4 See also this page @ref{Новости, on russian}.
11 @command{nncp-trns} command appeared for manual transition packets creation.
15 @section Release 7.1.1
19 Fixed failing directories fsync after @file{.seen} file creation.
24 @section Release 7.1.0
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.
33 Fixed workability of @command{nncp-file} and @command{nncp-exec}
34 commands, that use temporary file (stdin and @option{-use-tmp}).
37 Fixed disappearing bad return code in @command{nncp-exec} command.
40 Fixed invalid @file{.hdr} generation when transitional packets are used.
43 @option{-all} option appeared in @command{nncp-rm} command, applying to
44 all the nodes at once.
47 @option{-cycle} option appeared in @command{nncp-check} command, looping
48 the check in infinite cycle.
51 @command{nncp-rm} command can take node alias name.
54 @command{nncp-pkt} can parse @file{.hdr} files.
59 @section Release 7.0.0
63 Minimal required Go version 1.13.
66 Merkle Tree-based Hashing with BLAKE3 (MTH) is used instead of BLAKE2b.
67 Because of that, there are backward @strong{incompatible} changes of
68 encrypted files (everything laying in the spool directory) and
69 @file{.meta} files of chunked transfer.
71 Current implementation is far from being optimal: it lacks
72 parallelizable calculations and has higher memory consumption: nearly
73 512 KiB for each 1 GiB of file's data. Future performance and memory
74 size optimizations should not lead to packet's format change. But it is
75 still several times faster than BLAKE2b.
78 Resumed online downloads, because of MTH, require reading only of the
79 preceding part of file, not the whole one as was before.
82 @command{nncp-hash} utility appeared for calculating file's MTH hash.
85 BLAKE2 KDF and XOF functions are replaced with BLAKE3 in encrypted
86 packets. Lowering number of used primitives. Also, its encrypted
87 packet's header is used as an associated data during encryption.
90 MultiCast Discovery uses
91 @verb{|ff02::4e4e:4350|} address instead of @verb{|ff02::1|}.
94 @command{nncp-cfgenc} mistakenly asked passphrase three times during encryption.
97 @command{nncp-stat} reports about partly downloaded packets.
100 Updated dependencies.
105 @section Release 6.6.0
109 @command{nncp-daemon}, @command{nncp-call} and @command{nncp-caller}
110 commands wait for all background checksummers completion after
111 connection is finished.
114 Added possibility of address determining through multicast announcement
115 in local area network, so called MCD (MultiCast Discovery).
120 @section Release 6.5.0
124 Fixed segfault in @command{nncp-daemon} when SP handshake did not succeed.
127 Fixed possible bad return code ignoring in automatic tosser.
130 Fixed race during file descriptors closing when online protocol call is
131 finished, that could lead to write error of received packet fragment.
134 Kill all packet transmission progress bars in @command{nncp-daemon},
135 @command{nncp-call} and @command{nncp-caller} when call is finished.
140 @section Release 6.4.0
144 Fixed possible race in online protocol, that lead to panic.
149 @section Release 6.3.0
153 Fixed possible panic while showing progress during online protocol.
158 @section Release 6.2.1
162 Three places in logs contained excess @code{%s}.
167 @section Release 6.2.0
171 Returned @command{nncp-caller}'s @option{-autotoss*} options workability.
174 Yet another logging refactoring and simplification.
175 Should be no visible differences to the end user.
180 @section Release 6.1.0
184 Optimization: most commands do not keep opened file descriptors now.
185 Previously you can exceed maximal number of opened files if you have got
186 many packets in the spool directory.
189 Optimization: do not close file descriptor of the file we download
190 online. Previously each chunk lead to expensive open/close calls.
193 Online downloaded files are saved with @file{.nock} (non-checksummed)
194 suffix, waiting either for @command{nncp-check}, or online daemons to
195 perform integrity check.
198 Optimization: files, that are not resumed, are checksummed immediately
199 during the online download, skipping @file{.nock}-intermediate step.
202 Ability to store encrypted packet's header in @file{.hdr} file, close to
203 the packet itself. That can greatly increase performance of packets
204 listing on filesystems with big block's size.
209 @section Release 6.0.0
213 Log uses human readable and easy machine parseable
214 @url{https://www.gnu.org/software/recutils/, recfile} format for the
215 records, instead of structured RFC 3339 lines. Old logs are not readable
216 by @command{nncp-log} anymore.
219 @option{-autotoss*} option workability with @command{nncp-daemon}'s
220 @option{-inetd} mode.
