5 See also this page @ref{Новости, on russian}.
12 Fixed @command{nncp-bundle} workability.
15 Mistakenly @option{-mcd-wait} option was enabled by default in
19 Ability to override internal default timeout for online protocol through
20 @env{$NNCPDEADLINE} environment variable. Can be useful for very high
24 NNCP builds on OpenBSD.
29 @section Release 8.4.0
33 Multicast related interface names (@code{mcd-listen} and @code{mcd-send}
34 configuration options) are now regular expressions. By default
35 @command{nncp-cfgnew} uncomments them now with @code{.*} interface name.
38 @command{nncp-call} command has @option{-mcd-wait} option to wait for
39 multicast packet about node's address.
42 @command{nncp-file} command skips everything that is neither regular
43 file nor directory during pax-archive creation.
48 @section Release 8.3.0
52 Fixed building issues on 32-bit systems.
57 @section Release 8.2.0
61 Yggdrasil uses pure-Go IPv6+TCP network stack, instead of naked μTP
62 transport protocol, making it able to work as an ordinary TCP server
63 inside overlay network.
66 Yggdrasil's @code{prv;bind1,bind2;pub...}-like configuration strings are
67 replaced with URL-like ones (@code{yggdrasils://PRV?bind=BIND1&bind=BIND2&pub=PUB}).
70 Ability to pass multicast-related parameters to Yggdrasil configuration.
73 @command{nncp-daemon} is able to listen on both TCP and Yggdrasil-driven
74 sockets simultaneously.
77 @command{nncp-daemon}'s listening on peering endpoint socket is optional
78 -- you can be reached through the peers.
83 @section Release 8.1.0
87 @command{nncp-cfgdir} does not require @code{self} section existence in
91 Ability to act as Yggdrasil network client, using online protocol on top of it.
96 @section Release 8.0.2
100 Fixed sending ability to areas.
105 @section Release 8.0.1
109 Fixed incorrect @code{freq.chunked} value calculation. If it was missed,
110 then chunked transfer mode was forcefully turned on anyway.
113 Fixed incorrect full file's size calculation in @file{.nncp.meta}.
118 @section Release 8.0.0
122 @strong{Incompatible} encrypted packet format change: payload and pad
123 sizes are sent in-bound in the encrypted stream. That gives ability to
124 streamingly create encrypted packets, without knowing sizes in advance,
125 without creating temporary file or buffer data in memory.
128 Proper encrypted packet padding verification is done now. This is not
129 critical issue, but previously neither padding value, nor its size were
130 authenticated, giving ability to iteratively strip trailing bytes and
131 determine payload's size by observing the reaction of the encrypted
135 @command{nncp-exec} loses its @option{-use-tmp} option, because of
136 streaming-compatible encrypted packets format.
139 @command{nncp-file} and @command{nncp-exec} commands have
140 @option{-maxsize} option, limiting maximal resulting encrypted packet's
141 maximal size (returning error if it is exceeded). Could be useful,
142 because no payload size could be known in advance.
147 @section Release 7.7.0
151 Experimental @code{kqueue} and @code{inotify} based notifications
152 support about spool directory changes, for reducing their often reading
156 @file{.seen} and @file{.hdr} files moved to @file{seen/} and @file{hdr/}
157 subdirectories, for faster scanning of spool directories.
158 Current files migration required:
161 $ find $NNCPSPOOL -type f -name "*.hdr" -exec rm @{@} +
163 $ find $NNCPSPOOL -type d -name rx | while read rx ; do
166 find . -type f -name "*.seen" | while read fn ; do
167 mv $fn seen/$@{fn%.seen@}
171 $ find $NNCPSPOOL -type d -name area | while read area ; do
172 find $area -type f -name "*.seen" | while read fn ; do
181 @section Release 7.6.0
185 Logging may be done to specified opened file descriptor
186 (@env{$NNCPLOG=FD:5} for example).
187 That is friendly to use under @command{daemontools}.
190 Added additional checks of public keys existence in configuration file,
191 preventing some commands from failing.
196 @section Release 7.5.1
200 NNCP builds on NetBSD.
205 @section Release 7.5.0
209 @command{nncp-daemon} is compatible with UCSPI-TCP interface, so log
210 will contain remote side's address (when running under appropriate
211 utility). @option{-ucspi} option should be used instead of @option{-inetd}.
