Accessing Tomcat 4.03 JNDI service from JAAS LoginModule

Question

Hi!
I have following problem:
I have custom JAAS LoginModule that uses JNDI to lookup DataSource object.
My LoginModule and LoginConfiguration implementation classes are located
in Tomcat's classpath.
I tried first to put JAAS related classes under [TOMCAT-HOME]/common/lib,
but that caused exception:"Unable to load LoginConfiguration".
It looks like Java's core classes have no access/visibility to classes under Tomcat.
I'm using JAAS authentication directly from a servlet, so I'm using no
Tomcat specific realms in authentication.
Servlet just calls:
     LoginContext lc = new LoginContext( jaasApplName,
customUserPasswordCallbackHandler );
     lc.login( );
Everything works fine until LoginModule tries to lookup datasource
after obtaining InitialContext with
          InitialContext initCtx = new InitialContext( );
          DataSource ds = (javax.sql.DataSource) initCtx.lookup(
dataSourceName );
I got exception with message : "Name MIPCoreDS is not bound in this
context.".
MIPCoreDS is configured in Tomcats configuration file server.xml under
<GlobalNamingResources> tag.
Should this be visible for JAAS Login module or not?
When servlet's make same lookup under Tomcat, datasource is found fine.
It seems that loginModules have no visibility to JNDI objects configured
under Tomcat.
Is this right?
Is it possible any way to put JAAS working with Tomcat 4.0.3, so
that LoginModules can access JNDI objects bound to Tomcat's JNDI service?
Is it possible to call Tomcat's JNDI service outside Tomcat?
Any help is appreciated.
Best Regards,
Aki

Answer 1

Using JAAS in Servlets is messy - I found a working example at
http://www.loadedanswers.com
go to the Documents section and the eg is there.
Have fun :)