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Update bundled libpng to version 1.6.39 (20 nov 2022)

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This commit is contained in:
ManoloFLTK 2023-01-17 09:38:53 +01:00
parent b804c4b72c
commit 39eba133de
16 changed files with 147 additions and 87 deletions
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3
README.bundled-libs.txt
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@ -21,7 +21,7 @@ Current versions of bundled libraries (as of Jan 16, 2023):
--------------------------------------------------------------------------
jpeg jpeg-9d 2020-01-12 1.4.0
nanosvg abcd277ea4 [1] 2022-12-22 1.4.0
png libpng-1.6.37 2019-04-14 1.4.0
png libpng-1.6.39 2022-11-20 1.4.0
zlib zlib-1.2.13 2022-10-13 1.4.0
libdecor 3f3e5e1d [2] 2022-12-29 1.4.0
--------------------------------------------------------------------------
@ -178,6 +178,7 @@ png:
Download the latest libpng sources, `cd' to /path-to/libpng and run
$ ./configure --with-libpng-prefix=fltk_
$ make
This creates the header files 'pnglibconf.h' and 'pngprefix.h'
with the 'fltk_' symbol prefix.

32
png/CHANGES
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@ -2295,7 +2295,7 @@ Version 1.4.0beta58 [May 14, 2009]
Clarified usage of sig_bit versus sig_bit_p in example.c (Vincent Torri)
Version 1.4.0beta59 [May 15, 2009]
Reformated sources in libpng style (3-space intentation, comment format)
Reformated sources in libpng style (3-space indentation, comment format)
Fixed typo in libpng docs (PNG_FILTER_AVE should be PNG_FILTER_AVG)
Added sections about the git repository and our coding style to the
documentation
@ -3886,7 +3886,7 @@ Version 1.6.0beta06 [January 24, 2012]
Version 1.6.0beta07 [January 28, 2012]
Eliminated Intel icc/icl compiler warnings. The Intel (GCC derived)
compiler issues slightly different warnings from those issued by the
current vesions of GCC. This eliminates those warnings by
current versions of GCC. This eliminates those warnings by
adding/removing casts and small code rewrites.
Updated configure.ac from autoupdate: added --enable-werror option.
Also some layout regularization and removal of introduced tab characters
@ -4052,7 +4052,7 @@ Version 1.6.0beta16 [March 6, 2012]
(in fact this is harmless, but the PNG data produced may be sub-optimal).
Version 1.6.0beta17 [March 10, 2012]
Fixed PNG_LIBPNG_BUILD_BASE_TYPE definition.
Fixed PNG_LIBPNG_BUILD_BASE_TYPE definition.
Reject all iCCP chunks after the first, even if the first one is invalid.
Deflate/inflate was reworked to move common zlib calls into single
functions [rw]util.c. A new shared keyword check routine was also added
@ -4962,7 +4962,7 @@ Version 1.6.13beta01 [July 4, 2014]
Changed "if defined(__ARM_NEON__)" to
"if (defined(__ARM_NEON__) || defined(__ARM_NEON))" (James Wu).
Fixed clang no-warning builds: png_digit was defined but never used.
Version 1.6.13beta02 [July 21, 2014]
Fixed an incorrect separator ("/" should be "\") in scripts/makefile.vcwin32
(bug report from Wolfgang S. Kechel). Bug was introduced in libpng-1.6.11.
@ -5453,7 +5453,7 @@ Version 1.6.21beta01 [December 11, 2015]
Version 1.6.21beta02 [December 14, 2015]
Moved png_check_keyword() from pngwutil.c to pngset.c
Removed LE/BE dependencies in pngvalid, to 'fix' the current problem
in the BigEndian tests by not testing it, making the BE code the same
in the BigEndian tests by not testing it, making the BE code the same
as the LE version.
Fixes to pngvalid for various reduced build configurations (eliminate unused
statics) and a fix for the case in rgb_to_gray when the digitize option
@ -5517,7 +5517,7 @@ Version 1.6.22beta03 [March 9, 2016]
Added a common-law trademark notice and export control information
to the LICENSE file, png.h, and the man page.
Restored "& 0xff" in png_save_uint_16() and png_save_uint_32() that
were accidentally removed from libpng-1.6.17.
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).
Removed dubious "#if INT_MAX" test from png.h that was added to
@ -5950,7 +5950,7 @@ Version 1.6.32beta09 [August 3, 2017]
Require cmake-2.8.8 in CMakeLists.txt. Revised symlink creation,
no longer using deprecated cmake LOCATION feature (Clifford Yapp).
Fixed five-byte error in the calculation of IDAT maximum possible size.
Version 1.6.32beta10 [August 5, 2017]
Moved chunk-length check into a png_check_chunk_length() private
function (Suggested by Max Stepin).
@ -6103,6 +6103,24 @@ Version 1.6.37 [April 14, 2019]
Added makefiles for AddressSanitizer-enabled builds.
Cleaned up various makefiles.
Version 1.6.38 [September 14, 2022]
Added configurations and scripts for continuous integration.
Fixed various errors in the handling of tRNS, hIST and eXIf.
Implemented many stability improvements across all platforms.
Updated the internal documentation.
Version 1.6.39 [November 20, 2022]
Changed the error handler of oversized chunks (i.e. larger than
PNG_USER_CHUNK_MALLOC_MAX) from png_chunk_error to png_benign_error.
Fixed a buffer overflow error in contrib/tools/pngfix.
Fixed a memory leak (CVE-2019-6129) in contrib/tools/pngcp.
Disabled the ARM Neon optimizations by default in the CMake file,
following the default behavior of the configure script.
Allowed configure.ac to work with the trunk version of autoconf.
Removed the support for "install" targets from the legacy makefiles;
removed the obsolete makefile.cegcc.
Cleaned up the code and updated the internal documentation.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net.
Subscription is required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement

