Changes in CUPS v2.1rc1:

• Added support for 3D printers (basic types only, no built-in filters) based on PWG white paper.
• Fixed bugs in the new journald support (Issue #4655, Issue #4658, Issue #4661)
• Fixed domain socket support on Linux (Issue #4679)
• Fixed signal handlers in the dnssd and usb backends (Issue #4671)
• in sections now applies to all operations when used by itself (Issue #4659)
• Configure script changes for systemd support (Issue #4669)
• Updated autoconf sources to use newer form of AC_INIT (Issue #4664)

Changes in CUPS v2.1b1:

• Improved speed of ppdMarkDefaults for complex/large PPDs (rdar:https://problem/15146999)
• The IPP backend now stops sending print data if the printer indicates the job has been aborted or canceled (rdar:https://problem/17837631)
• The IPP backend now sends the job-pages-per-set attribute when printing multiple copy jobs with finishings (rdar:https://problem/16792757)
• The IPP backend now updates the cupsMandatory values when the printer configuration changes (rdar:https://problem/18126570)
• No longer install banner files since third-party banner filters now supply their own (Issue #4518)
• Added support for EXPECT-ALL directive in ipptool test files (Issue #4469)
• Added support for WITH-VALUE-FROM predicate in ipptool test files (Issue #4470)
• The scheduler no longer listens on the loopback interface unless the web interface or printer sharing are enabled (rdar:https://problem/9136448)
• Added a PPD generator for IPP Everywhere printers (Issue #4258)
• Now install "default" versions of more configuration files (rdar:https://problem/19024491)
• The cupstestppd program did not handle "maxsize(nnn)" entries in cupsFilter/cupsFilter2 values (rdar:https://problem/18974858)
• The scheduler now checks the return value of rename() calls (Issue #4589)
• The scheduler now validates ErrorPolicy values in config files (Issue #4591)
• Long cookies caused the web interface to stop working (Issue #4619)
• Added SSLOptions values to allow Diffie-Hellman key exchange and disable TLS/1.0 support.
• Updated the scheduler to support more IPP Everywhere attributes (Issue #4630)
• The scheduler now supports advanced ASL and journald logging when "syslog" output is configured (Issue #4474)
• The scheduler now supports logging to stderr when running in the foreground (Issue #4505)

Changes in CUPS v2.1.3:

• The default password function did not work on some platforms (Issue #4750)
• The scheduler should not exit under memory pressure (rdar:https://problem/23255001)
• The EPL2 and ZPL sample drivers did not properly support the CutMedia option.
• Pending subscriptions would prevent the scheduler from idle exiting (Issue #4754)
• Fixed some issues in ipptool for skipped tests (rdar:https://problem/24137160)
• The "lp -H resume" command did not reset the "job-state-reasons" attribute value (Issue #4752)
• cupsEncodeOptions2 incorrectly handled escaped values (rdar:https://problem/19736672)
• The scheduler did not allow access to resource files (icons, etc.) when the web interface was disabled (Issue #4755)
• Localization fix (Issue #4756)

Changes in CUPS v2.1.2:

• Re-release of CUPS 2.1.1 as CUPS 2.1.2 due to error in tagging of the 2.1.1 release (pulled content from the 2.2.x tree instead)
• Security hardening fixes (rdar:https://problem/23131948, rdar:https://problem/23132108, rdar:https://problem/23132353, rdar:https://problem/23132803, rdar:https://problem/23133230, rdar:https://problem/23133393, rdar:https://problem/23133466, rdar:https://problem/23133833, rdar:https://problem/23133998, rdar:https://problem/23134228, rdar:https://problem/23134299, rdar:https://problem/23134356, rdar:https://problem/23134415, rdar:https://problem/23134506, rdar:https://problem/23135066, rdar:https://problem/23135122, rdar:https://problem/23135207, rdar:https://problem/23144290, rdar:https://problem/23144358, rdar:https://problem/23144461)
• The cupsGetPPD* functions did not work with IPP printers (Issue #4725)
• Some older HP LaserJet printers need a delayed close when printing using the libusb-based USB backend (Issue #4549)
• The libusb-based USB backend did not unload the kernel usblp module if it was preventing the backend from accessing the printer (Issue #4707)
• Current Primera printers were incorrectly reported as Fargo printers (Issue #4708)
• The IPP backend did not always handle jobs getting canceled at the printer (rdar:https://problem/22716820)
• Scheduler logging change (Issue #4728)
• Added USB quirk for Canon MP530 (Issue #4730)
• The scheduler did not deliver job notifications for jobs submitted to classes (Issue #4733)
• Changing the printer-is-shared value for a remote queue did not produce an error (Issue #4738)
• The IPP backend incorrectly included the job-password attribute in Validate-Job requests (rdar:https://problem/23531939)
• Updated localizations (Issue #4709)

