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.
18 Do not relay multicast packet to area message's originator, that
19 obviously has seen its own packet.
22 Much less memory usage during MTH hashing when offset is zero: when
23 packet is not resumed, but for example checked with @command{nncp-check}
29 @section Release 7.1.1
33 Fixed failing directories fsync after @file{.seen} file creation.
38 @section Release 7.1.0
42 Multicasting areas feature appeared. Implemented merely by an additional
43 plain packet type with @command{nncp-toss}, @command{nncp-file} and
44 @command{nncp-exec} commands modification.
47 Fixed workability of @command{nncp-file} and @command{nncp-exec}
48 commands, that use temporary file (stdin and @option{-use-tmp}).
51 Fixed disappearing bad return code in @command{nncp-exec} command.
54 Fixed invalid @file{.hdr} generation when transitional packets are used.
57 @option{-all} option appeared in @command{nncp-rm} command, applying to
58 all the nodes at once.
61 @option{-cycle} option appeared in @command{nncp-check} command, looping
62 the check in infinite cycle.
65 @command{nncp-rm} command can take node alias name.
68 @command{nncp-pkt} can parse @file{.hdr} files.
73 @section Release 7.0.0
77 Minimal required Go version 1.13.
80 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
81 Because of that, there are backward @strong{incompatible} changes of
82 encrypted files (everything laying in the spool directory) and
83 @file{.meta} files of chunked transfer.
85 Current implementation is far from being optimal: it lacks
86 parallelizable calculations and has higher memory consumption: nearly
87 512 KiB for each 1 GiB of file's data. Future performance and memory
88 size optimizations should not lead to packet's format change. But it is
89 still several times faster than BLAKE2b.
92 Resumed online downloads, because of MTH, require reading only of the
93 preceding part of file, not the whole one as was before.
96 @command{nncp-hash} utility appeared for calculating file's MTH hash.
99 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
100 packets. Lowering number of used primitives. Also, its encrypted
101 packet's header is used as an associated data during encryption.
104 MultiCast Discovery uses
105 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
108 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
111 @command{nncp-stat} reports about partly downloaded packets.
114 Updated dependencies.
119 @section Release 6.6.0
123 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
124 commands wait for all background checksummers completion after
125 connection is finished.
128 Added possibility of address determining through multicast announcement
129 in local area network, so called MCD (MultiCast Discovery).
134 @section Release 6.5.0
138 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
141 Fixed possible bad return code ignoring in automatic tosser.
144 Fixed race during file descriptors closing when online protocol call is
145 finished, that could lead to write error of received packet fragment.
148 Kill all packet transmission progress bars in @command{nncp-daemon},
149 @command{nncp-call} and @command{nncp-caller} when call is finished.
154 @section Release 6.4.0
158 Fixed possible race in online protocol, that lead to panic.
163 @section Release 6.3.0
167 Fixed possible panic while showing progress during online protocol.
172 @section Release 6.2.1
176 Three places in logs contained excess @code{%s}.
181 @section Release 6.2.0
185 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
188 Yet another logging refactoring and simplification.
189 Should be no visible differences to the end user.
194 @section Release 6.1.0
198 Optimization: most commands do not keep opened file descriptors now.
199 Previously you can exceed maximal number of opened files if you have got
200 many packets in the spool directory.
203 Optimization: do not close file descriptor of the file we download
204 online. Previously each chunk lead to expensive open/close calls.
207 Online downloaded files are saved with @file{.nock} (non-checksummed)
208 suffix, waiting either for @command{nncp-check}, or online daemons to
209 perform integrity check.
212 Optimization: files, that are not resumed, are checksummed immediately
213 during the online download, skipping @file{.nock}-intermediate step.
216 Ability to store encrypted packet's header in @file{.hdr} file, close to
217 the packet itself. That can greatly increase performance of packets
218 listing on filesystems with big block's size.
