// A password quality meter
// Written by Gerd Riesselmann
// http://www.gerd-riesselmann.net
//
// 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.
//
// This program uses code from mozilla.org (http://mozilla.org)

// On start up, initialize the qualiy meter

addEvent(window, "load", initQualityMeter);

//init 
function initQualityMeter()
{

    var _pwd = document.getElementById('ctl00$ContentPlaceHolder1$newpwd1');
    if (_pwd)
    {
        addEvent(_pwd, "keypress", updateQualityMeter);
        //initProgressBar("Password Quality: ");
        updateQualityMeter();
    }
}


function updateQualityMeter()
{
    var quality = getPasswordStrength();

    setProgressBarValue(quality);
}

// Function taken from Mozilla Code:
// http://lxr.mozilla.org/seamonkey/source/security/manager/pki/resources/content/password.js
function getPasswordStrength()
{
    // Here is how we weigh the quality of the password
    // number of characters
    // numbers
    // non-alpha-numeric chars
    // upper and lower case characters

   var pw = document.getElementById('ctl00_ContentPlaceHolder1_newpwd1').value;
      //alert("password='" + pw +"'");

    //length of the password
    var pwlength=(pw.length);
    if (pwlength>5)
        pwlength=5;


    //use of numbers in the password
    var numnumeric = pw.replace (/[0-9]/g, "");
    var numeric=(pw.length - numnumeric.length);
    if (numeric>3)
        numeric=3;

    //use of symbols in the password
    var symbols = pw.replace (/\W/g, "");
    var numsymbols=(pw.length - symbols.length);
    if (numsymbols>3)
        numsymbols=3;

    //use of uppercase in the password
    var numupper = pw.replace (/[A-Z]/g, "");
    var upper=(pw.length - numupper.length);
    if (upper>3)
        upper=3;


    var pwstrength=((pwlength*10)-20) + (numeric*10) + (numsymbols*15) + (upper*10);

    // make sure we're give a value between 0 and 100
    if ( pwstrength < 0 ) {
        pwstrength = 0;
    }

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

    return pwstrength;
}