Re: How is the default-subject used in EJB security?

[David Jencks]

On Oct 16, 2008, at 1:14 PM, Vamsavardhana Reddy wrote:
I have a stateless bean BankBean1 as given below:

@Stateless
@DeclareRoles(value = {"bank", "customer"})
public class BankBean1 implements Bank {

    @RolesAllowed({"customer", "bank"})
    public Double getBalance(Integer account) {
        return data.get(account);
    }

    @RolesAllowed({"bank"})
    public Double creditAccount(Integer account, Double amt) {
        ...
        return value;
    }

    @RolesAllowed({"bank"})
    public Double debitAccount(Integer account, Double amt) {
        ...
        return value;
    }
}

I have a second stateless bean BankBean2 that has a reference  
injected to BankBean1 and uses @RunAs as given below:
@Stateless
@DeclareRoles(value = {"bank", "customer"})
@RunAs(value = "bank")
public class BankBean2 implements Bank2 {

    @EJB
    private Bank bank; // BankBean1 gets injected here.

    public Double getBalance(Integer account) {
        return bank.getBalance(account);
    }

    public Double creditAccount(Integer account, Double amt) {
        return bank.creditAccount(account, amt);
    }

    public Double debitAccount(Integer account, Double amt) {
        return bank.debitAccount(account, amt);
    }
}

In the security mapping in openejb-jar.xml, if I specify a run-as- 
subject for "bank" role, BankBean2 is able to invoke BankBean1 as  
per that run-as-subject specified.  But if I don't specify a run-as- 
subject, but only use a default-subject, BankBean2 is unable to  
invoke BankBean1 as per the default-subject specified. I guess the  
default-subject is being ignored.  This is not the case with run-as- 
subject and default-subject used in geronimo-web.xml.  In the  
absence of run-as-subject I notice that default-subject is used.  I  
am wondering how the default-subject is used in ejb security.

What is the default-subject you have specified?  I'd expect it would  
be used if no run-as subject is specified for the role.  If you are  
trying to tell us that you have specified a default subject with a  
principal that maps to the "bank" role and you still can't access the  
BankBean1 then I think you've found a bug.... jira time :-)

Note that our security system requires some extra configuration for  
the run-as role to actually work, you need to specify a subject  
corresponding to the run-as role.  You are expected to assure that  
some principal in this subject actually maps to the run-as role but  
this is not enfforced.

thanks
david jencks


++Vamsi