No one is answering me ... maybe my question is too newbie/stupid or ill-posed ??
I suppose the last (ill-posed) and therefore I try to explain it again better.
As far as I know, credential/principal has to be propagated within ejb modules in the same JVM/JBoss instance, but it seems this doesn't happen in my system (JBoss 5.1.0 GA).
- Two EJB modules in an EAR. Same security realm.
- A client (web or standalone ... doesn't matter) calls a method A inside a session bean in EJB A.
- The client is authenticated as Principal="SomeOne", Role="MyRole".
- The method requires role "MyRole" by means of @RolesAllowed("MyRole")
- The method A in turns calls a method B, that is inside another session bean in EJB B.
- Also the method B is marked with @RolesAllowed("MyRole").
- Resulting exception: "javax.ejb.EJBAccessException: Caller unauthorized"
Looking into the logs (TRACE level) it points out that:
1) The call to the method A is succerssfully authenticated (Principal="SomeOne", Role="MyRole").
2) The principal/credentials get lost in the subsequent call to method B (Principal=anonymous).
I faced a similar situation where I used the JbossLoginContext to resolve it.
This depends on how you are accessing the EJB methods. I for example, used to create a LoginContext where I passed the role (mentioned in the auth.conf) and the security credentials.
Then called the method login() before invoking the business method and logout() on the LoginCOntext object.