4 See also this page @ref{Новости, on russian}.
11 @command{nncp-cfgdir} does not require @code{self} section existence in
17 @section Release 8.0.2
21 Fixed sending ability to areas.
26 @section Release 8.0.1
30 Fixed incorrect @code{freq.chunked} value calculation. If it missed,
31 then anyway chunked transfer mode was forcefully turned on.
34 Fixed incorrect full file's size calculation in @file{.nncp.meta}.
39 @section Release 8.0.0
43 @strong{Incompatible} encrypted packet format change: payload and pad
44 sizes are sent in-bound in the encrypted stream. That gives ability to
45 streamingly create encrypted packets, without knowing sizes in advance,
46 without creating temporary file or buffer data in memory.
49 Proper encrypted packet padding verification is done now. This is not
50 critical issue, but previously neither padding value, nor its size were
51 authenticated, giving ability to iteratively strip trailing bytes and
52 determine payload's size by observing the reaction of the encrypted
56 @command{nncp-exec} loses its @option{-use-tmp} option, because of
57 streaming-compatible encrypted packets format.
60 @command{nncp-file} and @command{nncp-exec} commands have
61 @option{-maxsize} option, limiting maximal resulting encrypted packet's
62 maximal size (returning error if it is exceeded). Could be useful,
63 because no payload size could be known in advance.
68 @section Release 7.7.0
72 Experimental @code{kqueue} and @code{inotify} based notifications
73 support about spool directory changes, for reducing their often reading
77 @file{.seen} and @file{.hdr} files moved to @file{seen/} and @file{hdr/}
78 subdirectories, for faster scanning of spool directories.
79 Current files migration required:
82 $ find $NNCPSPOOL -type f -name "*.hdr" -exec rm @{@} +
84 $ find $NNCPSPOOL -type d -name rx | while read rx ; do
87 find . -type f -name "*.seen" | while read fn ; do
88 mv $fn seen/$@{fn%.seen@}
92 $ find $NNCPSPOOL -type d -name area | while read area ; do
93 find $area -type f -name "*.seen" | while read fn ; do
102 @section Release 7.6.0
106 Logging may be done to specified opened file descriptor
107 (@env{$NNCPLOG=FD:5} for example).
108 That is friendly to use under @command{daemontools}.
111 Added additional checks of public keys existence in configuration file,
112 preventing some commands from failing.
117 @section Release 7.5.1
121 NNCP builds on NetBSD.
126 @section Release 7.5.0
130 @command{nncp-daemon} is compatible with UCSPI-TCP interface, so log
131 will contain remote side's address (when running under appropriate
132 utility). @option{-ucspi} option should be used instead of @option{-inetd}.
135 @command{nncp-call} can be UCSPI-TCP client, using @option{-ucspi} option.
138 Do not exit if some of MCD network interfaces can not be listened --
139 only warn about that.
144 @section Release 7.4.0
148 Fixed simultaneous @command{nncp-daemon} and @command{nncp-caller} MCD work.
153 @section Release 7.3.2
157 @command{hjson-cli} utility builds in vendor-mode now.
162 @section Release 7.3.1
166 Fixed possibly left opened file descriptor in online commands.
169 Severely decreased memory usage of MTH hashing.
174 @section Release 7.3.0
178 Fixed some workability problems on 32-bit systems with big files.
181 Ability to use directory with a bunch of files as a configuration.
182 @command{nncp-cfgdir} command appeared.
187 @section Release 7.2.1
191 Small optimizations in online commands.
196 @section Release 7.2.0
200 @command{nncp-trns} command appeared for manual transition packets creation.
203 If destination node of transitional packet has non empty @option{via}
204 route, then do not ignore, but use it.
207 Do not relay multicast packet to area message's originator, that
208 obviously has seen its own packet.
