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Changes in TIFF v3.9.0
======================
.. table:: References
:widths: auto
====================== ==========================================
Current Version v3.9.0 (:tag:`Release-v3-9-0`)
Previous Version :doc:`v3.9.0beta <v3.9.0beta>`
Master Download Site `<https://download.osgeo.org/libtiff/>`_
Master HTTP Site `<http://www.simplesystems.org/libtiff/>`_
====================== ==========================================
This document describes the changes made to the software between the
*previous* and *current* versions (see above). If you don't
find something listed here, then it was not done in this timeframe, or
it was not considered important enough to be mentioned. The following
information is located here:
Major changes
-------------
* All of the major changes since 3.8.0 were incorporated in
the v3.9.0beta release. This is a stable release from a
stable maintenance branch which incorporates many bug and
security fixes needed by existing users of 3.X.X series
libraries. Any future major changes will be in the 4.0.X
series of releases.
Software configuration changes
------------------------------
* Updated autotools: Autoconf 2.64, Automake 1.11, libtool
2.2.6.
* Enabled support for Automake silent build rules
(``--enable-silent-rules`` or ``make V=0``)
* Enabled support for Automake colorized tests.
* Added detection of a 64-bit integer type so that bundled
utilities (like :program:`tiffcrop`) can use it when necessary. Note
that this version of libtiff does not require a 64-bit integer
type but libtiff 4.0 does.
Library changes
---------------
* :file:`libtiff/Makefile.am`, :file:`libtiff/Makefile.v`: Do not distribute
:file:`tiffconf.h`, remove :file:`tif_config.h`/:file:`tiffconf.h` during cleaning. As
per bug :bugzilla-rs:`1573`
* :file:`tif_dirinfo.c`: :c:func:`_TIFFMergeFields()` now only merges in
field definitions that are missing. Existing definitions are
silently ignored. (:bugzilla-rs:`1585`)
* :file:`tif_write.c`: Rip out the fancy logic in
:c:func:`TIFFAppendToStrip` for establishing if an existing tile can
be rewritten to the same location by comparing the current
size to all the other blocks in the same directory. This is
dangerous in many situations and can easily corrupt a file.
(observed in esoteric GDAL situation that's hard to document).
This change involves leaving the :c:expr:`stripbytecount[]` values
unaltered till :c:func:`TIFFAppendToStrip`. Now we only write a block
back to the same location it used to be at if the new data is
the same size or smaller - otherwise we move it to the end of
file.
* :file:`tif_dirwrite.c`: Try to avoid writing out a full
readbuffer of tile data when writing the directory just
because we have :c:macro:`TIFF_BEENWRITING` at some point in the past. This
was causing odd junk to be written out in a tile of data when
a single tile had an interleaving of reading and writing with
reading last. (highlighted by gdal
:file:`autotest/gcore/tif_write.py` test 7.)
* :file:`tif_predict.c`: use working buffer in :c:func:`PredictorEncodeTile`
to avoid modifying callers buffer.
:gdal-trac:`1965`
* :file:`tif_predict.c`, :file:`tif_predict.h`, :file:`tif_lzw.c`, :file:`tif_zip.c`: Improvements so
that predictor based encoding and decoding works in read-write
update mode properly.
:gdal-trac:`1948`
* :file:`configure.com`, :file:`libtiff/tif_vms.c`: Better OpenVMS
support. Patches from Alexey Chupahin.
* :file:`tif_fax3.c`: fix leak of ``FAXCS`` state (per bug :bugzilla-rs:`1603`).
* :file:`tif_fax3.c`: Make :c:func:`find0span` and :c:func:`find1span` non-inline
to make MSVC 6.0 compiler happy.
* :file:`tif_codec.c`: Avoid :c:macro:`NULL` pointer dereferencing for exotic
compression codec codes.
* :file:`tif_dirread.c`: zero ``tif->tif_dir`` after freeing the
directory in :c:func:`TIFFReadCustomDirectory`. I don't exactly
remember why this was important.
* :file:`tif_dirwrite.c`: Fix potential memory leak writing large
double tags.
