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120 lines
5.1 KiB
ReStructuredText
120 lines
5.1 KiB
ReStructuredText
10.3.0
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------
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Security
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========
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ImageMath eval()
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^^^^^^^^^^^^^^^^
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.. danger::
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``ImageMath.eval()`` uses Python's ``eval()`` function to process the expression
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string, and carries the security risks of doing so. A direct replacement for this is
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the new :py:meth:`~PIL.ImageMath.unsafe_eval`, but that carries the same risks. It is
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not recommended to process expressions without considering this.
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:py:meth:`~PIL.ImageMath.lambda_eval` is a more secure alternative.
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:cve:`2024-28219`: Fix buffer overflow in ``_imagingcms.c``
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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In ``_imagingcms.c``, two ``strcpy`` calls were able to copy too much data into fixed
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length strings. This has been fixed by using ``strncpy`` instead.
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Deprecations
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============
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ImageCms constants and versions() function
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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A number of constants and a function in :py:mod:`.ImageCms` have been deprecated.
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This includes a table of flags based on LittleCMS version 1 which has been replaced
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with a new class :py:class:`.ImageCms.Flags` based on LittleCMS 2 flags.
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============================================ ====================================================
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Deprecated Use instead
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============================================ ====================================================
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``ImageCms.DESCRIPTION`` No replacement
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``ImageCms.VERSION`` ``PIL.__version__``
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``ImageCms.FLAGS["MATRIXINPUT"]`` :py:attr:`.ImageCms.Flags.CLUT_POST_LINEARIZATION`
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``ImageCms.FLAGS["MATRIXOUTPUT"]`` :py:attr:`.ImageCms.Flags.FORCE_CLUT`
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``ImageCms.FLAGS["MATRIXONLY"]`` No replacement
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``ImageCms.FLAGS["NOWHITEONWHITEFIXUP"]`` :py:attr:`.ImageCms.Flags.NOWHITEONWHITEFIXUP`
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``ImageCms.FLAGS["NOPRELINEARIZATION"]`` :py:attr:`.ImageCms.Flags.CLUT_PRE_LINEARIZATION`
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``ImageCms.FLAGS["GUESSDEVICECLASS"]`` :py:attr:`.ImageCms.Flags.GUESSDEVICECLASS`
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``ImageCms.FLAGS["NOTCACHE"]`` :py:attr:`.ImageCms.Flags.NOCACHE`
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``ImageCms.FLAGS["NOTPRECALC"]`` :py:attr:`.ImageCms.Flags.NOOPTIMIZE`
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``ImageCms.FLAGS["NULLTRANSFORM"]`` :py:attr:`.ImageCms.Flags.NULLTRANSFORM`
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``ImageCms.FLAGS["HIGHRESPRECALC"]`` :py:attr:`.ImageCms.Flags.HIGHRESPRECALC`
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``ImageCms.FLAGS["LOWRESPRECALC"]`` :py:attr:`.ImageCms.Flags.LOWRESPRECALC`
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``ImageCms.FLAGS["GAMUTCHECK"]`` :py:attr:`.ImageCms.Flags.GAMUTCHECK`
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``ImageCms.FLAGS["WHITEBLACKCOMPENSATION"]`` :py:attr:`.ImageCms.Flags.BLACKPOINTCOMPENSATION`
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``ImageCms.FLAGS["BLACKPOINTCOMPENSATION"]`` :py:attr:`.ImageCms.Flags.BLACKPOINTCOMPENSATION`
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``ImageCms.FLAGS["SOFTPROOFING"]`` :py:attr:`.ImageCms.Flags.SOFTPROOFING`
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``ImageCms.FLAGS["PRESERVEBLACK"]`` :py:attr:`.ImageCms.Flags.NONEGATIVES`
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``ImageCms.FLAGS["NODEFAULTRESOURCEDEF"]`` :py:attr:`.ImageCms.Flags.NODEFAULTRESOURCEDEF`
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``ImageCms.FLAGS["GRIDPOINTS"]`` :py:attr:`.ImageCms.Flags.GRIDPOINTS()`
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``ImageCms.versions()`` :py:func:`PIL.features.version_module` with
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``feature="littlecms2"``, :py:data:`sys.version` or
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:py:data:`sys.version_info`, and ``PIL.__version__``
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============================================ ====================================================
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ImageMath.eval()
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^^^^^^^^^^^^^^^^
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``ImageMath.eval()`` has been deprecated. Use :py:meth:`~PIL.ImageMath.lambda_eval` or
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:py:meth:`~PIL.ImageMath.unsafe_eval` instead. See earlier security notes for more
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information.
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API Changes
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===========
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Added alpha_quality argument when saving WebP images
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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When saving WebP images, an ``alpha_quality`` argument can be passed to the encoder. It
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is an integer value between 0 to 100, where values other than 100 will provide lossy
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compression.
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Negative kmeans error
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^^^^^^^^^^^^^^^^^^^^^
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When calling :py:meth:`~PIL.Image.Image.quantize`, a negative ``kmeans`` will now
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raise a :py:exc:`ValueError`, unless a palette is supplied to make the value redundant.
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Negative P1-P3 PPM value error
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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If a P1-P3 PPM image contains a negative value, a :py:exc:`ValueError` will now be
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raised.
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API Additions
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=============
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Added PerspectiveTransform
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^^^^^^^^^^^^^^^^^^^^^^^^^^
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:py:class:`~PIL.ImageTransform.PerspectiveTransform` has been added, meaning
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that all of the :py:data:`~PIL.Image.Transform` values now have a corresponding
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subclass of :py:class:`~PIL.ImageTransform.Transform`.
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Other Changes
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=============
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Portable FloatMap (PFM) images
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Support has been added for reading and writing grayscale (Pf format)
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Portable FloatMap (PFM) files containing ``F`` data.
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Release GIL when fetching WebP frames
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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Python's Global Interpreter Lock is now released when fetching WebP frames from
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the libwebp decoder.
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Type hints
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^^^^^^^^^^
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Pillow now has type hints for a large part of its modules, and the package
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includes a ``py.typed`` file and the ``Typing :: Typed`` Trove classifier.
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