211 Much less memory usage during MTH hashing when offset is zero: when
212 packet is not resumed, but for example checked with @command{nncp-check}
218 @section Release 7.1.1
222 Fixed failing directories fsync after @file{.seen} file creation.
227 @section Release 7.1.0
231 Multicasting areas feature appeared. Implemented merely by an additional
232 plain packet type with @command{nncp-toss}, @command{nncp-file} and
233 @command{nncp-exec} commands modification.
236 Fixed workability of @command{nncp-file} and @command{nncp-exec}
237 commands, that use temporary file (stdin and @option{-use-tmp}).
240 Fixed disappearing bad return code in @command{nncp-exec} command.
243 Fixed invalid @file{.hdr} generation when transitional packets are used.
246 @option{-all} option appeared in @command{nncp-rm} command, applying to
247 all the nodes at once.
250 @option{-cycle} option appeared in @command{nncp-check} command, looping
251 the check in infinite cycle.
254 @command{nncp-rm} command can take node alias name.
257 @command{nncp-pkt} can parse @file{.hdr} files.
262 @section Release 7.0.0
266 Minimal required Go version 1.13.
269 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
270 Because of that, there are backward @strong{incompatible} changes of
271 encrypted files (everything laying in the spool directory) and
272 @file{.meta} files of chunked transfer.
274 Current implementation is far from being optimal: it lacks
275 parallelizable calculations and has higher memory consumption: nearly
276 512 KiB for each 1 GiB of file's data. Future performance and memory
277 size optimizations should not lead to packet's format change. But it is
278 still several times faster than BLAKE2b.
281 Resumed online downloads, because of MTH, require reading only of the
282 preceding part of file, not the whole one as was before.
285 @command{nncp-hash} utility appeared for calculating file's MTH hash.
288 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
289 packets. Lowering number of used primitives. Also, its encrypted
290 packet's header is used as an associated data during encryption.
293 MultiCast Discovery uses
294 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
297 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
300 @command{nncp-stat} reports about partly downloaded packets.
303 Updated dependencies.
308 @section Release 6.6.0
312 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
313 commands wait for all background checksummers completion after
314 connection is finished.
317 Added possibility of address determining through multicast announcement
318 in local area network, so called MCD (MultiCast Discovery).
323 @section Release 6.5.0
327 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
330 Fixed possible bad return code ignoring in automatic tosser.
333 Fixed race during file descriptors closing when online protocol call is
334 finished, that could lead to write error of received packet fragment.
337 Kill all packet transmission progress bars in @command{nncp-daemon},
338 @command{nncp-call} and @command{nncp-caller} when call is finished.
343 @section Release 6.4.0
347 Fixed possible race in online protocol, that lead to panic.
352 @section Release 6.3.0
356 Fixed possible panic while showing progress during online protocol.
361 @section Release 6.2.1
365 Three places in logs contained excess @code{%s}.
370 @section Release 6.2.0
374 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
377 Yet another logging refactoring and simplification.
378 Should be no visible differences to the end user.
383 @section Release 6.1.0
387 Optimization: most commands do not keep opened file descriptors now.
388 Previously you can exceed maximal number of opened files if you have got
389 many packets in the spool directory.
392 Optimization: do not close file descriptor of the file we download
393 online. Previously each chunk lead to expensive open/close calls.
396 Online downloaded files are saved with @file{.nock} (non-checksummed)
397 suffix, waiting either for @command{nncp-check}, or online daemons to
398 perform integrity check.
401 Optimization: files, that are not resumed, are checksummed immediately
402 during the online download, skipping @file{.nock}-intermediate step.
405 Ability to store encrypted packet's header in @file{.hdr} file, close to
406 the packet itself. That can greatly increase performance of packets
407 listing on filesystems with big block's size.
412 @section Release 6.0.0
416 Log uses human readable and easy machine parseable
417 @url{https://www.gnu.org/software/recutils/, recfile} format for the
418 records, instead of structured RFC 3339 lines. Old logs are not readable
419 by @command{nncp-log} anymore.
