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//------------------------------------------------------------------------------
// <copyright file="VirtualDirectoryMapping.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
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.
//
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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