Re: Help with modules

[Howard Chu <hyc@symas.com>]

Herb Hrowal wrote:

> I'm new to OpenLDAP and have some questions on "plug-ins".
>
> Is there any plug-in api other than the backend support?
>  
Yes, several in fact. The main one of interest for your question is 
called an "overlay."

> Is it possible for a backend to modify a request before it is sent to
> other backend modules?
>  
Yes, using an overlay.

> Is there any way to insert a shim between the frontend and the various
> backends we use other than to modify OpenLDAP.
>  
Yes, that's what overlays are.

> If a shim is possible, can it specify which backend handles the request?
>  
Not quite. Instead, you specify which overlays to use on a particular 
backend.

> Is there any good documentation on writing backends?
>  
Everything you need to know is in the source tree. The file 
servers/slapd/overlays/slapover.txt may help you.

> Any help would be greatly appreciated.
>
> Herb
>
>
>  


--
 -- Howard Chu
 Chief Architect, Symas Corp.       Director, Highland Sun
 http://www.symas.com               http://highlandsun.com/hyc
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