4 See also this page @ref{Новости, on russian}.
11 Fixed failing directories fsync after @file{.seen} file creation.
15 @section Release 7.1.0
19 Multicasting areas feature appeared. Implemented merely by an additional
20 plain packet type with @command{nncp-toss}, @command{nncp-file} and
21 @command{nncp-exec} commands modification.
24 Fixed workability of @command{nncp-file} and @command{nncp-exec}
25 commands, that use temporary file (stdin and @option{-use-tmp}).
28 Fixed disappearing bad return code in @command{nncp-exec} command.
31 Fixed invalid @file{.hdr} generation when transitional packets are used.
34 @option{-all} option appeared in @command{nncp-rm} command, applying to
35 all the nodes at once.
38 @option{-cycle} option appeared in @command{nncp-check} command, looping
39 the check in infinite cycle.
42 @command{nncp-rm} command can take node alias name.
45 @command{nncp-pkt} can parse @file{.hdr} files.
50 @section Release 7.0.0
54 Minimal required Go version 1.13.
57 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
58 Because of that, there are backward @strong{incompatible} changes of
59 encrypted files (everything laying in the spool directory) and
60 @file{.meta} files of chunked transfer.
62 Current implementation is far from being optimal: it lacks
63 parallelizable calculations and has higher memory consumption: nearly
64 512 KiB for each 1 GiB of file's data. Future performance and memory
65 size optimizations should not lead to packet's format change. But it is
66 still several times faster than BLAKE2b.
69 Resumed online downloads, because of MTH, require reading only of the
70 preceding part of file, not the whole one as was before.
73 @command{nncp-hash} utility appeared for calculating file's MTH hash.
76 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
77 packets. Lowering number of used primitives. Also, its encrypted
78 packet's header is used as an associated data during encryption.
81 MultiCast Discovery uses
82 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
85 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
88 @command{nncp-stat} reports about partly downloaded packets.
96 @section Release 6.6.0
100 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
101 commands wait for all background checksummers completion after
102 connection is finished.
105 Added possibility of address determining through multicast announcement
106 in local area network, so called MCD (MultiCast Discovery).
111 @section Release 6.5.0
115 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
118 Fixed possible bad return code ignoring in automatic tosser.
121 Fixed race during file descriptors closing when online protocol call is
122 finished, that could lead to write error of received packet fragment.
125 Kill all packet transmission progress bars in @command{nncp-daemon},
126 @command{nncp-call} and @command{nncp-caller} when call is finished.
131 @section Release 6.4.0
135 Fixed possible race in online protocol, that lead to panic.
140 @section Release 6.3.0
144 Fixed possible panic while showing progress during online protocol.
149 @section Release 6.2.1
153 Three places in logs contained excess @code{%s}.
158 @section Release 6.2.0
162 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
165 Yet another logging refactoring and simplification.
166 Should be no visible differences to the end user.
171 @section Release 6.1.0
175 Optimization: most commands do not keep opened file descriptors now.
176 Previously you can exceed maximal number of opened files if you have got
177 many packets in the spool directory.
180 Optimization: do not close file descriptor of the file we download
181 online. Previously each chunk lead to expensive open/close calls.
184 Online downloaded files are saved with @file{.nock} (non-checksummed)
185 suffix, waiting either for @command{nncp-check}, or online daemons to
186 perform integrity check.
189 Optimization: files, that are not resumed, are checksummed immediately
190 during the online download, skipping @file{.nock}-intermediate step.
193 Ability to store encrypted packet's header in @file{.hdr} file, close to
194 the packet itself. That can greatly increase performance of packets
195 listing on filesystems with big block's size.
200 @section Release 6.0.0
204 Log uses human readable and easy machine parseable
205 @url{https://www.gnu.org/software/recutils/, recfile} format for the
206 records, instead of structured RFC 3339 lines. Old logs are not readable
207 by @command{nncp-log} anymore.
210 @option{-autotoss*} option workability with @command{nncp-daemon}'s
211 @option{-inetd} mode.
214 Call's @option{when-tx-exists} allows to make a call only when outbound
215 packets exists. Combined with seconds-aware cron expression that can be
216 used as some kind of auto dialler.
219 @command{nncp-cronexpr} command allows you to check validity and
220 expectations of specified cron expression.
225 @section Release 5.6.0
229 @option{-autotoss*} option runs tosser not after the call, but every
230 second while it is active.
233 @option{autotoss}, @option{autotoss-doseen},
234 @option{autotoss-nofile}, @option{autotoss-nofreq},
235 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
236 @option{calls} configuration section. You can configure per-call
237 automatic tosser options.
240 Use vendoring, instead of @env{GOPATH} overriding during tarball
241 installation, because current minimal Go's version is 1.12 and it
247 @section Release 5.5.1
251 Respect for @env{BINDIR}, @env{INFODIR} and @env{DOCDIR} environment
252 variables in @file{config} during installation.
257 @section Release 5.5.0
261 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
262 @command{nncp-bundle} and @command{nncp-stat}.
265 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
268 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
269 options now. Uncompressed packets are not compatible with previous NNCP
273 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
274 have @option{-autotoss*} options for running tosser after call is ended.
