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/**
* jQuery Form Validator Module: Security
* ------------------------------------------
* Created by Victor Jonsson <http://victorjonsson.se>
*
* This module adds validators typically used in registration forms.
* This module adds the following validators:
* - spamcheck
* - confirmation
* - strength
* - backend
* - credit card
* - cvv
*
* @website http://formvalidator.net/#security-validators
* @version 2.1.66
*/
(function($, window) {
'use strict';
/*
* Simple spam check
*/
$.formUtils.addValidator({
name : 'spamcheck',
validatorFunction : function(val, $el, config) {
var attr = $el.valAttr('captcha');
return attr === val;
},
errorMessage : '',
errorMessageKey: 'badSecurityAnswer'
});
/*
* Validate confirmation
*/
$.formUtils.addValidator({
name : 'confirmation',
validatorFunction : function(value, $el, config, language, $form) {
var conf = '',
confInputName = $el.valAttr('confirm') || ($el.attr('name') + '_confirmation'),
confInput = $form.find('input[name="' +confInputName+ '"]').eq(0);
if (confInput) {
conf = confInput.val();
} else {
console.warn('Could not find an input with name "'+confInputName+'"');
}
return value === conf;
},
errorMessage : '',
errorMessageKey: 'notConfirmed'
});
/*
* Credit card
*/
$.formUtils.addValidator({
name : 'creditcard',
validatorFunction : function(value, $el, config, language, $form) {
var cards = {
'amex' : [15,15],
'diners_club' : [14,14],
'cjb' : [16,16],
'laser' : [16,19],
'visa' : [16,16],
'mastercard' : [16,16],
'maestro' : [12,19],
'discover' : [16,16]
},
allowing = $.split( $el.valAttr('allowing') || '' );
// Correct length
if( allowing.length > 0 ) {
var hasValidLength = false;
$.each(allowing, function(i, cardName) {
if( cardName in cards) {
if( value.length >= cards[cardName][0] && value.length <= cards[cardName][1]) {
hasValidLength = true;
return false;
}
} else {
console.warn('Use of unknown credit card "'+cardName+'"');
}
});
if( !hasValidLength )
return false;
}
// only numbers
if( value.replace(new RegExp('[0-9]', 'g'), '') !== '' ) {
return false
}
// http://en.wikipedia.org/wiki/Luhn_algorithm
// http://www.brainjar.com/js/validation/default2.asp
var checkSum = 0;
$.each(value.split('').reverse(), function(i, digit) {
digit = parseInt(digit, 10);
if( i%2 === 0 ) {
checkSum += digit;
} else {
digit *= 2;
if (digit < 10) {
checkSum += digit;
} else {
checkSum += digit - 9;
}
}
});
return checkSum % 10 === 0;
},
errorMessage : '',
errorMessageKey: 'badCreditCard'
});
/*
* Credit card number
*/
$.formUtils.addValidator({
name : 'cvv',
validatorFunction : function(val) {
return val.replace(/[0-9]/g, '') === '' && (val + '').length == 3;
},
errorMessage : '',
errorMessageKey: 'badCVV'
});
/*
* Validate password strength
*/
$.formUtils.addValidator({
name : 'strength',
validatorFunction : function(val, $el, conf) {
var requiredStrength = $el.valAttr('strength')
if(requiredStrength && requiredStrength > 3)
requiredStrength = 3;
return $.formUtils.validators.validate_strength.calculatePasswordStrength(val) >= requiredStrength;
},
errorMessage : '',
errorMessageKey: 'badStrength',
/**
* Code more or less borrowed from jQuery plugin "Password Strength Meter"
* written by Darren Mason (djmason9@gmail.com), myPocket technologies (www.mypocket-technologies.com)
* @param {String} password
* @return {Number}
*/
calculatePasswordStrength : function(password) {
if (password.length < 4) {
return 0;
}
var score = 0;
var checkRepetition = function (pLen, str) {
var res = "";
for (var i = 0; i < str.length; i++) {
var repeated = true;
for (var j = 0; j < pLen && (j + i + pLen) < str.length; j++) {
repeated = repeated && (str.charAt(j + i) == str.charAt(j + i + pLen));
}
if (j < pLen) {
repeated = false;
}
if (repeated) {
i += pLen - 1;
repeated = false;
}
else {
res += str.charAt(i);
}
}
return res;
};
//password length
score += password.length * 4;
score += ( checkRepetition(1, password).length - password.length ) * 1;
score += ( checkRepetition(2, password).length - password.length ) * 1;
score += ( checkRepetition(3, password).length - password.length ) * 1;
score += ( checkRepetition(4, password).length - password.length ) * 1;
//password has 3 numbers
if (password.match(/(.*[0-9].*[0-9].*[0-9])/)) {
score += 5;
}
//password has 2 symbols
if (password.match(/(.*[!,@,#,$,%,^,&,*,?,_,~].*[!,@,#,$,%,^,&,*,?,_,~])/)) {
score += 5;
}
//password has Upper and Lower chars
if (password.match(/([a-z].*[A-Z])|([A-Z].*[a-z])/)) {
score += 10;
}
//password has number and chars
if (password.match(/([a-zA-Z])/) && password.match(/([0-9])/)) {
score += 15;
}
//
//password has number and symbol
if (password.match(/([!,@,#,$,%,^,&,*,?,_,~])/) && 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+$/)) {
