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authorAndreas Fitzek <andreas.fitzek@iaik.tugraz.at>2014-07-01 16:39:54 +0200
committerAndreas Fitzek <andreas.fitzek@iaik.tugraz.at>2014-07-01 16:40:38 +0200
commit5746571fe4513b454349be428230300907d86b2b (patch)
tree7a232cfb49f268c4952f462a4741b740c488ff10 /pdf-as-lib/src/main
parent19b27e99968233a285965daba6cc1e19a7406ce6 (diff)
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Added Preview Image generation of visual Signature block for PDF-Over
Diffstat (limited to 'pdf-as-lib/src/main')
-rw-r--r--pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/api/PdfAs.java14
-rw-r--r--pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/PdfAsImpl.java160
-rw-r--r--pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/pdfbox/PDFAsVisualSignatureProperties.java2
3 files changed, 174 insertions, 2 deletions
diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/api/PdfAs.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/api/PdfAs.java
index 15227c55..2ac02a18 100644
--- a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/api/PdfAs.java
+++ b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/api/PdfAs.java
@@ -23,6 +23,9 @@
******************************************************************************/
package at.gv.egiz.pdfas.lib.api;
+import iaik.x509.X509Certificate;
+
+import java.awt.Image;
import java.util.List;
import at.gv.egiz.pdfas.common.exceptions.PdfAsException;
@@ -84,4 +87,15 @@ public interface PdfAs {
* @throws PdfAsException
*/
public SignResult finishSign(StatusRequest statusRequest) throws PdfAsException;
+
+ /**
+ * Generates a Image of the visual signatur block as Preview
+ *
+ * @param parameter The signing Parameter
+ * @param cert The certificate to use to build the signature block
+ * @param resolution the resolution in dpi (dots per inch) (default is 72)
+ * @return
+ * @throws PdfAsException
+ */
+ public Image generateVisibleSignaturePreview(SignParameter parameter, X509Certificate cert, int resolution) throws PdfAsException;
}
diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/PdfAsImpl.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/PdfAsImpl.java
index b146edfe..b0a81341 100644
--- a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/PdfAsImpl.java
+++ b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/PdfAsImpl.java
@@ -23,21 +23,32 @@
******************************************************************************/
package at.gv.egiz.pdfas.lib.impl;
+import iaik.x509.X509Certificate;
+
+import java.awt.Graphics2D;
+import java.awt.Image;
+import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
+import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.List;
+import javax.imageio.ImageIO;
+
import org.apache.pdfbox.cos.COSArray;
import org.apache.pdfbox.cos.COSBase;
import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.cos.COSString;
import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDPage;
+import org.apache.pdfbox.pdmodel.PDPageable;
+import org.apache.pdfbox.util.PDFImageWriter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
@@ -47,7 +58,9 @@ import at.gv.egiz.pdfas.common.exceptions.PdfAsSettingsException;
import at.gv.egiz.pdfas.common.exceptions.PdfAsValidationException;
import at.gv.egiz.pdfas.common.settings.ISettings;
import at.gv.egiz.pdfas.common.settings.Settings;
+import at.gv.egiz.pdfas.common.settings.SignatureProfileSettings;
import at.gv.egiz.pdfas.common.utils.PDFUtils;
+import at.gv.egiz.pdfas.common.utils.StreamUtils;
import at.gv.egiz.pdfas.lib.api.Configuration;
import at.gv.egiz.pdfas.lib.api.IConfigurationConstants;
import at.gv.egiz.pdfas.lib.api.PdfAs;
@@ -57,14 +70,26 @@ import at.gv.egiz.pdfas.lib.api.sign.SignResult;
import at.gv.egiz.pdfas.lib.api.verify.VerifyParameter;
import at.gv.egiz.pdfas.lib.api.verify.VerifyResult;
