4 See also this page @ref{Новости, on russian}.
11 @command{nncp-trns} command appeared for manual transition packets creation.
14 If destination node of transitional packet has non empty @option{via}
15 route, then do not ignore, but use it.
18 Do not relay multicast packet to area message's originator, that
19 obviously has seen its own packet.
24 @section Release 7.1.1
28 Fixed failing directories fsync after @file{.seen} file creation.
33 @section Release 7.1.0
37 Multicasting areas feature appeared. Implemented merely by an additional
38 plain packet type with @command{nncp-toss}, @command{nncp-file} and
39 @command{nncp-exec} commands modification.
42 Fixed workability of @command{nncp-file} and @command{nncp-exec}
43 commands, that use temporary file (stdin and @option{-use-tmp}).
46 Fixed disappearing bad return code in @command{nncp-exec} command.
49 Fixed invalid @file{.hdr} generation when transitional packets are used.
52 @option{-all} option appeared in @command{nncp-rm} command, applying to
53 all the nodes at once.
56 @option{-cycle} option appeared in @command{nncp-check} command, looping
57 the check in infinite cycle.
60 @command{nncp-rm} command can take node alias name.
63 @command{nncp-pkt} can parse @file{.hdr} files.
68 @section Release 7.0.0
72 Minimal required Go version 1.13.
75 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
76 Because of that, there are backward @strong{incompatible} changes of
77 encrypted files (everything laying in the spool directory) and
78 @file{.meta} files of chunked transfer.
80 Current implementation is far from being optimal: it lacks
81 parallelizable calculations and has higher memory consumption: nearly
82 512 KiB for each 1 GiB of file's data. Future performance and memory
83 size optimizations should not lead to packet's format change. But it is
84 still several times faster than BLAKE2b.
87 Resumed online downloads, because of MTH, require reading only of the
88 preceding part of file, not the whole one as was before.
91 @command{nncp-hash} utility appeared for calculating file's MTH hash.
94 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
95 packets. Lowering number of used primitives. Also, its encrypted
96 packet's header is used as an associated data during encryption.
99 MultiCast Discovery uses
100 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
103 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
106 @command{nncp-stat} reports about partly downloaded packets.
109 Updated dependencies.
114 @section Release 6.6.0
118 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
119 commands wait for all background checksummers completion after
120 connection is finished.
123 Added possibility of address determining through multicast announcement
124 in local area network, so called MCD (MultiCast Discovery).
129 @section Release 6.5.0
133 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
136 Fixed possible bad return code ignoring in automatic tosser.
139 Fixed race during file descriptors closing when online protocol call is
140 finished, that could lead to write error of received packet fragment.
143 Kill all packet transmission progress bars in @command{nncp-daemon},
144 @command{nncp-call} and @command{nncp-caller} when call is finished.
149 @section Release 6.4.0
153 Fixed possible race in online protocol, that lead to panic.
158 @section Release 6.3.0
162 Fixed possible panic while showing progress during online protocol.
167 @section Release 6.2.1
171 Three places in logs contained excess @code{%s}.
176 @section Release 6.2.0
180 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
183 Yet another logging refactoring and simplification.
184 Should be no visible differences to the end user.
189 @section Release 6.1.0
193 Optimization: most commands do not keep opened file descriptors now.
194 Previously you can exceed maximal number of opened files if you have got
195 many packets in the spool directory.
198 Optimization: do not close file descriptor of the file we download
199 online. Previously each chunk lead to expensive open/close calls.
202 Online downloaded files are saved with @file{.nock} (non-checksummed)
203 suffix, waiting either for @command{nncp-check}, or online daemons to
204 perform integrity check.
207 Optimization: files, that are not resumed, are checksummed immediately
208 during the online download, skipping @file{.nock}-intermediate step.
211 Ability to store encrypted packet's header in @file{.hdr} file, close to
212 the packet itself. That can greatly increase performance of packets
213 listing on filesystems with big block's size.