223 @section Release 6.0.0
227 Log uses human readable and easy machine parseable
228 @url{https://www.gnu.org/software/recutils/, recfile} format for the
229 records, instead of structured RFC 3339 lines. Old logs are not readable
230 by @command{nncp-log} anymore.
233 @option{-autotoss*} option workability with @command{nncp-daemon}'s
234 @option{-inetd} mode.
237 Call's @option{when-tx-exists} allows to make a call only when outbound
238 packets exists. Combined with seconds-aware cron expression that can be
239 used as some kind of auto dialler.
242 @command{nncp-cronexpr} command allows you to check validity and
243 expectations of specified cron expression.
248 @section Release 5.6.0
252 @option{-autotoss*} option runs tosser not after the call, but every
253 second while it is active.
256 @option{autotoss}, @option{autotoss-doseen},
257 @option{autotoss-nofile}, @option{autotoss-nofreq},
258 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
259 @option{calls} configuration section. You can configure per-call
260 automatic tosser options.
263 Use vendoring, instead of @env{GOPATH} overriding during tarball
264 installation, because current minimal Go's version is 1.12 and it
270 @section Release 5.5.1
274 Respect for @env{BINDIR}, @env{INFODIR} and @env{DOCDIR} environment
275 variables in @file{config} during installation.
280 @section Release 5.5.0
284 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
285 @command{nncp-bundle} and @command{nncp-stat}.
288 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
291 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
292 options now. Uncompressed packets are not compatible with previous NNCP
296 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
297 have @option{-autotoss*} options for running tosser after call is ended.
300 Updated dependencies. Minimal required Go version is 1.12.
305 @section Release 5.4.1
309 Fixed @code{SENDMAIL} variable usage during the build.
314 @section Release 5.4.0
318 Updated dependencies.
321 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
322 This should not influence package maintainers, because minimal @command{redo}
323 implementation is included in tarball.
328 @section Release 5.3.3
332 More various error checks.
335 Updated dependencies.
340 @section Release 5.3.2
344 Fixed incorrect logic of @option{onlinedeadline} timeout, where
345 connection won't take into account incoming packets events and will
346 forcefully disconnect.
351 @section Release 5.3.1
355 Fixed @option{onlinedeadline} workability with call addresses that use
356 external commands (@verb{#"|somecmd"#}).
359 @command{nncp-stat} has @option{-pkt} option displaying information
360 about each packet in the spool.
365 @section Release 5.3.0
369 Progress messages contain prefix, describing the running action.
372 Fixed not occurring handshake messages padding.
375 Finish all SP protocol related goroutines, less memory leak.
378 SP protocol generates less socket write calls, thus generating less TCP
382 Check @option{onlinedeadline} and @option{maxonlinetime} options every
383 second, independently from socket reads (up to 10 seconds).
386 Once per minute, if no other traffic exists, PING packets are sent in
387 SP-connection. That allows faster determining of connection unworkability.
390 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
395 @section Release 5.2.1
399 Fixed SP protocol error handling, sometimes causing program panic.
404 @section Release 5.2.0
408 Most commands by default show oneline operations progress.
409 @option{-progress}, @option{-noprogress} command line options,
410 @option{noprogress} configuration file option appeared.
413 Fixed incorrect @command{nncp-check} command return code, that returned
414 bad code when everything is good.
417 Free disk space check during @command{nncp-bundle -rx} call.
422 @section Release 5.1.2
426 @strong{Critical} vulnerability: remote peers authentication could lead
427 to incorrect identification of remote side, allowing foreign encrypted
431 Bugfix: private and public Noise keys were swapped in newly created
432 configuration files, that lead to inability to authenticate online peers.
435 Explicit directories fsync-ing for guaranteed files renaming.
440 @section Release 5.1.1
444 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
449 @section Release 5.1.0
453 @command{nncp-file} can send directories, automatically creating pax
457 Free disk space is checked during outbound packets creation.
460 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
461 file options replaced with the structure:
462 @option{freq: @{path: ..., minsize: ..., chunked: ...@}}.
