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
23 NNCP builds on OpenBSD.
28 @section Release 8.4.0
32 Multicast related interface names (@code{mcd-listen} and @code{mcd-send}
33 configuration options) are now regular expressions. By default
34 @command{nncp-cfgnew} uncomments them now with @code{.*} interface name.
37 @command{nncp-call} command has @option{-mcd-wait} option to wait for
38 multicast packet about node's address.
41 @command{nncp-file} command skips everything that is neither regular
42 file nor directory during pax-archive creation.
47 @section Release 8.3.0
51 Fixed building issues on 32-bit systems.
56 @section Release 8.2.0
60 Yggdrasil uses pure-Go IPv6+TCP network stack, instead of naked μTP
61 transport protocol, making it able to work as an ordinary TCP server
62 inside overlay network.
65 Yggdrasil's @code{prv;bind1,bind2;pub...}-like configuration strings are
66 replaced with URL-like ones (@code{yggdrasils://PRV?bind=BIND1&bind=BIND2&pub=PUB}).
69 Ability to pass multicast-related parameters to Yggdrasil configuration.
72 @command{nncp-daemon} is able to listen on both TCP and Yggdrasil-driven
73 sockets simultaneously.
76 @command{nncp-daemon}'s listening on peering endpoint socket is optional
77 -- you can be reached through the peers.
82 @section Release 8.1.0
86 @command{nncp-cfgdir} does not require @code{self} section existence in
90 Ability to act as Yggdrasil network client, using online protocol on top of it.
95 @section Release 8.0.2
99 Fixed sending ability to areas.
104 @section Release 8.0.1
108 Fixed incorrect @code{freq.chunked} value calculation. If it was missed,
109 then chunked transfer mode was forcefully turned on anyway.
112 Fixed incorrect full file's size calculation in @file{.nncp.meta}.
117 @section Release 8.0.0
121 @strong{Incompatible} encrypted packet format change: payload and pad
122 sizes are sent in-bound in the encrypted stream. That gives ability to
123 streamingly create encrypted packets, without knowing sizes in advance,
124 without creating temporary file or buffer data in memory.
127 Proper encrypted packet padding verification is done now. This is not
128 critical issue, but previously neither padding value, nor its size were
129 authenticated, giving ability to iteratively strip trailing bytes and
130 determine payload's size by observing the reaction of the encrypted
134 @command{nncp-exec} loses its @option{-use-tmp} option, because of
135 streaming-compatible encrypted packets format.
138 @command{nncp-file} and @command{nncp-exec} commands have
139 @option{-maxsize} option, limiting maximal resulting encrypted packet's
140 maximal size (returning error if it is exceeded). Could be useful,
141 because no payload size could be known in advance.
146 @section Release 7.7.0
150 Experimental @code{kqueue} and @code{inotify} based notifications
151 support about spool directory changes, for reducing their often reading
155 @file{.seen} and @file{.hdr} files moved to @file{seen/} and @file{hdr/}
156 subdirectories, for faster scanning of spool directories.
157 Current files migration required:
160 $ find $NNCPSPOOL -type f -name "*.hdr" -exec rm @{@} +
162 $ find $NNCPSPOOL -type d -name rx | while read rx ; do
165 find . -type f -name "*.seen" | while read fn ; do
166 mv $fn seen/$@{fn%.seen@}
170 $ find $NNCPSPOOL -type d -name area | while read area ; do
171 find $area -type f -name "*.seen" | while read fn ; do
180 @section Release 7.6.0
184 Logging may be done to specified opened file descriptor
185 (@env{$NNCPLOG=FD:5} for example).
186 That is friendly to use under @command{daemontools}.
189 Added additional checks of public keys existence in configuration file,
190 preventing some commands from failing.
195 @section Release 7.5.1
199 NNCP builds on NetBSD.
204 @section Release 7.5.0
208 @command{nncp-daemon} is compatible with UCSPI-TCP interface, so log
209 will contain remote side's address (when running under appropriate
210 utility). @option{-ucspi} option should be used instead of @option{-inetd}.
213 @command{nncp-call} can be UCSPI-TCP client, using @option{-ucspi} option.
216 Do not exit if some of MCD network interfaces can not be listened --
217 only warn about that.
