CompletePasswordValidator.java

/**
 *  OpenKM, Open Document Management System (http://www.openkm.com)
 *  Copyright (c) 2006-2011  Paco Avila & Josep Llort
 *
 *  No bytes were intentionally harmed during the development of this application.
 *
 *  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 com.openkm.validator.password;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.openkm.core.Config;
import com.openkm.validator.ValidatorException;

/**
 * Complex password validator
 */
public class CompletePasswordValidator implements PasswordValidator {
	@SuppressWarnings("unused")
	private static Logger log = LoggerFactory.getLogger(CompletePasswordValidator.class);
		
	@Override
	public void Validate(String password) throws ValidatorException {
		validateLength(password);
		checkLowerCase(password);
		checkUpperCase(password);
		checkDigits(password);
		checkSpecial(password);
	}
	
	/**
	 * Validate length
	 */
	private void validateLength(String password) throws ValidatorException {
		if (Config.VALIDATOR_PASSWORD_MIN_LENGTH > 0 && 
				password.length() < Config.VALIDATOR_PASSWORD_MIN_LENGTH) {
			throw new ValidatorException(Config.VALIDATOR_PASSWORD_ERROR_MIN_LENGTH); 
		}
		
		if (Config.VALIDATOR_PASSWORD_MAX_LENGTH > 0 && 
				password.length() > Config.VALIDATOR_PASSWORD_MAX_LENGTH) {
			throw new ValidatorException(Config.VALIDATOR_PASSWORD_ERROR_MAX_LENGTH); 
		}
	}
	
	/**
	 * Validate lowercase characters
	 */
	private void checkLowerCase(String password) throws ValidatorException {
		int count = 0;
		
		if (Config.VALIDATOR_PASSWORD_MIN_LOWERCASE > 0) {
			for (int i=0; i<password.length(); i++) {
				if (Character.isLowerCase(password.charAt(i))) {
					count ++;
				}
			}
			
			if (Config.VALIDATOR_PASSWORD_MIN_LOWERCASE > count) {
				throw new ValidatorException(Config.VALIDATOR_PASSWORD_ERROR_MIN_LOWERCASE); 
			}
		}
	}
	
	/**
	 * Validate uppercase characters
	 */
	private void checkUpperCase(String password) throws ValidatorException {
		int count = 0;
		
		if (Config.VALIDATOR_PASSWORD_MIN_UPPERCASE > 0) {
			for (int i=0; i<password.length(); i++) {
				if (Character.isUpperCase(password.charAt(i))) {
					count ++;
				}
			}
			
			if (Config.VALIDATOR_PASSWORD_MIN_UPPERCASE > count) {
				throw new ValidatorException(Config.VALIDATOR_PASSWORD_ERROR_MIN_UPPERCASE); 
			}
		}
	}
	
	/**
	 * Validate digits
	 */
	private void checkDigits(String password) throws ValidatorException {
		int count = 0;
		
		if (Config.VALIDATOR_PASSWORD_MIN_DIGITS > 0) {
			for (int i=0; i<password.length(); i++) {
				if (Character.isDigit(password.charAt(i))) {
					count ++;
				}
			}
			
			if (Config.VALIDATOR_PASSWORD_MIN_DIGITS > count) {
				throw new ValidatorException(Config.VALIDATOR_PASSWORD_ERROR_MIN_DIGITS); 
			}
		}
	}
	
	/**
	 * Validate special characters
	 */
	private void checkSpecial(String password) throws ValidatorException {
		int count = 0;
		
		if (Config.VALIDATOR_PASSWORD_MIN_SPECIAL > 0) {
			for (int i=0; i<password.length(); i++) {
				if (!Character.isLetterOrDigit(password.charAt(i)) &&
						!Character.isWhitespace(password.charAt(i))) {
					count ++;
				}
			}
			
			if (Config.VALIDATOR_PASSWORD_MIN_SPECIAL > count) {
				throw new ValidatorException(Config.VALIDATOR_PASSWORD_ERROR_MIN_SPECIAL); 
			}
		}
	}
}