HttpHandlersInstallComponent.cs source code in C# .NET

                        Code:
                         / WCF / WCF / 3.5.30729.1 / untmp / Orcas / SP / ndp / cdf / src / WCF / Tools / xws_reg / System / ServiceModel / Install / Configuration / HttpHandlersInstallComponent.cs / 1 / HttpHandlersInstallComponent.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------------------------

namespace System.ServiceModel.Install.Configuration 
{
    using System; 
    using System.Collections.Generic; 
    using System.Configuration;
    using System.Globalization; 
    using System.Text;
    using System.Web.Configuration;

    internal class HttpHandlersInstallComponent : ServiceModelInstallComponent 
    {
        ConfigurationLoader configLoader; 
        string displayString; 

        HttpHandlersInstallComponent(ConfigurationLoader configLoader) 
        {
            this.configLoader = configLoader;
        }
 
        internal override string DisplayName
        { 
            get {return this.displayString; } 
        }
 
        protected override string InstallActionMessage
        {
            get {return SR.GetString(SR.HttpHandlersComponentInstall, ServiceModelInstallStrings.HttpHandlersPath); }
        } 

        internal override string[] InstalledVersions 
        { 
            get
            { 
                List installedVersions = new List();

                if (null != configLoader.SystemWebSectionGroup)
                { 
                    // Foreach needed here since HttpHandlerActionCollection does not have an accessor that takes a string
                    foreach (HttpHandlerAction handler in configLoader.SystemWebSectionGroup.HttpHandlers.Handlers) 
                    { 
                        if (handler.Path.Equals(ServiceModelInstallStrings.HttpHandlersPath, StringComparison.OrdinalIgnoreCase))
                        { 
                            Type type = GetHandlerType(handler.Type);
                            string versionString = null;
                            if (type != null)
                            { 
                                versionString = handler.Path + ServiceModelInstallStrings.VersionStringSeparator + InstallHelper.GetVersionStringFromTypeString(type.AssemblyQualifiedName);
                            } 
                            else 
                            {
                                versionString = handler.Path + ServiceModelInstallStrings.VersionStringSeparator + handler.Type; 
                            }

                            installedVersions.Add(versionString);
                        } 
                    }
                } 
 
                return installedVersions.ToArray();
            } 
        }

        internal override bool IsInstalled
        { 
            get
            { 
                if (null != configLoader.SystemWebSectionGroup) 
                {
                    Type forbiddenHandlerType = GetHandlerType(ServiceModelInstallStrings.HttpForbiddenHandlerType); 
                    // Foreach needed here since HttpHandlerActionCollection does not have an accessor that takes a string
                    foreach (HttpHandlerAction installedHandler in configLoader.SystemWebSectionGroup.HttpHandlers.Handlers)
                    {
                        if (installedHandler.Path.Equals(ServiceModelInstallStrings.HttpHandlersPath, StringComparison.OrdinalIgnoreCase)) 
                        {
                            Type type = GetHandlerType(installedHandler.Type); 
 
                            // Only if the type is Forbidden we assume it's installed.
                            if (type == null || !type.Equals(forbiddenHandlerType)) 
                            {
                                return true;
                            }
                        } 
                    }
                } 
                return false; 
            }
        } 

        protected override string ReinstallActionMessage
        {
            get {return SR.GetString(SR.HttpHandlersComponentReinstall, ServiceModelInstallStrings.HttpHandlersPath); } 
        }
 
        protected override string UninstallActionMessage 
        {
            get {return SR.GetString(SR.HttpHandlersComponentUninstall, ServiceModelInstallStrings.HttpHandlersPath); } 
        }

        internal static HttpHandlersInstallComponent CreateNativeHttpHandlersInstallComponent()
        { 
            HttpHandlersInstallComponent httpHandlersComponent = new HttpHandlersInstallComponent(new NativeConfigurationLoader());
            httpHandlersComponent.displayString = SR.GetString(SR.HttpHandlersComponentName); 
            return httpHandlersComponent; 
        }
 
        internal static HttpHandlersInstallComponent CreateWow64HttpHandlersInstallComponent()
        {
            if (!InstallHelper.Is64BitMachine() || String.IsNullOrEmpty(InstallHelper.Wow64WebConfigFileName))
            { 
                throw new ConfigurationLoaderException(SR.GetString(SR.Wow64NotInstalled));
            } 
 
