BotlistUniqueId.java Source code

Introduction

Here is the source code for BotlistUniqueId.java

Source

/**
 * Berlin Brown
 * Dec 6, 2006
 *
 * -------------------------- COPYRIGHT_AND_LICENSE --
 * Botlist contains an open source suite of software applications for 
 * social bookmarking and collecting online news content for use on the web.  
 * Multiple web front-ends exist for Django, Rails, and J2EE.  
 * Users and remote agents are allowed to submit interesting articles.
 *
 * Copyright (c) 2007, Botnode.com (Berlin Brown)
 * http://www.opensource.org/licenses/bsd-license.php
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, 
 * are permitted provided that the following conditions are met:
 *
 *       * Redistributions of source code must retain the above copyright notice, 
 *       this list of conditions and the following disclaimer.
 *       * 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.
 *       * Neither the name of the Botnode.com (Berlin Brown) nor 
 *       the names of its contributors may be used to endorse or promote 
 *       products derived from this software without specific prior written permission.
 *   
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS 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 COPYRIGHT OWNER OR
 * 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.
 * -------------------------- END_COPYRIGHT_AND_LICENSE --
 */
//package org.bresearch.websec.utils.botlist;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Random;

/**
 * This is class is used by botverse.
 * 
 * Usage: BotListUniqueId.getUniqueId())
 * @author Berlin Brown
 *
 */
public class BotlistUniqueId {

    private String toHexString(byte[] bytes) {

        char[] ret = new char[bytes.length * 2];
        for (int i = 0, j = 0; i < bytes.length; i++) {
            int c = (int) bytes[i];
            if (c < 0) {
                c += 0x100;
            }
            ret[j++] = Character.forDigit(c / 0x10, 0x10);
            ret[j++] = Character.forDigit(c % 0x10, 0x10);

        }

        return new String(ret);
    }

    public String getUniqueId() {

        String digest = "";

        try {
            MessageDigest md = MessageDigest.getInstance("MD5");

            String timeVal = "" + (System.currentTimeMillis() + 1);
            String localHost = "";
            ;
            try {
                localHost = InetAddress.getLocalHost().toString();
            } catch (UnknownHostException e) {
                // If an error, we can use other values.            
            }

            String randVal = "" + new Random().nextInt();
            String val = timeVal + localHost + randVal;
            md.reset();
            md.update(val.getBytes());

            // Generate the digest.
            digest = toHexString(md.digest());
        } catch (NoSuchAlgorithmException e) {

        } // End of the Try - Catch

        return digest;
    } // End of the Method //

}