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.
20 @section Release 7.1.1
24 Fixed failing directories fsync after @file{.seen} file creation.
29 @section Release 7.1.0
33 Multicasting areas feature appeared. Implemented merely by an additional
34 plain packet type with @command{nncp-toss}, @command{nncp-file} and
35 @command{nncp-exec} commands modification.
38 Fixed workability of @command{nncp-file} and @command{nncp-exec}
39 commands, that use temporary file (stdin and @option{-use-tmp}).
42 Fixed disappearing bad return code in @command{nncp-exec} command.
45 Fixed invalid @file{.hdr} generation when transitional packets are used.
48 @option{-all} option appeared in @command{nncp-rm} command, applying to
49 all the nodes at once.
52 @option{-cycle} option appeared in @command{nncp-check} command, looping
53 the check in infinite cycle.
56 @command{nncp-rm} command can take node alias name.
59 @command{nncp-pkt} can parse @file{.hdr} files.
64 @section Release 7.0.0
68 Minimal required Go version 1.13.
71 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
72 Because of that, there are backward @strong{incompatible} changes of
73 encrypted files (everything laying in the spool directory) and
74 @file{.meta} files of chunked transfer.
76 Current implementation is far from being optimal: it lacks
77 parallelizable calculations and has higher memory consumption: nearly
78 512 KiB for each 1 GiB of file's data. Future performance and memory
79 size optimizations should not lead to packet's format change. But it is
80 still several times faster than BLAKE2b.
83 Resumed online downloads, because of MTH, require reading only of the
84 preceding part of file, not the whole one as was before.
87 @command{nncp-hash} utility appeared for calculating file's MTH hash.
90 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
91 packets. Lowering number of used primitives. Also, its encrypted
92 packet's header is used as an associated data during encryption.
95 MultiCast Discovery uses
96 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
99 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
102 @command{nncp-stat} reports about partly downloaded packets.
105 Updated dependencies.
110 @section Release 6.6.0
114 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
115 commands wait for all background checksummers completion after
116 connection is finished.
119 Added possibility of address determining through multicast announcement
120 in local area network, so called MCD (MultiCast Discovery).
125 @section Release 6.5.0
129 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
132 Fixed possible bad return code ignoring in automatic tosser.
135 Fixed race during file descriptors closing when online protocol call is
136 finished, that could lead to write error of received packet fragment.
139 Kill all packet transmission progress bars in @command{nncp-daemon},
140 @command{nncp-call} and @command{nncp-caller} when call is finished.
145 @section Release 6.4.0
149 Fixed possible race in online protocol, that lead to panic.
154 @section Release 6.3.0
158 Fixed possible panic while showing progress during online protocol.
163 @section Release 6.2.1
167 Three places in logs contained excess @code{%s}.
172 @section Release 6.2.0
176 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
179 Yet another logging refactoring and simplification.
180 Should be no visible differences to the end user.
185 @section Release 6.1.0
189 Optimization: most commands do not keep opened file descriptors now.
190 Previously you can exceed maximal number of opened files if you have got
191 many packets in the spool directory.
194 Optimization: do not close file descriptor of the file we download
195 online. Previously each chunk lead to expensive open/close calls.
198 Online downloaded files are saved with @file{.nock} (non-checksummed)
199 suffix, waiting either for @command{nncp-check}, or online daemons to
200 perform integrity check.
203 Optimization: files, that are not resumed, are checksummed immediately
204 during the online download, skipping @file{.nock}-intermediate step.
207 Ability to store encrypted packet's header in @file{.hdr} file, close to
208 the packet itself. That can greatly increase performance of packets
209 listing on filesystems with big block's size.
214 @section Release 6.0.0
218 Log uses human readable and easy machine parseable
219 @url{https://www.gnu.org/software/recutils/, recfile} format for the
220 records, instead of structured RFC 3339 lines. Old logs are not readable
221 by @command{nncp-log} anymore.
224 @option{-autotoss*} option workability with @command{nncp-daemon}'s
225 @option{-inetd} mode.
228 Call's @option{when-tx-exists} allows to make a call only when outbound
229 packets exists. Combined with seconds-aware cron expression that can be
230 used as some kind of auto dialler.
233 @command{nncp-cronexpr} command allows you to check validity and
234 expectations of specified cron expression.
239 @section Release 5.6.0
243 @option{-autotoss*} option runs tosser not after the call, but every
244 second while it is active.
247 @option{autotoss}, @option{autotoss-doseen},
248 @option{autotoss-nofile}, @option{autotoss-nofreq},
249 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
250 @option{calls} configuration section. You can configure per-call
251 automatic tosser options.
254 Use vendoring, instead of @env{GOPATH} overriding during tarball
255 installation, because current minimal Go's version is 1.12 and it
261 @section Release 5.5.1
265 Respect for @env{BINDIR}, @env{INFODIR} and @env{DOCDIR} environment
266 variables in @file{config} during installation.
271 @section Release 5.5.0
275 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
276 @command{nncp-bundle} and @command{nncp-stat}.
279 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
282 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
283 options now. Uncompressed packets are not compatible with previous NNCP
287 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
288 have @option{-autotoss*} options for running tosser after call is ended.
