Replaced the remaining uses of png_size_t with size_t (Cosmin)
Fixed the calculation of row_factor in png_check_chunk_length
(reported by Thuan Pham in SourceForge issue #278)
Added missing parentheses to a macro definition
(suggested by "irwir" in GitHub issue #216)
Optimized png_do_expand_palette for ARM processors.
Improved performance by around 10-22% on a recent ARM Chromebook.
(Contributed by Richard Townsend, ARM Holdings)
Fixed manipulation of machine-specific optimization options.
(Contributed by Vicki Pfau)
Used memcpy instead of manual pointer arithmetic on Intel SSE2.
(Contributed by Samuel Williams)
Fixed build errors with MSVC on ARM64.
(Contributed by Zhijie Liang)
Fixed detection of libm in CMakeLists.
(Contributed by Cameron Cawley)
Fixed incorrect creation of pkg-config file in CMakeLists.
(Contributed by Kyle Bentley)
Fixed the CMake build on Windows MSYS by avoiding symlinks.
Fixed a build warning on OpenBSD.
(Contributed by Theo Buehler)
Fixed various typos in comments.
(Contributed by "luz.paz")
Raised the minimum required CMake version from 3.0.2 to 3.1.
Removed yet more of the vestigial support for pre-ANSI C compilers.
Removed ancient makefiles for ancient systems that have been broken
across all previous libpng-1.6.x versions.
Removed the Y2K compliance statement and the export control
information.
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=111
- update to 1.6.34:
* Removed contrib/pngsuite/i*.png; some of these were incorrect
and caused test failures.
- includes 1.6.33:
* Added PNGMINUS_UNUSED macro to contrib/pngminus/p*.c and added
missing parenthesis in contrib/pngminus/pnm2png.c
* Fixed off-by-one error in png_do_check_palette_indexes()
* Initialize png_handler.row_ptr in libpng_read_fuzzer.cc
to fix shortlived oss-fuzz issue 3234.
* Compute a larger limit on IDAT because some applications write
a deflate buffer for each row
* Use current date (DATE) instead of release-date (RDATE) in last
changed date of contrib/oss-fuzz files.
* Enabled ARM support in CMakeLists.txt
* Fixed incorrect typecast of some arguments to png_malloc() and
png_calloc() that were png_uint_32 instead of png_alloc_size_t
* Use pnglibconf.h.prebuilt when building for ANDROID with cmake
* Initialize memory allocated by png_inflate to zero, using
memset, to stop an oss-fuzz "use of uninitialized value"
detection in png_set_text_2() due to truncated iTXt or zTXt
chunk.
* Initialize memory allocated by png_read_buffer to zero, using
memset, to stop an oss-fuzz "use of uninitialized value"
detection in png_icc_check_tag_table() due to truncated iCCP
chunk.
* Removed redundant tests
* Added an interlaced version of each file in contrib/pngsuite.
* Relocate new memset() call in pngrutil.c
* Add support for loading images with associated alpha in the
Simplified API
* Revert contrib/oss-fuzz/libpng_read_fuzzer.cc to libpng-1.6.32
state
* Initialize png_handler.row_ptr in libpng_read_fuzzer.cc
* Add end_info structure and png_read_end() to the libpng fuzzer
- includes 1.6.32:
* Avoid possible NULL dereference in png_handle_eXIf when
benign_errors are allowed. Avoid leaking the input buffer
"eXIf_buf".
* Eliminated png_ptr->num_exif member from pngstruct.h and added
num_exif to arguments for png_get_eXIf() and png_set_eXIf().
* Added calls to png_handle_eXIf(() in pngread.c and
png_write_eXIf() in pngwrite.c, and made various other fixes
to png_write_eXIf().
* Changed name of png_get_eXIF and png_set_eXIf() to
png_get_eXIf_1() and png_set_eXIf_1(), respectively, to avoid
breaking API compatibility with libpng-1.6.31.
* Updated contrib/libtests/pngunknown.c with eXIf chunk.
* Initialized btoa[] in pngstest.c
* Stop memory leak when returning from png_handle_eXIf() with an
error
* Replaced local eXIf_buf with info_ptr-eXIf_buf in png_handle_eXIf().
* Update libpng.3 and libpng-manual.txt about eXIf functions.
* Restored png_get_eXIf() and png_set_eXIf() to maintain API
compatability.
* Removed png_get_eXIf_1() and png_set_eXIf_1().
* Check length of all chunks except IDAT against user limit to
fix an OSS-fuzz issue (Fixes CVE-2017-12652)
* Check length of IDAT against maximum possible IDAT size,
accounting for height, rowbytes, interlacing and zlib/deflate
overhead.
