Major Description
The example signature.validation.AddValidationInformation fails with exception "Scratch file already closed" when we try to add the info to our certified file (enclosed).
The error occurs in AddValidationInformation.writeDataToStream(), line 421:
OutputStream os = stream.createOutputStream(filters);
Reading discussion in PDFBOX-3984, we tried to use a new COSStream() instead of scratch file, ie changed line 417 to
COSStream stream = new COSStream(); //document.getDocument().createCOSStream();
Then the example gets much further, but fails with same error in the final document.saveIncremental() call in AddValidationInformation.doValidation (line 141).
The same error occurs if we try the file multiSignatureBase.pdf from the PDFBOX-3984 issue ([^multi-Signature_Base.pdf)]
so it doesn't seem to be a problem with our specific file.
Our calling code:
String rootFolder = "/home/papasmurf/Documents/pdf-examples/";
File inFile = new File(rootFolder + "ebox_certified_eutl.pdf");
File outFile = new File(rootFolder + "ebox_validationinfo_test.pdf");
AddValidationInformation validator = new AddValidationInformation();
validator.validateSignature(inFile, outFile);
Eclipse output running the example:
Get Certificate from: http://q.ica.cz/2qca16_rsa.cer
Get Certificate from: http://r.ica.cz/rca15_rsa.cer
Get Certificate from: http://r.ica.cz/rca15_rsa.cer
Nonce: 04120410DD140ECDE05357A0A2F6E5001EDD9A7D
Exception in thread "main" java.io.IOException: java.io.IOException: Scratch file already closed
at org.apache.pdfbox.examples.signature.validation.AddValidationInformation.fetchCrlData(AddValidationInformation.java:330)
at org.apache.pdfbox.examples.signature.validation.AddValidationInformation.addRevocationDataRecursive(AddValidationInformation.java:248)
at org.apache.pdfbox.examples.signature.validation.AddValidationInformation.addRevocationData(AddValidationInformation.java:205)
at org.apache.pdfbox.examples.signature.validation.AddValidationInformation.doValidation(AddValidationInformation.java:136)
at org.apache.pdfbox.examples.signature.validation.AddValidationInformation.validateSignature(AddValidationInformation.java:88)
at com.tellustalk.javaworker.dss.SignPDF.main(SignPDF.java:233)
Caused by: java.io.IOException: Scratch file already closed
at org.apache.pdfbox.io.ScratchFile.checkClosed(ScratchFile.java:390)
at org.apache.pdfbox.io.ScratchFileBuffer.<init>(ScratchFileBuffer.java:78)
at org.apache.pdfbox.io.ScratchFile.createBuffer(ScratchFile.java:403)
at org.apache.pdfbox.cos.COSStream.createOutputStream(COSStream.java:221)
at org.apache.pdfbox.examples.signature.validation.AddValidationInformation.writeDataToStream(AddValidationInformation.java:421)
at org.apache.pdfbox.examples.signature.validation.AddValidationInformation.addCrlRevocationInfo(AddValidationInformation.java:377)
at org.apache.pdfbox.examples.signature.validation.AddValidationInformation.fetchCrlData(AddValidationInformation.java:315)
... 5 more
Grateful for any insights,
/rasmus ekman