4 See also this page @ref{Новости, on russian}.
11 Fixed invalid @file{.hdr} generation when transitional packets are used.
14 @option{-all} option appeared in @command{nncp-rm} command, applying to
15 all the nodes at once.
18 @command{nncp-pkt} can parse @file{.hdr} files.
21 Multicasting areas feature appeared. Implemented merely by an additional
22 plain packet type with @command{nncp-toss}, @command{nncp-file} and
23 @command{nncp-exec} commands modification.
28 @section Release 7.0.0
32 Minimal required Go version 1.13.
35 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
36 Because of that, there are backward @strong{incompatible} changes of
37 encrypted files (everything laying in the spool directory) and
38 @file{.meta} files of chunked transfer.
40 Current implementation is far from being optimal: it lacks
41 parallelizable calculations and has higher memory consumption: nearly
42 512 KiB for each 1 GiB of file's data. Future performance and memory
43 size optimizations should not lead to packet's format change. But it is
44 still several times faster than BLAKE2b.
47 Resumed online downloads, because of MTH, require reading only of the
48 preceding part of file, not the whole one as was before.
51 @command{nncp-hash} utility appeared for calculating file's MTH hash.
54 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
55 packets. Lowering number of used primitives. Also, its encrypted
56 packet's header is used as an associated data during encryption.
59 MultiCast Discovery uses
60 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
63 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
66 @command{nncp-stat} reports about partly downloaded packets.
74 @section Release 6.6.0
78 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
79 commands wait for all background checksummers completion after
80 connection is finished.
83 Added possibility of address determining through multicast announcement
84 in local area network, so called MCD (MultiCast Discovery).
89 @section Release 6.5.0
93 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
96 Fixed possible bad return code ignoring in automatic tosser.
99 Fixed race during file descriptors closing when online protocol call is
100 finished, that could lead to write error of received packet fragment.
103 Kill all packet transmission progress bars in @command{nncp-daemon},
104 @command{nncp-call} and @command{nncp-caller} when call is finished.
109 @section Release 6.4.0
113 Fixed possible race in online protocol, that lead to panic.
118 @section Release 6.3.0
122 Fixed possible panic while showing progress during online protocol.
127 @section Release 6.2.1
131 Three places in logs contained excess @code{%s}.
136 @section Release 6.2.0
140 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
143 Yet another logging refactoring and simplification.
144 Should be no visible differences to the end user.
149 @section Release 6.1.0
153 Optimization: most commands do not keep opened file descriptors now.
154 Previously you can exceed maximal number of opened files if you have got
155 many packets in the spool directory.
158 Optimization: do not close file descriptor of the file we download
159 online. Previously each chunk lead to expensive open/close calls.
162 Online downloaded files are saved with @file{.nock} (non-checksummed)
163 suffix, waiting either for @command{nncp-check}, or online daemons to
164 perform integrity check.
167 Optimization: files, that are not resumed, are checksummed immediately
168 during the online download, skipping @file{.nock}-intermediate step.
171 Ability to store encrypted packet's header in @file{.hdr} file, close to
172 the packet itself. That can greatly increase performance of packets
173 listing on filesystems with big block's size.
178 @section Release 6.0.0
182 Log uses human readable and easy machine parseable
183 @url{https://www.gnu.org/software/recutils/, recfile} format for the
184 records, instead of structured RFC 3339 lines. Old logs are not readable
185 by @command{nncp-log} anymore.
188 @option{-autotoss*} option workability with @command{nncp-daemon}'s
189 @option{-inetd} mode.
192 Call's @option{when-tx-exists} allows to make a call only when outbound
193 packets exists. Combined with seconds-aware cron expression that can be
194 used as some kind of auto dialler.
197 @command{nncp-cronexpr} command allows you to check validity and
198 expectations of specified cron expression.
203 @section Release 5.6.0
207 @option{-autotoss*} option runs tosser not after the call, but every
208 second while it is active.
211 @option{autotoss}, @option{autotoss-doseen},
212 @option{autotoss-nofile}, @option{autotoss-nofreq},
213 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
214 @option{calls} configuration section. You can configure per-call
215 automatic tosser options.
218 Use vendoring, instead of @env{GOPATH} overriding during tarball
219 installation, because current minimal Go's version is 1.12 and it
225 @section Release 5.5.1
229 Respect for @env{BINDIR}, @env{INFODIR} and @env{DOCDIR} environment
230 variables in @file{config} during installation.
235 @section Release 5.5.0
239 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
240 @command{nncp-bundle} and @command{nncp-stat}.
243 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
246 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
247 options now. Uncompressed packets are not compatible with previous NNCP
251 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
252 have @option{-autotoss*} options for running tosser after call is ended.
255 Updated dependencies. Minimal required Go version is 1.12.
260 @section Release 5.4.1
264 Fixed @code{SENDMAIL} variable usage during the build.
269 @section Release 5.4.0
273 Updated dependencies.
276 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
277 This should not influence package maintainers, because minimal @command{redo}
278 implementation is included in tarball.