* Restored png_get_eXIf_1() and png_set_eXIf_1(), because
strlen(eXIf_buf) does not work (the eXIf chunk data can
contain zeroes).
* Revised symlink creation, no longer using deprecated cmake
LOCATION feature
* Fixed five-byte error in the calculation of IDAT maximum
possible size.
* Moved chunk-length check into a png_check_chunk_length()
private function
* Moved bad pngs from tests to contrib/libtests/crashers
* Moved testing of bad pngs into a separate
tests/pngtest-badpngs script
* Added the --xfail (expected FAIL) option to pngtest.c. It
writes XFAIL in the output but PASS for the libpng test.
* Require cmake-3.0.2 in CMakeLists.txt
* Fix "const" declaration info_ptr argument to png_get_eXIf_1()
and the num_exif argument to png_get_eXIf_1()
* Added "eXIf" to "chunks_to_ignore[]" in png_set_keep_unknown_chunks().
* Added huge_IDAT.png and empty_ancillary_chunks.png to
testpngs/crashers.
* Make pngtest --strict, --relax, --xfail options imply -m
(multiple).
* Removed unused chunk_name parameter from png_check_chunk_length().
* Relocated setting free_me for eXIf data, to stop an OSS-fuzz'
leak.
* Initialize profile_header[] in png_handle_iCCP() to fix
OSS-fuzz issue.
* Initialize png_ptr->row_buf[0] to 255 in png_read_row() to fix
OSS-fuzz UMR.
* Attempt to fix a UMR in png_set_text_2() to fix OSS-fuzz issue.
* Increase minimum zlib stream from 9 to 14 in png_handle_iCCP(),
to account for the minimum 'deflate' stream, and relocate the
test to a point after the keyword has been read.
* Check that the eXIf chunk has at least 2 bytes and begins with
"II" or "MM".
* Added a set of "huge_xxxx_chunk.png" files to
contrib/testpngs/crashers, one for each known chunk type, with
length = 2GB-1.
* Check for 0 return from png_get_rowbytes() and added some
(size_t) typecasts in contrib/pngminus/*.c to stop some Coverity
issues (162705, 162706, and 162707).
* Renamed chunks in contrib/testpngs/crashers to avoid having
files whose names differ only in case; this causes problems with
some platforms
* Added contrib/oss-fuzz directory which contains files used by
the oss-fuzz project
- cleanup with spec-cleaner
OBS-URL: https://build.opensuse.org/request/show/570288
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=102
* Guard the definition of _POSIX_SOURCE in pngpriv.h.
* Revised pngpriv.h to work around failure to compile
arm/filter_neon.S.
* Added "Requires: zlib" to libpng.pc.in.
* Added special case for FreeBSD in arm/filter_neon.S.
* Changed "int" to "png_size_t" in intel/filter_sse2.c to prevent
possible integer overflow.
* Added eXIf chunk support.
- remove upstreamed
0001-libpng16-Revised-pngpriv.h-to-use-PNG_VERSION_INFO_O.patch
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=100
Revised documentation of png_get_error_ptr() in the libpng manual.
Document need to check for integer overflow when allocating a pixel
buffer for multiple rows in contrib/gregbook, contrib/pngminus,
example.c, and in the manual (suggested by Jaeseung Choi). This
is similar to the bug reported against pngquant in CVE-2016-5735.
Check for integer overflow in contrib/visupng and contrib/tools/genpng.
Do not double evaluate CMAKE_SYSTEM_PROCESSOR in CMakeLists.txt.
Avoid writing an empty IDAT when the last IDAT exactly fills the
compression buffer (bug report by Brian Baird). This bug was
introduced in libpng-1.6.0.
Add a reference to the libpng.download site in README.
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=94
Moved SSE2 optimization code into the main libpng source directory.
Configure libpng with "configure --enable-intel-sse" or compile
libpng with "-DPNG_INTEL_SSE" in CPPFLAGS to enable it.
Added code for PowerPC VSX optimisation (Vadim Barkov).
Avoid potential overflow of shift operations in png_do_expand() (Aaron Boxer).
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=92
Fixed handling zero length IDAT in pngfix (bug report by Agostino Sarubbo,
bugfix by John Bowler).
Do not issue a png_error() on read in png_set_pCAL() because
png_handle_pCAL has allocated memory that libpng needs to free.
Issue a png_benign_error instead of a png_error on ADLER32 mismatch
while decoding compressed data chunks.
Changed PNG_ZLIB_VERNUM to ZLIB_VERNUM in pngpriv.h, pngstruct.h, and
pngrutil.c.
