4 See also this page @ref{Новости, on russian}.
11 Multicast related interface names (@code{mcd-listen} and @code{mcd-send}
12 configuration options) are now regular expressions. By default
13 @command{nncp-cfgnew} uncomments them now with @code{.*} interface name.
16 @command{nncp-call} command has @option{-mcd-wait} option to wait for
17 multicast packet about node's address.
20 @command{nncp-file} command skips everything that is neither regular
21 file nor directory during pax-archive creation.
26 @section Release 8.3.0
30 Fixed building issues on 32-bit systems.
35 @section Release 8.2.0
39 Yggdrasil uses pure-Go IPv6+TCP network stack, instead of naked μTP
40 transport protocol, making it able to work as an ordinary TCP server
41 inside overlay network.
44 Yggdrasil's @code{prv;bind1,bind2;pub...}-like configuration strings are
45 replaced with URL-like ones (@code{yggdrasils://PRV?bind=BIND1&bind=BIND2&pub=PUB}).
48 Ability to pass multicast-related parameters to Yggdrasil configuration.
51 @command{nncp-daemon} is able to listen on both TCP and Yggdrasil-driven
52 sockets simultaneously.
55 @command{nncp-daemon}'s listening on peering endpoint socket is optional
56 -- you can be reached through the peers.
61 @section Release 8.1.0
65 @command{nncp-cfgdir} does not require @code{self} section existence in
69 Ability to act as Yggdrasil network client, using online protocol on top of it.
74 @section Release 8.0.2
78 Fixed sending ability to areas.
83 @section Release 8.0.1
87 Fixed incorrect @code{freq.chunked} value calculation. If it was missed,
88 then chunked transfer mode was forcefully turned on anyway.
91 Fixed incorrect full file's size calculation in @file{.nncp.meta}.
96 @section Release 8.0.0
100 @strong{Incompatible} encrypted packet format change: payload and pad
101 sizes are sent in-bound in the encrypted stream. That gives ability to
102 streamingly create encrypted packets, without knowing sizes in advance,
103 without creating temporary file or buffer data in memory.
106 Proper encrypted packet padding verification is done now. This is not
107 critical issue, but previously neither padding value, nor its size were
108 authenticated, giving ability to iteratively strip trailing bytes and
109 determine payload's size by observing the reaction of the encrypted
113 @command{nncp-exec} loses its @option{-use-tmp} option, because of
114 streaming-compatible encrypted packets format.
117 @command{nncp-file} and @command{nncp-exec} commands have
118 @option{-maxsize} option, limiting maximal resulting encrypted packet's
119 maximal size (returning error if it is exceeded). Could be useful,
120 because no payload size could be known in advance.
125 @section Release 7.7.0
129 Experimental @code{kqueue} and @code{inotify} based notifications
130 support about spool directory changes, for reducing their often reading
134 @file{.seen} and @file{.hdr} files moved to @file{seen/} and @file{hdr/}
135 subdirectories, for faster scanning of spool directories.
136 Current files migration required:
139 $ find $NNCPSPOOL -type f -name "*.hdr" -exec rm @{@} +
141 $ find $NNCPSPOOL -type d -name rx | while read rx ; do
144 find . -type f -name "*.seen" | while read fn ; do
145 mv $fn seen/$@{fn%.seen@}
149 $ find $NNCPSPOOL -type d -name area | while read area ; do
150 find $area -type f -name "*.seen" | while read fn ; do
159 @section Release 7.6.0
163 Logging may be done to specified opened file descriptor
164 (@env{$NNCPLOG=FD:5} for example).
165 That is friendly to use under @command{daemontools}.
168 Added additional checks of public keys existence in configuration file,
169 preventing some commands from failing.
174 @section Release 7.5.1
178 NNCP builds on NetBSD.
183 @section Release 7.5.0
187 @command{nncp-daemon} is compatible with UCSPI-TCP interface, so log
188 will contain remote side's address (when running under appropriate
189 utility). @option{-ucspi} option should be used instead of @option{-inetd}.
192 @command{nncp-call} can be UCSPI-TCP client, using @option{-ucspi} option.
195 Do not exit if some of MCD network interfaces can not be listened --
196 only warn about that.
