2 // System.Web.Security.DefaultAuthenticationModule
5 // Gonzalo Paniagua Javier (gonzalo@ximian.com)
7 // (C) 2002 Ximian, Inc (http://www.ximian.com)
8 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
10 // Permission is hereby granted, free of charge, to any person obtaining
11 // a copy of this software and associated documentation files (the
12 // "Software"), to deal in the Software without restriction, including
13 // without limitation the rights to use, copy, modify, merge, publish,
14 // distribute, sublicense, and/or sell copies of the Software, and to
15 // permit persons to whom the Software is furnished to do so, subject to
16 // the following conditions:
18 // The above copyright notice and this permission notice shall be
19 // included in all copies or substantial portions of the Software.
21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 using System.Security.Permissions;
31 using System.Security.Principal;
32 using System.Threading;
34 // more info on the workings of this class can be found in Shackow, p. 55
36 namespace System.Web.Security
38 // CAS - no InheritanceDemand here as the class is sealed
39 [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
40 public sealed class DefaultAuthenticationModule : IHttpModule
42 static GenericIdentity defaultIdentity = new GenericIdentity ("", "");
44 [SecurityPermission (SecurityAction.Demand, UnmanagedCode = true)]
45 public DefaultAuthenticationModule ()
49 public event DefaultAuthenticationEventHandler Authenticate;
51 public void Dispose ()
55 public void Init (HttpApplication app)
57 app.DefaultAuthentication += new EventHandler (OnDefaultAuthentication);
60 void OnDefaultAuthentication (object sender, EventArgs args)
62 HttpApplication app = (HttpApplication) sender;
63 HttpContext context = app.Context;
65 if (context.User == null && Authenticate != null)
66 Authenticate (this, new DefaultAuthenticationEventArgs (context));
68 if (context.User == null)
69 context.User = new GenericPrincipal (defaultIdentity, new string [0]);
71 Thread.CurrentPrincipal = context.User;