4 See also this page @ref{Новости, on russian}.
11 Fixed @command{nncp-bundle} workability.
16 @section Release 8.4.0
20 Multicast related interface names (@code{mcd-listen} and @code{mcd-send}
21 configuration options) are now regular expressions. By default
22 @command{nncp-cfgnew} uncomments them now with @code{.*} interface name.
25 @command{nncp-call} command has @option{-mcd-wait} option to wait for
26 multicast packet about node's address.
29 @command{nncp-file} command skips everything that is neither regular
30 file nor directory during pax-archive creation.
35 @section Release 8.3.0
39 Fixed building issues on 32-bit systems.
44 @section Release 8.2.0
48 Yggdrasil uses pure-Go IPv6+TCP network stack, instead of naked μTP
49 transport protocol, making it able to work as an ordinary TCP server
50 inside overlay network.
53 Yggdrasil's @code{prv;bind1,bind2;pub...}-like configuration strings are
54 replaced with URL-like ones (@code{yggdrasils://PRV?bind=BIND1&bind=BIND2&pub=PUB}).
57 Ability to pass multicast-related parameters to Yggdrasil configuration.
60 @command{nncp-daemon} is able to listen on both TCP and Yggdrasil-driven
61 sockets simultaneously.
64 @command{nncp-daemon}'s listening on peering endpoint socket is optional
65 -- you can be reached through the peers.
70 @section Release 8.1.0
74 @command{nncp-cfgdir} does not require @code{self} section existence in
78 Ability to act as Yggdrasil network client, using online protocol on top of it.
83 @section Release 8.0.2
87 Fixed sending ability to areas.
92 @section Release 8.0.1
96 Fixed incorrect @code{freq.chunked} value calculation. If it was missed,
97 then chunked transfer mode was forcefully turned on anyway.
100 Fixed incorrect full file's size calculation in @file{.nncp.meta}.
105 @section Release 8.0.0
109 @strong{Incompatible} encrypted packet format change: payload and pad
110 sizes are sent in-bound in the encrypted stream. That gives ability to
111 streamingly create encrypted packets, without knowing sizes in advance,
112 without creating temporary file or buffer data in memory.
115 Proper encrypted packet padding verification is done now. This is not
116 critical issue, but previously neither padding value, nor its size were
117 authenticated, giving ability to iteratively strip trailing bytes and
118 determine payload's size by observing the reaction of the encrypted
122 @command{nncp-exec} loses its @option{-use-tmp} option, because of
123 streaming-compatible encrypted packets format.
126 @command{nncp-file} and @command{nncp-exec} commands have
127 @option{-maxsize} option, limiting maximal resulting encrypted packet's
128 maximal size (returning error if it is exceeded). Could be useful,
129 because no payload size could be known in advance.
134 @section Release 7.7.0
138 Experimental @code{kqueue} and @code{inotify} based notifications
139 support about spool directory changes, for reducing their often reading
143 @file{.seen} and @file{.hdr} files moved to @file{seen/} and @file{hdr/}
144 subdirectories, for faster scanning of spool directories.
145 Current files migration required:
148 $ find $NNCPSPOOL -type f -name "*.hdr" -exec rm @{@} +
150 $ find $NNCPSPOOL -type d -name rx | while read rx ; do
153 find . -type f -name "*.seen" | while read fn ; do
154 mv $fn seen/$@{fn%.seen@}
158 $ find $NNCPSPOOL -type d -name area | while read area ; do
159 find $area -type f -name "*.seen" | while read fn ; do
168 @section Release 7.6.0
172 Logging may be done to specified opened file descriptor
173 (@env{$NNCPLOG=FD:5} for example).
174 That is friendly to use under @command{daemontools}.
177 Added additional checks of public keys existence in configuration file,
178 preventing some commands from failing.
183 @section Release 7.5.1
187 NNCP builds on NetBSD.
192 @section Release 7.5.0
196 @command{nncp-daemon} is compatible with UCSPI-TCP interface, so log
197 will contain remote side's address (when running under appropriate
198 utility). @option{-ucspi} option should be used instead of @option{-inetd}.
201 @command{nncp-call} can be UCSPI-TCP client, using @option{-ucspi} option.
