Re: schema attributes method

[Justin <da...@io...>]

On Fri, Feb 02, 2001 at 08:40:28AM -0000, Chris Ridd wrote:
> Justin <da...@io...> wrote:
> > Greetings!
> > 
> > 
> > I am using version 0.22 of the perl library and Netscape Directory Server 
> > version 4.12.  Whenver I retrieve the list of attributes using something
> > like:
> > 
> >       my $schema = $ldap->schema("cn=Schema");
> >       my @atts = $schema->attributes();
> > 
> > the array returned from attributes() is all upper case.  However, the
> > values returned from the MUST and MAY listings for an object class,
> > obtained by:
> > 
> >       my @may = $schema->item($oid, "may");
> > 
> > Returns a listing that is in Mixed Case, as it is returned from the
> > directory.
> > 
> > 
> > Can anyone explain why $schema->attributes does not return a mixed case
> > listing?
> 
> Attribute names are of course not case-sensitive, so returning them in all
> upper-case does not really matter.
> 
> But it is curious that it is inconsistent between the calls. Possibly the
> attributes() call is returning the names after they've been internally
> canonicalized, and the item call isn't. I think I can see this being done
> in the _fixup_entry routine. Well, there are a bunch of calls to 'uc' in
> there which weren't in the Schema module in perl-ldap 0.20, which returns
> mixed case attributes from both calls.
> 
> Does calling $schema->item($oid) return upper- or lower-case stuff?

Calling $schema->item($att, "name") returns mixed case, which is what I want.
(where $att is one of @att, returned from $schema->attributes()).

However!

The Netscape Directory Server 4.12 has multiple attributetype entries for
a given OID.  "cn" and "CommonName" for example, share an OID.  I believe
this is allowed as per rfc2251 section 4.1.4.

So calling $schema->item($att, "name"), while it returns a mixed case name
as I like, will only ever return "CommonName" and never "cn" (or both).


Justin






> 
> Cheers,
> 
> Chris