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//
// System.Web.Security.UrlAuthorizationModule
//
// Authors:
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (C) 2002,2003 Ximian, Inc (http://www.ximian.com)
// Copyright (c) 2005 Novell, Inc (http://www.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.Configuration;
using System.Web.Configuration;
using System.Security.Permissions;
using System.Security.Principal;
namespace System.Web.Security
{
// CAS - no InheritanceDemand here as the class is sealed
[AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
public sealed class UrlAuthorizationModule : IHttpModule
{
[SecurityPermission (SecurityAction.Demand, UnmanagedCode = true)]
public UrlAuthorizationModule ()
{
}
public void Dispose ()
{
}
public void Init (HttpApplication app)
{
app.AuthorizeRequest += new EventHandler (OnAuthorizeRequest);
}
void OnAuthorizeRequest (object sender, EventArgs args)
{
HttpApplication app = (HttpApplication) sender;
HttpContext context = app.Context;
if (context == null || context.SkipAuthorization)
return;
HttpRequest req = context.Request;
AuthorizationSection config = (AuthorizationSection) WebConfigurationManager.GetSection ("system.web/authorization", req.Path, context);
if (!config.IsValidUser (context.User, req.HttpMethod)) {
HttpException e = new HttpException (401, "Unauthorized");
HttpResponse response = context.Response;
response.StatusCode = 401;
response.Write (e.GetHtmlErrorMessage ());
app.CompleteRequest ();
}
}
public static bool CheckUrlAccessForPrincipal (string virtualPath, IPrincipal user, string verb)
{
AuthorizationSection config = (AuthorizationSection) WebConfigurationManager.GetSection ("system.web/authorization", virtualPath);
return config == null ? true : config.IsValidUser (user, verb);
}
internal static void ReportUrlAuthorizationFailure(HttpContext context, object webEventSource) {
// Deny access
context.Response.StatusCode = 401;
context.Response.Write (new HttpException(401, "Unauthorized").GetHtmlErrorMessage ());
#if false // Sys.Web.Mng not implemented on mono.
if (context.User != null && context.User.Identity.IsAuthenticated) {
// We don't raise failure audit event for anonymous user
WebBaseEvent.RaiseSystemEvent(webEventSource, WebEventCodes.AuditUrlAuthorizationFailure);
}
#endif
context.ApplicationInstance.CompleteRequest();
}
}
}
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