222 @section Release 7.4.0
226 Fixed simultaneous @command{nncp-daemon} and @command{nncp-caller} MCD work.
231 @section Release 7.3.2
235 @command{hjson-cli} utility builds in vendor-mode now.
240 @section Release 7.3.1
244 Fixed possibly left opened file descriptor in online commands.
247 Severely decreased memory usage of MTH hashing.
252 @section Release 7.3.0
256 Fixed some workability problems on 32-bit systems with big files.
259 Ability to use directory with a bunch of files as a configuration.
260 @command{nncp-cfgdir} command appeared.
265 @section Release 7.2.1
269 Small optimizations in online commands.
274 @section Release 7.2.0
278 @command{nncp-trns} command appeared for manual transition packets creation.
281 If destination node of transitional packet has non empty @option{via}
282 route, then do not ignore, but use it.
285 Do not relay multicast packet to area message's originator, that
286 obviously has seen its own packet.
289 Much less memory usage during MTH hashing when offset is zero: when
290 packet is not resumed, but for example checked with @command{nncp-check}
296 @section Release 7.1.1
300 Fixed failing directories fsync after @file{.seen} file creation.
305 @section Release 7.1.0
309 Multicasting areas feature appeared. Implemented merely by an additional
310 plain packet type with @command{nncp-toss}, @command{nncp-file} and
311 @command{nncp-exec} commands modification.
314 Fixed workability of @command{nncp-file} and @command{nncp-exec}
315 commands, that use temporary file (stdin and @option{-use-tmp}).
318 Fixed disappearing bad return code in @command{nncp-exec} command.
321 Fixed invalid @file{.hdr} generation when transitional packets are used.
324 @option{-all} option appeared in @command{nncp-rm} command, applying to
325 all the nodes at once.
328 @option{-cycle} option appeared in @command{nncp-check} command, looping
329 the check in infinite cycle.
332 @command{nncp-rm} command can take node alias name.
335 @command{nncp-pkt} can parse @file{.hdr} files.
340 @section Release 7.0.0
344 Minimal required Go version 1.13.
347 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
348 Because of that, there are backward @strong{incompatible} changes of
349 encrypted files (everything laying in the spool directory) and
350 @file{.meta} files of chunked transfer.
352 Current implementation is far from being optimal: it lacks
353 parallelizable calculations and has higher memory consumption: nearly
354 512 KiB for each 1 GiB of file's data. Future performance and memory
355 size optimizations should not lead to packet's format change. But it is
356 still several times faster than BLAKE2b.
359 Resumed online downloads, because of MTH, require reading only of the
360 preceding part of file, not the whole one as was before.
363 @command{nncp-hash} utility appeared for calculating file's MTH hash.
366 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
367 packets. Lowering number of used primitives. Also, its encrypted
368 packet's header is used as an associated data during encryption.
371 MultiCast Discovery uses
372 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
375 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
378 @command{nncp-stat} reports about partly downloaded packets.
381 Updated dependencies.
386 @section Release 6.6.0
390 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
391 commands wait for all background checksummers completion after
392 connection is finished.
395 Added possibility of address determining through multicast announcement
396 in local area network, so called MCD (MultiCast Discovery).
401 @section Release 6.5.0
405 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
408 Fixed possible bad return code ignoring in automatic tosser.
411 Fixed race during file descriptors closing when online protocol call is
412 finished, that could lead to write error of received packet fragment.
415 Kill all packet transmission progress bars in @command{nncp-daemon},
416 @command{nncp-call} and @command{nncp-caller} when call is finished.
421 @section Release 6.4.0
425 Fixed possible race in online protocol, that lead to panic.
430 @section Release 6.3.0
434 Fixed possible panic while showing progress during online protocol.
439 @section Release 6.2.1
443 Three places in logs contained excess @code{%s}.
448 @section Release 6.2.0
452 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
455 Yet another logging refactoring and simplification.
456 Should be no visible differences to the end user.
461 @section Release 6.1.0
465 Optimization: most commands do not keep opened file descriptors now.
466 Previously you can exceed maximal number of opened files if you have got
467 many packets in the spool directory.
470 Optimization: do not close file descriptor of the file we download
471 online. Previously each chunk lead to expensive open/close calls.