223 Call's @option{when-tx-exists} allows to make a call only when outbound
224 packets exists. Combined with seconds-aware cron expression that can be
225 used as some kind of auto dialler.
228 @command{nncp-cronexpr} command allows you to check validity and
229 expectations of specified cron expression.
234 @section Release 5.6.0
238 @option{-autotoss*} option runs tosser not after the call, but every
239 second while it is active.
242 @option{autotoss}, @option{autotoss-doseen},
243 @option{autotoss-nofile}, @option{autotoss-nofreq},
244 @option{autotoss-noexec}, @option{autotoss-notrns} options available in
245 @option{calls} configuration section. You can configure per-call
246 automatic tosser options.
249 Use vendoring, instead of @env{GOPATH} overriding during tarball
250 installation, because current minimal Go's version is 1.12 and it
256 @section Release 5.5.1
260 Respect for @env{BINDIR}, @env{INFODIR} and @env{DOCDIR} environment
261 variables in @file{config} during installation.
266 @section Release 5.5.0
270 Bugfixes in @command{nncp-call(er)}/@command{nncp-daemon},
271 @command{nncp-bundle} and @command{nncp-stat}.
274 @command{nncp-rm} has @option{-dryrun} and @option{-older} options now.
277 @command{nncp-exec} has @option{-use-tmp} and @option{-nocompress}
278 options now. Uncompressed packets are not compatible with previous NNCP
282 @command{nncp-call}, @command{nncp-caller} and @command{nncp-daemon} commands
283 have @option{-autotoss*} options for running tosser after call is ended.
286 Updated dependencies. Minimal required Go version is 1.12.
291 @section Release 5.4.1
295 Fixed @code{SENDMAIL} variable usage during the build.
300 @section Release 5.4.0
304 Updated dependencies.
307 Build system is moved from Makefiles to @url{http://cr.yp.to/redo.html, redo}.
308 This should not influence package maintainers, because minimal @command{redo}
309 implementation is included in tarball.
314 @section Release 5.3.3
318 More various error checks.
321 Updated dependencies.
326 @section Release 5.3.2
330 Fixed incorrect logic of @option{onlinedeadline} timeout, where
331 connection won't take into account incoming packets events and will
332 forcefully disconnect.
337 @section Release 5.3.1
341 Fixed @option{onlinedeadline} workability with call addresses that use
342 external commands (@verb{#"|somecmd"#}).
345 @command{nncp-stat} has @option{-pkt} option displaying information
346 about each packet in the spool.
351 @section Release 5.3.0
355 Progress messages contain prefix, describing the running action.
358 Fixed not occurring handshake messages padding.
361 Finish all SP protocol related goroutines, less memory leak.
364 SP protocol generates less socket write calls, thus generating less TCP
368 Check @option{onlinedeadline} and @option{maxonlinetime} options every
369 second, independently from socket reads (up to 10 seconds).
372 Once per minute, if no other traffic exists, PING packets are sent in
373 SP-connection. That allows faster determining of connection unworkability.
376 @command{nncp-toss} uses lock-file to prevent simultaneous tossing.
381 @section Release 5.2.1
385 Fixed SP protocol error handling, sometimes causing program panic.
390 @section Release 5.2.0
394 Most commands by default show oneline operations progress.
395 @option{-progress}, @option{-noprogress} command line options,
396 @option{noprogress} configuration file option appeared.
399 Fixed incorrect @command{nncp-check} command return code, that returned
400 bad code when everything is good.
403 Free disk space check during @command{nncp-bundle -rx} call.
408 @section Release 5.1.2
412 @strong{Critical} vulnerability: remote peers authentication could lead
413 to incorrect identification of remote side, allowing foreign encrypted
417 Bugfix: private and public Noise keys were swapped in newly created
418 configuration files, that lead to inability to authenticate online peers.
421 Explicit directories fsync-ing for guaranteed files renaming.
426 @section Release 5.1.1
430 Fixed workability of @command{nncp-file} with @option{-chunked 0} option.
435 @section Release 5.1.0
439 @command{nncp-file} can send directories, automatically creating pax
443 Free disk space is checked during outbound packets creation.
446 @option{freq}, @option{freqminsize}, @option{freqchunked} configuration
447 file options replaced with the structure:
448 @option{freq: @{path: ..., minsize: ..., chunked: ...@}}.
451 Added @option{freq.maxsize} configuration file option, forbidding of
452 freq sending larger than specified size.
455 Ability to notify about successfully executed commands (exec) with
456 @option{notify.exec} configuration file option.
