[gs-devel] Ubuntu Gutsy does not print secured PDFs via Acroread and Ghostscript

[Till Kamppeter]

Marcos Woehrmann wrote:
> Till,
> 
> We've found a workaround for the Ghostcript not being able to print
> secured PDFs bug.
> 
> If when calling Ghostcript you replace the ' - ' argument with ' -_ '
> this forces buffered reading of the input stream and allows the file
> to print.
> 
> Here's a diff -c example:
> 
> *** LaserJet-6MP-foomatic.ppd.old       Tue Dec  4 11:04:07 2007
> --- LaserJet-6MP-foomatic.ppd   Tue Dec  4 11:13:52 2007
> ***************
> *** 95,101 ****
>   *FoomaticIDs: HP-LaserJet_6MP hpijs
>   *FoomaticRIPCommandLine: "gs -q -dBATCH -dPARANOIDSAFER -dQUIET -dNOPA&&
>   USE -sDEVICE=ijs -sIjsServer=hpijs%A%B%C -dIjsUseOutputFD%Z -sOutputFi&&
> ! le=- -"
>   *End
> 
>   *FoomaticRIPOption Model: enum CmdLine A 100
> --- 95,101 ----
>   *FoomaticIDs: HP-LaserJet_6MP hpijs
>   *FoomaticRIPCommandLine: "gs -q -dBATCH -dPARANOIDSAFER -dQUIET -dNOPA&&
>   USE -sDEVICE=ijs -sIjsServer=hpijs%A%B%C -dIjsUseOutputFD%Z -sOutputFi&&
> ! le=- -_"
>   *End
> 
>   *FoomaticRIPOption Model: enum CmdLine A 100
> 
> 
> I realize this is not a trivial fix, since there are many .ppd files
> that will need to be changed, but it's the best we can do at the
> moment.

I can do this globally via the foomatic-gswrapper,
but this will only help for foomatic-rip integrated drivers. I could 
also patch pstoraster for CUPS raster drivers, but there is still the 
problem that some drivers bring their own Ghostscript wrappers. In 
addition, what does buffered reading mean? Does it mean that the whole 
job is stored in a temporary file? This could require much disk space on 
big jobs.

Does Ghostscript need random access to the PostScript produces by the 
new Adobe Reader?

    Till