code: /**
   * 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.policy.builders;
  
  import java.util.Iterator;
  import java.util.List;
  
  import javax.xml.namespace.QName;
  
  import org.w3c.dom.Element;
  
  import org.apache.cxf.helpers.DOMUtils;
  import org.apache.cxf.ws.policy.PolicyBuilder;
  import org.apache.cxf.ws.policy.PolicyConstants;
  import org.apache.cxf.ws.security.policy.SP11Constants;
  import org.apache.cxf.ws.security.policy.SP12Constants;
  import org.apache.cxf.ws.security.policy.SPConstants;
  import org.apache.cxf.ws.security.policy.model.X509Token;
  import org.apache.neethi.Assertion;
  import org.apache.neethi.AssertionBuilderFactory;
  import org.apache.neethi.Policy;
  import org.apache.neethi.builders.AssertionBuilder;
  
  public class X509TokenBuilder implements AssertionBuilder<Element> {
      
      PolicyBuilder builder;
      public X509TokenBuilder(PolicyBuilder b) {
          builder = b;
      }
  
      public Assertion build(Element element, AssertionBuilderFactory factory)
          throws IllegalArgumentException {
          
          SPConstants consts = SP11Constants.SP_NS.equals(element.getNamespaceURI())
              ? SP11Constants.INSTANCE : SP12Constants.INSTANCE;
          X509Token x509Token = new X509Token(consts);
          x509Token.setOptional(PolicyConstants.isOptional(element));
          x509Token.setIgnorable(PolicyConstants.isIgnorable(element));
  
          Element policyElement = DOMUtils.getFirstElement(element);
          if (policyElement == null && consts != SP11Constants.INSTANCE) {
              throw new IllegalArgumentException(
                  "sp:X509Token/wsp:Policy must have a value"
              );
          }
  
          // Process token inclusion
          String includeAttr = DOMUtils.getAttribute(element, consts.getIncludeToken());
  
          if (includeAttr != null) {
              SPConstants.IncludeTokenType inclusion 
                  = consts.getInclusionFromAttributeValue(includeAttr);
              x509Token.setInclusion(inclusion);
          }
  
          if (policyElement != null) {
              if (DOMUtils.getFirstChildWithName(policyElement, consts.getRequiredDerivedKeys()) != null) {
                  x509Token.setDerivedKeys(true);
              } else if (DOMUtils.getFirstChildWithName(policyElement, 
                      SP12Constants.REQUIRE_IMPLIED_DERIVED_KEYS) != null) {
                  x509Token.setImpliedDerivedKeys(true);
              } else if (DOMUtils.getFirstChildWithName(policyElement, 
                      SP12Constants.REQUIRE_EXPLICIT_DERIVED_KEYS) != null) {
                  x509Token.setExplicitDerivedKeys(true);
              }
          }
  
          Policy policy = builder.getPolicy(DOMUtils.getFirstElement(element));
          policy = policy.normalize(builder.getPolicyRegistry(), false);
  
          for (Iterator<List<Assertion>> iterator = policy.getAlternatives(); iterator.hasNext();) {
              processAlternative(iterator.next(), x509Token, consts);
  
              /*
               * since there should be only one alternative
               */
              break;
          }
          return x509Token;
      }
  
      private void processAlternative(List<Assertion> assertions, X509Token parent, SPConstants consts) {
          QName name;
  
          for (Assertion assertion : assertions) {
              name = assertion.getName();
              
              if (!consts.getNamespace().equals(name.getNamespaceURI())) {
                  continue;
              }
  
              if (SPConstants.REQUIRE_KEY_IDENTIFIER_REFERENCE.equals(name.getLocalPart())) {
                  parent.setRequireKeyIdentifierReference(true);
  
              } else if (SPConstants.REQUIRE_ISSUER_SERIAL_REFERENCE.equals(name.getLocalPart())) {
                  parent.setRequireIssuerSerialReference(true);
  
              } else if (SPConstants.REQUIRE_EMBEDDED_TOKEN_REFERENCE.equals(name.getLocalPart())) {
                  parent.setRequireEmbeddedTokenReference(true);
  
              } else if (SPConstants.REQUIRE_THUMBPRINT_REFERENCE.equals(name.getLocalPart())) {
                  parent.setRequireThumbprintReference(true);
  
              } else if (SPConstants.WSS_X509_V1_TOKEN10.equals(name.getLocalPart())) {
                  parent.setTokenVersionAndType(SPConstants.WSS_X509_V1_TOKEN10);
  
              } else if (SPConstants.WSS_X509_V1_TOKEN11.equals(name.getLocalPart())) {
                  parent.setTokenVersionAndType(SPConstants.WSS_X509_V1_TOKEN11);
  
              } else if (SPConstants.WSS_X509_V3_TOKEN10.equals(name.getLocalPart())) {
                  parent.setTokenVersionAndType(SPConstants.WSS_X509_V3_TOKEN10);
  
              } else if (SPConstants.WSS_X509_V3_TOKEN11.equals(name.getLocalPart())) {
                  parent.setTokenVersionAndType(SPConstants.WSS_X509_V3_TOKEN11);
  
              } else if (SPConstants.WSS_X509_PKCS7_TOKEN10.equals(name.getLocalPart())) {
                  parent.setTokenVersionAndType(SPConstants.WSS_X509_PKCS7_TOKEN10);
  
              } else if (SPConstants.WSS_X509_PKCS7_TOKEN11.equals(name.getLocalPart())) {
                  parent.setTokenVersionAndType(SPConstants.WSS_X509_PKCS7_TOKEN11);
  
              } else if (SPConstants.WSS_X509_PKI_PATH_V1_TOKEN10.equals(name.getLocalPart())) {
                  parent.setTokenVersionAndType(SPConstants.WSS_X509_PKI_PATH_V1_TOKEN10);
  
              } else if (SPConstants.WSS_X509_PKI_PATH_V1_TOKEN11.equals(name.getLocalPart())) {
                  parent.setTokenVersionAndType(SPConstants.WSS_X509_PKI_PATH_V1_TOKEN11);
              }
          }
      }
  
      public QName[] getKnownElements() {
          return new QName[]{SP11Constants.X509_TOKEN, SP12Constants.X509_TOKEN};
      }
  
  }
  