Hi Dominik,
I just encountered the same issue, so I grabbed the latest source from
the trunk, and I am still having issues. Maybe I missed something, but
looking at the code, I am unsure how this could work.
using the sample code from the initial poster we have:
PdfMemDocument *currentPodofoDocument=new PdfMemDocument();
try
{
currentPodofoDocument->Load(pdffilename);
}
catch(const PdfError&errorObject)
{
if(errorObject.GetError() == PoDoFo::ePdfError_InvalidPassword)
{
currentPodofoDocument->SetPassword(mypassword);
currentPodofoDocument->Load(pdffilename);
}
}
what I see happening is follows:
1) The first load call runs, and tosses the ePdfError_InvalidPassword
exception. (we have not yet called InitFromParser() or InitPagesTree()
2) Exception is caught, we call
currentPodofoDocument->SetPassword(mypassword); so that the
PdfMemDocument now has the password
3) we attempt to call load again
currentPodofoDocument->Load(pdffilename); here is where I think there
may be a problem:
looking at the load call:
void PdfMemDocument::Load( const char* pszFilename )
{
this->Clear();
m_pParser = new PdfParser( PdfDocument::GetObjects() );
m_pParser->ParseFile( pszFilename, true );
InitFromParser( m_pParser );
...
}
and looking at the clear call:
void PdfMemDocument::Clear()
{
if( m_pEncrypt )
{
delete m_pEncrypt;
m_pEncrypt = NULL;
}
delete m_pParser;
m_pParser = NULL;
PdfDocument::Clear();
}
It seems to me that upon the second load, PoDoFo will wipe both the
Encrypt and Parser objects, blowing away the password we just set.
Perhaps I missed something here, or perhaps the intent is not to call
load a second time. Can you provide any clarification?
Cheers!
~Michael Marsella
On 14/01/2010 2:49 PM, Dominik Seichter wrote:
Hi Bjoern,
Thanks for your very good bug report. I tested with SVN trunk and found the
very same issues (and even some more, including a memory leak).
I fixed all issues I found in SVN and also added a test PDF. If you upgrade to
SVN trunk, your issues should be resolved.
Best regards,
Dom
Am Freitag 08 Januar 2010 schrieb i...@gustavs.de:
Hi folks,
I got a problem using PdfMemDocument and wonder if this is because I miss
something or there is something missing in PdfMemDocument.
I made a password protected test-PDF.
Concerning the documentation i found, I need to call Load(...), get an
exception then call SetPassword.
But here is my problem:
When loading it with PdfMemDocument->Load(...), I get an exception with
the error "PoDoFo::ePdfError_InvalidPassword" - thats fine.
In that case I try SetPassword(...) which results in an exception because
when setting the password, m_pParser of my PDFMemDocument object is still
NULL although I tried loading the file before.
It is NULL because in PdfMemDocument::Load(...) the m_pParser is created by
m_pParser = new PdfParser( PdfDocument::GetObjects(), pszFilename, true );
...which tries to parse the document right ahead, which fails, which lets
m_pParser be NULL which is a problem calling when SetPassword.
I tried in PdfMemDocument::Load(...) to do the parsing after the m_pParser
creation. SetPassword(...) now works, reads stuff but the pagesTree of the
PDFDocument is NULL and so I am not able to access pages etc...
Is there hope for me?
Thanks for your time and reading this chaos. =)
Bjoern
A reduced code snipped:
PdfMemDocument *currentPodofoDocument=new PdfMemDocument();
try
{
currentPodofoDocument->Load(pdffilename);
}
catch(const PdfError&errorObject)
{
if(errorObject.GetError() == PoDoFo::ePdfError_InvalidPassword)
{
currentPodofoDocument->SetPassword(mypassword);
// currentPodofoDocument->Load(pdffilename);
}
}
page = currentPodofoDocument->GetPage(0);
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