277 Updated dependencies. Minimal required Go version is 1.12.
282 @section Release 5.4.1
286 Fixed @code{SENDMAIL} variable usage during the build.
291 @section Release 5.4.0
295 Updated dependencies.
298 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
299 This should not influence package maintainers, because minimal @command{redo}
300 implementation is included in tarball.
305 @section Release 5.3.3
309 More various error checks.
312 Updated dependencies.
317 @section Release 5.3.2
321 Fixed incorrect logic of @option{onlinedeadline} timeout, where
322 connection won't take into account incoming packets events and will
323 forcefully disconnect.
328 @section Release 5.3.1
332 Fixed @option{onlinedeadline} workability with call addresses that use
333 external commands (@verb{#"|somecmd"#}).
336 @command{nncp-stat} has @option{-pkt} option displaying information
337 about each packet in the spool.
342 @section Release 5.3.0
346 Progress messages contain prefix, describing the running action.
349 Fixed not occurring handshake messages padding.
352 Finish all SP protocol related goroutines, less memory leak.
355 SP protocol generates less socket write calls, thus generating less TCP
359 Check @option{onlinedeadline} and @option{maxonlinetime} options every
360 second, independently from socket reads (up to 10 seconds).
363 Once per minute, if no other traffic exists, PING packets are sent in
364 SP-connection. That allows faster determining of connection unworkability.
367 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
372 @section Release 5.2.1
376 Fixed SP protocol error handling, sometimes causing program panic.
381 @section Release 5.2.0
385 Most commands by default show oneline operations progress.
386 @option{-progress}, @option{-noprogress} command line options,
387 @option{noprogress} configuration file option appeared.
390 Fixed incorrect @command{nncp-check} command return code, that returned
391 bad code when everything is good.
394 Free disk space check during @command{nncp-bundle -rx} call.
399 @section Release 5.1.2
403 @strong{Critical} vulnerability: remote peers authentication could lead
404 to incorrect identification of remote side, allowing foreign encrypted
408 Bugfix: private and public Noise keys were swapped in newly created
409 configuration files, that lead to inability to authenticate online peers.
412 Explicit directories fsync-ing for guaranteed files renaming.
417 @section Release 5.1.1
421 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
426 @section Release 5.1.0
430 @command{nncp-file} can send directories, automatically creating pax
434 Free disk space is checked during outbound packets creation.
437 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
438 file options replaced with the structure:
439 @option{freq: @{path: ..., minsize: ..., chunked: ...@}}.
442 Added @option{freq.maxsize} configuration file option, forbidding of
443 freq sending larger than specified size.
446 Ability to notify about successfully executed commands (exec) with
447 @option{notify.exec} configuration file option.
452 @section Release 5.0.0
456 @strong{Incompatible} configuration file format change: YAML is
457 replaced with Hjson, due to its simplicity, without noticeable lack
458 of either functionality or convenience.
461 @strong{Incompatible} plain packet format changes. Older versions are
462 not supported. @code{zlib} compression is replaced with
463 @code{Zstandard}, due to its speed and efficiency, despite library
464 version is not mature enough.
467 Ability to call remote nodes via pipe call of external command, not only
471 @command{nncp-cfgnew} generates configuration file with many
472 comments. @option{-nocomments} option can be used for an old
476 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
477 avoid possible collisions with @file{.nncp.chunkCTR}.
480 Ability to override process umask through configuration file option.
483 Files and directories are created with 666/777 permissions by default,
484 allowing control with @command{umask}.
487 Updated dependencies.
490 Full usage of go modules for dependencies management
491 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
494 Forbid any later GNU GPL version autousage
495 (project's licence now is GNU GPLv3-only).
502 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
510 @strong{Incompatible} encrypted and eblob packet format change: AEAD
511 encryption mode with 128 KiB blocks is used now, because previously
512 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
513 decrypted data to external command. Older versions are not supported.
516 Available free space checking before copying in @command{nncp-xfer},
517 @command{nncp-daemon}, @command{nncp-call(er)}.
520 @command{nncp-call} has ability only to list packets on remote node,
521 without their transmission.
524 @command{nncp-call} has ability to transfer only specified packets.
527 Workability of @option{xxrate} preference in @option{calls}
528 configuration file section.
531 Dependant libraries are updated.
537 Begin using of @code{go.mod} subsystem.
544 @item @command{nncp-daemon} can be run as @command{inetd}-service.
552 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
553 if @file{.seen} exists and treat it like file was already downloaded.
554 Possibly it was transferred out-of-bound and remote side needs to be
558 If higher priority packet is spooled, then @command{nncp-daemon} will
559 queue its sending first, interrupting lower priority transmissions.
562 Simple packet rate limiter added to online-related tools
563 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
566 Ability to specify niceness with symbolic notation:
567 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
570 Changed default niceness levels:
571 for @command{nncp-exec} from 64 to 96,
572 for @command{nncp-freq} from 64 to 160,
573 for @command{nncp-file} from 196 to 224.
