X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/449d082fcc4873c1f7d363a0d9f7409be7f6e77d..b22765f41bf0b2021b9beb9120ee0ac91fa89292:/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 516a3e25..efd26bbc 100644
--- a/wp-admin/js/password-strength-meter.js
+++ b/wp-admin/js/password-strength-meter.js
@@ -1,23 +1,80 @@
-// 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;
+			if ( 'undefined' === typeof window.zxcvbn ) {
+				// Password strength unknown.
+				return -1;
+			}
 
-	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;
+			var result = zxcvbn( password1, blacklist );
+			return result.score;
+		},
 
-	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
+		/**
+		 * 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);