4 See also this page @ref{Новости, on russian}.
7 * Release 7.2.0: Release 7_2_0.
8 * Release 7.1.1: Release 7_1_1.
9 * Release 7.1.0: Release 7_1_0.
10 * Release 7.0.0: Release 7_0_0.
11 * Release 6.6.0: Release 6_6_0.
12 * Release 6.5.0: Release 6_5_0.
13 * Release 6.4.0: Release 6_4_0.
14 * Release 6.3.0: Release 6_3_0.
15 * Release 6.2.1: Release 6_2_1.
16 * Release 6.2.0: Release 6_2_0.
17 * Release 6.1.0: Release 6_1_0.
18 * Release 6.0.0: Release 6_0_0.
19 * Release 5.6.0: Release 5_6_0.
20 * Release 5.5.1: Release 5_5_1.
21 * Release 5.5.0: Release 5_5_0.
22 * Release 5.4.1: Release 5_4_1.
23 * Release 5.4.0: Release 5_4_0.
24 * Release 5.3.3: Release 5_3_3.
25 * Release 5.3.2: Release 5_3_2.
26 * Release 5.3.1: Release 5_3_1.
27 * Release 5.3.0: Release 5_3_0.
28 * Release 5.2.1: Release 5_2_1.
29 * Release 5.2.0: Release 5_2_0.
30 * Release 5.1.2: Release 5_1_2.
31 * Release 5.1.1: Release 5_1_1.
32 * Release 5.1.0: Release 5_1_0.
33 * Release 5.0.0: Release 5_0_0.
34 * Release 4.1: Release 4_1.
35 * Release 4.0: Release 4_0.
36 * Release 3.4: Release 3_4.
37 * Release 3.3: Release 3_3.
38 * Release 3.2: Release 3_2.
39 * Release 3.1: Release 3_1.
40 * Release 3.0: Release 3_0.
41 * Release 2.0: Release 2_0.
42 * Release 1.0: Release 1_0.
43 * Release 0.12: Release 0_12.
44 * Release 0.11: Release 0_11.
45 * Release 0.10: Release 0_10.
46 * Release 0.9: Release 0_9.
47 * Release 0.8: Release 0_8.
48 * Release 0.7: Release 0_7.
49 * Release 0.6: Release 0_6.
50 * Release 0.5: Release 0_5.
51 * Release 0.4: Release 0_4.
52 * Release 0.3: Release 0_3.
53 * Release 0.2: Release 0_2.
57 @section Release 7.2.0
61 @command{nncp-trns} command appeared for manual transition packets creation.
64 If destination node of transitional packet has non empty @option{via}
65 route, then do not ignore, but use it.
68 Do not relay multicast packet to area message's originator, that
69 obviously has seen its own packet.
72 Much less memory usage during MTH hashing when offset is zero: when
73 packet is not resumed, but for example checked with @command{nncp-check}
79 @section Release 7.1.1
83 Fixed failing directories fsync after @file{.seen} file creation.
88 @section Release 7.1.0
92 Multicasting areas feature appeared. Implemented merely by an additional
93 plain packet type with @command{nncp-toss}, @command{nncp-file} and
94 @command{nncp-exec} commands modification.
97 Fixed workability of @command{nncp-file} and @command{nncp-exec}
98 commands, that use temporary file (stdin and @option{-use-tmp}).
101 Fixed disappearing bad return code in @command{nncp-exec} command.
104 Fixed invalid @file{.hdr} generation when transitional packets are used.
107 @option{-all} option appeared in @command{nncp-rm} command, applying to
108 all the nodes at once.
111 @option{-cycle} option appeared in @command{nncp-check} command, looping
112 the check in infinite cycle.
115 @command{nncp-rm} command can take node alias name.
118 @command{nncp-pkt} can parse @file{.hdr} files.
123 @section Release 7.0.0
127 Minimal required Go version 1.13.
130 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
131 Because of that, there are backward @strong{incompatible} changes of
132 encrypted files (everything laying in the spool directory) and
133 @file{.meta} files of chunked transfer.
135 Current implementation is far from being optimal: it lacks
136 parallelizable calculations and has higher memory consumption: nearly
137 512 KiB for each 1 GiB of file's data. Future performance and memory
138 size optimizations should not lead to packet's format change. But it is
139 still several times faster than BLAKE2b.
142 Resumed online downloads, because of MTH, require reading only of the
143 preceding part of file, not the whole one as was before.
146 @command{nncp-hash} utility appeared for calculating file's MTH hash.
