4 See also this page @ref{Новости, on russian}.
11 Fixed @command{nncp-bundle} workability.
14 Mistakenly @option{-mcd-wait} option was enabled by default in
18 Ability to override internal default timeout for online protocol through
19 @env{$NNCPDEADLINE} environment variable. Can be useful for very high
25 @section Release 8.4.0
29 Multicast related interface names (@code{mcd-listen} and @code{mcd-send}
30 configuration options) are now regular expressions. By default
31 @command{nncp-cfgnew} uncomments them now with @code{.*} interface name.
34 @command{nncp-call} command has @option{-mcd-wait} option to wait for
35 multicast packet about node's address.
38 @command{nncp-file} command skips everything that is neither regular
39 file nor directory during pax-archive creation.
44 @section Release 8.3.0
48 Fixed building issues on 32-bit systems.
53 @section Release 8.2.0
57 Yggdrasil uses pure-Go IPv6+TCP network stack, instead of naked μTP
58 transport protocol, making it able to work as an ordinary TCP server
59 inside overlay network.
62 Yggdrasil's @code{prv;bind1,bind2;pub...}-like configuration strings are
63 replaced with URL-like ones (@code{yggdrasils://PRV?bind=BIND1&bind=BIND2&pub=PUB}).
66 Ability to pass multicast-related parameters to Yggdrasil configuration.
69 @command{nncp-daemon} is able to listen on both TCP and Yggdrasil-driven
70 sockets simultaneously.
73 @command{nncp-daemon}'s listening on peering endpoint socket is optional
74 -- you can be reached through the peers.
79 @section Release 8.1.0
83 @command{nncp-cfgdir} does not require @code{self} section existence in
87 Ability to act as Yggdrasil network client, using online protocol on top of it.
92 @section Release 8.0.2
96 Fixed sending ability to areas.
101 @section Release 8.0.1
105 Fixed incorrect @code{freq.chunked} value calculation. If it was missed,
106 then chunked transfer mode was forcefully turned on anyway.
109 Fixed incorrect full file's size calculation in @file{.nncp.meta}.
114 @section Release 8.0.0
118 @strong{Incompatible} encrypted packet format change: payload and pad
119 sizes are sent in-bound in the encrypted stream. That gives ability to
120 streamingly create encrypted packets, without knowing sizes in advance,
121 without creating temporary file or buffer data in memory.
124 Proper encrypted packet padding verification is done now. This is not
125 critical issue, but previously neither padding value, nor its size were
126 authenticated, giving ability to iteratively strip trailing bytes and
127 determine payload's size by observing the reaction of the encrypted
131 @command{nncp-exec} loses its @option{-use-tmp} option, because of
132 streaming-compatible encrypted packets format.
135 @command{nncp-file} and @command{nncp-exec} commands have
136 @option{-maxsize} option, limiting maximal resulting encrypted packet's
137 maximal size (returning error if it is exceeded). Could be useful,
138 because no payload size could be known in advance.
143 @section Release 7.7.0
147 Experimental @code{kqueue} and @code{inotify} based notifications
148 support about spool directory changes, for reducing their often reading
152 @file{.seen} and @file{.hdr} files moved to @file{seen/} and @file{hdr/}
153 subdirectories, for faster scanning of spool directories.
154 Current files migration required:
157 $ find $NNCPSPOOL -type f -name "*.hdr" -exec rm @{@} +
159 $ find $NNCPSPOOL -type d -name rx | while read rx ; do
162 find . -type f -name "*.seen" | while read fn ; do
163 mv $fn seen/$@{fn%.seen@}
167 $ find $NNCPSPOOL -type d -name area | while read area ; do
168 find $area -type f -name "*.seen" | while read fn ; do
177 @section Release 7.6.0
181 Logging may be done to specified opened file descriptor
182 (@env{$NNCPLOG=FD:5} for example).
183 That is friendly to use under @command{daemontools}.
186 Added additional checks of public keys existence in configuration file,
187 preventing some commands from failing.
192 @section Release 7.5.1
196 NNCP builds on NetBSD.
201 @section Release 7.5.0
205 @command{nncp-daemon} is compatible with UCSPI-TCP interface, so log
206 will contain remote side's address (when running under appropriate
207 utility). @option{-ucspi} option should be used instead of @option{-inetd}.
