4 See also this page @ref{Новости, on russian}.
11 Multicast related interface names (@code{mcd-listen} and @code{mcd-send}
12 configuration options) are now regular expressions. By default
13 @command{nncp-cfgnew} uncomments them now with @code{.*} interface name.
18 @section Release 8.3.0
22 Fixed building issues on 32-bit systems.
27 @section Release 8.2.0
31 Yggdrasil uses pure-Go IPv6+TCP network stack, instead of naked μTP
32 transport protocol, making it able to work as an ordinary TCP server
33 inside overlay network.
36 Yggdrasil's @code{prv;bind1,bind2;pub...}-like configuration strings are
37 replaced with URL-like ones (@code{yggdrasils://PRV?bind=BIND1&bind=BIND2&pub=PUB}).
40 Ability to pass multicast-related parameters to Yggdrasil configuration.
43 @command{nncp-daemon} is able to listen on both TCP and Yggdrasil-driven
44 sockets simultaneously.
47 @command{nncp-daemon}'s listening on peering endpoint socket is optional
48 -- you can be reached through the peers.
53 @section Release 8.1.0
57 @command{nncp-cfgdir} does not require @code{self} section existence in
61 Ability to act as Yggdrasil network client, using online protocol on top of it.
66 @section Release 8.0.2
70 Fixed sending ability to areas.
75 @section Release 8.0.1
79 Fixed incorrect @code{freq.chunked} value calculation. If it was missed,
80 then chunked transfer mode was forcefully turned on anyway.
83 Fixed incorrect full file's size calculation in @file{.nncp.meta}.
88 @section Release 8.0.0
92 @strong{Incompatible} encrypted packet format change: payload and pad
93 sizes are sent in-bound in the encrypted stream. That gives ability to
94 streamingly create encrypted packets, without knowing sizes in advance,
95 without creating temporary file or buffer data in memory.
98 Proper encrypted packet padding verification is done now. This is not
99 critical issue, but previously neither padding value, nor its size were
100 authenticated, giving ability to iteratively strip trailing bytes and
101 determine payload's size by observing the reaction of the encrypted
105 @command{nncp-exec} loses its @option{-use-tmp} option, because of
106 streaming-compatible encrypted packets format.
109 @command{nncp-file} and @command{nncp-exec} commands have
110 @option{-maxsize} option, limiting maximal resulting encrypted packet's
111 maximal size (returning error if it is exceeded). Could be useful,
112 because no payload size could be known in advance.
117 @section Release 7.7.0
121 Experimental @code{kqueue} and @code{inotify} based notifications
122 support about spool directory changes, for reducing their often reading
126 @file{.seen} and @file{.hdr} files moved to @file{seen/} and @file{hdr/}
127 subdirectories, for faster scanning of spool directories.
128 Current files migration required:
131 $ find $NNCPSPOOL -type f -name "*.hdr" -exec rm @{@} +
133 $ find $NNCPSPOOL -type d -name rx | while read rx ; do
136 find . -type f -name "*.seen" | while read fn ; do
137 mv $fn seen/$@{fn%.seen@}
141 $ find $NNCPSPOOL -type d -name area | while read area ; do
142 find $area -type f -name "*.seen" | while read fn ; do
151 @section Release 7.6.0
155 Logging may be done to specified opened file descriptor
156 (@env{$NNCPLOG=FD:5} for example).
157 That is friendly to use under @command{daemontools}.
160 Added additional checks of public keys existence in configuration file,
161 preventing some commands from failing.
166 @section Release 7.5.1
170 NNCP builds on NetBSD.
175 @section Release 7.5.0
179 @command{nncp-daemon} is compatible with UCSPI-TCP interface, so log
180 will contain remote side's address (when running under appropriate
181 utility). @option{-ucspi} option should be used instead of @option{-inetd}.
184 @command{nncp-call} can be UCSPI-TCP client, using @option{-ucspi} option.
187 Do not exit if some of MCD network interfaces can not be listened --
188 only warn about that.
193 @section Release 7.4.0
197 Fixed simultaneous @command{nncp-daemon} and @command{nncp-caller} MCD work.
202 @section Release 7.3.2
206 @command{hjson-cli} utility builds in vendor-mode now.
