/**
* 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.cxf.sts.token.provider;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import org.w3c.dom.Element;
import org.apache.cxf.sts.request.ReceivedToken;
import org.apache.cxf.sts.request.TokenRequirements;
import org.apache.cxf.ws.security.sts.provider.STSException;
import org.apache.cxf.ws.security.sts.provider.model.secext.UsernameTokenType;
import org.apache.ws.security.SAMLTokenPrincipal;
import org.apache.ws.security.WSConstants;
import org.apache.ws.security.WSSecurityException;
import org.apache.ws.security.saml.ext.AssertionWrapper;
import org.apache.ws.security.saml.ext.bean.AttributeBean;
import org.apache.ws.security.saml.ext.bean.AttributeStatementBean;
/**
* A default AttributeStatementProvider implementation. It creates a default attribute with
* value "authenticated". It also shows how to handle OnBehalfOf or ActAs elements by adding an
* Attribute for them.
*/
public class DefaultAttributeStatementProvider implements AttributeStatementProvider {
/**
* Get an AttributeStatementBean using the given parameters.
*/
public AttributeStatementBean getStatement(TokenProviderParameters providerParameters) {
AttributeStatementBean attrBean = new AttributeStatementBean();
List<AttributeBean> attributeList = new ArrayList<AttributeBean>();
TokenRequirements tokenRequirements = providerParameters.getTokenRequirements();
String tokenType = tokenRequirements.getTokenType();
AttributeBean attributeBean = createDefaultAttribute(tokenType);
attributeList.add(attributeBean);
ReceivedToken onBehalfOf = tokenRequirements.getOnBehalfOf();
ReceivedToken actAs = tokenRequirements.getActAs();
try {
if (onBehalfOf != null) {
AttributeBean parameterBean =
handleAdditionalParameters(false, onBehalfOf.getToken(), tokenType);
if (!parameterBean.getAttributeValues().isEmpty()) {
attributeList.add(parameterBean);
}
}
if (actAs != null) {
AttributeBean parameterBean =
handleAdditionalParameters(true, actAs.getToken(), tokenType);
if (!parameterBean.getAttributeValues().isEmpty()) {
attributeList.add(parameterBean);
}
}
} catch (WSSecurityException ex) {
throw new STSException(ex.getMessage(), ex);
}
attrBean.setSamlAttributes(attributeList);
return attrBean;
}
/**
* Create a default attribute
*/
private AttributeBean createDefaultAttribute(String tokenType) {
AttributeBean attributeBean = new AttributeBean();
if (WSConstants.WSS_SAML2_TOKEN_TYPE.equals(tokenType)
|| WSConstants.SAML2_NS.equals(tokenType)) {
attributeBean.setQualifiedName("token-requestor");
attributeBean.setNameFormat("http://cxf.apache.org/sts");
} else {
attributeBean.setSimpleName("token-requestor");
attributeBean.setQualifiedName("http://cxf.apache.org/sts");
}
attributeBean.setAttributeValues(Collections.singletonList("authenticated"));
return attributeBean;
}
/**
* Handle ActAs or OnBehalfOf elements.
*/
private AttributeBean handleAdditionalParameters(
boolean actAs,
Object parameter,
String tokenType
) throws WSSecurityException {
AttributeBean parameterBean = new AttributeBean();
String claimType = actAs ? "ActAs" : "OnBehalfOf";
if (WSConstants.WSS_SAML2_TOKEN_TYPE.equals(tokenType) || WSConstants.SAML2_NS.equals(tokenType)) {
parameterBean.setQualifiedName(claimType);
parameterBean.setNameFormat("http://cxf.apache.org/sts");
} else {
parameterBean.setSimpleName(claimType);
parameterBean.setQualifiedName("http://cxf.apache.org/sts");
}
if (parameter instanceof UsernameTokenType) {
parameterBean.setAttributeValues(
Collections.singletonList(((UsernameTokenType)parameter).getUsername().getValue())
);
} else if (parameter instanceof Element) {
AssertionWrapper wrapper = new AssertionWrapper((Element)parameter);
SAMLTokenPrincipal principal = new SAMLTokenPrincipal(wrapper);
parameterBean.setAttributeValues(Collections.singletonList(principal.getName()));
}
return parameterBean;
}
}