201 @section Release 7.4.0
205 Fixed simultaneous @command{nncp-daemon} and @command{nncp-caller} MCD work.
210 @section Release 7.3.2
214 @command{hjson-cli} utility builds in vendor-mode now.
219 @section Release 7.3.1
223 Fixed possibly left opened file descriptor in online commands.
226 Severely decreased memory usage of MTH hashing.
231 @section Release 7.3.0
235 Fixed some workability problems on 32-bit systems with big files.
238 Ability to use directory with a bunch of files as a configuration.
239 @command{nncp-cfgdir} command appeared.
244 @section Release 7.2.1
248 Small optimizations in online commands.
253 @section Release 7.2.0
257 @command{nncp-trns} command appeared for manual transition packets creation.
260 If destination node of transitional packet has non empty @option{via}
261 route, then do not ignore, but use it.
264 Do not relay multicast packet to area message's originator, that
265 obviously has seen its own packet.
268 Much less memory usage during MTH hashing when offset is zero: when
269 packet is not resumed, but for example checked with @command{nncp-check}
275 @section Release 7.1.1
279 Fixed failing directories fsync after @file{.seen} file creation.
284 @section Release 7.1.0
288 Multicasting areas feature appeared. Implemented merely by an additional
289 plain packet type with @command{nncp-toss}, @command{nncp-file} and
290 @command{nncp-exec} commands modification.
293 Fixed workability of @command{nncp-file} and @command{nncp-exec}
294 commands, that use temporary file (stdin and @option{-use-tmp}).
297 Fixed disappearing bad return code in @command{nncp-exec} command.
300 Fixed invalid @file{.hdr} generation when transitional packets are used.
303 @option{-all} option appeared in @command{nncp-rm} command, applying to
304 all the nodes at once.
307 @option{-cycle} option appeared in @command{nncp-check} command, looping
308 the check in infinite cycle.
311 @command{nncp-rm} command can take node alias name.
314 @command{nncp-pkt} can parse @file{.hdr} files.
319 @section Release 7.0.0
323 Minimal required Go version 1.13.
326 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
327 Because of that, there are backward @strong{incompatible} changes of
328 encrypted files (everything laying in the spool directory) and
329 @file{.meta} files of chunked transfer.
331 Current implementation is far from being optimal: it lacks
332 parallelizable calculations and has higher memory consumption: nearly
333 512 KiB for each 1 GiB of file's data. Future performance and memory
334 size optimizations should not lead to packet's format change. But it is
335 still several times faster than BLAKE2b.
338 Resumed online downloads, because of MTH, require reading only of the
339 preceding part of file, not the whole one as was before.
342 @command{nncp-hash} utility appeared for calculating file's MTH hash.
345 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
346 packets. Lowering number of used primitives. Also, its encrypted
347 packet's header is used as an associated data during encryption.
350 MultiCast Discovery uses
351 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
354 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
357 @command{nncp-stat} reports about partly downloaded packets.
360 Updated dependencies.
365 @section Release 6.6.0
369 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
370 commands wait for all background checksummers completion after
371 connection is finished.
374 Added possibility of address determining through multicast announcement
375 in local area network, so called MCD (MultiCast Discovery).
380 @section Release 6.5.0
384 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
387 Fixed possible bad return code ignoring in automatic tosser.
390 Fixed race during file descriptors closing when online protocol call is
391 finished, that could lead to write error of received packet fragment.
394 Kill all packet transmission progress bars in @command{nncp-daemon},
395 @command{nncp-call} and @command{nncp-caller} when call is finished.
400 @section Release 6.4.0
404 Fixed possible race in online protocol, that lead to panic.
409 @section Release 6.3.0
413 Fixed possible panic while showing progress during online protocol.
418 @section Release 6.2.1
422 Three places in logs contained excess @code{%s}.
427 @section Release 6.2.0
431 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
434 Yet another logging refactoring and simplification.
435 Should be no visible differences to the end user.
440 @section Release 6.1.0
444 Optimization: most commands do not keep opened file descriptors now.
445 Previously you can exceed maximal number of opened files if you have got
446 many packets in the spool directory.
449 Optimization: do not close file descriptor of the file we download
450 online. Previously each chunk lead to expensive open/close calls.
