JAAS authentication with WebLogic 6 - "Invalid Configuration Class Name"

Question

For starters, I took the sample file examples.security.jaas.SampleConfig, changed the name and
package, compiled, and copied it to the right place in the classes directory of the webapp project.
The class is specified as a parameter in startWebLogic.cmd:
-Dweblogic.security.jaas.Configuration="com.ww.opd.auth.JAASConfiguration"
When a servlet attempts to get LoginContext, I get this error:
"Invalid Configuration Class Name: com.ww.opd.auth.JAASConfiguration"
The class file is definitely in the right place. What's the deal?
Thanks,
Rob

Answer 1

Seems to be a ClassLoader problem. The sample is a client app, so no problem. But if you create
a Configuration class to run on the server (to set up a LoginModule for authenticating clients)...
I think what's happening is that the System class loader, using the CLASSPATH in the environment
of the WebLogic server when it starts, attempts to load the Configuration class and can't (because it
is in the CLASSPATH of the web app, not of the System class loader). If you add the Configuration
class to the CLASSPATH of the WebLogic server, then it gets loaded but the LoginModule can't be
found. If you add the LoginModule to the WebLogic server CLASSPATH, then any classes that it calls
must also be in the WebLogic server CLASSPATH.
Could someone from BEA please comment: is that the intention, that any classes used for JAAS
authentication be part of the server's CLASSPATH, not part of the web application?
Thanks,
Rob
"Rob Weltman" <[email protected]> wrote:
>
For starters, I took the sample file examples.security.jaas.SampleConfig, changed the name and
package, compiled, and copied it to the right place in the classes directory of the webapp project.
The class is specified as a parameter in startWebLogic.cmd:
-Dweblogic.security.jaas.Configuration="com.ww.opd.auth.JAASConfiguration"
When a servlet attempts to get LoginContext, I get this error:
"Invalid Configuration Class Name: com.ww.opd.auth.JAASConfiguration"
The class file is definitely in the right place. What's the deal?
Thanks,
Rob