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[master] Imported from libpng-1.6.32.tar

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This commit is contained in:
Glenn Randers-Pehrson 2017-08-24 14:44:52 -05:00
parent fbff8986e7
commit f8110669f0
75 changed files with 892 additions and 246 deletions
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104
ANNOUNCE
View File

@ -1,4 +1,4 @@
Libpng 1.6.31 - July 27, 2017
Libpng 1.6.32 - August 24, 2017
This is a public release of libpng, intended for use in production codes.
@ -7,51 +7,79 @@ Files available for download:
Source files with LF line endings (for Unix/Linux) and with a
"configure" script
libpng-1.6.31.tar.xz (LZMA-compressed, recommended)
libpng-1.6.31.tar.gz
libpng-1.6.32.tar.xz (LZMA-compressed, recommended)
libpng-1.6.32.tar.gz
Source files with CRLF line endings (for Windows), without the
"configure" script
lpng1631.7z (LZMA-compressed, recommended)
lpng1631.zip
lpng1632.7z (LZMA-compressed, recommended)
lpng1632.zip
Other information:
libpng-1.6.31-README.txt
libpng-1.6.31-LICENSE.txt
libpng-1.6.31-*.asc (armored detached GPG signatures)
libpng-1.6.32-README.txt
libpng-1.6.32-LICENSE.txt
libpng-1.6.32-*.asc (armored detached GPG signatures)
Changes since the last public release (1.6.30):
Guard the definition of _POSIX_SOURCE in pngpriv.h (AIX already defines it;
bug report by Michael Felt).
Revised pngpriv.h to work around failure to compile arm/filter_neon.S
("typedef" directive is unrecognized by the assembler). The problem
was introduced in libpng-1.6.30beta01.
Added "Requires: zlib" to libpng.pc.in (Pieter Neerincx).
Added special case for FreeBSD in arm/filter_neon.S (Maya Rashish).
Added instructions for disabling hardware optimizations in INSTALL.
Added "--enable-hardware-optimizations" configuration flag to enable
or disable all hardware optimizations with one flag.
Updated CMakeLists.txt to add INTEL_SSE and MIPS_MSA platforms.
Changed "int" to "png_size_t" in intel/filter_sse2.c to prevent
possible integer overflow (Bug report by John Bowler).
Quieted "declaration after statement" warnings in intel/filter_sse2.c.
Added scripts/makefile-linux-opt, which has hardware optimizations enabled.
Removed one of the GCC-7.1.0 'strict-overflow' warnings that result when
integers appear on both sides of a compare. Worked around the others by
forcing the strict-overflow setting in the relevant functions to a level
where they are not reported (John Bowler).
Changed "FALL THROUGH" comments to "FALLTHROUGH" because GCC doesn't like
the space.
Worked around some C-style casts from (void*) because g++ 5.4.0 objects
to them.
Increased the buffer size for 'sprint' to pass the gcc 7.1.0 'sprint
overflow' check that is on by default with -Wall -Wextra.
Added eXIf chunk support.
Added a minimal eXIf chunk (with Orientation and FocalLengthIn35mmFilm
tags) to pngtest.png.
Changes since the last public release (1.6.31):
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
(Bug report from the OSS-fuzz project).
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.
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).
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.
Moved chunk-length check into a png_check_chunk_length() private
function (Suggested by Max Stepin).
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 (Clifford Yapp).
Fix "const" declaration info_ptr argument to png_get_eXIf_1() and the
num_exif argument to png_get_eXIf_1() (Github Issue 171).
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
(github issue #172).
Added contrib/oss-fuzz directory which contains files used by the oss-fuzz
project (https://github.com/google/oss-fuzz/tree/master/projects/libpng).
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

86
CHANGES
View File

@ -5908,6 +5908,92 @@ Version 1.6.31rc02 [July 25, 2017]
Version 1.6.31 [July 27, 2017]
No changes.
Version 1.6.32beta01 [July 31, 2017]
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.
Version 1.6.32beta02 [August 1, 2017]
Updated contrib/libtests/pngunknown.c with eXIf chunk.
Version 1.6.32beta03 [August 2, 2017]
Initialized btoa[] in pngstest.c
Stop memory leak when returning from png_handle_eXIf() with an error
(Bug report from the OSS-fuzz project).
Version 1.6.32beta04 [August 2, 2017]
Replaced local eXIf_buf with info_ptr-eXIf_buf in png_handle_eXIf().
Update libpng.3 and libpng-manual.txt about eXIf functions.
Version 1.6.32beta05 [August 2, 2017]
Restored png_get_eXIf() and png_set_eXIf() to maintain API compatability.
Version 1.6.32beta06 [August 2, 2017]
Removed png_get_eXIf_1() and png_set_eXIf_1().
Version 1.6.32beta07 [August 3, 2017]
Check length of all chunks except IDAT against user limit to fix an
OSS-fuzz issue.
Version 1.6.32beta08 [August 3, 2017]
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).
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).
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 (Clifford Yapp).
Fix "const" declaration info_ptr argument to png_get_eXIf_1() and the
num_exif argument to png_get_eXIf_1() (Github Issue 171).
Version 1.6.32beta11 [August 7, 2017]
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".
Version 1.6.32rc01 [August 18, 2017]
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
(github issue #172).
Version 1.6.32rc02 [August 22, 2017]
Added contrib/oss-fuzz directory which contains files used by the oss-fuzz
project (https://github.com/google/oss-fuzz/tree/master/projects/libpng).
Version 1.6.32 [August 24, 2017]
No changes.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit
https://lists.sourceforge.net/lists/listinfo/png-mng-implement

101
CMakeLists.txt
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@ -11,8 +11,8 @@
# For conditions of distribution and use, see the disclaimer
# and license in png.h
cmake_minimum_required(VERSION 2.8.3)
cmake_policy(VERSION 2.8.3)
cmake_minimum_required(VERSION 3.0.2)
cmake_policy(VERSION 3.0.2)
# Set MacOSX @rpath usage globally.
if (POLICY CMP0020)
@ -36,7 +36,7 @@ enable_testing()
set(PNGLIB_MAJOR 1)
set(PNGLIB_MINOR 6)
set(PNGLIB_RELEASE 31)
set(PNGLIB_RELEASE 32)
set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
@ -755,31 +755,58 @@ if(PNG_SHARED)
list(APPEND PNG_BIN_TARGETS png-fix-itxt)
endif()
# Ensure the CMAKE_LIBRARY_OUTPUT_DIRECTORY is set
IF(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY)
SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY "lib")
ENDIF(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY)
# Set a variable with CMake code which:
# Creates a symlink from src to dest (if possible) or alternatively
# copies if different.
macro(CREATE_SYMLINK SRC_FILE DEST_FILE)
FILE(REMOVE ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE})
if(CMAKE_HOST_WIN32 AND NOT CYGWIN AND NOT MSYS)
ADD_CUSTOM_COMMAND(
OUTPUT ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE} ${CMAKE_CURRENT_BINARY_DIR}/${DEST_FILE}
COMMAND ${CMAKE_COMMAND} -E copy_if_different "${SRC_FILE}" ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE}
COMMAND ${CMAKE_COMMAND} -E copy_if_different "${SRC_FILE}" ${CMAKE_CURRENT_BINARY_DIR}/${DEST_FILE}
DEPENDS ${PNG_LIB_TARGETS}
)
ADD_CUSTOM_TARGET(${DEST_FILE}_COPY ALL DEPENDS ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE})
else(CMAKE_HOST_WIN32 AND NOT CYGWIN AND NOT MSYS)
get_filename_component(LINK_TARGET "${SRC_FILE}" NAME)
execute_process(COMMAND ${CMAKE_COMMAND} -E make_directory ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_LIBRARY_OUTPUT_DIRECTORY})
execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink "${LINK_TARGET}" ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink "${LINK_TARGET}" ${DEST_FILE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
endif(CMAKE_HOST_WIN32 AND NOT CYGWIN AND NOT MSYS)
endmacro()
include(CMakeParseArguments)
function(CREATE_SYMLINK DEST_FILE)
cmake_parse_arguments(S "" "FILE;TARGET" "" ${ARGN})
if(NOT S_TARGET AND NOT S_FILE)
message(FATAL_ERROR "Specify either a TARGET or a FILE for CREATE_SYMLINK to link to.")
endif(NOT S_TARGET AND NOT S_FILE)
if(S_TARGET AND S_FILE)
message(FATAL_ERROR "CREATE_SYMLINK called with both source file ${S_FILE} and build target ${S_TARGET} arguments - can only handle 1 type per call.")
endif(S_TARGET AND S_FILE)
if(S_FILE)
# If we don't need to symlink something that's coming from a build target,
# we can go ahead and symlink/copy at configure time.
if(CMAKE_HOST_WIN32 AND NOT CYGWIN AND NOT MSYS)
execute_process(
COMMAND "${CMAKE_COMMAND}" -E copy_if_different ${S_FILE} ${DEST_FILE}
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}"
)
else(CMAKE_HOST_WIN32 AND NOT CYGWIN AND NOT MSYS)
execute_process(
COMMAND ${CMAKE_COMMAND} -E create_symlink ${S_FILE} ${DEST_FILE}
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}"
)
endif(CMAKE_HOST_WIN32 AND NOT CYGWIN AND NOT MSYS)
endif(S_FILE)
if(S_TARGET)
# We need to use generator expressions, which can be a bit tricky, so for
# simplicity make the symlink a POST_BUILD step and use the TARGET
# signature of add_custom_command.
if(CMAKE_HOST_WIN32 AND NOT CYGWIN AND NOT MSYS)
add_custom_command(TARGET ${S_TARGET} POST_BUILD
COMMAND "${CMAKE_COMMAND}" -E copy_if_different $<TARGET_LINKER_FILE_NAME:${S_TARGET}> $<TARGET_LINKER_FILE_DIR:${S_TARGET}>/${DEST_FILE}
)
else(CMAKE_HOST_WIN32 AND NOT CYGWIN AND NOT MSYS)
add_custom_command(TARGET ${S_TARGET} POST_BUILD
COMMAND "${CMAKE_COMMAND}" -E create_symlink $<TARGET_LINKER_FILE_NAME:${S_TARGET}> $<TARGET_LINKER_FILE_DIR:${S_TARGET}>/${DEST_FILE}
)
endif(CMAKE_HOST_WIN32 AND NOT CYGWIN AND NOT MSYS)
endif(S_TARGET)
endfunction()
# Create source generation scripts.
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/genchk.cmake.in
@ -807,17 +834,17 @@ if(NOT WIN32 OR CYGWIN OR MINGW)
set(LIBS "-lz -lm")
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in
${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc @ONLY)
CREATE_SYMLINK(${PNGLIB_NAME}.pc libpng.pc)
CREATE_SYMLINK(libpng.pc FILE ${PNGLIB_NAME}.pc)
configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in
${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config @ONLY)
CREATE_SYMLINK(${PNGLIB_NAME}-config libpng-config)
CREATE_SYMLINK(libpng-config FILE ${PNGLIB_NAME}-config)
endif(NOT WIN32 OR CYGWIN OR MINGW)
# SET UP LINKS
if(PNG_SHARED)
set_target_properties(png PROPERTIES
# VERSION 16.${PNGLIB_RELEASE}.1.6.31
# VERSION 16.${PNGLIB_RELEASE}.1.6.32
VERSION 16.${PNGLIB_RELEASE}.0
SOVERSION 16
CLEAN_DIRECT_OUTPUT 1)
@ -844,26 +871,20 @@ if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
if(PNG_SHARED)
# Create a symlink for libpng.dll.a => libpng16.dll.a on Cygwin
if(CYGWIN OR MINGW)
get_target_property(BUILD_TARGET_LOCATION png LOCATION_${CMAKE_BUILD_TYPE})
CREATE_SYMLINK(${BUILD_TARGET_LOCATION} libpng${CMAKE_IMPORT_LIBRARY_SUFFIX})
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_IMPORT_LIBRARY_SUFFIX}
DESTINATION ${CMAKE_INSTALL_LIBDIR})
CREATE_SYMLINK(libpng${CMAKE_IMPORT_LIBRARY_SUFFIX} TARGET png)
install(FILES $<TARGET_LINKER_FILE_DIR:png>/libpng${CMAKE_IMPORT_LIBRARY_SUFFIX} DESTINATION ${CMAKE_INSTALL_LIBDIR})
endif(CYGWIN OR MINGW)
if(NOT WIN32)
get_target_property(BUILD_TARGET_LOCATION png LOCATION_${CMAKE_BUILD_TYPE})
CREATE_SYMLINK(${BUILD_TARGET_LOCATION} libpng${CMAKE_SHARED_LIBRARY_SUFFIX})
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_SHARED_LIBRARY_SUFFIX}
DESTINATION ${CMAKE_INSTALL_LIBDIR})
CREATE_SYMLINK(libpng${CMAKE_SHARED_LIBRARY_SUFFIX} TARGET png)
install(FILES $<TARGET_LINKER_FILE_DIR:png>/libpng${CMAKE_SHARED_LIBRARY_SUFFIX} DESTINATION ${CMAKE_INSTALL_LIBDIR})
endif(NOT WIN32)
endif(PNG_SHARED)
if(PNG_STATIC)
if(NOT WIN32 OR CYGWIN OR MINGW)
get_target_property(BUILD_TARGET_LOCATION png_static LOCATION_${CMAKE_BUILD_TYPE})
CREATE_SYMLINK(${BUILD_TARGET_LOCATION} libpng${CMAKE_STATIC_LIBRARY_SUFFIX})
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_STATIC_LIBRARY_SUFFIX}
DESTINATION ${CMAKE_INSTALL_LIBDIR})
CREATE_SYMLINK( libpng${CMAKE_STATIC_LIBRARY_SUFFIX} TARGET png_static)
install(FILES $<TARGET_LINKER_FILE_DIR:png_static>/libpng${CMAKE_STATIC_LIBRARY_SUFFIX} DESTINATION ${CMAKE_INSTALL_LIBDIR})
endif(NOT WIN32 OR CYGWIN OR MINGW)
endif()
endif()