211 @section Release 7.3.1
215 Fixed possibly left opened file descriptor in online commands.
218 Severely decreased memory usage of MTH hashing.
223 @section Release 7.3.0
227 Fixed some workability problems on 32-bit systems with big files.
230 Ability to use directory with a bunch of files as a configuration.
231 @command{nncp-cfgdir} command appeared.
236 @section Release 7.2.1
240 Small optimizations in online commands.
245 @section Release 7.2.0
249 @command{nncp-trns} command appeared for manual transition packets creation.
252 If destination node of transitional packet has non empty @option{via}
253 route, then do not ignore, but use it.
256 Do not relay multicast packet to area message's originator, that
257 obviously has seen its own packet.
260 Much less memory usage during MTH hashing when offset is zero: when
261 packet is not resumed, but for example checked with @command{nncp-check}
267 @section Release 7.1.1
271 Fixed failing directories fsync after @file{.seen} file creation.
276 @section Release 7.1.0
280 Multicasting areas feature appeared. Implemented merely by an additional
281 plain packet type with @command{nncp-toss}, @command{nncp-file} and
282 @command{nncp-exec} commands modification.
285 Fixed workability of @command{nncp-file} and @command{nncp-exec}
286 commands, that use temporary file (stdin and @option{-use-tmp}).
289 Fixed disappearing bad return code in @command{nncp-exec} command.
292 Fixed invalid @file{.hdr} generation when transitional packets are used.
295 @option{-all} option appeared in @command{nncp-rm} command, applying to
296 all the nodes at once.
299 @option{-cycle} option appeared in @command{nncp-check} command, looping
300 the check in infinite cycle.
303 @command{nncp-rm} command can take node alias name.
306 @command{nncp-pkt} can parse @file{.hdr} files.
311 @section Release 7.0.0
315 Minimal required Go version 1.13.
318 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
319 Because of that, there are backward @strong{incompatible} changes of
320 encrypted files (everything laying in the spool directory) and
321 @file{.meta} files of chunked transfer.
323 Current implementation is far from being optimal: it lacks
324 parallelizable calculations and has higher memory consumption: nearly
325 512 KiB for each 1 GiB of file's data. Future performance and memory
326 size optimizations should not lead to packet's format change. But it is
327 still several times faster than BLAKE2b.
330 Resumed online downloads, because of MTH, require reading only of the
331 preceding part of file, not the whole one as was before.
334 @command{nncp-hash} utility appeared for calculating file's MTH hash.
337 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
338 packets. Lowering number of used primitives. Also, its encrypted
339 packet's header is used as an associated data during encryption.
342 MultiCast Discovery uses
343 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
346 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
349 @command{nncp-stat} reports about partly downloaded packets.
352 Updated dependencies.
357 @section Release 6.6.0
361 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
362 commands wait for all background checksummers completion after
363 connection is finished.
366 Added possibility of address determining through multicast announcement
367 in local area network, so called MCD (MultiCast Discovery).
372 @section Release 6.5.0
376 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
379 Fixed possible bad return code ignoring in automatic tosser.
382 Fixed race during file descriptors closing when online protocol call is
383 finished, that could lead to write error of received packet fragment.
386 Kill all packet transmission progress bars in @command{nncp-daemon},
387 @command{nncp-call} and @command{nncp-caller} when call is finished.
392 @section Release 6.4.0
396 Fixed possible race in online protocol, that lead to panic.
401 @section Release 6.3.0
405 Fixed possible panic while showing progress during online protocol.
410 @section Release 6.2.1
414 Three places in logs contained excess @code{%s}.
419 @section Release 6.2.0
423 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
426 Yet another logging refactoring and simplification.
427 Should be no visible differences to the end user.
432 @section Release 6.1.0
436 Optimization: most commands do not keep opened file descriptors now.
437 Previously you can exceed maximal number of opened files if you have got
438 many packets in the spool directory.
441 Optimization: do not close file descriptor of the file we download
442 online. Previously each chunk lead to expensive open/close calls.
445 Online downloaded files are saved with @file{.nock} (non-checksummed)
446 suffix, waiting either for @command{nncp-check}, or online daemons to
447 perform integrity check.