import at.gv.egiz.pdfas.lib.impl.configuration.ConfigurationImpl;
+import at.gv.egiz.pdfas.lib.impl.configuration.SignatureProfileConfiguration;
+import at.gv.egiz.pdfas.lib.impl.positioning.Positioning;
import at.gv.egiz.pdfas.lib.impl.signing.IPdfSigner;
import at.gv.egiz.pdfas.lib.impl.signing.PdfSignerFactory;
import at.gv.egiz.pdfas.lib.impl.signing.pdfbox.PdfboxSignerWrapper;
import at.gv.egiz.pdfas.lib.impl.signing.sig_interface.SignatureDataExtractor;
+import at.gv.egiz.pdfas.lib.impl.stamping.IPDFStamper;
+import at.gv.egiz.pdfas.lib.impl.stamping.IPDFVisualObject;
+import at.gv.egiz.pdfas.lib.impl.stamping.StamperFactory;
+import at.gv.egiz.pdfas.lib.impl.stamping.TableFactory;
+import at.gv.egiz.pdfas.lib.impl.stamping.pdfbox.PDFAsVisualSignatureProperties;
+import at.gv.egiz.pdfas.lib.impl.stamping.pdfbox.PdfBoxVisualObject;
import at.gv.egiz.pdfas.lib.impl.status.OperationStatus;
+import at.gv.egiz.pdfas.lib.impl.status.PDFObject;
import at.gv.egiz.pdfas.lib.impl.status.RequestedSignature;
import at.gv.egiz.pdfas.lib.impl.verify.IVerifyFilter;
import at.gv.egiz.pdfas.lib.impl.verify.VerifierDispatcher;
+import at.knowcenter.wag.egov.egiz.pdf.PositioningInstruction;
+import at.knowcenter.wag.egov.egiz.pdf.TablePos;
+import at.knowcenter.wag.egov.egiz.table.Table;
public class PdfAsImpl implements PdfAs, IConfigurationConstants {
@@ -187,7 +212,7 @@ public class PdfAsImpl implements PdfAs, IConfigurationConstants {
e);
throw new PdfAsException("error.pdf.sig.01", e);
} finally {
- if(status != null) {
+ if (status != null) {
status.clear();
}
logger.trace("sign done");
@@ -429,7 +454,7 @@ public class PdfAsImpl implements PdfAs, IConfigurationConstants {
} catch (IOException e) {
throw new PdfAsException("error.pdf.sig.06", e);
} finally {
- if(status != null) {
+ if (status != null) {
status.clear();
}
}
@@ -456,4 +481,135 @@ public class PdfAsImpl implements PdfAs, IConfigurationConstants {
return result;
}
+ public Image generateVisibleSignaturePreview(SignParameter parameter, X509Certificate cert, int resolution)
+ throws PdfAsException {
+
+ OperationStatus status = null;
+ try {
+ // Status initialization
+ if (!(parameter.getConfiguration() instanceof ISettings)) {
+ throw new PdfAsSettingsException("Invalid settings object!");
+ }
+
+ ISettings settings = (ISettings) parameter.getConfiguration();
+ status = new OperationStatus(settings, parameter);
+
+ RequestedSignature requestedSignature = new RequestedSignature(
+ status);
+ requestedSignature.setCertificate(cert);
+
+ if (!requestedSignature.isVisual()) {
+ return null;
+ }
+
+ PDFObject pdfObject = status.getPdfObject();
+
+ PDDocument origDoc = new PDDocument();
+ origDoc.addPage(new PDPage(PDPage.PAGE_SIZE_A4));
+ ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ origDoc.save(baos);
+ baos.close();
+
+ pdfObject.setOriginalDocument(baos.toByteArray());
+
+
+
+ SignatureProfileSettings signatureProfileSettings = TableFactory
+ .createProfile(requestedSignature.getSignatureProfileID(),
+ pdfObject.getStatus().getSettings());
+
+ // create Table describtion
+ Table main = TableFactory.createSigTable(
+ signatureProfileSettings, MAIN, pdfObject.getStatus(),
+ requestedSignature);
+
+ IPDFStamper stamper = StamperFactory
+ .createDefaultStamper(pdfObject.getStatus()
+ .getSettings());
+
+ IPDFVisualObject visualObject = stamper.createVisualPDFObject(
+ pdfObject, main);
+
+ SignatureProfileConfiguration signatureProfileConfiguration = pdfObject
+ .getStatus().getSignatureProfileConfiguration(
+ requestedSignature.getSignatureProfileID());
+
+ String signaturePosString = signatureProfileConfiguration
+ .getDefaultPositioning();
+ PositioningInstruction positioningInstruction = null;
+ if(signaturePosString != null) {
+ positioningInstruction = Positioning.determineTablePositioning(new TablePos(signaturePosString), "", origDoc,