210 @command{nncp-call} can be UCSPI-TCP client, using @option{-ucspi} option.
213 Do not exit if some of MCD network interfaces can not be listened --
214 only warn about that.
219 @section Release 7.4.0
223 Fixed simultaneous @command{nncp-daemon} and @command{nncp-caller} MCD work.
228 @section Release 7.3.2
232 @command{hjson-cli} utility builds in vendor-mode now.
237 @section Release 7.3.1
241 Fixed possibly left opened file descriptor in online commands.
244 Severely decreased memory usage of MTH hashing.
249 @section Release 7.3.0
253 Fixed some workability problems on 32-bit systems with big files.
256 Ability to use directory with a bunch of files as a configuration.
257 @command{nncp-cfgdir} command appeared.
262 @section Release 7.2.1
266 Small optimizations in online commands.
271 @section Release 7.2.0
275 @command{nncp-trns} command appeared for manual transition packets creation.
278 If destination node of transitional packet has non empty @option{via}
279 route, then do not ignore, but use it.
282 Do not relay multicast packet to area message's originator, that
283 obviously has seen its own packet.
286 Much less memory usage during MTH hashing when offset is zero: when
287 packet is not resumed, but for example checked with @command{nncp-check}
293 @section Release 7.1.1
297 Fixed failing directories fsync after @file{.seen} file creation.
302 @section Release 7.1.0
306 Multicasting areas feature appeared. Implemented merely by an additional
307 plain packet type with @command{nncp-toss}, @command{nncp-file} and
308 @command{nncp-exec} commands modification.
311 Fixed workability of @command{nncp-file} and @command{nncp-exec}
312 commands, that use temporary file (stdin and @option{-use-tmp}).
315 Fixed disappearing bad return code in @command{nncp-exec} command.
318 Fixed invalid @file{.hdr} generation when transitional packets are used.
321 @option{-all} option appeared in @command{nncp-rm} command, applying to
322 all the nodes at once.
325 @option{-cycle} option appeared in @command{nncp-check} command, looping
326 the check in infinite cycle.
329 @command{nncp-rm} command can take node alias name.
332 @command{nncp-pkt} can parse @file{.hdr} files.
337 @section Release 7.0.0
341 Minimal required Go version 1.13.
344 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
345 Because of that, there are backward @strong{incompatible} changes of
346 encrypted files (everything laying in the spool directory) and
347 @file{.meta} files of chunked transfer.
349 Current implementation is far from being optimal: it lacks
350 parallelizable calculations and has higher memory consumption: nearly
351 512 KiB for each 1 GiB of file's data. Future performance and memory
352 size optimizations should not lead to packet's format change. But it is
353 still several times faster than BLAKE2b.
356 Resumed online downloads, because of MTH, require reading only of the
357 preceding part of file, not the whole one as was before.
360 @command{nncp-hash} utility appeared for calculating file's MTH hash.
363 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
364 packets. Lowering number of used primitives. Also, its encrypted
365 packet's header is used as an associated data during encryption.
368 MultiCast Discovery uses
369 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
372 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
375 @command{nncp-stat} reports about partly downloaded packets.
378 Updated dependencies.
383 @section Release 6.6.0
387 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
388 commands wait for all background checksummers completion after
389 connection is finished.
392 Added possibility of address determining through multicast announcement
393 in local area network, so called MCD (MultiCast Discovery).
398 @section Release 6.5.0
402 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
405 Fixed possible bad return code ignoring in automatic tosser.
408 Fixed race during file descriptors closing when online protocol call is
409 finished, that could lead to write error of received packet fragment.
412 Kill all packet transmission progress bars in @command{nncp-daemon},
413 @command{nncp-call} and @command{nncp-caller} when call is finished.
418 @section Release 6.4.0
422 Fixed possible race in online protocol, that lead to panic.
427 @section Release 6.3.0
431 Fixed possible panic while showing progress during online protocol.
436 @section Release 6.2.1
440 Three places in logs contained excess @code{%s}.
445 @section Release 6.2.0
449 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
452 Yet another logging refactoring and simplification.
453 Should be no visible differences to the end user.
458 @section Release 6.1.0
462 Optimization: most commands do not keep opened file descriptors now.
463 Previously you can exceed maximal number of opened files if you have got
464 many packets in the spool directory.