31
png/arm/arm_init.c
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@ -1,7 +1,7 @@
/* arm_init.c - NEON optimised filter functions
*
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 2014,2016 Glenn Randers-Pehrson
* Written by Mans Rullgard, 2011.
*
@ -10,9 +10,7 @@
* and license in png.h
*/
/* Below, after checking __linux__, various non-C90 POSIX 1003.1 functions are
* called.
*/
/* This module requires POSIX 1003.1 functions. */
#define _POSIX_SOURCE 1
#include "../pngpriv.h"
@ -33,21 +31,26 @@
* has partial support is contrib/arm-neon/linux.c - a generic Linux
* implementation which reads /proc/cpufino.
*/
#include <signal.h> /* for sig_atomic_t */
#ifndef PNG_ARM_NEON_FILE
# ifdef __linux__
# define PNG_ARM_NEON_FILE "contrib/arm-neon/linux.c"
# if defined(__aarch64__) || defined(_M_ARM64)
/* ARM Neon is expected to be unconditionally available on ARM64. */
# error "PNG_ARM_NEON_CHECK_SUPPORTED must not be defined on ARM64"
# elif defined(__ARM_NEON__) || defined(__ARM_NEON)
/* ARM Neon is expected to be available on the target CPU architecture. */
# error "PNG_ARM_NEON_CHECK_SUPPORTED must not be defined on this CPU arch"
# elif defined(__linux__)
# define PNG_ARM_NEON_FILE "contrib/arm-neon/linux.c"
# else
# error "No support for run-time ARM Neon checking; use compile-time options"
# endif
#endif
#ifdef PNG_ARM_NEON_FILE
#include <signal.h> /* for sig_atomic_t */
static int png_have_neon(png_structp png_ptr);
#include PNG_ARM_NEON_FILE
#else /* PNG_ARM_NEON_FILE */
# error "PNG_ARM_NEON_FILE undefined: no support for run-time ARM NEON checks"
#endif /* PNG_ARM_NEON_FILE */
#ifdef PNG_ARM_NEON_FILE
# include PNG_ARM_NEON_FILE
#endif
#endif /* PNG_ARM_NEON_CHECK_SUPPORTED */
#ifndef PNG_ALIGNED_MEMORY_SUPPORTED

2
png/arm/filter_neon_intrinsics.c
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@ -18,7 +18,7 @@
/* This code requires -mfpu=neon on the command line: */
#if PNG_ARM_NEON_IMPLEMENTATION == 1 /* intrinsics code from pngpriv.h */
#if defined(_MSC_VER) && defined(_M_ARM64)
#if defined(_MSC_VER) && !defined(__clang__) && defined(_M_ARM64)
# include <arm64_neon.h>
#else
# include <arm_neon.h>

