[redhat-lspp] Multilevel Printing

[Matt Anderson]

As Klaus brought up on the call this week there is an issue with
creating the labels for the print job in the postscript interpreter
since then the whole postscript engine would need to be evaluated.

If the user were to run a wrapper program which turned the postscript
into bitmaps this would keep the evaluation from needing to certify the
postscript interpreter.  The wrapper would be responsible for generating
the labels as well.  When available it would be able to use the file's
context, using the session context when the file is stdin.  The wrapper
should be able to pass on or handle most `lpr` command options.

Once the output bitmap is generated this could then be submitted using
the regular CUPS tools to the server which would print it normally.  The
CUPS server should be limited to accepting only these bitmap files via
config file restrictions.  Changes to the CUPS server code should be
avoided if possible.

Did I capture this correctly?  Anyone have any thoughts to add?

-matt