/*
* Copyright (c) 2001-2007 Sun Microsystems, Inc. All rights reserved.
*
* The Sun Project JXTA(TM) Software License
*
* 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. The end-user documentation included with the redistribution, if any, must
* include the following acknowledgment: "This product includes software
* developed by Sun Microsystems, Inc. for JXTA(TM) technology."
* Alternately, this acknowledgment may appear in the software itself, if
* and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Sun", "Sun Microsystems, Inc.", "JXTA" and "Project JXTA" must
* not be used to endorse or promote products derived from this software
* without prior written permission. For written permission, please contact
* Project JXTA at http://www.jxta.org.
*
* 5. Products derived from this software may not be called "JXTA", nor may
* "JXTA" appear in their name, without prior written permission of Sun.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 SUN
* MICROSYSTEMS OR ITS 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.
*
* JXTA is a registered trademark of Sun Microsystems, Inc. in the United
* States and other countries.
*
* Please see the license information page at :
* <http://www.jxta.org/project/www/license.html> for instructions on use of
* the license in source files.
*
* ====================================================================
*
* This software consists of voluntary contributions made by many individuals
* on behalf of Project JXTA. For more information on Project JXTA, please see
* http://www.jxta.org.
*
* This license is based on the BSD license adopted by the Apache Foundation.
*/
package net.jxta.document;
import net.jxta.impl.util.BASE64InputStream;
import net.jxta.impl.util.BASE64OutputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.Reader;
import java.io.StringReader;
import java.io.StringWriter;
import java.lang.reflect.UndeclaredThrowableException;
import java.util.Enumeration;
/**
* The XMLSignature element for signed advertisements
*/
public class XMLSignature {
private byte[] digest = null;
private byte[] signature = null;
/**
* The XMLSignature element for an outgoing adv
* @param digest
* @param signature
*/
public XMLSignature(byte[] digest, byte[] signature) {
this.digest = digest;
this.signature = signature;
}
/**
* The XMLSignature element for an incoming adv
* @param raw
*/
public XMLSignature(Element raw) {
XMLElement elem = (XMLElement) raw;
if ("XMLSignature".equals(elem.getName())) {
Enumeration eachChild = elem.getChildren();
while (eachChild.hasMoreElements()) {
XMLElement aChild = (XMLElement) eachChild.nextElement();
if ("digest".equals(aChild.getName())) {
try {
Reader digestB64 = new StringReader(aChild.getValue());
InputStream bis = new BASE64InputStream(digestB64);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
do {
int c = bis.read();
if (-1 == c) {
break;
}
bos.write(c);
} while (true);
digest = bos.toByteArray();
bis.close();
bos.close();
} catch (IOException failed) {
IllegalArgumentException failure = new IllegalArgumentException("Could not process Key element");
throw failure;
}
} else if ("signature".equals(aChild.getName())) {
try {
Reader signatureB64 = new StringReader(aChild.getValue());
InputStream bis = new BASE64InputStream(signatureB64);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
do {
int c = bis.read();
if (-1 == c) {
break;
}
bos.write(c);
} while (true);
signature = bos.toByteArray();
bis.close();
bos.close();
} catch (IOException failed) {
IllegalArgumentException failure = new IllegalArgumentException("Could not process Key element");
throw failure;
}
}
}
}
}
/**
* Get the Key Element in order to attach it to an outgoing advertisement
*/
public XMLDocument getXMLSignatureDocument() {
StringBuilder docBuilder = new StringBuilder();
docBuilder.append("<XMLSignatureDocument><XMLSignature>");
try {
StringWriter digestB64 = new StringWriter();
StringWriter signatureB64 = new StringWriter();
OutputStream digestOut = new BASE64OutputStream(digestB64);
OutputStream signatureOut = new BASE64OutputStream(signatureB64);
digestOut.write(digest);
digestOut.close();
signatureOut.write(signature);
signatureOut.close();
docBuilder.append("<digest>");
docBuilder.append(digestB64.toString());
docBuilder.append("</digest>");
docBuilder.append("<signature>");
docBuilder.append(signatureB64.toString());
docBuilder.append("</signature>");
} catch (Exception failed) {
if (failed instanceof RuntimeException) {
throw (RuntimeException) failed;
} else {
throw new UndeclaredThrowableException(failed, "Failure building element");
}
}
docBuilder.append("</XMLSignature></XMLSignatureDocument>");
try {
XMLDocument xmlSignatureDocument = (XMLDocument)StructuredDocumentFactory.newStructuredDocument(
MimeMediaType.XMLUTF8,
new StringReader(docBuilder.toString()));
return xmlSignatureDocument;
} catch (Exception failed) {
if (failed instanceof RuntimeException) {
throw (RuntimeException) failed;
} else {
throw new UndeclaredThrowableException(failed, "Failure building element");
}
}
}
/**
* Get the digest
* @return digest
*/
public byte[] getDigest() {
return digest;
}
/**
* Get the signature
* @return signature
*/
public byte[] getSignature() {
return signature;
}
}