422 @option{-autotoss*} option workability with @command{nncp-daemon}'s
423 @option{-inetd} mode.
426 Call's @option{when-tx-exists} allows to make a call only when outbound
427 packets exists. Combined with seconds-aware cron expression that can be
428 used as some kind of auto dialler.
431 @command{nncp-cronexpr} command allows you to check validity and
432 expectations of specified cron expression.
437 @section Release 5.6.0
441 @option{-autotoss*} option runs tosser not after the call, but every
442 second while it is active.
445 @option{autotoss}, @option{autotoss-doseen},
446 @option{autotoss-nofile}, @option{autotoss-nofreq},
447 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
448 @option{calls} configuration section. You can configure per-call
449 automatic tosser options.
452 Use vendoring, instead of @env{$GOPATH} overriding during tarball
453 installation, because current minimal Go's version is 1.12 and it
459 @section Release 5.5.1
463 Respect for @env{$BINDIR}, @env{$INFODIR} and @env{$DOCDIR} environment
464 variables in @file{config} during installation.
469 @section Release 5.5.0
473 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
474 @command{nncp-bundle} and @command{nncp-stat}.
477 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
480 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
481 options now. Uncompressed packets are not compatible with previous NNCP
485 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
486 have @option{-autotoss*} options for running tosser after call is ended.
489 Updated dependencies. Minimal required Go version is 1.12.
494 @section Release 5.4.1
498 Fixed @code{SENDMAIL} variable usage during the build.
503 @section Release 5.4.0
507 Updated dependencies.
510 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
511 This should not influence package maintainers, because minimal @command{redo}
512 implementation is included in tarball.
517 @section Release 5.3.3
521 More various error checks.
524 Updated dependencies.
529 @section Release 5.3.2
533 Fixed incorrect logic of @option{onlinedeadline} timeout, where
534 connection won't take into account incoming packets events and will
535 forcefully disconnect.
540 @section Release 5.3.1
544 Fixed @option{onlinedeadline} workability with call addresses that use
545 external commands (@verb{#"|somecmd"#}).
548 @command{nncp-stat} has @option{-pkt} option displaying information
549 about each packet in the spool.
554 @section Release 5.3.0
558 Progress messages contain prefix, describing the running action.
561 Fixed not occurring handshake messages padding.
564 Finish all SP protocol related goroutines, less memory leak.
567 SP protocol generates less socket write calls, thus generating less TCP
571 Check @option{onlinedeadline} and @option{maxonlinetime} options every
572 second, independently from socket reads (up to 10 seconds).
575 Once per minute, if no other traffic exists, PING packets are sent in
576 SP-connection. That allows faster determining of connection unworkability.
579 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
584 @section Release 5.2.1
588 Fixed SP protocol error handling, sometimes causing program panic.
593 @section Release 5.2.0
597 Most commands by default show oneline operations progress.
598 @option{-progress}, @option{-noprogress} command line options,
599 @option{noprogress} configuration file option appeared.
602 Fixed incorrect @command{nncp-check} command return code, that returned
603 bad code when everything is good.
606 Free disk space check during @command{nncp-bundle -rx} call.
611 @section Release 5.1.2
615 @strong{Critical} vulnerability: remote peers authentication could lead
616 to incorrect identification of remote side, allowing foreign encrypted
620 Bugfix: private and public Noise keys were swapped in newly created
621 configuration files, that lead to inability to authenticate online peers.
624 Explicit directories fsync-ing for guaranteed files renaming.
629 @section Release 5.1.1
633 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
638 @section Release 5.1.0
642 @command{nncp-file} can send directories, automatically creating pax
646 Free disk space is checked during outbound packets creation.
649 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
650 file options replaced with the structure:
651 @option{freq: @{path: @dots{}, minsize: @dots{}, chunked: @dots{}@}}.
654 Added @option{freq.maxsize} configuration file option, forbidding of
655 freq sending larger than specified size.
