nacho       00/10/20 18:26:19

  Added:       catalina/src/share/org/apache/catalina/util HexUtils.java
  Log:
  Some enhancements to JDBCRealm:
  
  * Digest Passwords
  * connectionName & connectionPassword attributes
  * HexUtils took from 3.x added to Catalina Util
  
  Revision  Changes    Path
  1.1                  
jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/util/HexUtils.java
  
  Index: HexUtils.java
  ===================================================================
  /*
   * $Header: 
/home/cvs/jakarta-tomcat-4.0/catalina/src/share/org/apache/catalina/util/HexUtils.java,v
 1.1 2000/10/21 01:26:19 nacho Exp $
   * $Revision: 1.1 $
   * $Date: 2000/10/21 01:26:19 $
   *
   * ====================================================================
   *
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 1999 The Apache Software Foundation.  All rights 
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer. 
   *
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:  
   *       "This product includes software developed by the 
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Tomcat", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written 
   *    permission, please contact [EMAIL PROTECTED]
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   * [Additional notices, if required by prior licensing conditions]
   *
   */ 
  
  
  package org.apache.catalina.util;
  
  import java.io.ByteArrayOutputStream;
  
  /**
   * Library of utility methods useful in dealing with converting byte arrays
   * to and from strings of hexadecimal digits.
   *
   * @author Craig R. McClanahan
   */
  
  public final class HexUtils {
      // Code from Ajp11, from Apache's JServ
      
      // Table for HEX to DEC byte translation
      public static final int[] DEC = {
          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
          00, 01, 02, 03, 04, 05, 06, 07,  8,  9, -1, -1, -1, -1, -1, -1,
          -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
          -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
          -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
      };
      
  
  
      /**
       * The string manager for this package.
       */
      private static StringManager sm =
        StringManager.getManager("org.apache.tomcat.resources");
  
  
      /**
       * Convert a String of hexadecimal digits into the corresponding
       * byte array by encoding each two hexadecimal digits as a byte.
       *
       * @param digits Hexadecimal digits representation
       *
       * @exception IllegalArgumentException if an invalid hexadecimal digit
       *  is found, or the input string contains an odd number of hexadecimal
       *  digits
       */
      public static byte[] convert(String digits) {
  
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        for (int i = 0; i < digits.length(); i += 2) {
            char c1 = digits.charAt(i);
            if ((i+1) >= digits.length())
                throw new IllegalArgumentException
                    (sm.getString("hexUtil.odd"));
            char c2 = digits.charAt(i + 1);
            byte b = 0;
            if ((c1 >= '0') && (c1 <= '9'))
                b += ((c1 - '0') * 16);
            else if ((c1 >= 'a') && (c1 <= 'f'))
                b += ((c1 - 'a' + 10) * 16);
            else if ((c1 >= 'A') && (c1 <= 'F'))
                b += ((c1 - 'A' + 10) * 16);
            else
                throw new IllegalArgumentException
                    (sm.getString("hexUtil.bad"));
            if ((c2 >= '0') && (c2 <= '9'))
                b += (c2 - '0');
            else if ((c2 >= 'a') && (c2 <= 'f'))
                b += (c2 - 'a' + 10);
            else if ((c2 >= 'A') && (c2 <= 'F'))
                b += (c2 - 'A' + 10);
            else
                throw new IllegalArgumentException
                    (sm.getString("hexUtil.bad"));
            baos.write(b);
        }
        return (baos.toByteArray());
  
      }
  
  
      /**
       * Convert a byte array into a printable format containing a
       * String of hexadecimal digit characters (two per byte).
       *
       * @param bytes Byte array representation
       */
      public static String convert(byte bytes[]) {
  
        StringBuffer sb = new StringBuffer(bytes.length * 2);
        for (int i = 0; i < bytes.length; i++) {
            sb.append(convertDigit((int) (bytes[i] >> 4)));
            sb.append(convertDigit((int) (bytes[i] & 0x0f)));
        }
        return (sb.toString());
  
      }
  
      /**
       * Convert 4 hex digits to an int, and return the number of converted
       * bytes.
       *
       * @param hex Byte array containing exactly four hexadecimal digits
       *
       * @exception IllegalArgumentException if an invalid hexadecimal digit
       *  is included
       */
      public static int convert2Int( byte[] hex ) {
        // Code from Ajp11, from Apache's JServ
      
        // assert b.length==4
        // assert valid data
        int len;
        if(hex.length < 4 ) return 0;
        if( DEC[hex[0]]<0 )
            throw new IllegalArgumentException(sm.getString("hexUtil.bad"));
        len = DEC[hex[0]];
        len = len << 4;
        if( DEC[hex[1]]<0 )
            throw new IllegalArgumentException(sm.getString("hexUtil.bad"));
        len += DEC[hex[1]];
        len = len << 4;
        if( DEC[hex[2]]<0 )
            throw new IllegalArgumentException(sm.getString("hexUtil.bad"));
        len += DEC[hex[2]];
        len = len << 4;
        if( DEC[hex[3]]<0 )
            throw new IllegalArgumentException(sm.getString("hexUtil.bad"));
        len += DEC[hex[3]];
        return len;
      }
  
  
  
      /**
       * [Private] Convert the specified value (0 .. 15) to the corresponding
       * hexadecimal digit.
       *
       * @param value Value to be converted
       */
      private static char convertDigit(int value) {
  
        value &= 0x0f;
        if (value >= 10)
            return ((char) (value - 10 + 'a'));
        else
            return ((char) (value + '0'));
  
      }
  
  
  }
  
  
  

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