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-rw-r--r--pdf-as-pdfbox/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox/PADESPDFBOXSigner.java130
1 files changed, 98 insertions, 32 deletions
diff --git a/pdf-as-pdfbox/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox/PADESPDFBOXSigner.java b/pdf-as-pdfbox/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox/PADESPDFBOXSigner.java
index 954d4e92..16dfadf4 100644
--- a/pdf-as-pdfbox/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox/PADESPDFBOXSigner.java
+++ b/pdf-as-pdfbox/src/main/java/at/gv/egiz/pdfas/lib/impl/signing/pdfbox/PADESPDFBOXSigner.java
@@ -35,6 +35,7 @@ import java.io.InputStream;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
+import java.util.Map;
import org.apache.commons.io.IOUtils;
import org.apache.pdfbox.cos.COSArray;
@@ -43,7 +44,10 @@ import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSDocument;
import org.apache.pdfbox.cos.COSInteger;
import org.apache.pdfbox.cos.COSName;
+import org.apache.pdfbox.cos.COSNumber;
+import org.apache.pdfbox.cos.COSObject;
import org.apache.pdfbox.cos.COSString;
+import org.apache.pdfbox.cos.ICOSVisitor;
import org.apache.pdfbox.exceptions.COSVisitorException;
import org.apache.pdfbox.exceptions.SignatureException;
import org.apache.pdfbox.pdmodel.PDDocument;
@@ -51,6 +55,7 @@ import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDPageNode;
import org.apache.pdfbox.pdmodel.PDResources;
+import org.apache.pdfbox.pdmodel.common.COSObjectable;
import org.apache.pdfbox.pdmodel.common.PDNumberTreeNode;
import org.apache.pdfbox.pdmodel.documentinterchange.logicalstructure.PDStructureElement;
import org.apache.pdfbox.pdmodel.documentinterchange.logicalstructure.PDStructureTreeRoot;
@@ -472,10 +477,10 @@ public class PADESPDFBOXSigner implements IPdfSigner, IConfigurationConstants {
logger.info("Adding pdf/ua content.");
try {
PDDocumentCatalog root = doc.getDocumentCatalog();
- PDStructureTreeRoot treeRoot = root.getStructureTreeRoot();
- if (treeRoot != null) {
- logger.info("Tree Root: {}", treeRoot.toString());
- List<Object> kids = treeRoot.getKids();
+ PDStructureTreeRoot structureTreeRoot = root.getStructureTreeRoot();
+ if (structureTreeRoot != null) {
+ logger.info("Tree Root: {}", structureTreeRoot.toString());
+ List<Object> kids = structureTreeRoot.getKids();
if (kids == null) {
logger.info("No kid-elements in structure tree Root, maybe not PDF/UA document");
@@ -486,24 +491,23 @@ public class PADESPDFBOXSigner implements IPdfSigner, IConfigurationConstants {
if (k instanceof PDStructureElement) {
docElement = (PDStructureElement) k;
break;
- // if(((PDStructureElement)
- // k).getStructureType().equals("Document")){
- // docElement=(PDStructureElement) k;
- // }
+
}
}
PDStructureElement sigBlock = new PDStructureElement("Form", docElement);
// create object dictionary and add as child element
- COSDictionary objectdic = new COSDictionary();
- objectdic.setName("Type", "OBJR");
- objectdic.setItem("Pg", signatureField.getWidget().getPage());
- objectdic.setItem("Obj", signatureField.getWidget());
+ COSDictionary objectDic = new COSDictionary();
+ objectDic.setName("Type", "OBJR");
+ objectDic.setItem("Pg", signatureField.getWidget().getPage());
+ objectDic.setItem("Obj", signatureField.getWidget());
List<Object> l = new ArrayList<Object>();
- l.add(objectdic);
+ l.add(objectDic);
sigBlock.setKids(l);
+ sigBlock.setPage(signatureField.getWidget().getPage());
+
sigBlock.setTitle("Signature Table");
sigBlock.setParent(docElement);
@@ -520,36 +524,98 @@ public class PADESPDFBOXSigner implements IPdfSigner, IConfigurationConstants {
sigBlockDic.setNeedToBeUpdate(true);
// Modify number tree
- PDNumberTreeNode ntn = treeRoot.getParentTree();
+ PDNumberTreeNode ntn = structureTreeRoot.getParentTree();
+ int parentTreeNextKey = structureTreeRoot.getParentTreeNextKey();
if (ntn == null) {
- ntn = new PDNumberTreeNode(objectdic, null);
+ ntn = new PDNumberTreeNode(objectDic, null);
