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.wss4j.policyvalidators;
  
  import java.security.cert.Certificate;
  import java.util.ArrayList;
  import java.util.Collection;
  import java.util.List;
  
  import org.w3c.dom.Element;
  
  import org.apache.cxf.message.Message;
  import org.apache.cxf.security.transport.TLSSessionInfo;
  import org.apache.cxf.ws.policy.AssertionInfo;
  import org.apache.cxf.ws.policy.AssertionInfoMap;
  import org.apache.cxf.ws.security.policy.SP12Constants;
  import org.apache.cxf.ws.security.policy.model.SamlToken;
  import org.apache.cxf.ws.security.wss4j.SAMLUtils;
  import org.apache.ws.security.WSConstants;
  import org.apache.ws.security.WSSecurityEngineResult;
  import org.apache.ws.security.saml.ext.AssertionWrapper;
  import org.apache.ws.security.util.WSSecurityUtil;
  import org.opensaml.common.SAMLVersion;
  
  /**
   * Validate a SamlToken policy.
   */
  public class SamlTokenPolicyValidator extends AbstractSamlPolicyValidator implements TokenPolicyValidator {
      
      private Element body;
      private List<WSSecurityEngineResult> signed;
      
      public boolean validatePolicy(
          AssertionInfoMap aim,
          Message message,
          Element soapBody,
          List<WSSecurityEngineResult> results,
          List<WSSecurityEngineResult> signedResults
      ) {
          Collection<AssertionInfo> ais = aim.get(SP12Constants.SAML_TOKEN);
          if (ais == null || ais.isEmpty()) {
              return true;
          }
          
          body = soapBody;
          signed = signedResults;
          
          List<WSSecurityEngineResult> samlResults = new ArrayList<WSSecurityEngineResult>();
          WSSecurityUtil.fetchAllActionResults(results, WSConstants.ST_SIGNED, samlResults);
          WSSecurityUtil.fetchAllActionResults(results, WSConstants.ST_UNSIGNED, samlResults);
          
          for (AssertionInfo ai : ais) {
              SamlToken samlToken = (SamlToken)ai.getAssertion();
              ai.setAsserted(true);
  
              if (!isTokenRequired(samlToken, message)) {
                  continue;
              }
  
              if (samlResults.isEmpty()) {
                  ai.setNotAsserted(
                      "The received token does not match the token inclusion requirement"
                  );
                  continue;
              }
              
              // All of the received SAML Assertions must conform to the policy
              for (WSSecurityEngineResult result : samlResults) {
                  AssertionWrapper assertionWrapper = 
                      (AssertionWrapper)result.get(WSSecurityEngineResult.TAG_SAML_ASSERTION);
                  
                  if (!checkVersion(samlToken, assertionWrapper)) {
                      ai.setNotAsserted("Wrong SAML Version");
                      continue;
                  }
                  TLSSessionInfo tlsInfo = message.get(TLSSessionInfo.class);
                  Certificate[] tlsCerts = null;
                  if (tlsInfo != null) {
                      tlsCerts = tlsInfo.getPeerCertificates();
                  }
                  if (!checkHolderOfKey(assertionWrapper, signedResults, tlsCerts)) {
                      ai.setNotAsserted("Assertion fails holder-of-key requirements");
                      continue;
                  }
                  if (!SAMLUtils.checkSenderVouches(assertionWrapper, tlsCerts, body, signed)) {
                      ai.setNotAsserted("Assertion fails sender-vouches requirements");
                      continue;
                  }
                  /*
                      if (!checkIssuerName(samlToken, assertionWrapper)) {
                          ai.setNotAsserted("Wrong IssuerName");
                      }
                   */
              }
          }
          
          return true;
      }
      
      /**
       * Check the IssuerName policy against the received assertion
      private boolean checkIssuerName(SamlToken samlToken, AssertionWrapper assertionWrapper) {
          String issuerName = samlToken.getIssuerName();
          if (issuerName != null && !"".equals(issuerName)) {
              String assertionIssuer = assertionWrapper.getIssuerString();
              if (!issuerName.equals(assertionIssuer)) {
                  return false;
              }
          }
          return true;
      }
      */
      
      /**
       * Check the policy version against the received assertion
       */
      private boolean checkVersion(SamlToken samlToken, AssertionWrapper assertionWrapper) {
          if ((samlToken.isUseSamlVersion11Profile10()
              || samlToken.isUseSamlVersion11Profile11())
              && assertionWrapper.getSamlVersion() != SAMLVersion.VERSION_11) {
              return false;
          } else if (samlToken.isUseSamlVersion20Profile11()
              && assertionWrapper.getSamlVersion() != SAMLVersion.VERSION_20) {
              return false;
          }
          return true;
      }
      
  }
  