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Posted to dev@pdfbox.apache.org by "Andreas Lehmkühler (JIRA)" <ji...@apache.org> on 2010/05/06 20:14:49 UTC

[jira] Resolved: (PDFBOX-703) Null pointer Exception with org.apache.fontbox.cff.CFFParser$DictData.getEntry(CFFParser.java:626)

     [ https://issues.apache.org/jira/browse/PDFBOX-703?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andreas Lehmkühler resolved PDFBOX-703.
---------------------------------------

    Fix Version/s: 1.2.0
       Resolution: Fixed

I've applied the patch with version 941835

Thanks to Peter for the contribution.

> Null pointer Exception with org.apache.fontbox.cff.CFFParser$DictData.getEntry(CFFParser.java:626)
> --------------------------------------------------------------------------------------------------
>
>                 Key: PDFBOX-703
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-703
>             Project: PDFBox
>          Issue Type: Bug
>          Components: FontBox
>         Environment: Not an issue, 
>            Reporter: Peter_Lenahan@ibi.com
>            Priority: Minor
>             Fix For: 1.2.0
>
>         Attachments: PDFBOX-703-CFFParser-nullpointerexception-patch.txt
>
>
> The code doesn't crash, however there are a lot of stack dumps in the log file.
> The 4 entry in the array below has a null for an operator
> org.apache.fontbox.cff.CFFParser$DictData$Entry[operands=[-18, 18, 608, 18, -248, 16, 262, 10], operator=BlueValues], 
> org.apache.fontbox.cff.CFFParser$DictData$Entry[operands=[240, 2, 114, 0, -576, 0], operator=OtherBlues], 
> org.apache.fontbox.cff.CFFParser$DictData$Entry[operands=[0.0479583], operator=BlueScale], 
> org.apache.fontbox.cff.CFFParser$DictData$Entry[operands=[0.06], operator=null], 
> org.apache.fontbox.cff.CFFParser$DictData$Entry[operands=[278], operator=defaultWidthX], 
> org.apache.fontbox.cff.CFFParser$DictData$Entry[operands=[551], operator=nominalWidthX], null, null, null, null
> In  the file org.apache.fontbox.cff.CFFParser.java:626  it fails to test for a null operator.
> I am not sure if the data is incorrect or if the code should just test for a null pointer exception.
> - Failed to create Type1C font. Falling back to Type1 font
> java.lang.NullPointerException
> 	at org.apache.fontbox.cff.CFFParser$DictData.getEntry(CFFParser.java:626)
> 	at org.apache.fontbox.cff.CFFParser$DictData.getEntry(CFFParser.java:619)
> 	at org.apache.fontbox.cff.CFFParser.getDelta(CFFParser.java:414)
> 	at org.apache.fontbox.cff.CFFParser.parseFont(CFFParser.java:358)
> 	at org.apache.fontbox.cff.CFFParser.parse(CFFParser.java:66)
> Proposed fix would be to test for a null operator and stop the crash.
>        private Entry getEntry(CFFOperator operator)
>         {
>             for (Entry entry : entries)
>             {
>             	// Check for null entry before comparing the Font
>             	//
>                 if (entry != null && entry.operator != null && 
>                     entry.operator.equals(operator))
>                 {
>                     return entry;
>                 }
>             }
>             return null;
>         }

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