logger.info("No number-tree-node found!");
}
- COSDictionary ntndic = ntn.getCOSDictionary();
- COSArray ntndicnumbersarray = (COSArray) ntndic.getDictionaryObject(COSName.NUMS);
- int arrindex = ntndicnumbersarray.size();
- int treeindex = arrindex / 2;
-
- ntndicnumbersarray.add(arrindex, COSInteger.get(treeindex));
- ntndicnumbersarray.add(arrindex + 1, sigBlock.getCOSObject());
-
- treeRoot.setParentTree(ntn);
- treeRoot.setParentTreeNextKey(treeindex + 1);
-
- // setStructureParent
- PDAnnotationWidget widg = signatureField.getWidget();
- widg.setStructParent(treeindex);
+ COSArray ntnKids = (COSArray) ntn.getCOSDictionary().getDictionaryObject(COSName.KIDS);
+ COSArray ntnNumbers = (COSArray) ntn.getCOSDictionary().getDictionaryObject(COSName.NUMS);
+
+ if(ntnNumbers == null && ntnKids != null){//no number array, so continue with the kids array
+
+ //create dictionary with limits and nums array
+ COSDictionary pTreeEntry = new COSDictionary();
+ COSArray limitsArray = new COSArray();
+ //limits for exact one entry
+ limitsArray.add(COSInteger.get(parentTreeNextKey));
+ limitsArray.add(COSInteger.get(parentTreeNextKey));
+
+ COSArray numsArray = new COSArray();
+ numsArray.add(COSInteger.get(parentTreeNextKey));
+ numsArray.add(sigBlock);
+
+ pTreeEntry.setItem(COSName.NUMS, numsArray);
+ pTreeEntry.setItem(COSName.LIMITS, limitsArray);
+
+ PDNumberTreeNode newKidsElement = new PDNumberTreeNode(pTreeEntry, PDNumberTreeNode.class);
+
+ ntnKids.add(newKidsElement);
+ ntnKids.setNeedToBeUpdate(true);
+
+
+ //working
+// List<PDNumberTreeNode> treeRootKids = structureTreeRoot.getParentTree().getKids();
+// PDNumberTreeNode last = (PDNumberTreeNode)treeRootKids.get(treeRootKids.size()-1);
+// COSArray lim1 = (COSArray) last.getCOSDictionary().getDictionaryObject(COSName.LIMITS);
+// lim1.remove(1);
+// lim1.add(1, COSInteger.get(parentTreeNextKey));
+// PDNumberTreeNode verylast = (PDNumberTreeNode)last.getKids().get(last.getKids().size()-1);
+// COSArray numa = (COSArray) verylast.getCOSDictionary().getDictionaryObject(COSName.NUMS);
+// COSArray lim = (COSArray) verylast.getCOSDictionary().getDictionaryObject(COSName.LIMITS);
+// lim.remove(1);
+// lim.add(1, COSInteger.get(parentTreeNextKey));
+//
+// int size = numa.size();
+// numa.add(size, COSInteger.get(parentTreeNextKey));
+// numa.add(sigBlock);
+ //working end
+
+
+
+ }else if(ntnNumbers != null && ntnKids == null){
+
+ int arrindex = ntnNumbers.size();
+
+ ntnNumbers.add(arrindex, COSInteger.get(parentTreeNextKey));
+ ntnNumbers.add(arrindex + 1, sigBlock.getCOSObject());
+
+ ntnNumbers.getCOSObject().setNeedToBeUpdate(true);
+
+ structureTreeRoot.setParentTree(ntn);
+
+ }else if(ntnNumbers == null && ntnKids == null){
+ //document is not pdfua conform before signature creation
+ throw new PdfAsException("error.pdf.sig.pdfua.1");
+ }else{
+ //this is not allowed
+ throw new PdfAsException("error.pdf.sig.pdfua.1");
+ }
+
+ // set StructureParent for signature field annotation
+ signatureField.getWidget().setStructParent(parentTreeNextKey);
+
+ //Increase the next Key value in the structure tree root
+ structureTreeRoot.setParentTreeNextKey(parentTreeNextKey+1);
// add the Tabs /S Element for Tabbing through annots
PDPage p = signatureField.getWidget().getPage();
p.getCOSDictionary().setName("Tabs", "S");
p.getCOSObject().setNeedToBeUpdate(true);
+
+ //check alternative signature field name
+ if (signatureField != null) {
+ if(signatureField.getAlternateFieldName().equals(""))
+ signatureField.setAlternateFieldName(sigFieldName);
+ }
+
- ntndic.setNeedToBeUpdate(true);
+ ntn.getCOSDictionary().setNeedToBeUpdate(true);
sigBlock.getCOSObject().setNeedToBeUpdate(true);
- treeRoot.getCOSObject().setNeedToBeUpdate(true);
- objectdic.getCOSObject().setNeedToBeUpdate(true);
+ structureTreeRoot.getCOSObject().setNeedToBeUpdate(true);
+ objectDic.getCOSObject().setNeedToBeUpdate(true);
docElement.getCOSObject().setNeedToBeUpdate(true);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 21:16:00 +0000