Changes in CUPS v2.1.0:

• Fixed more scheduler crash bugs in the new logging code (Issue #4687, Issue #4690)
• The scheduler did not use the ConfigFilePerm setting when copying PPD files or interface scripts attached to a request (Issue #4703)
• Now support new Chinese locale IDs and their correct fallback locales (rdar:https://problem/22086642, rdar:https://problem/22130168)
• "make check" incorrectly reported an expectation of 18 warning messages when 8 were expected (Issue #4684)
• The new PDF file type rule did not work (Issue #4692)
• The scheduler did not update the jobs.cache file when job files were expired (Issue #4706)
• Fixed some configure script issues (Issue #4694, Issue #4695, Issue #4698)
• Documentation updates (Issue #4691, Issue #4693)

Changes in CUPS v2.0rc1:

• Documentation updates (Issue #4464)
• The scheduler now monitors the AC power status on OS X, allowing for "sleep printing" when sharing printers (rdar:https://problem/17325852)
• The scheduler incorrectly called launch_activate_socket multiple times on OS X (rdar:https://problem/17523218)
• The ippserver test program now passes the IPP Everywhere self- certification tests (Issue #4101)
• Relaxed the new OS X filter sandbox slightly (Issue #4471, rdar:https://problem/17483959)
• Dropped the old Epson Stylus Color/Photo sample drivers since they don't work with any current printers and there are free alternatives that produce much better output (rdar:https://problem/18036889)
• Log and configuration files that are not world-readable are again accessible via the web interface (Issue #4461)
• PPD files are now created using the permissions specified by the ConfigFilePerm directive.
• Fixed RPM build issues (Issue #4459)
• Fixed the spinner image and restart page when reconfiguring the scheduler through the web interface (Issue #4475)

Changes in CUPS v2.0b1:

• Added a "--list-filters" option to the cupsfilter command (Issue #4325)
• Added systemd support (Issue #3917)
• Added support for re-sending a job as a raster file if a higher-level format such as PDF fails (rdar:https://problem/15583721)
• Added support for regular expression matching in the MIME type rules (rdar:https://problem/11131245)
• Added support for TLS certificate validation and policy enforcement (Issue #1616)
• Added support for simultaneous XML and test output from ipptool.
• Added support for PAUSE directive in ipptool test files.
• Added support for auto-typing of TIFF files by ipptool (Issue #4418)
• The scheduler now returns completed jobs in the correct newest-to- oldest order (Issue #4396)
• The configure script now supports target-specific tools for pkg-config and others (Issue #4423)
• The ipptool program now supports EXPECT statements for collection member attributes (rdar:https://problem/15355218)
• The ipptool program now supports collection attributes with multiple values (rdar:https://problem/15355124)
• The sample drivers now include all of the installed localizations by default (rdar:https://problem/14756625)
• Adopted Linux man page conventions and updated all man pages (Issue #4372, Issue #4329)
• The scheduler now supports the "first-index" operation attribute for the Get-Jobs operation (Issue #2913)
• Changed the default AccessLogLevel and PageLogFormat to disable the access_log and page_log files by default (rdar:https://problem/16495000)
• cupsRasterInterpretPPD now supports the Orientation header in order to support long-edge feed raster printers (rdar:https://problem/15837926)
• The scheduler now allows run-as-root backends to have group read and execute permissions (Issue #2935)
• The ippFindAttribute and ippFindNextAttribute functions now support hierarchical searches (Issue #4395)
• Dropped OpenSSL support in favor of GNU TLS.
• Dropped "dark wake" support on OS X, which was preventing portables from going to sleep when there was a stuck job. We now use a variation of the CUPS 1.4 sleep support to do a cleaner sleep (rdar:https://problem/14323704)
• Dropped support for AIX, HP-UX, and OSF/1 (aka Digital UNIX)
• Dropped lppasswd and support for Digest authentication in in the scheduler (Issue #4321)
• The cupsGetClasses, cupsGetPrinters, and cupsTempFile functions are no longer supported.
• The scheduler now caches more job history data and limits the number of completed jobs returned by Get-Jobs as needed in order to prevent a denial-of-service on busy servers (Issue #2913)
• The filter/backend sandbox on OS X now defaults to a more strict whitelist (rdar:https://problem/15939788)
• Increased the default idle exit timeout to 60 seconds on OS X (rdar:https://problem/16041820)
• Printer classes were not accessible on OS X (rdar:https://problem/16385643)
• The scheduler now uses to close the default printer definition in printers.conf (Issue #4153)
• Canceling all jobs in the web interface now just cancels the jobs (Issue #1914)

