Am Freitag, 26. September 2008 schrieb Dominik Seichter: > Hi, > > Am Freitag, 26. September 2008 schrieb Dominik Seichter: > > Hi, > > > > Thanks for the testcases. > > > > I fixed the bug/crash inside of the predictor. The fix is in SVN, could > > you please check if this fixes your issues? > > > > I can reproduce your problems in msft080305vxpm1.pdf and will come back > > to you as soon as I know what causes this problems. Fixed as well.
> > > > Regarding your issue with names. I can reproduce this two. Will come back > > as soon as I know the fix. > > I just commited a fix for this bug. > > regards, > Dom > > > best regards, > > Dom > > > > Am Freitag, 26. September 2008 schrieb Shunli (Derek) Zheng: > > > See my comments. Thanks! > > > > > > -----Original Message----- > > > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > > > Sent: Friday, September 26, 2008 6:06 PM > > > To: [email protected] > > > Cc: Shunli (Derek) Zheng > > > Subject: Re: [Podofo-users] PoDoFo bug reports > > > > > > Hi, > > > > > > Thanks for reporting these bugs. > > > > > > Am Freitag, 26. September 2008 schrieb Shunli (Derek) Zheng: > > > > 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 > > > > ); ... > > > > } > > > > > > Could you send me an example file for this problem? I think this bug > > > could be the solution to a bug David Roach is encountering. I will try > > > to fix it as soon as I can reproduce it. > > > > > > [Derek] Attached(bmp.pdf) > > > > > > > 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 ... " > > > > > > Well, you are right. PoDoFo currently accepts only valid PDF files. > > > Only balanced brackets are allowed to be not escaped in PDF, so your > > > file is broken. > > > > > > I currently have no time to add a fault-tollerant parser to PoDoFo, but > > > I will of course accept code contributions. I think so that the fault > > > tollerant parser should be optional. So that PoDoFo has to parsers (or > > > a property on > > > PdfParser) to specify that either only valid PDFs are accepted or that > > > PoDoFo should be more fault tollerant. > > > > > > [Derek] I'm sorry to say that the pdf file is created by PoDoFo file. > > > We add some custom attributes in msft080305vxpm1.pdf, and then new > > > generated pdf file will contain these bad syntax data. > > > > > > > 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" > > > > > > Quoting from the PDF Reference section 3.2.4 Name Objects: > > > "The name may include any regular characters, but not delimiter or > > > white-space characters (see Section 3.1, "Lexical Conventions")." > > > > > > So I think "/# # # #" is no legal name because of the whitespaces. So > > > how do these get in their? Does PoDoFo write them? Do we have an > > > encoding problem in PdfName? > > > > > > [Derek] I'm sorry to say that the pdf file is created by PoDoFo file. > > > We add some custom attributes in encryption_vsd.pdf, and then new > > > generated pdf file will contain these bad syntax data. White-space is > > > actually 0x00 data. > > > > > > > 4. PoDoFo failed to parse PDF Portfolio file type with error message: > > > > No trailer was found in the PDF file. > > > > > > I'll try to look into this. > > > > > > best regards, > > > Dom > > > > > > > We will be appreciate if your team can fix these bugs in the new > > > > verson of PoDoFo code. Thanks very much! > > > > > > > > Regards, > > > > > > > > -Derek > > > > > > > > - > > > > -------------------------------------------------------------------- > > > > STATEMENT OF CONFIDENTIALITY > > > > > > > > The information contained in this electronic message and any > > > > attachments to this message are intended for the exclusive use of the > > > > addressee(s) and may contain confidential or privileged information. > > > > No representation is made on its accuracy or completeness of the > > > > information contained in this electronic message. Certain assumptions > > > > may have been made in the preparation of this material as at this > > > > date, and are subject to change without notice. If you are not the > > > > intended recipient, you are hereby notified that any dissemination, > > > > distribution or copying of this e-mail and any attachment(s) is > > > > strictly prohibited. Please reply to the sender at NextLabs Inc and > > > > destroy all copies of this message and any attachments from your > > > > > > system. > > > > > > > ===================================================================== > > > >= > > > > > > -- > > > ********************************************************************** > > > Dominik Seichter - [EMAIL PROTECTED] > > > KRename - http://www.krename.net - Powerful batch renamer for KDE > > > KBarcode - http://www.kbarcode.net - Barcode and label printing PoDoFo > > > - http://podofo.sf.net - PDF generation and parsing library SchafKopf - > > > http://schafkopf.berlios.de - Schafkopf, a card game, for KDE Alan - > > > http://alan.sf.net - A Turing Machine in Java > > > ********************************************************************** > > > > > > - -------------------------------------------------------------------- > > > STATEMENT OF CONFIDENTIALITY > > > > > > The information contained in this electronic message and any > > > attachments to this message are intended for the exclusive use of the > > > addressee(s) and may contain confidential or privileged information. No > > > representation is made on its accuracy or completeness of the > > > information contained in this electronic message. Certain assumptions > > > may have been made in the preparation of this material as at this date, > > > and are subject to change without notice. If you are not the intended > > > recipient, you are hereby notified that any dissemination, distribution > > > or copying of this e-mail and any attachment(s) is strictly prohibited. > > > Please reply to the sender at NextLabs Inc and destroy all copies of > > > this message and any attachments from your system. > > > ====================================================================== -- ********************************************************************** Dominik Seichter - [EMAIL PROTECTED] KRename - http://www.krename.net - Powerful batch renamer for KDE KBarcode - http://www.kbarcode.net - Barcode and label printing PoDoFo - http://podofo.sf.net - PDF generation and parsing library SchafKopf - http://schafkopf.berlios.de - Schafkopf, a card game, for KDE Alan - http://alan.sf.net - A Turing Machine in Java **********************************************************************
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