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gnupg/doc/ad-query-hints.org
Werner Koch ee27ac18ea
doc: Add some hints for AD queries.
--

This is repo only.
2023-08-24 11:28:12 +02:00

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* Examples
** List the DNs of all users in our QAUsers group
: ad_query --subst --attr=dn
: ^OU=QAUsers,$domain&sub&(&(objectcategory=person)(objectclass=user))
** List the DN using the user's mail address
: ad_query --subst --attr=dn,userAccountControl
: (&(objectcategory=person)(objectclass=user)
: (|(userPrincipalName=dd9jn@w32demo.g10code.de)
: (mail=dd9jn@w32demo.g10code.de)))
After that the userControlFlags should be checked - see below for
the bit flags. For a non-disabled user use:
: if ((userControlFlags & 0x0212) == 0x200))
: use_this_user()
* Useful attributes
** userAccountControl
These are bit flags. For details see
https://learn.microsoft.com/en-us/windows/win32/api/iads/ne-iads-ads_user_flag_enum
- 0x00000002 :: ADS_UF_ACCOUNTDISABLE, the account is disabled.
- 0x00000010 :: ADS_UF_LOCKOUT, the account is temporarily locked out.
- 0x00000100 :: ADS_UF_TEMP_DUPLICATE_ACCOUNT, this is an account for
a user whose primary account is in another domain.
- 0x00000200 :: ADS_UF_NORMAL_ACCOUNT, the default account type that
represents a typical user.
- 0x00000800 :: ADS_UF_INTERDOMAIN_TRUST_ACCOUNT, the account for a
domain-to-domain trust.
- 0x00001000 :: ADS_UF_WORKSTATION_ACCOUNT, the computer account for a
computer that is a member of this domain.
- 0x00002000 :: ADS_UF_SERVER_TRUST_ACCOUNT, the computer account for
a DC.
- 0x00010000 :: ADS_UF_DONT_EXPIRE_PASSWD, the password will not expire.
- 0x04000000 :: ADS_UF_PARTIAL_SECRETS_ACCOUNT, the computer account
for an RODC.
For example to select only user accounts which are not disabled or
are locked out could naivly be used:
: (userAccountControl:1.2.840.113556.1.4.803:=512)
1.2.840.113556.1.4.803 is bit wise AND, 1.2.840.113556.1.4.804 is bit
wise OR. However, because a mask can't be specified, this is not really
useful. Thus the above needs to be replaced by explicit checks; i.e.
: (&(userAccountControl:1.2.840.113556.1.4.804:=512)
: (!(userAccountControl:1.2.840.113556.1.4.804:=2))
: (!(userAccountControl:1.2.840.113556.1.4.804:=16)))
I'd suggest to also add explict checks on the returned data.
* Resources
- https://qa.social.technet.microsoft.com/wiki/contents/articles/5392.active-directory-ldap-syntax-filters.aspx