14
png/arm/palette_neon_intrinsics.c
View File

@ -14,7 +14,7 @@
#if PNG_ARM_NEON_IMPLEMENTATION == 1
#if defined(_MSC_VER) && defined(_M_ARM64)
#if defined(_MSC_VER) && !defined(__clang__) && defined(_M_ARM64)
# include <arm64_neon.h>
#else
# include <arm_neon.h>
@ -30,8 +30,6 @@ png_riffle_palette_neon(png_structrp png_ptr)
int num_trans = png_ptr->num_trans;
int i;
png_debug(1, "in png_riffle_palette_neon");
/* Initially black, opaque. */
uint8x16x4_t w = {{
vdupq_n_u8(0x00),
@ -40,6 +38,8 @@ png_riffle_palette_neon(png_structrp png_ptr)
vdupq_n_u8(0xff),
}};
png_debug(1, "in png_riffle_palette_neon");
/* First, riffle the RGB colours into an RGBA8 palette.
* The alpha component is set to opaque for now.
*/
@ -65,11 +65,12 @@ png_do_expand_palette_rgba8_neon(png_structrp png_ptr, png_row_infop row_info,
png_uint_32 row_width = row_info->width;
const png_uint_32 *riffled_palette =
(const png_uint_32 *)png_ptr->riffled_palette;
const png_int_32 pixels_per_chunk = 4;
int i;
const png_uint_32 pixels_per_chunk = 4;
png_uint_32 i;
png_debug(1, "in png_do_expand_palette_rgba8_neon");
PNG_UNUSED(row)
if (row_width < pixels_per_chunk)
return 0;
@ -109,10 +110,11 @@ png_do_expand_palette_rgb8_neon(png_structrp png_ptr, png_row_infop row_info,
png_uint_32 row_width = row_info->width;
png_const_bytep palette = (png_const_bytep)png_ptr->palette;
const png_uint_32 pixels_per_chunk = 8;
int i;
png_uint_32 i;
png_debug(1, "in png_do_expand_palette_rgb8_neon");
PNG_UNUSED(row)
if (row_width <= pixels_per_chunk)
return 0;

16
png/makedepend
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@ -144,3 +144,19 @@ pngwutil.o: pnglibconf.h
pngwutil.o: pngprefix.h
pngwutil.o: pngpriv.h
pngwutil.o: pngstruct.h
powerpc/filter_vsx_intrinsics.o: png.h
powerpc/filter_vsx_intrinsics.o: pngconf.h
powerpc/filter_vsx_intrinsics.o: pngdebug.h
powerpc/filter_vsx_intrinsics.o: pnginfo.h
powerpc/filter_vsx_intrinsics.o: pnglibconf.h
powerpc/filter_vsx_intrinsics.o: pngprefix.h
powerpc/filter_vsx_intrinsics.o: pngpriv.h
powerpc/filter_vsx_intrinsics.o: pngstruct.h
powerpc/powerpc_init.o: png.h
powerpc/powerpc_init.o: pngconf.h
powerpc/powerpc_init.o: pngdebug.h
powerpc/powerpc_init.o: pnginfo.h
powerpc/powerpc_init.o: pnglibconf.h
powerpc/powerpc_init.o: pngprefix.h
powerpc/powerpc_init.o: pngpriv.h
powerpc/powerpc_init.o: pngstruct.h

