WordPress 4.0.1

[autoinstalls/wordpress.git] / wp-admin / js / password-strength-meter.js

diff --git a/wp-admin/js/password-strength-meter.js b/wp-admin/js/password-strength-meter.js
index 516a3e25110f269add2cca32fd907756eba1a023..a075c269f8dfd64e3f350fb21ba3271979982264 100644 (file)
--- a/wp-admin/js/password-strength-meter.js
+++ b/wp-admin/js/password-strength-meter.js
@@ -1,23 +1,75 @@
-// Password strength meter
+/* global zxcvbn */
+window.wp = window.wp || {};
 
-function passwordStrength(password,username) {
-    var shortPass = 1, badPass = 2, goodPass = 3, strongPass = 4;
+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() ];
 
-       //password < 4
-    if (password.length < 4 ) { return shortPass };
+                       if (password1 != password2 && password2 && password2.length > 0)
+                               return 5;
 
-    //password == username
-    if (password.toLowerCase()==username.toLowerCase()) return badPass;
+                       var result = zxcvbn( password1, blacklist );
+                       return result.score;
+               },
 
-       var symbolSize = 0;
-       if (password.match(/[0-9]/)) symbolSize +=10;
-       if (password.match(/[a-z]/)) symbolSize +=26;
-       if (password.match(/[A-Z]/)) symbolSize +=26;
-       if (password.match(/[^a-zA-Z0-9]/)) symbolSize +=31;
+               /**
+                * 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' ];
 
-       var natLog = Math.log( Math.pow(symbolSize,password.length) );
-       var score = natLog / Math.LN2;
-       if (score < 40 )  return badPass
-       if (score < 56 )  return goodPass
-    return strongPass;
-}
\ No newline at end of file
+                       // 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;
+               }
+       };
+
+       // Backwards compatibility.
+       passwordStrength = wp.passwordStrength.meter;
+})(jQuery);
\ No newline at end of file