450 Optimization: files, that are not resumed, are checksummed immediately
451 during the online download, skipping @file{.nock}-intermediate step.
454 Ability to store encrypted packet's header in @file{.hdr} file, close to
455 the packet itself. That can greatly increase performance of packets
456 listing on filesystems with big block's size.
461 @section Release 6.0.0
465 Log uses human readable and easy machine parseable
466 @url{https://www.gnu.org/software/recutils/, recfile} format for the
467 records, instead of structured RFC 3339 lines. Old logs are not readable
468 by @command{nncp-log} anymore.
471 @option{-autotoss*} option workability with @command{nncp-daemon}'s
472 @option{-inetd} mode.
475 Call's @option{when-tx-exists} allows to make a call only when outbound
476 packets exists. Combined with seconds-aware cron expression that can be
477 used as some kind of auto dialler.
480 @command{nncp-cronexpr} command allows you to check validity and
481 expectations of specified cron expression.
486 @section Release 5.6.0
490 @option{-autotoss*} option runs tosser not after the call, but every
491 second while it is active.
494 @option{autotoss}, @option{autotoss-doseen},
495 @option{autotoss-nofile}, @option{autotoss-nofreq},
496 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
497 @option{calls} configuration section. You can configure per-call
498 automatic tosser options.
501 Use vendoring, instead of @env{$GOPATH} overriding during tarball
502 installation, because current minimal Go's version is 1.12 and it
508 @section Release 5.5.1
512 Respect for @env{$BINDIR}, @env{$INFODIR} and @env{$DOCDIR} environment
513 variables in @file{config} during installation.
518 @section Release 5.5.0
522 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
523 @command{nncp-bundle} and @command{nncp-stat}.
526 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
529 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
530 options now. Uncompressed packets are not compatible with previous NNCP
534 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
535 have @option{-autotoss*} options for running tosser after call is ended.
538 Updated dependencies. Minimal required Go version is 1.12.
543 @section Release 5.4.1
547 Fixed @code{SENDMAIL} variable usage during the build.
552 @section Release 5.4.0
556 Updated dependencies.
559 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
560 This should not influence package maintainers, because minimal @command{redo}
561 implementation is included in tarball.
566 @section Release 5.3.3
570 More various error checks.
573 Updated dependencies.
578 @section Release 5.3.2
582 Fixed incorrect logic of @option{onlinedeadline} timeout, where
583 connection won't take into account incoming packets events and will
584 forcefully disconnect.
589 @section Release 5.3.1
593 Fixed @option{onlinedeadline} workability with call addresses that use
594 external commands (@verb{#"|somecmd"#}).
597 @command{nncp-stat} has @option{-pkt} option displaying information
598 about each packet in the spool.
603 @section Release 5.3.0
607 Progress messages contain prefix, describing the running action.
610 Fixed not occurring handshake messages padding.
613 Finish all SP protocol related goroutines, less memory leak.
616 SP protocol generates less socket write calls, thus generating less TCP
620 Check @option{onlinedeadline} and @option{maxonlinetime} options every
621 second, independently from socket reads (up to 10 seconds).
624 Once per minute, if no other traffic exists, PING packets are sent in
625 SP-connection. That allows faster determining of connection unworkability.
628 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
633 @section Release 5.2.1
637 Fixed SP protocol error handling, sometimes causing program panic.
642 @section Release 5.2.0
646 Most commands by default show oneline operations progress.
647 @option{-progress}, @option{-noprogress} command line options,
648 @option{noprogress} configuration file option appeared.
651 Fixed incorrect @command{nncp-check} command return code, that returned
652 bad code when everything is good.
655 Free disk space check during @command{nncp-bundle -rx} call.
660 @section Release 5.1.2
664 @strong{Critical} vulnerability: remote peers authentication could lead
665 to incorrect identification of remote side, allowing foreign encrypted
669 Bugfix: private and public Noise keys were swapped in newly created
670 configuration files, that lead to inability to authenticate online peers.
