4 See also this page @ref{Новости, on russian}.
11 Multicasting areas feature appeared. Implemented merely by an additional
12 plain packet type with @command{nncp-toss}, @command{nncp-file} and
13 @command{nncp-exec} commands modification.
16 Fixed workability of @command{nncp-file} and @command{nncp-exec}
17 commands, that use temporary file (stdin and @option{-use-tmp}).
20 Fixed disappearing bad return code in @command{nncp-exec} command.
23 Fixed invalid @file{.hdr} generation when transitional packets are used.
26 @option{-all} option appeared in @command{nncp-rm} command, applying to
27 all the nodes at once.
30 @option{-cycle} option appeared in @command{nncp-check} command, looping
31 the check in infinite cycle.
34 @command{nncp-rm} command can take node alias name.
37 @command{nncp-pkt} can parse @file{.hdr} files.
42 @section Release 7.0.0
46 Minimal required Go version 1.13.
49 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
50 Because of that, there are backward @strong{incompatible} changes of
51 encrypted files (everything laying in the spool directory) and
52 @file{.meta} files of chunked transfer.
54 Current implementation is far from being optimal: it lacks
55 parallelizable calculations and has higher memory consumption: nearly
56 512 KiB for each 1 GiB of file's data. Future performance and memory
57 size optimizations should not lead to packet's format change. But it is
58 still several times faster than BLAKE2b.
61 Resumed online downloads, because of MTH, require reading only of the
62 preceding part of file, not the whole one as was before.
65 @command{nncp-hash} utility appeared for calculating file's MTH hash.
68 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
69 packets. Lowering number of used primitives. Also, its encrypted
70 packet's header is used as an associated data during encryption.
73 MultiCast Discovery uses
74 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
77 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
80 @command{nncp-stat} reports about partly downloaded packets.
88 @section Release 6.6.0
92 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
93 commands wait for all background checksummers completion after
94 connection is finished.
97 Added possibility of address determining through multicast announcement
98 in local area network, so called MCD (MultiCast Discovery).
103 @section Release 6.5.0
107 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
110 Fixed possible bad return code ignoring in automatic tosser.
113 Fixed race during file descriptors closing when online protocol call is
114 finished, that could lead to write error of received packet fragment.
117 Kill all packet transmission progress bars in @command{nncp-daemon},
118 @command{nncp-call} and @command{nncp-caller} when call is finished.
123 @section Release 6.4.0
127 Fixed possible race in online protocol, that lead to panic.
132 @section Release 6.3.0
136 Fixed possible panic while showing progress during online protocol.
141 @section Release 6.2.1
145 Three places in logs contained excess @code{%s}.
150 @section Release 6.2.0
154 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
157 Yet another logging refactoring and simplification.
158 Should be no visible differences to the end user.
163 @section Release 6.1.0
167 Optimization: most commands do not keep opened file descriptors now.
168 Previously you can exceed maximal number of opened files if you have got
169 many packets in the spool directory.
172 Optimization: do not close file descriptor of the file we download
173 online. Previously each chunk lead to expensive open/close calls.
176 Online downloaded files are saved with @file{.nock} (non-checksummed)
177 suffix, waiting either for @command{nncp-check}, or online daemons to
178 perform integrity check.
181 Optimization: files, that are not resumed, are checksummed immediately
182 during the online download, skipping @file{.nock}-intermediate step.
185 Ability to store encrypted packet's header in @file{.hdr} file, close to
186 the packet itself. That can greatly increase performance of packets
187 listing on filesystems with big block's size.
192 @section Release 6.0.0
196 Log uses human readable and easy machine parseable
197 @url{https://www.gnu.org/software/recutils/, recfile} format for the
198 records, instead of structured RFC 3339 lines. Old logs are not readable
199 by @command{nncp-log} anymore.
202 @option{-autotoss*} option workability with @command{nncp-daemon}'s
203 @option{-inetd} mode.
206 Call's @option{when-tx-exists} allows to make a call only when outbound
207 packets exists. Combined with seconds-aware cron expression that can be
208 used as some kind of auto dialler.
211 @command{nncp-cronexpr} command allows you to check validity and
212 expectations of specified cron expression.
217 @section Release 5.6.0
221 @option{-autotoss*} option runs tosser not after the call, but every
222 second while it is active.
225 @option{autotoss}, @option{autotoss-doseen},
226 @option{autotoss-nofile}, @option{autotoss-nofreq},
227 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
228 @option{calls} configuration section. You can configure per-call
229 automatic tosser options.
232 Use vendoring, instead of @env{GOPATH} overriding during tarball
233 installation, because current minimal Go's version is 1.12 and it
239 @section Release 5.5.1
243 Respect for @env{BINDIR}, @env{INFODIR} and @env{DOCDIR} environment
244 variables in @file{config} during installation.
249 @section Release 5.5.0
253 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
254 @command{nncp-bundle} and @command{nncp-stat}.
257 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
260 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
261 options now. Uncompressed packets are not compatible with previous NNCP
265 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
266 have @option{-autotoss*} options for running tosser after call is ended.
