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.
21 @section Release 7.4.0
25 Fixed simultaneous @command{nncp-daemon} and @command{nncp-caller} MCD work.
30 @section Release 7.3.2
34 @command{hjson-cli} utility builds in vendor-mode now.
39 @section Release 7.3.1
43 Fixed possibly left opened file descriptor in online commands.
46 Severely decreased memory usage of MTH hashing.
51 @section Release 7.3.0
55 Fixed some workability problems on 32-bit systems with big files.
58 Ability to use directory with a bunch of files as a configuration.
59 @command{nncp-cfgdir} command appeared.
64 @section Release 7.2.1
68 Small optimizations in online commands.
73 @section Release 7.2.0
77 @command{nncp-trns} command appeared for manual transition packets creation.
80 If destination node of transitional packet has non empty @option{via}
81 route, then do not ignore, but use it.
84 Do not relay multicast packet to area message's originator, that
85 obviously has seen its own packet.
88 Much less memory usage during MTH hashing when offset is zero: when
89 packet is not resumed, but for example checked with @command{nncp-check}
95 @section Release 7.1.1
99 Fixed failing directories fsync after @file{.seen} file creation.
104 @section Release 7.1.0
108 Multicasting areas feature appeared. Implemented merely by an additional
109 plain packet type with @command{nncp-toss}, @command{nncp-file} and
110 @command{nncp-exec} commands modification.
113 Fixed workability of @command{nncp-file} and @command{nncp-exec}
114 commands, that use temporary file (stdin and @option{-use-tmp}).
117 Fixed disappearing bad return code in @command{nncp-exec} command.
120 Fixed invalid @file{.hdr} generation when transitional packets are used.
123 @option{-all} option appeared in @command{nncp-rm} command, applying to
124 all the nodes at once.
127 @option{-cycle} option appeared in @command{nncp-check} command, looping
128 the check in infinite cycle.
131 @command{nncp-rm} command can take node alias name.
134 @command{nncp-pkt} can parse @file{.hdr} files.
139 @section Release 7.0.0
143 Minimal required Go version 1.13.
146 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
147 Because of that, there are backward @strong{incompatible} changes of
148 encrypted files (everything laying in the spool directory) and
149 @file{.meta} files of chunked transfer.
151 Current implementation is far from being optimal: it lacks
152 parallelizable calculations and has higher memory consumption: nearly
153 512 KiB for each 1 GiB of file's data. Future performance and memory
154 size optimizations should not lead to packet's format change. But it is
155 still several times faster than BLAKE2b.
158 Resumed online downloads, because of MTH, require reading only of the
159 preceding part of file, not the whole one as was before.
162 @command{nncp-hash} utility appeared for calculating file's MTH hash.
165 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
166 packets. Lowering number of used primitives. Also, its encrypted
167 packet's header is used as an associated data during encryption.
170 MultiCast Discovery uses
171 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
174 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
177 @command{nncp-stat} reports about partly downloaded packets.
180 Updated dependencies.
185 @section Release 6.6.0
189 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
190 commands wait for all background checksummers completion after
191 connection is finished.
194 Added possibility of address determining through multicast announcement
195 in local area network, so called MCD (MultiCast Discovery).
200 @section Release 6.5.0
204 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
207 Fixed possible bad return code ignoring in automatic tosser.
210 Fixed race during file descriptors closing when online protocol call is
211 finished, that could lead to write error of received packet fragment.
214 Kill all packet transmission progress bars in @command{nncp-daemon},
215 @command{nncp-call} and @command{nncp-caller} when call is finished.
220 @section Release 6.4.0
224 Fixed possible race in online protocol, that lead to panic.
229 @section Release 6.3.0
233 Fixed possible panic while showing progress during online protocol.
238 @section Release 6.2.1
242 Three places in logs contained excess @code{%s}.
247 @section Release 6.2.0
251 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
254 Yet another logging refactoring and simplification.
255 Should be no visible differences to the end user.
260 @section Release 6.1.0
264 Optimization: most commands do not keep opened file descriptors now.
265 Previously you can exceed maximal number of opened files if you have got
266 many packets in the spool directory.
