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From Tilman Hausherr <THaush...@t-online.de>
Subject Re: SignatureOptions object must not be closed before calling saveIncremental in trunk's CreateVisibleSignature example
Date Wed, 07 Oct 2015 19:36:51 GMT
Hi, I've reproduced the first problem and opened

https://issues.apache.org/jira/browse/PDFBOX-3010

Tilman

Am 07.10.2015 um 19:59 schrieb Rafael:
> Hi,
>
> Otherwise, you will get:
>
> ...
> org.apache.pdfbox.pdmodel.interactive.digitalsignature.visible.PDFTemplateCreator
> buildPDF
> INFO: stream returning started, size= 11019
> Exception in thread "main" java.io.IOException: COSStream has been closed
> and cannot be read. Perhaps its enclosing PDDocument has been closed?
> at org.apache.pdfbox.cos.COSStream.checkClosed(COSStream.java:78)
> at org.apache.pdfbox.cos.COSStream.createRawInputStream(COSStream.java:126)
> at
> org.apache.pdfbox.pdfwriter.COSWriter.visitFromStream(COSWriter.java:1138)
> at org.apache.pdfbox.cos.COSStream.accept(COSStream.java:372)
> at org.apache.pdfbox.cos.COSObject.accept(COSObject.java:158)
> at org.apache.pdfbox.pdfwriter.COSWriter.doWriteObject(COSWriter.java:538)
> at org.apache.pdfbox.pdfwriter.COSWriter.doWriteBody(COSWriter.java:450)
> at
> org.apache.pdfbox.pdfwriter.COSWriter.visitFromDocument(COSWriter.java:1039)
> at org.apache.pdfbox.cos.COSDocument.accept(COSDocument.java:409)
> at org.apache.pdfbox.pdfwriter.COSWriter.write(COSWriter.java:1289)
> at
> org.apache.pdfbox.pdmodel.PDDocument.saveIncremental(PDDocument.java:1118)
> at CreateVisibleSignature.signPDF(CreateVisibleSignature.java:169)
> at CreateVisibleSignature.main(CreateVisibleSignature.java:256)
>
> Moreover. Two questions:
>
> 1) Once I got rid of that IOE (by moving options.close() after
> doc.saveIncremental(cos)), I found that the example produces a corrupted
> signed pdf. The Signature Panel says:
>
> Rev. 1: Signed by signer name
> Signature is invalid:
> There are errors in the formatting or information contained in this
> signature (support information: SigDict /Contents illegal data)
> Signer's identity has not yet been verified
> Signing time is from the clock on the signer's computer.
> Last checked: 2015.10.07 19:41:53 +02'00'
> Field: Signature1 on page 1
>
> I couldn't find the reason for that. Any ideas about what's wrong with the
> example apart from that options closing?
>
> 2)  After a while I decided to create my own example (SignPDFPoC) by
> combining trunk CreateSignature and CreateVisibleSignature. With my
> example, I get a valid pdf after signing. Strange, cause it is just a "mix"
> of those 2 trunk examples. However, the Signature Panel always shows:
>
> Field: Signature1 on page 1
>
> I thought that PDVisibleSignDesigner.signatureFieldName was used for that
> purposes. But it does not seem to be the case. Moreover, for invisible
> signatures, no PDVisibleSignDesigner is used, so there must be a different
> way.
>
> So the question is: how can I set the value of "Field" shown by Signature
> Panel for both invisible and visible signatures?
>
> Br, Rafael
>


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