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93 lines
4.5 KiB
Text
93 lines
4.5 KiB
Text
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Libpng 1.6.10 - March 6, 2014
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This is a public release of libpng, intended for use in production codes.
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Files available for download:
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Source files with LF line endings (for Unix/Linux) and with a
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"configure" script
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libpng-1.6.10.tar.xz (LZMA-compressed, recommended)
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libpng-1.6.10.tar.gz
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Source files with CRLF line endings (for Windows), without the
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"configure" script
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lpng1610.7z (LZMA-compressed, recommended)
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lpng1610.zip
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Other information:
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libpng-1.6.10-README.txt
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libpng-1.6.10-LICENSE.txt
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libpng-1.6.10-*.asc (armored detached GPG signatures)
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Changes since the last public release (1.6.9):
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Backported changes from libpng-1.7.0beta30 and beta31:
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Fixed a large number of instances where PNGCBAPI was omitted from
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function definitions.
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Added pngimage test program for png_read_png() and png_write_png()
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with two new test scripts.
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Removed dependence on !PNG_READ_EXPAND_SUPPORTED for calling
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png_set_packing() in png_read_png().
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Fixed combination of ~alpha with shift. On read invert alpha, processing
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occurred after shift processing, which causes the final values to be
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outside the range that should be produced by the shift. Reversing the
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order on read makes the two transforms work together correctly and mirrors
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the order used on write.
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Do not read invalid sBIT chunks. Previously libpng only checked sBIT
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values on write, so a malicious PNG writer could therefore cause
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the read code to return an invalid sBIT chunk, which might lead to
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application errors or crashes. Such chunks are now skipped (with
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chunk_benign_error).
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Make png_read_png() and png_write_png() prototypes in png.h depend
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upon PNG_READ_SUPPORTED and PNG_WRITE_SUPPORTED.
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Support builds with unsupported PNG_TRANSFORM_* values. All of the
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PNG_TRANSFORM_* values are always defined in png.h and, because they
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are used for both read and write in some cases, it is not reliable
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to #if out ones that are totally unsupported. This change adds error
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detection in png_read_image() and png_write_image() to do a
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png_app_error() if the app requests something that cannot be done
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and it adds corresponding code to pngimage.c to handle such options
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by not attempting to test them.
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Moved redefines of png_error(), png_warning(), png_chunk_error(),
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and png_chunk_warning() from pngpriv.h to png.h to make them visible
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to libpng-calling applications.
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Moved OS dependent code from arm/arm_init.c, to allow the included
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implementation of the ARM NEON discovery function to be set at
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build-time and provide sample implementations from the current code in the
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contrib/arm-neon subdirectory. The __linux__ code has also been changed to
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compile and link on Android by using /proc/cpuinfo, and the old linux code
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is in contrib/arm-neon/linux-auxv.c. The new code avoids POSIX and Linux
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dependencies apart from opening /proc/cpuinfo and is C90 compliant.
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Check for info_ptr == NULL early in png_read_end() so we don't need to
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run all the png_handle_*() and depend on them to return if info_ptr == NULL.
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This improves the performance of png_read_end(png_ptr, NULL) and makes
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it more robust against future programming errors.
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Check for __has_extension before using it in pngconf.h, to
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support older Clang versions (Jeremy Sequoia).
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Treat CRC error handling with png_set_crc_action(), instead of with
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png_set_benign_errors(), which has been the case since libpng-1.6.0beta18.
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Use a user warning handler in contrib/gregbook/readpng2.c instead of default,
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so warnings will be put on stderr even if libpng has CONSOLE_IO disabled.
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Added png_ptr->process_mode = PNG_READ_IDAT_MODE in png_push_read_chunk
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after recognizing the IDAT chunk, which avoids an infinite loop while
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reading a datastream whose first IDAT chunk is of zero-length.
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This fixes CERT VU#684412 and CVE-2014-0333.
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Don't recognize known sRGB profiles as sRGB if they have been hacked,
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but don't reject them and don't issue a copyright violation warning.
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Moved some documentation from png.h to libpng.3 and libpng-manual.txt
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Minor editing of contrib/arm-neon/README and contrib/examples/*.c
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Fixed typos in the manual and in scripts/pnglibconf.dfa (CFLAGS -> CPPFLAGS
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and PNG_USR_CONFIG -> PNG_USER_CONFIG).
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Un-deprecated png_data_freer().
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Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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(subscription required; visit
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https://lists.sourceforge.net/lists/listinfo/png-mng-implement
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to subscribe)
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or to glennrp at users.sourceforge.net
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Glenn R-P
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#endif
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