4 See also this page @ref{Новости, on russian}.
11 Fixed building issues on 32-bit systems.
16 @section Release 8.2.0
20 Yggdrasil uses pure-Go IPv6+TCP network stack, instead of naked μTP
21 transport protocol, making it able to work as an ordinary TCP server
22 inside overlay network.
25 Yggdrasil's @code{prv;bind1,bind2;pub...}-like configuration strings are
26 replaced with URL-like ones (@code{yggdrasils://PRV?bind=BIND1&bind=BIND2&pub=PUB}).
29 Ability to pass multicast-related parameters to Yggdrasil configuration.
32 @command{nncp-daemon} is able to listen on both TCP and Yggdrasil-driven
33 sockets simultaneously.
36 @command{nncp-daemon}'s listening on peering endpoint socket is optional
37 -- you can be reached through the peers.
42 @section Release 8.1.0
46 @command{nncp-cfgdir} does not require @code{self} section existence in
50 Ability to act as Yggdrasil network client, using online protocol on top of it.
55 @section Release 8.0.2
59 Fixed sending ability to areas.
64 @section Release 8.0.1
68 Fixed incorrect @code{freq.chunked} value calculation. If it was missed,
69 then chunked transfer mode was forcefully turned on anyway.
72 Fixed incorrect full file's size calculation in @file{.nncp.meta}.
77 @section Release 8.0.0
81 @strong{Incompatible} encrypted packet format change: payload and pad
82 sizes are sent in-bound in the encrypted stream. That gives ability to
83 streamingly create encrypted packets, without knowing sizes in advance,
84 without creating temporary file or buffer data in memory.
87 Proper encrypted packet padding verification is done now. This is not
88 critical issue, but previously neither padding value, nor its size were
89 authenticated, giving ability to iteratively strip trailing bytes and
90 determine payload's size by observing the reaction of the encrypted
94 @command{nncp-exec} loses its @option{-use-tmp} option, because of
95 streaming-compatible encrypted packets format.
98 @command{nncp-file} and @command{nncp-exec} commands have
99 @option{-maxsize} option, limiting maximal resulting encrypted packet's
100 maximal size (returning error if it is exceeded). Could be useful,
101 because no payload size could be known in advance.
106 @section Release 7.7.0
110 Experimental @code{kqueue} and @code{inotify} based notifications
111 support about spool directory changes, for reducing their often reading
115 @file{.seen} and @file{.hdr} files moved to @file{seen/} and @file{hdr/}
116 subdirectories, for faster scanning of spool directories.
117 Current files migration required:
120 $ find $NNCPSPOOL -type f -name "*.hdr" -exec rm @{@} +
122 $ find $NNCPSPOOL -type d -name rx | while read rx ; do
125 find . -type f -name "*.seen" | while read fn ; do
126 mv $fn seen/$@{fn%.seen@}
130 $ find $NNCPSPOOL -type d -name area | while read area ; do
131 find $area -type f -name "*.seen" | while read fn ; do
140 @section Release 7.6.0
144 Logging may be done to specified opened file descriptor
145 (@env{$NNCPLOG=FD:5} for example).
146 That is friendly to use under @command{daemontools}.
149 Added additional checks of public keys existence in configuration file,
150 preventing some commands from failing.
155 @section Release 7.5.1
159 NNCP builds on NetBSD.
164 @section Release 7.5.0
168 @command{nncp-daemon} is compatible with UCSPI-TCP interface, so log
169 will contain remote side's address (when running under appropriate
170 utility). @option{-ucspi} option should be used instead of @option{-inetd}.
173 @command{nncp-call} can be UCSPI-TCP client, using @option{-ucspi} option.
176 Do not exit if some of MCD network interfaces can not be listened --
177 only warn about that.
182 @section Release 7.4.0
186 Fixed simultaneous @command{nncp-daemon} and @command{nncp-caller} MCD work.
191 @section Release 7.3.2
195 @command{hjson-cli} utility builds in vendor-mode now.
