diff options
Diffstat (limited to 'src/main/java/org/pdfbox/examples/signature/ShowSignature.java')
| -rw-r--r-- | src/main/java/org/pdfbox/examples/signature/ShowSignature.java | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/src/main/java/org/pdfbox/examples/signature/ShowSignature.java b/src/main/java/org/pdfbox/examples/signature/ShowSignature.java new file mode 100644 index 0000000..7398534 --- /dev/null +++ b/src/main/java/org/pdfbox/examples/signature/ShowSignature.java @@ -0,0 +1,168 @@ +/**
+ * Copyright (c) 2003, www.pdfbox.org
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of pdfbox; nor the names of its
+ * contributors may be used to endorse or promote products derived from this
+ * software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * http://www.pdfbox.org
+ *
+ */
+package org.pdfbox.examples.signature;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+
+import java.security.cert.CertificateFactory;
+
+import java.util.Collection;
+
+import org.pdfbox.cos.COSArray;
+import org.pdfbox.cos.COSDictionary;
+import org.pdfbox.cos.COSName;
+import org.pdfbox.cos.COSString;
+
+import org.pdfbox.pdmodel.PDDocument;
+
+/**
+ * This will read a document from the filesystem, decrypt it and do something with the signature.
+ *
+ * usage: java org.pdfbox.examples.signature.ShowSignature <password> <inputfile>
+ *
+ *
+ * @author Ben Litchfield (ben@csh.rit.edu)
+ * @version $Revision: 1.8 $
+ */
+public class ShowSignature
+{
+
+ /**
+ * This is the entry point for the application.
+ *
+ * @param args The command-line arguments.
+ *
+ * @throws Exception If there is an error reading the file.
+ */
+ public static void main( String[] args ) throws Exception
+ {
+ ShowSignature show = new ShowSignature();
+ show.showSignature( args );
+ }
+
+ private void showSignature( String[] args ) throws Exception
+ {
+ if( args.length != 2 )
+ {
+ usage();
+ }
+ else
+ {
+ String password = args[0];
+ String infile = args[1];
+ PDDocument document = null;
+ try
+ {
+ document = PDDocument.load( infile );
+
+ if( document.isEncrypted() )
+ {
+ document.decrypt( password );
+ }
+ else
+ {
+ System.err.println( "Warning: Document is not encrypted." );
+ }
+
+ COSDictionary trailer = document.getDocument().getTrailer();
+ COSDictionary root = (COSDictionary)trailer.getDictionaryObject( COSName.ROOT );
+ COSDictionary acroForm = (COSDictionary)root.getDictionaryObject( COSName.getPDFName( "AcroForm" ) );
+ COSArray fields = (COSArray)acroForm.getDictionaryObject( COSName.getPDFName( "Fields" ) );
+ for( int i=0; i<fields.size(); i++ )
+ {
+ COSDictionary field = (COSDictionary)fields.getObject( i );
+ String type = field.getNameAsString( "FT" );
+ if( "Sig".equals( type ) )
+ {
+ COSDictionary cert = (COSDictionary)field.getDictionaryObject( COSName.getPDFName( "V" ) );
+ if( cert != null )
+ {
+ System.out.println( "Certificate found" );
+ System.out.println( "Name=" + cert.getDictionaryObject( COSName.getPDFName( "Name" ) ) );
+ System.out.println( "Modified=" + cert.getDictionaryObject( COSName.getPDFName( "M" ) ) );
+ COSName subFilter = (COSName)cert.getDictionaryObject( COSName.getPDFName( "SubFilter" ) );
+ if( subFilter != null )
+ {
+ if( subFilter.getName().equals( "adbe.x509.rsa_sha1" ) )
+ {
+ COSString certString = (COSString)cert.getDictionaryObject(
+ COSName.getPDFName( "Cert" ) );
+ byte[] certData = certString.getBytes();
+ CertificateFactory factory = CertificateFactory.getInstance( "X.509" );
+ ByteArrayInputStream certStream = new ByteArrayInputStream( certData );
+ Collection certs = factory.generateCertificates( certStream );
+ System.out.println( "certs=" + certs );
+ }
+ else if( subFilter.getName().equals( "adbe.pkcs7.sha1" ) )
+ {
+ COSString certString = (COSString)cert.getDictionaryObject(
+ COSName.getPDFName( "Contents" ) );
+ byte[] certData = certString.getBytes();
+ CertificateFactory factory = CertificateFactory.getInstance( "X.509" );
+ ByteArrayInputStream certStream = new ByteArrayInputStream( certData );
+ Collection certs = factory.generateCertificates( certStream );
+ System.out.println( "certs=" + certs );
+ }
+ else
+ {
+ System.err.println( "Unknown certificate type:" + subFilter );
+ }
+ }
+ else
+ {
+ throw new IOException( "Missing subfilter for cert dictionary" );
+ }
+ }
+ else
+ {
+ System.out.println( "Signature found, but no certificate" );
+ }
+ }
+ }
+ }
+ finally
+ {
+ document.close();
+ }
+ }
+ }
+
+ /**
+ * This will print a usage message.
+ */
+ private static void usage()
+ {
+ System.err.println( "usage: java org.pdfbox.examples.signature.ShowSignature " +
+ "<password> <inputfile>" );
+ }
+
+}
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