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.Collection;
  import java.util.List;
  
  import org.w3c.dom.Element;
  
  import org.apache.cxf.message.Message;
  import org.apache.cxf.message.MessageUtils;
  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.SPConstants;
  import org.apache.cxf.ws.security.policy.model.Layout;
  import org.apache.cxf.ws.security.policy.model.TransportBinding;
  import org.apache.ws.security.WSSecurityEngineResult;
  
  /**
   * Validate a TransportBinding policy.
   */
  public class TransportBindingPolicyValidator extends AbstractBindingPolicyValidator {
      
      public boolean validatePolicy(
          AssertionInfoMap aim,
          Message message,
          Element soapBody,
          List<WSSecurityEngineResult> results,
          List<WSSecurityEngineResult> signedResults,
          List<WSSecurityEngineResult> encryptedResults
      ) {
          Collection<AssertionInfo> ais = aim.get(SP12Constants.TRANSPORT_BINDING);
          if (ais == null || ais.isEmpty()) {                       
              return true;
          }
          
          for (AssertionInfo ai : ais) {
              TransportBinding binding = (TransportBinding)ai.getAssertion();
              ai.setAsserted(true);
              
              // Check that TLS is in use if we are not the requestor
              boolean initiator = MessageUtils.isRequestor(message);
              TLSSessionInfo tlsInfo = message.get(TLSSessionInfo.class);
              if (!initiator && tlsInfo == null) {
                  ai.setNotAsserted("TLS is not enabled");
                  continue;
              }
              
              // HttpsToken is validated by the HttpsTokenInterceptorProvider
              if (binding.getTransportToken() != null) {
                  assertPolicy(aim, binding.getTransportToken());
              }
              
              // Check the IncludeTimestamp
              if (!validateTimestamp(binding.isIncludeTimestamp(), true, results, signedResults, message)) {
                  String error = "Received Timestamp does not match the requirements";
                  notAssertPolicy(aim, SP12Constants.INCLUDE_TIMESTAMP, error);
                  ai.setNotAsserted(error);
                  continue;
              }
              assertPolicy(aim, SP12Constants.INCLUDE_TIMESTAMP);
              
              // Check the Layout
              Layout layout = binding.getLayout();
              boolean timestampFirst = layout.getValue() == SPConstants.Layout.LaxTimestampFirst;
              boolean timestampLast = layout.getValue() == SPConstants.Layout.LaxTimestampLast;
              if (!validateLayout(timestampFirst, timestampLast, results)) {
                  String error = "Layout does not match the requirements";
                  notAssertPolicy(aim, SP12Constants.LAYOUT, error);
                  ai.setNotAsserted(error);
                  continue;
              }
              assertPolicy(aim, SP12Constants.LAYOUT);
          }
          
          // We don't need to check these policies for the Transport binding
          assertPolicy(aim, SP12Constants.ENCRYPTED_PARTS);
          assertPolicy(aim, SP12Constants.SIGNED_PARTS);
          
          return true;
      }
      
  }
  