4 See also this page @ref{Новости, on russian}.
11 @command{nncp-daemon} is compatible with UCSPI-TCP interface, so log
12 will contain remote side's address (when running under appropriate
13 utility). @option{-ucspi} option should be used instead of @option{-inetd}.
16 @command{nncp-call} can be UCSPI-TCP client, using @option{-ucspi} option.
19 Do not exit if some of MCD network interfaces can not be listened --
25 @section Release 7.4.0
29 Fixed simultaneous @command{nncp-daemon} and @command{nncp-caller} MCD work.
34 @section Release 7.3.2
38 @command{hjson-cli} utility builds in vendor-mode now.
43 @section Release 7.3.1
47 Fixed possibly left opened file descriptor in online commands.
50 Severely decreased memory usage of MTH hashing.
55 @section Release 7.3.0
59 Fixed some workability problems on 32-bit systems with big files.
62 Ability to use directory with a bunch of files as a configuration.
63 @command{nncp-cfgdir} command appeared.
68 @section Release 7.2.1
72 Small optimizations in online commands.
77 @section Release 7.2.0
81 @command{nncp-trns} command appeared for manual transition packets creation.
84 If destination node of transitional packet has non empty @option{via}
85 route, then do not ignore, but use it.
88 Do not relay multicast packet to area message's originator, that
89 obviously has seen its own packet.
92 Much less memory usage during MTH hashing when offset is zero: when
93 packet is not resumed, but for example checked with @command{nncp-check}
99 @section Release 7.1.1
103 Fixed failing directories fsync after @file{.seen} file creation.
108 @section Release 7.1.0
112 Multicasting areas feature appeared. Implemented merely by an additional
113 plain packet type with @command{nncp-toss}, @command{nncp-file} and
114 @command{nncp-exec} commands modification.
117 Fixed workability of @command{nncp-file} and @command{nncp-exec}
118 commands, that use temporary file (stdin and @option{-use-tmp}).
121 Fixed disappearing bad return code in @command{nncp-exec} command.
124 Fixed invalid @file{.hdr} generation when transitional packets are used.
127 @option{-all} option appeared in @command{nncp-rm} command, applying to
128 all the nodes at once.
131 @option{-cycle} option appeared in @command{nncp-check} command, looping
132 the check in infinite cycle.
135 @command{nncp-rm} command can take node alias name.
138 @command{nncp-pkt} can parse @file{.hdr} files.
143 @section Release 7.0.0
147 Minimal required Go version 1.13.
150 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
151 Because of that, there are backward @strong{incompatible} changes of
152 encrypted files (everything laying in the spool directory) and
153 @file{.meta} files of chunked transfer.
155 Current implementation is far from being optimal: it lacks
156 parallelizable calculations and has higher memory consumption: nearly
157 512 KiB for each 1 GiB of file's data. Future performance and memory
158 size optimizations should not lead to packet's format change. But it is
159 still several times faster than BLAKE2b.
162 Resumed online downloads, because of MTH, require reading only of the
163 preceding part of file, not the whole one as was before.
166 @command{nncp-hash} utility appeared for calculating file's MTH hash.
169 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
170 packets. Lowering number of used primitives. Also, its encrypted
171 packet's header is used as an associated data during encryption.
174 MultiCast Discovery uses
175 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
178 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
181 @command{nncp-stat} reports about partly downloaded packets.
184 Updated dependencies.
189 @section Release 6.6.0
193 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
194 commands wait for all background checksummers completion after
195 connection is finished.
198 Added possibility of address determining through multicast announcement
199 in local area network, so called MCD (MultiCast Discovery).
204 @section Release 6.5.0
208 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
211 Fixed possible bad return code ignoring in automatic tosser.
214 Fixed race during file descriptors closing when online protocol call is
215 finished, that could lead to write error of received packet fragment.
218 Kill all packet transmission progress bars in @command{nncp-daemon},
219 @command{nncp-call} and @command{nncp-caller} when call is finished.