283 @section Release 5.3.3
287 More various error checks.
290 Updated dependencies.
295 @section Release 5.3.2
299 Fixed incorrect logic of @option{onlinedeadline} timeout, where
300 connection won't take into account incoming packets events and will
301 forcefully disconnect.
306 @section Release 5.3.1
310 Fixed @option{onlinedeadline} workability with call addresses that use
311 external commands (@verb{#"|somecmd"#}).
314 @command{nncp-stat} has @option{-pkt} option displaying information
315 about each packet in the spool.
320 @section Release 5.3.0
324 Progress messages contain prefix, describing the running action.
327 Fixed not occurring handshake messages padding.
330 Finish all SP protocol related goroutines, less memory leak.
333 SP protocol generates less socket write calls, thus generating less TCP
337 Check @option{onlinedeadline} and @option{maxonlinetime} options every
338 second, independently from socket reads (up to 10 seconds).
341 Once per minute, if no other traffic exists, PING packets are sent in
342 SP-connection. That allows faster determining of connection unworkability.
345 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
350 @section Release 5.2.1
354 Fixed SP protocol error handling, sometimes causing program panic.
359 @section Release 5.2.0
363 Most commands by default show oneline operations progress.
364 @option{-progress}, @option{-noprogress} command line options,
365 @option{noprogress} configuration file option appeared.
368 Fixed incorrect @command{nncp-check} command return code, that returned
369 bad code when everything is good.
372 Free disk space check during @command{nncp-bundle -rx} call.
377 @section Release 5.1.2
381 @strong{Critical} vulnerability: remote peers authentication could lead
382 to incorrect identification of remote side, allowing foreign encrypted
386 Bugfix: private and public Noise keys were swapped in newly created
387 configuration files, that lead to inability to authenticate online peers.
390 Explicit directories fsync-ing for guaranteed files renaming.
395 @section Release 5.1.1
399 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
404 @section Release 5.1.0
408 @command{nncp-file} can send directories, automatically creating pax
412 Free disk space is checked during outbound packets creation.
415 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
416 file options replaced with the structure:
417 @option{freq: @{path: ..., minsize: ..., chunked: ...@}}.
420 Added @option{freq.maxsize} configuration file option, forbidding of
421 freq sending larger than specified size.
424 Ability to notify about successfully executed commands (exec) with
425 @option{notify.exec} configuration file option.
430 @section Release 5.0.0
434 @strong{Incompatible} configuration file format change: YAML is
435 replaced with Hjson, due to its simplicity, without noticeable lack
436 of either functionality or convenience.
439 @strong{Incompatible} plain packet format changes. Older versions are
440 not supported. @code{zlib} compression is replaced with
441 @code{Zstandard}, due to its speed and efficiency, despite library
442 version is not mature enough.
445 Ability to call remote nodes via pipe call of external command, not only
449 @command{nncp-cfgnew} generates configuration file with many
450 comments. @option{-nocomments} option can be used for an old
454 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
455 avoid possible collisions with @file{.nncp.chunkCTR}.
458 Ability to override process umask through configuration file option.
461 Files and directories are created with 666/777 permissions by default,
462 allowing control with @command{umask}.
465 Updated dependencies.
468 Full usage of go modules for dependencies management
469 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
472 Forbid any later GNU GPL version autousage
473 (project's licence now is GNU GPLv3-only).
480 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
488 @strong{Incompatible} encrypted and eblob packet format change: AEAD
489 encryption mode with 128 KiB blocks is used now, because previously
490 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
491 decrypted data to external command. Older versions are not supported.
494 Available free space checking before copying in @command{nncp-xfer},
495 @command{nncp-daemon}, @command{nncp-call(er)}.
498 @command{nncp-call} has ability only to list packets on remote node,
499 without their transmission.
502 @command{nncp-call} has ability to transfer only specified packets.
505 Workability of @option{xxrate} preference in @option{calls}
506 configuration file section.
509 Dependant libraries are updated.
515 Begin using of @code{go.mod} subsystem.
522 @item @command{nncp-daemon} can be run as @command{inetd}-service.
530 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
531 if @file{.seen} exists and treat it like file was already downloaded.
532 Possibly it was transferred out-of-bound and remote side needs to be
536 If higher priority packet is spooled, then @command{nncp-daemon} will
537 queue its sending first, interrupting lower priority transmissions.
540 Simple packet rate limiter added to online-related tools
541 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
544 Ability to specify niceness with symbolic notation:
545 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
548 Changed default niceness levels:
549 for @command{nncp-exec} from 64 to 96,
550 for @command{nncp-freq} from 64 to 160,
551 for @command{nncp-file} from 196 to 224.
