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Merge pull request #4239 from radarhere/photoshop

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Handle broken Photoshop data
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Andrew Murray 2019-12-01 07:33:26 +11:00 committed by GitHub
commit 2d7cfc4bbc
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3 changed files with 9 additions and 1 deletions
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Tests/images/photoshop-200dpi-broken.jpg Normal file
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5
Tests/test_file_jpeg.py
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@ -659,6 +659,11 @@ class TestFileJpeg(PillowTestCase):
}, },
) )
# Test that the image can still load, even with broken Photoshop data
# This image had the APP13 length hexedited to be smaller
with Image.open("Tests/images/photoshop-200dpi-broken.jpg") as im_broken:
self.assert_image_equal(im_broken, im)
# This image does not contain a Photoshop header string # This image does not contain a Photoshop header string
with Image.open("Tests/images/app13.jpg") as im: with Image.open("Tests/images/app13.jpg") as im:
self.assertNotIn("photoshop", im.info) self.assertNotIn("photoshop", im.info)

5
src/PIL/JpegImagePlugin.py
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@ -109,7 +109,10 @@ def APP(self, marker):
while blocks[offset : offset + 4] == b"8BIM": while blocks[offset : offset + 4] == b"8BIM":
offset += 4 offset += 4
# resource code # resource code
code = i16(blocks, offset) try:
code = i16(blocks, offset)
except struct.error:
break
offset += 2 offset += 2
# resource name (usually empty) # resource name (usually empty)
name_len = i8(blocks[offset]) name_len = i8(blocks[offset])