4 See also this page @ref{Новости, on russian}.
11 Fixed simultaneous @command{nncp-daemon} and @command{nncp-caller} MCD work.
16 @section Release 7.3.2
20 @command{hjson-cli} utility builds in vendor-mode now.
25 @section Release 7.3.1
29 Fixed possibly left opened file descriptor in online commands.
32 Severely decreased memory usage of MTH hashing.
37 @section Release 7.3.0
41 Fixed some workability problems on 32-bit systems with big files.
44 Ability to use directory with a bunch of files as a configuration.
45 @command{nncp-cfgdir} command appeared.
50 @section Release 7.2.1
54 Small optimizations in online commands.
59 @section Release 7.2.0
63 @command{nncp-trns} command appeared for manual transition packets creation.
66 If destination node of transitional packet has non empty @option{via}
67 route, then do not ignore, but use it.
70 Do not relay multicast packet to area message's originator, that
71 obviously has seen its own packet.
74 Much less memory usage during MTH hashing when offset is zero: when
75 packet is not resumed, but for example checked with @command{nncp-check}
81 @section Release 7.1.1
85 Fixed failing directories fsync after @file{.seen} file creation.
90 @section Release 7.1.0
94 Multicasting areas feature appeared. Implemented merely by an additional
95 plain packet type with @command{nncp-toss}, @command{nncp-file} and
96 @command{nncp-exec} commands modification.
99 Fixed workability of @command{nncp-file} and @command{nncp-exec}
100 commands, that use temporary file (stdin and @option{-use-tmp}).
103 Fixed disappearing bad return code in @command{nncp-exec} command.
106 Fixed invalid @file{.hdr} generation when transitional packets are used.
109 @option{-all} option appeared in @command{nncp-rm} command, applying to
110 all the nodes at once.
113 @option{-cycle} option appeared in @command{nncp-check} command, looping
114 the check in infinite cycle.
117 @command{nncp-rm} command can take node alias name.
120 @command{nncp-pkt} can parse @file{.hdr} files.
125 @section Release 7.0.0
129 Minimal required Go version 1.13.
132 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
133 Because of that, there are backward @strong{incompatible} changes of
134 encrypted files (everything laying in the spool directory) and
135 @file{.meta} files of chunked transfer.
137 Current implementation is far from being optimal: it lacks
138 parallelizable calculations and has higher memory consumption: nearly
139 512 KiB for each 1 GiB of file's data. Future performance and memory
140 size optimizations should not lead to packet's format change. But it is
141 still several times faster than BLAKE2b.
144 Resumed online downloads, because of MTH, require reading only of the
145 preceding part of file, not the whole one as was before.
148 @command{nncp-hash} utility appeared for calculating file's MTH hash.
151 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
152 packets. Lowering number of used primitives. Also, its encrypted
153 packet's header is used as an associated data during encryption.
156 MultiCast Discovery uses
157 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
160 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
163 @command{nncp-stat} reports about partly downloaded packets.
166 Updated dependencies.
171 @section Release 6.6.0
175 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
176 commands wait for all background checksummers completion after
177 connection is finished.
180 Added possibility of address determining through multicast announcement
181 in local area network, so called MCD (MultiCast Discovery).
186 @section Release 6.5.0
190 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
193 Fixed possible bad return code ignoring in automatic tosser.
196 Fixed race during file descriptors closing when online protocol call is
197 finished, that could lead to write error of received packet fragment.
200 Kill all packet transmission progress bars in @command{nncp-daemon},
201 @command{nncp-call} and @command{nncp-caller} when call is finished.
206 @section Release 6.4.0
210 Fixed possible race in online protocol, that lead to panic.
215 @section Release 6.3.0
219 Fixed possible panic while showing progress during online protocol.
224 @section Release 6.2.1
228 Three places in logs contained excess @code{%s}.
233 @section Release 6.2.0
237 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
240 Yet another logging refactoring and simplification.
241 Should be no visible differences to the end user.
246 @section Release 6.1.0
250 Optimization: most commands do not keep opened file descriptors now.
251 Previously you can exceed maximal number of opened files if you have got
252 many packets in the spool directory.