474 Online downloaded files are saved with @file{.nock} (non-checksummed)
475 suffix, waiting either for @command{nncp-check}, or online daemons to
476 perform integrity check.
479 Optimization: files, that are not resumed, are checksummed immediately
480 during the online download, skipping @file{.nock}-intermediate step.
483 Ability to store encrypted packet's header in @file{.hdr} file, close to
484 the packet itself. That can greatly increase performance of packets
485 listing on filesystems with big block's size.
490 @section Release 6.0.0
494 Log uses human readable and easy machine parseable
495 @url{https://www.gnu.org/software/recutils/, recfile} format for the
496 records, instead of structured RFC 3339 lines. Old logs are not readable
497 by @command{nncp-log} anymore.
500 @option{-autotoss*} option workability with @command{nncp-daemon}'s
501 @option{-inetd} mode.
504 Call's @option{when-tx-exists} allows to make a call only when outbound
505 packets exists. Combined with seconds-aware cron expression that can be
506 used as some kind of auto dialler.
509 @command{nncp-cronexpr} command allows you to check validity and
510 expectations of specified cron expression.
515 @section Release 5.6.0
519 @option{-autotoss*} option runs tosser not after the call, but every
520 second while it is active.
523 @option{autotoss}, @option{autotoss-doseen},
524 @option{autotoss-nofile}, @option{autotoss-nofreq},
525 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
526 @option{calls} configuration section. You can configure per-call
527 automatic tosser options.
530 Use vendoring, instead of @env{$GOPATH} overriding during tarball
531 installation, because current minimal Go's version is 1.12 and it
537 @section Release 5.5.1
541 Respect for @env{$BINDIR}, @env{$INFODIR} and @env{$DOCDIR} environment
542 variables in @file{config} during installation.
547 @section Release 5.5.0
551 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
552 @command{nncp-bundle} and @command{nncp-stat}.
555 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
558 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
559 options now. Uncompressed packets are not compatible with previous NNCP
563 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
564 have @option{-autotoss*} options for running tosser after call is ended.
567 Updated dependencies. Minimal required Go version is 1.12.
572 @section Release 5.4.1
576 Fixed @code{SENDMAIL} variable usage during the build.
581 @section Release 5.4.0
585 Updated dependencies.
588 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
589 This should not influence package maintainers, because minimal @command{redo}
590 implementation is included in tarball.
595 @section Release 5.3.3
599 More various error checks.
602 Updated dependencies.
607 @section Release 5.3.2
611 Fixed incorrect logic of @option{onlinedeadline} timeout, where
612 connection won't take into account incoming packets events and will
613 forcefully disconnect.
618 @section Release 5.3.1
622 Fixed @option{onlinedeadline} workability with call addresses that use
623 external commands (@verb{#"|somecmd"#}).
626 @command{nncp-stat} has @option{-pkt} option displaying information
627 about each packet in the spool.
632 @section Release 5.3.0
636 Progress messages contain prefix, describing the running action.
639 Fixed not occurring handshake messages padding.
642 Finish all SP protocol related goroutines, less memory leak.
645 SP protocol generates less socket write calls, thus generating less TCP
649 Check @option{onlinedeadline} and @option{maxonlinetime} options every
650 second, independently from socket reads (up to 10 seconds).
653 Once per minute, if no other traffic exists, PING packets are sent in
654 SP-connection. That allows faster determining of connection unworkability.
657 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
662 @section Release 5.2.1
666 Fixed SP protocol error handling, sometimes causing program panic.
671 @section Release 5.2.0
675 Most commands by default show oneline operations progress.
676 @option{-progress}, @option{-noprogress} command line options,
677 @option{noprogress} configuration file option appeared.
680 Fixed incorrect @command{nncp-check} command return code, that returned
681 bad code when everything is good.
684 Free disk space check during @command{nncp-bundle -rx} call.
689 @section Release 5.1.2
693 @strong{Critical} vulnerability: remote peers authentication could lead
694 to incorrect identification of remote side, allowing foreign encrypted
698 Bugfix: private and public Noise keys were swapped in newly created
699 configuration files, that lead to inability to authenticate online peers.
