Query AD Group Membership Recursively Through SQL

Question

Background

I\'m creating some SQL to assist with security auditing; this will take security info from various systems databases and from Active Dire

Answer 1

Though this is an old post, Google still likes to toss it to the top of the results, so as I struggled with this same problem a great deal, I wanted to post my findings/solution, with credit to Riverway for getting me on the right track.

Create a Stored Procedure:

CREATE PROCEDURE [dbo].[GetLdapUserGroups]
    (
    @LdapUsername NVARCHAR(max)
    )
AS
BEGIN
DECLARE @Query NVARCHAR(max), @Path NVARCHAR(max)

SET @Query = '
    SELECT @Path = distinguishedName
    FROM OPENQUERY(ADSI, ''
        SELECT distinguishedName 
        FROM ''''LDAP://DC=DOMAIN,DC=COM''''
        WHERE 
            objectClass = ''''user'''' AND
            sAMAccountName = ''''' + @LdapUsername + '''''
    '')
'

EXEC SP_EXECUTESQL @Query, N'@Path NVARCHAR(max) OUTPUT', @Path = @Path OUTPUT 

  SET @Query = '
    SELECT cn AS [LdapGroup]
    FROM OPENQUERY (ADSI, '';
    (&(objectClass=group)(member:1.2.840.113556.1.4.1941:= ' + @Path + '));
    cn, adspath;subtree'')
    ORDER BY cn;
'

EXEC SP_EXECUTESQL @Query
END

Then, call your SP by just passing the username:

DECLARE @UserGroup table (LdapGroup nvarchar(max))
INSERT INTO @UserGroup exec Datamart.dbo.GetLdapUserGroups @LdapUser

I'm then using a hash table to correctly match the AD group to the SQL data and what the end user should see.

DECLARE @RptPermissions table (ldapGroup nvarchar(max),scholarshipCode nvarchar(50),gender nvarchar(2))
INSERT INTO @RptPermissions VALUES('EMP_Enrollment_Admissions','ALL','MF')

In my case, I'm using this to pull the SSRS user variable and pass it into the query for selecting the records based on AD group membership.

;WITH CTE_Permissions AS
(
    SELECT
        p.scholarshipCode
        ,p.gender
    FROM @UserGroup AS g
    JOIN @RptPermissions AS p ON
        g.ldapGroup = p.ldapGroup
)

... Later in the query

JOIN CTE_Permissions AS p ON
         s.SCHOLARSHIP_ID = p.scholarshipCode
         OR p.scholarshipCode = 'ALL'

Hope this helps.