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

   1 //
   2 // UrlRoutingModule.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2008 Novell Inc. http://novell.com
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30 using System;
  31 using System.Runtime.CompilerServices;
  32 using System.Security.Permissions;
  33 using System.Threading;
  34 using System.Web;
  35
  36 namespace System.Web.Routing
  37 {
  38         [TypeForwardedFrom ("System.Web.Routing, Version=3.5.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35")]
  39         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  40         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  41         public class UrlRoutingModule : IHttpModule
  42         {
  43                 RouteCollection routes;
  44                 public RouteCollection RouteCollection {
  45                         get {
  46                                 if (routes == null)
  47                                         routes = RouteTable.Routes;
  48                                 return routes;
  49                         }
  50                         set { routes = value; }
  51                 }
  52
  53                 protected virtual void Dispose ()
  54                 {
  55                 }
  56
  57                 void IHttpModule.Dispose ()
  58                 {
  59                         Dispose ();
  60                 }
  61
  62                 void IHttpModule.Init (HttpApplication application)
  63                 {
  64                         Init (application);
  65                 }
  66
  67                 protected virtual void Init (HttpApplication application)
  68                 {
  69                         application.PostMapRequestHandler += PostMapRequestHandler;
  70                         application.PostResolveRequestCache += PostResolveRequestCache;
  71                 }
  72
  73                 void PostMapRequestHandler (object o, EventArgs e)
  74                 {
  75                         var app = (HttpApplication) o;
  76                         PostMapRequestHandler (new HttpContextWrapper (app.Context));
  77                 }
  78
  79                 void PostResolveRequestCache (object o, EventArgs e)
  80                 {
  81                         var app = (HttpApplication) o;
  82                         PostResolveRequestCache (new HttpContextWrapper (app.Context));
  83                 }
  84                 [Obsolete]
  85                 public virtual void PostMapRequestHandler (HttpContextBase context)
  86                 {
  87                 }
  88
  89                 [MonoTODO]
  90                 public virtual void PostResolveRequestCache (HttpContextBase context)
  91                 {
  92                         if (context == null)
  93                                 throw new ArgumentNullException ("context");
  94
  95                         var rd = RouteCollection.GetRouteData (context);
  96                         if (rd == null)
  97                                 return; // do nothing
  98
  99                         if (rd.RouteHandler == null)
 100                                 throw new InvalidOperationException ("No  IRouteHandler is assigned to the selected route");
 101
 102                         if (rd.RouteHandler is StopRoutingHandler)
 103                                 return; //stop further processing
 104
 105                         var rc = new RequestContext (context, rd);
 106
 107                         IHttpHandler http = rd.RouteHandler.GetHttpHandler (rc);
 108                         if (http == null)
 109                                 throw new InvalidOperationException ("The mapped IRouteHandler did not return an IHttpHandler");
 110                         context.Request.RequestContext = rc;
 111                         context.RemapHandler (http);
 112                 }
 113         }
 114 }