Python-rsync

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2.2.1

Released 2019-10-16

* Fix 176 hangs calculating deltas for files larger than 4GB. (dbaarda,
https://github.com/librsync/librsync/pull/177)

2.2.0

Released 2019-10-12

* Bump minor version from 2.1.0 to 2.2.0 to reflect additional RabinKarp
rollsum support.

* Fix MSVC builds by adding missing LIBRSYNC_EXPORT to variables in
librsync.h, add -DLIBRSYNC_STATIC_DEFINE to the sumset_test target,
and correctly install .dll files in the bin directory.
(adsun701, https://github.com/librsync/librsync/pull/161)

* Add RabinKarp rollsum support and make it the default. RabinKarp is a much
better rolling hash, which reduces the risk of hash collision corruption
and speeds up delta calculations. The rdiff cmd gets a new `-R
(rollsum|rabinkarp)` argument with the default being `rabinkarp`, Use `-R
rollsum` to generate backwards-compatible signatures. (dbaarda,
https://github.com/librsync/librsync/issues/3)

* Use single-byte literal commands for small inserts in deltas. This makes
each small insert use 1 less byte in deltas. (dbaarda,
https://github.com/librsync/librsync/issues/120)

* Fix multiple warnings (cross-)compiling for windows. (Adsun701,
https://github.com/librsync/librsync/pull/165,
https://github.com/librsync/librsync/pull/166)

* Change rs_file_size() to report -1 instead of 0 for unknown file sizes (not
a regular file). (dbaarda https://github.com/librsync/librsync/pull/168)

* Add cmake BUILD_SHARED_LIBS option for static library support.
BUILD_SHARED_LIBS defaults to ON, and can be set to OFF using `ccmake .` to
build librsync as a static library. (dbaarda
https://github.com/librsync/librsync/pull/169)

* Fix compile errors and add .gitignore entries for MSVS 2019. Fixes
hashtable.h to be C99 compliant. (ardovm
https://github.com/librsync/librsync/pull/170)

2.1.0

Released 2019-08-19

* Bump minor version from 2.0.3 to 2.1.0 to reflect additions to librsync.h.

* Fix exporting of private symbols from librsync library. Add export of
useful large file functions `rs_file_open()`, `rs_file_close()`, and
`rs_file_size()` to librsync.h. Add export of `rs_signature_log_stats()` to
log signature hashtable hit/miss stats. Improve rdiff error output.
(dbaarda, https://github.com/librsync/librsync/issues/130)

* Updated release process to include stable tarballs. (dbaarda,
https://github.com/librsync/librsync/issues/146)

* Remove redundant and broken `--paranoia` argument from rdiff. (dbaarda,
https://github.com/librsync/librsync/issues/155)

* Fix memory leak of `rs_signature_t->block_sigs` when freeing signatures.
(telles-simbiose, https://github.com/librsync/librsync/pull/147)

* Document delta file format. (zmj,
https://github.com/librsync/librsync/issues/46)

* Fix up doxygen comments. (dbaarda,
https://github.com/librsync/librsync/pull/151)

2.0.2

Released 2018-02-27

* Improve CMake install paths configuration (wRAR,
https://github.com/librsync/librsync/pull/133) and platform support
checking when cross-compiling (fornwall,
https://github.com/librsync/librsync/pull/136).

* Fix Unaligned memory access for rs_block_sig_init() (dbaarda,
https://github.com/librsync/librsync/issues/135).

* Fix hashtable_test.c name collision for key_t in sys/types.h on some
platforms (dbaarda, https://github.com/librsync/librsync/issues/134)

* Format code with consistent style, adding `make tidy` and `make
tidyc` targets for reformating code and comments. (dbaarda,
https://github.com/librsync/librsync/issues/125)

* Removed perl as a build dependency. Note it is still required for some
tests. (dbaarda, https://github.com/librsync/librsync/issues/75)

* Update RPM spec file for v2.0.2 and fix cmake man page install. (deajan,
https://github.com/librsync/librsync/issues/47)

2.0.1

Released 2017-10-17

* Extensively reworked Doxygen documentation, now available at
http://librsync.sourcefrog.net/ (Martin Pool)

* Removed some declarations from librsync.h that were unimplemented or no
longer ever useful: `rs_work_options`, `rs_accum_value`. Remove
declaration of unimplemented `rs_mdfour_file()`. (Martin Pool)

* Remove shipped `snprintf` code: no longer acutally linked after changing to
CMake, and since it's part of C99 it should be widely available.
(Martin Pool)

* Document that Ninja (http://ninja-build.org/) is supported under CMake.
It's a bit faster and nicer than Make. (Martin Pool)

* `make check` (or `ninja check` etc) will now build and run the tests.
Previously due to a CMake limitation, `make test` would only run existing
tests and could fail if they weren't built.
(Martin Pool, https://github.com/librsync/librsync/issues/49)

* Added cmake options to exclude rdiff target and compression from build.
See install documentation for details. Thanks to Michele Bertasi.

