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steffen.krahl@nexio.de wrote:

I'm using OpenLDAP with LDAP-backend as proxy for ActiveDirectory=20 It's working well so far, only LDAP-queries which should exclude deactivated users don't work. It seems slapd does not accept queries like (attribute:OID:=3Dvalue)

OpenLDAP does support extended filters with a matching rule. But only with matching rules implemented in OpenLDAP.

in particular (!(userAccountControl:1.2.840.113556.1.4.803:=3D2)))

The matching rule defined by 1.2.840.113556.1.4.803 is a proprietary matching rule defined by Microsoft for bit-wise matching. AFAICS they never wrote a public formal spec for it. So this particular matching rule is not implemented in OpenLDAP.

performing upper query gets: Oct 1 00:45:33 nxld01 slapd[3002]: str2filter "(&(sAMAccountType=3D 805306368)(?=3Derror))" Oct 1 00:45:3=

3

nxld01 kernel: [49436.933735] slapd[3005]: segfault at 18 ip=20 00007ff4f783d512 sp 00007ff4f1afc810 error 4 in=20 libc-2.23.so[7ff4f77b9000+1c0000]

Does that mean slapd seg faults? It shouldn't.

performing the following query (&(objectClass=3D*)(userAccountControl:1.2.840.113556.1.4.803:=3D2)) will get following log wntry: Oct 1 00:49:07 nxld01 slapd[3033]: str2filter "(&(objectClass=3D*)(!(objectClass=3D*)))"

IMO it makes perfect sense to treat extended filter part with a non-supported matching rule as a filter which always evaluates to False.

Ciao, Michael.

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