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 @command{nncp-pkt} can parse @file{.hdr} files.
28 Multicasting areas feature appeared. Implemented merely by an additional
29 plain packet type with @command{nncp-toss}, @command{nncp-file} and
30 @command{nncp-exec} commands modification.
35 @section Release 7.0.0
39 Minimal required Go version 1.13.
42 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
43 Because of that, there are backward @strong{incompatible} changes of
44 encrypted files (everything laying in the spool directory) and
45 @file{.meta} files of chunked transfer.
47 Current implementation is far from being optimal: it lacks
48 parallelizable calculations and has higher memory consumption: nearly
49 512 KiB for each 1 GiB of file's data. Future performance and memory
50 size optimizations should not lead to packet's format change. But it is
51 still several times faster than BLAKE2b.
54 Resumed online downloads, because of MTH, require reading only of the
55 preceding part of file, not the whole one as was before.
58 @command{nncp-hash} utility appeared for calculating file's MTH hash.
61 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
62 packets. Lowering number of used primitives. Also, its encrypted
63 packet's header is used as an associated data during encryption.
66 MultiCast Discovery uses
67 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
70 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
73 @command{nncp-stat} reports about partly downloaded packets.
81 @section Release 6.6.0
85 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
86 commands wait for all background checksummers completion after
87 connection is finished.
90 Added possibility of address determining through multicast announcement
91 in local area network, so called MCD (MultiCast Discovery).
96 @section Release 6.5.0
100 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
103 Fixed possible bad return code ignoring in automatic tosser.
106 Fixed race during file descriptors closing when online protocol call is
107 finished, that could lead to write error of received packet fragment.
110 Kill all packet transmission progress bars in @command{nncp-daemon},
111 @command{nncp-call} and @command{nncp-caller} when call is finished.
116 @section Release 6.4.0
120 Fixed possible race in online protocol, that lead to panic.
125 @section Release 6.3.0
129 Fixed possible panic while showing progress during online protocol.
134 @section Release 6.2.1
138 Three places in logs contained excess @code{%s}.
143 @section Release 6.2.0
147 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
150 Yet another logging refactoring and simplification.
151 Should be no visible differences to the end user.
156 @section Release 6.1.0
160 Optimization: most commands do not keep opened file descriptors now.
161 Previously you can exceed maximal number of opened files if you have got
162 many packets in the spool directory.
165 Optimization: do not close file descriptor of the file we download
166 online. Previously each chunk lead to expensive open/close calls.
169 Online downloaded files are saved with @file{.nock} (non-checksummed)
170 suffix, waiting either for @command{nncp-check}, or online daemons to
171 perform integrity check.
174 Optimization: files, that are not resumed, are checksummed immediately
175 during the online download, skipping @file{.nock}-intermediate step.
178 Ability to store encrypted packet's header in @file{.hdr} file, close to
179 the packet itself. That can greatly increase performance of packets
180 listing on filesystems with big block's size.
185 @section Release 6.0.0
189 Log uses human readable and easy machine parseable
190 @url{https://www.gnu.org/software/recutils/, recfile} format for the
191 records, instead of structured RFC 3339 lines. Old logs are not readable
192 by @command{nncp-log} anymore.
195 @option{-autotoss*} option workability with @command{nncp-daemon}'s
196 @option{-inetd} mode.
199 Call's @option{when-tx-exists} allows to make a call only when outbound
200 packets exists. Combined with seconds-aware cron expression that can be
201 used as some kind of auto dialler.
204 @command{nncp-cronexpr} command allows you to check validity and
205 expectations of specified cron expression.
210 @section Release 5.6.0
214 @option{-autotoss*} option runs tosser not after the call, but every
215 second while it is active.
218 @option{autotoss}, @option{autotoss-doseen},
219 @option{autotoss-nofile}, @option{autotoss-nofreq},
220 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
221 @option{calls} configuration section. You can configure per-call
222 automatic tosser options.
225 Use vendoring, instead of @env{GOPATH} overriding during tarball
226 installation, because current minimal Go's version is 1.12 and it
232 @section Release 5.5.1
236 Respect for @env{BINDIR}, @env{INFODIR} and @env{DOCDIR} environment
237 variables in @file{config} during installation.
242 @section Release 5.5.0
246 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
247 @command{nncp-bundle} and @command{nncp-stat}.
250 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
253 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
254 options now. Uncompressed packets are not compatible with previous NNCP
258 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
259 have @option{-autotoss*} options for running tosser after call is ended.
262 Updated dependencies. Minimal required Go version is 1.12.
267 @section Release 5.4.1
271 Fixed @code{SENDMAIL} variable usage during the build.
276 @section Release 5.4.0
280 Updated dependencies.
283 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
284 This should not influence package maintainers, because minimal @command{redo}
285 implementation is included in tarball.
