Daniel Persson created PDFBOX-5795:
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Summary: Crash for Softmask with incorrect backdrop color
components
Key: PDFBOX-5795
URL: https://issues.apache.org/jira/browse/PDFBOX-5795
Project: PDFBox
Issue Type: Bug
Components: Rendering
Affects Versions: 3.0.2 PDFBox, 2.0.31
Reporter: Daniel Persson
Attachments: borsen-2065-20111030-1-p4.pdf, crashfix.patch
This error occured in our production of an old archive. None of the files
crashed in any other viewer (Chrome, Adobe, Firefox, Poppler a.s.o).
I've read up on the subject in the 1.7 specification, and it seems like PDFBox
is following the specification, but not being able to open these files seems a
bit too strict.
The easiest way to reproduce is just to open the attached file with the
debugger.
{code:java}
java -jar debugger-app-4.0.0-SNAPSHOT.jar borsen-2065-20111030-1-p4.pdf {code}
The application will crash with this exception:
{code:java}
Caused by: java.lang.ArrayIndexOutOfBoundsException: Index 1 out of bounds for
length 1
org.apache.pdfbox.pdmodel.graphics.color.PDColor.toRGB(PDColor.java:155)
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:1696)
org.apache.pdfbox.rendering.PageDrawer$TransparencyGroup.<init>(PageDrawer.java:1573)
org.apache.pdfbox.rendering.PageDrawer.applySoftMaskToPaint(PageDrawer.java:604)
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroupOnGraphics(PageDrawer.java:1549)
org.apache.pdfbox.rendering.PageDrawer.showTransparencyGroup(PageDrawer.java:1489)
org.apache.pdfbox.contentstream.operator.graphics.DrawObject.process(DrawObject.java:81)
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:872)
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:511)
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:489)
org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:158)
org.apache.pdfbox.rendering.PageDrawer.drawPage(PageDrawer.java:270)
org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:346)
org.apache.pdfbox.debugger.pagepane.PagePane$RenderWorker.doInBackground(PagePane.java:527)
org.apache.pdfbox.debugger.pagepane.PagePane$RenderWorker.doInBackground(PagePane.java:506)
java.base/java.lang.Thread.run(Thread.java:833)
{code}
My solution, added as a patch, is to add a fallback to the colorspace available
in the graphical context. This is working for the files I've tried so far.
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