SimpleWorkerRequest.cs source code in C# .NET

                        Code:
                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / Hosting / SimpleWorkerRequest.cs / 1587057 / SimpleWorkerRequest.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.Hosting { 
 
    using System.Collections;
    using System.IO; 
    using System.Runtime.InteropServices;
    using System.Security.Principal;
    using System.Security;
    using System.Security.Permissions; 
    using System.Threading;
    using System.Web.Configuration; 
    using System.Web.Util; 

    // 
    // Simple Worker Request provides a concrete implementation
    // of HttpWorkerRequest that writes the respone to the user
    // supplied writer.
    // 

    ///  
    ///    [To be supplied.] 
    /// 
    [ComVisible(false)] 
    public class SimpleWorkerRequest : HttpWorkerRequest {

        private bool        _hasRuntimeInfo;
        private String      _appVirtPath;       // "/foo" 
        private String      _appPhysPath;       // "c:\foo\"
        private String      _page; 
        private String      _pathInfo; 
        private String      _queryString;
        private TextWriter  _output; 
        private String      _installDir;

        private void ExtractPagePathInfo() {
            int i = _page.IndexOf('/'); 

            if (i >= 0) { 
                _pathInfo = _page.Substring(i); 
                _page = _page.Substring(0, i);
            } 
        }

        private String GetPathInternal(bool includePathInfo) {
            String s = _appVirtPath.Equals("/") ? ("/" + _page) : (_appVirtPath + "/" + _page); 

            if (includePathInfo && _pathInfo != null) 
                return s + _pathInfo; 
            else
                return s; 
        }

        //
        //  HttpWorkerRequest implementation 
        //
 
        // "/foo/page.aspx/tail" 

        ///  
        ///    [To be supplied.]
        /// 
        public override String GetUriPath() {
            return GetPathInternal(true); 
        }
 
        // "param=bar" 

        ///  
        ///    [To be supplied.]
        /// 
        public override String GetQueryString() {
            return _queryString; 
        }
 
        // "/foo/page.aspx/tail?param=bar" 

        ///  
        ///    [To be supplied.]
        /// 
        public override String GetRawUrl() {
            String qs = GetQueryString(); 
            if (!String.IsNullOrEmpty(qs))
                return GetPathInternal(true) + "?" + qs; 
            else 
                return GetPathInternal(true);
        } 


        /// 
        ///    [To be supplied.] 
        /// 
        public override String GetHttpVerbName() { 
            return "GET"; 
        }
 

        /// 
        ///    [To be supplied.]
        ///  
        public override String GetHttpVersion() {
            return "HTTP/1.0"; 
        } 

 
        /// 
        ///    [To be supplied.]
        /// 
        public override String GetRemoteAddress() { 
            return "127.0.0.1";
        } 
 

        ///  
        ///    [To be supplied.]
        /// 
        public override int GetRemotePort() {
            return 0; 
        }
 
 
        /// 
        ///    [To be supplied.] 
        /// 
        public override String GetLocalAddress() {
            return "127.0.0.1";
        } 

 
        ///  
        ///    [To be supplied.]
        ///  
        public override int GetLocalPort() {
            return 80;
        }
 

        ///  
        ///    [To be supplied.] 
        /// 
        public override IntPtr GetUserToken() { 
            return IntPtr.Zero;
        }

 
        /// 
        ///    [To be supplied.] 
        ///  
        public override String GetFilePath() {
            return GetPathInternal(false); 
        }


        ///  
        ///    [To be supplied.]
        ///  
        public override String GetFilePathTranslated() { 
            String path =  _appPhysPath + _page.Replace('/', '\\');
            InternalSecurityPermissions.PathDiscovery(path).Demand(); 
            return path;
        }

 
        /// 
        ///    [To be supplied.] 
        ///  
        public override String GetPathInfo() {
            return (_pathInfo != null) ? _pathInfo : String.Empty; 
        }


        ///  
        ///    [To be supplied.]
        ///  
        public override String GetAppPath() { 
            return _appVirtPath;
        } 


        /// 
        ///    [To be supplied.] 
        /// 
        public override String GetAppPathTranslated() { 
            InternalSecurityPermissions.PathDiscovery(_appPhysPath).Demand(); 
            return _appPhysPath;
        } 


        /// 
        ///    [To be supplied.] 
        /// 
        public override String GetServerVariable(String name) { 
            return String.Empty; 
        }
 

        /// 
        ///    [To be supplied.]
        ///  
        public override String MapPath(String path) {
            if (!_hasRuntimeInfo) 
                return null; 

            String mappedPath = null; 
            String appPath = _appPhysPath.Substring(0, _appPhysPath.Length-1); // without trailing "\"

            if (String.IsNullOrEmpty(path) || path.Equals("/")) {
                mappedPath = appPath; 
            }
            if (StringUtil.StringStartsWith(path, _appVirtPath)) { 
                mappedPath = appPath + path.Substring(_appVirtPath.Length).Replace('/', '\\'); 
            }
 
            InternalSecurityPermissions.PathDiscovery(mappedPath).Demand();
            return mappedPath;
        }
 