149 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
150 packets. Lowering number of used primitives. Also, its encrypted
151 packet's header is used as an associated data during encryption.
154 MultiCast Discovery uses
155 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
158 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
161 @command{nncp-stat} reports about partly downloaded packets.
164 Updated dependencies.
169 @section Release 6.6.0
173 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
174 commands wait for all background checksummers completion after
175 connection is finished.
178 Added possibility of address determining through multicast announcement
179 in local area network, so called MCD (MultiCast Discovery).
184 @section Release 6.5.0
188 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
191 Fixed possible bad return code ignoring in automatic tosser.
194 Fixed race during file descriptors closing when online protocol call is
195 finished, that could lead to write error of received packet fragment.
198 Kill all packet transmission progress bars in @command{nncp-daemon},
199 @command{nncp-call} and @command{nncp-caller} when call is finished.
204 @section Release 6.4.0
208 Fixed possible race in online protocol, that lead to panic.
213 @section Release 6.3.0
217 Fixed possible panic while showing progress during online protocol.
222 @section Release 6.2.1
226 Three places in logs contained excess @code{%s}.
231 @section Release 6.2.0
235 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
238 Yet another logging refactoring and simplification.
239 Should be no visible differences to the end user.
244 @section Release 6.1.0
248 Optimization: most commands do not keep opened file descriptors now.
249 Previously you can exceed maximal number of opened files if you have got
250 many packets in the spool directory.
253 Optimization: do not close file descriptor of the file we download
254 online. Previously each chunk lead to expensive open/close calls.
257 Online downloaded files are saved with @file{.nock} (non-checksummed)
258 suffix, waiting either for @command{nncp-check}, or online daemons to
259 perform integrity check.
262 Optimization: files, that are not resumed, are checksummed immediately
263 during the online download, skipping @file{.nock}-intermediate step.
266 Ability to store encrypted packet's header in @file{.hdr} file, close to
267 the packet itself. That can greatly increase performance of packets
268 listing on filesystems with big block's size.
273 @section Release 6.0.0
277 Log uses human readable and easy machine parseable
278 @url{https://www.gnu.org/software/recutils/, recfile} format for the
279 records, instead of structured RFC 3339 lines. Old logs are not readable
280 by @command{nncp-log} anymore.
283 @option{-autotoss*} option workability with @command{nncp-daemon}'s
284 @option{-inetd} mode.
287 Call's @option{when-tx-exists} allows to make a call only when outbound
288 packets exists. Combined with seconds-aware cron expression that can be
289 used as some kind of auto dialler.
292 @command{nncp-cronexpr} command allows you to check validity and
293 expectations of specified cron expression.
298 @section Release 5.6.0
302 @option{-autotoss*} option runs tosser not after the call, but every
303 second while it is active.
306 @option{autotoss}, @option{autotoss-doseen},
307 @option{autotoss-nofile}, @option{autotoss-nofreq},
308 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
309 @option{calls} configuration section. You can configure per-call
310 automatic tosser options.
313 Use vendoring, instead of @env{GOPATH} overriding during tarball
314 installation, because current minimal Go's version is 1.12 and it
320 @section Release 5.5.1
324 Respect for @env{BINDIR}, @env{INFODIR} and @env{DOCDIR} environment
325 variables in @file{config} during installation.
330 @section Release 5.5.0
334 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
335 @command{nncp-bundle} and @command{nncp-stat}.
338 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
341 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
342 options now. Uncompressed packets are not compatible with previous NNCP
346 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
347 have @option{-autotoss*} options for running tosser after call is ended.
350 Updated dependencies. Minimal required Go version is 1.12.
355 @section Release 5.4.1
359 Fixed @code{SENDMAIL} variable usage during the build.
364 @section Release 5.4.0
368 Updated dependencies.
371 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
372 This should not influence package maintainers, because minimal @command{redo}
373 implementation is included in tarball.
378 @section Release 5.3.3
382 More various error checks.
385 Updated dependencies.
390 @section Release 5.3.2
394 Fixed incorrect logic of @option{onlinedeadline} timeout, where
395 connection won't take into account incoming packets events and will
396 forcefully disconnect.
401 @section Release 5.3.1
405 Fixed @option{onlinedeadline} workability with call addresses that use
406 external commands (@verb{#"|somecmd"#}).
409 @command{nncp-stat} has @option{-pkt} option displaying information
410 about each packet in the spool.
415 @section Release 5.3.0
419 Progress messages contain prefix, describing the running action.
422 Fixed not occurring handshake messages padding.
425 Finish all SP protocol related goroutines, less memory leak.
428 SP protocol generates less socket write calls, thus generating less TCP
432 Check @option{onlinedeadline} and @option{maxonlinetime} options every
433 second, independently from socket reads (up to 10 seconds).
