/**
* 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.stax.config;
import org.apache.xml.security.exceptions.XMLSecurityException;
import org.apache.xml.security.stax.ext.XMLSecurityConstants;
import org.apache.xml.security.utils.ClassLoaderUtils;
import org.apache.xml.security.configuration.TransformAlgorithmType;
import org.apache.xml.security.configuration.TransformAlgorithmsType;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Mapping between JCE id and xmlsec uri's for algorithms
*
* @author $Author: coheigea $
* @version $Revision: 1584089 $ $Date: 2014-04-02 17:46:35 +0100 (Wed, 02 Apr 2014) $
*/
public class TransformerAlgorithmMapper {
private static Map<String, Class<?>> algorithmsClassMapInOut;
private static Map<String, Class<?>> algorithmsClassMapIn;
private static Map<String, Class<?>> algorithmsClassMapOut;
private TransformerAlgorithmMapper() {
}
protected static synchronized void init(TransformAlgorithmsType transformAlgorithms,
Class<?> callingClass) throws Exception {
List<TransformAlgorithmType> algorithms = transformAlgorithms.getTransformAlgorithm();
algorithmsClassMapInOut = new HashMap<String, Class<?>>();
algorithmsClassMapIn = new HashMap<String, Class<?>>();
algorithmsClassMapOut = new HashMap<String, Class<?>>();
for (int i = 0; i < algorithms.size(); i++) {
TransformAlgorithmType algorithmType = algorithms.get(i);
if (algorithmType.getINOUT() == null) {
algorithmsClassMapInOut.put(algorithmType.getURI(),
ClassLoaderUtils.loadClass(algorithmType.getJAVACLASS(), callingClass));
} else if ("IN".equals(algorithmType.getINOUT().value())) {
algorithmsClassMapIn.put(algorithmType.getURI(),
ClassLoaderUtils.loadClass(algorithmType.getJAVACLASS(), callingClass));
} else if ("OUT".equals(algorithmType.getINOUT().value())) {
algorithmsClassMapOut.put(algorithmType.getURI(),
ClassLoaderUtils.loadClass(algorithmType.getJAVACLASS(), callingClass));
} else {
throw new IllegalArgumentException("INOUT parameter " + algorithmType.getINOUT().value() + " unsupported");
}
}
}
public static Class<?> getTransformerClass(String algoURI, XMLSecurityConstants.DIRECTION direction) throws XMLSecurityException {
Class<?> clazz = null;
switch (direction) {
case IN:
clazz = algorithmsClassMapIn.get(algoURI);
break;
case OUT:
clazz = algorithmsClassMapOut.get(algoURI);
break;
}
if (clazz == null) {
clazz = algorithmsClassMapInOut.get(algoURI);
}
if (clazz == null) {
throw new XMLSecurityException("signature.Transform.UnknownTransform", algoURI);
}
return clazz;
}
}