453 Online downloaded files are saved with @file{.nock} (non-checksummed)
454 suffix, waiting either for @command{nncp-check}, or online daemons to
455 perform integrity check.
458 Optimization: files, that are not resumed, are checksummed immediately
459 during the online download, skipping @file{.nock}-intermediate step.
462 Ability to store encrypted packet's header in @file{.hdr} file, close to
463 the packet itself. That can greatly increase performance of packets
464 listing on filesystems with big block's size.
469 @section Release 6.0.0
473 Log uses human readable and easy machine parseable
474 @url{https://www.gnu.org/software/recutils/, recfile} format for the
475 records, instead of structured RFC 3339 lines. Old logs are not readable
476 by @command{nncp-log} anymore.
479 @option{-autotoss*} option workability with @command{nncp-daemon}'s
480 @option{-inetd} mode.
483 Call's @option{when-tx-exists} allows to make a call only when outbound
484 packets exists. Combined with seconds-aware cron expression that can be
485 used as some kind of auto dialler.
488 @command{nncp-cronexpr} command allows you to check validity and
489 expectations of specified cron expression.
494 @section Release 5.6.0
498 @option{-autotoss*} option runs tosser not after the call, but every
499 second while it is active.
502 @option{autotoss}, @option{autotoss-doseen},
503 @option{autotoss-nofile}, @option{autotoss-nofreq},
504 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
505 @option{calls} configuration section. You can configure per-call
506 automatic tosser options.
509 Use vendoring, instead of @env{$GOPATH} overriding during tarball
510 installation, because current minimal Go's version is 1.12 and it
516 @section Release 5.5.1
520 Respect for @env{$BINDIR}, @env{$INFODIR} and @env{$DOCDIR} environment
521 variables in @file{config} during installation.
526 @section Release 5.5.0
530 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
531 @command{nncp-bundle} and @command{nncp-stat}.
534 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
537 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
538 options now. Uncompressed packets are not compatible with previous NNCP
542 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
543 have @option{-autotoss*} options for running tosser after call is ended.
546 Updated dependencies. Minimal required Go version is 1.12.
551 @section Release 5.4.1
555 Fixed @code{SENDMAIL} variable usage during the build.
560 @section Release 5.4.0
564 Updated dependencies.
567 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
568 This should not influence package maintainers, because minimal @command{redo}
569 implementation is included in tarball.
574 @section Release 5.3.3
578 More various error checks.
581 Updated dependencies.
586 @section Release 5.3.2
590 Fixed incorrect logic of @option{onlinedeadline} timeout, where
591 connection won't take into account incoming packets events and will
592 forcefully disconnect.
597 @section Release 5.3.1
601 Fixed @option{onlinedeadline} workability with call addresses that use
602 external commands (@verb{#"|somecmd"#}).
605 @command{nncp-stat} has @option{-pkt} option displaying information
606 about each packet in the spool.
611 @section Release 5.3.0
615 Progress messages contain prefix, describing the running action.
618 Fixed not occurring handshake messages padding.
621 Finish all SP protocol related goroutines, less memory leak.
624 SP protocol generates less socket write calls, thus generating less TCP
628 Check @option{onlinedeadline} and @option{maxonlinetime} options every
629 second, independently from socket reads (up to 10 seconds).
632 Once per minute, if no other traffic exists, PING packets are sent in
633 SP-connection. That allows faster determining of connection unworkability.
636 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
641 @section Release 5.2.1
645 Fixed SP protocol error handling, sometimes causing program panic.
650 @section Release 5.2.0
654 Most commands by default show oneline operations progress.
655 @option{-progress}, @option{-noprogress} command line options,
656 @option{noprogress} configuration file option appeared.
659 Fixed incorrect @command{nncp-check} command return code, that returned
660 bad code when everything is good.
663 Free disk space check during @command{nncp-bundle -rx} call.
668 @section Release 5.1.2
672 @strong{Critical} vulnerability: remote peers authentication could lead
673 to incorrect identification of remote side, allowing foreign encrypted
677 Bugfix: private and public Noise keys were swapped in newly created
678 configuration files, that lead to inability to authenticate online peers.