224 @section Release 6.4.0
228 Fixed possible race in online protocol, that lead to panic.
233 @section Release 6.3.0
237 Fixed possible panic while showing progress during online protocol.
242 @section Release 6.2.1
246 Three places in logs contained excess @code{%s}.
251 @section Release 6.2.0
255 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
258 Yet another logging refactoring and simplification.
259 Should be no visible differences to the end user.
264 @section Release 6.1.0
268 Optimization: most commands do not keep opened file descriptors now.
269 Previously you can exceed maximal number of opened files if you have got
270 many packets in the spool directory.
273 Optimization: do not close file descriptor of the file we download
274 online. Previously each chunk lead to expensive open/close calls.
277 Online downloaded files are saved with @file{.nock} (non-checksummed)
278 suffix, waiting either for @command{nncp-check}, or online daemons to
279 perform integrity check.
282 Optimization: files, that are not resumed, are checksummed immediately
283 during the online download, skipping @file{.nock}-intermediate step.
286 Ability to store encrypted packet's header in @file{.hdr} file, close to
287 the packet itself. That can greatly increase performance of packets
288 listing on filesystems with big block's size.
293 @section Release 6.0.0
297 Log uses human readable and easy machine parseable
298 @url{https://www.gnu.org/software/recutils/, recfile} format for the
299 records, instead of structured RFC 3339 lines. Old logs are not readable
300 by @command{nncp-log} anymore.
303 @option{-autotoss*} option workability with @command{nncp-daemon}'s
304 @option{-inetd} mode.
307 Call's @option{when-tx-exists} allows to make a call only when outbound
308 packets exists. Combined with seconds-aware cron expression that can be
309 used as some kind of auto dialler.
312 @command{nncp-cronexpr} command allows you to check validity and
313 expectations of specified cron expression.
318 @section Release 5.6.0
322 @option{-autotoss*} option runs tosser not after the call, but every
323 second while it is active.
326 @option{autotoss}, @option{autotoss-doseen},
327 @option{autotoss-nofile}, @option{autotoss-nofreq},
328 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
329 @option{calls} configuration section. You can configure per-call
330 automatic tosser options.
333 Use vendoring, instead of @env{GOPATH} overriding during tarball
334 installation, because current minimal Go's version is 1.12 and it
340 @section Release 5.5.1
344 Respect for @env{BINDIR}, @env{INFODIR} and @env{DOCDIR} environment
345 variables in @file{config} during installation.
350 @section Release 5.5.0
354 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
355 @command{nncp-bundle} and @command{nncp-stat}.
358 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
361 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
362 options now. Uncompressed packets are not compatible with previous NNCP
366 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
367 have @option{-autotoss*} options for running tosser after call is ended.
370 Updated dependencies. Minimal required Go version is 1.12.
375 @section Release 5.4.1
379 Fixed @code{SENDMAIL} variable usage during the build.
384 @section Release 5.4.0
388 Updated dependencies.
391 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
392 This should not influence package maintainers, because minimal @command{redo}
393 implementation is included in tarball.
398 @section Release 5.3.3
402 More various error checks.
405 Updated dependencies.
410 @section Release 5.3.2
414 Fixed incorrect logic of @option{onlinedeadline} timeout, where
415 connection won't take into account incoming packets events and will
416 forcefully disconnect.
421 @section Release 5.3.1
425 Fixed @option{onlinedeadline} workability with call addresses that use
426 external commands (@verb{#"|somecmd"#}).
429 @command{nncp-stat} has @option{-pkt} option displaying information
430 about each packet in the spool.
435 @section Release 5.3.0
439 Progress messages contain prefix, describing the running action.
442 Fixed not occurring handshake messages padding.
445 Finish all SP protocol related goroutines, less memory leak.
448 SP protocol generates less socket write calls, thus generating less TCP
452 Check @option{onlinedeadline} and @option{maxonlinetime} options every
453 second, independently from socket reads (up to 10 seconds).
456 Once per minute, if no other traffic exists, PING packets are sent in
457 SP-connection. That allows faster determining of connection unworkability.
460 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
465 @section Release 5.2.1
469 Fixed SP protocol error handling, sometimes causing program panic.
474 @section Release 5.2.0
478 Most commands by default show oneline operations progress.
479 @option{-progress}, @option{-noprogress} command line options,
480 @option{noprogress} configuration file option appeared.
483 Fixed incorrect @command{nncp-check} command return code, that returned
484 bad code when everything is good.