214 @command{nncp-call} can be UCSPI-TCP client, using @option{-ucspi} option.
217 Do not exit if some of MCD network interfaces can not be listened --
218 only warn about that.
223 @section Release 7.4.0
227 Fixed simultaneous @command{nncp-daemon} and @command{nncp-caller} MCD work.
232 @section Release 7.3.2
236 @command{hjson-cli} utility builds in vendor-mode now.
241 @section Release 7.3.1
245 Fixed possibly left opened file descriptor in online commands.
248 Severely decreased memory usage of MTH hashing.
253 @section Release 7.3.0
257 Fixed some workability problems on 32-bit systems with big files.
260 Ability to use directory with a bunch of files as a configuration.
261 @command{nncp-cfgdir} command appeared.
266 @section Release 7.2.1
270 Small optimizations in online commands.
275 @section Release 7.2.0
279 @command{nncp-trns} command appeared for manual transition packets creation.
282 If destination node of transitional packet has non empty @option{via}
283 route, then do not ignore, but use it.
286 Do not relay multicast packet to area message's originator, that
287 obviously has seen its own packet.
290 Much less memory usage during MTH hashing when offset is zero: when
291 packet is not resumed, but for example checked with @command{nncp-check}
297 @section Release 7.1.1
301 Fixed failing directories fsync after @file{.seen} file creation.
306 @section Release 7.1.0
310 Multicasting areas feature appeared. Implemented merely by an additional
311 plain packet type with @command{nncp-toss}, @command{nncp-file} and
312 @command{nncp-exec} commands modification.
315 Fixed workability of @command{nncp-file} and @command{nncp-exec}
316 commands, that use temporary file (stdin and @option{-use-tmp}).
319 Fixed disappearing bad return code in @command{nncp-exec} command.
322 Fixed invalid @file{.hdr} generation when transitional packets are used.
325 @option{-all} option appeared in @command{nncp-rm} command, applying to
326 all the nodes at once.
329 @option{-cycle} option appeared in @command{nncp-check} command, looping
330 the check in infinite cycle.
333 @command{nncp-rm} command can take node alias name.
336 @command{nncp-pkt} can parse @file{.hdr} files.
341 @section Release 7.0.0
345 Minimal required Go version 1.13.
348 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
349 Because of that, there are backward @strong{incompatible} changes of
350 encrypted files (everything laying in the spool directory) and
351 @file{.meta} files of chunked transfer.
353 Current implementation is far from being optimal: it lacks
354 parallelizable calculations and has higher memory consumption: nearly
355 512 KiB for each 1 GiB of file's data. Future performance and memory
356 size optimizations should not lead to packet's format change. But it is
357 still several times faster than BLAKE2b.
360 Resumed online downloads, because of MTH, require reading only of the
361 preceding part of file, not the whole one as was before.
364 @command{nncp-hash} utility appeared for calculating file's MTH hash.
367 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
368 packets. Lowering number of used primitives. Also, its encrypted
369 packet's header is used as an associated data during encryption.
372 MultiCast Discovery uses
373 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
376 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
379 @command{nncp-stat} reports about partly downloaded packets.
382 Updated dependencies.
387 @section Release 6.6.0
391 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
392 commands wait for all background checksummers completion after
393 connection is finished.
396 Added possibility of address determining through multicast announcement
397 in local area network, so called MCD (MultiCast Discovery).
402 @section Release 6.5.0
406 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
409 Fixed possible bad return code ignoring in automatic tosser.
412 Fixed race during file descriptors closing when online protocol call is
413 finished, that could lead to write error of received packet fragment.
416 Kill all packet transmission progress bars in @command{nncp-daemon},
417 @command{nncp-call} and @command{nncp-caller} when call is finished.
422 @section Release 6.4.0
426 Fixed possible race in online protocol, that lead to panic.
431 @section Release 6.3.0
435 Fixed possible panic while showing progress during online protocol.
440 @section Release 6.2.1
444 Three places in logs contained excess @code{%s}.
449 @section Release 6.2.0
453 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
456 Yet another logging refactoring and simplification.
457 Should be no visible differences to the end user.
462 @section Release 6.1.0
466 Optimization: most commands do not keep opened file descriptors now.
467 Previously you can exceed maximal number of opened files if you have got
468 many packets in the spool directory.
