4 See also this page @ref{Новости, on russian}.
11 Fixed workability of @command{nncp-file} and @command{nncp-exec}
12 commands, that use temporary file (stdin and @option{-use-tmp}).
15 Fixed disappearing bad return code in @command{nncp-exec} command.
18 Fixed invalid @file{.hdr} generation when transitional packets are used.
21 @option{-all} option appeared in @command{nncp-rm} command, applying to
22 all the nodes at once.
25 @option{-cycle} option appeared in @command{nncp-check} command, looping
26 the check in infinite cycle.
29 @command{nncp-pkt} can parse @file{.hdr} files.
32 Multicasting areas feature appeared. Implemented merely by an additional
33 plain packet type with @command{nncp-toss}, @command{nncp-file} and
34 @command{nncp-exec} commands modification.
39 @section Release 7.0.0
43 Minimal required Go version 1.13.
46 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
47 Because of that, there are backward @strong{incompatible} changes of
48 encrypted files (everything laying in the spool directory) and
49 @file{.meta} files of chunked transfer.
51 Current implementation is far from being optimal: it lacks
52 parallelizable calculations and has higher memory consumption: nearly
53 512 KiB for each 1 GiB of file's data. Future performance and memory
54 size optimizations should not lead to packet's format change. But it is
55 still several times faster than BLAKE2b.
58 Resumed online downloads, because of MTH, require reading only of the
59 preceding part of file, not the whole one as was before.
62 @command{nncp-hash} utility appeared for calculating file's MTH hash.
65 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
66 packets. Lowering number of used primitives. Also, its encrypted
67 packet's header is used as an associated data during encryption.
70 MultiCast Discovery uses
71 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
74 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
77 @command{nncp-stat} reports about partly downloaded packets.
85 @section Release 6.6.0
89 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
90 commands wait for all background checksummers completion after
91 connection is finished.
94 Added possibility of address determining through multicast announcement
95 in local area network, so called MCD (MultiCast Discovery).
100 @section Release 6.5.0
104 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
107 Fixed possible bad return code ignoring in automatic tosser.
110 Fixed race during file descriptors closing when online protocol call is
111 finished, that could lead to write error of received packet fragment.
114 Kill all packet transmission progress bars in @command{nncp-daemon},
115 @command{nncp-call} and @command{nncp-caller} when call is finished.
120 @section Release 6.4.0
124 Fixed possible race in online protocol, that lead to panic.
129 @section Release 6.3.0
133 Fixed possible panic while showing progress during online protocol.
138 @section Release 6.2.1
142 Three places in logs contained excess @code{%s}.
147 @section Release 6.2.0
151 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
154 Yet another logging refactoring and simplification.
155 Should be no visible differences to the end user.
160 @section Release 6.1.0
164 Optimization: most commands do not keep opened file descriptors now.
165 Previously you can exceed maximal number of opened files if you have got
166 many packets in the spool directory.
169 Optimization: do not close file descriptor of the file we download
170 online. Previously each chunk lead to expensive open/close calls.
173 Online downloaded files are saved with @file{.nock} (non-checksummed)
174 suffix, waiting either for @command{nncp-check}, or online daemons to
175 perform integrity check.
178 Optimization: files, that are not resumed, are checksummed immediately
179 during the online download, skipping @file{.nock}-intermediate step.
182 Ability to store encrypted packet's header in @file{.hdr} file, close to
183 the packet itself. That can greatly increase performance of packets
184 listing on filesystems with big block's size.
189 @section Release 6.0.0
193 Log uses human readable and easy machine parseable
194 @url{https://www.gnu.org/software/recutils/, recfile} format for the
195 records, instead of structured RFC 3339 lines. Old logs are not readable
196 by @command{nncp-log} anymore.
199 @option{-autotoss*} option workability with @command{nncp-daemon}'s
200 @option{-inetd} mode.
203 Call's @option{when-tx-exists} allows to make a call only when outbound
204 packets exists. Combined with seconds-aware cron expression that can be
205 used as some kind of auto dialler.
208 @command{nncp-cronexpr} command allows you to check validity and
209 expectations of specified cron expression.
214 @section Release 5.6.0
218 @option{-autotoss*} option runs tosser not after the call, but every
219 second while it is active.
222 @option{autotoss}, @option{autotoss-doseen},
223 @option{autotoss-nofile}, @option{autotoss-nofreq},
224 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
225 @option{calls} configuration section. You can configure per-call
226 automatic tosser options.
229 Use vendoring, instead of @env{GOPATH} overriding during tarball
230 installation, because current minimal Go's version is 1.12 and it
236 @section Release 5.5.1
240 Respect for @env{BINDIR}, @env{INFODIR} and @env{DOCDIR} environment
241 variables in @file{config} during installation.
246 @section Release 5.5.0
250 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
251 @command{nncp-bundle} and @command{nncp-stat}.
254 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
257 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
258 options now. Uncompressed packets are not compatible with previous NNCP
262 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
263 have @option{-autotoss*} options for running tosser after call is ended.
