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@@ -19,6 +19,7 @@ package com.x.processplatform.assemble.surface.jaxrs.attachment.signature;
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import java.awt.Color;
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import java.awt.geom.AffineTransform;
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import java.awt.geom.Rectangle2D;
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+import java.awt.image.BufferedImage;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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@@ -65,6 +66,8 @@ import org.bouncycastle.asn1.x500.X500Name;
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import org.bouncycastle.asn1.x500.style.BCStyle;
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import org.bouncycastle.asn1.x500.style.IETFUtils;
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+import javax.imageio.ImageIO;
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+
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/**
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* This is a second example for visual signing a pdf. It doesn't use the "design pattern" influenced
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* PDVisibleSignDesigner, and doesn't create its complex multilevel forms described in the Adobe
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@@ -76,42 +79,37 @@ import org.bouncycastle.asn1.x500.style.IETFUtils;
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* @author Vakhtang Koroghlishvili
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* @author Tilman Hausherr
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*/
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-public class CreateVisibleSignature2 extends CreateSignatureBase
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-{
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+public class CreateVisibleSignature2 extends CreateSignatureBase {
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private SignatureOptions signatureOptions;
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- private boolean lateExternalSigning = false;
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- private File imageFile = null;
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+ private boolean lateExternalSigning = false;
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+ private File imageFile = null;
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/**
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* Initialize the signature creator with a keystore (pkcs12) and pin that
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* should be used for the signature.
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*
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* @param keystore is a pkcs12 keystore.
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- * @param pin is the pin for the keystore / private key
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- * @throws KeyStoreException if the keystore has not been initialized (loaded)
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- * @throws NoSuchAlgorithmException if the algorithm for recovering the key cannot be found
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+ * @param pin is the pin for the keystore / private key
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+ * @throws KeyStoreException if the keystore has not been initialized (loaded)
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+ * @throws NoSuchAlgorithmException if the algorithm for recovering the key cannot be found
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* @throws UnrecoverableKeyException if the given password is wrong
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- * @throws CertificateException if the certificate is not valid as signing time
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- * @throws IOException if no certificate could be found
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+ * @throws CertificateException if the certificate is not valid as signing time
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+ * @throws IOException if no certificate could be found
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*/
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public CreateVisibleSignature2(KeyStore keystore, char[] pin)
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- throws KeyStoreException, UnrecoverableKeyException, NoSuchAlgorithmException, IOException, CertificateException
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- {
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+ throws KeyStoreException, UnrecoverableKeyException, NoSuchAlgorithmException, IOException, CertificateException {
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super(keystore, pin);
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}
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- public File getImageFile()
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- {
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+ public File getImageFile() {
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return imageFile;
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}
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- public void setImageFile(File imageFile)
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- {
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+ public void setImageFile(File imageFile) {
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this.imageFile = imageFile;
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}
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- public boolean isLateExternalSigning()
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- {
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+ public boolean isLateExternalSigning() {
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return lateExternalSigning;
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}
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@@ -122,39 +120,35 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
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*
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* @param lateExternalSigning
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*/
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- public void setLateExternalSigning(boolean lateExternalSigning)
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- {
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+ public void setLateExternalSigning(boolean lateExternalSigning) {
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this.lateExternalSigning = lateExternalSigning;
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}
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/**
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* Sign pdf file and create new file that ends with "_signed.pdf".
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*
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- * @param inputFile The source pdf document file.
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+ * @param inputFile The source pdf document file.
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* @param signedFile The file to be signed.
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- * @param humanRect rectangle from a human viewpoint (coordinates start at top left)
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- * @param tsaUrl optional TSA url
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+ * @param humanRect rectangle from a human viewpoint (coordinates start at top left)
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+ * @param tsaUrl optional TSA url
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* @throws IOException
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*/
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- public void signPDF(File inputFile, File signedFile, Rectangle2D humanRect, String tsaUrl) throws IOException
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- {
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+ public void signPDF(File inputFile, File signedFile, Rectangle2D humanRect, String tsaUrl) throws IOException {
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this.signPDF(inputFile, signedFile, humanRect, tsaUrl, null);
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}
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/**
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* Sign pdf file and create new file that ends with "_signed.pdf".
