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LibGfx+Fuzz: Convert ImageDecoder::initialize to ErrorOr

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This prevents callers from accidentally discarding the result of
initialize(), which was the root cause of this OSS Fuzz bug:

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=55896&q=label%3AProj-serenity&sort=summary
This commit is contained in:
Ben Wiederhake 2023-05-07 19:27:07 +02:00 • committed by Sam Atkins
parent a84e64ed22
commit da394abe04
37 changed files with 125 additions and 105 deletions
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6
Userland/Libraries/LibGfx/ImageFormats/PNGLoader.cpp
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@ -1322,9 +1322,11 @@ bool PNGImageDecoderPlugin::set_nonvolatile(bool& was_purged)
return m_context->bitmap->set_nonvolatile(was_purged);
}
bool PNGImageDecoderPlugin::initialize()
ErrorOr<void> PNGImageDecoderPlugin::initialize()
{
return decode_png_header(*m_context);
if (decode_png_header(*m_context))
return {};
return Error::from_string_literal("bad image header");
}
bool PNGImageDecoderPlugin::sniff(ReadonlyBytes data)