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<HTML>
<HEAD>
<TITLE>
Changes in TIFF v3.9.0
</TITLE>
</HEAD>
<BODY BGCOLOR=white>
<FONT FACE="Helvetica, Arial, Sans">
<FONT FACE="Helvetica, Arial, Sans">
<BASEFONT SIZE=4>
<B><FONT SIZE=+3>T</FONT>IFF <FONT SIZE=+2>C</FONT>HANGE <FONT SIZE=+2>I</FONT>NFORMATION</B>
<BASEFONT SIZE=3>
<UL>
<HR SIZE=4 WIDTH=65% ALIGN=left>
<B>Current Version</B>: v3.9.0<BR>
<B>Previous Version</B>: <A HREF=v3.9.0beta.html>v3.9.0beta</a><BR>
<B>Master FTP Site</B>: <A HREF="ftp://download.osgeo.org/libtiff">
download.osgeo.org</a>, directory pub/libtiff</A><BR>
<B>Master HTTP Site</B>: <A HREF="http://www.simplesystems.org/libtiff/">
http://www.simplesystems.org/libtiff/</a>
<HR SIZE=4 WIDTH=65% ALIGN=left>
</UL>
<P>
This document describes the changes made to the software between the
<I>previous</I> and <I>current</I> 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:
<UL>
<LI><A HREF="#hightlights">Major Changes</A>
<LI><A HREF="#configure">Changes in the software configuration</A>
<LI><A HREF="#libtiff">Changes in libtiff</A>
<LI><A HREF="#tools">Changes in the tools</A>
<LI><A HREF="#contrib">Changes in the contrib area</A>
</UL>
<p>
<P><HR WIDTH=65% ALIGN=left>
<!--------------------------------------------------------------------------->
<A NAME="highlights"><B><FONT SIZE=+3>M</FONT>AJOR CHANGES:</B></A>
<UL>
<li> 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.
</UL>
<P><HR WIDTH=65% ALIGN=left>
<!--------------------------------------------------------------------------->
<A NAME="configure"><B><FONT SIZE=+3>C</FONT>HANGES IN THE SOFTWARE CONFIGURATION:</B></A>
<UL>
<li> Updated autotools: Autoconf 2.64, Automake 1.11, libtool
2.2.6.
<li> Enabled support for Automake silent build rules
(--enable-silent-rules or 'make V=0')
<li> Enabled support for Automake colorized tests.
<li> Added detection of a 64-bit integer type so that bundled
utilities (like 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.
</UL>
<P><HR WIDTH=65% ALIGN=left>
<!--------------------------------------------------------------------------->
<A NAME="libtiff"><B><FONT SIZE=+3>C</FONT>HANGES IN LIBTIFF:</B></A>
<UL>
<li> libtiff/{Makefile.am, Makefile.v}: Do not distribute
tiffconf.h, remove tif_config.h/tiffconf.h during cleaning. As
per bug <a
href="http://bugzilla.remotesensing.org/show_bug.cgi?id=1573">http://bugzilla.remotesensing.org/show_bug.cgi?id=1573</a>
<li> tif_dirinfo.c: _TIFFMergeFields() now only merges in
field definitions that are missing. Existing definitions are
silently ignored. (Bug #1585)
<li> tif_write.c: Rip out the fancy logic in
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 stripbytecount[] values
unaltered till 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.
<li> tif_dirwrite.c: Try to avoid writing out a full
readbuffer of tile data when writing the directory just
because we have 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
autotest/gcore/tif_write.py test 7.
<li> tif_predict.c: use working buffer in PredictorEncodeTile
to avoid modifying callers buffer. <a
href="http://trac.osgeo.org/gdal/ticket/1965">http://trac.osgeo.org/gdal/ticket/1965</a>
<li> tif_predict.c/h, tif_lzw.c, tif_zip.c: Improvements so
that predictor based encoding and decoding works in read-write
update mode properly. <a
href="http://trac.osgeo.org/gdal/ticket/1948">http://trac.osgeo.org/gdal/ticket/1948</a>
<li> configure.com, libtiff/tif_vms.c: Better OpenVMS
support. Patches from Alexey Chupahin.
<li> tif_fax3.c: fix leak of FAXCS state (per bug 1603).
<li> tif_fax3.c: Make find0span() and find1span() non-inline
to make MSVC 6.0 compiler happy.
<li> tif_codec.c: Avoid NULL pointer dereferencing for exotic
compression codec codes.
<li> tif_dirread.c: zero tif->tif_dir after freeing the
directory in TIFFReadCustomDirectory(). I don't exactly
remember why this was important.
<li> tif_dirwrite.c: Fix potential memory leak writing large
double tags.
<li> tif_dirread.c: Fix unchecked malloc result.
<li> libtiff/tif_lzw.c: Properly zero out the codetable. As
per bug <a
href="http://bugzilla.maptools.org/show_bug.cgi?id=1929">http://bugzilla.maptools.org/show_bug.cgi?id=1929</a>
<li> libtiff/tif_lzw.c: Properly zero out the string
table. Fixes CVE-2008-2327 security issue.