290 @section Release 5.3.3
294 More various error checks.
297 Updated dependencies.
302 @section Release 5.3.2
306 Fixed incorrect logic of @option{onlinedeadline} timeout, where
307 connection won't take into account incoming packets events and will
308 forcefully disconnect.
313 @section Release 5.3.1
317 Fixed @option{onlinedeadline} workability with call addresses that use
318 external commands (@verb{#"|somecmd"#}).
321 @command{nncp-stat} has @option{-pkt} option displaying information
322 about each packet in the spool.
327 @section Release 5.3.0
331 Progress messages contain prefix, describing the running action.
334 Fixed not occurring handshake messages padding.
337 Finish all SP protocol related goroutines, less memory leak.
340 SP protocol generates less socket write calls, thus generating less TCP
344 Check @option{onlinedeadline} and @option{maxonlinetime} options every
345 second, independently from socket reads (up to 10 seconds).
348 Once per minute, if no other traffic exists, PING packets are sent in
349 SP-connection. That allows faster determining of connection unworkability.
352 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
357 @section Release 5.2.1
361 Fixed SP protocol error handling, sometimes causing program panic.
366 @section Release 5.2.0
370 Most commands by default show oneline operations progress.
371 @option{-progress}, @option{-noprogress} command line options,
372 @option{noprogress} configuration file option appeared.
375 Fixed incorrect @command{nncp-check} command return code, that returned
376 bad code when everything is good.
379 Free disk space check during @command{nncp-bundle -rx} call.
384 @section Release 5.1.2
388 @strong{Critical} vulnerability: remote peers authentication could lead
389 to incorrect identification of remote side, allowing foreign encrypted
393 Bugfix: private and public Noise keys were swapped in newly created
394 configuration files, that lead to inability to authenticate online peers.
397 Explicit directories fsync-ing for guaranteed files renaming.
402 @section Release 5.1.1
406 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
411 @section Release 5.1.0
415 @command{nncp-file} can send directories, automatically creating pax
419 Free disk space is checked during outbound packets creation.
422 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
423 file options replaced with the structure:
424 @option{freq: @{path: ..., minsize: ..., chunked: ...@}}.
427 Added @option{freq.maxsize} configuration file option, forbidding of
428 freq sending larger than specified size.
431 Ability to notify about successfully executed commands (exec) with
432 @option{notify.exec} configuration file option.
437 @section Release 5.0.0
441 @strong{Incompatible} configuration file format change: YAML is
442 replaced with Hjson, due to its simplicity, without noticeable lack
443 of either functionality or convenience.
446 @strong{Incompatible} plain packet format changes. Older versions are
447 not supported. @code{zlib} compression is replaced with
448 @code{Zstandard}, due to its speed and efficiency, despite library
449 version is not mature enough.
452 Ability to call remote nodes via pipe call of external command, not only
456 @command{nncp-cfgnew} generates configuration file with many
457 comments. @option{-nocomments} option can be used for an old
461 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
462 avoid possible collisions with @file{.nncp.chunkCTR}.
465 Ability to override process umask through configuration file option.
468 Files and directories are created with 666/777 permissions by default,
469 allowing control with @command{umask}.
472 Updated dependencies.
475 Full usage of go modules for dependencies management
476 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
479 Forbid any later GNU GPL version autousage
480 (project's licence now is GNU GPLv3-only).
487 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
495 @strong{Incompatible} encrypted and eblob packet format change: AEAD
496 encryption mode with 128 KiB blocks is used now, because previously
497 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
498 decrypted data to external command. Older versions are not supported.
501 Available free space checking before copying in @command{nncp-xfer},
502 @command{nncp-daemon}, @command{nncp-call(er)}.
505 @command{nncp-call} has ability only to list packets on remote node,
506 without their transmission.
509 @command{nncp-call} has ability to transfer only specified packets.
512 Workability of @option{xxrate} preference in @option{calls}
513 configuration file section.
516 Dependant libraries are updated.
522 Begin using of @code{go.mod} subsystem.
529 @item @command{nncp-daemon} can be run as @command{inetd}-service.
537 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
538 if @file{.seen} exists and treat it like file was already downloaded.
539 Possibly it was transferred out-of-bound and remote side needs to be
543 If higher priority packet is spooled, then @command{nncp-daemon} will
544 queue its sending first, interrupting lower priority transmissions.
547 Simple packet rate limiter added to online-related tools
548 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
551 Ability to specify niceness with symbolic notation:
552 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
555 Changed default niceness levels:
556 for @command{nncp-exec} from 64 to 96,
557 for @command{nncp-freq} from 64 to 160,
558 for @command{nncp-file} from 196 to 224.
