Backends can't look at FINAL_CONTENT_TYPE to determine MIME type of job

[Karl Mikaelsson]

We have a custom cups backend ("thinlocal") that looks at FINAL_CONTENT_TYPE to find out whether the submitted job is application/pdf and if so, take special actions. The PPD for this backend accepts PDF:s directly through this line:

*cupsFilter: "application/pdf 0 -"

However, FINAL_CONTENT_TYPE is always set to printer/thinlocal, so the backend can't possibly determine the input format by looking at the FINAL_CONTENT_TYPE.

This is broken with (at least):
 - Ubuntu 14.04 (cups 1.7.2),
 - Ubuntu 14.10 (cups 1.7.5)
 - Ubuntu 15.04 (cups 2.0.2).

Related bug reports, upstream and elsewhere:
 - https://www.cups.org/str.php?L4494
 - https://bugzilla.redhat.com/show_bug.cgi?id=1010580
 - https://bugzilla.redhat.com/show_bug.cgi?id=1149244

[Karl Mikaelsson (derfian)]

Looks like the offending patch was imported from Red Hat, where it was later reverted since it never worked properly. Might want to take another look at this.

[Karl Mikaelsson (derfian)]

Sorry, I did not intend to change the "information type" field. Not sure what I did to have it changed to be honest.

[gf (gf-interlinks-deactivatedaccount)]

Hello Karl,
Thank you for submitting this bug and reporting a problem with cups. You made this bug report some time ago and Ubuntu and cups have been updated since then.

Could you confirm that this is no longer a problem and that we can close the ticket?
If it is still a problem, are you still interested in finding a solution to this bug?
If you are, could you let us know and, in the current version, could you run the following (only once):
apport-collect 1452193
and upload the updated logs and and any other logs that are relevant for this particular issue.

Thank you again for helping make Ubuntu and cups better.
G

---
Ubuntu Bug Squad volunteer triager
https://wiki.ubuntu.com/BugSquad

[Pierre Ossman (Cendio AB) (ossman)]

I can confirm that this is fixed in (at least) 18.04.

[gf (gf-interlinks-deactivatedaccount)]

Thanks for the update, Pierre. I will close the report now.
Have a great day!
:)
G

Closed per reporter’s feedback.