18
png/png.c
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@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
* Copyright (c) 2018-2019 Cosmin Truta
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -14,7 +14,7 @@
#include "pngpriv.h"
/* Generate a compiler error if there is an old png.h in the search path. */
typedef png_libpng_version_1_6_37 Your_png_h_is_not_version_1_6_37;
typedef png_libpng_version_1_6_39 Your_png_h_is_not_version_1_6_39;
#ifdef __GNUC__
/* The version tests may need to be added to, but the problem warning has
@ -720,7 +720,7 @@ png_init_io(png_structrp png_ptr, png_FILE_p fp)
*
* Where UNSIGNED_MAX is the appropriate maximum unsigned value, so when the
* negative integral value is added the result will be an unsigned value
* correspnding to the 2's complement representation.
* corresponding to the 2's complement representation.
*/
void PNGAPI
png_save_int_32(png_bytep buf, png_int_32 i)
@ -752,7 +752,7 @@ png_convert_to_rfc1123_buffer(char out[29], png_const_timep ptime)
{
size_t pos = 0;
char number_buf[5] = ""; /* enough for a four-digit year */ /* FLTK Issue #296 */
char number_buf[5]; /* enough for a four-digit year */
# define APPEND_STRING(string) pos = png_safecat(out, 29, pos, (string))
# define APPEND_NUMBER(format, value)\
@ -815,8 +815,8 @@ png_get_copyright(png_const_structrp png_ptr)
return PNG_STRING_COPYRIGHT
#else
return PNG_STRING_NEWLINE \
"libpng version 1.6.37" PNG_STRING_NEWLINE \
"Copyright (c) 2018-2019 Cosmin Truta" PNG_STRING_NEWLINE \
"libpng version 1.6.39" PNG_STRING_NEWLINE \
"Copyright (c) 2018-2022 Cosmin Truta" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson" \
PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
@ -1843,12 +1843,12 @@ png_icc_profile_error(png_const_structrp png_ptr, png_colorspacerp colorspace,
# ifdef PNG_WARNINGS_SUPPORTED
else
{
char number[PNG_NUMBER_BUFFER_SIZE]; /* +24 = 114*/
char number[PNG_NUMBER_BUFFER_SIZE]; /* +24 = 114 */
pos = png_safecat(message, (sizeof message), pos,
png_format_number(number, number+(sizeof number),
PNG_NUMBER_FORMAT_x, value));
pos = png_safecat(message, (sizeof message), pos, "h: "); /*+2 = 116*/
pos = png_safecat(message, (sizeof message), pos, "h: "); /* +2 = 116 */
}
# endif
/* The 'reason' is an arbitrary message, allow +79 maximum 195 */
@ -2710,7 +2710,7 @@ png_check_IHDR(png_const_structrp png_ptr,
int /* PRIVATE */
png_check_fp_number(png_const_charp string, size_t size, int *statep,
png_size_tp whereami)
size_t *whereami)
{
int state = *statep;
size_t i = *whereami;

14
png/pngget.c
View File

@ -1151,7 +1151,7 @@ png_get_unknown_chunks(png_const_structrp png_ptr, png_inforp info_ptr,
#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
png_byte PNGAPI
png_get_rgb_to_gray_status (png_const_structrp png_ptr)
png_get_rgb_to_gray_status(png_const_structrp png_ptr)
{
return (png_byte)(png_ptr ? png_ptr->rgb_to_gray_status : 0);
}
@ -1192,27 +1192,27 @@ png_get_compression_buffer_size(png_const_structrp png_ptr)
/* These functions were added to libpng 1.2.6 and were enabled
* by default in libpng-1.4.0 */
png_uint_32 PNGAPI
png_get_user_width_max (png_const_structrp png_ptr)
png_get_user_width_max(png_const_structrp png_ptr)
{
return (png_ptr ? png_ptr->user_width_max : 0);
}
png_uint_32 PNGAPI
png_get_user_height_max (png_const_structrp png_ptr)
png_get_user_height_max(png_const_structrp png_ptr)
{
return (png_ptr ? png_ptr->user_height_max : 0);
}
/* This function was added to libpng 1.4.0 */
png_uint_32 PNGAPI
png_get_chunk_cache_max (png_const_structrp png_ptr)
png_get_chunk_cache_max(png_const_structrp png_ptr)
{
return (png_ptr ? png_ptr->user_chunk_cache_max : 0);
}
/* This function was added to libpng 1.4.1 */
png_alloc_size_t PNGAPI
png_get_chunk_malloc_max (png_const_structrp png_ptr)
png_get_chunk_malloc_max(png_const_structrp png_ptr)
{
return (png_ptr ? png_ptr->user_chunk_malloc_max : 0);
}
@ -1221,13 +1221,13 @@ png_get_chunk_malloc_max (png_const_structrp png_ptr)
/* These functions were added to libpng 1.4.0 */
#ifdef PNG_IO_STATE_SUPPORTED
png_uint_32 PNGAPI
png_get_io_state (png_const_structrp png_ptr)
png_get_io_state(png_const_structrp png_ptr)
{
return png_ptr->io_state;
}
png_uint_32 PNGAPI
png_get_io_chunk_type (png_const_structrp png_ptr)
png_get_io_chunk_type(png_const_structrp png_ptr)
{
return png_ptr->chunk_name;
}

