content: /*
   * 
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   * 
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   * 
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   */
  package jcifs.smb;
  
  
  import java.util.Objects;
  
  import org.bouncycastle.asn1.ASN1ObjectIdentifier;
  
  
  /**
   * This class is used to parse the name of context initiator and
   * context acceptor which are retrieved from GSSContext.
   * 
   * @author Shun
   *
   */
  class MIEName {
  
      private static byte[] TOK_ID = {
          04, 01
      };
      private static int TOK_ID_SIZE = 2;
      private static int MECH_OID_LEN_SIZE = 2;
      private static int NAME_LEN_SIZE = 4;
  
      private ASN1ObjectIdentifier oid;
      private String name;
  
  
      /**
       * Instance a <code>MIEName</code> object.
       * 
       * @param buf
       *            the name of context initiator or acceptor
       */
      MIEName ( byte[] buf ) {
          int i;
          int len;
          if ( buf.length < TOK_ID_SIZE + MECH_OID_LEN_SIZE ) {
              throw new IllegalArgumentException();
          }
          // TOK_ID
          for ( i = 0; i < TOK_ID.length; i++ ) {
              if ( TOK_ID[ i ] != buf[ i ] ) {
                  throw new IllegalArgumentException();
              }
          }
          // MECH_OID_LEN
          len = 0xff00 & ( buf[ i++ ] << 8 );
          len |= 0xff & buf[ i++ ];
  
          // MECH_OID
          if ( buf.length < i + len ) {
              throw new IllegalArgumentException();
          }
          byte[] bo = new byte[len];
          System.arraycopy(buf, i, bo, 0, len);
          i += len;
          this.oid = ASN1ObjectIdentifier.getInstance(bo);
  
          // NAME_LEN
          if ( buf.length < i + NAME_LEN_SIZE ) {
              throw new IllegalArgumentException();
          }
          len = 0xff000000 & ( buf[ i++ ] << 24 );
          len |= 0x00ff0000 & ( buf[ i++ ] << 16 );
          len |= 0x0000ff00 & ( buf[ i++ ] << 8 );
          len |= 0x000000ff & buf[ i++ ];
  
          // NAME
          if ( buf.length < i + len ) {
              throw new IllegalArgumentException();
          }
          this.name = new String(buf, i, len);
  
      }
  
  
      MIEName ( ASN1ObjectIdentifier oid, String name ) {
          this.oid = oid;
          this.name = name;
      }
  
  
      /*
       * (non-Javadoc)
       * 
       * @see java.lang.Object#equals(java.lang.Object)
       */
      @Override
      public boolean equals ( Object other ) {
  
          if ( other instanceof MIEName ) {
              MIEName terg = (MIEName) other;
              if ( Objects.equals(this.oid, terg.oid)
                      && ( ( this.name == null && terg.name == null ) || ( this.name != null && this.name.equalsIgnoreCase(terg.name) ) ) ) {
                  return true;
              }
          }
          return false;
      }
  
  
      /*
       * (non-Javadoc)
       * 
       * @see java.lang.Object#hashCode()
       */
      @Override
      public int hashCode () {
          return this.oid.hashCode();
      }
  
  
      /*
       * (non-Javadoc)
       * 
       * @see java.lang.Object#toString()
       */
      @Override
      public String toString () {
          return this.name;
      }
  }
  