x509 authentication AND a user repository

[Velpi]

> Since you have your complete list of users in your user repository you 
> could use the Authentication Handlers unmodified (just limiting using 
> the subject DN) and then use the custom CredentialsToPrincipalsResolver 
> to turn the credentials into a Principal (and returning null if none can 
> be found).
After building this, I had to modify 
AbstractX509CertificateCredentialsToPrincipalResolver so it can also handle a 
"null" principal, but it seems all classes cannot handler returning null in 
stead of a principal (see included log). [I'm building on CAS 3.0.5-RC1]


Any other ideas? [meanwhile I'll keep looking]



13:19:36,852 [http-8443-Processor25] INFO  Principal was not found in LDAP, 
returning null - 
org.jasig.cas.adaptors.x509.authentication.principal.X509CertificateCredentialsToLDAPAttributePrincipalResolver 


13:19:36,852 [http-8443-Processor25] INFO  Principal could not be resolved, 
returning null - 
org.jasig.cas.adaptors.x509.authentication.principal.X509CertificateCredentialsToLDAPAttributePrincipalResolver 


13:19:36,892 [http-8443-Processor25] ERROR Servlet.service() for servlet cas 
threw exception - 
org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/cas].[cas]
java.lang.IllegalArgumentException: principal cannot be null
	at org.springframework.util.Assert.notNull(Assert.java:117)
	at 
org.jasig.cas.authentication.AbstractAuthentication.<init>(AbstractAuthentication.java:31)
	at 
org.jasig.cas.authentication.MutableAuthentication.<init>(MutableAuthentication.java:32)
	at 
org.jasig.cas.authentication.AuthenticationManagerImpl.authenticate(AuthenticationManagerImpl.java:114)
	at 
org.jasig.cas.CentralAuthenticationServiceImpl.createTicketGrantingTicket(CentralAuthenticationServiceImpl.java:282)
	at 
org.jasig.cas.web.flow.AbstractNonInteractiveCredentialsAction.doExecuteInternal(AbstractNonInteractiveCredentialsAction.java:68)
	at 
org.jasig.cas.web.flow.AbstractLoginAction.doExecute(AbstractLoginAction.java:63)
	at 
org.springframework.webflow.action.AbstractAction.execute(AbstractAction.java:217)


--Velpi