/**
* 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.wss4j.policy.stax.assertionStates;
import org.apache.wss4j.policy.AssertionState;
import org.apache.wss4j.common.WSSPolicyException;
import org.apache.wss4j.policy.model.AbstractSecurityAssertion;
import org.apache.wss4j.policy.model.EncryptedElements;
import org.apache.wss4j.policy.model.XPath;
import org.apache.xml.security.stax.securityEvent.AbstractSecuredElementSecurityEvent;
import org.apache.xml.security.stax.securityEvent.SecurityEvent;
import org.apache.xml.security.stax.securityEvent.SecurityEventConstants;
import org.apache.wss4j.policy.stax.Assertable;
import org.apache.wss4j.policy.stax.DummyPolicyAsserter;
import org.apache.wss4j.policy.stax.PolicyAsserter;
import org.apache.wss4j.policy.stax.PolicyUtils;
import org.apache.wss4j.stax.ext.WSSUtils;
import org.apache.wss4j.stax.securityEvent.WSSecurityEventConstants;
import javax.xml.namespace.QName;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
* WSP1.3, 4.2.2 EncryptedElements Assertion
*/
public class EncryptedElementsAssertionState extends AssertionState implements Assertable {
private final List<List<QName>> pathElements = new ArrayList<List<QName>>();
private PolicyAsserter policyAsserter;
public EncryptedElementsAssertionState(AbstractSecurityAssertion assertion,
PolicyAsserter policyAsserter,
boolean asserted) {
super(assertion, asserted);
EncryptedElements encryptedElements = (EncryptedElements) assertion;
for (int i = 0; i < encryptedElements.getXPaths().size(); i++) {
XPath xPath = encryptedElements.getXPaths().get(i);
List<QName> elements = PolicyUtils.getElementPath(xPath);
pathElements.add(elements);
}
this.policyAsserter = policyAsserter;
if (this.policyAsserter == null) {
this.policyAsserter = new DummyPolicyAsserter();
}
if (asserted) {
policyAsserter.assertPolicy(getAssertion());
}
}
@Override
public SecurityEventConstants.Event[] getSecurityEventType() {
return new SecurityEventConstants.Event[]{
WSSecurityEventConstants.EncryptedElement,
WSSecurityEventConstants.EncryptedPart
};
}
@Override
public boolean assertEvent(SecurityEvent securityEvent) throws WSSPolicyException {
AbstractSecuredElementSecurityEvent encryptedElementSecurityEvent =
(AbstractSecuredElementSecurityEvent) securityEvent;
Iterator<List<QName>> pathElementIterator = pathElements.iterator();
while (pathElementIterator.hasNext()) {
List<QName> pathElements = pathElementIterator.next();
if (WSSUtils.pathMatches(pathElements, encryptedElementSecurityEvent.getElementPath(), true, false)) {
if (encryptedElementSecurityEvent.isEncrypted()) {
setAsserted(true);
policyAsserter.assertPolicy(getAssertion());
return true;
} else {
//an element must be encrypted but isn't
setAsserted(false);
setErrorMessage("Element " + WSSUtils.pathAsString(encryptedElementSecurityEvent.getElementPath()) + " must be encrypted");
policyAsserter.unassertPolicy(getAssertion(), getErrorMessage());
return false;
}
}
}
//if we return false here other encrypted elements will trigger a PolicyViolationException
policyAsserter.assertPolicy(getAssertion());
return true;
}
}