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http://issues.apache.org/bugzilla/show_bug.cgi?id=41407

           Summary: CLIENT-CERT Authentication with JAASRealm not working
           Product: Tomcat 5
           Version: 5.5.20
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Catalina
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: [EMAIL PROTECTED]


I tried to config my webapp to authenticate user by CLIENT-CERT auth method.

I verified my JAAS LoginModule by using "BASIC" to auth method and successfully 
authenticated user login.

After studying Tomcat 5.5.20 source, I found that the problem is caused by the 
RealmBase.java and JAASRealm.java.

if CLIENT-CERT auth method is used, SSLAuthenticator will call the :

  JAASRealm.authenticate(X509Certificate certs[])

As JAASRealm didn't override authenticate(X509Certificate certs[]), RealmBase's 
authenticate will be used and it will only validate the certs and then call
getPrincipal(X509Certificate) and then getPrincipal(String) is being called to 
get the Principal. However, in JAASRealm, this function always return null.

That means Tomcat can't use JAASRealm with CLIENT-CERT auth method.

Thanks
Butler

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