2
LICENSE
View File

@ -10,7 +10,7 @@ this sentence.
This code is released under the libpng license.
libpng versions 1.0.7, July 1, 2000 through 1.6.31, July 27, 2017 are
libpng versions 1.0.7, July 1, 2000 through 1.6.32, August 24, 2017 are
Copyright (c) 2000-2002, 2004, 2006-2017 Glenn Randers-Pehrson, are
derived from libpng-1.0.6, and are distributed according to the same
disclaimer and license as libpng-1.0.6 with the following individuals

1
Makefile.am
View File

@ -60,6 +60,7 @@ pngcp_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
# set of parameters:
TESTS =\
tests/pngtest\
tests/pngtest-badpngs\
tests/pngvalid-gamma-16-to-8 tests/pngvalid-gamma-alpha-mode\
tests/pngvalid-gamma-background tests/pngvalid-gamma-expand16-alpha-mode\
tests/pngvalid-gamma-expand16-background\

2
README
View File

@ -1,4 +1,4 @@
README for libpng version 1.6.31 - July 27, 2017 (shared library 16.0)
README for libpng version 1.6.32 - August 24, 2017 (shared library 16.0)
See the note about version numbers near the top of png.h
See INSTALL for instructions on how to install libpng.

6
configure.ac
View File

@ -25,7 +25,7 @@ AC_PREREQ([2.68])
dnl Version number stuff here:
AC_INIT([libpng],[1.6.31],[png-mng-implement@lists.sourceforge.net])
AC_INIT([libpng],[1.6.32],[png-mng-implement@lists.sourceforge.net])
AC_CONFIG_MACRO_DIR([scripts])
# libpng does not follow GNU file name conventions (hence 'foreign')
@ -46,10 +46,10 @@ dnl automake, so the following is not necessary (and is not defined anyway):
dnl AM_PREREQ([1.11.2])
dnl stop configure from automagically running automake
PNGLIB_VERSION=1.6.31
PNGLIB_VERSION=1.6.32
PNGLIB_MAJOR=1
PNGLIB_MINOR=6
PNGLIB_RELEASE=31
PNGLIB_RELEASE=32
dnl End of version number stuff

2
contrib/libtests/pngstest.c
View File

@ -2610,9 +2610,9 @@ compare_two_images(Image *a, Image *b, int via_linear,
const unsigned int b_sample = PNG_IMAGE_SAMPLE_SIZE(formatb);
int alpha_added, alpha_removed;
int bchannels;
int btoa[4];
png_uint_32 y;
Transform tr;
int btoa[4]={0,0,0,0};
/* This should never happen: */
if (width != b->image.width || height != b->image.height)

12
contrib/libtests/pngunknown.c
View File

@ -1,7 +1,7 @@
/* pngunknown.c - test the read side unknown chunk handling
*
* Last changed in libpng 1.6.31 [July 27, 2017]
* Last changed in libpng 1.6.32 [August 24, 2017]
* Copyright (c) 2015,2017 Glenn Randers-Pehrson
* Written by John Cunningham Bowler
*
@ -114,6 +114,7 @@ typedef png_byte *png_const_bytep;
#define png_PLTE PNG_U32( 80, 76, 84, 69)
#define png_bKGD PNG_U32( 98, 75, 71, 68)
#define png_cHRM PNG_U32( 99, 72, 82, 77)
#define png_eXIf PNG_U32(101, 88, 73, 102) /* registered July 2017 */
#define png_fRAc PNG_U32(102, 82, 65, 99) /* registered, not defined */
#define png_gAMA PNG_U32(103, 65, 77, 65)
#define png_gIFg PNG_U32(103, 73, 70, 103)
@ -210,6 +211,13 @@ static struct
1,
# endif
1, START, 0 },
{ "eXIf", PNG_INFO_eXIf, png_eXIf,
# ifdef PNG_READ_eXIf_SUPPORTED
0,
# else
1,
# endif
1, END, 0 },
{ "gAMA", PNG_INFO_gAMA, png_gAMA,
# ifdef PNG_READ_gAMA_SUPPORTED
0,
@ -1090,7 +1098,7 @@ static const char *standard_tests[] =
"sTER", "sTER=if-safe", 0,
"IDAT", "default=discard", "IDAT=save", 0,
"sAPI", "bKGD=save", "cHRM=save", "gAMA=save", "all=discard", "iCCP=save",
"sBIT=save", "sRGB=save", 0,
"sBIT=save", "sRGB=save", "eXIf=save", 0,
0/*end*/
};

32
contrib/oss-fuzz/README.txt Normal file
View File

@ -0,0 +1,32 @@
Last changed in libpng 1.6.32 [August 24, 2017]
Copyright (c) 2017 Glenn Randers-Pehrson
This code is released under the libpng license.
For conditions of distribution and use, see the disclaimer
and license in png.h
Files in this directory are used by the oss-fuzz project
(https://github.com/google/oss-fuzz/tree/master/projects/libpng).
for "fuzzing" libpng.
They were licensed by Google Inc, using the BSD-like Chromium license,
which may be found at https://cs.chromium.org/chromium/src/LICENSE, or, if
noted in the source, under the Apache-2.0 license, which may
be found at http://www.apache.org/licenses/LICENSE-2.0 .
If they have been modified, the derivatives are copyright Glenn Randers-Pehson
and are released under the same licenses as the originals. Several of
the original files (libpng_read_fuzzer.options, png.dict, project.yaml)
had no licensing information; we assumed that these were under the Chromium
license. Any new files are released under the libpng license (see png.h).
The files are
Original
Filename or derived Copyright License
========================= ========== ================ ==========
build.sh derived 2017, Glenn R-P Apache 2.0
libpng_read_fuzzer.cc derived 2017, Glenn R-P Chromium
libpng_read_fuzzer.options original 2015, Chrome Devs Chromium
png.dict original 2015, Chrome Devs Chromium
README.txt (this file) original 2017, GLenn R-P libpng
To do: exercise the progressive reader.

