userhash.java

JMule是一个基于Java开发

/*
 *  JMule - Java file sharing client
 *  Copyright (C) 2007-2008 JMule team ( [e-mail] / http://jmule.org )
 *
 *  Any parts of this program derived from other projects, or contributed
 *  by third-party developers are copyrighted by their respective authors.
 *
 *  This program 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
 *  of the License, or (at your option) any later version.
 *
 *  This program 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; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 *
 */
package org.jmule.core.edonkey.impl;

import java.util.Arrays;
import java.util.Random;

import org.jmule.util.Convert;

/**
 * 
 * @author binary256
 * @version $$Revision: 1.3 $$
 * Last changed by $$Author: binary256_ $$ on $$Date: 2008/09/02 15:07:10 $$
 */
public class UserHash {
	
	private byte[] userHash = new byte[16];
	
	public UserHash() { }
	
	public UserHash(byte[] hash){
		
		this.userHash=hash;
		
	}
	
	public UserHash(String hash) {
		
		loadFromString(hash);
	}
	
	public static UserHash genNewUserHash() {
		byte[] hash = new byte[16];
		new Random().nextBytes( hash );
		hash[5] = 14;
		hash[14] = 111;
		return new UserHash(hash);
	}
	
	public byte[] getUserHash() {
		
		return this.userHash;
		
	}
	
	public String getAsString() {
		String value="";
		
		for(int i = 0 ; i < userHash.length; i++)
			
			value = value + Convert.byteToHex(userHash[i]);
		
		return value;
	}
	
	
	public String toString() {
		
		String sValue="";
		
		for(int i = 0 ; i < userHash.length; i++)
			
			sValue = sValue + Convert.byteToHex(userHash[i]);
		
		return sValue;
		
	}
	
	public void loadFromString(String inputString){
		
		for(int i = 0; i < userHash.length; i++)
			
			userHash[i] = Convert.hexToByte(inputString.charAt(i*2)+""+inputString.charAt(i*2+1));
		
	}
	
	public void setUserHash(byte data[]){
		
		userHash = data;
		
	}
	
	public int hashCode() {
		return getAsString().hashCode();
	}
	
	public boolean equals(Object object) {
		if (object==null) return false;
		if (!(object instanceof UserHash )) return false;
		UserHash hash = (UserHash)object;
		return Arrays.equals(userHash, hash.getUserHash());
	}
	
}