Hi,
I could not find where to post bug reports so I'll send email. I am
pretty sure I found (and fixed) a bug in iTextsharp:
using (MemoryStream memStream = new MemoryStream())
{
PdfStamper stamper = PdfStamper.CreateSignature(reader,
memStream, '\0');
stamper.Writer.CloseStream = false;
try
{
PdfSignatureAppearance sap =
stamper.SignatureAppearance;
sap.SetCrypto(akp, chain, null,
PdfSignatureAppearance.SELF_SIGNED);
// FIXME Change to VERISIGN when time is right
sap.Reason = signReason;
sap.Location = signLocation;
sap.SetVisibleSignature(new Rectangle(100, 100, 200,
200), 1, null);
}
finally
{
stamper.Close();
}
byte[] signedPDF = new byte[memStream.Length];
memStream.Seek(0, SeekOrigin.Begin);
Utility.readFile(memStream, signedPDF);
return signedPDF;
}
That code excepts with an ObjectDisposedException on the line "byte[]
signedPDF = new byte[memStream.Length];". that is why I added
"stamper.Writer.CloseStream = false;" which is supposed to cause
"stamper.Close();" NOT to close the outputstream. It seems it does
not honor this flag. I have changed this code to make it work:
In: PdfSignatureAppearance.cs
Method: public void Close(PdfDictionary update)
Changed the last lines from
if (originalout != null)
try{originalout.Close();}catch{}
to
if (originalout != null)
try{if (stamper.Writer.CloseStream)
originalout.Close();}catch{}
Regards,
Waldo
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