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Re: [ldapext] when is manageDsaIT needed for the root DSE?




Jim,

Jim Sermersheim wrote:
Thanks Steven,

Does your implementation allow updates to attributes of the root DSE?

Yes. In DAP, only if manageDSAIT is used.

If so, does it allow LDAP to perform updates without ManageDsaIT?

We allow modifies of the root DSE in LDAP with or without manageDSAIT.

Our implementation always has a root DSE, so add entry and remove entry
on the root name are disallowed. ModifyDN is disallowed for obvious reasons.

Glue entries can only be updated if manageDSAIT is used.

Regards,
Steven


Steven Legg <steven.legg@eb2bcom.com> 9/23/04 6:34:47 PM >>>


Jim,

Jim Sermersheim wrote:


True, if there is a check to validate that aliasedObjectName points

to an entry > or alias DSE, this should just result in an error.

So, getting back to my original question * does anyone know if X.500

allows access > to the root DSE without the use of ManageDsaIT?

I believe X.500 does not allow the root DSE (or any glue entry for that
matter) to
be visible except when manageDSAIT is used. This is how our
implementation works
for DAP and DSP. In LDAP we special-case a baseObject search of the
root DSE.

Regards,
Steven


Jim



"Kurt D. Zeilenga" <Kurt@OpenLDAP.org> 9/23/04 3:33:34 PM >>>

At 02:16 PM 9/23/2004, Jim Sermersheim wrote:


I can reconcile some things, but not others. It's the inverse that is

the problem * in the absense of manageDsaIT, when is the root to be treated as a normal object?

I *think* X.500 says never, and LDAP special cased read, and sort of

left the door open for special casing write.

I was hoping that an X.500 vendor with an LDAP front-end could

clarify (as they would have implemented the X.500 semantics, and the LDAP front-end would have done something to special case where needed).

Another question is: Assume an alias object <dc=TopOfTheWorld> which

has an aliasedObjectName set to the empty DN.


One could consider this invalid. aliasObjectName is suppose to refer an object entry (or possibly another alias entry). Having an alias refer to a root DSE, which is not part of the DIT, makes no (or, at most, little) sense.



If a base-scope search is rooted at that alias, the filter is

(objectclass=*), and derefAliases is derefFindingBaseObj, what is the proper behavior? I think RFC 2251 could be read either way.


I would think the server would return some sort of aliasing error here. (I believe the OpenLDAP server does.)



What I wanted to do with the distproc I-D was give a simple, straight

forward way of determining whether a DSE reresents a normal object (in
the absense of manageDsaIT).


Jim



"Kurt D. Zeilenga" <Kurt@OpenLDAP.org> 9/22/04 6:50:28 PM >>>

Though I said "I disagree" over on the LDAPBIS list, in retrospect, I would have to minimally agree that a server *could* returning the rootDSE in response to subtree manageDsaIt search. RFC 3296 says: The control MAY cause other objects to be treated as normal entries as defined by subsequent documents.

While there is no subsequent document stating how this
control would cause rootDSE to be treated as a normal
entry, I think it reasonable that some subsequent document
could state how.  I would hope that any such document
would state a how consistent with X.511(97) manageDsaIt
service.

Are you able to reconcile things if you assume that
the rootDSE is treated as a normal object in
manageDsaIT searches with baseObject=""?


Kurt



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