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https://issues.apache.org/jira/browse/PDFBOX-2759?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14498388#comment-14498388
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ASF subversion and git services commented on PDFBOX-2759:
---------------------------------------------------------
Commit 1674118 from [~tilman] in branch 'pdfbox/trunk'
[ https://svn.apache.org/r1674118 ]
PDFBOX-2759: avoid NPE when indirect object appears in content stream
> NPE in BaseParser.parseCOSDictionaryValue() due to object reference in
> content stream
> -------------------------------------------------------------------------------------
>
> Key: PDFBOX-2759
> URL: https://issues.apache.org/jira/browse/PDFBOX-2759
> Project: PDFBox
> Issue Type: Bug
> Components: Parsing
> Affects Versions: 2.0.0
> Reporter: Tilman Hausherr
> Assignee: Tilman Hausherr
> Fix For: 2.0.0
>
> Attachments: PDFBOX-2759-317669-p213.pdf
>
>
> {code}
> java.lang.NullPointerException
> at
> org.apache.pdfbox.pdfparser.BaseParser.parseCOSDictionaryValue(BaseParser.java:235)
> at
> org.apache.pdfbox.pdfparser.BaseParser.parseCOSDictionary(BaseParser.java:311)
> at
> org.apache.pdfbox.pdfparser.PDFStreamParser.parseNextToken(PDFStreamParser.java:217)
> at
> org.apache.pdfbox.pdfparser.PDFStreamParser.access$000(PDFStreamParser.java:47)
> at
> org.apache.pdfbox.pdfparser.PDFStreamParser$1.tryNext(PDFStreamParser.java:144)
> at
> org.apache.pdfbox.pdfparser.PDFStreamParser$1.hasNext(PDFStreamParser.java:157)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:477)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:456)
> at
> org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:167)
> at
> org.apache.pdfbox.preflight.content.PreflightContentStream.validatePageContentStream(PreflightContentStream.java:72)
> at
> org.apache.pdfbox.preflight.process.reflect.SinglePageValidationProcess.validateContent(SinglePageValidationProcess.java:186)
> at
> org.apache.pdfbox.preflight.process.reflect.SinglePageValidationProcess.validate(SinglePageValidationProcess.java:89)
> at
> org.apache.pdfbox.preflight.utils.ContextHelper.callValidation(ContextHelper.java:83)
> at
> org.apache.pdfbox.preflight.utils.ContextHelper.validateElement(ContextHelper.java:55)
> at
> org.apache.pdfbox.preflight.process.PageTreeValidationProcess.validatePage(PageTreeValidationProcess.java:60)
> at
> org.apache.pdfbox.preflight.process.PageTreeValidationProcess.validate(PageTreeValidationProcess.java:48)
> at
> org.apache.pdfbox.preflight.utils.ContextHelper.callValidation(ContextHelper.java:83)
> at
> org.apache.pdfbox.preflight.utils.ContextHelper.validateElement(ContextHelper.java:121)
> at
> org.apache.pdfbox.preflight.PreflightDocument.validate(PreflightDocument.java:164)
> at
> com.mycompany.preflightmasstest.PreflightChecker.run(PreflightChecker.java:49)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
> at java.lang.Thread.run(Unknown Source)
> {code}
> The cause is a malformed content stream:
> {code}
> (186) Tj
> -132.88 -0.24 TD
> /F1 10.00 Tf
> (TOTAL RESOURCES:) Tj
> 162.08 0.00 TD
> (\(DAYS\)) Tj
> 155.92 16.48 TD
> (February 15, 2001) Tj
> ET
> Q 0 g 0 G
> endstream
> endobj
> 649 0 obj
> 4096
> endobj
> 647 0 obj
> <<
> /Type /Page
> /MediaBox [0 0 612 792]
> /Parent 3 0 R
> /Resources <</ProcSet [ /PDF /Text ] /Font << /F0 12 0 R /F1 13 0 R >> >>
> /Contents 648 0 R
> /CropBox [0 0 612 792]
> >>
> endobj
> {code}
> BaseParser.parseCOSDictionaryValue() is used both by PDFParser and by
> PDFStreamParser because these have a few things in common, e.g. dictionaries.
> The difference is that "document" is null for a content stream, so
> document.getObjectFromPool() fails.
> However the spec tells us: "Indirect objects and object references shall not
> be permitted at all" in content streams. I will throw an exception instead.
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