658 Ability to notify about successfully executed commands (exec) with
659 @option{notify.exec} configuration file option.
664 @section Release 5.0.0
668 @strong{Incompatible} configuration file format change: YAML is
669 replaced with Hjson, due to its simplicity, without noticeable lack
670 of either functionality or convenience.
673 @strong{Incompatible} plain packet format changes. Older versions are
674 not supported. @code{zlib} compression is replaced with
675 @code{Zstandard}, due to its speed and efficiency, despite library
676 version is not mature enough.
679 Ability to call remote nodes via pipe call of external command, not only
683 @command{nncp-cfgnew} generates configuration file with many
684 comments. @option{-nocomments} option can be used for an old
688 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
689 avoid possible collisions with @file{.nncp.chunkCTR}.
692 Ability to override process umask through configuration file option.
695 Files and directories are created with 666/777 permissions by default,
696 allowing control with @command{umask}.
699 Updated dependencies.
702 Full usage of go modules for dependencies management
703 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
706 Forbid any later GNU GPL version autousage
707 (project's licence now is GNU GPLv3-only).
714 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
722 @strong{Incompatible} encrypted and eblob packet format change: AEAD
723 encryption mode with 128 KiB blocks is used now, because previously
724 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
725 decrypted data to external command. Older versions are not supported.
728 Available free space checking before copying in @command{nncp-xfer},
729 @command{nncp-daemon}, @command{nncp-call(er)}.
732 @command{nncp-call} has ability only to list packets on remote node,
733 without their transmission.
736 @command{nncp-call} has ability to transfer only specified packets.
739 Workability of @option{xxrate} preference in @option{calls}
740 configuration file section.
743 Dependant libraries are updated.
749 Begin using of @code{go.mod} subsystem.
756 @item @command{nncp-daemon} can be run as @command{inetd}-service.
764 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
765 if @file{.seen} exists and treat it like file was already downloaded.
766 Possibly it was transferred out-of-bound and remote side needs to be
770 If higher priority packet is spooled, then @command{nncp-daemon} will
771 queue its sending first, interrupting lower priority transmissions.
774 Simple packet rate limiter added to online-related tools
775 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
778 Ability to specify niceness with symbolic notation:
779 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
782 Changed default niceness levels:
783 for @command{nncp-exec} from 64 to 96,
784 for @command{nncp-freq} from 64 to 160,
785 for @command{nncp-file} from 196 to 224.
793 @strong{Incompatible} @emph{bundle} archive format changes and
794 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
795 valid tar archives, but Go 1.9 made them invalid because of long paths
796 inside. NNCP accidentally was dependant on that bug. Explicit adding of
797 @file{NNCP/} directory in archive restores workability with valid tar
805 Ability to disable relaying at all using @verb{|-via -|} command line option.
813 @strong{Incompatible} plain packet format changes. Older versions are
817 Ability to queue remote command execution, by configuring @option{exec}
818 option in configuration file and using @command{nncp-exec} command:
821 @command{nncp-mail} command is replaced with more flexible
822 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
823 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
825 @option{sendmail} configuration file option is replaced with
826 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
827 @verb{|exec: sendmail: [...]|}.
831 Ability to override @option{via} configuration option for destination
832 node via @option{-via} command line option for following commands:
833 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
836 Chunked files, having size less than specified chunk size, will be sent
837 as an ordinary single file.
840 Exec commands are invoked with additional @env{$NNCP_NICE} and
841 @env{$NNCP_SELF} environment variables.
844 Files, that are sent as a reply to freq, have niceness level taken from
845 the freq packet. You can set desired niceness during @command{nncp-freq}
846 invocation using @option{-replynice} option.
849 @command{nncp-toss} command can ignore specified packet types during
850 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
854 @command{nncp-file} command uses
855 @option{FreqMinSize}/@option{FreqChunked} configuration file options
856 for @option{-minsize}/@option{-chunked} by default. You can turn this
857 off by specifying zero value.
