samba - May 2002 - [BUG] Problem with Case Sensitivity for Usernames between a Samba PDC & Windows

- Compiled Samba version 2.2.4
- Slackware Linux, Kernel 2.4.17
- Windows 2000 Professional, SP2

Here's what I know:

You have username MyNetworkUsername (exactly with case) in /etc/samba/smbpasswd
and /etc/passwd.

You have Samba running as a PDC, with unix password sync enabled. Password Sync
options at default for the most part (passwd program = /usr/bin/passwd %u).

In W2K, you <ctrl-alt-tab> and change the password.  You enter in the
correct tokens, with the username 'MyNetworkUsername', and the password
sync will fail.

Samba debug logs show that:

[2002/05/17 18:24:00, 0] smbd/chgpasswd.c:dochild(128)
  dochild: user name mynetworkusername doesn't exist in the UNIX password
database.

However, when password sync is disabled, the password change WILL be successful.

I figure %u drops case and forces lowercase, passwd is case sensitive and
smbpasswd is not perhaps ?  Not sure if its intentional or not (or a bug) but it
is a problem.

Sorry if this is the wrong list, I could not find a samba-bugs mlist.

Any responses please direct to oldirtychinaman@lycos.com, I am not on the list.

Thank you


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Ol Dirty wrote:
> 
> - Compiled Samba version 2.2.4
> - Slackware Linux, Kernel 2.4.17
> - Windows 2000 Professional, SP2
> 
> Here's what I know:
> 
> You have username MyNetworkUsername (exactly with case) in
/etc/samba/smbpasswd and /etc/passwd.
> 
> You have Samba running as a PDC, with unix password sync enabled. Password
Sync options at default for the most part (passwd program = /usr/bin/passwd %u).
> 
> In W2K, you <ctrl-alt-tab> and change the password.  You enter in the
correct tokens, with the username 'MyNetworkUsername', and the password
sync will fail.
> 
> Samba debug logs show that:
> 
> [2002/05/17 18:24:00, 0] smbd/chgpasswd.c:dochild(128)
>   dochild: user name mynetworkusername doesn't exist in the UNIX
password database.
> 
> However, when password sync is disabled, the password change WILL be
successful.
I think this is fixed in HEAD and samba_3_0.  This is one of really ugly
bits of samba, and I don't think I really want to mess with it in 2.2.

That said, if sombody wants to knock up a patch, another team member
might be able to get it into 2.2.5.

Andrew Bartlett

-- 
Andrew Bartlett                                 abartlet@pcug.org.au
Manager, Authentication Subsystems, Samba Team  abartlet@samba.org
Student Network Administrator, Hawker College   abartlet@hawkerc.net
http://samba.org     http://build.samba.org     http://hawkerc.net