<li> libtiff/tif_jbig.c: Support the JBIG-KIT 2.0
(compatibility with the older versions retained).
<li> libtiff/tif_getimage.c,tiffio.h: removed all use of
UaToAa and Bitmap16to8 arrays in TIFFRGBAImage structure to
restore ABI compatability. These were just an attempt to
speed up processing with precalculated tables. <a
href="http://bugzilla.maptools.org/show_bug.cgi?id=1979">http://bugzilla.maptools.org/show_bug.cgi?id=1979</a>
<li> libtiff/tif_codec.c: Avoid printing c->name if it does not exist.
<li> libtiff/tif_getimage.c, tiffio.h: More ABI corrections.
Removed SubsamplingHor/Ver from TIFFRGBAImage structure. <a
href="http://bugzilla.maptools.org/show_bug.cgi?id=1980">http://bugzilla.maptools.org/show_bug.cgi?id=1980</a>
<li> libtiff/tif_jpeg.c: Avoid errors if the application
writes a full strip for the last partial strip in a jpeg
compressed file. <a
href="http://bugzilla.maptools.org/show_bug.cgi?id=1981">http://bugzilla.maptools.org/show_bug.cgi?id=1981</a>
<li> libtiff/tiffio.h: GCC will now validate format
specifications for TIFFError(), TIFFErrorExt(), TIFFWarning(),
and TIFFWarningExt() in order to reveal bugs. Cleaned up
resulting warnings throughout for 32 bit build only.
<li> libtiff/tiffiop.h: Add private type declarations for
int64, and uint64 so that bundled utilities (like tiffcrop)
can use it when necessary.
<li> libtiff/tif_predict.c: Add support for 32bit integer
horz. predictors.
<a href="http://bugzilla.maptools.org/show_bug.cgi?id=1911">http://bugzilla.maptools.org/show_bug.cgi?id=1911</a>
<li> libtiff/tif_luv.c: Fix handling of tiled logluv images.
<a
href="http://bugzilla.maptools.org/show_bug.cgi?id=2005">http://bugzilla.maptools.org/show_bug.cgi?id=2005</a>
<li> libtiff/tif_write.c: do not override the planar
configuration to be contig for one sample files if planar
configuration is already set. <a
href="http://bugzilla.maptools.org/show_bug.cgi?id=2057">http://bugzilla.maptools.org/show_bug.cgi?id=2057</a>
<li> libtiff/tif_lzw.c: Fix buffer underflow bug. <a
href="http://bugzilla.maptools.org/show_bug.cgi?id=2065">http://bugzilla.maptools.org/show_bug.cgi?id=2065</a>
<li> libtiff/tif_luv.c: correct return codes from encoderow to
be 1 on success instead of zero. <a
href="http://bugzilla.maptools.org/show_bug.cgi?id=2069">http://bugzilla.maptools.org/show_bug.cgi?id=2069</a>
<li> libtiff/tif_print.c (TIFFPrintDirectory): Applied patch
for "tag error may cause segfault in tif_print.c." <a
href="http://bugzilla.maptools.org/show_bug.cgi?id=1896">http://bugzilla.maptools.org/show_bug.cgi?id=1896</a>
</UL>
<P><HR WIDTH=65% ALIGN=left>
<!-------------------------------------------------------------------------->
<A NAME="tools"><B><FONT SIZE=+3>C</FONT>HANGES IN THE TOOLS:</B></A>
<UL>
<li> tools/tiff2pdf.c: Fixed setting of alpha value per report
on list.
<li> tools/tiffsplit.c: Get rid of unsafe strcpy()/strcat()
calls when doing the filename/path construction.
<li> tools/tiff2pdf.c: More appropriate format string in
t2p_write_pdf_string(); avoid signed/unsigned mismatch.
<li> tools/tiffsplit.c: Use dynamically allocated array
instead of static when constructing output file names.
<li> tools/tiffcrop.c, man/tiffcrop.1: Incorporated
significant functionality update from Richard Nolde.
<li> 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.
<li> tools/tiff2ps.c: Remove spurious message printed to
stderr.
<li> tools/tiffsplit.c: fix sampleformat to be shortv instead
of longv.
<li> tools/{rgb2ycbcr.c, tiff2rgba.c}: Applied patch for
CVE-2009-2347 libtiff: integer overflows in various
inter-color space conversion tools. <a
href="http://bugzilla.maptools.org/show_bug.cgi?id=2079">http://bugzilla.maptools.org/show_bug.cgi?id=2079</a>
</UL>
<P><HR WIDTH=65% ALIGN=left>
<!--------------------------------------------------------------------------->
<A NAME="contrib"><B><FONT SIZE=+3>C</FONT>HANGES IN THE CONTRIB AREA:</B></A>
<UL>
<li> None
</UL>
Last updated $Date: 2016-09-25 20:05:46 $.
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