UserMapPath.cs source code in C# .NET

                        Code:
                         / Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / xsp / System / Web / Configuration / UserMapPath.cs / 1 / UserMapPath.cs
                        
                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.Configuration { 
    using System.Configuration; 
    using System.Collections;
    using System.Globalization; 
    using System.Xml;
    using System.Text;
    using System.Web.Util;
    using System.Web.UI; 
    using System.IO;
    using System.Web.Hosting; 
 
    //
    // IConfigMapPath that uses information from a ConfigurationFileMap. 
    //
    class UserMapPath : IConfigMapPath {
        string                  _machineConfigFilename;
        string                  _rootWebConfigFilename; 
        string                  _siteName;
        string                  _siteID; 
        WebConfigurationFileMap _webFileMap; 
        bool                    _pathsAreLocal;
 
        internal UserMapPath(ConfigurationFileMap fileMap)
            : this(fileMap, true) {
        }
 
        internal UserMapPath(ConfigurationFileMap fileMap, bool pathsAreLocal) {
            _pathsAreLocal = pathsAreLocal; 
 
            // Defaults for machine.config and root web.config if not supplied by user
            _machineConfigFilename = HttpConfigurationSystem.MachineConfigurationFilePath; 
            _rootWebConfigFilename = HttpConfigurationSystem.RootWebConfigurationFilePath;

            if (!String.IsNullOrEmpty(fileMap.MachineConfigFilename)) {
                if (_pathsAreLocal) { 
                    _machineConfigFilename = Path.GetFullPath(fileMap.MachineConfigFilename);
                } 
                else { 
                    _machineConfigFilename = fileMap.MachineConfigFilename;
                } 
            }

            _webFileMap = fileMap as WebConfigurationFileMap;
            if (_webFileMap != null) { 

                // Use the site if supplied, otherwise use the default. 
                if (!String.IsNullOrEmpty(_webFileMap.Site)) { 
                    _siteName = _webFileMap.Site;
                    _siteID = _webFileMap.Site; 
                }
                else {
                    _siteName = WebConfigurationHost.DefaultSiteName;
                    _siteID = WebConfigurationHost.DefaultSiteID; 
                }
 
                if (_pathsAreLocal) { 
                    // validate mappings
                    foreach (string virtualDirectory in _webFileMap.VirtualDirectories) { 
                        VirtualDirectoryMapping mapping = _webFileMap.VirtualDirectories[virtualDirectory];
                        mapping.Validate();
                    }
                } 

                // Get the root web.config path 
                VirtualDirectoryMapping rootWebMapping = _webFileMap.VirtualDirectories[null]; 
                if (rootWebMapping != null) {
                    _rootWebConfigFilename = Path.Combine(rootWebMapping.PhysicalDirectory, rootWebMapping.ConfigFileBaseName); 
                    _webFileMap.VirtualDirectories.Remove(null);
                }

            } 
        }
 
        bool IsSiteMatch(string site) { 
            return  String.IsNullOrEmpty(site) ||
                StringUtil.EqualsIgnoreCase(site, _siteName) || 
                StringUtil.EqualsIgnoreCase(site, _siteID);
        }

        // Get the VirtualDirectoryMapping for a path by walking the parent hierarchy 
        // until found. If onlyApps == true, then only return mappings for appliation roots.
        VirtualDirectoryMapping GetPathMapping(VirtualPath path, bool onlyApps) { 
            if (_webFileMap == null) { 
                return null;
            } 

            string matchPath = path.VirtualPathStringNoTrailingSlash;
            for (;;) {
                VirtualDirectoryMapping mapping = _webFileMap.VirtualDirectories[matchPath]; 
                if (mapping != null && (!onlyApps || mapping.IsAppRoot)) {
                    return mapping; 
                } 

                // "/" is the root of the path hierarchy, so it is not found 
                if (matchPath == "/") {
                    return null;
                }
 
                int index = matchPath.LastIndexOf('/');
                if (index == 0) { 
                    matchPath = "/"; 
                }
                else { 
                    matchPath = matchPath.Substring(0, index);
                }
            }
        } 

        // Given a path and a VirtualDirectoryMapping, return the corresponding 
        // physical path. 
        string GetPhysicalPathForPath(string path, VirtualDirectoryMapping mapping) {
            string physicalPath; 

            int l = mapping.VirtualDirectory.Length;
            if (path.Length == l) {
                physicalPath = mapping.PhysicalDirectory; 
            }
            else { 
                string childPart; 
                if (path[l] == '/') {
                    childPart = path.Substring(l+1); 
                }
                else {
                    childPart = path.Substring(l);
                } 

                childPart = childPart.Replace('/', '\\'); 
                physicalPath = Path.Combine(mapping.PhysicalDirectory, childPart); 
            }
 
