/**
* 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.camel.component.xmlsecurity.api;
import java.security.KeyStore;
import java.security.cert.Certificate;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.UUID;
import javax.xml.crypto.KeySelector;
import javax.xml.crypto.dsig.keyinfo.KeyInfo;
import javax.xml.crypto.dsig.keyinfo.KeyInfoFactory;
import javax.xml.crypto.dsig.keyinfo.X509Data;
import org.w3c.dom.Node;
import org.apache.camel.Message;
/**
* Accesses the private key from a key-store and returns a KeyInfo which
* contains the X.509 certificate chain corresponding to the private key.
*/
public class DefaultKeyAccessor extends DefaultKeySelector implements KeyAccessor {
private String provider;
public DefaultKeyAccessor() {
}
public String getProvider() {
return provider;
}
public void setProvider(String provider) {
this.provider = provider;
}
@Override
public KeySelector getKeySelector(Message message) throws Exception {
return this;
}
@Override
public KeyInfo getKeyInfo(Message message, Node messageBody, KeyInfoFactory factory) throws Exception {
return createKeyInfo(factory);
}
private KeyInfo createKeyInfo(KeyInfoFactory kif) throws Exception {
X509Certificate[] chain = getCertificateChain();
if (chain == null) {
return null;
}
X509Data x509D = kif.newX509Data(Arrays.asList(chain));
return kif.newKeyInfo(Collections.singletonList(x509D), "_" + UUID.randomUUID().toString());
}
private X509Certificate[] getCertificateChain() throws Exception {
KeyStore keystore = getKeyStore();
if (keystore == null) {
return null;
}
String alias = getAlias();
if (alias == null) {
return null;
}
Certificate[] certs = keystore.getCertificateChain(alias);
if (certs == null) {
return null;
}
ArrayList<X509Certificate> certList = new ArrayList<X509Certificate>(certs.length);
for (Certificate cert : certs) {
if (cert instanceof X509Certificate) {
certList.add((X509Certificate) cert);
}
}
return certList.toArray(new X509Certificate[certList.size()]);
}
}