266 Updated dependencies. Minimal required Go version is 1.12.
271 @section Release 5.4.1
275 Fixed @code{SENDMAIL} variable usage during the build.
280 @section Release 5.4.0
284 Updated dependencies.
287 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
288 This should not influence package maintainers, because minimal @command{redo}
289 implementation is included in tarball.
294 @section Release 5.3.3
298 More various error checks.
301 Updated dependencies.
306 @section Release 5.3.2
310 Fixed incorrect logic of @option{onlinedeadline} timeout, where
311 connection won't take into account incoming packets events and will
312 forcefully disconnect.
317 @section Release 5.3.1
321 Fixed @option{onlinedeadline} workability with call addresses that use
322 external commands (@verb{#"|somecmd"#}).
325 @command{nncp-stat} has @option{-pkt} option displaying information
326 about each packet in the spool.
331 @section Release 5.3.0
335 Progress messages contain prefix, describing the running action.
338 Fixed not occurring handshake messages padding.
341 Finish all SP protocol related goroutines, less memory leak.
344 SP protocol generates less socket write calls, thus generating less TCP
348 Check @option{onlinedeadline} and @option{maxonlinetime} options every
349 second, independently from socket reads (up to 10 seconds).
352 Once per minute, if no other traffic exists, PING packets are sent in
353 SP-connection. That allows faster determining of connection unworkability.
356 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
361 @section Release 5.2.1
365 Fixed SP protocol error handling, sometimes causing program panic.
370 @section Release 5.2.0
374 Most commands by default show oneline operations progress.
375 @option{-progress}, @option{-noprogress} command line options,
376 @option{noprogress} configuration file option appeared.
379 Fixed incorrect @command{nncp-check} command return code, that returned
380 bad code when everything is good.
383 Free disk space check during @command{nncp-bundle -rx} call.
388 @section Release 5.1.2
392 @strong{Critical} vulnerability: remote peers authentication could lead
393 to incorrect identification of remote side, allowing foreign encrypted
397 Bugfix: private and public Noise keys were swapped in newly created
398 configuration files, that lead to inability to authenticate online peers.
401 Explicit directories fsync-ing for guaranteed files renaming.
406 @section Release 5.1.1
410 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
415 @section Release 5.1.0
419 @command{nncp-file} can send directories, automatically creating pax
423 Free disk space is checked during outbound packets creation.
426 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
427 file options replaced with the structure:
428 @option{freq: @{path: ..., minsize: ..., chunked: ...@}}.
431 Added @option{freq.maxsize} configuration file option, forbidding of
432 freq sending larger than specified size.
435 Ability to notify about successfully executed commands (exec) with
436 @option{notify.exec} configuration file option.
441 @section Release 5.0.0
445 @strong{Incompatible} configuration file format change: YAML is
446 replaced with Hjson, due to its simplicity, without noticeable lack
447 of either functionality or convenience.
450 @strong{Incompatible} plain packet format changes. Older versions are
451 not supported. @code{zlib} compression is replaced with
452 @code{Zstandard}, due to its speed and efficiency, despite library
453 version is not mature enough.
456 Ability to call remote nodes via pipe call of external command, not only
460 @command{nncp-cfgnew} generates configuration file with many
461 comments. @option{-nocomments} option can be used for an old
465 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
466 avoid possible collisions with @file{.nncp.chunkCTR}.
469 Ability to override process umask through configuration file option.
472 Files and directories are created with 666/777 permissions by default,
473 allowing control with @command{umask}.
476 Updated dependencies.
479 Full usage of go modules for dependencies management
480 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
483 Forbid any later GNU GPL version autousage
484 (project's licence now is GNU GPLv3-only).
491 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
499 @strong{Incompatible} encrypted and eblob packet format change: AEAD
500 encryption mode with 128 KiB blocks is used now, because previously
501 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
502 decrypted data to external command. Older versions are not supported.
505 Available free space checking before copying in @command{nncp-xfer},
506 @command{nncp-daemon}, @command{nncp-call(er)}.
509 @command{nncp-call} has ability only to list packets on remote node,
510 without their transmission.
513 @command{nncp-call} has ability to transfer only specified packets.
516 Workability of @option{xxrate} preference in @option{calls}
517 configuration file section.
520 Dependant libraries are updated.
526 Begin using of @code{go.mod} subsystem.
533 @item @command{nncp-daemon} can be run as @command{inetd}-service.
541 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
542 if @file{.seen} exists and treat it like file was already downloaded.
543 Possibly it was transferred out-of-bound and remote side needs to be
547 If higher priority packet is spooled, then @command{nncp-daemon} will
548 queue its sending first, interrupting lower priority transmissions.
551 Simple packet rate limiter added to online-related tools
552 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
555 Ability to specify niceness with symbolic notation:
556 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
559 Changed default niceness levels:
560 for @command{nncp-exec} from 64 to 96,
561 for @command{nncp-freq} from 64 to 160,
562 for @command{nncp-file} from 196 to 224.