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*
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- * @param inputFile The source pdf document file.
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- * @param signedFile The file to be signed.
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- * @param humanRect rectangle from a human viewpoint (coordinates start at top left)
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- * @param tsaUrl optional TSA url
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+ * @param inputFile The source pdf document file.
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+ * @param signedFile The file to be signed.
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+ * @param humanRect rectangle from a human viewpoint (coordinates start at top left)
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+ * @param tsaUrl optional TSA url
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* @param signatureFieldName optional name of an existing (unsigned) signature field
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* @throws IOException
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*/
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- public void signPDF(File inputFile, File signedFile, Rectangle2D humanRect, String tsaUrl, String signatureFieldName) throws IOException
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- {
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- if (inputFile == null || !inputFile.exists())
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- {
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+ public void signPDF(File inputFile, File signedFile, Rectangle2D humanRect, String tsaUrl, String signatureFieldName) throws IOException {
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+ if (inputFile == null || !inputFile.exists()) {
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throw new IOException("Document for signing does not exist");
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}
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@@ -165,8 +159,7 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
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PDDocument doc = PDDocument.load(inputFile);
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int accessPermissions = SigUtils.getMDPPermission(doc);
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- if (accessPermissions == 1)
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- {
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+ if (accessPermissions == 1) {
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throw new IllegalStateException("No changes to the document are permitted due to DocMDP transform parameters dictionary");
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}
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// Note that PDFBox has a bug that visual signing on certified files with permission 2
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@@ -178,23 +171,19 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
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PDRectangle rect = null;
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// sign a PDF with an existing empty signature, as created by the CreateEmptySignatureForm example.
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- if (acroForm != null)
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- {
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+ if (acroForm != null) {
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signature = findExistingSignature(acroForm, signatureFieldName);
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- if (signature != null)
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- {
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+ if (signature != null) {
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rect = acroForm.getField(signatureFieldName).getWidgets().get(0).getRectangle();
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}
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}
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- if (signature == null)
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- {
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+ if (signature == null) {
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// create signature dictionary
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signature = new PDSignature();
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}
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- if (rect == null)
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- {
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+ if (rect == null) {
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rect = createSignatureRectangle(doc, humanRect);
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}
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@@ -202,26 +191,21 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
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// can be done only if version is at least 1.5 and if not already set
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// doing this on a PDF/A-1b file fails validation by Adobe preflight (PDFBOX-3821)
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// PDF/A-1b requires PDF version 1.4 max, so don't increase the version on such files.
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- if (doc.getVersion() >= 1.5f && accessPermissions == 0)
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- {
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+ if (doc.getVersion() >= 1.5f && accessPermissions == 0) {
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SigUtils.setMDPPermission(doc, signature, 2);
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}
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- if (acroForm != null && acroForm.getNeedAppearances())
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- {
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+ if (acroForm != null && acroForm.getNeedAppearances()) {
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// PDFBOX-3738 NeedAppearances true results in visible signature becoming invisible
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// with Adobe Reader
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- if (acroForm.getFields().isEmpty())
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- {
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+ if (acroForm.getFields().isEmpty()) {
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// we can safely delete it if there are no fields
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acroForm.getCOSObject().removeItem(COSName.NEED_APPEARANCES);
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// note that if you've set MDP permissions, the removal of this item
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// may result in Adobe Reader claiming that the document has been changed.
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// and/or that field content won't be displayed properly.
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// ==> decide what you prefer and adjust your code accordingly.