47
contrib/oss-fuzz/build.sh Executable file
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@ -0,0 +1,47 @@
#!/bin/bash -eu
# Copyright 2017 Glenn Randers-Pehrson
# Copyright 2016 Google Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Last changed in libpng 1.6.32 [August 24, 2017]
#
# Revisions by Glenn Randers-Pehson, 2017:
# 1. Build only the library, not the tools (changed "make -j$(nproc) all" to
# "make -j$(nproc) libpng16.la").
# 2. Disabled WARNING and WRITE options in pnglibconf.dfa.
################################################################################
# Disable logging via library build configuration control.
cat scripts/pnglibconf.dfa | \
sed -e "s/option STDIO/option STDIO disabled/" \
-e "s/option WARNING /option WARNING disabled/" \
-e "s/option WRITE enables WRITE_INT_FUNCTIONS/option WRITE disabled/" \
> scripts/pnglibconf.dfa.temp
mv scripts/pnglibconf.dfa.temp scripts/pnglibconf.dfa
# build the library.
autoreconf -f -i
./configure
make -j$(nproc) clean
make -j$(nproc) libpng16.la
# build libpng_read_fuzzer.
$CXX $CXXFLAGS -std=c++11 -I. \
$SRC/libpng_read_fuzzer.cc -o $OUT/libpng_read_fuzzer \
-lFuzzingEngine .libs/libpng16.a -lz
# add seed corpus.
find $SRC/libpng/contrib/pngsuite -name "*.png" | xargs zip $OUT/libpng_read_fuzzer_seed_corpus.zip
cp $SRC/*.dict $SRC/*.options $OUT/

154
contrib/oss-fuzz/libpng_read_fuzzer.cc Normal file
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// libpng_read_fuzzer.cc
// Copyright 2017 Glenn Randers-Pehrson
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that may
// be found in the LICENSE file https://cs.chromium.org/chromium/src/LICENSE
// Last changed in libpng 1.6.32 [August 24, 2017]
// The modifications in 2017 by Glenn Randers-Pehrson include
// 1. addition of a PNG_CLEANUP macro,
// 2. setting the option to ignore ADLER32 checksums,
// 3. adding "#include <string.h>" which is needed on some platforms
// to provide memcpy().
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include <vector>
#define PNG_INTERNAL
#include "png.h"
#define PNG_CLEANUP \
if(png_handler.png_ptr) \
{ \
if (png_handler.info_ptr) \
png_destroy_read_struct(&png_handler.png_ptr, &png_handler.info_ptr,\
nullptr); \
else \
png_destroy_read_struct(&png_handler.png_ptr, nullptr, nullptr); \
}
struct BufState {
const uint8_t* data;
size_t bytes_left;
};
struct PngObjectHandler {
png_infop info_ptr = nullptr;
png_structp png_ptr = nullptr;
png_voidp row_ptr = nullptr;
BufState* buf_state = nullptr;
~PngObjectHandler() {
if (row_ptr && png_ptr) {
png_free(png_ptr, row_ptr);
}
if (png_ptr && info_ptr) {
png_destroy_read_struct(&png_ptr, &info_ptr, nullptr);
}
delete buf_state;
}
};
void user_read_data(png_structp png_ptr, png_bytep data, png_size_t length) {
BufState* buf_state = static_cast<BufState*>(png_get_io_ptr(png_ptr));
if (length > buf_state->bytes_left) {
png_error(png_ptr, "read error");
}
memcpy(data, buf_state->data, length);
buf_state->bytes_left -= length;
buf_state->data += length;
}
static const int kPngHeaderSize = 8;
// Entry point for LibFuzzer.
// Roughly follows the libpng book example:
// http://www.libpng.org/pub/png/book/chapter13.html
extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
if (size < kPngHeaderSize) {
return 0;
}
std::vector<unsigned char> v(data, data + size);
if (png_sig_cmp(v.data(), 0, kPngHeaderSize)) {
// not a PNG.
return 0;
}
PngObjectHandler png_handler;
png_handler.png_ptr = png_create_read_struct
(PNG_LIBPNG_VER_STRING, nullptr, nullptr, nullptr);
if (!png_handler.png_ptr) {
return 0;
}
png_handler.info_ptr = png_create_info_struct(png_handler.png_ptr);
if (!png_handler.info_ptr) {
PNG_CLEANUP
return 0;
}
png_set_crc_action(png_handler.png_ptr, PNG_CRC_QUIET_USE, PNG_CRC_QUIET_USE);
#ifdef PNG_IGNORE_ADLER32
png_set_option(png_handler.png_ptr, PNG_IGNORE_ADLER32, PNG_OPTION_ON);
#endif
// Setting up reading from buffer.
png_handler.buf_state = new BufState();
png_handler.buf_state->data = data + kPngHeaderSize;
png_handler.buf_state->bytes_left = size - kPngHeaderSize;
png_set_read_fn(png_handler.png_ptr, png_handler.buf_state, user_read_data);
png_set_sig_bytes(png_handler.png_ptr, kPngHeaderSize);
if (setjmp(png_jmpbuf(png_handler.png_ptr))) {
PNG_CLEANUP
return 0;
}
// Reading.
png_read_info(png_handler.png_ptr, png_handler.info_ptr);
png_handler.row_ptr = png_malloc(
png_handler.png_ptr, png_get_rowbytes(png_handler.png_ptr,
png_handler.info_ptr));
// reset error handler to put png_deleter into scope.
if (setjmp(png_jmpbuf(png_handler.png_ptr))) {
PNG_CLEANUP
return 0;
}
png_uint_32 width, height;
int bit_depth, color_type, interlace_type, compression_type;
int filter_type;
if (!png_get_IHDR(png_handler.png_ptr, png_handler.info_ptr, &width,
&height, &bit_depth, &color_type, &interlace_type,
&compression_type, &filter_type)) {
PNG_CLEANUP
return 0;
}
// This is going to be too slow.
if (width && height > 100000000 / width) {
PNG_CLEANUP
return 0;
}
int passes = png_set_interlace_handling(png_handler.png_ptr);
png_start_read_image(png_handler.png_ptr);
for (int pass = 0; pass < passes; ++pass) {
for (png_uint_32 y = 0; y < height; ++y) {
png_read_row(png_handler.png_ptr,
static_cast<png_bytep>(png_handler.row_ptr), nullptr);
}
}
PNG_CLEANUP
return 0;
}

2
contrib/oss-fuzz/libpng_read_fuzzer.options Normal file
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[libfuzzer]
dict = png.dict

39
contrib/oss-fuzz/png.dict Normal file
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#
# AFL dictionary for PNG images
# -----------------------------
#
# Just the basic, standard-originating sections; does not include vendor
# extensions.
#
# Created by Michal Zalewski <lcamtuf@google.com>
#
header_png="\x89PNG\x0d\x0a\x1a\x0a"
section_IDAT="IDAT"
section_IEND="IEND"
section_IHDR="IHDR"
section_PLTE="PLTE"
section_bKGD="bKGD"
section_cHRM="cHRM"
section_eXIf="eXIf"
section_fRAc="fRAc"
section_gAMA="gAMA"
section_gIFg="gIFg"
section_gIFt="gIFt"
section_gIFx="gIFx"
section_hIST="hIST"
section_iCCP="iCCP"
section_iTXt="iTXt"
section_oFFs="oFFs"
section_pCAL="pCAL"
section_pHYs="pHYs"
section_sBIT="sBIT"
section_sCAL="sCAL"
section_sPLT="sPLT"
section_sRGB="sRGB"
section_sTER="sTER"
section_tEXt="tEXt"
section_tIME="tIME"
section_tRNS="tRNS"
section_zTXt="zTXt"

17
contrib/pngminus/png2pnm.c
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@ -1,9 +1,11 @@
/*
* png2pnm.c --- conversion from PNG-file to PGM/PPM-file
* copyright (C) 1999 by Willem van Schaik <willem at schaik.com>
* copyright (C) 1999,2017 by Willem van Schaik <willem at schaik.com>
*
* version 1.0 - 1999.10.15 - First version.
* 1.1 - 2017.04.22 - Add buffer-size check (Glenn Randers-Pehrson)
* 1.2 - 2017.08.24 - Fix potential overflow in buffer-size check
(Glenn Randers-Pehrson)
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
@ -321,18 +323,21 @@ BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file,
/* row_bytes is the width x number of channels x (bit-depth / 8) */
row_bytes = png_get_rowbytes (png_ptr, info_ptr);
if (height > ((size_t)(-1))/row_bytes) /* too big */ {
if ((row_bytes == 0 || (size_t)height > ((size_t)(-1))/(size_t)row_bytes))
{
/* too big */
png_destroy_read_struct (&png_ptr, &info_ptr, NULL);
return FALSE;
}
if ((png_pixels = (png_byte *)
malloc (row_bytes * height * sizeof (png_byte))) == NULL) {
malloc ((size_t)row_bytes * (size_t)height * sizeof (png_byte))) == NULL)
{
png_destroy_read_struct (&png_ptr, &info_ptr, NULL);
return FALSE;
}
if ((row_pointers = (png_byte **)
malloc (height * sizeof (png_bytep))) == NULL)
malloc ((size_t)height * sizeof (png_bytep))) == NULL)
{
png_destroy_read_struct (&png_ptr, &info_ptr, NULL);
free (png_pixels);
@ -413,7 +418,8 @@ BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file,
if (raw)
fputc ((int) *pix_ptr++ , alpha_file);
else
if (bit_depth == 16){
if (bit_depth == 16)
{
dep_16 = (long) *pix_ptr++;
fprintf (alpha_file, "%ld ", (dep_16 << 8) + (long) *pix_ptr++);
}
@ -437,6 +443,7 @@ BOOL png2pnm (FILE *png_file, FILE *pnm_file, FILE *alpha_file,
if (png_pixels != (unsigned char*) NULL)
free (png_pixels);
PNG_UNUSED(raw) /* to quiet a Coverity defect */
return TRUE;
} /* end of source */