If CRC handling of critical chunks has been set to PNG_CRC_QUIET_USE,
ignore the ADLER32 checksum in the IDAT chunk as well as the chunk CRCs.
Issue png_benign_error() on ADLER32 checksum mismatch instead of
png_error().
Updated the documentation about CRC and ADLER32 handling.
Fixed offsets in contrib/intel/intel_sse.patch
Changed integer constant 4294967294 to unsigned 4294967294U in pngconf.h
to avoid a signed/unsigned compare in the preprocessor.
Use zlib-1.2.8.1 inflateValidate() instead of inflateReset2() to
optionally avoid ADLER32 evaluation.
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=86
Added a png_image_write_to_memory() API and a number of assist macros
to allow an application that uses the simplified API write to bypass
stdio and write directly to memory.
Relaxed limit checks on gamma values in pngrtran.c. As suggested in
the comments gamma values outside the range currently permitted
by png_set_alpha_mode are useful for HDR data encoding. These values
are already permitted by png_set_gamma so it is reasonable caution to
extend the png_set_alpha_mode range as HDR imaging systems are starting
to emerge.
Restored "& 0xff" in png_save_uint_16() and png_save_uint_32() that
were accidentally removed from libpng-1.6.17.
Changed PNG_INFO_cHNK and PNG_FREE_cHNK from 0xnnnn to 0xnnnnU in png.h
(Robert C. Seacord).
Added INTEL-SSE2 support (Mike Klein and Matt Sarett, Google, Inc.).
SSE filter speed improvements for bpp=3:
memcpy-free implementations of load3() / store3().
Added PNG_FAST_FILTERS macro (defined as
PNG_FILTER_NONE|PNG_FILTER_SUB|PNG_FILTER_UP).
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=79
Avoid potential pointer overflow/underflow in png_handle_sPLT() and
png_handle_pCAL() (Bug report by John Regehr).
Fixed incorrect implementation of png_set_PLTE() that uses png_ptr
not info_ptr, that left png_set_PLTE() open to the CVE-2015-8126
vulnerability.
Backported tests from libpng-1.7.0beta69.
Fixed an error in handling of bad zlib CMINFO field in pngfix, found by
American Fuzzy Lop, reported by Brian Carpenter. inflate() doesn't
immediately fault a bad CMINFO field; instead a 'too far back' error
happens later (at least some times). pngfix failed to limit CMINFO to
the allowed values but then assumed that window_bits was in range,
triggering an assert. The bug is mostly harmless; the PNG file cannot
be fixed.
In libpng 1.6 zlib initialization was changed to use the window size
in the zlib stream, not a fixed value. This causes some invalid images,
where CINFO is too large, to display 'correctly' if the rest of the
data is valid. This provides a workaround for zlib versions where the
error arises (ones that support the API change to use the window size
in the stream).
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=75
Fixed potential leak of png_pixels in contrib/pngminus/pnm2png.c
Fixed uninitialized variable in contrib/gregbook/rpng2-x.c
Fixed the recently reported 1's complement security issue.
Fixed png_save_int_32 when int is not 2's complement by replacing
the value that is illegal in the PNG spec, in both signed and
unsigned values, with 0.
etc., see ANNOUNCE and CHANGES for details
- removed: libpng-rgb_to_gray-checks.patch (upstreamed)
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=73
Corrected the width limit calculation in png_check_IHDR().
Removed user limits from pngfix. Also pass NULL pointers to
png_read_row to skip the unnecessary row de-interlace stuff.
Implement previously untested cases of libpng transforms in pngvalid.c
Fixed byte order in 2-byte filler, in png_do_read_filler().
Made the check for out-of-range values in png_set_tRNS() detect
values that are exactly 2^bit_depth, and work on 16-bit platforms.
Merged some parts of libpng-1.6.17beta01 and libpng-1.7.0beta47.
Added #ifndef __COVERITY__ where needed in png.c, pngrutil.c and
pngset.c to avoid warnings about dead code.
Do not build png_product2() when it is unused.
Display user limits in the output from pngtest.
Eliminated the PNG_SAFE_LIMITS macro and restored the 1-million-column
and 1-million-row default limits in pnglibconf.dfa, that can be reset
by the user at build time or run time. This provides a more robust
defense against DOS and as-yet undiscovered overflows.
Added PNG_WRITE_CUSTOMIZE_COMPRESSION_SUPPORTED macro, on by default.
Allow user to call png_get_IHDR() with NULL arguments (Reuben Hawkins).
Moved png_set_filter() prototype into a PNG_WRITE_SUPPORTED block
of png.h.
Free the unknown_chunks structure even when it contains no data.
