Imported Upstream version 4.3.2.467

Former-commit-id: 9c2cb47f45fa221e661ab616387c9cda183f283d

mcs/class/System.Web/System.Web.Routing/HttpMethodConstraint.cs

@@ -0,0 +1,89 @@
+//
+// HttpMethodConstraint.cs
+//
+// Author:
+//	Atsushi Enomoto <atsushi@ximian.com>
+//
+// Copyright (C) 2008 Novell Inc. http://novell.com
+//
+
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+// 
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+//
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+using System.Security.Permissions;
+using System.Web;
+
+namespace System.Web.Routing
+{
+	[TypeForwardedFrom ("System.Web.Routing, Version=3.5.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35")]
+	[AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
+	[AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
+	public class HttpMethodConstraint : IRouteConstraint
+	{
+		public HttpMethodConstraint (params string[] allowedMethods)
+		{
+			if (allowedMethods == null)
+				throw new ArgumentNullException ("allowedMethods");
+			AllowedMethods = allowedMethods;
+		}
+
+		public ICollection<string> AllowedMethods { get; private set; }
+
+		bool IRouteConstraint.Match (HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection)
+		{
+			return Match (httpContext, route, parameterName, values, routeDirection);
+		}
+
+		protected virtual bool Match (HttpContextBase httpContext, Route route, string parameterName, RouteValueDictionary values, RouteDirection routeDirection)
+		{
+			if (httpContext == null)
+				throw new ArgumentNullException ("httpContext");
+			if (route == null)
+				throw new ArgumentNullException ("route");
+			if (parameterName == null)
+				throw new ArgumentNullException ("parameterName");
+			if (values == null)
+				throw new ArgumentNullException ("values");
+
+			switch (routeDirection) {
+			case RouteDirection.IncomingRequest:
+				// LAMESPEC: .NET allows case-insensitive comparison, which violates RFC 2616
+				return AllowedMethods.Contains (httpContext.Request.HttpMethod);
+
+			case RouteDirection.UrlGeneration:
+				// See: aspnetwebstack's WebAPI equivalent for details.
+				object method;
+
+				if (!values.TryGetValue (parameterName, out method))
+					return true;
+
+				// LAMESPEC: .NET allows case-insensitive comparison, which violates RFC 2616
+				return AllowedMethods.Contains (Convert.ToString (method));
+
+			default:
+				throw new ArgumentException ("Invalid routeDirection: " + routeDirection);
+			}
+		}
+	}
+}