added new cabac value

MediaBrowser.Server.Implementations/Connect/Validator.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Text.RegularExpressions;
+using System.Threading.Tasks;
+
+namespace MediaBrowser.Server.Implementations.Connect
+{
+    public static class Validator
+    {
+        static Regex ValidEmailRegex = CreateValidEmailRegex();
+
+        /// <summary>
+        /// Taken from http://haacked.com/archive/2007/08/21/i-knew-how-to-validate-an-email-address-until-i.aspx
+        /// </summary>
+        /// <returns></returns>
+        private static Regex CreateValidEmailRegex()
+        {
+            string validEmailPattern = @"^(?!\.)(""([^""\r\\]|\\[""\r\\])*""|"
+                + @"([-a-z0-9!#$%&'*+/=?^_`{|}~]|(?<!\.)\.)*)(?<!\.)"
+                + @"@[a-z0-9][\w\.-]*[a-z0-9]\.[a-z][a-z\.]*[a-z]$";
+
+            return new Regex(validEmailPattern, RegexOptions.IgnoreCase);
+        }
+
+        internal static bool EmailIsValid(string emailAddress)
+        {
+            bool isValid = ValidEmailRegex.IsMatch(emailAddress);
+
+            return isValid;
+        }
+    }
+}