6
png/pnglibconf.h
View File

@ -3,15 +3,15 @@
**
** This file must be generated on Linux in a libpng distribution using:
** $ ./configure --with-libpng-prefix=fltk_
**
** $ make
** All lines including the 'fltk_' prefix must be upgraded with libpng.
*/
/* pnglibconf.h - library build configuration */
/* libpng version 1.6.37 */
/* libpng version 1.6.39 */
/* Copyright (c) 2018-2019 Cosmin Truta */
/* Copyright (c) 2018-2022 Cosmin Truta */
/* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson */
/* This code is released under the libpng license. */

11
png/pngprefix.h
View File

@ -60,6 +60,13 @@
#define png_do_read_interlace fltk_png_do_read_interlace
#define png_do_write_interlace fltk_png_do_write_interlace
#define png_read_filter_row fltk_png_read_filter_row
#define png_read_filter_row_up_neon fltk_png_read_filter_row_up_neon
#define png_read_filter_row_sub3_neon fltk_png_read_filter_row_sub3_neon
#define png_read_filter_row_sub4_neon fltk_png_read_filter_row_sub4_neon
#define png_read_filter_row_avg3_neon fltk_png_read_filter_row_avg3_neon
#define png_read_filter_row_avg4_neon fltk_png_read_filter_row_avg4_neon
#define png_read_filter_row_paeth3_neon fltk_png_read_filter_row_paeth3_neon
#define png_read_filter_row_paeth4_neon fltk_png_read_filter_row_paeth4_neon
#define png_write_find_filter fltk_png_write_find_filter
#define png_read_IDAT_data fltk_png_read_IDAT_data
#define png_read_finish_IDAT fltk_png_read_finish_IDAT
@ -163,4 +170,8 @@
#define png_safe_warning fltk_png_safe_warning
#define png_safe_execute fltk_png_safe_execute
#define png_image_error fltk_png_image_error
#define png_init_filter_functions_neon fltk_png_init_filter_functions_neon
#define png_check_keyword fltk_png_check_keyword
#define png_riffle_palette_neon fltk_png_riffle_palette_neon
#define png_do_expand_palette_rgba8_neon fltk_png_do_expand_palette_rgba8_neon
#define png_do_expand_palette_rgb8_neon fltk_png_do_expand_palette_rgb8_neon

8
png/pngread.c
View File

@ -3452,7 +3452,6 @@ png_image_read_background(png_voidp argument)
for (pass = 0; pass < passes; ++pass)
{
png_bytep row = png_voidcast(png_bytep, display->first_row);
unsigned int startx, stepx, stepy;
png_uint_32 y;
@ -3557,9 +3556,6 @@ png_image_read_background(png_voidp argument)
inrow += 2; /* gray and alpha channel */
}
row += display->row_bytes;
(void)row; // FLTK: silence warning: FIXME - remove variable 'row'?
}
}
}
@ -3766,13 +3762,13 @@ png_image_read_direct(png_voidp argument)
mode = PNG_ALPHA_PNG;
output_gamma = PNG_DEFAULT_sRGB;
}
if ((change & PNG_FORMAT_FLAG_ASSOCIATED_ALPHA) != 0)
{
mode = PNG_ALPHA_OPTIMIZED;
change &= ~PNG_FORMAT_FLAG_ASSOCIATED_ALPHA;
}
/* If 'do_local_background' is set check for the presence of gamma
* correction; this is part of the work-round for the libpng bug
* described above.

2
png/pngrtran.c
View File

@ -21,7 +21,7 @@
#ifdef PNG_ARM_NEON_IMPLEMENTATION
# if PNG_ARM_NEON_IMPLEMENTATION == 1
# define PNG_ARM_NEON_INTRINSICS_AVAILABLE
# if defined(_MSC_VER) && defined(_M_ARM64)
# if defined(_MSC_VER) && !defined(__clang__) && defined(_M_ARM64)
# include <arm64_neon.h>
# else
# include <arm_neon.h>