200 @section Release 7.3.1
204 Fixed possibly left opened file descriptor in online commands.
207 Severely decreased memory usage of MTH hashing.
212 @section Release 7.3.0
216 Fixed some workability problems on 32-bit systems with big files.
219 Ability to use directory with a bunch of files as a configuration.
220 @command{nncp-cfgdir} command appeared.
225 @section Release 7.2.1
229 Small optimizations in online commands.
234 @section Release 7.2.0
238 @command{nncp-trns} command appeared for manual transition packets creation.
241 If destination node of transitional packet has non empty @option{via}
242 route, then do not ignore, but use it.
245 Do not relay multicast packet to area message's originator, that
246 obviously has seen its own packet.
249 Much less memory usage during MTH hashing when offset is zero: when
250 packet is not resumed, but for example checked with @command{nncp-check}
256 @section Release 7.1.1
260 Fixed failing directories fsync after @file{.seen} file creation.
265 @section Release 7.1.0
269 Multicasting areas feature appeared. Implemented merely by an additional
270 plain packet type with @command{nncp-toss}, @command{nncp-file} and
271 @command{nncp-exec} commands modification.
274 Fixed workability of @command{nncp-file} and @command{nncp-exec}
275 commands, that use temporary file (stdin and @option{-use-tmp}).
278 Fixed disappearing bad return code in @command{nncp-exec} command.
281 Fixed invalid @file{.hdr} generation when transitional packets are used.
284 @option{-all} option appeared in @command{nncp-rm} command, applying to
285 all the nodes at once.
288 @option{-cycle} option appeared in @command{nncp-check} command, looping
289 the check in infinite cycle.
292 @command{nncp-rm} command can take node alias name.
295 @command{nncp-pkt} can parse @file{.hdr} files.
300 @section Release 7.0.0
304 Minimal required Go version 1.13.
307 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
308 Because of that, there are backward @strong{incompatible} changes of
309 encrypted files (everything laying in the spool directory) and
310 @file{.meta} files of chunked transfer.
312 Current implementation is far from being optimal: it lacks
313 parallelizable calculations and has higher memory consumption: nearly
314 512 KiB for each 1 GiB of file's data. Future performance and memory
315 size optimizations should not lead to packet's format change. But it is
316 still several times faster than BLAKE2b.
319 Resumed online downloads, because of MTH, require reading only of the
320 preceding part of file, not the whole one as was before.
323 @command{nncp-hash} utility appeared for calculating file's MTH hash.
326 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
327 packets. Lowering number of used primitives. Also, its encrypted
328 packet's header is used as an associated data during encryption.
331 MultiCast Discovery uses
332 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
335 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
338 @command{nncp-stat} reports about partly downloaded packets.
341 Updated dependencies.
346 @section Release 6.6.0
350 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
351 commands wait for all background checksummers completion after
352 connection is finished.
355 Added possibility of address determining through multicast announcement
356 in local area network, so called MCD (MultiCast Discovery).
361 @section Release 6.5.0
365 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
368 Fixed possible bad return code ignoring in automatic tosser.
371 Fixed race during file descriptors closing when online protocol call is
372 finished, that could lead to write error of received packet fragment.
375 Kill all packet transmission progress bars in @command{nncp-daemon},
376 @command{nncp-call} and @command{nncp-caller} when call is finished.
381 @section Release 6.4.0
385 Fixed possible race in online protocol, that lead to panic.
390 @section Release 6.3.0
394 Fixed possible panic while showing progress during online protocol.
399 @section Release 6.2.1
403 Three places in logs contained excess @code{%s}.
408 @section Release 6.2.0
412 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
415 Yet another logging refactoring and simplification.
416 Should be no visible differences to the end user.
421 @section Release 6.1.0
425 Optimization: most commands do not keep opened file descriptors now.
426 Previously you can exceed maximal number of opened files if you have got
427 many packets in the spool directory.
430 Optimization: do not close file descriptor of the file we download
431 online. Previously each chunk lead to expensive open/close calls.
434 Online downloaded files are saved with @file{.nock} (non-checksummed)
435 suffix, waiting either for @command{nncp-check}, or online daemons to
436 perform integrity check.
