4 See also this page @ref{Новости, on russian}.
11 Fixed sending ability to areas.
16 @section Release 8.0.1
20 Fixed incorrect @code{freq.chunked} value calculation. If it missed,
21 then anyway chunked transfer mode was forcefully turned on.
24 Fixed incorrect full file's size calculation in @file{.nncp.meta}.
29 @section Release 8.0.0
33 @strong{Incompatible} encrypted packet format change: payload and pad
34 sizes are sent in-bound in the encrypted stream. That gives ability to
35 streamingly create encrypted packets, without knowing sizes in advance,
36 without creating temporary file or buffer data in memory.
39 Proper encrypted packet padding verification is done now. This is not
40 critical issue, but previously neither padding value, nor its size were
41 authenticated, giving ability to iteratively strip trailing bytes and
42 determine payload's size by observing the reaction of the encrypted
46 @command{nncp-exec} loses its @option{-use-tmp} option, because of
47 streaming-compatible encrypted packets format.
50 @command{nncp-file} and @command{nncp-exec} commands have
51 @option{-maxsize} option, limiting maximal resulting encrypted packet's
52 maximal size (returning error if it is exceeded). Could be useful,
53 because no payload size could be known in advance.
58 @section Release 7.7.0
62 Experimental @code{kqueue} and @code{inotify} based notifications
63 support about spool directory changes, for reducing their often reading
67 @file{.seen} and @file{.hdr} files moved to @file{seen/} and @file{hdr/}
68 subdirectories, for faster scanning of spool directories.
69 Current files migration required:
72 $ find $NNCPSPOOL -type f -name "*.hdr" -exec rm @{@} +
74 $ find $NNCPSPOOL -type d -name rx | while read rx ; do
77 find . -type f -name "*.seen" | while read fn ; do
78 mv $fn seen/$@{fn%.seen@}
82 $ find $NNCPSPOOL -type d -name area | while read area ; do
83 find $area -type f -name "*.seen" | while read fn ; do
92 @section Release 7.6.0
96 Logging may be done to specified opened file descriptor
97 (@env{$NNCPLOG=FD:5} for example).
98 That is friendly to use under @command{daemontools}.
101 Added additional checks of public keys existence in configuration file,
102 preventing some commands from failing.
107 @section Release 7.5.1
111 NNCP builds on NetBSD.
116 @section Release 7.5.0
120 @command{nncp-daemon} is compatible with UCSPI-TCP interface, so log
121 will contain remote side's address (when running under appropriate
122 utility). @option{-ucspi} option should be used instead of @option{-inetd}.
125 @command{nncp-call} can be UCSPI-TCP client, using @option{-ucspi} option.
128 Do not exit if some of MCD network interfaces can not be listened --
129 only warn about that.
134 @section Release 7.4.0
138 Fixed simultaneous @command{nncp-daemon} and @command{nncp-caller} MCD work.
143 @section Release 7.3.2
147 @command{hjson-cli} utility builds in vendor-mode now.
152 @section Release 7.3.1
156 Fixed possibly left opened file descriptor in online commands.
159 Severely decreased memory usage of MTH hashing.
164 @section Release 7.3.0
168 Fixed some workability problems on 32-bit systems with big files.
171 Ability to use directory with a bunch of files as a configuration.
172 @command{nncp-cfgdir} command appeared.
177 @section Release 7.2.1
181 Small optimizations in online commands.
186 @section Release 7.2.0
190 @command{nncp-trns} command appeared for manual transition packets creation.
193 If destination node of transitional packet has non empty @option{via}
194 route, then do not ignore, but use it.
197 Do not relay multicast packet to area message's originator, that
198 obviously has seen its own packet.
201 Much less memory usage during MTH hashing when offset is zero: when
202 packet is not resumed, but for example checked with @command{nncp-check}
208 @section Release 7.1.1
212 Fixed failing directories fsync after @file{.seen} file creation.
217 @section Release 7.1.0
221 Multicasting areas feature appeared. Implemented merely by an additional
222 plain packet type with @command{nncp-toss}, @command{nncp-file} and
223 @command{nncp-exec} commands modification.
226 Fixed workability of @command{nncp-file} and @command{nncp-exec}
227 commands, that use temporary file (stdin and @option{-use-tmp}).
230 Fixed disappearing bad return code in @command{nncp-exec} command.
233 Fixed invalid @file{.hdr} generation when transitional packets are used.
236 @option{-all} option appeared in @command{nncp-rm} command, applying to
237 all the nodes at once.
240 @option{-cycle} option appeared in @command{nncp-check} command, looping
241 the check in infinite cycle.
244 @command{nncp-rm} command can take node alias name.
247 @command{nncp-pkt} can parse @file{.hdr} files.
