From: dave@...
Date: 2007-08-22T23:58:25+09:00
Subject: Re: ruby-ldap and paged results on windows


On 8/21/07, Dave King <dave / davewking.com> wrote:
>>
>> Hi-
>>     I'm trying to get paged results to work with ruby-ldap against
>> Active Directory in Windows.  I compiled ruby-ldap 0.9.7 following the
>> directions on
>> http://www.turnofthecrank.com/2006/09/11/ruby-ldap-and-win32/
>>
>> Then I tried to run this code I found.  The error I get is that ruby
>> can't find the constant LDAP_CONTROL_PAGEDRESULTS and if I put
>> LDAP.constants it's not listed.  Any ideas?



>The literal value of the control is "1.2.840.113556.1.4.319"
>You might try defining that in your code and see if it works. (If you have
>sharp eyes you'll notice that the enterprise number in the OID belongs to
>Microsoft. Paged controls started life as a hack to make Active Directory
>performance slightly less horrible.)

>If you're still having trouble, try the Net::LDAP library. It supports
>paged
>results transparently.


Thanks for the tip.  I tried setting the value of the control, then I got
an error that said
uninitialized constant LDAP_OPT_SERVER_CONTROLS (NameError)
Somewhere I found that this should be 0x12 (which may be wrong) so I set
it to that and got this error
`set_option': the set_option() function is unimplemented on this machine
(NotImplementedError)

So it looks like my problems may be bigger than undefined constants.  I've
also been looking at Net::LDAP as well, the only problem I've found there
is that it doesn't parse my ldap filters right so I have to rewrite them
in the Net::LDAP way.  For example this filter works fine in ruby-ldap
(&(samaccounttype=805306368)(|(lastLogonTimestamp<=128231111837280000)(&(!(lastLogonTimestamp=*)(whenCreated<=20070522000000.0Z)))))

but in Net::LDAP it gives me this error

c:/ruby/lib/ruby/gems/1.8/gems/ruby-net-ldap-0.0.4/lib/net/ldap/filter.rb:302:in
`initialize': invalid filter syntax (Net::LDAP::LdapError)

when i run it like this

filter =
Net::LDAP::Filter.construct("(&(samaccounttype=805306368)(|(lastLogonTimestamp<=128231111837280000)(&(!(lastLogonTimestamp=*)(whenCreated<=20070522000000.0Z)))))")

I can rewrite my stuff to use the Net::LDAP filters, but it would be nice
to just use the ldap filter string.