471 Optimization: do not close file descriptor of the file we download
472 online. Previously each chunk lead to expensive open/close calls.
475 Online downloaded files are saved with @file{.nock} (non-checksummed)
476 suffix, waiting either for @command{nncp-check}, or online daemons to
477 perform integrity check.
480 Optimization: files, that are not resumed, are checksummed immediately
481 during the online download, skipping @file{.nock}-intermediate step.
484 Ability to store encrypted packet's header in @file{.hdr} file, close to
485 the packet itself. That can greatly increase performance of packets
486 listing on filesystems with big block's size.
491 @section Release 6.0.0
495 Log uses human readable and easy machine parseable
496 @url{https://www.gnu.org/software/recutils/, recfile} format for the
497 records, instead of structured RFC 3339 lines. Old logs are not readable
498 by @command{nncp-log} anymore.
501 @option{-autotoss*} option workability with @command{nncp-daemon}'s
502 @option{-inetd} mode.
505 Call's @option{when-tx-exists} allows to make a call only when outbound
506 packets exists. Combined with seconds-aware cron expression that can be
507 used as some kind of auto dialler.
510 @command{nncp-cronexpr} command allows you to check validity and
511 expectations of specified cron expression.
516 @section Release 5.6.0
520 @option{-autotoss*} option runs tosser not after the call, but every
521 second while it is active.
524 @option{autotoss}, @option{autotoss-doseen},
525 @option{autotoss-nofile}, @option{autotoss-nofreq},
526 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
527 @option{calls} configuration section. You can configure per-call
528 automatic tosser options.
531 Use vendoring, instead of @env{$GOPATH} overriding during tarball
532 installation, because current minimal Go's version is 1.12 and it
538 @section Release 5.5.1
542 Respect for @env{$BINDIR}, @env{$INFODIR} and @env{$DOCDIR} environment
543 variables in @file{config} during installation.
548 @section Release 5.5.0
552 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
553 @command{nncp-bundle} and @command{nncp-stat}.
556 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
559 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
560 options now. Uncompressed packets are not compatible with previous NNCP
564 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
565 have @option{-autotoss*} options for running tosser after call is ended.
568 Updated dependencies. Minimal required Go version is 1.12.
573 @section Release 5.4.1
577 Fixed @code{SENDMAIL} variable usage during the build.
582 @section Release 5.4.0
586 Updated dependencies.
589 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
590 This should not influence package maintainers, because minimal @command{redo}
591 implementation is included in tarball.
596 @section Release 5.3.3
600 More various error checks.
603 Updated dependencies.
608 @section Release 5.3.2
612 Fixed incorrect logic of @option{onlinedeadline} timeout, where
613 connection won't take into account incoming packets events and will
614 forcefully disconnect.
619 @section Release 5.3.1
623 Fixed @option{onlinedeadline} workability with call addresses that use
624 external commands (@verb{#"|somecmd"#}).
627 @command{nncp-stat} has @option{-pkt} option displaying information
628 about each packet in the spool.
633 @section Release 5.3.0
637 Progress messages contain prefix, describing the running action.
640 Fixed not occurring handshake messages padding.
643 Finish all SP protocol related goroutines, less memory leak.
646 SP protocol generates less socket write calls, thus generating less TCP
650 Check @option{onlinedeadline} and @option{maxonlinetime} options every
651 second, independently from socket reads (up to 10 seconds).
654 Once per minute, if no other traffic exists, PING packets are sent in
655 SP-connection. That allows faster determining of connection unworkability.
658 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
663 @section Release 5.2.1
667 Fixed SP protocol error handling, sometimes causing program panic.
672 @section Release 5.2.0
676 Most commands by default show oneline operations progress.
677 @option{-progress}, @option{-noprogress} command line options,
678 @option{noprogress} configuration file option appeared.
681 Fixed incorrect @command{nncp-check} command return code, that returned
682 bad code when everything is good.
685 Free disk space check during @command{nncp-bundle -rx} call.
690 @section Release 5.1.2
694 @strong{Critical} vulnerability: remote peers authentication could lead
695 to incorrect identification of remote side, allowing foreign encrypted
699 Bugfix: private and public Noise keys were swapped in newly created
700 configuration files, that lead to inability to authenticate online peers.