252 @section Release 7.0.0
256 Minimal required Go version 1.13.
259 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
260 Because of that, there are backward @strong{incompatible} changes of
261 encrypted files (everything laying in the spool directory) and
262 @file{.meta} files of chunked transfer.
264 Current implementation is far from being optimal: it lacks
265 parallelizable calculations and has higher memory consumption: nearly
266 512 KiB for each 1 GiB of file's data. Future performance and memory
267 size optimizations should not lead to packet's format change. But it is
268 still several times faster than BLAKE2b.
271 Resumed online downloads, because of MTH, require reading only of the
272 preceding part of file, not the whole one as was before.
275 @command{nncp-hash} utility appeared for calculating file's MTH hash.
278 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
279 packets. Lowering number of used primitives. Also, its encrypted
280 packet's header is used as an associated data during encryption.
283 MultiCast Discovery uses
284 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
287 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
290 @command{nncp-stat} reports about partly downloaded packets.
293 Updated dependencies.
298 @section Release 6.6.0
302 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
303 commands wait for all background checksummers completion after
304 connection is finished.
307 Added possibility of address determining through multicast announcement
308 in local area network, so called MCD (MultiCast Discovery).
313 @section Release 6.5.0
317 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
320 Fixed possible bad return code ignoring in automatic tosser.
323 Fixed race during file descriptors closing when online protocol call is
324 finished, that could lead to write error of received packet fragment.
327 Kill all packet transmission progress bars in @command{nncp-daemon},
328 @command{nncp-call} and @command{nncp-caller} when call is finished.
333 @section Release 6.4.0
337 Fixed possible race in online protocol, that lead to panic.
342 @section Release 6.3.0
346 Fixed possible panic while showing progress during online protocol.
351 @section Release 6.2.1
355 Three places in logs contained excess @code{%s}.
360 @section Release 6.2.0
364 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
367 Yet another logging refactoring and simplification.
368 Should be no visible differences to the end user.
373 @section Release 6.1.0
377 Optimization: most commands do not keep opened file descriptors now.
378 Previously you can exceed maximal number of opened files if you have got
379 many packets in the spool directory.
382 Optimization: do not close file descriptor of the file we download
383 online. Previously each chunk lead to expensive open/close calls.
386 Online downloaded files are saved with @file{.nock} (non-checksummed)
387 suffix, waiting either for @command{nncp-check}, or online daemons to
388 perform integrity check.
391 Optimization: files, that are not resumed, are checksummed immediately
392 during the online download, skipping @file{.nock}-intermediate step.
395 Ability to store encrypted packet's header in @file{.hdr} file, close to
396 the packet itself. That can greatly increase performance of packets
397 listing on filesystems with big block's size.
402 @section Release 6.0.0
406 Log uses human readable and easy machine parseable
407 @url{https://www.gnu.org/software/recutils/, recfile} format for the
408 records, instead of structured RFC 3339 lines. Old logs are not readable
409 by @command{nncp-log} anymore.
412 @option{-autotoss*} option workability with @command{nncp-daemon}'s
413 @option{-inetd} mode.
416 Call's @option{when-tx-exists} allows to make a call only when outbound
417 packets exists. Combined with seconds-aware cron expression that can be
418 used as some kind of auto dialler.
421 @command{nncp-cronexpr} command allows you to check validity and
422 expectations of specified cron expression.
427 @section Release 5.6.0
431 @option{-autotoss*} option runs tosser not after the call, but every
432 second while it is active.
435 @option{autotoss}, @option{autotoss-doseen},
436 @option{autotoss-nofile}, @option{autotoss-nofreq},
437 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
438 @option{calls} configuration section. You can configure per-call
439 automatic tosser options.
442 Use vendoring, instead of @env{$GOPATH} overriding during tarball
443 installation, because current minimal Go's version is 1.12 and it
449 @section Release 5.5.1
453 Respect for @env{$BINDIR}, @env{$INFODIR} and @env{$DOCDIR} environment
454 variables in @file{config} during installation.
459 @section Release 5.5.0
463 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
464 @command{nncp-bundle} and @command{nncp-stat}.
467 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
470 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
471 options now. Uncompressed packets are not compatible with previous NNCP
475 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
476 have @option{-autotoss*} options for running tosser after call is ended.
479 Updated dependencies. Minimal required Go version is 1.12.
484 @section Release 5.4.1
488 Fixed @code{SENDMAIL} variable usage during the build.
493 @section Release 5.4.0
497 Updated dependencies.
500 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
501 This should not influence package maintainers, because minimal @command{redo}
502 implementation is included in tarball.
507 @section Release 5.3.3
511 More various error checks.
514 Updated dependencies.
519 @section Release 5.3.2
523 Fixed incorrect logic of @option{onlinedeadline} timeout, where
524 connection won't take into account incoming packets events and will
525 forcefully disconnect.