467 Optimization: do not close file descriptor of the file we download
468 online. Previously each chunk lead to expensive open/close calls.
471 Online downloaded files are saved with @file{.nock} (non-checksummed)
472 suffix, waiting either for @command{nncp-check}, or online daemons to
473 perform integrity check.
476 Optimization: files, that are not resumed, are checksummed immediately
477 during the online download, skipping @file{.nock}-intermediate step.
480 Ability to store encrypted packet's header in @file{.hdr} file, close to
481 the packet itself. That can greatly increase performance of packets
482 listing on filesystems with big block's size.
487 @section Release 6.0.0
491 Log uses human readable and easy machine parseable
492 @url{https://www.gnu.org/software/recutils/, recfile} format for the
493 records, instead of structured RFC 3339 lines. Old logs are not readable
494 by @command{nncp-log} anymore.
497 @option{-autotoss*} option workability with @command{nncp-daemon}'s
498 @option{-inetd} mode.
501 Call's @option{when-tx-exists} allows to make a call only when outbound
502 packets exists. Combined with seconds-aware cron expression that can be
503 used as some kind of auto dialler.
506 @command{nncp-cronexpr} command allows you to check validity and
507 expectations of specified cron expression.
512 @section Release 5.6.0
516 @option{-autotoss*} option runs tosser not after the call, but every
517 second while it is active.
520 @option{autotoss}, @option{autotoss-doseen},
521 @option{autotoss-nofile}, @option{autotoss-nofreq},
522 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
523 @option{calls} configuration section. You can configure per-call
524 automatic tosser options.
527 Use vendoring, instead of @env{$GOPATH} overriding during tarball
528 installation, because current minimal Go's version is 1.12 and it
534 @section Release 5.5.1
538 Respect for @env{$BINDIR}, @env{$INFODIR} and @env{$DOCDIR} environment
539 variables in @file{config} during installation.
544 @section Release 5.5.0
548 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
549 @command{nncp-bundle} and @command{nncp-stat}.
552 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
555 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
556 options now. Uncompressed packets are not compatible with previous NNCP
560 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
561 have @option{-autotoss*} options for running tosser after call is ended.
564 Updated dependencies. Minimal required Go version is 1.12.
569 @section Release 5.4.1
573 Fixed @code{SENDMAIL} variable usage during the build.
578 @section Release 5.4.0
582 Updated dependencies.
585 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
586 This should not influence package maintainers, because minimal @command{redo}
587 implementation is included in tarball.
592 @section Release 5.3.3
596 More various error checks.
599 Updated dependencies.
604 @section Release 5.3.2
608 Fixed incorrect logic of @option{onlinedeadline} timeout, where
609 connection won't take into account incoming packets events and will
610 forcefully disconnect.
615 @section Release 5.3.1
619 Fixed @option{onlinedeadline} workability with call addresses that use
620 external commands (@verb{#"|somecmd"#}).
623 @command{nncp-stat} has @option{-pkt} option displaying information
624 about each packet in the spool.
629 @section Release 5.3.0
633 Progress messages contain prefix, describing the running action.
636 Fixed not occurring handshake messages padding.
639 Finish all SP protocol related goroutines, less memory leak.
642 SP protocol generates less socket write calls, thus generating less TCP
646 Check @option{onlinedeadline} and @option{maxonlinetime} options every
647 second, independently from socket reads (up to 10 seconds).
650 Once per minute, if no other traffic exists, PING packets are sent in
651 SP-connection. That allows faster determining of connection unworkability.
654 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
659 @section Release 5.2.1
663 Fixed SP protocol error handling, sometimes causing program panic.
668 @section Release 5.2.0
672 Most commands by default show oneline operations progress.
673 @option{-progress}, @option{-noprogress} command line options,
674 @option{noprogress} configuration file option appeared.
677 Fixed incorrect @command{nncp-check} command return code, that returned
678 bad code when everything is good.
681 Free disk space check during @command{nncp-bundle -rx} call.
686 @section Release 5.1.2
690 @strong{Critical} vulnerability: remote peers authentication could lead
691 to incorrect identification of remote side, allowing foreign encrypted
695 Bugfix: private and public Noise keys were swapped in newly created
696 configuration files, that lead to inability to authenticate online peers.