291 Updated dependencies. Minimal required Go version is 1.12.
296 @section Release 5.4.1
300 Fixed @code{SENDMAIL} variable usage during the build.
305 @section Release 5.4.0
309 Updated dependencies.
312 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
313 This should not influence package maintainers, because minimal @command{redo}
314 implementation is included in tarball.
319 @section Release 5.3.3
323 More various error checks.
326 Updated dependencies.
331 @section Release 5.3.2
335 Fixed incorrect logic of @option{onlinedeadline} timeout, where
336 connection won't take into account incoming packets events and will
337 forcefully disconnect.
342 @section Release 5.3.1
346 Fixed @option{onlinedeadline} workability with call addresses that use
347 external commands (@verb{#"|somecmd"#}).
350 @command{nncp-stat} has @option{-pkt} option displaying information
351 about each packet in the spool.
356 @section Release 5.3.0
360 Progress messages contain prefix, describing the running action.
363 Fixed not occurring handshake messages padding.
366 Finish all SP protocol related goroutines, less memory leak.
369 SP protocol generates less socket write calls, thus generating less TCP
373 Check @option{onlinedeadline} and @option{maxonlinetime} options every
374 second, independently from socket reads (up to 10 seconds).
377 Once per minute, if no other traffic exists, PING packets are sent in
378 SP-connection. That allows faster determining of connection unworkability.
381 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
386 @section Release 5.2.1
390 Fixed SP protocol error handling, sometimes causing program panic.
395 @section Release 5.2.0
399 Most commands by default show oneline operations progress.
400 @option{-progress}, @option{-noprogress} command line options,
401 @option{noprogress} configuration file option appeared.
404 Fixed incorrect @command{nncp-check} command return code, that returned
405 bad code when everything is good.
408 Free disk space check during @command{nncp-bundle -rx} call.
413 @section Release 5.1.2
417 @strong{Critical} vulnerability: remote peers authentication could lead
418 to incorrect identification of remote side, allowing foreign encrypted
422 Bugfix: private and public Noise keys were swapped in newly created
423 configuration files, that lead to inability to authenticate online peers.
426 Explicit directories fsync-ing for guaranteed files renaming.
431 @section Release 5.1.1
435 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
440 @section Release 5.1.0
444 @command{nncp-file} can send directories, automatically creating pax
448 Free disk space is checked during outbound packets creation.
451 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
452 file options replaced with the structure:
453 @option{freq: @{path: ..., minsize: ..., chunked: ...@}}.
456 Added @option{freq.maxsize} configuration file option, forbidding of
457 freq sending larger than specified size.
460 Ability to notify about successfully executed commands (exec) with
461 @option{notify.exec} configuration file option.
466 @section Release 5.0.0
470 @strong{Incompatible} configuration file format change: YAML is
471 replaced with Hjson, due to its simplicity, without noticeable lack
472 of either functionality or convenience.
475 @strong{Incompatible} plain packet format changes. Older versions are
476 not supported. @code{zlib} compression is replaced with
477 @code{Zstandard}, due to its speed and efficiency, despite library
478 version is not mature enough.
481 Ability to call remote nodes via pipe call of external command, not only
485 @command{nncp-cfgnew} generates configuration file with many
486 comments. @option{-nocomments} option can be used for an old
490 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
491 avoid possible collisions with @file{.nncp.chunkCTR}.
494 Ability to override process umask through configuration file option.
497 Files and directories are created with 666/777 permissions by default,
498 allowing control with @command{umask}.
501 Updated dependencies.
504 Full usage of go modules for dependencies management
505 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
508 Forbid any later GNU GPL version autousage
509 (project's licence now is GNU GPLv3-only).
516 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
524 @strong{Incompatible} encrypted and eblob packet format change: AEAD
525 encryption mode with 128 KiB blocks is used now, because previously
526 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
527 decrypted data to external command. Older versions are not supported.
530 Available free space checking before copying in @command{nncp-xfer},
531 @command{nncp-daemon}, @command{nncp-call(er)}.
534 @command{nncp-call} has ability only to list packets on remote node,
535 without their transmission.
538 @command{nncp-call} has ability to transfer only specified packets.
541 Workability of @option{xxrate} preference in @option{calls}
542 configuration file section.
545 Dependant libraries are updated.
551 Begin using of @code{go.mod} subsystem.
558 @item @command{nncp-daemon} can be run as @command{inetd}-service.
566 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
567 if @file{.seen} exists and treat it like file was already downloaded.
568 Possibly it was transferred out-of-bound and remote side needs to be
572 If higher priority packet is spooled, then @command{nncp-daemon} will
573 queue its sending first, interrupting lower priority transmissions.
576 Simple packet rate limiter added to online-related tools
577 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
580 Ability to specify niceness with symbolic notation:
581 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
584 Changed default niceness levels:
585 for @command{nncp-exec} from 64 to 96,
586 for @command{nncp-freq} from 64 to 160,
587 for @command{nncp-file} from 196 to 224.
