Joseph Jezerinac created PDFBOX-6187: ----------------------------------------
Summary: NullPointerException in AppearanceGeneratorHelper when
PDFont.getName() returns null
Key: PDFBOX-6187
URL: https://issues.apache.org/jira/browse/PDFBOX-6187
Project: PDFBox
Issue Type: Bug
Affects Versions: 3.0.6 PDFBox
Environment: Java 17 (OpenJDK)
Reporter: Joseph Jezerinac
Attachments: FailingDocument-sample.pdf
When opening a PDF that contains an AcroForm text field whose font resource has
no /BaseFont entry, PDFont.getName() returns null. The default AcroForm fixup
triggered by getAcroForm() calls refreshAppearances(), which leads to a
NullPointerException in
AppearanceGeneratorHelper.insertGeneratedAppearance() at line 516, where
String.contains() is called on the null return value without a null check.
Steps to reproduce:
{code:java}
import org.apache.pdfbox.Loader;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
import java.io.File;
public class PdfBoxNullFontNameTest {
private static final String PDF_PATH =
"/path/to/FailingDocument-sample.pdf";
public static void main(String[] args) throws Exception {
File pdf = new File(PDF_PATH);
PDDocument doc = Loader.loadPDF(pdf);
PDAcroForm form = doc.getDocumentCatalog().getAcroForm();
}
}
{code}
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