[PDFBOX-4204] Problem when merging PDF 1.4 and PDF 1.1 Documents

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.9
• Fix Version/s: 2.0.10, 3.0.0 PDFBox
• Component/s: Parsing
• Flags: Patch
• Assignee: Tilman Hausherr
• Reporter: Christian Lauer
• Created: 20/Apr/18 05:56
• Updated: 21/Jun/18 20:27
• Resolved: 17/May/18 22:01

Description

Merging PDF 1.1 document with other Version (i.e. PDF 1.4) ends up with following exception: java.io.IOException: Unknown OpenAction COSInt{26}.

Here's the referring stack trace

Alias: PBOX000029: Enter the username:  [guest] java.io.IOException: Unknown OpenAction COSInt{26}
    at org.apache.pdfbox.pdmodel.PDDocumentCatalog.getOpenAction(PDDocumentCatalog.java:279)
    at org.apache.pdfbox.multipdf.PDFMergerUtility.appendDocument(PDFMergerUtility.java:348)
    at org.apache.pdfbox.multipdf.PDFMergerUtility.mergeDocuments(PDFMergerUtility.java:263)

 

To fix this issue COSInteger should be handled in PDDocumentCatalog's getOpenAction method. Our tests showed that returning “null” results in correctly merged document.

Here is our suggestion for the fixed method:

public PDDestinationOrAction getOpenAction() throws IOException {
   COSBase openAction = this.root.getDictionaryObject(COSName.OPEN_ACTION);
   if (openAction == null) {
     return null;
   } else if (openAction instanceof COSBoolean) {
     if (!((COSBoolean) openAction).getValue()) {
       return null;
     } else {
       throw new IOException("Can't create OpenAction from COSBoolean");
     }
  } else if (openAction instanceof COSInteger) {
     return null;      
   } else if (openAction instanceof COSDictionary) {
     return PDActionFactory.createAction((COSDictionary)openAction);
   } else if (openAction instanceof COSArray) {
     return PDDestination.create(openAction);
   } else {
     throw new IOException("Unknown OpenAction " + openAction);
   }
}

Issue Links

• is related to: PDFBOX-4223 PDFMergerUtility: java.io.IOException: Error: can't convert to Destination COSArray{[COSName{XYZ}]}