Yoav,
Thanks for the reply. What version of Tomcat are you referring to? I am using
Tomcat 5.0.28. With regards to your code below, there is no
getUserPrincipal() method on the org.apache.catalina.realm.GenericPrincipal
class.
Furthermore, how's this for bizarre -- if I do an instanceof with the class
returned from request.getUserPrincipal(), and print it out, I get the
following:
Principal class is: org.apache.catalina.realm.GenericPrincipal
However, if I try to cast it to that class type in the very next line of code,
the code throws a ClassCastException. Very weird. The library I am using is
the catalina.jar sent with the code (which I happen to be packaging in my
WEB-INF/lib directory of my webapp.
Is it possible that there's another version of this class out there somewhere
in the Tomcat libraries, that's conflicting?
Brad
On Wednesday 19 October 2005 07:15 am, Yoav Shapira wrote:
Hi,
You'd need to cast as follows:
Principal mydude = request.getUserPrincipal();
if(mydude instanceof GenericPrincipal) {
mydude = ((GenericPrincipal) mydude).getUserPrincpal();
}
Yoav
--- Brad O'Hearne [EMAIL PROTECTED] wrote:
After several days of questions on the user mailing list surrounding
this issue, I received an answer today which I need to confirm with any
of the developers out there. Basically, I am using Tomcat 5.0.28, and
using the JAAS realm for authentication and authorization. In my JAAS
login module, I am setting the user principal as a custom Principal
implementation configured in server.xml. Here's my server.xml realm
setup:
Realm className=org.apache.catalina.realm.JAASRealm
appName=imap
userClassNames=com.redbarnsoftware.web.security.UserPrincipal
roleClassNames=com.redbarnsoftware.web.security.RolePrincipal
debug=99 /
My authentication across my login module works just fine. But in my
subsequent servlets, when I invoke the request.getUserPrincipal()
method, I am not returned my user principal class type, but I am instead
returned a GenericPrincipal, and there's no way to get at my custom user
principal class.
Someone on the user list said that though it should be supported,
retrieving custom user principals weren't supported for the JAAS realm.I
just wanted to confirm this with the developers, because its hard for me
to imagine how the Java platform's authentication / authorization API is
not fully supported in a mature app like Tomcat -- it sounded a little
weird to me. So if someone could confirm this, that would really help.
Secondly, if it is in fact unsupported, I would like to inquire 1) if
this feature is planned and if so, when, and 2) what is required to
implement this in the present Tomcat architecture. I'd like to consider
adding this, as it is pretty much a the type of hole that can be a
deal-killer for Tomcat from a security standpoint.
Thanks for your help.
Cheers,
Brad
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Yoav Shapira
System Design and Management Fellow
MIT Sloan School of Management
Cambridge, MA, USA
[EMAIL PROTECTED] / www.yoavshapira.com
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