673 Explicit directories fsync-ing for guaranteed files renaming.
678 @section Release 5.1.1
682 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
687 @section Release 5.1.0
691 @command{nncp-file} can send directories, automatically creating pax
695 Free disk space is checked during outbound packets creation.
698 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
699 file options replaced with the structure:
700 @option{freq: @{path: @dots{}, minsize: @dots{}, chunked: @dots{}@}}.
703 Added @option{freq.maxsize} configuration file option, forbidding of
704 freq sending larger than specified size.
707 Ability to notify about successfully executed commands (exec) with
708 @option{notify.exec} configuration file option.
713 @section Release 5.0.0
717 @strong{Incompatible} configuration file format change: YAML is
718 replaced with Hjson, due to its simplicity, without noticeable lack
719 of either functionality or convenience.
722 @strong{Incompatible} plain packet format changes. Older versions are
723 not supported. @code{zlib} compression is replaced with
724 @code{Zstandard}, due to its speed and efficiency, despite library
725 version is not mature enough.
728 Ability to call remote nodes via pipe call of external command, not only
732 @command{nncp-cfgnew} generates configuration file with many
733 comments. @option{-nocomments} option can be used for an old
737 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
738 avoid possible collisions with @file{.nncp.chunkCTR}.
741 Ability to override process umask through configuration file option.
744 Files and directories are created with 666/777 permissions by default,
745 allowing control with @command{umask}.
748 Updated dependencies.
751 Full usage of go modules for dependencies management
752 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
755 Forbid any later GNU GPL version autousage
756 (project's licence now is GNU GPLv3-only).
763 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
771 @strong{Incompatible} encrypted and eblob packet format change: AEAD
772 encryption mode with 128 KiB blocks is used now, because previously
773 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
774 decrypted data to external command. Older versions are not supported.
777 Available free space checking before copying in @command{nncp-xfer},
778 @command{nncp-daemon}, @command{nncp-call(er)}.
781 @command{nncp-call} has ability only to list packets on remote node,
782 without their transmission.
785 @command{nncp-call} has ability to transfer only specified packets.
788 Workability of @option{xxrate} preference in @option{calls}
789 configuration file section.
792 Dependant libraries are updated.
798 Begin using of @code{go.mod} subsystem.
805 @item @command{nncp-daemon} can be run as @command{inetd}-service.
813 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
814 if @file{.seen} exists and treat it like file was already downloaded.
815 Possibly it was transferred out-of-bound and remote side needs to be
819 If higher priority packet is spooled, then @command{nncp-daemon} will
820 queue its sending first, interrupting lower priority transmissions.
823 Simple packet rate limiter added to online-related tools
824 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
827 Ability to specify niceness with symbolic notation:
828 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
831 Changed default niceness levels:
832 for @command{nncp-exec} from 64 to 96,
833 for @command{nncp-freq} from 64 to 160,
834 for @command{nncp-file} from 196 to 224.
842 @strong{Incompatible} @emph{bundle} archive format changes and
843 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
844 valid tar archives, but Go 1.9 made them invalid because of long paths
845 inside. NNCP accidentally was dependant on that bug. Explicit adding of
846 @file{NNCP/} directory in archive restores workability with valid tar
854 Ability to disable relaying at all using @verb{|-via -|} command line option.
862 @strong{Incompatible} plain packet format changes. Older versions are
866 Ability to queue remote command execution, by configuring @option{exec}
867 option in configuration file and using @command{nncp-exec} command:
870 @command{nncp-mail} command is replaced with more flexible
871 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
872 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
874 @option{sendmail} configuration file option is replaced with
875 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
876 @verb{|exec: sendmail: [...]|}.
880 Ability to override @option{via} configuration option for destination
881 node via @option{-via} command line option for following commands:
882 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
885 Chunked files, having size less than specified chunk size, will be sent
886 as an ordinary single file.
889 Exec commands are invoked with additional @env{$NNCP_NICE} and
890 @env{$NNCP_SELF} environment variables.
893 Files, that are sent as a reply to freq, have niceness level taken from
894 the freq packet. You can set desired niceness during @command{nncp-freq}
895 invocation using @option{-replynice} option.
