/**

 * password_strength_plugin.js

 * Copyright (c) 2009 myPocket technologies (www.mypocket-technologies.com)

 

 * 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 3 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.



 * View the GNU General Public License <http://www.gnu.org/licenses/>.



 * @author Darren Mason (djmason9@gmail.com)

 * @date 3/13/2009

 * @projectDescription Password Strength Meter is a jQuery plug-in provide you smart algorithm to detect a password strength. Based on Firas Kassem orginal plugin - http://phiras.wordpress.com/2007/04/08/password-strength-meter-a-jquery-plugin/

 * @version 1.0.1

 * 

 * @requires jquery.js (tested with 1.3.2)

 * @param shortPass:	"shortPass",	//optional

 * @param badPass:		"badPass",		//optional

 * @param goodPass:		"goodPass",		//optional

 * @param strongPass:	"strongPass",	//optional

 * @param baseStyle:	"testresult",	//optional

 * @param userid:		"",				//required override

 * @param messageloc:	1				//before == 0 or after == 1

 * 

*/



(function($){ 

	$.fn.shortPass = 'Viel zu Kurz';

	$.fn.badPass = 'Sicher ist was anderes, ein gutes Passwort hat Buchstaben und Zahlen';

	$.fn.goodPass = 'Schon viel besser, Wenn du ganz Sicher sein willst, dann benutze auch Sonderzeichen';

	$.fn.strongPass = 'Besser geht`s nicht, dass nenn ich mal einen Kryptprofi, kannst du dir das Passwort noch merken?';

	$.fn.samePassword = 'HaHa, wir haben wohl einen Clown gefressen, nimm was anderes als deinen Benutzernamen';

	$.fn.resultStyle = "";

	

	 $.fn.passStrength = function(options) {  

	  

		 var defaults = {

				shortPass: 		"shortPass",	//optional

				badPass:		"badPass",		//optional

				goodPass:		"goodPass",		//optional

				strongPass:		"strongPass",	//optional

				baseStyle:		"testresult",	//optional

				userid:			"",				//required override

				messageloc:		1				//before == 0 or after == 1

			}; 

		 	var opts = $.extend(defaults, options);  

		      

		 	return this.each(function() { 

		 		 var obj = $(this);

		 		

		 		$(obj).unbind().keyup(function()

		 		{

					

					var results = $.fn.teststrength($(this).val(),$(opts.userid).val(),opts);

					

					if(opts.messageloc === 1)

					{

						$(this).next("." + opts.baseStyle).remove();

						$(this).after("<span class=\""+opts.baseStyle+"\"><span></span></span>");

						$(this).next("." + opts.baseStyle).addClass($(this).resultStyle).find("span").text(results);

					}

					else

					{

						$(this).prev("." + opts.baseStyle).remove();

						$(this).before("<span class=\""+opts.baseStyle+"\"><span></span></span>");

						$(this).prev("." + opts.baseStyle).addClass($(this).resultStyle).find("span").text(results);

					}

		 		 });

		 		 

		 		//FUNCTIONS

		 		$.fn.teststrength = function(password,username,option){

		 			 	var score = 0; 

		 			    

		 			    //password < 4

		 			    if (password.length < 4 ) { this.resultStyle =  option.shortPass;return $(this).shortPass; }

		 			    

		 			    //password == user name

		 			    if (password.toLowerCase()==username.toLowerCase()){this.resultStyle = option.badPass;return $(this).samePassword;}

		 			    

		 			    //password length

		 			    score += password.length * 4;

		 			    score += ( $.fn.checkRepetition(1,password).length - password.length ) * 1;

		 			    score += ( $.fn.checkRepetition(2,password).length - password.length ) * 1;

		 			    score += ( $.fn.checkRepetition(3,password).length - password.length ) * 1;

		 			    score += ( $.fn.checkRepetition(4,password).length - password.length ) * 1;

		 	

		 			    //password has 3 numbers

		 			    if (password.match(/(.*[0-9].*[0-9].*[0-9])/)){ score += 5;} 

		 			    

		 			    //password has 2 symbols

		 			    if (password.match(/(.*[!,@,#,$,%,^,&,*,?,_,~].*[!,@,#,$,%,^,&,*,?,_,~])/)){ score += 5 ;}

		 			    

		 			    //password has Upper and Lower chars

		 			    if (password.match(/([a-z].*[A-Z])|([A-Z].*[a-z])/)){  score += 10;} 

		 			    

		 			    //password has number and chars

		 			    if (password.match(/([a-zA-Z])/) && password.match(/([0-9])/)){  score += 15;} 

		 			    //

		 			    //password has number and symbol

		 			    if (password.match(/([!,@,#,$,%,^,&,*,?,_,~])/) && password.match(/([0-9])/)){  score += 15;} 

		 			    

		 			    //password has char and symbol

		 			    if (password.match(/([!,@,#,$,%,^,&,*,?,_,~])/) && password.match(/([a-zA-Z])/)){score += 15;}

		 			    

		 			    //password is just a numbers or chars

		 			    if (password.match(/^\w+$/) || password.match(/^\d+$/) ){ score -= 10;}

		 			    

		 			    //verifying 0 < score < 100

		 			    if ( score < 0 ){score = 0;} 

		 			    if ( score > 100 ){  score = 100;} 

		 			    

		 			    if (score < 34 ){ this.resultStyle = option.badPass; return $(this).badPass;} 

		 			    if (score < 68 ){ this.resultStyle = option.goodPass;return $(this).goodPass;}

		 			    

		 			   this.resultStyle= option.strongPass;

		 			    return $(this).strongPass;

		 			    

		 		};

		  

		  });  

	 };  

})(jQuery); 





$.fn.checkRepetition = function(pLen,str) {

 	var res = "";

     for (var i=0; i<str.length ; i++ ) 

     {

         var repeated=true;

         

         for (var j=0;j < pLen && (j+i+pLen) < str.length;j++){

             repeated=repeated && (str.charAt(j+i)==str.charAt(j+i+pLen));

             }

         if (j<pLen){repeated=false;}

         if (repeated) {

             i+=pLen-1;

             repeated=false;

         }

         else {

             res+=str.charAt(i);

         }

     }

     return res;

	};