/**
* 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.EncryptedParts;
import org.apache.wss4j.policy.model.Header;
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.stax.ext.WSSConstants;
import org.apache.wss4j.stax.ext.WSSUtils;
import org.apache.wss4j.stax.securityEvent.EncryptedPartSecurityEvent;
import org.apache.wss4j.stax.securityEvent.WSSecurityEventConstants;
import javax.xml.namespace.QName;
import java.util.LinkedList;
import java.util.List;
/**
* WSP1.3, 4.2.1 EncryptedParts Assertion
*/
public class EncryptedPartsAssertionState extends AssertionState implements Assertable {
private int attachmentCount;
private int encryptedAttachmentCount;
private boolean encryptedAttachmentRequired;
private PolicyAsserter policyAsserter;
public EncryptedPartsAssertionState(
AbstractSecurityAssertion assertion,
PolicyAsserter policyAsserter,
boolean asserted, int attachmentCount) {
super(assertion, asserted);
this.attachmentCount = attachmentCount;
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.EncryptedPart
};
}
@Override
public boolean assertEvent(SecurityEvent securityEvent) throws WSSPolicyException {
EncryptedPartSecurityEvent encryptedPartSecurityEvent = (EncryptedPartSecurityEvent) securityEvent;
EncryptedParts encryptedParts = (EncryptedParts) getAssertion();
if (encryptedParts.getAttachments() != null) {
encryptedAttachmentRequired = true;
if (encryptedPartSecurityEvent.isAttachment()) {
encryptedAttachmentCount++;
setAsserted(true);
policyAsserter.assertPolicy(getAssertion());
return true;
}
}
//we'll never get events with the exact body path but child elements so we can just check if we are in the body
if (encryptedParts.isBody() && WSSUtils.isInSOAPBody(encryptedPartSecurityEvent.getElementPath())) {
if (encryptedPartSecurityEvent.isEncrypted()) {
setAsserted(true);
policyAsserter.assertPolicy(getAssertion());
return true;
} else {
setAsserted(false);
setErrorMessage("SOAP-Body must be encrypted");
policyAsserter.unassertPolicy(getAssertion(), getErrorMessage());
return false;
}
}
//body processed above. so this must be a header element
for (int i = 0; i < encryptedParts.getHeaders().size(); i++) {
Header header = encryptedParts.getHeaders().get(i);
QName headerQName = new QName(header.getNamespace(), header.getName() == null ? "" : header.getName());
List<QName> header11Path = new LinkedList<QName>();
header11Path.addAll(WSSConstants.SOAP_11_HEADER_PATH);
header11Path.add(headerQName);
if (WSSUtils.pathMatches(header11Path, encryptedPartSecurityEvent.getElementPath(), true, header.getName() == null)) {
if (encryptedPartSecurityEvent.isEncrypted()) {
setAsserted(true);
policyAsserter.assertPolicy(getAssertion());
return true;
} else {
setAsserted(false);
setErrorMessage("Element " + WSSUtils.pathAsString(encryptedPartSecurityEvent.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;
}
@Override
public boolean isAsserted() {
if (encryptedAttachmentRequired && encryptedAttachmentCount < attachmentCount) {
return false;
}
return super.isAsserted();
}
}