5

How would I build an LDAP query for AD that returns all users in a particular security group whose accounts are not disabled?

I tried

(&(objectClass=person)(!(userAccountControl=ACCOUNTDISABLE)))

but that doesn’t seem to work.

I’m attempting to setup Google Apps Directory Sync and would like it to sync all users that are part of the “Google Apps Users” security group whose accounts are not disabled (or optionally, just suspend accounts in GA if they are disabled in AD).

4 Answers 4

7

Sometimes a set of yes/no values is stored in a single value by setting various bits. You can use a bitmask to check if they are set.

For example, 546 in decimal is the binary value 10 0010 0010 - in decimal, the sum of 512, 32, and 2. (All those numbers are powers of 2, which means they only have one '1' in their binary representation): That means those three yes/no values are set.

According to the userAccountControl docs that means the following values are set:

NORMAL_ACCOUNT (512)
PASSWD_NOTREQD (32)
ACCOUNTDISABLE (2)

However, for example, if you had a user who did not have PASSWD_NOTREQD set (so their userAccountControl value was 512), or one who also had DONT_EXPIRE_PASSWORD (65536) set (meaning their value was 66082), you would not find those users in your query.

What you need to do is use a bitwise AND in order to query the value of only that bit:

10 0010 0010
00 0000 0010
------------
00 0000 0010

If the value for that bit is 1, then that bit is set. It doesn't matter what the other bits are set to, so you are effectively asking if userAccountControl & 2 == 2.

The LDAP syntax for checking a bit using AND is 1.2.840.113556.1.4.803, therefore you can see if the ACCOUNTDISABLE bit is set with (userAccountControl:1.2.840.113556.1.4.803:=2). Adding (!(foo)) around it gives you all the users who are not disabled.

3
  • "(userAccountControl:1.2.840.113556.1.4.803:=2)" is what i ended up using, you can see that in the accepted answer
    – Corey
    Sep 13, 2011 at 1:30
  • 1
    I am aware of that, but I wanted to point out to any future people who might find this page, why sysadmin1138's answer was incomplete.
    – crb
    Sep 15, 2011 at 17:22
  • Kudos for the explanation.
    – DReispt
    Aug 2, 2012 at 21:01
4

Looks like this will work, but it won't pick up nested group members:

(&
    (memberOf=CN=GApsUsers,DN=....)
    (!(userAccountControl=546))
)
6
  • ok, "(&(memberOf=CN=Google Apps Users,DC=bbc,DC=pri)(!(userAccountControl=546)))" works, but it still returns users who have been disabled I have two people in that group, one of them is disabled, but GADS is retrieving 2 user accounts from that LDAP query.
    – Corey
    Aug 9, 2010 at 19:00
  • Ok, did some googleing, and found something that works for the account control “(!(userAccountControl:1.2.840.113556.1.4.803:=2))”
    – Corey
    Aug 9, 2010 at 20:04
  • This is what I ended up going with. (&(memberOf=CN=Google Apps Users,DC=bbc,DC=pri)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))
    – Corey
    Aug 26, 2010 at 13:32
  • You should do a bitwise AND on bit 2 for 'account disabled', rather than checking the userAccountControl value in total; other bits might be set.
    – crb
    Sep 6, 2011 at 18:19
  • @crb - What? explain further please?
    – Corey
    Sep 9, 2011 at 16:22
4

This works!

(&(memberOf=CN=Google Apps Users,DC=bbc,DC=pri)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))
1
  • I had to delete the extra set of parenthesis to get this to work, as Tony Roth suggested below. May 22, 2012 at 18:45
1

close but

(&(objectClass=person)(!(userAccountControl=ACCOUNTDISABLE)))

should be

(&(objectClass=person)(!userAccountControl=ACCOUNTDISABLE))

please note that I can't really test this from where I'm at!

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.