        ///  
        ///    [To be supplied.] 
        /// 
        public override string MachineConfigPath { 
            get {
                if (_hasRuntimeInfo) {
                    string path = HttpConfigurationSystem.MachineConfigurationFilePath;
                    InternalSecurityPermissions.PathDiscovery(path).Demand(); 
                    return path;
                } 
                else 
                    return null;
            } 
        }


        ///  
        ///    [To be supplied.]
        ///  
        public override string RootWebConfigPath { 
            get {
                if (_hasRuntimeInfo) { 
                    string path = HttpConfigurationSystem.RootWebConfigurationFilePath;
                    InternalSecurityPermissions.PathDiscovery(path).Demand();
                    return path;
                } 
                else
                    return null; 
            } 
        }
 

        /// 
        ///    [To be supplied.]
        ///  
        public override String MachineInstallDirectory {
            get { 
                if (_hasRuntimeInfo) { 
                    InternalSecurityPermissions.PathDiscovery(_installDir).Demand();
                    return _installDir; 
                }
                return null;
            }
        } 

 
        ///  
        ///    [To be supplied.]
        ///  
        public override void SendStatus(int statusCode, String statusDescription) {
        }

 
        /// 
        ///    [To be supplied.] 
        ///  
        public override void SendKnownResponseHeader(int index, String value) {
        } 


        /// 
        ///    [To be supplied.] 
        /// 
        public override void SendUnknownResponseHeader(String name, String value) { 
        } 

 
        /// 
        ///    [To be supplied.]
        /// 
        public override void SendResponseFromMemory(byte[] data, int length) { 
            _output.Write(System.Text.Encoding.Default.GetChars(data, 0, length));
        } 
 

        ///  
        ///    [To be supplied.]
        /// 
        public override void SendResponseFromFile(String filename, long offset, long length) {
        } 

 
        ///  
        ///    [To be supplied.]
        ///  
        public override void SendResponseFromFile(IntPtr handle, long offset, long length) {
        }

 
        /// 
        ///    [To be supplied.] 
        ///  
        public override void FlushResponse(bool finalFlush) {
        } 


        /// 
        ///    [To be supplied.] 
        /// 
        public override void EndOfRequest() { 
        } 

        internal override void UpdateInitialCounters() { 
            PerfCounters.IncrementGlobalCounter(GlobalPerfCounter.REQUESTS_CURRENT);
            PerfCounters.IncrementCounter(AppPerfCounter.REQUESTS_TOTAL);
        }
 
        //
        // Internal support 
        // 
        internal override void UpdateResponseCounters(bool finalFlush, int bytesOut) {
            // Integrated mode uses a fake simple worker request to initialize (Dev10 Bugs 466973) 
            if (HttpRuntime.UseIntegratedPipeline) {
                return;
            }
 
            if (finalFlush) {
                PerfCounters.DecrementGlobalCounter(GlobalPerfCounter.REQUESTS_CURRENT); 
                PerfCounters.DecrementCounter(AppPerfCounter.REQUESTS_EXECUTING); 
            }
            if (bytesOut > 0) { 
                PerfCounters.IncrementCounterEx(AppPerfCounter.REQUEST_BYTES_OUT, bytesOut);
            }
        }
 
        internal override void UpdateRequestCounters(int bytesIn) {
            // Integrated mode uses a fake simple worker request to initialize (Dev10 Bugs 466973) 
            if (HttpRuntime.UseIntegratedPipeline) { 
                return;
            } 

            if (bytesIn > 0) {
                PerfCounters.IncrementCounterEx(AppPerfCounter.REQUEST_BYTES_IN, bytesIn);
            } 
        }
 
        // 
        // Ctors
        // 

        private SimpleWorkerRequest() {
        }
 
        /*
         *  Ctor that gets application data from HttpRuntime, assuming 
         *  HttpRuntime has been set up (app domain specially created, etc.) 
         */
 
        /// 
        ///    [To be supplied.]
        /// 
        public SimpleWorkerRequest(String page, String query, TextWriter output): this() { 
            _queryString = query;
            _output = output; 
            _page = page; 

            ExtractPagePathInfo(); 

            _appPhysPath = Thread.GetDomain().GetData(".appPath").ToString();
            _appVirtPath = Thread.GetDomain().GetData(".appVPath").ToString();
            _installDir  = HttpRuntime.AspInstallDirectoryInternal; 

            _hasRuntimeInfo = true; 
        } 

        /* 
         *  Ctor that gets application data as arguments,assuming HttpRuntime
         *  has not been set up.
         *
         *  This allows for limited functionality to execute handlers. 
         */
 
        ///  
        ///    [To be supplied.]
        ///  
        public SimpleWorkerRequest(String appVirtualDir, String appPhysicalDir, String page, String query, TextWriter output): this() {
            if (Thread.GetDomain().GetData(".appPath") != null) {
                throw new HttpException(SR.GetString(SR.Wrong_SimpleWorkerRequest));
            } 

            _appVirtPath = appVirtualDir; 
            _appPhysPath = appPhysicalDir; 
            _queryString = query;
            _output = output; 
            _page = page;

            ExtractPagePathInfo();
 
            if (!StringUtil.StringEndsWith(_appPhysPath, '\\'))
                _appPhysPath += "\\"; 
 
            _hasRuntimeInfo = false;
        } 

    }
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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