/*
 * 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.jboss.test.ws.jaxws.samples.wsse.policy.shared;

import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 *
 * User: rsearls
 * Date: 2/5/14
 */
public class WSTrustAppUtils {

   public static String getServerHost() {
      final String host = System.getProperty("jboss.bind.address", "localhost");
      return toIPv6URLFormat(host);
   }

   private static String toIPv6URLFormat(final String host)
   {
      try
      {
         if (host.startsWith("[") || host.startsWith(":"))
         {
            if (System.getProperty("java.net.preferIPv4Stack") == null)
            {
               throw new IllegalStateException("always provide java.net.preferIPv4Stack JVM property when using IPv6 address format");
            }
            if (System.getProperty("java.net.preferIPv6Addresses") == null)
            {
               throw new IllegalStateException("always provide java.net.preferIPv6Addresses JVM property when using IPv6 address format");
            }
         }
         final boolean isIPv6Address = InetAddress.getByName(host) instanceof Inet6Address;
         final boolean isIPv6Formatted = isIPv6Address && host.startsWith("[");
         return isIPv6Address && !isIPv6Formatted ? "[" + host + "]" : host;
      }
      catch (final UnknownHostException e)
      {
         throw new RuntimeException(e);
      }
   }
}