465 Added @option{freq.maxsize} configuration file option, forbidding of
466 freq sending larger than specified size.
469 Ability to notify about successfully executed commands (exec) with
470 @option{notify.exec} configuration file option.
475 @section Release 5.0.0
479 @strong{Incompatible} configuration file format change: YAML is
480 replaced with Hjson, due to its simplicity, without noticeable lack
481 of either functionality or convenience.
484 @strong{Incompatible} plain packet format changes. Older versions are
485 not supported. @code{zlib} compression is replaced with
486 @code{Zstandard}, due to its speed and efficiency, despite library
487 version is not mature enough.
490 Ability to call remote nodes via pipe call of external command, not only
494 @command{nncp-cfgnew} generates configuration file with many
495 comments. @option{-nocomments} option can be used for an old
499 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
500 avoid possible collisions with @file{.nncp.chunkCTR}.
503 Ability to override process umask through configuration file option.
506 Files and directories are created with 666/777 permissions by default,
507 allowing control with @command{umask}.
510 Updated dependencies.
513 Full usage of go modules for dependencies management
514 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
517 Forbid any later GNU GPL version autousage
518 (project's licence now is GNU GPLv3-only).
525 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
533 @strong{Incompatible} encrypted and eblob packet format change: AEAD
534 encryption mode with 128 KiB blocks is used now, because previously
535 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
536 decrypted data to external command. Older versions are not supported.
539 Available free space checking before copying in @command{nncp-xfer},
540 @command{nncp-daemon}, @command{nncp-call(er)}.
543 @command{nncp-call} has ability only to list packets on remote node,
544 without their transmission.
547 @command{nncp-call} has ability to transfer only specified packets.
550 Workability of @option{xxrate} preference in @option{calls}
551 configuration file section.
554 Dependant libraries are updated.
560 Begin using of @code{go.mod} subsystem.
567 @item @command{nncp-daemon} can be run as @command{inetd}-service.
575 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
576 if @file{.seen} exists and treat it like file was already downloaded.
577 Possibly it was transferred out-of-bound and remote side needs to be
581 If higher priority packet is spooled, then @command{nncp-daemon} will
582 queue its sending first, interrupting lower priority transmissions.
585 Simple packet rate limiter added to online-related tools
586 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
589 Ability to specify niceness with symbolic notation:
590 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
593 Changed default niceness levels:
594 for @command{nncp-exec} from 64 to 96,
595 for @command{nncp-freq} from 64 to 160,
596 for @command{nncp-file} from 196 to 224.
604 @strong{Incompatible} @emph{bundle} archive format changes and
605 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
606 valid tar archives, but Go 1.9 made them invalid because of long paths
607 inside. NNCP accidentally was dependant on that bug. Explicit adding of
608 @file{NNCP/} directory in archive restores workability with valid tar
616 Ability to disable relaying at all using @verb{|-via -|} command line option.
624 @strong{Incompatible} plain packet format changes. Older versions are
628 Ability to queue remote command execution, by configuring @option{exec}
629 option in configuration file and using @command{nncp-exec} command:
632 @command{nncp-mail} command is replaced with more flexible
633 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
634 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
636 @option{sendmail} configuration file option is replaced with
637 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
638 @verb{|exec: sendmail: [...]|}.
642 Ability to override @option{via} configuration option for destination
643 node via @option{-via} command line option for following commands:
644 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
647 Chunked files, having size less than specified chunk size, will be sent
648 as an ordinary single file.
651 Exec commands are invoked with additional @env{NNCP_NICE} and
652 @env{NNCP_SELF} environment variables.
655 Files, that are sent as a reply to freq, have niceness level taken from
656 the freq packet. You can set desired niceness during @command{nncp-freq}
657 invocation using @option{-replynice} option.