530 @section Release 5.3.1
534 Fixed @option{onlinedeadline} workability with call addresses that use
535 external commands (@verb{#"|somecmd"#}).
538 @command{nncp-stat} has @option{-pkt} option displaying information
539 about each packet in the spool.
544 @section Release 5.3.0
548 Progress messages contain prefix, describing the running action.
551 Fixed not occurring handshake messages padding.
554 Finish all SP protocol related goroutines, less memory leak.
557 SP protocol generates less socket write calls, thus generating less TCP
561 Check @option{onlinedeadline} and @option{maxonlinetime} options every
562 second, independently from socket reads (up to 10 seconds).
565 Once per minute, if no other traffic exists, PING packets are sent in
566 SP-connection. That allows faster determining of connection unworkability.
569 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
574 @section Release 5.2.1
578 Fixed SP protocol error handling, sometimes causing program panic.
583 @section Release 5.2.0
587 Most commands by default show oneline operations progress.
588 @option{-progress}, @option{-noprogress} command line options,
589 @option{noprogress} configuration file option appeared.
592 Fixed incorrect @command{nncp-check} command return code, that returned
593 bad code when everything is good.
596 Free disk space check during @command{nncp-bundle -rx} call.
601 @section Release 5.1.2
605 @strong{Critical} vulnerability: remote peers authentication could lead
606 to incorrect identification of remote side, allowing foreign encrypted
610 Bugfix: private and public Noise keys were swapped in newly created
611 configuration files, that lead to inability to authenticate online peers.
614 Explicit directories fsync-ing for guaranteed files renaming.
619 @section Release 5.1.1
623 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
628 @section Release 5.1.0
632 @command{nncp-file} can send directories, automatically creating pax
636 Free disk space is checked during outbound packets creation.
639 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
640 file options replaced with the structure:
641 @option{freq: @{path: @dots{}, minsize: @dots{}, chunked: @dots{}@}}.
644 Added @option{freq.maxsize} configuration file option, forbidding of
645 freq sending larger than specified size.
648 Ability to notify about successfully executed commands (exec) with
649 @option{notify.exec} configuration file option.
654 @section Release 5.0.0
658 @strong{Incompatible} configuration file format change: YAML is
659 replaced with Hjson, due to its simplicity, without noticeable lack
660 of either functionality or convenience.
663 @strong{Incompatible} plain packet format changes. Older versions are
664 not supported. @code{zlib} compression is replaced with
665 @code{Zstandard}, due to its speed and efficiency, despite library
666 version is not mature enough.
669 Ability to call remote nodes via pipe call of external command, not only
673 @command{nncp-cfgnew} generates configuration file with many
674 comments. @option{-nocomments} option can be used for an old
678 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
679 avoid possible collisions with @file{.nncp.chunkCTR}.
682 Ability to override process umask through configuration file option.
685 Files and directories are created with 666/777 permissions by default,
686 allowing control with @command{umask}.
689 Updated dependencies.
692 Full usage of go modules for dependencies management
693 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
696 Forbid any later GNU GPL version autousage
697 (project's licence now is GNU GPLv3-only).
704 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
712 @strong{Incompatible} encrypted and eblob packet format change: AEAD
713 encryption mode with 128 KiB blocks is used now, because previously
714 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
715 decrypted data to external command. Older versions are not supported.
718 Available free space checking before copying in @command{nncp-xfer},
719 @command{nncp-daemon}, @command{nncp-call(er)}.
722 @command{nncp-call} has ability only to list packets on remote node,
723 without their transmission.
726 @command{nncp-call} has ability to transfer only specified packets.
729 Workability of @option{xxrate} preference in @option{calls}
730 configuration file section.
733 Dependant libraries are updated.
739 Begin using of @code{go.mod} subsystem.
746 @item @command{nncp-daemon} can be run as @command{inetd}-service.
754 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
755 if @file{.seen} exists and treat it like file was already downloaded.
756 Possibly it was transferred out-of-bound and remote side needs to be
760 If higher priority packet is spooled, then @command{nncp-daemon} will
761 queue its sending first, interrupting lower priority transmissions.
764 Simple packet rate limiter added to online-related tools
765 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
768 Ability to specify niceness with symbolic notation:
769 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
772 Changed default niceness levels:
773 for @command{nncp-exec} from 64 to 96,
774 for @command{nncp-freq} from 64 to 160,
775 for @command{nncp-file} from 196 to 224.
783 @strong{Incompatible} @emph{bundle} archive format changes and
784 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
785 valid tar archives, but Go 1.9 made them invalid because of long paths
786 inside. NNCP accidentally was dependant on that bug. Explicit adding of
787 @file{NNCP/} directory in archive restores workability with valid tar
795 Ability to disable relaying at all using @verb{|-via -|} command line option.
803 @strong{Incompatible} plain packet format changes. Older versions are
807 Ability to queue remote command execution, by configuring @option{exec}
808 option in configuration file and using @command{nncp-exec} command:
811 @command{nncp-mail} command is replaced with more flexible
812 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
813 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
815 @option{sendmail} configuration file option is replaced with
816 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
817 @verb{|exec: sendmail: [...]|}.
