HttpModule.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / ServiceModel / System / ServiceModel / Activation / HttpModule.cs / 1 / HttpModule.cs
                        

                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------
namespace System.ServiceModel.Activation
{ 
    using System.Threading;
    using System.ServiceModel; 
    using System.Web; 
    using System.Web.Hosting;
    using System.Security; 
    using System.Security.Permissions;
    using System.Diagnostics;

    class HttpModule : IHttpModule 
    {
        static bool disabled; 
 
        /// 
        /// RequiresReview - called outside PermitOnly context, 
        /// 
        [SecurityRequiresReview]
        public void Dispose()
        { 
        }
 
        ///  
        /// Critical - entry-point from asp.net, accesses ProcessRequest which is SecurityCritical
        ///  
        [SecurityCritical]
        public void Init(HttpApplication context)
        {
            context.PostAuthenticateRequest += new EventHandler(ProcessRequest); 
        }
 
        ///  
        /// Critical - Entry-point from asp.net, called outside PermitOnly context
        ///            ASP calls are critical 
        ///            HostedHttpRequestAsyncResult..ctor is critical because it captures HostedImpersonationContext
        ///            (and makes it available later) so caller must ensure that this is called in the right place
        /// 
        [SecurityCritical] 
        static void ProcessRequest(object sender, EventArgs e)
        { 
            if (HttpModule.disabled) 
            {
                return; 
            }

            try
            { 
                ServiceHostingEnvironment.SafeEnsureInitialized();
            } 
            catch (SecurityException exception) 
            {
                HttpModule.disabled = true; 

                if (DiagnosticUtility.ShouldTraceWarning)
                {
                    DiagnosticUtility.ExceptionUtility.TraceHandledException(exception, TraceEventType.Warning); 
                }
 
                // If requesting a .svc file, the HttpHandler will try to handle it.  It will call 
                // SafeEnsureInitialized() again, which will fail with the same exception (it is
                // idempotent on failure).  This is the correct behavior. 
                return;
            }

            if (ServiceHostingEnvironment.AspNetCompatibilityEnabled) 
            {
                return; 
            } 

            // Check to see whether the extension is supported 
            HttpApplication application = (HttpApplication)sender;
            string extension = System.IO.Path.GetExtension(application.Request.FilePath);
            if (extension == null || !ServiceHostingEnvironment.GetExtensionSupported(extension))
            { 
                return;
            } 
 
            HostedHttpRequestAsyncResult.ExecuteSynchronous(application, false);
        } 
    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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