681 Explicit directories fsync-ing for guaranteed files renaming.
686 @section Release 5.1.1
690 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
695 @section Release 5.1.0
699 @command{nncp-file} can send directories, automatically creating pax
703 Free disk space is checked during outbound packets creation.
706 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
707 file options replaced with the structure:
708 @option{freq: @{path: @dots{}, minsize: @dots{}, chunked: @dots{}@}}.
711 Added @option{freq.maxsize} configuration file option, forbidding of
712 freq sending larger than specified size.
715 Ability to notify about successfully executed commands (exec) with
716 @option{notify.exec} configuration file option.
721 @section Release 5.0.0
725 @strong{Incompatible} configuration file format change: YAML is
726 replaced with Hjson, due to its simplicity, without noticeable lack
727 of either functionality or convenience.
730 @strong{Incompatible} plain packet format changes. Older versions are
731 not supported. @code{zlib} compression is replaced with
732 @code{Zstandard}, due to its speed and efficiency, despite library
733 version is not mature enough.
736 Ability to call remote nodes via pipe call of external command, not only
740 @command{nncp-cfgnew} generates configuration file with many
741 comments. @option{-nocomments} option can be used for an old
745 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
746 avoid possible collisions with @file{.nncp.chunkCTR}.
749 Ability to override process umask through configuration file option.
752 Files and directories are created with 666/777 permissions by default,
753 allowing control with @command{umask}.
756 Updated dependencies.
759 Full usage of go modules for dependencies management
760 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
763 Forbid any later GNU GPL version autousage
764 (project's licence now is GNU GPLv3-only).
771 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
779 @strong{Incompatible} encrypted and eblob packet format change: AEAD
780 encryption mode with 128 KiB blocks is used now, because previously
781 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
782 decrypted data to external command. Older versions are not supported.
785 Available free space checking before copying in @command{nncp-xfer},
786 @command{nncp-daemon}, @command{nncp-call(er)}.
789 @command{nncp-call} has ability only to list packets on remote node,
790 without their transmission.
793 @command{nncp-call} has ability to transfer only specified packets.
796 Workability of @option{xxrate} preference in @option{calls}
797 configuration file section.
800 Dependant libraries are updated.
806 Begin using of @code{go.mod} subsystem.
813 @item @command{nncp-daemon} can be run as @command{inetd}-service.
821 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
822 if @file{.seen} exists and treat it like file was already downloaded.
823 Possibly it was transferred out-of-bound and remote side needs to be
827 If higher priority packet is spooled, then @command{nncp-daemon} will
828 queue its sending first, interrupting lower priority transmissions.
831 Simple packet rate limiter added to online-related tools
832 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
835 Ability to specify niceness with symbolic notation:
836 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
839 Changed default niceness levels:
840 for @command{nncp-exec} from 64 to 96,
841 for @command{nncp-freq} from 64 to 160,
842 for @command{nncp-file} from 196 to 224.
850 @strong{Incompatible} @emph{bundle} archive format changes and
851 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
852 valid tar archives, but Go 1.9 made them invalid because of long paths
853 inside. NNCP accidentally was dependant on that bug. Explicit adding of
854 @file{NNCP/} directory in archive restores workability with valid tar
862 Ability to disable relaying at all using @verb{|-via -|} command line option.
870 @strong{Incompatible} plain packet format changes. Older versions are
874 Ability to queue remote command execution, by configuring @option{exec}
875 option in configuration file and using @command{nncp-exec} command:
878 @command{nncp-mail} command is replaced with more flexible
879 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
880 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
882 @option{sendmail} configuration file option is replaced with
883 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
884 @verb{|exec: sendmail: [...]|}.
888 Ability to override @option{via} configuration option for destination
889 node via @option{-via} command line option for following commands:
890 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
893 Chunked files, having size less than specified chunk size, will be sent
894 as an ordinary single file.
897 Exec commands are invoked with additional @env{$NNCP_NICE} and
898 @env{$NNCP_SELF} environment variables.
901 Files, that are sent as a reply to freq, have niceness level taken from
902 the freq packet. You can set desired niceness during @command{nncp-freq}
903 invocation using @option{-replynice} option.