436 Once per minute, if no other traffic exists, PING packets are sent in
437 SP-connection. That allows faster determining of connection unworkability.
440 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
445 @section Release 5.2.1
449 Fixed SP protocol error handling, sometimes causing program panic.
454 @section Release 5.2.0
458 Most commands by default show oneline operations progress.
459 @option{-progress}, @option{-noprogress} command line options,
460 @option{noprogress} configuration file option appeared.
463 Fixed incorrect @command{nncp-check} command return code, that returned
464 bad code when everything is good.
467 Free disk space check during @command{nncp-bundle -rx} call.
472 @section Release 5.1.2
476 @strong{Critical} vulnerability: remote peers authentication could lead
477 to incorrect identification of remote side, allowing foreign encrypted
481 Bugfix: private and public Noise keys were swapped in newly created
482 configuration files, that lead to inability to authenticate online peers.
485 Explicit directories fsync-ing for guaranteed files renaming.
490 @section Release 5.1.1
494 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
499 @section Release 5.1.0
503 @command{nncp-file} can send directories, automatically creating pax
507 Free disk space is checked during outbound packets creation.
510 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
511 file options replaced with the structure:
512 @option{freq: @{path: ..., minsize: ..., chunked: ...@}}.
515 Added @option{freq.maxsize} configuration file option, forbidding of
516 freq sending larger than specified size.
519 Ability to notify about successfully executed commands (exec) with
520 @option{notify.exec} configuration file option.
525 @section Release 5.0.0
529 @strong{Incompatible} configuration file format change: YAML is
530 replaced with Hjson, due to its simplicity, without noticeable lack
531 of either functionality or convenience.
534 @strong{Incompatible} plain packet format changes. Older versions are
535 not supported. @code{zlib} compression is replaced with
536 @code{Zstandard}, due to its speed and efficiency, despite library
537 version is not mature enough.
540 Ability to call remote nodes via pipe call of external command, not only
544 @command{nncp-cfgnew} generates configuration file with many
545 comments. @option{-nocomments} option can be used for an old
549 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
550 avoid possible collisions with @file{.nncp.chunkCTR}.
553 Ability to override process umask through configuration file option.
556 Files and directories are created with 666/777 permissions by default,
557 allowing control with @command{umask}.
560 Updated dependencies.
563 Full usage of go modules for dependencies management
564 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
567 Forbid any later GNU GPL version autousage
568 (project's licence now is GNU GPLv3-only).
575 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
583 @strong{Incompatible} encrypted and eblob packet format change: AEAD
584 encryption mode with 128 KiB blocks is used now, because previously
585 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
586 decrypted data to external command. Older versions are not supported.
589 Available free space checking before copying in @command{nncp-xfer},
590 @command{nncp-daemon}, @command{nncp-call(er)}.
593 @command{nncp-call} has ability only to list packets on remote node,
594 without their transmission.
597 @command{nncp-call} has ability to transfer only specified packets.
600 Workability of @option{xxrate} preference in @option{calls}
601 configuration file section.
604 Dependant libraries are updated.
610 Begin using of @code{go.mod} subsystem.
617 @item @command{nncp-daemon} can be run as @command{inetd}-service.
625 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
626 if @file{.seen} exists and treat it like file was already downloaded.
627 Possibly it was transferred out-of-bound and remote side needs to be
631 If higher priority packet is spooled, then @command{nncp-daemon} will
632 queue its sending first, interrupting lower priority transmissions.
635 Simple packet rate limiter added to online-related tools
636 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
639 Ability to specify niceness with symbolic notation:
640 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
643 Changed default niceness levels:
644 for @command{nncp-exec} from 64 to 96,
645 for @command{nncp-freq} from 64 to 160,
646 for @command{nncp-file} from 196 to 224.
654 @strong{Incompatible} @emph{bundle} archive format changes and
655 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
656 valid tar archives, but Go 1.9 made them invalid because of long paths
657 inside. NNCP accidentally was dependant on that bug. Explicit adding of
658 @file{NNCP/} directory in archive restores workability with valid tar
666 Ability to disable relaying at all using @verb{|-via -|} command line option.
674 @strong{Incompatible} plain packet format changes. Older versions are
678 Ability to queue remote command execution, by configuring @option{exec}
679 option in configuration file and using @command{nncp-exec} command:
682 @command{nncp-mail} command is replaced with more flexible
683 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
684 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
686 @option{sendmail} configuration file option is replaced with
687 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
688 @verb{|exec: sendmail: [...]|}.