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- }
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- else
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- {
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+ } else {
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System.out.println("/NeedAppearances is set, signature may be ignored by Adobe Reader");
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}
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}
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@@ -245,11 +229,10 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
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// register signature dictionary and sign interface
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signatureOptions = new SignatureOptions();
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signatureOptions.setVisualSignature(createVisualSignatureTemplate(doc, 0, rect, signature));
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- signatureOptions.setPage(0);
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+ signatureOptions.setPage(doc.getNumberOfPages() - 1);
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doc.addSignature(signature, signatureInterface, signatureOptions);
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- if (isExternalSigning())
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- {
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+ if (isExternalSigning()) {
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ExternalSigningSupport externalSigning = doc.saveIncrementalForExternalSigning(fos);
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// invoke external signature service
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byte[] cmsSignature = sign(externalSigning.getContent());
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@@ -263,8 +246,7 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
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// then open the file with PDFBox, find the field with findExistingSignature() or
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// PDDocument.getLastSignatureDictionary() and get the ByteRange from there.
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// Close the file and then write the signature as explained earlier in this comment.
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- if (isLateExternalSigning())
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- {
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+ if (isLateExternalSigning()) {
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// this saves the file with a 0 signature
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externalSigning.setSignature(new byte[0]);
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@@ -276,20 +258,16 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
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raf.seek(offset);
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raf.write(Hex.getBytes(cmsSignature));
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raf.close();
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- }
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- else
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- {
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+ } else {
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// set signature bytes received from the service and save the file
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externalSigning.setSignature(cmsSignature);
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}
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- }
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- else
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- {
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+ } else {
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// write incremental (only for signing purpose)
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doc.saveIncremental(fos);
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}
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doc.close();
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-
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+
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// Do not close signatureOptions before saving, because some COSStream objects within
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// are transferred to the signed document.
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// Do not allow signatureOptions get out of scope before saving, because then the COSDocument
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@@ -298,8 +276,7 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
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IOUtils.closeQuietly(signatureOptions);
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}
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- private PDRectangle createSignatureRectangle(PDDocument doc, Rectangle2D humanRect)
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- {
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+ private PDRectangle createSignatureRectangle(PDDocument doc, Rectangle2D humanRect) {
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float x = (float) humanRect.getX();
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float y = (float) humanRect.getY();
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float width = (float) humanRect.getWidth();
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@@ -308,8 +285,7 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
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PDRectangle pageRect = page.getCropBox();
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PDRectangle rect = new PDRectangle();
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// signing should be at the same position regardless of page rotation.
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- switch (page.getRotation())
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- {
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+ switch (page.getRotation()) {
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case 90:
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rect.setLowerLeftY(x);
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rect.setUpperRightY(x + width);
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@@ -341,8 +317,7 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
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// create a template PDF document with empty signature and return it as a stream.
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private InputStream createVisualSignatureTemplate(PDDocument srcDoc, int pageNum,
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- PDRectangle rect, PDSignature signature) throws IOException
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- {
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+ PDRectangle rect, PDSignature signature) throws IOException {
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PDDocument doc = new PDDocument();
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PDPage page = new PDPage(srcDoc.getPage(pageNum).getMediaBox());
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@@ -368,11 +343,11 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
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PDRectangle bbox = new PDRectangle(rect.getWidth(), rect.getHeight());
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float height = bbox.getHeight();
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Matrix initialScale = null;
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- switch (srcDoc.getPage(pageNum).getRotation())
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- {
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+ switch (srcDoc.getPage(pageNum).getRotation()) {
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case 90:
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form.setMatrix(AffineTransform.getQuadrantRotateInstance(1));
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- initialScale = Matrix.getScaleInstance(bbox.getWidth() / bbox.getHeight(), bbox.getHeight() / bbox.getWidth());
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+ initialScale = Matrix
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+ .getScaleInstance(bbox.getWidth() / bbox.getHeight(), bbox.getHeight() / bbox.getWidth());
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height = bbox.getWidth();
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break;
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case 180:
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@@ -380,7 +355,8 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
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break;
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case 270:
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form.setMatrix(AffineTransform.getQuadrantRotateInstance(3));
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- initialScale = Matrix.getScaleInstance(bbox.getWidth() / bbox.getHeight(), bbox.getHeight() / bbox.getWidth());
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+ initialScale = Matrix
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+ .getScaleInstance(bbox.getWidth() / bbox.getHeight(), bbox.getHeight() / bbox.getWidth());
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height = bbox.getWidth();
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break;
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case 0:
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@@ -402,55 +378,53 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
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// for 90° and 270° scale ratio of width / height
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// not really sure about this
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// why does scale have no effect when done in the form matrix???