269 Updated dependencies. Minimal required Go version is 1.12.
274 @section Release 5.4.1
278 Fixed @code{SENDMAIL} variable usage during the build.
283 @section Release 5.4.0
287 Updated dependencies.
290 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
291 This should not influence package maintainers, because minimal @command{redo}
292 implementation is included in tarball.
297 @section Release 5.3.3
301 More various error checks.
304 Updated dependencies.
309 @section Release 5.3.2
313 Fixed incorrect logic of @option{onlinedeadline} timeout, where
314 connection won't take into account incoming packets events and will
315 forcefully disconnect.
320 @section Release 5.3.1
324 Fixed @option{onlinedeadline} workability with call addresses that use
325 external commands (@verb{#"|somecmd"#}).
328 @command{nncp-stat} has @option{-pkt} option displaying information
329 about each packet in the spool.
334 @section Release 5.3.0
338 Progress messages contain prefix, describing the running action.
341 Fixed not occurring handshake messages padding.
344 Finish all SP protocol related goroutines, less memory leak.
347 SP protocol generates less socket write calls, thus generating less TCP
351 Check @option{onlinedeadline} and @option{maxonlinetime} options every
352 second, independently from socket reads (up to 10 seconds).
355 Once per minute, if no other traffic exists, PING packets are sent in
356 SP-connection. That allows faster determining of connection unworkability.
359 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
364 @section Release 5.2.1
368 Fixed SP protocol error handling, sometimes causing program panic.
373 @section Release 5.2.0
377 Most commands by default show oneline operations progress.
378 @option{-progress}, @option{-noprogress} command line options,
379 @option{noprogress} configuration file option appeared.
382 Fixed incorrect @command{nncp-check} command return code, that returned
383 bad code when everything is good.
386 Free disk space check during @command{nncp-bundle -rx} call.
391 @section Release 5.1.2
395 @strong{Critical} vulnerability: remote peers authentication could lead
396 to incorrect identification of remote side, allowing foreign encrypted
400 Bugfix: private and public Noise keys were swapped in newly created
401 configuration files, that lead to inability to authenticate online peers.
404 Explicit directories fsync-ing for guaranteed files renaming.
409 @section Release 5.1.1
413 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
418 @section Release 5.1.0
422 @command{nncp-file} can send directories, automatically creating pax
426 Free disk space is checked during outbound packets creation.
429 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
430 file options replaced with the structure:
431 @option{freq: @{path: ..., minsize: ..., chunked: ...@}}.
434 Added @option{freq.maxsize} configuration file option, forbidding of
435 freq sending larger than specified size.
438 Ability to notify about successfully executed commands (exec) with
439 @option{notify.exec} configuration file option.
444 @section Release 5.0.0
448 @strong{Incompatible} configuration file format change: YAML is
449 replaced with Hjson, due to its simplicity, without noticeable lack
450 of either functionality or convenience.
453 @strong{Incompatible} plain packet format changes. Older versions are
454 not supported. @code{zlib} compression is replaced with
455 @code{Zstandard}, due to its speed and efficiency, despite library
456 version is not mature enough.
459 Ability to call remote nodes via pipe call of external command, not only
463 @command{nncp-cfgnew} generates configuration file with many
464 comments. @option{-nocomments} option can be used for an old
468 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
469 avoid possible collisions with @file{.nncp.chunkCTR}.
472 Ability to override process umask through configuration file option.
475 Files and directories are created with 666/777 permissions by default,
476 allowing control with @command{umask}.
479 Updated dependencies.
482 Full usage of go modules for dependencies management
483 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
486 Forbid any later GNU GPL version autousage
487 (project's licence now is GNU GPLv3-only).
494 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
502 @strong{Incompatible} encrypted and eblob packet format change: AEAD
503 encryption mode with 128 KiB blocks is used now, because previously
504 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
505 decrypted data to external command. Older versions are not supported.
508 Available free space checking before copying in @command{nncp-xfer},
509 @command{nncp-daemon}, @command{nncp-call(er)}.
512 @command{nncp-call} has ability only to list packets on remote node,
513 without their transmission.
516 @command{nncp-call} has ability to transfer only specified packets.
519 Workability of @option{xxrate} preference in @option{calls}
520 configuration file section.
523 Dependant libraries are updated.
529 Begin using of @code{go.mod} subsystem.
536 @item @command{nncp-daemon} can be run as @command{inetd}-service.
544 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
545 if @file{.seen} exists and treat it like file was already downloaded.
546 Possibly it was transferred out-of-bound and remote side needs to be
550 If higher priority packet is spooled, then @command{nncp-daemon} will
551 queue its sending first, interrupting lower priority transmissions.
554 Simple packet rate limiter added to online-related tools
555 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
558 Ability to specify niceness with symbolic notation:
559 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
562 Changed default niceness levels:
563 for @command{nncp-exec} from 64 to 96,
564 for @command{nncp-freq} from 64 to 160,
565 for @command{nncp-file} from 196 to 224.