660 @command{nncp-toss} command can ignore specified packet types during
661 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
665 @command{nncp-file} command uses
666 @option{FreqMinSize}/@option{FreqChunked} configuration file options
667 for @option{-minsize}/@option{-chunked} by default. You can turn this
668 off by specifying zero value.
677 @strong{Incompatible} encrypted/eblob packet format changes. Older
678 versions are not supported.
681 Twofish encryption algorithm is replaced with ChaCha20. It is much more
682 faster. One cryptographic primitive less.
685 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
686 another cryptographic primitive less (assuming that BLAKE2X is nearly
687 identical to BLAKE2).
696 @strong{Incompatible} encrypted packet format changes. Older versions
700 @command{nncp-bundle} command can either create stream of encrypted
701 packets, or digest it. It is useful when dealing with
702 @code{stdin}/@code{stdout} based transmission methods (like writing to
703 CD-ROM without intermediate prepared ISO image and working with tape
707 @command{nncp-toss} is able to create @file{.seen} files preventing
708 duplicate packets receiving.
711 Single background checksum verifier worker is allowed in
712 @command{nncp-call}. This is helpful when thousands of small inbound
713 packets could create many goroutines.
716 Ability to override path to spool directory and logfile through either
717 command line argument, or environment variable.
720 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
721 @file{.part}, @file{.lock} and temporary files.
726 @section Release 0.12
728 @item Sendmail command is called with @env{NNCP_SENDER} environment variable.
732 @section Release 0.11
734 @item @command{nncp-stat}'s command output is sorted by node name.
738 @section Release 0.10
741 @command{nncp-freq}'s @file{DST} argument is optional now. Last
742 @file{SRC} path's element will be used by default.
749 Fix @option{-rx}/@option{-tx} arguments processing in
750 @command{nncp-call} command. They were ignored.
757 Little bugfix in @command{nncp-file} command, where @option{-minsize}
758 option for unchunked transfer was not in KiBs, but in bytes.
766 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
767 encrypted temporary file for that.
770 Chunked files transmission appeared with corresponding
771 @command{nncp-reass} command and @option{freqchunked} configuration file
772 entry. Useful for transferring big files over small storage devices.
775 @option{freqminsize} configuration file option, analogue to
776 @option{-minsize} one.
779 @command{nncp-xfer}'s @option{-force} option is renamed to
780 @option{-mkdir} for clarity.
783 @option{-minsize} option is specified in KiBs, not bytes, for
787 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
788 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
789 common prefix and are grouped together for convenience.
792 @command{nncp-cfgenc} command appeared, allowing configuration file
793 encryption/decryption, for keeping it safe without any either OpenPGP or
797 Cryptographic libraries (dependencies) are updated.
804 @item Small @command{nncp-rm} command appeared.
805 @item Cryptographic libraries (dependencies) are updated.
812 Trivial small fix in default niceness level of @command{nncp-file}
813 and @command{nncp-freq} commands.
821 Small fix in @command{nncp-call}, @command{nncp-caller},
822 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
826 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
827 and more convenient to use.
830 @command{nncp-mincfg} command appeared: helper allowing to create
831 minimalistic stripped down configuration file without private keys, that
832 is useful during @command{nncp-xfer} usage.
839 @item Fixed compatibility with Go 1.6.
847 @strong{Incompatible} packet's format change (magic number is changed
848 too): size field is encrypted and is not send in plaintext anymore.
851 @option{-minsize} option gives ability to automatically pad outgoing
852 packets to specified minimal size.
855 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
856 always check new @emph{tx} packets appearance in the background while
857 connected. Remote side is immediately notified.
860 @option{-onlinedeadline} option gives ability to configure timeout of
861 inactivity of online connection, when it could be disconnected. It could
862 be used to keep connection alive for a long time.
865 @option{-maxonlinetime} option gives ability to set maximal allowable
866 online connection aliveness time.
869 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
872 @command{nncp-pkt} command can decompress the data.