439 Optimization: files, that are not resumed, are checksummed immediately
440 during the online download, skipping @file{.nock}-intermediate step.
443 Ability to store encrypted packet's header in @file{.hdr} file, close to
444 the packet itself. That can greatly increase performance of packets
445 listing on filesystems with big block's size.
450 @section Release 6.0.0
454 Log uses human readable and easy machine parseable
455 @url{https://www.gnu.org/software/recutils/, recfile} format for the
456 records, instead of structured RFC 3339 lines. Old logs are not readable
457 by @command{nncp-log} anymore.
460 @option{-autotoss*} option workability with @command{nncp-daemon}'s
461 @option{-inetd} mode.
464 Call's @option{when-tx-exists} allows to make a call only when outbound
465 packets exists. Combined with seconds-aware cron expression that can be
466 used as some kind of auto dialler.
469 @command{nncp-cronexpr} command allows you to check validity and
470 expectations of specified cron expression.
475 @section Release 5.6.0
479 @option{-autotoss*} option runs tosser not after the call, but every
480 second while it is active.
483 @option{autotoss}, @option{autotoss-doseen},
484 @option{autotoss-nofile}, @option{autotoss-nofreq},
485 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
486 @option{calls} configuration section. You can configure per-call
487 automatic tosser options.
490 Use vendoring, instead of @env{$GOPATH} overriding during tarball
491 installation, because current minimal Go's version is 1.12 and it
497 @section Release 5.5.1
501 Respect for @env{$BINDIR}, @env{$INFODIR} and @env{$DOCDIR} environment
502 variables in @file{config} during installation.
507 @section Release 5.5.0
511 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
512 @command{nncp-bundle} and @command{nncp-stat}.
515 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
518 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
519 options now. Uncompressed packets are not compatible with previous NNCP
523 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
524 have @option{-autotoss*} options for running tosser after call is ended.
527 Updated dependencies. Minimal required Go version is 1.12.
532 @section Release 5.4.1
536 Fixed @code{SENDMAIL} variable usage during the build.
541 @section Release 5.4.0
545 Updated dependencies.
548 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
549 This should not influence package maintainers, because minimal @command{redo}
550 implementation is included in tarball.
555 @section Release 5.3.3
559 More various error checks.
562 Updated dependencies.
567 @section Release 5.3.2
571 Fixed incorrect logic of @option{onlinedeadline} timeout, where
572 connection won't take into account incoming packets events and will
573 forcefully disconnect.
578 @section Release 5.3.1
582 Fixed @option{onlinedeadline} workability with call addresses that use
583 external commands (@verb{#"|somecmd"#}).
586 @command{nncp-stat} has @option{-pkt} option displaying information
587 about each packet in the spool.
592 @section Release 5.3.0
596 Progress messages contain prefix, describing the running action.
599 Fixed not occurring handshake messages padding.
602 Finish all SP protocol related goroutines, less memory leak.
605 SP protocol generates less socket write calls, thus generating less TCP
609 Check @option{onlinedeadline} and @option{maxonlinetime} options every
610 second, independently from socket reads (up to 10 seconds).
613 Once per minute, if no other traffic exists, PING packets are sent in
614 SP-connection. That allows faster determining of connection unworkability.
617 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
622 @section Release 5.2.1
626 Fixed SP protocol error handling, sometimes causing program panic.
631 @section Release 5.2.0
635 Most commands by default show oneline operations progress.
636 @option{-progress}, @option{-noprogress} command line options,
637 @option{noprogress} configuration file option appeared.
640 Fixed incorrect @command{nncp-check} command return code, that returned
641 bad code when everything is good.
644 Free disk space check during @command{nncp-bundle -rx} call.
649 @section Release 5.1.2
653 @strong{Critical} vulnerability: remote peers authentication could lead
654 to incorrect identification of remote side, allowing foreign encrypted
658 Bugfix: private and public Noise keys were swapped in newly created
659 configuration files, that lead to inability to authenticate online peers.