699 Explicit directories fsync-ing for guaranteed files renaming.
704 @section Release 5.1.1
708 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
713 @section Release 5.1.0
717 @command{nncp-file} can send directories, automatically creating pax
721 Free disk space is checked during outbound packets creation.
724 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
725 file options replaced with the structure:
726 @option{freq: @{path: @dots{}, minsize: @dots{}, chunked: @dots{}@}}.
729 Added @option{freq.maxsize} configuration file option, forbidding of
730 freq sending larger than specified size.
733 Ability to notify about successfully executed commands (exec) with
734 @option{notify.exec} configuration file option.
739 @section Release 5.0.0
743 @strong{Incompatible} configuration file format change: YAML is
744 replaced with Hjson, due to its simplicity, without noticeable lack
745 of either functionality or convenience.
748 @strong{Incompatible} plain packet format changes. Older versions are
749 not supported. @code{zlib} compression is replaced with
750 @code{Zstandard}, due to its speed and efficiency, despite library
751 version is not mature enough.
754 Ability to call remote nodes via pipe call of external command, not only
758 @command{nncp-cfgnew} generates configuration file with many
759 comments. @option{-nocomments} option can be used for an old
763 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
764 avoid possible collisions with @file{.nncp.chunkCTR}.
767 Ability to override process umask through configuration file option.
770 Files and directories are created with 666/777 permissions by default,
771 allowing control with @command{umask}.
774 Updated dependencies.
777 Full usage of go modules for dependencies management
778 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
781 Forbid any later GNU GPL version autousage
782 (project's licence now is GNU GPLv3-only).
789 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
797 @strong{Incompatible} encrypted and eblob packet format change: AEAD
798 encryption mode with 128 KiB blocks is used now, because previously
799 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
800 decrypted data to external command. Older versions are not supported.
803 Available free space checking before copying in @command{nncp-xfer},
804 @command{nncp-daemon}, @command{nncp-call(er)}.
807 @command{nncp-call} has ability only to list packets on remote node,
808 without their transmission.
811 @command{nncp-call} has ability to transfer only specified packets.
814 Workability of @option{xxrate} preference in @option{calls}
815 configuration file section.
818 Dependant libraries are updated.
824 Begin using of @code{go.mod} subsystem.
831 @item @command{nncp-daemon} can be run as @command{inetd}-service.
839 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
840 if @file{.seen} exists and treat it like file was already downloaded.
841 Possibly it was transferred out-of-bound and remote side needs to be
845 If higher priority packet is spooled, then @command{nncp-daemon} will
846 queue its sending first, interrupting lower priority transmissions.
849 Simple packet rate limiter added to online-related tools
850 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
853 Ability to specify niceness with symbolic notation:
854 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
857 Changed default niceness levels:
858 for @command{nncp-exec} from 64 to 96,
859 for @command{nncp-freq} from 64 to 160,
860 for @command{nncp-file} from 196 to 224.
868 @strong{Incompatible} @emph{bundle} archive format changes and
869 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
870 valid tar archives, but Go 1.9 made them invalid because of long paths
871 inside. NNCP accidentally was dependant on that bug. Explicit adding of
872 @file{NNCP/} directory in archive restores workability with valid tar
880 Ability to disable relaying at all using @verb{|-via -|} command line option.
888 @strong{Incompatible} plain packet format changes. Older versions are
892 Ability to queue remote command execution, by configuring @option{exec}
893 option in configuration file and using @command{nncp-exec} command:
896 @command{nncp-mail} command is replaced with more flexible
897 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
898 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
900 @option{sendmail} configuration file option is replaced with
901 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
902 @verb{|exec: sendmail: [...]|}.
906 Ability to override @option{via} configuration option for destination
907 node via @option{-via} command line option for following commands:
908 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
911 Chunked files, having size less than specified chunk size, will be sent
912 as an ordinary single file.
915 Exec commands are invoked with additional @env{$NNCP_NICE} and
916 @env{$NNCP_SELF} environment variables.
919 Files, that are sent as a reply to freq, have niceness level taken from
920 the freq packet. You can set desired niceness during @command{nncp-freq}
921 invocation using @option{-replynice} option.