898 @command{nncp-toss} command can ignore specified packet types during
899 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
903 @command{nncp-file} command uses
904 @option{FreqMinSize}/@option{FreqChunked} configuration file options
905 for @option{-minsize}/@option{-chunked} by default. You can turn this
906 off by specifying zero value.
915 @strong{Incompatible} encrypted/eblob packet format changes. Older
916 versions are not supported.
919 Twofish encryption algorithm is replaced with ChaCha20. It is much more
920 faster. One cryptographic primitive less.
923 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
924 another cryptographic primitive less (assuming that BLAKE2X is nearly
925 identical to BLAKE2).
934 @strong{Incompatible} encrypted packet format changes. Older versions
938 @command{nncp-bundle} command can either create stream of encrypted
939 packets, or digest it. It is useful when dealing with
940 @code{stdin}/@code{stdout} based transmission methods (like writing to
941 CD-ROM without intermediate prepared ISO image and working with tape
945 @command{nncp-toss} is able to create @file{.seen} files preventing
946 duplicate packets receiving.
949 Single background checksum verifier worker is allowed in
950 @command{nncp-call}. This is helpful when thousands of small inbound
951 packets could create many goroutines.
954 Ability to override path to spool directory and logfile through either
955 command line argument, or environment variable.
958 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
959 @file{.part}, @file{.lock} and temporary files.
964 @section Release 0.12
966 @item Sendmail command is called with @env{$NNCP_SENDER} environment variable.
970 @section Release 0.11
972 @item @command{nncp-stat}'s command output is sorted by node name.
976 @section Release 0.10
979 @command{nncp-freq}'s @file{DST} argument is optional now. Last
980 @file{SRC} path's element will be used by default.
987 Fix @option{-rx}/@option{-tx} arguments processing in
988 @command{nncp-call} command. They were ignored.
995 Little bugfix in @command{nncp-file} command, where @option{-minsize}
996 option for unchunked transfer was not in KiBs, but in bytes.
1000 @section Release 0.7
1004 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
1005 encrypted temporary file for that.
1008 Chunked files transmission appeared with corresponding
1009 @command{nncp-reass} command and @option{freqchunked} configuration file
1010 entry. Useful for transferring big files over small storage devices.
1013 @option{freqminsize} configuration file option, analogue to
1014 @option{-minsize} one.
1017 @command{nncp-xfer}'s @option{-force} option is renamed to
1018 @option{-mkdir} for clarity.
1021 @option{-minsize} option is specified in KiBs, not bytes, for
1025 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
1026 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
1027 common prefix and are grouped together for convenience.
1030 @command{nncp-cfgenc} command appeared, allowing configuration file
1031 encryption/decryption, for keeping it safe without any either OpenPGP or
1032 similar tools usage.
1035 Cryptographic libraries (dependencies) are updated.
1040 @section Release 0.6
1042 @item Small @command{nncp-rm} command appeared.
1043 @item Cryptographic libraries (dependencies) are updated.
1047 @section Release 0.5
1050 Trivial small fix in default niceness level of @command{nncp-file}
1051 and @command{nncp-freq} commands.
1055 @section Release 0.4
1059 Small fix in @command{nncp-call}, @command{nncp-caller},
1060 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
1064 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
1065 and more convenient to use.
1068 @command{nncp-mincfg} command appeared: helper allowing to create
1069 minimalistic stripped down configuration file without private keys, that
1070 is useful during @command{nncp-xfer} usage.
1075 @section Release 0.3
1077 @item Fixed compatibility with Go 1.6.
1081 @section Release 0.2
1085 @strong{Incompatible} packet's format change (magic number is changed
1086 too): size field is encrypted and is not send in plaintext anymore.
1089 @option{-minsize} option gives ability to automatically pad outgoing
1090 packets to specified minimal size.
1093 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
1094 always check new @emph{tx} packets appearance in the background while
1095 connected. Remote side is immediately notified.
1098 @option{-onlinedeadline} option gives ability to configure timeout of
1099 inactivity of online connection, when it could be disconnected. It could
1100 be used to keep connection alive for a long time.
1103 @option{-maxonlinetime} option gives ability to set maximal allowable
1104 online connection aliveness time.
1107 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
1110 @command{nncp-pkt} command can decompress the data.