38
png/pngrutil.c
View File

@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -301,7 +301,6 @@ png_read_buffer(png_structrp png_ptr, png_alloc_size_t new_size, int warn)
if (buffer != NULL && new_size > png_ptr->read_buffer_size)
{
png_ptr->read_buffer = NULL;
png_ptr->read_buffer = NULL;
png_ptr->read_buffer_size = 0;
png_free(png_ptr, buffer);
@ -2076,21 +2075,22 @@ png_handle_eXIf(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
png_byte buf[1];
png_crc_read(png_ptr, buf, 1);
info_ptr->eXIf_buf[i] = buf[0];
if (i == 1 && buf[0] != 'M' && buf[0] != 'I'
&& info_ptr->eXIf_buf[0] != buf[0])
if (i == 1)
{
png_crc_finish(png_ptr, length);
png_chunk_benign_error(png_ptr, "incorrect byte-order specifier");
png_free(png_ptr, info_ptr->eXIf_buf);
info_ptr->eXIf_buf = NULL;
return;
if ((buf[0] != 'M' && buf[0] != 'I') ||
(info_ptr->eXIf_buf[0] != buf[0]))
{
png_crc_finish(png_ptr, length - 2);
png_chunk_benign_error(png_ptr, "incorrect byte-order specifier");
png_free(png_ptr, info_ptr->eXIf_buf);
info_ptr->eXIf_buf = NULL;
return;
}
}
}
if (png_crc_finish(png_ptr, 0) != 0)
return;
png_set_eXIf_1(png_ptr, info_ptr, length, info_ptr->eXIf_buf);
if (png_crc_finish(png_ptr, 0) == 0)
png_set_eXIf_1(png_ptr, info_ptr, length, info_ptr->eXIf_buf);
png_free(png_ptr, info_ptr->eXIf_buf);
info_ptr->eXIf_buf = NULL;
@ -2126,8 +2126,9 @@ png_handle_hIST(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
num = length / 2 ;
if (num != (unsigned int) png_ptr->num_palette ||
num > (unsigned int) PNG_MAX_PALETTE_LENGTH)
if (length != num * 2 ||
num != (unsigned int)png_ptr->num_palette ||
num > (unsigned int)PNG_MAX_PALETTE_LENGTH)
{
png_crc_finish(png_ptr, length);
png_chunk_benign_error(png_ptr, "invalid");
@ -3185,7 +3186,7 @@ png_check_chunk_length(png_const_structrp png_ptr, png_uint_32 length)
{
png_debug2(0," length = %lu, limit = %lu",
(unsigned long)length,(unsigned long)limit);
png_chunk_error(png_ptr, "chunk data is too large");
png_benign_error(png_ptr, "chunk data is too large");
}
}
@ -4621,14 +4622,13 @@ defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
*/
{
png_bytep temp = png_ptr->big_row_buf + 32;
int extra = (int)((temp - (png_bytep)0) & 0x0f);
size_t extra = (size_t)temp & 0x0f;
png_ptr->row_buf = temp - extra - 1/*filter byte*/;
temp = png_ptr->big_prev_row + 32;
extra = (int)((temp - (png_bytep)0) & 0x0f);
extra = (size_t)temp & 0x0f;
png_ptr->prev_row = temp - extra - 1/*filter byte*/;
}
#else
/* Use 31 bytes of padding before and 17 bytes after row_buf. */
png_ptr->row_buf = png_ptr->big_row_buf + 31;