18
contrib/pngminus/pnm2png.c
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@ -1,10 +1,12 @@
/*
* pnm2png.c --- conversion from PBM/PGM/PPM-file to PNG-file
* copyright (C) 1999 by Willem van Schaik <willem at schaik.com>
* copyright (C) 1999,2015,2017 by Willem van Schaik <willem at schaik.com>
*
* version 1.0 - 1999.10.15 - First version.
* version 1.1 - 2015.07.29 - Fixed leaks (Glenn Randers-Pehrson)
* version 1.2 - 2017.04.22 - Add buffer-size check
* 1.3 - 2017.08.24 - Fix potential overflow in buffer-size check
* (Glenn Randers-Pehrson)
*
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
@ -371,10 +373,12 @@ BOOL pnm2png (FILE *pnm_file, FILE *png_file, FILE *alpha_file, BOOL interlace,
row_bytes = (width * channels * bit_depth + 7) / 8;
else
#endif
/* row_bytes is the width x number of channels x (bit-depth / 8) */
/* row_bytes is the width x number of channels x (bit-depth / 8) */
row_bytes = width * channels * ((bit_depth <= 8) ? 1 : 2);
if (height > ((size_t)(-1))/row_bytes) /* too big */ {
if ((row_bytes == 0 || (size_t)height > ((size_t)(-1))/(size_t)row_bytes)
{
/* too big */
return FALSE;
}
if ((png_pixels = (png_byte *)
@ -387,7 +391,8 @@ BOOL pnm2png (FILE *pnm_file, FILE *png_file, FILE *alpha_file, BOOL interlace,
for (row = 0; row < (int) height; row++)
{
#if defined(PNG_WRITE_INVERT_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
if (packed_bitmap) {
if (packed_bitmap)
{
for (i = 0; i < (int) row_bytes; i++)
/* png supports this format natively so no conversion is needed */
*pix_ptr++ = get_data (pnm_file, 8);
@ -508,6 +513,8 @@ BOOL pnm2png (FILE *pnm_file, FILE *png_file, FILE *alpha_file, BOOL interlace,
if (png_pixels != (unsigned char*) NULL)
free (png_pixels);
PNG_UNUSED(raw) /* Quiet a Coverity defect */
return TRUE;
} /* end of pnm2png */
@ -524,7 +531,8 @@ void get_token(FILE *pnm_file, char *token)
do
{
ret = fgetc(pnm_file);
if (ret == '#') {
if (ret == '#')
{
/* the rest of this line is a comment */
do
{

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17
libpng-manual.txt
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@ -1,6 +1,6 @@
libpng-manual.txt - A description on how to use and modify libpng
libpng version 1.6.31 - July 27, 2017
libpng version 1.6.32 - August 24, 2017
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2017 Glenn Randers-Pehrson
@ -11,7 +11,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on:
libpng versions 0.97, January 1998, through 1.6.31 - July 27, 2017
libpng versions 0.97, January 1998, through 1.6.32 - August 24, 2017
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2017 Glenn Randers-Pehrson
@ -688,8 +688,9 @@ where 0x7fffffffL means unlimited. You can retrieve this limit with
chunk_cache_max = png_get_chunk_cache_max(png_ptr);
Libpng imposes a limit of 8 Megabytes (8,000,000 bytes) on the amount of
memory that a compressed chunk other than IDAT can occupy, when decompressed.
You can change this limit with
memory that any chunk other than IDAT can occupy, originally or when
decompressed (prior to libpng-1.6.32 the limit was only applied to compressed
chunks after decompression). You can change this limit with
png_set_chunk_malloc_max(png_ptr, user_chunk_malloc_max);
@ -1453,7 +1454,7 @@ png_set_rgb_to_gray()).
the single transparent color for
non-paletted images (PNG_INFO_tRNS)
png_get_eXIf(png_ptr, info_ptr, &exif);
png_get_eXIf_1(png_ptr, info_ptr, &num_exif, &exif);
(PNG_INFO_eXIf)
exif - Exif profile (array of png_byte)
@ -3103,9 +3104,9 @@ width, height, bit_depth, and color_type must be the same in each call.
single transparent color for
non-paletted images (PNG_INFO_tRNS)
png_set_eXIf(png_ptr, info_ptr, exif);
png_set_eXIf_1(png_ptr, info_ptr, num_exif, exif);
hist - Exif profile (array of
exif - Exif profile (array of
png_byte) (PNG_INFO_eXIf)
png_set_hIST(png_ptr, info_ptr, hist);
@ -5404,7 +5405,7 @@ Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
This is your unofficial assurance that libpng from version 0.71 and
upward through 1.6.31 are Y2K compliant. It is my belief that earlier
upward through 1.6.32 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant.
Libpng only has two year fields. One is a 2-byte unsigned integer

33
libpng.3
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@ -1,6 +1,6 @@
.TH LIBPNG 3 "July 27, 2017"
.TH LIBPNG 3 "August 24, 2017"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.31
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.32
.SH SYNOPSIS
\fB
#include <png.h>\fP
@ -99,6 +99,8 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.6.31
\fBpng_uint_32 png_get_eXIf (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fI*exif\fP\fB);\fP
\fBpng_uint_32 png_get_eXIf_1 (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_unit_32 \fP\fI*num_exif\fP\fB, png_bytep \fI*exif\fP\fB);\fP
\fBpng_uint_32 png_get_hIST (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_uint_16p \fI*hist\fP\fB);\fP
\fBpng_uint_32 png_get_iCCP (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_charpp \fP\fIname\fP\fB, int \fP\fI*compression_type\fP\fB, png_bytepp \fP\fIprofile\fP\fB, png_uint_32 \fI*proflen\fP\fB);\fP
@ -351,6 +353,8 @@ libpng \- Portable Network Graphics (PNG) Reference Library 1.6.31
\fBvoid png_set_eXIf (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fIexif\fP\fB);\fP
\fBvoid png_set_eXIf_1 (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, const png_uint_32 \fP\fInum_exif\fP\fB, png_bytep \fIexif\fP\fB);\fP
\fBvoid png_set_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_16p \fIhist\fP\fB);\fP
\fBvoid png_set_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_const_charp \fP\fIname\fP\fB, int \fP\fIcompression_type\fP\fB, png_const_bytep \fP\fIprofile\fP\fB, png_uint_32 \fIproflen\fP\fB);\fP
@ -514,7 +518,7 @@ Following is a copy of the libpng-manual.txt file that accompanies libpng.
.SH LIBPNG.TXT
libpng-manual.txt - A description on how to use and modify libpng
libpng version 1.6.31 - July 27, 2017
libpng version 1.6.32 - August 24, 2017
Updated and distributed by Glenn Randers-Pehrson
<glennrp at users.sourceforge.net>
Copyright (c) 1998-2017 Glenn Randers-Pehrson
@ -525,7 +529,7 @@ libpng-manual.txt - A description on how to use and modify libpng
Based on:
libpng versions 0.97, January 1998, through 1.6.31 - July 27, 2017
libpng versions 0.97, January 1998, through 1.6.32 - August 24, 2017
Updated and distributed by Glenn Randers-Pehrson
Copyright (c) 1998-2017 Glenn Randers-Pehrson
@ -1202,8 +1206,9 @@ where 0x7fffffffL means unlimited. You can retrieve this limit with
chunk_cache_max = png_get_chunk_cache_max(png_ptr);
Libpng imposes a limit of 8 Megabytes (8,000,000 bytes) on the amount of
memory that a compressed chunk other than IDAT can occupy, when decompressed.
You can change this limit with
memory that any chunk other than IDAT can occupy, originally or when
decompressed (prior to libpng-1.6.32 the limit was only applied to compressed
chunks after decompression). You can change this limit with
png_set_chunk_malloc_max(png_ptr, user_chunk_malloc_max);
@ -1967,7 +1972,7 @@ png_set_rgb_to_gray()).
the single transparent color for
non-paletted images (PNG_INFO_tRNS)
png_get_eXIf(png_ptr, info_ptr, &exif);
png_get_eXIf_1(png_ptr, info_ptr, &num_exif, &exif);
(PNG_INFO_eXIf)
exif - Exif profile (array of png_byte)
@ -3617,9 +3622,9 @@ width, height, bit_depth, and color_type must be the same in each call.
single transparent color for
non-paletted images (PNG_INFO_tRNS)
png_set_eXIf(png_ptr, info_ptr, exif);
png_set_eXIf_1(png_ptr, info_ptr, num_exif, exif);
hist - Exif profile (array of
exif - Exif profile (array of
png_byte) (PNG_INFO_eXIf)
png_set_hIST(png_ptr, info_ptr, hist);
@ -5918,7 +5923,7 @@ Since the PNG Development group is an ad-hoc body, we can't make
an official declaration.
This is your unofficial assurance that libpng from version 0.71 and
upward through 1.6.31 are Y2K compliant. It is my belief that earlier
upward through 1.6.32 are Y2K compliant. It is my belief that earlier
versions were also Y2K compliant.
Libpng only has two year fields. One is a 2-byte unsigned integer
@ -6020,7 +6025,7 @@ the first widely used release:
...
1.5.28 15 10528 15.so.15.28[.0]
...
1.6.31 16 10631 16.so.16.31[.0]
1.6.32 16 10632 16.so.16.32[.0]
Henceforth the source version will match the shared-library minor
and patch numbers; the shared-library major version number will be
@ -6076,7 +6081,7 @@ possible without all of you.
Thanks to Frank J. T. Wojcik for helping with the documentation.
Libpng version 1.6.31 - July 27, 2017:
Libpng version 1.6.32 - August 24, 2017:
Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
@ -6101,7 +6106,7 @@ this sentence.
This code is released under the libpng license.
libpng versions 1.0.7, July 1, 2000 through 1.6.31, July 27, 2017 are
libpng versions 1.0.7, July 1, 2000 through 1.6.32, August 24, 2017 are
Copyright (c) 2000-2002, 2004, 2006-2017 Glenn Randers-Pehrson, are
derived from libpng-1.0.6, and are distributed according to the same
disclaimer and license as libpng-1.0.6 with the following individuals
@ -6229,7 +6234,7 @@ files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
Glenn Randers-Pehrson
glennrp at users.sourceforge.net
July 27, 2017
August 24, 2017
.\" end of man page

2
libpngpf.3
View File

@ -1,6 +1,6 @@
.TH LIBPNGPF 3 "April 1, 2017"
.SH NAME
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.31
libpng \- Portable Network Graphics (PNG) Reference Library 1.6.32
(private functions)
.SH SYNOPSIS
\fB\fB#include \fI\fI"pngpriv.h"

