That stream that you show doesn’t have a filter. If it did, you’d see it on
the stream dictionary.
Instead, what you have is an unfiltered stream containing arbitrary data –
which in this case, just happens to be a ZIP file. But it could just as well
been a Word file, another PDF or even a .exe.
There is nothing for PoDoFo (or any other PDF library) to do here.
Leonard
From: Nadav Ben Jakov
Date: Tuesday, February 10, 2015 at 8:32 AM
To:
"podofo-users@lists.sourceforge.net<mailto:podofo-users@lists.sourceforge.net>"
Subject: [Podofo-users] Problem with enumerating objects with PoDoFo
Hi.
I'm new to the PoDoFo library, and I've been trying to use it for my program.
In general, my program needs to open a PDF file, decode all of its filters,
decrypt them with default password (if necessary), and print out all decoded
and decrypted objects.
So I saw that podofouncompress (using the PoDoFo library) pretty much does
that, so I tried to use the same library functions as he does. The whole
project went great from that point untill I've encountered an error. Apparently
the function PdfMemDocument::GetObjects() doesn't return all objects, but only
those who had been handled (or loaded?). Anyway, it will be great to find out a
way to get the entire pdf's object list decrypted and uncompressed
(PdfMemDocument::UncompressObjects()).
I've uploaded a sample file I've been woking on. In which object 2 generation 0
is clearly a zip file "embedded":
2 0 obj
<</Length 144>>stream
PK ÏyJFëEŒ‰% &
Text File.txtíÆ1
0 0+˜f“ðpLþŒ´WsºâÖÛ©ªªªªªª PK ÏyJFëEŒ‰% &
Text File.txtPK ; P
endstream
endobj
In the link bellow:
http://www57.zippyshare.com/v/or6jqo28/file.html
when scanning with podofo, only object 6 0 is available in the mentioned
function's output, and podofouncompress completely ignores object object 2 0
Thanks in advance,
Nadav
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