How to read Java properties file from a JAAS LoginModule

I'd like to read a properties file in my applications WEB-INF folder or my tomcat/apache server from a JAAS loginModule. But I'm not understanding how to properly refer to the location from the LoginModule, in a host name independent manner.

From stackoverflow

• Can't you put your properties in login.conf instead of in a properties file?

  Martlark : I already have properties in the login.conf file but I wanted to use the same properties file as my spring application so as to reduce the amount of configuration proliferation i'm experiencing.

• You could use the catalina.base system property:

  File confDir = new File(System.getProperty("catalina.base"), "conf");
  File confFile = new File(confDir, "myprops.properties");
  InputStream in = new FileInputStream(confFile);
  try {
      props.load(in);
  } finally {
      in.close();
  }
  

  Martlark : Nice solution. Thanks for your help.