22
png.c
View File

@ -1,7 +1,7 @@
/* png.c - location for general purpose libpng functions
*
* Last changed in libpng 1.6.31 [July 27, 2017]
* Last changed in libpng 1.6.32 [August 24, 2017]
* Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 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_31 Your_png_h_is_not_version_1_6_31;
typedef png_libpng_version_1_6_32 Your_png_h_is_not_version_1_6_32;
#ifdef __GNUC__
/* The version tests may need to be added to, but the problem warning has
@ -619,8 +619,18 @@ png_free_data(png_const_structrp png_ptr, png_inforp info_ptr, png_uint_32 mask,
/* Free any eXIf entry */
if (((mask & PNG_FREE_EXIF) & info_ptr->free_me) != 0)
{
png_free(png_ptr, info_ptr->exif);
info_ptr->exif = NULL;
# ifdef PNG_READ_eXIf_SUPPORTED
if (info_ptr->eXIf_buf)
{
png_free(png_ptr, info_ptr->eXIf_buf);
info_ptr->eXIf_buf = NULL;
}
# endif
if (info_ptr->exif)
{
png_free(png_ptr, info_ptr->exif);
info_ptr->exif = NULL;
}
info_ptr->valid &= ~PNG_INFO_eXIf;
}
#endif
@ -806,14 +816,14 @@ png_get_copyright(png_const_structrp png_ptr)
#else
# ifdef __STDC__
return PNG_STRING_NEWLINE \
"libpng version 1.6.31 - July 27, 2017" PNG_STRING_NEWLINE \
"libpng version 1.6.32 - August 24, 2017" PNG_STRING_NEWLINE \
"Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson" \
PNG_STRING_NEWLINE \
"Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
"Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
PNG_STRING_NEWLINE;
# else
return "libpng version 1.6.31 - July 27, 2017\
return "libpng version 1.6.32 - August 24, 2017\
Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson\
Copyright (c) 1996-1997 Andreas Dilger\
Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";

29
png.h
View File

@ -1,7 +1,7 @@
/* png.h - header file for PNG reference library
*
* libpng version 1.6.31, July 27, 2017
* libpng version 1.6.32, August 24, 2017
*
* Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
@ -12,7 +12,7 @@
* Authors and maintainers:
* libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
* libpng versions 0.89, June 1996, through 0.96, May 1997: Andreas Dilger
* libpng versions 0.97, January 1998, through 1.6.31, July 27, 2017:
* libpng versions 0.97, January 1998, through 1.6.32, August 24, 2017:
* Glenn Randers-Pehrson.
* See also "Contributing Authors", below.
*/
@ -25,7 +25,7 @@
*
* This code is released under the libpng license.
*
* libpng versions 1.0.7, July 1, 2000 through 1.6.31, July 27, 2017 are
* libpng versions 1.0.7, July 1, 2000 through 1.6.32, August 24, 2017 are
* Copyright (c) 2000-2002, 2004, 2006-2017 Glenn Randers-Pehrson, are
* derived from libpng-1.0.6, and are distributed according to the same
* disclaimer and license as libpng-1.0.6 with the following individuals
@ -213,7 +213,7 @@
* ...
* 1.5.28 15 10527 15.so.15.28[.0]
* ...
* 1.6.31 16 10631 16.so.16.31[.0]
* 1.6.32 16 10632 16.so.16.32[.0]
*
* Henceforth the source version will match the shared-library major
* and minor numbers; the shared-library major version number will be
@ -241,13 +241,13 @@
* Y2K compliance in libpng:
* =========================
*
* July 27, 2017
* August 24, 2017
*
* Since the PNG Development group is an ad-hoc body, we can't make
* an official declaration.
*
* This is your unofficial assurance that libpng from version 0.71 and
* upward through 1.6.31 are Y2K compliant. It is my belief that
* upward through 1.6.32 are Y2K compliant. It is my belief that
* earlier versions were also Y2K compliant.
*
* Libpng only has two year fields. One is a 2-byte unsigned integer
@ -309,8 +309,8 @@
*/
/* Version information for png.h - this should match the version in png.c */
#define PNG_LIBPNG_VER_STRING "1.6.31"
#define PNG_HEADER_VERSION_STRING " libpng version 1.6.31 - July 27, 2017\n"
#define PNG_LIBPNG_VER_STRING "1.6.32"
#define PNG_HEADER_VERSION_STRING " libpng version 1.6.32 - August 24, 2017\n"
#define PNG_LIBPNG_VER_SONUM 16
#define PNG_LIBPNG_VER_DLLNUM 16
@ -318,7 +318,7 @@
/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
#define PNG_LIBPNG_VER_MAJOR 1
#define PNG_LIBPNG_VER_MINOR 6
#define PNG_LIBPNG_VER_RELEASE 31
#define PNG_LIBPNG_VER_RELEASE 32
/* This should match the numeric part of the final component of
* PNG_LIBPNG_VER_STRING, omitting any leading zero:
@ -349,7 +349,7 @@
* version 1.0.0 was mis-numbered 100 instead of 10000). From
* version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release
*/
#define PNG_LIBPNG_VER 10631 /* 1.6.31 */
#define PNG_LIBPNG_VER 10632 /* 1.6.32 */
/* Library configuration: these options cannot be changed after
* the library has been built.
@ -459,7 +459,7 @@ extern "C" {
/* This triggers a compiler error in png.c, if png.c and png.h
* do not agree upon the version number.
*/
typedef char* png_libpng_version_1_6_31;
typedef char* png_libpng_version_1_6_32;
/* Basic control structions. Read libpng-manual.txt or libpng.3 for more info.
*
@ -2014,6 +2014,11 @@ PNG_EXPORT(246, png_uint_32, png_get_eXIf, (png_const_structrp png_ptr,
png_inforp info_ptr, png_bytep *exif));
PNG_EXPORT(247, void, png_set_eXIf, (png_const_structrp png_ptr,
png_inforp info_ptr, const png_bytep exif));
PNG_EXPORT(248, png_uint_32, png_get_eXIf_1, (png_const_structrp png_ptr,
png_const_inforp info_ptr, png_uint_32 *num_exif, png_bytep *exif));
PNG_EXPORT(249, void, png_set_eXIf_1, (png_const_structrp png_ptr,
png_inforp info_ptr, const png_uint_32 num_exif, const png_bytep exif));
#endif
#ifdef PNG_gAMA_SUPPORTED
@ -3259,7 +3264,7 @@ PNG_EXPORT(244, int, png_set_option, (png_structrp png_ptr, int option,
* one to use is one more than this.)
*/
#ifdef PNG_EXPORT_LAST_ORDINAL
PNG_EXPORT_LAST_ORDINAL(247);
PNG_EXPORT_LAST_ORDINAL(249);
#endif
#ifdef __cplusplus

2
pngconf.h
View File

@ -1,7 +1,7 @@
/* pngconf.h - machine configurable file for libpng
*
* libpng version 1.6.31, July 27, 2017
* libpng version 1.6.32, August 24, 2017
*
* Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)

15
pngget.c
View File

@ -1,8 +1,8 @@
/* pngget.c - retrieval of values from info struct
*
* Last changed in libpng 1.6.26 [October 20, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
* Last changed in libpng 1.6.32 [August 24, 2017]
* Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -777,12 +777,23 @@ png_get_sPLT(png_const_structrp png_ptr, png_inforp info_ptr,
png_uint_32 PNGAPI
png_get_eXIf(png_const_structrp png_ptr, png_inforp info_ptr,
png_bytep *exif)
{
png_warning(png_ptr, "png_get_eXIf does not work; use png_get_eXIf_1");
PNG_UNUSED(info_ptr)
PNG_UNUSED(exif)
return 0;
}
png_uint_32 PNGAPI
png_get_eXIf_1(png_const_structrp png_ptr, png_const_inforp info_ptr,
png_uint_32 *num_exif, png_bytep *exif)
{
png_debug1(1, "in %s retrieval function", "eXIf");
if (png_ptr != NULL && info_ptr != NULL &&
(info_ptr->valid & PNG_INFO_eXIf) != 0 && exif != NULL)
{
*num_exif = info_ptr->num_exif;
*exif = info_ptr->exif;
return (PNG_INFO_eXIf);
}

5
pnginfo.h
View File

@ -186,8 +186,11 @@ defined(PNG_READ_BACKGROUND_SUPPORTED)
#endif
#ifdef PNG_eXIf_SUPPORTED
int num_exif;
int num_exif; /* Added at libpng-1.6.31 */
png_bytep exif;
# ifdef PNG_READ_eXIf_SUPPORTED
png_bytep eXIf_buf; /* Added at libpng-1.6.32 */
# endif
#endif
#ifdef PNG_hIST_SUPPORTED

5
pngpread.c
View File

@ -1,8 +1,8 @@
/* pngpread.c - read a png file in push mode
*
* Last changed in libpng 1.6.24 [August 4, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
* Last changed in libpng 1.6.32 [August 24, 2017]
* Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -189,6 +189,7 @@ png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr)
png_crc_read(png_ptr, chunk_tag, 4);
png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(chunk_tag);
png_check_chunk_name(png_ptr, png_ptr->chunk_name);
png_check_chunk_length(png_ptr, png_ptr->push_length);
png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
}

14
pngpriv.h
View File

@ -1,7 +1,7 @@
/* pngpriv.h - private declarations for use inside libpng
*
* Last changed in libpng 1.6.31 [July 27, 2017]
* Last changed in libpng 1.6.32 [August 24, 2017]
* Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -1143,6 +1143,11 @@ PNG_INTERNAL_FUNCTION(void,png_write_sRGB,(png_structrp png_ptr,
int intent),PNG_EMPTY);
#endif
#ifdef PNG_WRITE_eXIf_SUPPORTED
PNG_INTERNAL_FUNCTION(void,png_write_eXIf,(png_structrp png_ptr,
png_bytep exif, int num_exif),PNG_EMPTY);
#endif
#ifdef PNG_WRITE_iCCP_SUPPORTED
PNG_INTERNAL_FUNCTION(void,png_write_iCCP,(png_structrp png_ptr,
png_const_charp name, png_const_bytep profile), PNG_EMPTY);
@ -1522,8 +1527,11 @@ PNG_INTERNAL_FUNCTION(void,png_handle_zTXt,(png_structrp png_ptr,
png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
#endif
PNG_INTERNAL_FUNCTION(void,png_check_chunk_name,(png_structrp png_ptr,
png_uint_32 chunk_name),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_check_chunk_name,(png_const_structrp png_ptr,
const png_uint_32 chunk_name),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_check_chunk_length,(png_const_structrp png_ptr,
const png_uint_32 chunk_length),PNG_EMPTY);
PNG_INTERNAL_FUNCTION(void,png_handle_unknown,(png_structrp png_ptr,
png_inforp info_ptr, png_uint_32 length, int keep),PNG_EMPTY);