487 Free disk space check during @command{nncp-bundle -rx} call.
492 @section Release 5.1.2
496 @strong{Critical} vulnerability: remote peers authentication could lead
497 to incorrect identification of remote side, allowing foreign encrypted
501 Bugfix: private and public Noise keys were swapped in newly created
502 configuration files, that lead to inability to authenticate online peers.
505 Explicit directories fsync-ing for guaranteed files renaming.
510 @section Release 5.1.1
514 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
519 @section Release 5.1.0
523 @command{nncp-file} can send directories, automatically creating pax
527 Free disk space is checked during outbound packets creation.
530 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
531 file options replaced with the structure:
532 @option{freq: @{path: @dots{}, minsize: @dots{}, chunked: @dots{}@}}.
535 Added @option{freq.maxsize} configuration file option, forbidding of
536 freq sending larger than specified size.
539 Ability to notify about successfully executed commands (exec) with
540 @option{notify.exec} configuration file option.
545 @section Release 5.0.0
549 @strong{Incompatible} configuration file format change: YAML is
550 replaced with Hjson, due to its simplicity, without noticeable lack
551 of either functionality or convenience.
554 @strong{Incompatible} plain packet format changes. Older versions are
555 not supported. @code{zlib} compression is replaced with
556 @code{Zstandard}, due to its speed and efficiency, despite library
557 version is not mature enough.
560 Ability to call remote nodes via pipe call of external command, not only
564 @command{nncp-cfgnew} generates configuration file with many
565 comments. @option{-nocomments} option can be used for an old
569 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
570 avoid possible collisions with @file{.nncp.chunkCTR}.
573 Ability to override process umask through configuration file option.
576 Files and directories are created with 666/777 permissions by default,
577 allowing control with @command{umask}.
580 Updated dependencies.
583 Full usage of go modules for dependencies management
584 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
587 Forbid any later GNU GPL version autousage
588 (project's licence now is GNU GPLv3-only).
595 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
603 @strong{Incompatible} encrypted and eblob packet format change: AEAD
604 encryption mode with 128 KiB blocks is used now, because previously
605 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
606 decrypted data to external command. Older versions are not supported.
609 Available free space checking before copying in @command{nncp-xfer},
610 @command{nncp-daemon}, @command{nncp-call(er)}.
613 @command{nncp-call} has ability only to list packets on remote node,
614 without their transmission.
617 @command{nncp-call} has ability to transfer only specified packets.
620 Workability of @option{xxrate} preference in @option{calls}
621 configuration file section.
624 Dependant libraries are updated.
630 Begin using of @code{go.mod} subsystem.
637 @item @command{nncp-daemon} can be run as @command{inetd}-service.
645 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
646 if @file{.seen} exists and treat it like file was already downloaded.
647 Possibly it was transferred out-of-bound and remote side needs to be
651 If higher priority packet is spooled, then @command{nncp-daemon} will
652 queue its sending first, interrupting lower priority transmissions.
655 Simple packet rate limiter added to online-related tools
656 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
659 Ability to specify niceness with symbolic notation:
660 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
663 Changed default niceness levels:
664 for @command{nncp-exec} from 64 to 96,
665 for @command{nncp-freq} from 64 to 160,
666 for @command{nncp-file} from 196 to 224.
674 @strong{Incompatible} @emph{bundle} archive format changes and
675 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
676 valid tar archives, but Go 1.9 made them invalid because of long paths
677 inside. NNCP accidentally was dependant on that bug. Explicit adding of
678 @file{NNCP/} directory in archive restores workability with valid tar
686 Ability to disable relaying at all using @verb{|-via -|} command line option.
694 @strong{Incompatible} plain packet format changes. Older versions are
698 Ability to queue remote command execution, by configuring @option{exec}
699 option in configuration file and using @command{nncp-exec} command:
702 @command{nncp-mail} command is replaced with more flexible
703 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
704 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
706 @option{sendmail} configuration file option is replaced with
707 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
708 @verb{|exec: sendmail: [...]|}.
712 Ability to override @option{via} configuration option for destination
713 node via @option{-via} command line option for following commands:
714 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
717 Chunked files, having size less than specified chunk size, will be sent
718 as an ordinary single file.
