[jira] Updated: (PDFBOX-468) index out of bounds exception

["Sean Bridges (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PDFBOX-468?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Bridges updated PDFBOX-468:
--------------------------------

    Attachment: patch

This patch fixes the issue.  The problem is the first read,

int nextIdx = pdfSource.read(buffer) % buffer.length; 

may return no contents, and nextIdx is -1.  This causes an index out of bounds exception on the first call to cmpCircularBuffer

To make the parser more reliable in the face of invalid input, it might be good to always do,

pdfSource.unread( ENDSTREAM ); or  pdfSource.unread( ENDOBJ );

in this method.  



> index out of bounds exception
> -----------------------------
>
>                 Key: PDFBOX-468
>                 URL: https://issues.apache.org/jira/browse/PDFBOX-468
>             Project: PDFBox
>          Issue Type: Bug
>            Reporter: Sean Bridges
>             Fix For: 0.8.0-incubator
>
>         Attachments: patch
>
>
> This is with  svn revision 773978
> I get an index out of bounds exception parsing pdf files, I can't give you the file but the exception is,
> Caused by: org.apache.pdfbox.exceptions.WrappedIOException
> 	at org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:228)
> 	at message_analyzer.extractor.PDFExtractor.getContent(PDFExtractor.java:32)
> 	... 19 more
> Caused by: java.lang.ArrayIndexOutOfBoundsException: -1
> 	at org.apache.pdfbox.pdfparser.BaseParser.cmpCircularBuffer(BaseParser.java:398)
> 	at org.apache.pdfbox.pdfparser.BaseParser.readUntilEndStream(BaseParser.java:355)
> 	at org.apache.pdfbox.pdfparser.BaseParser.parseCOSStream(BaseParser.java:322)
> 	at org.apache.pdfbox.pdfparser.PDFParser.parseObject(PDFParser.java:490)
> 	at org.apache.pdfbox.pdfparser.PDFParser.parse(PDFParser.java:169)
> 	... 20 more

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