RFR 8048073: Cannot read ccache entry with a realm-less service name

Xuelei Fan xuelei.fan at oracle.com
Wed Jun 25 09:05:46 UTC 2014


On 6/25/2014 4:48 PM, Wang Weijun wrote:
> Please review the fix at
> 
>    http://cr.openjdk.java.net/~weijun/8048073/webrev.00/
> 
Looks fine to me.  It would be nice to add more comment about why you
want to ignore the principal
   if (cpname == null || spname == null)

Xuelei

> Running native krb5 could generate a ccache file like this
> 
>   Valid starting     Expires            Service principal
>   06/25/14 14:05:06  06/26/14 00:05:06  krbtgt/K1 at K1
>   06/25/14 14:12:35  06/26/14 00:05:06  HTTP/localhost@
>   06/25/14 14:12:35  06/26/14 00:05:06  HTTP/localhost at K1
> 
> Please note the 2nd ticket has a service principal with no realm. I guess it's a result of kerberos referral. Since OpenJDK does not support referral (yet), the PricipalName always has a realm and reading such a ccache throws out an exception. After this fix such entries are ignored and Java's klist would show
> 
>   [1]  Service Principal:  krbtgt/K1 at K1
>        Valid starting:     Jun 25, 2014 14:05:06
>        Expires:            Jun 26, 2014 00:05:06
>   [2]  Service Principal:  HTTP/localhost at K1
>        Valid starting:     Jun 25, 2014 14:12:35
>        Expires:            Jun 26, 2014 00:05:06
> 
> Thanks
> Max
> 



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