HttpModule.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WCF / System.ServiceModel.Activation / System / ServiceModel / Activation / HttpModule.cs / 1305376 / HttpModule.cs
                        
                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------
namespace System.ServiceModel.Activation
{ 
    using System.Diagnostics;
    using System.Runtime; 
    using System.Security; 
    using System.ServiceModel;
    using System.Web; 
    using System.Web.Hosting;

    class HttpModule : IHttpModule
    { 
        static bool disabled;
 
        [Fx.Tag.SecurityNote(Miscellaneous = "RequiresReview - called outside PermitOnly context.")] 
        public void Dispose()
        { 
        }

        [Fx.Tag.SecurityNote(Critical = "Entry-point from asp.net, accesses ProcessRequest which is SecurityCritical.")]
        [SecurityCritical] 
        public void Init(HttpApplication context)
        { 
            context.PostAuthenticateRequest += new EventHandler(ProcessRequest); 
        }
 
        [Fx.Tag.SecurityNote(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;
            }

            HttpApplication application = (HttpApplication)sender; 

            // Check to see whether the extension is supported 
            string extension = application.Request.CurrentExecutionFilePathExtension; 
            if (string.IsNullOrEmpty(extension))
            { 
                return;
            }

            ServiceHostingEnvironment.ServiceType serviceType = ServiceHostingEnvironment.GetServiceType(extension); 
            // do extension check first so that we do not need to do it in aspnetrouting/configurationbasedactivation
            if (serviceType == ServiceHostingEnvironment.ServiceType.Unknown) 
            { 
                return;
            } 

            // check for AspNetcompat
            if (ServiceHostingEnvironment.AspNetCompatibilityEnabled)
            { 
                // remap httphandler for xamlx in CBA, since there is No physical file and
                // the xamlx httphandlerfactory will do file exist checking 
                if (serviceType == ServiceHostingEnvironment.ServiceType.Workflow && ServiceHostingEnvironment.IsConfigurationBasedService(application)) 
                {
                    application.Context.RemapHandler(new HttpHandler()); 
                }
                return;
            }
 
            else if (serviceType == ServiceHostingEnvironment.ServiceType.WCF)
            { 
                HostedHttpRequestAsyncResult.ExecuteSynchronous(application, false, false); 
            }
            else if (serviceType == ServiceHostingEnvironment.ServiceType.Workflow) 
            {
                HostedHttpRequestAsyncResult.ExecuteSynchronous(application, false, true);
            }
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------
namespace System.ServiceModel.Activation
{ 
    using System.Diagnostics;
    using System.Runtime; 
    using System.Security; 
    using System.ServiceModel;
    using System.Web; 
    using System.Web.Hosting;

    class HttpModule : IHttpModule
    { 
        static bool disabled;
 
        [Fx.Tag.SecurityNote(Miscellaneous = "RequiresReview - called outside PermitOnly context.")] 
        public void Dispose()
        { 
        }

        [Fx.Tag.SecurityNote(Critical = "Entry-point from asp.net, accesses ProcessRequest which is SecurityCritical.")]
        [SecurityCritical] 
        public void Init(HttpApplication context)
        { 
            context.PostAuthenticateRequest += new EventHandler(ProcessRequest); 
        }
 
        [Fx.Tag.SecurityNote(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;
            }

            HttpApplication application = (HttpApplication)sender; 

            // Check to see whether the extension is supported 
            string extension = application.Request.CurrentExecutionFilePathExtension; 
            if (string.IsNullOrEmpty(extension))
            { 
                return;
            }

            ServiceHostingEnvironment.ServiceType serviceType = ServiceHostingEnvironment.GetServiceType(extension); 
            // do extension check first so that we do not need to do it in aspnetrouting/configurationbasedactivation
            if (serviceType == ServiceHostingEnvironment.ServiceType.Unknown) 
            { 
                return;
            } 

            // check for AspNetcompat
            if (ServiceHostingEnvironment.AspNetCompatibilityEnabled)
            { 
                // remap httphandler for xamlx in CBA, since there is No physical file and
                // the xamlx httphandlerfactory will do file exist checking 
                if (serviceType == ServiceHostingEnvironment.ServiceType.Workflow && ServiceHostingEnvironment.IsConfigurationBasedService(application)) 
                {
                    application.Context.RemapHandler(new HttpHandler()); 
                }
                return;
            }
 
            else if (serviceType == ServiceHostingEnvironment.ServiceType.WCF)
            { 
                HostedHttpRequestAsyncResult.ExecuteSynchronous(application, false, false); 
            }
            else if (serviceType == ServiceHostingEnvironment.ServiceType.Workflow) 
            {
                HostedHttpRequestAsyncResult.ExecuteSynchronous(application, false, true);
            }
        } 
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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HttpModule.cs source code in C# .NET

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