Meeting called to order by Ira McDonald at 12pm US Eastern on 19 July 2016. Minutes taken by Ira McDonald.
Recording of this conference call will be archived at:
http://www.openprinting.org/download/meetingnotes/op-telecons/
OP-Meeting-20160719.mp3
Attendees
Agenda
- Till is working with several printer manufacturers - Participating printer manufacturers didn't send updates this month - No further news/tests/changes/releases
- IPP Everywhere Self-Certification website opened 25 March 2016!
- ONLY available to PWG members
(non-voting PWG individual membership is $50/year)
- Minor issues to be resolved soon
- PWG Candidate Standard - PWG 5100.20-2016
- See 'PWG News' below
- For IPR, PWG members agreement replaced former license agreement
- Published as PWG 5100.20 in February 2016
- PWG IPP Everywhere Test Tools for Self-Certification
- ipptool - IPP Everywhere print protocol - Linux/Mac OS X/Windows
- ippfind - IPP Everywhere Bonjour discovery - Linux/Mac OS X/Windows
- CUPS source code and bug reports are handled on GitHub now
- https://github.com/apple/cups/
- CUPS release v2.2b1 on 14 June 2016 (Mike)
- All CUPS commands now support POSIX options (Issue #4813)
- The scheduler now restarts faster (Issue #4760)
- Improved performance of web interface with large numbers of
jobs (Issue #3819)
- Encrypted printing can now be limited to only trusted
printers and servers (<rdar://problem/25711658>)
- The scheduler now advertises PWG Raster attributes for IPP
Everywhere clients (Issue #4428)
- The scheduler now logs informational messages for jobs at
LogLevel "info" (Issue #4815)
- The scheduler now uses the getgrouplist function when
available (Issue #4611)
- The IPP backend no longer enables compression by default
except for certain raster formats that generally benefit from
it (<rdar://problem/25166952>)
- The scheduler did not handle out-of-disk situations gracefully
(Issue #4742)
- The LPD mini-daemon now detects invalid UTF-8 sequences in
job, document, and user names (Issue #4748)
- The IPP backend now continues on to the next job when the
remote server/printer puts the job on hold (<rdar://problem
/24858548>)
- The scheduler did not cancel multi-document jobs immediately
(<rdar://problem/24854834>)
- The scheduler did not return non-shared printers to local
clients unless they connected to the domain socket
(<rdar://problem/24566996>)
- The scheduler now reads the spool directory if one or more
job cache entries point to deleted jobs (<rdar://problem
/24048846>)
- Added support for disc media sizes (<rdar://problem/20219536>)
- The httpAddrConnect and httpConnect* APIs now try connecting
to multiple addresses in parallel (<rdar://problem/20643153>)
- The cupsd domain socket is no longer world-accessible on OS X
(<rdar://problem/7542560>)
- Interface scripts are no longer supported for security reasons
(<rdar://problem/23135640>)
- Added a new cupsHashData API and support for hashed job
passwords (<rdar://problem/20221502>)
- Localization fixes (<rdar://problem/25292403>,
<rdar://problem/25461517>, Issue #4041, Issue #4796)
- Documentation changes (Issue #4624, Issue #4781)
- Packaging fixes (PR #4832)
- CUPS release v2.1.4 on 14 June 2016 (Mike)
- Fixed reporting of 1284 Device IDs (Issue #3835, PR #3836)
- Fixed printing of multiple files to raw queues (Issue #4782)
- The scheduler did not implement the Hold-New-Jobs opertion
correctly (Issue #4767)
- The ipptool program truncated values at 8k (Issue #4786)
- The ipptool program did not correctly report uriScheme values
in plist output (Issue #4785)
- The cups-lpd mini-daemon incorrectly included the
document-name attribute when creating a job. It should only
be included when sending a job (Issue #4790)
- USB quirk updates (Issue #4778, Issue #4789)
- Documentation update (Issue #4772)
- CUPS Filters principal changes in v1.10.0 release (Till)
- cups-browsed creates queues for IPP network printers no always with
PPD file, as CUPS 2.2.x drops support of interface scripts for
security reasons.
- texttotext fileter replaces former textonly filter for text-only
printers. The new filter was a shell script which did not really work
well, the new filter is written in C and hightly configurable via the
PPD file.
- Replaced all shell-script-based filters (gstopxl, pstopdf, textonly)
by filters written in C, as CUPS changed the permissions of the
queue's PPD files to not world-readable and so the filters have to
read the PPDs via IPP, and so have to be written in a language with
libcups bindings, which is not the case for shell scripts.
- rastertops filter from Pranjal Bohr added.
- bug fixes
- documentation fixes
- CUPS Filters v1.10.1 release plans (Till)
- libcupsfilters: Added missing "#include <cups/ppd.h>" to make
sure that the package builds on all systems (Bug #1366).
