HaitiPasswordValidation.java

/**
* The contents of this file are subject to the Mozilla Public License
* Version 1.1 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/ 
* 
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
* License for the specific language governing rights and limitations under
* the License.
* 
* The Original Code is OpenELIS code.
* 
* Copyright (C) The Minnesota Department of Health.  All Rights Reserved.
*
* Contributor(s): CIRG, University of Washington, Seattle WA.
*/
package us.mn.state.health.lims.common.provider.validation;

import org.apache.commons.validator.GenericValidator;
import us.mn.state.health.lims.common.util.StringUtil;

import java.util.regex.Pattern;

public class HaitiPasswordValidation implements ILoginPasswordValidation {

	/* Current Haiti requirements
	 * 	# Password must:be at least 7 characters long
	 *	# contain only upper or lower case characters
	 *	# numbers
	 *	# must have at least one of the following characters (*,$,#,!)
	 *
	 */
	
	private static final Pattern NEGATION_Of_MUST_ONLY_CONTAIN = Pattern.compile("[^\\w*$#!]");
	private static final Pattern SPECIAL_CHARS = Pattern.compile("[*$#!]+");

	public boolean passwordValid(String password) {
		//make sure it is long enough and
		//make sure it only contains the characters we want and 
		//make sure it contains at least one special character
		
		return !GenericValidator.isBlankOrNull(password) &&
			   password.length() >= 7 &&
			   !NEGATION_Of_MUST_ONLY_CONTAIN.matcher(password).find() &&	
			   SPECIAL_CHARS.matcher(password).find();
	}

	public String getInstructions() {
		return StringUtil.getMessageForKey("login.complexity.message");
	}
}