Add RequiredSslAttribute

Changelog.md

@@ -50,6 +50,12 @@ and serializes more cleanly. (Note: this affects only JSON output - not
 inbound JSON parsing. Since formatting differs slightly for some times - 
 namely dictionaries - you might not get two-way fidelity).
 
+* **Add RequireSslAttribute**
+<small>Westwind.Web.Mvc</small>
+Add RequireSslAttribute that allows to dynamically assign the flag
+that decides whether SSL is used. Use a configuration setting,
+a static 'delegate' method or an explicit constant bool value.
+
 * **JsonVariables Component**
 <small>Westwind.Web</small>
 Component that helps with embedding server side data into client side

Westwind.Web.Mvc/Filters/RequireSslAttribute.cs

@@ -0,0 +1,79 @@
+using System;
+using System.Configuration;
+using System.Reflection;
+using System.Web.Mvc;
+
+namespace Westwind.Web.Mvc
+{
+
+    /// <summary>
+    /// Allows for dynamically assigning the RequireSsl property at runtime
+    /// either with an explicit boolean constant, a configuration setting,
+    /// or a Reflection based 'delegate' 
+    /// </summary>
+    public class RequireSslAttribute : RequireHttpsAttribute
+    {
+        public bool RequireSsl { get; set; }
+
+
+        /// <summary>
+        /// Default constructor forces SSL required
+        /// </summary>
+        public RequireSslAttribute()
+        {
+            // Assign from App specific configuration object
+            RequireSsl = true;
+        }
+
+        /// <summary>
+        /// Allows assignment of the SSL status via parameter
+        /// </summary>
+        /// <param name="requireSsl"></param>
+        public RequireSslAttribute(bool requireSsl)
+        {
+            RequireSsl = requireSsl;
+        }
+
+        /// <summary>
+        /// Allows invoking a method at runtime to check for a 
+        /// value dynamically.
+        /// 
+        /// Note: The method called must be a static method
+        /// </summary>
+        /// <param name="typeName">Fully qualified type name on which the method to call exists</param>
+        /// <param name="method">Static method on this type to invoke with no parameters</param>
+        public RequireSslAttribute(Type type, string method)
+        {
+            var mi = type.GetMethod(method, BindingFlags.Static | BindingFlags.InvokeMethod | BindingFlags.Public);
+            RequireSsl = (bool)mi.Invoke(type, null);
+        }
+
+        /// <summary>
+        /// Looks for an appSetting key you specify and if it exists
+        /// and is set to true or 1 which forces SSL.
+        /// </summary>
+        /// <param name="appSettingsKey"></param>
+        public RequireSslAttribute(string appSettingsKey)
+        {
+            string key = ConfigurationManager.AppSettings[appSettingsKey] as string;
+            RequireSsl = false;
+            if (!string.IsNullOrEmpty(key))
+            {
+                key = key.ToLower();
+                if (key == "true" || key == "1")
+                    RequireSsl = true;
+            }
+        }
+
+
+        public override void OnAuthorization(AuthorizationContext filterContext)
+        {
+            if (filterContext != null &&
+                RequireSsl &&
+                !filterContext.HttpContext.Request.IsSecureConnection)
+            {
+                HandleNonHttpsRequest(filterContext);
+            }
+        }
+    }
+}