13
pngread.c
View File

@ -1,7 +1,7 @@
/* pngread.c - read a PNG file
*
* Last changed in libpng 1.6.31 [July 27, 2017]
* Last changed in libpng 1.6.32 [August 24, 2017]
* Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -175,6 +175,11 @@ png_read_info(png_structrp png_ptr, png_inforp info_ptr)
png_handle_cHRM(png_ptr, info_ptr, length);
#endif
#ifdef PNG_READ_eXIf_SUPPORTED
else if (chunk_name == png_eXIf)
png_handle_eXIf(png_ptr, info_ptr, length);
#endif
#ifdef PNG_READ_gAMA_SUPPORTED
else if (chunk_name == png_gAMA)
png_handle_gAMA(png_ptr, info_ptr, length);
@ -534,6 +539,7 @@ png_read_row(png_structrp png_ptr, png_bytep row, png_bytep dsp_row)
png_error(png_ptr, "Invalid attempt to read row data");
/* Fill the row with IDAT data: */
png_ptr->row_buf[0]=255; /* to force error if no data was found */
png_read_IDAT_data(png_ptr, png_ptr->row_buf, row_info.rowbytes + 1);
if (png_ptr->row_buf[0] > PNG_FILTER_VALUE_NONE)
@ -842,6 +848,11 @@ png_read_end(png_structrp png_ptr, png_inforp info_ptr)
png_handle_cHRM(png_ptr, info_ptr, length);
#endif
#ifdef PNG_READ_eXIf_SUPPORTED
else if (chunk_name == png_eXIf)
png_handle_eXIf(png_ptr, info_ptr, length);
#endif
#ifdef PNG_READ_gAMA_SUPPORTED
else if (chunk_name == png_gAMA)
png_handle_gAMA(png_ptr, info_ptr, length);

143
pngrutil.c
View File

@ -1,7 +1,7 @@
/* pngrutil.c - utilities to read a PNG file
*
* Last changed in libpng 1.6.31 [July 27, 2017]
* Last changed in libpng 1.6.32 [August 24, 2017]
* Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -181,6 +181,9 @@ png_read_chunk_header(png_structrp png_ptr)
/* Check to see if chunk name is valid. */
png_check_chunk_name(png_ptr, png_ptr->chunk_name);
/* Check for too-large chunk length */
png_check_chunk_length(png_ptr, length);
#ifdef PNG_IO_STATE_SUPPORTED
png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_DATA;
#endif
@ -1377,11 +1380,13 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
* chunk is just ignored, so does not invalidate the color space. An
* alternative is to set the 'invalid' flags at the start of this routine
* and only clear them in they were not set before and all the tests pass.
* The minimum 'deflate' stream is assumed to be just the 2 byte header and
* 4 byte checksum. The keyword must be at least one character and there is
* a terminator (0) byte and the compression method.
*/
if (length < 9)
/* The keyword must be at least one character and there is a
* terminator (0) byte and the compression method byte, and the
* 'zlib' datastream is at least 11 bytes.
*/
if (length < 14)
{
png_crc_finish(png_ptr, length);
png_chunk_benign_error(png_ptr, "too short");
@ -1413,6 +1418,16 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
png_crc_read(png_ptr, (png_bytep)keyword, read_length);
length -= read_length;
/* The minimum 'zlib' stream is assumed to be just the 2 byte header,
* 5 bytes minimum 'deflate' stream, and the 4 byte checksum.
*/
if (length < 11)
{
png_crc_finish(png_ptr, length);
png_chunk_benign_error(png_ptr, "too short");
return;
}
keyword_length = 0;
while (keyword_length < 80 && keyword_length < read_length &&
keyword[keyword_length] != 0)
@ -1431,7 +1446,7 @@ png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
if (png_inflate_claim(png_ptr, png_iCCP) == Z_OK)
{
Byte profile_header[132];
Byte profile_header[132]={0};
Byte local_buffer[PNG_INFLATE_BUF_SIZE];
png_alloc_size_t size = (sizeof profile_header);
@ -2014,36 +2029,61 @@ void /* PRIVATE */
png_handle_eXIf(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
{
unsigned int i;
png_bytep eXIf_buf;
png_debug(1, "in png_handle_eXIf");
if ((png_ptr->mode & PNG_HAVE_IHDR) == 0)
png_chunk_error(png_ptr, "missing IHDR");
else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_eXIf) != 0)
if (length < 2)
{
png_crc_finish(png_ptr, length);
png_chunk_benign_error(png_ptr, "too short");
return;
}
else if (info_ptr == NULL || (info_ptr->valid & PNG_INFO_eXIf) != 0)
{
png_crc_finish(png_ptr, length);
png_chunk_benign_error(png_ptr, "duplicate");
return;
}
eXIf_buf = png_voidcast(png_bytep,
info_ptr->free_me |= PNG_FREE_EXIF;
info_ptr->eXIf_buf = png_voidcast(png_bytep,
png_malloc_warn(png_ptr, length));
if (info_ptr->eXIf_buf == NULL)
{
png_crc_finish(png_ptr, length);
png_chunk_benign_error(png_ptr, "out of memory");
return;
}
for (i = 0; i < length; i++)
{
png_byte buf[1];
png_crc_read(png_ptr, buf, 1);
eXIf_buf[i] = buf[0];
info_ptr->eXIf_buf[i] = buf[0];
if (i == 1 && buf[0] != 'M' && buf[0] != 'I'
&& info_ptr->eXIf_buf[0] != buf[0])
{
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 (png_crc_finish(png_ptr, 0) != 0)
return;
info_ptr->num_exif = length;
png_set_eXIf_1(png_ptr, info_ptr, length, info_ptr->eXIf_buf);
png_set_eXIf(png_ptr, info_ptr, eXIf_buf);
png_free(png_ptr, info_ptr->eXIf_buf);
info_ptr->eXIf_buf = NULL;
}
#endif
@ -2624,23 +2664,28 @@ png_handle_zTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
{
png_text text;
/* It worked; png_ptr->read_buffer now looks like a tEXt chunk except
* for the extra compression type byte and the fact that it isn't
* necessarily '\0' terminated.
*/
buffer = png_ptr->read_buffer;
buffer[uncompressed_length+(keyword_length+2)] = 0;
if (png_ptr->read_buffer == NULL)
errmsg="Read failure in png_handle_zTXt";
else
{
/* It worked; png_ptr->read_buffer now looks like a tEXt chunk
* except for the extra compression type byte and the fact that
* it isn't necessarily '\0' terminated.
*/
buffer = png_ptr->read_buffer;
buffer[uncompressed_length+(keyword_length+2)] = 0;
text.compression = PNG_TEXT_COMPRESSION_zTXt;
text.key = (png_charp)buffer;
text.text = (png_charp)(buffer + keyword_length+2);
text.text_length = uncompressed_length;
text.itxt_length = 0;
text.lang = NULL;
text.lang_key = NULL;
text.compression = PNG_TEXT_COMPRESSION_zTXt;
text.key = (png_charp)buffer;
text.text = (png_charp)(buffer + keyword_length+2);
text.text_length = uncompressed_length;
text.itxt_length = 0;
text.lang = NULL;
text.lang_key = NULL;
if (png_set_text_2(png_ptr, info_ptr, &text, 1) != 0)
errmsg = "insufficient memory";
if (png_set_text_2(png_ptr, info_ptr, &text, 1) != 0)
errmsg = "insufficient memory";
}
}
else
@ -3076,20 +3121,58 @@ png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr,
*/
void /* PRIVATE */
png_check_chunk_name(png_structrp png_ptr, png_uint_32 chunk_name)
png_check_chunk_name(png_const_structrp png_ptr, const png_uint_32 chunk_name)
{
int i;
png_uint_32 cn=chunk_name;
png_debug(1, "in png_check_chunk_name");
for (i=1; i<=4; ++i)
{
int c = chunk_name & 0xff;
int c = cn & 0xff;
if (c < 65 || c > 122 || (c > 90 && c < 97))
png_chunk_error(png_ptr, "invalid chunk type");
chunk_name >>= 8;
cn >>= 8;
}
}
void /* PRIVATE */
png_check_chunk_length(png_const_structrp png_ptr, const png_uint_32 length)
{
png_alloc_size_t limit = PNG_UINT_31_MAX;
if (png_ptr->chunk_name != png_IDAT)
{
# ifdef PNG_SET_USER_LIMITS_SUPPORTED
if (png_ptr->user_chunk_malloc_max > 0 &&
png_ptr->user_chunk_malloc_max < limit)
limit = png_ptr->user_chunk_malloc_max;
# elif PNG_USER_CHUNK_MALLOC_MAX > 0
if (PNG_USER_CHUNK_MALLOC_MAX < limit)
limit = PNG_USER_CHUNK_MALLOC_MAX;
# endif
}
else
{
size_t row_factor =
(png_ptr->width * png_ptr->channels * (png_ptr->bit_depth > 8? 2: 1)
+ 1 + (png_ptr->interlaced? 6: 0));
if (png_ptr->height > PNG_UINT_32_MAX/row_factor)
limit=PNG_UINT_31_MAX;
else
limit = png_ptr->height * row_factor;
limit += 6 + 5*(limit/32566+1); /* zlib+deflate overhead */
limit=limit < PNG_UINT_31_MAX? limit : PNG_UINT_31_MAX;
}
if (length > limit)
{
png_debug2(0," length = %lu, limit = %lu",
(unsigned long)length,(unsigned long)limit);
png_chunk_error(png_ptr, "chunk data is too large");
}
}

