On Fri, Jan 30, 2015 at 02:24:34PM +0100, Sumit Bose wrote:
On Fri, Jan 30, 2015 at 02:23:43PM +0100, Sumit Bose wrote:
> On Fri, Jan 30, 2015 at 01:27:34PM +0100, Jakub Hrozek wrote:
> > On Wed, Jan 28, 2015 at 08:18:04PM +0100, Sumit Bose wrote:
> > > On Wed, Jan 28, 2015 at 04:21:53PM +0100, Sumit Bose wrote:
> > > > On Wed, Jan 28, 2015 at 03:27:44PM +0100, Jakub Hrozek wrote:
> > > > > On Wed, Jan 28, 2015 at 03:05:00PM +0100, Sumit Bose wrote:
> > > > > > Hi,
> > > > > >
> > > > > > another issue found by Steeve during testing. To reproduce
this you need
> > > > > > a universal group with members from different domains. Then
either look
> > > > > > up the group by SID e.g. with
> > > > > >
> > > > > > python -c "import pysss_nss_idmap; print
pysss_nss_idmap.getnamebysid('S-1-5-21-3456664713-2053453454-4165325232-1234')"
> > > > > >
> > > > > > and then with getent group groupname.
> > > > > >
> > > > > > Or use IPA views, override the group name in the
'default trust view'
> > > > > > on the IPA server and look up the group by the overridden
name. In both
> > > > > > case the group should not already be in the cache. Only
members from the
> > > > > > domain of the group should be show without the patch.
> > > > > >
> > > > > > bye,
> > > > > > Sumit
> > > > >
> > > > > The patch is correct, but I'm worried about the
implications. What kind
> > > > > of requests by SID does the server receive? Do we also resolve
requests
> > > > > for users by SID? In that case, we might be surprised that some
POSIX
> > > > > attributes are not available in GC..
> > > >
> > > > good point, I'm working on a group only alternative.
> > >
> > > Please find attached a slightly extended version. It tries to switch to
> > > the LDAP connection in the common LDAP code. We already do similar
> > > things during group requests in the common LDAP code so I hope this is
> > > ok. This switch only happens during user_and_group request where it is
> > > not clear if the match will be a user or a group, e.g. a search by SID.
> > > I have to admit that there is a side effect because the AD provider uses
> > > GC lookups with LDAP fallback for these types of requests and will be
> > > affected by this change as well. But since the more detailed user
> > > information will be available via LDAP this might even be a benefit.
> > >
> > > bye,
> > > Sumit
> >
> > [...]
> >
> > > - if (state->sdap_ret == ENOENT) {
> > > + if (state->sdap_ret == ENOENT && state->noexist_delete
== true) {
> >
> > I don't think this change is correct, the noexist_delete check should be
> > in its own nested if, otherwise looking up a SID that matches neither user
> > nor group fails with EIO:
>
> ah sorry, of course you are right new version attached.
and now with a patch.
ACK