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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (PDFBOX-4521) Missing Info value from file trailer: org.apache.pdfbox.cos.COSName cannot be cast to org.apache.pdfbox.cos.COSDictionary
Date Sat, 20 Apr 2019 11:53:00 GMT

    [ https://issues.apache.org/jira/browse/PDFBOX-4521?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16822420#comment-16822420
] 

ASF subversion and git services commented on PDFBOX-4521:
---------------------------------------------------------

Commit 1857868 from Tilman Hausherr in branch 'pdfbox/trunk'
[ https://svn.apache.org/r1857868 ]

PDFBOX-4521: avoid ClassCastException

> Missing Info value from file trailer: org.apache.pdfbox.cos.COSName cannot be cast to
org.apache.pdfbox.cos.COSDictionary
> -------------------------------------------------------------------------------------------------------------------------
>
>                 Key: PDFBOX-4521
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-4521
>             Project: PDFBox
>          Issue Type: Bug
>          Components: Parsing
>    Affects Versions: 2.0.15
>            Reporter: Oliver Mannion
>            Priority: Major
>         Attachments: Editathon_cheat_sheet_(EN).pdf, Editathon_cheat_sheet_(EN)_MetaDefender.pdf
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> The following exception
> {code:java}
> Cause: java.lang.ClassCastException: org.apache.pdfbox.cos.COSName cannot be cast to
org.apache.pdfbox.cos.COSDictionary at org.apache.pdfbox.pdmodel.PDDocument.getDocumentInformation(PDDocument.java:740)
at org.apache.tika.parser.pdf.PDFParser.extractMetadata(PDFParser.java:242) at org.apache.tika.parser.pdf.PDFParser.parse(PDFParser.java:154)
at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280) at org.apache.tika.parser.CompositeParser.parse(CompositeParser.java:280)
at org.apache.tika.parser.AutoDetectParser.parse(AutoDetectParser.java:135){code}
> is generated by PDF documents that have no value in the file trailer for the {{Info}}
key, eg:
> {code:java}
> << /Size 50/Root 8 0 R/Info /ID >>
> {code}
> According to the [PDF spec|http://wwwimages.adobe.com/www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/pdf_reference_1-7.pdf] the
{{Info}} key is optional. PDFBox correctly handles the case when there is no {{Info}} key
and no value is present, but in this case, the key is present but without a value.



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