/**
* 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.ws.security.wss4j.policyvalidators;
import java.util.Collection;
import java.util.List;
import javax.xml.namespace.QName;
import org.apache.cxf.ws.policy.AssertionInfo;
import org.apache.cxf.ws.policy.AssertionInfoMap;
import org.apache.cxf.ws.security.policy.PolicyUtils;
import org.apache.wss4j.dom.WSConstants;
import org.apache.wss4j.dom.engine.WSSecurityEngineResult;
import org.apache.wss4j.policy.SP11Constants;
import org.apache.wss4j.policy.SP12Constants;
import org.apache.wss4j.policy.model.AbstractToken;
import org.apache.wss4j.policy.model.AbstractToken.DerivedKeys;
import org.apache.wss4j.policy.model.AbstractTokenWrapper;
import org.apache.wss4j.policy.model.SymmetricBinding;
/**
* Validate a SymmetricBinding policy.
*/
public class SymmetricBindingPolicyValidator extends AbstractBindingPolicyValidator {
/**
* Return true if this SecurityPolicyValidator implementation is capable of validating a
* policy defined by the AssertionInfo parameter
*/
public boolean canValidatePolicy(AssertionInfo assertionInfo) {
return assertionInfo.getAssertion() != null
&& (SP12Constants.SYMMETRIC_BINDING.equals(assertionInfo.getAssertion().getName())
|| SP11Constants.SYMMETRIC_BINDING.equals(assertionInfo.getAssertion().getName()));
}
/**
* Validate policies.
*/
public void validatePolicies(PolicyValidatorParameters parameters, Collection<AssertionInfo> ais) {
boolean hasDerivedKeys =
parameters.getResults().getActionResults().containsKey(WSConstants.DKT);
for (AssertionInfo ai : ais) {
SymmetricBinding binding = (SymmetricBinding)ai.getAssertion();
ai.setAsserted(true);
// Check the protection order
if (!checkProtectionOrder(binding, parameters.getAssertionInfoMap(), ai,
parameters.getResults().getResults())) {
continue;
}
// Check various properties of the binding
if (!checkProperties(binding, ai, parameters.getAssertionInfoMap(), parameters.getResults(),
parameters.getSignedResults(), parameters.getMessage())) {
continue;
}
// Check various tokens of the binding
if (!checkTokens(binding, ai, parameters.getAssertionInfoMap(), hasDerivedKeys,
parameters.getSignedResults(), parameters.getEncryptedResults())) {
continue;
}
}
}
/**
* Check various tokens of the binding
*/
private boolean checkTokens(
SymmetricBinding binding,
AssertionInfo ai,
AssertionInfoMap aim,
boolean hasDerivedKeys,
List<WSSecurityEngineResult> signedResults,
List<WSSecurityEngineResult> encryptedResults
) {
if (binding.getEncryptionToken() != null) {
PolicyUtils.assertPolicy(aim, binding.getEncryptionToken().getName());
if (!checkDerivedKeys(
binding.getEncryptionToken(), hasDerivedKeys, signedResults, encryptedResults
)) {
ai.setNotAsserted("Message fails the DerivedKeys requirement");
return false;
}
assertToken(binding.getEncryptionToken(), aim);
}
if (binding.getSignatureToken() != null) {
PolicyUtils.assertPolicy(aim, binding.getSignatureToken().getName());
if (!checkDerivedKeys(
binding.getSignatureToken(), hasDerivedKeys, signedResults, encryptedResults
)) {
ai.setNotAsserted("Message fails the DerivedKeys requirement");
return false;
}
assertToken(binding.getSignatureToken(), aim);
}
if (binding.getProtectionToken() != null) {
PolicyUtils.assertPolicy(aim, binding.getProtectionToken().getName());
if (!checkDerivedKeys(
binding.getProtectionToken(), hasDerivedKeys, signedResults, encryptedResults
)) {
ai.setNotAsserted("Message fails the DerivedKeys requirement");
return false;
}
assertToken(binding.getProtectionToken(), aim);
}
return true;
}
private void assertToken(AbstractTokenWrapper tokenWrapper, AssertionInfoMap aim) {
String namespace = tokenWrapper.getName().getNamespaceURI();
AbstractToken token = tokenWrapper.getToken();
DerivedKeys derivedKeys = token.getDerivedKeys();
if (derivedKeys != null) {
PolicyUtils.assertPolicy(aim, new QName(namespace, derivedKeys.name()));
}
}
}