/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.xml.security.keys.keyresolver.implementations;
import java.security.PublicKey;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import java.util.Iterator;
import org.apache.xml.security.exceptions.XMLSecurityException;
import org.apache.xml.security.keys.content.x509.XMLX509SubjectName;
import org.apache.xml.security.keys.keyresolver.KeyResolverException;
import org.apache.xml.security.keys.keyresolver.KeyResolverSpi;
import org.apache.xml.security.keys.storage.StorageResolver;
import org.apache.xml.security.utils.Constants;
import org.apache.xml.security.utils.XMLUtils;
import org.w3c.dom.Element;
public class X509SubjectNameResolver extends KeyResolverSpi {
private static org.slf4j.Logger log =
org.slf4j.LoggerFactory.getLogger(X509SubjectNameResolver.class);
/**
* Method engineResolvePublicKey
*
* @param element
* @param baseURI
* @param storage
* @return null if no {@link PublicKey} could be obtained
* @throws KeyResolverException
*/
public PublicKey engineLookupAndResolvePublicKey(
Element element, String baseURI, StorageResolver storage
) throws KeyResolverException {
X509Certificate cert =
this.engineLookupResolveX509Certificate(element, baseURI, storage);
if (cert != null) {
return cert.getPublicKey();
}
return null;
}
/**
* Method engineResolveX509Certificate
* @inheritDoc
* @param element
* @param baseURI
* @param storage
*
* @throws KeyResolverException
*/
public X509Certificate engineLookupResolveX509Certificate(
Element element, String baseURI, StorageResolver storage
) throws KeyResolverException {
if (log.isDebugEnabled()) {
log.debug("Can I resolve " + element.getTagName() + "?");
}
Element[] x509childNodes = null;
XMLX509SubjectName x509childObject[] = null;
if (!XMLUtils.elementIsInSignatureSpace(element, Constants._TAG_X509DATA)) {
if (log.isDebugEnabled()) {
log.debug("I can't");
}
return null;
}
x509childNodes =
XMLUtils.selectDsNodes(element.getFirstChild(), Constants._TAG_X509SUBJECTNAME);
if (!(x509childNodes != null && x509childNodes.length > 0)) {
if (log.isDebugEnabled()) {
log.debug("I can't");
}
return null;
}
try {
if (storage == null) {
Object exArgs[] = { Constants._TAG_X509SUBJECTNAME };
KeyResolverException ex =
new KeyResolverException("KeyResolver.needStorageResolver", exArgs);
if (log.isDebugEnabled()) {
log.debug("", ex);
}
throw ex;
}
x509childObject = new XMLX509SubjectName[x509childNodes.length];
for (int i = 0; i < x509childNodes.length; i++) {
x509childObject[i] = new XMLX509SubjectName(x509childNodes[i], baseURI);
}
Iterator<Certificate> storageIterator = storage.getIterator();
while (storageIterator.hasNext()) {
X509Certificate cert = (X509Certificate)storageIterator.next();
XMLX509SubjectName certSN =
new XMLX509SubjectName(element.getOwnerDocument(), cert);
if (log.isDebugEnabled()) {
log.debug("Found Certificate SN: " + certSN.getSubjectName());
}
for (int i = 0; i < x509childObject.length; i++) {
if (log.isDebugEnabled()) {
log.debug("Found Element SN: "
+ x509childObject[i].getSubjectName());
}
if (certSN.equals(x509childObject[i])) {
if (log.isDebugEnabled()) {
log.debug("match !!! ");
}
return cert;
}
if (log.isDebugEnabled()) {
log.debug("no match...");
}
}
}
return null;
} catch (XMLSecurityException ex) {
if (log.isDebugEnabled()) {
log.debug("XMLSecurityException", ex);
}
throw new KeyResolverException("generic.EmptyMessage", ex);
}
}
/**
* Method engineResolveSecretKey
* @inheritDoc
* @param element
* @param baseURI
* @param storage
*
*/
public javax.crypto.SecretKey engineLookupAndResolveSecretKey(
Element element, String baseURI, StorageResolver storage
) {
return null;
}
}