255 Optimization: do not close file descriptor of the file we download
256 online. Previously each chunk lead to expensive open/close calls.
259 Online downloaded files are saved with @file{.nock} (non-checksummed)
260 suffix, waiting either for @command{nncp-check}, or online daemons to
261 perform integrity check.
264 Optimization: files, that are not resumed, are checksummed immediately
265 during the online download, skipping @file{.nock}-intermediate step.
268 Ability to store encrypted packet's header in @file{.hdr} file, close to
269 the packet itself. That can greatly increase performance of packets
270 listing on filesystems with big block's size.
275 @section Release 6.0.0
279 Log uses human readable and easy machine parseable
280 @url{https://www.gnu.org/software/recutils/, recfile} format for the
281 records, instead of structured RFC 3339 lines. Old logs are not readable
282 by @command{nncp-log} anymore.
285 @option{-autotoss*} option workability with @command{nncp-daemon}'s
286 @option{-inetd} mode.
289 Call's @option{when-tx-exists} allows to make a call only when outbound
290 packets exists. Combined with seconds-aware cron expression that can be
291 used as some kind of auto dialler.
294 @command{nncp-cronexpr} command allows you to check validity and
295 expectations of specified cron expression.
300 @section Release 5.6.0
304 @option{-autotoss*} option runs tosser not after the call, but every
305 second while it is active.
308 @option{autotoss}, @option{autotoss-doseen},
309 @option{autotoss-nofile}, @option{autotoss-nofreq},
310 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
311 @option{calls} configuration section. You can configure per-call
312 automatic tosser options.
315 Use vendoring, instead of @env{GOPATH} overriding during tarball
316 installation, because current minimal Go's version is 1.12 and it
322 @section Release 5.5.1
326 Respect for @env{BINDIR}, @env{INFODIR} and @env{DOCDIR} environment
327 variables in @file{config} during installation.
332 @section Release 5.5.0
336 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
337 @command{nncp-bundle} and @command{nncp-stat}.
340 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
343 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
344 options now. Uncompressed packets are not compatible with previous NNCP
348 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
349 have @option{-autotoss*} options for running tosser after call is ended.
352 Updated dependencies. Minimal required Go version is 1.12.
357 @section Release 5.4.1
361 Fixed @code{SENDMAIL} variable usage during the build.
366 @section Release 5.4.0
370 Updated dependencies.
373 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
374 This should not influence package maintainers, because minimal @command{redo}
375 implementation is included in tarball.
380 @section Release 5.3.3
384 More various error checks.
387 Updated dependencies.
392 @section Release 5.3.2
396 Fixed incorrect logic of @option{onlinedeadline} timeout, where
397 connection won't take into account incoming packets events and will
398 forcefully disconnect.
403 @section Release 5.3.1
407 Fixed @option{onlinedeadline} workability with call addresses that use
408 external commands (@verb{#"|somecmd"#}).
411 @command{nncp-stat} has @option{-pkt} option displaying information
412 about each packet in the spool.
417 @section Release 5.3.0
421 Progress messages contain prefix, describing the running action.
424 Fixed not occurring handshake messages padding.
427 Finish all SP protocol related goroutines, less memory leak.
430 SP protocol generates less socket write calls, thus generating less TCP
434 Check @option{onlinedeadline} and @option{maxonlinetime} options every
435 second, independently from socket reads (up to 10 seconds).
438 Once per minute, if no other traffic exists, PING packets are sent in
439 SP-connection. That allows faster determining of connection unworkability.
442 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
447 @section Release 5.2.1
451 Fixed SP protocol error handling, sometimes causing program panic.
456 @section Release 5.2.0
460 Most commands by default show oneline operations progress.
461 @option{-progress}, @option{-noprogress} command line options,
462 @option{noprogress} configuration file option appeared.
465 Fixed incorrect @command{nncp-check} command return code, that returned
466 bad code when everything is good.
469 Free disk space check during @command{nncp-bundle -rx} call.
474 @section Release 5.1.2
478 @strong{Critical} vulnerability: remote peers authentication could lead
479 to incorrect identification of remote side, allowing foreign encrypted
483 Bugfix: private and public Noise keys were swapped in newly created
484 configuration files, that lead to inability to authenticate online peers.
