119 lines
4.8 KiB
C#
119 lines
4.8 KiB
C#
namespace System.Web.Routing {
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using System.Diagnostics;
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using System.Globalization;
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using System.Runtime.CompilerServices;
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using System.Web.Security;
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[TypeForwardedFrom("System.Web.Routing, Version=3.5.0.0, Culture=Neutral, PublicKeyToken=31bf3856ad364e35")]
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public class UrlRoutingModule : IHttpModule {
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private static readonly object _contextKey = new Object();
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private static readonly object _requestDataKey = new Object();
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private RouteCollection _routeCollection;
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[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly",
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Justification = "This needs to be settable for unit tests.")]
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public RouteCollection RouteCollection {
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get {
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if (_routeCollection == null) {
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_routeCollection = RouteTable.Routes;
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}
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return _routeCollection;
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}
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set {
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_routeCollection = value;
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}
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}
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protected virtual void Dispose() {
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}
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protected virtual void Init(HttpApplication application) {
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//////////////////////////////////////////////////////////////////
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// Check if this module has been already addded
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if (application.Context.Items[_contextKey] != null) {
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return; // already added to the pipeline
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}
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application.Context.Items[_contextKey] = _contextKey;
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// Ideally we would use the MapRequestHandler event. However, MapRequestHandler is not available
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// in II6 or IIS7 ISAPI Mode. Instead, we use PostResolveRequestCache, which is the event immediately
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// before MapRequestHandler. This allows use to use one common codepath for all versions of IIS.
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application.PostResolveRequestCache += OnApplicationPostResolveRequestCache;
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}
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private void OnApplicationPostResolveRequestCache(object sender, EventArgs e) {
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HttpApplication app = (HttpApplication)sender;
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HttpContextBase context = new HttpContextWrapper(app.Context);
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PostResolveRequestCache(context);
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}
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[Obsolete("This method is obsolete. Override the Init method to use the PostMapRequestHandler event.")]
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public virtual void PostMapRequestHandler(HttpContextBase context) {
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// Backwards compat with 3.5 which used to have code here to Rewrite the URL
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}
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public virtual void PostResolveRequestCache(HttpContextBase context) {
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// Match the incoming URL against the route table
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RouteData routeData = RouteCollection.GetRouteData(context);
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// Do nothing if no route found
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if (routeData == null) {
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return;
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}
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// If a route was found, get an IHttpHandler from the route's RouteHandler
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IRouteHandler routeHandler = routeData.RouteHandler;
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if (routeHandler == null) {
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throw new InvalidOperationException(
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String.Format(
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CultureInfo.CurrentCulture,
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SR.GetString(SR.UrlRoutingModule_NoRouteHandler)));
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}
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// This is a special IRouteHandler that tells the routing module to stop processing
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// routes and to let the fallback handler handle the request.
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if (routeHandler is StopRoutingHandler) {
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return;
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}
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RequestContext requestContext = new RequestContext(context, routeData);
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// Dev10 766875 Adding RouteData to HttpContext
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context.Request.RequestContext = requestContext;
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IHttpHandler httpHandler = routeHandler.GetHttpHandler(requestContext);
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if (httpHandler == null) {
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throw new InvalidOperationException(
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String.Format(
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CultureInfo.CurrentUICulture,
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SR.GetString(SR.UrlRoutingModule_NoHttpHandler),
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routeHandler.GetType()));
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}
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if (httpHandler is UrlAuthFailureHandler) {
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if (FormsAuthenticationModule.FormsAuthRequired) {
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UrlAuthorizationModule.ReportUrlAuthorizationFailure(HttpContext.Current, this);
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return;
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}
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else {
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throw new HttpException(401, SR.GetString(SR.Assess_Denied_Description3));
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}
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}
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// Remap IIS7 to our handler
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context.RemapHandler(httpHandler);
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}
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#region IHttpModule Members
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void IHttpModule.Dispose() {
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Dispose();
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}
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void IHttpModule.Init(HttpApplication application) {
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Init(application);
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}
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#endregion
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}
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}
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