Mailinglist Archive: opensuse (3964 mails)

[Bruce Marshall <bmarsh@xxxxxxxxxx>]

On Tuesday 16 November 2004 09:25 am, Johannes Meixner wrote:
> Hello,
>
> On Nov 16 08:30 Bruce Marshall wrote (shortened):
> > 3) Go into /etc/cups  and down at the bottom of:
> > mime.types
> > mime.convs
>
> ...
>
> > application/octet-stream  application/vnd.cups-raw  0  -
> > and uncomment them.
>
> .
> .
> .
>
> > 5) Edit  /etc/dosemu/dosemu.conf    under 'printer settings'
> >
> > $_printer = "dos"
> > $_printer_command = "lp -d dos -o raw"
>
> If you explicitely specify "-o raw" in the print command then there
> is no need to avtivate the fallback to application/octet-stream
> in mime.types and mime.convs.
>
> For example test it with:
>
> head -n 2 /dev/urandom >/tmp/urandom
>
> lp -d <queue> /tmp/urandom
>
> results "client-error-document-format-not-supported" but
>
> lp -d <queue> -o raw /tmp/urandom
>
> works in any case.
>
> If you activate the fallback to application/octet-stream
> in mime.types and mime.convs then any kind of unknown data format
> will be printed in raw mode.
>
> Therefore you can print by accident for example /boot/vmlinuz
> or any proprietary DOS or Windows file (e.g. doc) and because
> it is printed in raw mode the printer will print tons of sheets
> with meaningless characters.
>
> To be safe you should not automatically fall back to raw mode
> but prefer to request raw mode explicitely by "-o raw" only when
> you know that it makes sense.

I'm sure you are quite right....   and in that case, there is no need to 
define a 'dos' printer.   Just make the print command:

$_printer_command = "lp -o raw"