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msd2/wordpress/wp-admin/js/password-strength-meter.js

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+/**
+ * @output wp-admin/js/password-strength-meter.js
+ */
+
+/* global zxcvbn */
+window.wp = window.wp || {};
+
+(function($){
+
+	/**
+	 * Contains functions to determine the password strength.
+	 *
+	 * @since 3.7.0
+	 *
+	 * @namespace
+	 */
+	wp.passwordStrength = {
+		/**
+		 * Determines the strength of a given password.
+		 *
+		 * Compares first password to the password confirmation.
+		 *
+		 * @since 3.7.0
+		 *
+		 * @param {string} password1 The subject password.
+		 * @param {Array}  blacklist An array of words that will lower the entropy of
+		 *                           the password.
+		 * @param {string} password2 The password confirmation.
+		 *
+		 * @returns {number} The password strength score.
+		 */
+		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 words that should be penalized.
+		 *
+		 * Certain words need to be penalized because it would lower the entropy of a
+		 * password if they were used. The blacklist is based on user input fields such
+		 * as username, first name, email etc.
+		 *
+		 * @since 3.7.0
+		 *
+		 * @returns {string[]} The array of words 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;
+		}
+	};
+
+	// Backward compatibility.
+
+	/**
+	 * Password strength meter function.
+	 *
+	 * @since 2.5.0
+	 * @deprecated 3.7.0 Use wp.passwordStrength.meter instead.
+	 *
+	 * @global
+	 *
+	 * @type {wp.passwordStrength.meter}
+	 */
+	window.passwordStrength = wp.passwordStrength.meter;
+})(jQuery);