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44 lines
1.2 KiB
Python
44 lines
1.2 KiB
Python
from __future__ import annotations
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import io
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import warnings
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from PIL import Image, ImageDraw, ImageFile, ImageFilter, ImageFont
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def enable_decompressionbomb_error() -> None:
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ImageFile.LOAD_TRUNCATED_IMAGES = True
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warnings.filterwarnings("ignore")
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warnings.simplefilter("error", Image.DecompressionBombWarning)
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def disable_decompressionbomb_error() -> None:
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ImageFile.LOAD_TRUNCATED_IMAGES = False
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warnings.resetwarnings()
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def fuzz_image(data: bytes) -> None:
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# This will fail on some images in the corpus, as we have many
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# invalid images in the test suite.
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with Image.open(io.BytesIO(data)) as im:
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im.rotate(45)
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im.filter(ImageFilter.DETAIL)
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im.save(io.BytesIO(), "BMP")
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def fuzz_font(data: bytes) -> None:
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wrapper = io.BytesIO(data)
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try:
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font = ImageFont.truetype(wrapper)
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except OSError:
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# Catch pcf/pilfonts/random garbage here. They return
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# different font objects.
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return
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font.getbbox("ABC")
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font.getmask("test text")
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with Image.new(mode="RGBA", size=(200, 200)) as im:
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draw = ImageDraw.Draw(im)
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draw.multiline_textbbox((10, 10), "ABC\nAaaa", font, stroke_width=2)
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draw.text((10, 10), "Test Text", font=font, fill="#000")
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