204 Do not exit if some of MCD network interfaces can not be listened --
205 only warn about that.
210 @section Release 7.4.0
214 Fixed simultaneous @command{nncp-daemon} and @command{nncp-caller} MCD work.
219 @section Release 7.3.2
223 @command{hjson-cli} utility builds in vendor-mode now.
228 @section Release 7.3.1
232 Fixed possibly left opened file descriptor in online commands.
235 Severely decreased memory usage of MTH hashing.
240 @section Release 7.3.0
244 Fixed some workability problems on 32-bit systems with big files.
247 Ability to use directory with a bunch of files as a configuration.
248 @command{nncp-cfgdir} command appeared.
253 @section Release 7.2.1
257 Small optimizations in online commands.
262 @section Release 7.2.0
266 @command{nncp-trns} command appeared for manual transition packets creation.
269 If destination node of transitional packet has non empty @option{via}
270 route, then do not ignore, but use it.
273 Do not relay multicast packet to area message's originator, that
274 obviously has seen its own packet.
277 Much less memory usage during MTH hashing when offset is zero: when
278 packet is not resumed, but for example checked with @command{nncp-check}
284 @section Release 7.1.1
288 Fixed failing directories fsync after @file{.seen} file creation.
293 @section Release 7.1.0
297 Multicasting areas feature appeared. Implemented merely by an additional
298 plain packet type with @command{nncp-toss}, @command{nncp-file} and
299 @command{nncp-exec} commands modification.
302 Fixed workability of @command{nncp-file} and @command{nncp-exec}
303 commands, that use temporary file (stdin and @option{-use-tmp}).
306 Fixed disappearing bad return code in @command{nncp-exec} command.
309 Fixed invalid @file{.hdr} generation when transitional packets are used.
312 @option{-all} option appeared in @command{nncp-rm} command, applying to
313 all the nodes at once.
316 @option{-cycle} option appeared in @command{nncp-check} command, looping
317 the check in infinite cycle.
320 @command{nncp-rm} command can take node alias name.
323 @command{nncp-pkt} can parse @file{.hdr} files.
328 @section Release 7.0.0
332 Minimal required Go version 1.13.
335 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
336 Because of that, there are backward @strong{incompatible} changes of
337 encrypted files (everything laying in the spool directory) and
338 @file{.meta} files of chunked transfer.
340 Current implementation is far from being optimal: it lacks
341 parallelizable calculations and has higher memory consumption: nearly
342 512 KiB for each 1 GiB of file's data. Future performance and memory
343 size optimizations should not lead to packet's format change. But it is
344 still several times faster than BLAKE2b.
347 Resumed online downloads, because of MTH, require reading only of the
348 preceding part of file, not the whole one as was before.
351 @command{nncp-hash} utility appeared for calculating file's MTH hash.
354 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
355 packets. Lowering number of used primitives. Also, its encrypted
356 packet's header is used as an associated data during encryption.
359 MultiCast Discovery uses
360 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
363 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
366 @command{nncp-stat} reports about partly downloaded packets.
369 Updated dependencies.
374 @section Release 6.6.0
378 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
379 commands wait for all background checksummers completion after
380 connection is finished.
383 Added possibility of address determining through multicast announcement
384 in local area network, so called MCD (MultiCast Discovery).
389 @section Release 6.5.0
393 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
396 Fixed possible bad return code ignoring in automatic tosser.
399 Fixed race during file descriptors closing when online protocol call is
400 finished, that could lead to write error of received packet fragment.
403 Kill all packet transmission progress bars in @command{nncp-daemon},
404 @command{nncp-call} and @command{nncp-caller} when call is finished.
409 @section Release 6.4.0
413 Fixed possible race in online protocol, that lead to panic.
418 @section Release 6.3.0
422 Fixed possible panic while showing progress during online protocol.
427 @section Release 6.2.1
431 Three places in logs contained excess @code{%s}.
436 @section Release 6.2.0
440 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
443 Yet another logging refactoring and simplification.
444 Should be no visible differences to the end user.
449 @section Release 6.1.0
453 Optimization: most commands do not keep opened file descriptors now.
454 Previously you can exceed maximal number of opened files if you have got
455 many packets in the spool directory.
458 Optimization: do not close file descriptor of the file we download
459 online. Previously each chunk lead to expensive open/close calls.
