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/* global zxcvbn */
window.wp = window.wp || {};
var passwordStrength;
(function($){
wp.passwordStrength = {
/**
* Determine the strength of a given password
*
* @param string password1 The password
* @param array blacklist An array of words that will lower the entropy of the password
* @param string password2 The confirmed password
*/
meter : function( password1, blacklist, password2 ) {
if ( ! $.isArray( blacklist ) )
blacklist = [ blacklist.toString() ];
if (password1 != password2 && password2 && password2.length > 0)
return 5;
if ( 'undefined' === typeof window.zxcvbn ) {
// Password strength unknown.
return -1;
}
var result = zxcvbn( password1, blacklist );
return result.score;
},
/**
* Builds an array of data that should be penalized, because it would lower the entropy of a password if it were used
*
* @return array The array of data to be blacklisted
*/
userInputBlacklist : function() {
var i, userInputFieldsLength, rawValuesLength, currentField,
rawValues = [],
blacklist = [],
userInputFields = [ 'user_login', 'first_name', 'last_name', 'nickname', 'display_name', 'email', 'url', 'description', 'weblog_title', 'admin_email' ];
// Collect all the strings we want to blacklist
rawValues.push( document.title );
rawValues.push( document.URL );
userInputFieldsLength = userInputFields.length;
for ( i = 0; i < userInputFieldsLength; i++ ) {
currentField = $( '#' + userInputFields[ i ] );
if ( 0 === currentField.length ) {
continue;
}
rawValues.push( currentField[0].defaultValue );
rawValues.push( currentField.val() );
}
// Strip out non-alphanumeric characters and convert each word to an individual entry
rawValuesLength = rawValues.length;
for ( i = 0; i < rawValuesLength; i++ ) {
if ( rawValues[ i ] ) {
blacklist = blacklist.concat( rawValues[ i ].replace( /\W/g, ' ' ).split( ' ' ) );
}
}
// Remove empty values, short words, and duplicates. Short words are likely to cause many false positives.
blacklist = $.grep( blacklist, function( value, key ) {
if ( '' === value || 4 > value.length ) {
return false;
}
return $.inArray( value, blacklist ) === key;
});
return blacklist;
}
};
// Back-compat.
passwordStrength = wp.passwordStrength.meter;
})(jQuery);
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