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.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.IssuedToken;
  import org.apache.cxf.ws.security.policy.model.KerberosToken;
  import org.apache.cxf.ws.security.policy.model.KeyValueToken;
  import org.apache.cxf.ws.security.policy.model.SamlToken;
  import org.apache.cxf.ws.security.policy.model.SecurityContextToken;
  import org.apache.cxf.ws.security.policy.model.SupportingToken;
  import org.apache.cxf.ws.security.policy.model.Token;
  import org.apache.cxf.ws.security.policy.model.UsernameToken;
  import org.apache.cxf.ws.security.policy.model.X509Token;
  import org.apache.ws.security.WSSecurityEngineResult;
  
  /**
   * Validate SignedSupportingToken policies.
   */
  public class SignedTokenPolicyValidator extends AbstractSupportingTokenPolicyValidator {
      
      public SignedTokenPolicyValidator() {
          setSigned(true);
      }
      
      public boolean validatePolicy(
          AssertionInfoMap aim, 
          Message message,
          List<WSSecurityEngineResult> results,
          List<WSSecurityEngineResult> signedResults,
          List<WSSecurityEngineResult> encryptedResults
      ) {
          Collection<AssertionInfo> ais = aim.get(SP12Constants.SIGNED_SUPPORTING_TOKENS);
          if (ais == null || ais.isEmpty()) {                       
              return true;
          }
          
          setMessage(message);
          setResults(results);
          setSignedResults(signedResults);
          setEncryptedResults(encryptedResults);
          
          for (AssertionInfo ai : ais) {
              SupportingToken binding = (SupportingToken)ai.getAssertion();
              if (SPConstants.SupportTokenType.SUPPORTING_TOKEN_SIGNED != binding.getTokenType()) {
                  continue;
              }
              ai.setAsserted(true);
              
              setSignedParts(binding.getSignedParts());
              setEncryptedParts(binding.getEncryptedParts());
              setSignedElements(binding.getSignedElements());
              setEncryptedElements(binding.getEncryptedElements());
              
              List<Token> tokens = binding.getTokens();
              for (Token token : tokens) {
                  if (!isTokenRequired(token, message)) {
                      continue;
                  }
                  
                  boolean processingFailed = false;
                  if (token instanceof UsernameToken) {
                      if (!processUsernameTokens()) {
                          processingFailed = true;
                      }
                  } else if (token instanceof SamlToken) {
                      if (!processSAMLTokens()) {
                          processingFailed = true;
                      }
                  } else if (token instanceof KerberosToken) {
                      if (!processKerberosTokens()) {
                          processingFailed = true;
                      }
                  } else if (token instanceof X509Token) {
                      if (!processX509Tokens()) {
                          processingFailed = true;
                      }
                  } else if (token instanceof KeyValueToken) {
                      if (!processKeyValueTokens()) {
                          processingFailed = true;
                      }
                  } else if (token instanceof SecurityContextToken) {
                      if (!processSCTokens()) {
                          processingFailed = true;
                      }
                  } else if (!(token instanceof IssuedToken)) {
                      processingFailed = true;
                  }
                  
                  if (processingFailed) {
                      ai.setNotAsserted(
                          "The received token does not match the signed supporting token requirement"
                      );
                      continue;
                  }
              }
  
          }
          
          return true;
      }
      
  }
  