[PATCH] Fix for bug #13369

[Andreas Schneider via samba-technical]

Hi,

If the Windbind caches are cold and we look up the user using the UPN will
result in user name with REALM+user instead of the DOMAIN+user. At least this
happens in 4.7. In 4.8 this isn't the case but we store:

EARTH.MILKYWAY.SITE\bob1 in the cache. The patch makes sure if we got a realm,
to lookup the name and use the consistent domain name storing it in the cache
(EARTH\bob1).

Output showing the bug in v4-7:

$ getent passwd ***@EARTH.MILKYWAY.SITE
EARTH.MILKYWAY.SITE\bob1:*:100001107:100000513::/home/EARTH.MILKYWAY.SITE/
bob1:/bin/bash


Please review.


Thanks,


Andreas