581 @strong{Incompatible} @emph{bundle} archive format changes and
582 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
583 valid tar archives, but Go 1.9 made them invalid because of long paths
584 inside. NNCP accidentally was dependant on that bug. Explicit adding of
585 @file{NNCP/} directory in archive restores workability with valid tar
593 Ability to disable relaying at all using @verb{|-via -|} command line option.
601 @strong{Incompatible} plain packet format changes. Older versions are
605 Ability to queue remote command execution, by configuring @option{exec}
606 option in configuration file and using @command{nncp-exec} command:
609 @command{nncp-mail} command is replaced with more flexible
610 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
611 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
613 @option{sendmail} configuration file option is replaced with
614 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
615 @verb{|exec: sendmail: [...]|}.
619 Ability to override @option{via} configuration option for destination
620 node via @option{-via} command line option for following commands:
621 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
624 Chunked files, having size less than specified chunk size, will be sent
625 as an ordinary single file.
628 Exec commands are invoked with additional @env{NNCP_NICE} and
629 @env{NNCP_SELF} environment variables.
632 Files, that are sent as a reply to freq, have niceness level taken from
633 the freq packet. You can set desired niceness during @command{nncp-freq}
634 invocation using @option{-replynice} option.
637 @command{nncp-toss} command can ignore specified packet types during
638 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
642 @command{nncp-file} command uses
643 @option{FreqMinSize}/@option{FreqChunked} configuration file options
644 for @option{-minsize}/@option{-chunked} by default. You can turn this
645 off by specifying zero value.
654 @strong{Incompatible} encrypted/eblob packet format changes. Older
655 versions are not supported.
658 Twofish encryption algorithm is replaced with ChaCha20. It is much more
659 faster. One cryptographic primitive less.
662 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
663 another cryptographic primitive less (assuming that BLAKE2X is nearly
664 identical to BLAKE2).
673 @strong{Incompatible} encrypted packet format changes. Older versions
677 @command{nncp-bundle} command can either create stream of encrypted
678 packets, or digest it. It is useful when dealing with
679 @code{stdin}/@code{stdout} based transmission methods (like writing to
680 CD-ROM without intermediate prepared ISO image and working with tape
684 @command{nncp-toss} is able to create @file{.seen} files preventing
685 duplicate packets receiving.
688 Single background checksum verifier worker is allowed in
689 @command{nncp-call}. This is helpful when thousands of small inbound
690 packets could create many goroutines.
693 Ability to override path to spool directory and logfile through either
694 command line argument, or environment variable.
697 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
698 @file{.part}, @file{.lock} and temporary files.
703 @section Release 0.12
705 @item Sendmail command is called with @env{NNCP_SENDER} environment variable.
709 @section Release 0.11
711 @item @command{nncp-stat}'s command output is sorted by node name.
715 @section Release 0.10
718 @command{nncp-freq}'s @file{DST} argument is optional now. Last
719 @file{SRC} path's element will be used by default.
726 Fix @option{-rx}/@option{-tx} arguments processing in
727 @command{nncp-call} command. They were ignored.
734 Little bugfix in @command{nncp-file} command, where @option{-minsize}
735 option for unchunked transfer was not in KiBs, but in bytes.
743 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
744 encrypted temporary file for that.
747 Chunked files transmission appeared with corresponding
748 @command{nncp-reass} command and @option{freqchunked} configuration file
749 entry. Useful for transferring big files over small storage devices.
752 @option{freqminsize} configuration file option, analogue to
753 @option{-minsize} one.
756 @command{nncp-xfer}'s @option{-force} option is renamed to
757 @option{-mkdir} for clarity.
760 @option{-minsize} option is specified in KiBs, not bytes, for
764 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
765 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
766 common prefix and are grouped together for convenience.
769 @command{nncp-cfgenc} command appeared, allowing configuration file
770 encryption/decryption, for keeping it safe without any either OpenPGP or
774 Cryptographic libraries (dependencies) are updated.
781 @item Small @command{nncp-rm} command appeared.
782 @item Cryptographic libraries (dependencies) are updated.
789 Trivial small fix in default niceness level of @command{nncp-file}
790 and @command{nncp-freq} commands.
798 Small fix in @command{nncp-call}, @command{nncp-caller},
799 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
803 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
804 and more convenient to use.
807 @command{nncp-mincfg} command appeared: helper allowing to create
808 minimalistic stripped down configuration file without private keys, that
809 is useful during @command{nncp-xfer} usage.
816 @item Fixed compatibility with Go 1.6.
824 @strong{Incompatible} packet's format change (magic number is changed
825 too): size field is encrypted and is not send in plaintext anymore.
828 @option{-minsize} option gives ability to automatically pad outgoing
829 packets to specified minimal size.
832 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
833 always check new @emph{tx} packets appearance in the background while
834 connected. Remote side is immediately notified.
837 @option{-onlinedeadline} option gives ability to configure timeout of
838 inactivity of online connection, when it could be disconnected. It could
839 be used to keep connection alive for a long time.
842 @option{-maxonlinetime} option gives ability to set maximal allowable
843 online connection aliveness time.
846 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
849 @command{nncp-pkt} command can decompress the data.