269 Optimization: do not close file descriptor of the file we download
270 online. Previously each chunk lead to expensive open/close calls.
273 Online downloaded files are saved with @file{.nock} (non-checksummed)
274 suffix, waiting either for @command{nncp-check}, or online daemons to
275 perform integrity check.
278 Optimization: files, that are not resumed, are checksummed immediately
279 during the online download, skipping @file{.nock}-intermediate step.
282 Ability to store encrypted packet's header in @file{.hdr} file, close to
283 the packet itself. That can greatly increase performance of packets
284 listing on filesystems with big block's size.
289 @section Release 6.0.0
293 Log uses human readable and easy machine parseable
294 @url{https://www.gnu.org/software/recutils/, recfile} format for the
295 records, instead of structured RFC 3339 lines. Old logs are not readable
296 by @command{nncp-log} anymore.
299 @option{-autotoss*} option workability with @command{nncp-daemon}'s
300 @option{-inetd} mode.
303 Call's @option{when-tx-exists} allows to make a call only when outbound
304 packets exists. Combined with seconds-aware cron expression that can be
305 used as some kind of auto dialler.
308 @command{nncp-cronexpr} command allows you to check validity and
309 expectations of specified cron expression.
314 @section Release 5.6.0
318 @option{-autotoss*} option runs tosser not after the call, but every
319 second while it is active.
322 @option{autotoss}, @option{autotoss-doseen},
323 @option{autotoss-nofile}, @option{autotoss-nofreq},
324 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
325 @option{calls} configuration section. You can configure per-call
326 automatic tosser options.
329 Use vendoring, instead of @env{GOPATH} overriding during tarball
330 installation, because current minimal Go's version is 1.12 and it
336 @section Release 5.5.1
340 Respect for @env{BINDIR}, @env{INFODIR} and @env{DOCDIR} environment
341 variables in @file{config} during installation.
346 @section Release 5.5.0
350 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
351 @command{nncp-bundle} and @command{nncp-stat}.
354 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
357 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
358 options now. Uncompressed packets are not compatible with previous NNCP
362 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
363 have @option{-autotoss*} options for running tosser after call is ended.
366 Updated dependencies. Minimal required Go version is 1.12.
371 @section Release 5.4.1
375 Fixed @code{SENDMAIL} variable usage during the build.
380 @section Release 5.4.0
384 Updated dependencies.
387 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
388 This should not influence package maintainers, because minimal @command{redo}
389 implementation is included in tarball.
394 @section Release 5.3.3
398 More various error checks.
401 Updated dependencies.
406 @section Release 5.3.2
410 Fixed incorrect logic of @option{onlinedeadline} timeout, where
411 connection won't take into account incoming packets events and will
412 forcefully disconnect.
417 @section Release 5.3.1
421 Fixed @option{onlinedeadline} workability with call addresses that use
422 external commands (@verb{#"|somecmd"#}).
425 @command{nncp-stat} has @option{-pkt} option displaying information
426 about each packet in the spool.
431 @section Release 5.3.0
435 Progress messages contain prefix, describing the running action.
438 Fixed not occurring handshake messages padding.
441 Finish all SP protocol related goroutines, less memory leak.
444 SP protocol generates less socket write calls, thus generating less TCP
448 Check @option{onlinedeadline} and @option{maxonlinetime} options every
449 second, independently from socket reads (up to 10 seconds).
452 Once per minute, if no other traffic exists, PING packets are sent in
453 SP-connection. That allows faster determining of connection unworkability.
456 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
461 @section Release 5.2.1
465 Fixed SP protocol error handling, sometimes causing program panic.
470 @section Release 5.2.0
474 Most commands by default show oneline operations progress.
475 @option{-progress}, @option{-noprogress} command line options,
476 @option{noprogress} configuration file option appeared.
479 Fixed incorrect @command{nncp-check} command return code, that returned
480 bad code when everything is good.
483 Free disk space check during @command{nncp-bundle -rx} call.
488 @section Release 5.1.2
492 @strong{Critical} vulnerability: remote peers authentication could lead
493 to incorrect identification of remote side, allowing foreign encrypted
497 Bugfix: private and public Noise keys were swapped in newly created
498 configuration files, that lead to inability to authenticate online peers.