662 Explicit directories fsync-ing for guaranteed files renaming.
667 @section Release 5.1.1
671 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
676 @section Release 5.1.0
680 @command{nncp-file} can send directories, automatically creating pax
684 Free disk space is checked during outbound packets creation.
687 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
688 file options replaced with the structure:
689 @option{freq: @{path: @dots{}, minsize: @dots{}, chunked: @dots{}@}}.
692 Added @option{freq.maxsize} configuration file option, forbidding of
693 freq sending larger than specified size.
696 Ability to notify about successfully executed commands (exec) with
697 @option{notify.exec} configuration file option.
702 @section Release 5.0.0
706 @strong{Incompatible} configuration file format change: YAML is
707 replaced with Hjson, due to its simplicity, without noticeable lack
708 of either functionality or convenience.
711 @strong{Incompatible} plain packet format changes. Older versions are
712 not supported. @code{zlib} compression is replaced with
713 @code{Zstandard}, due to its speed and efficiency, despite library
714 version is not mature enough.
717 Ability to call remote nodes via pipe call of external command, not only
721 @command{nncp-cfgnew} generates configuration file with many
722 comments. @option{-nocomments} option can be used for an old
726 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
727 avoid possible collisions with @file{.nncp.chunkCTR}.
730 Ability to override process umask through configuration file option.
733 Files and directories are created with 666/777 permissions by default,
734 allowing control with @command{umask}.
737 Updated dependencies.
740 Full usage of go modules for dependencies management
741 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
744 Forbid any later GNU GPL version autousage
745 (project's licence now is GNU GPLv3-only).
752 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
760 @strong{Incompatible} encrypted and eblob packet format change: AEAD
761 encryption mode with 128 KiB blocks is used now, because previously
762 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
763 decrypted data to external command. Older versions are not supported.
766 Available free space checking before copying in @command{nncp-xfer},
767 @command{nncp-daemon}, @command{nncp-call(er)}.
770 @command{nncp-call} has ability only to list packets on remote node,
771 without their transmission.
774 @command{nncp-call} has ability to transfer only specified packets.
777 Workability of @option{xxrate} preference in @option{calls}
778 configuration file section.
781 Dependant libraries are updated.
787 Begin using of @code{go.mod} subsystem.
794 @item @command{nncp-daemon} can be run as @command{inetd}-service.
802 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
803 if @file{.seen} exists and treat it like file was already downloaded.
804 Possibly it was transferred out-of-bound and remote side needs to be
808 If higher priority packet is spooled, then @command{nncp-daemon} will
809 queue its sending first, interrupting lower priority transmissions.
812 Simple packet rate limiter added to online-related tools
813 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
816 Ability to specify niceness with symbolic notation:
817 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
820 Changed default niceness levels:
821 for @command{nncp-exec} from 64 to 96,
822 for @command{nncp-freq} from 64 to 160,
823 for @command{nncp-file} from 196 to 224.
831 @strong{Incompatible} @emph{bundle} archive format changes and
832 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
833 valid tar archives, but Go 1.9 made them invalid because of long paths
834 inside. NNCP accidentally was dependant on that bug. Explicit adding of
835 @file{NNCP/} directory in archive restores workability with valid tar
843 Ability to disable relaying at all using @verb{|-via -|} command line option.
851 @strong{Incompatible} plain packet format changes. Older versions are
855 Ability to queue remote command execution, by configuring @option{exec}
856 option in configuration file and using @command{nncp-exec} command:
859 @command{nncp-mail} command is replaced with more flexible
860 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
861 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
863 @option{sendmail} configuration file option is replaced with
864 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
865 @verb{|exec: sendmail: [...]|}.
869 Ability to override @option{via} configuration option for destination
870 node via @option{-via} command line option for following commands:
871 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
874 Chunked files, having size less than specified chunk size, will be sent
875 as an ordinary single file.
878 Exec commands are invoked with additional @env{$NNCP_NICE} and
879 @env{$NNCP_SELF} environment variables.
882 Files, that are sent as a reply to freq, have niceness level taken from
883 the freq packet. You can set desired niceness during @command{nncp-freq}
884 invocation using @option{-replynice} option.
