/*
* jQuery Passy
* Generating and analazing passwords, realtime.
*
* Tim Severien
* http://timseverien.nl
*
* Copyright (c) 2013 Tim Severien
* Released under the GPLv2 license.
*
*/
(function($) {
var passy = {
character: { DIGIT: 1, LOWERCASE: 2, UPPERCASE: 4, PUNCTUATION: 8 },
strength: { LOW: 0, MEDIUM: 1, HIGH: 2, EXTREME: 3 },
dictionary: [],
patterns: [
'0123456789',
'abcdefghijklmnopqrstuvwxyz',
'qwertyuiopasdfghjklzxcvbnm',
'azertyuiopqsdfghjklmwxcvbn',
'!#$*+-.:?@^'
],
threshold: {
medium: 16,
high: 22,
extreme: 36
}
};
passy.requirements = {
characters: passy.character.DIGIT | passy.character.LOWERCASE | passy.character.UPPERCASE,
length: {
min: 6,
max: Infinity
}
};
if(Object.seal) {
Object.seal(passy.character);
Object.seal(passy.strength);
}
if(Object.freeze) {
Object.freeze(passy.character);
Object.freeze(passy.strength);
}
passy.analize = function(password) {
var score = Math.floor(password.length * 2);
var i = password.length;
score += $.passy.analizePatterns(password);
score += $.passy.analizeDictionary(password);
while(i--) score += $.passy.analizeCharacter(password.charAt(i));
return $.passy.analizeScore(score);
};
passy.analizeCharacter = function(character) {
var code = character.charCodeAt(0);
if(code >= 97 && code <= 122) return 1; // lower case
if(code >= 48 && code <= 57) return 2; // numeric
if(code >= 65 && code <= 90) return 3; // capital
if(code <= 126) return 4; // punctuation
return 5; // foreign characters etc
};
passy.analizePattern = function(password, pattern) {
var lastmatch = -1;
var score = -2;
for(var i = 0; i < password.length; i++) {
var match = pattern.indexOf(password.charAt(i));
if(lastmatch === match - 1) {
lastmatch = match;
score++;
}
}
return Math.max(0, score);
};
passy.analizePatterns = function(password) {
var chars = password.toLowerCase();
var score = 0;
for(var i in $.passy.patterns) {
var pattern = $.passy.patterns[i].toLowerCase();
score += $.passy.analizePattern(chars, pattern);
}
// patterns are bad man!
return score * -5;
};
passy.analizeDictionary = function(password) {
var chars = password.toLowerCase();
var score = 0;
for(var i in $.passy.dictionary) {
var word = $.passy.dictionary[i].toLowerCase();
if(password.indexOf(word) >= 0) score++;
}
// using words are bad too!
return score * -5;
};
passy.analizeScore = function(score) {
if(score >= $.passy.threshold.extreme) return $.passy.strength.EXTREME;
if(score >= $.passy.threshold.high) return $.passy.strength.HIGH;
if(score >= $.passy.threshold.medium) return $.passy.strength.MEDIUM;
return $.passy.strength.LOW;
};
passy.generate = function(len) {
var chars = [
'0123456789',
'abcdefghijklmnopqrstuvwxyz',
'ABCDEFGHIJKLMNOPQRSTUVWXYZ',
'!#$&()*+<=>@[]^'
];
var password = [];
var type, index;
len = Math.max(len, $.passy.requirements.length.min);
len = Math.min(len, $.passy.requirements.length.max);
while(len--) {
type = len % chars.length;
index = Math.floor(Math.random() * chars[type].length);
password.push(chars[type].charAt(index));
}
password.sort(function() {
return Math.random() * 2 - 1;
});
return password.join('');
};
passy.contains = function(str, character) {
if(character === $.passy.character.DIGIT) {
return /\d/.test(str);
} else if(character === $.passy.character.LOWERCASE) {
return /[a-z]/.test(str);
} else if(character === $.passy.character.UPPERCASE) {
return /[A-Z]/.test(str);
} else if(character === $.passy.character.PUNCTUATION) {
return /[!"#$%&'()*+,\-./:;<=>?@[\\]\^_`{\|}~]/.test(str);
}
};
passy.valid = function(str) {
var valid = true;
if(!$.passy.requirements) return true;
if(str.length < $.passy.requirements.length.min) return false;
if(str.length > $.passy.requirements.length.max) return false;
for(var i in $.passy.character) {
if($.passy.requirements.characters & $.passy.character[i]) {
valid = $.passy.contains(str, $.passy.character[i]) && valid;
}
}
return valid;
};
var methods = {
init: function(callback) {
var $this = $(this);
$this.on('change keyup', function() {
if(typeof callback !== 'function') return;
var value = $this.val();
callback.call($this, $.passy.analize(value), methods.valid.call($this));
});
},
generate: function(len) {
this.val($.passy.generate(len));
this.change();
},
valid: function() {
return $.passy.valid(this.val());
}
};
$.fn.passy = function(opt) {
if(methods[opt]) {
return methods[opt].apply(this, Array.prototype.slice.call(arguments, 1));
} else if (typeof opt === 'function' || !opt) {
return methods.init.apply(this, arguments);
}
return this;
};
$.extend({ passy: passy });
})(jQuery);