702 Explicit directories fsync-ing for guaranteed files renaming.
707 @section Release 5.1.1
711 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
716 @section Release 5.1.0
720 @command{nncp-file} can send directories, automatically creating pax
724 Free disk space is checked during outbound packets creation.
727 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
728 file options replaced with the structure:
729 @option{freq: @{path: @dots{}, minsize: @dots{}, chunked: @dots{}@}}.
732 Added @option{freq.maxsize} configuration file option, forbidding of
733 freq sending larger than specified size.
736 Ability to notify about successfully executed commands (exec) with
737 @option{notify.exec} configuration file option.
742 @section Release 5.0.0
746 @strong{Incompatible} configuration file format change: YAML is
747 replaced with Hjson, due to its simplicity, without noticeable lack
748 of either functionality or convenience.
751 @strong{Incompatible} plain packet format changes. Older versions are
752 not supported. @code{zlib} compression is replaced with
753 @code{Zstandard}, due to its speed and efficiency, despite library
754 version is not mature enough.
757 Ability to call remote nodes via pipe call of external command, not only
761 @command{nncp-cfgnew} generates configuration file with many
762 comments. @option{-nocomments} option can be used for an old
766 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
767 avoid possible collisions with @file{.nncp.chunkCTR}.
770 Ability to override process umask through configuration file option.
773 Files and directories are created with 666/777 permissions by default,
774 allowing control with @command{umask}.
777 Updated dependencies.
780 Full usage of go modules for dependencies management
781 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
784 Forbid any later GNU GPL version autousage
785 (project's licence now is GNU GPLv3-only).
792 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
800 @strong{Incompatible} encrypted and eblob packet format change: AEAD
801 encryption mode with 128 KiB blocks is used now, because previously
802 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
803 decrypted data to external command. Older versions are not supported.
806 Available free space checking before copying in @command{nncp-xfer},
807 @command{nncp-daemon}, @command{nncp-call(er)}.
810 @command{nncp-call} has ability only to list packets on remote node,
811 without their transmission.
814 @command{nncp-call} has ability to transfer only specified packets.
817 Workability of @option{xxrate} preference in @option{calls}
818 configuration file section.
821 Dependant libraries are updated.
827 Begin using of @code{go.mod} subsystem.
834 @item @command{nncp-daemon} can be run as @command{inetd}-service.
842 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
843 if @file{.seen} exists and treat it like file was already downloaded.
844 Possibly it was transferred out-of-bound and remote side needs to be
848 If higher priority packet is spooled, then @command{nncp-daemon} will
849 queue its sending first, interrupting lower priority transmissions.
852 Simple packet rate limiter added to online-related tools
853 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
856 Ability to specify niceness with symbolic notation:
857 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
860 Changed default niceness levels:
861 for @command{nncp-exec} from 64 to 96,
862 for @command{nncp-freq} from 64 to 160,
863 for @command{nncp-file} from 196 to 224.
871 @strong{Incompatible} @emph{bundle} archive format changes and
872 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
873 valid tar archives, but Go 1.9 made them invalid because of long paths
874 inside. NNCP accidentally was dependant on that bug. Explicit adding of
875 @file{NNCP/} directory in archive restores workability with valid tar
883 Ability to disable relaying at all using @verb{|-via -|} command line option.
891 @strong{Incompatible} plain packet format changes. Older versions are
895 Ability to queue remote command execution, by configuring @option{exec}
896 option in configuration file and using @command{nncp-exec} command:
899 @command{nncp-mail} command is replaced with more flexible
900 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
901 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
903 @option{sendmail} configuration file option is replaced with
904 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
905 @verb{|exec: sendmail: [...]|}.
909 Ability to override @option{via} configuration option for destination
910 node via @option{-via} command line option for following commands:
911 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
914 Chunked files, having size less than specified chunk size, will be sent
915 as an ordinary single file.
918 Exec commands are invoked with additional @env{$NNCP_NICE} and
919 @env{$NNCP_SELF} environment variables.
922 Files, that are sent as a reply to freq, have niceness level taken from
923 the freq packet. You can set desired niceness during @command{nncp-freq}
924 invocation using @option{-replynice} option.