* :file:`tif_dirread.c`: Fix unchecked :c:func:`malloc` result.
* :file:`libtiff/tif_lzw.c`: Properly zero out the codetable. As
per bug :bugzilla:`1929`
* :file:`libtiff/tif_lzw.c`: Properly zero out the string
table. Fixes :cve:`2008-2327` security issue.
* :file:`libtiff/tif_jbig.c`: Support the JBIG-KIT 2.0
(compatibility with the older versions retained).
* :file:`libtiff/tif_getimage.c`, :file:`tiffio.h`: removed all use of
``UaToAa`` and ``Bitmap16to8`` arrays in :c:struct:`TIFFRGBAImage` structure to
restore ABI compatibility. These were just an attempt to
speed up processing with precalculated tables.
:bugzilla:`1979`
* :file:`libtiff/tif_codec.c`: Avoid printing ``c->name`` if it does not exist.
* :file:`libtiff/tif_getimage.c`, :file:`tiffio.h`: More ABI corrections.
Removed ``SubsamplingHor/Ver`` from :c:struct:`TIFFRGBAImage` structure.
:bugzilla:`1980`
* :file:`libtiff/tif_jpeg.c`: Avoid errors if the application
writes a full strip for the last partial strip in a jpeg
compressed file. :bugzilla:`1981`
* :file:`libtiff/tiffio.h`: GCC will now validate format
specifications for :c:func:`TIFFError`, :c:func:`TIFFErrorExt`, :c:func:`TIFFWarning`,
and :c:func:`TIFFWarningExt` in order to reveal bugs. Cleaned up
resulting warnings throughout for 32 bit build only.
* :file:`libtiff/tiffiop.h`: Add private type declarations for
:c:type:`int64`, and :c:type:`uint64` so that bundled utilities (like :program:`tiffcrop`)
can use it when necessary.
* :file:`libtiff/tif_predict.c`: Add support for 32bit integer
horz. predictors.
:bugzilla:`1911`
* :file:`libtiff/tif_luv.c`: Fix handling of tiled logluv images.
:bugzilla:`2005`
* :file:`libtiff/tif_write.c`: do not override the planar
configuration to be contig for one sample files if planar
configuration is already set.
:bugzilla:`2057`
* :file:`libtiff/tif_lzw.c`: Fix buffer underflow bug.
:bugzilla:`2065`
* :file:`libtiff/tif_luv.c`: correct return codes from ``encoderow`` to
be 1 on success instead of zero.
:bugzilla:`2069`
* :file:`libtiff/tif_print.c` (:c:func:`TIFFPrintDirectory`): Applied patch
for "tag error may cause segfault in tif_print.c."
:bugzilla:`1896`
Tools changes
-------------
* :file:`tools/tiff2pdf.c`: Fixed setting of alpha value per report
on list.
* :file:`tools/tiffsplit.c`: Get rid of unsafe :c:func:`strcpy`/:c:func:`strcat`
calls when doing the filename/path construction.
* :file:`tools/tiff2pdf.c`: More appropriate format string in
:c:func:`t2p_write_pdf_string`; avoid signed/unsigned mismatch.
* :file:`tools/tiffsplit.c`: Use dynamically allocated array
instead of static when constructing output file names.
* :file:`tools/tiffcrop.c`, :file:`man/tiffcrop.1`: Incorporated
significant functionality update from Richard Nolde.
* :file:`tools/tiff2ps.c`: Incorporated significant functionality
update from Richard Nolde. In particular, support for
rotating the image by 90, 180, 270, and 'auto' has been added.
* :file:`tools/tiff2ps.c`: Remove spurious message printed to
``stderr``.
* :file:`tools/tiffsplit.c`: fix ``sampleformat`` to be :c:type:`shortv` instead
of :c:type:`longv`.
* :file:`tools/rgb2ycbcr.c`, :file:`tools/tiff2rgba.c`: Applied patch for
:cve:`2009-2347` libtiff: integer overflows in various
inter-color space conversion tools.
:bugzilla:`2079`
Contributed software changes
----------------------------
* None
|
