Re: [aspectj-users] AspectJ and JAAS problem

[Ramnivas Laddad <ramnivas@xxxxxxxxx>]

This does look like permission configuration issue.
Can you try to print value returned by getClass() in 
both cases? Perhaps that will give a hint.

Can you show minimal code that reproduces the problem?

-Ramnivas

--- Hågen_Hasle <haagen@xxxxxxxxxxxx> wrote:
> 
> I have a problem with AspectJ I don't quite understand...
> 
> I have my AOP-code in two different packages.
> One abstract aspect one place, and a concrete aspect together with
> the code
> I want to weave it into.
> 
> In the abstract aspect I have defined an around advice that handles
> authorization with a doAsPrivileged-block.  In the concrete aspect I
> have
> the pointcut.
> 
> The problem I have is that code in the cflow of the
> doAsPrivileged-block
> start to misbehave.  There are several
> getClass().getResource("/path/to/picture.jpg") that suddenly returns
> null
> instead of the picture.  If I move the around advice to the concrete
> aspect,
> everything works.
> 
> I don't quite know if this is some kind of classloader error, or if I
> need
> to change the JAAS permissions (include some kind of filePermission
> perhaps?)  The error-message I get is a nullpointer exception when
> the
> picture is used in a constructor, and not an
> AccessControllerException as I
> might have expected.
> 
> If I move the folder with the pictures inside the folder-structure
> where my
> abstract aspect lies, the error goes away.  But it pops up somewhere
> else
> instead, in code that is identical (getClass().getResource("...")
> except it
> hasn't been weaved with the around-advice, so it's not inside a
> doAsPrivileged-block.  This suggests to me that it has something to
> do with
> the classloader. (?)
> But if I don't move the pictures, but instead include a
> java.security.AllPermission in the JAAS policy-file, everything works
> perfectly.  This suggests I need to find the right permission, but if
> that's
> the case - why doesn't I get an AccessControllerException in the
> first
> place?
> 
> I hope I have explained enough here.  Any suggestions to what I'm
> doing
> wrong is greatly appreciated.
> 
> Apologies if my english is below par..
> 
> Regards,
> 
> Hågen
> haagen@xxxxxxxxxxxx
> 
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