[horde] How to get the ldap users list ?

[gerard breiner]

I use a ldap server for authenticating in horde/imp. In the webmail 
admin interface I can see the group list and I get the users list by 
clicking groups.
My problem is I would like to have the entire user list so that I can 
assign permissions by users and not only by group .
Actually, I get the group list from my ldap server for I set up  in 
/horde/config/config.php  :
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$conf['group']['params']['hostspec'] = 'ldap.domain';
$conf['group']['params']['basedn'] = 'ou=groupes,dc=domain,dc=fr';
$conf['group']['params']['binddn'] = 
'uid=user,ou=personnes,dc=domain,dc=fr';
$conf['group']['params']['password'] = '*****';
$conf['group']['params']['version'] = '3';
$conf['group']['params']['gid'] = 'cn';
$conf['group']['params']['memberuid'] = 'memberUid';
$conf['group']['params']['attrisdn'] = false;
$conf['group']['params']['newgroup_objectclass'] = array('posixGroup');
$conf['group']['params']['objectclass'] = array('posixGroup');
$conf['group']['params']['filter_type'] = 'objectclass';
$conf['group']['driver'] = 'ldap';
$conf['group']['cache'] = false;
----------------------------------------------------------

An idea please ?
Best regards.
Gerard

-- 
Gerard Breiner
Institut d'Astrophysique Spatiale
Batiment 121 
F-91405 Orsay Campus