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.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.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.SPConstants;
  import org.apache.cxf.ws.security.policy.model.SupportingToken;
  import org.apache.ws.security.WSConstants;
  import org.apache.ws.security.WSSecurityEngineResult;
  import org.apache.ws.security.message.token.UsernameToken;
  import org.apache.ws.security.util.WSSecurityUtil;
  
  /**
   * Validate a UsernameToken policy.
   */
  public class UsernameTokenPolicyValidator 
      extends AbstractTokenPolicyValidator implements TokenPolicyValidator {
      
      public boolean validatePolicy(
          AssertionInfoMap aim,
          Message message,
          Element soapBody,
          List<WSSecurityEngineResult> results,
          List<WSSecurityEngineResult> signedResults
      ) {
          Collection<AssertionInfo> ais = aim.get(SP12Constants.USERNAME_TOKEN);
          if (ais == null || ais.isEmpty()) {
              return true;
          }
          
          List<WSSecurityEngineResult> utResults = new ArrayList<WSSecurityEngineResult>();
          WSSecurityUtil.fetchAllActionResults(results, WSConstants.UT, utResults);
          WSSecurityUtil.fetchAllActionResults(results, WSConstants.UT_NOPASSWORD, utResults);
          
          for (AssertionInfo ai : ais) {
              org.apache.cxf.ws.security.policy.model.UsernameToken usernameTokenPolicy = 
                  (org.apache.cxf.ws.security.policy.model.UsernameToken)ai.getAssertion();
              ai.setAsserted(true);
  
              if (!isTokenRequired(usernameTokenPolicy, message)) {
                  continue;
              }
  
              if (utResults.isEmpty()) {
                  ai.setNotAsserted(
                      "The received token does not match the token inclusion requirement"
                  );
                  continue;
              }
  
              if (!checkTokens(usernameTokenPolicy, ai, utResults)) {
                  continue;
              }
          }
          return true;
      }
      
      /**
       * All UsernameTokens must conform to the policy
       */
      public boolean checkTokens(
          org.apache.cxf.ws.security.policy.model.UsernameToken usernameTokenPolicy,
          AssertionInfo ai,
          List<WSSecurityEngineResult> utResults
      ) {
          for (WSSecurityEngineResult result : utResults) {
              UsernameToken usernameToken = 
                  (UsernameToken)result.get(WSSecurityEngineResult.TAG_USERNAME_TOKEN);
              if (usernameTokenPolicy.isHashPassword() != usernameToken.isHashed()) {
                  ai.setNotAsserted("Password hashing policy not enforced");
                  return false;
              }
              if (usernameTokenPolicy.isNoPassword() && (usernameToken.getPassword() != null)) {
                  ai.setNotAsserted("Username Token NoPassword policy not enforced");
                  return false;
              } else if (!usernameTokenPolicy.isNoPassword() && (usernameToken.getPassword() == null)
                  && isNonEndorsingSupportingToken(usernameTokenPolicy)) {
                  ai.setNotAsserted("Username Token No Password supplied");
                  return false;
              }
              
              if (usernameTokenPolicy.isRequireCreated() 
                  && (usernameToken.getCreated() == null || usernameToken.isHashed())) {
                  ai.setNotAsserted("Username Token Created policy not enforced");
                  return false;
              }
              if (usernameTokenPolicy.isRequireNonce() 
                  && (usernameToken.getNonce() == null || usernameToken.isHashed())) {
                  ai.setNotAsserted("Username Token Nonce policy not enforced");
                  return false;
              }
          }
          return true;
      }
      
      /**
       * Return true if this UsernameToken policy is a (non-endorsing)SupportingToken. If this is
       * true then the corresponding UsernameToken must have a password element.
       */
      private boolean isNonEndorsingSupportingToken(
          org.apache.cxf.ws.security.policy.model.UsernameToken usernameTokenPolicy
      ) {
          SupportingToken supportingToken = usernameTokenPolicy.getSupportingToken();
          if (supportingToken != null) {
              SPConstants.SupportTokenType type = supportingToken.getTokenType();
              if (type == SPConstants.SupportTokenType.SUPPORTING_TOKEN_SUPPORTING
                  || type == SPConstants.SupportTokenType.SUPPORTING_TOKEN_SIGNED
                  || type == SPConstants.SupportTokenType.SUPPORTING_TOKEN_SIGNED_ENCRYPTED
                  || type == SPConstants.SupportTokenType.SUPPORTING_TOKEN_ENCRYPTED) {
                  return true;
              }
          }
          return false;
      }
      
  }
  