[Poppler-bugs] [Bug 64815] [TAGGEDPDF] Parse the Tagged-PDF document structure tree when present

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=64815

--- Comment #20 from Adrian Perez de Castro <aperez at igalia.com> ---
(In reply to comment #12)
> Wow, [PATCH v3 2/7] Tagged-PDF: Interpret the document structure is huge :D
> 
> I admit I haven't looked at the code in depth [...]

I have uploaded an updated patch set with the outstanding issues
already mentioned by Carlos Garcia Campos fixed. This updated patch
set has the big patch split in four, I hope that eases the review
process  O:-)

> [...] But I'll assume there's some tree structure parsing somewhere
> because PDF are full of those trees, are we protecting against loop
> in the tree somehow?

I didn't see code in Poppler that would be particularly useful to parse
the document structure tree. WRT loops in the structure tree, there is
no protection and a malformed PDF file could potentially cause an
infinite loop when parsing the tree. If I am understanding the PDF spec
correctly, well-formed PDFs must not have loops in the tree. How critical
would you say having protection against loops in the tree would be?

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