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- if (initialScale != null)
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- {
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+ if (initialScale != null) {
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cs.transform(initialScale);
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}
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// show background (just for debugging, to see the rect size + position)
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- cs.setNonStrokingColor(Color.yellow);
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cs.addRect(-5000, -5000, 10000, 10000);
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- cs.fill();
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- if (imageFile != null)
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- {
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+ if (imageFile != null) {
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// show background image
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// save and restore graphics if the image is too large and needs to be scaled
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cs.saveGraphicsState();
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- cs.transform(Matrix.getScaleInstance(0.25f, 0.25f));
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+ BufferedImage image = ImageIO.read(imageFile);
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+ cs.transform(Matrix.getScaleInstance(rect.getWidth() / (float) image.getWidth(),
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+ rect.getHeight() / (float) image.getHeight()));
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PDImageXObject img = PDImageXObject.createFromFileByExtension(imageFile, doc);
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cs.drawImage(img, 0, 0);
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cs.restoreGraphicsState();
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}
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// show text
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- float fontSize = 10;
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- float leading = fontSize * 1.5f;
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- cs.beginText();
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- cs.setFont(font, fontSize);
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- cs.setNonStrokingColor(Color.black);
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- cs.newLineAtOffset(fontSize, height - leading);
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- cs.setLeading(leading);
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-
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- X509Certificate cert = (X509Certificate) getCertificateChain()[0];
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-
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- // https://stackoverflow.com/questions/2914521/
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- X500Name x500Name = new X500Name(cert.getSubjectX500Principal().getName());
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- RDN cn = x500Name.getRDNs(BCStyle.CN)[0];
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- String name = IETFUtils.valueToString(cn.getFirst().getValue());
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-
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- // See https://stackoverflow.com/questions/12575990
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- // for better date formatting
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- String date = signature.getSignDate().getTime().toString();
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- String reason = signature.getReason();
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-
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+// float fontSize = 10;
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+// float leading = fontSize * 1.5f;
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+// cs.beginText();
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+// cs.setFont(font, fontSize);
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+// cs.setNonStrokingColor(Color.black);
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+// cs.newLineAtOffset(fontSize, height - leading);
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+// cs.setLeading(leading);
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+//
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+// X509Certificate cert = (X509Certificate) getCertificateChain()[0];
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+//
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+// // https://stackoverflow.com/questions/2914521/
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+// X500Name x500Name = new X500Name(cert.getSubjectX500Principal().getName());
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+// RDN cn = x500Name.getRDNs(BCStyle.CN)[0];
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+// String name = IETFUtils.valueToString(cn.getFirst().getValue());
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+//
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+// // See https://stackoverflow.com/questions/12575990
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+// // for better date formatting
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+// String date = signature.getSignDate().getTime().toString();
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+// String reason = signature.getReason();
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+//
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// cs.showText("Signer: " + name);
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// cs.newLine();
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// cs.showText(date);
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// cs.newLine();
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// cs.showText("Reason: " + reason);
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-
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- cs.endText();
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+//
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+// cs.endText();
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cs.close();
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@@ -462,27 +436,21 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
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}
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// Find an existing signature (assumed to be empty). You will usually not need this.
