Michal Stefan created PDFBOX-5755:
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Summary: fontbox component CmapSubtable
Key: PDFBOX-5755
URL: https://issues.apache.org/jira/browse/PDFBOX-5755
Project: PDFBox
Issue Type: Bug
Components: FontBox
Affects Versions: 2.0.28
Reporter: Michal Stefan
Hi,
there was a NPE in getCharCode method of CmapSubtable:
{code:java}
java.lang.NullPointerException: Cannot read the array length because
"this.glyphIdToCharacterCode" is null
at
org.apache.fontbox.ttf.CmapSubtable.getCharCode(CmapSubtable.java:669)
at
org.apache.fontbox.ttf.CmapSubtable.getCharCodes(CmapSubtable.java:686)
at
org.apache.pdfbox.pdmodel.font.PDType0Font.toUnicode(PDType0Font.java:533)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.showGlyph(PDFStreamEngine.java:838)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.showText(PDFStreamEngine.java:776)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.showTextStrings(PDFStreamEngine.java:681)
at
org.apache.pdfbox.contentstream.operator.text.ShowTextAdjusted.process(ShowTextAdjusted.java:53)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:966)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:541)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:516)
at
org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:155)
at
org.apache.pdfbox.text.LegacyPDFStreamEngine.processPage(LegacyPDFStreamEngine.java:155)
at
org.apache.pdfbox.text.PDFTextStripper.processPage(PDFTextStripper.java:363)
at
org.apache.pdfbox.text.PDFTextStripper.processPages(PDFTextStripper.java:291)
at
org.apache.pdfbox.text.PDFTextStripper.writeText(PDFTextStripper.java:238)
at
org.apache.pdfbox.text.PDFTextStripper.getText(PDFTextStripper.java:202){code}
Unfortunately I cannot provide pdf for privacy reason (and I don't have it
anyway), Looking at the code, it suggests that even if the
glyphIdToCharacterCode is null, it's still possible that
glyphIdToCharacerCode.length gets evaluated
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