[PDFBOX-780] EXCEPTION_ACCESS_VIOLATION in fontmanager.so/fontmanager.dll

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.3.1
• Environment: redhat linux rhel5 and windows xp
• Assignee: Jukka Zitting
• Reporter: Matt Davis
• Created: 20/Jul/10 15:40
• Updated: 26/Oct/10 09:33
• Resolved: 24/Aug/10 11:59

Description

It seems when writing a PDF that has an invalid embedded font to an image there is a crash in the native function sun.font.FileFont.getGlyphImage(JI). It can be reproduced using the PDFToImage program on a pdf with an invalid embedded font.

Turing on -Dsun.java2d.debugfonts=true on a bad pdf will show some like the follow for the bad font

INFO: open TTF: C:\DOCUME~1\mdavis\LOCALS~1\Temp+~JF4968602841241472406.tmp
Jul 20, 2010 11:37:31 AM sun.font.TrueTypeGlyphMapper handleBadCMAP
SEVERE: Null Cmap for ** TrueType Font: Family=INKLBC+SymbolMT Name=INKLBC+SymbolMT style=0 fileName=C:\DOCUME~1\mdavis\LOCALS~1\Temp+~JF4968602841241472406.tmpsubstituting for this font
Jul 20, 2010 11:37:31 AM sun.font.FontManager deRegisterBadFont
SEVERE: Deregister bad font: ** TrueType Font: Family=INKLBC+SymbolMT Name=INKLBC+SymbolMT style=0 fileName=C:\DOCUME~1\mdavis\LOCALS~1\Temp+~JF4968602841241472406.tmp
Jul 20, 2010 11:37:31 AM sun.font.FileFontStrike <init>
INFO: Strike for ** TrueType Font: Family=INKLBC+SymbolMT Name=INKLBC+SymbolMT style=0 fileName=C:\DOCUME~1\mdavis\LOCALS~1\Temp+~JF4968602841241472406.tmp at size = 19 use natives = false useJavaRasteriser = true AAHint = 2 Has Embedded bitmaps = false

The following code in PDSimpleFont.java seems to fix the crash although I am not sure if it is correct:

public void drawString(String string, Graphics g, float fontSize, AffineTransform at, float x, float y) throws IOException {
Font _awtFont = getawtFont();

//mdavis - fix fontmanager.so/dll on sun.font.FileFont.getGlyphImage for font with bad cmaps?
if (_awtFont.canDisplayUpTo(string) != -1)

{ log.warn("Changing fonts on <" + string + "> from <" + _awtFont.getName() + "> to default font"); _awtFont = null; }

Graphics2D g2d = (Graphics2D) g;

Issue Links

• relates to: PDFBOX-774 convertToImage causes JVM crash on certain PDFs