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Whenchanged or modifyTimestamp filter

Hi,
 
I want to configure openldap to work as a proxy for Active Directory.
I have :

This work fine but I have a problem with this type of filter :
- ldapsearch -x  -D "cn=manager,dc=openldap,dc=priv" -W "(&(objectClass=*)(whenChanged>=20080812000000.0Z))"
- ldapsearch -x  -D "cn=manager,dc=openldap,dc=priv" -W "(&(objectClass=*)(modifyTimestamp>=20080812000000.0Z))"

=> I have no result

But with this type of filter : ldapsearch -x  -D "cn=manager,dc=opencg21,dc=priv" -W "(&(objectClass=*)(uid=MyUsername))"

=> I can see the whenChanged and modifyTimestamp attributes.

Can someone help me?

I don't know how to have an error code to see where is the pb

Thanks a lot.

----------------------------------------------

here is my slapd.conf

--------------------------------------------


#
# See slapd.conf(5) for details on configuration options.
# This file should NOT be world readable.
#
include  /etc/openldap/schema/corba.schema
include  /etc/openldap/schema/core.schema
include  /etc/openldap/schema/cosine.schema
include  /etc/openldap/schema/duaconf.schema
include  /etc/openldap/schema/dyngroup.schema
include  /etc/openldap/schema/inetorgperson.schema
include  /etc/openldap/schema/java.schema
include  /etc/openldap/schema/misc.schema
include  /etc/openldap/schema/nis.schema
include  /etc/openldap/schema/openldap.schema
include  /etc/openldap/schema/ppolicy.schema
include  /etc/openldap/schema/collective.schema
include  /etc/openldap/schema/microsoft-minimal.schema
# Allow LDAPv2 client connections.  This is NOT the default.
allow bind_v2
# Do not enable referrals until AFTER you have a working directory
# service AND an understanding of referrals.
#referral ldap://root.openldap.org
pidfile  /var/run/openldap/slapd.pid
argsfile /var/run/openldap/slapd.args
# Load dynamic backend modules
# - modulepath is architecture dependent value (32/64-bit system)
# - back_sql.la overlay requires openldap-server-sql package
# - dyngroup.la and dynlist.la cannot be used at the same time
# modulepath /usr/lib/openldap
# modulepath /usr/lib64/openldap
# moduleload accesslog.la
# moduleload auditlog.la
# moduleload back_sql.la
# moduleload chain.la
# moduleload collect.la
# moduleload constraint.la
# moduleload dds.la
# moduleload deref.la
# moduleload dyngroup.la
# moduleload dynlist.la
# moduleload memberof.la
# moduleload pbind.la
# moduleload pcache.la
# moduleload ppolicy.la
# moduleload refint.la
# moduleload retcode.la
moduleload rwm.la
# moduleload seqmod.la
# moduleload smbk5pwd.la
# moduleload sssvlv.la
# moduleload syncprov.la
# moduleload translucent.la
# moduleload unique.la
# moduleload valsort.la
moduleload back_ldap
moduleload rwm

# The next three lines allow use of TLS for encrypting connections using a
# dummy test certificate which you can generate by running
# /usr/libexec/openldap/generate-server-cert.sh. Your client software may balk
# at self-signed certificates, however.
TLSCACertificatePath /etc/openldap/certs
TLSCertificateFile "\"OpenLDAP Server\""
TLSCertificateKeyFile /etc/openldap/certs/password
# Sample security restrictions
# Require integrity protection (prevent hijacking)
# Require 112-bit (3DES or better) encryption for updates
# Require 63-bit encryption for simple bind
# security ssf=1 update_ssf=112 simple_bind=64
# Sample access control policy:
# Root DSE: allow anyone to read it
# Subschema (sub)entry DSE: allow anyone to read it
# Other DSEs:
#  Allow self write access
#  Allow authenticated users read access
#  Allow anonymous users to authenticate
# Directives needed to implement policy:
# access to dn.base="" by * read
# access to dn.base="cn=Subschema" by * read
# access to *
# by self write
# by users read
# by anonymous auth
#
# if no access controls are present, the default policy
# allows anyone and everyone to read anything but restricts
# updates to rootdn.  (e.g., "access to * by * read")
#
# rootdn can always read and write EVERYTHING!

# enable on-the-fly configuration (cn=config)
database config
access to *
 by dn.exact="gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth" manage
 by * none
# enable server status monitoring (cn=monitor)
database monitor
access to *
 by dn.exact="gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth" read
        by dn.exact="cn=Manager,dc=opencg21,dc=priv" read
        by * none
############################################################
#LDAP
############################################################
database  ldap
suffix   "OU=MYOU,DC=MYDC,DC=PRIV"
uri ldap://mydc.cg21.priv
rebind-as-user
acl-bind
                bindmethod=simple
                binddn="CN=****,DC=PRIV"
                credentials="***"
idassert-bind  
  bindmethod=simple
  binddn="CN=****,DC=PRIV"
        credentials="***"
  mode=none
lastmod  on
idassert-authzFrom *
access to *
 by * read
############################################################
#RELAY
############################################################
database relay
suffix  "ou=myOU,dc=openldap,dc=priv"
relay  "ou=myOU,dc=mydc,dc=priv"
subordinate
overlay rwm
rwm-rewriteEngine on
rwm-rewriteContext default
rwm-rewriteRule "(.+,)?ou=myOU,dc=openldap,dc=priv$" "$1ou=myOU,dc=mydc,dc=priv" ":"
rwm-rewriteContext searchEntryDN
rwm-rewriteContext searchAttrDN
rwm-rewriteRule "(.+,)?dc=openldap,dc=priv$" "$1dc=openldap,dc=priv" ":"
rwm-rewriteContext searchFilter
rwm-rewriteContext referralAttrDN
rwm-rewriteContext referralDN
rwm-map attribute uid sAMAccountName
rwm-map attribute modifyTimestamp modifyTimestamp 
#rwm-map objectclass inetOrgPerson *
rwm-map objectclass groupOfNames group
rwm-normalize-mapped-attrs yes

#############################################################
#DATABASE PRINCIPALE
############################################################
database bdb
suffix  "dc=openldap,dc=priv"
checkpoint 1024 15
rootdn  "cn=Manager,dc=openldap,dc=priv"
# Cleartext passwords, especially for the rootdn, should
# be avoided.  See slappasswd(8) and slapd.conf(5) for details.
# Use of strong authentication encouraged.
rootpw  {SSHA}qGb9L/sewV24o10bQNynt3Kb2Uyv0Ac8  
# The database directory MUST exist prior to running slapd AND
# should only be accessible by the slapd and slap tools.
# Mode 700 recommended.
directory /var/lib/ldap
lastmod  on
# Indices to maintain for this database
index objectClass                       eq,pres
index ou,cn,mail,surname,givenname eq,pres,sub
index uidNumber,gidNumber,loginShell    eq,pres
index uid,memberUid   eq,pres,sub
index nisMapName,nisMapEntry            eq,pres,sub
#index samaccountname
# Replicas of this database
#replogfile /var/lib/ldap/openldap-master-replog
#replica host=ldap-1.example.com:389 starttls=critical
#     bindmethod=sasl saslmech=GSSAPI
#     authcId=host/ldap-master.example.com@EXAMPLE.COM




  

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