703 Explicit directories fsync-ing for guaranteed files renaming.
708 @section Release 5.1.1
712 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
717 @section Release 5.1.0
721 @command{nncp-file} can send directories, automatically creating pax
725 Free disk space is checked during outbound packets creation.
728 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
729 file options replaced with the structure:
730 @option{freq: @{path: @dots{}, minsize: @dots{}, chunked: @dots{}@}}.
733 Added @option{freq.maxsize} configuration file option, forbidding of
734 freq sending larger than specified size.
737 Ability to notify about successfully executed commands (exec) with
738 @option{notify.exec} configuration file option.
743 @section Release 5.0.0
747 @strong{Incompatible} configuration file format change: YAML is
748 replaced with Hjson, due to its simplicity, without noticeable lack
749 of either functionality or convenience.
752 @strong{Incompatible} plain packet format changes. Older versions are
753 not supported. @code{zlib} compression is replaced with
754 @code{Zstandard}, due to its speed and efficiency, despite library
755 version is not mature enough.
758 Ability to call remote nodes via pipe call of external command, not only
762 @command{nncp-cfgnew} generates configuration file with many
763 comments. @option{-nocomments} option can be used for an old
767 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
768 avoid possible collisions with @file{.nncp.chunkCTR}.
771 Ability to override process umask through configuration file option.
774 Files and directories are created with 666/777 permissions by default,
775 allowing control with @command{umask}.
778 Updated dependencies.
781 Full usage of go modules for dependencies management
782 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
785 Forbid any later GNU GPL version autousage
786 (project's licence now is GNU GPLv3-only).
793 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
801 @strong{Incompatible} encrypted and eblob packet format change: AEAD
802 encryption mode with 128 KiB blocks is used now, because previously
803 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
804 decrypted data to external command. Older versions are not supported.
807 Available free space checking before copying in @command{nncp-xfer},
808 @command{nncp-daemon}, @command{nncp-call(er)}.
811 @command{nncp-call} has ability only to list packets on remote node,
812 without their transmission.
815 @command{nncp-call} has ability to transfer only specified packets.
818 Workability of @option{xxrate} preference in @option{calls}
819 configuration file section.
822 Dependant libraries are updated.
828 Begin using of @code{go.mod} subsystem.
835 @item @command{nncp-daemon} can be run as @command{inetd}-service.
843 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
844 if @file{.seen} exists and treat it like file was already downloaded.
845 Possibly it was transferred out-of-bound and remote side needs to be
849 If higher priority packet is spooled, then @command{nncp-daemon} will
850 queue its sending first, interrupting lower priority transmissions.
853 Simple packet rate limiter added to online-related tools
854 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
857 Ability to specify niceness with symbolic notation:
858 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
861 Changed default niceness levels:
862 for @command{nncp-exec} from 64 to 96,
863 for @command{nncp-freq} from 64 to 160,
864 for @command{nncp-file} from 196 to 224.
872 @strong{Incompatible} @emph{bundle} archive format changes and
873 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
874 valid tar archives, but Go 1.9 made them invalid because of long paths
875 inside. NNCP accidentally was dependant on that bug. Explicit adding of
876 @file{NNCP/} directory in archive restores workability with valid tar
884 Ability to disable relaying at all using @verb{|-via -|} command line option.
892 @strong{Incompatible} plain packet format changes. Older versions are
896 Ability to queue remote command execution, by configuring @option{exec}
897 option in configuration file and using @command{nncp-exec} command:
900 @command{nncp-mail} command is replaced with more flexible
901 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
902 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
904 @option{sendmail} configuration file option is replaced with
905 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
906 @verb{|exec: sendmail: [...]|}.
910 Ability to override @option{via} configuration option for destination
911 node via @option{-via} command line option for following commands:
912 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
915 Chunked files, having size less than specified chunk size, will be sent
916 as an ordinary single file.
919 Exec commands are invoked with additional @env{$NNCP_NICE} and
920 @env{$NNCP_SELF} environment variables.
923 Files, that are sent as a reply to freq, have niceness level taken from
924 the freq packet. You can set desired niceness during @command{nncp-freq}
925 invocation using @option{-replynice} option.