            // Throw if the resulting physical path is not canonical, to prevent potential
            // security issues (VSWhidbey 418125)
            if (_pathsAreLocal && FileUtil.IsSuspiciousPhysicalPath(physicalPath)) {
                throw new HttpException(SR.GetString(SR.Cannot_map_path, path)); 
            }
 
            return physicalPath; 
        }
 
        public string GetMachineConfigFilename() {
            return _machineConfigFilename;
        }
 
        public string GetRootWebConfigFilename() {
            return _rootWebConfigFilename; 
        } 

        public void GetPathConfigFilename( 
                string siteID, string path, out string directory, out string baseName) {
            GetPathConfigFilename(siteID, VirtualPath.Create(path), out directory, out baseName);
        }
 
        private void GetPathConfigFilename(
                string siteID, VirtualPath path, out string directory, out string baseName) { 
 
            directory = null;
            baseName = null; 

            if (!IsSiteMatch(siteID))
                return;
 
            VirtualDirectoryMapping mapping = GetPathMapping(path, false);
            if (mapping == null) 
                return; 

            directory = GetPhysicalPathForPath(path.VirtualPathString, mapping); 
            if (directory == null)
                return;

            baseName = mapping.ConfigFileBaseName; 
        }
 
        public void GetDefaultSiteNameAndID(out string siteName, out string siteID) { 
            siteName = _siteName;
            siteID = _siteID; 
        }

        public void ResolveSiteArgument(string siteArgument, out string siteName, out string siteID) {
            if (IsSiteMatch(siteArgument)) { 
                siteName = _siteName;
                siteID = _siteID; 
            } 
            else {
                siteName = siteArgument; 
                siteID = null;
            }
        }
 
        public string MapPath(string siteID, string path) {
            return MapPath(siteID, VirtualPath.Create(path)); 
        } 

        private string MapPath(string siteID, VirtualPath path) { 
            string directory, baseName;
            GetPathConfigFilename(siteID, path, out directory, out baseName);
            return directory;
        } 

        public string GetAppPathForPath(string siteID, string path) { 
            VirtualPath resolved = GetAppPathForPath(siteID, VirtualPath.Create(path)); 
            if (resolved == null) {
                return null; 
            }

            return resolved.VirtualPathString;
        } 

        private VirtualPath GetAppPathForPath(string siteID, VirtualPath path) { 
            if (!IsSiteMatch(siteID)) { 
                return null;
            } 

            VirtualDirectoryMapping mapping = GetPathMapping(path, true);
            if (mapping == null) {
                return null; 
            }
 
            return mapping.VirtualDirectoryObject; 
        }
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.Configuration { 
    using System.Configuration; 
    using System.Collections;
    using System.Globalization; 
    using System.Xml;
    using System.Text;
    using System.Web.Util;
    using System.Web.UI; 
    using System.IO;
    using System.Web.Hosting; 
 
    //
    // IConfigMapPath that uses information from a ConfigurationFileMap. 
    //
    class UserMapPath : IConfigMapPath {
        string                  _machineConfigFilename;
        string                  _rootWebConfigFilename; 
        string                  _siteName;
        string                  _siteID; 
        WebConfigurationFileMap _webFileMap; 
        bool                    _pathsAreLocal;
 
        internal UserMapPath(ConfigurationFileMap fileMap)
            : this(fileMap, true) {
        }
 
        internal UserMapPath(ConfigurationFileMap fileMap, bool pathsAreLocal) {
            _pathsAreLocal = pathsAreLocal; 
 
            // Defaults for machine.config and root web.config if not supplied by user
            _machineConfigFilename = HttpConfigurationSystem.MachineConfigurationFilePath; 
            _rootWebConfigFilename = HttpConfigurationSystem.RootWebConfigurationFilePath;

            if (!String.IsNullOrEmpty(fileMap.MachineConfigFilename)) {
                if (_pathsAreLocal) { 
                    _machineConfigFilename = Path.GetFullPath(fileMap.MachineConfigFilename);
                } 
                else { 
                    _machineConfigFilename = fileMap.MachineConfigFilename;
                } 
            }

            _webFileMap = fileMap as WebConfigurationFileMap;
            if (_webFileMap != null) { 

                // Use the site if supplied, otherwise use the default. 
                if (!String.IsNullOrEmpty(_webFileMap.Site)) { 
                    _siteName = _webFileMap.Site;
                    _siteID = _webFileMap.Site; 
                }
                else {
                    _siteName = WebConfigurationHost.DefaultSiteName;
                    _siteID = WebConfigurationHost.DefaultSiteID; 
                }
 
                if (_pathsAreLocal) { 
                    // validate mappings
                    foreach (string virtualDirectory in _webFileMap.VirtualDirectories) { 
                        VirtualDirectoryMapping mapping = _webFileMap.VirtualDirectories[virtualDirectory];
                        mapping.Validate();
                    }
                } 