721 Exec commands are invoked with additional @env{NNCP_NICE} and
722 @env{NNCP_SELF} environment variables.
725 Files, that are sent as a reply to freq, have niceness level taken from
726 the freq packet. You can set desired niceness during @command{nncp-freq}
727 invocation using @option{-replynice} option.
730 @command{nncp-toss} command can ignore specified packet types during
731 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
735 @command{nncp-file} command uses
736 @option{FreqMinSize}/@option{FreqChunked} configuration file options
737 for @option{-minsize}/@option{-chunked} by default. You can turn this
738 off by specifying zero value.
747 @strong{Incompatible} encrypted/eblob packet format changes. Older
748 versions are not supported.
751 Twofish encryption algorithm is replaced with ChaCha20. It is much more
752 faster. One cryptographic primitive less.
755 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
756 another cryptographic primitive less (assuming that BLAKE2X is nearly
757 identical to BLAKE2).
766 @strong{Incompatible} encrypted packet format changes. Older versions
770 @command{nncp-bundle} command can either create stream of encrypted
771 packets, or digest it. It is useful when dealing with
772 @code{stdin}/@code{stdout} based transmission methods (like writing to
773 CD-ROM without intermediate prepared ISO image and working with tape
777 @command{nncp-toss} is able to create @file{.seen} files preventing
778 duplicate packets receiving.
781 Single background checksum verifier worker is allowed in
782 @command{nncp-call}. This is helpful when thousands of small inbound
783 packets could create many goroutines.
786 Ability to override path to spool directory and logfile through either
787 command line argument, or environment variable.
790 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
791 @file{.part}, @file{.lock} and temporary files.
796 @section Release 0.12
798 @item Sendmail command is called with @env{NNCP_SENDER} environment variable.
802 @section Release 0.11
804 @item @command{nncp-stat}'s command output is sorted by node name.
808 @section Release 0.10
811 @command{nncp-freq}'s @file{DST} argument is optional now. Last
812 @file{SRC} path's element will be used by default.
819 Fix @option{-rx}/@option{-tx} arguments processing in
820 @command{nncp-call} command. They were ignored.
827 Little bugfix in @command{nncp-file} command, where @option{-minsize}
828 option for unchunked transfer was not in KiBs, but in bytes.
836 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
837 encrypted temporary file for that.
840 Chunked files transmission appeared with corresponding
841 @command{nncp-reass} command and @option{freqchunked} configuration file
842 entry. Useful for transferring big files over small storage devices.
845 @option{freqminsize} configuration file option, analogue to
846 @option{-minsize} one.
849 @command{nncp-xfer}'s @option{-force} option is renamed to
850 @option{-mkdir} for clarity.
853 @option{-minsize} option is specified in KiBs, not bytes, for
857 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
858 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
859 common prefix and are grouped together for convenience.
862 @command{nncp-cfgenc} command appeared, allowing configuration file
863 encryption/decryption, for keeping it safe without any either OpenPGP or
867 Cryptographic libraries (dependencies) are updated.
874 @item Small @command{nncp-rm} command appeared.
875 @item Cryptographic libraries (dependencies) are updated.
882 Trivial small fix in default niceness level of @command{nncp-file}
883 and @command{nncp-freq} commands.
891 Small fix in @command{nncp-call}, @command{nncp-caller},
892 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
896 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
897 and more convenient to use.
900 @command{nncp-mincfg} command appeared: helper allowing to create
901 minimalistic stripped down configuration file without private keys, that
902 is useful during @command{nncp-xfer} usage.
909 @item Fixed compatibility with Go 1.6.
917 @strong{Incompatible} packet's format change (magic number is changed
918 too): size field is encrypted and is not send in plaintext anymore.
921 @option{-minsize} option gives ability to automatically pad outgoing
922 packets to specified minimal size.
925 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
926 always check new @emph{tx} packets appearance in the background while
927 connected. Remote side is immediately notified.
930 @option{-onlinedeadline} option gives ability to configure timeout of
931 inactivity of online connection, when it could be disconnected. It could
932 be used to keep connection alive for a long time.
935 @option{-maxonlinetime} option gives ability to set maximal allowable
936 online connection aliveness time.
939 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
942 @command{nncp-pkt} command can decompress the data.