Author: tilman
Date: Mon Apr 8 19:27:13 2019
New Revision: 1857134
URL: http://svn.apache.org/viewvc?rev=1857134&view=rev
Log:
PDFBOX-45: add test for incremental save after signing
Modified:
pdfbox/trunk/examples/src/test/java/org/apache/pdfbox/examples/pdmodel/TestCreateSignature.java
Modified:
pdfbox/trunk/examples/src/test/java/org/apache/pdfbox/examples/pdmodel/TestCreateSignature.java
URL:
http://svn.apache.org/viewvc/pdfbox/trunk/examples/src/test/java/org/apache/pdfbox/examples/pdmodel/TestCreateSignature.java?rev=1857134&r1=1857133&r2=1857134&view=diff
==============================================================================
---
pdfbox/trunk/examples/src/test/java/org/apache/pdfbox/examples/pdmodel/TestCreateSignature.java
(original)
+++
pdfbox/trunk/examples/src/test/java/org/apache/pdfbox/examples/pdmodel/TestCreateSignature.java
Mon Apr 8 19:27:13 2019
@@ -16,9 +16,12 @@
*/
package org.apache.pdfbox.examples.pdmodel;
+import java.awt.image.BufferedImage;
+import java.awt.image.DataBufferInt;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
+import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.security.GeneralSecurityException;
@@ -35,8 +38,10 @@ import java.util.Arrays;
import java.util.Collection;
import java.util.List;
+import org.apache.pdfbox.cos.COSDictionary;
import org.apache.pdfbox.cos.COSName;
import org.apache.pdfbox.cos.COSString;
+import org.apache.pdfbox.examples.interactive.form.CreateSimpleForm;
import org.apache.pdfbox.examples.signature.CreateEmptySignatureForm;
import org.apache.pdfbox.examples.signature.CreateSignature;
import org.apache.pdfbox.examples.signature.CreateVisibleSignature;
@@ -45,6 +50,8 @@ import org.apache.pdfbox.pdmodel.PDDocum
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDPageContentStream;
import org.apache.pdfbox.pdmodel.interactive.digitalsignature.PDSignature;
+import org.apache.pdfbox.pdmodel.interactive.form.PDField;
+import org.apache.pdfbox.rendering.PDFRenderer;
import org.apache.pdfbox.util.Hex;
import org.apache.wink.client.MockHttpServer;
import org.bouncycastle.cert.X509CertificateHolder;
@@ -391,4 +398,76 @@ public class TestCreateSignature
signature.setByteRange(reserveByteRange);
Assert.assertEquals(digestString,
calculateDigestString(document.saveIncrementalForExternalSigning(new
ByteArrayOutputStream()).getContent()));
}
+
+ /**
+ * Create a simple form PDF, sign it, reload it, change a field value,
incrementally save it.
+ * This should not break the signature, and the value and its display must
have changed as
+ * expected. Do this both for the old and new incremental save methods.
+ *
+ * @throws Exception
+ */
+ @Test
+ public void testSaveIncrementalAfterSign() throws Exception
+ {
+ BufferedImage oldImage, expectedImage1, actualImage1, expectedImage2,
actualImage2;
+
+ CreateSimpleForm.main(new String[0]); // creates
"target/SimpleForm.pdf"
+
+ // load the keystore
+ KeyStore keystore = KeyStore.getInstance("PKCS12");
+ keystore.load(new FileInputStream(keystorePath),
password.toCharArray());
+
+ // sign PDF
+ CreateSignature signing = new CreateSignature(keystore,
password.toCharArray());
+ signing.setExternalSigning(externallySign);
+
+ final String fileNameSigned =
getOutputFileName("SimpleForm_signed{0}.pdf");
+ final String fileNameResaved1 =
getOutputFileName("SimpleForm_signed{0}_incrementallyresaved1.pdf");
+ final String fileNameResaved2 =
getOutputFileName("SimpleForm_signed{0}_incrementallyresaved2.pdf");
+ signing.signDetached(new File("target/SimpleForm.pdf"), new
File(outDir + fileNameSigned));
+
+ checkSignature(new File("target/SimpleForm.pdf"), new File(outDir,
fileNameSigned));
+
+ try (PDDocument doc = PDDocument.load(new File(outDir,
fileNameSigned)))
+ {
+ oldImage = new PDFRenderer(doc).renderImage(0);
+
+ FileOutputStream fileOutputStream = new FileOutputStream(new
File(outDir, fileNameResaved1));
+ PDField field =
doc.getDocumentCatalog().getAcroForm().getField("SampleField");
+ field.setValue("New Value 1");
+
+ expectedImage1 = new PDFRenderer(doc).renderImage(0);
+
+ // compare images, image must has changed
+ Assert.assertEquals(oldImage.getWidth(),
expectedImage1.getWidth());
+ Assert.assertEquals(oldImage.getHeight(),
expectedImage1.getHeight());
+ Assert.assertEquals(oldImage.getType(), expectedImage1.getType());
+ DataBufferInt expectedData = (DataBufferInt)
oldImage.getRaster().getDataBuffer();
+ DataBufferInt actualData = (DataBufferInt)
expectedImage1.getRaster().getDataBuffer();
+ Assert.assertEquals(expectedData.getData().length,
actualData.getData().length);
+ Assert.assertFalse(Arrays.equals(expectedData.getData(),
actualData.getData()));
+
+ // old style incremental save: create a "path" from the root to
the objects that need an update
+ doc.getDocumentCatalog().getCOSObject().setNeedToBeUpdated(true);
+
doc.getDocumentCatalog().getAcroForm().getCOSObject().setNeedToBeUpdated(true);
+ field.getCOSObject().setNeedToBeUpdated(true);
+
field.getWidgets().get(0).getAppearance().getCOSObject().setNeedToBeUpdated(true);
+ ((COSDictionary)
field.getWidgets().get(0).getAppearance().getNormalAppearance().getCOSObject()).setNeedToBeUpdated(true);
+ doc.saveIncremental(fileOutputStream);
+ }
+ checkSignature(new File("target/SimpleForm.pdf"), new File(outDir,
fileNameResaved1));
+ try (PDDocument doc = PDDocument.load(new File(outDir,
fileNameResaved1)))
+ {
+ PDField field =
doc.getDocumentCatalog().getAcroForm().getField("SampleField");
+ Assert.assertEquals("New Value 1", field.getValueAsString());
+ actualImage1 = new PDFRenderer(doc).renderImage(0);
+ // compare images, equality proves that the appearance has been
updated too
+ Assert.assertEquals(expectedImage1.getWidth(),
actualImage1.getWidth());
+ Assert.assertEquals(expectedImage1.getHeight(),
actualImage1.getHeight());
+ Assert.assertEquals(expectedImage1.getType(),
actualImage1.getType());
+ DataBufferInt expectedData = (DataBufferInt)
expectedImage1.getRaster().getDataBuffer();
+ DataBufferInt actualData = (DataBufferInt)
actualImage1.getRaster().getDataBuffer();
+ Assert.assertArrayEquals(expectedData.getData(),
actualData.getData());
+ }
+ }
}