23
pngset.c
View File

@ -1,7 +1,7 @@
/* pngset.c - storage of image information into info struct
*
* Last changed in libpng 1.6.30 [June 28, 2017]
* Last changed in libpng 1.6.32 [August 24, 2017]
* Copyright (c) 1998-2017 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -138,6 +138,15 @@ png_set_cHRM_XYZ(png_const_structrp png_ptr, png_inforp info_ptr, double red_X,
void PNGAPI
png_set_eXIf(png_const_structrp png_ptr, png_inforp info_ptr,
const png_bytep eXIf_buf)
{
png_warning(png_ptr, "png_set_eXIf does not work; use png_set_eXIf_1");
PNG_UNUSED(info_ptr)
PNG_UNUSED(eXIf_buf)
}
void PNGAPI
png_set_eXIf_1(png_const_structrp png_ptr, png_inforp info_ptr,
const png_uint_32 num_exif, const png_bytep eXIf_buf)
{
int i;
@ -146,7 +155,13 @@ png_set_eXIf(png_const_structrp png_ptr, png_inforp info_ptr,
if (png_ptr == NULL || info_ptr == NULL)
return;
png_free_data(png_ptr, info_ptr, PNG_FREE_EXIF, 0);
if (info_ptr->exif)
{
png_free(png_ptr, info_ptr->exif);
info_ptr->exif = NULL;
}
info_ptr->num_exif = num_exif;
info_ptr->exif = png_voidcast(png_bytep, png_malloc_warn(png_ptr,
info_ptr->num_exif));
@ -154,13 +169,12 @@ png_set_eXIf(png_const_structrp png_ptr, png_inforp info_ptr,
if (info_ptr->exif == NULL)
{
png_warning(png_ptr, "Insufficient memory for eXIf chunk data");
return;
}
info_ptr->free_me |= PNG_FREE_EXIF;
for (i = 0; i < info_ptr->num_exif; i++)
for (i = 0; i < (int) info_ptr->num_exif; i++)
info_ptr->exif[i] = eXIf_buf[i];
info_ptr->valid |= PNG_INFO_eXIf;
@ -1388,6 +1402,7 @@ png_set_keep_unknown_chunks(png_structrp png_ptr, int keep,
static PNG_CONST png_byte chunks_to_ignore[] = {
98, 75, 71, 68, '\0', /* bKGD */
99, 72, 82, 77, '\0', /* cHRM */
101, 88, 73, 102, '\0', /* eXIf */
103, 65, 77, 65, '\0', /* gAMA */
104, 73, 83, 84, '\0', /* hIST */
105, 67, 67, 80, '\0', /* iCCP */

5
pngstruct.h
View File

@ -1,7 +1,7 @@
/* pngstruct.h - header file for PNG reference library
*
* Last changed in libpng 1.6.28 [January 5, 2017]
* Last changed in libpng 1.6.32 [August 24, 2017]
* Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -479,8 +479,5 @@ struct png_struct_def
png_colorspace colorspace;
#endif
#endif
/* New member added in libpng-1.6.31 */
int num_exif;
};
#endif /* PNGSTRUCT_H */

93
pngtest.c
View File

@ -1,8 +1,8 @@
/* pngtest.c - a simple test program to test libpng
*
* Last changed in libpng 1.6.26 [October 20, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
* Last changed in libpng 1.6.32 [August 24, 2017]
* Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -144,6 +144,7 @@ tIME_to_str(png_structp png_ptr, png_charp ts, png_const_timep t)
static int verbose = 0;
static int strict = 0;
static int relaxed = 0;
static int xfail = 0;
static int unsupported_chunks = 0; /* chunk unsupported by libpng in input */
static int error_count = 0; /* count calls to png_error */
static int warning_count = 0; /* count calls to png_warning */
@ -463,7 +464,7 @@ pngtest_warning(png_structp png_ptr, png_const_charp message)
if (test != NULL && test->file_name != NULL)
name = test->file_name;
fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
fprintf(STDERR, "\n%s: libpng warning: %s\n", name, message);
}
/* This is the default error handling function. Note that replacements for
@ -936,8 +937,12 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
png_free(read_ptr, row_buf);
row_buf = NULL;
if (verbose != 0)
fprintf(STDERR, " destroy read structs\n");
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
#ifdef PNG_WRITE_SUPPORTED
if (verbose != 0)
fprintf(STDERR, " destroy write structs\n");
png_destroy_info_struct(write_ptr, &write_end_info_ptr);
png_destroy_write_struct(&write_ptr, &write_info_ptr);
#endif
@ -952,11 +957,13 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
if (setjmp(png_jmpbuf(write_ptr)))
{
fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
if (verbose != 0)
fprintf(STDERR, " destroying read structs\n");
png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
if (verbose != 0)
fprintf(STDERR, " destroying write structs\n");
png_destroy_info_struct(write_ptr, &write_end_info_ptr);
#ifdef PNG_WRITE_SUPPORTED
png_destroy_write_struct(&write_ptr, &write_info_ptr);
#endif
FCLOSE(fpin);
FCLOSE(fpout);
return (1);
@ -1192,12 +1199,20 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#ifdef PNG_eXIf_SUPPORTED
#ifdef PNG_READ_eXIf_SUPPORTED
{
png_bytep exif;
png_bytep exif=NULL;
png_uint_32 exif_length;
if (png_get_eXIf(read_ptr, read_info_ptr, &exif) != 0)
png_set_eXIf(write_ptr, write_info_ptr, exif);
if (png_get_eXIf_1(read_ptr, read_info_ptr, &exif_length, &exif) != 0)
{
if (exif_length > 1)
fprintf(STDERR," eXIf type %c%c, %lu bytes\n",exif[0],exif[1],
(unsigned long)exif_length);
# ifdef PNG_WRITE_eXIf_SUPPORTED
png_set_eXIf_1(write_ptr, write_info_ptr, exif_length, exif);
# endif
}
}
#endif
#ifdef PNG_hIST_SUPPORTED
@ -1310,10 +1325,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
{
int i;
printf("\n");
fprintf(STDERR,"\n");
for (i=0; i<num_text; i++)
{
printf(" Text compression[%d]=%d\n",
fprintf(STDERR," Text compression[%d]=%d\n",
i, text_ptr[i].compression);
}
}
@ -1406,6 +1421,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
write_chunks(write_ptr, before_IDAT); /* after PLTE */
png_write_info(write_ptr, write_end_info_ptr);
write_chunks(write_ptr, after_IDAT); /* after IDAT */
#ifdef PNG_COMPRESSION_COMPAT
/* Test the 'compatibility' setting here, if it is available. */
png_set_compression(write_ptr, PNG_COMPRESSION_COMPAT);
@ -1526,10 +1545,10 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
{
int i;
printf("\n");
fprintf(STDERR,"\n");
for (i=0; i<num_text; i++)
{
printf(" Text compression[%d]=%d\n",
fprintf(STDERR," Text compression[%d]=%d\n",
i, text_ptr[i].compression);
}
}
@ -1538,12 +1557,20 @@ test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
}
}
#endif
#ifdef PNG_eXIf_SUPPORTED
#ifdef PNG_READ_eXIf_SUPPORTED
{
png_bytep exif;
png_bytep exif=NULL;
png_uint_32 exif_length;
if (png_get_eXIf(read_ptr, end_info_ptr, &exif) != 0)
png_set_eXIf(write_ptr, write_end_info_ptr, exif);
if (png_get_eXIf_1(read_ptr, end_info_ptr, &exif_length, &exif) != 0)
{
if (exif_length > 1)
fprintf(STDERR," eXIf type %c%c, %lu bytes\n",exif[0],exif[1],
(unsigned long)exif_length);
# ifdef PNG_WRITE_eXIf_SUPPORTED
png_set_eXIf_1(write_ptr, write_end_info_ptr, exif_length, exif);
# endif
}
}
#endif
#ifdef PNG_tIME_SUPPORTED
@ -1861,6 +1888,7 @@ main(int argc, char *argv[])
inname = argv[2];
strict++;
relaxed = 0;
multiple=1;
}
else if (strcmp(argv[1], "--relaxed") == 0)
@ -1870,6 +1898,17 @@ main(int argc, char *argv[])
inname = argv[2];
strict = 0;
relaxed++;
multiple=1;
}
else if (strcmp(argv[1], "--xfail") == 0)
{
status_dots_requested = 0;
verbose = 1;
inname = argv[2];
strict = 0;
xfail++;
relaxed++;
multiple=1;
}
else
@ -1927,8 +1966,13 @@ main(int argc, char *argv[])
else
{
fprintf(STDERR, " FAIL\n");
ierror += kerror;
if (xfail)
fprintf(STDERR, " XFAIL\n");
else
{
fprintf(STDERR, " FAIL\n");
ierror += kerror;
}
}
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
if (allocation_now != current_allocation)
@ -2016,8 +2060,13 @@ main(int argc, char *argv[])
#endif
}
fprintf(STDERR, " FAIL\n");
ierror += kerror;
if (xfail)
fprintf(STDERR, " XFAIL\n");
else
{
fprintf(STDERR, " FAIL\n");
ierror += kerror;
}
}
#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
if (allocation_now != current_allocation)
@ -2104,4 +2153,4 @@ main(void)
#endif
/* Generate a compiler error if there is an old png.h in the search path. */
typedef png_libpng_version_1_6_31 Your_png_h_is_not_version_1_6_31;
typedef png_libpng_version_1_6_32 Your_png_h_is_not_version_1_6_32;

