/* ************************************************************
 Created: 20060120
 Author:  Steve Moitozo <god at zilla dot us> -- geekwisdom.com
 Description: This is a quick and dirty password quality meter
 written in JavaScript so that the password does
 not pass over the network.
 License: MIT License (see below)
 Modified: 20060620 - added MIT License
 Modified: 20061111 - corrected regex for letters and numbers
 Thanks to Zack Smith -- zacksmithdesign.com
 ---------------------------------------------------------------
 Copyright (c) 2006 Steve Moitozo <god at zilla dot us>
 Permission is hereby granted, free of charge, to any person
 obtaining a copy of this software and associated documentation
 files (the "Software"), to deal in the Software without
 restriction, including without limitation the rights to use,
 copy, modify, merge, publish, distribute, sublicense, and/or
 sell copies of the Software, and to permit persons to whom the
 Software is furnished to do so, subject to the following
 conditions:
 The above copyright notice and this permission notice shall
 be included in all copies or substantial portions of the
 Software.
 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
 KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
 WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
 AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
 OR OTHER DEALINGS IN THE SOFTWARE.
 ---------------------------------------------------------------
 Password Strength Factors and Weightings
 password length:
 level 0 (3 point): less than 4 characters
 level 1 (6 points): between 5 and 7 characters
 level 2 (12 points): between 8 and 15 characters
 level 3 (18 points): 16 or more characters
 letters:
 level 0 (0 points): no letters
 level 1 (5 points): all letters are lower case
 level 2 (7 points): letters are mixed case
 numbers:
 level 0 (0 points): no numbers exist
 level 1 (5 points): one number exists
 level 1 (7 points): 3 or more numbers exists
 special characters:
 level 0 (0 points): no special characters
 level 1 (5 points): one special character exists
 level 2 (10 points): more than one special character exists
 combinatons:
 level 0 (1 points): letters and numbers exist
 level 1 (1 points): mixed case letters
 level 1 (2 points): letters, numbers and special characters
 exist
 level 1 (2 points): mixed case letters, numbers and special
 characters exist
 NOTE: Because I suck at regex the code might need work
 
 NOTE: Instead of putting out all the logging information,
 the score, and the verdict it would be nicer to stretch
 a graphic as a method of presenting a visual strength
 guage.
 ************************************************************ */
function testPassword(passwd){
    var intScore = 0
    var strVerdict = "weak"
    var strLog = ""
    
    // PASSWORD LENGTH
    if (passwd.length < 5) // length 4 or less
    {
        intScore = (intScore + 3);
        strLog = strLog + "3 points for length (" + passwd.length + ")\n";
    }
    else 
        if (passwd.length > 4 && passwd.length < 8) // length between 5 and 7
        {
            intScore = (intScore + 6);
            strLog = strLog + "6 points for length (" + passwd.length + ")\n";
        }
        else 
            if (passwd.length > 7 && passwd.length < 16)// length between 8 and 15
            {
                intScore = (intScore + 12);
                strLog = strLog + "12 points for length (" + passwd.length + ")\n";
            }
            else 
                if (passwd.length > 15) // length 16 or more
                {
                    intScore = (intScore + 18);
                    strLog = strLog + "18 point for length (" + passwd.length + ")\n";
                }
    
    
    // LETTERS (Not exactly implemented as dictacted above because of my limited understanding of Regex)
    if (passwd.match(/[a-z]/)) // [verified] at least one lower case letter
    {
        intScore = (intScore + 1);
        strLog = strLog + "1 point for at least one lower case char\n";
    }
    
    if (passwd.match(/[A-Z]/)) // [verified] at least one upper case letter
    {
        intScore = (intScore + 5);
        strLog = strLog + "5 points for at least one upper case char\n";
    }
    
    // NUMBERS
    if (passwd.match(/\d+/)) // [verified] at least one number
    {
        intScore = (intScore + 5);
        strLog = strLog + "5 points for at least one number\n";
    }
    
    if (passwd.match(/(.*[0-9].*[0-9].*[0-9])/)) // [verified] at least three numbers
    {
        intScore = (intScore + 5);
        strLog = strLog + "5 points for at least three numbers\n";
    }
    
    
    // SPECIAL CHAR
    if (passwd.match(/.[!,@,#,$,%,^,&,*,?,_,~]/)) // [verified] at least one special character
    {
        intScore = (intScore + 5);
        strLog = strLog + "5 points for at least one special char\n";
    }
    
    // [verified] at least two special characters
    if (passwd.match(/(.*[!,@,#,$,%,^,&,*,?,_,~].*[!,@,#,$,%,^,&,*,?,_,~])/)) {
        intScore = (intScore + 5);
        strLog = strLog + "5 points for at least two special chars\n";
    }
    
    
    // COMBOS
    if (passwd.match(/([a-z].*[A-Z])|([A-Z].*[a-z])/)) // [verified] both upper and lower case
    {
        intScore = (intScore + 2);
        strLog = strLog + "2 combo points for upper and lower letters\n";
    }
    
    if (passwd.match(/([a-zA-Z])/) && passwd.match(/([0-9])/)) // [verified] both letters and numbers
    {
        intScore = (intScore + 2);
        strLog = strLog + "2 combo points for letters and numbers\n";
    }
    
    // [verified] letters, numbers, and special characters
    if (passwd.match(/([a-zA-Z0-9].*[!,@,#,$,%,^,&,*,?,_,~])|([!,@,#,$,%,^,&,*,?,_,~].*[a-zA-Z0-9])/)) {
        intScore = (intScore + 2);
        strLog = strLog + "2 combo points for letters, numbers and special chars\n";
    }
    
	var px = Math.round(intScore * 8);
	if (px > 190)
		px = 190;
    document.getElementById('passwordmeter').style.backgroundPosition = (px * -1) + "px 0px";
   
}