ff60445563
We need to use the longest dnsname match as possible.
If we are the domain samba.example.com and have a trust
to example.com, a routing request for dc.samba.example.com
should return the tdo for samba.example.com instead
of example.com.
I reproduced the problem with the following diff:
> diff --git a/selftest/target/Samba.pm b/selftest/target/Samba.pm
> index 15d7692b5d64..6e9595b784c4 100644
> --- a/selftest/target/Samba.pm
> +++ b/selftest/target/Samba.pm
> @@ -564,7 +564,7 @@ sub realm_to_ip_mappings
> 'samba2000.example.com' => 'dc5',
> 'samba2003.example.com' => 'dc6',
> 'samba2008r2.example.com' => 'dc7',
> - 'addom.samba.example.com' => 'addc',
> + 'addom.samba2008r2.example.com' => 'addc',
> 'addom2.samba.example.com' => 'addcsmb1',
> 'sub.samba.example.com' => 'localsubdc',
> 'chgdcpassword.samba.example.com' => 'chgdcpass',
> diff --git a/selftest/target/Samba4.pm b/selftest/target/Samba4.pm
> index 0e4cf50235c3..6bca0cfd0c89 100755
> --- a/selftest/target/Samba4.pm
> +++ b/selftest/target/Samba4.pm
> @@ -2631,7 +2631,7 @@ sub setup_fl2008r2dc
> return undef;
> }
>
> - $env = $self->setup_trust($env, $ad_dc_vars, "forest", "");
> + $env = $self->setup_trust($env, $ad_dc_vars, "forest", "--skip-validation");
> if (!defined $env) {
> return undef;
> }
> @@ -2843,7 +2843,7 @@ sub _setup_ad_dc
> $server = "addc";
> }
> if (!defined($dom)) {
> - $dom = "addom.samba.example.com";
> + $dom = "addom.samba2008r2.example.com";
> }
> my $env = $self->provision_ad_dc($path, $server, "ADDOMAIN",
> $dom,
and running:
make -j testenv SELFTEST_TESTENV="fl2008r2dc:local"
Inside the testenv:
bin/smbclient //addc.addom.samba2008r2.example.com/netlogon \
-U$TRUST_USERNAME@$TRUST_REALM%$TRUST_PASSWORD \
--use-kerberos=required \
-c 'ls'
It lets the KDC of ADDOM.SAMBA2008R2.EXAMPLE.COM to
generate a (referral) ticket for
krbtgt/SAMBA2008R2.EXAMPLE.COM@ADDOM.SAMBA2008R2.EXAMPLE.COM
instead of
cifs/addc.addom.samba2008r2.example.com@ADDOM.SAMBA2008R2.EXAMPLE.COM
As ADDOM.SAMBA2008R2.EXAMPLE.COM has a forest trust (without msDS-TrustForestTrustInfo)
to SAMBA2008R2.EXAMPLE.COM dsdb_trust_update_best_tln() overwrote the
best match of addom.samba2008r2.example.com with samba2008r2.example.com.
BUG: https://bugzilla.samba.org/show_bug.cgi?id=15778
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz>
Autobuild-User(master): Douglas Bagnall <dbagnall@samba.org>
Autobuild-Date(master): Wed Jan 8 04:14:47 UTC 2025 on atb-devel-224
(cherry picked from commit 56947612452c32bd26f30ad6c9767830fe608d67)
Autobuild-User(v4-21-test): Jule Anger <janger@samba.org>
Autobuild-Date(v4-21-test): Thu Jan 9 11:16:34 UTC 2025 on atb-devel-224
About Samba
Samba is the standard Windows interoperability suite of programs for Linux and Unix. Samba is Free Software licensed under the GNU General Public License and the Samba project is a member of the Software Freedom Conservancy. Since 1992, Samba has provided secure, stable and fast file and print services for all clients using the SMB/CIFS protocol, such as all versions of DOS and Windows, OS/2, Linux and many others. Samba is an important component to seamlessly integrate Linux/Unix Servers and Desktops into Active Directory environments. It can function both as a domain controller or as a regular domain member.
For the AD DC implementation a full HOWTO is provided at: https://wiki.samba.org/index.php/Samba4/HOWTO
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This software is freely distributable under the GNU public license, a copy of which you should have received with this software (in a file called COPYING).
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-
Make your subject short and descriptive. Avoid the words "help" or "Samba" in the subject. The readers of this list already know that a) you need help, and b) you are writing about samba (of course, you may need to distinguish between Samba PDC and other file sharing software). Avoid phrases such as "what is" and "how do i". Some good subject lines might look like "Slow response with Excel files" or "Migrating from Samba PDC to NT PDC".
-
If you include the original message in your reply, trim it so that only the relevant lines, enough to establish context, are included. Chances are (since this is a mailing list) we've already read the original message.
-
Trim irrelevant headers from the original message in your reply. All we need to see is a) From, b) Date, and c) Subject. We don't even really need the Subject, if you haven't changed it. Better yet is to just preface the original message with "On [date] [someone] wrote:".
-
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-
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-
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-
Give as much relevant information as possible such as Samba release number, OS, kernel version, etc...
-
RTFM. Google.
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