One More: PoDoFo will crash if I add a custom attribute with more than
15 charaters in Info dictionary.
> _____________________________________________
> From: Shunli (Derek) Zheng
> Sent: Friday, September 26, 2008 3:20 PM
> To: '[email protected]'
> Cc: Xiang (Gavin) Ye; 'Scott Goldstein'; Bo Meng; Jiemin (Jim) Jin
> Subject: PoDoFo bug reports
>
> Hi PoDoFo supporters,
>
> Thanks for all your contribution to the PoDoFo project. It's a very
> good and useful open source project.
>
> Our company has a project that should add custom attributes to PDF
> file's Info dictionary. And we found some critical bugs of PoDoFo when
> doing test on it.
> 1. There is a crash bug in function PdfPredictorDecoder::Decode() of
> file PdfFiltersPrivate.cpp. You can test with pdf files that are
> converted from .bmp or .jpg by Adobe Acrobat.
> if( m_nCurRowIndex > m_nRows )
> {
> m_nCurRowIndex = 0;
> m_nCurPredictor = m_nPredictor >= 10 ? *pBuffer + 10 :
> *pBuffer;
> }
> else
> {
> ...
> case 12: // png up
> m_pPrev[m_nCurRowIndex] += *pBuffer;
> // Here m_nCurRowIndex may equal to m_nRows, and beyond the array
> boundary.
> pStream->Write( &m_pPrev[m_nCurRowIndex], 1 );
> ...
> }
>
> 2. PoDoFo will failed to parse pdf file if there are some syntax error
> in any dictionay.
> For example, for the following data, there is string in ( ), and
> the string contains two '('. PoDoFo will not parse the string
> correctly until EOF of the file.
> There are no bad syntax tolerance codes in the library. I think
> the bugs should be fixed.
> "... << ... /Title (....(..(hello world....) >> endobj ... "
>
> 3. If I open a pdf file (converted from .vsd file type) with PoDoFo,
> and add some custom attributes into Info dictionary, and write the
> whole back to a new pdf file.
> Then the new generated file will generate many new dictionaries,
> such as below data. And later if I add new custom attributes to the
> new generated pdf file,
> PoDoFo will parse the below data failed with "Invalid data type"
> error message. (# is not a delimiter)
> "100 0 obj << /C /# # # # # # # # ... /K ... >> endobj"
>
> 4. PoDoFo failed to parse PDF Portfolio file type with error message:
> No trailer was found in the PDF file.
>
> We will be appreciate if your team can fix these bugs in the new
> verson of PoDoFo code. Thanks very much!
>
> Regards,
>
> -Derek
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