462 Online downloaded files are saved with @file{.nock} (non-checksummed)
463 suffix, waiting either for @command{nncp-check}, or online daemons to
464 perform integrity check.
467 Optimization: files, that are not resumed, are checksummed immediately
468 during the online download, skipping @file{.nock}-intermediate step.
471 Ability to store encrypted packet's header in @file{.hdr} file, close to
472 the packet itself. That can greatly increase performance of packets
473 listing on filesystems with big block's size.
478 @section Release 6.0.0
482 Log uses human readable and easy machine parseable
483 @url{https://www.gnu.org/software/recutils/, recfile} format for the
484 records, instead of structured RFC 3339 lines. Old logs are not readable
485 by @command{nncp-log} anymore.
488 @option{-autotoss*} option workability with @command{nncp-daemon}'s
489 @option{-inetd} mode.
492 Call's @option{when-tx-exists} allows to make a call only when outbound
493 packets exists. Combined with seconds-aware cron expression that can be
494 used as some kind of auto dialler.
497 @command{nncp-cronexpr} command allows you to check validity and
498 expectations of specified cron expression.
503 @section Release 5.6.0
507 @option{-autotoss*} option runs tosser not after the call, but every
508 second while it is active.
511 @option{autotoss}, @option{autotoss-doseen},
512 @option{autotoss-nofile}, @option{autotoss-nofreq},
513 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
514 @option{calls} configuration section. You can configure per-call
515 automatic tosser options.
518 Use vendoring, instead of @env{$GOPATH} overriding during tarball
519 installation, because current minimal Go's version is 1.12 and it
525 @section Release 5.5.1
529 Respect for @env{$BINDIR}, @env{$INFODIR} and @env{$DOCDIR} environment
530 variables in @file{config} during installation.
535 @section Release 5.5.0
539 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
540 @command{nncp-bundle} and @command{nncp-stat}.
543 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
546 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
547 options now. Uncompressed packets are not compatible with previous NNCP
551 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
552 have @option{-autotoss*} options for running tosser after call is ended.
555 Updated dependencies. Minimal required Go version is 1.12.
560 @section Release 5.4.1
564 Fixed @code{SENDMAIL} variable usage during the build.
569 @section Release 5.4.0
573 Updated dependencies.
576 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
577 This should not influence package maintainers, because minimal @command{redo}
578 implementation is included in tarball.
583 @section Release 5.3.3
587 More various error checks.
590 Updated dependencies.
595 @section Release 5.3.2
599 Fixed incorrect logic of @option{onlinedeadline} timeout, where
600 connection won't take into account incoming packets events and will
601 forcefully disconnect.
606 @section Release 5.3.1
610 Fixed @option{onlinedeadline} workability with call addresses that use
611 external commands (@verb{#"|somecmd"#}).
614 @command{nncp-stat} has @option{-pkt} option displaying information
615 about each packet in the spool.
620 @section Release 5.3.0
624 Progress messages contain prefix, describing the running action.
627 Fixed not occurring handshake messages padding.
630 Finish all SP protocol related goroutines, less memory leak.
633 SP protocol generates less socket write calls, thus generating less TCP
637 Check @option{onlinedeadline} and @option{maxonlinetime} options every
638 second, independently from socket reads (up to 10 seconds).
641 Once per minute, if no other traffic exists, PING packets are sent in
642 SP-connection. That allows faster determining of connection unworkability.
645 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
650 @section Release 5.2.1
654 Fixed SP protocol error handling, sometimes causing program panic.
659 @section Release 5.2.0
663 Most commands by default show oneline operations progress.
664 @option{-progress}, @option{-noprogress} command line options,
665 @option{noprogress} configuration file option appeared.
668 Fixed incorrect @command{nncp-check} command return code, that returned
669 bad code when everything is good.
672 Free disk space check during @command{nncp-bundle -rx} call.
677 @section Release 5.1.2
681 @strong{Critical} vulnerability: remote peers authentication could lead
682 to incorrect identification of remote side, allowing foreign encrypted
686 Bugfix: private and public Noise keys were swapped in newly created
687 configuration files, that lead to inability to authenticate online peers.