887 @command{nncp-toss} command can ignore specified packet types during
888 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
892 @command{nncp-file} command uses
893 @option{FreqMinSize}/@option{FreqChunked} configuration file options
894 for @option{-minsize}/@option{-chunked} by default. You can turn this
895 off by specifying zero value.
904 @strong{Incompatible} encrypted/eblob packet format changes. Older
905 versions are not supported.
908 Twofish encryption algorithm is replaced with ChaCha20. It is much more
909 faster. One cryptographic primitive less.
912 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
913 another cryptographic primitive less (assuming that BLAKE2X is nearly
914 identical to BLAKE2).
923 @strong{Incompatible} encrypted packet format changes. Older versions
927 @command{nncp-bundle} command can either create stream of encrypted
928 packets, or digest it. It is useful when dealing with
929 @code{stdin}/@code{stdout} based transmission methods (like writing to
930 CD-ROM without intermediate prepared ISO image and working with tape
934 @command{nncp-toss} is able to create @file{.seen} files preventing
935 duplicate packets receiving.
938 Single background checksum verifier worker is allowed in
939 @command{nncp-call}. This is helpful when thousands of small inbound
940 packets could create many goroutines.
943 Ability to override path to spool directory and logfile through either
944 command line argument, or environment variable.
947 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
948 @file{.part}, @file{.lock} and temporary files.
953 @section Release 0.12
955 @item Sendmail command is called with @env{$NNCP_SENDER} environment variable.
959 @section Release 0.11
961 @item @command{nncp-stat}'s command output is sorted by node name.
965 @section Release 0.10
968 @command{nncp-freq}'s @file{DST} argument is optional now. Last
969 @file{SRC} path's element will be used by default.
976 Fix @option{-rx}/@option{-tx} arguments processing in
977 @command{nncp-call} command. They were ignored.
984 Little bugfix in @command{nncp-file} command, where @option{-minsize}
985 option for unchunked transfer was not in KiBs, but in bytes.
993 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
994 encrypted temporary file for that.
997 Chunked files transmission appeared with corresponding
998 @command{nncp-reass} command and @option{freqchunked} configuration file
999 entry. Useful for transferring big files over small storage devices.
1002 @option{freqminsize} configuration file option, analogue to
1003 @option{-minsize} one.
1006 @command{nncp-xfer}'s @option{-force} option is renamed to
1007 @option{-mkdir} for clarity.
1010 @option{-minsize} option is specified in KiBs, not bytes, for
1014 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
1015 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
1016 common prefix and are grouped together for convenience.
1019 @command{nncp-cfgenc} command appeared, allowing configuration file
1020 encryption/decryption, for keeping it safe without any either OpenPGP or
1021 similar tools usage.
1024 Cryptographic libraries (dependencies) are updated.
1029 @section Release 0.6
1031 @item Small @command{nncp-rm} command appeared.
1032 @item Cryptographic libraries (dependencies) are updated.
1036 @section Release 0.5
1039 Trivial small fix in default niceness level of @command{nncp-file}
1040 and @command{nncp-freq} commands.
1044 @section Release 0.4
1048 Small fix in @command{nncp-call}, @command{nncp-caller},
1049 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
1053 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
1054 and more convenient to use.
1057 @command{nncp-mincfg} command appeared: helper allowing to create
1058 minimalistic stripped down configuration file without private keys, that
1059 is useful during @command{nncp-xfer} usage.
1064 @section Release 0.3
1066 @item Fixed compatibility with Go 1.6.
1070 @section Release 0.2
1074 @strong{Incompatible} packet's format change (magic number is changed
1075 too): size field is encrypted and is not send in plaintext anymore.
1078 @option{-minsize} option gives ability to automatically pad outgoing
1079 packets to specified minimal size.
1082 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
1083 always check new @emph{tx} packets appearance in the background while
1084 connected. Remote side is immediately notified.
1087 @option{-onlinedeadline} option gives ability to configure timeout of
1088 inactivity of online connection, when it could be disconnected. It could
1089 be used to keep connection alive for a long time.
1092 @option{-maxonlinetime} option gives ability to set maximal allowable
1093 online connection aliveness time.
1096 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
1099 @command{nncp-pkt} command can decompress the data.