score -= 10;
}
//verifying 0 < score < 100
if (score < 0) {
score = 0;
}
if (score > 100) {
score = 100;
}
if (score < 20) {
return 0;
}
else if (score < 40) {
return 1;
}
else if(score <= 60) {
return 2;
}
else {
return 3;
}
},
strengthDisplay : function($el, options) {
var config = {
fontSize: '12pt',
padding: '4px',
bad : 'Very bad',
weak : 'Weak',
good : 'Good',
strong : 'Strong'
};
if (options) {
$.extend(config, options);
}
$el.bind('keyup', function() {
var val = $(this).val();
var $parent = typeof config.parent == 'undefined' ? $(this).parent() : $(config.parent);
var $displayContainer = $parent.find('.strength-meter');
if($displayContainer.length == 0) {
$displayContainer = $('<span></span>');
$displayContainer
.addClass('strength-meter')
.appendTo($parent);
}
if( !val ) {
$displayContainer.hide();
} else {
$displayContainer.show();
}
var strength = $.formUtils.validators.validate_strength.calculatePasswordStrength(val);
var css = {
background: 'pink',
color : '#FF0000',
fontWeight : 'bold',
border : 'red solid 1px',
borderWidth : '0px 0px 4px',
display : 'inline-block',
fontSize : config.fontSize,
padding : config.padding
};
var text = config.bad;
if(strength == 1) {
text = config.weak;
}
else if(strength == 2) {
css.background = 'lightyellow';
css.borderColor = 'yellow';
css.color = 'goldenrod';
text = config.good;
}
else if(strength >= 3) {
css.background = 'lightgreen';
css.borderColor = 'darkgreen';
css.color = 'darkgreen';
text = config.strong;
}
$displayContainer
.css(css)
.text(text);
});
}
});
var requestServer = function(serverURL, $element, val, conf, callback) {
$.ajax({
url : serverURL,
type : 'POST',
cache : false,
data : $element.attr('name')+'='+val,
dataType : 'json',
error : function(error) {
alert('Server validation failed due to: '+error.statusText);
if( window.JSON && window.JSON.stringify ) {
alert(window.JSON.stringify(error));
}
},
success : function(response) {
if(response.valid) {
$element.valAttr('backend-valid', 'true');
}
else {
$element.valAttr('backend-invalid', 'true');
if(response.message)
$element.attr(conf.validationErrorMsgAttribute, response.message);
else
$element.removeAttr(conf.validationErrorMsgAttribute);
}
if( !$element.valAttr('has-keyup-event') ) {
$element
.valAttr('has-keyup-event', '1')
.bind('keyup', function(evt) {
if( evt.keyCode != 9 && evt.keyCode != 16 ) {
$(this)
.valAttr('backend-valid', false)
.valAttr('backend-invalid', false)
.removeAttr(conf.validationErrorMsgAttribute);
}
});
}
callback();
}
});
},
disableFormSubmit = function() {
return false;
};
/*
* Server validation
* Flow (form submission):
* 1) Check if the value already has been validated on the server. If so, display the validation
* result and continue the validation process, otherwise continue to step 2
* 2) Return false as if the value is invalid and set $.formUtils.haltValidation to true
* 3) Disable form submission on the form being validated
* 4) Request the server with value and input name and add class 'validating-server-side' to the form
* 5) When the server responds an attribute will be added to the element
* telling the validator that the input has a valid/invalid value and enable form submission
* 6) Run form submission again (back to step 1)
*/
$.formUtils.addValidator({
name : 'server',
validatorFunction : function(val, $el, conf, lang, $form) {
var backendValid = $el.valAttr('backend-valid'),
backendInvalid = $el.valAttr('backend-invalid'),
serverURL = document.location.href;
if($el.valAttr('url')) {
serverURL = $el.valAttr('url');
} else if('serverURL' in conf) {
serverURL = conf.backendUrl;
}
if(backendValid)
return true;
else if(backendInvalid)
return false;
if($.formUtils.isValidatingEntireForm) {
$form
.bind('submit', disableFormSubmit)
.addClass('validating-server-side')
.addClass('on-blur');
$el.addClass('validating-server-side');
requestServer(serverURL, $el, val, conf, function() {
$form
.removeClass('validating-server-side')
.removeClass('on-blur')
.get(0).onsubmit = function() {};
$form.unbind('submit', disableFormSubmit);
$el.removeClass('validating-server-side');
// fire submission again!
$form.trigger('submit');
});
$.formUtils.haltValidation = true;
return false;
} else {
// validaiton on blur
$form.addClass('validating-server-side');
$el.addClass('validating-server-side');
requestServer(serverURL, $el, val, conf, function() {
$form.removeClass('validating-server-side');
$el.removeClass('validating-server-side');
$el.trigger('blur');
});
return true;
}
},
errorMessage : '',
errorMessageKey: 'badBackend',
validateOnKeyUp : false
});
$.fn.displayPasswordStrength = function(conf) {
new $.formUtils.validators.validate_strength.strengthDisplay(this, conf);
return this;
};
})(jQuery, window);