487 Explicit directories fsync-ing for guaranteed files renaming.
492 @section Release 5.1.1
496 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
501 @section Release 5.1.0
505 @command{nncp-file} can send directories, automatically creating pax
509 Free disk space is checked during outbound packets creation.
512 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
513 file options replaced with the structure:
514 @option{freq: @{path: ..., minsize: ..., chunked: ...@}}.
517 Added @option{freq.maxsize} configuration file option, forbidding of
518 freq sending larger than specified size.
521 Ability to notify about successfully executed commands (exec) with
522 @option{notify.exec} configuration file option.
527 @section Release 5.0.0
531 @strong{Incompatible} configuration file format change: YAML is
532 replaced with Hjson, due to its simplicity, without noticeable lack
533 of either functionality or convenience.
536 @strong{Incompatible} plain packet format changes. Older versions are
537 not supported. @code{zlib} compression is replaced with
538 @code{Zstandard}, due to its speed and efficiency, despite library
539 version is not mature enough.
542 Ability to call remote nodes via pipe call of external command, not only
546 @command{nncp-cfgnew} generates configuration file with many
547 comments. @option{-nocomments} option can be used for an old
551 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
552 avoid possible collisions with @file{.nncp.chunkCTR}.
555 Ability to override process umask through configuration file option.
558 Files and directories are created with 666/777 permissions by default,
559 allowing control with @command{umask}.
562 Updated dependencies.
565 Full usage of go modules for dependencies management
566 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
569 Forbid any later GNU GPL version autousage
570 (project's licence now is GNU GPLv3-only).
577 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
585 @strong{Incompatible} encrypted and eblob packet format change: AEAD
586 encryption mode with 128 KiB blocks is used now, because previously
587 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
588 decrypted data to external command. Older versions are not supported.
591 Available free space checking before copying in @command{nncp-xfer},
592 @command{nncp-daemon}, @command{nncp-call(er)}.
595 @command{nncp-call} has ability only to list packets on remote node,
596 without their transmission.
599 @command{nncp-call} has ability to transfer only specified packets.
602 Workability of @option{xxrate} preference in @option{calls}
603 configuration file section.
606 Dependant libraries are updated.
612 Begin using of @code{go.mod} subsystem.
619 @item @command{nncp-daemon} can be run as @command{inetd}-service.
627 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
628 if @file{.seen} exists and treat it like file was already downloaded.
629 Possibly it was transferred out-of-bound and remote side needs to be
633 If higher priority packet is spooled, then @command{nncp-daemon} will
634 queue its sending first, interrupting lower priority transmissions.
637 Simple packet rate limiter added to online-related tools
638 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
641 Ability to specify niceness with symbolic notation:
642 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
645 Changed default niceness levels:
646 for @command{nncp-exec} from 64 to 96,
647 for @command{nncp-freq} from 64 to 160,
648 for @command{nncp-file} from 196 to 224.
656 @strong{Incompatible} @emph{bundle} archive format changes and
657 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
658 valid tar archives, but Go 1.9 made them invalid because of long paths
659 inside. NNCP accidentally was dependant on that bug. Explicit adding of
660 @file{NNCP/} directory in archive restores workability with valid tar
668 Ability to disable relaying at all using @verb{|-via -|} command line option.
676 @strong{Incompatible} plain packet format changes. Older versions are
680 Ability to queue remote command execution, by configuring @option{exec}
681 option in configuration file and using @command{nncp-exec} command:
684 @command{nncp-mail} command is replaced with more flexible
685 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
686 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
688 @option{sendmail} configuration file option is replaced with
689 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
690 @verb{|exec: sendmail: [...]|}.
694 Ability to override @option{via} configuration option for destination
695 node via @option{-via} command line option for following commands:
696 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
699 Chunked files, having size less than specified chunk size, will be sent
700 as an ordinary single file.
703 Exec commands are invoked with additional @env{NNCP_NICE} and
704 @env{NNCP_SELF} environment variables.
