Filter Help

[Paul Conklin]

> Paul Conklin wrote:
>
> >> > I'm trying to write a filter that integrates with a 3rd party app.
> >> > Their requirments are that I call their exe and pass it a page at a
> >> > time.  I can parse the file into pages (they need it in PCL) via
> >> > ghostscript, but where I'm having problems is figuring out how many
> >> > pages there are.
> >> >
> >> > /usr/bin/gs -dQUIET -dPARANOIDSAFER -dNOPAUSE -dBATCH -dNOMEDIAATTRS
> >> > -sDEVICE=ljet4 -sstdout=%stderr
> >> > -sOUTPUTFILE=$TMPDIR/$PRINTER-$$-%03d.pcl $6 for file in `/bin/ls
> >> > $TMPDIR/$PRINTER-$$-*`
> >> >
> >> > D [24/Nov/2011:17:01:53 -0800] [Job 21]
> >> > /usr/lib/cups/filter/troysecurerx: line 12: /bin/ls: cannot execute
> >> > [Permission denied]
> >> >
> >> >
> >> > it looks like I can't ls the files.
> >> >
> >> > Any help would be greatly appreciated.
> >>
> >> Just so you all can see ls and gs have the same permissions
> >>
> >> [root at localhost tmp]# ls -l /bin/ls
> >> -rwxr-xr-x 1 root root 95116 Jul 21 18:17 /bin/ls
> >> [root at localhost tmp]# ls -l /usr/bin/gs
> >> -rwxr-xr-x 1 root root 8424 Sep 13 07:48 /usr/bin/gs
> >
> > So, it gets odder...
> > if I copy ls to /usr/bin instead of just bin, it works (same permissions)
> > /usr/bin and /bin have the same permissions and owner
> > if i create a softlink from /usr/bin/ls to /bin/ls it still fails (same
> > error as above) what is it that the filter isn't co-operating with /bin?
>
> Replace the "-dPARANOIDSAFER" by "-dNOSAFER", as the [PARANOID]SAFER
> prefents Ghostscript to write to files except stdout and stderr.
>
> Helge
>
Thanks Helge for the suggestion, but actually the Ghostcript portion works fine, its the ls that fails