218 @section Release 6.0.0
222 Log uses human readable and easy machine parseable
223 @url{https://www.gnu.org/software/recutils/, recfile} format for the
224 records, instead of structured RFC 3339 lines. Old logs are not readable
225 by @command{nncp-log} anymore.
228 @option{-autotoss*} option workability with @command{nncp-daemon}'s
229 @option{-inetd} mode.
232 Call's @option{when-tx-exists} allows to make a call only when outbound
233 packets exists. Combined with seconds-aware cron expression that can be
234 used as some kind of auto dialler.
237 @command{nncp-cronexpr} command allows you to check validity and
238 expectations of specified cron expression.
243 @section Release 5.6.0
247 @option{-autotoss*} option runs tosser not after the call, but every
248 second while it is active.
251 @option{autotoss}, @option{autotoss-doseen},
252 @option{autotoss-nofile}, @option{autotoss-nofreq},
253 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
254 @option{calls} configuration section. You can configure per-call
255 automatic tosser options.
258 Use vendoring, instead of @env{GOPATH} overriding during tarball
259 installation, because current minimal Go's version is 1.12 and it
265 @section Release 5.5.1
269 Respect for @env{BINDIR}, @env{INFODIR} and @env{DOCDIR} environment
270 variables in @file{config} during installation.
275 @section Release 5.5.0
279 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
280 @command{nncp-bundle} and @command{nncp-stat}.
283 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
286 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
287 options now. Uncompressed packets are not compatible with previous NNCP
291 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
292 have @option{-autotoss*} options for running tosser after call is ended.
295 Updated dependencies. Minimal required Go version is 1.12.
300 @section Release 5.4.1
304 Fixed @code{SENDMAIL} variable usage during the build.
309 @section Release 5.4.0
313 Updated dependencies.
316 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
317 This should not influence package maintainers, because minimal @command{redo}
318 implementation is included in tarball.
323 @section Release 5.3.3
327 More various error checks.
330 Updated dependencies.
335 @section Release 5.3.2
339 Fixed incorrect logic of @option{onlinedeadline} timeout, where
340 connection won't take into account incoming packets events and will
341 forcefully disconnect.
346 @section Release 5.3.1
350 Fixed @option{onlinedeadline} workability with call addresses that use
351 external commands (@verb{#"|somecmd"#}).
354 @command{nncp-stat} has @option{-pkt} option displaying information
355 about each packet in the spool.
360 @section Release 5.3.0
364 Progress messages contain prefix, describing the running action.
367 Fixed not occurring handshake messages padding.
370 Finish all SP protocol related goroutines, less memory leak.
373 SP protocol generates less socket write calls, thus generating less TCP
377 Check @option{onlinedeadline} and @option{maxonlinetime} options every
378 second, independently from socket reads (up to 10 seconds).
381 Once per minute, if no other traffic exists, PING packets are sent in
382 SP-connection. That allows faster determining of connection unworkability.
385 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
390 @section Release 5.2.1
394 Fixed SP protocol error handling, sometimes causing program panic.
399 @section Release 5.2.0
403 Most commands by default show oneline operations progress.
404 @option{-progress}, @option{-noprogress} command line options,
405 @option{noprogress} configuration file option appeared.
408 Fixed incorrect @command{nncp-check} command return code, that returned
409 bad code when everything is good.
412 Free disk space check during @command{nncp-bundle -rx} call.
417 @section Release 5.1.2
421 @strong{Critical} vulnerability: remote peers authentication could lead
422 to incorrect identification of remote side, allowing foreign encrypted
426 Bugfix: private and public Noise keys were swapped in newly created
427 configuration files, that lead to inability to authenticate online peers.
430 Explicit directories fsync-ing for guaranteed files renaming.
435 @section Release 5.1.1
439 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
444 @section Release 5.1.0
448 @command{nncp-file} can send directories, automatically creating pax
452 Free disk space is checked during outbound packets creation.
455 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
456 file options replaced with the structure:
457 @option{freq: @{path: ..., minsize: ..., chunked: ...@}}.
