[PDFBOX-4860] Preflight doesn't catch repetition of elements in XMP

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.19
• Fix Version/s: 2.0.21, 3.0.0 PDFBox
• Component/s: Preflight, XmpBox
• Assignee: Tilman Hausherr
• Reporter: Tilman Hausherr
• Created: 03/Jun/20 18:47
• Updated: 21/Aug/20 04:54
• Resolved: 05/Jun/20 14:58

Description

We don't catch this:

https://www.pdf-online.com/osa/validate.aspx

Validating file "Testdok-modified-003.pdf" for conformance level pdfa-1a
Multiple occurrences of property 'pdf:Producer'.
Multiple occurrences of property 'xmp:CreateDate'.
Multiple occurrences of property 'xmp:CreatorTool'.
The value of the key ToUnicode is invalid but must be compliant to the ToUnicode CMap format.
The document does not conform to the requested standard.
The document contains fonts without appropriate character to unicode mapping information (ToUnicode maps).
The document's meta data is either missing or inconsistent or corrupt.
The document does not conform to the PDF/A-1a standard.
Done.

I'm only focusing on the repetition in this issue.

 

<?xpacket begin="" id="W5M0MpCehiHzreSzNTczkc9d"?><x:xmpmeta xmlns:x="adobe:ns:meta/">
  <rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
    <rdf:Description xmlns:pdfaid="http://www.aiim.org/pdfa/ns/id/" rdf:about="">
      <pdfaid:part>1</pdfaid:part>
      <pdfaid:conformance>A</pdfaid:conformance>
    </rdf:Description>
    <rdf:Description xmlns:pdf="http://ns.adobe.com/pdf/1.3/" rdf:about="">
      <pdf:Producer>LibreOffice 5.4</pdf:Producer>
    </rdf:Description>
    <rdf:Description xmlns:xmp="http://ns.adobe.com/xap/1.0/" rdf:about="">
      <xmp:CreatorTool>Writer</xmp:CreatorTool>
      <xmp:CreateDate>2020-05-31T20:54:08+02:00</xmp:CreateDate>
    </rdf:Description>
    <rdf:Description xmlns:pdf="http://ns.adobe.com/pdf/1.3/" rdf:about="">
      <pdf:Keywords/>
      <pdf:Producer>LibreOffice 5.4</pdf:Producer>
    </rdf:Description>
    <rdf:Description xmlns:xmp="http://ns.adobe.com/xap/1.0/" rdf:about="">
      <xmp:ModifyDate>2020-06-03T08:38:15+02:00</xmp:ModifyDate>
      <xmp:CreateDate>2020-05-31T20:54:08+02:00</xmp:CreateDate>
      <xmp:CreatorTool>Writer</xmp:CreatorTool>
      <xmp:MetadataDate>2020-06-03T08:38:15+02:00</xmp:MetadataDate>
    </rdf:Description>
    <rdf:Description xmlns:dc="http://purl.org/dc/elements/1.1/" rdf:about="">
      <dc:title>
        <rdf:Alt>
          <rdf:li xml:lang="x-default">Default Title</rdf:li>
        </rdf:Alt>
      </dc:title>
      <dc:creator>
        <rdf:Seq>
          <rdf:li>PDFBox</rdf:li>
        </rdf:Seq>
      </dc:creator>
      <dc:description>
        <rdf:Alt>
          <rdf:li xml:lang="x-default">Default Subject</rdf:li>
        </rdf:Alt>
      </dc:description>
    </rdf:Description>
  </rdf:RDF>
</x:xmpmeta><?xpacket end="w"?>