866 @strong{Incompatible} encrypted/eblob packet format changes. Older
867 versions are not supported.
870 Twofish encryption algorithm is replaced with ChaCha20. It is much more
871 faster. One cryptographic primitive less.
874 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
875 another cryptographic primitive less (assuming that BLAKE2X is nearly
876 identical to BLAKE2).
885 @strong{Incompatible} encrypted packet format changes. Older versions
889 @command{nncp-bundle} command can either create stream of encrypted
890 packets, or digest it. It is useful when dealing with
891 @code{stdin}/@code{stdout} based transmission methods (like writing to
892 CD-ROM without intermediate prepared ISO image and working with tape
896 @command{nncp-toss} is able to create @file{.seen} files preventing
897 duplicate packets receiving.
900 Single background checksum verifier worker is allowed in
901 @command{nncp-call}. This is helpful when thousands of small inbound
902 packets could create many goroutines.
905 Ability to override path to spool directory and logfile through either
906 command line argument, or environment variable.
909 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
910 @file{.part}, @file{.lock} and temporary files.
915 @section Release 0.12
917 @item Sendmail command is called with @env{$NNCP_SENDER} environment variable.
921 @section Release 0.11
923 @item @command{nncp-stat}'s command output is sorted by node name.
927 @section Release 0.10
930 @command{nncp-freq}'s @file{DST} argument is optional now. Last
931 @file{SRC} path's element will be used by default.
938 Fix @option{-rx}/@option{-tx} arguments processing in
939 @command{nncp-call} command. They were ignored.
946 Little bugfix in @command{nncp-file} command, where @option{-minsize}
947 option for unchunked transfer was not in KiBs, but in bytes.
955 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
956 encrypted temporary file for that.
959 Chunked files transmission appeared with corresponding
960 @command{nncp-reass} command and @option{freqchunked} configuration file
961 entry. Useful for transferring big files over small storage devices.
964 @option{freqminsize} configuration file option, analogue to
965 @option{-minsize} one.
968 @command{nncp-xfer}'s @option{-force} option is renamed to
969 @option{-mkdir} for clarity.
972 @option{-minsize} option is specified in KiBs, not bytes, for
976 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
977 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
978 common prefix and are grouped together for convenience.
981 @command{nncp-cfgenc} command appeared, allowing configuration file
982 encryption/decryption, for keeping it safe without any either OpenPGP or
986 Cryptographic libraries (dependencies) are updated.
993 @item Small @command{nncp-rm} command appeared.
994 @item Cryptographic libraries (dependencies) are updated.
1001 Trivial small fix in default niceness level of @command{nncp-file}
1002 and @command{nncp-freq} commands.
1006 @section Release 0.4
1010 Small fix in @command{nncp-call}, @command{nncp-caller},
1011 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
1015 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
1016 and more convenient to use.
1019 @command{nncp-mincfg} command appeared: helper allowing to create
1020 minimalistic stripped down configuration file without private keys, that
1021 is useful during @command{nncp-xfer} usage.
1026 @section Release 0.3
1028 @item Fixed compatibility with Go 1.6.
1032 @section Release 0.2
1036 @strong{Incompatible} packet's format change (magic number is changed
1037 too): size field is encrypted and is not send in plaintext anymore.
1040 @option{-minsize} option gives ability to automatically pad outgoing
1041 packets to specified minimal size.
1044 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
1045 always check new @emph{tx} packets appearance in the background while
1046 connected. Remote side is immediately notified.
1049 @option{-onlinedeadline} option gives ability to configure timeout of
1050 inactivity of online connection, when it could be disconnected. It could
1051 be used to keep connection alive for a long time.
1054 @option{-maxonlinetime} option gives ability to set maximal allowable
1055 online connection aliveness time.
1058 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
1061 @command{nncp-pkt} command can decompress the data.