924 @command{nncp-toss} command can ignore specified packet types during
925 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
929 @command{nncp-file} command uses
930 @option{FreqMinSize}/@option{FreqChunked} configuration file options
931 for @option{-minsize}/@option{-chunked} by default. You can turn this
932 off by specifying zero value.
941 @strong{Incompatible} encrypted/eblob packet format changes. Older
942 versions are not supported.
945 Twofish encryption algorithm is replaced with ChaCha20. It is much more
946 faster. One cryptographic primitive less.
949 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
950 another cryptographic primitive less (assuming that BLAKE2X is nearly
951 identical to BLAKE2).
960 @strong{Incompatible} encrypted packet format changes. Older versions
964 @command{nncp-bundle} command can either create stream of encrypted
965 packets, or digest it. It is useful when dealing with
966 @code{stdin}/@code{stdout} based transmission methods (like writing to
967 CD-ROM without intermediate prepared ISO image and working with tape
971 @command{nncp-toss} is able to create @file{.seen} files preventing
972 duplicate packets receiving.
975 Single background checksum verifier worker is allowed in
976 @command{nncp-call}. This is helpful when thousands of small inbound
977 packets could create many goroutines.
980 Ability to override path to spool directory and logfile through either
981 command line argument, or environment variable.
984 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
985 @file{.part}, @file{.lock} and temporary files.
990 @section Release 0.12
992 @item Sendmail command is called with @env{$NNCP_SENDER} environment variable.
996 @section Release 0.11
998 @item @command{nncp-stat}'s command output is sorted by node name.
1002 @section Release 0.10
1005 @command{nncp-freq}'s @file{DST} argument is optional now. Last
1006 @file{SRC} path's element will be used by default.
1010 @section Release 0.9
1013 Fix @option{-rx}/@option{-tx} arguments processing in
1014 @command{nncp-call} command. They were ignored.
1018 @section Release 0.8
1021 Little bugfix in @command{nncp-file} command, where @option{-minsize}
1022 option for unchunked transfer was not in KiBs, but in bytes.
1026 @section Release 0.7
1030 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
1031 encrypted temporary file for that.
1034 Chunked files transmission appeared with corresponding
1035 @command{nncp-reass} command and @option{freqchunked} configuration file
1036 entry. Useful for transferring big files over small storage devices.
1039 @option{freqminsize} configuration file option, analogue to
1040 @option{-minsize} one.
1043 @command{nncp-xfer}'s @option{-force} option is renamed to
1044 @option{-mkdir} for clarity.
1047 @option{-minsize} option is specified in KiBs, not bytes, for
1051 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
1052 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
1053 common prefix and are grouped together for convenience.
1056 @command{nncp-cfgenc} command appeared, allowing configuration file
1057 encryption/decryption, for keeping it safe without any either OpenPGP or
1058 similar tools usage.
1061 Cryptographic libraries (dependencies) are updated.
1066 @section Release 0.6
1068 @item Small @command{nncp-rm} command appeared.
1069 @item Cryptographic libraries (dependencies) are updated.
1073 @section Release 0.5
1076 Trivial small fix in default niceness level of @command{nncp-file}
1077 and @command{nncp-freq} commands.
1081 @section Release 0.4
1085 Small fix in @command{nncp-call}, @command{nncp-caller},
1086 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
1090 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
1091 and more convenient to use.
1094 @command{nncp-mincfg} command appeared: helper allowing to create
1095 minimalistic stripped down configuration file without private keys, that
1096 is useful during @command{nncp-xfer} usage.
1101 @section Release 0.3
1103 @item Fixed compatibility with Go 1.6.
1107 @section Release 0.2
1111 @strong{Incompatible} packet's format change (magic number is changed
1112 too): size field is encrypted and is not send in plaintext anymore.
1115 @option{-minsize} option gives ability to automatically pad outgoing
1116 packets to specified minimal size.
1119 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
1120 always check new @emph{tx} packets appearance in the background while
1121 connected. Remote side is immediately notified.
1124 @option{-onlinedeadline} option gives ability to configure timeout of
1125 inactivity of online connection, when it could be disconnected. It could
1126 be used to keep connection alive for a long time.
1129 @option{-maxonlinetime} option gives ability to set maximal allowable
1130 online connection aliveness time.
1133 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
1136 @command{nncp-pkt} command can decompress the data.