906 @command{nncp-toss} command can ignore specified packet types during
907 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
911 @command{nncp-file} command uses
912 @option{FreqMinSize}/@option{FreqChunked} configuration file options
913 for @option{-minsize}/@option{-chunked} by default. You can turn this
914 off by specifying zero value.
923 @strong{Incompatible} encrypted/eblob packet format changes. Older
924 versions are not supported.
927 Twofish encryption algorithm is replaced with ChaCha20. It is much more
928 faster. One cryptographic primitive less.
931 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
932 another cryptographic primitive less (assuming that BLAKE2X is nearly
933 identical to BLAKE2).
942 @strong{Incompatible} encrypted packet format changes. Older versions
946 @command{nncp-bundle} command can either create stream of encrypted
947 packets, or digest it. It is useful when dealing with
948 @code{stdin}/@code{stdout} based transmission methods (like writing to
949 CD-ROM without intermediate prepared ISO image and working with tape
953 @command{nncp-toss} is able to create @file{.seen} files preventing
954 duplicate packets receiving.
957 Single background checksum verifier worker is allowed in
958 @command{nncp-call}. This is helpful when thousands of small inbound
959 packets could create many goroutines.
962 Ability to override path to spool directory and logfile through either
963 command line argument, or environment variable.
966 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
967 @file{.part}, @file{.lock} and temporary files.
972 @section Release 0.12
974 @item Sendmail command is called with @env{$NNCP_SENDER} environment variable.
978 @section Release 0.11
980 @item @command{nncp-stat}'s command output is sorted by node name.
984 @section Release 0.10
987 @command{nncp-freq}'s @file{DST} argument is optional now. Last
988 @file{SRC} path's element will be used by default.
995 Fix @option{-rx}/@option{-tx} arguments processing in
996 @command{nncp-call} command. They were ignored.
1000 @section Release 0.8
1003 Little bugfix in @command{nncp-file} command, where @option{-minsize}
1004 option for unchunked transfer was not in KiBs, but in bytes.
1008 @section Release 0.7
1012 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
1013 encrypted temporary file for that.
1016 Chunked files transmission appeared with corresponding
1017 @command{nncp-reass} command and @option{freqchunked} configuration file
1018 entry. Useful for transferring big files over small storage devices.
1021 @option{freqminsize} configuration file option, analogue to
1022 @option{-minsize} one.
1025 @command{nncp-xfer}'s @option{-force} option is renamed to
1026 @option{-mkdir} for clarity.
1029 @option{-minsize} option is specified in KiBs, not bytes, for
1033 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
1034 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
1035 common prefix and are grouped together for convenience.
1038 @command{nncp-cfgenc} command appeared, allowing configuration file
1039 encryption/decryption, for keeping it safe without any either OpenPGP or
1040 similar tools usage.
1043 Cryptographic libraries (dependencies) are updated.
1048 @section Release 0.6
1050 @item Small @command{nncp-rm} command appeared.
1051 @item Cryptographic libraries (dependencies) are updated.
1055 @section Release 0.5
1058 Trivial small fix in default niceness level of @command{nncp-file}
1059 and @command{nncp-freq} commands.
1063 @section Release 0.4
1067 Small fix in @command{nncp-call}, @command{nncp-caller},
1068 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
1072 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
1073 and more convenient to use.
1076 @command{nncp-mincfg} command appeared: helper allowing to create
1077 minimalistic stripped down configuration file without private keys, that
1078 is useful during @command{nncp-xfer} usage.
1083 @section Release 0.3
1085 @item Fixed compatibility with Go 1.6.
1089 @section Release 0.2
1093 @strong{Incompatible} packet's format change (magic number is changed
1094 too): size field is encrypted and is not send in plaintext anymore.
1097 @option{-minsize} option gives ability to automatically pad outgoing
1098 packets to specified minimal size.
1101 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
1102 always check new @emph{tx} packets appearance in the background while
1103 connected. Remote side is immediately notified.
1106 @option{-onlinedeadline} option gives ability to configure timeout of
1107 inactivity of online connection, when it could be disconnected. It could
1108 be used to keep connection alive for a long time.
1111 @option{-maxonlinetime} option gives ability to set maximal allowable
1112 online connection aliveness time.
1115 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
1118 @command{nncp-pkt} command can decompress the data.