Fixed simplified 8-bit-linear to sRGB alpha. The calculated alpha
value was wrong. It's not clear if this affected the final stored
value; in the obvious code path the upper and lower 8-bits of the
alpha value were identical and the alpha was truncated to 8-bits
rather than dividing by 257 (John Bowler).
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=67
* Avoid out-of-bounds memory access in png_user_version_check().
* Fixed incorrect handling of the iTXt compression.
* Free all allocated memory in pngimage.
* Fixed array size calculations to avoid warnings.
etc. see ANNOUNCE
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=61
Bookkeeping: Moved functions around (no changes). Moved transform
function definitions before the place where they are called so that
they can be masde static. Move the intrapixel functions and the
grayscale palette builder out of the png?tran.c files. The latter
isn't a transform function and is no longer used internally, and the
former MNG specific functions are better placed in pngread/pngwrite.c
Made transform implementation functions static. This makes the internal
functions called by png_do_{read|write}_transformations static. On an
x86-64 DLL build (Gentoo Linux) this reduces the size of the text
segment of the DLL by 1208 bytes, about 0.6%. It also simplifies
maintenance by removing the declarations from pngpriv.h and allowing
easier changes to the internal interfaces.
Rebuilt configure scripts with automake-1.14.1 and autoconf-2.69
in the tar distributions.
Added checks for libpng 1.5 to pngvalid.c. This supports the use of
this version of pngvalid in libpng 1.5
Merged with pngvalid.c from libpng-1.7 changes to create a single
pngvalid.c
Merged pngrio.c, pngtrans.c, pngwio.c, and pngerror.c with libpng-1.7.0
Merged libpng-1.7.0 changes to make no-interlace configurations work
with test programs.
Revised pngvalid.c to support libpng 1.5, which does not support the
PNG_MAXIMUM_INFLATE_WINDOW option, so #define it out when appropriate
in pngvalid.c
Allow unversioned links created on install to be disabled in configure.
In configure builds 'make install' changes/adds links like png.h
and libpng.a to point to the newly installed, versioned, files (e.g.
libpng17/png.h and libpng17.a). Three new configure options and some
rearrangement of Makefile.am allow creation of these links to be
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=51
Changed #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED in pngpread.c to
#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED to be consistent with
what is in pngpriv.h.
Moved prototype for png_handle_unknown() in pngpriv.h outside of
the #ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED/#endif block.
Enabled WRITE_INVERT and WRITE_PACK in contrib/pngminim/encoder.
Fixed pngvalid 'fail' function declaration on the Intel C Compiler.
This reverts to the previous 'static' implementation and works round
the 'unused static function' warning by using PNG_UNUSED().
Handle zero-length PLTE chunk or NULL palette with png_error()
instead of png_chunk_report(), which by default issues a warning
rather than an error, leading to later reading from a NULL pointer
(png_ptr->palette) in png_do_expand_palette(). This is CVE-2013-6954
and VU#650142.
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=49
* Revised unknown chunk code to correct several bugs in the
NO_SAVE_/NO_WRITE combination
* Check user callback behavior in pngunknown.c. Previous versions
compiled if SAVE_UNKNOWN was not available but did nothing since the
callback was never implemented.
* Merged pngunknown.c with 1.7 version and back ported 1.7
improvements/fixes
* Revised pngvalid to generate size images with as many filters as
it can manage, limited by the number of rows.
* ARM improvements/fixes
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=45
* Added information about png_set_options() to the manual.
* Delay calling png_init_filter_functions() until a row with nonzero
filter is found.
* Fixed inconsistent conditional compilation of
png_chunk_unknown_handling() prototype, definition, and usage.
Made it depend on PNG_HANDLE_AS_UNKNOWN_SUPPORTED everywhere.
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=41
Updated documentation of 1.5.x to 1.6.x changes in iCCP chunk handling.
Fixed incorrect warning of excess deflate data. End condition - the
warning would be produced if the end of the deflate stream wasn't read
in the last row. The warning is harmless.
Corrected the test on user transform changes on read. It was in the
png_set of the transform function, but that doesn't matter unless the
transform function changes the rowbuf size, and that is only valid if
transform_info is called.
Corrected a misplaced closing bracket in contrib/libtests/pngvalid.c
(Flavio Medeiros).
Corrected length written to uncompressed iTXt chunks (Samuli Suominen).
Added contrib/tools/fixitxt.c, to repair the erroneous iTXt chunk length
written by libpng-1.6.0 and 1.6.1.
Disallow storing sRGB information when the sRGB is not supported.
Merge pngtest.c with libpng-1.7.0
OBS-URL: https://build.opensuse.org/package/show/graphics/libpng16?expand=0&rev=27