570 @strong{Incompatible} @emph{bundle} archive format changes and
571 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
572 valid tar archives, but Go 1.9 made them invalid because of long paths
573 inside. NNCP accidentally was dependant on that bug. Explicit adding of
574 @file{NNCP/} directory in archive restores workability with valid tar
582 Ability to disable relaying at all using @verb{|-via -|} command line option.
590 @strong{Incompatible} plain packet format changes. Older versions are
594 Ability to queue remote command execution, by configuring @option{exec}
595 option in configuration file and using @command{nncp-exec} command:
598 @command{nncp-mail} command is replaced with more flexible
599 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
600 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
602 @option{sendmail} configuration file option is replaced with
603 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
604 @verb{|exec: sendmail: [...]|}.
608 Ability to override @option{via} configuration option for destination
609 node via @option{-via} command line option for following commands:
610 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
613 Chunked files, having size less than specified chunk size, will be sent
614 as an ordinary single file.
617 Exec commands are invoked with additional @env{NNCP_NICE} and
618 @env{NNCP_SELF} environment variables.
621 Files, that are sent as a reply to freq, have niceness level taken from
622 the freq packet. You can set desired niceness during @command{nncp-freq}
623 invocation using @option{-replynice} option.
626 @command{nncp-toss} command can ignore specified packet types during
627 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
631 @command{nncp-file} command uses
632 @option{FreqMinSize}/@option{FreqChunked} configuration file options
633 for @option{-minsize}/@option{-chunked} by default. You can turn this
634 off by specifying zero value.
643 @strong{Incompatible} encrypted/eblob packet format changes. Older
644 versions are not supported.
647 Twofish encryption algorithm is replaced with ChaCha20. It is much more
648 faster. One cryptographic primitive less.
651 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
652 another cryptographic primitive less (assuming that BLAKE2X is nearly
653 identical to BLAKE2).
662 @strong{Incompatible} encrypted packet format changes. Older versions
666 @command{nncp-bundle} command can either create stream of encrypted
667 packets, or digest it. It is useful when dealing with
668 @code{stdin}/@code{stdout} based transmission methods (like writing to
669 CD-ROM without intermediate prepared ISO image and working with tape
673 @command{nncp-toss} is able to create @file{.seen} files preventing
674 duplicate packets receiving.
677 Single background checksum verifier worker is allowed in
678 @command{nncp-call}. This is helpful when thousands of small inbound
679 packets could create many goroutines.
682 Ability to override path to spool directory and logfile through either
683 command line argument, or environment variable.
686 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
687 @file{.part}, @file{.lock} and temporary files.
692 @section Release 0.12
694 @item Sendmail command is called with @env{NNCP_SENDER} environment variable.
698 @section Release 0.11
700 @item @command{nncp-stat}'s command output is sorted by node name.
704 @section Release 0.10
707 @command{nncp-freq}'s @file{DST} argument is optional now. Last
708 @file{SRC} path's element will be used by default.
715 Fix @option{-rx}/@option{-tx} arguments processing in
716 @command{nncp-call} command. They were ignored.
723 Little bugfix in @command{nncp-file} command, where @option{-minsize}
724 option for unchunked transfer was not in KiBs, but in bytes.
732 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
733 encrypted temporary file for that.
736 Chunked files transmission appeared with corresponding
737 @command{nncp-reass} command and @option{freqchunked} configuration file
738 entry. Useful for transferring big files over small storage devices.
741 @option{freqminsize} configuration file option, analogue to
742 @option{-minsize} one.
745 @command{nncp-xfer}'s @option{-force} option is renamed to
746 @option{-mkdir} for clarity.
749 @option{-minsize} option is specified in KiBs, not bytes, for
753 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
754 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
755 common prefix and are grouped together for convenience.
758 @command{nncp-cfgenc} command appeared, allowing configuration file
759 encryption/decryption, for keeping it safe without any either OpenPGP or
763 Cryptographic libraries (dependencies) are updated.
770 @item Small @command{nncp-rm} command appeared.
771 @item Cryptographic libraries (dependencies) are updated.
778 Trivial small fix in default niceness level of @command{nncp-file}
779 and @command{nncp-freq} commands.
787 Small fix in @command{nncp-call}, @command{nncp-caller},
788 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
792 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
793 and more convenient to use.
796 @command{nncp-mincfg} command appeared: helper allowing to create
797 minimalistic stripped down configuration file without private keys, that
798 is useful during @command{nncp-xfer} usage.
805 @item Fixed compatibility with Go 1.6.
813 @strong{Incompatible} packet's format change (magic number is changed
814 too): size field is encrypted and is not send in plaintext anymore.
817 @option{-minsize} option gives ability to automatically pad outgoing
818 packets to specified minimal size.
821 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
822 always check new @emph{tx} packets appearance in the background while
823 connected. Remote side is immediately notified.
826 @option{-onlinedeadline} option gives ability to configure timeout of
827 inactivity of online connection, when it could be disconnected. It could
828 be used to keep connection alive for a long time.
831 @option{-maxonlinetime} option gives ability to set maximal allowable
832 online connection aliveness time.
835 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
838 @command{nncp-pkt} command can decompress the data.