559 @strong{Incompatible} @emph{bundle} archive format changes and
560 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
561 valid tar archives, but Go 1.9 made them invalid because of long paths
562 inside. NNCP accidentally was dependant on that bug. Explicit adding of
563 @file{NNCP/} directory in archive restores workability with valid tar
571 Ability to disable relaying at all using @verb{|-via -|} command line option.
579 @strong{Incompatible} plain packet format changes. Older versions are
583 Ability to queue remote command execution, by configuring @option{exec}
584 option in configuration file and using @command{nncp-exec} command:
587 @command{nncp-mail} command is replaced with more flexible
588 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
589 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
591 @option{sendmail} configuration file option is replaced with
592 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
593 @verb{|exec: sendmail: [...]|}.
597 Ability to override @option{via} configuration option for destination
598 node via @option{-via} command line option for following commands:
599 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
602 Chunked files, having size less than specified chunk size, will be sent
603 as an ordinary single file.
606 Exec commands are invoked with additional @env{NNCP_NICE} and
607 @env{NNCP_SELF} environment variables.
610 Files, that are sent as a reply to freq, have niceness level taken from
611 the freq packet. You can set desired niceness during @command{nncp-freq}
612 invocation using @option{-replynice} option.
615 @command{nncp-toss} command can ignore specified packet types during
616 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
620 @command{nncp-file} command uses
621 @option{FreqMinSize}/@option{FreqChunked} configuration file options
622 for @option{-minsize}/@option{-chunked} by default. You can turn this
623 off by specifying zero value.
632 @strong{Incompatible} encrypted/eblob packet format changes. Older
633 versions are not supported.
636 Twofish encryption algorithm is replaced with ChaCha20. It is much more
637 faster. One cryptographic primitive less.
640 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
641 another cryptographic primitive less (assuming that BLAKE2X is nearly
642 identical to BLAKE2).
651 @strong{Incompatible} encrypted packet format changes. Older versions
655 @command{nncp-bundle} command can either create stream of encrypted
656 packets, or digest it. It is useful when dealing with
657 @code{stdin}/@code{stdout} based transmission methods (like writing to
658 CD-ROM without intermediate prepared ISO image and working with tape
662 @command{nncp-toss} is able to create @file{.seen} files preventing
663 duplicate packets receiving.
666 Single background checksum verifier worker is allowed in
667 @command{nncp-call}. This is helpful when thousands of small inbound
668 packets could create many goroutines.
671 Ability to override path to spool directory and logfile through either
672 command line argument, or environment variable.
675 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
676 @file{.part}, @file{.lock} and temporary files.
681 @section Release 0.12
683 @item Sendmail command is called with @env{NNCP_SENDER} environment variable.
687 @section Release 0.11
689 @item @command{nncp-stat}'s command output is sorted by node name.
693 @section Release 0.10
696 @command{nncp-freq}'s @file{DST} argument is optional now. Last
697 @file{SRC} path's element will be used by default.
704 Fix @option{-rx}/@option{-tx} arguments processing in
705 @command{nncp-call} command. They were ignored.
712 Little bugfix in @command{nncp-file} command, where @option{-minsize}
713 option for unchunked transfer was not in KiBs, but in bytes.
721 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
722 encrypted temporary file for that.
725 Chunked files transmission appeared with corresponding
726 @command{nncp-reass} command and @option{freqchunked} configuration file
727 entry. Useful for transferring big files over small storage devices.
730 @option{freqminsize} configuration file option, analogue to
731 @option{-minsize} one.
734 @command{nncp-xfer}'s @option{-force} option is renamed to
735 @option{-mkdir} for clarity.
738 @option{-minsize} option is specified in KiBs, not bytes, for
742 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
743 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
744 common prefix and are grouped together for convenience.
747 @command{nncp-cfgenc} command appeared, allowing configuration file
748 encryption/decryption, for keeping it safe without any either OpenPGP or
752 Cryptographic libraries (dependencies) are updated.
759 @item Small @command{nncp-rm} command appeared.
760 @item Cryptographic libraries (dependencies) are updated.
767 Trivial small fix in default niceness level of @command{nncp-file}
768 and @command{nncp-freq} commands.
776 Small fix in @command{nncp-call}, @command{nncp-caller},
777 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
781 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
782 and more convenient to use.
785 @command{nncp-mincfg} command appeared: helper allowing to create
786 minimalistic stripped down configuration file without private keys, that
787 is useful during @command{nncp-xfer} usage.
794 @item Fixed compatibility with Go 1.6.
802 @strong{Incompatible} packet's format change (magic number is changed
803 too): size field is encrypted and is not send in plaintext anymore.
806 @option{-minsize} option gives ability to automatically pad outgoing
807 packets to specified minimal size.
810 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
811 always check new @emph{tx} packets appearance in the background while
812 connected. Remote side is immediately notified.
815 @option{-onlinedeadline} option gives ability to configure timeout of
816 inactivity of online connection, when it could be disconnected. It could
817 be used to keep connection alive for a long time.
820 @option{-maxonlinetime} option gives ability to set maximal allowable
821 online connection aliveness time.
824 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
827 @command{nncp-pkt} command can decompress the data.