mcs/class/System.Web.Mvc2/System.Web.Mvc/AcceptVerbsAttribute.cs

   1 /* ****************************************************************************\r
   2  *\r
   3  * Copyright (c) Microsoft Corporation. All rights reserved.\r
   4  *\r
   5  * This software is subject to the Microsoft Public License (Ms-PL). \r
   6  * A copy of the license can be found in the license.htm file included \r
   7  * in this distribution.\r
   8  *\r
   9  * You must not remove this notice, or any other, from this software.\r
  10  *\r
  11  * ***************************************************************************/\r
  12 \r
  13 namespace System.Web.Mvc {\r
  14     using System;\r
  15     using System.Collections.Generic;\r
  16     using System.Collections.ObjectModel;\r
  17     using System.Diagnostics.CodeAnalysis;\r
  18     using System.Linq;\r
  19     using System.Reflection;\r
  20     using System.Web.Mvc.Resources;\r
  21 \r
  22     [SuppressMessage("Microsoft.Design", "CA1019:DefineAccessorsForAttributeArguments",\r
  23         Justification = "The accessor is exposed as an ICollection<string>.")]\r
  24     [AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = true)]\r
  25     public sealed class AcceptVerbsAttribute : ActionMethodSelectorAttribute {\r
  26         public AcceptVerbsAttribute(HttpVerbs verbs)\r
  27             : this(EnumToArray(verbs)) {\r
  28         }\r
  29 \r
  30         public AcceptVerbsAttribute(params string[] verbs) {\r
  31             if (verbs == null || verbs.Length == 0) {\r
  32                 throw new ArgumentException(MvcResources.Common_NullOrEmpty, "verbs");\r
  33             }\r
  34 \r
  35             Verbs = new ReadOnlyCollection<string>(verbs);\r
  36         }\r
  37 \r
  38         public ICollection<string> Verbs {\r
  39             get;\r
  40             private set;\r
  41         }\r
  42 \r
  43         private static void AddEntryToList(HttpVerbs verbs, HttpVerbs match, List<string> verbList, string entryText) {\r
  44             if ((verbs & match) != 0) {\r
  45                 verbList.Add(entryText);\r
  46             }\r
  47         }\r
  48 \r
  49         internal static string[] EnumToArray(HttpVerbs verbs) {\r
  50             List<string> verbList = new List<string>();\r
  51 \r
  52             AddEntryToList(verbs, HttpVerbs.Get, verbList, "GET");\r
  53             AddEntryToList(verbs, HttpVerbs.Post, verbList, "POST");\r
  54             AddEntryToList(verbs, HttpVerbs.Put, verbList, "PUT");\r
  55             AddEntryToList(verbs, HttpVerbs.Delete, verbList, "DELETE");\r
  56             AddEntryToList(verbs, HttpVerbs.Head, verbList, "HEAD");\r
  57 \r
  58             return verbList.ToArray();\r
  59         }\r
  60 \r
  61         public override bool IsValidForRequest(ControllerContext controllerContext, MethodInfo methodInfo) {\r
  62             if (controllerContext == null) {\r
  63                 throw new ArgumentNullException("controllerContext");\r
  64             }\r
  65 \r
  66             string incomingVerb = controllerContext.HttpContext.Request.GetHttpMethodOverride();\r
  67 \r
  68             return Verbs.Contains(incomingVerb, StringComparer.OrdinalIgnoreCase);\r
  69         }\r
  70     }\r
  71 }\r