[PDFBOX-2020] PDF/A Validation raises NullPointerException for PDFs without ImageColorSpace

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.8.6, 1.8.7, 2.0.0
• Fix Version/s: 1.8.7, 2.0.0
• Component/s: Preflight
• Labels: pdf/a validation
• Environment: Windows 7, Sun JDK7 64Bit
• Assignee: Tilman Hausherr
• Reporter: Ulrich Wohlfeil
• Created: 08/Apr/14 19:22
• Updated: 19/Sep/14 14:40
• Resolved: 29/Jul/14 19:22

Description

TestCode: Example Code http://pdfbox.apache.org/cookbook/pdfavalidation.html

If i check a PDF without ImageColorSpace the example Code raises the following NullPointerException:
Exception in thread "main" java.lang.NullPointerException
at org.apache.pdfbox.preflight.content.ContentStreamEngine.validImageColorSpace(ContentStreamEngine.java:323)
at org.apache.pdfbox.preflight.content.ContentStreamWrapper.processOperator(ContentStreamWrapper.java:179)
at org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:254)
at org.apache.pdfbox.util.PDFStreamEngine.processSubStream(PDFStreamEngine.java:221)
at org.apache.pdfbox.util.PDFStreamEngine.processStream(PDFStreamEngine.java:203)
at org.apache.pdfbox.preflight.content.ContentStreamWrapper.validPageContentStream(ContentStreamWrapper.java:76)
at org.apache.pdfbox.preflight.process.reflect.SinglePageValidationProcess.validateContent(SinglePageValidationProcess.java:180)
at org.apache.pdfbox.preflight.process.reflect.SinglePageValidationProcess.validate(SinglePageValidationProcess.java:88)
at org.apache.pdfbox.preflight.utils.ContextHelper.callValidation(ContextHelper.java:73)
at org.apache.pdfbox.preflight.utils.ContextHelper.validateElement(ContextHelper.java:52)
at org.apache.pdfbox.preflight.process.PageTreeValidationProcess.validatePage(PageTreeValidationProcess.java:58)
at org.apache.pdfbox.preflight.process.PageTreeValidationProcess.validate(PageTreeValidationProcess.java:47)
at org.apache.pdfbox.preflight.utils.ContextHelper.callValidation(ContextHelper.java:73)
at org.apache.pdfbox.preflight.utils.ContextHelper.validateElement(ContextHelper.java:88)
at org.apache.pdfbox.preflight.PreflightDocument.validate(PreflightDocument.java:169)
at PdfBox.main(PdfBox.java:33)

I think the method org.apache.pdfbox.pdmodel.PDResources.getColorSpaces (PDResources.java:311) did not return a object if their is no image color space but the code line org.apache.pdfbox.preflight.content.ContentStreamEngine.validImageColorSpace(ContentStreamEngine.java:323) expects a object in any case.

Issue Links

• duplicates: PDFBOX-2248 nullpointerexception on validImageColorSpace