[Samba] CUPS username case wrong from Windows 98 client

I have a problem getting Windows 98 clients printing to CUPS printers
where I have the printer access allowed/denied by username. It appears
that samba is passing the username in uppercase to CUPS as the owner of
the printjob and then CUPS does not recognise that username and rejects
the job. It all works under Windows NT/XP.

I am running samba 3.0.20 and cups 1.1.23. The smb.conf file is below

# Samba config file created using SWAT
# from 131.227.115.22 (131.227.115.22)
# Date: 2005/05/12 12:36:36

# Global parameters
[global]
display charset = ASCII
workgroup = SEPS
netbios name = PHSMB
netbios aliases = moria
update encrypted = Yes
smb passwd file = /etc/samba/smbpasswd
private dir = /etc/samba
passdb backend = ldapsam:ldap://eldar
username map = /etc/samba/smbusers
log level = 0
log file = /var/log/samba/log.%m
max log size = 1000
name resolve order = wins lmhosts bcast host
time server = Yes
lpq cache time = 60
max open files = 1000
socket options = TCP_NODELAY SO_SNDBUF=8192 SO_RCVBUF=8192
logon script = logon.cmd
logon path = \\phsmb\homes\.winprofile
logon drive = H:
logon home = \\phsmb\homes
domain logons = Yes
domain master = No
wins server = 131.227.76.25
ldap admin dn = cn=Manager,dc=eps,dc=surrey,dc=ac,dc=uk
ldap delete dn = Yes
ldap group suffix = ou=Groups
ldap idmap suffix = dc=eps,dc=surrey,dc=ac,dc=uk
ldap machine suffix = ou=Computers
ldap suffix = dc=eps,dc=surrey,dc=ac,dc=uk
ldap ssl = no
ldap user suffix = ou=People
lock directory = /var/cache/samba
pid directory = /var/run
utmp directory = /var/run
wtmp directory = /var/log
utmp = Yes
template shell = /usr/local/bin/tcsh
printing = cups
printer admin = phs1dm, phs2jd, @scs
hosts allow = 131.227.

[netlogon]
path = /usr/local/samba/netlogon
write list = root, phs1dm

[homes]
comment = Home Directories
read only = No
create mask = 0740
directory mask = 0751
browseable = No

[printers]
comment = All Printers
path = /tmp
create mask = 0700
printable = Yes
browseable = No

And here is the relevant printers.conf entry from cups

<DefaultPrinter wells>
Info Physics Computer support printer
Location 1BC04
DeviceURI cupspykota:socket://wells:9100
State Idle
Accepting Yes
JobSheets none none
QuotaPeriod 0
PageLimit 0
KLimit 0
AllowUser phs1dm
</Printer>

This is the relevant entries from the cups error log

D [09/Sep/2005:10:40:13 +0000] [Job 1] printer-uri =
"ipp://marvin.ph.surrey.ac.uk:631/printers/wells"
D [09/Sep/2005:10:40:13 +0000] [Job 1] requesting-user-name = "PHS1DM"
D [09/Sep/2005:10:40:13 +0000] [Job 1] job-name = "smbprn.00000001
Printer Test Page"
E [09/Sep/2005:10:40:13 +0000] [Job 1] Print file was not accepted
(client-error-not-possible)!
E [09/Sep/2005:10:40:13 +0000] PID 27866 stopped with status 1!

Here samba is converting the username as passed from Win 98 in upper
case to lower case for authentication but it still passes the upper case
username to CUPS. I've turned the debug level up to 20 but I still can't
find any log message showing where that is.

[2005/09/09 10:39:52, 2] auth/auth.c:(307)
check_ntlm_password: authentication for user [PHS1DM] -> [PHS1DM] ->
[phs1dm] succeeded

--
--------------------------------------------------------------------
David Munro email: d.munro@surrey.ac.uk
Department of Physics phone: 01483 689415 (direct line)
University of Surrey fax: 01483 686781
Guildford, Surrey, UK, GU2 7XH
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