                // Get the root web.config path 
                VirtualDirectoryMapping rootWebMapping = _webFileMap.VirtualDirectories[null]; 
                if (rootWebMapping != null) {
                    _rootWebConfigFilename = Path.Combine(rootWebMapping.PhysicalDirectory, rootWebMapping.ConfigFileBaseName); 
                    _webFileMap.VirtualDirectories.Remove(null);
                }

            } 
        }
 
        bool IsSiteMatch(string site) { 
            return  String.IsNullOrEmpty(site) ||
                StringUtil.EqualsIgnoreCase(site, _siteName) || 
                StringUtil.EqualsIgnoreCase(site, _siteID);
        }

        // Get the VirtualDirectoryMapping for a path by walking the parent hierarchy 
        // until found. If onlyApps == true, then only return mappings for appliation roots.
        VirtualDirectoryMapping GetPathMapping(VirtualPath path, bool onlyApps) { 
            if (_webFileMap == null) { 
                return null;
            } 

            string matchPath = path.VirtualPathStringNoTrailingSlash;
            for (;;) {
                VirtualDirectoryMapping mapping = _webFileMap.VirtualDirectories[matchPath]; 
                if (mapping != null && (!onlyApps || mapping.IsAppRoot)) {
                    return mapping; 
                } 

                // "/" is the root of the path hierarchy, so it is not found 
                if (matchPath == "/") {
                    return null;
                }
 
                int index = matchPath.LastIndexOf('/');
                if (index == 0) { 
                    matchPath = "/"; 
                }
                else { 
                    matchPath = matchPath.Substring(0, index);
                }
            }
        } 

        // Given a path and a VirtualDirectoryMapping, return the corresponding 
        // physical path. 
        string GetPhysicalPathForPath(string path, VirtualDirectoryMapping mapping) {
            string physicalPath; 

            int l = mapping.VirtualDirectory.Length;
            if (path.Length == l) {
                physicalPath = mapping.PhysicalDirectory; 
            }
            else { 
                string childPart; 
                if (path[l] == '/') {
                    childPart = path.Substring(l+1); 
                }
                else {
                    childPart = path.Substring(l);
                } 

                childPart = childPart.Replace('/', '\\'); 
                physicalPath = Path.Combine(mapping.PhysicalDirectory, childPart); 
            }
 
            // Throw if the resulting physical path is not canonical, to prevent potential
            // security issues (VSWhidbey 418125)
            if (_pathsAreLocal && FileUtil.IsSuspiciousPhysicalPath(physicalPath)) {
                throw new HttpException(SR.GetString(SR.Cannot_map_path, path)); 
            }
 
            return physicalPath; 
        }
 
        public string GetMachineConfigFilename() {
            return _machineConfigFilename;
        }
 
        public string GetRootWebConfigFilename() {
            return _rootWebConfigFilename; 
        } 

        public void GetPathConfigFilename( 
                string siteID, string path, out string directory, out string baseName) {
            GetPathConfigFilename(siteID, VirtualPath.Create(path), out directory, out baseName);
        }
 
        private void GetPathConfigFilename(
                string siteID, VirtualPath path, out string directory, out string baseName) { 
 
            directory = null;
            baseName = null; 

            if (!IsSiteMatch(siteID))
                return;
 
            VirtualDirectoryMapping mapping = GetPathMapping(path, false);
            if (mapping == null) 
                return; 

            directory = GetPhysicalPathForPath(path.VirtualPathString, mapping); 
            if (directory == null)
                return;

            baseName = mapping.ConfigFileBaseName; 
        }
 
        public void GetDefaultSiteNameAndID(out string siteName, out string siteID) { 
            siteName = _siteName;
            siteID = _siteID; 
        }

        public void ResolveSiteArgument(string siteArgument, out string siteName, out string siteID) {
            if (IsSiteMatch(siteArgument)) { 
                siteName = _siteName;
                siteID = _siteID; 
            } 
            else {
                siteName = siteArgument; 
                siteID = null;
            }
        }
 
        public string MapPath(string siteID, string path) {
            return MapPath(siteID, VirtualPath.Create(path)); 
        } 

        private string MapPath(string siteID, VirtualPath path) { 
            string directory, baseName;
            GetPathConfigFilename(siteID, path, out directory, out baseName);
            return directory;
        } 

        public string GetAppPathForPath(string siteID, string path) { 
            VirtualPath resolved = GetAppPathForPath(siteID, VirtualPath.Create(path)); 
            if (resolved == null) {
                return null; 
            }

            return resolved.VirtualPathString;
        } 

        private VirtualPath GetAppPathForPath(string siteID, VirtualPath path) { 
            if (!IsSiteMatch(siteID)) { 
                return null;
            } 

            VirtualDirectoryMapping mapping = GetPathMapping(path, true);
            if (mapping == null) {
                return null; 
            }
 
            return mapping.VirtualDirectoryObject; 
        }
    } 
}

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