Changes in CUPS v2.0.4:

• Fixed a bug in cupsRasterWritePixels (Issue #4650)
• Fixed redirection in the web interface (Issue #4538)
• The IPP backend did not respond to side-channel requests (Issue #4645)
• The scheduler did not start all pending jobs at once (Issue #4646)
• The web search incorrectly searched time-at-xxx values (Issue #4652)
• Fixed an RPM spec file issue (Issue #4657)
• The scheduler incorrectly started jobs while canceling multiple jobs (Issue #4648)
• Fixed processing of server overrides without port numbers (Issue #4675)
• Documentation changes (Issue #4651, Issue #4674)

Changes in CUPS v2.0.3:

• Security: Fixed CERT VU #810572 exploiting the dynamic linker (Issue #4609)
• Security: The scheduler could hang with malformed gzip data (Issue #4602)
• Restored missing generic printer icon file (Issue #4587)
• Fixed logging of configuration errors to show up as errors (Issue #4582)
• Fixed potential buffer overflows in raster code and filters (Issue #4598, Issue #4599, Issue #4600, Issue #4601)
• Fixed a gzip processing bug (#4602)
• Fixed inside (Issue #4575)
• Fixed lpadmin when both -m and -o are used (Issue #4578)
• The web interface always showed support for 2-sided printing (Issue #4595)
• cupsRasterReadHeader did not fully validate the raster header (Issue #4596)
• The rastertopwg filter did not check for truncated input (Issue #4597)
• The cups-lpd mini-daemon did not check for request parameters (Issue #4603)
• The scheduler could get caught in a busy loop (Issue #4605)
• The sample Epson driver could crash (Issue #4616)
• The IPP backend now correctly monitors jobs (rdar:https://problem/20495955)
• The ppdhtml and ppdpo utilities crashed when the -D option was used before a driver information file (Issue #4627)
• ippfind incorrectly substituted "=port" for service_port.
• The IPP/1.1 test file did not handle the initial print job completing early (Issue #4576)
• Fixed a memory leak in cupsConnectDest (Issue #4634)
• PWG Raster Format output contained invalid ImageBox values (rdar:https://problem/21144309)
• Added Russian translation (Issue #4577)
• Added German translation (Issue #4635)

Changes in CUPS v2.0.2:

• Security: cupsRasterReadPixels buffer overflow with invalid page header and compressed raster data (Issue #4551)
• Command-line programs were not localized on Mac OS X (rdar:https://problem/14546232)
• The scheduler incorrectly cleared the MakeModel string in the printers.conf file after a restart (rdar:https://problem/16827518)
• CUPS did not compile with older versions of GNU TLS (Issue #4527)
• CUPS did not compile without Avahi or mDNSResponder (Issue #4523)
• ippLength() did not return the correct length for IPP_TAG_CONST string values.
• The scheduler incorrectly aborted jobs after a job was restarted (rdar:https://problem/19129387)
• The cups-files.conf file contained the old ServerCertificate/Key directives instead of ServerKeychain.
• Fixed builds when no SSL/TLS library is available, or when explicitly disabled (Issue #4531)
• Fixed an OpenBSD charset transcoding issue.
• Fixed USB printing on OpenBSD (Issue #4525)
• The --without-xinetd configure option did not work (Issue #4542)
• Backends needing to load OS X kernel extensions did not work (rdar:https://problem/19015679)
• Mapping of PPD keywords to IPP keywords did not work if the PPD keyword was already an IPP keyword (rdar:https://problem/19121005)
• cupsGetPPD* sent bad requests (Issue #4567)
• ippserver used the wrong temporary directory on Windows (Issue #4547)
• ippserver did not handle Bonjour registrations properly (Issue #4548)
• The scheduler could crash during shutdown if Avahi was shutdown first (Issue #4550)
• Added a USB quirk rule for Intermec printers (Issue #4553)
• The scheduler did not always log which configuration file had the error (Issue #4559)
• The ippfind and ipptool programs now correctly match hostnames with trailing dots (Issue #4563)
• The ipptool timeout option did not work (Issue #4515)
• Fixed several issues with client.conf, CUPS_SERVER, and the "-h" option of most commands (Issue #4528)
• Another change for OpenBSD (Issue #4526)
• Added Japanese localization (Issue #4524)
• Documentation changes (Issue #4569)