Once again, thanks for the excellent product and the quick feedback. A
big win in migrating my legacy application security infrastructure to
Acegi Security is that the SwitchUser functionality offers more
functionality out of the box than the legacy implementation. Whereas
the legacy implementation did not remember who switched in the first
place, I now have "exitUser", which allows users to switch multiple
times within a session. Very nice.
Once again I encountered an issue related to my custom UserDetails
implementation. When performing the exitUser function, I experienced
strange behavior. The application would log me out where I expected to
receive the "switch user" prompt. Inspecting the logs I found the
following runtime exception.
java.lang.IllegalArgumentException: User is required
at org.springframework.util.Assert.notNull(Assert.java:90)
at
net.sf.acegisecurity.providers.dao.event.AuthenticationEvent.<init>(AuthenticationEvent.java:57)
at
net.sf.acegisecurity.providers.dao.event.AuthenticationSwitchUserEvent.<init>(AuthenticationSwitchUserEvent.java:40)
at
net.sf.acegisecurity.ui.switchuser.SwitchUserProcessingFilter.attemptExitUser(SwitchUserProcessingFilter.java:272)
at
net.sf.acegisecurity.ui.switchuser.SwitchUserProcessingFilter.doFilter(SwitchUserProcessingFilter.java:213)
Upon investigation I learned that the SwitchUserProcessingFilter was
passing a null parameter to the AuthenticationSwitchUserEvent
constructor because my UserDetails was not a
net.sf.acegisecurity.providers.dao.User. I updated my copy to check
for UserDetails rather than User and it works great. All the tests
pass as well without further modification.
I have included the patch below.
Regards,
Matt DeHoust
Index: SwitchUserProcessingFilter.java
===================================================================
RCS file:
/cvsroot/acegisecurity/acegisecurity/core/src/main/java/net/sf/acegisecurity/ui/switchuser/SwitchUserProcessingFilter.java,v
retrieving revision 1.5
diff -u -r1.5 SwitchUserProcessingFilter.java
--- SwitchUserProcessingFilter.java 19 Sep 2005 02:22:43 -0000 1.5
+++ SwitchUserProcessingFilter.java 20 Sep 2005 01:38:45 -0000
@@ -26,7 +26,6 @@
import net.sf.acegisecurity.context.SecurityContextHolder;
import net.sf.acegisecurity.providers.UsernamePasswordAuthenticationToken;
import net.sf.acegisecurity.providers.dao.AuthenticationDao;
-import net.sf.acegisecurity.providers.dao.User;
import net.sf.acegisecurity.providers.dao.UsernameNotFoundException;
import net.sf.acegisecurity.providers.dao.event.AuthenticationSwitchUserEvent;
import net.sf.acegisecurity.ui.WebAuthenticationDetails;
@@ -263,8 +262,8 @@
UserDetails originalUser = null;
Object obj = original.getPrincipal();
- if ((obj != null) && obj instanceof User) {
- originalUser = (User) obj;
+ if ((obj != null) && obj instanceof UserDetails) {
+ originalUser = (UserDetails) obj;
}
// publish event
-------------------------------------------------------
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