cirandas.net

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// This jQuery plugin is written by firas kassem [2007.04.05] and was modified to fit noosfero
// Firas Kassem  phiras.wordpress.com || phiras at gmail {dot} com
// for more information : http://phiras.wordpress.com/2007/04/08/password-strength-meter-a-jquery-plugin/

var blankPass    = -1
var shortPass   = 0
var badPass     = 1
var goodPass    = 2
var strongPass  = 3


function passwordStrength(password,username)
{
  score = 0

  if(password.length == 0) return blankPass

  //password < 4
  if (password.length < 4 ) { return shortPass }

  //password == username
  if (password.toLowerCase()==username.toLowerCase()) badPass

  //password length
  score += password.length * 4
  score += ( checkRepetition(1,password).length - password.length ) * 1
  score += ( checkRepetition(2,password).length - password.length ) * 1
  score += ( checkRepetition(3,password).length - password.length ) * 1
  score += ( 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 sybols
  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 nubers or chars
  if (password.match(/^\w+$/) || password.match(/^\d+$/) )  score -= 10

  //verifing 0 < score < 100
  if ( score < 0 )  score = 0
  if ( score > 100 )  score = 100

  if (score < 34 )  return badPass
  if (score < 68 )  return goodPass
  return strongPass
}

function checkRepetition(pLen,str)
{
  res = ""
  for ( i=0; i<str.length ; i++ )
  {
      repeated=true
      for (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
}

jQuery(document).ready(function() {
    jQuery('#user_pw').keyup(function()
    {
      var result = passwordStrength(jQuery('#user_pw').val(),jQuery('#user_login').val())
      if(result == blankPass)
      {
        showRateField('#result-blank')
      } else
      if(result == shortPass)
      {
        showRateField('#result-short')
      } else
      if( result == badPass )
      {
        showRateField('#result-bad')
      } else
      if( result == goodPass )
      {
        showRateField('#result-good')
      } else
      if( result == strongPass )
      {
        showRateField('#result-strong')
      }

    })
})

function showRateField(validation)
{
  jQuery('#result-blank').addClass('hidden')
  jQuery('#result-short').addClass('hidden')
  jQuery('#result-bad').addClass('hidden')
  jQuery('#result-good').addClass('hidden')
  jQuery('#result-strong').addClass('hidden')

  jQuery(validation).removeClass('hidden')

}