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LibGfx: Use libpng's built-in signature verification

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Jelle Raaijmakers 2024-11-04 10:48:24 +01:00 committed by Andreas Kling
parent 0a569a9034
commit 2ce7ec8251
1 changed files with 3 additions and 3 deletions
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6
Userland/Libraries/LibGfx/ImageFormats/PNGLoader.cpp
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@ -327,10 +327,10 @@ PNGImageDecoderPlugin::~PNGImageDecoderPlugin() = default;
bool PNGImageDecoderPlugin::sniff(ReadonlyBytes data)
{
Array<u8, 8> png_signature { 0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a };
if (data.size() < png_signature.size())
auto constexpr png_signature_size_in_bytes = 8;
if (data.size() < png_signature_size_in_bytes)
return false;
return data.slice(0, png_signature.size()) == ReadonlyBytes(png_signature.data(), png_signature.size());
return png_sig_cmp(data.data(), 0, png_signature_size_in_bytes) == 0;
}
Optional<Metadata const&> PNGImageDecoderPlugin::metadata()