VirtualDirectoryMapping.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Configuration / VirtualDirectoryMapping.cs / 2 / VirtualDirectoryMapping.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.Configuration { 
    using System; 
    using System.Configuration;
    using System.IO; 
    using System.Web.Util;
    using System.Security.Permissions;

    // 
    // Maps a virtual directory to a physical directory and its config file.
    // 
    [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] 
    public sealed class VirtualDirectoryMapping {
        VirtualPath  _virtualDirectory; 
        string  _physicalDirectory;
        string  _configFileBaseName;
        bool    _isAppRoot;
 
        const string DEFAULT_BASE_NAME = "web.config";
 
        public VirtualDirectoryMapping(string physicalDirectory, bool isAppRoot) 
            : this(null, physicalDirectory, isAppRoot, DEFAULT_BASE_NAME) {
 
        }

        public VirtualDirectoryMapping(string physicalDirectory, bool isAppRoot, string configFileBaseName)
            : this(null, physicalDirectory, isAppRoot, configFileBaseName) { 
        }
 
        private VirtualDirectoryMapping(VirtualPath virtualDirectory, string physicalDirectory, bool isAppRoot, string configFileBaseName) { 
            _virtualDirectory = virtualDirectory;
            _isAppRoot = isAppRoot; 

            PhysicalDirectory = physicalDirectory;
            ConfigFileBaseName = configFileBaseName;
        } 

        internal VirtualDirectoryMapping Clone() { 
            return new VirtualDirectoryMapping(_virtualDirectory, _physicalDirectory, _isAppRoot, _configFileBaseName); 
        }
 
        //
        // Get the virtual directory.
        // Not settable because it is set when it is added to a collection.
        // 
        public string VirtualDirectory {
            get { 
                return (_virtualDirectory != null) ? _virtualDirectory.VirtualPathString : string.Empty; 
            }
        } 

        internal VirtualPath VirtualDirectoryObject {
            get {
                return _virtualDirectory; 
            }
        } 
 
        internal void SetVirtualDirectory(VirtualPath virtualDirectory) {
            _virtualDirectory = virtualDirectory; 
        }

        //
        // The physical directory. 
        //
        public string PhysicalDirectory { 
            get { 
                return _physicalDirectory;
            } 

            set {
                string physicalDirectory = value;
                if (String.IsNullOrEmpty(physicalDirectory)) { 
                    physicalDirectory = null;
                } 
                else { 
                    // remove trailing '\' if any
                    if (UrlPath.PathEndsWithExtraSlash(physicalDirectory)) { 
                        physicalDirectory = physicalDirectory.Substring(0, physicalDirectory.Length - 1);
                    }

                    // Throw if the resulting physical path is not canonical, to prevent potential 
                    // security issues (VSWhidbey 418125)
                    if (FileUtil.IsSuspiciousPhysicalPath(physicalDirectory)) { 
                        throw ExceptionUtil.ParameterInvalid("PhysicalDirectory"); 
                    }
                } 

                _physicalDirectory = physicalDirectory;
            }
        } 

        // 
        // Indicates whether the virtual directory is the location of an application. 
        //
        public bool IsAppRoot { 
            get {
                return _isAppRoot;
            }
 
            set {
                _isAppRoot = value; 
            } 

        } 

        //
        // The base name of the config file.
        // If not specified, "web.config" is used. 
        //
        public string ConfigFileBaseName { 
            get { 
                return _configFileBaseName;
            } 

            set {
                if (string.IsNullOrEmpty(value)) {
                    throw ExceptionUtil.PropertyInvalid("ConfigFileBaseName"); 
                }
 
                _configFileBaseName = value; 
            }
        } 

        internal void Validate() {
            if (_physicalDirectory != null) {
                // 
                // Ensure that the caller has PathDiscovery to the resulting config file,
                // and that the web.config file does not have ".." that could lead to a 
                // different directory. 
                //
                string configFilename = Path.Combine(_physicalDirectory, _configFileBaseName); 
                string fullConfigFilename = Path.GetFullPath(configFilename);
                if (    Path.GetDirectoryName(fullConfigFilename) != _physicalDirectory ||
                        Path.GetFileName(fullConfigFilename) != _configFileBaseName ||
                        FileUtil.IsSuspiciousPhysicalPath(configFilename)) { 

                    throw ExceptionUtil.ParameterInvalid("configFileBaseName"); 
                } 
            }
        } 
    }
}

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