Problem with LDAP module in 2.0.3 -- Ldap-UserDn unavailable

Jason Alderfer jha2 at emu.edu
Wed Apr 9 21:11:18 CEST 2008


I'm testing upgrading from 1.1.7 to 2.0.3 and have run into a problem with
the LDAP module.  The problem appears in 2 places.  First, I'm using the
--with-edir option so I have

password_attribute = nspmPassword

and

edir_account_policy_check = yes

set.  However, in 2.0.3, when I set "edir_account_policy_check = yes", I
get this error:

+- entering group post-auth
rlm_ldap: User's FQDN not in config items list.
++[ldap] returns fail
  PEAP: Tunneled authentication was rejected.
  rlm_eap_peap: FAILURE

If I don't set edir_account_policy_check, then authentication is
successful, but the second problem shows up.  A little background:

In 1.1.7 I'm setting VLANs via the 'users' file like this:

DEFAULT Ldap-UserDn =~ "ou=is,ou=n,o=emu"
        Tunnel-Type = "VLAN",
        Tunnel-Medium-Type = "IEEE-802",
        Tunnel-Private-Group-Id = 3

and I've tried this in 2.0.3, but I've also tried unlang

if (Ldap-UserDn =~ /ou=is,ou=n,o=emu/i) {
        update reply {
                Tunnel-Type := "VLAN"
                Tunnel-Medium-Type := "IEEE-802"
                Tunnel-Private-Group-Id := 3
        }
}

Neither of these work in 2.0.3.  The VLAN does not get set.  Files returns
noop, and unlang shows in debug output

++? if (Ldap-UserDn =~ /ou=is,ou=n,o=emu/i)
    (Attribute Ldap-UserDn was not found)


I did some digging and I think I know why this is.  In rlm_ldap.c
beginning at line 1306 is

/*
 * Adding new attribute containing DN for LDAP object associated with
 * given username
 */
pairadd(check_pairs, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));

However, in 1.1.7 the code is

pairadd(&request->packet->vps, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));

If I add this line to 2.0.3 just after the existing pairadd line and
recompile, then everything just works -- edir policy check works and I can
set VLANs using files module or unlang.

Is this a bug in 2.0.3 or am I missing something in my new config file
that would make the Ldap-UserDn available?

Jason




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