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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Diagnostics.CodeAnalysis;
using System.Linq;
using System.Reflection;
using System.Web.Mvc.Properties;
namespace System.Web.Mvc
{
[SuppressMessage("Microsoft.Design", "CA1019:DefineAccessorsForAttributeArguments", Justification = "The accessor is exposed as an ICollection<string>.")]
[AttributeUsage(AttributeTargets.Method, AllowMultiple = false, Inherited = true)]
public sealed class AcceptVerbsAttribute : ActionMethodSelectorAttribute
{
public AcceptVerbsAttribute(HttpVerbs verbs)
: this(EnumToArray(verbs))
{
}
public AcceptVerbsAttribute(params string[] verbs)
{
if (verbs == null || verbs.Length == 0)
{
throw new ArgumentException(MvcResources.Common_NullOrEmpty, "verbs");
}
Verbs = new ReadOnlyCollection<string>(verbs);
}
public ICollection<string> Verbs { get; private set; }
private static void AddEntryToList(HttpVerbs verbs, HttpVerbs match, List<string> verbList, string entryText)
{
if ((verbs & match) != 0)
{
verbList.Add(entryText);
}
}
internal static string[] EnumToArray(HttpVerbs verbs)
{
List<string> verbList = new List<string>();
AddEntryToList(verbs, HttpVerbs.Get, verbList, "GET");
AddEntryToList(verbs, HttpVerbs.Post, verbList, "POST");
AddEntryToList(verbs, HttpVerbs.Put, verbList, "PUT");
AddEntryToList(verbs, HttpVerbs.Delete, verbList, "DELETE");
AddEntryToList(verbs, HttpVerbs.Head, verbList, "HEAD");
AddEntryToList(verbs, HttpVerbs.Patch, verbList, "PATCH");
AddEntryToList(verbs, HttpVerbs.Options, verbList, "OPTIONS");
return verbList.ToArray();
}
public override bool IsValidForRequest(ControllerContext controllerContext, MethodInfo methodInfo)
{
if (controllerContext == null)
{
throw new ArgumentNullException("controllerContext");
}
string incomingVerb = controllerContext.HttpContext.Request.GetHttpMethodOverride();
return Verbs.Contains(incomingVerb, StringComparer.OrdinalIgnoreCase);
}
}
}
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