692 Ability to override @option{via} configuration option for destination
693 node via @option{-via} command line option for following commands:
694 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
697 Chunked files, having size less than specified chunk size, will be sent
698 as an ordinary single file.
701 Exec commands are invoked with additional @env{NNCP_NICE} and
702 @env{NNCP_SELF} environment variables.
705 Files, that are sent as a reply to freq, have niceness level taken from
706 the freq packet. You can set desired niceness during @command{nncp-freq}
707 invocation using @option{-replynice} option.
710 @command{nncp-toss} command can ignore specified packet types during
711 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
715 @command{nncp-file} command uses
716 @option{FreqMinSize}/@option{FreqChunked} configuration file options
717 for @option{-minsize}/@option{-chunked} by default. You can turn this
718 off by specifying zero value.
727 @strong{Incompatible} encrypted/eblob packet format changes. Older
728 versions are not supported.
731 Twofish encryption algorithm is replaced with ChaCha20. It is much more
732 faster. One cryptographic primitive less.
735 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
736 another cryptographic primitive less (assuming that BLAKE2X is nearly
737 identical to BLAKE2).
746 @strong{Incompatible} encrypted packet format changes. Older versions
750 @command{nncp-bundle} command can either create stream of encrypted
751 packets, or digest it. It is useful when dealing with
752 @code{stdin}/@code{stdout} based transmission methods (like writing to
753 CD-ROM without intermediate prepared ISO image and working with tape
757 @command{nncp-toss} is able to create @file{.seen} files preventing
758 duplicate packets receiving.
761 Single background checksum verifier worker is allowed in
762 @command{nncp-call}. This is helpful when thousands of small inbound
763 packets could create many goroutines.
766 Ability to override path to spool directory and logfile through either
767 command line argument, or environment variable.
770 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
771 @file{.part}, @file{.lock} and temporary files.
776 @section Release 0.12
778 @item Sendmail command is called with @env{NNCP_SENDER} environment variable.
782 @section Release 0.11
784 @item @command{nncp-stat}'s command output is sorted by node name.
788 @section Release 0.10
791 @command{nncp-freq}'s @file{DST} argument is optional now. Last
792 @file{SRC} path's element will be used by default.
799 Fix @option{-rx}/@option{-tx} arguments processing in
800 @command{nncp-call} command. They were ignored.
807 Little bugfix in @command{nncp-file} command, where @option{-minsize}
808 option for unchunked transfer was not in KiBs, but in bytes.
816 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
817 encrypted temporary file for that.
820 Chunked files transmission appeared with corresponding
821 @command{nncp-reass} command and @option{freqchunked} configuration file
822 entry. Useful for transferring big files over small storage devices.
825 @option{freqminsize} configuration file option, analogue to
826 @option{-minsize} one.
829 @command{nncp-xfer}'s @option{-force} option is renamed to
830 @option{-mkdir} for clarity.
833 @option{-minsize} option is specified in KiBs, not bytes, for
837 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
838 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
839 common prefix and are grouped together for convenience.
842 @command{nncp-cfgenc} command appeared, allowing configuration file
843 encryption/decryption, for keeping it safe without any either OpenPGP or
847 Cryptographic libraries (dependencies) are updated.
854 @item Small @command{nncp-rm} command appeared.
855 @item Cryptographic libraries (dependencies) are updated.
862 Trivial small fix in default niceness level of @command{nncp-file}
863 and @command{nncp-freq} commands.
871 Small fix in @command{nncp-call}, @command{nncp-caller},
872 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
876 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
877 and more convenient to use.
880 @command{nncp-mincfg} command appeared: helper allowing to create
881 minimalistic stripped down configuration file without private keys, that
882 is useful during @command{nncp-xfer} usage.
889 @item Fixed compatibility with Go 1.6.
897 @strong{Incompatible} packet's format change (magic number is changed
898 too): size field is encrypted and is not send in plaintext anymore.
901 @option{-minsize} option gives ability to automatically pad outgoing
902 packets to specified minimal size.
905 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
906 always check new @emph{tx} packets appearance in the background while
907 connected. Remote side is immediately notified.
910 @option{-onlinedeadline} option gives ability to configure timeout of
911 inactivity of online connection, when it could be disconnected. It could
912 be used to keep connection alive for a long time.
915 @option{-maxonlinetime} option gives ability to set maximal allowable
916 online connection aliveness time.
919 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
922 @command{nncp-pkt} command can decompress the data.