690 Explicit directories fsync-ing for guaranteed files renaming.
695 @section Release 5.1.1
699 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
704 @section Release 5.1.0
708 @command{nncp-file} can send directories, automatically creating pax
712 Free disk space is checked during outbound packets creation.
715 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
716 file options replaced with the structure:
717 @option{freq: @{path: @dots{}, minsize: @dots{}, chunked: @dots{}@}}.
720 Added @option{freq.maxsize} configuration file option, forbidding of
721 freq sending larger than specified size.
724 Ability to notify about successfully executed commands (exec) with
725 @option{notify.exec} configuration file option.
730 @section Release 5.0.0
734 @strong{Incompatible} configuration file format change: YAML is
735 replaced with Hjson, due to its simplicity, without noticeable lack
736 of either functionality or convenience.
739 @strong{Incompatible} plain packet format changes. Older versions are
740 not supported. @code{zlib} compression is replaced with
741 @code{Zstandard}, due to its speed and efficiency, despite library
742 version is not mature enough.
745 Ability to call remote nodes via pipe call of external command, not only
749 @command{nncp-cfgnew} generates configuration file with many
750 comments. @option{-nocomments} option can be used for an old
754 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
755 avoid possible collisions with @file{.nncp.chunkCTR}.
758 Ability to override process umask through configuration file option.
761 Files and directories are created with 666/777 permissions by default,
762 allowing control with @command{umask}.
765 Updated dependencies.
768 Full usage of go modules for dependencies management
769 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
772 Forbid any later GNU GPL version autousage
773 (project's licence now is GNU GPLv3-only).
780 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
788 @strong{Incompatible} encrypted and eblob packet format change: AEAD
789 encryption mode with 128 KiB blocks is used now, because previously
790 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
791 decrypted data to external command. Older versions are not supported.
794 Available free space checking before copying in @command{nncp-xfer},
795 @command{nncp-daemon}, @command{nncp-call(er)}.
798 @command{nncp-call} has ability only to list packets on remote node,
799 without their transmission.
802 @command{nncp-call} has ability to transfer only specified packets.
805 Workability of @option{xxrate} preference in @option{calls}
806 configuration file section.
809 Dependant libraries are updated.
815 Begin using of @code{go.mod} subsystem.
822 @item @command{nncp-daemon} can be run as @command{inetd}-service.
830 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
831 if @file{.seen} exists and treat it like file was already downloaded.
832 Possibly it was transferred out-of-bound and remote side needs to be
836 If higher priority packet is spooled, then @command{nncp-daemon} will
837 queue its sending first, interrupting lower priority transmissions.
840 Simple packet rate limiter added to online-related tools
841 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
844 Ability to specify niceness with symbolic notation:
845 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
848 Changed default niceness levels:
849 for @command{nncp-exec} from 64 to 96,
850 for @command{nncp-freq} from 64 to 160,
851 for @command{nncp-file} from 196 to 224.
859 @strong{Incompatible} @emph{bundle} archive format changes and
860 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
861 valid tar archives, but Go 1.9 made them invalid because of long paths
862 inside. NNCP accidentally was dependant on that bug. Explicit adding of
863 @file{NNCP/} directory in archive restores workability with valid tar
871 Ability to disable relaying at all using @verb{|-via -|} command line option.
879 @strong{Incompatible} plain packet format changes. Older versions are
883 Ability to queue remote command execution, by configuring @option{exec}
884 option in configuration file and using @command{nncp-exec} command:
887 @command{nncp-mail} command is replaced with more flexible
888 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
889 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
891 @option{sendmail} configuration file option is replaced with
892 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
893 @verb{|exec: sendmail: [...]|}.
897 Ability to override @option{via} configuration option for destination
898 node via @option{-via} command line option for following commands:
899 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
902 Chunked files, having size less than specified chunk size, will be sent
903 as an ordinary single file.
906 Exec commands are invoked with additional @env{$NNCP_NICE} and
907 @env{$NNCP_SELF} environment variables.
910 Files, that are sent as a reply to freq, have niceness level taken from
911 the freq packet. You can set desired niceness during @command{nncp-freq}
912 invocation using @option{-replynice} option.