928 @command{nncp-toss} command can ignore specified packet types during
929 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
933 @command{nncp-file} command uses
934 @option{FreqMinSize}/@option{FreqChunked} configuration file options
935 for @option{-minsize}/@option{-chunked} by default. You can turn this
936 off by specifying zero value.
945 @strong{Incompatible} encrypted/eblob packet format changes. Older
946 versions are not supported.
949 Twofish encryption algorithm is replaced with ChaCha20. It is much more
950 faster. One cryptographic primitive less.
953 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
954 another cryptographic primitive less (assuming that BLAKE2X is nearly
955 identical to BLAKE2).
964 @strong{Incompatible} encrypted packet format changes. Older versions
968 @command{nncp-bundle} command can either create stream of encrypted
969 packets, or digest it. It is useful when dealing with
970 @code{stdin}/@code{stdout} based transmission methods (like writing to
971 CD-ROM without intermediate prepared ISO image and working with tape
975 @command{nncp-toss} is able to create @file{.seen} files preventing
976 duplicate packets receiving.
979 Single background checksum verifier worker is allowed in
980 @command{nncp-call}. This is helpful when thousands of small inbound
981 packets could create many goroutines.
984 Ability to override path to spool directory and logfile through either
985 command line argument, or environment variable.
988 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
989 @file{.part}, @file{.lock} and temporary files.
994 @section Release 0.12
996 @item Sendmail command is called with @env{$NNCP_SENDER} environment variable.
1000 @section Release 0.11
1002 @item @command{nncp-stat}'s command output is sorted by node name.
1006 @section Release 0.10
1009 @command{nncp-freq}'s @file{DST} argument is optional now. Last
1010 @file{SRC} path's element will be used by default.
1014 @section Release 0.9
1017 Fix @option{-rx}/@option{-tx} arguments processing in
1018 @command{nncp-call} command. They were ignored.
1022 @section Release 0.8
1025 Little bugfix in @command{nncp-file} command, where @option{-minsize}
1026 option for unchunked transfer was not in KiBs, but in bytes.
1030 @section Release 0.7
1034 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
1035 encrypted temporary file for that.
1038 Chunked files transmission appeared with corresponding
1039 @command{nncp-reass} command and @option{freqchunked} configuration file
1040 entry. Useful for transferring big files over small storage devices.
1043 @option{freqminsize} configuration file option, analogue to
1044 @option{-minsize} one.
1047 @command{nncp-xfer}'s @option{-force} option is renamed to
1048 @option{-mkdir} for clarity.
1051 @option{-minsize} option is specified in KiBs, not bytes, for
1055 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
1056 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
1057 common prefix and are grouped together for convenience.
1060 @command{nncp-cfgenc} command appeared, allowing configuration file
1061 encryption/decryption, for keeping it safe without any either OpenPGP or
1062 similar tools usage.
1065 Cryptographic libraries (dependencies) are updated.
1070 @section Release 0.6
1072 @item Small @command{nncp-rm} command appeared.
1073 @item Cryptographic libraries (dependencies) are updated.
1077 @section Release 0.5
1080 Trivial small fix in default niceness level of @command{nncp-file}
1081 and @command{nncp-freq} commands.
1085 @section Release 0.4
1089 Small fix in @command{nncp-call}, @command{nncp-caller},
1090 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
1094 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
1095 and more convenient to use.
1098 @command{nncp-mincfg} command appeared: helper allowing to create
1099 minimalistic stripped down configuration file without private keys, that
1100 is useful during @command{nncp-xfer} usage.
1105 @section Release 0.3
1107 @item Fixed compatibility with Go 1.6.
1111 @section Release 0.2
1115 @strong{Incompatible} packet's format change (magic number is changed
1116 too): size field is encrypted and is not send in plaintext anymore.
1119 @option{-minsize} option gives ability to automatically pad outgoing
1120 packets to specified minimal size.
1123 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
1124 always check new @emph{tx} packets appearance in the background while
1125 connected. Remote side is immediately notified.
1128 @option{-onlinedeadline} option gives ability to configure timeout of
1129 inactivity of online connection, when it could be disconnected. It could
1130 be used to keep connection alive for a long time.
1133 @option{-maxonlinetime} option gives ability to set maximal allowable
1134 online connection aliveness time.
1137 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
1140 @command{nncp-pkt} command can decompress the data.