* `popt` is only needed when `rdiff` is being built. (gulikoza)

* Improved large file support for platforms using different variants
of `fseek` (`fseeko`, `fseeko64`, `_fseeki64`), `fstat` (`fstat64`,
`_fstati64`), and `fileno` (`_fileno`). (dbaarda, charlievieth,
gulikoza, marius-nicolae)

* `rdiff -s` option now shows bytes read/written and speed. (gulikoza).
For delta operations it also shows hashtable match statistics. (dbaarda)

* Running rdiff should not overwrite existing files (signatures, deltas and
new patched files) by default. If the destination file exists, rdiff will
now exit with an error. Add new option -f (--force) to overwrite existing
files. (gulikoza)

* Improve signature memory allocation (doubling size instead of calling
realloc for every sig block) and added support for preallocation. See
streaming.md job->estimated_signature_count for usage when using the
library. `rdiff` uses this by default if possible. (gulikoza, dbaarda)

* Significantly tidied signature handling code and testing, resulting in more
consistent error handling behaviour, and making it easier to plug in
alternative weak and strong sum implementations. Also fixed "slack delta"
support for delta calculation with no signature. (dbaarda)

* `stdint.h` and `inttypes.h` from C99 is now required. Removed redundant
librsync-config.h header file. (dbaarda)

* Lots of small fixes for windows platforms and building with MSVC.
(lasalvavida, mbrt, dbaarda)

* New open addressing hashtable implementation that significantly speeds up
delta operations, particularly for large files. Also fixed degenerate
behaviour with large number of duplicate blocks like runs of zeros
in sparse files. (dbaarda)

* Optional support with cmake option for using libb2 blake2 implementation.
Also updated included reference blake2 implementation with bug fixes
(dbaarda).

* Improved default values for input and output buffer sizes. The defaults are
now --input-size=0 and --output-size=0, which will choose recommended
default sizes based on the --block-size and the operation being performed.
(dbaarda)

* Fixed hanging for truncated input files. It will now correctly report an
error indicating an unexpected EOF was encountered. (dbaarda,
https://github.com/librsync/librsync/issues/32)

* Fixed 13 so that faster slack delta's are used for signatures of
empty files. (dbaarda,
https://github.com/librsync/librsync/issues/13)

* Fixed 33 so rs_job_iter() doesn't need calling twice with eof=1.
Also tidied and optimized it a bit. (dbaarda,
https://github.com/librsync/librsync/issues/33)

* Fixed 55 remove excessive rs_fatal() calls, replacing checks for
programming errors with assert statements. Now rs_fatal() will only
be called for rare unrecoverable fatal errors like malloc failures or
impossibly large inputs. (dbaarda,
https://github.com/librsync/librsync/issues/55)

2.0.0

Released 2015-11-29

Note: despite the major version bump, this release has few changes and should
be binary and API compatible with the previous version.

* Bump librsync version number to 2.0, to match the library
soname/dylib version.
(Martin Pool, https://github.com/librsync/librsync/issues/48)

librsync 1.0.1 (2015-11-21)

* Better performance on large files. (VictorDenisov)

* Add comment on usage of rs_build_hash_table(), and assert correct use.
Callers must call rs_build_hash_table() after loading the signature,
and before calling rs_delta_begin().
Thanks to Paul Harris <paulharriscomputer.org>

* Switch from autoconf to CMake.

Thanks to Adam Schubert.

librsync 1.0.0 (2015-01-23)

* SECURITY: CVE-2014-8242: librsync previously used a truncated MD4
"strong" check sum to match blocks. However, MD4 is not cryptographically
strong. It's possible that an attacker who can control the contents of one
part of a file could use it to control other regions of the file, if it's
transferred using librsync/rdiff. For example this might occur in a
database, mailbox, or VM image containing some attacker-controlled data.

To mitigate this issue, signatures will by default be computed with a
256-bit BLAKE2 hash. Old versions of librsync will complain about a
bad magic number when given these signature files.

Backward compatibility can be obtained using the new
`rdiff sig --hash=md4`
option or through specifying the "signature magic" in the API, but
this should not be used when either the old or new file contain
untrusted data.

Deltas generated from those signatures will also use BLAKE2 during
generation, but produce output that can be read by old versions.

See https://github.com/librsync/librsync/issues/5

Thanks to Michael Samuel <miknet.net> for reporting this and offering an
initial patch.

* Various build fixes, thanks Timothy Gu.

* Improved rdiff man page from Debian.

* Improved librsync.spec file for building RPMs.

* Fixed bug 1110812 'internal error: job made no progress'; on large
files.

* Moved hosting to https://github.com/librsync/librsync/

* Travis-CI.org integration test at https://travis-ci.org/librsync/librsync/

* You can set `$LIBTOOLIZE` before running `autogen.sh`, for example on
OS X Homebrew where it is called `glibtoolize`.

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