84 lines
2.9 KiB
C#
84 lines
2.9 KiB
C#
//
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// System.Web.Security.DefaultAuthenticationModule
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//
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// Authors:
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// Gonzalo Paniagua Javier (gonzalo@ximian.com)
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//
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// (C) 2002 Ximian, Inc (http://www.ximian.com)
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// Copyright (C) 2005 Novell, Inc (http://www.novell.com)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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using System.ComponentModel;
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using System.Security.Permissions;
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using System.Security.Principal;
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using System.Threading;
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// more info on the workings of this class can be found in Shackow, p. 55
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//
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namespace System.Web.Security
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{
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// CAS - no InheritanceDemand here as the class is sealed
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[AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
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public sealed class DefaultAuthenticationModule : IHttpModule
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{
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static readonly object authenticateEvent = new object ();
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static IPrincipal generic_principal = new GenericPrincipal (new GenericIdentity ("", ""), new string [0]);
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EventHandlerList events = new EventHandlerList ();
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public event DefaultAuthenticationEventHandler Authenticate {
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add { events.AddHandler (authenticateEvent, value); }
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remove { events.RemoveHandler (authenticateEvent, value); }
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}
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[SecurityPermission (SecurityAction.Demand, UnmanagedCode = true)]
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public DefaultAuthenticationModule ()
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{
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}
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public void Dispose ()
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{
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}
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public void Init (HttpApplication app)
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{
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app.DefaultAuthentication += new EventHandler (OnDefaultAuthentication);
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}
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void OnDefaultAuthentication (object sender, EventArgs args)
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{
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HttpApplication app = (HttpApplication) sender;
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HttpContext context = app.Context;
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DefaultAuthenticationEventHandler eh = events [authenticateEvent] as DefaultAuthenticationEventHandler;
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if (context.User == null && eh != null)
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eh (this, new DefaultAuthenticationEventArgs (context));
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if (context.User == null)
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context.User = generic_principal;
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Thread.CurrentPrincipal = context.User;
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}
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}
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}
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