Programatic management of security

[Hector Gonzalez]

Hi all,

I am working with Tomcat 3.1 beta 6, and Jonas 2.1. I plan to user JDBCRealm
for user authentication. Is it possible to:

1. Modify the realm programatically, that is add users, remove users, add
roles, etc.
2. Tell tomcat that user x should be logged into the application. I would
like to automatically log some users based on a cookie.

Thanks in advance

Hector Gonzalez