package gnu.crypto.sasl;

// ----------------------------------------------------------------------------
// $Id: SaslUtil.java,v 1.3 2005/10/06 04:24:18 rsdio Exp $
//
// Copyright (C) 2003, Free Software Foundation, Inc.
//
// This file is part of GNU Crypto.
//
// GNU Crypto is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
//
// GNU Crypto 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
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; see the file COPYING.  If not, write to the
//
//    Free Software Foundation Inc.,
//    51 Franklin Street, Fifth Floor,
//    Boston, MA 02110-1301
//    USA
//
// Linking this library statically or dynamically with other modules is
// making a combined work based on this library.  Thus, the terms and
// conditions of the GNU General Public License cover the whole
// combination.
//
// As a special exception, the copyright holders of this library give
// you permission to link this library with independent modules to
// produce an executable, regardless of the license terms of these
// independent modules, and to copy and distribute the resulting
// executable under terms of your choice, provided that you also meet,
// for each linked independent module, the terms and conditions of the
// license of that module.  An independent module is a module which is
// not derived from or based on this library.  If you modify this
// library, you may extend this exception to your version of the
// library, but you are not obligated to do so.  If you do not wish to
// do so, delete this exception statement from your version.
// ----------------------------------------------------------------------------

import gnu.crypto.util.Util;

import java.math.BigInteger;
import java.security.MessageDigest;

/**
 * Utility methods for SASL-related classes.
 *
 * @version $Revision: 1.3 $
 */
public class SaslUtil {

   // Constants and variables
   // -------------------------------------------------------------------------

   // Constructor(s)
   // -------------------------------------------------------------------------

   private SaslUtil() {
      super();
   }

   // Class methods
   // -------------------------------------------------------------------------

   public static final boolean validEmailAddress(String address) {
      // need to do better than this
      return (address.indexOf("@") != -1);
   }

   // Visualisation methods
   // -------------------------------------------------------------------------

   /** Returns the context of the designated hash as a string. */
   public static final String dump(MessageDigest md) {
      String result;
      try {
         result = Util.dumpString(((MessageDigest) md.clone()).digest());
      } catch (Exception ignored) {
         result = "...";
      }
      return result;
   }
}