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- private PDSignature findExistingSignature(PDAcroForm acroForm, String sigFieldName)
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- {
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+ private PDSignature findExistingSignature(PDAcroForm acroForm, String sigFieldName) {
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PDSignature signature = null;
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PDSignatureField signatureField;
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- if (acroForm != null)
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- {
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+ if (acroForm != null) {
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signatureField = (PDSignatureField) acroForm.getField(sigFieldName);
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- if (signatureField != null)
|
|
|
- {
|
|
|
+ if (signatureField != null) {
|
|
|
// retrieve signature dictionary
|
|
|
signature = signatureField.getSignature();
|
|
|
- if (signature == null)
|
|
|
- {
|
|
|
+ if (signature == null) {
|
|
|
signature = new PDSignature();
|
|
|
// after solving PDFBOX-3524
|
|
|
// signatureField.setValue(signature)
|
|
|
// until then:
|
|
|
signatureField.getCOSObject().setItem(COSName.V, signature);
|
|
|
- }
|
|
|
- else
|
|
|
- {
|
|
|
+ } else {
|
|
|
throw new IllegalStateException("The signature field " + sigFieldName + " is already signed.");
|
|
|
}
|
|
|
}
|
|
|
@@ -505,10 +473,8 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
|
|
|
* @throws java.security.UnrecoverableKeyException
|
|
|
*/
|
|
|
public static void main(String[] args) throws KeyStoreException, CertificateException,
|
|
|
- IOException, NoSuchAlgorithmException, UnrecoverableKeyException
|
|
|
- {
|
|
|
- if (args.length < 3)
|
|
|
- {
|
|
|
+ IOException, NoSuchAlgorithmException, UnrecoverableKeyException {
|
|
|
+ if (args.length < 3) {
|
|
|
usage();
|
|
|
System.exit(1);
|
|
|
}
|
|
|
@@ -517,20 +483,16 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
|
|
|
// External signing is needed if you are using an external signing service, e.g. to sign
|
|
|
// several files at once.
|
|
|
boolean externalSig = false;
|
|
|
- for (int i = 0; i < args.length; i++)
|
|
|
- {
|
|
|
- if (args[i].equals("-tsa"))
|
|
|
- {
|
|
|
+ for (int i = 0; i < args.length; i++) {
|
|
|
+ if (args[i].equals("-tsa")) {
|
|
|
i++;
|
|
|
- if (i >= args.length)
|
|
|
- {
|
|
|
+ if (i >= args.length) {
|
|
|
usage();
|
|
|
System.exit(1);
|
|
|
}
|
|
|
tsaUrl = args[i];
|
|
|
}
|
|
|
- if (args[i].equals("-e"))
|
|
|
- {
|
|
|
+ if (args[i].equals("-e")) {
|
|
|
externalSig = true;
|
|
|
}
|
|
|
}
|
|
|
@@ -544,8 +506,7 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
|
|
|
|
|
|
CreateVisibleSignature2 signing = new CreateVisibleSignature2(keystore, pin.clone());
|
|
|
|
|
|
- if (args.length >= 4 && !"-tsa".equals(args[3]))
|
|
|
- {
|
|
|
+ if (args.length >= 4 && !"-tsa".equals(args[3])) {
|
|
|
signing.setImageFile(new File(args[3]));
|
|
|
}
|
|
|
|
|
|
@@ -569,13 +530,12 @@ public class CreateVisibleSignature2 extends CreateSignatureBase
|
|
|
/**
|
|
|
* This will print the usage for this program.
|
|
|
*/
|
|
|
- private static void usage()
|
|
|
- {
|
|
|
+ private static void usage() {
|
|
|
System.err.println("Usage: java " + CreateVisibleSignature2.class.getName()
|
|
|
+ " <pkcs12-keystore-file> <pin> <input-pdf> <sign-image>\n" + "" +
|
|
|
- "options:\n" +
|
|
|
- " -tsa <url> sign timestamp using the given TSA server\n"+
|
|
|
- " -e sign using external signature creation scenario");
|
|
|
+ "options:\n" +
|
|
|
+ " -tsa <url> sign timestamp using the given TSA server\n" +
|
|
|
+ " -e sign using external signature creation scenario");
|
|
|
|
|
|
// generate pkcs12-keystore-file with
|
|
|
// keytool -storepass 123456 -storetype PKCS12 -keystore file.p12 -genkey -alias client -keyalg RSA
|