927 @command{nncp-toss} command can ignore specified packet types during
928 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
932 @command{nncp-file} command uses
933 @option{FreqMinSize}/@option{FreqChunked} configuration file options
934 for @option{-minsize}/@option{-chunked} by default. You can turn this
935 off by specifying zero value.
944 @strong{Incompatible} encrypted/eblob packet format changes. Older
945 versions are not supported.
948 Twofish encryption algorithm is replaced with ChaCha20. It is much more
949 faster. One cryptographic primitive less.
952 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
953 another cryptographic primitive less (assuming that BLAKE2X is nearly
954 identical to BLAKE2).
963 @strong{Incompatible} encrypted packet format changes. Older versions
967 @command{nncp-bundle} command can either create stream of encrypted
968 packets, or digest it. It is useful when dealing with
969 @code{stdin}/@code{stdout} based transmission methods (like writing to
970 CD-ROM without intermediate prepared ISO image and working with tape
974 @command{nncp-toss} is able to create @file{.seen} files preventing
975 duplicate packets receiving.
978 Single background checksum verifier worker is allowed in
979 @command{nncp-call}. This is helpful when thousands of small inbound
980 packets could create many goroutines.
983 Ability to override path to spool directory and logfile through either
984 command line argument, or environment variable.
987 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
988 @file{.part}, @file{.lock} and temporary files.
993 @section Release 0.12
995 @item Sendmail command is called with @env{$NNCP_SENDER} environment variable.
999 @section Release 0.11
1001 @item @command{nncp-stat}'s command output is sorted by node name.
1005 @section Release 0.10
1008 @command{nncp-freq}'s @file{DST} argument is optional now. Last
1009 @file{SRC} path's element will be used by default.
1013 @section Release 0.9
1016 Fix @option{-rx}/@option{-tx} arguments processing in
1017 @command{nncp-call} command. They were ignored.
1021 @section Release 0.8
1024 Little bugfix in @command{nncp-file} command, where @option{-minsize}
1025 option for unchunked transfer was not in KiBs, but in bytes.
1029 @section Release 0.7
1033 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
1034 encrypted temporary file for that.
1037 Chunked files transmission appeared with corresponding
1038 @command{nncp-reass} command and @option{freqchunked} configuration file
1039 entry. Useful for transferring big files over small storage devices.
1042 @option{freqminsize} configuration file option, analogue to
1043 @option{-minsize} one.
1046 @command{nncp-xfer}'s @option{-force} option is renamed to
1047 @option{-mkdir} for clarity.
1050 @option{-minsize} option is specified in KiBs, not bytes, for
1054 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
1055 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
1056 common prefix and are grouped together for convenience.
1059 @command{nncp-cfgenc} command appeared, allowing configuration file
1060 encryption/decryption, for keeping it safe without any either OpenPGP or
1061 similar tools usage.
1064 Cryptographic libraries (dependencies) are updated.
1069 @section Release 0.6
1071 @item Small @command{nncp-rm} command appeared.
1072 @item Cryptographic libraries (dependencies) are updated.
1076 @section Release 0.5
1079 Trivial small fix in default niceness level of @command{nncp-file}
1080 and @command{nncp-freq} commands.
1084 @section Release 0.4
1088 Small fix in @command{nncp-call}, @command{nncp-caller},
1089 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
1093 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
1094 and more convenient to use.
1097 @command{nncp-mincfg} command appeared: helper allowing to create
1098 minimalistic stripped down configuration file without private keys, that
1099 is useful during @command{nncp-xfer} usage.
1104 @section Release 0.3
1106 @item Fixed compatibility with Go 1.6.
1110 @section Release 0.2
1114 @strong{Incompatible} packet's format change (magic number is changed
1115 too): size field is encrypted and is not send in plaintext anymore.
1118 @option{-minsize} option gives ability to automatically pad outgoing
1119 packets to specified minimal size.
1122 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
1123 always check new @emph{tx} packets appearance in the background while
1124 connected. Remote side is immediately notified.
1127 @option{-onlinedeadline} option gives ability to configure timeout of
1128 inactivity of online connection, when it could be disconnected. It could
1129 be used to keep connection alive for a long time.
1132 @option{-maxonlinetime} option gives ability to set maximal allowable
1133 online connection aliveness time.
1136 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
1139 @command{nncp-pkt} command can decompress the data.