707 Files, that are sent as a reply to freq, have niceness level taken from
708 the freq packet. You can set desired niceness during @command{nncp-freq}
709 invocation using @option{-replynice} option.
712 @command{nncp-toss} command can ignore specified packet types during
713 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
717 @command{nncp-file} command uses
718 @option{FreqMinSize}/@option{FreqChunked} configuration file options
719 for @option{-minsize}/@option{-chunked} by default. You can turn this
720 off by specifying zero value.
729 @strong{Incompatible} encrypted/eblob packet format changes. Older
730 versions are not supported.
733 Twofish encryption algorithm is replaced with ChaCha20. It is much more
734 faster. One cryptographic primitive less.
737 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
738 another cryptographic primitive less (assuming that BLAKE2X is nearly
739 identical to BLAKE2).
748 @strong{Incompatible} encrypted packet format changes. Older versions
752 @command{nncp-bundle} command can either create stream of encrypted
753 packets, or digest it. It is useful when dealing with
754 @code{stdin}/@code{stdout} based transmission methods (like writing to
755 CD-ROM without intermediate prepared ISO image and working with tape
759 @command{nncp-toss} is able to create @file{.seen} files preventing
760 duplicate packets receiving.
763 Single background checksum verifier worker is allowed in
764 @command{nncp-call}. This is helpful when thousands of small inbound
765 packets could create many goroutines.
768 Ability to override path to spool directory and logfile through either
769 command line argument, or environment variable.
772 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
773 @file{.part}, @file{.lock} and temporary files.
778 @section Release 0.12
780 @item Sendmail command is called with @env{NNCP_SENDER} environment variable.
784 @section Release 0.11
786 @item @command{nncp-stat}'s command output is sorted by node name.
790 @section Release 0.10
793 @command{nncp-freq}'s @file{DST} argument is optional now. Last
794 @file{SRC} path's element will be used by default.
801 Fix @option{-rx}/@option{-tx} arguments processing in
802 @command{nncp-call} command. They were ignored.
809 Little bugfix in @command{nncp-file} command, where @option{-minsize}
810 option for unchunked transfer was not in KiBs, but in bytes.
818 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
819 encrypted temporary file for that.
822 Chunked files transmission appeared with corresponding
823 @command{nncp-reass} command and @option{freqchunked} configuration file
824 entry. Useful for transferring big files over small storage devices.
827 @option{freqminsize} configuration file option, analogue to
828 @option{-minsize} one.
831 @command{nncp-xfer}'s @option{-force} option is renamed to
832 @option{-mkdir} for clarity.
835 @option{-minsize} option is specified in KiBs, not bytes, for
839 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
840 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
841 common prefix and are grouped together for convenience.
844 @command{nncp-cfgenc} command appeared, allowing configuration file
845 encryption/decryption, for keeping it safe without any either OpenPGP or
849 Cryptographic libraries (dependencies) are updated.
856 @item Small @command{nncp-rm} command appeared.
857 @item Cryptographic libraries (dependencies) are updated.
864 Trivial small fix in default niceness level of @command{nncp-file}
865 and @command{nncp-freq} commands.
873 Small fix in @command{nncp-call}, @command{nncp-caller},
874 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
878 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
879 and more convenient to use.
882 @command{nncp-mincfg} command appeared: helper allowing to create
883 minimalistic stripped down configuration file without private keys, that
884 is useful during @command{nncp-xfer} usage.
891 @item Fixed compatibility with Go 1.6.
899 @strong{Incompatible} packet's format change (magic number is changed
900 too): size field is encrypted and is not send in plaintext anymore.
903 @option{-minsize} option gives ability to automatically pad outgoing
904 packets to specified minimal size.
907 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
908 always check new @emph{tx} packets appearance in the background while
909 connected. Remote side is immediately notified.
912 @option{-onlinedeadline} option gives ability to configure timeout of
913 inactivity of online connection, when it could be disconnected. It could
914 be used to keep connection alive for a long time.
917 @option{-maxonlinetime} option gives ability to set maximal allowable
918 online connection aliveness time.
921 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
924 @command{nncp-pkt} command can decompress the data.