I'm trying to implement a servlet filter that intercepts requests to a
servlet and if the user is not authenticated, run the supplied username and
password through a JAAS authentication cycle.

I would like to know how this process is done using the j_security_check as
I'd like to implement the same functionality. I wish to be able to JAAS
authenticate when the filter intercepts the request so that after the
authentication I can call request.isUserInRole(), request.getUserPrincipal(),
request.getRemoteUser() etc.

After looking at the API docs at
http://jakarta.apache.org/tomcat/tomcat-4.1-doc/catalina/docs/api/index.html
I have found the org.apache.catalina.realm.JAASCallbackHandler and suspected
that if I can find the realm, (set up as a JDBC realm in the server.xml), and
then pass in the username and password to this callback handler - I can run
the .login() method somehow.

Any help would be appreciated, if you know of any howtos or docs, that would
be great!

Cheers,

Ben


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