- CUPS Filters v1.10.0 release on 15 July 2016 (Till)
- texttotext: Added new filter for text-only printers written
in C, to use the CUPS library to access the print queue's
PPD file, with a lot of options to fit practically all
printer models amd paper sizes, support for CUPS' page
management options, and support for configuring the print
queue and controlling the options by the PPD file. The PPD
is now generated on-the-fly by cupsfilters.drv.
- textonly: Removed the old script-based filter and its PPD
for text-only printers.
- rastertops: Added new filter to turn PWG Raster into
PostScript, in preparation for MuPDF support. Thanks to
Pranjal Bhor for contributing this as part of his Google
Summer of Code project.
- gstoraster, gstopxl, gstopdf, pstopdf: Integrated
functionality of script-based filters pstopdf and gstopxl
into gstoraster filter as script-based filters cannot access
the print queue's PPD file with current CUPS due to change
of PPD file permissions. To make gstoraster always produce
the correct output format (CUPS/PWG Raster, PDF, PCL-XL) it
is called via new wrapper scripts (gstopdf, gstopxl) which
set an environment variable telling the format. The old
filter scripts got removed.
- imagetops, texttops: Do not use $0 in the wrapper scripts,
when CUPS calls filters, it passes the queue name as $0, not
path and name of the called filter.
- cups-browsed: When creating local queues for discovered IPP
network printers always create PPD files and if the
information supplied by the printer via IPP is insufficient
use information from the DNS-SD entry or default values
suitable for most printers. Use System V interface scripts
only on explicit request in cups-browsed.conf. This change
is to address the fact that System V interface script
support is removed from CUPS 2.2.x and later for security
reasons.
- pstopdf: Make the filter only get installed if Ghostscript is
present and also moved its conversion rules into the
cupsfilters-ghostscript.convs file.
- cups-browsed: Fixed crash when trying to get debug logging
both to the terminal and into a file.
- libcupsfilters: Fixed crash of pdftoraster when the color
space is an RGB space (3 colors) with 1 bit color
depth. Here we need to add one bit to the pixels (to get 4
bits per pixel) to align the pixels with the bytes.
- cups-browsed: From cups-browsed.service removed the unneeded
"Wants=cups.service" as we have "Requires=cups.service"
(Debian bug #827455, #827457).
- foomatic-rip: Updated man page for removed page logging
facility.
- pdftops: Also added Dell to the list of manufacturers whose
printers need Poppler's PostScript to work around their
PostScript interpreter bugs (Debian bug #827040).
- Open Printing projects for 2016
- Add muPDF support to CUPS Filters
- Pranjal Bhor (from India)
- Using the lightweight MuPDF PDF interpreter allows for a
smaller and less resource-consuming printing stack on mobile
devices and appliances. Work will consist of adding a rastertops
filter, adding MuPDF support to the existing filters, and
adding a facility to flatten filled forms in PDF files to
static PDF content to assure filled in data will get printed.
- STATUS - 3rd week after mid-term evaluations
- Completed the rastertops filter (will primarily be used to print
on PostScript printers on a MuPDF-based system:
mupdftoraster -> rastertop).
- First version of a mupdftoraster filter which needs testing and
polishing. After that for MuPDF support only the correct
conversion rules are needed.
- Complete IPP discovery support in GTK Dialog
- Kevin Naughton Jr. (from New York)
- Find and list IPP network printers with their options without
need of a running cupsd and/or cups-browsed.
- STATUS - 3rd week after mid-term evaluations
- Also doing well. Currently doing testing work.
- GSoC 2016 Schedule
- 8-19 February - project proposals by mentors
- 29 February - GSoC approves mentoring organizations
- 29 February to 13 March - Students discuss GSoC projects
- 14-25 March - Students apply for GSoC projects
- 25 April - GSoC approved projects/students
- Two OP students accepted
- Pranjal Bhor (from India) - muPDF integration in CUPS Filters
- Kevin Naughton Jr. (from New York) - GTK IPP discovery dialog updates
- 23 May - GSoC coding begins (10% of funds released)
- 20-27 June - GSoC mid-term evaluations (45% of funds released)
- All 11 GSoC students for Linux Foundation passed mid-term evaluations
- 15-22 August - GSoC "pencils down"
- Students fill out completion forms, then Mentors fill out evaluations
- 30 August - GSoC results announced (45% of funds released)
- Impact on distribution-independent drivers from Open Printing
- topic was discussed during PWG/OP Summit in April
- Till is looking into keeping up the LSB at least for Ubuntu 16.04 LTS
- but after that new ways of distribution-indpendent printer driver
packages must be found
- Approaches?
- partially static linking, not completely statically linking
- completely static linking with a replacement for libc
ACTION: Till and Ira draft new content for Open Printing website that
explains the various approaches to distribution-independent drivers
without dependencies on LSB (i.e., advantages and drawbacks) and also
describes the approach of PPD-based drivers (for legacy printers that
support a standard printer language - PDF, PostScript, PCL)
- PWG in Camas, WA (Sharp host) - 23-24 August 2016
- http://www.pwg.org/chair/meeting-info/august-2016-camas.html
- may be changed to a Virtual F2F if not enough attendees plan to travel
- IPP Everywhere Self-Certification - PWG 5100.20-2016
- IPP Everywhere Self-Certification website opened 25 March 2016!