460 Added @option{freq.maxsize} configuration file option, forbidding of
461 freq sending larger than specified size.
464 Ability to notify about successfully executed commands (exec) with
465 @option{notify.exec} configuration file option.
470 @section Release 5.0.0
474 @strong{Incompatible} configuration file format change: YAML is
475 replaced with Hjson, due to its simplicity, without noticeable lack
476 of either functionality or convenience.
479 @strong{Incompatible} plain packet format changes. Older versions are
480 not supported. @code{zlib} compression is replaced with
481 @code{Zstandard}, due to its speed and efficiency, despite library
482 version is not mature enough.
485 Ability to call remote nodes via pipe call of external command, not only
489 @command{nncp-cfgnew} generates configuration file with many
490 comments. @option{-nocomments} option can be used for an old
494 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
495 avoid possible collisions with @file{.nncp.chunkCTR}.
498 Ability to override process umask through configuration file option.
501 Files and directories are created with 666/777 permissions by default,
502 allowing control with @command{umask}.
505 Updated dependencies.
508 Full usage of go modules for dependencies management
509 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
512 Forbid any later GNU GPL version autousage
513 (project's licence now is GNU GPLv3-only).
520 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
528 @strong{Incompatible} encrypted and eblob packet format change: AEAD
529 encryption mode with 128 KiB blocks is used now, because previously
530 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
531 decrypted data to external command. Older versions are not supported.
534 Available free space checking before copying in @command{nncp-xfer},
535 @command{nncp-daemon}, @command{nncp-call(er)}.
538 @command{nncp-call} has ability only to list packets on remote node,
539 without their transmission.
542 @command{nncp-call} has ability to transfer only specified packets.
545 Workability of @option{xxrate} preference in @option{calls}
546 configuration file section.
549 Dependant libraries are updated.
555 Begin using of @code{go.mod} subsystem.
562 @item @command{nncp-daemon} can be run as @command{inetd}-service.
570 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
571 if @file{.seen} exists and treat it like file was already downloaded.
572 Possibly it was transferred out-of-bound and remote side needs to be
576 If higher priority packet is spooled, then @command{nncp-daemon} will
577 queue its sending first, interrupting lower priority transmissions.
580 Simple packet rate limiter added to online-related tools
581 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
584 Ability to specify niceness with symbolic notation:
585 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
588 Changed default niceness levels:
589 for @command{nncp-exec} from 64 to 96,
590 for @command{nncp-freq} from 64 to 160,
591 for @command{nncp-file} from 196 to 224.
599 @strong{Incompatible} @emph{bundle} archive format changes and
600 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
601 valid tar archives, but Go 1.9 made them invalid because of long paths
602 inside. NNCP accidentally was dependant on that bug. Explicit adding of
603 @file{NNCP/} directory in archive restores workability with valid tar
611 Ability to disable relaying at all using @verb{|-via -|} command line option.
619 @strong{Incompatible} plain packet format changes. Older versions are
623 Ability to queue remote command execution, by configuring @option{exec}
624 option in configuration file and using @command{nncp-exec} command:
627 @command{nncp-mail} command is replaced with more flexible
628 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
629 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
631 @option{sendmail} configuration file option is replaced with
632 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
633 @verb{|exec: sendmail: [...]|}.
637 Ability to override @option{via} configuration option for destination
638 node via @option{-via} command line option for following commands:
639 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
642 Chunked files, having size less than specified chunk size, will be sent
643 as an ordinary single file.
646 Exec commands are invoked with additional @env{NNCP_NICE} and
647 @env{NNCP_SELF} environment variables.
650 Files, that are sent as a reply to freq, have niceness level taken from
651 the freq packet. You can set desired niceness during @command{nncp-freq}
652 invocation using @option{-replynice} option.