+ visualObject, false);
+ } else {
+ positioningInstruction = Positioning.determineTablePositioning(new TablePos(), "", origDoc,
+ visualObject, false);
+ }
+
+ origDoc.close();
+
+ SignaturePositionImpl position = new SignaturePositionImpl();
+ position.setX(positioningInstruction.getX());
+ position.setY(positioningInstruction.getY());
+ position.setPage(positioningInstruction.getPage());
+ position.setHeight(visualObject.getHeight());
+ position.setWidth(visualObject.getWidth());
+
+ requestedSignature.setSignaturePosition(position);
+
+
+ PDFAsVisualSignatureProperties properties = new PDFAsVisualSignatureProperties(
+ pdfObject.getStatus().getSettings(), pdfObject, (PdfBoxVisualObject) visualObject,
+ positioningInstruction);
+
+ properties.buildSignature();
+ PDDocument visualDoc = PDDocument.load(properties.getVisibleSignature());
+ //PDPageable pageable = new PDPageable(visualDoc);
+ List<PDPage> pages = new ArrayList<PDPage>();
+ visualDoc.getDocumentCatalog().getPages().getAllKids(pages);
+
+ PDPage firstPage = pages.get(0);
+
+ //BufferedImage outputImage = new BufferedImage(
+ // (int)Math.ceil(pageable.getPageFormat(position.getPage()-1).getImageableWidth()),
+ // (int)Math.ceil(pageable.getPageFormat(position.getPage()-1).getImageableHeight()),
+ // BufferedImage.TYPE_4BYTE_ABGR);
+
+ //pageable.print(outputImage.getGraphics(), pageable.getPageFormat(position.getPage()-1), position.getPage()-1);
+
+ float stdRes = 72;
+ float targetRes = resolution;
+ float factor = targetRes / stdRes;
+
+ BufferedImage outputImage = firstPage.convertToImage(BufferedImage.TYPE_4BYTE_ABGR, (int)targetRes);
+
+ BufferedImage cutOut = new BufferedImage((int)(position.getWidth() * factor), (int)(position.getHeight() * factor),
+ BufferedImage.TYPE_4BYTE_ABGR);
+
+ Graphics2D graphics = (Graphics2D) cutOut.getGraphics();
+
+ //float srcy_tmp = (float) ((position.getHeight() + position.getY()) - pageable.getPageFormat(position.getPage()-1).getImageableHeight());
+
+ //int srcy1 = (int)(Math.floor(srcy_tmp));
+ //int srcy2 = (int)(srcy1 + position.getHeight());
+
+ /*logger.debug("Draw Image: SRC {} {} {} {}", 0, 0,cutOut.getWidth(), cutOut.getHeight() );
+ logger.debug("Draw Image: DST {} {} {} {}", (int)position.getX(), srcy1, (int)(position.getX() + position.getWidth()),
+ srcy2 );*/
+ //ImageIO.write(outputImage, "png", new File("/tmp/test.png"));
+ //logger.debug("Sig Position: {} {} {} {}", position.getX(), position.getY(), position.getWidth(), position.getHeight());
+
+ graphics.drawImage(outputImage, 0, 0, cutOut.getWidth(), cutOut.getHeight(),
+ (int)(1 * factor),
+ (int)(outputImage.getHeight() - ((position.getHeight() + 1) * factor)),
+ (int)((1 + position.getWidth()) * factor),
+ (int)(outputImage.getHeight() - ((position.getHeight() + 1) * factor) + (position.getHeight() * factor)),
+ null);
+ return cutOut;
+ } catch(PdfAsException e) {
+ throw e;
+ } catch(Throwable e) {
+ throw new PdfAsException("", e);
+ }
+
+ }
}
diff --git a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/pdfbox/PDFAsVisualSignatureProperties.java b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/pdfbox/PDFAsVisualSignatureProperties.java
index fa740798..1ee3674a 100644
--- a/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/pdfbox/PDFAsVisualSignatureProperties.java
+++ b/pdf-as-lib/src/main/java/at/gv/egiz/pdfas/lib/impl/stamping/pdfbox/PDFAsVisualSignatureProperties.java
@@ -26,6 +26,8 @@ package at.gv.egiz.pdfas.lib.impl.stamping.pdfbox;
import java.io.IOException;
import org.apache.pdfbox.pdmodel.PDDocument;
+import org.apache.pdfbox.pdmodel.PDPage;
+import org.apache.pdfbox.pdmodel.common.PDRectangle;
import org.apache.pdfbox.pdmodel.interactive.digitalsignature.visible.PDVisibleSigProperties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;