915 @command{nncp-toss} command can ignore specified packet types during
916 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
920 @command{nncp-file} command uses
921 @option{FreqMinSize}/@option{FreqChunked} configuration file options
922 for @option{-minsize}/@option{-chunked} by default. You can turn this
923 off by specifying zero value.
932 @strong{Incompatible} encrypted/eblob packet format changes. Older
933 versions are not supported.
936 Twofish encryption algorithm is replaced with ChaCha20. It is much more
937 faster. One cryptographic primitive less.
940 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
941 another cryptographic primitive less (assuming that BLAKE2X is nearly
942 identical to BLAKE2).
951 @strong{Incompatible} encrypted packet format changes. Older versions
955 @command{nncp-bundle} command can either create stream of encrypted
956 packets, or digest it. It is useful when dealing with
957 @code{stdin}/@code{stdout} based transmission methods (like writing to
958 CD-ROM without intermediate prepared ISO image and working with tape
962 @command{nncp-toss} is able to create @file{.seen} files preventing
963 duplicate packets receiving.
966 Single background checksum verifier worker is allowed in
967 @command{nncp-call}. This is helpful when thousands of small inbound
968 packets could create many goroutines.
971 Ability to override path to spool directory and logfile through either
972 command line argument, or environment variable.
975 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
976 @file{.part}, @file{.lock} and temporary files.
981 @section Release 0.12
983 @item Sendmail command is called with @env{$NNCP_SENDER} environment variable.
987 @section Release 0.11
989 @item @command{nncp-stat}'s command output is sorted by node name.
993 @section Release 0.10
996 @command{nncp-freq}'s @file{DST} argument is optional now. Last
997 @file{SRC} path's element will be used by default.
1001 @section Release 0.9
1004 Fix @option{-rx}/@option{-tx} arguments processing in
1005 @command{nncp-call} command. They were ignored.
1009 @section Release 0.8
1012 Little bugfix in @command{nncp-file} command, where @option{-minsize}
1013 option for unchunked transfer was not in KiBs, but in bytes.
1017 @section Release 0.7
1021 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
1022 encrypted temporary file for that.
1025 Chunked files transmission appeared with corresponding
1026 @command{nncp-reass} command and @option{freqchunked} configuration file
1027 entry. Useful for transferring big files over small storage devices.
1030 @option{freqminsize} configuration file option, analogue to
1031 @option{-minsize} one.
1034 @command{nncp-xfer}'s @option{-force} option is renamed to
1035 @option{-mkdir} for clarity.
1038 @option{-minsize} option is specified in KiBs, not bytes, for
1042 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
1043 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
1044 common prefix and are grouped together for convenience.
1047 @command{nncp-cfgenc} command appeared, allowing configuration file
1048 encryption/decryption, for keeping it safe without any either OpenPGP or
1049 similar tools usage.
1052 Cryptographic libraries (dependencies) are updated.
1057 @section Release 0.6
1059 @item Small @command{nncp-rm} command appeared.
1060 @item Cryptographic libraries (dependencies) are updated.
1064 @section Release 0.5
1067 Trivial small fix in default niceness level of @command{nncp-file}
1068 and @command{nncp-freq} commands.
1072 @section Release 0.4
1076 Small fix in @command{nncp-call}, @command{nncp-caller},
1077 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
1081 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
1082 and more convenient to use.
1085 @command{nncp-mincfg} command appeared: helper allowing to create
1086 minimalistic stripped down configuration file without private keys, that
1087 is useful during @command{nncp-xfer} usage.
1092 @section Release 0.3
1094 @item Fixed compatibility with Go 1.6.
1098 @section Release 0.2
1102 @strong{Incompatible} packet's format change (magic number is changed
1103 too): size field is encrypted and is not send in plaintext anymore.
1106 @option{-minsize} option gives ability to automatically pad outgoing
1107 packets to specified minimal size.
1110 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
1111 always check new @emph{tx} packets appearance in the background while
1112 connected. Remote side is immediately notified.
1115 @option{-onlinedeadline} option gives ability to configure timeout of
1116 inactivity of online connection, when it could be disconnected. It could
1117 be used to keep connection alive for a long time.
1120 @option{-maxonlinetime} option gives ability to set maximal allowable
1121 online connection aliveness time.
1124 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
1127 @command{nncp-pkt} command can decompress the data.