What is the origin of dsdb_syntax dsdb_syntaxes[] in source4/dsdb/schema/schema_syntax.c?

[Gémes Géza]

2012-04-11 18:57 keltezéssel, Matthieu Patou írta:
> On 04/10/2012 10:46 AM, Gémes Géza wrote:
>> 2012-04-10 19:12 keltezéssel, Matthieu Patou írta:
>>> On 04/10/2012 03:52 AM, Gémes Géza wrote:
>>>> 2012-04-10 09:43 keltezéssel, Matthieu Patou írta:
>>>>> On 04/09/2012 11:55 PM, Gémes Géza wrote:
>>>>>> Hi,
>>>>>>
>>>>>> In an attempt to create AD compatible schema ldif file (to be
>>>>>> loaded in
>>>>>> Samba4) for the ISC DHCPD (LDAP support is included in the ISC DHCPD
>>>>>> from 4.2, but extended to include support for IPv6 by:
>>>>>> http://www.mentby.com/jiri-popelka/isc-dhcp-42-with-ldap-and-ipv6.html)
>>>>>>
>>>>>>
>>>>>> tried  to convert the attached schema file to AD schema ldif.
>>>>>> oLschema2ldif failed after converting a few attributes. Looking
>>>>>> at its
>>>>>> source code I've found, that it is using a mapping between ldap_oid,
>>>>>> attributeSyntax_oid and oMSyntax in dsdb_syntax dsdb_syntaxes[] from
>>>>>> source4/dsdb/schema/schema_syntax.c. In order to be able to
>>>>>> convert an
>>>>>> arbitrary (in my case dhcpd) schema file I would need a generic
>>>>>> mapping
>>>>>> rule set between ldap_oids and attributes needed by AD
>>>>>> (attributeSyntax_oid and oMSyntax)
>>>>> What is dsdb_syntaxes is supposed to be the rule for MS AD.
>>>>>
>>>>>   From your file I found the following syntax
>>>>>
>>>>> 1.3.6.1.4.1.1466.115.121.1.12
>>>>> 1.3.6.1.4.1.1466.115.121.1.24
>>>>> 1.3.6.1.4.1.1466.115.121.1.26
>>>>> 1.3.6.1.4.1.1466.115.121.1.27
>>>>> 1.3.6.1.4.1.1466.115.121.1.40
>>>>> 1.3.6.1.4.1.1466.115.121.1.7
>>>>>
>>>>> Which one is missing in the table ?
>>>>>
>>>>>
>>>>> Matthieu.
>>>>>
>>>> oLschema2ldif fails at converting attribute dhcpOptionsDN which is the
>>>> first with syntax 1.3.6.1.4.1.1466.115.121.1.12
>>> lib/ldb/include/ldb.h
>>> 432:#define LDB_SYNTAX_DN
>>> "1.3.6.1.4.1.1466.115.121.1.12"
>>>
>>> I guess oLschema2ldif needs to be fixed !
>> or source4/dsdb/schema/schema_syntax.c?
> Why ?
>
>
> Except from  schema_syntax.c
>
>                .name                   = "Object(DS-DN)",
>                 .ldap_oid               = LDB_SYNTAX_DN,
>                 .oMSyntax               = 127,
>                 .oMObjectClass          =
> OMOBJECTCLASS("\x2b\x0c\x02\x87\x73\x1c\x00\x85\x4a"),
>                 .attributeSyntax_oid    = "2.5.5.1",
>                 .drsuapi_to_ldb         = dsdb_syntax_DN_drsuapi_to_ldb,
>                 .ldb_to_drsuapi         = dsdb_syntax_DN_ldb_to_drsuapi,
>                 .validate_ldb           = dsdb_syntax_DN_validate_ldb,
>                 .equality               = "distinguishedNameMatch",
>                 .comment                = "Object(DS-DN) == a DN",
>
> So this syntax exists, as I said oLschema2ldif needs to be fixed
> because oMObjectClass is not added and if you want to screw your
> schema not adding this attribute is the way to go.
>
> As a proof of this you should try my attached patch, it turns out that
> oLschema2ldif is sensitive and expect open and closing bracket to have
> a space before them, it won't fix everything as you'll run into
> trouble due to lack of oMObjectClass attribute on object that are with
> the DN syntax, but if should work better.
>
> Matthieu
>
>
>
>
>
Sorry, my fault didn't read it throughly enough.
Thanks for the patch. I've just applied it. Now I' m compiling. Will
come back with the results.

Cheers

Geza