13
pngwrite.c
View File

@ -1,7 +1,7 @@
/* pngwrite.c - general routines to write a PNG file
*
* Last changed in libpng 1.6.31 [July 27, 2017]
* Last changed in libpng 1.6.32 [August 24, 2017]
* Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
@ -237,6 +237,11 @@ png_write_info(png_structrp png_ptr, png_const_inforp info_ptr)
png_write_bKGD(png_ptr, &(info_ptr->background), info_ptr->color_type);
#endif
#ifdef PNG_WRITE_eXIf_SUPPORTED
if ((info_ptr->valid & PNG_INFO_eXIf) != 0)
png_write_eXIf(png_ptr, info_ptr->exif, info_ptr->num_exif);
#endif
#ifdef PNG_WRITE_hIST_SUPPORTED
if ((info_ptr->valid & PNG_INFO_hIST) != 0)
png_write_hIST(png_ptr, info_ptr->hist, info_ptr->num_palette);
@ -432,6 +437,12 @@ png_write_end(png_structrp png_ptr, png_inforp info_ptr)
}
}
#endif
#ifdef PNG_WRITE_eXIf_SUPPORTED
if ((info_ptr->valid & PNG_INFO_eXIf) != 0)
png_write_eXIf(png_ptr, info_ptr->exif, info_ptr->num_exif);
#endif
#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
write_unknown_chunks(png_ptr, info_ptr, PNG_AFTER_IDAT);
#endif

17
pngwutil.c
View File

@ -1,8 +1,8 @@
/* pngwutil.c - utilities to write a PNG file
*
* Last changed in libpng 1.6.26 [October 20, 2016]
* Copyright (c) 1998-2002,2004,2006-2016 Glenn Randers-Pehrson
* Last changed in libpng 1.6.32 [August 24, 2017]
* Copyright (c) 1998-2002,2004,2006-2017 Glenn Randers-Pehrson
* (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
* (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
*
@ -1479,24 +1479,15 @@ void /* PRIVATE */
png_write_eXIf(png_structrp png_ptr, png_bytep exif, int num_exif)
{
int i;
png_byte buf[3];
png_byte buf[1];
png_debug(1, "in png_write_eXIf");
if (num_exif > (int)png_ptr->num_exif)
{
png_debug2(3, "num_exif = %d, png_ptr->num_exif = %d", num_exif,
png_ptr->num_exif);
png_warning(png_ptr, "Invalid number of exif bytes specified");
return;
}
png_write_chunk_header(png_ptr, png_eXIf, (png_uint_32)(num_exif));
for (i = 0; i < num_exif; i++)
{
buf[i] = exif[i];
buf[0] = exif[i];
png_write_chunk_data(png_ptr, buf, (png_size_t)1);
}

2
projects/vstudio/README.txt
View File

@ -1,7 +1,7 @@
VisualStudio instructions
libpng version 1.6.31 - July 27, 2017
libpng version 1.6.32 - August 24, 2017
Copyright (c) 2010,2013,2015 Glenn Randers-Pehrson

2
projects/vstudio/zlib.props
View File

@ -2,7 +2,7 @@
<!--
* zlib.props - location of zlib source
*
* libpng version 1.6.31 - July 27, 2017
* libpng version 1.6.32 - August 24, 2017
*
* Copyright (c) 1998-2011 Glenn Randers-Pehrson
*

12
scripts/README.txt
View File

@ -1,11 +1,11 @@
Makefiles for libpng version 1.6.31 - July 27, 2017
Makefiles for libpng version 1.6.32 - August 24, 2017
pnglibconf.h.prebuilt => Stores configuration settings
makefile.linux => Linux/ELF makefile
(gcc, creates libpng16.so.16.1.6.31)
(gcc, creates libpng16.so.16.1.6.32)
makefile.linux-opt=> Linux/ELF makefile with hardware optimizations on
(gcc, creates libpng16.so.16.1.6.31)
(gcc, creates libpng16.so.16.1.6.32)
makefile.gcc => Generic makefile (gcc, creates static libpng.a)
makefile.knr => Archaic UNIX Makefile that converts files with
ansi2knr (Requires ansi2knr.c from
@ -35,12 +35,12 @@ pnglibconf.h.prebuilt => Stores configuration settings
makefile.os2 => OS/2 Makefile (gcc and emx, requires libpng.def)
makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
makefile.sggcc => Silicon Graphics (gcc,
creates libpng16.so.16.1.6.31)
creates libpng16.so.16.1.6.32)
makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
makefile.solaris => Solaris 2.X makefile (gcc,
creates libpng16.so.16.1.6.31)
creates libpng16.so.16.1.6.32)
makefile.so9 => Solaris 9 makefile (gcc,
creates libpng16.so.16.1.6.31)
creates libpng16.so.16.1.6.32)
makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
makefile.sunos => Sun makefile
makefile.32sunu => Sun Ultra 32-bit makefile

2
scripts/def.c
View File

@ -21,7 +21,7 @@ PNG_DFN "OS2 DESCRIPTION "PNG image compression library""
PNG_DFN "OS2 CODE PRELOAD MOVEABLE DISCARDABLE"
PNG_DFN ""
PNG_DFN "EXPORTS"
PNG_DFN ";Version 1.6.31"
PNG_DFN ";Version 1.6.32"
#define PNG_EXPORTA(ordinal, type, name, args, attributes)\
PNG_DFN "@" SYMBOL_PREFIX "@@" name "@"

2
scripts/libpng-config-head.in
View File

@ -11,7 +11,7 @@
# Modeled after libxml-config.
version=1.6.31
version=1.6.32
prefix=""
libdir=""
libs=""

2
scripts/libpng.pc.in
View File

@ -5,6 +5,6 @@ includedir=@includedir@/libpng16
Name: libpng
Description: Loads and saves PNG files
Version: 1.6.31
Version: 1.6.32
Libs: -L${libdir} -lpng16
Cflags: -I${includedir}

2
scripts/makefile.cegcc
View File

@ -23,7 +23,7 @@
VERMAJ = 1
VERMIN = 6
VERMIC = 31
VERMIC = 32
VER = $(VERMAJ).$(VERMIN).$(VERMIC)
NAME = libpng
PACKAGE = $(NAME)-$(VER)

2
scripts/makefile.linux
View File

@ -10,7 +10,7 @@
# Library name:
LIBNAME = libpng16
PNGMAJ = 16
RELEASE = 31
RELEASE = 32
# Shared library names:
LIBSO=$(LIBNAME).so

2
scripts/makefile.linux-opt
View File

@ -10,7 +10,7 @@
# Library name:
LIBNAME = libpng16
PNGMAJ = 16
RELEASE = 31
RELEASE = 32
# Shared library names:
LIBSO=$(LIBNAME).so

2
scripts/makefile.msys
View File

@ -18,7 +18,7 @@ exec_prefix=$(prefix)
# Library name:
LIBNAME = libpng16
PNGMAJ = 16
RELEASE = 31
RELEASE = 32
# Shared library names:
LIBSO=$(LIBNAME).dll

2
scripts/makefile.ne12bsd
View File

@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include/libpng16
LIB= png16
SHLIB_MAJOR= 0
SHLIB_MINOR= 1.6.31
SHLIB_MINOR= 1.6.32
SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c

2
scripts/makefile.netbsd
View File

@ -17,7 +17,7 @@ INCSDIR=${LOCALBASE}/include
LIB= png
SHLIB_MAJOR= 16
SHLIB_MINOR= 1.6.31
SHLIB_MINOR= 1.6.32
SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
pngwtran.c pngmem.c pngerror.c pngpread.c

2
scripts/makefile.openbsd
View File

@ -11,7 +11,7 @@ LIBDIR= ${PREFIX}/lib
MANDIR= ${PREFIX}/man/cat
SHLIB_MAJOR= 16
SHLIB_MINOR= 1.6.31
SHLIB_MINOR= 1.6.32
LIB= png
SRCS= png.c pngerror.c pngget.c pngmem.c pngpread.c \

1
scripts/pnglibconf.dfa
View File

@ -741,7 +741,6 @@ setting IDAT_READ_SIZE default PNG_ZBUF_SIZE
# Ancillary chunks
chunk bKGD
chunk cHRM enables COLORSPACE
# enable eXIf only after chunk is approved
chunk eXIf
chunk gAMA enables GAMMA
chunk hIST

4
scripts/pnglibconf.h.prebuilt
View File

@ -1,8 +1,8 @@
/* libpng 1.6.31 STANDARD API DEFINITION */
/* libpng 1.6.32 STANDARD API DEFINITION */
/* pnglibconf.h - library build configuration */
/* Libpng version 1.6.31 - July 27, 2017 */
/* Libpng version 1.6.32 - August 24, 2017 */
/* Copyright (c) 1998-2017 Glenn Randers-Pehrson */

4
scripts/symbols.def
View File

@ -1,4 +1,4 @@
;Version 1.6.31
;Version 1.6.32
;--------------------------------------------------------------
; LIBPNG symbol list as a Win32 DEF file
; Contains all the symbols that can be exported from libpng
@ -252,3 +252,5 @@ EXPORTS
png_image_write_to_memory @245
png_get_eXIf @246
png_set_eXIf @247
png_get_eXIf_1 @248
png_set_eXIf_1 @249

2
tests/pngtest
View File

@ -1,4 +1,2 @@
#!/bin/sh
./pngtest --relaxed ${srcdir}/tests/badcrc.png
./pngtest --relaxed ${srcdir}/tests/badadler.png
exec ./pngtest --strict ${srcdir}/pngtest.png

13
tests/pngtest-badpngs Executable file
View File

@ -0,0 +1,13 @@
#!/bin/sh
# various crashers
# using --relaxed because some come from fuzzers that don't maintain CRC's
./pngtest --relaxed ${srcdir}/contrib/testpngs/crashers/badcrc.png
./pngtest --relaxed ${srcdir}/contrib/testpngs/crashers/badadler.png
./pngtest --xfail ${srcdir}/contrib/testpngs/crashers/bad_iCCP.png
./pngtest --xfail ${srcdir}/contrib/testpngs/crashers/empty_ancillary_chunks.png
./pngtest --xfail ${srcdir}/contrib/testpngs/crashers/huge_*_chunk.png \
${srcdir}/contrib/testpngs/crashers/huge_*safe_to_copy.png
exec ./pngtest --xfail ${srcdir}/contrib/testpngs/crashers/huge_IDAT.png

2
tests/pngunknown-sAPI
View File

@ -1,2 +1,2 @@
#!/bin/sh
exec ./pngunknown --strict bKGD=save cHRM=save gAMA=save all=discard iCCP=save sBIT=save sRGB=save "${srcdir}/pngtest.png"
exec ./pngunknown --strict bKGD=save cHRM=save gAMA=save all=discard iCCP=save sBIT=save sRGB=save eXIf=save "${srcdir}/pngtest.png"