaas will load the config-fle from the url!

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