501 Explicit directories fsync-ing for guaranteed files renaming.
506 @section Release 5.1.1
510 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
515 @section Release 5.1.0
519 @command{nncp-file} can send directories, automatically creating pax
523 Free disk space is checked during outbound packets creation.
526 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
527 file options replaced with the structure:
528 @option{freq: @{path: ..., minsize: ..., chunked: ...@}}.
531 Added @option{freq.maxsize} configuration file option, forbidding of
532 freq sending larger than specified size.
535 Ability to notify about successfully executed commands (exec) with
536 @option{notify.exec} configuration file option.
541 @section Release 5.0.0
545 @strong{Incompatible} configuration file format change: YAML is
546 replaced with Hjson, due to its simplicity, without noticeable lack
547 of either functionality or convenience.
550 @strong{Incompatible} plain packet format changes. Older versions are
551 not supported. @code{zlib} compression is replaced with
552 @code{Zstandard}, due to its speed and efficiency, despite library
553 version is not mature enough.
556 Ability to call remote nodes via pipe call of external command, not only
560 @command{nncp-cfgnew} generates configuration file with many
561 comments. @option{-nocomments} option can be used for an old
565 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
566 avoid possible collisions with @file{.nncp.chunkCTR}.
569 Ability to override process umask through configuration file option.
572 Files and directories are created with 666/777 permissions by default,
573 allowing control with @command{umask}.
576 Updated dependencies.
579 Full usage of go modules for dependencies management
580 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
583 Forbid any later GNU GPL version autousage
584 (project's licence now is GNU GPLv3-only).
591 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
599 @strong{Incompatible} encrypted and eblob packet format change: AEAD
600 encryption mode with 128 KiB blocks is used now, because previously
601 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
602 decrypted data to external command. Older versions are not supported.
605 Available free space checking before copying in @command{nncp-xfer},
606 @command{nncp-daemon}, @command{nncp-call(er)}.
609 @command{nncp-call} has ability only to list packets on remote node,
610 without their transmission.
613 @command{nncp-call} has ability to transfer only specified packets.
616 Workability of @option{xxrate} preference in @option{calls}
617 configuration file section.
620 Dependant libraries are updated.
626 Begin using of @code{go.mod} subsystem.
633 @item @command{nncp-daemon} can be run as @command{inetd}-service.
641 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
642 if @file{.seen} exists and treat it like file was already downloaded.
643 Possibly it was transferred out-of-bound and remote side needs to be
647 If higher priority packet is spooled, then @command{nncp-daemon} will
648 queue its sending first, interrupting lower priority transmissions.
651 Simple packet rate limiter added to online-related tools
652 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
655 Ability to specify niceness with symbolic notation:
656 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
659 Changed default niceness levels:
660 for @command{nncp-exec} from 64 to 96,
661 for @command{nncp-freq} from 64 to 160,
662 for @command{nncp-file} from 196 to 224.
670 @strong{Incompatible} @emph{bundle} archive format changes and
671 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
672 valid tar archives, but Go 1.9 made them invalid because of long paths
673 inside. NNCP accidentally was dependant on that bug. Explicit adding of
674 @file{NNCP/} directory in archive restores workability with valid tar
682 Ability to disable relaying at all using @verb{|-via -|} command line option.
690 @strong{Incompatible} plain packet format changes. Older versions are
694 Ability to queue remote command execution, by configuring @option{exec}
695 option in configuration file and using @command{nncp-exec} command:
698 @command{nncp-mail} command is replaced with more flexible
699 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
700 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
702 @option{sendmail} configuration file option is replaced with
703 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
704 @verb{|exec: sendmail: [...]|}.
708 Ability to override @option{via} configuration option for destination
709 node via @option{-via} command line option for following commands:
710 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
713 Chunked files, having size less than specified chunk size, will be sent
714 as an ordinary single file.
717 Exec commands are invoked with additional @env{NNCP_NICE} and
718 @env{NNCP_SELF} environment variables.
