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LibPDF: Don't crash on images with empty filter arrays

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0000967.pdf page 2 contains a bunch of inline images with empty
filter arrays.
This commit is contained in:
Nico Weber 2023-12-19 19:30:13 -05:00 • committed by Andreas Kling
parent 13641693cb
commit b21f867e88
1 changed files with 2 additions and 0 deletions
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2
Userland/Libraries/LibPDF/Renderer.cpp
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@ -890,6 +890,8 @@ PDFErrorOr<NonnullRefPtr<Gfx::Bitmap>> Renderer::load_image(NonnullRefPtr<Stream
if (filter_object->is<NameObject>()) if (filter_object->is<NameObject>())
return filter_object->cast<NameObject>()->name() == name; return filter_object->cast<NameObject>()->name() == name;
auto filters = filter_object->cast<ArrayObject>(); auto filters = filter_object->cast<ArrayObject>();
if (filters->elements().is_empty())
return false;
auto last_filter_index = filters->elements().size() - 1; auto last_filter_index = filters->elements().size() - 1;
return MUST(filters->get_name_at(m_document, last_filter_index))->name() == name; return MUST(filters->get_name_at(m_document, last_filter_index))->name() == name;
}; };