Extending LDB for Extended DNs

[Stefan (metze) Metzmacher]

Andrew Bartlett schrieb:
> On Tue, 2008-10-28 at 08:13 +0100, Stefan (metze) Metzmacher wrote:
>> Andrew Bartlett schrieb:
>>> Simo,
>>>
>>> Per our discussion on IRC last night, I wanted to clarify with you want
>>> I would like to do to DN support in Samba4, and how I would like to
>>> extend LDB to help with this.
>>>
>>> The problem of extended DNs is partially indicated by:
>>>
>>> http://msdn.microsoft.com/en-us/library/cc200561.aspx
>>>
>>> Firstly, I would like to try and support sending 'extended dns' to
>>> clients, as required by the extended DN control.  
>>>
>>> To do this properly, we need to do better than extended_dn.c does at the
>>> moment - it relies on the fact that if you stuff something into
>>> ldb_dn_new(), then it will appear in the DN - the DN structure does not
>>> contain the parsed DN.
>>>
>>> Secondly, I would like to accept the alternate DN forms 
>>>
>>> http://msdn.microsoft.com/en-us/library/cc200459.aspx
>>>
>>> My hope is that these should be parsed as 'normal' DNs as much as
>>> possible - then canonicalised into a form we can actually look up (or
>>> used directly if possible). 
> 
>>> My plan is to extend the ldb DN parser's existing 'TODO' handling of
>>> <SID= and <GUID= to be a general set of key-value pairs, much like the
>>> DN components are.  Samba4 can then register a custom handler to parse
>>> and print these attributes (with 'string as is' being the default).
>>> This will be much like we handle all other 'samba special' types in
>>> LDB. 
>> I think that's the correct way of doing it...
> 
>> I thing that will be a big step forward (but please remember that next
>> thing is the handling of per attribute replication meta data for linked
>> attributes:-)
> 
> Great.  I've been working on this hard for the past week or so.  See
> http://gitweb.samba.org/?p=abartlet/samba.git/.git;a=shortlog for the
> current work in progress.
> 
> I'm currently working on the comprehensive testsuite for DN behaviours,
> particularly with the extended DNs.
> 
> I would appreciate any comments or feedback,

I think
in ldb_ildap() we should use extended type 0, as w2k doesn't support type 1.

ldb_dn_extended_linearized(msg, req->op.search.base, 1)

metze

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