private static IHttpHandler FindHandler(string name)
{
Debug.Assert(name != null);
switch (name)
{
case "detail":
return(CreateTemplateHandler <ErrorDetailPage>());
case "html":
return(new ErrorHtmlPage());
case "delete":
return(new DelegatingHttpHandler(ErrorDeletionHandler.ProcessRequest));
case "truncate":
return(new DelegatingHttpHandler(ErrorTruncationHandler.ProcessRequest));
case "xml":
return(new DelegatingHttpHandler(ErrorXmlHandler.ProcessRequest));
case "json":
return(new DelegatingHttpHandler(ErrorJsonHandler.ProcessRequest));
case "rss":
return(new DelegatingHttpHandler(ErrorRssHandler.ProcessRequest));
case "digestrss":
return(new DelegatingHttpHandler(ErrorDigestRssHandler.ProcessRequest));
case "download":
#if NET_3_5 || NET_4_0
return(new HttpAsyncHandler((context, getAsyncCallback) => HttpTextAsyncHandler.Create(ErrorLogDownloadHandler.ProcessRequest)(context, getAsyncCallback)));
#else
return(new DelegatingHttpTaskAsyncHandler(ErrorLogDownloadHandler.ProcessRequestAsync));
#endif
case "stylesheet":
return(new DelegatingHttpHandler(ManifestResourceHandler.Create(StyleSheetHelper.StyleSheetResourceNames, "text/css", Encoding.GetEncoding("Windows-1252"), true)));
case "test":
throw new TestException();
case "about":
return(CreateTemplateHandler <AboutPage>());
default:
return(name.Length == 0 ? CreateTemplateHandler <ErrorLogPage>() : null);
}
}
/// <summary>
/// Returns an object that implements the <see cref="IHttpHandler"/>
/// interface and which is responsible for serving the request.
/// </summary>
/// <returns>
/// A new <see cref="IHttpHandler"/> object that processes the request.
/// </returns>
public virtual IHttpHandler GetHandler(HttpContextBase context, string requestType, string url, string pathTranslated)
{
//
// The request resource is determined by the looking up the
// value of the PATH_INFO server variable.
//
var request = context.Request;
var resource = request.PathInfo.Length == 0
? string.Empty
: request.PathInfo.Substring(1).ToLowerInvariant();
var handler = FindHandler(resource);
if (handler == null)
{
throw new HttpException(404, "Resource not found.");
}
//
// Check if authorized then grant or deny request.
//
var authorized = IsAuthorized(context);
if (authorized == false ||
(authorized == null && // Compatibility case...
!request.IsLocal &&
!SecurityConfiguration.Default.AllowRemoteAccess))
{
ManifestResourceHandler.Create("RemoteAccessError.htm", "text/html")(context);
var response = context.Response;
response.Status = "403 Forbidden";
response.End();
//
// HttpResponse.End docs say that it throws
// ThreadAbortException and so should never end up here but
// that's not been the observation in the debugger. So as a
// precautionary measure, bail out anyway.
//
return(null);
}
return(handler);
}