diff options
Diffstat (limited to 'pdf-as-lib')
| -rw-r--r-- | pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/PdfAsImpl.java | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/PdfAsImpl.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/PdfAsImpl.java index 0c2d8fbf..dcf1887a 100644 --- a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/PdfAsImpl.java +++ b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/PdfAsImpl.java @@ -226,12 +226,28 @@ public class PdfAsImpl implements PdfAs, IConfigurationConstants { .getDataSource().getByteData())); COSDictionary trailer = doc.getDocument().getTrailer(); + if(trailer == null) { + // No signatures ... + return result; + } COSDictionary root = (COSDictionary) trailer .getDictionaryObject(COSName.ROOT); + if(root == null) { + // No signatures ... + return result; + } COSDictionary acroForm = (COSDictionary) root .getDictionaryObject(COSName.ACRO_FORM); + if(acroForm == null) { + // No signatures ... + return result; + } COSArray fields = (COSArray) acroForm .getDictionaryObject(COSName.FIELDS); + if(fields == null) { + // No signatures ... + return result; + } int lastSig = -1; for (int i = 0; i < fields.size(); i++) { |