595 @strong{Incompatible} @emph{bundle} archive format changes and
596 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
597 valid tar archives, but Go 1.9 made them invalid because of long paths
598 inside. NNCP accidentally was dependant on that bug. Explicit adding of
599 @file{NNCP/} directory in archive restores workability with valid tar
607 Ability to disable relaying at all using @verb{|-via -|} command line option.
615 @strong{Incompatible} plain packet format changes. Older versions are
619 Ability to queue remote command execution, by configuring @option{exec}
620 option in configuration file and using @command{nncp-exec} command:
623 @command{nncp-mail} command is replaced with more flexible
624 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
625 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
627 @option{sendmail} configuration file option is replaced with
628 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
629 @verb{|exec: sendmail: [...]|}.
633 Ability to override @option{via} configuration option for destination
634 node via @option{-via} command line option for following commands:
635 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
638 Chunked files, having size less than specified chunk size, will be sent
639 as an ordinary single file.
642 Exec commands are invoked with additional @env{NNCP_NICE} and
643 @env{NNCP_SELF} environment variables.
646 Files, that are sent as a reply to freq, have niceness level taken from
647 the freq packet. You can set desired niceness during @command{nncp-freq}
648 invocation using @option{-replynice} option.
651 @command{nncp-toss} command can ignore specified packet types during
652 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
656 @command{nncp-file} command uses
657 @option{FreqMinSize}/@option{FreqChunked} configuration file options
658 for @option{-minsize}/@option{-chunked} by default. You can turn this
659 off by specifying zero value.
668 @strong{Incompatible} encrypted/eblob packet format changes. Older
669 versions are not supported.
672 Twofish encryption algorithm is replaced with ChaCha20. It is much more
673 faster. One cryptographic primitive less.
676 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
677 another cryptographic primitive less (assuming that BLAKE2X is nearly
678 identical to BLAKE2).
687 @strong{Incompatible} encrypted packet format changes. Older versions
691 @command{nncp-bundle} command can either create stream of encrypted
692 packets, or digest it. It is useful when dealing with
693 @code{stdin}/@code{stdout} based transmission methods (like writing to
694 CD-ROM without intermediate prepared ISO image and working with tape
698 @command{nncp-toss} is able to create @file{.seen} files preventing
699 duplicate packets receiving.
702 Single background checksum verifier worker is allowed in
703 @command{nncp-call}. This is helpful when thousands of small inbound
704 packets could create many goroutines.
707 Ability to override path to spool directory and logfile through either
708 command line argument, or environment variable.
711 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
712 @file{.part}, @file{.lock} and temporary files.
717 @section Release 0.12
719 @item Sendmail command is called with @env{NNCP_SENDER} environment variable.
723 @section Release 0.11
725 @item @command{nncp-stat}'s command output is sorted by node name.
729 @section Release 0.10
732 @command{nncp-freq}'s @file{DST} argument is optional now. Last
733 @file{SRC} path's element will be used by default.
740 Fix @option{-rx}/@option{-tx} arguments processing in
741 @command{nncp-call} command. They were ignored.
748 Little bugfix in @command{nncp-file} command, where @option{-minsize}
749 option for unchunked transfer was not in KiBs, but in bytes.
757 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
758 encrypted temporary file for that.
761 Chunked files transmission appeared with corresponding
762 @command{nncp-reass} command and @option{freqchunked} configuration file
763 entry. Useful for transferring big files over small storage devices.
766 @option{freqminsize} configuration file option, analogue to
767 @option{-minsize} one.
770 @command{nncp-xfer}'s @option{-force} option is renamed to
771 @option{-mkdir} for clarity.
774 @option{-minsize} option is specified in KiBs, not bytes, for
778 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
779 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
780 common prefix and are grouped together for convenience.
783 @command{nncp-cfgenc} command appeared, allowing configuration file
784 encryption/decryption, for keeping it safe without any either OpenPGP or
788 Cryptographic libraries (dependencies) are updated.
795 @item Small @command{nncp-rm} command appeared.
796 @item Cryptographic libraries (dependencies) are updated.
803 Trivial small fix in default niceness level of @command{nncp-file}
804 and @command{nncp-freq} commands.
812 Small fix in @command{nncp-call}, @command{nncp-caller},
813 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
817 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
818 and more convenient to use.
821 @command{nncp-mincfg} command appeared: helper allowing to create
822 minimalistic stripped down configuration file without private keys, that
823 is useful during @command{nncp-xfer} usage.
830 @item Fixed compatibility with Go 1.6.
838 @strong{Incompatible} packet's format change (magic number is changed
839 too): size field is encrypted and is not send in plaintext anymore.
842 @option{-minsize} option gives ability to automatically pad outgoing
843 packets to specified minimal size.
846 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
847 always check new @emph{tx} packets appearance in the background while
848 connected. Remote side is immediately notified.
851 @option{-onlinedeadline} option gives ability to configure timeout of
852 inactivity of online connection, when it could be disconnected. It could
853 be used to keep connection alive for a long time.
856 @option{-maxonlinetime} option gives ability to set maximal allowable
857 online connection aliveness time.
860 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
863 @command{nncp-pkt} command can decompress the data.