821 Ability to override @option{via} configuration option for destination
822 node via @option{-via} command line option for following commands:
823 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
826 Chunked files, having size less than specified chunk size, will be sent
827 as an ordinary single file.
830 Exec commands are invoked with additional @env{$NNCP_NICE} and
831 @env{$NNCP_SELF} environment variables.
834 Files, that are sent as a reply to freq, have niceness level taken from
835 the freq packet. You can set desired niceness during @command{nncp-freq}
836 invocation using @option{-replynice} option.
839 @command{nncp-toss} command can ignore specified packet types during
840 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
844 @command{nncp-file} command uses
845 @option{FreqMinSize}/@option{FreqChunked} configuration file options
846 for @option{-minsize}/@option{-chunked} by default. You can turn this
847 off by specifying zero value.
856 @strong{Incompatible} encrypted/eblob packet format changes. Older
857 versions are not supported.
860 Twofish encryption algorithm is replaced with ChaCha20. It is much more
861 faster. One cryptographic primitive less.
864 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
865 another cryptographic primitive less (assuming that BLAKE2X is nearly
866 identical to BLAKE2).
875 @strong{Incompatible} encrypted packet format changes. Older versions
879 @command{nncp-bundle} command can either create stream of encrypted
880 packets, or digest it. It is useful when dealing with
881 @code{stdin}/@code{stdout} based transmission methods (like writing to
882 CD-ROM without intermediate prepared ISO image and working with tape
886 @command{nncp-toss} is able to create @file{.seen} files preventing
887 duplicate packets receiving.
890 Single background checksum verifier worker is allowed in
891 @command{nncp-call}. This is helpful when thousands of small inbound
892 packets could create many goroutines.
895 Ability to override path to spool directory and logfile through either
896 command line argument, or environment variable.
899 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
900 @file{.part}, @file{.lock} and temporary files.
905 @section Release 0.12
907 @item Sendmail command is called with @env{$NNCP_SENDER} environment variable.
911 @section Release 0.11
913 @item @command{nncp-stat}'s command output is sorted by node name.
917 @section Release 0.10
920 @command{nncp-freq}'s @file{DST} argument is optional now. Last
921 @file{SRC} path's element will be used by default.
928 Fix @option{-rx}/@option{-tx} arguments processing in
929 @command{nncp-call} command. They were ignored.
936 Little bugfix in @command{nncp-file} command, where @option{-minsize}
937 option for unchunked transfer was not in KiBs, but in bytes.
945 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
946 encrypted temporary file for that.
949 Chunked files transmission appeared with corresponding
950 @command{nncp-reass} command and @option{freqchunked} configuration file
951 entry. Useful for transferring big files over small storage devices.
954 @option{freqminsize} configuration file option, analogue to
955 @option{-minsize} one.
958 @command{nncp-xfer}'s @option{-force} option is renamed to
959 @option{-mkdir} for clarity.
962 @option{-minsize} option is specified in KiBs, not bytes, for
966 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
967 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
968 common prefix and are grouped together for convenience.
971 @command{nncp-cfgenc} command appeared, allowing configuration file
972 encryption/decryption, for keeping it safe without any either OpenPGP or
976 Cryptographic libraries (dependencies) are updated.
983 @item Small @command{nncp-rm} command appeared.
984 @item Cryptographic libraries (dependencies) are updated.
991 Trivial small fix in default niceness level of @command{nncp-file}
992 and @command{nncp-freq} commands.
1000 Small fix in @command{nncp-call}, @command{nncp-caller},
1001 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
1005 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
1006 and more convenient to use.
1009 @command{nncp-mincfg} command appeared: helper allowing to create
1010 minimalistic stripped down configuration file without private keys, that
1011 is useful during @command{nncp-xfer} usage.
1016 @section Release 0.3
1018 @item Fixed compatibility with Go 1.6.
1022 @section Release 0.2
1026 @strong{Incompatible} packet's format change (magic number is changed
1027 too): size field is encrypted and is not send in plaintext anymore.
1030 @option{-minsize} option gives ability to automatically pad outgoing
1031 packets to specified minimal size.
1034 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
1035 always check new @emph{tx} packets appearance in the background while
1036 connected. Remote side is immediately notified.
1039 @option{-onlinedeadline} option gives ability to configure timeout of
1040 inactivity of online connection, when it could be disconnected. It could
1041 be used to keep connection alive for a long time.
1044 @option{-maxonlinetime} option gives ability to set maximal allowable
1045 online connection aliveness time.
1048 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
1051 @command{nncp-pkt} command can decompress the data.