/*
    *  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.directory.shared.kerberos.components;
  
  import java.security.MessageDigest;
  import java.util.Arrays;
  
  import org.apache.directory.api.util.Strings;
  import org.apache.directory.shared.kerberos.codec.types.AuthorizationType;
  
  
  /**
   * The class storing the individual AuthorizationDatas
   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
   */
  public class AuthorizationDataEntry
  {
      /** the type of authorization data */
      private AuthorizationType adType;
  
      /** the authorization data */
      private byte[] adData;
  
  
      /**
       * Creates a new instance of AD entry
       */
      public AuthorizationDataEntry()
      {
  
      }
  
  
      /**
       * Creates a new Instance of AD entry
       * 
       * @param adType The AuthorizationData type
       * @param adData The AuthorizationData data
       */
      public AuthorizationDataEntry( AuthorizationType adType, byte[] adData )
      {
          this.adType = adType;
  
          if ( adData != null )
          {
              this.adData = new byte[adData.length];
              System.arraycopy( adData, 0, this.adData, 0, adData.length );
          }
      }
  
  
      /**
       * @return the adType
       */
      public AuthorizationType getAdType()
      {
          return adType;
      }
  
  
      /**
       * @param adType the adType to set
       */
      public void setAdType( AuthorizationType adType )
      {
          this.adType = adType;
      }
  
  
      /**
       * @return a copy of adData
       */
      public byte[] getAdData()
      {
          if ( Strings.isEmpty( adData ) )
          {
              return Strings.EMPTY_BYTES;
          }
          else
          {
              byte[] copy = new byte[adData.length];
  
             System.arraycopy( adData, 0, copy, 0, adData.length );
 
             return copy;
         }
     }
 
 
     /**
      * @return the reference on adData
      */
     public byte[] getAdDataRef()
     {
         return adData;
     }
 
 
     /**
      * @param adData the adData to set
      */
     public void setAdData( byte[] adData )
     {
         if ( Strings.isEmpty( adData ) )
         {
             this.adData = Strings.EMPTY_BYTES;
         }
         else
         {
             this.adData = new byte[adData.length];
 
             System.arraycopy( adData, 0, this.adData, 0, adData.length );
         }
     }
 
 
     /**
      * {@inheritDoc}
      */
     @Override
     public int hashCode()
     {
         final int prime = 31;
         int result = 17;
         result = prime * result + Arrays.hashCode( adData );
         result = prime * result + ( ( adType == null ) ? 0 : adType.hashCode() );
         return result;
     }
 
 
     /**
      * {@inheritDoc}
      */
     @Override
     public boolean equals( Object obj )
     {
         if ( this == obj )
         {
             return true;
         }
 
         if ( !( obj instanceof AuthorizationDataEntry ) )
         {
             return false;
         }
 
         AuthorizationDataEntry./org/apache/directory/shared/kerberos/components/AuthorizationDataEntry.html#AuthorizationDataEntry">AuthorizationDataEntry other = ( AuthorizationDataEntry ) obj;
 
         if ( !MessageDigest.isEqual( adData, other.adData ) )
         {
             return false;
         }
 
         return adType == other.adType;
     }
 
 
     /**
      * @see Object#toString()
      */
     public String toString( String tabs )
     {
         StringBuilder sb = new StringBuilder();
 
         sb.append( tabs ).append( "AuthorizationDataEntry : {\n" );
         sb.append( tabs ).append( "    adType : " ).append( adType ).append( "\n" );
         sb.append( tabs ).append( "    adData : " ).append( Strings.dumpBytes( adData ) ).append( "\n" );
         sb.append( tabs ).append( "}" );
         return sb.toString();
     }
 
 
     /**
      * @see Object#toString()
      */
     public String toString()
     {
         return toString( "" );
     }
 }