added adobe sig attribute

git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@474 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c

1 files changed, 77 insertions, 3 deletions

diff --git a/src/main/java/at/knowcenter/wag/egov/egiz/pdf/BinarySignature.java b/src/main/java/at/knowcenter/wag/egov/egiz/pdf/BinarySignature.java
index d0cd951..f07d8c6 100644
--- a/src/main/java/at/knowcenter/wag/egov/egiz/pdf/BinarySignature.java
+++ b/src/main/java/at/knowcenter/wag/egov/egiz/pdf/BinarySignature.java
@@ -28,9 +28,13 @@ import java.security.cert.X509Certificate;
 import java.util.ArrayList;

 import java.util.Collections;

 import java.util.Comparator;

+import java.util.HashMap;

 import java.util.Iterator;

 import java.util.List;

 

+import javax.xml.datatype.DatatypeFactory;

+import javax.xml.datatype.XMLGregorianCalendar;

+

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 

@@ -40,6 +44,7 @@ import at.gv.egiz.pdfas.exceptions.pdf.CaptionNotFoundException;
 import at.gv.egiz.pdfas.exceptions.pdf.KZSettingNotFoundException;

 import at.gv.egiz.pdfas.framework.input.PdfDataSource;

 import at.gv.egiz.pdfas.framework.output.DataSink;

+import at.gv.egiz.pdfas.framework.signator.SignatorInformation;

 import at.knowcenter.wag.egov.egiz.cfg.SettingsReader;

 import at.knowcenter.wag.egov.egiz.exceptions.PDFDocumentException;

 import at.knowcenter.wag.egov.egiz.exceptions.PlaceholderException;

@@ -58,6 +63,7 @@ import com.lowagie.text.Rectangle;
 import com.lowagie.text.pdf.PRStream;

 import com.lowagie.text.pdf.PdfArray;

 import com.lowagie.text.pdf.PdfContentByte;

+import com.lowagie.text.pdf.PdfDate;

 import com.lowagie.text.pdf.PdfDictionary;

 import com.lowagie.text.pdf.PdfIndirectObject;

 import com.lowagie.text.pdf.PdfIndirectReference;

@@ -66,6 +72,8 @@ import com.lowagie.text.pdf.PdfNumber;
 import com.lowagie.text.pdf.PdfObject;

 import com.lowagie.text.pdf.PdfPTable;

 import com.lowagie.text.pdf.PdfReader;

+import com.lowagie.text.pdf.PdfSignature;

+import com.lowagie.text.pdf.PdfSignatureAppearance;

 import com.lowagie.text.pdf.PdfStamper;

 import com.lowagie.text.pdf.PdfStamperImp;

 import com.lowagie.text.pdf.PdfString;

@@ -775,7 +783,7 @@ public abstract class BinarySignature
    *           Forwarded exception.

    */

   public static IncrementalUpdateInformation writeIncrementalUpdate(PdfDataSource original_document, DataSink written_pdf, PdfPTable pdf_table, String profile, PositioningInstruction pi,

-      List variable_field_definitions, List all_field_definitions, List invisible_field_definitions, String invisibleKZString, TimeStamper timeStamper) throws PresentableException

+      List variable_field_definitions, List all_field_definitions, List invisible_field_definitions, String invisibleKZString, TimeStamper timeStamper, SignatorInformation si) throws PresentableException

   {

     try

     {

@@ -800,7 +808,8 @@ public abstract class BinarySignature
       // IMPORTANT: append the new content to the original document using

       // incremental updated

       // The stamper allows this by setting append = true

-      PdfStamper stamper = new PdfStamper(reader, baos, '\0', true);

+      //PdfStamper stamper = new PdfStamper(reader, baos, '\0', true);

+      PdfStamper stamper = PdfStamper.createSignature(reader, baos, '\0', null, true);

 

       if (pi.isMakeNewPage())

       {

@@ -895,7 +904,8 @@ public abstract class BinarySignature
         createEgizDict(stamper, table_template, iui, variable_field_definitions, all_field_definitions, invisible_field_definitions, invisibleKZString);

       }

 

-      stamper.close();

+      //stamper.close();

+      createAdobeSigAttrib(stamper, si, atp);  // here..., stamper is closed

       // System.out.println("wprinz: STAMPING FINISHED");

 

       // just to make sure the stream is really closed

@@ -917,6 +927,70 @@ public abstract class BinarySignature
   }

 

   /**

+   * Schreibt Adobe-pdf signatur attribut mittels itext

+   * @param stamper

+   * @param si

+   * @param atp

+   */

+  public static void  createAdobeSigAttrib(PdfStamper stamper, SignatorInformation si, ActualTablePos atp) {

+    

+    try {

+       logger.info("create adobe signature field");      

+       PdfSignatureAppearance sap = stamper.getSignatureAppearance();

+

+       sap.setCrypto(null, null, null, null);

+       // supress overlay text for visible signatures

+       sap.setLayer2Text("");

+       sap.setLayer4Text("");

+       

+       // the following line marks the sig block as adobe sig

+       //sap.setVisibleSignature(createRectangleFromTablePos(iui.actualTablePos), iui.actualTablePos.page, "PDF-AS-Signatur");

+       sap.setVisibleSignature(new Rectangle(0, 0, 0, 0), atp.page, "PDF-AS-Signatur");

+       String subfilter = "urn:pdfsigfilter:bka.gv.at:binaer:v1.1.0";

+       if (si != null) {

+          subfilter = si.getSignSignatureObject().kz;

+       }

+       PdfSignature sig = new PdfSignature(new PdfName("Adobe.PDF-AS"), new PdfName(subfilter));

+       // the following fields are not shown by the reader, because its is no Standard filter

+       //sig.setLocation("location is not visible");

+       //sig.setReason("reason is not visible");        

+       //sig.setContact("contact is not visible");

+       sig.setDate(new PdfDate());

+       if (si != null) {

+          XMLGregorianCalendar c =  DatatypeFactory.newInstance().newXMLGregorianCalendar(si.getSignSignatureObject().date);

+          sig.setDate(new PdfDate(c.toGregorianCalendar()));

+       }

+       String cn = null;

+       if (si != null) {

+          cn = si.getSignSignatureObject().certSubjectDNPart("CN");           

+       }

+       if (cn == null) {

+          cn = "PDF-AS";

+       }

+       sig.setName(cn);

+       sap.setCryptoDictionary(sig);

+       

+       // content element is mandatory but empty

+       HashMap exc = new HashMap();

+       exc.put(PdfName.CONTENTS, new Integer(2));

+       sap.preClose(exc); // *2+2

+          

+       PdfDictionary dic = new PdfDictionary();

+       dic.put(PdfName.CONTENTS, new PdfString((String)null).setHexWriting(true));

+       sap.close(dic);

+    } catch (Exception ex) {

+       logger.error("error", ex);

+       throw new RuntimeException(ex );

+    }

+

+    //stamper.close();

+ }

+  

+  private static Rectangle createRectangleFromTablePos(ActualTablePos pos) {

+     return new Rectangle(pos.x, pos.y, pos.x + pos.width, pos.y - pos.height);

+  }

+  

+  /**

    * Creates the EGIZ Dictionary and adds it to the document.

    * 

    * @param stamper