v2.4.0

CUPS 2.4.0 is the latest stable OpenPrinting CUPS release. Among the changes from beta and release candidate the stable release adds two new configuration options for optimizing cupsd setup on servers and several other changes.

The detailed list of changes:

• Added configure option --with-idle-exit-timeout (Issue #294)$
• Added --with-systemd-timeoutstartsec configure option (Issue #298)$
• DigestOptions now are applied for MD5 Digest authentication defined$
  by RFC 2069 as well (Issue #287)$
• Fixed compilation on Solaris (Issue #293)$
• Fixed and improved German translations (Issue #296, Issue #297)

Enjoy! :)

v2.4rc1

CUPS 2.4rc1 is a release candidate for OpenPrinting CUPS 2.4.0, which adds two enhancements before the stable release.

The detailed list of changes:

• Added warning and debug messages when loading printers
  if the queue is raw or with driver (Issue #286)
• Compilation now uses -fstack-protector-strong if available (Issue #285)

Enjoy!

v2.4b1

CUPS 2.4b1 is the beta release for OpenPrinting CUPS 2.4 which contains several new features such as basic OAuth support, support for AirPrint and Mopria clients and support for running CUPS as a snap, several deprecations (Kerberos, cups-config), removals of old deprecated directives, and many bug fixes.

The detailed list of changes:

• Added support for CUPS running in a Snapcraft snap.
• Added basic OAuth 2.0 client support (Issue #100)
• Added support for AirPrint and Mopria clients (Issue #105)
• Added configure support for specifying systemd dependencies in the CUPS
  service file (Issue #144)
• Added several features and improvements to ipptool (Issue #153)
• Added a JSON output mode for ipptool.
• The ipptool command now correctly reports an error when a test file cannot
  be found.
• CUPS library now uses thread safe getpwnam_r and getpwuid_r functions (Issue #274)
• Fixed Kerberos authentication for the web interface (Issue #19)
• The ZPL sample driver now supports more "standard" label sizes (Issue #70)
• Fixed reporting of printer instances when enumerating and when no options are
  set for the main instance (Issue #71)
• Reverted USB read limit enforcement change from CUPS 2.2.12 (Issue #72)
• The IPP backend did not return the correct status code when a job was canceled
  at the printer/server (Issue #74)
• The testlang unit test program now loops over all of the available locales
  by default (Issue #85)
• The cupsfilter command now shows error messages when options are used
  incorrectly (Issue #88)
• The PPD functions now treat boolean values as case-insensitive (Issue #106)
• Temporary queue names no longer end with an underscore (Issue #110)
• The USB backend now runs as root (Issue #121)
• Added pkg-config file for libcups (Issue #122)
• Fixed a PPD memory leak caused by emulator definitions (Issue #124)
• Fixed a DISPLAY bug in ipptool (Issue #139)
• The scheduler now includes the [Job N] prefix for job log messages, even
  when using syslog logging (Issue #154)
• Added support for locales using the GB18030 character set (Issue #159)
• httpReconnect2 did not reset the socket file descriptor when the TLS
  negotiation failed (Apple #5907)
• httpUpdate did not reset the socket file descriptor when the TLS
  negotiation failed (Apple #5915)
• The IPP backend now retries Validate-Job requests (Issue #132)
• Now show better error messages when a driver interface program fails to
  provide a PPD file (Issue #148)
• Added dark mode support to the CUPS web interface (Issue #152)
• Added a workaround for Solaris in httpAddrConnect2 (Issue #156)
• Fixed an interaction between --remote-admin and --remote-any for the
  cupsctl command (Issue #158)
• Now use a 60 second timeout for reading USB backchannel data (Issue #160)
• The USB backend now tries harder to find a serial number (Issue #170)
• Fixed @IF(name) handling in cupsd.conf (Apple #5918)
• Fixed documentation and added examples for CUPS' limited CGI support
  (Apple #5940)
• Fixed the lpc command prompt (Apple #5946)
• Now always pass "localhost" in the Host: header when talking over a domain
  socket or the loopback interface (Issue #185)
• Fixed a job history update issue in the scheduler (Issue #187)
• Fixed job-pages-per-set value for duplex print jobs.
• Fixed an edge case in ippReadIO to make sure that only complete attributes
  and values are retained on an error (Issue #195)
• Hardened ippReadIO to prevent invalid IPP messages from being propagated
  (Issue #195, Issue #196)
• The scheduler now supports the "everywhere" model directly (Issue #201)
• Fixed some IPP Everywhere option mapping problems (Issue #238)
• Fixed support for "job-hold-until" with the Restart-Job operation (Issue #250)
• Fixed the default color/grayscale presets for IPP Everywhere PPDs (Issue #262)
• Fixed support for the 'offline-report' state for all USB backends (Issue #264)
• Documentation fixes (Issue #92, Issue #163, Issue #177, Issue #184)
• Localization updates (Issue #123, Issue #129, Issue #134, Issue #146,
  Issue #164)
• USB quirk updates (Issue #192, Issue #270, Apple #5766, Apple #5838,
  Apple #5843, Apple #5867)
• Web interface updates (Issue #142, Issue #218)
• The ippeveprinter tool now automatically uses an available port.
• Fixed several Windows TLS and hashing issues.
• Deprecated cups-config (Issue #97)
• Deprecated Kerberos (AuthType Negotiate) authentication (Issue #98)
• Removed support for the (long deprecated and unused) FontPath,
  ListenBackLog, LPDConfigFile, KeepAliveTimeout, RIPCache, and
  SMBConfigFile directives in cupsd.conf and cups-files.conf.
• Stubbed out deprecated httpMD5 functions.
• Add test for undefined page ranges during printing.

