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authorAlexander Marsalek <amarsalek@iaik.tugraz.at>2021-07-22 13:21:06 +0200
committerAlexander Marsalek <amarsalek@iaik.tugraz.at>2021-07-22 16:20:35 +0200
commit980eed2c3ffe3784747abd5dc6a6fdebbbe2caff (patch)
tree785fa406ee89957e04234e6ebe3b8d88088d7bd4 /pdf-as-pdfbox-2/src/main/java
parente1f63b5fa88dfa2a5ca3fe91d8b065753ce63a68 (diff)
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added getNextUnusedSignaturePlaceHolder => pdf over needs next unused placeholder issue #54
Diffstat (limited to 'pdf-as-pdfbox-2/src/main/java')
-rw-r--r--pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/pdfbox2/placeholder/SignatureFieldsAndPlaceHolderExtractor.java41
-rw-r--r--pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/pdfbox2/placeholder/SignaturePlaceholderExtractor.java5
-rw-r--r--pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox2/PADESPDFBOXSigner.java2
3 files changed, 37 insertions, 11 deletions
diff --git a/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/pdfbox2/placeholder/SignatureFieldsAndPlaceHolderExtractor.java b/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/pdfbox2/placeholder/SignatureFieldsAndPlaceHolderExtractor.java
index ca620aec..63552c2a 100644
--- a/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/pdfbox2/placeholder/SignatureFieldsAndPlaceHolderExtractor.java
+++ b/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/pdfbox2/placeholder/SignatureFieldsAndPlaceHolderExtractor.java
@@ -8,6 +8,7 @@ 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.io.IOException;
import java.util.ArrayList;
import java.util.List;
@@ -35,12 +36,27 @@ public class SignatureFieldsAndPlaceHolderExtractor {
/*
Needed by PDF-OVER
*/
- public static SignaturePlaceholderData getNextSignaturePlaceHolder(PDDocument doc) {
+
+ /**
+ * Returns the next unused signature placeholder
+ * @param doc The document to be searched for signature placeholders
+ * @return The next unused signature placeholder or null in case there is none
+ */
+ public static SignaturePlaceholderData getNextUnusedSignaturePlaceHolder(PDDocument doc) {
try {
- SignaturePlaceholderExtractor signaturePlaceholderExtractor = new SignaturePlaceholderExtractor("1",
- PlaceholderExtractorConstants.PLACEHOLDER_MATCH_MODE_SORTED, doc);
- return signaturePlaceholderExtractor.extract(doc, "1",
- PlaceholderExtractorConstants.PLACEHOLDER_MATCH_MODE_SORTED);
+ String placeholderId = "1";
+ int mode = PlaceholderExtractorConstants.PLACEHOLDER_MATCH_MODE_SORTED;
+ SignaturePlaceholderExtractor signaturePlaceholderExtractor = new SignaturePlaceholderExtractor( placeholderId,
+ mode, doc);
+ List<SignaturePlaceholderData> results = signaturePlaceholderExtractor.extractList(doc, placeholderId,
+ mode);
+ List<String> used = getExistingSignatureLocations(doc);
+ //return first not used
+ for(SignaturePlaceholderData result : results) {
+ if(!used.contains(result.getPlaceholderName()))
+ return result;
+ }
+ return null;
} catch (Exception e) {
e.printStackTrace();
return null;
@@ -69,4 +85,19 @@ public class SignatureFieldsAndPlaceHolderExtractor {
return null;
}
}
+
+ public static List<String> getExistingSignatureLocations(PDDocument doc) {
+ List<String> existingLocations = new ArrayList<>();
+ try {
+ List <PDSignature> pdSignatureList = doc.getSignatureDictionaries();
+ if(pdSignatureList.size() != 0) {
+ for(PDSignature sig : pdSignatureList) {
+ existingLocations.add(sig.getLocation());
+ }
+ }
+ } catch (IOException e) {
+ e.printStackTrace();
+ }
+ return existingLocations;
+ }
}
diff --git a/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/pdfbox2/placeholder/SignaturePlaceholderExtractor.java b/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/pdfbox2/placeholder/SignaturePlaceholderExtractor.java
index 71eef856..6df4f0b1 100644
--- a/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/pdfbox2/placeholder/SignaturePlaceholderExtractor.java
+++ b/pdf-as-pdfbox-2/src/main/java/at/gv/egiz/pdfas/lib/impl/pdfbox2/placeholder/SignaturePlaceholderExtractor.java
@@ -126,11 +126,6 @@ public class SignaturePlaceholderExtractor extends PDFStreamEngine implements Pl
this.doc = doc;
}
-// public static List<SignaturePlaceholderData> getPlaceholders() {
-// return placeholders;
-// }
-
-
/**
* Search the document for placeholder images and possibly included
* additional info.<br/>
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 3cf0853f..3e1b7d9a 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
@@ -162,7 +162,7 @@ public class PADESPDFBOXSigner implements IPdfSigner, IConfigurationConstants {
signature.setFilter(COSName.getPDFName(signer.getPDFFilter()));
signature.setSubFilter(COSName.getPDFName(signer.getPDFSubFilter()));
// SignaturePlaceholderData signaturePlaceholderDataInit =
- placeholders =PlaceholderFilter.checkPlaceholderSignatureLocationList(pdfObject.getStatus(),
+ placeholders = PlaceholderFilter.checkPlaceholderSignatureLocationList(pdfObject.getStatus(),
pdfObject.getStatus().getSettings(), placeholder_id);
// placeholders = SignaturePlaceholderExtractor.getPlaceholders();