[PDFBOX-5744] EOFException while readMultipleSubstitutionSubtable()

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.2 PDFBox
• Fix Version/s: 3.0.2 PDFBox, 4.0.0
• Component/s: FontBox
• Labels: gsub
• Assignee: Tilman Hausherr
• Reporter: Tilman Hausherr
• Created: 23/Dec/23 10:57
• Updated: 14/Mar/24 20:57
• Resolved: 23/Dec/23 11:04

Description

Another found because of PDFBOX-5743.

TrueTypeCollection ttc = new TrueTypeCollection(new File("NotoSerifMyanmar.ttc"));
ttc.processAllFonts((TrueTypeFont ttf) ->
{
    System.out.println(ttf.getName());
});

java.io.EOFException: EOF
at org.apache.fontbox.ttf.TTFDataStream.readUnsignedShort(TTFDataStream.java:154)
at org.apache.fontbox.ttf.TTFDataStream.readUnsignedShortArray(TTFDataStream.java:188)
at org.apache.fontbox.ttf.GlyphSubstitutionTable.readMultipleSubstitutionSubtable(GlyphSubstitutionTable.java:561)
at org.apache.fontbox.ttf.GlyphSubstitutionTable.readLookupSubtable(GlyphSubstitutionTable.java:284)
at org.apache.fontbox.ttf.GlyphSubstitutionTable.readLookupTable(GlyphSubstitutionTable.java:451)
at org.apache.fontbox.ttf.GlyphSubstitutionTable.readLookupList(GlyphSubstitutionTable.java:268)

Assuming that such font files are correct, the investigation showed that the table is read several times, i.e. the glyphCount variable was used wrongly.

Issue Links

• relates to: PDFBOX-5743 Getting a bunch of errors when running your simple Hello World example