/**
* 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.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import java.util.Map;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathFactory;
import org.w3c.dom.Element;
import org.apache.cxf.helpers.MapNamespaceContext;
import org.apache.cxf.ws.policy.AssertionInfo;
import org.apache.cxf.ws.security.wss4j.CryptoCoverageUtil;
import org.apache.cxf.ws.security.wss4j.CryptoCoverageUtil.CoverageScope;
import org.apache.cxf.ws.security.wss4j.CryptoCoverageUtil.CoverageType;
import org.apache.wss4j.common.ext.WSSecurityException;
import org.apache.wss4j.dom.WSDataRef;
import org.apache.wss4j.policy.SP11Constants;
import org.apache.wss4j.policy.SP12Constants;
import org.apache.wss4j.policy.model.RequiredElements;
/**
* Validate either a SignedElements, EncryptedElements or ContentEncryptedElements policy
*/
public class SecuredElementsPolicyValidator implements SecurityPolicyValidator {
private CoverageType coverageType = CoverageType.ENCRYPTED;
private CoverageScope coverageScope = CoverageScope.ELEMENT;
/**
* Return true if this SecurityPolicyValidator implementation is capable of validating a
* policy defined by the AssertionInfo parameter
*/
public boolean canValidatePolicy(AssertionInfo assertionInfo) {
if (coverageType == CoverageType.SIGNED) {
return assertionInfo.getAssertion() != null
&& (SP12Constants.SIGNED_ELEMENTS.equals(assertionInfo.getAssertion().getName())
|| SP11Constants.SIGNED_ELEMENTS.equals(assertionInfo.getAssertion().getName()));
} else if (coverageScope == CoverageScope.CONTENT) {
return assertionInfo.getAssertion() != null
&& (SP12Constants.CONTENT_ENCRYPTED_ELEMENTS.equals(assertionInfo.getAssertion().getName())
|| SP11Constants.CONTENT_ENCRYPTED_ELEMENTS.equals(assertionInfo.getAssertion().getName()));
} else {
return assertionInfo.getAssertion() != null
&& (SP12Constants.ENCRYPTED_ELEMENTS.equals(assertionInfo.getAssertion().getName())
|| SP11Constants.ENCRYPTED_ELEMENTS.equals(assertionInfo.getAssertion().getName()));
}
}
/**
* Validate policies.
*/
public void validatePolicies(PolicyValidatorParameters parameters, Collection<AssertionInfo> ais) {
// XPathFactory and XPath are not thread-safe so we must recreate them
// each request.
final XPathFactory factory = XPathFactory.newInstance();
final XPath xpath = factory.newXPath();
Element soapEnvelope =
parameters.getSoapHeader().getOwnerDocument().getDocumentElement();
Collection<WSDataRef> dataRefs = parameters.getEncrypted();
if (coverageType == CoverageType.SIGNED) {
dataRefs = parameters.getSigned();
}
for (AssertionInfo ai : ais) {
RequiredElements elements = (RequiredElements)ai.getAssertion();
ai.setAsserted(true);
if (elements != null && elements.getXPaths() != null && !elements.getXPaths().isEmpty()) {
List<String> expressions = new ArrayList<>();
MapNamespaceContext namespaceContext = new MapNamespaceContext();
for (org.apache.wss4j.policy.model.XPath xPath : elements.getXPaths()) {
expressions.add(xPath.getXPath());
Map<String, String> namespaceMap = xPath.getPrefixNamespaceMap();
if (namespaceMap != null) {
namespaceContext.addNamespaces(namespaceMap);
}
}
xpath.setNamespaceContext(namespaceContext);
try {
CryptoCoverageUtil.checkCoverage(soapEnvelope, dataRefs,
xpath, expressions, coverageType, coverageScope);
} catch (WSSecurityException e) {
ai.setNotAsserted("No " + coverageType
+ " element found matching one of the XPaths "
+ Arrays.toString(expressions.toArray()));
}
}
}
}
public CoverageType getCoverageType() {
return coverageType;
}
public void setCoverageType(CoverageType coverageType) {
this.coverageType = coverageType;
}
public CoverageScope getCoverageScope() {
return coverageScope;
}
public void setCoverageScope(CoverageScope coverageScope) {
this.coverageScope = coverageScope;
}
}