Enjoy!

v2.3.3op2

CUPS 2.3.3op2 is the latest OpenPrinting CUPS security and bug fix
release. Changes include:

• Security: Fixed a buffer (read) overflow in the ippReadIO function
  (CVE-2020-10001)
• Clarified the documentation for the "Listen" directive (Issue #53)
• Fixed duplicate ColorModel entries for AirPrint printers (Issue 59)
• Fixed directory/permission defaults for Debian kfreebsd-based systems
  (Issue #60, Issue #61)
• Fixed crash bug in ppdOpen (Issue #64, Issue #78)
• Fixed regression in snprintf emulation function (Issue #67)
• The scheduler's systemd service file now waits for the nslcd service to start
  (Issue #69)
• The libusb-based USB backend now uses a simpler read timer implementation to
  avoid a regression in a previous change (Issue #72)
• The PPD caching code now only tracks the APPrinterIconPath value on macOS
  (Issue #73)
• Fixed segfault in help.cgi when searching in man pages (Issue #81)
• Root certificates were incorrectly stored in "~/.cups/ssl".

Enjoy!

OpenPrinting CUPS 2.3.3op1

CUPS 2.3.3op1 is the first OpenPrinting CUPS release which fixes many bugs,
incorporates common Linux distribution changes, and provides several IPP
Everywhere improvements. Changes include:

• The automated test suite can now be activated using make test for
  consistency with other projects and CI environments - the old make check
  continues to work as well, and the previous test server behavior can be
  accessed by running make testserver.
• ippeveprinter now supports multiple icons and strings files.
• ippeveprinter now uses the system's FQDN with Avahi.
• ippeveprinter now supports Get-Printer-Attributes on "/".
• ippeveprinter now uses a deterministic "printer-uuid" value.
• ippeveprinter now uses system sounds on macOS for Identify-Printer.
• Updated ippfind to look for files in "~/Desktop" on Windows.
• Updated ippfind to honor SKIP-XXX directives with PAUSE.
• Updated IPP Everywhere support to work around printers that only advertise
  color raster support but really also support grayscale (Issue #1)
• ipptool now supports DNS-SD URIs like ipps://My%20Printer._ipps._tcp.local
  (Issue #5)
• The scheduler now allows root backends to have world read permissions but not
  world execute permissions (Issue #21)
• Failures to bind IPv6 listener sockets no longer cause errors if IPv6 is
  disabled on the host (Issue #25)
• The SNMP backend now supports the HP and Ricoh vendor MIBs (Issue #28)
• The scheduler no longer includes a timestamp in files it writes (Issue #29)
• The systemd service names are now "cups.service" and "cups-lpd.service"
  (Issue #30, Issue #31)
• The scheduler no longer adds the local hostname to the ServerAlias list
  (Issue #32)
• Added LogFileGroup directive in "cups-files.conf" to control the group
  owner of log files (Issue #34)
• Added --with-max-log-size configure option (Issue #35)
• Added --enable-sync-on-close configure option (Issue #37)
• Added --with-error-policy configure option (Issue #38)
• IPP Everywhere PPDs could have an "unknown" default InputSlot (Issue #44)
• The httpAddrListen function now uses a listen backlog of 128.
• Added USB quirks (Apple issue #5789, #5823, #5831)
• Fixed IPP Everywhere v1.1 conformance issues in ippeveprinter.
• Fixed DNS-SD name collision support in ippeveprinter.
• Fixed compiler and code analyzer warnings.
• Fixed TLS support on Windows.
• Fixed ippfind sub-type searches with Avahi.
• Fixed the default hostname used by ippeveprinter on macOS.
• Fixed resolution of local IPP-USB printers with Avahi.
• Fixed coverity issues (Issue #2)
• Fixed httpAddrConnect issues (Issue #3)
• Fixed web interface device URI issue (Issue #4)
• Fixed lp/lpr "printer/class not found" error reporting (Issue #6)
• Fixed xinetd support for LPD clients (Issue #7)
• Fixed libtool build issue (Issue #11)
• Fixed a memory leak in the scheduler (Issue #12)
• Fixed a potential integer overflow in the PPD hashing code (Issue #13)
• Fixed output-bin and print-quality handling issues (Issue #18)
• Fixed PPD options getting mapped to odd IPP values like "tray---4" (Issue #23)
• Fixed remote access to the cupsd.conf and log files (Issue #24)
• Fixed the automated test suite when running in certain build/CI environments
  (Issue #25)
• Fixed a logging regression caused by a previous change for Apple issue #5604
  (Issue #25)
• Fixed fax phone number handling with GNOME (Issue #40)
• Fixed potential rounding error in rastertopwg filter (Issue #41)
• Fixed the "uri-security-supported" value from the scheduler (Issue #42)
• Fixed IPP backend crash bug with "printer-alert" values (Issue #43)
• Removed old Solaris inetconv(1m) reference in cups-lpd man page (Issue #46)
• Fixed default options that incorrectly use the "custom" prefix (Issue #48)
• Fixed a memory leak when resolving DNS-SD URIs (Issue #49)
• Fixed systemd status reporting by adopting the notify interface (Issue #51)
• Fixed crash in rastertopwg (Apple issue #5773)
• Fixed cupsManualCopies values in IPP Everywhere PPDs (Apple issue #5807)

Enjoy!