566 @strong{Incompatible} @emph{bundle} archive format changes and
567 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
568 valid tar archives, but Go 1.9 made them invalid because of long paths
569 inside. NNCP accidentally was dependant on that bug. Explicit adding of
570 @file{NNCP/} directory in archive restores workability with valid tar
578 Ability to disable relaying at all using @verb{|-via -|} command line option.
586 @strong{Incompatible} plain packet format changes. Older versions are
590 Ability to queue remote command execution, by configuring @option{exec}
591 option in configuration file and using @command{nncp-exec} command:
594 @command{nncp-mail} command is replaced with more flexible
595 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
596 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
598 @option{sendmail} configuration file option is replaced with
599 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
600 @verb{|exec: sendmail: [...]|}.
604 Ability to override @option{via} configuration option for destination
605 node via @option{-via} command line option for following commands:
606 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
609 Chunked files, having size less than specified chunk size, will be sent
610 as an ordinary single file.
613 Exec commands are invoked with additional @env{NNCP_NICE} and
614 @env{NNCP_SELF} environment variables.
617 Files, that are sent as a reply to freq, have niceness level taken from
618 the freq packet. You can set desired niceness during @command{nncp-freq}
619 invocation using @option{-replynice} option.
622 @command{nncp-toss} command can ignore specified packet types during
623 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
627 @command{nncp-file} command uses
628 @option{FreqMinSize}/@option{FreqChunked} configuration file options
629 for @option{-minsize}/@option{-chunked} by default. You can turn this
630 off by specifying zero value.
639 @strong{Incompatible} encrypted/eblob packet format changes. Older
640 versions are not supported.
643 Twofish encryption algorithm is replaced with ChaCha20. It is much more
644 faster. One cryptographic primitive less.
647 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
648 another cryptographic primitive less (assuming that BLAKE2X is nearly
649 identical to BLAKE2).
658 @strong{Incompatible} encrypted packet format changes. Older versions
662 @command{nncp-bundle} command can either create stream of encrypted
663 packets, or digest it. It is useful when dealing with
664 @code{stdin}/@code{stdout} based transmission methods (like writing to
665 CD-ROM without intermediate prepared ISO image and working with tape
669 @command{nncp-toss} is able to create @file{.seen} files preventing
670 duplicate packets receiving.
673 Single background checksum verifier worker is allowed in
674 @command{nncp-call}. This is helpful when thousands of small inbound
675 packets could create many goroutines.
678 Ability to override path to spool directory and logfile through either
679 command line argument, or environment variable.
682 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
683 @file{.part}, @file{.lock} and temporary files.
688 @section Release 0.12
690 @item Sendmail command is called with @env{NNCP_SENDER} environment variable.
694 @section Release 0.11
696 @item @command{nncp-stat}'s command output is sorted by node name.
700 @section Release 0.10
703 @command{nncp-freq}'s @file{DST} argument is optional now. Last
704 @file{SRC} path's element will be used by default.
711 Fix @option{-rx}/@option{-tx} arguments processing in
712 @command{nncp-call} command. They were ignored.
719 Little bugfix in @command{nncp-file} command, where @option{-minsize}
720 option for unchunked transfer was not in KiBs, but in bytes.
728 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
729 encrypted temporary file for that.
732 Chunked files transmission appeared with corresponding
733 @command{nncp-reass} command and @option{freqchunked} configuration file
734 entry. Useful for transferring big files over small storage devices.
737 @option{freqminsize} configuration file option, analogue to
738 @option{-minsize} one.
741 @command{nncp-xfer}'s @option{-force} option is renamed to
742 @option{-mkdir} for clarity.
745 @option{-minsize} option is specified in KiBs, not bytes, for
749 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
750 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
751 common prefix and are grouped together for convenience.
754 @command{nncp-cfgenc} command appeared, allowing configuration file
755 encryption/decryption, for keeping it safe without any either OpenPGP or
759 Cryptographic libraries (dependencies) are updated.
766 @item Small @command{nncp-rm} command appeared.
767 @item Cryptographic libraries (dependencies) are updated.
774 Trivial small fix in default niceness level of @command{nncp-file}
775 and @command{nncp-freq} commands.
783 Small fix in @command{nncp-call}, @command{nncp-caller},
784 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
788 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
789 and more convenient to use.
792 @command{nncp-mincfg} command appeared: helper allowing to create
793 minimalistic stripped down configuration file without private keys, that
794 is useful during @command{nncp-xfer} usage.
801 @item Fixed compatibility with Go 1.6.
809 @strong{Incompatible} packet's format change (magic number is changed
810 too): size field is encrypted and is not send in plaintext anymore.
813 @option{-minsize} option gives ability to automatically pad outgoing
814 packets to specified minimal size.
817 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
818 always check new @emph{tx} packets appearance in the background while
819 connected. Remote side is immediately notified.
822 @option{-onlinedeadline} option gives ability to configure timeout of
823 inactivity of online connection, when it could be disconnected. It could
824 be used to keep connection alive for a long time.
827 @option{-maxonlinetime} option gives ability to set maximal allowable
828 online connection aliveness time.
831 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
834 @command{nncp-pkt} command can decompress the data.