461 @section Release 5.0.0
465 @strong{Incompatible} configuration file format change: YAML is
466 replaced with Hjson, due to its simplicity, without noticeable lack
467 of either functionality or convenience.
470 @strong{Incompatible} plain packet format changes. Older versions are
471 not supported. @code{zlib} compression is replaced with
472 @code{Zstandard}, due to its speed and efficiency, despite library
473 version is not mature enough.
476 Ability to call remote nodes via pipe call of external command, not only
480 @command{nncp-cfgnew} generates configuration file with many
481 comments. @option{-nocomments} option can be used for an old
485 Duplicate filenames have @file{.CTR} suffix, instead of @file{CTR}, to
486 avoid possible collisions with @file{.nncp.chunkCTR}.
489 Ability to override process umask through configuration file option.
492 Files and directories are created with 666/777 permissions by default,
493 allowing control with @command{umask}.
496 Updated dependencies.
499 Full usage of go modules for dependencies management
500 (@code{go.cypherpunks.ru/nncp/v5} namespace is used).
503 Forbid any later GNU GPL version autousage
504 (project's licence now is GNU GPLv3-only).
511 @item Workability on GNU/Linux systems and Go 1.10 is fixed.
519 @strong{Incompatible} encrypted and eblob packet format change: AEAD
520 encryption mode with 128 KiB blocks is used now, because previously
521 @command{nncp-toss} did not verify encrypted packet's MAC before feeding
522 decrypted data to external command. Older versions are not supported.
525 Available free space checking before copying in @command{nncp-xfer},
526 @command{nncp-daemon}, @command{nncp-call(er)}.
529 @command{nncp-call} has ability only to list packets on remote node,
530 without their transmission.
533 @command{nncp-call} has ability to transfer only specified packets.
536 Workability of @option{xxrate} preference in @option{calls}
537 configuration file section.
540 Dependant libraries are updated.
546 Begin using of @code{go.mod} subsystem.
553 @item @command{nncp-daemon} can be run as @command{inetd}-service.
561 @command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller} check
562 if @file{.seen} exists and treat it like file was already downloaded.
563 Possibly it was transferred out-of-bound and remote side needs to be
567 If higher priority packet is spooled, then @command{nncp-daemon} will
568 queue its sending first, interrupting lower priority transmissions.
571 Simple packet rate limiter added to online-related tools
572 (@command{nncp-daemon}, @command{nncp-call}, @command{nncp-caller}).
575 Ability to specify niceness with symbolic notation:
576 @verb{|NORMAL|}, @verb{|BULK+10|}, @verb{|PRIORITY-5|}, etc.
579 Changed default niceness levels:
580 for @command{nncp-exec} from 64 to 96,
581 for @command{nncp-freq} from 64 to 160,
582 for @command{nncp-file} from 196 to 224.
590 @strong{Incompatible} @emph{bundle} archive format changes and
591 @command{nncp-bundle} workability with Go 1.10+. Bundles must be
592 valid tar archives, but Go 1.9 made them invalid because of long paths
593 inside. NNCP accidentally was dependant on that bug. Explicit adding of
594 @file{NNCP/} directory in archive restores workability with valid tar
602 Ability to disable relaying at all using @verb{|-via -|} command line option.
610 @strong{Incompatible} plain packet format changes. Older versions are
614 Ability to queue remote command execution, by configuring @option{exec}
615 option in configuration file and using @command{nncp-exec} command:
618 @command{nncp-mail} command is replaced with more flexible
619 @command{nncp-exec}. Instead of @verb{|nncp-mail NODE RECIPIENT|}
620 you must use @verb{|nncp-exec NODE sendmail RECIPIENT|}.
622 @option{sendmail} configuration file option is replaced with
623 @option{exec}. @verb{|sendmail: [...]|} must be replaced with
624 @verb{|exec: sendmail: [...]|}.
628 Ability to override @option{via} configuration option for destination
629 node via @option{-via} command line option for following commands:
630 @command{nncp-file}, @command{nncp-freq}, @command{nncp-exec}.
633 Chunked files, having size less than specified chunk size, will be sent
634 as an ordinary single file.
637 Exec commands are invoked with additional @env{NNCP_NICE} and
638 @env{NNCP_SELF} environment variables.
641 Files, that are sent as a reply to freq, have niceness level taken from
642 the freq packet. You can set desired niceness during @command{nncp-freq}
643 invocation using @option{-replynice} option.
