[SSSD] [PATCH] libwbclient: SSSD implementation

Jakub Hrozek jhrozek at redhat.com
Thu Aug 21 15:51:58 UTC 2014


On Thu, Aug 21, 2014 at 01:38:02PM +0200, Sumit Bose wrote:
> On Thu, Aug 21, 2014 at 01:27:58PM +0200, Jakub Hrozek wrote:
> > On Wed, Aug 20, 2014 at 05:38:56PM +0200, Sumit Bose wrote:
> > > > > wbcGetgrnam and wbcGetgrnam have wrong comments, but this trivial bug is
> > > > > also in Samba.
> > > > > 
> > > > > Are you sure the asprintf() call in wbcLookupName is safe? Could this
> > > > > enable someone to trash the stack with a long enough name?
> > > > 
> > > > I added some checks to prevent this.
> > 
> > For some reason I thought that asprintf allocates on the stack like
> > alloca and didn't see the call to free. In this case, I don't think the
> > check is needed.
> 
> I think the NULL checks still make sense and if you agree I would keep
> the others just as sanity checks.
> 
> bye,
> Sumit

OK, the additional checks don't hurt.

I tested the latest version of the patch and all the interface entry
points I could test work fine.

As discussed with Sumit, winbind supports the name at domain notation.
Because it might be useful to support that from sssd, too, I filed
https://fedorahosted.org/sssd/ticket/2414 to track that.

ACK to the patch.



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