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Ensure limitInputPixels uses uint64 (#3349)

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Marcos Casagrande 2022-09-06 10:05:51 +02:00 committed by GitHub
parent f7b29d7b59
commit eee0dd36d9
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4 changed files with 14 additions and 1 deletions
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3
src/common.cc
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@ -507,9 +507,10 @@ namespace sharp {
}
}
}
// Limit input images to a given number of pixels, where pixels = width * height
if (descriptor->limitInputPixels > 0 &&
static_cast<uint64_t>(image.width() * image.height()) > descriptor->limitInputPixels) {
static_cast<uint64_t>(image.width()) * image.height() > descriptor->limitInputPixels) {
throw vips::VError("Input image exceeds pixel limit");
}
return std::make_tuple(image, imageType);

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test/fixtures/65536-uint32-limit.png vendored Normal file
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1
test/fixtures/index.js vendored
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@ -98,6 +98,7 @@ module.exports = {
inputPngTrimSpecificColour: getPath('Flag_of_the_Netherlands.png'), // https://commons.wikimedia.org/wiki/File:Flag_of_the_Netherlands.svg
inputPngTrimSpecificColour16bit: getPath('Flag_of_the_Netherlands-16bit.png'), // convert Flag_of_the_Netherlands.png -depth 16 Flag_of_the_Netherlands-16bit.png
inputPngTrimSpecificColourIncludeAlpha: getPath('Flag_of_the_Netherlands-alpha.png'), // convert Flag_of_the_Netherlands.png -alpha set -background none -channel A -evaluate multiply 0.5 +channel Flag_of_the_Netherlands-alpha.png
inputPngUint32Limit: getPath('65536-uint32-limit.png'), // https://alexandre.alapetite.fr/doc-alex/large-image/
inputWebP: getPath('4.webp'), // http://www.gstatic.com/webp/gallery/4.webp
inputWebPWithTransparency: getPath('5_webp_a.webp'), // http://www.gstatic.com/webp/gallery3/5_webp_a.webp

11
test/unit/io.js
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@ -745,6 +745,17 @@ describe('Input/output', function () {
})
);
it('Enabling default limit works and fails for an image with resolution higher than uint32 limit', () =>
sharp(fixtures.inputPngUint32Limit, { limitInputPixels: true })
.toBuffer()
.then(() => {
assert.fail('Expected to fail');
})
.catch(err => {
assert.strictEqual(err.message, 'Input image exceeds pixel limit');
})
);
it('Smaller than input fails', () =>
sharp(fixtures.inputJpg)
.metadata()