/*
* Copyright [2006] [University Corporation for Advanced Internet Development, Inc.]
*
* Licensed 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.opensaml.saml2.metadata.impl;
import org.opensaml.common.impl.AbstractSAMLObjectUnmarshaller;
import org.opensaml.common.xml.SAMLConstants;
import org.opensaml.saml2.metadata.EncryptionMethod;
import org.opensaml.saml2.metadata.KeyDescriptor;
import org.opensaml.xml.XMLObject;
import org.opensaml.xml.io.UnmarshallingException;
import org.opensaml.xml.security.credential.UsageType;
import org.opensaml.xml.signature.KeyInfo;
import org.w3c.dom.Attr;
/**
* A thread-safe unmarshaller for {@link org.opensaml.saml2.metadata.KeyDescriptor}s.
*/
public class KeyDescriptorUnmarshaller extends AbstractSAMLObjectUnmarshaller {
/** Constructor. */
public KeyDescriptorUnmarshaller() {
super(SAMLConstants.SAML20MD_NS, KeyDescriptor.DEFAULT_ELEMENT_LOCAL_NAME);
}
/**
* Constructor.
*
* @param namespaceURI the namespace URI of either the schema type QName or element QName of the elements this
* unmarshaller operates on
* @param elementLocalName the local name of either the schema type QName or element QName of the elements this
* unmarshaller operates on
*/
protected KeyDescriptorUnmarshaller(String namespaceURI, String elementLocalName) {
super(namespaceURI, elementLocalName);
}
/** {@inheritDoc} */
protected void processChildElement(XMLObject parentSAMLObject, XMLObject childSAMLObject)
throws UnmarshallingException {
KeyDescriptor keyDescriptor = (KeyDescriptor) parentSAMLObject;
if (childSAMLObject instanceof KeyInfo) {
keyDescriptor.setKeyInfo((KeyInfo) childSAMLObject);
} else if (childSAMLObject instanceof EncryptionMethod) {
keyDescriptor.getEncryptionMethods().add((EncryptionMethod) childSAMLObject);
} else {
super.processChildElement(parentSAMLObject, childSAMLObject);
}
}
/** {@inheritDoc} */
protected void processAttribute(XMLObject samlObject, Attr attribute) throws UnmarshallingException {
KeyDescriptor keyDescriptor = (KeyDescriptor) samlObject;
if (attribute.getName().equals(KeyDescriptor.USE_ATTRIB_NAME)) {
try {
UsageType usageType = UsageType.valueOf(UsageType.class, attribute.getValue().toUpperCase());
// Only allow the enum values specified in the schema.
if (usageType != UsageType.SIGNING && usageType != UsageType.ENCRYPTION) {
throw new UnmarshallingException("Invalid key usage type: " + attribute.getValue());
}
keyDescriptor.setUse(usageType);
} catch (IllegalArgumentException e) {
throw new UnmarshallingException("Invalid key usage type: " + attribute.getValue());
}
}
super.processAttribute(samlObject, attribute);
}
}