Hi there again,
2 issues with CUPS/X2GO printing...
1st issue:
==========
when mounting home directories via NFS (NFS3 with root_squash, NFS4
with any kind of Kerberos security feature) you cannot copy a file as
superuser ,,root'' to a user's HOME (x2goprint is called via
sudo(NOPASSWD) in the cups-x2go backend).
The logical error is in the last stanza of the x2goprint file...
(quoted and marked below).
Maybe there is already a solution for this. If not, let me know and I
propose a suggestion (and test it with krb5p security enabled servers).
<quote>
my $mounts=`sudo x2gopgwrapper getmounts $session`;
if( $mounts=~m/$spooldir/)
{
vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
move ("$printdir/$file", "$homedir/.x2go/C-$session/$file") or
die "$!: Can't rename $file to $homedir/.x2go/C-$session/$file";
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
chown $uid, $gid, "$homedir/.x2go/C-$session/$file";
system ("su $user -c \"mv $homedir/.x2go/C-$session/$file $spooldir\"");
open (RFILE,">$homedir/.x2go/C-$session/$file.ready");
print RFILE "$file\n$title";
close (RFILE);
chown $uid, $gid, "$homedir/.x2go/C-$session/$file.ready";
system ("su $user -c \"mv $homedir/.x2go/C-$session/$file.ready
$spooldir\"");
}
</quote>
2nd issue:
==========
There is als some inconsistency between cups-x2go and x2goprint:
cups-x2go:
----------
<quote src="/usr/lib/cups/backend/cups-x2go">
$tempFile = "$ENV{TMPDIR}/$jid-$uid-cupsjob$$";
</quote>
BUT: $TMPDIR is not set, that's why first instances of CUPS's spool
jobs appear in the server's root directory "/".
Most important: by design $tempFile is a full path!!!
x2goprint:
----------
$tempFile is picked up in x2goprint as $file
<quote src="/usr/bin/x2goprint">
my ($user, $session, $file, $titleFile)=...@argv;
</quote>
However, in x2goprint $file is interpreted as a filename without path...
But maybe this problem als has been already addressed...
I also get loads of stray job files on my x2goserver, especially if
the print mechanism is not working by some reason (e.g. broken reverse
ssh, because i was not able to configure my client properly... ;-) )
Greets,
Mike
--
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