- ONLY available to PWG members
- REQUIRED for PWG IPP Everywhere Logo usage
- REQUIRED for Mopria Alliance
- REQUIRED for WiFi Direct Print Service
- http://ftp.pwg.org/pub/pwg/candidates/cs-ippeveselfcert10-20160219-5100.20.pdf
- https://www.pwg.org/ippeveselfcert
- https://github.com/istopwg/ippeveselfcert/issues
- For IPR, PWG members agreement replaced former license agreement
- Published as PWG 5100.20 in February 2016
- IETF IPP/1.1 Updates (Mike/Ira) - Stable drafts
- https://www.ietf.org/internet-drafts/draft-sweet-rfc2910bis-08.txt
- https://www.ietf.org/internet-drafts/draft-sweet-rfc2911bis-09.txt
- changes for new IETF Proposed Standards
- Alexey Melnikov (IETF ART AD) as AD sponsor on 06/02/16
- Barry Leiba as Document Shepherd on 06/09/16
- Alexey Melnikov sent AD review of RFC2910bis on 06/07/16
- Alexey Melnikov sent AD review of RFC2911bis on 07/17/16
- OPS-DIR review of draft-sweet-rfc2910bis-07 on 07/13/16
- IETF Last Call of RFC2910bis on 06/13/16 to 07/11/16 - complete
- IETF Last Call of RFC2911bis on 07/01/16 to 07/29/16
- Schedule - IESG Telechat on 08/04/16
- IPP System Service (Mike/Ira) - Interim draft
- http://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippsystem10-20160706-rev.pdf
- IPP WG review on 07/11/16
- Schedule - Prototype draft in Q3/Q4 2016
- IPP 3D Printing Extensions - Prototype draft
- http://ftp.pwg.org/pub/pwg/ipp/wd/wd-ipp3d10-20160714-rev.pdf
- IPP WG review on 07/18/16
- Schedule - Stable draft in Q3/Q4 2016
- IPP Finishings 2.1 (Smith) - Interim draft
- http://ftp.pwg.org/pub/pwg/ipp/wd/wd-ippfinishings21-20160509-rev.pdf
- IPP WG review on 06/13/16
- Schedule - PWG Call for Objections in Q3/Q4 2016
- PWG F2F in Camas, WA (Sharp host) - 23-24 August 2016 - http://www.pwg.org/chair/meeting-info/august-2016-camas.html - https://www.surveymonkey.com/r/KBRXD9S (RSVP attendee survey) - may be changed to a Virtual F2F if not enough attendees plan to travel - Trusted Computing Group in Seoul, South Korea - 17-21 October 2016 - http://www.trustedcomputinggroup.org/ - PWG F2F in Lexington, KY (Lexmark host) - 15-16 November 2016 - http://www.pwg.org/chair/meeting-info/meetings.html - Joint PWG/OP Summit in Silicon Valley, CA (Apple Host) - April 2017 - tentative consensus in PWG Steering Committee on 05/26/16
Open Action Items
Next OP US/Europe/Brazil Conference Calls
- Tuesday 9 August 2016, Daytime
- US
9am in San Francisco - US PDT (Pacific Daylight Time)
10am in Colorado - US MDT (Mountain Daylight Time)
11am in Chicago - US CDT (Central Daylight Time)
12pm in New York - US EDT (Eastern Daylight Time)
- Europe
6pm in Berlin - CEST (Central Europe Summer Time)
- Brazil
1pm in Belo Horizonte - BRT (Brasilia Time)
US: +1 641-715-3814 - NEW NUMBER in US started in November 2015
Germany: +49 (0) 221 98203421
Brazil: +55 61 4040-4460
Japan: +81 (0) 3-5050-5070
Participant Access Code: 622393#
(note that local numbers for many other countries are available,
also cellphone apps, VOIP support, etc. - please email Till for
details)
- Note - 7 September is a Brazilian holiday for Till
- Tuesday 14 September 2016, Daytime
- US
9am in San Francisco - US PDT (Pacific Daylight Time)
10am in Colorado - US MDT (Mountain Daylight Time)
11am in Chicago - US CDT (Central Daylight Time)
12pm in New York - US EDT (Eastern Daylight Time)
- Europe
6pm in Berlin - CEST (Central Europe Summer Time)
- Brazil
1pm in Belo Horizonte - BRT (Brasilia Time)
US: +1 641-715-3814 - NEW NUMBER in US started in November 2015
Germany: +49 (0) 221 98203421
Brazil: +55 61 4040-4460
Japan: +81 (0) 3-5050-5070
Participant Access Code: 622393#
(note that local numbers for many other countries are available,
also cellphone apps, VOIP support, etc. - please email Till for
details)
- Note - Daylight Savings Time starts in Brazil on 14 October
- Tuesday 4 October 2016, Daytime