memberOf attributes not working through slapd-ldap backend

[Liam Gretton <liam.gretton@leicester.ac.uk>]

Hi,

Main LDAP server is 2.4 on openSUSE. The memberof overlay is in use.

On any openSUSE clients (also OpenLDAP 2.4), ldapsearch on a uid with a 
'+' for the attribute arguments correctly returns the memberOf 
attributes as created by the overlay.

On Scientific Linux 5.4 I have a build of OpenLDAP 2.4 (not mine, 
supplied by our vendor which repackages some components). I've setup a 
proxy server there which uses slapd-ldap to proxy connections back to 
the openSUSE LDAP server.

On the SL system, ldapsearch talking directly to the openSUSE server 
correctly returns the memberOf attributes when using '+'. But when going 
through the local proxy server, they don't appear. The server log says 
"PROXIED attributeDescription "MEMBEROF" inserted"; if I specify the 
attribute explicitly (e.g. ldapsearch uid=liam memberof) the memberOf 
attributes are displayed, but all in capitals, as if there's a schema 
missing.

One possibly important point: we're using the rfc2307bis schema on our 
main server, and this isn't supplied with the SL distribution of 
OpenLDAP, so I've just copied it over to the SL system.

I think this suggests a broken build of OpenLDAP 2.4 supplied by our 
vendor, but is there anything I might be doing wrong? The proxy server's 
slapd.conf file is as so:

include         /cm/local/apps/openldap/etc/schema/core.schema
include         /cm/local/apps/openldap/etc/schema/cosine.schema
include         /cm/local/apps/openldap/etc/schema/inetorgperson.schema
include         /cm/local/apps/openldap/etc/schema/rfc2307bis.schema
include         /cm/local/apps/openldap/etc/schema/rcsperson.schema

argsfile        /var/run/openldap/slapd.args
pidfile         /var/run/openldap/slapd.pid

database        ldap
monitoring      off

uri             ldap://opensuse.ldapserver.example.com
tls             start tls_cacertdir=/etc/openldap/certs
suffix          dc=example,dc=com
rootdn          "cn=admin,dc=example,dc=com"

--
Liam Gretton                                    liam.gretton@le.ac.uk
HPC Architect                                http://www.le.ac.uk/its/
IT Services                                   Tel: +44 (0)116 2522254
University Of Leicester, University Road
Leicestershire LE1 7RH, United Kingdom