13
png/pngset.c
View File

@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 1998-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -1019,6 +1019,9 @@ png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
info_ptr->trans_alpha = png_voidcast(png_bytep,
png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH));
memcpy(info_ptr->trans_alpha, trans_alpha, (size_t)num_trans);
info_ptr->valid |= PNG_INFO_tRNS;
info_ptr->free_me |= PNG_FREE_TRNS;
}
png_ptr->trans_alpha = info_ptr->trans_alpha;
}
@ -1326,7 +1329,7 @@ png_set_unknown_chunk_location(png_const_structrp png_ptr, png_inforp info_ptr,
#ifdef PNG_MNG_FEATURES_SUPPORTED
png_uint_32 PNGAPI
png_permit_mng_features (png_structrp png_ptr, png_uint_32 mng_features)
png_permit_mng_features(png_structrp png_ptr, png_uint_32 mng_features)
{
png_debug(1, "in png_permit_mng_features");
@ -1633,7 +1636,7 @@ png_set_invalid(png_const_structrp png_ptr, png_inforp info_ptr, int mask)
#ifdef PNG_SET_USER_LIMITS_SUPPORTED
/* This function was added to libpng 1.2.6 */
void PNGAPI
png_set_user_limits (png_structrp png_ptr, png_uint_32 user_width_max,
png_set_user_limits(png_structrp png_ptr, png_uint_32 user_width_max,
png_uint_32 user_height_max)
{
/* Images with dimensions larger than these limits will be
@ -1649,7 +1652,7 @@ png_set_user_limits (png_structrp png_ptr, png_uint_32 user_width_max,
/* This function was added to libpng 1.4.0 */
void PNGAPI
png_set_chunk_cache_max (png_structrp png_ptr, png_uint_32 user_chunk_cache_max)
png_set_chunk_cache_max(png_structrp png_ptr, png_uint_32 user_chunk_cache_max)
{
if (png_ptr != NULL)
png_ptr->user_chunk_cache_max = user_chunk_cache_max;
@ -1657,7 +1660,7 @@ png_set_chunk_cache_max (png_structrp png_ptr, png_uint_32 user_chunk_cache_max)
/* This function was added to libpng 1.4.1 */
void PNGAPI
png_set_chunk_malloc_max (png_structrp png_ptr,
png_set_chunk_malloc_max(png_structrp png_ptr,
png_alloc_size_t user_chunk_malloc_max)
{
if (png_ptr != NULL)

20
png/pngwrite.c
View File

@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file
*
* Copyright (c) 2018-2019 Cosmin Truta
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -75,10 +75,10 @@ write_unknown_chunks(png_structrp png_ptr, png_const_inforp info_ptr,
* library. If you have a new chunk to add, make a function to write it,
* and put it in the correct location here. If you want the chunk written
* after the image data, put it in png_write_end(). I strongly encourage
* you to supply a PNG_INFO_ flag, and check info_ptr->valid before writing
* the chunk, as that will keep the code from breaking if you want to just
* write a plain PNG file. If you have long comments, I suggest writing
* them in png_write_end(), and compressing them.
* you to supply a PNG_INFO_<chunk> flag, and check info_ptr->valid before
* writing the chunk, as that will keep the code from breaking if you want
* to just write a plain PNG file. If you have long comments, I suggest
* writing them in png_write_end(), and compressing them.
*/
void PNGAPI
png_write_info_before_PLTE(png_structrp png_ptr, png_const_inforp info_ptr)
@ -489,6 +489,16 @@ png_convert_from_time_t(png_timep ptime, time_t ttime)
png_debug(1, "in png_convert_from_time_t");
tbuf = gmtime(&ttime);
if (tbuf == NULL)
{
/* TODO: add a safe function which takes a png_ptr argument and raises
* a png_error if the ttime argument is invalid and the call to gmtime
* fails as a consequence.
*/
memset(ptime, 0, sizeof(*ptime));
return;
}
png_convert_from_struct_tm(ptime, tbuf);
}
#endif

6
png/pngwutil.c
View File

@ -1,7 +1,7 @@
/* pngwutil.c - utilities to write a PNG file
*
* Copyright (c) 2018 Cosmin Truta
* Copyright (c) 2018-2022 Cosmin Truta
* Copyright (c) 1998-2002,2004,2006-2018 Glenn Randers-Pehrson
* Copyright (c) 1996-1997 Andreas Dilger
* Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
@ -1747,7 +1747,7 @@ png_write_pCAL(png_structrp png_ptr, png_charp purpose, png_int_32 X0,
{
png_uint_32 purpose_len;
size_t units_len, total_len;
png_size_tp params_len;
size_t *params_len;
png_byte buf[10];
png_byte new_purpose[80];
int i;
@ -1769,7 +1769,7 @@ png_write_pCAL(png_structrp png_ptr, png_charp purpose, png_int_32 X0,
png_debug1(3, "pCAL units length = %d", (int)units_len);
total_len = purpose_len + units_len + 10;
params_len = (png_size_tp)png_malloc(png_ptr,
params_len = (size_t *)png_malloc(png_ptr,
(png_alloc_size_t)((png_alloc_size_t)nparams * (sizeof (size_t))));
/* Find the length of each parameter, making sure we don't count the