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https://issues.apache.org/jira/browse/PDFBOX-4301?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16593578#comment-16593578
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ASF subversion and git services commented on PDFBOX-4301:
---------------------------------------------------------
Commit 1839305 from [email protected] in branch 'pdfbox/trunk'
[ https://svn.apache.org/r1839305 ]
PDFBOX-4301: check object type before casting to COSNumber in
PDExtendedGraphicsState.getFloatItem
> ClassCastException in PDExtendedGraphicsState
> ---------------------------------------------
>
> Key: PDFBOX-4301
> URL: https://issues.apache.org/jira/browse/PDFBOX-4301
> Project: PDFBox
> Issue Type: Bug
> Components: Parsing
> Affects Versions: 2.0.11
> Reporter: Timo Boehme
> Assignee: Timo Boehme
> Priority: Minor
>
> The method PDExtendedGraphicsState.getFloatItem contains a non checked cast
> to COSNumber for a dictionary object. In a specific journal PDF document I
> get the following exception:
> {noformat}
> at
> org.apache.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState.getFloatItem(PDExtendedGraphicsState.java:591)
> at
> org.apache.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState.getStrokingAlphaConstant(PDExtendedGraphicsState.java:482)
> at
> org.apache.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState.copyIntoGraphicsState(PDExtendedGraphicsState.java:130)
> at
> org.apache.pdfbox.contentstream.operator.state.SetGraphicsStateParameters.process(SetGraphicsStateParameters.java:61)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:848){noformat}
> because the PDF contains
> {noformat}
> /A4 <<
> /CA (1.0)
> /Type /ExtGState
> /ca (1.0)
> >>
> {noformat}
> where "(1.0)" is clearly wrong and should be "1.0".
> As this seems to be a more seldom error I would suggest to check dictionary
> object type before casting and returning "null" for wrong type (as it is done
> e.g. in PDExtendedGraphicsState.getFontSetting.
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