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-rw-r--r--pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/pdfbox2/placeholder/SignatureFieldsExtractor.java33
-rw-r--r--pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox2/PADESPDFBOXSigner.java22
2 files changed, 34 insertions, 21 deletions
diff --git a/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/pdfbox2/placeholder/SignatureFieldsExtractor.java b/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/pdfbox2/placeholder/SignatureFieldsExtractor.java
new file mode 100644
index 00000000..a8473858
--- /dev/null
+++ b/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/pdfbox2/placeholder/SignatureFieldsExtractor.java
@@ -0,0 +1,33 @@
+package at.gv.egiz.pdfas.lib.impl.pdfbox2.placeholder;
+
+import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.interactive.digitalsignature.PDSignature;
+import org.apache.pdfbox.pdmodel.interactive.form.PDAcroForm;
+import org.apache.pdfbox.pdmodel.interactive.form.PDField;
+import org.apache.pdfbox.pdmodel.interactive.form.PDSignatureField;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class SignatureFieldsExtractor {
+
+ //Search for empty signature fields
+ public static List<String> findEmptySignatureFields(PDDocument doc)
+ {
+ PDSignature signature;
+ List<PDField> signatureField;
+ List<String> signatureFieldNames = new ArrayList<>();
+ PDAcroForm acroForm = doc.getDocumentCatalog().getAcroForm();
+ if (acroForm != null) {
+ signatureField = acroForm.getFields();
+ for (PDField pdField : signatureField) {
+ if(pdField instanceof PDSignatureField && pdField.getPartialName()!=null)
+ {
+ signature = ((PDSignatureField) pdField).getSignature();
+ if(signature == null) signatureFieldNames.add(pdField.getPartialName());
+ }
+ }
+ }
+ return signatureFieldNames;
+ }
+}
diff --git a/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox2/PADESPDFBOXSigner.java b/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox2/PADESPDFBOXSigner.java
index ccf99902..c37002c4 100644
--- a/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox2/PADESPDFBOXSigner.java
+++ b/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox2/PADESPDFBOXSigner.java
@@ -35,6 +35,7 @@ import at.gv.egiz.pdfas.lib.impl.ErrorExtractor;
import at.gv.egiz.pdfas.lib.impl.SignaturePositionImpl;
import at.gv.egiz.pdfas.lib.impl.configuration.SignatureProfileConfiguration;
import at.gv.egiz.pdfas.lib.impl.pdfbox2.PDFBOXObject;
+import at.gv.egiz.pdfas.lib.impl.pdfbox2.placeholder.SignatureFieldsExtractor;
import at.gv.egiz.pdfas.lib.impl.pdfbox2.positioning.Positioning;
import at.gv.egiz.pdfas.lib.impl.pdfbox2.utils.PdfBoxUtils;
import at.gv.egiz.pdfas.lib.impl.placeholder.PlaceholderFilter;
@@ -872,7 +873,6 @@ public class PADESPDFBOXSigner implements IPdfSigner, IConfigurationConstants {
// Find an existing signature.
private PDSignature findExistingSignature(PDDocument doc, String sigFieldName)
{
- findEmptySignatureFields(doc);
PDSignature signature = null;
PDSignatureField signatureField;
PDAcroForm acroForm = doc.getDocumentCatalog().getAcroForm();
@@ -899,24 +899,4 @@ public class PADESPDFBOXSigner implements IPdfSigner, IConfigurationConstants {
}
return signature;
}
-
- //Find empty signature fields
- private List<String> findEmptySignatureFields(PDDocument doc)
- {
- PDSignature signature;
- List<PDField> signatureField;
- List<String> signatureFieldNames = new ArrayList<>();
- PDAcroForm acroForm = doc.getDocumentCatalog().getAcroForm();
- if (acroForm != null) {
- signatureField = acroForm.getFields();
- for (PDField pdField : signatureField) {
- if(pdField instanceof PDSignatureField && pdField.getPartialName()!=null)
- {
- signature = ((PDSignatureField) pdField).getSignature();
- if(signature == null) signatureFieldNames.add(pdField.getPartialName());
- }
- }
- }
- return signatureFieldNames;
- }
} \ No newline at end of file