Re: Referral support (was: port of Net::LDAP::Entry)

[<mi...@st...>]

Robert Sander wrote:
> On Thu, Jul 25, 2002 at 11:59:21AM +0200, Michael Str=F6der wrote:
>=20
>>Before I write a pile of postings about it I'd like to know what=20
>>your understanding of handling referrals is.
>=20
> The Perl modules in Net::LDAP return a entries array and a references
> array after a search when the parameter "deref" is set to 3. I think
> this is DEREF_ALWAYS.

Option OPT_DEREF has nothing to do with referrals. It's for=20
aliases. OPT_REFERRALS is the relevant option which defines=20
whether the OpenLDAP library internally follows referrals or not.

> With the referrals you are able to search further in the tree.

If you switch off internal referral handling you will receive=20
search continuations along with normal search results as tuples=20
with None as first item and a string containing the LDAP URL as=20
second item. (Note that it might block when python-ldap is using=20
the OpenLDAP 2.1 libs. I did not have the possibility to track=20
down this issue.)

See example:

http://sites.inka.de:8002/web2ldap?ldap://ldap.rediris.es/dc%3Des??one?

(Please use [Disconnect] after use to quickly erase the LDAP=20
connection. This demo runs on a restricted shell-account allowing=20
only 24 file handles).

Example code:

-------------------------------------------------------------------
import ldap

l=3Dldap.initialize('ldap://ldap.rediris.es')
l.set_option(ldap.OPT_PROTOCOL_VERSION,ldap.VERSION3)
l.set_option(ldap.OPT_REFERRALS,0)
result =3D l.search_s('dc=3Des',ldap.SCOPE_ONELEVEL,'(objectClass=3D*)')
for i in result:
   print i
-------------------------------------------------------------------

Ciao, Michael.