[turba] __type attribute for LDAP

[Adam Tauno Williams]

>>attributetype ( 1.3.6.1.4.1.13040.1.2.4.16
>>        NAME 'turbaMembers'
>>        DESC 'Members of a Turba Group'
>>        EQUALITY caseIgnoreIA5Match
>>        SYNTAX 1.3.6.1.4.1.1466.115.121.1.26{4000} )
>>I made it "{4000}" since that is the size of the members field provided in
>>the PostgreSQL database scripts.
>what's the limitation of LDAP (specifically OpenLDAP)?  Or does it depend on
>what backend you use for OpenLDAP?  

It does depend on the backend.  And with the LDBM backend depends even further 
on the "database" libary used (gdbm, nmdb, etc...).

In OpenLDAP, at least currently, the length parameter is a bit bogus anyway as 
it is not enforced.

>If possible it would be nice to not have any limit, but i'm not sure 
>if that's possible.

With BDB/sleepycat backend the maximum attribute size should be pretty darn 
big, but by default an OpenLDAP thread has something like a 4Mb stack so that 
will limit you before the backend will.

>>Is all of the schema for all the horde projects stored in the central
>>horde.schema file?
>There is some info in the docs direction (the file LDAP) that has some
>free/busy info.  That probably should be added to the horde.schema file - 
>which i'll try do sometime :)