573 @strong{Incompatible} @emph{bundle} archive format changes and
574 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
575 valid tar archives, but Go 1.9 made them invalid because of long paths
576 inside. NNCP accidentally was dependant on that bug. Explicit adding of
577 @file{NNCP/} directory in archive restores workability with valid tar
585 Ability to disable relaying at all using @verb{|-via -|} command line option.
593 @strong{Incompatible} plain packet format changes. Older versions are
597 Ability to queue remote command execution, by configuring @option{exec}
598 option in configuration file and using @command{nncp-exec} command:
601 @command{nncp-mail} command is replaced with more flexible
602 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
603 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
605 @option{sendmail} configuration file option is replaced with
606 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
607 @verb{|exec: sendmail: [...]|}.
611 Ability to override @option{via} configuration option for destination
612 node via @option{-via} command line option for following commands:
613 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
616 Chunked files, having size less than specified chunk size, will be sent
617 as an ordinary single file.
620 Exec commands are invoked with additional @env{NNCP_NICE} and
621 @env{NNCP_SELF} environment variables.
624 Files, that are sent as a reply to freq, have niceness level taken from
625 the freq packet. You can set desired niceness during @command{nncp-freq}
626 invocation using @option{-replynice} option.
629 @command{nncp-toss} command can ignore specified packet types during
630 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
634 @command{nncp-file} command uses
635 @option{FreqMinSize}/@option{FreqChunked} configuration file options
636 for @option{-minsize}/@option{-chunked} by default. You can turn this
637 off by specifying zero value.
646 @strong{Incompatible} encrypted/eblob packet format changes. Older
647 versions are not supported.
650 Twofish encryption algorithm is replaced with ChaCha20. It is much more
651 faster. One cryptographic primitive less.
654 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
655 another cryptographic primitive less (assuming that BLAKE2X is nearly
656 identical to BLAKE2).
665 @strong{Incompatible} encrypted packet format changes. Older versions
669 @command{nncp-bundle} command can either create stream of encrypted
670 packets, or digest it. It is useful when dealing with
671 @code{stdin}/@code{stdout} based transmission methods (like writing to
672 CD-ROM without intermediate prepared ISO image and working with tape
676 @command{nncp-toss} is able to create @file{.seen} files preventing
677 duplicate packets receiving.
680 Single background checksum verifier worker is allowed in
681 @command{nncp-call}. This is helpful when thousands of small inbound
682 packets could create many goroutines.
685 Ability to override path to spool directory and logfile through either
686 command line argument, or environment variable.
689 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
690 @file{.part}, @file{.lock} and temporary files.
695 @section Release 0.12
697 @item Sendmail command is called with @env{NNCP_SENDER} environment variable.
701 @section Release 0.11
703 @item @command{nncp-stat}'s command output is sorted by node name.
707 @section Release 0.10
710 @command{nncp-freq}'s @file{DST} argument is optional now. Last
711 @file{SRC} path's element will be used by default.
718 Fix @option{-rx}/@option{-tx} arguments processing in
719 @command{nncp-call} command. They were ignored.
726 Little bugfix in @command{nncp-file} command, where @option{-minsize}
727 option for unchunked transfer was not in KiBs, but in bytes.
735 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
736 encrypted temporary file for that.
739 Chunked files transmission appeared with corresponding
740 @command{nncp-reass} command and @option{freqchunked} configuration file
741 entry. Useful for transferring big files over small storage devices.
744 @option{freqminsize} configuration file option, analogue to
745 @option{-minsize} one.
748 @command{nncp-xfer}'s @option{-force} option is renamed to
749 @option{-mkdir} for clarity.
752 @option{-minsize} option is specified in KiBs, not bytes, for
756 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
757 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
758 common prefix and are grouped together for convenience.
761 @command{nncp-cfgenc} command appeared, allowing configuration file
762 encryption/decryption, for keeping it safe without any either OpenPGP or
766 Cryptographic libraries (dependencies) are updated.
773 @item Small @command{nncp-rm} command appeared.
774 @item Cryptographic libraries (dependencies) are updated.
781 Trivial small fix in default niceness level of @command{nncp-file}
782 and @command{nncp-freq} commands.
790 Small fix in @command{nncp-call}, @command{nncp-caller},
791 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
795 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
796 and more convenient to use.
799 @command{nncp-mincfg} command appeared: helper allowing to create
800 minimalistic stripped down configuration file without private keys, that
801 is useful during @command{nncp-xfer} usage.
808 @item Fixed compatibility with Go 1.6.
816 @strong{Incompatible} packet's format change (magic number is changed
817 too): size field is encrypted and is not send in plaintext anymore.
820 @option{-minsize} option gives ability to automatically pad outgoing
821 packets to specified minimal size.
824 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
825 always check new @emph{tx} packets appearance in the background while
826 connected. Remote side is immediately notified.
829 @option{-onlinedeadline} option gives ability to configure timeout of
830 inactivity of online connection, when it could be disconnected. It could
831 be used to keep connection alive for a long time.
834 @option{-maxonlinetime} option gives ability to set maximal allowable
835 online connection aliveness time.
838 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
841 @command{nncp-pkt} command can decompress the data.