3.24.1

Highlights

• Add a new template function called $(format-flat-json), which generates
  flattened json output. This is useful for destinations, where the json
  parsing does not handle nested json format. (#2890)
• Add ISO 8601 compliant week numbering. Use it with the ${ISOWEEK} macro
  and and all its variants: S_ISOWEEK, R_ISOWEEK and C_ISOWEEK. (#2878)
• Add add-contextual-data() glob selector. It matches the message with shell
  style globbing. Enable it by setting selector(glob("$my_template") in the
  add-contextual-data() block. (#2936)
• Add new rewrite operations to manipulate the timezone portion of timestamps have
  been added. set-timezone() to set the timezone value to a specific value,
  fix-timezone() to fix up an incorrectly recognized timezone and guess-timezone()
  to automatically deduce the timezone value on the assumption that the message
  is received in near real time. (#2818)
• Send Server Name Identification (SNI) information with transport(tls).
  Enable it by setting the sni(yes) option in the tls block in your
  destination. (#2930)

Features

• templates: change the $LOGHOST macro to honour use-fqdn() (#2894)
• Define syslog-ng-sysconfdir (#2932)
• dqtool: add assign dqfile to persist file feature (#2872)

Bugfixes

• Fix backtick subsitution of defines/environment variables in the main configuration file. (#2906, #2909)
• Fix SCL block parameter substitution of quoted escaped newline (#2901)
• python, diskq, random-generator source: crash after failed reload (#2907)
• Fix crash at shutdown on 32bit systems (#2893, #2895)
• Invalidate the value of the LEGACY_MSGHDR macro in case either the PID or the PROGRAM
  macros are unset() using a rewrite rule. Previously LEGACY_MSGHDR would retain the old values. (#2896)
• on 32bit platform diskq ftruncate could fail due to size 32/64 interface (#2892)
• Support new tzdata format, starting from version 2009.XXX, in tzinfo parser. (#2898)
• udp, udp6, tcp, tcp6, syslog, network destination: Correctly detect and set IP_MULTICAST_TTL
  in case of multicast ip address (#2905)
• Fix hostname resolve on systems with only the loopback network interface configured (#2933)
• wildcard-file(): Add multi-line(), pad_size() and multi-line-mode() option validation. (#2922)
• kafka-c: Fix multiple memleaks (#2944)

Other changes

• geoip: remove deprecated module, geoip2 database location detection (#2780)
• various refactor, build issue fixes (#2902)

Notes to the developers

• LightRunWithStrace: Run syslog-ng behind strace (#2921)
• LightVerboseLogOnError: Increase default pytest verbosity on error (#2919)
• Dbld image caching (#2858)
• Dbld gradle caching (#2857)
• logreader,logsource: move scratch-buffer mark and reclaim into LogSource (#2903)

Credits

syslog-ng is developed as a community project, and as such it relies
on volunteers, to do the work necessarily to produce syslog-ng.

Reporting bugs, testing changes, writing code or simply providing
feedback are all important contributions, so please if you are a user
of syslog-ng, contribute.

We would like to thank the following people for their contribution:

Andras Mitzki, Antal Nemes, Attila Szakacs, Balazs Scheidler, Bertrand Jacquin,
Gabor Nagy, Henrik Grindal Bakken, Kerin Millar, kjhee43, Laszlo Budai,
Laszlo Szemere, László Várady, Péter Kókai, Raghunath Adhyapak, Zoltan Pallagi.