646 @command{nncp-toss} command can ignore specified packet types during
647 processing: @option{-nofile}, @option{-nofreq}, @option{-noexec},
651 @command{nncp-file} command uses
652 @option{FreqMinSize}/@option{FreqChunked} configuration file options
653 for @option{-minsize}/@option{-chunked} by default. You can turn this
654 off by specifying zero value.
663 @strong{Incompatible} encrypted/eblob packet format changes. Older
664 versions are not supported.
667 Twofish encryption algorithm is replaced with ChaCha20. It is much more
668 faster. One cryptographic primitive less.
671 HKDF-BLAKE2b-256 KDF algorithm is replaced with BLAKE2Xb XOF. Yet
672 another cryptographic primitive less (assuming that BLAKE2X is nearly
673 identical to BLAKE2).
682 @strong{Incompatible} encrypted packet format changes. Older versions
686 @command{nncp-bundle} command can either create stream of encrypted
687 packets, or digest it. It is useful when dealing with
688 @code{stdin}/@code{stdout} based transmission methods (like writing to
689 CD-ROM without intermediate prepared ISO image and working with tape
693 @command{nncp-toss} is able to create @file{.seen} files preventing
694 duplicate packets receiving.
697 Single background checksum verifier worker is allowed in
698 @command{nncp-call}. This is helpful when thousands of small inbound
699 packets could create many goroutines.
702 Ability to override path to spool directory and logfile through either
703 command line argument, or environment variable.
706 @command{nncp-rm} is able to delete outbound/inbound, @file{.seen},
707 @file{.part}, @file{.lock} and temporary files.
712 @section Release 0.12
714 @item Sendmail command is called with @env{NNCP_SENDER} environment variable.
718 @section Release 0.11
720 @item @command{nncp-stat}'s command output is sorted by node name.
724 @section Release 0.10
727 @command{nncp-freq}'s @file{DST} argument is optional now. Last
728 @file{SRC} path's element will be used by default.
735 Fix @option{-rx}/@option{-tx} arguments processing in
736 @command{nncp-call} command. They were ignored.
743 Little bugfix in @command{nncp-file} command, where @option{-minsize}
744 option for unchunked transfer was not in KiBs, but in bytes.
752 Ability to feed @command{nncp-file} from @code{stdin}, that uses an
753 encrypted temporary file for that.
756 Chunked files transmission appeared with corresponding
757 @command{nncp-reass} command and @option{freqchunked} configuration file
758 entry. Useful for transferring big files over small storage devices.
761 @option{freqminsize} configuration file option, analogue to
762 @option{-minsize} one.
765 @command{nncp-xfer}'s @option{-force} option is renamed to
766 @option{-mkdir} for clarity.
769 @option{-minsize} option is specified in KiBs, not bytes, for
773 @command{nncp-newcfg} command is renamed to @command{nncp-cfgnew},
774 and @command{nncp-mincfg} to @command{nncp-cfgmin} -- now they have
775 common prefix and are grouped together for convenience.
778 @command{nncp-cfgenc} command appeared, allowing configuration file
779 encryption/decryption, for keeping it safe without any either OpenPGP or
783 Cryptographic libraries (dependencies) are updated.
790 @item Small @command{nncp-rm} command appeared.
791 @item Cryptographic libraries (dependencies) are updated.
798 Trivial small fix in default niceness level of @command{nncp-file}
799 and @command{nncp-freq} commands.
807 Small fix in @command{nncp-call}, @command{nncp-caller},
808 @command{nncp-daemon}: they can segmentation fail sometimes (no data is
812 @command{nncp-newnode} renamed to @command{nncp-newcfg} -- it is shorter
813 and more convenient to use.
816 @command{nncp-mincfg} command appeared: helper allowing to create
817 minimalistic stripped down configuration file without private keys, that
818 is useful during @command{nncp-xfer} usage.
825 @item Fixed compatibility with Go 1.6.
833 @strong{Incompatible} packet's format change (magic number is changed
834 too): size field is encrypted and is not send in plaintext anymore.
837 @option{-minsize} option gives ability to automatically pad outgoing
838 packets to specified minimal size.
841 @command{nncp-daemon} and @command{nncp-call}/@command{nncp-caller}
842 always check new @emph{tx} packets appearance in the background while
843 connected. Remote side is immediately notified.
846 @option{-onlinedeadline} option gives ability to configure timeout of
847 inactivity of online connection, when it could be disconnected. It could
848 be used to keep connection alive for a long time.
851 @option{-maxonlinetime} option gives ability to set maximal allowable
852 online connection aliveness time.
855 @command{nncp-caller} command appeared: cron-ed TCP daemon caller.
858 @command{nncp-pkt} command can decompress the data.