            HttpHandlersInstallComponent httpHandlersComponent = new HttpHandlersInstallComponent(new Wow64ConfigurationLoader());
            httpHandlersComponent.displayString = SR.GetString(SR.HttpHandlersComponentNameWow64); 
            return httpHandlersComponent;
        }

        internal static Type GetHandlerType(string typeName) 
        {
            Type type = Type.GetType(typeName, false); 
            if (type == null) 
            {
                // Try System.Web 
                type = typeof(System.Web.IHttpHandler).Assembly.GetType(typeName, false);
            }

            return type; 
        }
 
        internal override void Install(OutputLevel outputLevel) 
        {
            if (!this.IsInstalled) 
            {
                if (null != configLoader.SystemWebSectionGroup)
                {
                    List handlerList = new List(); 
                    HttpHandlerActionCollection handlers = configLoader.SystemWebSectionGroup.HttpHandlers.Handlers;
                    // Foreach needed here since HttpHandlerActionCollection does not have an accessor that takes a string 
                    foreach (HttpHandlerAction handler in handlers) 
                    {
                        if (string.CompareOrdinal(handler.Path, ServiceModelInstallStrings.WildCardHttpHandlerPath) == 0) 
                        {
                            handlerList.Add(handler);
                        }
                    } 
                    // Adding Indigo handler
                    handlers.Add(new HttpHandlerAction(ServiceModelInstallStrings.HttpHandlersPath, ServiceModelInstallStrings.HttpHandlersType, ServiceModelInstallStrings.HttpHandlersVerb, false)); 
                    for (int i = 0; i < handlerList.Count; i++) 
                    {
                        handlers.Remove(handlerList[i]); 
                    }
                    configLoader.Save();
                    // Move wildcard handlers to the end of the collection:
                    // need to refresh our config objects, or the old config/section will retain information on their original position 
                    handlers = configLoader.SystemWebSectionGroup.HttpHandlers.Handlers;
                    for (int i = 0; i < handlerList.Count; i++) 
                    { 
                        handlers.Add(handlerList[i]);
                    } 
                    configLoader.Save();
                }
                else
                { 
                    throw new InvalidOperationException(SR.GetString(SR.ConfigurationSectionNotInstalled,
                        configLoader.SystemWebSectionGroupPath, 
                        configLoader.RootWebConfigurationFilePath)); 
                }
            } 
            else
            {
                EventLogger.LogWarning(SR.GetString(SR.HttpHandlersComponentAlreadyExists, ServiceModelInstallStrings.HttpHandlersPath), (OutputLevel.Verbose == outputLevel));
            } 
        }
 
        internal override void Uninstall(OutputLevel outputLevel) 
        {
            if (this.IsInstalled) 
            {
                // Remove the httpHandlers node
                // Foreach needed here since HttpHandlerActionCollection does not have an accessor that takes a string
                foreach (HttpHandlerAction installedHandler in configLoader.SystemWebSectionGroup.HttpHandlers.Handlers) 
                {
                    if (installedHandler.Path.Equals(ServiceModelInstallStrings.HttpHandlersPath, StringComparison.OrdinalIgnoreCase)) 
                    { 
                        installedHandler.Type = ServiceModelInstallStrings.HttpForbiddenHandlerType;
                        installedHandler.Validate = true; 
                    }
                }

                configLoader.Save(); 
            }
            else 
            { 
                EventLogger.LogWarning(SR.GetString(SR.HttpHandlersComponentNotInstalled, ServiceModelInstallStrings.HttpHandlersPath), (OutputLevel.Verbose == outputLevel));
            } 
        }

        internal override InstallationState VerifyInstall()
        { 
            InstallationState installState = InstallationState.Unknown;
            if (this.IsInstalled) 
            { 
                if (null != configLoader.SystemWebSectionGroup)
                { 
                    HttpHandlerAction handler = new HttpHandlerAction(ServiceModelInstallStrings.HttpHandlersPath, ServiceModelInstallStrings.HttpHandlersType, ServiceModelInstallStrings.HttpHandlersVerb, false);
                    // Foreach needed here since HttpHandlerActionCollection does not have an accessor that takes a string
                    foreach (HttpHandlerAction installedHandler in configLoader.SystemWebSectionGroup.HttpHandlers.Handlers)
                    { 
                        if (handler.Path.Equals(installedHandler.Path, StringComparison.OrdinalIgnoreCase))
                        { 
                            if (installedHandler.Equals(handler)) 
                            {
                                installState = InstallationState.InstalledDefaults; 
                            }
                            else
                            {
                                installState = InstallationState.InstalledCustom; 
                            }
                        } 
                    } 
                }
            } 
            else
            {
                installState = InstallationState.NotInstalled;
            } 
            return installState;
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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HttpHandlersInstallComponent.cs source code in C# .NET

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