655 @command{nncp-toss} command can ignore specified packet types during
656 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
660 @command{nncp-file} command uses
661 @option{FreqMinSize}/@option{FreqChunked} configuration file options
662 for @option{-minsize}/@option{-chunked} by default. You can turn this
663 off by specifying zero value.
672 @strong{Incompatible} encrypted/eblob packet format changes. Older
673 versions are not supported.
676 Twofish encryption algorithm is replaced with ChaCha20. It is much more
677 faster. One cryptographic primitive less.
680 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
681 another cryptographic primitive less (assuming that BLAKE2X is nearly
682 identical to BLAKE2).
691 @strong{Incompatible} encrypted packet format changes. Older versions
695 @command{nncp-bundle} command can either create stream of encrypted
696 packets, or digest it. It is useful when dealing with
697 @code{stdin}/@code{stdout} based transmission methods (like writing to
698 CD-ROM without intermediate prepared ISO image and working with tape
702 @command{nncp-toss} is able to create @file{.seen} files preventing
703 duplicate packets receiving.
706 Single background checksum verifier worker is allowed in
707 @command{nncp-call}. This is helpful when thousands of small inbound
708 packets could create many goroutines.
711 Ability to override path to spool directory and logfile through either
712 command line argument, or environment variable.
715 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
716 @file{.part}, @file{.lock} and temporary files.
721 @section Release 0.12
723 @item Sendmail command is called with @env{NNCP_SENDER} environment variable.
727 @section Release 0.11
729 @item @command{nncp-stat}'s command output is sorted by node name.
733 @section Release 0.10
736 @command{nncp-freq}'s @file{DST} argument is optional now. Last
737 @file{SRC} path's element will be used by default.
744 Fix @option{-rx}/@option{-tx} arguments processing in
745 @command{nncp-call} command. They were ignored.
752 Little bugfix in @command{nncp-file} command, where @option{-minsize}
753 option for unchunked transfer was not in KiBs, but in bytes.
761 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
762 encrypted temporary file for that.
765 Chunked files transmission appeared with corresponding
766 @command{nncp-reass} command and @option{freqchunked} configuration file
767 entry. Useful for transferring big files over small storage devices.
770 @option{freqminsize} configuration file option, analogue to
771 @option{-minsize} one.
774 @command{nncp-xfer}'s @option{-force} option is renamed to
775 @option{-mkdir} for clarity.
778 @option{-minsize} option is specified in KiBs, not bytes, for
782 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
783 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
784 common prefix and are grouped together for convenience.
787 @command{nncp-cfgenc} command appeared, allowing configuration file
788 encryption/decryption, for keeping it safe without any either OpenPGP or
792 Cryptographic libraries (dependencies) are updated.
799 @item Small @command{nncp-rm} command appeared.
800 @item Cryptographic libraries (dependencies) are updated.
807 Trivial small fix in default niceness level of @command{nncp-file}
808 and @command{nncp-freq} commands.
816 Small fix in @command{nncp-call}, @command{nncp-caller},
817 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
821 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
822 and more convenient to use.
825 @command{nncp-mincfg} command appeared: helper allowing to create
826 minimalistic stripped down configuration file without private keys, that
827 is useful during @command{nncp-xfer} usage.
834 @item Fixed compatibility with Go 1.6.
842 @strong{Incompatible} packet's format change (magic number is changed
843 too): size field is encrypted and is not send in plaintext anymore.
846 @option{-minsize} option gives ability to automatically pad outgoing
847 packets to specified minimal size.
850 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
851 always check new @emph{tx} packets appearance in the background while
852 connected. Remote side is immediately notified.
855 @option{-onlinedeadline} option gives ability to configure timeout of
856 inactivity of online connection, when it could be disconnected. It could
857 be used to keep connection alive for a long time.
860 @option{-maxonlinetime} option gives ability to set maximal allowable
861 online connection aliveness time.
864 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
867 @command{nncp-pkt} command can decompress the data.