721 Files, that are sent as a reply to freq, have niceness level taken from
722 the freq packet. You can set desired niceness during @command{nncp-freq}
723 invocation using @option{-replynice} option.
726 @command{nncp-toss} command can ignore specified packet types during
727 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
731 @command{nncp-file} command uses
732 @option{FreqMinSize}/@option{FreqChunked} configuration file options
733 for @option{-minsize}/@option{-chunked} by default. You can turn this
734 off by specifying zero value.
743 @strong{Incompatible} encrypted/eblob packet format changes. Older
744 versions are not supported.
747 Twofish encryption algorithm is replaced with ChaCha20. It is much more
748 faster. One cryptographic primitive less.
751 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
752 another cryptographic primitive less (assuming that BLAKE2X is nearly
753 identical to BLAKE2).
762 @strong{Incompatible} encrypted packet format changes. Older versions
766 @command{nncp-bundle} command can either create stream of encrypted
767 packets, or digest it. It is useful when dealing with
768 @code{stdin}/@code{stdout} based transmission methods (like writing to
769 CD-ROM without intermediate prepared ISO image and working with tape
773 @command{nncp-toss} is able to create @file{.seen} files preventing
774 duplicate packets receiving.
777 Single background checksum verifier worker is allowed in
778 @command{nncp-call}. This is helpful when thousands of small inbound
779 packets could create many goroutines.
782 Ability to override path to spool directory and logfile through either
783 command line argument, or environment variable.
786 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
787 @file{.part}, @file{.lock} and temporary files.
792 @section Release 0.12
794 @item Sendmail command is called with @env{NNCP_SENDER} environment variable.
798 @section Release 0.11
800 @item @command{nncp-stat}'s command output is sorted by node name.
804 @section Release 0.10
807 @command{nncp-freq}'s @file{DST} argument is optional now. Last
808 @file{SRC} path's element will be used by default.
815 Fix @option{-rx}/@option{-tx} arguments processing in
816 @command{nncp-call} command. They were ignored.
823 Little bugfix in @command{nncp-file} command, where @option{-minsize}
824 option for unchunked transfer was not in KiBs, but in bytes.
832 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
833 encrypted temporary file for that.
836 Chunked files transmission appeared with corresponding
837 @command{nncp-reass} command and @option{freqchunked} configuration file
838 entry. Useful for transferring big files over small storage devices.
841 @option{freqminsize} configuration file option, analogue to
842 @option{-minsize} one.
845 @command{nncp-xfer}'s @option{-force} option is renamed to
846 @option{-mkdir} for clarity.
849 @option{-minsize} option is specified in KiBs, not bytes, for
853 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
854 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
855 common prefix and are grouped together for convenience.
858 @command{nncp-cfgenc} command appeared, allowing configuration file
859 encryption/decryption, for keeping it safe without any either OpenPGP or
863 Cryptographic libraries (dependencies) are updated.
870 @item Small @command{nncp-rm} command appeared.
871 @item Cryptographic libraries (dependencies) are updated.
878 Trivial small fix in default niceness level of @command{nncp-file}
879 and @command{nncp-freq} commands.
887 Small fix in @command{nncp-call}, @command{nncp-caller},
888 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
892 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
893 and more convenient to use.
896 @command{nncp-mincfg} command appeared: helper allowing to create
897 minimalistic stripped down configuration file without private keys, that
898 is useful during @command{nncp-xfer} usage.
905 @item Fixed compatibility with Go 1.6.
913 @strong{Incompatible} packet's format change (magic number is changed
914 too): size field is encrypted and is not send in plaintext anymore.
917 @option{-minsize} option gives ability to automatically pad outgoing
918 packets to specified minimal size.
921 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
922 always check new @emph{tx} packets appearance in the background while
923 connected. Remote side is immediately notified.
926 @option{-onlinedeadline} option gives ability to configure timeout of
927 inactivity of online connection, when it could be disconnected. It could
928 be used to keep connection alive for a long time.
931 @option{-maxonlinetime} option gives ability to set maximal allowable
932 online connection aliveness time.
935 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
938 @command{nncp-pkt} command can decompress the data.